CA1118574A - Liquid-permeable film from thermoplastic material - Google Patents
Liquid-permeable film from thermoplastic materialInfo
- Publication number
- CA1118574A CA1118574A CA000321485A CA321485A CA1118574A CA 1118574 A CA1118574 A CA 1118574A CA 000321485 A CA000321485 A CA 000321485A CA 321485 A CA321485 A CA 321485A CA 1118574 A CA1118574 A CA 1118574A
- Authority
- CA
- Canada
- Prior art keywords
- embossments
- film
- openings
- cross
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012815 thermoplastic material Substances 0.000 title claims abstract description 6
- 239000011324 bead Substances 0.000 claims description 10
- 230000002745 absorbent Effects 0.000 abstract description 4
- 239000002250 absorbent Substances 0.000 abstract description 4
- 239000000543 intermediate Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/005—Producing membranes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/755—Membranes, diaphragms
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Biomedical Technology (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Forests & Forestry (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Z 257 (R) Abstract of the Invention A moisture-permeable film from thermoplastic material as covering layer for absorbent layers of an article has embossments with openings arranged at their ends.
The embossments are formed in such a way that their side walls extend at approximately right angles to the base surface. As a result the embossments form capillaries with a cross-section which does not change over the entire depth of the embossments. The embossments and the openings can have any shape. Preferred are slit-shaped embossments having dimensions of 0.3 by 2 mm, which have been arranged in rows, staggered and in alternating direction.
The embossments are formed in such a way that their side walls extend at approximately right angles to the base surface. As a result the embossments form capillaries with a cross-section which does not change over the entire depth of the embossments. The embossments and the openings can have any shape. Preferred are slit-shaped embossments having dimensions of 0.3 by 2 mm, which have been arranged in rows, staggered and in alternating direction.
Description
- 1 - Z 257 (R) LIQUID-PERMEABLE FILM FROM THERMOPLASTIC MATERIAL
The invention relates to a liquid-permeable film from thermoplastic material~ which is particularly provided for use as covering layer for articles having liquid-absorbing inner layers, such as e.g. bandages and napkins.
The permeability of the film for liquids when the film is used as covering layer for an absorbent material should essentially only be present in the direction of this material.
A liquid-permeable film has already been described in United States patent 3,929,135 dated December 30, 1975 in the name H.A. Thompson as an inner layer of a disposable napkin, The film proposed here has tapered capillaries which have a conical shape and an apex, the apex containing an opening.
It is an object of the present invention to provide a per-forated film of the above-mentioned type, which not only has a good capillary action but is also more simple to manufacture, and for which primarily a uniform size of the openings is better guaranteed.
In the films according to the invention the walls of the embossments are so shaped as to be at right angles to the base surface of the film and the inside cross-section of these embossments is equal over their depth and corresponds with the cross-section of the openings at the end of the embossments. The embossments and openings can have any given shape and they may e.g. be circular, rectangular, polygonal or star-shaped. The minimum dimension of the inside cross-section depends on the demands made on the film. Minimum dimensions up to 0.1 '
The invention relates to a liquid-permeable film from thermoplastic material~ which is particularly provided for use as covering layer for articles having liquid-absorbing inner layers, such as e.g. bandages and napkins.
The permeability of the film for liquids when the film is used as covering layer for an absorbent material should essentially only be present in the direction of this material.
A liquid-permeable film has already been described in United States patent 3,929,135 dated December 30, 1975 in the name H.A. Thompson as an inner layer of a disposable napkin, The film proposed here has tapered capillaries which have a conical shape and an apex, the apex containing an opening.
It is an object of the present invention to provide a per-forated film of the above-mentioned type, which not only has a good capillary action but is also more simple to manufacture, and for which primarily a uniform size of the openings is better guaranteed.
In the films according to the invention the walls of the embossments are so shaped as to be at right angles to the base surface of the film and the inside cross-section of these embossments is equal over their depth and corresponds with the cross-section of the openings at the end of the embossments. The embossments and openings can have any given shape and they may e.g. be circular, rectangular, polygonal or star-shaped. The minimum dimension of the inside cross-section depends on the demands made on the film. Minimum dimensions up to 0.1 '
- 2 - ~ 257 (R) m~ are possible. In the case of polygonal or star-shaped cross-sections of the embossments this minirnum measurement of the dia-meter is an inner circleimagineable in the embossments. The depth of the embossments is at least 0.3 mm and can also be 0.5 mm and even up to about 1 mnl. It is likewise dependent on the ~emands made on the film. In a preferred embodiment the cross-section of the embossments is slit-shaped and has dimensions of 0.2 by 6.0 mm, preferably 0.3 by 2.0 mm. These slit-shaped embossments are preferably arranged in the film in rows staggered with respect to each other and from row to row they have an alternating direction with respect to the axis and/or the machine direction of the film.
