JPH0711229A - Heat-sensitive tacky agent and heat-sensitive adhesive sheet - Google Patents

Heat-sensitive tacky agent and heat-sensitive adhesive sheet

Info

Publication number
JPH0711229A
JPH0711229A JP15496893A JP15496893A JPH0711229A JP H0711229 A JPH0711229 A JP H0711229A JP 15496893 A JP15496893 A JP 15496893A JP 15496893 A JP15496893 A JP 15496893A JP H0711229 A JPH0711229 A JP H0711229A
Authority
JP
Japan
Prior art keywords
heat
sensitive adhesive
tacky agent
tackifier
thermoplastic resin
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
Application number
JP15496893A
Other languages
Japanese (ja)
Other versions
JP3047680B2 (en
Inventor
Keiichi Sato
馨一 佐藤
Makoto Kameyama
真 亀山
Masako Yamamoto
雅子 山本
Hiroyuki Iida
博之 飯田
Akira Kikuchi
明 菊池
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Ink Mfg Co Ltd
Original Assignee
Toyo Ink Mfg Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Ink Mfg Co Ltd filed Critical Toyo Ink Mfg Co Ltd
Priority to JP5154968A priority Critical patent/JP3047680B2/en
Publication of JPH0711229A publication Critical patent/JPH0711229A/en
Application granted granted Critical
Publication of JP3047680B2 publication Critical patent/JP3047680B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Adhesives Or Adhesive Processes (AREA)

Abstract

PURPOSE:To provide the subject tacky agent causing no crack or debonding of the tacky agent layer therefrom, excellent in film formability and coating film transparency, useful for adhesive sheets etc., comprising a thermoplastic resin, tackifier, crystalline plasticizer, specific organic solvent and water. CONSTITUTION:The objective tacky agent comprising (A) a thermoplastic resin such as a polyacrylic ester, (B) a tackifier such as a terpene resin, (C) a crystalline plasticizer such as diphenyl phthalate, (D) an organic solvent 7-11 in solubility parameter such as an aromatic hydrocarbon and (E) water. The other objective heat-sensitive adhesive sheet can be obtained by coating a base material with this tacky agent.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、常温では非粘着性であ
るが加熱により粘着性が発現し、しかも粘着性発現後、
加熱源を取り去っても暫くの間、粘着性が持続する感熱
性粘着剤および感熱性粘着シートに関する。
BACKGROUND OF THE INVENTION The present invention is non-tacky at room temperature but develops tackiness upon heating, and
The present invention relates to a heat-sensitive adhesive and a heat-sensitive adhesive sheet, which retain their adhesiveness for a while even after removing the heating source.

【0002】[0002]

【従来の技術】従来の感熱性粘着剤は、粘着性発現後の
粘着性を持続させるため、公知のディレードタック型粘
着剤に代表されるような水分散型粘着剤として使用され
る場合が多い。例えば、「接着便覧」(第12版、昭和55
年、高分子刊行会発行)に記載されているように、組成
として熱可塑性樹脂、粘着付与剤および結晶性可塑剤を
基本骨格としている。熱可塑性樹脂は粘着力・接着力の
根源となるものであり、結晶性可塑剤は常温では固体で
あるため樹脂に可塑性を与えず、加熱により溶融して樹
脂を膨潤あるいは軟化させるため、常温では非粘着性の
粘着剤に、加熱することによって粘着性を発現させる作
用をする。この際、粘着付与剤が存在していると粘着性
が一層顕著に現れ、実用特性が向上する。
2. Description of the Related Art Conventional heat-sensitive adhesives are often used as water-dispersible pressure-sensitive adhesives as typified by known delayed tack-type adhesives in order to maintain the adhesiveness after the pressure-sensitive adhesiveness is developed. . For example, "Adhesive Handbook" (12th Edition, Showa 55)
, Published by Kobunshi Shuppankai), the composition has a basic structure of a thermoplastic resin, a tackifier and a crystalline plasticizer. Thermoplastic resins are the source of tackiness and adhesiveness, and crystalline plasticizers are solid at room temperature, so they do not impart plasticity to the resin, and they melt and swell or soften when heated, so at room temperature A non-tacky pressure-sensitive adhesive acts to develop tackiness by heating. At this time, when the tackifier is present, the tackiness becomes more remarkable, and the practical properties are improved.

【0003】しかしながら、水分散型粘着剤の場合、熱
可塑性樹脂、粘着付与剤および結晶性可塑剤の種類によ
っては、塗膜とした際、造膜性が欠如する問題点があっ
た。さらに位置決めマークの感知等、塗膜自体の透明性
が要求される場合、熱可塑性樹脂、粘着付与剤および結
晶性可塑剤相互の相溶性の選択性の幅が狭いため、粘着
剤としての設計上、物性面で制約を受ける問題点があっ
た。造膜性を向上させるためには、ガラス転移温度(T
g)の低い、やわらかい熱可塑性樹脂が有効であるが、
粘着剤を基材に塗布して粘着シートにした場合に耐ブロ
ッキング性が悪くなる。
However, in the case of the water-dispersed pressure-sensitive adhesive, there is a problem that the film-forming property is lacked when formed into a coating film, depending on the types of the thermoplastic resin, tackifier and crystalline plasticizer. Furthermore, when transparency of the coating film itself is required, such as for detecting positioning marks, the compatibility of the thermoplastic resin, tackifier and crystalline plasticizer with each other is narrow. However, there was a problem that it was restricted in terms of physical properties. The glass transition temperature (T
A soft thermoplastic resin with a low g) is effective,
When a pressure-sensitive adhesive is applied to a substrate to form a pressure-sensitive adhesive sheet, the blocking resistance becomes poor.

【0004】そのため、耐ブロッキング性の改善を目的
として、エチレン−酢酸ビニル共重合体、粘着付与樹
脂、結晶性可塑剤およびワックスを配合してなる感熱接
着剤が、特公昭62-21835号公報に開示されている。しか
し、常温での粘着性を抑制する目的で添加されているワ
ックスのみでは、耐ブロッキング性が不十分であり、ワ
ックスの添加だけでは造膜性の向上は期待できない。さ
らに耐ブロッキング性を向上させるために、シート上に
感熱性粘着剤を塗工する際、塗工面の平滑度をある数値
範囲に入れる方法が特開昭 63-172784号公報に開示され
ているが、塗工面の平滑度をこの記載通りにしても、造
膜性は向上しない。
Therefore, for the purpose of improving the blocking resistance, a heat-sensitive adhesive containing an ethylene-vinyl acetate copolymer, a tackifying resin, a crystalline plasticizer and a wax is disclosed in Japanese Patent Publication No. 62-21835. It is disclosed. However, the blocking resistance is insufficient only with the wax added for the purpose of suppressing the tackiness at room temperature, and improvement of the film-forming property cannot be expected only by adding the wax. Further, in order to improve the blocking resistance, when coating a heat-sensitive adhesive on a sheet, a method of setting the smoothness of the coated surface within a certain numerical range is disclosed in JP-A-63-172784. Even if the smoothness of the coated surface is as described above, the film forming property is not improved.

【0005】さらに、塗膜自体の透明性を向上させるた
めには、熱可塑性樹脂、粘着付与剤および結晶性可塑剤
相互の相溶性が問題となり、感熱性粘着剤で使用される
ような有機添加物、例えば特開平2-282050号公報に開示
されているような通常の有機添加物では、透明性の向上
は期待できない。
Further, in order to improve the transparency of the coating film itself, the compatibility between the thermoplastic resin, the tackifier and the crystalline plasticizer becomes a problem, and an organic additive such as that used in a heat-sensitive adhesive is required. The improvement of transparency cannot be expected in the case of ordinary organic additives such as those disclosed in JP-A-2-282050.

【0006】すなわち、従来の感熱性粘着剤は、造膜性
を向上させるために、ガラス転移温度の低い、やわらか
い熱可塑性樹脂を使用しているが、基材に塗布して粘着
シートにした場合に耐ブロッキング性が悪くなるという
欠点があった。そのため、造膜性の許容範囲の下限まで
ガラス転移温度を上昇させた熱可塑性樹脂を使用する等
の様々な耐ブロッキング性の改善が行なわれているが、
耐ブロッキング性の改善を行なうと接着力等の接着特性
が低下する等の欠点を有していた。
That is, the conventional heat-sensitive adhesive uses a soft thermoplastic resin having a low glass transition temperature in order to improve the film-forming property, but when it is applied to a substrate to form an adhesive sheet. However, there is a drawback that the blocking resistance becomes poor. Therefore, although various blocking resistance improvements such as using a thermoplastic resin whose glass transition temperature is raised to the lower limit of the permissible range of film-forming properties have been made,
When the blocking resistance is improved, there is a defect that the adhesive properties such as the adhesive force are deteriorated.

【0007】[0007]

【発明が解決しようとする課題】本発明者らは、前記欠
点を克服すべく鋭意研究を行なった結果、溶解度パラメ
ータが7以上11以下の有機溶剤を含有させることによ
り、造膜性および塗膜自体の透明性に優れた水性感熱性
粘着剤が得られることを見出し、本発明に至った。
DISCLOSURE OF THE INVENTION As a result of intensive studies to overcome the above-mentioned drawbacks, the present inventors have found that the inclusion of an organic solvent having a solubility parameter of 7 or more and 11 or less results in film-forming property and coating film. The present invention has been completed by finding that an aqueous heat-sensitive adhesive having excellent transparency can be obtained.

【0008】[0008]

【課題を解決するための手段】すなわち本発明は、熱可
塑性樹脂、粘着付与剤、結晶性可塑剤、溶解度パラメー
タが7以上11以下の有機溶剤および水を含有する感熱性
粘着剤および該感熱性粘着剤を基材に塗布してなる感熱
性粘着シートを提供する。
That is, the present invention provides a heat-sensitive adhesive containing a thermoplastic resin, a tackifier, a crystalline plasticizer, an organic solvent having a solubility parameter of 7 or more and 11 or less, and water, and the heat-sensitive adhesive. Provided is a heat-sensitive adhesive sheet obtained by applying an adhesive to a substrate.

【0009】溶解度パラメータが7以上11以下、好まし
くは8以上10以下の有機溶剤は、通常、感熱性粘着剤で
使用される熱可塑性樹脂、粘着付与剤あるいは結晶性可
塑剤の溶解度パラメータと近い値を有する。そのため、
この溶剤を感熱性粘着剤中に含有させると、熱可塑性樹
脂、粘着付与剤あるいは結晶性可塑剤を一部溶解あるい
は膨潤させ、造膜性および塗膜自体の透明性を向上させ
ていると推定される。溶解度パラメータが7以上11以下
の有機溶剤は、感熱性粘着剤中に10重量%以下の範囲内
で含有させることが好ましい。有機溶剤の含有量が10重
量%を超えると、感熱性粘着剤を基材に塗布した直後に
粘着性が発現してしまう。
The organic solvent having a solubility parameter of 7 or more and 11 or less, preferably 8 or more and 10 or less is a value close to the solubility parameter of the thermoplastic resin, tackifier or crystalline plasticizer usually used in the heat-sensitive adhesive. Have. for that reason,
It is presumed that when this solvent is contained in the heat-sensitive adhesive, it partially dissolves or swells the thermoplastic resin, tackifier or crystalline plasticizer, and improves the film-forming property and the transparency of the coating film itself. To be done. The organic solvent having a solubility parameter of 7 or more and 11 or less is preferably contained in the heat-sensitive adhesive within the range of 10% by weight or less. When the content of the organic solvent exceeds 10% by weight, the tackiness is exhibited immediately after applying the heat-sensitive adhesive to the substrate.

【0010】溶解度パラメータが7以上11以下の有機溶
剤としては、例えば、n-ヘキサン、n-ヘプタン、エチル
エーテル、n-オクタン、メチルシクロヘキサン、シクロ
ヘキサン、n-酢酸アミル、酢酸イソブチル、メチルイソ
プロピルケトン、メチルイソブチルケトン、アミルベン
ゼン、酢酸ブチル、四塩化炭素、エチルベンゼン、セロ
ソルブアセテート、p-キシレン、m-キシレン、ギ酸アミ
ル、メチルプロピルケトン、ブチルセロソルブ、トルエ
ン、ブチルカルビトール、o-キシレン、酢酸エチル、ブ
チラール、ベンゼン、テトラヒドロフラン、ジアセトン
アルコール、トリクロロエチレン、メチルエチルケト
ン、テトラクロロエチレン、クロロホルム、ギ酸エチ
ル、モノクロルベンゼン、テトラクロロエタン、酢酸メ
チル、イソアミルアルコール、塩化メチレン、二塩化エ
チレン、アセトン、セロソルブ、二臭化エチレン、二硫
化炭素、ギ酸メチル、ジオキサン、アセトフェノン、ピ
リジン等が挙げられる。
Examples of the organic solvent having a solubility parameter of 7 or more and 11 or less include n-hexane, n-heptane, ethyl ether, n-octane, methylcyclohexane, cyclohexane, n-amyl acetate, isobutyl acetate, methyl isopropyl ketone, Methyl isobutyl ketone, amylbenzene, butyl acetate, carbon tetrachloride, ethylbenzene, cellosolve acetate, p-xylene, m-xylene, amyl formate, methylpropylketone, butylcellosolve, toluene, butylcarbitol, o-xylene, ethyl acetate, butyral , Benzene, tetrahydrofuran, diacetone alcohol, trichloroethylene, methyl ethyl ketone, tetrachloroethylene, chloroform, ethyl formate, monochlorobenzene, tetrachloroethane, methyl acetate, isoamyl alcohol , Methylene chloride, ethylene dichloride, acetone, cellosolve, ethylene dibromide, carbon disulfide, methyl formate, dioxane, acetophenone, pyridine and the like.

【0011】これらの中では、溶解度パラメータが8以
上10以下の有機溶剤が好ましく、その中でもアミルベン
ゼン、エチルベンゼン、o-キシレン、p-キシレン、m-キ
シレン、トルエン、ベンゼン、モノクロルベンゼン等の
芳香族系炭化水素が、特に好ましい。
Among these, organic solvents having a solubility parameter of 8 or more and 10 or less are preferable, and among them, aromatic solvents such as amylbenzene, ethylbenzene, o-xylene, p-xylene, m-xylene, toluene, benzene and monochlorobenzene. Hydrocarbons are particularly preferred.

【0012】本発明において、溶解度パラメータ(S
P)は、分子間力の大きさを表すもので、「プラスチッ
ク加工技術便覧」(第6版、昭和54年、日刊工業新聞社
発行)に記載されているように、下記(1)式で定義さ
れる。 (SP)2 =ΔE/V=(ΔH−RT)/V =d(ΔH−RT)/M ・・・・・・・・(1) ただし、ΔEは蒸発エネルギー(cal/mol)、Vはモル容
積(cm3/mol)、ΔHは蒸発潜熱(cal/mol)、Rは気体定
数(cal/mol・K)、dは密度(g/cm3)、Mはグラム分子量
(g/mol)、Tは絶対温度である。
In the present invention, the solubility parameter (S
P) represents the magnitude of the intermolecular force. As described in "Plastic Processing Technology Handbook" (6th edition, 1979, published by Nikkan Kogyo Shimbun), the following (1) formula is used. Is defined. (SP) 2 = ΔE / V = (ΔH-RT) / V = d (ΔH-RT) / M (1) where ΔE is the evaporation energy (cal / mol) and V is Molar volume (cm 3 / mol), ΔH is latent heat of vaporization (cal / mol), R is gas constant (cal / mol · K), d is density (g / cm 3 ), M is gram molecular weight (g / mol) , T is the absolute temperature.

【0013】結晶性可塑剤としては、例えばフタル酸ジ
フェニル、フタル酸ジヘキシル、フタル酸ジシクロヘキ
シル、フタル酸ジヒドロアビエチル、イソフタル酸ジメ
チル、安息香酸スクロース、二安息香酸エチレングリコ
ール、三安息香酸トリメチロールエタン、三安息香酸グ
リセリド、四安息香酸ペンタエリトリット、八酢酸スク
ロース、クエン酸トリシクロヘキシル、N-シクロヘキシ
ル-p- トルエンスルホンアミド等が挙げられるが、フタ
ル酸ジシクロヘキシルが好ましい。
Examples of crystalline plasticizers include diphenyl phthalate, dihexyl phthalate, dicyclohexyl phthalate, dihydroabietyl phthalate, dimethyl isophthalate, sucrose benzoate, ethylene glycol dibenzoate, trimethylolethane tribenzoate, Examples thereof include tribenzoic acid glyceride, tetrabenzoic acid pentaerythritol, sucrose octaacetate, tricyclohexyl citrate, and N-cyclohexyl-p-toluenesulfonamide, with dicyclohexyl phthalate being preferred.

【0014】熱可塑性樹脂としては、ガラス転移温度が
50℃未満のものが好ましく、例えばアクリル酸エステ
ル、スチレン−アクリル酸エステル、スチレン−ブタジ
エン、エチレン−酢酸ビニル、酢酸ビニル、酢酸ビニル
−アクリル酸エステル、エチレン−塩化ビニル、エチレ
ン−アクリル酸エステル、エチレン−アクリル酸、ポリ
ブタジエン、ウレタン、スチレン−イソプレンブロック
ポリマー等が挙げられる。
The thermoplastic resin has a glass transition temperature of
Those having a temperature of less than 50 ° C. are preferable, for example, acrylic acid ester, styrene-acrylic acid ester, styrene-butadiene, ethylene-vinyl acetate, vinyl acetate, vinyl acetate-acrylic acid ester, ethylene-vinyl chloride, ethylene-acrylic acid ester, ethylene. -Acrylic acid, polybutadiene, urethane, styrene-isoprene block polymers and the like.

【0015】さらに、粘着剤の粘着性能を向上させる粘
着付与剤としては、例えばテルペン樹脂、脂肪族系石油
樹脂、芳香族系石油樹脂、クマロン−インデン樹脂、ス
チレン系樹脂、フェノール樹脂、テルペン−フェノール
樹脂、ロジン誘導体(ロジン、重合ロジン、水添ロジン
およびそれらのグリセリン、ペンタエリスリトール等と
のエステル、樹脂酸ダイマー等)が挙げられる。
Further, as the tackifier for improving the tack performance of the tackifier, for example, terpene resin, aliphatic petroleum resin, aromatic petroleum resin, coumarone-indene resin, styrene resin, phenol resin, terpene-phenol. Examples thereof include resins and rosin derivatives (rosin, polymerized rosin, hydrogenated rosin and their esters with glycerin, pentaerythritol, etc., resin acid dimers, etc.).

【0016】前記結晶性可塑剤、熱可塑性樹脂および粘
着付与剤は、1種あるいは2種類以上の混合物で使用す
ることができる。本発明の感熱性粘着剤には、この他
に、フィラー等も本発明の目的を妨げない範囲で添加可
能であり、例えば、酸化チタン、アルミナ、カオリン、
タルク等の無機物や、パラフィン、天然ワックス、合成
ワックス、天然油脂等の有機物、樹脂粉末等を使用する
ことができる。さらに、必要に応じて分散剤や消泡剤、
増粘剤等を使用することもできる。本発明の感熱性粘着
剤は、基材に塗布し、感熱性粘着シートとすることもで
きる。
The above-mentioned crystalline plasticizer, thermoplastic resin and tackifier can be used alone or as a mixture of two or more kinds. In addition to the above, a filler and the like can be added to the heat-sensitive adhesive of the present invention within a range not hindering the object of the present invention, and examples thereof include titanium oxide, alumina, kaolin, and the like.
Inorganic substances such as talc, organic substances such as paraffin, natural wax, synthetic wax, natural fats and oils, and resin powders can be used. Furthermore, if necessary, a dispersant or an antifoaming agent,
Thickeners and the like can also be used. The heat-sensitive adhesive of the present invention can be applied to a substrate to give a heat-sensitive adhesive sheet.

【0017】[0017]

【実施例】以下、実施例を挙げて、本発明を具体的に説
明する。ただし、本発明の範囲は、以下の実施例により
何等限定されるものではない。例中、部とは重量部を、
%とは重量%をそれぞれ表わす。 〔実施例1〜6および比較例1〜4〕表1に示す組成で
混合器により混合を行ない、粘着剤を調製した。なお、
実施例6においては、有機溶剤を予めポリエーテル溶液
と混合したのち、他の成分と混合して粘着剤を調製し
た。得られた粘着剤を、予め直径1cm の黒丸を印刷した
片面アート紙上に、塗布量が20g/m2となるように直接塗
布し、40℃で2分間乾燥した。乾燥後の状態では粘着性
は確認できなかった。塗工物について、耐屈曲性、透明
性、接着力および耐ブロッキング性の評価を行なった結
果を表1に示す。
EXAMPLES The present invention will be specifically described below with reference to examples. However, the scope of the present invention is not limited to the following examples. In the examples, “part” means “part by weight”,
% Represents% by weight. Examples 1 to 6 and Comparative Examples 1 to 4 Adhesives were prepared by mixing the compositions shown in Table 1 with a mixer. In addition,
In Example 6, an organic solvent was mixed with a polyether solution in advance and then mixed with other components to prepare an adhesive. The obtained pressure-sensitive adhesive was directly applied onto a single-sided art paper on which black circles having a diameter of 1 cm were previously printed so that the application amount was 20 g / m 2, and dried at 40 ° C. for 2 minutes. No tackiness could be confirmed in the dried state. Table 1 shows the results of the evaluation of bending resistance, transparency, adhesive strength and blocking resistance of the coated article.

【0018】[0018]

【表1】 *1 エチレン−酢酸ビニル共重合体 *2 スチレン−ブタジエン共重合体[Table 1] * 1 Ethylene-vinyl acetate copolymer * 2 Styrene-butadiene copolymer

【0019】塗工物の耐屈曲性、透明性、接着力および
耐ブロッキング性は、以下の方法によって評価した。 耐屈曲性 ;JIS K-5400に準じて、屈曲試験器によ
り、耐屈曲性を試験し、以下の基準で判定した。 ◎・・・・・・割れ、剥がれなし。 ○・・・・・・割れはあるが、剥がれなし。 ×・・・・・・剥がれあり。
The bending resistance, transparency, adhesive strength and blocking resistance of the coated product were evaluated by the following methods. Bending resistance: Bending resistance was tested by a bending tester according to JIS K-5400, and judged according to the following criteria. ◎ ・ ・ ・ ・ ・ ・ No cracking or peeling. ○ ・ ・ ・ ・ There is a crack, but there is no peeling. × ・ ・ ・ ・ Peeled.

【0020】透 明 性 ;塗膜の透明性を以下の基準
で目視判定した。 ◎・・・・・・黒丸部において塗膜の白濁が確認できない。 ○・・・・・・黒丸部において塗膜の白濁が多少確認できる。 ×・・・・・・黒丸部において塗膜の白濁が確認できる。 接 着 力 ;塗工物を 120℃で25秒間加熱し粘着性を
発現させた後、速やかにステンレス鋼鈑に貼り付け、JI
S K-6848に準じて180度剥離により接着強度を測定し、
以下の基準で判定した。ただし糊付け部は 100mmとし
た。 ◎・・・・・・800g/25mm 以上。 ○・・・・・・800g/25mm 以上、600g/25mm 未満。 ×・・・・・・600g/25mm 未満。
Transparency: The transparency of the coating film was visually evaluated according to the following criteria. ◎ ・ ・ ・ ・ ・ ・ No cloudiness of the coating film can be confirmed in the black circles. ∙ · Some cloudiness of the coating film can be seen in the black circles. ×: ・ The cloudiness of the coating film can be confirmed in the black circles. Adhesion: After heating the coated product at 120 ° C for 25 seconds to develop its adhesiveness, it is immediately attached to a stainless steel plate and
Measure the adhesive strength by peeling 180 degrees according to S K-6848,
It was judged according to the following criteria. However, the glued part was 100 mm. ◎ ・ ・ ・ ・ ・ ・ 800g / 25mm or more. ○ ・ ・ ・ ・ ・ ・ 800g / 25mm or more, less than 600g / 25mm. × ・ ・ ・ ・ ・ ・ 600g / 25mm or less.

【0021】耐ブロッキング性;粘着剤塗工物に 1000g
/cm2の荷重をかけて、55℃に1時間保存後に剥離し、以
下の基準で判定した。 ◎・・・・・・剥離抵抗なし。 ○・・・・・・剥離時に若干音がする。 ×・・・・・・剥離時に紙の繊維を引っ張る。
Blocking resistance; 1000 g for adhesive coating
A load of / cm 2 was applied, the film was stored at 55 ° C. for 1 hour, then peeled off, and judged according to the following criteria. ◎ ・ ・ ・ ・ ・ ・ No peeling resistance. ○ ・ ・ ・ ・ ・ ・ A slight noise is heard when peeling. × ・ ・ ・ ・ ・ ・ Pull fiber of paper when peeling.

【0022】[0022]

【発明の効果】本発明により、従来の感熱性粘着剤と比
較して、熱可塑性樹脂、粘着付与剤および結晶性可塑剤
の種類によらず、塗膜を形成した場合の造膜性および塗
膜自体の透明性が良好で、接着力も実用特性を満足する
ことができる感熱性粘着剤が得られるようになった。本
発明の感熱性粘着剤を基材に塗布してなる粘着シート
は、粘着剤層の造膜性が良好なため、粘着シートを折り
曲げたときに粘着剤層の割れ、剥がれが起こらない。ま
た、粘着剤層が透明なため、基材に予め印刷された位置
決めマーク等がよく見える。
According to the present invention, compared with the conventional heat-sensitive adhesive, the film-forming property and the coating property when a coating film is formed are obtained regardless of the types of the thermoplastic resin, tackifier and crystalline plasticizer. It has become possible to obtain a heat-sensitive adhesive having good transparency of the film itself and satisfying practical properties in adhesive strength. The pressure-sensitive adhesive sheet obtained by coating the substrate with the heat-sensitive pressure-sensitive adhesive of the present invention has good film-forming property of the pressure-sensitive adhesive layer, so that the pressure-sensitive adhesive layer does not crack or peel off when the pressure-sensitive adhesive sheet is bent. Further, since the pressure-sensitive adhesive layer is transparent, the positioning marks and the like printed in advance on the substrate can be seen well.

フロントページの続き (72)発明者 飯田 博之 東京都中央区京橋二丁目3番13号東洋イン キ製造株式会社内 (72)発明者 菊池 明 東京都中央区京橋二丁目3番13号東洋イン キ製造株式会社内Front page continued (72) Inventor Hiroyuki Iida 2-33-1 Kyobashi, Chuo-ku, Tokyo Toyo Inki Manufacturing Co., Ltd. (72) Inventor Akira Kikuchi 2-3-13 Kyobashi, Chuo-ku, Tokyo Toyo Inki Manufacturing Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 熱可塑性樹脂、粘着付与剤、結晶性可塑
剤、溶解度パラメータが7以上11以下の有機溶剤および
水を含有することを特徴とする感熱性粘着剤。
1. A heat-sensitive adhesive which comprises a thermoplastic resin, a tackifier, a crystalline plasticizer, an organic solvent having a solubility parameter of 7 or more and 11 or less, and water.
【請求項2】 有機溶剤が芳香族系炭化水素であること
を特徴とする請求項1記載の感熱性粘着剤。
2. The heat-sensitive adhesive according to claim 1, wherein the organic solvent is an aromatic hydrocarbon.
【請求項3】 請求項1または2記載の感熱性粘着剤を
基材に塗布してなる感熱性粘着シート。
3. A heat-sensitive adhesive sheet obtained by applying the heat-sensitive adhesive according to claim 1 or 2 to a substrate.
JP5154968A 1993-06-25 1993-06-25 Method for producing heat-sensitive adhesive and heat-sensitive adhesive sheet Expired - Fee Related JP3047680B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5154968A JP3047680B2 (en) 1993-06-25 1993-06-25 Method for producing heat-sensitive adhesive and heat-sensitive adhesive sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5154968A JP3047680B2 (en) 1993-06-25 1993-06-25 Method for producing heat-sensitive adhesive and heat-sensitive adhesive sheet

Publications (2)

Publication Number Publication Date
JPH0711229A true JPH0711229A (en) 1995-01-13
JP3047680B2 JP3047680B2 (en) 2000-05-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3047680B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09263740A (en) * 1996-03-28 1997-10-07 Ricoh Co Ltd Heat-sensitive delayed-tack adhesive
EP1122086A1 (en) * 2000-02-04 2001-08-08 Fujipla Inc. Cover film for protection of a print and method for production thereof
CN100395299C (en) * 2006-07-19 2008-06-18 李广臣 Green waterproof milk white polymer paint
WO2008141748A2 (en) * 2007-05-15 2008-11-27 Societe De Technologie Michelin Plasticizing system and rubber tyre composition including said system
CN107201198A (en) * 2017-06-27 2017-09-26 阜南县力韦包装材料有限公司 A kind of good heat resistant type transparent adhesive tape of adhesive property

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09263740A (en) * 1996-03-28 1997-10-07 Ricoh Co Ltd Heat-sensitive delayed-tack adhesive
EP1122086A1 (en) * 2000-02-04 2001-08-08 Fujipla Inc. Cover film for protection of a print and method for production thereof
CN100395299C (en) * 2006-07-19 2008-06-18 李广臣 Green waterproof milk white polymer paint
WO2008141748A2 (en) * 2007-05-15 2008-11-27 Societe De Technologie Michelin Plasticizing system and rubber tyre composition including said system
WO2008141748A3 (en) * 2007-05-15 2009-01-15 Michelin Soc Tech Plasticizing system and rubber tyre composition including said system
CN107201198A (en) * 2017-06-27 2017-09-26 阜南县力韦包装材料有限公司 A kind of good heat resistant type transparent adhesive tape of adhesive property

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Publication number Publication date
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