JP2011148856A - Double-sided self-adhesive tape and method and apparatus for producing double-sided self-adhesive tape - Google Patents
Double-sided self-adhesive tape and method and apparatus for producing double-sided self-adhesive tape Download PDFInfo
- Publication number
- JP2011148856A JP2011148856A JP2010009058A JP2010009058A JP2011148856A JP 2011148856 A JP2011148856 A JP 2011148856A JP 2010009058 A JP2010009058 A JP 2010009058A JP 2010009058 A JP2010009058 A JP 2010009058A JP 2011148856 A JP2011148856 A JP 2011148856A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- adhesive layer
- pressure
- sensitive adhesive
- double
- 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
Abstract
Description
本発明は、基材レスで表裏両面に粘着面を有する両面粘着テープ、両面粘着テープの製造方法及び製造装置に関するものである。 The present invention relates to a double-sided pressure-sensitive adhesive tape having a substrate-less adhesive surface on both front and back surfaces, a method for manufacturing a double-sided pressure-sensitive adhesive tape, and a manufacturing apparatus.
従来、光反応開始剤を含有する接着層の両面にプラスチックフィルムを積層した積層物（両面接着テープ）が知られている。
この両面接着テープは、接着層を一方のプラスチックフィルムに塗布し、これに他方のプラスチックフィルムを貼合わせた後に、プラスチックフィルム越しに紫外線、電子線の照射により接着層を硬化させることで形成されている（特許文献１参照）。
Conventionally, a laminate (double-sided adhesive tape) in which a plastic film is laminated on both sides of an adhesive layer containing a photoreaction initiator is known.
This double-sided adhesive tape is formed by applying an adhesive layer to one plastic film, pasting the other plastic film on it, and then curing the adhesive layer by irradiation of ultraviolet rays and electron beams through the plastic film. (See Patent Document 1).
しかしながら、上記従来の両面接着シートは、プラスチックフィルム越しに紫外線等を照射して接着層を硬化しているため、プラスチックフィルム表面で乱反射したり、フィルム透過後の活性エネルギーが減退することによって、硬化速度が遅くなり生産効率が悪い。
本発明は、このような点に鑑みて、粘着層の表裏粘着面の両方が第１シート及び第２シートを貼り付ける前に露出した状態でそれぞれ直接の光照射によって硬化されることで、粘着層の硬化速度が上がり、生産性を向上できる両面粘着テープを提供することを目的とする。
However, the above conventional double-sided adhesive sheet is cured by irradiating ultraviolet rays through the plastic film and curing the adhesive layer, so that it diffuses on the surface of the plastic film or the active energy after passing through the film decreases. The speed is slow and production efficiency is poor.
In view of such a point, the present invention is cured by direct light irradiation in a state where both of the front and back adhesive surfaces of the adhesive layer are exposed before the first sheet and the second sheet are attached. An object of the present invention is to provide a double-sided pressure-sensitive adhesive tape capable of increasing the curing speed of the layer and improving the productivity.
また、本発明は、光反応性組成物を第１シートに塗布して形成された粘着層の表面に第２シートが貼り付けられ、第２シートが貼り付いた粘着層の裏面を第１シートを剥がして露出した後に直接の光照射によって硬化することで、粘着層の表面だけでなく、第１シートに覆われた粘着層の裏面にも光を直接照射することが可能となって粘着層の硬化速度が上がり、生産性を向上させる両面粘着テープの製造方法を提供することを目的とする。 In addition, the present invention is such that the second sheet is attached to the surface of the adhesive layer formed by applying the photoreactive composition to the first sheet, and the back surface of the adhesive layer to which the second sheet is attached is the first sheet. It is possible to directly irradiate light not only on the surface of the adhesive layer but also on the back surface of the adhesive layer covered with the first sheet by curing by direct light irradiation after peeling and exposing An object of the present invention is to provide a method for producing a double-sided pressure-sensitive adhesive tape that increases the curing speed of the adhesive and improves the productivity.
さらに、本発明は、搬送される第１シートに光反応性組成物を塗布して粘着層を形成する塗布手段と、表面に第２シートが貼り付けられた粘着層から剥離手段によって第１シートを剥がして露出した裏面を直接の光照射によって硬化させる裏光照射手段とを有することで、粘着層の表面及び裏面の両方に光を直接照射することができ、硬化効率を上げて生産性の向上を図る両面粘着テープの製造装置を提供することを目的とする。 Furthermore, the present invention provides an application means for forming a pressure-sensitive adhesive layer by applying a photoreactive composition to a conveyed first sheet, and a first sheet by a peeling means from the pressure-sensitive adhesive layer having a second sheet attached to the surface. By having a back light irradiation means that cures the exposed back surface by direct light irradiation, both the front and back surfaces of the adhesive layer can be directly irradiated with light, increasing the curing efficiency and improving productivity. It aims at providing the manufacturing apparatus of the double-sided adhesive tape which aims at improvement.
前記課題を達成するために、本発明に係る両面粘着テープは、以下の技術的手段を採用した。
光反応性組成物Ｈで形成された粘着層２の表裏粘着面２ａ、２ｂに、第１シート３とこの第１シート３より前記粘着層２から剥がれにくい第２シート４とを貼り付けた両面粘着テープであって、
前記粘着層２の表裏粘着面２ａ、２ｂはともに、前記第１シート３及び第２シート４を貼り付ける前に露出した状態でそれぞれ直接の光照射によって硬化されていることを特徴とする。
In order to achieve the above object, the double-sided pressure-sensitive adhesive tape according to the present invention employs the following technical means.
Both surfaces where the first sheet 3 and the second sheet 4 that is less likely to peel from the adhesive layer 2 than the first sheet 3 are attached to the front and back adhesive surfaces 2a and 2b of the adhesive layer 2 formed of the photoreactive composition H. An adhesive tape,
Both the front and back adhesive surfaces 2a, 2b of the adhesive layer 2 are cured by direct light irradiation in a state where they are exposed before the first sheet 3 and the second sheet 4 are attached.
本発明に係る両面粘着テープの製造方法は、第１に、粘着層２の表裏に粘着面２ａ、２ｂを有する両面粘着テープの製造方法であって、
光反応性組成物Ｈを第１シート３に塗布して前記粘着層２を形成し、
前記粘着層２の露出している表面２ａを直接の光照射によって硬化した後に、前記第１シート３より粘着層２から剥がれにくい第２シート４を前記粘着層２の表面２ａに貼り付け、
前記第２シート４が貼り付けられた粘着層２の裏面２ｂから第１シート３を一旦剥がして前記粘着層２の裏面２ｂを露出させ、前記粘着層２の露出している裏面２ｂを直接の光照射によって硬化した後に、前記粘着層２の裏面２ｂに一旦剥がした前記第１シート３を再び貼り付けることを特徴とする。
The method for producing a double-sided pressure-sensitive adhesive tape according to the present invention is firstly a method for producing a double-sided pressure-sensitive adhesive tape having adhesive surfaces 2a and 2b on the front and back of the adhesive layer 2,
The photoreactive composition H is applied to the first sheet 3 to form the adhesive layer 2;
After the exposed surface 2a of the pressure-sensitive adhesive layer 2 is cured by direct light irradiation, a second sheet 4 that is less likely to peel from the pressure-sensitive adhesive layer 2 than the first sheet 3 is attached to the surface 2a of the pressure-sensitive adhesive layer 2,
The first sheet 3 is once peeled off from the back surface 2b of the adhesive layer 2 to which the second sheet 4 is attached to expose the back surface 2b of the adhesive layer 2, and the exposed back surface 2b of the adhesive layer 2 is directly exposed. After curing by light irradiation, the first sheet 3 once peeled off to the back surface 2b of the adhesive layer 2 is pasted again.
