CN1095167A

CN1095167A - Method, material and apparatus for holographic replication and direct imprinting

Info

Publication number: CN1095167A
Application number: CN94101345.6A
Authority: CN
Inventors: 约翰内斯·玛蒂森
Original assignee: GERDA MATTHIESEN
Current assignee: GERDA MATTHIESEN
Priority date: 1991-09-30
Filing date: 1994-02-08
Publication date: 1994-11-16
Also published as: CA2155850A1; WO1994018609A1; DE4132476A1

Abstract

Method for simultaneous replication and direct embossing, wherein a negative mold is applied which carries a hologram as the surface relief, while a coating layer is applied to an embossing material having a substantially smooth surface, for which purpose the surface of the embossing material is further flattened. While the hologram is formed in the surface of the coating applied to the imprinting material. The curing of the coating layer is effected by means of a uv-transparent matrix passing through the matrix side and a matrix carrier likewise transparent to uv light. The hardening is essentially carried out before the impression material is removed from the female mold and while still in contact with the female mold and the forming rollers.

Description

The method, material and the device that are used for holographic copy and directly impress

The present invention relates to the clone method of a holography, be used for the moulding of the micromechanism (diffraction grating) of holograph and other optical diffraction or shading, the field that belongs to claim 1 preamble, promptly, the method that is used for duplicating simultaneously and directly impresses, wherein, on an impression materials, particularly on paper or cardboard, scribe microstructure, particularly holograph or other diffraction grating, in forming process, use a kind of former that is loaded with microstructure as the surface three-dimensional structure, wherein, one or more layers dope layer of coating on a kind of impression materials, by this dope layer, the surface of this impression materials becomes smoothly, and this holograph is molded over and covers the coating surface that places on the impression materials.Also relate to one with holograph be engraved on one on the impression materials device and making and impression materials that is applicable to this method of affiliated impression former.

Holographic photography is a kind of record and reproduction technology, and it can reproduce three-dimensional object.Medium for storing and information carrier are the film and the photographic plates of general fashion.

General holograph both can be a master, also can be from considering to be replicated in a certain amount of being replicated on the part economically with optical mode, and for example on photo.

Known, with the structure of a surface three-dimensional hologram image with the moulding of thermoplastic mode be transferred to different impression materials (carrier) again on.

So far, the technology of surface three-dimensional-hologram image being duplicated and being combined in the printed product comprises three production phases:

That is, the image of this holography generally be as the surface three-dimensional shaping structures in a carrier material, then, one deck bonding agent is set or adheres to medium, and in third party's method step, transfer on the impression materials.

Wherein, forming operation is by the impression punch die, endless belt or pressure roller, but be molded over by pressure and temperature in the frosting of thermoplastic distortion.

So far, a kind of like this hologram as if moulding after, be processed to two product variants, that is so-called stamp prints hologram or bonding voluntarily hologram.

In two product variants, all relate to this thick product, they are only in further process or just can be pressed on the impression materials in an additional multiple layer operation process.Also having, also can be directly to be compressed in the impression materials in the thermoplastic mode, and transfer step that need not be follow-up is applied for DE-A3744650 as the disclosed inventor.

Usually, the method for a hologram image of making is as follows:

In the starting stage, that is the so-called system base plate stage, according to original objects, make the hologram image of a Laser emission by laser, as the three-dimensional reproduction spare of object.But this master hologram image only is only observablely under laser, and hologram can be stored in the whole surface information of this object in the interference figure.

According to the Laser emission hologram, that is master, the visible duplicate of white light of a common orientation of usefulness just can be made.Such hologram image is referred to as white light-emission hologram.

Equally, by the holographic mode of laser, or by scribing the diffraction grating of mechanically making other, they can produce has luminous effect ornamental or technology/science.

A kind of in order to obtain at moulding process, plastic surface three-dimensional structure in duplicating or the reproduction process, this master holograph or diffraction grating can be replicated in one with on the flat board of resistance light material coating or in the material of other formation three-dimensional surface structure.

According to the intensity distributions of part when exposing, for example the photosensitive coating of institute's coating will obtain polymerization or obtain decomposing in loseing optical processing in seeing optical processing.By later diffusion, the surface three-dimensional structure consistent with corresponding polymerization or decomposition then reveals.At this with later on the surface structure of impression, light just reflects to form visual mode.

This makes the surface three-dimensional structure of light refraction and resistance light can also the mechanical system manufacturing, that is to say groove or indentation or by laser scored.With the resolution of the refraction grating of machine-building and line-spacing is to depend on the technical matters of selecting for use when producing them.

The difference in height of a micromechanism that surface three-dimensional-hologram image has is from about 0.2 to 1my, and resolution is 800 to 1800 lines/every millimeter.

In order to make the later making ide can be with the moulding of electronics electrochemical plating, conduction be made on the surface of this shading layer, and this point realizes by chemical metallic coating by nickel or silver-colored reducing process.Can also realize with vacuum coating method or pulverised method.

About shading layer, adopt in the similar immersion liquid of the plating nickel sulfamic acid of anode/cathode technology.Like this, from the later a plurality of steps of shading layer, all relate to so-called nickel product separating sheet with as the impression former.So-called herein similar making ide comprises the separating sheet (impression former) of similar immersion liquid product.

From the product former that hologram image is made, mould is thick in 50 to 100my and thicker as requested, and can duplicate in the thermoplasticity imprint process.For special purpose, can make thicker platen and making ide, tape loop or roller platen.

Adopting under certain pressure and temperature, but the surface structure of this impression former is stamped in the surface or dope layer of pyroplastic deformation.Simultaneously, selecting three imprint parameters on the suitable material for use: pressure, temperature and speed will play the decision meaning.

