JPS5815537A - Production of release paper - Google Patents
Production of release paperInfo
- Publication number
- JPS5815537A JPS5815537A JP11476981A JP11476981A JPS5815537A JP S5815537 A JPS5815537 A JP S5815537A JP 11476981 A JP11476981 A JP 11476981A JP 11476981 A JP11476981 A JP 11476981A JP S5815537 A JPS5815537 A JP S5815537A
- Authority
- JP
- Japan
- Prior art keywords
- release
- paper
- release paper
- film
- base material
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 239000000123 paper Substances 0.000 claims abstract description 87
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 17
- 230000005855 radiation Effects 0.000 claims abstract description 16
- 229920002050 silicone resin Polymers 0.000 claims abstract description 13
- 238000010894 electron beam technology Methods 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 230000005865 ionizing radiation Effects 0.000 claims abstract description 5
- 239000002655 kraft paper Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 23
- -1 polyethylene Polymers 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000011086 glassine Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000005251 gamma ray Effects 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 239000012298 atmosphere Substances 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 6
- 230000032683 aging Effects 0.000 abstract description 5
- 239000011261 inert gas Substances 0.000 abstract description 2
- 229920001296 polysiloxane Polymers 0.000 description 29
- 239000000853 adhesive Substances 0.000 description 22
- 230000001070 adhesive effect Effects 0.000 description 22
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 238000013270 controlled release Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 101100231696 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FRT2 gene Proteins 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000011088 parchment paper Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
- 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
- B29C59/16—Surface shaping of articles, e.g. embossing; Apparatus therefor by wave energy or particle radiation, e.g. infrared heating
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0844—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using X-ray
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
- B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は剥離力をコントロールした剥離紙（本発明にお
いては剥離力を付与した紙、加工紙、プラスチックフィ
ルム等を併せて剥離紙と総称する）の製造方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a release paper with controlled release force (in the present invention, paper to which release force has been applied, processed paper, plastic film, etc. are collectively referred to as release paper).
感圧粘着シート、感圧粘着ラベル等の発達に伴ない、こ
れらの感圧粘着剤の塗布面を保護する目的で、種々の剥
離紙が用いられるようになったが、これら剥離紙のうち
各種基材表面に剥離性能を有する熱硬化性シリコーン層
を形成させてなる剥離紙の場合、一般にその剥離力はほ
ぼ一定のものしか製造することができず、粘着シート等
に塗布する粘着剤によっては剥離力が小さすぎて、製造
中もしくは使用時に剥離紙から自動的に剥落する場合も
あり、剥離紙の本来の目的の一つである感圧粘着面の保
護機能が失なわねることもある。例えば、剥離力が５ｇ
１５０朋の剥離紙を用いた場合には、ラベル等が容易に
剥離紙から剥がれ落ち、また１ ００ ｇ／ ５０ ｉ
ｍを超える場合にはラベル製造時に不要部分を除去する
のに支障を生ずる。この剥離力は使用している感圧接着
剤によりその値が異なるが、前述のようなトラブルを生
じる場合には、一般に粘着剤の組成、配合、塗布量等を
調節して対処することが行なわれている。しかし、その
調節笥囲は極めて狭いものである。With the development of pressure-sensitive adhesive sheets, pressure-sensitive adhesive labels, etc., various release papers have come to be used to protect the surfaces coated with these pressure-sensitive adhesives. In the case of release paper made by forming a thermosetting silicone layer with release performance on the surface of a base material, it is generally possible to manufacture only one with a nearly constant release force, and it depends on the adhesive applied to the adhesive sheet etc. If the release force is too low, the release paper may automatically peel off during manufacturing or use, and the release paper may lose its protective function for the pressure-sensitive adhesive surface, which is one of the original purposes of the release paper. For example, the peeling force is 5g
When using a 150 mm release paper, the label etc. easily peels off from the release paper, and 100 g/50 i
If it exceeds m, it will be difficult to remove unnecessary parts during label production. The value of this peeling force varies depending on the pressure-sensitive adhesive used, but if the above-mentioned trouble occurs, it is generally dealt with by adjusting the composition, formulation, amount of application, etc. of the adhesive. It is. However, the range of adjustment is extremely narrow.
一方、剥離紙側においても剥離力をコントロールするこ
とにより、前記不都合を防止することが行なわれている
。例えば、前述のシリコーン樹脂層にシリコーンワニス
を混合する方法、もしくはセルロースラッカーを混合す
る方法が試みられている。しかしながら、シリコーンワ
ニスを混合する方法による場合は、その製造時において
は一時的に剥離力を調整でき、所望の剥離力を得られる
ものであるが、経時により剥離力が変化し、剥離紙を使
用する段階では剥離力が一般的に軽くなりすぎるトラブ
ルが生じる。また、セルロース系ラッカーを混合する方
法による場合には、逆に粘着シートを貼付したままで放
置すると、時間の経過と共に剥離力が重くなりすぎて、
剥離紙からラベル等が剥離し難くなるケースが多発して
いた。このような傾向を実例で示すと、伸張性クラフト
紙（７３，ｌｉ’／ｍ）とポリエチレンフィルム（２０
ｇ／ｍ）とを積層した基材のポリエチレン面に、溶剤タ
イプ綜合型シリコーン（シロテックス３２Ａ１ダウコー
ニング製）を５０部と、シリコーンワニス（シロテック
スＸＦ−１７６９、ダウコーニング族）を５０部と、及
び溶剤（トルエン）を９００部とを混合したものをシリ
コーン量として１−０ｇ／ｒｒｔの割合で塗布した後、
これを熱硬化させて製造した剥離紙に、２液型アクリル
タイプの粘着剤を４５ｇ／ｒｒｌの割合で塗布した粘着
シートを貼り付けて、経時的にその剥離力を測定した。On the other hand, the above-mentioned disadvantages are prevented by controlling the release force on the release paper side as well. For example, attempts have been made to mix a silicone varnish or a cellulose lacquer into the silicone resin layer. However, when using the method of mixing silicone varnish, the peeling force can be temporarily adjusted at the time of manufacture and the desired peeling force can be obtained, but the peeling force changes over time and it is difficult to use release paper. At this stage, a problem arises in that the peeling force is generally too light. In addition, when using the method of mixing cellulose-based lacquer, if you leave the adhesive sheet attached and leave it, the peeling force will become too heavy over time.
There were many cases where labels etc. were difficult to peel off from the release paper. Examples of this tendency include stretchable kraft paper (73, li'/m) and polyethylene film (20
g/m) and 50 parts of a solvent-type integrated silicone (Sirotex 32A1 manufactured by Dow Corning) and 50 parts of a silicone varnish (Sirotex XF-1769, Dow Corning family). After applying a mixture of , and 900 parts of a solvent (toluene) at a silicone amount of 1-0 g/rrt,
A pressure-sensitive adhesive sheet coated with a two-component acrylic type pressure-sensitive adhesive at a rate of 45 g/rrl was attached to a release paper produced by heat-curing this, and its peeling force was measured over time.
測定結果は・第１日月の剥離力は１００，９７５０間で
あったが、３０日経過時において同様に粘着シートを貼
合せて剥離力を測定したところ５０ ｇ／ ５０ ｍｍ
に減少しており、更に経時的に剥離力の減少傾向を示し
ていた。また、上記と同一基材に溶剤タイプ縮合型シリ
コーン（シロテックス３２Ａ）１００部と変性メチルセ
ルロース３部と、及び溶剤９００部とを混合したものを
シリコーン量として１．０ｇ／Ｉの割合で塗布した後、
これを熱硬化させて製造した剥弊紙に前記と同一の粘着
シートを貼り付けて、その剥離力を経時的に測定した。The measurement results were: - The peeling force on the first day and month was 100,9750, but after 30 days, when the adhesive sheet was laminated in the same way and the peeling force was measured, it was 50 g / 50 mm.
The peeling force further decreased over time. In addition, a mixture of 100 parts of solvent-type condensation silicone (Sirotex 32A), 3 parts of modified methyl cellulose, and 900 parts of solvent was applied to the same base material as above at a silicone amount of 1.0 g/I. rear,
The same pressure-sensitive adhesive sheet as above was attached to a peeling paper produced by thermosetting this, and its peeling force was measured over time.
測定結果は、第１日月の剥離力は２００ 、ｉｉ’ ／
５０ ＩＩであったが、３０日経過後は３５０，９１
５０Ｉ１１！に増加しており、この増加傾向は更に続い
ていた。The measurement results show that the peeling force on the first day and month is 200, ii' /
50 II, but after 30 days it was 350,91
50I11! , and this increasing trend continued.
上記二例に示すように、剥離剤及びその配合において剥
離紙の剥離力を所望のレベルで、しかも経時変化するこ
となく維持させることは現状では極めて困雛なことであ
る。As shown in the above two examples, it is currently extremely difficult to maintain the release force of a release paper at a desired level without changing over time using a release agent and its formulation.
本発明者らは上記問題を解決するために種々検討を加え
ているうちに、基材表面に形成された剥離性能を有する
熱硬化性シリコーン樹脂に低線量の放射線を照射すると
、照射する放射線量及び照射する雰囲気中の酸素濃度に
応じて剥離力が極めて容易に、かつ安定して変化するこ
とを見出し、本発明を完成させるに至った。The present inventors conducted various studies to solve the above problems, and found that when a low dose of radiation is irradiated to a thermosetting silicone resin with peelability formed on the surface of a base material, the amount of radiation irradiated is The present inventors have also discovered that the peeling force changes very easily and stably depending on the oxygen concentration in the irradiated atmosphere, and have completed the present invention.
即ち、本発明は熱硬化性シリコーン樹脂よりなる剥離層
を基材表面に有する剥離紙の剥離層に照射装置が５メガ
ラド以下の電離性放射線を照射することにより剥離力を
コントロールした剥離紙の製造方法を提供することを目
的とするものである。That is, the present invention relates to the production of a release paper in which the release force is controlled by irradiating the release layer of release paper, which has a release layer made of thermosetting silicone resin on the surface of the base material, with ionizing radiation of 5 megarads or less using an irradiation device. The purpose is to provide a method.
以下、本発明の一実施例につき第１図及び第２図を参照
して説明する。Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 and 2.
第１図は本発明方法の実施に使用する剥離力をコントロ
ールした剥離紙の製造装置の一例を示すもので、図中１
は所定速度で矢印Ｚ方向に走行する剥離紙である。Figure 1 shows an example of a release paper manufacturing apparatus with controlled peeling force used in the method of the present invention.
is a release paper that runs in the direction of arrow Z at a predetermined speed.
この剥離紙１け基材表面に熱硬化シリコーンを塗布し熱
風オーブンで加熱する等の方法により、基材表面に剥離
力を有する熱硬化性シリコーン樹脂層を一体に形成した
もので、基材としてはクラフト紙、グラシン紙、上質紙
、パーチメント紙等の紙、もしくはとわらの紙にポリエ
チレンフィルム、ポリプロピレンフィルム、ポリエチレ
ンテレフタレートフィルム、ポリアミドフィルム、ポリ
塩化ビニルフィルム等の合成樹脂フィルムをその片面又
は両面に積層加工した合成樹脂加工紙や、ポリエチレン
フィルム、ポリプロピレンフィルム、ポリエチレンテレ
フタレートフィルム、ポリアミドフィルム、ポリ塩化ビ
ニルフィルム等の合成樹脂フィルム又はこれらのフィル
ムの２以上を積層した複合フィルムが好ましい。A thermosetting silicone resin layer with release force is integrally formed on the surface of the substrate by applying thermosetting silicone on the surface of the substrate and heating it in a hot air oven. is paper such as kraft paper, glassine paper, high quality paper, parchment paper, or straw paper with a synthetic resin film such as polyethylene film, polypropylene film, polyethylene terephthalate film, polyamide film, polyvinyl chloride film, etc. on one or both sides. Preferred are laminated synthetic resin-treated paper, synthetic resin films such as polyethylene film, polypropylene film, polyethylene terephthalate film, polyamide film, and polyvinyl chloride film, or composite films in which two or more of these films are laminated.
前記基材表面に塗布してこれを加熱硬化させることによ
り基材表面に剥離力を付与する熱硬化性シリコーンとし
ては溶剤系、エマルジョン系又は無溶媒系の縮合型又は
付加型シリコーンが用いられる。As the thermosetting silicone that imparts release force to the surface of the substrate by applying it to the surface of the substrate and heating and curing it, solvent-based, emulsion-based, or solvent-free condensation-type or addition-type silicones are used.
前記基材とシリコーンを用いて剥離紙１を製造する方法
としては、公知の方法、例えば基材面にロールコータ−
で熱硬化性シリコーンを塗布し、次いで熱風オーブン等
で加熱することにより、熱硬化性シリコーンを熱硬化さ
せ、これにより基材表面に熱硬化性シリコーン樹脂層を
有する剥離紙１を得る方法等が採用し得るほか、この剥
離紙１は一般に市販されている剥離紙をそのまま使用す
ることもできる。The method for producing the release paper 1 using the base material and silicone is a known method, for example, a roll coater on the base material surface.
A method for obtaining a release paper 1 having a thermosetting silicone resin layer on the surface of the base material by applying thermosetting silicone and then heating it in a hot air oven or the like to heat cure the thermosetting silicone. In addition to this, a commercially available release paper can also be used as it is as the release paper 1.
前記剥離紙１け、次いで走行方向前方に配設された放射
線照射装置２に至り、この中を通過する際に電離性放射
線が照射される。The sheet of release paper then reaches a radiation irradiation device 2 disposed in front of it in the traveling direction, and is irradiated with ionizing radiation as it passes through this.
この放射線照射装ｆｒｔ２は電子線を照射するものであ
るが、電子線の照射線量としては５メガラド以下、特に
０．１〜５．０メガラドとすることが好ましく、照射線
量が５メガラドを越える場合には剥離紙１に劣化を生じ
させることがある。This radiation irradiation device FRT2 irradiates an electron beam, and the irradiation dose of the electron beam is preferably 5 megarads or less, particularly 0.1 to 5.0 megarads, and when the irradiation dose exceeds 5 megarads. may cause deterioration of the release paper 1.
前記照射装置２の照射部３の雰囲気は、ポンベ４から送
られる窒素ガス、ヘリウムガス、アルゴンガス等の不活
性ガスによって酸素濃度を任意に設定するととができ、
この酸素濃度、放射線の種類及び照射線量を調節するこ
とにより、本発明により得られる剥離紙の剥離力を任意
にコントロールし得るものである。The atmosphere in the irradiation section 3 of the irradiation device 2 can have an oxygen concentration arbitrarily set using an inert gas such as nitrogen gas, helium gas, or argon gas sent from the pump 4.
By adjusting the oxygen concentration, the type of radiation, and the irradiation dose, the peeling force of the release paper obtained by the present invention can be arbitrarily controlled.
即ち、放射線としてγ線を用いる場合には、照射雰囲気
中の酸素濃度は剥離力にあまり影響を与えないが、放射
線として電子線及びＸ線を用いた場合には、酸素濃度と
剥離力とはほぼ比例関係がある。また、同−酸素濃度雰
囲気中においては照射線量と剥離力とは比例する。That is, when using γ-rays as radiation, the oxygen concentration in the irradiation atmosphere does not have much effect on the peeling force, but when using electron beams and X-rays as radiation, the oxygen concentration and peeling force are There is an almost proportional relationship. Furthermore, in an atmosphere with the same oxygen concentration, the irradiation dose and peeling force are proportional.
照射装置を通過する際に放射線を照射された剥離紙１け
、これにより第２図に示すようにその基材５表面に形成
したシリコーン樹脂よりなる剥離層６の剥離力がコント
ロールされ、約７日間のエージング期間経過後における
剥離力を所望のものとすることができる。A sheet of release paper is irradiated with radiation as it passes through the irradiation device, thereby controlling the release force of the release layer 6 made of silicone resin formed on the surface of the base material 5, as shown in FIG. The peeling force after the aging period of 1 day can be set to a desired value.
このようにして製造された剥離紙は適宜裁断され、感圧
粘着シートの粘着面の保護や粘着テープ基材等として使
用される。The release paper produced in this manner is appropriately cut and used to protect the adhesive surface of a pressure-sensitive adhesive sheet, as a base material for an adhesive tape, and the like.
本実施例においては、基材表面に熱硬化性シリコーン樹
脂層を形成してなる剥離紙に放射線を照射することによ
り、得られる剥離紙の剥離力な任意にコントロールでき
、しかもエージング期間（約７日間）経過後の剥離力の
経時変化を簡単かつｐα実に防止し得るものである。そ
して、照射線量を５メガラド以下の低線量にしているの
で、剥離層や基材を損うこともない。In this example, by irradiating a release paper formed with a thermosetting silicone resin layer on the surface of a base material, the release force of the resulting release paper can be arbitrarily controlled, and the aging period (approximately 7 It is possible to easily and effectively prevent changes in the peeling force over time after the lapse of several days. Furthermore, since the irradiation dose is set to a low dose of 5 megarads or less, there is no damage to the release layer or base material.
なお、本実施１例においては剥離紙を水平方向に走行さ
せながら放射線を照射したがこれに限られず、剥離紙を
ロール状に巻取ったままγ線等をこれに照射することも
でき、また基材の供給方法も熱可塑性合成樹脂を連続的
に押出し機でフィルム状に押出しながら供給するように
しても良く、更に基材の両面にシリコーン樹脂層を形成
することにより両面剥離紙とすることもでき、その他本
発明の要旨を逸脱しない範囲で種々変形して差支えない
。In Example 1, the release paper was irradiated with radiation while running in the horizontal direction, but the release paper is not limited to this; it is also possible to irradiate the release paper with γ-rays, etc. while the release paper is being wound into a roll. The base material may also be supplied by continuously extruding the thermoplastic synthetic resin into a film using an extruder, and by forming a silicone resin layer on both sides of the base material, a double-sided release paper can be obtained. Various modifications may be made without departing from the spirit of the present invention.
このように本発明方法により放射線を照射して製造した
本発明方法に係る剥離紙のエージング期間経過後の剥離
力の経時変化は極めて少ないもので、とねを粘着シート
等の粘着面に貼着して、使用時に至るまでの期間粘着面
を保護する場合、剥離力が変化して粘着面から剥離紙が
使用前に剥落するような不都合もない。As described above, after the aging period of the release paper manufactured by the method of the present invention by irradiation with radiation, the peeling force changes over time is extremely small, and the release paper produced by the method of the present invention by irradiation with radiation shows very little change over time, and it is possible to attach the strips to the adhesive surface of an adhesive sheet, etc. In this way, when protecting the adhesive surface for a period of time until use, there is no inconvenience such as the peeling force changing and the release paper peeling off from the adhesive surface before use.
また、シリコーン剥離層に残留している遊離シリコーン
が放射線を照射するこ七により固定され、粘着シート等
の粘着剤面に付着することもなく、粘着剤の残留接着性
能を向上させる効果も併せもつものでキンる。In addition, the free silicone remaining on the silicone release layer is fixed by the radiation irradiation, and does not stick to the adhesive surface of the adhesive sheet, which also has the effect of improving the residual adhesive performance of the adhesive. I get excited about things.
以下、実施例により本発明を更に具体的に説明する。Hereinafter, the present invention will be explained in more detail with reference to Examples.
〔実施例１〕
伸張性クラフト紙（７３９／ｍ’）の片面にｙｊｅ Ｉ
Ｊエチレンフィルム（２０，９／ｍ）を積層した基材を
用いて、このポリエチレンフィルムの表面に付加型熱硬
化性シリコーン（信越シリコーンＫＳ ７７３、信越化
学製）を１．０ｉ／ｍｌの割合で塗布し、これを熱風オ
ーブンで加熱硬化させて剥離紙を得、これをロールに巻
き増った。次いで、この巻き取った剥離紙に外部から下
表に示す線量のγ線を照射して剥離力をコントロールし
た剥離紙（本発明に係る剥離紙）を製造した。このよう
にして製造した剥離紙を粘着シート（粘着剤、アクリル
２液タイプＳＫ−ダイン７０１、練餌化学製）の粘着面
に貼着し、経時的に剥離力を測定した結果を第３図に示
した。なお、比較の為にγ線未照射の剥離紙を用いて剥
離力を測定した結果も同図に示した（比較品）０
第３図から明らかなように、γ線を照射した本発明に係
る剥離紙の剥離力は粘着シートを貼着後約１週間（エー
ジング期間）でほぼ一定の値に到達し、以後は剥離力の
値の変動はほとんど認められず、また照射線量を変える
ことにより適度の剥離力を有する剥離紙を任意に製造で
きた。これに対し、比較品においては剥離（力が小さく
、本目的には使用できなかった。（同図曲線Ｇ）。[Example 1] yje I on one side of stretchable kraft paper (739/m')
Using a base material laminated with J ethylene film (20.9/m), addition type thermosetting silicone (Shin-Etsu Silicone KS 773, manufactured by Shin-Etsu Chemical) was applied to the surface of this polyethylene film at a rate of 1.0 i/ml. This was coated and cured by heating in a hot air oven to obtain a release paper, which was then wound into a roll. Next, this rolled up release paper was externally irradiated with gamma rays at doses shown in the table below to produce a release paper (release paper according to the present invention) with controlled release force. The release paper produced in this way was attached to the adhesive surface of an adhesive sheet (adhesive, 2-component acrylic type SK-Dyne 701, manufactured by Nerusei Chemical Co., Ltd.), and the peeling force was measured over time. The results are shown in Figure 3. It was shown to. For comparison, the results of measuring the peeling force using a release paper that has not been irradiated with γ-rays are also shown in the same figure (comparative product). The peeling force of the release paper reaches a nearly constant value approximately one week after the adhesive sheet is attached (aging period), and after that, there is almost no change in the value of the peeling force, and by changing the irradiation dose. It was possible to arbitrarily produce a release paper with an appropriate release force. On the other hand, the comparative product had a small peeling force and could not be used for this purpose (curve G in the figure).
照射線量（メガラド）
ＡＯ１■
Ｂ Ｏ，２
ＣＯ，３
Ｄ Ｏ，５
Ｉ
３
Ｏ
〔実施例２〕
実施例１０基材を用いて、このポリエチレンフィルム面
に付加型熱硬化シリコーン（信越シリコーンＫＳ−７７
９、信越化学製）を１．０ ｇ／ｆｆｌの割合で塗布し
て実施例１と同条件で剥離紙を製造した。また、この剥
離紙を試料として実施例１に同一条件で経時的に剥離力
を測定した結果を第４図に示した。なお図中Ａ〜Ｇの各
記号はそれぞれ第３図の記号と同一内容を示す。Irradiation dose (Megarad) AO1■ B O,2 CO,3 D O,5 I3O [Example 2] Using the base material of Example 10, addition type thermosetting silicone (Shin-Etsu Silicone KS- 77
9 (manufactured by Shin-Etsu Chemical) at a rate of 1.0 g/ffl to produce a release paper under the same conditions as in Example 1. Further, using this release paper as a sample, the release force was measured over time under the same conditions as in Example 1, and the results are shown in FIG. Note that each symbol A to G in the figure indicates the same content as the symbol in FIG. 3, respectively.
第４図から明らかなように、本発明に係る剥離紙の剥離
力は粘着シートな貼着後約１週間でほぼ一定値となり、
それ以後は剥離力の変動はほとんど認められなかった。As is clear from FIG. 4, the peeling force of the release paper according to the present invention becomes a nearly constant value about one week after being attached to the adhesive sheet.
After that, almost no change in peeling force was observed.
〔実施例３〕
実施例１の基材を用いて、このポリエチレンフィルム面
に一般タイブである縮合型熱硬化シリコーン（シロテッ
クス３２Ａ１ダウコーニング製）を１．ｏｌｌ／ｃｕｔ
の割合で塗布し、実施例と同一条件で本発明に係る剥離
紙を製造、した。この剥離紙を用いて実施例１と同一条
件で剥離力の経時変化を測定した結果を第５図に示した
。なお、図中Ａ〜Ｇの各記号は第３図の記号と同一内容
を示す。[Example 3] Using the base material of Example 1, a general type of condensation type thermosetting silicone (Sirotex 32A1 manufactured by Dow Corning) was coated on the polyethylene film surface. oll/cut
A release paper according to the present invention was produced under the same conditions as in the examples. Using this release paper, the change in release force over time was measured under the same conditions as in Example 1. The results are shown in FIG. Note that each symbol A to G in the figure indicates the same content as the symbol in FIG.
第５図から明らかなように、本発明に係る剥離紙及び比
較品の測定結果はそれぞれ実施例１の結果と同様の傾向
を示した。As is clear from FIG. 5, the measurement results of the release paper according to the present invention and the comparative product showed the same tendency as the results of Example 1.
〔実施例４〕
実施例１０基材を用いて、このｉｅ ＩＪエチレン面に
溶剤タイプ付加型シリコーン（信越シリコーンＫＳ −
７７３、信越化学製）を１−０９／ｒｌの割合で塗布し
、これを熱風オーブン中て加熱してシリコーンを硬化さ
せ、剥離紙を得た。次いでこの積層フィルムに空気雰囲
気中で線量り異なるγ線を照射した剥離紙を得た（本発
明に係る剥離紙）。この剥離紙を粘着シート（粘着剤、
アクリル２液タイプＳＫ−ダイン７０１、練餌化学製）
の粘着面に貼着し、７日間室温に放置した後、剥離力を
測定した結果を第６図中折線■で示した。[Example 4] Using the base material of Example 10, solvent-type addition silicone (Shin-Etsu Silicone KS-) was applied to the ie IJ ethylene surface.
773 (manufactured by Shin-Etsu Chemical Co., Ltd.) at a ratio of 1-09/rl and heated in a hot air oven to cure the silicone to obtain a release paper. Next, release paper was obtained by irradiating this laminated film with different doses of γ-rays in an air atmosphere (release paper according to the present invention). This release paper is attached to an adhesive sheet (adhesive,
Acrylic 2-component type SK-Dyne 701, manufactured by Nerusei Chemical)
After adhering to the adhesive surface of the tape and leaving it at room temperature for 7 days, the peeling force was measured and the results are shown by the folded line (■) in FIG.
また、セミグラシン紙（６６、！ｉ’／ｍ）を基材とし
、この−面に溶剤タイプの縮合型シリコーン（シロテッ
クス３２Ａ１ダウコーニング製）ヲ１．５９ ／ ｍ”
の割合で塗布し、これを熱風オーブン中で加熱してシリ
コーンを硬化させた。以後、上記と同様にして製造し、
剥離力を測定した結果を第６図中折線Ｊで示した。In addition, semi-glassine paper (66,!i'/m) was used as the base material, and a solvent-type condensation silicone (Sirotex 32A1 manufactured by Dow Corning) was applied to the surface of this paper (1.59/m").
The silicone was cured by heating it in a hot air oven. Thereafter, manufacture in the same manner as above,
The results of measuring the peeling force are shown by the folded line J in FIG.
第６図から明らかなように、剥離紙に低重量のγ線を照
射することにより、剥離紙に適当な剥離力を付与し得る
と共に、この剥離力は照射線量にほぼ比例するものであ
った。As is clear from Figure 6, by irradiating the release paper with low-weight gamma rays, it was possible to impart an appropriate peeling force to the release paper, and this peeling force was approximately proportional to the irradiation dose. .
〔実施例５〕
基材に３５μ厚のポリエステルフィルムを用い、この−
面に溶剤タイプの付加型シリコーン（信越シリコーンＫ
Ｓ−７７３、信越化学制）を０．５９ ／ゴの割合で塗
布し、これを熱風オーブン中で加熱してシリコーンを硬
化させて剥離紙を製造すると共に、これを電子線照射装
置に導き、濃度８００ ｐｐｍの酵素を含有する窒素雰
囲気中で電子線を照射して剥離紙（本発明に係る剥離紙
）を製造ｌ−た。[Example 5] Using a 35μ thick polyester film as the base material, this -
Solvent-type addition type silicone on the surface (Shin-Etsu Silicone K)
S-773, Shin-Etsu Chemical System) was applied at a ratio of 0.59/g, heated in a hot air oven to harden the silicone to produce a release paper, and introduced into an electron beam irradiation device. A release paper (release paper according to the present invention) was produced by irradiating it with an electron beam in a nitrogen atmosphere containing an enzyme at a concentration of 800 ppm.
この剥離紙を実施例４で用いた粘着シートに貼着し、７
日間室温下で放置した後、その剥離力を経時的に測定し
たところ、第７図に示すように剥離力は電子線の照射量
によりコントロールされると共に、その変動はほとんど
ないことが確認された。なお図中Ｅ、 Ｆ、 Ｇの各
記号はそれぞれ第３図の記号と同一内容を示す。This release paper was pasted on the adhesive sheet used in Example 4, and
After being left at room temperature for several days, the peeling force was measured over time. As shown in Figure 7, it was confirmed that the peeling force was controlled by the amount of electron beam irradiation and that there was almost no variation in the peeling force. . Note that the symbols E, F, and G in the figure indicate the same contents as the symbols in FIG. 3, respectively.
第１図は本発明の実施に使用する剥離紙の製造装置の一
例を示す概略側面図、第２図は本発明に係る剥離紙の一
例を示す側面図、第３〜５図はそれぞれ本発明に係る剥
離紙の剥離力と経過時間との関係を示すグラフ、第６，
７図はそれぞれ本発明に係る剥離紙と照射線量との関係
を示すグラフである。
１・・・剥離紙、２・・・放射線照射装置、４・・・ボ
ンベ、５・・・基材、６・・・剥離層、７・・・剥離紙
、８・・・巻取りロール
出 願 呑 藤森工業株式会社
代理人弁理士 高 畑 端 世
弁理士 小 島 隆 司FIG. 1 is a schematic side view showing an example of a release paper manufacturing apparatus used in carrying out the present invention, FIG. 2 is a side view showing an example of a release paper according to the present invention, and FIGS. Graph showing the relationship between the peeling force of the release paper and the elapsed time, No. 6,
FIG. 7 is a graph showing the relationship between release paper and irradiation dose according to the present invention. DESCRIPTION OF SYMBOLS 1... Release paper, 2... Radiation irradiation device, 4... Cylinder, 5... Base material, 6... Release layer, 7... Release paper, 8... Winding roll output Nen Gan, Patent Attorney for Fujimori Industries Co., Ltd. Hajime Takahata, Patent Attorney Takashi Kojima
Claims (1)
面に有する剥離紙の剥離層に照射線量が５メｆラド以下
の電離性放射線を照射することを特徴とする剥離力をコ
ントロールした剥離紙の製造方法。 ２、基材がクラフト紙、グラシン紙、上質紙、ノ母−チ
メント紙等の紙、もしくはこれらの紙に合成樹脂フィル
ムをその片面又は両面に積層加工した合成樹脂加工紙で
ある特許請求の範囲第１項記載の製造方法。 ３、基材がポリエチレンフィルム、ポリプロピレンフィ
ルム、ポリエチレンテレフタレートフィルム、ポリアミ
ドフィルム、ポリ塩化ビニルフィルム等の合成樹脂フィ
ルム又はこれらのフィルムの２以上を積層した複合フィ
ルムである特許請求の範囲第１項記載の製造方法０ ４、剥離層が付加型シリコーン樹脂を加熱硬化させたも
のである特許請求の範囲第１項乃至第３項いずれか記載
の製造方法。 ５、剥離層が網台型シリコーン樹脂を加熱硬化させたも
のである特許請求の範囲第１項乃至第３項いずれか記載
の製造方法。 ６．１！離性放射線が電子線、γ線又はＸ線である特許
請求の範囲第１項乃至第５項いずれか記載の製造方法。[Claims] 1. A release method characterized by irradiating a release layer of a release paper having a release layer made of a thermosetting silicone resin on the surface of a base material with ionizing radiation at a dose of 5 mef or less. A method for manufacturing release paper that controls force. 2. Claims in which the base material is paper such as kraft paper, glassine paper, high-quality paper, or motherboard paper, or synthetic resin-treated paper obtained by laminating a synthetic resin film on one or both sides of these papers. The manufacturing method according to item 1. 3. The base material is a synthetic resin film such as a polyethylene film, a polypropylene film, a polyethylene terephthalate film, a polyamide film, a polyvinyl chloride film, or a composite film in which two or more of these films are laminated. Manufacturing method 0 4. The manufacturing method according to any one of claims 1 to 3, wherein the release layer is obtained by heating and curing an addition type silicone resin. 5. The manufacturing method according to any one of claims 1 to 3, wherein the release layer is made by heating and curing a mesh type silicone resin. 6.1! 6. The manufacturing method according to any one of claims 1 to 5, wherein the separable radiation is an electron beam, gamma ray, or X-ray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11476981A JPS5815537A (en) | 1981-07-22 | 1981-07-22 | Production of release paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11476981A JPS5815537A (en) | 1981-07-22 | 1981-07-22 | Production of release paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5815537A true JPS5815537A (en) | 1983-01-28 |
| JPS6118931B2 JPS6118931B2 (en) | 1986-05-15 |
Family
ID=14646224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11476981A Granted JPS5815537A (en) | 1981-07-22 | 1981-07-22 | Production of release paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5815537A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60258280A (en) * | 1984-06-01 | 1985-12-20 | Sanyo Kokusaku Pulp Co Ltd | Releasing paper |
