JP2007254515A - Pressure-sensitive adhesive sheet for application to skin - Google Patents

Pressure-sensitive adhesive sheet for application to skin Download PDF

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JP2007254515A
JP2007254515A JP2006078138A JP2006078138A JP2007254515A JP 2007254515 A JP2007254515 A JP 2007254515A JP 2006078138 A JP2006078138 A JP 2006078138A JP 2006078138 A JP2006078138 A JP 2006078138A JP 2007254515 A JP2007254515 A JP 2007254515A
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adhesive
pressure
sensitive adhesive
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Kenichi Ishikawa
賢一 石川
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Lintec Corp
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Lintec Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive sheet preventing occurrence of turning up during application and scarcely causing pain during peeling. <P>SOLUTION: The pressure-sensitive adhesive sheet 10 is composed by nipping a pressure-sensitive adhesive layer 12 between a substrate sheet 11 and a release agent layer 13. In the pressure-sensitive adhesive layer 12, strong pressure-sensitive adhesive parts 12A and weak pressure-sensitive adhesive parts 12B are provided alternately in a stripe form when viewed from the side of the release agent layer 13 and laminated. A probe tack value of the strong pressure-sensitive adhesive parts 12A is 3,000-6,000 mN/5 mmϕ and the probe tack value of the weak pressure-sensitive adhesive parts 12B is 600-2,000 mN/5 mmϕ. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、救急絆創膏、固定シート等に使用され、部分的に粘着力の強弱を持たせた皮膚貼付用粘着シートに関する。   The present invention relates to a pressure-sensitive adhesive sheet for skin application, which is used for an emergency adhesive bandage, a fixing sheet, and the like, and has a partial strength.

救急絆創膏、固定シート等の医療用途において、ガーゼや膏体等を皮膚に貼り付けるために、貼り付け面に粘着剤層が設けられた粘着シートが広く用いられている。粘着シートは、皮膚に強固に接着することができる強粘着タイプと、比較的弱い力で皮膚に接着する弱粘着タイプに大別され、その用途に応じて適宜使い分けられている。   In medical applications such as emergency bandages and fixed sheets, pressure-sensitive adhesive sheets with a pressure-sensitive adhesive layer provided on the affixing surface are widely used for adhering gauze and plaster on the skin. The pressure-sensitive adhesive sheets are roughly classified into a strong pressure-sensitive adhesive type that can be firmly adhered to the skin and a weak pressure-sensitive adhesive type that adheres to the skin with a relatively weak force, and are appropriately used depending on the application.

強粘着タイプの粘着シートは、皮膚に強固に接着でき、かつ外部からの水分及び微生物の浸入を阻止することができるので、例えば創面保護が重要である場合や、激しい運動が伴う場合に好ましく使用されるが、その粘着力が強力であるがゆえに剥離時に痛みを伴う場合が多い。一方、弱粘着タイプは、粘着力が弱いため、剥離時の痛みは少ないものの、上記強粘着タイプの利点を得ることができない。   The strong adhesive type adhesive sheet can be firmly adhered to the skin and can prevent the ingress of moisture and microorganisms from the outside, so it is preferably used when wound protection is important or when intense exercise is involved However, because of its strong adhesive strength, it is often painful at the time of peeling. On the other hand, the weak adhesive type has a weak adhesive force, so that the pain at the time of peeling is small, but the advantages of the strong adhesive type cannot be obtained.

粘着シートに上記両タイプの利点を持たせるために、例えば特許文献1に記載されるように、粘着シートにおいて粘着剤を部分的に塗工し、塗工部分と、未塗工部分とがストライプ状に設けられる場合がある。この粘着シートは、無塗工部分が設けられることにより、粘着剤の粘着力を強固にしても、剥離時の痛みを低減することができるが、無塗工部分を有するため、水や微生物の浸入を充分に防止することができない。また、貼付される際、無塗工部分が端部にある場合、粘着シートのめくれが発生しやすくなる。   In order to give the adhesive sheet the advantages of both types described above, for example, as described in Patent Document 1, the adhesive is partially coated on the adhesive sheet, and the coated portion and the uncoated portion are striped. In some cases. This pressure-sensitive adhesive sheet is provided with an uncoated portion, so that even when the pressure-sensitive adhesive has a strong adhesive force, it can reduce pain during peeling. Infiltration cannot be sufficiently prevented. Further, when the non-coated part is present at the end when being applied, the adhesive sheet is likely to be turned over.

また、従来の粘着シートには、2種の粘着剤が適宜積層され、粘着層に一定の分布を持たせたものが知られている。例えば特許文献2に記載されるように、剥離材上にストライプ、格子、水玉等にパターニングされた第2の粘着剤層が形成され、その第2の粘着剤層及び一部露出している剥離材の上に第1の粘着剤層が積層されたものが知られている。   Further, a conventional pressure-sensitive adhesive sheet is known in which two types of pressure-sensitive adhesives are appropriately laminated and the pressure-sensitive adhesive layer has a certain distribution. For example, as described in Patent Document 2, a second pressure-sensitive adhesive layer patterned into stripes, lattices, polka dots, etc. is formed on a release material, and the second pressure-sensitive adhesive layer and a partly exposed peeling A material in which a first pressure-sensitive adhesive layer is laminated on a material is known.

この粘着シートによれば、異なる種類の粘着剤から成る第1及び第2の粘着剤層が、粘着シートの貼付面に設けられるので、粘着性能をそれほど低下させずに、異なる被着体に粘着シートを貼付することができる。   According to this pressure-sensitive adhesive sheet, the first and second pressure-sensitive adhesive layers made of different types of pressure-sensitive adhesives are provided on the sticking surface of the pressure-sensitive adhesive sheet. A sheet can be attached.

さらには、例えば特許文献3に記載されるように、剥離シートと支持シートの間に設けられた粘着層において、水性粘着剤層と油性粘着剤層が交互にストライプ状に設けられた粘着シートも知られている。
特公平7−71657号公報 特開2001−207137号公報 特許第2744482号公報
Furthermore, as described in Patent Document 3, for example, in the adhesive layer provided between the release sheet and the support sheet, an adhesive sheet in which an aqueous adhesive layer and an oily adhesive layer are alternately provided in a stripe shape is also provided. Are known.
Japanese Patent Publication No. 7-71657 JP 2001-207137 A Japanese Patent No. 2744482

しかし、特許文献2に記載された粘着シートは、第1及び第2の粘着層の粘着力の調整が全くなされておらず、強粘着タイプ及び弱粘着タイプ両方の特性を併せ持つことはできない。   However, the pressure-sensitive adhesive sheet described in Patent Document 2 has no adjustment of the adhesive strength of the first and second pressure-sensitive adhesive layers, and cannot have the characteristics of both strong and weak adhesive types.

また、特許文献3に記載された粘着シートは、粘着層に水性粘着剤層が設けられているため、水の浸入を充分に防止することができない。さらには水性粘着剤の皮膚面に対する粘着力は著しく低いので、貼付される際に水性粘着剤層が貼付面の端部にある場合、粘着シートの端部がめくれやすいという欠点もある。   Moreover, since the adhesive sheet described in patent document 3 is provided with the water-based adhesive layer in the adhesive layer, it cannot fully prevent permeation of water. Furthermore, since the adhesive strength of the aqueous adhesive to the skin surface is remarkably low, when the aqueous adhesive layer is at the end of the application surface when applied, there is also a drawback that the end of the adhesive sheet is easily turned over.

そこで、本発明は上記問題点に鑑みて成されたものであり、皮膚に強固に接着でき、外部からの水分及び微生物の浸入を充分に阻止することができるとともに、剥離時の痛みを少なくすることができる皮膚貼付用粘着シートを提供することを目的とする。   Therefore, the present invention has been made in view of the above problems, and can be firmly adhered to the skin, can sufficiently prevent moisture and microorganisms from entering from the outside, and reduce pain during peeling. An object is to provide a pressure-sensitive adhesive sheet for skin application.