Preferably they are inclined over 45 with respect to the axis.
In a further embodiment of this film the edge of the openings at the ends of the embodiments is reinforced. This reinforcement is effected by a bead. Advantageously, the bead lies on the outside of the side walls of the embossments, so that the cross-section here is not reduced.
Some embodiments of the embossments and openings in the film according to the invention are illustrated in the drawings:
Fig. 1 and 2 are sections through two different embossmentsi Fig. 3 to 5 show various arrangements of embossments and openings in the film.
The embossmer,ts are made in such a way that the inner surfaces of the side walls 2 of the embossments are formed at an approx-imately right angle to the basic surface 1 of the film.
Deviations from the right angle of up to 5, as they may be useful for the preparation and take-off of the film on an engraved cylinder, are regarded as insignificant, similarly as small rounding radii between the film 1 and the side walls 2.
The side walls 2 of the embossments have at their open ends a head 3, which preferably only lies on the outside and does not confirle the cross-se(tiorl of the capillaries 4 (Fig. 1). If the
Preferably they are inclined over 45 with respect to the axis.
In a further embodiment of this film the edge of the openings at the ends of the embodiments is reinforced. This reinforcement is effected by a bead. Advantageously, the bead lies on the outside of the side walls of the embossments, so that the cross-section here is not reduced.
Some embodiments of the embossments and openings in the film according to the invention are illustrated in the drawings:
Fig. 1 and 2 are sections through two different embossmentsi Fig. 3 to 5 show various arrangements of embossments and openings in the film.
The embossmer,ts are made in such a way that the inner surfaces of the side walls 2 of the embossments are formed at an approx-imately right angle to the basic surface 1 of the film.
Deviations from the right angle of up to 5, as they may be useful for the preparation and take-off of the film on an engraved cylinder, are regarded as insignificant, similarly as small rounding radii between the film 1 and the side walls 2.
The side walls 2 of the embossments have at their open ends a head 3, which preferably only lies on the outside and does not confirle the cross-se(tiorl of the capillaries 4 (Fig. 1). If the
3~ mininlurrl dimensiorl o-f the inside cross-section is sufficiently large, the beads can, however, project a little into the , :
' ~1~8St74 - 3 - Z 257 (R) capillaries, as shown in Fig. 2.
Fig. 3 shows a part of a film 11 with triangular embossments and openings 12, and Fig. 4 shows another film 13 with circular embossments and openings 14.
The size, shape and depth of the embossments and the openings can in any given case be adapted to the requirements. It is advan-tageous however to leave a sufficiently wide, flat base surfacebetween the individual embossments, so that the film still possesses an adequate firmness and is not deformed by the web tension on winding and further processing.
Fig. 5 shows a preferred embodiment~of the film according to the invention, in which the embossments and openings have the shape of rectangular slits. The embossments and openings 16 in the film 15 are arranged in rows, staggered with respect to each other, and in these rows alternately inclined, preferably at about 4~ to opposite sides, with respect to the axis.
In this preferred embodiment the embossments and the slit-shaped openings 16 at the ends of the embossments have an inside cross-section of 0.3 by 2.0 mm. The distance between the end of a slit and an adjacent slit in this embodiment is about 1.7 to 1.8 mm. The flat surfaces in the film 15 remaining between the slits could be embossed with a very fine pearl struc-ture. When using this film in a thickness of about 0.025 mm as covering film for an absorbent intermediate layer, such as the one used in disposable napkins, it appeared that the film was pleasant to the skin, that it could rapidly draw liquid from the skin and that also in tne case of a more thoroughly wetted interlllediate layer and pressure on the film, there was no flowing back of the 1i4uid. At normal pressure on the combi-3h nation no appreciable deformation of the slit-shaped embossments and openings occurred. Only if a larger pressure was applied - 11185~4
' ~1~8St74 - 3 - Z 257 (R) capillaries, as shown in Fig. 2.
Fig. 3 shows a part of a film 11 with triangular embossments and openings 12, and Fig. 4 shows another film 13 with circular embossments and openings 14.
