JPH03285974A - Production of tacky film or sheet - Google Patents
Production of tacky film or sheetInfo
- Publication number
- JPH03285974A JPH03285974A JP8624890A JP8624890A JPH03285974A JP H03285974 A JPH03285974 A JP H03285974A JP 8624890 A JP8624890 A JP 8624890A JP 8624890 A JP8624890 A JP 8624890A JP H03285974 A JPH03285974 A JP H03285974A
- Authority
- JP
- Japan
- Prior art keywords
- film
- zone
- photosensitive composition
- light
- photopolymerization
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000000203 mixture Substances 0.000 claims abstract description 57
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000001301 oxygen Substances 0.000 claims abstract description 30
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000001678 irradiating effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 19
- 239000002313 adhesive film Substances 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 3
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 3
- 230000000379 polymerizing effect Effects 0.000 abstract description 2
- 238000006116 polymerization reaction Methods 0.000 description 23
- 239000010410 layer Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 13
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 239000000178 monomer Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004743 Polypropylene 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
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- NUHSROFQTUXZQQ-UHFFFAOYSA-N isopentenyl diphosphate Chemical compound CC(=C)CCO[P@](O)(=O)OP(O)(O)=O NUHSROFQTUXZQQ-UHFFFAOYSA-N 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
Description
本発明は粘着フィルムまたはシートの製造方法に関する
。
更に詳細には、フィルム状基材の表面に感光性組成物層
を設け、光を照射して、この感光性組成物をフィルム状
基材上で重合させる粘着フィルムまたはシートの製造方
法に関する。The present invention relates to a method for producing an adhesive film or sheet. More specifically, the present invention relates to a method for producing an adhesive film or sheet, in which a photosensitive composition layer is provided on the surface of a film-like base material, and the photosensitive composition is polymerized on the film-like base material by irradiation with light.
従来、フィルム状基材の上に、感光性組成物層を設け、
光を照射して、この感光性組成物を重合させる粘着フィ
ルムまたはシートの製造方法は公知である。
例えば、特開昭５８−１１８８７３号公報には粘着フィ
ルムの製造法と題して、フィルム状基材の上に感光性組
成物を塗布し、光を照射してこの感光性組成物を重合さ
せる方法について記載されている。Conventionally, a photosensitive composition layer is provided on a film-like base material,
A method for producing an adhesive film or sheet in which a photosensitive composition is polymerized by irradiation with light is known. For example, Japanese Patent Application Laid-Open No. 58-118873 describes a method for producing an adhesive film, in which a photosensitive composition is applied onto a film-like base material, and the photosensitive composition is polymerized by irradiation with light. It is written about.
上記製造方法は、感光性組成物中に溶存する酸素濃度が
高いと、重合が阻害さるので、従来、光重合室に入る前
に溶存酸素濃度を低下させるか、雰囲気酸素濃度を１１
０００ｐｐ以下に保った光重合室の中で感光性組成物層
に光を照射して重合させていた。
そして、この雰囲気酸素濃度を１１０００ｐｐ以下にす
るには、通常、この光重合室の中にＮ２ガスを流し、光
重合室の空気をＮ２ガスに入れ換える方法で行われてい
るが、この方法では、光重合室全体の雰囲気酸素濃度を
１１０００ｐｐ以下に保つため、大量のＮ２ガスが必要
である。これを改善するめ、Ｎ２ガス循環式光重合室を
採用してＮ２ガスの使用量を節約していた。
又、光重合室に導く前に、感光性組成物中に溶存する酸
素量を減少する方法は、原料モノマー液の中の酸素を除
いたり、フィルム状基材に感光性組成物を塗布する塗布
室の雰囲気の酸素濃度を低くする方法が行われていた。
しかし、いずれも、大規模な設備が必要とし、煩瑣であ
るという問題があった。
そこで、本発明は、かかる大規模な設備を必要とせず、
Ｎ２ガスの使用量を少なくし、簡単に光重合が行なえる
粘着フィルムまたはシートの製造方法を提供することを
目的とする。In the above manufacturing method, if the concentration of oxygen dissolved in the photosensitive composition is high, polymerization will be inhibited, so conventionally, the dissolved oxygen concentration is reduced before entering the photopolymerization chamber, or the atmospheric oxygen concentration is reduced to 11%.