本発明係る皮膚貼付用粘着シートは、基材シート上に皮膚に貼付するための粘着剤層が設けられている皮膚貼付用粘着シートであって、粘着剤層は、皮膚に接する貼付面に少なくとも一部が設けられるとともに、親油性粘着物質から形成される強粘着部及び弱粘着部を有し、強粘着部のプローブタック値が、弱粘着部より高いことを特徴とする。   The pressure-sensitive adhesive sheet for skin application according to the present invention is a pressure-sensitive adhesive sheet for skin application provided with a pressure-sensitive adhesive layer for application to the skin on a base material sheet, and the pressure-sensitive adhesive layer is at least on the application surface in contact with the skin. A part is provided, and it has a strong adhesive part and a weak adhesive part formed from a lipophilic adhesive substance, and the probe tack value of the strong adhesive part is higher than that of the weak adhesive part.

強粘着部のプローブタック値が3000〜6000mN/5mmφであるとともに、弱粘着部のプローブタック値が600〜2000mN/5mmφであることが好ましい。なお、プローブタック値とは、JIS Z 0237(参考)に従ってプローブタックテスターにて測定される、直径5mmの円柱プローブを試験片の粘着面から引きはがすのに要する力をいう。   The probe tack value of the strong adhesive portion is preferably 3000 to 6000 mN / 5 mmφ, and the probe tack value of the weak adhesive portion is preferably 600 to 2000 mN / 5 mmφ. The probe tack value refers to the force required to peel a 5 mm diameter cylindrical probe from the adhesive surface of a test piece, measured with a probe tack tester according to JIS Z 0237 (reference).

粘着剤層に複数の孔が設けられることが好ましく、これにより粘着シートの通気性を高めることができる。この場合、粘着剤層は、例えば水または水と吸水性高分子物質が分散された粘着剤液が塗工後、乾燥されることにより成形されることが好ましい。   It is preferable that a plurality of holes are provided in the pressure-sensitive adhesive layer, whereby the breathability of the pressure-sensitive adhesive sheet can be improved. In this case, the pressure-sensitive adhesive layer is preferably formed by, for example, applying water or a pressure-sensitive adhesive liquid in which water and a water-absorbing polymer substance are dispersed and then drying.

強粘着部及び弱粘着部のいずれか一方の粘着部に複数の孔が設けられるとともに、他方の粘着部がエマルション系粘着剤であることが好ましい。これにより、一方の粘着部に複数の孔が設けられるとともに、他方の粘着部は糊切れ性良く塗工されるので、粘着シートの通気性が確保できるとともに、他方の粘着部を複雑な形状のパターンにコートすることができる。この場合、一方の粘着部は例えば強粘着部である。   It is preferable that a plurality of holes are provided in one of the strong adhesive portion and the weak adhesive portion, and the other adhesive portion is an emulsion-based adhesive. As a result, a plurality of holes are provided in one adhesive portion, and the other adhesive portion is coated with good adhesiveness, so that the air permeability of the adhesive sheet can be ensured and the other adhesive portion has a complicated shape. The pattern can be coated. In this case, one adhesive part is a strong adhesive part, for example.

本発明においては、粘着剤層に粘着力の異なる強粘着部と弱粘着部を設けることにより、貼付時のめくれを低減し、かつ剥離時の痛みを抑えることができるとともに、粘着剤層に親油性粘着物質を用いることにより粘着シート内への水の浸入を防止することができる。   In the present invention, by providing the pressure-sensitive adhesive layer with a strong pressure-sensitive adhesive portion and a weak pressure-sensitive adhesive portion having different adhesive forces, it is possible to reduce turning at the time of sticking and to suppress pain at the time of peeling, and to control the pressure-sensitive adhesive layer. By using an oil-based adhesive substance, it is possible to prevent water from entering the adhesive sheet.

図1、2は、本願発明の第1の実施形態に係る粘着シートを模式的に示す図である。図1に示すように、粘着シート10は、基材シート11及び剥離材層13の間に粘着剤層12が挟持されて構成される。粘着シート10は皮膚に貼付されて使用される粘着シートであって、剥離材層13が剥離された後、粘着剤層12の図1における上面が、貼付面として皮膚等に貼り付けられて使用される。   1 and 2 are views schematically showing an adhesive sheet according to the first embodiment of the present invention. As shown in FIG. 1, the pressure-sensitive adhesive sheet 10 is configured by sandwiching a pressure-sensitive adhesive layer 12 between a base material sheet 11 and a release material layer 13. The pressure-sensitive adhesive sheet 10 is a pressure-sensitive adhesive sheet that is used by being attached to the skin. After the release material layer 13 is peeled off, the upper surface of the pressure-sensitive adhesive layer 12 in FIG. Is done.

基材シート11としては、例えば軟質ポリ塩化ビニル、ポリエチレン、ポリウレタンなどのプラスチックフィルム、及びこれらを含んだ多層積層シートのいずれかが用いられる。基材シート11は、防水性が高く、透湿性が良好なシートであることが好ましく、ポリウレタンシートが好適に用いられる。   As the base material sheet 11, for example, any of a plastic film such as soft polyvinyl chloride, polyethylene, and polyurethane and a multilayer laminated sheet including these are used. The base sheet 11 is preferably a sheet having high waterproofness and good moisture permeability, and a polyurethane sheet is suitably used.

剥離材層13は、剥離紙、樹脂フィルム等の剥離シートから成り、剥離材層13の粘着剤層12が積層される面は、シリコーン樹脂、アルキッド樹脂、シリコーン変性アルキッド樹脂等の剥離剤が塗布等されることにより剥離処理されている。   The release material layer 13 is made of a release sheet such as release paper or a resin film, and a release agent such as silicone resin, alkyd resin, or silicone-modified alkyd resin is applied to the surface of the release material layer 13 on which the adhesive layer 12 is laminated. It is stripped by being equalized.

粘着剤層12には、強粘着部12A及び弱粘着部12Bが、図2のように貼付面側から見るとストライプ状に交互に積層され、これにより強粘着部12A及び弱粘着部12Bそれぞれの少なくとも一部は貼付面に設けられ、粘着シート10が貼付される際、それぞれ皮膚に接することとなる。   In the adhesive layer 12, strong adhesive portions 12A and weak adhesive portions 12B are alternately stacked in a stripe shape when viewed from the side of the sticking surface as shown in FIG. 2, whereby each of the strong adhesive portions 12A and the weak adhesive portions 12B is laminated. At least a part is provided on the application surface, and when the adhesive sheet 10 is applied, it contacts the skin.

強粘着部12A、弱粘着部12Bは、イソプレンゴム、スチレン−イソプレン−スチレン共重合体、スチレン−ブタジエン−スチレン共重合体、若しくはスチレン−ブタジエンゴム等の合成ゴム系、天然ゴム系、ポリアクリル酸エステル等のアクリル系、ポリイソブチレン系、又はシリコーン系等の親油性粘着物質によって形成される。強粘着部12A、弱粘着部12Bに親油性粘着物質が用いられることにより、貼付されるとき、粘着シート10内への水分の浸入を有効に防止することができる。   The strong adhesive part 12A and the weak adhesive part 12B are synthetic rubbers such as isoprene rubber, styrene-isoprene-styrene copolymer, styrene-butadiene-styrene copolymer, or styrene-butadiene rubber, natural rubber, polyacrylic acid It is formed of a lipophilic adhesive substance such as an acrylic such as ester, a polyisobutylene, or a silicone. By using a lipophilic adhesive substance for the strong adhesive portion 12A and the weak adhesive portion 12B, it is possible to effectively prevent moisture from entering into the adhesive sheet 10 when it is affixed.

強粘着部12Aのプローブタック値は、例えば3000〜6000mN/5mmφであるとともに、弱粘着部のプローブタック値は600〜2000mN/5mmφであり、強粘着部12Aのプローブタック値が弱粘着部12Bより高い。   The probe tack value of the strong adhesive portion 12A is, for example, 3000 to 6000 mN / 5 mmφ, the probe tack value of the weak adhesive portion is 600 to 2000 mN / 5 mmφ, and the probe tack value of the strong adhesive portion 12A is lower than that of the weak adhesive portion 12B. high.

