201011086 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種可熱剥離型感壓黏著片，其可在任何需 要之時，藉由短暫加熱而可輕易與微小被黏著體自然分離。 【先前技術】 傳統上已知可熱剥離型感壓黏著片包含一基片以及一含 有可熱膨脹性微球體（或發泡劑)之感壓黏著片，或含有膨脹劑 於其上（中華民國專利公告號碼：1291983、1291984、1264456、 1255844、1254737、1222991、562847、546361 等，及中華民 國專利公開號碼：200604308、200604309、200530362、 200427810等）。該黏著片在使用時兼具感壓黏著性與可剝離 性之可熱剥離型感壓黏著片，其特徵為藉加熱使可熱膨脹性微 ，體（或發泡劑）或類似物起泡或膨脹而減少與被黏著體之黏 著面積（或接觸面積），換句話說，對被黏著體之黏著力也隨之 降低，因此可輕易地將被黏著體剝離（分離）。基於此特徵，該 等^物可被胁電子料生產步㈣，暫咖定及會再回收 之標鐵。 要將子伽有杨_趨勢，已有許多之研究企圖 ί電子零件（喊電容器、發光二極體等）之日曰曰 熱剥離型感壓黏著片可被用於如電子零件之切 收率，進而影響整個製程的生產 離的微小陶麦片之回 利所ί 之發明專 膨脹性感壓黏著層巾未加鱗狀前’該可熱 脹性感壓轉層的;^ 雜大於可熱膨 厚度’以致於造成可熱膨脹性感壓黏著層表 201011086 面的凸起，可以讓加熱後與被黏著體的剥離的效果提高。雖然 如此做法可以解決上述的情形，但萬一可熱膨脹微球的大小過 大或數目過多’勢必產生可熱膨脹性感塵黏著層的表面粗糖度 變大，如此在加熱膨脹前’將喪失對微小被黏物之黏著效果（$ 參考專利號碼1222991所詳述之内容），所以在使用該專利技 術時，必須對可熱膨脹微球的大小有較嚴格的篩選才行。但即 使如此，根據該專利所述之可熱剥離型感壓黏著片，似乎比較 適合在較大接觸面積的被黏著體的加熱剥離時使用，對較小接 觸面積的娜著體的加熱麵效果，並沒有特綱加以。 【發明内容】 因此發明之目的係為提供一種可熱剥離型感壓黏著 片，其在黏著微小被黏著體時，能夠在短暫加熱後將黏著力降 得極低，使黏著片與微小被黏著體可以自然分離。 根據本發明人廣泛研究的結果’發現某些可熱膨脹性微球 體與不含羧基的丙烯酸系感壓黏著劑及油溶性樹脂相容性不 佳。利用此特性所做出的可熱剥離型感壓黏著片黏著於被黏著 體時’在加熱升溫的過程中，可熱膨脹性感壓黏著層中所包含 的可，膨脹性微球體因為與不含羧基的丙烯酸系感壓黏著劑 ，油溶性樹^不相容的關係’會逐漸遷移至可熱膨脹性感壓黏 著層與被黏著體之黏著接觸面之間，待達到該可熱膨脹性微球 體之^泡溫度時’會因可熱膨脹性微球體大多在感壓黏著層與 被黏著體之黏著接觸面之間發泡膨脹，而能更有效率地降低與 被黏著體的黏著面積，即使被黏著體極為微小，也能很容易地 被自然分離。 【實施方式】 [實施本發明之最佳形態] 以下將本發明之實施形態，必要時邊參照圖式邊加以詳細 說明。又，同一之部材或零件等附有同一之符號。 [可熱剥離型感壓黏著片] 材2=材^^=^㈣所示，具有基 體之可熱膨脹性感壓膨脹性微球 著層4之間存在有彈夂在ί: ?可;膨脹性感壓黏 著層4 保濩之形態。而且’可熱膨脹性感壓黏 ϊ Λ所包ί的可熱膨脹性微球體(其外殼成分可為偏二氯乙 l~hli ^ Vinylidene chi-^- me acrylate-acrylonitrile copolymer)。再者，可201011086 IX. Description of the Invention: [Technical Field] The present invention relates to a heat-peelable pressure-sensitive adhesive sheet which can be easily separated from a minute adherend by a short heating whenever necessary. [Prior Art] It is conventionally known that the heat-peelable pressure-sensitive adhesive sheet comprises a substrate and a pressure-sensitive adhesive sheet containing heat-expandable microspheres (or a foaming agent), or a swelling agent thereon (Republic of China Patent publication numbers: 1291983, 1291984, 1264456, 1255844, 1254737, 1222991, 562847, 546361, etc., and the Republic of China patent publication numbers: 200604308, 200604309, 200530362, 200427810, etc.). The heat-peelable pressure-sensitive adhesive sheet which has pressure-sensitive adhesiveness and peelability at the time of use, and is characterized in that a heat-expandable micro-body (or foaming agent) or the like is foamed by heating or The expansion reduces the adhesion area (or contact area) with the adherend, in other words, the adhesion to the adherend is also lowered, so that the adherend can be easily peeled off (separated). Based on this feature, the object can be used in the production step (4) of the threat electronic material, and the standard iron that will be recycled and reclaimed. There are many research attempts to make the sub-gathering Yang _ trend, and the hot-release pressure-sensitive adhesive sheets of electronic parts (shock capacitors, light-emitting diodes, etc.) can be used for cutting yields such as electronic parts. , in turn, affecting the production process of the tiny ceramic granules of the entire process, the invention of the special expansion of the sexy pressure-adhesive layered towel without scaly front 'the thermal expansion of the sexy pressure-transfer layer; ^ miscellaneous than the thermal expansion thickness' Therefore, the protrusion of the surface of