The photosensitive composition layer was irradiated with light and polymerized in a photopolymerization chamber maintained at 000 pp or less. In order to reduce the atmospheric oxygen concentration to 11,000 pp or less, the usual method is to flow N2 gas into the photopolymerization chamber and replace the air in the photopolymerization chamber with N2 gas. A large amount of N2 gas is required to maintain the atmospheric oxygen concentration in the entire photopolymerization chamber at 11,000 pp or less. In order to improve this, a photopolymerization chamber with N2 gas circulation was adopted to save the amount of N2 gas used. In addition, methods for reducing the amount of oxygen dissolved in the photosensitive composition before introducing it into the photopolymerization chamber include removing oxygen from the raw monomer solution or coating the photosensitive composition on a film-like substrate. A method was used to lower the oxygen concentration in the chamber atmosphere. However, both methods require large-scale equipment and are cumbersome. Therefore, the present invention does not require such large-scale equipment,
It is an object of the present invention to provide a method for producing an adhesive film or sheet that can be easily photopolymerized while reducing the amount of N2 gas used.
本発明は、上記問題を解決し、上記目的を達成するため
になしたもので、フィルム状基材の表面に感光性組成物
層を設けた後、光を照射しながら光重合ゾーンを通過さ
せ、前記感光性組成物をフィルム状基村上で重合させる
粘着フィルムまたはシートの製造方法において、前記光
重合ゾーンは第１ゾーンと第２ゾーンとからなり、前記
フィルム状基材が最初に光重合ゾーンに入る第１ゾーン
の雰囲気酸素濃度を１１０００ｐｐ以下に保った光重合
室となし、且つ、前記フィルム状基材が前記第１ゾーン
を通過するに要する時間を１秒以上とし、第２ゾーンで
は光透過性フィルムを感光性組成物の上に積層させて通
過させるのである。
本発明に使用するフィルム状基材とは、従来、粘着テー
プ、フィルム、あるいはシートに使用されている基材の
すべてを含むものである。例えば、ポリ塩化ビニルフィ
ルム、ポリエステルフィルム、ポリエチレンフィルム、
ポリプロピレンフィルム等の合成樹脂フィルムやクラフ
ト紙のような紙製品やセロファン等が好適に使用される
。
本発明において、感光性組成物とは、七ツマ−と光重合
開始剤からなるものであって、光を照射することにより
、重合して粘着剤となるものをいう。これらの感光性組
成物は、従来、多くのものが知られている。例えば、ア
クリル系、ポリエステル系、エポキシ系等多くの感光性
組成物が知られている。本発明では、これら公知の感光
性組成物のすべてが使用可能である。特に、アクリル系
感光性組成物が好適である。
本発明において、光とは、可視光線、紫外線、電子線等
の電磁波を総称する。
本発明に使用する光重合ゾーンは第１ゾーンと第２ゾー
ンとからなる。
本発明において、光透過性フィルムとは上記紫外線や電
子線等の光を透過するものであって、この光透過性フィ
ルムの材質は使用する光の種類によって異なる。例えば
、光が可視光線であれば、ポリエステル（テトロン）フ
ィルム、ポリエチレンフィルム、ポリ塩化ビニルフィル
ム等の透明なフィルムが使用できる。又、光が紫外線で
あれば、波長が３００ｎｍ〜４００ｎｍの光を透過する
ものが好適に使用される。かかるフィルムとしては、ポ
リエチレンフィルム、ポリプロピレンフィルム、ポリテ
トラフルオロエチレン（テフロン）フィルム、ポリエス
テルフィルム等がある。又、電子線であれば、殆どの合
成樹脂フィルムが使用できる。
これらのフィルム厚は、破れなければ、薄い稈元の吸収
が少なくてよい。上記フィルムの中で、ポリエステルフ
ィルムが薄く機械的強度が大であるから、最も好適に使
用できる。
本発明における第１ゾーンは雰囲気酸素濃度を１１００
０ｐｐとした光重合室であり、且つ、この光重合室をフ
ィルム状基材が通過する時間を１秒以上としたのである
。
この第１ゾーンである光重合室の雰囲気酸素濃度を１１
０００ｐｐ以下にするには、この光重合室に直接Ｎ、ガ
スの如き不活性ガスを吹き込むことで達成でききる。
第２ゾーンでは、第１ゾーンと第２ゾーンとの間から光
を透過するフィルムを挿入し、感光性組成物層の上にこ
のフィルムを積層して、第２ゾーンを通過させる。
本発明においては、フィルム状基材がこの第１ゾーンと
第２ゾーンの中を通過している間に、この感光性組成物
層に紫外線等の光を照射さし、感光性組成物を重合させ
るのである。
本発明で第１ゾーンの雰囲気酸素濃度を１１０００ｐｐ
以下とし、通過時間を１秒以上にしたが、その理由は、
もし、この雰囲気酸素濃度が１１０００ｐｐ以上であれ
ば、感光性粘着剤中の溶存酸素濃度が０．ｌｐｐｍ以上
となり感光性粘着剤の重合が阻止されて粘着剤に必要な
分子量まで重合しないからであり、又、この第１ゾーン
を通過する時間が１秒以下であれば、重合が不完全にな
るからである。尚、この通過時間が長過ぎると、時間当
たりの製造量が下がるので、通過時間を１０秒以下にす
るのが好ましい。The present invention has been made to solve the above problems and achieve the above objects, and after providing a photosensitive composition layer on the surface of a film-like base material, the film is passed through a photopolymerization zone while being irradiated with light. , in the method for producing an adhesive film or sheet, in which the photosensitive composition is polymerized on a film-like substrate, the photopolymerization zone consists of a first zone and a second zone, and the film-like substrate first