第２に、前記光反応性組成物Ｈは光反応性ポリマーであって、
この光反応性ポリマーをホットメルト状態で第１シート３の上面に塗布し、前記粘着層２の上方から光を直接照射していることを特徴とする。
本発明に係る両面粘着テープの製造装置は、第１に、粘着層２の表裏に粘着面２ａ、２ｂを有する両面粘着テープの製造装置であって、
第１シート３を搬送する第１シート搬送手段５と、
搬送される前記第１シート３に光反応性組成物Ｈを塗布して前記粘着層２を形成する塗布手段６と、
前記粘着層２の露出している表面２ａを直接の光照射によって硬化させる表光照射手段７と、
硬化された前記粘着層２の表面２ａに第１シート３より粘着層２から剥がれにくい第２シート４を貼り付ける表貼付手段８と、
前記第２シート４が貼り付けられた粘着層２から第１シート３を一旦剥がして裏面２ｂを露出させる剥離手段９と、
前記粘着層２の露出している裏面２ｂを直接の光照射によって硬化させる裏光照射手段１０と、
硬化された前記粘着層２の裏面２ｂに一旦剥がした前記第１シート３を再び貼り付ける裏貼付手段１１とを有していることを特徴とする。
Second, the photoreactive composition H is a photoreactive polymer,
The photoreactive polymer is applied to the upper surface of the first sheet 3 in a hot melt state, and light is directly irradiated from above the adhesive layer 2.
The double-sided pressure-sensitive adhesive tape manufacturing apparatus according to the present invention is firstly a double-sided pressure-sensitive adhesive tape manufacturing apparatus having adhesive surfaces 2a and 2b on the front and back of the adhesive layer 2,
A first sheet conveying means 5 for conveying the first sheet 3;
Application means 6 for applying the photoreactive composition H to the conveyed first sheet 3 to form the adhesive layer 2;
Surface light irradiation means 7 for curing the exposed surface 2a of the adhesive layer 2 by direct light irradiation;
A surface pasting means 8 for affixing the second sheet 4 that is less likely to be peeled off from the adhesive layer 2 than the first sheet 3 to the cured surface 2a of the adhesive layer 2;
Peeling means 9 for once peeling off the first sheet 3 from the pressure-sensitive adhesive layer 2 to which the second sheet 4 has been attached to expose the back surface 2b;
Back light irradiation means 10 for curing the exposed back surface 2b of the adhesive layer 2 by direct light irradiation;
It has the back sticking means 11 which sticks the said 1st sheet | seat 3 once peeled to the back surface 2b of the said adhesion layer 2 which hardened | cured, It is characterized by the above-mentioned.
第２に、前記光反応性組成物Ｈは光反応性ポリマーであって、
前記塗布手段６は、前記光反応性ポリマーをホットメルト状態で第１シート３上面に塗布可能に構成され、
前記表光照射手段７は第１シート３上面の上方から光を直接照射可能に配置されていることを特徴とする。
Second, the photoreactive composition H is a photoreactive polymer,
The application means 6 is configured to be able to apply the photoreactive polymer to the upper surface of the first sheet 3 in a hot melt state.
The surface light irradiation means 7 is arranged so that light can be directly irradiated from above the upper surface of the first sheet 3.
これらの特徴により、粘着層２の表裏粘着面２ａ、２ｂがともに第１シート３及び第２シート４を貼り付ける前に露出した状態でそれぞれ直接の光照射によって硬化されていることで、粘着層２の表裏両面２ａ、２ｂに対して光を直接照射することで、光反応性組成物Ｈを十分に反応させることが可能となり、照射効率が上がると同時に反応による硬化速度も向上する。 Due to these characteristics, both the front and back adhesive surfaces 2a and 2b of the adhesive layer 2 are cured by direct light irradiation in a state where they are exposed before the first sheet 3 and the second sheet 4 are attached, respectively. By directly irradiating the front and back surfaces 2a and 2b of 2 with light, the photoreactive composition H can be sufficiently reacted, and the irradiation efficiency is increased and at the same time the curing rate by the reaction is improved.
また、光反応性組成物Ｈを第１シート３に塗布して形成された粘着層２の表面２ａに第２シート４を貼り付け、第２シート４が貼り付けられた粘着層２の裏面２ｂを第１シート３を剥がして露出した後に直接の光照射によって硬化することで、粘着層２の表面２ａだけでなく、裏面２ｂに対しても直接光を照射することが可能となって、光反応性組成物Ｈを十分に反応させて硬化速度及び生産性を向上させる。 Moreover, the 2nd sheet | seat 4 is affixed on the surface 2a of the adhesion layer 2 formed by apply | coating the photoreactive composition H to the 1st sheet | seat 3, and the back surface 2b of the adhesion layer 2 to which the 2nd sheet | seat 4 was affixed. After the first sheet 3 is peeled and exposed, it is cured by direct light irradiation, so that not only the front surface 2a of the adhesive layer 2 but also the back surface 2b can be directly irradiated with light. The reactive composition H is sufficiently reacted to improve the curing rate and productivity.
さらに、光反応性組成物Ｈとして光反応性ポリマーをホットメルト状態で第１シート３の上面に塗布することで、塗布した光反応性組成物Ｈを第１シート３上にのせて搬送することが可能となり、粘着層２の上方から光を直接照射することで、粘着層２が第１シート３上面の上方に位置した状態で粘着層２の表面２ａに対して光を直接照射できるため、塗布形成した粘着層２の表面２ａが硬化する前に変形することを防ぐことが可能となる。 Furthermore, the photoreactive composition H is applied to the upper surface of the first sheet 3 in a hot melt state as the photoreactive composition H, and the applied photoreactive composition H is carried on the first sheet 3 and conveyed. It is possible to directly irradiate light on the surface 2a of the adhesive layer 2 with the adhesive layer 2 positioned above the upper surface of the first sheet 3 by directly irradiating light from above the adhesive layer 2. It is possible to prevent the coated surface 2a of the adhesive layer 2 from being deformed before being cured.
そして、塗布手段６によって光反応性組成物Ｈを第１シート３に塗布して形成された粘着層２の表面２ａに表貼付手段８で第２シート４を貼り付け、第２シート４が貼り付けられた粘着層２の裏面２ｂを剥離手段９によって第１シート３を剥がして露出した後に、裏光照射手段１０によって直接の光照射によって硬化することで、粘着層２の表裏両面２ａ、２ｂを光を直接照射することができ、粘着層２の硬化速度及び生産性を上げることができる。 And the 2nd sheet | seat 4 is affixed on the surface 2a of the adhesion layer 2 formed by apply | coating the photoreactive composition H to the 1st sheet | seat 3 with the application | coating means 6, and the 2nd sheet | seat 4 is affixed. The back surface 2b of the attached adhesive layer 2 is exposed by peeling the first sheet 3 by the peeling means 9, and then cured by direct light irradiation by the back light irradiating means 10, whereby the front and back surfaces 2a, 2b of the adhesive layer 2 are cured. Can be directly irradiated with light, and the curing speed and productivity of the pressure-sensitive adhesive layer 2 can be increased.
また、光反応性組成物Ｈとして光反応性ポリマーをホットメルト状態で第１シート３上面に塗布可能に塗布手段６を構成することで、光反応性組成物Ｈを第１シート３上にのせて搬送でき、表光照射手段７を第１シート３上面の上方から光を直接照射可能に配置することで、粘着層２が第１シート３上面の上方に位置した状態で粘着層２の表面２ａを直接の光照射で硬化可能となるため、塗布形成した粘着層２が硬化前に変形することを抑えることができる。 Further, the photoreactive composition H is placed on the first sheet 3 by configuring the application means 6 so that the photoreactive polymer can be applied as the photoreactive composition H to the upper surface of the first sheet 3 in a hot melt state. The surface of the pressure-sensitive adhesive layer 2 in a state where the pressure-sensitive adhesive layer 2 is positioned above the upper surface of the first sheet 3 by arranging the surface light irradiation means 7 so that light can be directly irradiated from above the upper surface of the first sheet 3. Since 2a can be cured by direct light irradiation, it is possible to suppress deformation of the coated adhesive layer 2 before curing.
