520448 五、發明説明（1 ) [技術領域] 本發明係有關於一種砉 ^ ^ 種表面保濩膜，其係於諸如電腦、 液晶電視機、汽車導航系 m尼，』松 订動電話之顯示器晝面上所 用之偏先板4之加工、I配時供保護用者。， [習知背景] 於偏先板等光學用薄片之加工、裝配時，經常是黏貼 保護膜^防該薄片損傷及污染，並於背面塗抹黏著 劑後進叮乾燥，加上制離膜後，對準所目標之偏光角度後 剪裁，再疊層加以保存。 /當黏貼於該顯示器畫面上時，會施行有高壓鋼等所進 行之加熱處理，因此表面保護膜乃須具備不產生熱收縮之 耐熱性。 在且層保存時，黏附有保護膜之偏先膜係於裝配 時，黏附用之黏著劑乃由端部擠出而污染表面，而妨礙到 外觀檢查作業，或使其等互相黏在一起無法拿取。 由於附著於該保護膜表面上之黏著劑被視為光學用薄 片本身之缺陷，以酒精或酯、酮類等有機溶劑擦拭除去， 或者是藉水洗刷除去該附著物。 原本形成表面保護膜之基材的合成樹脂膜是不具備對 所擠出之黏著劑有離模性。 又’因應需要’為了避開本用途中裝配時之靜電障礙， 而採用有内含或於表面塗覆季銨鹽、多價醇系衍生物等之 水溶性防靜電劑之薄膜，但前述防靜電劑可溶解於用以除 去”亥/亏染物之水或酒精中’而使該劑在洗淨過程中脫落， 本紙張尺度適用中國國家標準（CNS) A4規格（21〇><297公着） -4-520448 V. Description of the Invention (1) [Technical Field] The present invention relates to a surface protection film, such as a computer, an LCD television, and a car navigation system. The processing of the front panel 4 used on the day, and the timing are provided for protection. [Known background] When processing and assembling optical sheets such as polarized boards, it is often to stick a protective film ^ to prevent damage and contamination of the sheet, and then apply adhesive on the back to dry it. After adding a release film, Cut at the polarized light angle of the target, and then stack and save. / When sticking to the display screen, heat treatment by high-pressure steel will be performed, so the surface protection film must have heat resistance that does not cause heat shrinkage. When the layer is stored, the pre-adhesive film with a protective film is attached during assembly. The adhesive used for adhesion is extruded from the end and contaminates the surface, which hinders the appearance inspection operation or makes it impossible to stick together. Take it. Since the adhesive adhered to the surface of the protective film is regarded as a defect of the optical sheet itself, it can be wiped off with an organic solvent such as alcohol, ester, ketone, or the like by washing with water. The synthetic resin film that originally forms the base material of the surface protection film does not have mold release property to the extruded adhesive. In addition, in order to avoid static obstacles during assembly in this application, a film containing a water-soluble antistatic agent containing or coated with a quaternary ammonium salt, a polyvalent alcohol derivative, or the like is used on the surface. The electrostatic agent can be dissolved in the water or alcohol used to remove the "hai / defectives" and cause the agent to fall off during the cleaning process. The paper size applies the Chinese National Standard (CNS) A4 specification (21〇 > < 297 (Public) -4-
.、?τ— (請先閲讀背面之注意事項再填寫本頁) ^20448 A7 ~----------- 五、發明説明（2 ) ^ - 降低防靜電之效果。 為了除去朝該裏面保護膜擠出而附著之黏著劑及防止 (請先閲讀背面之注意事項再填寫本頁) 抗靜電劑之脫落，所以堂# 7 Μ嘗试進订塗敷長鏈烷基胺基甲酸酯 系之所明非聚矽氧系剝離劑，或聚矽氧系離，模劑，但是該 長鏈烧基胺基甲酉夂醋系離模劑，由於離模性不足，反倒無 法輕易除去。 又，聚矽氧系剝離劑具有離模性而易於除去，但在表 面保護膜貼上玻璃紙膠帶，藉該膠帶的黏著性以拉起表面 保遵膜者，在剝離時黏著力過小，而無法掀開等有諸如此 類的問題存在。 本發明係用以解決前述問題點而所創作者，其目的係 於提供一種表面保護膜，其係包含有··剝離膜，係於偏光 板等光學薄片上所用之保護膜之基材的一侧面上隔著黏著 劑層張貼者；及，聚矽氧丙烯酸系梳型接枝狀聚合物層， 係於前述基材之另一侧面上隔著防靜電劑層塗敷者；該聚 石夕氧丙稀酸系梳型接枝狀聚合物層係塗敷有3mg/m2至 1 〇mg/m2範圍作為固形物；藉該保護膜可以防止因偏光板 等光學用薄片之黏著劑擠出而使薄片於疊層時所造成之黏 附’並容易除去表面上所附著之異物者。 換言之，本發明之偏光板等光學用薄片之保護膜之一 特徵為具有一與水之接觸角為80度以上之拒水性，藉此可 讓該保護膜之外層難以附著異物，且同時使藉洗淨水等除 去為容易者。 本發明之偏光板等光學用薄片之保護膜之另一特徵係 本紙張尺度適用中國國家標準（CNS) A4規命（210X297公釐） 520448 A7 _；___ B7___ 五、發明説明（3 ) 酿 ^~ ' 具有一電氣特性，藉此可使事先在保護膜基。材之合成樹脂 膜上施行之防靜電機能，不會在水洗及擦拭等異物除去步 驟中失去，且能維持ΙΟ^Ω/□以下之表面阻力，可防範= 附體上由於靜電所引起之麻煩的發生於未然>。 用以達成前述目的之本發明之方式係於一種表面保護 膜之構成，其係包含有：剝離膜，係於偏光板等光學薄片 上所用之基材的一侧面上隔著黏著劑層張貼者；及，聚矽 氧丙烯酸系梳型接枝狀聚合物層，係於前述基材之另一侧 面上隔著防靜電劑層塗敷者；該聚矽氧丙烯酸系梳型接枝 狀聚合物層係塗敷有3mg/m2至l〇mg/m2範圍内作為固形 物0 又’其中該剝離膜係形成為：利用使用有丙烯酸系黏 著劑之膠帶，使該剝離膜之一側面的剝離強度小於 lN/25mm 者。 進而，其係具有一水對前述基材另一側面之接觸角為 80度以上之拒水性。 該表面保護膜之基材係一雙軸拉伸聚乙烯對苯二甲酸 酯薄膜，該厚度使用16μιη至50μηι範圍内者。 該黏著劑層，塗敷二液硬化型丙烯酸系黏著劑1〇g/m2 至30g/m2範圍内作為固形物，且用jis z_2037(膠帶測試 法）所規定之不鏽製黏附板，塗敷有一剝離阻抗值為〇·〇5Ν /25mm至0.5Ν/25mm範圍之再剝離性黏著劑而形成者。 該表面保護膜之黏著劑層上黏貼有一合成樹脂製剝離 薄片，呈繞捲狀者。 