the heat-expandable elastic pressure-sensitive adhesive layer 201011086 can be improved, and the effect of peeling off from the adherend after heating can be improved. Although this can solve the above situation, if the size of the heat-expandable microspheres is too large or too large, the surface roughness of the heat-expandable sexy dust adhesion layer will increase, so that it will lose its viscosity after being heated and expanded. The adhesion effect of the object (refer to the contents detailed in the reference patent number 1222991), so when using the patented technology, it is necessary to have a stricter screening of the size of the thermally expandable microspheres. However, even in this case, the heat-peelable pressure-sensitive adhesive sheet according to the patent seems to be suitable for use in the heat-peeling of the adherend with a large contact area, and the heating surface effect on the contact area of the small contact area. There is no special program. SUMMARY OF THE INVENTION Therefore, the object of the invention is to provide a heat-peelable pressure-sensitive adhesive sheet which can reduce the adhesion force to a very low level after a short heating, and the adhesive sheet and the micro-adhesive are adhered to each other when the micro-adhesive body is adhered. The body can be naturally separated. According to the results extensively studied by the present inventors, it has been found that some of the heat-expandable microspheres have poor compatibility with the carboxyl group-free acrylic pressure-sensitive adhesive and the oil-soluble resin. When the heat-peelable pressure-sensitive adhesive sheet made by this characteristic is adhered to the adherend, the expandable microsphere contained in the heat-expandable pressure-sensitive adhesive layer is heated and heated, and the expandable microsphere is free from carboxyl groups. Acrylic pressure-sensitive adhesive, oil-soluble tree ^ incompatible relationship 'will gradually migrate between the heat-expandable elastic pressure-adhesive layer and the adhesive contact surface of the adherend, to achieve the heat-expandable microspheres At the time of temperature, the heat-expandable microspheres are mostly foamed and expanded between the pressure-sensitive adhesive layer and the adhesive contact surface of the adherend, so that the adhesion area to the adherend can be more effectively reduced, even if the adhesive body is extremely Tiny, it can be easily separated by nature. [Embodiment] [Best Mode for Carrying Out the Invention] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as necessary. Also, the same components or parts are attached with the same symbols. [Hot-peelable pressure-sensitive adhesive sheet] Material 2 = material ^^=^ (4), with thermal expansion of the matrix, elastic pressure-expandable microspheres, there is a magazine between the layers 4 in the ί: ? 可; The pressure-adhesive layer 4 protects the shape. Further, the heat-expandable microspheres (which may be a component of the shell of the heat-expandable, viscous, viscous, viscous, and acrylonitrile copolymer) may be used. Furthermore,