Must very accurately control the heating operation that the female mold surfaces that will impress is carried out.Desirable imprint temperature must be between the plastic point of former and melting point one is determined searching in the zone and is decided.

Before impression, the surperficial first metalized that can impress.Like this, during impressing, just can make stamping structure obtain Optimal Control (quality control) especially.In addition, metalized has also been avoided impressing and has been expected to adhere on the former.

So far, use two kinds of materials and system substantially:

A. cementitious product voluntarily:

It is stamped in film or extrusion film or the thermoplastic coating system, and this system is applied on the matrix (carrier) of dimensionally stable under the heat condition, for example on the polyester film.These coating systems generally be provided with voluntarily bondingly or be glued on the variety carrier.

The typical layers structure of the adhering film voluntarily of common holography or diffraction comprises substantially:

1, polyester matrix (carrier) 50-100my(thickness);

2, increase attached dose of selection (the best);

3, dope layer, but thermoplastic distortion are as the hologram image carrier; 0.9 to 2.5my(thickness) or about 1.2-3.5g/qm; Perhaps select 1+2+3 for use:

But 4, the film of Polyvinylchloride or vinyl film or other thermoplastics distortion; 50～100my and thick slightly; With;

5, about 300 dusts of metal layer are thick, are used for the good optical of a 1.8-2;

6, acrylic acid 4-10g/qm

7, the silicone protection sheet for example 50g/qm be used for label (package fabric); Perhaps 90g/qm for example is used for thorn rust (Stay-Flat-Version).

When duplicating voluntarily bonding hologram image, this hologram image is bonded on the matrix with the carrier film.For this reason, general 50my or thick slightly carrier film and are provided with a kind of bonding voluntarily coating on metallization side after impression, and cover with a kind of silicone-protection sheet, this protection sheet before duplicating with during be removed.

B. hot stamping film:

When hologram resembles in the hot stamping film, for example in this dope layer (it includes the holographic micromechanism that has impressed) production stage afterwards, but, be transferred on the imprinted substrates by the hot stamping bonding agent of hot stamping.

For this reason, the typical layers structure of a common hot stamping film consists essentially of:

1, polyester matrix (carrier), 12 to 25my thickness,

2, separating layer 0.5-2g/qm;

3 or a kind of light or coloured covering enamelled coating 0.5-1.5g/qm;

4, one or more layers gluing bed of material or coloured enamelled coating be as real hologram image carrier, 0.9 to 2.5my thickness; About 1.1-3.25g/qm;

5, about 300 dusts of metal layer (thick) are used for the good optical of 1.8-2;

6, hot stamping bonding agent 0.7-2.5g/qm.

In general, in the impression row metal processing of advancing, but also can carry out subsequently.

The applied coating material of scribing structure, but generally be optical transparency and pyroplastic deformation.Its plastic point and glass transition temperature are the melting points that is higher than the hot stamping bonding agent, its afterwards by coating on metal layer and be thermoplastic.Thus, this hot stamping bonding agent can be on the metal side of the hot stamping film that coating after the impression is impressing.

Hologram image that forms in the dope layer of hot stamping film or diffraction grating now can be by certain squeezing action and temperature conditions and transfer on the impression materials.

By the heat effect that heating platen or pressure roller transmitted, this hot stamping bonding agent and separating layer are just by thermoplastic.

Applying under the basic pressure situation, the dope layer of film just couples together with impression materials.After certain residence time, this mylar finally takes off from the junction of new formation.

When the thermoplasticity method for stamping has relatively fast characteristic, for example 2,500 to 25, the 000(circulation/hour) between, then duplicating in (especially in the hot stamping method) on the product of being decorated additional necessity just becomes the problem of a time on going up and calculating.

A kind of hot stamping speed of hot stamping spreader bar count 800 to 2200(the circulation/hour).And the hot stamping speed of a hot stamping cylinder machine count 1500 to 3500(the circulation/hour).

Beat-type stroke or coding marking press, than can realize under the small dimension to the 6000(circulation/hour) (hologram image duplicates).

Hot stamping speed is to be subjected to impressing product before reaching the adhesiveness of guaranteeing, an essential definite temperature and the restriction of the basic residence time on impression materials.

Not so, with regard to possibility danger of gassing structure owing to the venting of impression materials or bonding agent, this point is responsive especially and disadvantageous in spreader bar.

The remarkable shortcoming of this method is:

Be used for the additional material/cost costliness of hot stamping film itself; The second, after impression, to apply the hot stamping bonding agent; The the 3rd: for the essential additional hot stamping technology of transfer holographic image.

Known method described above in today mechanics of communication, should be considered the certain number of plies or speed of production of being coated with especially, and next very expensive in an essential desirable cost/income ratio.

Task of the present invention is, a method that a kind of impression materials, particularly paper, cardboard and opaque film is directly impressed with hologram image or other micromechanism is provided, and it can realize high printing speed and with low cost.

The other task of the present invention is that a kind of impression materials and structure setting thereof that is suitable for the foregoing invention purpose is provided.

Another task of the present invention is a moulding to be provided and directly hologram image to be copied to a device on the impression materials.

Last task of the present invention is to be provided for making the suitable impression former or the method and apparatus of shaping female mold.

These tasks solve by claim 1, the 8 and 18 invention schemes of being put down in writing.Preferred variation structure record of the present invention in the dependent claims.