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公楚） 6 _ (請先閲讀背面之注意事項再填窝本頁).,? Τ— (Please read the precautions on the back before filling in this page) ^ 20448 A7 ~ ----------- 5. Description of the invention (2) ^-Reduce the effect of anti-static. In order to remove the adhesive that is adhered to the inner protective film and prevent it (please read the precautions on the back before filling this page), the antistatic agent will fall off, so Tang # 7 Μ try to order a long-chain alkyl coating The urethane-based non-polysiloxane-based release agent, or polysiloxane-based release agent, but the long-chain alkylaminomethyl acetate release agent, due to insufficient release properties, It cannot be removed easily. In addition, polysiloxane-based release agents have mold release properties and are easy to remove. However, those who apply cellophane tape to the surface protection film and use the adhesiveness of the tape to pull up the surface protection film will have too little adhesive force during peeling. There are problems like this. The present invention was created by the present invention to solve the aforementioned problems, and its purpose is to provide a surface protection film, which includes a peeling film, a substrate for a protective film used on optical sheets such as polarizing plates, etc. The adhesive layer is posted on the side surface; and the polysiloxane-based comb-type graft polymer layer is applied on the other side of the substrate with the antistatic agent layer applied thereon. The oxypropylene-based comb-type graft polymer layer is coated with a range of 3 mg / m2 to 10 mg / m2 as a solid; the protective film can prevent extrusion of the adhesive of an optical sheet such as a polarizing plate and the like. Adhesion of the sheet during lamination and easy removal of foreign matter attached to the surface. In other words, one of the protective films for optical sheets such as polarizing plates of the present invention is characterized by having a water-repellent property with a contact angle with water of 80 degrees or more, thereby making it difficult for foreign layers to adhere to the outer layer of the protective film, and at the same time making use of It is easy to remove washing water and the like. Another feature of the protective film of the optical sheet such as the polarizing plate of the present invention is that the paper size applies the Chinese National Standard (CNS) A4 (210X297 mm) 520448 A7 _; ___ B7___ V. Description of the invention (3) ~ 'Has an electrical property, so that it can be based on the protective film in advance. The antistatic function implemented on the synthetic resin film of the material will not be lost in the steps of removing foreign matter such as water washing and wiping, and can maintain the surface resistance below 10 ^ Ω / □, which can prevent the trouble caused by the static electricity on the attached body. 'S happened before then>. The method of the present invention for achieving the aforementioned object is a structure of a surface protection film, which includes a release film, and a poster with an adhesive layer interposed on one side of a substrate used for an optical sheet such as a polarizing plate. ; And a polysiloxane-based comb-type graft polymer layer, which is coated on the other side of the substrate with an antistatic agent layer interposed therebetween; the polysiloxane-based comb-type graft polymer The layer is coated with a solid content in the range of 3 mg / m2 to 10 mg / m2. The release film is formed by using an adhesive tape with an acrylic adhesive to make the peel strength on one side of the release film. Less than lN / 25mm. Furthermore, it has water repellency with a contact angle of water to the other side of the substrate of 80 degrees or more. The substrate of the surface protective film is a biaxially stretched polyethylene terephthalate film, and the thickness is in the range of 16 μm to 50 μm. This adhesive layer is coated with a two-liquid curable acrylic adhesive in the range of 10 g / m2 to 30 g / m2 as a solid, and a stainless adhesive plate specified by jis z_2037 (tape test method) is applied and applied. There is a re-peelable adhesive having a peel resistance value in the range of 0.05N / 25mm to 0.5N / 25mm. A peeling sheet made of synthetic resin is pasted on the adhesive layer of the surface protection film, and it is wound. This paper size applies to China National Standard (CNS) A4 (210X297). _ (Please read the precautions on the back before filling this page)
A7A7
Ο 五、發明説明（4 87[圖式之簡單說明] 截面第圖1圖係顯示本發明實施例之表面保護膜之部分擴大 圖 （M 2(e)圖係顯示習知表面保護膜之部分擴大截面 [圖中元件標號說明] A、A1〜A5 .·.··表面保護膜 ..................聚矽氧丙烯酸系梳型接枝聚合物層 U、lb ..........梳型接枝聚合物 2 .............••…防靜電劑層 3 ..................基材 4 ...................著劑層 5 .................•剝離膜 5a········.........矽系離模劑 5b.................雙軸拉伸聚酯或聚乙烯對苯二曱酸酯 6、7.............離模劑 [本發明之實施形態] 其次，根據圖式說明本發明之表面保護膜之實施例。 第1圖係顯示本發明實施例之表面保護膜A之部分擴大截 面0 該表面保護膜A被採用於諸如電腦及液晶電視機、汽 車導航、行動電話之顯示器畫面上所用之光學用薄片者， 黏貼於該偏光板等之表面保護膜A係使裝配時所附著之黏 (請先閲讀背面之注意事項再填窝本頁) 訂· :線· 本紙張尺度適用中國國家標準（CNS> A4規格（210X297公釐） 五、發明説明（5 ) 著劑等之異物輕易拭去，且，可以溫水洗淨，等除去，同時 藉该等擦拭或溫水洗淨等方法也不會把事先施於該表面保 濩膜上之防靜電劑脫落，形成一具有剝離性、拒水性之防 濩膜，即使在酒精或溫水中擦拭及洗淨，也’能維持防靜電 機能。 然後，該表面保護膜A係於防靜電性合成樹脂膜等之 基材3的一側面上塗敷再剝離性二液硬化型丙烯酸系黏著 劑4後，張貼剝離膜5，而於該基材3之另一侧面（背面） 上則以防靜電劑層2為中介，塗敷由主幹部分為丙烯酸系 聚合物而分枝部分則為聚矽氧大單體所構成之梳型接枝聚 合物層1。 又，前述合成樹脂膜等之基材3係使用諸如聚乙烯或 聚丙烯、聚酯、聚醯亞胺等為原料之薄膜等，其中亦考慮 到使用時之耐熱性，而以雙軸拉伸聚乙烯對苯二甲酸醋為 佳。 基材3之膜厚係於ΐ6μιη〜5〇μηι範圍内者，較佳者則以 於25μιη〜3 8μηι範圍内者為宜。這是因為基材3膜厚未達 16μηι時，太薄，易留有來自外部之突起物之撞擊痕，而 難以保護偏光板外，還難以於無皺紋之狀態下進行黏貼且 剝離作業也難以進行。 又，超過50μιη時，則使剛性過大，而難以均勻黏貼 成沒有浮起之形態，此外，在保護膜之價格構成上，佔大 部分之原版薄膜上花費之費用過多，使保護膜所要求之經 濟面上也有困難。 520448 A7 B7 五、發明説明（6 〇 進而，塗敷於則述另一側面上之梳型接枝聚合物i可 添加異氛酸醋系反應劑後使之硬化者，亦可為無添加用以 反應之硬化劑者。 又’用於本發明實施例之防護膜之聚矽氧丙烯酸系梳 型接枝聚合物層1雖不能行理論上的解讀，即，於使用靜 電層時’為何不能阻礙位居下層之防靜電劑層2之防靜電 能，且，即使施行水洗等嚴苛之處理也可維持機能者，惟， 其塗敷量是微量的，佔3〜l〇mg/m2，因此就算在防靜電層 2上設置絕緣層，只要是薄膜，就不會阻礙其效果，其說 明亦見於曰本專利公報第2939431號。 又’附帶一提的是，該聚矽氧丙烯酸系梳型接枝聚合 物層1之塗敷量係少於3mg/m2時，所製造出來之覆膜強 度很弱’無法抵抗擦拭以及水的洗淨，而與下層之防靜電 劑同時脫落，使表面阻力上昇，於裝配時，會引起靜電障 礙等不當現象。 又，超過1 Omg/m2之塗敷量時，防礙到位於下層之防 靜電劑之機能，且使表面阻力提高，因此不佳。 又，該梳型接枝聚合物1之玻璃轉移點很高，係於60 °C至180°C範圍内者，同時該梳型接枝聚合物1之分枝部 分係以聚矽氧構成，因此具有拒水性，藉傾斜型摩擦測定 器之靜摩擦係數為〇·2至0.4,具有相當之滑動性，且具備 充分的覆膜強度，可於疊層時容易對齊。 進而，再剝離性二液硬化型丙烯酸系黏著劑層4之另 一侧面上係張貼有塗敷碎系離模劑5 a後由雙軸拉伸聚g旨 (請先閲讀背面之注意事項再填寫本頁) _裝· -、訂— :線丨 本紙張尺度適用中國國家標準（⑽）A4規格（210X297公釐） -9- 520448 A7 ---------_ 五、發明説明（7 ) ^-- 或聚乙婦對苯二甲酸醋5 b所構成之剝離膜5。 (請先閱讀背面之注意事項再填寫本頁) 亦即，表面保護膜A係黏附有該剝離膜5，且形成一 捲成圓筒狀之滾筒狀者。 此外，忒剝離膜5係使用丙烯酸系黏著’劑之膠帶，使 该剝離膜5之一侧面（背面）之剝離強度小於iN/25mm而形 成者。 在該剝離膜5上，藉使用丙烯酸系黏著劑之膠帶之剝 離強度在lN/25mm以上時，裁成平板後疊層時，乃使擠出 之黏著劑附著於表面，而被視為偏光板等光學用薄片本身 之缺陷，或使相互黏住，衍生麻煩。又，所附著之黏著劑 係可藉有機溶劑等擦拭，卻不易除去，而留有擦痕。 進而，前述剝離強度小於1N/25mm時，可使被擠出之 黏著劑難以附著，即使附著後也可以有機溶劑簡單地除 去，極少留有擦痕。 又’具有基材3之另一側面與水之接觸角在8〇度以上 之拒水性，而以90度以上者為佳。 該接觸角係小於80度時，背面劑表面容易被水沾濕， 藉於用以除去背面汙染之水洗後之水附著，容易在表面留 下痕跡，又，下層係有防靜電劑時，背面劑與下層之防靜 電劑同時溶解於水中而流出，導致防靜電功能降低，因此 尤以90度以上之接觸角為佳。 設於基材3之一側面之黏著劑層4係一用以使二液硬 化型丙稀酸系黏著劑為固形物，塗敷有10〜3〇g/m2，且以 JIS Z-2037(膠帶試驗法）規定之不鏽製黏附板，並塗敷有一 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 520448 A7 B7 五、發明説明（ 剝離阻抗值為0.05至0.5N/25mm，又以0.1〜〇·3Ν/25 mm 為佳之再剥離性黏著劑。 (請先閲讀背面之注意事項再填寫本頁) 黏著劑塗敷量係小於1 〇g/m2時，黏附體上有凹凸時， 則無法充分附著，導致浮起，而不能作為一保護膜，又， 在本用途之保護功能結束後，剝離阻抗變大，使黏附體弯 折，而降低除去作業效率。 [實施例1] 訂丨 在表面附與季錄鹽20.05g/m2作為防靜電劑且厚度 38μιη之雙軸拉伸聚乙烯對苯二甲酸酯3之一面上塗敷有 以下調製物20g/m2作為固形物，並以80°C乾燥5分鐘； 該調製物為··將2-乙基己基丙烯酸酯/曱基曱基丙稀酸醋/ 乙酸乙婦/經基乙基甲基丙婦酸醋/丙婦酸之各單體以 40/40/16/1/3之重量比進行調合，並用2,2，-偶氮二異丁腈 :線丨 為觸媒’於氮氣流下，在乙酸乙酯中聚合而得到聚合度 Mw = 70至80萬、固形物佔30%之再剝離性丙烯酸系黏著 劑’將該劑與可樂黏L(音譯）以重量比100:3調合而成者。 而於另一面上則塗敷梳型接枝聚合物（東亞合成（股）； 商品名「SYMAC US-270」）5mg/m2，作為固形物，該聚合 物其主幹部分為丙烯酸系聚合物，分枝部分則由佔全體之 30%至40%之聚矽氧大單體所構成，分子量為2〇至3〇萬 者；並以HHTC乾燥5秒鐘，製作一完全融著覆膜。 其次，張貼剝離膜5，該膜是塗敷有聚矽氧系離模劑 5a且以25μιη厚之雙軸拉伸聚酯％為底者，而得到一呈繞 捲狀之表面保護膜A。〇 5. Description of the invention (4 87 [Simplified description of the drawing] Section 1 of the figure is an enlarged view showing a part of the surface protective film of the embodiment of the present invention (M 2 (e) is a part showing a conventional surface protective film Enlarged cross section [Description of element numbers in the figure] A, A1 ~ A5 .. .. Surface protection film ........ Polysilicone comb-type graft polymerization Physical layer U, lb ......... comb-type graft polymer 2 ............ •• ... antistatic agent layer 3 ... ........... substrate 4 ......... coating layer 5 ......... .... • Release film 5a ......... Silicon release agent 5b ........ Biaxial Stretched polyester or polyethylene terephthalate 6, 7, ............ Releasing agent [Embodiment of the present invention] Next, the surface protection of the present invention will be described with reference to the drawings. Example of a film. Figure 1 shows an enlarged cross section of a surface protective film A according to an embodiment of the present invention. The surface protective film A is used for display screens of computers and LCD televisions, car navigation, and mobile phones. For optical sheets, the surface protective film A adhered to the polarizing plate or the like is used. Adhesion attached at the time of reading (please read the precautions on the back before filling in this page) Order:: line · This paper size applies to Chinese national standard (CNS > A4 size (210X297 mm)) 5. Description of the invention (5) Foreign matter such as cleaning agents can be easily wiped off, and it can be washed with warm water and removed. At the same time, the antistatic agent applied on the surface protection film in advance will not fall off by means of such wiping or warm water washing. Form a peel-proof, water-repellent anti-squash film, which can maintain its anti-static function even when wiped and washed in alcohol or warm water. Then, the surface protective film A is based on the base of anti-static synthetic resin film, etc. After applying a re-peelable two-liquid curable acrylic adhesive 4 on one side of the material 3, a release film 5 is attached, and an antistatic agent layer 2 is interposed on the other side (back surface) of the substrate 3. The comb-type graft polymer layer 1 composed of an acrylic polymer as a main part and a polysiloxane as a branched part is applied. In addition, the base material 3 such as the aforementioned synthetic resin film is made of polyethylene. Or polypropylene, polyester, polyimide, etc. as the original In consideration of the heat resistance during use, biaxially stretched polyethylene terephthalate is preferred. The film thickness of the substrate 3 is preferably in the range of 6 μm to 50 μm. It is preferably within the range of 25 μm to 38 μm. This is because when the film thickness of the substrate 3 is less than 16 μm, it is too thin, and it is easy to leave impact marks from external protrusions, and it is difficult to protect the polarizing plate. It is difficult to perform adhesion without wrinkles, and it is difficult to perform the peeling operation. In addition, when it exceeds 50 μιη, the rigidity is too large, and it is difficult to uniformly adhere to the form without floating. In addition, the cost of the protective film, which accounts for most of the cost of the original film, makes the protective film required. There are also economic difficulties. 520448 A7 B7 V. Description of the invention (60) Furthermore, the comb-type graft polymer i coated on the other side of the description can be cured by adding an isocyanate-based reaction agent, or it can be used without addition. The reaction hardening agent. Also, 'the silicone-based acrylic comb-type graft polymer layer 1 used in the protective film of the embodiment of the present invention cannot be theoretically interpreted, that is, when using an electrostatic layer,' why not Those who hinder the antistatic performance of the antistatic agent layer 2 in the lower layer, and who can maintain the function even if subjected to severe treatment such as water washing, etc., but the coating amount is a trace amount, accounting for 3 to 10 mg / m2, Therefore, even if an insulating layer is provided on the antistatic layer 2, as long as it is a thin film, its effect will not be hindered, and its description can be found in Japanese Patent Publication No. 2939431. Incidentally, the polysilicone acrylic comb When the coating amount of the graft polymer layer 1 is less than 3 mg / m2, the strength of the produced film is weak. 'It cannot resist wiping and washing with water. Resistance rises, which may cause static obstacles during assembly. When the amount of coating exceeds 10 mg / m2, the function of the antistatic agent in the lower layer is hindered, and the surface resistance is increased, which is not good. Also, the glass of the comb-type graft polymer 1 is not good. The transfer point is high, which is in the range of 60 ° C to 180 ° C. At the same time, the branched portion of the comb-type graft polymer 1 is composed of polysiloxane, so it has water repellency. The coefficient of static friction is 0.2 to 0.4, which has considerable sliding properties, and has sufficient film strength, which can be easily aligned during lamination. Furthermore, the other side of the re-peelable two-liquid curable acrylic adhesive layer 4 The upper part is posted with the application of the broken mold release agent for 5 years, and the purpose is to biaxially stretch the polyg (please read the precautions on the back before filling in this page) _ 装 ·-、 Order—: Line 丨 This paper size is applicable to China National standard (⑽) A4 specification (210X297 mm) -9- 520448 A7 ---------_ V. Description of the invention (7) ^-or polyethylene terephthalate 5 b Peeling film 5. (Please read the notes on the back before filling this page) That is, the surface protective film A is adhered to the peeling film 5, A roll-shaped roll is formed. In addition, the release film 5 is formed by using an acrylic adhesive tape, and the peel strength of one side (back surface) of the release film 5 is less than iN / 25mm. When the peeling strength of the adhesive film using an acrylic adhesive on the release film 5 is 1N / 25mm or more, when the laminate is cut into a flat plate and laminated, the extruded adhesive is adhered to the surface, and it is regarded as a polarizing plate. Defects such as the optical sheet itself, or mutual adhesion, cause trouble. In addition, the attached adhesive can be wiped with an organic solvent, but it is not easy to remove, leaving scratches. Furthermore, the aforementioned peel strength is less than 1N / At 25mm, it can make it difficult for the adhesive to be extruded. Even after adhesion, it can be easily removed by organic solvents, leaving few scratches. It also has a water-repellent property with a contact angle of the other side of the substrate 3 with water of 80 ° or more, and more preferably 90 ° or more. When the contact angle is less than 80 degrees, the surface of the backing agent is easily wetted with water. The water is used to remove backside contamination, and the water is easily attached to the surface. When the antistatic agent is attached to the lower layer, The agent and the lower layer of antistatic agent are dissolved in water at the same time and flow out, resulting in a reduction in the antistatic function. Therefore, a contact angle of 90 degrees or more is preferred. The adhesive layer 4 provided on one side of the substrate 3 is a solid material for making the two-liquid-curing acrylic adhesive as a solid material, and is coated with 10 to 30 g / m2, in accordance with JIS Z-2037 ( Adhesive board made of stainless steel as specified by the Tape Test Method, and coated with a paper size applicable to Chinese National Standard (CNS) A4 (210X297 mm) 520448 A7 B7 V. Description of the invention (Peel resistance value is 0.05 to 0.5N / 25mm, and then 0.1 ～ 〇 · 3N / 25mm is the best re-peelable adhesive. (Please read the precautions on the back before filling in this page) When the amount of adhesive applied is less than 10 g / m2, When there are irregularities, it cannot be fully adhered, which causes floating and cannot be used as a protective film. In addition, after the protection function of this application is completed, the peel resistance becomes large, the adherend is bent, and the removal operation efficiency is reduced. Example 1] Ordered on the surface of one surface of a biaxially stretched polyethylene terephthalate 3 with a thickness of 38 μm as an antistatic agent and a quarterly salt 20.05 g / m2 is coated on the surface with the following preparation 20 g / m2 as a solid form Material, and dried at 80 ° C for 5 minutes; the preparation is ... 2-ethylhexyl acrylic acid The monomers of / fluorenyl methacrylic acid acetic acid / ethyl acetate / menthyl ethyl methacrylic acid / acetic acid are blended at a weight ratio of 40/40/16/1/3, and 2 , 2, -Azobisisobutyronitrile: Line 丨 is the catalyst 'under nitrogen flow, polymerized in ethyl acetate to obtain a degree of polymerization Mw = 700,000 to 800,000, and 30% solids re-peelable acrylic adhesive Agent 'is prepared by blending this agent with Cola Stick L (transliteration) at a weight ratio of 100: 3. The other side is coated with a comb-type graft polymer (East Asia Synthetic Co., Ltd .; trade name "SYMAC US- 270 ″) 5mg / m2, as a solid, the polymer has an acrylic polymer as its main part and a polysilicone macromonomer that accounts for 30% to 40% of the whole, with a molecular weight of 2%. To 300,000; and dried with HHTC for 5 seconds to make a fully melted film. Secondly, a release film 5 was placed, which was a biaxially coated polysiloxane release agent 5a and a thickness of 25 μm. The stretched polyester% is the bottom, and a surface-protective film A having a winding shape is obtained.
-11- 520448 A7 __B7_ 五、發明説明（9 ) [實施例2] 與前述實施例1同樣，在表面上附有〇〇5g/m2之季銨 鹽2作為防靜電劑之厚度38μηι之雙軸拉伸聚乙烯對苯二 甲酸酯膜3之一面上塗敷有與實施例丨同樣扁黏著劑，而 於另一面上則塗敷有5mg/m2之梳型接枝聚合物（東亞合成 (股），商品名「SYMAC US-352」）1作為固形物，該聚合 物主幹部分為丙烯酸系聚合物，分枝部分由佔全體之2〇% 至30%之聚矽氧大單體所構成，其分子量為2〇至3〇萬者； 並以120°C乾燥5秒鐘，製作一完全融著覆膜。 其次，張貼剝離膜5，該膜塗敷有聚矽氧系離模劑5a 且以25μηι厚之雙轴拉伸聚酯5b為底者；而得到一呈繞捲 狀之表面保護膜A。 [比較例1]第2(a)圖 除了於表面黏附有〇.〇5g/m2之季銨鹽2為防靜電劑之 厚度38μπι之雙軸拉伸聚乙烯對苯二曱酸酯薄膜3上沒有 塗附梳型接枝聚合物外，其餘施以與前述實施例1同樣的 黏著加工，作成表面保護膜Α1。 [比較例2]第2(b)圖 除了塗附玻璃轉移點60°C之梳型接枝聚合物la(東亞 合成（股）公司之商品名「SYMAC US-270」）lmg/m2為固形 物外，其餘施以與前述實施例1同樣之處理，作成表面保 護膜A2。 [比較例3]第2(c)圖 除了塗附玻璃轉移點180°C之梳型接枝聚合物lb(東亞 本紙張尺度適用中國國家標準（CNS) A4規格⑵〇χ297公釐） (請先閲讀背面之注意事項再填寫本頁)-11- 520448 A7 __B7_ V. Description of the invention (9) [Example 2] Same as the above-mentioned Example 1, a quaternary ammonium salt 2 with a thickness of 0.05 g / m2 as an antistatic agent is attached on the surface as a biaxial anti-static agent with a thickness of 38 μηι. One side of the stretched polyethylene terephthalate film 3 was coated with the same flat adhesive as in Example 丨, and the other side was coated with a 5 mg / m2 comb-type graft polymer (East Asia Synthetic Co., Ltd. ), Trade name "SYMAC US-352") 1 as a solid, the polymer main part is an acrylic polymer, and the branched part is composed of polysilicone macromonomer that accounts for 20% to 30% of the total, Those having a molecular weight of 200,000 to 300,000; and dried at 120 ° C for 5 seconds to make a completely melted film. Next, a release film 5 is attached, which is coated with a silicone release agent 5a and a 25 μm-thick biaxially stretched polyester 5b is used as a base; and a surface protection film A is obtained in a roll shape. [Comparative Example 1] In Fig. 2 (a), a biaxially-stretched polyethylene terephthalate film 3 having a thickness of 38 μm was added to the surface with a quaternary ammonium salt of 0.05 g / m2 as an antistatic agent. Except that the comb-type graft polymer was not applied, the rest was subjected to the same adhesion processing as in Example 1 to form a surface protection film A1. [Comparative Example 2] In Figure 2 (b), except for the comb-type graft polymer la with a glass transition point of 60 ° C, 1 mg / m2 is a solid form (trade name of SYMAC US-270). The rest was subjected to the same treatment as in Example 1 to form a surface protective film A2. [Comparative Example 3] Figure 2 (c) Except for the comb-type graft polymer lb with a glass transfer point of 180 ° C (East Asia paper size applies Chinese National Standard (CNS) A4 specifications ⑵χ297 mm) (Please (Read the notes on the back before filling out this page)
520448 A7 B7 五、發明説明（10 合成（股）公司；商品名「SYMAC US-352」）img/m2為固形 物外，其餘施以與前述實施例1同樣之處理，作成表面保 護膜A3。 [比較例4]第2(d)圖 ’ 使用有長鏈烷基胺基甲酸酯系之離模劑6(—方社油脂 (股）公司製；「B羅油（音譯）1010」）為背面離模劑外，其餘 施以與前述實施例1同樣之處理，作成表面保護膜A4。 [比較例5]第2(e)圖 利用通常剝離膜所用之反應型聚矽氧系離模劑7作為 背面離模劑外，其餘施以與前述實施例1同樣之處理，作 成表面保護膜A5。 將前述實施例1及實施例2以及比較例1〜5中作成之 表面保護膜A、A1乃至A5黏附於光學用薄片（偏光板）時 所得到之結果示於後面表1。 亦即，於比較例1之防靜電層上不施與離模劑時，其 滑動性（靜摩擦係數）不佳，並將黏附有表面保護膜之偏光 板剪裁/疊層時，易知將產生阻塞現象，並於背面有擠出黏 著劑時所產生之異物時，藉以除去法之水中的摩擦，而使 該防靜電劑溶解而出，導致靜電的產生。 諸如比較例2、3所示者，離模劑之聚矽氧丙烯酸醋梳 型接枝聚合物之附著量佔〇·1 g/m2，不會比未塗敷時還極 端，但也使拒水性降低，且未能完全除去黏著劑等之異物， 亦使防靜電能降低。 以比較例4中所用之長鏈烷基為主幹即所謂非聚石夕氧 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） -13 - (請先閲讀背面之注意事項再填寫本頁) 訂丨 :線丨 ^2U448 A7 - --—— B7_ 五、發明説明（ll ) ' — — 系離模劑時，固然初期之防止異物附著的能力及拒水性較 佳但在水中為了除去異物而進行擦拭時，則完全使拒水 性消失’同時使表面阻力變大。 這是因為離模劑之覆膜強度及密著性不，夠充分，所以 可推知是由於覆膜脫落，且處於下層之防靜電劑流失所造 成的。 在比較例5中，使用供通常薄膜用離模劑之硬化型聚 石夕氧時’其異物附著防止能及用水洗淨後之拒水性都良 好’但是卻具有一缺點，即因為聚矽氧樹脂本來之物性， 而無法使位於下層之防靜電劑層發揮功能。 又’藉實施例1、2所作成之本發明實施例之表面保護 膜係於光學用薄片黏貼初期及水洗後之異物附著防止能力 上都非常優異，且水洗表面上強固黏著之黏著劑等後，也 不會使該覆膜脫落，而使防靜電劑流失，因此可知能防止： 於光學用薄片進行疊層時由於靜電的產生而吸引塵埃，或 相黏在一起無法剝離之問題的發生。 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） -14- (請先閲讀背面之注意事項再填寫本頁)520448 A7 B7 V. Description of the invention (10 Synthetic (Stock) Co., Ltd .; trade name "SYMAC US-352") img / m2 is a solid, and the rest is treated in the same manner as in Example 1 to form a surface protection film A3. [Comparative Example 4] FIG. 2 (d) 'Using a long-chain alkyl carbamate-based release agent 6 (—Fangshe Oil Co., Ltd .; “B Luo oil (transliteration) 1010”) Except for the release agent on the back side, the rest was treated in the same manner as in Example 1 to form a surface protection film A4. [Comparative Example 5] In Figure 2 (e), a reactive polysiloxane release agent 7 used as a normal release film is used as a back release agent, and the rest is treated in the same manner as in Example 1 to form a surface protective film. A5. Table 1 below shows the results obtained when the surface protective films A, A1, and even A5 prepared in the foregoing Examples 1 and 2 and Comparative Examples 1 to 5 were adhered to an optical sheet (polarizing plate). That is, when the mold release agent is not applied to the antistatic layer of Comparative Example 1, its sliding property (static friction coefficient) is not good, and when a polarizing plate with a surface protective film is cut / laminated, it is easy to know that Blocking phenomenon, and when there is a foreign matter generated when the adhesive is extruded on the back, the friction in the water is removed to dissolve the antistatic agent and cause static electricity. For example, as shown in Comparative Examples 2 and 3, the adhesion amount of the polysiloxane acrylic vinegar-type graft polymer of the release agent accounts for 0.1 g / m2. Water resistance is reduced, and foreign matter such as adhesives cannot be completely removed, which also reduces antistatic performance. The long-chain alkyl group used in Comparative Example 4 is the backbone, which is the so-called non-polysilicone. This paper applies the Chinese National Standard (CNS) A4 specification (210X297 mm). -13-(Please read the precautions on the back before filling (This page) Order 丨: Line 丨 ^ 2U448 A7------- B7_ V. Description of the Invention (ll) '— — When the release agent is used, although the initial ability to prevent foreign matter adhesion and water repellency are better, but in water for When the foreign matter is removed and wiped, the water repellency completely disappears and the surface resistance increases. This is because the film strength and adhesiveness of the release agent are insufficient and sufficient, so it can be presumed that the film is peeled off and the antistatic agent in the lower layer is lost. In Comparative Example 5, when using a hardened polylithium oxygen for a mold release agent for a common film, "the foreign matter adhesion prevention ability and the water repellency after washing with water are good", but it has a disadvantage that it is because of the polysiloxane The inherent properties of the resin do not allow the antistatic agent layer on the lower layer to function. Also, the surface protection film of the embodiment of the present invention made from Examples 1 and 2 is excellent in the ability to prevent the adhesion of foreign matter at the initial stage of optical sheet adhesion and after washing with water, and after the strong adhesive on the water-washed surface, etc. Since the film is not peeled off and the antistatic agent is lost, it can be known that: when the optical sheet is laminated, it can prevent the problem of attracting dust due to the generation of static electricity, or being stuck together and unable to peel off. This paper size applies to China National Standard (CNS) A4 (210X297 mm) -14- (Please read the precautions on the back before filling this page)
520448 A7 B7 五、發明説明（12 ) 表1 例 實施例 比較例 1 2 1 2 3 4 5 防靜電層上之離 模劑 US-270 氺 US-352 氺* — US-270 氺 US-352 冰木 B羅油 1010 剝離用 聚矽氧 塗附量 (mg/m2固形份） 5 5 一 1 1 5 5 靜摩擦係數 (tan0=)※l 0.2 0.33 0.42 0.3 0.35 0.26 0.15 滑動性 良好 良好 不滑動 良好 良好 良好 滑動大 異物附聋 卜性※2 無附著 無附著 附著污染 微附著 微附著 少量附著 無附著 表面拒 水性 常態 不沾性大 不沾性大 全面濕潤 緩慢不沾 緩慢不沾 緩慢不沾 不沾性大 水中摩擦後 不沾性大 不沾性大 部分濕潤 部分濕潤 部分濕潤 全面濕潤 不沾性大 接觸角 (°) 常態 105 100 45 95 95 95 105< 水中摩擦後 90 90 55 75 75 50 105< 防靜電 性 常態 108^ 108^ 108^ 108^ 108^ 108^ 1012< 水中摩擦後 1010^ 1010^ 1012< 1012〈 1012< 1012< 1012< 離模面之丙烯酸 系膠帶之剝離力 (N/25mm)※3 0.2 0.4 8.0 1.0 1.3 2.2 0.04 離模面4 膠帶之 (N/25mm; L橡膠系 剝離力 2.0 3.5 7.5 3.5 4.0 4.0 0.05 黏著力 ※5 (N/25mm) 對SUS 0.13 0.13 0.13 0.13 0.13 0.13 0.1 對偏光 板 0.1 0.1 0.1 0.1 0.1 0.1 0.09 (請先閲讀背面之注意事項再填寫本頁) 、? Γ NS270 * :係一主幹部分為丙烯酸系聚合物、分枝部分為聚 矽氧大單體所構成之梳型聚合物，具有聚矽氧30%至40%之接 枝率，分子量（W)為20至30萬之離模劑（東亞合成（股）公司； 商品名「SYMAC US-270」） NS352 * * :係一主幹部分為丙烯酸系聚合物、分枝部分為 聚矽氧大單體所構成之梳型聚合物，具有聚矽氧20%至30% 之接枝率，分子量（W)為20至30萬之離模劑（東亞合成（股）公 司；商品名「SYMAC US-352」） ※1 : PET薄膜及離模處理面 ※2 :疊層10牧施有離模處理之保護膜後再剪裁，將該切 口對該保護膜背面擦拭5次，藉目視以確認黏著劑之移 行及轉黏現象 ※3:曰東電工（股）公司製之31B膠帶 ※斗：市售玻璃膠帶 ※5:以JIS-Z-023 7為基準且以拉扯速度300mm/min由黏附 體之剝離阻抗值 -15- 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 520448 、發明説明（13 ) 依前述構成之本發明，使用本發明之表面保護膜，在 進行依預定尺寸下裁剪及疊層保存時，可減少裝配用黏著 劑等擠出時導致保護膜表面之污染，且大幅減少光學用薄 片上誤認為黏附體之缺陷，同時以水或酒精’等擦拭及洗淨 業已黏著之黏著劑等，位於表層之聚矽氧丙烯酸酯梳型聚 合物層可形成一防護壁，不會使於採用下層之防靜電層時 該防靜電層流失者。 