enters the photopolymerization zone. The photopolymerization chamber is configured such that the atmospheric oxygen concentration in the first zone into which it enters is maintained at 11,000 pp or less, and the time required for the film-like substrate to pass through the first zone is set to be 1 second or more, and in the second zone, the A transparent film is laminated on top of the photosensitive composition and allowed to pass through. The film-like base material used in the present invention includes all base materials conventionally used for adhesive tapes, films, or sheets. For example, polyvinyl chloride film, polyester film, polyethylene film,
Synthetic resin films such as polypropylene films, paper products such as kraft paper, cellophane, etc. are preferably used. In the present invention, the photosensitive composition is composed of a 7-mer and a photopolymerization initiator, and is polymerized to become an adhesive when irradiated with light. Many of these photosensitive compositions are conventionally known. For example, many photosensitive compositions such as acrylic, polyester, and epoxy are known. In the present invention, all of these known photosensitive compositions can be used. In particular, acrylic photosensitive compositions are suitable. In the present invention, light generally refers to electromagnetic waves such as visible light, ultraviolet rays, and electron beams. The photopolymerization zone used in the present invention consists of a first zone and a second zone. In the present invention, the light-transmitting film is one that transmits light such as the ultraviolet rays and electron beams, and the material of the light-transmitting film varies depending on the type of light used. For example, if the light is visible light, transparent films such as polyester (Tetron) film, polyethylene film, and polyvinyl chloride film can be used. Furthermore, if the light is ultraviolet rays, one that transmits light having a wavelength of 300 nm to 400 nm is preferably used. Such films include polyethylene films, polypropylene films, polytetrafluoroethylene (Teflon) films, polyester films, and the like. Moreover, if it is an electron beam, most synthetic resin films can be used. These film thicknesses may require less absorption of thin culms if they do not tear. Among the above films, polyester film is thin and has high mechanical strength, so it can be used most preferably. The first zone in the present invention has an atmospheric oxygen concentration of 1100
The photopolymerization chamber was set to 0pp, and the time during which the film-like base material passed through this photopolymerization chamber was set to 1 second or more. The atmospheric oxygen concentration in the photopolymerization chamber, which is the first zone, was set to 11
000 pp or less can be achieved by directly blowing an inert gas such as N or gas into the photopolymerization chamber. In the second zone, a film that transmits light is inserted between the first zone and the second zone, this film is laminated on the photosensitive composition layer, and the light passes through the second zone. In the present invention, while the film-like substrate is passing through the first zone and the second zone, the photosensitive composition layer is irradiated with light such as ultraviolet rays to polymerize the photosensitive composition. Let it happen. In the present invention, the atmospheric oxygen concentration in the first zone is set to 11,000 pp.