黏著層4所包含的黏著劑為不含羥基的丙烯酸 系感壓黏者劑及油溶性樹脂。 [基材] 基材可作為可熱膨脹性感壓黏著層等之支持母體使用。美 材可適當制歸之_或諸等讎綠材。該等塑膠之g 膜或片之材料列舉例如將聚乙烯(PE)、聚丙烯(pp)、乙烯—丙 烯共聚物、乙烯·乙酸乙烯酯共聚物(EVA)等烯烴作為單體 成份之烯烴系樹脂；聚對苯二甲酸乙二醇酯（ΡΕΤ)、聚萘二曱 酸乙二醇酯（PEN)、聚對苯二曱酸丁二醇酯（ρΒΤ)等聚酯；聚氣 乙烯(PVC)、聚苯硫醚(pps);聚醯胺(尼龍）、全芳族聚醢胺（芳The adhesive contained in the adhesive layer 4 is a hydroxy-free acrylic pressure-sensitive adhesive and an oil-soluble resin. [Substrate] The substrate can be used as a support matrix for a thermally expandable pressure-sensitive adhesive layer or the like. U.S. materials can be properly produced or equated to green materials. Examples of the material of the plastic film or sheet include olefins having a monomer such as polyethylene (PE), polypropylene (pp), ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer (EVA) as a monomer component. Resin; polyethylene terephthalate (ΡΕΤ), polyethylene naphthalate (PEN), polybutylene terephthalate (ρΒΤ) and other polyesters; polyethylene (PVC) ), polyphenylene sulfide (pps); polyamine (nylon), wholly aromatic polyamine (fang)
201011086 醯胺）等醯胺系樹脂；聚醚醚酮(ΡΕΕΚ)等。該等材料可單獨使 用，亦可2種以上組合使用。 基材之厚度、強度或柔軟性可對應使用目的作適當之選 擇’例如一般在500微米（/zm)以下(例如1至5〇〇微米），較 好1至300微米，更好5至250微米’但是並不只限於此。基 材可為單層之形態，亦可為具有經積層之形態。 為了賦予可熱膨脹性感壓黏著層等之剥離性，可施行例如 經由有機矽系樹脂或氟素系樹脂等剥離劑等之塗覆處理。 [可熱膨脹性感壓黏著層] 可熱膨脹性感壓黏著層至少含有為了賦予黏著性之黏著 劑及賦予可熱膨脹性之可熱膨脹性微球體。因此，例如利用可 8 201011086 …獅^•祕輪>1、可鱗雌感難 體（例如電子零件或部姑m經心工备I f占貼於被黏者 愚鮮Γ =材等）時由任鱗候將可熱膨脹性感 ί 可熱膨祕微賴進行發泡及/或膨脹處 使可”、、膨脹性感壓黏著層膨脹，經由其 黏著力，可將可__感縣著片容易、地 攸黏貼之被黏者體剥離。 其中較佳料為，可鱗雌祕鮮層 =2球又體外=成分為偏二氯乙烯-甲基丙烯二=稀二 基的丙烯酸錢壓黏著劑及油溶性樹脂。在這樣的模合 :熱，性感壓黏著層黏貼於被黏綱，在逐漸升溫的過‘ 内3在可熱膨脹性感壓黏著層之可熱膨脹性微球體，將因 内ίίΓ熱膨脹性感壓黏著層之不含絲的丙烯酸系感 [黏者劑及油溶性樹脂不相容的關係，逐漸遷移(migrati〇n) 至可熱膨尉域壓轉層與絲賴之轉_面之間，制 性微賴之發泡溫度時，會_可鱗服性微球 體大夕在感壓黏著層與被黏著體之黏著接觸面之間發泡膨 脹’而能更有效率地降低與被黏著體_著面積，使得被黏 體更容易被加熱而剝離。 最佳模式為，可熱膨脹性微球體外殼成分為偏二氯乙烯一 甲$丙烯酸甲酯-丙烯腈共聚物，而且其百分之五十的粒徑分 ，範圍需小於15微米（_)’以及不含絲的丙婦酸系感麼黏 者劑及油溶性樹脂等所組成的可熱膨脹性感壓黏著層。因為當 可熱膨脹性微賴之祕社時，其在可鱗雌黏著^ 之間的，移性較差，比較*容易遷移至可熱膨脹性感壓黏著層 與，黏著體之黏著接觸面之間，使得可熱膨脹性微球體在感壓 黏著層與被黏著體之黏著接觸面之間發泡膨脹的比例降低，而 影響黏著片與被黏著體的剥離效果。 _ 以偏二氯乙烯—甲基丙烯酸甲酯-丙烯腈共聚物為外殼成 201011086 熱膨脹性感壓黏著=㈣仏疋’—般相對於形成可 量分，更好為Η)至3: ίί上至50重量分’較好為5至40重 (例如餘著層内含的鮮劑，需為不含縣單體 黏以黏=酸ί體等咖 外，對應黏著等/可聚合物)等聚合物成分之 ❹ 鲁 者）、等成’於常溫為固體、半_或液狀 n真充劑、抗老化劑等適當添加劑。 微球i祕姆層可經由將例如黏著劑、可熱膨脹性 溶賊無添加鮮混合，職㈣層之慣 體、必要ί之;有黏著劑、可熱膨脹性微球 等Γ上再述混合物塗抹於適當之分隔材（剥離紙 壓:著著層。又、可熱膨脹性感 =膨脹性錢黏著層之厚度，可 著斷糾麟絲作射婦，辦為至 [彈性黏著層] 及握ίϊΓΙί雜性錢姆層絲材之間s的黏合力 為絲麵壓黏著片之變形性，需設置彈性黏著層作 為基材與可熱膨脹性感壓黏著層之中間層。 卞 黏菩ίΐ設ΐ彈性黏著層，在可熱剥離型感壓黏著片黏著於被 #者體時’將上述可熱_型顏黏著片之表面（可熱膨騰性 201011086 iij 之仿效被黏著體之表面形狀，可使黏 1變大叫加未加_脹前之黏著效果。 時’因可熱獅型感懸著片從被黏著體加熱剥離 ί著勒奴可鱗祕微球體，也 中，所以著層與彈性黏著層之黏合界面 行，如果層錄緊抓住可熱雜性缝黏著層才 則在加層娜性歸狀齡力不足， 層分離之情形\灸了此θ有可熱膨脹性感壓黏著層與彈性黏著 ❹ ❹ 可以為ΐΐ :厚抑4 G至3G微米（卵）°彈性黏著層 了”，亦可用2個以上之層構成。 1·^ 隔材](separator) 著層Hi 用分隔材（剥離襯整)作為可熱膨脹性感壓黏 膨脹性s但是分隔材並不一定需要設置。於設置可熱 者層以外之轉層時，亦可使用分隔材(剥離襯 墊)作為可熱膨脹性感壓黏著層之保護 =财 _雜材倾絲著層（可_脹性感壓 離。曰）時（亦即’被黏著體黏貼於經分隔材保護之黏著層）剥 該等分隔材可使用慣用之剥離紙等。具體而言，分隔材可 ，用^有贿财系、長舰基系、氟素系、硫化辦剥離劑 ^面處理之塑膠薄膜或紙_離層之基材；由聚四氟乙稀、聚 ，二I乙烯^化乙稀、聚氟化亞乙烯、四氟乙稀、六氧丙 烯共聚物、氣氟乙烯、氟化亞⑽共聚物純素絲合物组成 之低黏合絲材；由烯烴系翻旨⑷如聚乙烯、料稀等）等無 極性聚合物組成之低黏合性基材等。又，分隔材亦可作為支 可熱膨脹性感壓黏著層之基材使用。 、 分隔材可_公知缝用之方法賴。又，分隔材之厚度201011086 guanamine) and other amide-based resins; polyetheretherketone (ΡΕΕΚ) and the like. These materials may be used singly or in combination of two or more. The thickness, strength or softness of the substrate may be suitably selected depending on the purpose of use, for example, generally below 500 micrometers (/zm) (for example, 1 to 5 micrometers), preferably 1 to 300 micrometers, more preferably 5 to 250. Micron' but not limited to this. The substrate may be in the form of a single layer or may have a laminated form. In order to impart releasability to the thermally expandable pressure-sensitive adhesive layer or the like, a coating treatment such as a release agent such as an organic lanthanum resin or a fluororesin may be applied. [Thermally expandable pressure-sensitive adhesive layer] The heat-expandable pressure-sensitive adhesive layer contains at least an adhesive for imparting adhesiveness and a heat-expandable microsphere which imparts heat expandability. Therefore, for example, the use of 8 201011086 ... lion ^ • mysterious wheel > 1, can be scaled female difficult body (such as electronic parts or part of the gu 经 工 I 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占 占At the time, the scales will be able to expand and be sexy. The heat can be foamed and/or expanded to make it expand, and the elastic pressure-adhesive layer will expand. Through its adhesive force, it can be used. It is easy to peel off the sticky body of the mantle. Among them, the preferred material is the scaly female secret layer = 2 balls and in vitro = the component is vinylidene chloride-methacrylic acid = dilute dibasic acrylic pressure adhesive And oil-soluble resin. In such a mold: hot, sexy pressure-adhesive layer adhered to the viscous, in the gradual warming of the inner 3 in the heat-expandable elastic pressure-adhesive layer of heat-expandable microspheres, will be within Thermal expansion of the elastic pressure-adhesive layer of silk-free acrylic feeling [invisible relationship between adhesive and oil-soluble resin, gradually migrated (migrati〇n) to the heat-expandable domain pressure-transfer layer and silky Between the system and the foaming temperature, the scalp microspheres will be viscous and sticky. The foaming expansion between the adhesive surfaces of the body can more effectively reduce the area of the adherend, so that the adherend is more easily heated and peeled off. The best mode is that the heat-expandable microsphere outer shell component is Partially dichloroethylene-methyl acrylate-acrylonitrile copolymer, and its 50% particle size range, less than 15 microns (_)' and the absence of silk propylene glycol A heat-expandable and elastic pressure-adhesive layer composed of a solvent and an oil-soluble resin, etc., because when it is heat-expandable, it is between the scaly and the female, and the mobility is poor, and it is easy to migrate to the thermal expansion. Between the pressure-sensitive adhesive layer and the adhesive contact surface of the adhesive body, the proportion of the heat-expandable microspheres between the pressure-sensitive adhesive layer and the adhesive contact surface of the adherend is reduced, and the adhesive sheet is adhered and adhered. The peeling effect of the body. _ Using vinylidene chloride-methyl methacrylate-acrylonitrile copolymer as the outer shell into 201011086 thermal expansion sexy pressure bonding = (four) 仏疋 '-like relative to the formation of the amount of the amount, better Η) to 3: ίί up to 50 weight The fraction 'is preferably 5 to 40 weights (for example, the freshener contained in the remaining layer, the polymer component which is not included in the monomer, sticky, acid, etc., corresponding to adhesion, etc.) After that, it is a suitable additive such as a solid at room temperature, a semi- or liquid n-charger, an anti-aging agent, etc. The microsphere i-mym layer can be passed through, for example, an adhesive, a heat-expandable thief. Add fresh mixed, the (4) layer of the body, necessary; there are adhesives, heat-expandable microspheres, etc., and then apply the mixture to the appropriate partition (peeling paper pressure: facing the layer. Also, heat expandable sexy = the thickness of the expansive money adhesion layer, can be cut off the sacred silk as a shooting woman, the adhesion between the [elastic adhesive layer] and the grip 钱 ϊΓΙ 钱 钱 钱 钱 为 为 为 为 为 为 为 丝 丝 丝 丝 丝For the deformability, an elastic adhesive layer is required as an intermediate layer between the substrate and the thermally expandable pressure-sensitive adhesive layer.