因此可維持防污或抗靜電之機能，且展現可將偏光板 其他方面之生產性提高等之特有效果。 (請先閱讀背面之注意事項再填寫本頁)520448 A7 B7 V. Description of the invention (12) Table 1 Examples Examples Comparative Examples 1 2 1 2 3 4 5 Release agent on antistatic layer US-270 氺 US-352 氺 * — US-270 氺 US-352 ice Wood B Luo oil 1010 Polysiloxane coating for peeling (mg / m2 solid content) 5 5 1 1 5 5 Static coefficient of friction (tan0 =) ※ l 0.2 0.33 0.42 0.3 0.35 0.26 0.15 Good sliding property, good non-slip property Good sliding large foreign matter with deafness ※ 2 No adhesion No adhesion adhesion pollution Micro adhesion Micro adhesion Small adhesion No adhesion Surface water repellency Normal non-sticking Large non-sticking Wet slow non-sticking slow Non-sticking slow Non-sticking non-sticking Non-sticking after rubbing in large water. Non-sticking. Most of the wet part. Wet part. Fully wet. Non-sticking. Large contact angle (°) Normal. 105 100 45 95 95 95 105 < After rubbing in water 90 90 55 75 75 50 105 < Static normality 108 ^ 108 ^ 108 ^ 108 ^ 108 ^ 108 ^ 1012 < After friction in water 1010 ^ 1010 ^ 1012 < 1012 〈1012 < 1012 < 1012 < Peel force of acrylic tape from mold surface (N / 25mm) ※ 3 0.2 0.4 8.0 1.0 1 .3 2.2 0.04 Release surface 4 (N / 25mm; L rubber peeling force 2.0 3.5 7.5 3.5 4.0 4.0 0.05 Adhesive force * 5 (N / 25mm) for SUS 0.13 0.13 0.13 0.13 0.13 0.13 0.1 3 for polarizing plate 0.1 0.1 0.1 0.1 0.1 0.1 0.09 (Please read the precautions on the back before filling out this page),? Γ NS270 *: It is a comb-type polymerization composed of a main part composed of acrylic polymer and branched part composed of polysiloxane. Material, with a grafting ratio of polysiloxane of 30% to 40%, and a mold release agent having a molecular weight (W) of 200,000 to 300,000 (East Asia Synthetic Co., Ltd .; trade name "SYMAC US-270") NS352 * *: It is a comb polymer composed of an acrylic polymer with a backbone and a polysiloxane macrobranched branch. It has a graft ratio of 20% to 30% and a molecular weight (W) of 20 to 30. Wanzhi release agent (East Asia Synthetic Co., Ltd .; trade name "SYMAC US-352") ※ 1: PET film and release surface ※ 2: Laminate 10 protective films with release treatment before laminating , Wipe the back of the protective film 5 times with this incision, and visually confirm the migration and tackiness of the adhesive ※ 3: Yuedong Electric 31B tape made by the company ※ Bucket: commercially available glass tape ※ 5: Peeling resistance value from the adherend based on JIS-Z-023 7 and a pulling speed of 300mm / min-15- This paper is applicable to China Standard (CNS) A4 specification (210X297 mm) 520448, description of the invention (13) According to the present invention constituted as described above, the surface protection film of the present invention is used, and when cutting and stacking storage according to a predetermined size, the use of assembly can be reduced. Adhesives cause contamination on the surface of the protective film when squeezed out, and greatly reduce the defects of the adhesive body on the optical sheet. At the same time, the adhesive that is already on the surface is wiped and washed with water or alcohol. The oxyacrylate comb-type polymer layer can form a protective wall, so that the antistatic layer will not be lost when the lower antistatic layer is used. Therefore, the antifouling or antistatic function can be maintained, and the unique effect of improving productivity of other aspects of the polarizing plate can be exhibited. (Please read the notes on the back before filling this page)
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