The size, shape and depth of the embossments and the openings can in any given case be adapted to the requirements. It is advan-tageous however to leave a sufficiently wide, flat base surfacebetween the individual embossments, so that the film still possesses an adequate firmness and is not deformed by the web tension on winding and further processing.
Fig. 5 shows a preferred embodiment~of the film according to the invention, in which the embossments and openings have the shape of rectangular slits. The embossments and openings 16 in the film 15 are arranged in rows, staggered with respect to each other, and in these rows alternately inclined, preferably at about 4~ to opposite sides, with respect to the axis.
In this preferred embodiment the embossments and the slit-shaped openings 16 at the ends of the embossments have an inside cross-section of 0.3 by 2.0 mm. The distance between the end of a slit and an adjacent slit in this embodiment is about 1.7 to 1.8 mm. The flat surfaces in the film 15 remaining between the slits could be embossed with a very fine pearl struc-ture. When using this film in a thickness of about 0.025 mm as covering film for an absorbent intermediate layer, such as the one used in disposable napkins, it appeared that the film was pleasant to the skin, that it could rapidly draw liquid from the skin and that also in tne case of a more thoroughly wetted interlllediate layer and pressure on the film, there was no flowing back of the 1i4uid. At normal pressure on the combi-3h nation no appreciable deformation of the slit-shaped embossments and openings occurred. Only if a larger pressure was applied - 11185~4
4 _ Z 257 (R) and a deflection of the film took place, did the dimensions in the centre of the slits change, whereas at their ends capillaries were retained which had about the sarne cross-section over their length. In more thoroughly wetted intermediate layers this decrease s in cross-section, which acts approximately as a "lip valve", was evidently favourable in order to prevent the liquid from flowing back.
As the cross-sections of the embossments are equal over their entire depth, all openings in a film have the same inside cross-section, also if owing to mechanical or thermical influences during manufacturing the depth of the embossments in the finished film should be different. The constant cross-section of the em-bossments, moreover, results in an optimum capillary action. By compressing the article which is prbvided with an absorbent inter-mediate layer and is covered by the film according to the invention on the side from which the liquid is to penetrate, opposite walls of the embossments can be compressed, thus causing a change in the free cross-section. However, no complete shutting can occur and -~
also as a result of the beads there will still be left free passages at least at the ends or corners of the embossments.
A substantial closure of the openings by pressure on the material will become possible if the depth of the embossments is larger than the minimum dimension of their cross-section. In the case of an approximately rectangular shape and a corresponding slit the value chosen for the depth of the embossment will be larger than that of its width. For certain films however, e.g. for a "breathing" film, it may also be desirable that the slit, and the opening, are not shut by the compression to so large an extent, in order ~ still retain a sufficient passage of vapours, if a reductiorl occurs in the passage of liquid possible. Slit and em-bosslllerlt will then be so shaped as to ensure that the depth of the embosslllent is e.g. smaller than its minimum dimension.
3'j If beads 3 are made, e.g. by shrinking the ends of the embossments Z 257 (R) on forming the openings, the beads reinforce the edges of the openings and thus prevent tearing of the film. The embossments are usually so arranged as to penetrate into the inner layer, consisting of a fibrous material. Since the beads are located on the outside of the ends of the embossments, they promote an anchoring between the covering film and the intermediate layer, so that the film cannot simply be removed from the intermediate layer and also any shifting of parts of this intermediate layer with respect to the film is impeded. Any unevennesses in the formation of the beads can be advantageous for the connection with the inter-mediate layer.
The film can be provided with embossments and openings on its entire surface or only in specific areas.
The liquid-permeable film is formed from a thermoplastic material which in itself is imperrneable, such as polyethylene, polypropylene, polyvinylchloride or their copolymers. The starting film has a thickness of 0.02 to about 0.06 mm. According to a preferred ~0 process, which is not an object of this invention, first the em-bossments are formed in an embossing nip, or by vacuum-deformation, which embossments are still closed at their ends. By means of heat-ing the end surfaces of the embossments are caused to shrink, as a result of which the openings are formed as well as the beads on the outside of the side walls of the embossments.
As the cross-sections of the embossments are equal over their entire depth, all openings in a film have the same inside cross-section, also if owing to mechanical or thermical influences during manufacturing the depth of the embossments in the finished film should be different. The constant cross-section of the em-bossments, moreover, results in an optimum capillary action. By compressing the article which is prbvided with an absorbent inter-mediate layer and is covered by the film according to the invention on the side from which the liquid is to penetrate, opposite walls of the embossments can be compressed, thus causing a change in the free cross-section. However, no complete shutting can occur and -~
also as a result of the beads there will still be left free passages at least at the ends or corners of the embossments.
A substantial closure of the openings by pressure on the material will become possible if the depth of the embossments is larger than the minimum dimension of their cross-section. In the case of an approximately rectangular shape and a corresponding slit the value chosen for the depth of the embossment will be larger than that of its width. For certain films however, e.g. for a "breathing" film, it may also be desirable that the slit, and the opening, are not shut by the compression to so large an extent, in order ~ still retain a sufficient passage of vapours, if a reductiorl occurs in the passage of liquid possible. Slit and em-bosslllerlt will then be so shaped as to ensure that the depth of the embosslllent is e.g. smaller than its minimum dimension.
3'j If beads 3 are made, e.g. by shrinking the ends of the embossments Z 257 (R) on forming the openings, the beads reinforce the edges of the openings and thus prevent tearing of the film. The embossments are usually so arranged as to penetrate into the inner layer, consisting of a fibrous material. Since the beads are located on the outside of the ends of the embossments, they promote an anchoring between the covering film and the intermediate layer, so that the film cannot simply be removed from the intermediate layer and also any shifting of parts of this intermediate layer with respect to the film is impeded. Any unevennesses in the formation of the beads can be advantageous for the connection with the inter-mediate layer.
The film can be provided with embossments and openings on its entire surface or only in specific areas.
The liquid-permeable film is formed from a thermoplastic material which in itself is imperrneable, such as polyethylene, polypropylene, polyvinylchloride or their copolymers. The starting film has a thickness of 0.02 to about 0.06 mm. According to a preferred ~0 process, which is not an object of this invention, first the em-bossments are formed in an embossing nip, or by vacuum-deformation, which embossments are still closed at their ends. By means of heat-ing the end surfaces of the embossments are caused to shrink, as a result of which the openings are formed as well as the beads on the outside of the side walls of the embossments.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A liquid-permeable film from thermoplastic material com-prising embossments having openings in their ends, the walls of the embossments extending at right angles to the base surface of the film and the cross-section of said embossments remaining constant over their depth and being about equal to the cross-section of the openings at the end of the embossments.
2. A film according to claim 1 comprising embossments, the depth of which is equal to or greater than the minimum dimension of the cross-section of the embossments.
3. A film according to claim 1 comprising slit-shaped em-bossments and openings at the ends of the embossments being arranged in rows, staggered and inclined in alternating direction with respect to the axis of the film.
4. A film according to claim 3 comprising slit-shaped em-bossments, the inclination of which is 45° with respect to the axis of the film.
5. A film according to claim 3 comprising slit-shaped emboss-ments having a cross-section of 0.2 by 6 mm and a depth of at least 0.3 mm.
6. A film according to claim 3 comprising slit-shaped em-bossments having a cross-section of 0.3 by 2 mm and a depth of 0.3 mm.
7. A film according to claim 1 comprising embossments with openings at their ends, the edges of the openings being reinforced by beads.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2806401.9 | 1978-02-15 | ||
| DE2806401A DE2806401C2 (en) | 1978-02-15 | 1978-02-15 | One-way liquid permeable film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1118574A true CA1118574A (en) | 1982-02-23 |
Family
ID=6032054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000321485A Expired CA1118574A (en) | 1978-02-15 | 1979-02-14 | Liquid-permeable film from thermoplastic material |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS55107501A (en) |
| AT (1) | ATA109979A (en) |
| BE (1) | BE874206A (en) |
| CA (1) | CA1118574A (en) |
| CH (1) | CH634470A5 (en) |
| DE (1) | DE2806401C2 (en) |
| DK (1) | DK63879A (en) |