強粘着部12Aのプローブタック値が3000mN/5mmφ未満である場合、粘着剤層12の粘着力が充分ではなくなるので、貼付時のめくれが発生しやすくなる。一方6000mN/5mmφより大きい場合、粘着力が強すぎるので、剥離時の痛みが発生しやすくなるので、強粘着部12Aのプローブタック値は上記範囲が好ましい。また、弱粘着部12Bのプローブタック値が600mN/5mmφ未満である場合、弱粘着部12Bの粘着力が弱くなるので、貼付時に弱粘着部12Bが端部にあると、その端部にめくれが発生しやすくなる。また2000mN/5mmφより大きい場合、粘着剤層12において粘着力の弱い部分がなくなり、剥離時の痛みが発生しやすくなるので、弱粘着部12Bのプローブタック値は上記範囲が好ましい。   When the probe tack value of the strong adhesive portion 12A is less than 3000 mN / 5 mmφ, the adhesive force of the pressure-sensitive adhesive layer 12 is not sufficient, so that turning at the time of application is likely to occur. On the other hand, when it is larger than 6000 mN / 5 mmφ, the adhesive force is too strong, and pain at the time of peeling tends to occur. Therefore, the probe tack value of the strong adhesive portion 12A is preferably in the above range. In addition, when the probe tack value of the weak adhesive portion 12B is less than 600 mN / 5 mmφ, the adhesive strength of the weak adhesive portion 12B is weakened. Therefore, if the weak adhesive portion 12B is at the end at the time of application, the end is turned up. It tends to occur. Further, when it is larger than 2000 mN / 5 mmφ, the adhesive layer 12 does not have a weakly adhesive portion, and pain at the time of peeling tends to occur. Therefore, the probe tack value of the weakly adhesive portion 12B is preferably within the above range.

本実施形態では、強粘着部12A、弱粘着部12Bは、それぞれ第1及び第2の粘着剤液が塗工された後、乾燥されることによって成形される。第1及び第2の粘着剤液それぞれは、上記親油性粘着物質に、架橋剤、粘着付与剤、可塑剤、酸化防止剤、保存剤等が適宜配合され、これらが有機溶媒に溶解(または分散)されて有機溶媒溶液として構成されても良いし、これらが水に分散されてエマルション系粘着剤として構成されても良い。   In the present embodiment, the strong adhesive portion 12A and the weak adhesive portion 12B are formed by drying after the first and second adhesive liquids are applied, respectively. Each of the first and second pressure-sensitive adhesive liquids is appropriately mixed with a lipophilic pressure-sensitive adhesive material, such as a crosslinking agent, a tackifier, a plasticizer, an antioxidant, a preservative, and the like, and these are dissolved (or dispersed) in an organic solvent. ) To form an organic solvent solution, or these may be dispersed in water to form an emulsion-based pressure-sensitive adhesive.

なお、粘着剤がエマルション系粘着剤である場合でも、粘着剤には上述したように親油性粘着物質が使用されるので、粘着剤は乾燥による水分除去後水溶性を失い、粘着シート10内への水分の浸入を有効に防止することができる。   Even when the pressure-sensitive adhesive is an emulsion-based pressure-sensitive adhesive, since the lipophilic pressure-sensitive adhesive material is used for the pressure-sensitive adhesive, the pressure-sensitive adhesive loses water solubility after moisture removal by drying, and enters the pressure-sensitive adhesive sheet 10. It is possible to effectively prevent moisture from entering.

また、強粘着部12A及び弱粘着部12Bは、親油性粘着物質に同一のものを用い、配合される架橋剤の種類、架橋剤の配合量、粘着付与剤の種類、粘着付与剤の配合量、可塑剤の種類、可塑剤の配合量等を異ならせることにより、プローブタック値が上述の数値範囲内になるように設定しても良いし、第1及び第2の粘着剤液の親油性粘着物質を異ならせることにより上述の数値範囲内になるように設定しても良い。さらには、強粘着部12A及び弱粘着部12Bの配合を同一にするとともに、その塗布量を異ならせることにより上述の数値範囲内になるようにしても良い。   The strong adhesive part 12A and the weak adhesive part 12B use the same lipophilic adhesive substance, the kind of the crosslinking agent to be blended, the blending quantity of the crosslinking agent, the kind of tackifier, and the blending quantity of the tackifier The probe tack value may be set to be within the above-mentioned numerical range by varying the kind of plasticizer, the blending amount of the plasticizer, etc., or the lipophilicity of the first and second adhesive liquids You may set so that it may become in the above-mentioned numerical range by varying an adhesive substance. Further, the strong adhesive portion 12A and the weak adhesive portion 12B may have the same composition and may be within the above numerical range by varying the amount of application.

次に、本実施形態の粘着シート10の製造方法について説明する。本実施形態では、まず上記第1及び第2の粘着剤液が、剥離シートの剥離処理された面に、交互にストライプ塗工され、その後、これらが乾燥されることにより、粘着剤液の有機溶剤、水分が除去され、これにより強粘着部12Aと弱粘着部12Bから成る粘着剤層12が剥離材層13の上に成形される。ストライプ塗工は、ロールコート、ダイコート、又はスクリーン印刷(例えばロータリースクリーン)などの公知の塗工方法で行われる。粘着剤層12の上には、さらに基材シート11が貼り合わせられ、これにより粘着シート10が成形される。   Next, the manufacturing method of the adhesive sheet 10 of this embodiment is demonstrated. In the present embodiment, first, the first and second pressure-sensitive adhesive liquids are alternately stripe-coated on the release-treated surface of the release sheet, and then dried, whereby the organic liquid of the pressure-sensitive adhesive liquid is used. The solvent and moisture are removed, whereby the pressure-sensitive adhesive layer 12 composed of the strong adhesion portion 12A and the weak adhesion portion 12B is formed on the release material layer 13. The stripe coating is performed by a known coating method such as roll coating, die coating, or screen printing (for example, rotary screen). On the pressure-sensitive adhesive layer 12, a base material sheet 11 is further bonded, whereby the pressure-sensitive adhesive sheet 10 is formed.

上述したストライプ塗工がダイコートで行われる場合、好ましくは多層ダイヘッドが用いられ、第1及び第2の粘着剤液が同時に塗布され、剥離材層の上に強粘着部12Aと弱粘着部12Bが成形される。またロールコーターが用いられる場合、例えば糊留め部に仕切り板が複数設けられて、第1及び第2の粘着剤液が、交互にストライプ状に供給されることにより、粘着剤層12が成形される。   When the stripe coating described above is performed by die coating, a multilayer die head is preferably used, and the first and second adhesive liquids are applied simultaneously, and the strong adhesive portion 12A and the weak adhesive portion 12B are formed on the release material layer. Molded. When a roll coater is used, for example, the adhesive layer 12 is formed by providing a plurality of partition plates in the adhesive part and supplying the first and second adhesive liquids alternately in a stripe shape. The

以上のように本実施形態では、粘着シート10の貼付面に強粘着部12Aが設けられ、この強粘着部12Aが皮膚に強固に接着するので、貼付時のめくれ等が適切に防止される。また、貼付面には、強粘着部12Aと共に弱粘着部12Bも設けられるので、剥離時の痛みを軽減することができる。さらに、強粘着部12A、及び弱粘着部12Bは親油性粘着物質から形成されるので、貼付されるとき、粘着シート10内部への水分の浸入も有効に防止することができる。   As described above, in the present embodiment, the strong adhesive portion 12A is provided on the application surface of the adhesive sheet 10, and the strong adhesive portion 12A adheres firmly to the skin, so that turning-up or the like at the time of application is appropriately prevented. Moreover, since the weak adhesion part 12B is provided with the strong adhesion part 12A on the sticking surface, the pain at the time of peeling can be reduced. Furthermore, since the strong adhesive part 12A and the weak adhesive part 12B are formed from a lipophilic adhesive substance, it is possible to effectively prevent moisture from entering the adhesive sheet 10 when being applied.

なお、本実施形態では、粘着シート10は、上述した製造方法以外の方法で製造されても良く、例えば以下のように製造されても良い。まず剥離処理された2枚の剥離シート(第1及び第2の剥離シート)が用意され、第1の剥離シートの剥離処理された面に、第1の粘着剤液が未塗工部分と塗工部分が交互になるようにストライプ状に塗工された後、これが乾燥され強粘着部12Aが形成される。次いで強粘着部12Aの上に基材シートが貼り付けられる。第2の剥離シートの剥離処理された面には、第2の粘着剤液が、無塗工部分と塗工部分が交互にストライプ状に塗工され、乾燥された後、弱粘着部12Bが第2の剥離シート上に形成される。   In addition, in this embodiment, the adhesive sheet 10 may be manufactured by methods other than the manufacturing method mentioned above, for example, may be manufactured as follows. First, two release sheets (first and second release sheets) that have been subjected to a release treatment are prepared, and the first adhesive liquid and the uncoated portion are applied to the release-treated surface of the first release sheet. After being applied in stripes so that the work portions are alternated, this is dried to form the strong adhesive portion 12A. Subsequently, a base material sheet is affixed on the strong adhesion part 12A. On the surface of the second release sheet that has been subjected to the release treatment, the second adhesive liquid is applied in stripes alternately with the non-coated portion and the coated portion, and dried, and then the weak adhesive portion 12B is formed. It is formed on the second release sheet.