卞 菩 ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ ΐ 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩 菩The surface shape of the body can make the viscosity of the viscous 1 increase and the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In the middle, so the bonding interface between the layer and the elastic adhesive layer, if the layer is tightly grasped by the heat-adhesive seam, the layer is not enough in the layering condition, and the layer is separated. The heat-expandable elastic pressure-adhesive layer and the elastic adhesive layer ❹ can be ΐΐ: thick 4G to 3G micron (egg) ° elastic adhesive layer", or can be composed of more than 2 layers. 1·^ 隔材] (separator) The layer Hi is made of a separator (peeling lining) as the heat expandable elastic pressure-adhesive expansion s, but the separator does not necessarily need to be provided. When a layer other than the heat-transfer layer is provided, a separator (release liner) may also be used. ) as a thermal expansion of the elastic pressure-adhesive layer of protection = wealth _ miscellaneous material draping layer (can _ When the swell is pressed away, 曰) (that is, 'adhered to the adhesive layer protected by the partition material'), the peeling paper can be used for peeling the partitioning material, etc. Specifically, the partitioning material can be used Department of Finance, Long-Ship Foundation, Fluorine, Vulcanization, Stripping Agent, Plastic Film or Paper _ Separation Substrate; Polytetrafluoroethylene, Poly, Di-ethylene Ethylene, Polyfluoride a low-bonding wire composed of a vinylene copolymer, a tetrafluoroethylene, a hexa-oxypropylene copolymer, a gas-fluorinated ethylene, a fluorinated sub-(10) copolymer, and a pure-filament wire; and an olefin-based (4) such as polyethylene, a thin material, etc. a low-adhesive substrate composed of a non-polar polymer, etc. Further, the separator may be used as a substrate for a thermally expandable pressure-sensitive adhesive layer. The separator may be known as a method for sewing. Thickness
II 201011086 等亦無特別之限制。 本發明之可熱剥離型感壓黏著片可具有雙面黏合面之 面黏著片之形‘4 ’但以只有單面成為黏合面之黏著片 佳。所以，可細離麵齡著片以基材之單面為形成之熱 膨脹性感壓黏著層形態之可熱剥離型感壓黏著片条 [實施例] 以下，以實施例為基礎對本發明做更詳細之說明 本發明並不只限於該等實施例。 ―凡 實施例1 可，膨脹微球體’其百分之五十的平均粒縣9〜15 (//Π1) ’隶大粒徑為28微米（_，其外殼成分為偏二氯 甲基丙烯酸甲酯-丙烯腈共聚物。 ' 甲美二2_乙基己_烯酸丁醋/ f丞丙狀甲自日/丙烯酸2-祕乙g旨（含以重量 氰酸醋交卿)之溶液，以-層乾厚度為15微米於 厚度為100微求㈤之聚醋薄膜上，並1^ 橡膠彈性黏著層。 ㈣Μ场到-個似 :種於甲苯中含有以重量計雇份之丙烯酸2_乙 :丙烯@夂丁酯/甲基丙烯酸甲酯/丙烯酸2，基乙酯之主g ‘ 二ίϊ，劑(含以重量計2份之聚異氰_旨交聯《忿 重罝汁25伤之上述可熱膨脹微球體及以 松香樹脂之·。將峨生之额n 碰 塗饰於-個分隔材上，並使乾燥以射（_) y壓_被黏著於似橡膠彈^著層=== 機=著層之聚醋薄膜，以得到可熱^型^黏1片膠有 可^脹微球體’其百分之五十的平均 (，)’最大粒徑為28微米Ura) 】一9 = 卡 甲基丙稀酸甲醋-丙烯猜共聚物。、k成刀為偏一氯乙烯- 12 201011086 將-種於甲苯中含杨職2-乙基己酯/_酸 :基丙烯酸甲酯/丙烯酸2_羥基乙酯（含以重量計2 醋交賴}之溶液ϋ乾厚度為ls微米（_塗佈於 厚度為100微米（#m)之聚酯薄膜上，並使乾燁彳； 橡膠彈性骑層。 似命场到-個似 —種於甲苯甲含有以重量計100份之㈣酸2—乙以护 甲基丙烯酸甲s|/丙烯酸2_經基乙醋之主 壓黏者劑(含以重量計2份之聚異氰酸酯交聯劑)及以 ίίί 25份之上述可熱膨脹微球體及以重量計10份之油溶性 ^香^脂及以重量計10份之油溶性_樹脂之溶液。將所產 =液以祕度為35微米（#m)塗佈於—個分隔材上，並使 黏著片°所得之感壓黏著片_著於似橡 胁性黏㈣側，其上有似橡膠有機彈性 以得到可__龜歸4。 謂m專膜 比較仓ιΜ 可熱膨脹微球體，其百分之五十的平均粒徑為9〜 (从m)，最大粒徑為28微米（#m)，其外殼成分為偏__烯、 甲基丙稀酸甲醋-丙烯腈共聚物。 成刀為偏一乳乙席- 甲其苯中含有丙烯酸2-乙基己·丙烯酸丁酯/ m酸ί稀酸(含以重量計2份之聚異氰酸醋交聯 二2厚度為15微米("m)塗佈於厚度為1〇〇 =(。卵)之聚醋薄膜上’並使乾燥以得到-個似橡膠彈性黏 /丙烯中丙含烯 著劑(含以«計2份之聚/氰_旨交感3 =液以乾厚度為35微米㈤塗佈於一個分 Μ才上’並使餘以得到—個感壓黏著片。所得之感壓黏著片 13 201011086 橡:黏著層側，其上有似橡膠有機彈性黏著層 =，叫到可__祕黏著片。 可^微球體，其百*之五十的平均粒徑為9 (#m)，最大粒徑為28微米（//m)，其外殼成分U 曱基丙烯酸甲酯~丙烯腈共聚物。 # 婦 甲其於甲苯中含有丙騎2—乙基己·㈣酸丁醋/ 以重量計2份之聚異氰酸醋交聯 3(。㈣H触上，錢乾如雕Η目似橡膠ί性黏 種於甲苯中含有以重量計⑽份之丙烯酸2_乙基己醋 ^齊】(3以重_ 2份之聚異氰酸自旨交聯劑)及以重量計25份 熱球體之溶液。將所產生之溶液以乾厚度為 =(，塗佈於一個分隔材上，並使乾燥以得到一個感壓 古/ :所得之感壓黏著片被黏著於似橡膠彈性黏著層侧，其 ii U膠有機彈性黏著層之聚醋薄膜，以得到可熱剥離型感 比較例3 可^彡服微賴，其百分之五+时均健為9〜15微米 甲粒徑為28微米Um) ’其外殼成分為偏二氯乙稀一 曱基丙烯酸甲酯-丙烯腈共聚物。 甲美於甲苯中含有丙烯酸2~乙基己目旨/丙烯酸丁醋/ =丙?酸曱酯/丙_ 2_絲⑽(含以重量計2份之聚異 ϊίϊι聯劑）之溶液，以一層乾厚度為15微米（_塗佈於 以：：一醋薄膜上’並使乾燥以得到-個似 種於甲笨中含有以重量計100份之丙烯酸2~乙基己酯 201011086 鱗雌_之雜。將職生之溶液 到一 ^ΐίιϊΙΓ=塗^一個分隔材上’並使乾燥以得 二目，丨ίff著片被黏著於似卿彈性黏 評估試驗There are no special restrictions on II 201011086 and so on. The heat-peelable pressure-sensitive adhesive sheet of the present invention may have a shape of a double-sided adhesive surface of the adhesive sheet of '4' but is preferably an adhesive sheet having only one side as an adhesive surface. Therefore, the heat-dissipable pressure-sensitive adhesive sheet in the form of a thermally expandable pressure-sensitive adhesive layer formed by one side of the substrate can be finely separated. [Embodiment] Hereinafter, the present invention will be described in more detail based on the examples. DESCRIPTION OF THE INVENTION The invention is not limited to the embodiments. ―Example 1 can expand the microspheres' 50% of the average grain count 9~15 (//Π1) 'Large size is 28 microns (_, the outer shell component is partial dichloromethacrylic acid Methyl ester-acrylonitrile copolymer. 'Ami 2-Ethylhexaenoic acid butyl vinegar / f 丞 甲甲甲日日/Acrylic acid 2- Secret B (with weight of cyanate vinegar) , with a layer of dry thickness of 15 μm on a 100 μm (5) thickness of the polyester film, and 1 ^ rubber elastic adhesive layer. (4) Μ field to - like: planted in toluene containing a weight of acrylic 2 _B: propylene@夂丁酯/methyl methacrylate/acrylic acid 2, the main g' of the base ethyl ester's agent (containing 2 parts by weight of polyisocyanide) Injuring the above-mentioned heat-expandable microspheres and rosin resin. The surface of the twins is touched on a separate material, and dried to shoot (_) y pressure _ is adhered to the rubber-like elastic layer === Machine = layered polyester film to get hot type ^ sticky 1 piece of glue can be expanded microspheres '50% average (,) 'maximum particle size is 28 microns Ura) 】9 = card methyl methacrylate methyl vinegar - Ethylene copolymer, k-knife is partial vinyl chloride - 12 201011086 - in toluene containing Yang 2-ethylhexyl ester / _ acid: methyl acrylate / 2-hydroxyethyl acrylate (including The solution of the weight meter 2 vinegar is ls micron (_ coated on a polyester film with a thickness of 100 micrometers (#m) and dried; rubber elastic riding layer. It is a kind of toluene containing 100 parts by weight of (tetra) acid 2-B to protect methacrylic acid methyl s|/acrylic acid 2_ base acetonitrile main pressure adhesive (including 2 parts by weight) Isocyanate cross-linking agent) and a solution of the above-mentioned heat-expandable microspheres in an amount of 25 parts by weight and 10 parts by weight of oil-soluble scented scent and 10 parts by weight of oil-soluble _resin. The thickness of 35 micrometers (#m) is applied to a partitioning material, and