| FR (1) | FR2417389A1 (en) |
| GB (1) | GB2014508B (en) |
| IT (2) | IT1118349B (en) |
| NL (1) | NL7901159A (en) |
| SE (1) | SE433800B (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4342314A (en) | 1979-03-05 | 1982-08-03 | The Procter & Gamble Company | Resilient plastic web exhibiting fiber-like properties |
| US4324246A (en) * | 1980-05-12 | 1982-04-13 | The Procter & Gamble Company | Disposable absorbent article having a stain resistant topsheet |
| US4441952A (en) * | 1981-02-02 | 1984-04-10 | The Procter & Gamble Company | Method and apparatus for uniformly debossing and aperturing a resilient plastic web |
| US4747991A (en) * | 1981-02-02 | 1988-05-31 | The Procter & Gamble Company | Method for debossing and selectively aperturing a resilient plastic web |
| US4509908A (en) * | 1981-02-02 | 1985-04-09 | The Procter & Gamble Company | Apparatus for uniformly debossing and aperturing a resilient plastic web |
| US4463045A (en) * | 1981-03-02 | 1984-07-31 | The Procter & Gamble Company | Macroscopically expanded three-dimensional plastic web exhibiting non-glossy visible surface and cloth-like tactile impression |
| US4601868A (en) * | 1982-04-21 | 1986-07-22 | The Procter & Gamble Company | Method of imparting a three-dimensional fiber-like appearance and tactile impression to a running ribbon of thermoplastic film |
| GB2159417B (en) * | 1984-04-30 | 1987-09-09 | Procter & Gamble | Pantiliner |
| SE449298B (en) * | 1984-05-15 | 1987-04-27 | Moelnlycke Ab | ABSORBING PRODUCT, SUCH AS DAMBINDE, BLOW OR WOUND |
| SE449285B (en) * | 1984-05-15 | 1987-04-27 | Moelnlycke Ab | ABSORBING PRODUCT, SUCH AS BLOW, BINDING OR SAR SURFACE |
| US4637819A (en) * | 1985-05-31 | 1987-01-20 | The Procter & Gamble Company | Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other |
| DE3723404A1 (en) * | 1987-07-15 | 1989-01-26 | Aoe Plastic Gmbh | LIQUID-TRANSFERABLE FILM, ESPECIALLY AS COVER FILM FOR SUCTION, AND METHOD FOR THE PRODUCTION THEREOF |
| DE3919166A1 (en) * | 1989-06-12 | 1990-12-13 | Aoe Plastic Gmbh | FLEXIBLE SURFACE MATERIAL WITH A PERFORATED PLASTIC FILM AND A FIBER LAYER AND METHOD FOR PRODUCING THE SAME |
| ATE135189T1 (en) * | 1990-12-04 | 1996-03-15 | Kang Na Hsiung Enterprise Co L | ABSORBENT PADDING MATERIAL |
| US5514105A (en) * | 1992-01-03 | 1996-05-07 | The Procter & Gamble Company | Resilient plastic web exhibiting reduced skin contact area and enhanced fluid transfer properties |
| JP3510089B2 (en) | 1997-09-22 | 2004-03-22 | ユニ・チャーム株式会社 | Liquid permeable surface sheet for body fluid absorbing article and method for producing the sheet |
| SE512372C2 (en) * | 1998-07-02 | 2000-03-06 | Sca Hygiene Prod Ab | Liquid permeable surface material for disposable absorbent articles, process for their manufacture, and a disposable absorbent article with such surface material |
| US9861533B2 (en) | 2013-05-08 | 2018-01-09 | The Procter & Gamble Company | Apertured nonwoven materials and methods for forming the same |
| CN107106355B (en) | 2014-11-06 | 2020-11-03 | 宝洁公司 | Crimped fiber spunbond nonwoven web/laminate |
| US10940051B2 (en) | 2014-11-06 | 2021-03-09 | The Procter & Gamble Company | Absorbent articles with color effects |
| JP2017533044A (en) | 2014-11-06 | 2017-11-09 | ザ プロクター アンド ギャンブル カンパニー | Absorbent article comprising a laminate facing clothing |
| WO2018152272A1 (en) | 2017-02-16 | 2018-08-23 | The Procter & Gamble Company | Absorbent articles with substrates having repeating patterns of apertures comprising a plurality of repeat units |
| US12127925B2 (en) | 2018-04-17 | 2024-10-29 | The Procter & Gamble Company | Webs for absorbent articles and methods of making the same |
| EP3958809A1 (en) | 2019-04-24 | 2022-03-02 | The Procter & Gamble Company | Highly extensible nonwoven webs and absorbent articles having such webs |
| US20240044129A1 (en) * | 2020-12-17 | 2024-02-08 | Sekisui House, Ltd. | Draining member and building |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB851053A (en) * | 1956-01-03 | 1960-10-12 | Kendall & Co | Treatment of flexible, thermoplastic, organic polymeric sheets and films |
| GB1012963A (en) * | 1961-06-21 | 1965-12-15 | Smith & Nephew | Improvements in and relating to films of thermoplastic material |