本発明に係る両面粘着テープによると、粘着層の表裏粘着面の両方が各シートを貼り付ける前に露出した状態で直接の光照射によって硬化されることで、粘着層の硬化速度及び生産性を向上できる。
本発明に係る両面粘着テープの製造方法によると、光反応性組成物を第１シートに塗布して形成された粘着層の表面に第２シートを貼り付け、その粘着層の裏面を第１シートを剥がして露出した後に直接の光照射によって硬化することで、粘着層の表面だけでなく、第１シートに覆われた粘着層の裏面にも光を直接照射することが可能となって、硬化速度と生産性とを上げる。
According to the double-sided pressure-sensitive adhesive tape according to the present invention, both the front and back pressure-sensitive adhesive surfaces of the pressure-sensitive adhesive layer are cured by direct light irradiation in a state of being exposed before pasting each sheet, thereby improving the curing speed and productivity of the pressure-sensitive adhesive layer. It can be improved.
According to the method for producing a double-sided pressure-sensitive adhesive tape according to the present invention, the second sheet is attached to the surface of the pressure-sensitive adhesive layer formed by applying the photoreactive composition to the first sheet, and the back surface of the pressure-sensitive adhesive layer is the first sheet. It is possible to directly irradiate light not only on the surface of the adhesive layer but also on the back surface of the adhesive layer covered with the first sheet, by curing by peeling off and exposing to direct light irradiation. Increase speed and productivity.
本発明に係る両面粘着テープの製造装置によると、第１シートに光反応性組成物を塗布して粘着層を形成する塗布手段と、第２シートが貼り付けられた粘着層から剥離手段によって第１シートを剥がし、露出した裏面を直接の光照射によって硬化させる裏光照射手段とを有することで、粘着層の表面及び裏面の両方に光を直接照射することができ、粘着層の硬化効率を上げて生産性の向上を図れる。 According to the apparatus for producing a double-sided pressure-sensitive adhesive tape according to the present invention, a coating means for forming a pressure-sensitive adhesive layer by applying a photoreactive composition to the first sheet, and a peeling means from the pressure-sensitive adhesive layer to which the second sheet is attached By having a back light irradiating means that peels one sheet and cures the exposed back surface by direct light irradiation, both the front and back surfaces of the adhesive layer can be directly irradiated with light, and the curing efficiency of the adhesive layer can be improved. To improve productivity.
以下、本発明の実施の形態を図面を参照して説明する。
図１、２には、本発明に係る両面粘着テープの製造装置１が示されている。
この両面粘着テープの製造装置１は、表裏に粘着面２ａ、２ｂを有した粘着層２を剥離シート３、４で覆った両面粘着テープＴを製造するものである。
図２に示すように、両面粘着テープＴは、帯状であって、光反応性組成物Ｈで構成された粘着層２と、この粘着層２の表面２ａを覆う帯状の重剥離シート（第２シート）４と、裏面２ｂを覆う帯状の軽剥離シート（第１シート）３とを有している。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a double-sided pressure-sensitive adhesive tape manufacturing apparatus 1 according to the present invention.
The double-sided pressure-sensitive adhesive tape manufacturing apparatus 1 manufactures a double-sided pressure-sensitive adhesive tape T in which a pressure-sensitive adhesive layer 2 having pressure-sensitive adhesive surfaces 2a and 2b on both sides is covered with release sheets 3 and 4.
As shown in FIG. 2, the double-sided pressure-sensitive adhesive tape T has a belt-like shape, the pressure-sensitive adhesive layer 2 composed of the photoreactive composition H, and a belt-like heavy release sheet (second film) covering the surface 2 a of the pressure-sensitive adhesive layer 2. Sheet) 4 and a strip-shaped light release sheet (first sheet) 3 covering the back surface 2b.
なお、粘着層２は、基材レス（芯なし）であって軽剥離シート３と重剥離シート４との間で単一層状に形成され、実質的に両面粘着テープとして使用されることなる。
また、両面粘着テープＴは、液晶パネルと液晶素子基板とを貼り合わせたりする際に用いられ、その基板パターンに応じてカットされるものである。
光反応性組成物Ｈは、光反応性ポリマー（重合物）を含有しており、光照射により架橋反応、つまり硬化反応を起こして硬化する（反応後は、感圧性接着剤となる）。なお、光反応性ポリマーは、モノマー（単量体）と比べて、酸素に触れてもその悪影響（酸素阻害）を受けにくい。
In addition, the adhesion layer 2 is a base material-less (core-free), is formed in a single layer shape between the light release sheet 3 and the heavy release sheet 4, and is substantially used as a double-sided adhesive tape.
The double-sided adhesive tape T is used when the liquid crystal panel and the liquid crystal element substrate are bonded together, and is cut according to the substrate pattern.
The photoreactive composition H contains a photoreactive polymer (polymer), and is cured by causing a crosslinking reaction, that is, a curing reaction by light irradiation (after the reaction, it becomes a pressure-sensitive adhesive). In addition, compared with a monomer (monomer), a photoreactive polymer is not easily affected by oxygen (oxygen inhibition) even when it is exposed to oxygen.
光反応性ポリマーは、例えば、アクリル系、ポリエステル系、エポキシ系などの光重合性組成物が用いられ、アクリル系の光重合性組成物が特に好ましく、透明か不透明かを問わない。
また、光反応性組成物Ｈが粘度の低いシロップ状態で用いられた場合、剥離シート３、４に対して垂れ等の問題で薄くしか塗布することができず、剥離シート３、４（離型面）上での弾きがあるため寸法安定性に支障があるが、粘度が高い溶融状態（ホットメルト状態）とした光反応性組成物Ｈを剥離シート３、４に塗布することで、例えば、厚みが１７５μｍの粘着層２を形成することができる。
As the photoreactive polymer, for example, an acrylic, polyester, or epoxy photopolymerizable composition is used, and an acrylic photopolymerizable composition is particularly preferable, regardless of whether it is transparent or opaque.
Further, when the photoreactive composition H is used in a syrup state having a low viscosity, it can be applied only thinly to the release sheets 3 and 4 due to problems such as dripping, and the release sheets 3 and 4 (release) Surface), there is a problem in dimensional stability because of repulsion, but by applying the photoreactive composition H in a molten state (hot melt state) having a high viscosity to the release sheets 3 and 4, for example, The pressure-sensitive adhesive layer 2 having a thickness of 175 μm can be formed.
剥離シート３、４は、シート状物の表面に剥離加工（シリコン樹脂等を塗工し硬化させた剥離層を形成）したものである。また、シート状物は、ＰＥＴ（ポリエチレンテレフタラート）や紙によって構成され、透光性のないものでもかまわない。
剥離シート３、４において、剥離するときに必要な力は調整可能であって、本発明における重剥離シート４は、剥離するときに軽剥離シート３よりもより強い力が必要となる。したがって、両面粘着テープＴは、いずれかの剥離シート３、４を剥がそうとした時には、軽剥離シート３が先に粘着層２から剥がれ、粘着層２が重剥離シート４側に張り付いたままとなる。
The release sheets 3 and 4 are obtained by subjecting the surface of a sheet-like material to release processing (forming a release layer formed by applying a silicone resin or the like and curing it). The sheet-like material may be made of PET (polyethylene terephthalate) or paper, and may be non-translucent.
In the release sheets 3 and 4, the force required when peeling is adjustable, and the heavy release sheet 4 in the present invention requires a stronger force than the light release sheet 3 when peeling. Therefore, when the double-sided pressure-sensitive adhesive tape T tries to peel off any of the release sheets 3 and 4, the light release sheet 3 is first peeled off from the adhesive layer 2, and the adhesive layer 2 remains attached to the heavy release sheet 4 side. It becomes.