| JPS61245397A (en) * | 1985-04-04 | 1986-10-31 | 日本製紙株式会社 | Release paper and its production |
| JPS61258747A (en) * | 1985-05-11 | 1986-11-17 | 日東電工株式会社 | Mold release treating base body |
| JPS61276824A (en) * | 1985-05-02 | 1986-12-06 | レイケム・コ−ポレイシヨン | Radiation graft of organopolysiloxane |
| JPS63104835A (en) * | 1986-10-22 | 1988-05-10 | 日東電工株式会社 | Laminated paper |
| JPH0335283A (en) * | 1989-06-30 | 1991-02-15 | Kanzaki Paper Mfg Co Ltd | Label for concealing |
| JPH0544847U (en) * | 1991-11-19 | 1993-06-15 | 株式会社資生堂 | Lid plug fitting mechanism |
| WO2000031199A1 (en) * | 1998-11-23 | 2000-06-02 | Francois Jean Marc | A pressure-sensitive adhesive laminate, a method and a device for modifying an initial release force in such a laminate |
| JP2006206727A (en) * | 2005-01-27 | 2006-08-10 | Nitto Denko Corp | Method for adjusting peel strength, adhesive layer for optical member and method for producing the same, optical member with adhesive and image display device |
| US7498074B2 (en) | 2003-01-17 | 2009-03-03 | Toppan Printing Co., Ltd. | Metal photoetching product and production method thereof |
| JP2009058961A (en) * | 2008-10-02 | 2009-03-19 | Osaka Sealing Printing Co Ltd | Non-separator type thermosensitive recording label, label continuous body, and manufacturing method therefor |
| WO2014061264A1 (en) * | 2012-10-15 | 2014-04-24 | 東洋インキＳｃホールディングス株式会社 | Wound roll |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5177800A (en) * | 1974-12-09 | 1976-07-06 | Energy Sciences Inc | KITAIJONIKEISEISHITATOMAKUODENSHIBIIMUNYOTSUTEKOKASHORISURUTAMENOHOHO OYOBI SOCHI |
-
1981
- 1981-07-22 JP JP11476981A patent/JPS5815537A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5177800A (en) * | 1974-12-09 | 1976-07-06 | Energy Sciences Inc | KITAIJONIKEISEISHITATOMAKUODENSHIBIIMUNYOTSUTEKOKASHORISURUTAMENOHOHO OYOBI SOCHI |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0221425B2 (en) * | 1984-06-01 | 1990-05-14 | Sanyo Kokusaku Pulp Co | |
| JPS60258280A (en) * | 1984-06-01 | 1985-12-20 | Sanyo Kokusaku Pulp Co Ltd | Releasing paper |
| JPS61245397A (en) * | 1985-04-04 | 1986-10-31 | 日本製紙株式会社 | Release paper and its production |
| JPH0321585B2 (en) * | 1985-04-04 | 1991-03-25 | Sanyo Kokusaku Pulp Co | |
| JPS61276824A (en) * | 1985-05-02 | 1986-12-06 | レイケム・コ−ポレイシヨン | Radiation graft of organopolysiloxane |
| JPS61258747A (en) * | 1985-05-11 | 1986-11-17 | 日東電工株式会社 | Mold release treating base body |
| JPS63104835A (en) * | 1986-10-22 | 1988-05-10 | 日東電工株式会社 | Laminated paper |
| JP2680432B2 (en) * | 1989-06-30 | 1997-11-19 | 王子製紙株式会社 | Concealment label |
| JPH0335283A (en) * | 1989-06-30 | 1991-02-15 | Kanzaki Paper Mfg Co Ltd | Label for concealing |
| JPH0544847U (en) * | 1991-11-19 | 1993-06-15 | 株式会社資生堂 | Lid plug fitting mechanism |
| WO2000031199A1 (en) * | 1998-11-23 | 2000-06-02 | Francois Jean Marc | A pressure-sensitive adhesive laminate, a method and a device for modifying an initial release force in such a laminate |
| US7498074B2 (en) | 2003-01-17 | 2009-03-03 | Toppan Printing Co., Ltd. | Metal photoetching product and production method thereof |
| US8110344B2 (en) | 2003-01-17 | 2012-02-07 | Toppan Printing Co., Ltd. | Metal photoetching product and production method thereof |
| JP2006206727A (en) * | 2005-01-27 | 2006-08-10 | Nitto Denko Corp | Method for adjusting peel strength, adhesive layer for optical member and method for producing the same, optical member with adhesive and image display device |
| JP2009058961A (en) * | 2008-10-02 | 2009-03-19 | Osaka Sealing Printing Co Ltd | Non-separator type thermosensitive recording label, label continuous body, and manufacturing method therefor |
| WO2014061264A1 (en) * | 2012-10-15 | 2014-04-24 | 東洋インキＳｃホールディングス株式会社 | Wound roll |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6118931B2 (en) | 1986-05-15 |
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