次いで、強粘着部12Aから第1の剥離シートが剥離された後、強粘着部12Aの積層された面が、第2の剥離シートの弱粘着部12Bが積層された面に貼り付けられる。このとき、基材シート上に形成された強粘着部12Aの無塗工部分に、弱粘着部12Bの塗工部分が嵌り込められ、これにより図1,2に記載されるように、強粘着部12Aと弱粘着部12Bが交互にストライプ状に形成された粘着剤層12が成形される。   Next, after the first release sheet is peeled from the strong adhesive portion 12A, the surface on which the strong adhesive portion 12A is laminated is attached to the surface on which the weak adhesive portion 12B of the second release sheet is laminated. At this time, the coating portion of the weak adhesive portion 12B is fitted into the non-coated portion of the strong adhesive portion 12A formed on the base sheet, and as described in FIGS. The pressure-sensitive adhesive layer 12 in which the portions 12A and the weak adhesive portions 12B are alternately formed in a stripe shape is formed.

なお、この製造方法においては、製造工程において剥離される第1の剥離シートに弱粘着部12Bが成形され、第2の剥離シート上に強粘着部12Aが成形されても良い。   In this manufacturing method, the weak adhesive portion 12B may be formed on the first release sheet that is peeled off in the manufacturing process, and the strong adhesive portion 12A may be formed on the second release sheet.

図3、4は、本発明の第2の実施形態に係る粘着シートを模式的に示す図である。第2の実施形態において、第1の実施形態と異なる点は、粘着剤層12の積層構造のみである。以下、第2の実施形態について、第1の実施形態との相違点を中心に説明する。なお、以下の説明において、第1の実施形態と同一部材については同一の符号を付し、その部材の詳細な説明は省略する。   3 and 4 are views schematically showing an adhesive sheet according to the second embodiment of the present invention. In the second embodiment, the difference from the first embodiment is only the laminated structure of the pressure-sensitive adhesive layer 12. Hereinafter, the second embodiment will be described focusing on the differences from the first embodiment. In the following description, the same members as those in the first embodiment are denoted by the same reference numerals, and detailed description of the members is omitted.

第2の実施形態では、図3に示すように、粘着シート10は第1の実施形態と同様に、基材シート11と、剥離材層13の間に粘着剤層12が挟持されて構成される。   In the second embodiment, as shown in FIG. 3, the pressure-sensitive adhesive sheet 10 is configured by sandwiching the pressure-sensitive adhesive layer 12 between the base material sheet 11 and the release material layer 13 as in the first embodiment. The

粘着剤層12には、第1の実施形態と同様に、強粘着部12Aと、弱粘着部12Bが設けられる。弱粘着部12Bは剥離材層13の図中下面に積層してストライプ状に形成されるとともに、強粘着部12Aは、弱粘着部12Bの下面、及び剥離材層13下面の弱粘着部12Bが積層されていない部分に積層して形成される。これにより、第2の実施形態においても、皮膚に接する貼付面(すなわち、粘着剤層12の上面)に強粘着部12A及び弱粘着部12Bの両方が設けられる。   As in the first embodiment, the adhesive layer 12 is provided with a strong adhesive portion 12A and a weak adhesive portion 12B. The weak adhesive portion 12B is laminated on the lower surface in the drawing of the release material layer 13 and formed in a stripe shape. The strong adhesive portion 12A includes the lower surface of the weak adhesive portion 12B and the weak adhesive portion 12B on the lower surface of the release material layer 13. It is formed by laminating on the non-laminated part. Thereby, also in 2nd Embodiment, both the strong adhesion part 12A and the weak adhesion part 12B are provided in the sticking surface (namely, upper surface of the adhesive layer 12) which touches skin.

本実施形態においては、弱粘着部12Bはストライプ状に形成されなくても良く、他のパターンに形成されても良い。例えば弱粘着部12Bは図5、6に示すように水玉状に形成されても良い。この場合も、強粘着部12Aは弱粘着部12Bの下面、及び剥離材層13下面の弱粘着部12Bが積層されていない部分に積層して形成される。   In the present embodiment, the weak adhesive portion 12B may not be formed in a stripe shape, and may be formed in another pattern. For example, the weak adhesive portion 12B may be formed in a polka dot shape as shown in FIGS. Also in this case, the strong adhesive portion 12A is formed by laminating the lower surface of the weak adhesive portion 12B and the portion of the lower surface of the release material layer 13 where the weak adhesive portion 12B is not laminated.

以下第2の実施形態の製造方法について説明する。本実施形態においては、剥離シートが2枚(第1及び第2の剥離シート)用意され、第1の剥離シートの剥離処理された面の全面に、第1の粘着剤液が均一に塗工された後乾燥されることにより、強粘着部12Aが成形される。その強粘着部12Aの上には、さらに基材シート11が貼付される。第2の剥離シートの剥離処理された面には、第2の粘着剤液が、パターンコートにより、無塗工部分と塗工部分が交互にストライプ状に塗工された後乾燥され、弱粘着部12Bが成形される。次いで、強粘着部12Aから第1の剥離シートが剥離され、露出した強粘着部12Aが、第2の剥離シート上に成形された弱粘着部12B上に圧着され、粘着シート10が成形される。弱粘着部12B上に強粘着部12Aが圧着されるとき、剥離材上に設けられた無塗工部分に強粘着部12Aが入り込み、これにより、図3、4に示すように、剥離剤層13(第2の剥離シート)の下面に弱粘着部12Bと強粘着部12Aが交互にストライプ状に積層される。なお、本実施形態においても、第1及び第2の粘着液の塗工は、ロールコート、ダイコート、スクリーン印刷等公知の塗工方法で行われる。なお、本実施形態においては、弱粘着部12Bが水玉形状等他のパターンに成形される場合も、同様に製造される。   The manufacturing method of the second embodiment will be described below. In this embodiment, two release sheets (first and second release sheets) are prepared, and the first pressure-sensitive adhesive liquid is uniformly applied to the entire surface of the first release sheet subjected to the release treatment. Then, the strong adhesion portion 12A is formed by drying. A base sheet 11 is further affixed on the strong adhesive portion 12A. On the surface of the second release sheet that has been subjected to the release treatment, the second pressure-sensitive adhesive liquid is coated with a non-coated portion and a coated portion alternately in a stripe pattern by pattern coating, and then dried to provide a weak adhesive. Part 12B is formed. Next, the first release sheet is peeled from the strong adhesive portion 12A, the exposed strong adhesive portion 12A is pressure-bonded onto the weak adhesive portion 12B formed on the second release sheet, and the adhesive sheet 10 is formed. . When the strong adhesive portion 12A is pressure-bonded onto the weak adhesive portion 12B, the strong adhesive portion 12A enters the uncoated portion provided on the release material, and as shown in FIGS. On the lower surface of 13 (second release sheet), weak adhesive portions 12B and strong adhesive portions 12A are alternately stacked in a stripe shape. In the present embodiment, the first and second adhesive liquids are applied by a known coating method such as roll coating, die coating, or screen printing. In addition, in this embodiment, when weak adhesion part 12B is shape | molded in other patterns, such as a polka dot shape, it is manufactured similarly.

第2の実施形態において、第1及び第2の粘着剤液がスクリーン印刷によって塗工される場合、第1の粘着剤液は全面塗工されるので特に糊切れ性が要求されるわけではない。しかし第2の粘着剤液はパターンコートされるので糊切れ性に優れていたほうが良く、特に第2の粘着剤液が水玉形状のように不連続に塗工される場合、糊切れ性は顕著に要求され、第2の粘着剤液にはエマルション系粘着剤が使用されたほうが良い。   In the second embodiment, when the first and second pressure-sensitive adhesive liquids are applied by screen printing, the first pressure-sensitive adhesive liquid is applied over the entire surface, so that it is not particularly required to have a greasy property. . However, since the second pressure-sensitive adhesive liquid is pattern-coated, it is better to have excellent adhesiveness, especially when the second adhesive liquid is applied discontinuously like a polka dot shape. Therefore, it is better to use an emulsion adhesive for the second adhesive liquid.

なお、第2の実施形態では、強粘着部12Aと弱粘着部12Bの積層パターンが逆にされても良い。すなわち、強粘着部12Aが剥離材層13の図中下面に積層してストライプ状又は水玉状等に形成されるとともに、弱粘着部12Bが、強粘着部12Aの下面、及び剥離材層13下面の強粘着部12Aが積層されていない部分に積層して形成されても良い。   In the second embodiment, the lamination pattern of the strong adhesive portion 12A and the weak adhesive portion 12B may be reversed. That is, the strong adhesive portion 12A is laminated on the lower surface in the drawing of the release material layer 13 to be formed in a stripe shape or a polka dot shape, and the weak adhesive portion 12B is formed on the lower surface of the strong adhesive portion 12A and the lower surface of the release material layer 13. The strong adhesive portion 12A may be laminated on a portion where the strong adhesion portion 12A is not laminated.

この場合、第1の剥離シートに第2の粘着剤液(弱粘着部12B)が全面塗工され、その弱粘着部12Bの上に、基材シート11が貼付されるとともに、第2の剥離シート上に第1の粘着剤液(強粘着部12A)がストライプ状等にパターンコートされる。そして第1の剥離シートが弱粘着部12Bから剥離され、弱粘着部12Bと強粘着部12Aが圧着され、粘着シート10が成形される。この場合も、第1及び第2の粘着剤液がスクリーン印刷によって塗工されるとき、第1の粘着剤液はエマルション系粘着剤であったほうが良い。   In this case, the second pressure-sensitive adhesive liquid (weak adhesive portion 12B) is applied to the entire surface of the first release sheet, and the base sheet 11 is pasted on the weak adhesive portion 12B, and the second release is performed. The first pressure-sensitive adhesive liquid (strongly adhesive portion 12A) is pattern-coated on the sheet in a stripe shape or the like. Then, the first release sheet is peeled from the weak adhesive portion 12B, the weak adhesive portion 12B and the strong adhesive portion 12A are pressure-bonded, and the adhesive sheet 10 is formed. Also in this case, when the first and second pressure-sensitive adhesive liquids are applied by screen printing, the first pressure-sensitive adhesive liquid should be an emulsion-based pressure-sensitive adhesive.

以上のように第2の実施形態においても、粘着シート10が貼付される際、皮膚に接する貼付面に強粘着部12A、弱粘着部12Bが設けられるので、第1の実施形態と同様に、皮膚に強固に接着することができるとともに、剥離時の痛みも軽減することができる。   As described above, also in the second embodiment, when the adhesive sheet 10 is applied, the strong adhesive portion 12A and the weak adhesive portion 12B are provided on the application surface in contact with the skin. While being able to adhere | attach on skin firmly, the pain at the time of peeling can also be reduced.

第1及び第2の実施形態においては、粘着剤層12の強粘着部12A及び弱粘着部12Bの少なくとも一方に、複数の孔が設けられていても良い。粘着剤層12に複数の孔を成形することにより、粘着シート10の通気性を良くすることができるからである。   In the first and second embodiments, a plurality of holes may be provided in at least one of the strong adhesive portion 12A and the weak adhesive portion 12B of the adhesive layer 12. This is because the air permeability of the pressure-sensitive adhesive sheet 10 can be improved by forming a plurality of holes in the pressure-sensitive adhesive layer 12.

粘着剤層12に孔を成形する場合、第1及び第2の粘着剤液の少なくともいずれか一方に、水または水と吸水性高分子物質が配合され、これらが粘着剤液に均一に分散される。水または水と吸水性高分子物質が配合される粘着剤液は、水を均一に分散させるために、有機溶媒溶液で構成される。水の添加量は、上記有機溶媒溶液100重量部に対して、5〜50重量部配合されるが、粘着剤がゴム系である場合、好ましくは10〜40重量部配合され、またアクリル系である場合、好ましくは5〜40重量部、さらに好ましくは5〜30重量部配合される。   When forming holes in the pressure-sensitive adhesive layer 12, water or water and a water-absorbing polymer substance are blended in at least one of the first and second pressure-sensitive adhesive liquids, and these are uniformly dispersed in the pressure-sensitive adhesive liquid. The The pressure-sensitive adhesive liquid in which water or water and a water-absorbing polymer substance are blended is composed of an organic solvent solution in order to uniformly disperse water. The amount of water added is 5 to 50 parts by weight based on 100 parts by weight of the organic solvent solution. However, when the pressure-sensitive adhesive is rubber-based, it is preferably 10 to 40 parts by weight, and is acrylic. In some cases, the amount is preferably 5 to 40 parts by weight, and more preferably 5 to 30 parts by weight.

本明細書において、吸水性高分子物質とは、自重の数百倍から4倍に近い水を吸収して膨潤し、しかも水に溶解することなくかつ膨潤物に圧力を加えても、吸水した水を離脱しないものを意味する。吸水性高分子物質には、例えばデンプン−アクリロニトリルグラフト重合体、デンプン−アクリル酸グラフト重合体、デンプン−スチレンスルホン酸グラフト重合体、若しくはデンプン−ビニルスルホン酸グラフト重合体等のデンプン系、セルロース−アクリロニトリルグラフト重合体、セルロース−スチレンスルホン酸グラフト重合体、若しくはカルボキシメチルセルロースの架橋重合体等のセルロース系、ポリビニルアルコール架橋重合体、若しくはアクリル−酢酸ビニルケン化物等のポリビニルアルコール系、ポリアクリル酸塩架橋重合体、若しくはポリアクリロニトリル系重合体ケン化物等のアクリル系、ポリエチレンオキシド系、ポリエチレングリコールジアクリレート架橋重合体、カルボキシル基、カルボキン酸塩、水酸基、若しくはスルホン酸基などを含む重合体、又はポリビリルピロリドン系架橋重合体等が使用される。   In the present specification, the water-absorbing polymer substance absorbs water even if it absorbs water close to several hundred times to four times its own weight and swells without being dissolved in water and applying pressure to the swollen material. It means something that does not leave water. Examples of the water-absorbing polymer material include starch-based materials such as starch-acrylonitrile graft polymer, starch-acrylic acid graft polymer, starch-styrene sulfonic acid graft polymer, starch-vinyl sulfonic acid graft polymer, and cellulose-acrylonitrile. Cellulose-based polymers such as graft polymers, cellulose-styrenesulfonic acid graft polymers, or carboxymethylcellulose cross-linked polymers, polyvinyl alcohol cross-linked polymers, or polyvinyl alcohol-based polyacrylic acid cross-linked polymers such as saponified acryl-vinyl acetate Acrylic, polyethylene oxide, polyethylene glycol diacrylate cross-linked polymers such as saponified polyacrylonitrile polymers, carboxyl groups, carboxylates, hydroxyl groups, Ku is a polymer containing a sulfonic acid group, or a poly kink Le pyrrolidone type crosslinked polymer or the like is used.

吸水性高分子物質の添加量は、水1重量部に対して1/3000〜1/10重量部、好ましくは1/600〜1/20重量部である。吸水性高分子物質の粒子の大きさは小さいほど水に分散されやすいので、平均粒径は60μm以下が適当であり、好ましくは40μm以下である。   The amount of the water-absorbing polymer substance added is 1 / 3,000 to 1/10 parts by weight, preferably 1/600 to 1/20 parts by weight with respect to 1 part by weight of water. The smaller the particle size of the water-absorbing polymer substance, the easier it is dispersed in water. Therefore, the average particle size is suitably 60 μm or less, preferably 40 μm or less.

水または水と吸水性高分子物質が均一に分散された第1又は(及び)第2の粘着剤液は、剥離シートに塗布された後乾燥されて粘着剤層に成形されるが、乾燥されるとき水も気化され、これにより水が配合されていた粘着剤層には均一に複数の孔が成形される。ただし、孔の成形方法は上述の方法に限定されるわけではない。   The first or (and) second pressure-sensitive adhesive liquid in which water or water and a water-absorbing polymer substance are uniformly dispersed is applied to the release sheet and then dried to form a pressure-sensitive adhesive layer. When water is vaporized, a plurality of pores are uniformly formed in the pressure-sensitive adhesive layer in which water is mixed. However, the hole forming method is not limited to the above-described method.

なお、第1及び第2の粘着剤液がスクリーン印刷により塗工される場合、上述したように、水玉等にパターンコートされる第2の粘着剤液はエマルションで構成されたほうが良いが、この場合孔は強粘着部12Aに設けられたほうが良い。すなわち、エマルション粘着剤である第2の粘着剤液には水が分散せず、弱粘着部12Bには上記製造方法では孔を成形することができないので、有機溶剤溶液から成る第1の粘着剤液に水または水と吸水性高分子物質を配合し、強粘着部12Aに複数の孔を成形したほうが良い。ただし、水玉等にパターンコートされるのが強粘着部12Aである場合、第1の粘着剤液がエマルションで構成されるとともに、有機溶媒溶液から成る第2の粘着剤液に水等が配合され、弱粘着部12Bに複数の孔が成形される。   When the first and second pressure-sensitive adhesive liquids are applied by screen printing, as described above, the second pressure-sensitive adhesive liquid pattern-coated on polka dots or the like is preferably composed of an emulsion. In this case, the holes should be provided in the strong adhesive portion 12A. That is, water does not disperse in the second pressure-sensitive adhesive liquid that is an emulsion pressure-sensitive adhesive, and holes cannot be formed in the weak pressure-sensitive adhesive portion 12B by the above manufacturing method. Therefore, the first pressure-sensitive adhesive made of an organic solvent solution is used. It is better to mix water or water and a water-absorbing polymer substance into the liquid, and form a plurality of holes in the strong adhesive portion 12A. However, when the strong adhesive portion 12A is coated with polka dots or the like, the first adhesive liquid is composed of an emulsion, and water or the like is blended with the second adhesive liquid made of an organic solvent solution. A plurality of holes are formed in the weak adhesive portion 12B.

[実施例1]
実施例1では、第1の粘着剤液として、有機溶剤溶液であるアクリル系粘着剤溶液(リンテック(株)製、商品名.O201、固形分50質量%)、第2の粘着剤液として、エマルション系粘着剤であるアクリル系粘着剤溶液(リンテック(株)製、商品名.LS320LH、固形分48質量%)を用意するとともに、シリコーン樹脂により一方の面が剥離処理された剥離紙(リンテック(株)製、商品名.SP-KP-8 シロ(A))を用意した。次いで、第1及び第2の粘着液剤を、ロールコーターを用いて、剥離処理が施された剥離紙の面に、それぞれのストライプ幅が7mmとなるように、交互にストライプ塗工をした後、これを100℃で2分間乾燥し、剥離紙の上に強粘着部及び弱粘着部から成る粘着剤層を形成した。次いで、粘着剤層の上に、厚さ40μmのポリウレタンフィルムから成る基材シートを貼り合わせ粘着シートを得た。なお、乾燥後の強粘着部、弱粘着部の塗布量はそれぞれ30g/m2であった。
[Example 1]
In Example 1, as the first pressure-sensitive adhesive liquid, an acrylic pressure-sensitive adhesive solution that is an organic solvent solution (manufactured by Lintec Co., Ltd., trade name: O201, solid content: 50% by mass), as the second pressure-sensitive adhesive liquid, Prepare an acrylic adhesive solution (trade name: LS320LH, manufactured by Lintec Co., Ltd., solid content: 48% by mass), which is an emulsion adhesive, and release paper (Lintec (Rintec), one side of which has been treated with a silicone resin. Co., Ltd., trade name: SP-KP-8 white (A)) was prepared. Next, after applying the first and second adhesive liquid agents alternately on the surface of the release paper subjected to the release treatment using a roll coater so that each stripe width is 7 mm, This was dried at 100 ° C. for 2 minutes to form an adhesive layer composed of a strong adhesive portion and a weak adhesive portion on the release paper. Next, a base sheet made of a polyurethane film having a thickness of 40 μm was bonded onto the pressure-sensitive adhesive layer to obtain a pressure-sensitive adhesive sheet. The coating amount of the strong adhesive part and the weak adhesive part after drying was 30 g / m 2 .

[実施例2]
実施例1と同一の第1及び第2の粘着剤液を用意すると共に、実施例1と同一の2枚の剥離紙(第1及び第2の剥離紙)を用意した。実施例2では、ロールコーターを用いて、第1の剥離紙の剥離処理が施された面の全面に、第1の粘着剤液を均一に塗工した後、100℃2分間で乾燥し、強粘着部を成形し、その強粘着部の上に厚さ40μmのポリウレタンフィルムから成る基材シートを貼り合わせた。乾燥後の強粘着部の塗布量は、30 g/m2であった。次いで、ロールコーターを用いて、第2の剥離紙の剥離処理が施された面上に、未塗工部分と塗工部分が交互になり、かつそれぞれの幅が7mmとなるように第2の粘着剤液をストライプ塗工し、これを100℃で2分間乾燥させ、弱粘着部を成形した。塗工部分における乾燥後の弱粘着部の塗布量は30g/m2であった。次いで、第1の剥離紙を強粘着部から剥離し、強粘着部及び弱粘着部を圧着し、実施例2の粘着シートを得た。
[Example 2]
While preparing the 1st and 2nd adhesive liquids same as Example 1, the 2 release papers (1st and 2nd release paper) same as Example 1 were prepared. In Example 2, using a roll coater, the first pressure-sensitive adhesive liquid was uniformly applied to the entire surface of the first release paper subjected to the release treatment, and then dried at 100 ° C. for 2 minutes. A strong adhesive part was formed, and a base sheet made of a polyurethane film having a thickness of 40 μm was bonded onto the strong adhesive part. The coating amount of the strongly adhesive part after drying was 30 g / m 2 . Next, using a roll coater, on the surface on which the release treatment of the second release paper has been performed, the second portion is formed such that uncoated portions and coated portions alternate and each width is 7 mm. The pressure-sensitive adhesive liquid was applied in stripes and dried at 100 ° C. for 2 minutes to form a weakly adhesive part. The coating amount of the weak adhesive part after drying in the coated part was 30 g / m 2 . Subsequently, the 1st release paper was peeled from the strong adhesion part, the strong adhesion part and the weak adhesion part were crimped | bonded, and the adhesive sheet of Example 2 was obtained.

[実施例3]
実施例3においては、第2の剥離紙に塗工される弱粘着部の塗工パターン以外は実施例2と同様に実施した。すなわち、第3の実施例では、第2の粘着剤液を、塗工パターンが図5、6に示すように水玉模様になるように塗工した。なお、各水玉は直径が1cmの円形を呈するとともに、水玉の面積率(水玉部分の全体に占める割合)は34%であった。
[Example 3]
In Example 3, it implemented similarly to Example 2 except the coating pattern of the weak adhesion part coated on the 2nd release paper. That is, in the third example, the second pressure-sensitive adhesive liquid was applied such that the application pattern was a polka dot pattern as shown in FIGS. Each polka dot had a circular shape with a diameter of 1 cm, and the area ratio of the polka dots (ratio to the entire polka dot portion) was 34%.

[実施例4〜6]
実施例4、5、6それぞれは、第1の粘着剤液の構成以外、実施例1、2、3それぞれと同様に実施した。すなわち、実施例4、5、6の第1の粘着剤液としては、アクリル系粘着剤溶液(リンテック(株)製、商品名.O201、固形分50質量%)100重量部に、水に吸水性高分子物質が配合されたAR-739M(商品名.ビックテクノス(株)製、固形分2質量%)を50重量部、及び吸水性高分子物質を架橋するための架橋剤(商品名.サンパスタHD-739M、ビックテクノス(株)製、固形分30質量%)を3重量部添加し、混合したものを用いた。これにより、実施例4乃至6では、強粘着部が乾燥される際に、強粘着部に複数の孔が成形された。
[Examples 4 to 6]
Each of Examples 4, 5, and 6 was carried out in the same manner as in Examples 1, 2, and 3, except for the configuration of the first adhesive solution. That is, as the first pressure-sensitive adhesive solution of Examples 4, 5, and 6, 100 parts by weight of an acrylic pressure-sensitive adhesive solution (product name: O201, solid content: 50% by mass) manufactured by Lintec Co., Ltd. was absorbed in water. 50 parts by weight of AR-739M (trade name, manufactured by Big Technos Co., Ltd., solid content 2% by mass) in which a water-soluble polymer substance is blended, and a crosslinking agent (trade name. 3 parts by weight of Sun Pasta HD-739M (manufactured by Big Technos Co., Ltd., solid content 30% by mass) was added and mixed. Thereby, in Example 4 thru | or 6, when the strong adhesion part was dried, the several hole was shape | molded in the strong adhesion part.

[比較例1]
比較例1では有機溶剤溶液であるアクリル系粘着剤溶液(リンテック(株)製、商品名.O201、固形分50質量%)を、ロールコーターを用いて、剥離紙のシリコーン化合物により剥離処理された面上に全面塗工し、これを100℃で2分間乾燥し粘着剤層を成形した。次いで、粘着剤層の上に厚さ40μmのポリウレタンフィルムから成る基材シートを貼り合わせ粘着シートを得た。なお、乾燥後の粘着剤層の塗布量は30g/m2であった。
[Comparative Example 1]
In Comparative Example 1, an acrylic pressure-sensitive adhesive solution (trade name: O201, solid content: 50% by mass, manufactured by Lintec Co., Ltd.), which is an organic solvent solution, was peeled off with the silicone compound of the release paper using a roll coater. The entire surface was coated on the surface and dried at 100 ° C. for 2 minutes to form an adhesive layer. Next, a base sheet made of a polyurethane film having a thickness of 40 μm was bonded onto the pressure-sensitive adhesive layer to obtain a pressure-sensitive adhesive sheet. The application amount of the pressure-sensitive adhesive layer after drying was 30 g / m 2 .

[比較例2]
比較例2ではエマルション系のアクリル系粘着剤溶液(リンテック(株)製、商品名.LS320LH、固形分48質量%)を、ロールコーターを用いて、剥離紙のシリコーン化合物により剥離処理された面上に、全面塗工し、これを100℃で2分間乾燥し粘着剤層を成形した。次いで、その粘着剤層の上に厚さ40μmのポリウレタンフィルムから成る基材シートを貼り合わせ、粘着シートを得た。なお、乾燥後の粘着剤層の塗布量は30g/m2であった。また、比較例1、2では剥離紙は実施例と同一のものを使用した。
[Comparative Example 2]
In Comparative Example 2, an emulsion-based acrylic pressure-sensitive adhesive solution (product name: LS320LH, solid content 48% by mass, manufactured by Lintec Corporation) was peeled off with the silicone compound of the release paper using a roll coater. The whole surface was coated and dried at 100 ° C. for 2 minutes to form an adhesive layer. Next, a base sheet made of a polyurethane film having a thickness of 40 μm was bonded onto the pressure-sensitive adhesive layer to obtain a pressure-sensitive adhesive sheet. The application amount of the pressure-sensitive adhesive layer after drying was 30 g / m 2 . In Comparative Examples 1 and 2, the same release paper as that used in the example was used.

[比較例3〜6]
比較例3乃至6は、実施例2との比較のための比較例であって、強粘着部又は弱粘着部の塗布量を実施例2から変更した比較例である。比較例3では、第1の剥離紙上に成形される強粘着部の乾燥後の塗布量を60g/m2にし、その他を実施例2と同様にした。比較例4では、第1の剥離紙上に成形される強粘着部の乾燥後の塗布量を10g/m2にし、その他を実施例2と同様にした。比較例5では、第2の剥離紙上に成形される弱粘着部の乾燥後の塗布量を60g/m2にし、その他を実施例2と同様にした。比較例6では、第2の剥離紙上に成形される弱粘着部の乾燥後の塗布量を10g/m2にし、その他を実施例2と同様に実施した。
[Comparative Examples 3 to 6]
Comparative Examples 3 to 6 are comparative examples for comparison with Example 2, and are comparative examples in which the coating amount of the strong adhesive part or the weak adhesive part is changed from Example 2. In Comparative Example 3, the coating amount after drying of the strong adhesive portion formed on the first release paper was set to 60 g / m 2 , and the others were the same as in Example 2. In Comparative Example 4, the coating amount after drying of the strong adhesive portion formed on the first release paper was 10 g / m 2 , and the others were the same as in Example 2. In Comparative Example 5, the application amount after drying of the weak adhesive portion formed on the second release paper was set to 60 g / m 2 , and the others were the same as in Example 2. In Comparative Example 6, the application amount after drying of the weak adhesive portion formed on the second release paper was set to 10 g / m 2 , and the others were performed in the same manner as in Example 2.

[比較例7乃至10]
比較例7乃至10は、実施例3との比較のための比較例であって、強粘着部又は弱粘着部の乾燥後の塗布量を実施例3から変更した比較例である。比較例7では、第1の剥離紙上に成形される強粘着部の乾燥後の塗布量を60g/m2にし、その他を実施例3と同様にした。比較例8では、第1の剥離紙上に成形される強粘着部の乾燥後の塗布量を10g/m2にし、その他を実施例3と同様にした。比較例9では、第2の剥離紙上に成形される弱粘着部の乾燥後の塗布量を60g/m2にし、その他を実施例3と同様にした。比較例10では、第2の剥離紙上に成形される弱粘着部の乾燥後の塗布量を10g/m2にし、その他を実施例3と同様に実施した。
[Comparative Examples 7 to 10]
Comparative Examples 7 to 10 are comparative examples for comparison with Example 3, and are comparative examples in which the coating amount after drying of the strong adhesive part or the weak adhesive part is changed from Example 3. In Comparative Example 7, the coating amount after drying of the strong adhesive portion formed on the first release paper was 60 g / m 2 , and the others were the same as in Example 3. In Comparative Example 8, the coating amount after drying of the strong adhesive portion formed on the first release paper was 10 g / m 2 , and the others were the same as in Example 3. In Comparative Example 9, the application amount after drying of the weakly adhesive part formed on the second release paper was set to 60 g / m 2 , and the others were the same as in Example 3. In Comparative Example 10, the application amount after drying of the weak adhesive portion formed on the second release paper was 10 g / m 2 , and the others were performed in the same manner as in Example 3.

[比較例11]
比較例11は、粘着剤層において、塗工部分と、未塗工部分とが交互にストライプ状に設けられた例である。比較例11ではアクリル系粘着剤溶液(リンテック(株)製、商品名.O201、固形分50質量%)を、ロールコーターを用いて、剥離紙のシリコーン化合物により剥離処理された面上に、塗工部分と未塗工部分の幅がそれぞれ7mmとなるように、ストライプ塗工した後、これを100℃で2分間乾燥し、粘着剤層を成形した。次いで、粘着剤層上に厚さ40μmのポリウレタンフィルムから成る基材シートを貼り合わせ、粘着シートを得た。なお、粘着剤層の塗工部分における乾燥後の塗布量は30g/m2であった。なお、上述した比較例1乃至11では、剥離紙を実施例と同一のものを使用した。
[Comparative Example 11]
Comparative Example 11 is an example in which a coated portion and an uncoated portion are alternately provided in a stripe shape in the pressure-sensitive adhesive layer. In Comparative Example 11, an acrylic pressure-sensitive adhesive solution (manufactured by Lintec Co., Ltd., trade name: O201, solid content: 50% by mass) was applied onto the surface of the release paper that had been peeled off with the silicone compound using a roll coater. Stripe coating was performed so that the width of the processed part and the uncoated part was 7 mm, respectively, and this was dried at 100 ° C. for 2 minutes to form an adhesive layer. Subsequently, the base material sheet which consists of a 40-micrometer-thick polyurethane film was bonded together on the adhesive layer, and the adhesive sheet was obtained. The coating amount after drying in the coated part of the pressure-sensitive adhesive layer was 30 g / m 2 . In Comparative Examples 1 to 11 described above, the same release paper as that used in the example was used.

上記各実施例、比較例の粘着シートについて、以下のように評価した。評価結果を表1に示す。

Figure 2007254515
About the adhesive sheet of each said Example and a comparative example, it evaluated as follows. The evaluation results are shown in Table 1.
Figure 2007254515

(1)粘着力評価
各粘着シートの剥離紙を剥離した後、粘着剤層の貼付面におけるプローブタック値を、JIS Z 0237(参考)に従ってプローブタックテスターにて測定した。なお、各粘着シートの粘着剤層が、強粘着部及び弱粘着部を有する場合、それぞれの粘着部についてプローブタック値を測定した。
(1) Adhesive strength evaluation After peeling the release paper of each pressure-sensitive adhesive sheet, the probe tack value on the sticking surface of the pressure-sensitive adhesive layer was measured with a probe tack tester according to JIS Z 0237 (reference). In addition, when the adhesive layer of each adhesive sheet had a strong adhesive part and a weak adhesive part, the probe tack value was measured about each adhesive part.

(2)貼付・剥離性評価
各粘着シートを幅60mm、長さ90mmに裁断した後、人間の前腕部に貼付し、3時間経過後の粘着シートの端部の浮きはがれ、及び剥離時の痛みを評価した。
(2) Evaluation of sticking / peeling property Each adhesive sheet was cut into a width of 60 mm and a length of 90 mm, and then attached to a human forearm, and the end of the adhesive sheet was lifted off after 3 hours, and the pain at the time of peeling Evaluated.

(3)耐水性評価
各粘着シートを幅50mm、長さ50mmに裁断し、その中央に幅10mm、長さ10mmに裁断したガーゼを置き、粘着シートをガーゼと共に、人間の前腕部に貼付した。そして、粘着シートが貼付された前腕部を、5分間水中に浸漬した後、ガーゼの吸水の有無により、粘着シート内への水の浸入の有無を確認した。
(3) Water resistance evaluation Each pressure-sensitive adhesive sheet was cut into a width of 50 mm and a length of 50 mm, a gauze cut into a width of 10 mm and a length of 10 mm was placed at the center, and the pressure-sensitive adhesive sheet was stuck to a human forearm together with the gauze. And after immersing the forearm part with which the adhesive sheet was affixed in water for 5 minutes, the presence or absence of the water penetration into the adhesive sheet was confirmed by the presence or absence of the water absorption of gauze.

(4)透湿度評価
各粘着シートについて、JIS L 1099に従って透湿度を測定した。
(4) Moisture permeability evaluation For each adhesive sheet, the moisture permeability was measured according to JIS L 1099.

表1から明らかなように、実施例1乃至6においては、強粘着部のプローブタック値を3000〜6000N/5mmφにするとともに、弱粘着部のプローブタック値を600〜2000N/5mmφにすることにより、粘着シートの貼付時のめくれが防止され、かつ剥離時の痛みを低減できることが理解できる。また、本実施例1乃至6では、強粘着部及び弱粘着部の粘着剤として親油性粘着物質が用いられたため、貼付時の粘着シート内への水の浸入を防止することができた。   As is apparent from Table 1, in Examples 1 to 6, the probe tack value of the strong adhesive portion was set to 3000 to 6000 N / 5 mmφ, and the probe tack value of the weak adhesive portion was set to 600 to 2000 N / 5 mmφ. It can be understood that turning-up of the adhesive sheet is prevented and pain at the time of peeling can be reduced. Further, in Examples 1 to 6, since the lipophilic adhesive substance was used as the adhesive for the strong adhesive part and the weak adhesive part, it was possible to prevent water from entering the adhesive sheet at the time of application.

さらに、強粘着部に複数の孔を設けた実施例4乃至6は、孔を設けなかった実施例1乃至3に比べて、透湿度が高く、通気性が良好であったことが理解できる。   Furthermore, it can be understood that Examples 4 to 6 in which a plurality of holes were provided in the strong adhesive portion had higher moisture permeability and better air permeability than Examples 1 to 3 in which holes were not provided.

それに対して、比較例1、2に示すように、粘着剤層に粘着力の違う部分を設けなかった場合、貼付時のめくれの発生及び剥離時の痛みの発生の両方を防止することはできなった。また、比較例3乃至10に示すように、粘着力の違う部分を設けた場合でも、強粘着部及び弱粘着部のいずれかのプローブタック値が上記記数値範囲外にあると、貼付時のめくれ及び剥離時の痛みのいずれかが発生した。また、塗工部分と無塗工部分をストライプ状に設けた比較例11は剥離時の痛みが発生しなかったが、貼付時のめくれ及び粘着シート内への水の浸入が認められた。   On the other hand, as shown in Comparative Examples 1 and 2, if the adhesive layer is not provided with a portion having a different adhesive force, it is possible to prevent both the occurrence of turning at the time of application and the occurrence of pain at the time of peeling. became. Further, as shown in Comparative Examples 3 to 10, even when a portion having a different adhesive strength is provided, if the probe tack value of either the strong adhesive portion or the weak adhesive portion is outside the above numerical value range, Either turning or peeling pain occurred. Further, in Comparative Example 11 in which the coated portion and the non-coated portion were provided in a stripe shape, no pain was generated at the time of peeling, but turning-up at the time of application and water permeation into the adhesive sheet were observed.

第1の実施形態に係る粘着シートを示す模式的な縦断面図である。It is a typical longitudinal section showing the adhesive sheet concerning a 1st embodiment. 第1の実施形態に係る粘着層を貼付面側から見た平面図である。It is the top view which looked at the adhesion layer concerning a 1st embodiment from the pasting side. 第2の実施形態に係る粘着シートを示す模式的な縦断面図である。It is a typical longitudinal section showing an adhesive sheet concerning a 2nd embodiment. 第2の実施形態に係る粘着層を貼付面側から見た平面図である。It is the top view which looked at the adhesion layer concerning a 2nd embodiment from the pasting side. 第2の実施形態の変形例に係る粘着シートを示す模式的な縦断面図である。It is a typical longitudinal section showing an adhesive sheet concerning a modification of a 2nd embodiment. 第2の実施形態の変形例に係る粘着層を貼付面側から見た平面図である。It is the top view which looked at the adhesion layer concerning the modification of a 2nd embodiment from the pasting side.

符号の説明Explanation of symbols

10 粘着シート
11 基材シート
12 粘着剤層
12A 強粘着部
12B 弱粘着部
13 剥離材層
DESCRIPTION OF SYMBOLS 10 Adhesive sheet 11 Base material sheet 12 Adhesive layer 12A Strong adhesive part 12B Weak adhesive part 13 Release material layer

Claims (5)

基材シート上に皮膚に貼付するための粘着剤層が設けられている皮膚貼付用粘着シートであって、前記粘着剤層は、皮膚に接する貼付面に少なくとも一部が設けられるとともに、親油性粘着物質から形成される強粘着部及び弱粘着部を有し、前記強粘着部のプローブタック値が、前記弱粘着部より高いことを特徴とする皮膚貼付用粘着シート。   A pressure-sensitive adhesive sheet for skin application in which a pressure-sensitive adhesive layer for application to the skin is provided on a base material sheet, wherein the pressure-sensitive adhesive layer is provided with at least a part on the application surface in contact with the skin and is lipophilic. A pressure-sensitive adhesive sheet for skin application, comprising a strong adhesive part and a weak adhesive part formed from an adhesive substance, wherein the probe tack value of the strong adhesive part is higher than that of the weak adhesive part. 前記強粘着部のプローブタック値が3000〜6000mN/5mmφであるとともに、前記弱粘着部のプローブタック値が600〜2000mN/5mmφであることを特徴とする請求項1に記載の皮膚貼付用粘着シート。   The adhesive sheet for skin application according to claim 1, wherein the probe tack value of the strong adhesive portion is 3000 to 6000 mN / 5 mmφ, and the probe tack value of the weak adhesive portion is 600 to 2000 mN / 5 mmφ. . 前記粘着剤層に複数の孔が設けられることを特徴とする請求項1に記載の皮膚貼付用粘着シート。   The adhesive sheet for skin application according to claim 1, wherein a plurality of holes are provided in the adhesive layer. 前記強粘着部及び弱粘着部のいずれか一方の粘着部に前記複数の孔が設けられるとともに、他方の粘着部がエマルション系粘着剤であることを特徴とする請求項3に記載の皮膚貼付用粘着シート。   The skin adhesive application according to claim 3, wherein the plurality of holes are provided in one of the strong adhesive part and the weak adhesive part, and the other adhesive part is an emulsion adhesive. Adhesive sheet. 前記一方の粘着部は、前記強粘着部であることを特徴とする請求項4に記載の皮膚貼付用粘着シート。   The adhesive sheet for skin application according to claim 4, wherein the one adhesive part is the strong adhesive part.
JP2006078138A 2006-03-22 2006-03-22 Pressure-sensitive adhesive sheet for application to skin Pending JP2007254515A (en)

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