That is to say, the present invention proposes to be used for duplicating simultaneously and the direct method that impresses, wherein, on an impression materials, particularly on paper or cardboard, scribe microstructure, particularly holograph or other diffraction grating, in forming process, use a kind of former that is loaded with microstructure as the surface three-dimensional structure, wherein, one or more layers dope layer of coating on a kind of impression materials, by this dope layer, the surface of this impression materials becomes smoothly, and this holograph is molded over and covers the coating surface that places on the impression materials, it is characterized in that:

At least the dope layer that is equipped with microstructure can be ray hardened, particularly can ultraviolet light photopolymerization; To the curing of dope layer from the former side and pass radioparent former and moulding (impression) roller or former carrier and carry out.

The curing of dope layer is to carry out before the former that is in contact with it takes off at impression materials basically.

Using under the rotation mode situation, the ray hardened work of dope layer is finished by passing this format roll wall during the rotation of a moulding (impression) roller at impression materials, wherein, in radiolucent format roll inside a radiographic source is set, it is used for the curing to the dope layer that is loaded with microstructure.

Radiographic source is a ultraviolet light radiographic source or an electronic radial source.

The permeable shaping female mold of this ultraviolet light is to be arranged to single former, tape loop, the structure of roller or roller shell.

Add a kind of parting material in the hardenable shaping medium of ray, it accounts for 0.2 to 2 percentage by weight, in order that make the shaping medium of sclerosis can separate and avoid holographic sun/the moon-fine structure to clamp together.

This separating medium is regulated with chemical mode, that is, the shaping medium that is hardened has a kind of sizable adhesiveness on the impression materials as former.

As the impression materials of microstructure carrier, this impression materials is a kind of transparent or plastic opaque film or plastic paper.

This impression materials is a polyester paper.

This impression materials is by yarn fabric, is made by the thin fabric of plastics of dimensionally stable especially.

This impression materials is a smooth film, and it is used as carrier in moulding and hardening process, so that make a kind of film of loading voluntarily that contains micromechanism; And impression materials is just separated after loading the film sclerosis voluntarily, also can use once more and be wound up respectively in case of necessity.

On a polyester support, but the separating medium of coating one deck heat-activated covers on it and puts the dope layer that one deck can be ray hardened; This layer is during the former that is loaded with micromechanism acts on this layer, and by ray, particularly ultraviolet light or electron ray harden.

Separating layer is to be arranged to the content of wax or siliceous separating layer structure.

After the holographic structure moulding, on dope layer, cover and put the reflexible metal level of one deck.

After the holographic structure moulding and metal level cover put after, coating layer of transparent on the surface of metallized holographic structure (figure), bright or coloured protective coating layer and pressing.

Protective seam or colored paint layer can be ray hardened, but ultraviolet light photopolymerization particularly.

Before the holographic structure moulding, on the first level and smooth dope layer or pouring layer, cover and put the reflexible metal level of one deck; This holographic structure is inserted in one second dope layer.

On an impression materials, be in particular and carve the device of putting holographic structure (figure) on paper or the cardboard.The impression materials of this width of cloth material shape is loaded with drum-shape former that hologram is the surface three-dimensional structure and by leading, the corresponding radiographic source, particularly a ultraviolet light radiographic source of being provided with this former by one; By radiographic source, on impression materials, apply can be ray hardened dope layer just hardening with the former period of contact.

This radiographic source is that preceding (just) side from impression materials makes the dope layer sclerosis.

This radiographic source places the inside of roller platen; Dope layer is by the roller platen that can pass ray and can hardens through the former of ray.

Radiographic source is a ultraviolet light source or an electronic radial source.

The ccontaining member of this roller platen or former is to be made by the quartz glass of ultraviolet light thoroughly basically.

The ccontaining member of this roller platen or former is substantially by plastics, and (Polymethylakrylat PMM) makes by the acrylic plastic glazing of ultraviolet light thoroughly especially.

The light path of ultraviolet source is arranged to the reverberation by optics, shade and/or focalizer and can regulate.

This device comprises one, two or more impression unit of settling successively, and perhaps, these units can dispose successively by the module mode.

Two opposite opposed impression units are to cooperate simultaneously accurately to suppress width of cloth material at front and back.

Can obtain following special advantage by the present invention:

1, essential hologram image adhesive coating behind impression up to now can save;

2, essential copy step can save after adhesive coating, that is to say, the step that the hologram image that has impressed is transferred on the impression materials can be saved.

The inventive method can make paper, and cardboard and other impression materials directly impress, and without intermediate carrier and intermediate steps.

So far necessary material and reprocessing stage can save by the present invention under the hologram image situation of hot stamping hologram image or bonding setting voluntarily.

The present invention can realize adapting to the volume copying that impresses medium to the information or the diffraction grating of hologram image, and cost reduces and obviously improve speed of production.

The inventive method, see through radiation by the roller platen and the former that can see through ultraviolet light that can see through ultraviolet light, make hologram phase and other diffraction grating carry out the hardenable moulding of ultraviolet light, thereby existing relatively thermoplastic method and special with respect to other ray hardened method, technology electron ray hardening process very nervous and expensive hardware for example, technical and advantage economically can be provided on a large amount of qualities.

Especially under the situation that holographic micromechanism and other diffraction grating is used for moulding on impression materials that ultraviolet light as far as possible do not see through such as paper or cardboard or opaque film, plastic paper and the fabric, the inventive method can provide great advantages, because this moment, see through roller and former by the ultraviolet light ray, the medium of moulding is contacted with format roll and hardened.

Up to now, under the impression materials situation that ultraviolet light does not see through, be merely able to by thermoplastic moulding carry out work or by the electron ray that sees through paper from the impression materials side or the carrier thin film side action harden in shaping medium.

According to the invention requirement, this moulding and curing, especially under the spinning solution situation, be by a ultraviolet light radiographic source, by from the former of the Tou Guoed ultraviolet light of former side and equally can be through the ultraviolet light ray realization of the format roll wall of ultraviolet light in seal roller positioned inside.