the pressure-sensitive adhesive sheet obtained by the adhesive sheet is placed on the side of the rubber-like adhesive (four) side, and rubbery organic elasticity is obtained thereon to obtain _ _ turtle to 4. It is said that the m film is comparable to the warehouse Μ Μ heat expandable microspheres, its 50% average particle size is 9~ (from m), the maximum particle size is 28 microns (#m), its outer shell composition Partial __ene, methyl methacrylate methyl acetonitrile-acrylonitrile copolymer. The knives are partial ones - the benzene contains 2-ethylhexyl acrylate acrylate / m acid ί acid (including 2 parts by weight of polyisocyanuric acid crosslinked 2 2 thickness of 15 μm ("m) coated on a polyester film having a thickness of 1 〇〇 = (. Egg) 'and dried to obtain - Rubber-like elastic viscous/acrylic propylene-containing olefinic agent (containing 2 parts of poly/cyanide _ sympathy 3 = liquid with a dry thickness of 35 microns (five) coated on a branch) and A pressure-sensitive adhesive sheet. The obtained pressure-sensitive adhesive sheet 13 201011086 Rubber: the adhesive layer side, which has a rubber-like organic elastic adhesive layer =, called __ secret adhesive sheet. The microspheres have an average particle diameter of 9 (#m) and a maximum particle size of 28 μm (//m), and the outer shell component is a U-methyl acrylate-acrylonitrile copolymer. #妇甲 It contains propylene in the toluene 2-ethylhexyl (tetra) butyl vinegar / 2 parts by weight of polyisocyanuric acid cross-linking 3 (. (4) H touch, the money is like a rubber ί The viscous mucilage contains (10) parts by weight of 2-ethylhexanoic acid acrylate in toluene (3 parts by weight of polyisocyanate-based cross-linking agent) and 25 parts by weight of hot spheres Solution. The resulting solution is dried to a thickness of = (, coated on a separator and dried to obtain a pressure sensitive ancient /: the resulting pressure-sensitive adhesive sheet is adhered to the rubber-like elastic adhesive layer side, Ii U-gel organic elastic adhesive layer of polyester film to obtain heat-peelable feeling. Comparative Example 3 can be used to smear slightly, and its 5 percent+ time is 9-15 μm. The particle size is 28 μm Um. ) 'The outer shell component is a vinylidene chloride-methyl acrylate-acrylonitrile copolymer. The urethane contains 2~ethyl hexyl acetate / butyl acrylate / propyl acrylate / C in toluene _ 2_ silk (10) (containing 2 parts by weight of polyisophthalide), a layer of dry thickness of 15 microns (coated on :: a vinegar film) and dried to obtain - A plant that contains 100 parts by weight of 2-ethylhexyl acrylate 201011086 squama _ _ _ _ _ _ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ Got the second eye, 丨ίff is stuck in the film
㈣/ϋ·加熱之前，將25微米（_)聚酯薄膜黏貼於該可 黏著片上’測試獅旨薄膜之⑽。剝離強度(黏著 蒌μ 及在實補和比較财所得狀每個感壓黏 者片的可熱分離性。結果顯示於表〗中。 對25微米（μιη)聚醋薄膜事;著力之消丨諸古沐 如下列所述來測量相對於25微米（"m)聚酯薄膜之18〇。 剝離強度(黏著力）（g/25mm)。評估結果顯示於表】之著 (g/25mm)，，欄中。 •耆刀(4)/ϋ· Before heating, a 25 micron (_) polyester film was adhered to the adhesive sheet to test the lion film (10). Peel strength (adhesive 蒌μ and the thermal separability of each pressure-sensitive adhesive sheet in the actual and comparative financial results. The results are shown in the table. For the 25 micron (μιη) vinegar film; Zhu Gumu measured 18 相对 with respect to 25 μm ("m) polyester film as described below. Peel strength (adhesion) (g/25 mm). The evaluation results are shown in the table (g/25mm) ,, in the bar. • Scythe
===幅綱削以得到可 將25微米（//m)聚酯薄膜黏貼於實施例和比較例中所得 到之每個感壓黏著片（25mm寬）的可熱膨脹性感壓黏著層上， 再以2公斤滾輪各來回滾壓一次，静置2〇〜3〇分鐘後，測量 25微米（/zm)聚酯薄膜之18〇。剝離強度(黏著力）(g/25mm)(剝 離速率：30cm/min，溫度23±2ΐ，相對濕度：65±5% RH) 可熱分離性之測試方法 如下列所述來研究其可熱分離性。測量結果顯示於表i 之“微小片狀物殘留比例（％)”攔中。 將一張大小140iraixl40mmxlmin(厚）之陶瓷片暫時固定於 以上實施例和比較例中所得到之可熱剥離型感壓黏著片之感 15 201011086 壓黏著面上，且此組合被裝置並固定於切割平台上，再以刀片 切割為微小片狀物（2mmxlmm)。切割後，將此組合轉置於12〇 °C熱板上並加熱1分鐘，冷卻後，翻轉此組合使陶瓷片向下， 使微小片狀物（2mmxlmm)自然分離，觀察殘留於可熱剥離型感 壓黏著片上之微小片狀物（2ramxlmm)比例。 表1 黏著力（g/25mm) -------^ 微小片狀物 殘留比例(％) 實施例1 430 —一· 0 實施例2 650 0 比較例1 420 20 比較例2 310 15 比較例3 280 10 實施例1、2與比較例1、2、3比較後，我們可以發現， 當可熱膨脹性感壓黏著層包含有可熱膨性微球體（外殼成分為 偏二氯乙稀-甲基丙烯酸曱酯-丙烯腈共聚物）及不含含綾基的 丙烯酸系感壓黏著劑及油溶性樹脂時，經短暫加熱後’該可熱 剥離型感壓黏著片可輕易地與微小片狀物自然分離，而達成本 專利的發明目的。 201011086 【圖式簡單說明】 第1圖為本發明可熱剥離型感壓黏著片之一例之概略斷 面圖。 【主要元件符號說明】 1可熱剥離型感壓黏著片 2基材 3彈性黏著層 4可熱膨脹性感壓黏著層 5分隔材===Augmented to obtain a 25 micron (//m) polyester film adhered to each of the pressure-sensitive adhesive sheets (25 mm wide) obtained in the examples and the comparative examples, on a thermally expandable pressure-sensitive adhesive layer. Roll back and forth again with 2 kg of roller, and let stand for 2 〇 to 3 〇 minutes, then measure 18 25 of 25 μm (/zm) polyester film. Peel strength (adhesion) (g/25mm) (peeling rate: 30cm/min, temperature 23±2ΐ, relative humidity: 65±5% RH) The test method for thermal separation is studied as follows. Sex. The measurement results are shown in the "micro-sheet residual ratio (%)" in Table i. A piece of ceramic piece having a size of 140 iraixl 40 mm x lmin (thickness) was temporarily fixed to the sensible 15 201011086 pressure-adhesive surface of the heat-peelable pressure-sensitive adhesive sheet obtained in the above Examples and Comparative Examples, and the combination was fixed and fixed by cutting. On the platform, the blade is then cut into tiny pieces (2mm x lmm). After cutting, the combination was transferred to a 12 ° C hot plate and heated for 1 minute. After cooling, the combination was turned over to make the ceramic sheet downward, and the micro sheet (2 mm x l mm) was naturally separated, and the residue was observed to be thermally peelable. The ratio of the tiny sheet (2ramxlmm) on the pressure sensitive adhesive sheet. Table 1 Adhesion (g/25mm) -------^ Residual ratio of micro-sheets (%) Example 1 430 - 1.0 Example 2 650 0 Comparative Example 1 420 20 Comparative Example 2 310 15 Comparison Example 3 280 10 After comparing Examples 1, 2 with Comparative Examples 1, 2, and 3, we can find that when the thermally expandable pressure-sensitive adhesive layer contains heat-expandable microspheres (the outer shell component is vinylidene chloride-A) When the decyl acrylate-acrylonitrile copolymer and the fluorenyl-containing acrylic pressure-sensitive adhesive and the oil-soluble resin are not heated, the heat-peelable pressure-sensitive adhesive sheet can be easily combined with the micro-sheet. Naturally separated to achieve the object of the invention. 201011086 [Simplified description of the drawings] Fig. 1 is a schematic cross-sectional view showing an example of a heat-peelable pressure-sensitive adhesive sheet of the present invention. [Main component symbol description] 1 heat-peelable pressure-sensitive adhesive sheet 2 base material 3 elastic adhesive layer 4 heat-expandable elastic pressure-adhesive layer 5 partition material
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