| GB1073605A (en) * | 1962-12-21 | 1967-06-28 | Smith & Nephew | Improvements in and relating to perforating films of thermoplastic material |
| GB1116181A (en) * | 1965-01-01 | 1968-06-06 | Bakelite Xylonite Ltd | Improvements in or relating to netting of thermoplastic material |
| GB1120578A (en) * | 1965-09-13 | 1968-07-17 | Grace W R & Co | Improvements in the production of porous film |
| US3929135A (en) * | 1974-12-20 | 1975-12-30 | Procter & Gamble | Absorptive structure having tapered capillaries |
-
1978
- 1978-02-15 DE DE2806401A patent/DE2806401C2/en not_active Expired
-
1979
- 1979-02-13 AT AT0109979A patent/ATA109979A/en not_active IP Right Cessation
- 1979-02-14 CA CA000321485A patent/CA1118574A/en not_active Expired
- 1979-02-14 SE SE7901315A patent/SE433800B/en not_active IP Right Cessation
- 1979-02-14 DK DK63879A patent/DK63879A/en not_active Application Discontinuation
- 1979-02-14 IT IT67317/79A patent/IT1118349B/en active
- 1979-02-14 CH CH145479A patent/CH634470A5/en not_active IP Right Cessation
- 1979-02-14 IT IT7952954U patent/IT7952954V0/en unknown
- 1979-02-14 FR FR7903776A patent/FR2417389A1/en active Granted
- 1979-02-14 NL NL7901159A patent/NL7901159A/en not_active Application Discontinuation
- 1979-02-14 JP JP1594579A patent/JPS55107501A/en active Pending
- 1979-02-15 GB GB7905364A patent/GB2014508B/en not_active Expired
- 1979-02-15 BE BE0/193497A patent/BE874206A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB2014508A (en) | 1979-08-30 |
| FR2417389B1 (en) | 1985-03-01 |
| DK63879A (en) | 1979-08-16 |
| JPS55107501A (en) | 1980-08-18 |
| DE2806401C2 (en) | 1983-09-29 |
| GB2014508B (en) | 1982-04-28 |
| IT7967317A0 (en) | 1979-02-14 |
| IT7952954V0 (en) | 1979-02-14 |
| DE2806401A1 (en) | 1979-08-16 |
| SE7901315L (en) | 1979-08-16 |
| NL7901159A (en) | 1979-08-17 |
| IT1118349B (en) | 1986-02-24 |
| SE433800B (en) | 1984-06-18 |
| BE874206A (en) | 1979-08-16 |
| ATA109979A (en) | 1988-06-15 |
| CH634470A5 (en) | 1983-02-15 |
| FR2417389A1 (en) | 1979-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1118574A (en) | Liquid-permeable film from thermoplastic material | |
| US5009651A (en) | Surface material for sanitary articles and its preparing method | |
| AU602866B2 (en) | Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited & statically contacted fluids from one surface to the other | |
| US20050228353A1 (en) | Formed film having a cellularly defined base pattern and visible design | |
| TWI480030B (en) | Surface sheet for absorbent articles and a method for producing the same, and an absorbent article using the same | |
| EP1016396B1 (en) | Absorbent article having strike window | |
| US5514105A (en) | Resilient plastic web exhibiting reduced skin contact area and enhanced fluid transfer properties | |
| EP0304617B1 (en) | Sanitary article | |
| AU705626B2 (en) | Facing sheet for an absorbent article and method for producing same | |
| US8188333B2 (en) | Plastic sheet looking like cloth and surface material of absorbing goods utilizing the sheet, and manufacturing method thereof | |
| JPS6410225B2 (en) | ||
| JPH01264839A (en) | Polymer web having substantially fluid-impermeable small foam and manufacture thereof | |
| US5693169A (en) | Method for making a capillary laminate material | |
| CA2341046C (en) | Flexible composite sheet | |
| JP3696063B2 (en) | Sanitary article surface material | |
| JPH04146714A (en) | Cleaning wiper | |
| AU749558B2 (en) | Method for making a capillary laminate material | |
| JP4928124B2 (en) | Plastic sheet exhibiting cloth-like appearance, surface material of absorbent article, and method for producing the same | |
| JPH0219153A (en) | Surface material for sanitary goods | |
| GB2296467A (en) | Composite outer sheet and absorbent sheet for absorbent articles | |
| JPH04300545A (en) | Surface material for sanitary goods and production thereof | |
| JPH04114647A (en) | Surface material for sanitary product | |
| MXPA98001832A (en) | Method for preparing a laminated material capi | |
| MXPA97009954A (en) | An absorbent article such as a diaper, an incontinence protector, a sanitary towel or a semile article | |
| JPH01204669A (en) | Surface material of sanitary article |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |