JPH11335632A - Pressure-sensitive pseudoadhesive sheet - Google Patents
Pressure-sensitive pseudoadhesive sheetInfo
- Publication number
- JPH11335632A JPH11335632A JP16416798A JP16416798A JPH11335632A JP H11335632 A JPH11335632 A JP H11335632A JP 16416798 A JP16416798 A JP 16416798A JP 16416798 A JP16416798 A JP 16416798A JP H11335632 A JPH11335632 A JP H11335632A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- sensitive adhesive
- sensitive
- adhesive
- core
- 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
Landscapes
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、配送伝票、親展葉
書、宛名ラベル等に使用することのできる安価で、明瞭
に感圧接着剤層に印字又は印刷でき、感圧接着剤層と被
接着シートを重ね合わせ、疑似接着させた後剥離させて
も、情報を明瞭に読み取れる感圧接着剤層を有する感圧
疑似接着シートに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inexpensive and clear printing or printing method for a pressure sensitive adhesive layer which can be used for delivery slips, confidential postcards, address labels and the like. The present invention relates to a pressure-sensitive pseudo-adhesive sheet having a pressure-sensitive adhesive layer from which information can be clearly read even when sheets are superimposed, pseudo-adhered, and then peeled off.
【０００２】[0002]
【従来の技術】従来知られている一般的な配送伝票の構
成は、少なくとも配送部と受領部を含む複数枚の配送部
を重ねて、切り取り可能に綴じあわせ、上位の伝票に配
送情報を記入すると下位の伝票に複写記入されるように
複写構造を設けたものである。2. Description of the Related Art Conventionally, a general delivery slip has a configuration in which a plurality of delivery sections including at least a delivery section and a receiving section are overlapped and stapled, and delivery information is written in a higher-order slip. Then, a copy structure is provided so that the lower-order slip can be copied and entered.
【０００３】かかる配送情報を有する情報伝達手段とし
て、特願平8-326355号に例示される、感圧疑似接着シー
トを利用したものが発明され盛んに利用されている。As an information transmitting means having such delivery information, a device using a pressure-sensitive pseudo-adhesive sheet, which is exemplified in Japanese Patent Application No. 8-326355, has been invented and actively used.
【０００４】これら感圧疑似接着性シートは、基材シー
トの少なくとも片面の一部に、天然ゴム、合成ゴムなど
のいわゆる非剥離性感圧接着剤基剤と、その感圧接着剤
基剤の接着力を抑制する微細粒子充填剤とからなる感圧
接着剤の層が設けられており、一時的に接着するが必要
時に容易に剥離できる機能を有するものが一般的であ
る。[0004] In these pressure-sensitive pseudo-adhesive sheets, a so-called non-peelable pressure-sensitive adhesive base such as natural rubber or synthetic rubber is bonded to at least a part of one side of a base sheet. A layer of a pressure-sensitive adhesive comprising a fine particle filler for suppressing the force is provided, and generally has a function of temporarily adhering but having a function of easily peeling off when necessary.
【０００５】前記感圧接着剤は、黄変化、接着力の低
下、硬化に代表されるように経時的に劣化する（以下老
化現象という）ものであり、特に天然ゴムは老化現象に
よる性能変化が著しい。一般に、感圧接着剤の老化現象
は、大気中の酸素との接触及び紫外線吸収などによる酸
化が主因とされている。また通常感圧接着剤層中に微細
粒子充填剤が配合されているが、この微細粒子充填剤の
配合量や分散状態によって接着強度が安定しない問題も
ある。また、感圧接着剤調整時の機械安定性が悪く、基
材シートへの塗布適性にも問題がある。したがって、従
来、感圧疑似接着性シートにおいては、感圧接着剤層中
に感圧接着剤の酸化を防止するための酸化防止剤および
紫外線吸収防止剤を添加している。The pressure-sensitive adhesive deteriorates with time (hereinafter referred to as aging phenomenon) as represented by yellowing, a decrease in adhesive strength, and curing. Natural rubber, in particular, has a performance change due to the aging phenomenon. Remarkable. Generally, the aging phenomenon of the pressure-sensitive adhesive is mainly caused by oxidation due to contact with atmospheric oxygen and absorption of ultraviolet rays. In addition, the fine particle filler is usually compounded in the pressure-sensitive adhesive layer, but there is a problem that the bonding strength is not stable depending on the amount of the fine particle filler and the dispersion state. Further, the mechanical stability at the time of adjusting the pressure-sensitive adhesive is poor, and there is also a problem in suitability for application to the base sheet. Therefore, conventionally, in a pressure-sensitive pseudo-adhesive sheet, an antioxidant and an ultraviolet absorption inhibitor for preventing oxidation of the pressure-sensitive adhesive are added to the pressure-sensitive adhesive layer.
【０００６】更に、感圧接着剤の塗布適性向上のため粘
着付与剤、界面活性剤、増粘剤、消泡剤、離型剤なども
同一感圧接着剤層中に添加しているため、製造コストが
高くなり、安価な資材を利用するメリットが失われてし
まう欠点があった。Further, a tackifier, a surfactant, a thickener, a defoaming agent, a release agent, and the like are added to the same pressure-sensitive adhesive layer in order to improve the applicability of the pressure-sensitive adhesive. There is a disadvantage that the production cost is increased and the advantage of using inexpensive materials is lost.
【０００７】近年では、このような配送情報を必要とす
る連絡手段の需要急増に伴い、高効率かつ高品位な感圧
疑似接着シートへの情報印刷が要求されるようになって
おり、このため、感圧疑似接着シートへの情報印刷方法
は、従来用いられていたコンピュータと組み合わせたイ
ンパクトプリンタによる印刷から、コンピュータと組み
合わせた電子写真法やインクジェット記録法による印刷
にシフトしつつあり、トナー再転写、インクの滲み等の
問題が発生している。In recent years, with the rapid increase in demand for communication means requiring such delivery information, it has been required to print information on a high-efficiency and high-quality pressure-sensitive pseudo-adhesive sheet. The method of printing information on the pressure-sensitive pseudo-adhesive sheet has been shifting from printing with an impact printer, which was conventionally used in combination with a computer, to printing using an electrophotographic method or an inkjet recording method with a computer, and toner retransfer. In addition, problems such as ink bleeding have occurred.
【０００８】[0008]
【発明が解決しようとする課題】従って、本発明の目的
は、安定した感圧接着力を有すると共に、感圧接着剤の
塗布層のべたつきを抑え、加工時におけるブロッキング
等を起こさず、印刷適性に優れ、被接着材を選ばない剥
離可能な感圧疑似接着性能を持つ感圧疑似接着シートを
提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a stable pressure-sensitive adhesive force, suppress the stickiness of the pressure-sensitive adhesive applied layer, prevent blocking during processing, and improve printability. It is an object of the present invention to provide a pressure-sensitive pseudo-adhesive sheet having excellent pressure-sensitive pseudo-adhesive performance that is excellent and can be peeled without selecting a material to be bonded.
【０００９】[0009]
【課題を解決するための手段】本発明者らは、鋭意研究
を重ねた結果、上記の諸目的は、感圧接着剤層が、ガラ
ス転移点が−９０〜５０℃の範囲にあるアクリル酸エス
テル（Ａ）からなるコア部と、水溶性樹脂（Ｂ）からな
るシェル層で構成された、コア／シェル型共重合体粒子
を主成分として含むアクリル樹脂エマルジョン感圧接着
剤と、微細粒子充填剤を基本成分として含有する層であ
って、コア／シェル層の重量比が２０／１〜１／５の範
囲にあることを特徴とする感圧接着剤層を設けた、感圧
疑似接着シートによって達成できることを見出した。The inventors of the present invention have conducted intensive studies, and as a result, the above-mentioned objects have been achieved in that the pressure-sensitive adhesive layer has an acrylic acid having a glass transition point in the range of -90 to 50 ° C. Acrylic resin emulsion pressure-sensitive adhesive containing core / shell type copolymer particles as a main component, comprising a core portion composed of an ester (A) and a shell layer composed of a water-soluble resin (B); Pressure-sensitive pseudo-adhesive sheet provided with a pressure-sensitive adhesive layer, characterized in that the weight ratio of the core / shell layer is in the range of 20/1 to 1/5, which is a layer containing an agent as a basic component. Found that this can be achieved by:
【００１０】本発明において、ガラス転移点が−９０〜
５０℃の範囲にあるアクリル酸エステル（Ａ）からなる
コア部と、水溶性樹脂（Ｂ）からなるシェル層で構成さ
れた、コア／シェル型共重合体粒子を主成分として含む
アクリル酸エマルジョンを感圧接着剤として用いるの
は、接着成分であるアクリル樹脂エステルからなるコア
部の表面を水溶性樹脂からなるシェル層で覆うことによ
り、本発明の感圧接着剤を塗布した感圧疑似接着シート
が、ブロッキング等の発生を防止する、或いは感圧接着
剤の塗布層表面のべたつきを防止する機能を発現するた
めである。In the present invention, the glass transition point is -90 to
An acrylic acid emulsion containing a core / shell type copolymer particle as a main component, comprising a core portion made of an acrylic ester (A) at a temperature of 50 ° C. and a shell layer made of a water-soluble resin (B). The pressure-sensitive adhesive used as the pressure-sensitive adhesive is a pressure-sensitive pseudo-adhesive sheet coated with the pressure-sensitive adhesive of the present invention by covering the surface of a core portion made of an acrylic resin ester as an adhesive component with a shell layer made of a water-soluble resin. However, this is because a function of preventing the occurrence of blocking or the like or preventing the surface of the coated layer of the pressure-sensitive adhesive from being sticky is exhibited.
【００１１】本発明においては、ガラス転移点が−９０
〜５０℃の範囲にあるアクリル酸エステル（Ａ）からな
るコア部と、水溶性樹脂（Ｂ）からなるシェル層で構成
された、コア／シェル型共重合体粒子を主成分として含
むアクリル樹脂エマルジョン感圧接着剤に、微細粒子充
填剤を添加することによって、再剥離可能な疑似接着性
能をより効果的に発現させることができる。In the present invention, the glass transition point is -90.
Acrylic resin emulsion containing core / shell type copolymer particles as main components, composed of a core portion composed of an acrylate ester (A) at a temperature in the range of -50 ° C and a shell layer composed of a water-soluble resin (B). By adding the fine particle filler to the pressure-sensitive adhesive, the removable pseudo-adhesive performance can be more effectively developed.
【００１２】その機構は、微細粒子充填剤を使用するこ
とにより、微細粒子充填剤表面にコア／シェル状態のア
クリル樹脂を付着或いは吸蔵させ、微細粒子充填剤表面
に感圧接着剤成分が露出する構成を発現させ、表面に接
着成分を露出した微細粒子充填剤を含有する感圧接着剤
を塗布することで、塗布層の表面は、微細粒子充填剤に
よる凹凸が形成され、所定の圧力を加えた際に凹凸にず
れが生じ感圧接着剤層表面が平坦になり、また、感圧接
着剤成分のシェル層が壊れコア部の接着成分が感圧接着
剤表面に露出することにより、剥離可能に疑似接着す
る。The mechanism is to use a fine particle filler to adhere or occlude an acrylic resin in a core / shell state on the surface of the fine particle filler, thereby exposing the pressure-sensitive adhesive component on the surface of the fine particle filler. By applying a pressure-sensitive adhesive containing a fine particle filler having an adhesive component exposed on the surface, the surface of the coating layer is formed with irregularities due to the fine particle filler, and a predetermined pressure is applied. When the pressure-sensitive adhesive layer surface is flattened, the pressure-sensitive adhesive component shell layer is broken and the core adhesive component is exposed on the pressure-sensitive adhesive surface, allowing for peeling. Pseudo adhesion.
【００１３】この場合の疑似接着機構は、明らかではな
いが、高分子樹脂の自己拡散、双極子間力、水素結合、
或いは物理的な高分子樹脂と基材表面の絡み合い等の接
着機構によるものと考えられる。Although the pseudo-adhesion mechanism in this case is not clear, self-diffusion of polymer resin, dipole force, hydrogen bonding,
Alternatively, it is considered to be due to an adhesion mechanism such as entanglement between the physical polymer resin and the substrate surface.
【００１４】本発明において使用する上記微細粒子充填
剤は、親水性で平均粒子径は１〜２０μｍの範囲内であ
ることが好ましい。平均粒子径が、１μｍ未満では、微
細粒子充填剤が感圧接着剤の塗布層から脱落しやすくな
ったり、２０μｍ以上では、感圧接着剤塗布面の凸部の
突出が顕著になり充分な感圧接着力が発現されない等の
弊害を及ぼす恐れがある。The fine particle filler used in the present invention is preferably hydrophilic and has an average particle diameter in the range of 1 to 20 μm. When the average particle size is less than 1 μm, the fine particle filler tends to fall off from the pressure-sensitive adhesive applied layer, and when the average particle size is 20 μm or more, the protrusions of the pressure-sensitive adhesive applied surface become remarkable and sufficient feeling is obtained. There is a possibility that adverse effects such as a lack of pressure bonding force may be caused.
【００１５】また、上記微細粒子充填剤の平均粒子径と
は、通常、１個の粒子の大きさの平均値で示すが、例え
ば、シリカのような微細な粒子が集団を形成し、１個の
粒子のような挙動を示す場合には、この粒子の集団（２
次粒子）の平均の大きさを意味する。The average particle size of the fine particle filler is generally represented by an average value of the size of one particle. For example, fine particles such as silica form a group, and When the particles behave like particles, the particle population (2
(Next particle).
【００１６】本発明において使用する、ガラス転移点が
−９０〜５０℃の範囲にあるアクリル酸エステル（Ａ）
からなるコア部と、水溶性樹脂（Ｂ）からなるシェル層
で構成された、コア／シェル型共重合体粒子を主成分と
して含むアクリル樹脂エマルジョン感圧接着剤におい
て、コア／シェル層の重量比は、２０／１〜１／５の範
囲にあることが好ましい。重量比が２０／１以上、１／
５以下の範囲では、ブロッキング等が発生したり、或い
は充分な接着力が発現されない等の問題を及ぼす恐れが
ある。更に好ましくは、コア／シェル層の重量比が、２
０／１〜１／２の範囲にあることが特に、疑似接着性の
調整の容易さから好ましい。Acrylate (A) having a glass transition point in the range of -90 to 50 ° C. used in the present invention.
Weight ratio of the core / shell layer in an acrylic resin emulsion pressure-sensitive adhesive containing core / shell type copolymer particles as a main component, which is constituted by a core portion composed of: and a shell layer composed of a water-soluble resin (B). Is preferably in the range of 20/1 to 1/5. Weight ratio of 20/1 or more, 1 /
In the range of 5 or less, there is a possibility of causing problems such as occurrence of blocking and the like, or insufficient expression of adhesive strength. More preferably, the weight ratio of the core / shell layer is 2
It is particularly preferable that the ratio be in the range of 0/1 to 1/2, since the pseudo adhesion is easily adjusted.
【００１７】更に好ましくは、本発明においては、適度
な接着力を発現させるため、ガラス転移点が−８０〜２
０℃の範囲にあるアクリル酸エステルからなるコア部
と、ガラス転移点が７０℃以上の範囲にある水溶性樹脂
からなるシェル層で構成された、コア／シェル型共重合
体粒子を主成分として含むことが好ましい。More preferably, in the present invention, the glass transition point is in the range of -80 to 2 in order to develop a suitable adhesive strength.
Core / shell type copolymer particles composed of a core portion made of an acrylate ester in a temperature range of 0 ° C. and a shell layer made of a water-soluble resin having a glass transition temperature in a range of 70 ° C. or more. It is preferred to include.
【００１８】本発明において使用する感圧接着剤と微細
粒子充填剤の配合比は、コア／シェル型共重合体粒子を
主成分として含むアクリル樹脂エマルジョン１００重量
部に対し、微細粒子充填剤が５〜２００重量部含有され
てなることが好ましい。配合比が、５重量部未満では、
印刷或いは印字適性が不充分であったり、或いは２００
重量部以上では、微細粒子充填剤が感圧接着剤の塗布層
から剥がれやすくなったり或いは充分な接着力が発現さ
れない等の弊害を及ぼす恐れがある。The mixing ratio of the pressure-sensitive adhesive and the fine particle filler used in the present invention is such that the fine particle filler is 5 parts per 100 parts by weight of the acrylic resin emulsion containing core / shell type copolymer particles as a main component. Preferably, it is contained in an amount of from 200 to 200 parts by weight. If the compounding ratio is less than 5 parts by weight,
Insufficient printing or printability, or 200
When the amount is more than the weight part, the fine particle filler may be easily peeled off from the applied layer of the pressure-sensitive adhesive, or adverse effects such as insufficient adhesive strength may be exerted.
【００１９】従って、本発明においては、少なくとも５
〜２００重量部の微細粒子充填剤を感圧接着剤中に含有
させ使用することが好ましい。Therefore, in the present invention, at least 5
It is preferred to use the fine particle filler in the pressure-sensitive adhesive in an amount of up to 200 parts by weight.
【００２０】本発明の感圧接着剤に用いられる微細粒子
充填剤は、シリカ、シリカゲル、炭カル、カオリン、ク
レー、タルク、水酸化アルミニウム、酸化チタン、酸化
亜鉛、活性白土、澱粉粒子、セルロース粒子、スチレン
系樹脂粒子、アクリル系樹脂粒子、尿素樹脂粒子、マイ
クロカプセル、オイルカプセル、ポリエチレン、及び塩
化ビニル等の無機系或いは有機系の公知の微細粒子充填
剤の中から、適宜選択して使用することができる。ま
た、これらの微細粒子充填剤は、単独で用いても２種類
以上を併用しても良い。The fine particle filler used in the pressure-sensitive adhesive of the present invention includes silica, silica gel, charcoal, kaolin, clay, talc, aluminum hydroxide, titanium oxide, zinc oxide, activated clay, starch particles, and cellulose particles. Styrene-based resin particles, acrylic-based resin particles, urea-resin particles, microcapsules, oil capsules, polyethylene, and inorganic or organic known fine particle fillers such as vinyl chloride. be able to. These fine particle fillers may be used alone or in combination of two or more.
【００２１】粒径の異なる２種類以上の粒子を併用する
ことで、感圧接着剤塗布面の微細粒子充填剤による凹凸
を不連続なものにでき、感圧接着性の調整が容易にな
る。By using two or more kinds of particles having different particle sizes in combination, irregularities due to the fine particle filler on the pressure-sensitive adhesive applied surface can be made discontinuous, and the pressure-sensitive adhesive property can be easily adjusted.
【００２２】本発明においては、親水性の更に好ましく
は非熱可塑性の微細粒子充填剤を、コア／シェル型共重
合体粒子を主成分として含むアクリル樹脂エマルジョン
感圧接着剤中に含有させることが好ましい。In the present invention, a hydrophilic, more preferably non-thermoplastic, fine particle filler is contained in an acrylic resin emulsion pressure-sensitive adhesive containing core / shell type copolymer particles as a main component. preferable.
【００２３】本発明のコア／シェル型共重合体粒子を主
成分として含むアクリル樹脂エマルジョン感圧接着剤に
用いられる水溶性樹脂からなるシェル層は、ポリビニル
アルコール、カルボキシメチルセルロース、ポリビニル
ピロリドン、ポリアクリル酸、ポリアクリルアミド、エ
チレン−無水マレイン酸共重合体、スチレン−無水マレ
イン酸共重合体、スチレン−アクリル酸共重合体、メチ
ルビニルエーテル−無水マレイン酸共重合体、イソブチ
レン−無水マレイン酸共重合体等の公知の水溶性高分子
の中から、適宜選択して使用することができる。The shell layer made of a water-soluble resin used for the acrylic resin emulsion pressure-sensitive adhesive containing the core / shell type copolymer particles of the present invention as a main component comprises polyvinyl alcohol, carboxymethyl cellulose, polyvinyl pyrrolidone, polyacrylic acid. , Polyacrylamide, ethylene-maleic anhydride copolymer, styrene-maleic anhydride copolymer, styrene-acrylic acid copolymer, methyl vinyl ether-maleic anhydride copolymer, isobutylene-maleic anhydride copolymer, etc. It can be appropriately selected from known water-soluble polymers and used.
【００２４】また、これらの樹脂は、単独で用いても２
種類以上を併用しても良い。２種類以上の水溶性樹脂を
用いることで、ガラス転移点を７０℃以上の範囲に調整
することが容易になる。These resins may be used alone or
More than one type may be used in combination. By using two or more types of water-soluble resins, it becomes easy to adjust the glass transition point to a range of 70 ° C. or higher.
【００２５】本発明においては、耐ＵＶ性、耐熱性、印
刷適性、耐ブロッキング性等に優れた、スチレン−無水
マレイン酸共重合体を用いるのが品質の安定化に最も好
ましい。In the present invention, it is most preferable to use a styrene-maleic anhydride copolymer excellent in UV resistance, heat resistance, printability, blocking resistance, etc. for stabilizing the quality.
【００２６】感圧接着剤には、必要に応じて更に、界面
活性剤、消泡剤、増粘剤、耐水化剤、分散剤、紫外線吸
収剤、酸化防止剤、帯電防止剤、インク定着剤、染料定
着剤、蛍光染料、有色染料、滑剤、消臭剤、脱臭剤、抗
菌剤等の助剤を添加することもできる。The pressure-sensitive adhesive may further include a surfactant, an antifoaming agent, a thickener, a water-proofing agent, a dispersant, an ultraviolet absorber, an antioxidant, an antistatic agent, and an ink fixing agent, if necessary. Auxiliary agents such as a dye fixing agent, a fluorescent dye, a colored dye, a lubricant, a deodorant, a deodorant, and an antibacterial agent can also be added.
【００２７】本発明における感圧接着剤層の感圧接着性
は、該感圧接着剤層と被接着シートを重ね合わせ疑似接
着させた境界面のＴ型剥離強度が、３００ｍｍ／分、２
０℃、６５％ＲＨの環境下におけるＪＩＳＫ６８３３に
基づく測定で、１０ｇ／２５ｍｍ以上の剥離強度である
ことが好ましい、Ｔ型剥離強度が１０ｇ／２５ｍｍ以下
の場合には、使用中に自然剥離するという問題が発生す
るためである。The pressure-sensitive adhesive property of the pressure-sensitive adhesive layer in the present invention is such that the T-peel strength at the boundary surface where the pressure-sensitive adhesive layer and the sheet to be bonded are superimposed and adhered to each other is 300 mm / min.
It is preferable that the peel strength is 10 g / 25 mm or more in a measurement based on JIS K6833 in an environment of 0 ° C. and 65% RH. When the T-type peel strength is 10 g / 25 mm or less, it is said that it peels naturally during use. This is because a problem occurs.
【００２８】剥離強度の調整は、微細粒子の配合比、助
剤の添加のみにて調整することは困難であり、ガラス転
移点が−９０〜５０℃の範囲にあるアクリル酸エステル
（Ａ）からなるコア部と、水溶性樹脂（Ｂ）からなるシ
ェル層で構成された、コア／シェル型共重合体粒子を主
成分として含むアクリル樹脂エマルジョン感圧接着剤
の、コア／シェル層の重量比や、微細粒子の配合比、助
剤の添加を組合わせ調整することで容易になる。It is difficult to adjust the peel strength only by the compounding ratio of the fine particles and the addition of an auxiliary agent, and it is difficult to adjust the peel strength from the acrylic ester (A) having a glass transition point in the range of -90 to 50 ° C. Weight ratio of the core / shell layer of the acrylic resin emulsion pressure-sensitive adhesive containing the core / shell type copolymer particles as a main component, which is composed of a core portion and a shell layer made of the water-soluble resin (B). It becomes easy by adjusting the combination ratio of the fine particles and the addition of the auxiliary.
【００２９】本発明に用いられる基材としては、例え
ば、上質紙、中質紙、再生紙、アート紙、コート紙、微
塗工紙、合成紙、フィルム、ラミネート紙、金属蒸着紙
等が使用できる。As the base material used in the present invention, for example, high quality paper, medium quality paper, recycled paper, art paper, coated paper, lightly coated paper, synthetic paper, film, laminated paper, metallized paper and the like are used. it can.
【００３０】本発明における感圧接着剤の基材への塗布
は、ブレードコーター、エアナイフコーター、バーコー
ター、ロールコーター、グラビア印刷機、スクリーン印
刷機等の、従来公知の塗工機或いは印刷機を用いること
ができる。In the present invention, the pressure-sensitive adhesive is applied to the substrate by using a conventionally known coating machine or printing machine such as a blade coater, an air knife coater, a bar coater, a roll coater, a gravure printing machine or a screen printing machine. Can be used.
【００３１】また、本発明において、上記感圧接着剤の
基材に対する塗布量は、適正な接着力を発現させるた
め、通常２〜２０ｇ／ｍ2程度塗布するのが好ましい。In the present invention, the amount of the pressure-sensitive adhesive to be applied to the substrate is usually preferably about 2 to 20 g / m 2 in order to develop an appropriate adhesive force.
【００３２】[0032]
【発明の実施の形態】本発明の感圧接着剤は、ガラス転
移点が−９０〜５０℃の範囲にあるアクリル酸エステル
（Ａ）からなるコア部と、水溶性樹脂（Ｂ）からなるシ
ェル層で構成された、コア／シェル型共重合体粒子を主
成分として含むアクリル樹脂エマルジョン感圧接着剤
と、微細粒子充填剤を基本成分として含有し、これを基
本成分として助剤を適宜混合含有させることによって容
易に接着力を調整することができる。BEST MODE FOR CARRYING OUT THE INVENTION The pressure-sensitive adhesive of the present invention has a core portion composed of an acrylate (A) having a glass transition point in the range of -90 to 50 ° C., and a shell composed of a water-soluble resin (B). Acrylic resin emulsion pressure-sensitive adhesive composed mainly of core / shell type copolymer particles composed of layers and a fine particle filler as a basic component, and an auxiliary agent is appropriately mixed and contained with this as a basic component. By doing so, the adhesive force can be easily adjusted.
【００３３】本発明における感圧接着剤を、基材所定部
に塗布、乾燥させた後、感圧接着剤の塗布した部位と被
接着部位とを対向させ所定の加圧を加えることで、疑似
接着させることができる。また、感圧疑似接着剤の塗布
層表面は、印刷、印字等の情報記録適性が良好であるの
で、情報記録可能な感圧疑似接着シートとなる。After the pressure-sensitive adhesive of the present invention is applied to a predetermined portion of the base material and dried, the portion to which the pressure-sensitive adhesive is applied and the portion to be bonded are opposed to each other, and a predetermined pressure is applied to the pseudo-adhesive. Can be glued. Further, since the surface of the coating layer of the pressure-sensitive pseudo-adhesive has good information recording suitability such as printing and printing, it becomes a pressure-sensitive pseudo-adhesive sheet on which information can be recorded.
【００３４】[0034]
【実施例】以下、本発明を実施例によって更に詳述する
が、本発明はこれによって限定されるものではない。ま
た、特にことわらない限り、以下に記載する「部」及び
「％」は、それぞれ「重量部」及び「重量％」を意味す
る。EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto. Unless otherwise specified, “parts” and “%” described below mean “parts by weight” and “% by weight”, respectively.
【００３５】実施例１．接着剤基剤としてガラス転移点
が−５０℃のアクリル酸エステル（Ａ）からなるコア部
と、ガラス転移点が１１０℃のスチレン−無水マレイン
酸共重合体（Ｂ）からなるシェル層で構成された、コア
／シェル型共重合体粒子を主成分として含むアクリル樹
脂エマルジョン感圧接着剤基剤において、コア／シェル
層の重量比を２／１に調整した。これに平均粒子径７μ
ｍの合成シリカ（カープレックス８０Ｄ：塩野義製薬社
製）４０部を混ぜ合わせ、目的とする感圧接着剤を得
た。次に、この感圧接着剤組成物を、１２７．９ｇ／ｍ
2の上質紙に、塗布量が１０ｇ／ｍ2（乾燥重量）となる
ように塗布し、感圧疑似接着シートを得た。このシート
を用いて、下記のように接着力、印刷適性、ノンインパ
クトプリンティング適性（以下ＮＩＰ適性と表す。）、
ブロッキング性を評価した結果を、表１に示す。 Embodiment 1 The adhesive base is composed of a core portion composed of an acrylate (A) having a glass transition point of -50 ° C and a shell layer composed of a styrene-maleic anhydride copolymer (B) having a glass transition point of 110 ° C. In the acrylic resin emulsion pressure-sensitive adhesive base containing core / shell type copolymer particles as a main component, the weight ratio of the core / shell layer was adjusted to 2/1. This has an average particle size of 7μ
m of synthetic silica (Carplex 80D: Shionogi & Co., Ltd.) were mixed to obtain the desired pressure-sensitive adhesive. Next, this pressure-sensitive adhesive composition was added to 127.9 g / m2.
2 was applied to a high-quality paper at an application amount of 10 g / m 2 (dry weight) to obtain a pseudo pressure-sensitive adhesive sheet. Using this sheet, adhesive strength, printability, non-impact printing suitability (hereinafter referred to as NIP suitability),
Table 1 shows the results of evaluating the blocking property.
【００３６】接着力：試料を、２０℃、５０％ＲＨの環
境下に１２時間以上放置した後、メールシーラー（ＭＳ
ー９１００：大日本印刷社製）を用いて、ロールギャッ
プ１４（１４０μｍ）で加圧接着させ、その５分後にＴ
型剥離試験をＪＩＳＫ６８３３に基づき行った。Adhesion: After leaving the sample in an environment of 20 ° C. and 50% RH for 12 hours or more, a mail sealer (MS) was used.
-9100: manufactured by Dai Nippon Printing Co., Ltd.) and pressure-bonded with a roll gap of 14 (140 μm).
A mold release test was performed based on JIS K6833.
【００３７】ＵＶ劣化試験：ＵＶ照射機を用い、試料に
紫外線を所定時間強制照射し、それを２０℃、５０％Ｒ
Ｈの環境下に１２時間以上放置した後、接着力と同様に
評価を行った。UV deterioration test: The sample was forcibly irradiated with ultraviolet light for a predetermined time using a UV irradiator, and was irradiated at 20 ° C. and 50% R.
After being left in an environment of H for 12 hours or more, evaluation was performed in the same manner as in the case of the adhesive strength.
【００３８】印刷適性試験：オフセット印刷機を用い
て、疑似接着性シートの接着剤層上に印刷した際の、イ
ンキの滲み及び画像の再現性等を目視により観察し、評
価を行った。 ・画像再現性等が良好なもの→○ ・画像再現性等が良好でないもの→× ノンインパクトプリンティング適性試験：ノンインパク
トプリンター（Ｆ−６７６２Ｄ：富士通社製）を用い
て、画像の転写性等を目視により観察し、評価を行っ
た。 ・画像再現性や走行性が良好で、かすれ等のないもの→
○ ・画像再現性や走行性が悪く、かすれや汚れ等が発生し
たもの→× ブロッキング評価試験：試料を５０枚重ね、２０℃、６
５％ＲＨの環境下で所定荷重をかけ放置し、２４時間後
に手で剥がすことにより評価した。 ・ブロッキング等の発生が全くないもの→○ ・ブロッキング等の発生のないもの、または僅かに発生
するもの→△ ・ブロッキングしているもの→× 実施例２．コア／シェル層の重量比を１／１の重量比に
して、調整した以外は、実施例１と全く同様にして接着
剤基剤を調整した。これに平均粒子径７μｍの合成シリ
カ（カープレックス８０Ｄ：塩野義製薬株式会社製）５
０部を混ぜ合わせ、目的とする感圧疑似接着剤を得た。
得られた感圧接着剤を実施例１と全く同様にして上質紙
に塗布し、感圧疑似接着シートを得た。得られたシート
について、接着力、印刷適性、ＮＩＰ適性、ブロッキン
グ性を評価した結果を、表１に示す。Printing suitability test: Bleeding of the ink, reproducibility of the image, and the like when printed on the adhesive layer of the pseudo-adhesive sheet using an offset printing machine were visually evaluated. -Good image reproducibility, etc. → ○-Good image reproducibility, etc. → × Non-impact printing suitability test: Using a non-impact printer (F-6762D: manufactured by Fujitsu Ltd.) It was observed visually and evaluated.・ Those with good image reproducibility and running performance without blurring etc. →
・ Poor image reproducibility and running properties, with fading, dirt, etc. → × Blocking evaluation test: 50 samples stacked, 20 ° C, 6
The evaluation was performed by leaving a predetermined load in an environment of 5% RH and then peeling it off by hand 24 hours later. -No occurrence of blocking or the like at all---No occurrence of blocking or the like or slightly attributable occurrence---Blocking-> Example 2 An adhesive base was prepared in exactly the same manner as in Example 1 except that the weight ratio of the core / shell layer was adjusted to 1/1 by weight. Synthetic silica having an average particle diameter of 7 μm (Carplex 80D: manufactured by Shionogi & Co., Ltd.) 5
0 parts were mixed to obtain a target pressure-sensitive pseudo-adhesive.
The obtained pressure-sensitive adhesive was applied to high quality paper in exactly the same manner as in Example 1 to obtain a pressure-sensitive pseudo-adhesive sheet. Table 1 shows the results of evaluating the adhesive strength, printability, NIP suitability, and blocking property of the obtained sheet.
【００３９】比較例１．接着剤基剤としてアクリル酸エ
ステルエマルジョン（ガラス転移点が−５０℃）１００
部（乾燥重量）に、スチレン−無水マレイン酸共重合体
エマルジョン５０部（乾燥重量）を混合し、アクリル樹
脂エマルジョン接着剤を調整した。平均粒子径７μｍの
合成シリカ（カープレックス８０Ｄ：塩野義製薬株式会
社製）４０部を混ぜ合わせ、目的とする感圧疑似接着剤
を得た。得られた感圧接着剤を実施例１と全く同様にし
て上質紙に塗布し、感圧疑似接着シートを得た。得られ
たシートについて、接着力、印刷適性、ＮＩＰ適性、ブ
ロッキング性を評価した結果は、表１に示した通りであ
る。Comparative Example 1 Acrylic ester emulsion (glass transition point is -50 ° C) 100 as adhesive base
To 50 parts (dry weight) of a styrene-maleic anhydride copolymer emulsion were mixed with the same (dry weight) to prepare an acrylic resin emulsion adhesive. Forty parts of synthetic silica (Carplex 80D: manufactured by Shionogi & Co., Ltd.) having an average particle diameter of 7 μm were mixed to obtain a target pressure-sensitive pseudo-adhesive. The obtained pressure-sensitive adhesive was applied to high quality paper in exactly the same manner as in Example 1 to obtain a pressure-sensitive pseudo-adhesive sheet. With respect to the obtained sheet, the results of evaluating the adhesive strength, printability, NIP suitability, and blocking property are as shown in Table 1.
【００４０】比較例２．接着剤基剤としてアクリル酸エ
ステル（ガラス転移点が−５０℃）１００部（乾燥重
量）に水溶性樹脂エマルジョンを添加せず、平均粒子径
７μｍの合成シリカ（カープレックス８０Ｄ：塩野義製
薬株式会社製）４０部を混ぜ合わせ、目的とする感圧疑
似接着剤を得た。得られた感圧接着剤を実施例１と全く
同様にして上質紙に塗布し、感圧疑似接着シートを得
た。得られたシートについて、接着力、印刷適性、ＮＩ
Ｐ適性、ブロッキング性を評価した結果を、表１に示
す。Comparative Example 2 Synthetic silica (Carplex 80D: Shionogi Pharmaceutical Co., Ltd.) having an average particle size of 7 μm without adding a water-soluble resin emulsion to 100 parts (dry weight) of an acrylate ester (glass transition point is −50 ° C.) as an adhesive base (Commercially available) were mixed to obtain the desired pressure-sensitive pseudo-adhesive. The obtained pressure-sensitive adhesive was applied to high quality paper in exactly the same manner as in Example 1 to obtain a pressure-sensitive pseudo-adhesive sheet. About the obtained sheet, adhesive strength, printability, NI
Table 1 shows the results of evaluating the suitability for P and the blocking properties.
【００４１】[0041]
【表１】 [Table 1]
【００４２】[0042]
【発明の効果】本発明の感圧疑似接着シートは、安定し
た接着力を有すると共に、接着剤層表面のべたつきを抑
えているため、ブロッキング等を起こさず、その上印刷
適性にも優れ、また、接着する被接着材を選ばないの
で、接着する被接着材の選択の幅が増え応用の範囲が広
がる。更に、本発明の感圧疑似接着シートは、感熱紙、
インクジェット用紙、熱転写紙用紙、ノ−カーボン紙、
コート紙、上質紙等として、また、これらの用紙と組み
合わせたり、裏面に粘着剤等を塗布することも可能であ
り、様々の基材と組み合わせて使用することができる。The pressure-sensitive pseudo-adhesive sheet of the present invention has a stable adhesive force and suppresses the stickiness of the surface of the adhesive layer, so that it does not cause blocking or the like, and has excellent printability. Since the material to be bonded is not selected, the range of selection of the material to be bonded is increased and the range of application is expanded. Furthermore, the pressure-sensitive pseudo-adhesive sheet of the present invention is a thermal paper,
Inkjet paper, thermal transfer paper, no-carbon paper,
It can be used as coated paper, woodfree paper, or the like, or in combination with these papers, or can be coated with an adhesive or the like on the back surface, and can be used in combination with various base materials.
【図1】配送伝票の説明図である。FIG. 1 is an explanatory diagram of a delivery slip.
【図2】図１のＡ−Ａ′線断面図である。FIG. 2 is a sectional view taken along line AA ′ of FIG. 1.
１…配送伝票、２…基材、３…疑似接着剤、４…配送
部、５…受領部、６…ミシン目、７…感圧疑似接着シー
ト。DESCRIPTION OF SYMBOLS 1 ... Delivery slip, 2 ... Base material, 3 ... Pseudo-adhesive, 4 ... Delivery part, 5 ... Receiving part, 6 ... Perforation, 7 ... Pressure-sensitive pseudo-adhesive sheet.
Claims (1)
は印刷することができる感圧接着剤層を設けた感圧疑似
接着シートにおいて、前記感圧接着剤層が、ガラス転移
点が−９０〜５０℃の範囲にあるアクリル酸エステル
（Ａ）からなるコア部と、水溶性樹脂（Ｂ）からなるシ
ェル層で構成された、コア／シェル型共重合体粒子を主
成分として含むアクリル樹脂エマルジョン感圧接着剤
と、微細粒子充填剤を基本成分として含有する層であっ
て、コア／シェル層の重量比が２０／１〜１／５の範囲
にあることを特徴とする感圧疑似接着シート。1. A pressure-sensitive pseudo-adhesive sheet provided with a pressure-sensitive adhesive layer capable of printing or printing information on at least one surface of a support, wherein the pressure-sensitive adhesive layer has a glass transition point of -90. Acrylic resin emulsion containing core / shell type copolymer particles as main components, composed of a core portion composed of an acrylate ester (A) at a temperature in the range of -50 ° C and a shell layer composed of a water-soluble resin (B). A layer containing a pressure-sensitive adhesive and a fine particle filler as basic components, wherein the weight ratio of the core / shell layer is in the range of 20/1 to 1/5. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16416798A JPH11335632A (en) | 1998-05-27 | 1998-05-27 | Pressure-sensitive pseudoadhesive sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16416798A JPH11335632A (en) | 1998-05-27 | 1998-05-27 | Pressure-sensitive pseudoadhesive sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11335632A true JPH11335632A (en) | 1999-12-07 |
Family
ID=15788011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16416798A Pending JPH11335632A (en) | 1998-05-27 | 1998-05-27 | Pressure-sensitive pseudoadhesive sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11335632A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005153317A (en) * | 2003-11-26 | 2005-06-16 | Sato Corp | Distribution and transportation slip |
| JP2005255958A (en) * | 2004-03-15 | 2005-09-22 | Toppan Forms Co Ltd | Microcapsulated ultraviolet-curing pressure-sensitive adhesive and information carrying sheet using the same |
| JP2007217666A (en) * | 2006-01-10 | 2007-08-30 | Rohm & Haas Co | Cold seal adhesive |
-
1998
- 1998-05-27 JP JP16416798A patent/JPH11335632A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005153317A (en) * | 2003-11-26 | 2005-06-16 | Sato Corp | Distribution and transportation slip |
| JP2005255958A (en) * | 2004-03-15 | 2005-09-22 | Toppan Forms Co Ltd | Microcapsulated ultraviolet-curing pressure-sensitive adhesive and information carrying sheet using the same |
| JP2007217666A (en) * | 2006-01-10 | 2007-08-30 | Rohm & Haas Co | Cold seal adhesive |
| US7964057B2 (en) | 2006-01-10 | 2011-06-21 | Rohm And Haas Company | Cold seal adhesive |
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