Moulding of the present invention and sclerosis can also (Step-and-Repeat) realize in the one step method.At this moment, with the rotation antithesis, use a smooth former and a smooth former carrier board, they two can see through ultraviolet light equally.

The moulding of product subsequently is for example also to make of identical mechanical essential structure by the inventive method.

1, paper and cardboard and the impression materials or the plastic paper that in addition may purple light see through, for example so-called PE-paper/polyester paper.

These inexpensive paper patterns preferably continue to be processed into label paper, gift paper and winding paper, cardboard case and packing box, facing paper or the tablecloth.

2, the plastic sheeting that carries certainly, transparent or opaque, thickness is 15 to 150my and thicker.These product forms can partly be arranged to from adhesion type or be processed into cemented type.Simultaneously, firm matrix can also be used fabric.These transparent product forms can also be used for technology, the purpose of science and optics and light and demonstration effect with there not being metal layer to be used as diffusion or diffraction grating.

3, film-multilayer system, place transparent or non-transparent film on, wherein, but the medium of the ultraviolet light photopolymerization of moulding is retained on the carrier thin film (matrix) after sclerosis, simultaneously, the connection effect can also be strengthened by an additional adhesion medium (first-class Primer) that is coated on the matrix.

This

product form

2 and 3 accounts for main, and product form 1 is that part is arranged to bonding way voluntarily, and the film that perhaps is processed to decorate is as paper tinsel or package product, perhaps be punched and be cut into holographic formula or diffraction-type product such as picture, label, illuminated, indicia band and adhesive tape.

4, hot stamping film and other divert films wherein need not adhere to medium in the case between shaping medium and carrier, and cover one deck separating layer (Release Coating) on carrier thin film.This separating layer, for making the hardenable shaping medium of ultraviolet light have a more small time beat, this is with respect to being applied to the hot stamping bonding agent on shaping medium and the metal level after the metallization or being used for for the transmission bonding agent of impression materials, and these bonding agents are very thin shape layers of being used to be loaded with image from carrier is inseparable the connection with being used for this very thin shape layer that is loaded with image with new impression materials separately.

5, Fang Zhi fabric, the high-count fabric of dimensionally stable (for example microfibre, nylon, polyester) is used for the application in safety, fashionable dress and decoration field.In these product forms, the layer of a kind of thick relatively (weight) is set, be the bed of material of rough covering of soft/bullet sclerosis, in order that obtain flexible fabric property and on the other hand on the one hand, guarantee that a smooth surface is to hold the micromechanism of holography.

When selecting for use a radiographic source to be arranged on the inside of roller platen, just must be and all be arranged to its carrier radioparent in case of necessity with this roller platen.

This shaping female mold can be made into roller shell or round-robin band with or be bonded or supersonic welding is in the same place.

In a method for optimizing, a kind of transparent, the permeable shaping female mold of ultraviolet light is by the liquid adhesive of optical transparency or by the transfer bonding agent of optical transparency and be fixed on the radioparent roller platen.

This former should be processed into film or the coiling sheet that thickness is 50my to 250my according to experience.

According to another method for optimizing, this roller shell or band are long, and this forms in an inboard cast that is loaded with the feminine gender-format roll of structure profile earlier.

This moulding can be hardened by infrared ray, and chemistry is hardenable, (bi-component) or preferably finish by the hardenable medium of ultraviolet light.Curing is to realize by the ray from former roller inside simultaneously.

Have in order to ensure the former of making and to meet uniform wall thickness that invention requires and smooth inside surface, these want the medium (it constitutes later on former as external member or band in moulding) of accommodating structure shape is with centrifugation, that is apply by the rotation of female mould forming roller.

The bed thickness of this shaping medium (later former) be about 50 and 250my between or thicker, to adapt to the requirement of further processing.

The specific characteristic of this former or shaping medium is the transmissibility of its ultraviolet light ray.

Want shaped structures, be molded in film or the thin base plate by the surface three-dimensional holographic structure in advance, film or base plate then are fixed on the inboard of feminine gender-moulding-roller.

This feminine gender-moulding-roller can be made up of two or more at least roller fans (part roller), be opened after they can be hardened to typing in the positive external member of formation former (turn back and raise).

But should positive external member can also take out by the inside surface of a vacuum suction apparatus from vacuum furnace.

In order to finalize the design easily and to avoid the jam-packed of micromechanism can also be with 0.2 to 2(percentage by weight) separating medium, for example the hydroxylation polysiloxane appends in the shaping medium, concrete as (TypQ4-3677, belong to USA Dow Coming company or Pura adjuvant 6845 or 6890, belong to the Pura world, German company).

The roller shell of making like this (former) is pinched on the roller platen, and this roller platen will for example cool off in nitrogen by cooling before pushing to external member, temporarily can shrink.After it reaches normal temperature again, can extend again, thereby make external member be locked securely.On the other hand, this roller platen in moulding process owing to partially absorb the ultraviolet light ray and convert heat to, so also can extend so that external member is locked more firmly.At last, this external member can be lived by bonding.

This roller shell (former) can also be made bigger circumference, in order that constitute an endless belt loops.This band is around roller platen and centers on an additional roller leading, by this additional roller, the belt tension of scalable tape loop.

(these systems are: roller platen/external member or tape loop/roller platen/jockey pulley) when determining the excircle of these systems, a basic standard is, select a specification, it is consistent with one times of imprinted pattern length or many times, and is perhaps consistent with one times of the different roller circumferences of rotation reprocessing machinery in processes or many times.These may be for example to rotate marking press or rotation clicker press machine, the combination of laminator or described machinery.

General imprinted pattern length or roller launch girth and are at least the 12-Zoll(long measure) system or 24-Zoll system one times or many times.

But what after this roller shell (former) can also as will be described is molded directly within on the anode roller.In other preferable methods, at first this smooth roller platen is that centering is settled on original negative format roll.

Inwall and the intermediate cavity between the roller platen surface at negative format roll are consistent with the roller shell of manufacturing.

Form a uniform wall thickness in order to ensure shaping medium, this feminine gender format roll and positive format roll are centrally to be placed on the common axis.

Double sleeve wall thickness adds that the summation of the pure diameter of roller platen should be consistent with the nominal diameter of positive moulding roller, and itself and π multiply each other and just obtain the pattern length (expansion) or the imprinted pattern length of wishing.

Ultraviolet light-the sclerosis of this former is preferably used and is finished from the ray of the positive roller inside of ultraviolet light thoroughly; Making in this way under roller shell (former) situation, its principal advantages is, external member can be directly and fully jointlessly covered and put on roller platen, and stays on the roller.

After being pressed into, however this external member by invention requirements manufacturing can remove at an easy rate, and this roller can be re-installed in other external member, because it is to be made by the plastics of minimal thickness basically.

The conduct of Miao Shuing equally, formerly on roller coiling plate (sheet) and fixing former also is removed easily.After this, roller platen can install other former again.

For realize on the roller impression materials around between this roller run duration and shaping period thus stably leading by its track; Can in the pressure roller system, settle an additional flexibility (circulation) band where necessary.

The belt tension of this band can for example be regulated by a jockey pulley, and this jockey pulley is placed on the axle of endplay device.

The radiation of the ultraviolet source of settling in format roll can be by changing with shade circular and that centering is settled overlappingly.Equally, this ultraviolet rays can carry out the wheelbase adjusting according to focus strength by the hollow mirror of settling equally of scalable in format roll.

Elaborate the present invention by embodiment below.

Fig. 1 is the cross-sectional perspective view of hot sealing layer structure in the prior art.

Fig. 2 is the impression materials layer structural section figure that the present invention makes.

Fig. 3 is a superficial layer cross section zoomed-in view.

Fig. 4 is an imprinting apparatus sketch.

Fig. 5 is a preferred imprinting apparatus sketch with endless belt loops.

Fig. 6 is an imprinting apparatus with a plurality of impression units that connect successively.

Fig. 7 is a process diagram of making an impression cylinder.

Fig. 1 is a kind of embossed film structure that expression is made according to prior art alleged " hot stamping technology ".A kind of like this film is made in this way: be about on 12 to 25my the polyester 1 at a thickness, cover a thin content of wax or siliceous separate layer 2, on it, cover and put one 0.9 to 2.5my(or 1.1-3.25g/qm) dope layer 3, again one deck 0.05 to 0.2 again, the metallic reflector 4 that my is thick, for example aluminium.300 dusts can produce the optical density (OD) of a good 1.8-2.

This holograph is as the impression holograph, be stamped in the dope layer 3 by metallization (layer) 4, and this impression holograph general fashion is to place by the imprinted substrates of nickel making as spatial structure.

Then, but cover bonding agent 5(heat-molten-stick of putting one deck 0.7g/qm heat activation), by it, the dope layer of carrying information is transferred on the impression materials, and fixing there.

Put in order to cover " hot stamping hologram ", for example 110 ℃ to 130 ℃ of heating, for example pressurize under the 50-150kp/cm, also use a kind of impression materials, for example, paper, or cardboard places closely contact with top such film of making, and like this, this heat-molten-bonding agent 5 just fusing and separating layer 2 just is activated, therefore, this coating/metal layer 3/4 produces lasting being connected with matrix.

At last, the mylar 1 on separating layer 2 is separated, and therefore, has only retained dope layer 3 on impression materials, metal level 4 and heat-molten-bonding agent 5.

Should be noted that in this method modification, the impression of hologram is to realize from the side of metal level 4, thus, can have the impression flat board in horizontal structure.So in the observation afterwards, this hologram just can be by transparent dope layer 3 from laterally seeing clearly.

Fig. 2 shows a hologram structure on carrier 6, and this hologram covers according to the DEA3744650 method to be put.This carrier 6 is paper or cardboard.But it can also be transparent or plastic opaque or other carrier.

Cover in order to realize the hologram of putting can appear completely and for this reason can have good modulation and the refraction efficient, wish that then carrier has a very high surface smoothness.

If not this situation, then cause when impression and moulding, the distribution that impresses and do not have imprinting area that has of fragrant citrus pericarp sample occurs, and cause tarnish, unintelligible and irreflexive surface and bad overall brightness.

Up to the present, the unevenness of the density of impression materials and thickness is by flexibility pressure roller to be equilibrated to a basic degree.In the case, this can have for example silicon rubber or similarly coating to pressure roller or moulding (roller).These coatings rule of thumb should have 60 to 90 Shore hardness.

Existing what is called on market " artificial imprinted paper and cardboard " for example goes for the carrier of the object of the invention.Because they are at the following tool of surface line one precompressed " core " and have a favorable surface quality, this is because adopt machinery to smear or pour into a mould the result of the coating of smearing.

As the moulding dope layer 7 of coating after being used for and may the time coating get the matrix of the smooth bed of material of rough covering, this impression materials 6 should preferably have surface 10 that a machinery is smeared or that cast is smeared, in order that fill and lead up pore and make surface quality such as light knot degree and roughness optimization.

It is in coarse stuff moulding effect realization by a polishing roll or a smooth endless belt loops or a smooth epiphragma between hardening period that this needed where necessary surface just flattens, and epiphragma is removed after sclerosis again.

On carrier smooth or thick and stiffization 6 surfaces or on the superficial layer 10, the thickness of the moulding dope layer 7 best coatings 1.5 to 2my of this photic sclerosis.And the superficial layer 10 that may coating on carrier 6 and the bed of material of rough covering of coating in case of necessity can avoid dope layer to bump and make desirable flat surfaces of carrier formation from carrier 6 effectively.

Because the structure that will impress has suitable fineness: depth of indentation is 200 to 1,000nm, and resolution is 800 to 1,800 lines/every mm, so absolute demand is that the thickness of using up scleratogenous moulding dope layer goes to compensate the surface irregularity that each retains.According to the application of the surface structure or the bed of material of rough covering of impression materials, the thickness of impression dope layer can be from 2g/qm to and 10g/qm or to 20g/qm.Simultaneously, according to the invention requirement, dope layer is applied to 1.5 to 10my thickness according to character of surface.

For making the bed of material of rough covering that a surface as level be arranged, be preferably on the roller that places a polishing in sclerosis or the dry run and realize.

The cardinal rule of forming method of the present invention is to make coating (layer) and fine structure moulding and sclerosis by contacting with matrix, band, roller shell or roller.Simultaneously, preferably use the coating of photic sclerosis.

And, can by ultraviolet ray or electron ray cause and realize the sclerosis or polymerization.

At last, cover metal level 8 aluminium for example of putting one 20 to 200nm thickness on the dope layer of shape being loaded with, it is used for the observation light that reflection holography is taken a picture.And have a good optical density (OD) and reflecting effect during for 300 dusts for example at thickness.

This metal layer is preferably in to cover after the holograph shaping structures again and puts.

Use on the impression materials for the coarse stuff that flattens or on the impression materials be under the smooth surface condition of level for example under the plastic sheeting situation, the coating of this metal level is on the bed of material of rough covering.

This stamp work is to carry out under nontransparent that is the impression materials situation that can not have an X-rayed, so making ide must be prepared laterally to move back and forth.

In order to protect later holograph surface, can then on metal layer 8, cover and put a protective finish 9 or another kind of transparent, also may be coloured, protective seam.

Obtain a holograph carrier by the inventive method, it is to make in the method step of straight forming.

This and prior art antithesis, in the prior art, stamp work must be carried out in an additional carrier that shifts.And the inventive method can directly be carried out a moulding in impression materials.According to this, just obtaining a tangible cost reduction and moulding process quickens significantly.

In the preferred embodiment of the invention, this dope layer 7 is made of one or both different layered materials, simultaneously at first on the impression materials or the dope layer of coating on smear layer 10 character of surface of a level light should be provided.Carrying information on single or second dope layer at this.

This metal level 8 preferably is evaporated on the dope layer, but it also can use other modes, for example carries out coating by an indirect metal spraying transfer method, so long as the holograph structure is transferred over after metal spraying.

Except realizing the light reflection, the advantage that previous metal level 8 has is in forming process, to realize optical quality control immediately of imprint result according to eye observation or measurement diffraction efficiency or reflection case.

In an existing device, just can realize that with the inventive method 5,000 to 25,000 impress/per hour and more frequently impress.

Fig. 3 shows an interlayer zoomed-in view that has been loaded with holographic structure.The zone 8 of this hatching is corresponding with the moulding degree of depth of the spatial structure of holograph.As can be seen, the deep-seated of moulding is put and is terminated in dope layer 7 inside.The thickness that this dope layer 7 should be selected is that the spatial structure of this moulding can not enter into carrier.

In addition, this dope layer 7 also can so be selected thickness, can realize a compensating action to carrier 6 or surface coating 10 top layer unevenness.

Except holograph, can also impress other optically diffractive structure and so-called diffraction grating or diffraction grating, they for example are mechanical systems or form by laser embossment groove or indentation.

Under sufficiently high surface quality (it is determined by the layer structure of impression materials basically) situation, method according to foregoing description just can realize direct volume copying under the cost that obviously reduces, this is with respect to previously described three one step process: the moulding on impression materials, adhesive linkage and impression or according to directly but electron ray method for curing that hardware strengthens is arranged.

Fig. 4 shows a device sketch that is used to duplicate and scribes holograph simultaneously on impression materials.

On roller 11, be equipped with a impression materials with uniform outer surface quality, it is moved 16,17 by roller.This impression materials passes through another roller again to 22,23, and by pressure roll 14 operations.Simultaneously, pressure roll 14 is by around about 180 ° or few.Then, to 30,31, another roller is to 24,25 and be delivered on the take up roll 13 between two

rollers

18,19 by roller for this impression materials.

As long as use a kind of carrier material, this material just can be used as width of cloth material 37 with the impression materials leading by imprinting apparatus, again by roller to 26,27 with between two

rollers

20,21, pass and be wound up on the roller 12.

In order to improve the squeezing action of impression materials on pressure roll, can stipulate, with a band 15 with the surface of impression materials by pressure roll 14.This band is around

roller

23,30,29 and 28 operations, and when needed can also be at an idler roller 36 following leadings, and roller 36 is used for the accommodation zone ring strain.

By the coating mechanism 34 of a band applicator roll 35, a kind of dope layer can be covered and put pressure roll, or select to be coated onto on the width of cloth material, and this width of cloth material is walked between roller 23 and pressure roll and impression materials when pressure roll turns round by roller 23.

This pressure roll 14 can be made quartzy roller or acrylic plastic glazing roller (PMMA), and deployment has a radiation source 33, especially a ultraviolet source within it.For the optical radiation of orientation, a parabolical hollow mirror 39 and shading piece 38 are set, they are adjustable structures and the reach of ultraviolet light are adjusted on the impression materials by the pressure roll leading.