図１に示す如く、両面粘着テープの製造装置１は、機枠（図示省略）と、この機枠の第１巻出部（図示省略）に設けられた支軸２１Ａに回動可能に支持されて軽剥離シート３が巻き掛けられた第１巻出ローラ（巻出ローラ）２１と、この機枠の第２巻出部（図示省略）に設けられた支軸２２Ａに回動可能に支持されて重剥離シート４が巻き掛けられた第２巻出ローラ（巻出ローラ）２２と、これらの巻出ローラ２１、２２から巻き出された軽剥離シート３や重剥離シート４を案内する複数の案内ローラ２３、…、２３と、機枠の巻取部（図示省略）に設けられた支軸２４Ａに回動可能に支持され且つ軽剥離シート３とともに粘着層２及び重剥離シート４を巻き取る巻取ローラ２４とを備えている。 As shown in FIG. 1, the double-sided adhesive tape manufacturing apparatus 1 is rotatably supported by a machine frame (not shown) and a support shaft 21A provided on a first unwinding portion (not shown) of the machine frame. Are supported by a first unwinding roller (unwinding roller) 21 around which the light release sheet 3 is wound and a support shaft 22A provided in a second unwinding portion (not shown) of the machine frame. A second unwinding roller (unwinding roller) 22 around which the heavy release sheet 4 is wound, and a plurality of light release sheets 3 and heavy release sheets 4 that are unwound from the unwinding rollers 21 and 22. .., 23 and a support shaft 24A provided in a winder (not shown) of the machine frame are rotatably supported, and the adhesive layer 2 and the heavy release sheet 4 are taken up together with the light release sheet 3. A winding roller 24 is provided.
また、これらの巻出ローラ２１、２２及び巻取ローラ２４は、機枠の巻出部及び巻取部に設けられた張力調整装置（図示省略）によって、軽剥離シート３や重剥離シート４の搬送時における張力を一定に保つように制御されている。
なお、軽剥離シート３（両面粘着テープＴ）の搬送経路上における第１巻出ローラ２１側を上流側とし、巻取ローラ２４側を下流側とする。
The unwinding rollers 21 and 22 and the unwinding roller 24 are formed on the light release sheet 3 and the heavy release sheet 4 by a tension adjusting device (not shown) provided at the unwinding unit and the winding unit of the machine frame. It is controlled to keep the tension during conveyance constant.
In addition, let the 1st unwinding roller 21 side on the conveyance path | route of the light peeling sheet 3 (double-sided adhesive tape T) be an upstream, and let the winding roller 24 side be a downstream.
前記第１巻出ローラ２１及び巻取ローラ２４の間には、上流側から順に、軽剥離シート３に光反応性組成物Ｈを塗布する塗布手段６と、粘着層２の表面２ａに光を照射する表光照射手段７と、粘着層２の表面２ａに重剥離シート４を貼り付ける表貼付手段８と、粘着層２から軽剥離シート３を剥がして裏面２ｂを露出させる剥離手段９と、露出した粘着層２の裏面２ｂに光を照射する裏光照射手段１０と、一旦剥がした軽剥離シート３を粘着層２の裏面２ｂに再び貼り付ける裏貼付手段１１とが設けられている。 Between the first unwinding roller 21 and the winding roller 24, light is applied to the surface 2a of the adhesive layer 2 and the application means 6 for applying the photoreactive composition H to the light release sheet 3 in order from the upstream side. Surface irradiation means 7 for irradiating; surface pasting means 8 for attaching the heavy release sheet 4 to the surface 2a of the adhesive layer 2; peeling means 9 for peeling the light release sheet 3 from the adhesive layer 2 to expose the back surface 2b; There is provided a back light irradiating means 10 for irradiating the exposed back surface 2b of the adhesive layer 2 and a back sticking means 11 for reattaching the light release sheet 3 once peeled off to the back surface 2b of the adhesive layer 2.
また、上述した巻出ローラ２１、２２、剥離手段９、裏貼付手段１１、各案内ローラ２３、巻取ローラ２４や、後述の回遊ローラ３０、３１等によって、第１シート搬送手段５が構成されている。
なお、第１シート搬送手段５は、塗布手段６の後述するバックアップロール２６から裏貼付手段１１まで、軽剥離シート３を略水平直線状態で搬送する。
Further, the first sheet conveying means 5 is constituted by the above-described unwinding rollers 21 and 22, the peeling means 9, the back sticking means 11, the guide rollers 23, the winding roller 24, and the after-mentioned rolling rollers 30 and 31. ing.
In addition, the 1st sheet conveyance means 5 conveys the light peeling sheet 3 in a substantially horizontal linear state from the backup roll 26 mentioned later of the application means 6 to the back sticking means 11.
前記塗布手段６は、第１巻出ローラ２１から繰り出された軽剥離シート３に光反応性組成物Ｈ（アクリル系光重合性組成物のホットメルト接着剤）を、軽剥離シート３に所定幅、所定厚さとなるように軽剥離シート３の一面（以下、表面とする）に塗布するためのものである。
この塗布手段６は、軽剥離シート３にホットメルト状態の光反応性組成物Ｈを塗布するためのリップコータ２５と、光反応性組成物Ｈが塗布された軽剥離シート３を下流側の表光照射手段７へ搬送するためのバックアップロール２６とを備えている。
The coating means 6 applies a photoreactive composition H (a hot melt adhesive of an acrylic photopolymerizable composition) to the light release sheet 3 fed from the first unwinding roller 21 and a predetermined width to the light release sheet 3. It is for applying to one surface (hereinafter referred to as the surface) of the light release sheet 3 so as to have a predetermined thickness.
The coating means 6 includes a lip coater 25 for coating the light release sheet 3 with the photoreactive composition H in a hot melt state, and the light release sheet 3 coated with the photoreactive composition H on the downstream side. A backup roll 26 for transporting to the irradiation means 7 is provided.
また、リップコータ２５は、バックアップロール２６に接触していない側の軽剥離シート３の一面（以下、軽剥離シート３の上面とする）から所定距離をおいて配置されているため、リップコータ２５から供給される光反応性組成物Ｈが軽剥離シート３の上面に塗布されるように、塗布手段６は構成されている。これにより、塗布した光反応性組成物Ｈを軽剥離シート３上にのせて搬送することが可能となる。 Further, since the lip coater 25 is disposed at a predetermined distance from one surface of the light release sheet 3 on the side not in contact with the backup roll 26 (hereinafter referred to as the upper surface of the light release sheet 3), the lip coater 25 is supplied from the lip coater 25. The application means 6 is configured so that the photoreactive composition H to be applied is applied to the upper surface of the light release sheet 3. Thereby, the applied photoreactive composition H can be transported on the light release sheet 3.
なお、粘着層２は、軽剥離シート３に覆われている面を裏面２ｂとし、その反対側で塗布直後は露出している面を表面２ａとしている。
ここで露出とは、外気に触れていることを示し、外部から透光性のある各剥離テープ３、４を介して視認できることは含まない。したがって、プラスチックフィルム越しなどに比べ、光の照射効率が高くなる。
The pressure-sensitive adhesive layer 2 has a surface covered with the light release sheet 3 as a back surface 2b and a surface exposed immediately after application on the opposite side as a surface 2a.
Here, the exposure means that it is in contact with the outside air, and it does not include being visible from the outside through the respective translucent peeling tapes 3 and 4. Therefore, the light irradiation efficiency is higher than that through a plastic film.
前記表光照射手段７は、粘着層２の表面２ａに塗布された光反応性組成物Ｈに光（紫外線）を上方から照射するためのものであって、複数個（本実施形態では２個）の紫外線発生用ランプ２７を有している。
この紫外線発生用ランプ２７としては、例えば、メタルハライドランプ、高圧水銀ランプなどの高圧放電ランプ、ケミカルランプ、ブラックライトランプ、捕虫用蛍光ランプなどの低圧放電ランプなどが好ましい。また、高圧放電ランプと低圧放電ランプとを組み合わせても使用することができる。
The said surface light irradiation means 7 is for irradiating light (ultraviolet rays) from the upper direction to the photoreactive composition H apply | coated to the surface 2a of the adhesion layer 2, Comprising: Two (in this embodiment, two pieces) ) For generating ultraviolet rays 27).