The reason for this is as follows, and the passing time is set to 1 second or more.
If the atmospheric oxygen concentration is 11,000 pp or more, the dissolved oxygen concentration in the photosensitive adhesive is 0. This is because polymerization of the photosensitive adhesive is inhibited when the molecular weight exceeds 1 ppm, and the polymerization does not reach the molecular weight required for the adhesive.Also, if the time to pass through this first zone is less than 1 second, polymerization will be incomplete. It is from. Note that if this passing time is too long, the production amount per hour will decrease, so it is preferable to keep the passing time to 10 seconds or less.
本発明においては、第１ゾーンである光重合室の雰囲気
の酸素濃度を１１０００ｐｐ以下にしたから、感光性組
成物の中の溶存酸素濃度が０． ｌｐｐｍ以下となり
、光を照射して重合させるときの障害にならない。
又、フィルム状基材がこの第１ゾーンの中を通過する時
間が１秒以上であるから、重合が進み、その後、第２ゾ
ーンでは、光透過性フィルムを感光性組成物層に積層し
であるから、このフィルム周辺から酸素を吸収しても、
重合に支障がない。
即ち、本発明者等がこの光重合反応を研究した結果、最
初の重合開始時には感光性組成物中の溶存酸素濃度がＯ
，ｌｐｐｍ以下でないと、重合がスムーズに開始しない
ことが判明した。更に研究を重ねた結果、重合初期の雰
囲気酸素濃度を１１０００ｐｐ以下に保って、感光性組
成物に光を照射することにより、感光性組成物中に溶存
する酸素が光重合開始剤に消費され減少して０．ＩＰＰ
ｍ以下になって、重合が進行する。そして、１秒以上経
過し、この感光性組成物の中のモノマーがある程度重合
すると、感光性組成物への酸素の溶度が減少するから、
単に、この感光性組成物層の上に光を透過するフィルム
を積層するだけで、若干周辺から酸素が吸収されても、
重合に必要な溶存酸素濃度を維持でき、重合に支障がな
いことが判明した。
又、本発明の第２ゾーンでは光透過性フィルムで積層さ
れているから、感光性組成物の中のモノマーの蒸発が押
さえられ、組成の変化が少なくなる。尚、このフィルム
を、最初から積層すると、感光性組成物層に接着して剥
離が困難になるが、第１ゾーンで成る程度重合した後に
積層するから、剥離が容易である。In the present invention, since the oxygen concentration in the atmosphere of the photopolymerization chamber, which is the first zone, is set to 11,000 pp or less, the dissolved oxygen concentration in the photosensitive composition is 0. It is less than lppm and does not become an obstacle when polymerizing by irradiating light. Moreover, since the time for the film-like substrate to pass through the first zone is 1 second or more, polymerization proceeds, and then in the second zone, a light-transmitting film is laminated on the photosensitive composition layer. Therefore, even if oxygen is absorbed from around this film,
There is no problem with polymerization. That is, as a result of research by the present inventors on this photopolymerization reaction, the dissolved oxygen concentration in the photosensitive composition is O at the time of initial polymerization initiation.
, lppm or less, polymerization does not start smoothly. As a result of further research, by keeping the atmospheric oxygen concentration at the initial stage of polymerization below 11,000 pp and irradiating the photosensitive composition with light, the oxygen dissolved in the photosensitive composition was consumed by the photopolymerization initiator and decreased. Then 0. IPP
m or less, polymerization proceeds. Then, when more than 1 second passes and the monomer in this photosensitive composition polymerizes to some extent, the solubility of oxygen in the photosensitive composition decreases.
By simply laminating a light-transmitting film on top of this photosensitive composition layer, even if some oxygen is absorbed from the surrounding area,
It was found that the dissolved oxygen concentration required for polymerization could be maintained and there was no problem with polymerization. Furthermore, since the second zone of the present invention is laminated with a light-transmitting film, evaporation of the monomer in the photosensitive composition is suppressed, and changes in the composition are reduced. Incidentally, if this film is laminated from the beginning, it will adhere to the photosensitive composition layer and peeling will be difficult, but since it is laminated after polymerization to the extent that it forms in the first zone, peeling is easy.
以下、図面を参照しながら、本発明の詳細な説明する。
第１図は、本発明の一実施態様を判り易く示した説明図
である。
図において、１はロール状に巻いたフィルム状基材、１
１はこのロール状に巻いたフィルム１を巻き戻したフィ
ルム状基材である。
２は製品巻取り装置、３は感光性組成物塗布装置である
。
４は光重合ゾーンであり、第１ゾーン４１と第２ゾーン
４２とからなる。
この第１ゾーン４１は、図示されてないＮ２ガス導入口
からＮ２ガスを導入し、雰囲気酸素濃度を１１０００ｐ
ｐ以下に保つようになっている。
又、第１ゾーン４１と第２ゾーン４２との境から光透過
性フィルム４３を挿入し、感光性組成物層３１の上に積
層する。
５は光照射装置である。
次に、この装置を使用して粘着フィルムの製造方法およ
びその際の作用について説明する。
ロール状に巻いであるフィルム状基材１からフィルム状
基材１１を巻き戻し、感光性組成物塗布装置３に導入す
る。この装置３でフィルム状基材１１の表面に感光性組
成物を塗布して、フィルム状基材１１の上に感光性組成
物層３１を設ける。
この感光性組成物層３１の設けられたフィルム状基材１
１を光重合ゾーン４に導く。
このフィルム状基材１１は最初第１ゾーン４１の中を通
り、次に第２ゾーン４２を通った後、これらの光重合室
から出て行く。
この第１ゾーン４１の雰囲気酸素濃度は１１０００ｐｐ
以下に保たれた光重合室であり、この第１ゾーン４１を
通過している間に光照射装置５から紫外線が照射され、
感光性組成物がある程度重合する。第２ゾーン４２では
光透過性フィルム４３が感光性組成物層の上に積層され
ていて、その上から光が照射され、重合が完結し、粘着
剤となる。
このように、第１ゾーンでは雰囲気酸素濃度を１１００
０ｐｐ以下に保った重合室で重合するから、重合開始が
スムーズに行われる。
又、第２ゾーンでは、フィルムが感光性組成物層に積層
されているから、感光性粘着剤層３１には直接雰囲気が
接することなく、周辺の酸素を吸収して若干増加するも
のの、第１ゾーンを出たときの溶存酸素濃度がほぼ変わ
ら、そのまま通過する。。従って、重合反応は支障なく
進行する。
又、このように、フィルム４３が感光性組成物に積層さ
れているから、感光性組成物中のモノマーの蒸発が押さ
えられ、組成の変化が少ない。
又、このフィルムは重合の初期の段階から積層されてい
なく、第２ゾーンに入る直前に積層されるから、重合が
完結した後に、フィルムを剥離することが容易である。Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram showing an embodiment of the present invention in an easy-to-understand manner. In the figure, 1 is a film-like base material wound into a roll; 1
1 is a film-like base material obtained by unwinding the film 1 wound into a roll. 2 is a product winding device, and 3 is a photosensitive composition coating device. 4 is a photopolymerization zone, which consists of a first zone 41 and a second zone 42. In this first zone 41, N2 gas is introduced from an N2 gas inlet (not shown), and the atmospheric oxygen concentration is adjusted to 11,000p.
It is designed to be kept below p. Further, a light-transmitting film 43 is inserted from the boundary between the first zone 41 and the second zone 42 and laminated on the photosensitive composition layer 31. 5 is a light irradiation device. Next, a method for producing an adhesive film using this apparatus and its operation will be explained. A film base material 11 is unwound from a film base material 1 wound into a roll and introduced into a photosensitive composition coating device 3. This apparatus 3 applies a photosensitive composition to the surface of the film-like base material 11 to provide a photosensitive composition layer 31 on the film-like base material 11 . Film-like base material 1 provided with this photosensitive composition layer 31
1 to the photopolymerization zone 4. This film-like substrate 11 first passes through a first zone 41 and then a second zone 42 before leaving these photopolymerization chambers. The atmospheric oxygen concentration in this first zone 41 is 11000pp.
It is a photopolymerization chamber maintained at the following temperature, and while passing through this first zone 41, ultraviolet rays are irradiated from the light irradiation device 5,
The photosensitive composition polymerizes to some extent. In the second zone 42, a light-transmitting film 43 is laminated on the photosensitive composition layer, and light is irradiated from above to complete polymerization and form an adhesive. In this way, in the first zone, the atmospheric oxygen concentration is set to 1100.
Since polymerization is carried out in a polymerization chamber maintained at 0 pp or less, polymerization starts smoothly. In addition, in the second zone, since the film is laminated on the photosensitive composition layer, the atmosphere does not come into direct contact with the photosensitive adhesive layer 31, and although it absorbs surrounding oxygen and increases slightly, the first zone The dissolved oxygen concentration when leaving the zone is almost unchanged, and it passes through the zone as it is. . Therefore, the polymerization reaction proceeds without any problem. Furthermore, since the film 43 is laminated on the photosensitive composition in this way, evaporation of monomers in the photosensitive composition is suppressed, and changes in the composition are small. Further, since this film is not laminated from the initial stage of polymerization and is laminated just before entering the second zone, it is easy to peel off the film after polymerization is completed.
本発明は光重合ゾーンを第１ゾーンと第２ゾーンとに分
け、フィルム状基材が最初に導入される第１ゾーンであ
る光重合室の雰囲気酸素濃度を１１０００ｐｐ以下にし
、第２ゾーンでは感光性組成物層の上を光を透過するフ
ィルムで積層しているだけで重合が支障なく完結するの
で極めて便利である。
又、このように、本発明では第１ゾーンのみにＮ２ガス
を導入すればよいから、従来のように光重合室全体にＮ
２ガスを導入するよりＮ２ガスの使用量が少なくなる。
又、このように、第２ゾーンでは光透過性フィルムで積
層するから、感光性組成物の組成の変化が少なくなり、
良好な粘着剤が製造出来る。
又、このフィルムは重合途中の第２ゾーンに入る前に積
層するから、重合完結後にフィルムの剥離が簡単である
。In the present invention, the photopolymerization zone is divided into a first zone and a second zone. This method is extremely convenient because the polymerization can be completed without any trouble simply by laminating a light-transmitting film on top of the transparent composition layer. In addition, in this way, in the present invention, it is only necessary to introduce N2 gas into the first zone, so unlike the conventional method, N2 gas is introduced into the entire photopolymerization chamber.
The amount of N2 gas used is smaller than when two gases are introduced. In addition, since the second zone is laminated with a light-transmitting film, changes in the composition of the photosensitive composition are reduced,
A good adhesive can be produced. Moreover, since this film is laminated before entering the second zone during polymerization, it is easy to peel off the film after polymerization is completed.
第１図は本発明の一実施態様の説明図である。
１１−・−・・・・−・フィルム状基材３１−−−−−
−−−−一感光性粘着剤層４−・−一一−−−−−−−
−−−光重合ゾーン４１−・−・第１ゾーン
４２−−−−−−一第２ゾーン
４３−−−−−−一光透過性フィルムFIG. 1 is an explanatory diagram of one embodiment of the present invention. 11--...Film-like base material 31--
----1 Photosensitive adhesive layer 4--11--------
---Photopolymerization zone 41--First zone 42--Second zone 43--One light-transmitting film
Claims (1)
後、光を照射しながら、光重合ゾーンを通過させ、前記
感光性組成物をフィルム状基材上で重合させる粘着フィ
ルムまたはシートの製造方法において、前記光重合ゾー
ンは第１ゾーンと第２ゾーンとからなり、前記フィルム
状基材が最初に光重合ゾーンに入る第１ゾーンの雰囲気
酸素濃度を１０００ｐｐｍ以下に保った光重合室となし
、且つ、前記フィルム状基材が前記第１ゾーンを通過す
るに要する時間を１秒以上とし、第２ゾーンでは光透過
性フィルムを感光性組成物の上に積層させて通過させる
ことを特徴とする粘着フィルムまたはシートの製造方法
。(1) An adhesive film in which a photosensitive composition layer is provided on the surface of a film-like base material, and then the photosensitive composition is polymerized on the film-like base material by passing through a photopolymerization zone while irradiating the film with light. In the sheet manufacturing method, the photopolymerization zone consists of a first zone and a second zone, and the photopolymerization is carried out in which the atmospheric oxygen concentration in the first zone where the film-like substrate first enters the photopolymerization zone is maintained at 1000 ppm or less. and the time required for the film-like substrate to pass through the first zone is 1 second or more, and in the second zone, a light-transmitting film is laminated on top of the photosensitive composition and passed through. A method for producing an adhesive film or sheet characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8624890A JPH03285974A (en) | 1990-03-31 | 1990-03-31 | Production of tacky film or sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8624890A JPH03285974A (en) | 1990-03-31 | 1990-03-31 | Production of tacky film or sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03285974A true JPH03285974A (en) | 1991-12-17 |
Family
ID=13881516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8624890A Pending JPH03285974A (en) | 1990-03-31 | 1990-03-31 | Production of tacky film or sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03285974A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2543710A1 (en) | 2011-07-08 | 2013-01-09 | Nitto Denko Corporation | Method and apparatus for producing pressure-sensitive adhesive sheet |
| EP2568025A1 (en) | 2011-09-12 | 2013-03-13 | Nitto Denko Corporation | Method and apparatus for producing a film coated with photo-reactivelayers |
| EP2711401A1 (en) | 2012-09-24 | 2014-03-26 | Nitto Denko Corporation | Method and apparatus for producing photoreaction product sheet |
| EP2737986A1 (en) | 2012-11-29 | 2014-06-04 | Nitto Denko Corporation | Production method of photoreaction product sheet and apparatus for the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0260981A (en) * | 1988-08-29 | 1990-03-01 | Sekisui Chem Co Ltd | Production of acrylic pressure-sensitive tape or sheet |
-
1990
- 1990-03-31 JP JP8624890A patent/JPH03285974A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0260981A (en) * | 1988-08-29 | 1990-03-01 | Sekisui Chem Co Ltd | Production of acrylic pressure-sensitive tape or sheet |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2543710A1 (en) | 2011-07-08 | 2013-01-09 | Nitto Denko Corporation | Method and apparatus for producing pressure-sensitive adhesive sheet |
| EP2568025A1 (en) | 2011-09-12 | 2013-03-13 | Nitto Denko Corporation | Method and apparatus for producing a film coated with photo-reactivelayers |
| EP2711401A1 (en) | 2012-09-24 | 2014-03-26 | Nitto Denko Corporation | Method and apparatus for producing photoreaction product sheet |
| EP2737986A1 (en) | 2012-11-29 | 2014-06-04 | Nitto Denko Corporation | Production method of photoreaction product sheet and apparatus for the same |
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