Have under the tape or slot situation of width in ray focusing to, impression materials just can correspondingly reduce around the angle of contact of pressure roll.

This pressure roll inner chamber is provided with an air-breather, and it imports cooling air on the one hand, and is used on the other hand ozone is drained.

In order to realize a higher efficient, can be with a water-cooled flame tube job.

Because, can be ray hardened by the coating of applicator roll 35 coatings, so, it will harden so far forth during impression materials goes in ring through pressure roll, that is, it can be arrived another roller by delivery immediately, and can be wound up on take up

roll

13 or 12, also not influential simultaneously to surface structure.

Replace a ultraviolet source, can also use an electronic radial source that has the paint structure that adapts.But method is common, promptly apply a quite thin coating liquid layer structure on impression materials, and this layer structure can hardened under the pressure not having substantially between shaping period on the former.This point is so to realize when using ultraviolet source, that is, and and according to invention required pressure roller with meet former itself that invention requires all to be arranged to ultraviolet light permeable, in order that can realize causing a hardening process from pressure roll inside.

Fig. 5 shows the preferred embodiment of Fig. 4, wherein, replaces pressure roll and adopts an endless belt loops that is loaded with the shape profile.

This endless belt loops 40 can ccontaining continuously a plurality of microstructure or is impressed visual length, and this band 40 can pass through pressure roll 14 and slewing rollers 41 leadings.This device can allow the former in the impression unit is changed rapidly.In addition, just can easily adapt to different impression image length by this modification.And needn't change pressure roll.

Applicator roll directly is coated to coating on the tape loop 40 for 35 this moments.In addition, the device of Fig. 5 is consistent with Fig. 4 device.

Fig. 6 shows a device that is made of a plurality of impression units.This single impression unit is consistent with the device of Figure 4 and 5 basically.In addition, in the first impression unit, coating one deck coarse fodder layer on impression materials is so that the surface of this impression materials is enough smooth.Equally, the coarse fodder layer of coating can be ray hardened by ultraviolet light.

On main impression unit 46, carry out the real coining manipulation that the microstructure profile is placed on the impression materials.As needs, just can connect second impression unit 47, it is to settle with the opposite orientation of main impression unit.Therefore, can provide a impression to the impression materials back side.

For the stress that can make impression materials keeps constant and the longitudinal register sign indicating number of regulating on the width of cloth material, be provided with dancer roll 42,45.Corresponding each impression unit all respectively is provided with one and applies

mechanism

34,48 and 49.

Fig. 7 represents to make the process sketch of a pressure roll.

Be equipped with glass basis 54 bottom, it has exposure and shading layer 53 that launch, and this layer 53 contains the surface structure hologram.On the shading layer 53 that contains the holograph structure, be equipped with shaping medium 52 with ultraviolet light photopolymerization.

This point by spray realize (the nozzle coating unit, that is a series of have limits nozzle diameter well-balanced nozzle with rectilinear motion through dull and stereotyped), also can be by soaking spiral fashion coating, or cast and centrifugation.

This bed thickness should be at least 2my and thick slightly.

On shaping medium, one deck is set and sees through the acrylate film of ultraviolet light or acrylic acid flat board (PMMA) as later shaping medium carrier 51 with the tight way of contact.

This flat board or film must be flexible, in order that can easily separate and make other installation step and to reprint step comparatively convenient after sclerosis.

On acrylate film 51, a quartz glass plate 50 of ultraviolet light equally thoroughly is set, so that guarantee an absolute planimetric position and guarantee that this acrylate film 51 closely contacts with shaping medium 52 realizations by uniform pressure.

This moulding or reproduction process are preferably in the vacuum copying surroundings to be carried out, and desirable contact is arranged and avoid air influence to guarantee duplicating layer.

By UV-irradiation and after finishing reproduction process, then acrylate film is thrown off from shading layer.And, for the purpose (Ganging Up) of repeatedly duplicating repeat replication again, perhaps be assembled on the female mould forming roller.

This layer structure of forming by acrylic acid and shaping medium (sandwich), the present inside that just is positioned in a ccontaining member 55 of former, this member 55 is preferably formed by the interconnective fan module of joint 56-58 by four.After ccontaining member 55 closures of former, this shaping medium just is positioned at hollow roll inside as " lining coating ".Arrive this, a quartz glass roller 54 just is placed in the ccontaining member 55 of former with one heart.Corresponding processing step is seen Fig. 7.

Fig. 7 e shows the device of making pressure roll.In the intermediate cavity between glass roller 54 and the shading layer 53, from cylinder 59, import a kind of moulding coating of regulation by pipeline 60.With intermediate cavity gas injection and exhaust is that the vacuum plant 61 that passes through to be connected carries out.And the sclerosis of moulding coating is finished by ultraviolet light, for this reason, a corresponding light source is set in the inside of glass roller 54.

After the sclerosis of moulding coating, this former member just can be opened, and pressure roll 62 just can take out, and this roller just is loaded with the micromechanism that produces by shading layer 53 in its surface.

After pressure roll 62 being applied to an impression unit, just can carrying out real impression materials and impress.

Dash number

1 polyester support

2 separating layers

3 dope layers

4 metal levels

5 heat-molten-bonding agent

6 carriers, the impression material

7 dope layers

8 metal levels

9 protective coatings

10 cast smear layers

11 rollers

12 rollers

13 take up rolls

14 roller platens (pressure roll)

15 bands

16,17 rollers are right

18,19 rollers are right

20,21 rollers are right

22,23 rollers are right

24,25 rollers are right

26,27 rollers are right

28,29 rollers are right

30,31 rollers are right

32 rollers

33 radiographic sources

34 apply mechanism

35 applicator rolls

36 idler rollers

37 width of cloth material

38 shades

39 hollow mirrors

40 endless belt loops

41 rollers

42,45 dancer rolls

46 main impression units

47 back-pressures seal unit

48 apply mechanism

49 apply mechanism

50 quartz glass plates

51 acrylic sheet

The shaping medium of 52 ultraviolet light photopolymerizations

53 shading layers

54 glass basiss

55 glass rollers

The ccontaining member of 56 formers

57,59 joints

60 cylinders

61 pipelines

62 pressure rolls

Claims

1, is used for duplicating simultaneously and the direct method of impression, wherein, on an impression materials (6), particularly on paper or cardboard, scribe microstructure, particularly holograph or other diffraction grating, in forming process, use a kind of former that is loaded with microstructure as the surface three-dimensional structure, wherein, go up one or more layers dope layer (3,7,9) of coating at a kind of impression materials (6), by this dope layer, it is level and smooth that the surface of this impression materials becomes, this holograph is molded over and covers the coating surface that places on the impression materials (6), it is characterized in that:

At least the dope layer (3) that is equipped with microstructure can be ray hardened, particularly can ultraviolet light photopolymerization; To the curing of dope layer (3) from the former side and pass radioparent former and moulding (impression) roller or former carrier (14) and carry out.

2, by the described method of claim 1, it is characterized in that:

The curing of dope layer (3) is to carry out before the former that is in contact with it takes off at impression materials (6) basically.

3, by the described method of claim 1, it is characterized in that:

Using under the rotation mode situation, the ray hardened work of dope layer (3) is finished by passing this format roll wall during the rotation of a moulding (impression) roller at impression materials (6), wherein, in radiolucent format roll inside a radiographic source (33) is set, it is used for the curing to the dope layer that is loaded with microstructure (3).

4, by the described method of claim 1, it is characterized in that:

Radiographic source (33) is a ultraviolet light radiographic source or an electronic radial source.

5, by the described method of claim 1, it is characterized in that:

6, by the described method of claim 1, it is characterized in that:

7, by the described method of claim 6, it is characterized in that:

8, be used as the impression materials of microstructure carrier in claim 1 method, it is characterized in that, this impression materials (6) is a kind of transparent or plastic opaque film or plastic paper.

9, according to claim 8 impression materials as described in the preamble, it is characterized in that:

This impression materials (6) is a polyester paper.

10, by claim 8 impression materials as described in the preamble, it is characterized in that: this impression materials (6) is by yarn fabric, is made by the thin fabric of plastics of dimensionally stable especially.

11, by claim 8 impression materials as described in the preamble, it is characterized in that: this impression materials (6) is a smooth film, and it is used as carrier in moulding and hardening process, so that make a kind of film of loading voluntarily that contains micromechanism; And impression materials (6) is just separated after loading the film sclerosis voluntarily, also can use once more and be wound up respectively in case of necessity.

12, by the described impression materials of claim 11, it is characterized in that:

13, by the described impression materials of claim 12, it is characterized in that:

Separating layer (2) is to be arranged to the content of wax or siliceous separating layer structure.

14, by one of claim 8-13 described impression materials, it is characterized in that:

After the holographic structure moulding, on dope layer (3), cover and put the reflexible metal level of one deck (4).

15, by the described impression materials of claim 14, it is characterized in that:

After the holographic structure moulding and metal level cover put after, coating layer of transparent on the surface of metallized holographic structure (figure), bright or coloured protective coating layer (9) and pressing.

16, by described impression materials of claim 15 or method, it is characterized in that:

Protective seam or colored paint layer (9) can be ray hardened, but ultraviolet light photopolymerization particularly.

17, by one or more described impression materials of claim 8-13, it is characterized in that:

Before the holographic structure moulding, on the first level and smooth dope layer (3) or pouring layer, cover and put the reflexible metal level of one deck (4); This holographic structure is inserted in one second dope layer (7).

18, implement the method for claim 1, on an impression materials (6), be in particular and carve the device of putting holographic structure (figure) on paper or the cardboard, it is characterized in that:

The impression materials (6) of this width of cloth material shape is loaded with drum-shape former that hologram is the surface three-dimensional structure and by leading, the corresponding radiographic source, particularly a ultraviolet light radiographic source of being provided with this former by one; By radiographic source, impression materials (6) go up coating can be ray hardened dope layer (3) just hardening with the former period of contact.

19, by the described device of claim 18, it is characterized in that:

This radiographic source is that preceding (just) side from impression materials makes dope layer (3) sclerosis.

20, by the described device of claim 19, it is characterized in that:

This radiographic source (33) places the inside of roller platen; Dope layer (3) is by the roller platen that can pass ray and can hardens through the former of ray.

21, by the described device of claim 18, it is characterized in that:

Radiographic source (33) is a ultraviolet light source or an electronic radial source.

22, by the described device of claim 20, it is characterized in that:

23, by the described device of claim 20, it is characterized in that:

The ccontaining member of this roller platen or former is basically by plastics, and (Polymethylakrylat PMM) makes by the acrylic plastic glazing of ultraviolet light thoroughly especially.

24, by the described device of claim 20, it is characterized in that:

The light path of ultraviolet source is arranged to the reverberation by optics, shade (38) and/or focalizer and can regulate.

25, by the described device of claim 18, it is characterized in that:

This device comprises one, two or more impression unit of settling successively (46,47), and perhaps, these units can dispose successively by the module mode.

26, by the described device of claim 18, it is characterized in that:

Two opposite opposed impression units (46,47) are to cooperate simultaneously accurately to suppress width of cloth material at front and back.