As the ultraviolet ray generating lamp 27, for example, a high pressure discharge lamp such as a metal halide lamp or a high pressure mercury lamp, a low pressure discharge lamp such as a chemical lamp, a black light lamp or a fluorescent lamp for catching insects is preferable. Further, a combination of a high pressure discharge lamp and a low pressure discharge lamp can be used.
紫外線発生用ランプ２７の照度は、光反応によって得られる光反応性ポリマーの硬化度合を左右するので、３００〜１２００ｍＷ／ｃｍ２ であり、好ましくは６００〜９００ｍＷ／ｃｍ２ 、さらに好ましくは７００〜８５０ｍＷ／ｃｍ２ である。
粘着層２に供給される表光照射手段７の積算光量は、粘着層２の厚みに比例するように設けられており、例えば、粘着層２の厚みが５０μｍの場合は略３００ｍｊ／ｃｍ２、厚みが１７５μｍの場合は略７００〜８００ｍｊ／ｃｍ２、厚みが３００μｍの場合は略１８００ｍｊ／ｃｍ２に設定される。
The illuminance of the ultraviolet generating lamp 27, since the left and right of the curing degree of the photoreactive polymer obtained by photoreaction is 300~1200mW / cm 2, preferably 600~900mW / cm 2, more preferably 700~850mW / Cm 2 .
The integrated light amount of the surface light irradiation means 7 supplied to the adhesive layer 2 is provided so as to be proportional to the thickness of the adhesive layer 2. For example, when the thickness of the adhesive layer 2 is 50 μm, approximately 300 mj / cm 2 , substantially 700~800mj / cm 2 when the thickness is 175 .mu.m, if the thickness is 300μm is set to about 1800 mJ / cm 2.
粘着層２は、表光照射手段７を経ることによって、表面２ａ側から光反応性組成物Ｈが紫外線に反応し、表面２ａから裏面２ｂに向かって粘着層２を所定の深さまで硬化させることができる。
なお、表光照射手段７は、軽剥離シート３上面の上方に配置されているため、粘着層２が軽剥離シート３上面の上方に位置した状態で粘着層２の表面２ａに対して光を直設照射できるため、塗布形成した粘着層２の表面２ａが硬化する前に変形することを防ぐことができる。
The adhesive layer 2 passes through the surface light irradiation means 7 so that the photoreactive composition H reacts to ultraviolet rays from the front surface 2a side and cures the adhesive layer 2 to a predetermined depth from the front surface 2a toward the back surface 2b. Can do.
In addition, since the surface light irradiation means 7 is arrange | positioned above the light peeling sheet 3 upper surface, light is irradiated with respect to the surface 2a of the adhesion layer 2 in the state in which the adhesion layer 2 was located above the light peeling sheet 3 upper surface. Since direct irradiation can be performed, it is possible to prevent the coated surface 2a of the adhesive layer 2 from being deformed before being cured.
前記表貼付手段８は、第２巻出ローラ２２から繰り出された重剥離シート４を粘着層２の表面２ａに貼り付けるものである。
表貼付手段８は、一対（２本）のフリーローラ２８、２９を有し、且つこれら２本のフリーローラ２８、２９が互いに外周面を当接させた平行組み合わせ構造とされたものであって、これら両フリーローラ２８、２９間で、軽剥離シート３、粘着層２及び重剥離シート４を挟持するようになっている。
The front sticking means 8 sticks the heavy release sheet 4 fed from the second unwinding roller 22 to the surface 2 a of the adhesive layer 2.
The front sticking means 8 has a pair of (two) free rollers 28 and 29 and a parallel combination structure in which the two free rollers 28 and 29 are in contact with each other on the outer peripheral surface. The light release sheet 3, the adhesive layer 2 and the heavy release sheet 4 are sandwiched between the free rollers 28 and 29.
これによって、粘着層２の表面２ａに重剥離シート４を貼り付けられ、両面粘着テープＴは、粘着層２を剥離シート３、４で覆った状態となる。
前記剥離手段９は、両面粘着テープＴにおける軽剥離シート３側に配置されていて、当該軽剥離シート３を下方へ向けて導いて両面粘着テープＴから遠ざけ、両面粘着テープＴの粘着層２の裏面２ｂから軽剥離シート３を剥離して、粘着層２及び重剥離シート４と、軽剥離シート３とに分離するようになっている。したがって、両面粘着テープＴが剥離手段９を通過することによって、粘着層２の裏面２ｂが露出することとなる。
As a result, the heavy release sheet 4 is attached to the surface 2 a of the adhesive layer 2, and the double-sided adhesive tape T is in a state where the adhesive layer 2 is covered with the release sheets 3 and 4.
The peeling means 9 is disposed on the light release sheet 3 side of the double-sided pressure-sensitive adhesive tape T, guides the light release sheet 3 downward and away from the double-sided pressure-sensitive adhesive tape T. The light release sheet 3 is peeled from the back surface 2b and separated into the pressure-sensitive adhesive layer 2, the heavy release sheet 4, and the light release sheet 3. Therefore, when the double-sided adhesive tape T passes through the peeling means 9, the back surface 2b of the adhesive layer 2 is exposed.
なお、粘着層２及び重剥離シート４は、剥離手段９を通過後も略水平直線状態を維持して搬送されるようになっている。
前記裏光照射手段１０は、略水平直線状態に維持された粘着層２及び重剥離シート４の下方に配置されており、露出した粘着層２の裏面２ｂに対し、光を直接照射する紫外線発生用ランプ２７を複数（本実施形態では２つ）有している。また、紫外線発生用ランプ２７の構成及び照度や、照射手段としての積算光量等は、上述した表光照射手段７と同様である。
The pressure-sensitive adhesive layer 2 and the heavy release sheet 4 are conveyed while maintaining a substantially horizontal straight line state even after passing through the peeling means 9.
The back light irradiating means 10 is disposed below the pressure-sensitive adhesive layer 2 and the heavy release sheet 4 that are maintained in a substantially horizontal straight line state, and generates ultraviolet rays that directly irradiate light to the exposed back surface 2b of the pressure-sensitive adhesive layer 2. There are a plurality of lamps 27 (two in this embodiment). Further, the configuration and illuminance of the ultraviolet ray generation lamp 27, the integrated light quantity as the irradiation means, and the like are the same as those of the surface light irradiation means 7 described above.
裏光照射手段１０を経ることによって、粘着層２は、裏面２ｂ側から光反応性組成物Ｈが紫外線に硬化反応をおこし、裏面２ｂから表面２ａに向かって粘着層２を所定の深さまで硬化させることとなる。
つまり、粘着層２は、表裏両面２ａ、２ｂから同じように、直接の光照射をすることが可能となって、粘着層２における表裏の粘着面２ａ、２ｂの硬さや粘着度等を略同一にすることができる。
By passing through the back light irradiating means 10, the pressure-sensitive adhesive layer 2 is cured from the back surface 2b side to the ultraviolet ray by the photoreactive composition H, and the pressure-sensitive adhesive layer 2 is cured from the back surface 2b toward the front surface 2a to a predetermined depth. Will be allowed to.
That is, the adhesive layer 2 can be directly irradiated with light from the front and back surfaces 2a and 2b in the same manner, and the hardness and the degree of adhesion of the front and back adhesive surfaces 2a and 2b in the adhesive layer 2 are substantially the same. Can be.
一方、軽剥離シート３は、剥離手段９の略下方に設けられた回遊ローラ３０を介して、粘着層２の下方を回遊するように誘導された後、上述した裏貼付手段１１の略下方に設けられた回遊ローラ３１を介して前記裏貼付手段１１へと送り出される。
すなわち、軽剥離シート３は、回遊ローラ３０、３１によって、略水平一直線に搬送された粘着層２及び重剥離シート４の下方に配置された裏光照射手段１０のさらに下方にて回遊される。
On the other hand, the light release sheet 3 is guided to move below the adhesive layer 2 via a rotation roller 30 provided substantially below the release means 9, and then substantially below the back sticking means 11 described above. It is sent out to the back sticking means 11 through the provided idler roller 31.
That is, the light release sheet 3 is moved by the rolling rollers 30 and 31 further below the back light irradiation means 10 disposed below the pressure-sensitive adhesive layer 2 and the heavy release sheet 4 conveyed in a substantially horizontal straight line.
前記裏貼付手段１１は、表貼付手段８と同様に、平行に組み合わされた一対（２本）のフリーローラ３２、３３を有しており、これら両フリーローラ３２、３３間で、軽剥離シート３、粘着層２及び重剥離シート４を挟持するようになっている。
これによって、粘着層２の裏面２ｂに軽剥離シート３を貼り付けられ、両面粘着テープＴは、再び粘着層２が剥離シート３、４に覆われた状態となる。
Similar to the front sticking means 8, the back sticking means 11 has a pair of (two) free rollers 32, 33 combined in parallel, and a light release sheet between these free rollers 32, 33. 3. The adhesive layer 2 and the heavy release sheet 4 are sandwiched.
As a result, the light release sheet 3 is attached to the back surface 2 b of the adhesive layer 2, and the double-sided adhesive tape T is again in a state where the adhesive layer 2 is covered with the release sheets 3 and 4.
この状態で両面粘着テープＴは、ロール状に巻取ローラ２４に巻き取られる。
両面粘着テープの製造装置１の使用態様、つまり両面粘着テープの製造方法を説明する。
まず軽剥離シート３のロールを第１巻出ローラ２１の支軸２１Ａに取り付け、軽剥離シート３の先端を、塗布手段６、表貼付手段８、剥離手段９、回遊ローラ３０、３１、裏貼付手段１１に掛け渡した後、巻取ローラ２４の支軸２４Ａに取り付ける。また、重剥離シート４のロールを第２巻出ローラ２２の支軸２２Ａに取り付け、重剥離シート４の先端を、表貼付手段８、剥離手段９、裏貼付手段１１に掛け渡した後、巻取ローラ２４の支軸２４Ａに取り付ける。取り付けた後、張力調整装置により一定の張力を保ちながら、軽剥離シート３及び重剥離シート４に駆動力を与え、搬送を開始する。
In this state, the double-sided adhesive tape T is wound around the winding roller 24 in a roll shape.
The usage aspect of the manufacturing apparatus 1 of a double-sided adhesive tape, ie, the manufacturing method of a double-sided adhesive tape, is demonstrated.
First, the roll of the light release sheet 3 is attached to the support shaft 21A of the first unwinding roller 21, and the tip of the light release sheet 3 is applied to the coating means 6, the front sticking means 8, the peeling means 9, the traveling rollers 30, 31, and the back sticking. After passing over the means 11, it is attached to the support shaft 24 </ b> A of the take-up roller 24. In addition, the roll of the heavy release sheet 4 is attached to the support shaft 22A of the second unwinding roller 22, and the leading end of the heavy release sheet 4 is passed over the front sticking means 8, the peeling means 9 and the back sticking means 11 and then wound. It is attached to a support shaft 24A of the taking roller 24. After the attachment, a driving force is applied to the light release sheet 3 and the heavy release sheet 4 while maintaining a constant tension by a tension adjusting device, and conveyance is started.
図１に示すように、軽剥離シート３の搬送が開始されるとともに、塗布手段６で軽剥離シート３にホットメルト状態の光反応性組成物Ｈが塗布され、軽剥離シート３が下流へ搬送されるに伴って、軽剥離シート３の表面側に粘着層２が形成される。
粘着層２は、軽剥離シート３とともに下流へ搬送されながら、表光照射手段７によって表面２ａに紫外線が照射される。これによって、粘着層２は、露出している表面２ａ側から重合反応が起こり、表面２ａから裏面２ｂにかけて徐々に硬化されていく（図２参照）。なお、粘着層２の表面２ａに粘着面が形成される。
As shown in FIG. 1, the light release sheet 3 starts to be transported, and the application means 6 applies the photoreactive composition H in a hot melt state to the light release sheet 3 so that the light release sheet 3 is transported downstream. As a result, the pressure-sensitive adhesive layer 2 is formed on the surface side of the light release sheet 3.
While the pressure-sensitive adhesive layer 2 is conveyed downstream together with the light release sheet 3, the surface 2 a is irradiated with ultraviolet rays by the surface light irradiation means 7. Thus, the adhesive layer 2 undergoes a polymerization reaction from the exposed surface 2a side, and is gradually cured from the surface 2a to the back surface 2b (see FIG. 2). An adhesive surface is formed on the surface 2 a of the adhesive layer 2.
この粘着層２の表面２ａに、第２巻出ローラ２２から巻き出された重剥離シート４を、表貼付手段８によって貼り付けていく。
次に、剥離手段９によって、粘着層２から軽剥離シート３を剥がしていく。このとき、粘着層２は、剥離するときに軽剥離シート３よりもより強い力が必要な重剥離シート４に張り付いたままとなる。
The heavy release sheet 4 unwound from the second unwinding roller 22 is pasted onto the surface 2 a of the adhesive layer 2 by the surface pasting means 8.
Next, the light release sheet 3 is peeled off from the adhesive layer 2 by the peeling means 9. At this time, the pressure-sensitive adhesive layer 2 remains attached to the heavy release sheet 4 that requires a stronger force than the light release sheet 3 when peeling.
軽剥離シート３が下方を回遊している間は、粘着層２の裏面２ｂは露出しており、この裏面２ｂに裏光照射手段１０によって紫外線が照射される。これによって、粘着層２は、裏面２ｂ側からも重合反応が起こり、裏面２ｂから表面２ａにかけて徐々に硬化されていき（図２参照）、粘着層２の裏面２ｂにも粘着面が形成される。
このあと、裏貼付手段１１によって、一旦剥離していた軽剥離シート３を再び粘着層２の裏面２ｂに貼り付ける。そして、感圧性接着剤となった粘着層２を表裏から剥離シート３、４で覆った状態で両面粘着テープＴを、巻取ローラ２４にロール状に巻き取る。
While the light release sheet 3 is traveling downward, the back surface 2b of the adhesive layer 2 is exposed, and the back light irradiation means 10 irradiates the back surface 2b with ultraviolet rays. As a result, the adhesive layer 2 also undergoes a polymerization reaction from the back surface 2b side and is gradually cured from the back surface 2b to the front surface 2a (see FIG. 2), and an adhesive surface is also formed on the back surface 2b of the adhesive layer 2. .
Thereafter, the light release sheet 3 once peeled off is attached to the back surface 2 b of the adhesive layer 2 again by the back sticking means 11. And the double-sided adhesive tape T is wound up by the winding roller 24 in the shape of a roll in the state which covered the adhesive layer 2 used as the pressure sensitive adhesive with the peeling sheets 3 and 4 from the front and back.
したがって、粘着層２の軽剥離シート３に覆われた裏面２ｂを、剥離手段９によって露出させた後に、裏光照射手段１０で光照射して硬化することによって、粘着層２の裏面２ｂに対して紫外線を直接照射することができ、軽剥離シート３を剥離することで粘着層２の表裏両面焼きが可能となる。
よって、粘着層２は、表面２ａから紫外線を照射して浸透させ裏面２ｂまで硬化する場合よりも、表裏両面から硬化する方が表裏を適正硬度に硬化でき、且つ硬化速度を上げることが可能となり、両面粘着テープＴの性能及び生産性を向上させることができる。
Therefore, after the back surface 2b covered with the light release sheet 3 of the adhesive layer 2 is exposed by the peeling means 9, the back light irradiation means 10 is irradiated with light and cured, whereby the back surface 2b of the adhesive layer 2 is exposed. Thus, both the front and back sides of the pressure-sensitive adhesive layer 2 can be baked by peeling the light release sheet 3.
Therefore, the adhesive layer 2 can be cured to an appropriate hardness and the curing speed can be increased by curing from the front and back surfaces, compared to the case where the surface 2a is irradiated with ultraviolet rays to penetrate and cured to the back surface 2b. The performance and productivity of the double-sided pressure-sensitive adhesive tape T can be improved.
また、両面粘着テープの製造装置１によって、一連の流れの中で、粘着層２の表面２ａ及び裏面２ｂの両方を連結して光を直接照射することができ、粘着層２の硬化速度がさらに上がり生産性が上げられる。
そして、粘着層２の表面２ａ及び裏面２ｂの両方を剥離シート３、４で覆うため、粘着面が露出せず、保管時や運搬持の取り扱いが容易となる。
In addition, the double-sided pressure-sensitive adhesive tape manufacturing apparatus 1 can directly irradiate light by connecting both the front surface 2a and the back surface 2b of the pressure-sensitive adhesive layer 2 in a series of flows. Increases productivity.
And since both the surface 2a and the back surface 2b of the adhesion layer 2 are covered with the peeling sheets 3 and 4, an adhesion surface is not exposed and handling at the time of storage or carrying becomes easy.
なお、本発明は、前述した実施形態に限定されるものではない。両面粘着テープの製造装置１等の各構成又は全体の構造、形状、寸法などは、本発明の趣旨に沿って適宜変更することができる。
両面粘着テープの製造装置１は、重剥離シート４のかわりに、第２シート４として、液晶素子等の基板テープを用いてもよい。この場合、剥離手段９によって軽剥離シート３を剥がしたときも、基板テープは粘着層２の表面２ａに張り付いたままとなる。
In addition, this invention is not limited to embodiment mentioned above. Each structure of the manufacturing apparatus 1 etc. of a double-sided adhesive tape, or the whole structure, a shape, a dimension, etc. can be suitably changed along the meaning of this invention.
The double-sided pressure-sensitive adhesive tape manufacturing apparatus 1 may use a substrate tape such as a liquid crystal element as the second sheet 4 instead of the heavy release sheet 4. In this case, even when the light release sheet 3 is peeled off by the peeling means 9, the substrate tape remains attached to the surface 2 a of the adhesive layer 2.
両面粘着テープＴは、光反応性組成物Ｈとしてポリマーを使用することにより簡便な装置で高速生産ができるが、モノマー（単量体）を用いることもできる。
例えば、光照射によりカチオン（酸）を発生する光反応開始剤と、発生したその酸と反応するモノマーとの組合せを光反応性組成物Ｈとして使用した場合は、両面粘着テープの製造装置１にそのまま使用できる。
The double-sided pressure-sensitive adhesive tape T can be produced at high speed with a simple apparatus by using a polymer as the photoreactive composition H, but a monomer (monomer) can also be used.
For example, when a combination of a photoreaction initiator that generates a cation (acid) by light irradiation and a monomer that reacts with the generated acid is used as the photoreactive composition H, the double-sided pressure-sensitive adhesive tape manufacturing apparatus 1 is used. Can be used as is.
また、酸素に触れることで硬化速度が遅くなる（酸素阻害が生じる）モノマーの場合でも、前記製造装置１を窒素雰囲気下にて使用することが可能となる。
第１シート搬送手段５は、塗布手段６のバックアップロール２６から裏貼付手段１１まで、第１シート３を略水平直線状態でなくとも、上下方向や斜めに搬送してもよい。
塗布手段６は、リップコータ２５に限定されるものではなく、光反応性組成物Ｈの厚み調整の手法も各塗工方式に合わせて、リバースコータやグラビアコータなどの他の塗工方式のものであってもよい。
Further, even in the case of a monomer whose curing rate is slowed by contact with oxygen (oxygen inhibition occurs), the production apparatus 1 can be used in a nitrogen atmosphere.
The first sheet conveying means 5 may convey the first sheet 3 from the backup roll 26 of the applying means 6 to the back sticking means 11 in the vertical direction or diagonally, even if it is not in a substantially horizontal linear state.
The coating means 6 is not limited to the lip coater 25, and the method for adjusting the thickness of the photoreactive composition H is also of another coating method such as a reverse coater or a gravure coater in accordance with each coating method. There may be.
光反応性組成物Ｈは、紫外線以外の光に反応する物質であってもよく、その際、光照射手段７、１０は、可視光線や赤外線を発生させるランプによって構成されていてもよい。 The photoreactive composition H may be a substance that reacts to light other than ultraviolet rays. In this case, the light irradiation means 7 and 10 may be constituted by a lamp that generates visible light or infrared rays.
１ 両面粘着テープの製造装置
２ 粘着層
２ａ 粘着層の表面
２ｂ 粘着層の裏面
３ 第１シート（軽剥離シート）
４ 第２シート（重剥離シート）
５ 第１シート搬送手段
６ 塗布手段
７ 表光照射手段
８ 表貼付手段
９ 剥離手段
１０ 裏光照射手段
１１ 裏貼付手段
Ｔ 両面粘着テープ
Ｈ 光反応性組成物
DESCRIPTION OF SYMBOLS 1 Double-sided adhesive tape manufacturing apparatus 2 Adhesive layer 2a Adhesive layer surface 2b Adhesive layer back surface 3 First sheet (light release sheet)
4 Second sheet (heavy release sheet)
DESCRIPTION OF SYMBOLS 5 1st sheet conveyance means 6 Application | coating means 7 Front light irradiation means 8 Front sticking means 9 Peeling means 10 Back light irradiation means 11 Back sticking means T Double-sided adhesive tape H Photoreactive composition
Claims (5)
前記粘着層（２）の表裏粘着面（２ａ、２ｂ）はともに、前記第１シート（３）及び第２シート（４）を貼り付ける前に露出した状態でそれぞれ直接の光照射によって硬化されていることを特徴とする両面粘着テープ。 From the adhesive layer (2) from the first sheet (3) and the first sheet (3) to the front and back adhesive surfaces (2a, 2b) of the adhesive layer (2) formed of the photoreactive composition (H) A double-sided adhesive tape with a second sheet (4) that is difficult to peel off,
Both the front and back adhesive surfaces (2a, 2b) of the adhesive layer (2) are cured by direct light irradiation in an exposed state before the first sheet (3) and the second sheet (4) are attached. Double-sided adhesive tape characterized by
光反応性組成物（Ｈ）を第１シート（３）に塗布して前記粘着層（２）を形成し、
前記粘着層（２）の露出している表面（２ａ）を直接の光照射によって硬化した後に、前記第１シート（３）より粘着層（２）から剥がれにくい第２シート（４）を前記粘着層（２）の表面（２ａ）に貼り付け、
前記第２シート（４）が貼り付けられた粘着層（２）の裏面（２ｂ）から第１シート（３）を一旦剥がして前記粘着層（２）の裏面（２ｂ）を露出させ、前記粘着層（２）の露出している裏面（２ｂ）を直接の光照射によって硬化した後に、前記粘着層（２）の裏面（２ｂ）に一旦剥がした前記第１シート（３）を再び貼り付けることを特徴とする両面粘着テープの製造方法。 A method for producing a double-sided pressure-sensitive adhesive tape having pressure-sensitive adhesive surfaces (2a, 2b) on both sides of the pressure-sensitive adhesive layer (2),
Applying the photoreactive composition (H) to the first sheet (3) to form the adhesive layer (2),
After the exposed surface (2a) of the pressure-sensitive adhesive layer (2) is cured by direct light irradiation, the second sheet (4), which is less likely to peel from the pressure-sensitive adhesive layer (2) than the first sheet (3), is adhered to the pressure-sensitive adhesive layer. Affixed to the surface (2a) of the layer (2),
The first sheet (3) is once peeled off from the back surface (2b) of the pressure-sensitive adhesive layer (2) to which the second sheet (4) is attached, and the back surface (2b) of the pressure-sensitive adhesive layer (2) is exposed, and the pressure-sensitive adhesive layer After the exposed back surface (2b) of the layer (2) is cured by direct light irradiation, the first sheet (3) once peeled off is attached to the back surface (2b) of the adhesive layer (2) again. A method for producing a double-sided pressure-sensitive adhesive tape characterized by
この光反応性ポリマーをホットメルト状態で第１シート（３）の上面に塗布し、前記粘着層（２）の上方から光を直接照射していることを特徴とする請求項２に記載の両面粘着テープの製造方法。 The photoreactive composition (H) is a photoreactive polymer,
3. The double-sided surface according to claim 2, wherein the photoreactive polymer is applied to the upper surface of the first sheet (3) in a hot melt state, and light is directly irradiated from above the adhesive layer (2). Manufacturing method of adhesive tape.
第１シート（３）を搬送する第１シート搬送手段（５）と、
搬送される前記第１シート（３）に光反応性組成物（Ｈ）を塗布して前記粘着層（２）を形成する塗布手段（６）と、
前記粘着層（２）の露出している表面（２ａ）を直接の光照射によって硬化させる表光照射手段（７）と、
硬化された前記粘着層（２）の表面（２ａ）に第１シート（３）より粘着層（２）から剥がれにくい第２シート（４）を貼り付ける表貼付手段（８）と、
前記第２シート（４）が貼り付けられた粘着層（２）から第１シート（３）を一旦剥がして裏面（２ｂ）を露出させる剥離手段（９）と、
前記粘着層（２）の露出している裏面（２ｂ）を直接の光照射によって硬化させる裏光照射手段（１０）と、
硬化された前記粘着層（２）の裏面（２ｂ）に一旦剥がした前記第１シート（３）を再び貼り付ける裏貼付手段（１１）とを有していることを特徴とする両面粘着テープの製造装置。 An apparatus for producing a double-sided pressure-sensitive adhesive tape having adhesive surfaces (2a, 2b) on the front and back of the adhesive layer (2),
First sheet conveying means (5) for conveying the first sheet (3);
Application means (6) for applying the photoreactive composition (H) to the conveyed first sheet (3) to form the adhesive layer (2);
Surface irradiation means (7) for curing the exposed surface (2a) of the adhesive layer (2) by direct light irradiation;
A surface pasting means (8) for affixing the second sheet (4) which is hard to peel off from the adhesive layer (2) to the surface (2a) of the cured adhesive layer (2) from the first sheet (3);
Peeling means (9) for once peeling off the first sheet (3) from the adhesive layer (2) to which the second sheet (4) has been attached to expose the back surface (2b);
Backlight irradiation means (10) for curing the exposed back surface (2b) of the adhesive layer (2) by direct light irradiation;
A double-sided pressure-sensitive adhesive tape comprising a back sticking means (11) for re-sticking the first sheet (3) once peeled off to the back surface (2b) of the cured pressure-sensitive adhesive layer (2) Manufacturing equipment.
前記塗布手段（６）は、前記光反応性ポリマーをホットメルト状態で第１シート（３）上面に塗布可能に構成され、
前記表光照射手段（７）は第１シート（３）上面の上方から光を直接照射可能に配置されていることを特徴とする請求項４に記載の両面粘着テープの製造装置。 The photoreactive composition (H) is a photoreactive polymer,
The application means (6) is configured to be able to apply the photoreactive polymer on the upper surface of the first sheet (3) in a hot melt state,
The said surface light irradiation means (7) is arrange | positioned so that light can be directly irradiated from the upper direction of a 1st sheet | seat (3), The manufacturing apparatus of the double-sided adhesive tape of Claim 4 characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010009058A JP5476136B2 (en) | 2010-01-19 | 2010-01-19 | Double-sided adhesive tape, double-sided adhesive tape manufacturing method and manufacturing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010009058A JP5476136B2 (en) | 2010-01-19 | 2010-01-19 | Double-sided adhesive tape, double-sided adhesive tape manufacturing method and manufacturing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011148856A true JP2011148856A (en) | 2011-08-04 |
| JP5476136B2 JP5476136B2 (en) | 2014-04-23 |
Family
ID=44536155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010009058A Expired - Fee Related JP5476136B2 (en) | 2010-01-19 | 2010-01-19 | Double-sided adhesive tape, double-sided adhesive tape manufacturing method and manufacturing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5476136B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013116962A (en) * | 2011-12-02 | 2013-06-13 | Three M Innovative Properties Co | Method for manufacturing double-sided adhesive material, and article having the double-sided adhesive material |
| JP2013237485A (en) * | 2012-05-17 | 2013-11-28 | Toppan Printing Co Ltd | Pouch |
| US10297171B2 (en) | 2011-08-01 | 2019-05-21 | Avery Dennison Corporation | Labels subject of condensation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625625A (en) * | 1992-05-14 | 1994-02-01 | Sekisui Chem Co Ltd | Production of double-sided tape |
| JPH11245341A (en) * | 1998-03-03 | 1999-09-14 | Sekisui Chem Co Ltd | Laminate |
-
2010
- 2010-01-19 JP JP2010009058A patent/JP5476136B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625625A (en) * | 1992-05-14 | 1994-02-01 | Sekisui Chem Co Ltd | Production of double-sided tape |
| JPH11245341A (en) * | 1998-03-03 | 1999-09-14 | Sekisui Chem Co Ltd | Laminate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10297171B2 (en) | 2011-08-01 | 2019-05-21 | Avery Dennison Corporation | Labels subject of condensation |
| JP2013116962A (en) * | 2011-12-02 | 2013-06-13 | Three M Innovative Properties Co | Method for manufacturing double-sided adhesive material, and article having the double-sided adhesive material |
| US9649790B2 (en) | 2011-12-02 | 2017-05-16 | 3M Innovative Properties Company | Manufacturing method for double-sided adhesive material, and article provided with double-sided adhesive material |
| JP2013237485A (en) * | 2012-05-17 | 2013-11-28 | Toppan Printing Co Ltd | Pouch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5476136B2 (en) | 2014-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5255502B2 (en) | Polarizing plate manufacturing apparatus and manufacturing method, and polarizing plate and optical laminate obtained by the manufacturing method | |
| CA2918390C (en) | Digital printed duct tape | |
| JP2012505930A (en) | Tape material and roll having pressure sensitive adhesive | |
| CN113793961B (en) | Five-in-one forming equipment | |
| JPH0799379A (en) | Manufacture of flexible printed-wiring board | |
| JP5476136B2 (en) | Double-sided adhesive tape, double-sided adhesive tape manufacturing method and manufacturing apparatus | |
| AU1368200A (en) | A pressure-sensitive adhesive laminate, a method and a device for modifying an initial release force in such laminate | |
| JPS5815537A (en) | Production of release paper | |
| JP2010202734A (en) | Apparatus and method for producing sheet, and adhered sheet material | |
| JP2013188872A (en) | Linerless label manufacturing apparatus | |
| US4544573A (en) | Process for curing radiation curable coating media | |
| JP2013076906A (en) | Mountless label and production method thereof | |
| JP2004322408A (en) | Method and apparatus for manufacturing optically reactive composition sheet | |
| JP5430044B1 (en) | Manufacturing method of protective plate for display device and manufacturing apparatus thereof | |
| JPH11350398A (en) | Method for coating of paper face and coating apparatus | |
| JP3905603B2 (en) | Film pasting method and apparatus | |
| JP5394954B2 (en) | Winding up the gel sheet | |
| JP2009096909A (en) | Method and apparatus for manufacturing double-sided tape | |
| JP2011179013A (en) | Laminated sheet and manufacturing method therefor | |
| JP3905601B2 (en) | Film pasting method and apparatus | |
| JP4557166B2 (en) | Method and apparatus for producing adhesive tape | |
| JP3834709B2 (en) | Method and apparatus for producing adhesive tape | |
| JP2004009422A (en) | Process and apparatus for manufacturing photo-reaction product sheet | |
| JP2012111046A (en) | Processing apparatus for sheet film | |
| JP5708146B2 (en) | Manufacturing method of optical sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20110926 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130325 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130402 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130531 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131105 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20131224 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140128 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140207 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5476136 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |