TWI580747B - Peeling film for antistatic surface protection film - Google Patents
Peeling film for antistatic surface protection film Download PDFInfo
- Publication number
- TWI580747B TWI580747B TW105108764A TW105108764A TWI580747B TW I580747 B TWI580747 B TW I580747B TW 105108764 A TW105108764 A TW 105108764A TW 105108764 A TW105108764 A TW 105108764A TW I580747 B TWI580747 B TW I580747B
- Authority
- TW
- Taiwan
- Prior art keywords
- film
- release
- antistatic
- layer
- protective film
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Description
本發明涉及一種貼合於偏光板、相位差板、顯示器用透鏡膜等光學零件(下面,有時也稱“光學用膜”)的表面的表面保護膜。更詳細而言,本發明提供一種對被黏附體的污染少的表面保護膜、進而具有無經時劣化的優良的抗剝離靜電性能的表面保護膜、以及貼合有該表面保護膜的光學零件。 The present invention relates to a surface protective film which is bonded to a surface of an optical component such as a polarizing plate, a phase difference plate, or a lens film for a display (hereinafter sometimes referred to as "optical film"). More specifically, the present invention provides a surface protective film having less contamination to an adherend, an excellent surface resist film having excellent anti-peeling performance without deterioration over time, and an optical component to which the surface protective film is bonded .
目前,當製造、搬運偏光板、相位差板、顯示器用透鏡膜、防反射膜、硬塗膜、觸摸面板用透明導電膜等的光學用膜、以及使用了它們的顯示器等光學產品時,藉由在該光學用膜的表面貼合表面保護膜而防止後續步驟中的表面污染、刮傷。為了節省對表面保護膜進行剝離後再進行貼合的勞力和時間從而提高作業效率,對作為產品的光學用膜的外觀檢查而言,有時也在光學用膜上貼合著表面保護膜的狀態下直接實施。 At present, when manufacturing and transporting optical films such as a polarizing plate, a retardation film, a lens film for a display, an antireflection film, a hard coat film, and a transparent conductive film for a touch panel, and an optical product such as a display using the same, The surface protective film is bonded to the surface of the optical film to prevent surface contamination or scratching in the subsequent step. In order to save labor and time after peeling the surface protective film and to improve work efficiency, the surface film may be bonded to the optical film for visual inspection of the optical film as a product. Direct implementation in the state.
從以往以來,在光學產品的製造步驟中,為了防止傷痕、污垢的附著,通常使用在基材膜的單面設置了黏結劑層的表面保護膜。表面保護膜是藉由微黏結力的黏結劑層被貼合於光學用膜上。將黏結劑層設定為微黏結力的原因在於,為了將使用完畢的表面保護膜從光學用膜表面剝離而去除時能 夠容易地進行剝離,並且為了防止黏結劑附著並殘留在作為被黏附體的產品的光學用膜上的現象(所謂的防止黏結劑殘留的發生)。 Conventionally, in order to prevent the adhesion of scratches and dirt in the manufacturing process of an optical product, a surface protective film in which a binder layer is provided on one surface of a base film is generally used. The surface protective film is bonded to the optical film by a micro-adhesive adhesive layer. The reason why the adhesive layer is set to the micro-adhesive force is that it can be removed in order to remove the used surface protective film from the surface of the optical film. Peeling is easy enough, and in order to prevent the adhesion of the adhesive and remaining on the optical film of the product as the adherend (so-called prevention of the occurrence of the adhesive residue).
近年來,在液晶顯示面板的生產步驟中,由於將貼合於光學用膜上的表面保護膜剝離而去除時產生的剝離靜電壓,會破壞用於控制液晶顯示器的顯示畫面的驅動IC等電路零件,還有液晶分子的取向會損傷,雖然這些現象發生的件數少但也在發生。 In the production process of the liquid crystal display panel, the peeling static voltage generated when the surface protective film attached to the optical film is peeled off and removed is destroyed, and the circuit such as the driving IC for controlling the display screen of the liquid crystal display is destroyed. The orientation of the parts, as well as the liquid crystal molecules, can be damaged, although the number of occurrences of these phenomena is small but also occurs.
另外,為了減少液晶顯示面板的電耗,液晶材料的驅動電壓趨於降低,隨之驅動IC的擊穿電壓也趨於降低。最近,要求將剝離靜電壓控制在+0.7kV~-0.7kV的範圍內。 In addition, in order to reduce the power consumption of the liquid crystal display panel, the driving voltage of the liquid crystal material tends to decrease, and accordingly, the breakdown voltage of the driving IC tends to decrease. Recently, it has been required to control the peeling static voltage in the range of +0.7 kV to -0.7 kV.
另外,近年來,伴隨著3D顯示器(立體視覺顯示器)的普及,有在偏光板等光學用膜的表面貼合FPR(圖案相位差膜,Film Patterned Retarder)膜的情況。剝離在偏光板等光學用膜的表面所貼合的表面保護膜後,再貼合FPR膜。但是,當偏光板等的光學用膜表面被表面保護膜中使用的黏結劑、抗靜電劑所污染時,存在難以黏貼FPR膜的問題。因此,對該用途上使用的表面保護膜而言,要求其對被黏附體的污染少。 In addition, in recent years, with the spread of 3D displays (stereoscopic displays), FPR (Film Patterned Retarder) films are bonded to the surface of an optical film such as a polarizing plate. After peeling off the surface protection film bonded to the surface of the optical film, such as a polarizing plate, the FPR film is bonded. However, when the surface of the optical film such as a polarizing plate is contaminated by a binder or an antistatic agent used in the surface protective film, there is a problem that it is difficult to adhere the FPR film. Therefore, the surface protective film used for this use is required to have less contamination of the adherend.
另一方面,在一些液晶面板製造廠商中,作為表面保護膜對被黏附體的污染性的評價方法,是採用如下方法:先對偏光板等的光學用膜上貼合的表面保護膜進行剝離,在混入了氣泡的狀態下進行再貼合,對再貼合後的物件在規定條件下進行加熱處理,然後剝離表面保護膜並觀察被黏附體的表面。在這種評價方法中,即使被黏附體的表面污染是微量的, 但若在混入氣泡的部分與表面保護膜的黏結劑相接觸的部分之間存在被黏附體表面污染的差異,則會作為氣泡痕跡(有時也稱作“氣泡污痕”)殘留。因此,作為對被黏附體表面的污染性的評價方法,會是非常嚴格的評價方法。近年來,根據以這種嚴格的評價方法進行判定的結果,也需要對被黏附體的表面污染性方面沒有問題的表面保護膜。 On the other hand, in some liquid crystal panel manufacturers, as a method of evaluating the contamination of the adherend by the surface protective film, a method of peeling off the surface protective film bonded to the optical film such as a polarizing plate is first employed. The film is re-bonded in a state in which air bubbles are mixed, and the re-bonded article is subjected to heat treatment under predetermined conditions, and then the surface protective film is peeled off and the surface of the adherend is observed. In this evaluation method, even if the surface contamination of the adherend is trace amount, However, if there is a difference in contamination of the surface of the adherend between the portion where the bubble is mixed and the portion of the surface protective film which is in contact with the binder, it may remain as a bubble mark (sometimes referred to as "bubble stain"). Therefore, as a method of evaluating the contamination of the surface of the adherend, it is a very strict evaluation method. In recent years, according to the result of the determination by such a strict evaluation method, a surface protective film which has no problem in surface contamination of the adherend is required.
為了防止從作為被黏附體的光學用膜上剝離表面保護膜時因剝離靜電壓高所引起的缺陷,有人提出了一種表面保護膜,其使用了含有用於降低剝離靜電壓的抗靜電劑的黏結劑層。 In order to prevent defects caused by high peeling static voltage when the surface protective film is peeled off from the optical film as the adherend, a surface protective film using an antistatic agent for reducing the peeling static voltage has been proposed. Adhesive layer.
例如,在專利文獻1中,公開了一種使用由烷基三甲基銨鹽、含羥基的丙烯酸類聚合物、聚異氰酸酯組成的黏結劑的表面保護膜。 For example, Patent Document 1 discloses a surface protective film using a binder composed of an alkyltrimethylammonium salt, a hydroxyl group-containing acrylic polymer, or a polyisocyanate.
另外,在專利文獻2中,公開了一種由離子性液體和酸值為1.0以下的丙烯酸聚合物組成的黏結劑組合物、以及使用了該組合物的黏結片類。 Further, Patent Document 2 discloses a binder composition composed of an ionic liquid and an acrylic polymer having an acid value of 1.0 or less, and a binder sheet using the composition.
另外,在專利文獻3中,公開了一種由丙烯酸聚合物、聚醚多元醇化合物、藉由陰離子吸附性化合物處理過的鹼金屬鹽組成的黏結劑組合物、以及使用了該組合物的表面保護膜。 Further, Patent Document 3 discloses a binder composition composed of an acrylic polymer, a polyether polyol compound, an alkali metal salt treated with an anion-adsorbing compound, and surface protection using the composition. membrane.
另外,在專利文獻4中,公開了一種由離子性液體、鹼金屬鹽、玻璃化轉變溫度為0℃以下的聚合物組成的黏結劑組合物、以及使用了該組合物的表面保護膜。 Further, Patent Document 4 discloses a binder composition comprising an ionic liquid, an alkali metal salt, a polymer having a glass transition temperature of 0 ° C or lower, and a surface protective film using the composition.
【專利文獻1】:日本特開2005-131957號公報 [Patent Document 1]: JP-A-2005-131957
【專利文獻2】:日本特開2005-330464號公報 [Patent Document 2]: JP-A-2005-330464
【專利文獻3】:日本特開2005-314476號公報 [Patent Document 3]: JP-A-2005-314476
【專利文獻4】:日本特開2006-152235號公報 [Patent Document 4]: JP-A-2006-152235
上述專利文獻1~4中,是在黏結劑層內部添加有抗靜電劑。但是,黏結劑層的厚度越厚,並且隨著貼合於被黏附體上後的時間推移,抗靜電劑從黏結劑層向表面保護膜所貼合的被黏附體移動的量會越多。當抗靜電劑向被黏附體移動的量增多時,作為被黏附體的光學用膜的外觀品質降低;或者,在貼合FPR膜時,存在FPR膜的黏接性降低的可能性。 In the above Patent Documents 1 to 4, an antistatic agent is added to the inside of the binder layer. However, the thicker the thickness of the adhesive layer, and the more the amount of movement of the antistatic agent from the adhesive layer to the adherend adhered to the surface protective film, as time passes after adhering to the adherend. When the amount of the antistatic agent moving to the adherend is increased, the appearance quality of the optical film as the adherend is lowered. Alternatively, when the FPR film is bonded, the adhesiveness of the FPR film may be lowered.
為了減少此時從黏結劑層移向被黏附體的抗靜電劑的經時變化,若降低黏結劑層的厚度,則會產生其它問題。例如,當用於為了防止眩目而施加防眩光處理後的偏光板等表面有凹凸的光學用膜時,黏結劑層無法迎合光學用膜表面的凹凸而混入氣泡,或者,由於光學用膜與黏結劑的黏接面積減少而降低黏結力,在使用中會存在表面保護膜發生分離或剝落的問題。 In order to reduce the temporal change of the antistatic agent which moves from the adhesive layer to the adherend at this time, if the thickness of the adhesive layer is lowered, other problems may occur. For example, when an optical film having irregularities on the surface such as a polarizing plate after the anti-glare treatment is applied to prevent glare, the adhesive layer cannot meet the irregularities on the surface of the optical film to mix air bubbles, or the optical film and The bonding area of the binder is reduced to lower the bonding force, and there is a problem that the surface protective film is separated or peeled off during use.
因此,需要一種在光學用膜中使用的表面保護膜,其對表面上有凹凸的光學用膜也能夠使用,對被黏附體的污染非常少、且對被黏附體的污染性沒有經時變化,並且,還能夠抑低從被黏附體剝離表面保護膜時的剝離靜電壓的表面 保護膜。 Therefore, there is a need for a surface protective film for use in an optical film which can be used for an optical film having irregularities on the surface, which has little contamination to the adherend and no change with time on the contamination of the adherend. And, it is also possible to suppress the surface of the peeling static voltage when the surface protective film is peeled off from the adherend Protective film.
本發明人等對該課題進行了精心研究。 The inventors of the present invention have carefully studied this subject.
為了減少對被黏附體的污染並且也減少污染性的經時變化,需要降低被推測對被黏附體造成污染的抗靜電劑成分的量。但是,當降低抗靜電劑成分的量時,會導致從被黏附體上剝離表面保護膜時的剝離靜電壓變高。於是,本案發明人等研究了在不增加抗靜電劑成分的絕對量的情況下抑低從被黏附體上剝離表面保護膜時的剝離靜電壓的方法。 In order to reduce the contamination of the adherend and also reduce the temporal change of the contamination, it is necessary to reduce the amount of the antistatic agent component which is presumed to be contaminated by the adherend. However, when the amount of the antistatic agent component is lowered, the peeling static voltage when the surface protective film is peeled off from the adherend becomes high. Then, the inventors of the present invention have studied a method of suppressing the peeling static voltage when the surface protective film is peeled off from the adherend without lowering the absolute amount of the antistatic agent component.
其結果發現,不在黏結劑組合物中添加抗靜電劑並進行混合而形成黏結劑層,而是塗布黏結劑組合物並進行乾燥而層疊黏結劑層後,藉由對黏結劑層表面賦予適量的抗靜電劑成分,能夠抑低從作為被黏附體的光學用膜上剝離表面保護膜時的剝離靜電壓,並基於上述發現完成了本發明。 As a result, it was found that an antistatic agent is not added to the binder composition and mixed to form a binder layer, but the binder composition is applied and dried to laminate the binder layer, and an appropriate amount is applied to the surface of the binder layer. The antistatic agent component can suppress the peeling static voltage when the surface protective film is peeled off from the optical film as the adherend, and the present invention has been completed based on the above findings.
本發明就是鑒於上述情況而完成的,其課題在於,提供一種對表面上有凹凸的光學用膜也能夠使用且對被黏附體的污染少,並且對被黏附體的低污染性不會因時間推移而發生變化的表面保護膜,進而具有無經時劣化的優良的抗剝離靜電性能的表面保護膜,以及使用了該表面保護膜的光學零件。 The present invention has been made in view of the above circumstances, and it is an object of the invention to provide an optical film having irregularities on its surface, which is less likely to be used for contamination of an adherend, and which is less polluting to the adherend. A surface protective film which changes in progress and further has an excellent surface resisting film which is resistant to peeling deterioration and has an anti-peeling electrostatic property, and an optical component using the surface protective film.
為了解決上述課題,本發明的表面保護膜的技術思想在於,在塗布黏結劑組合物並進行乾燥而層疊黏結劑層後,對該黏結劑層的表面賦予適量的抗靜電劑,由此,能夠抑低對被黏附體的污染性,而且能夠抑低從作為被黏附體的光學 用膜上剝離時的剝離靜電壓。 In order to solve the above problems, the technical concept of the surface protective film of the present invention is to apply an appropriate amount of an antistatic agent to the surface of the adhesive layer after the adhesive composition is applied and dried to laminate the adhesive layer. Reduces the contamination of the adherend, and can suppress the optics from being adhered The peeling static voltage at the time of peeling off the film.
為了解決上述課題,本發明提供一種表面保護膜,其是在由具有透明性的樹脂構成的基材膜的單面上形成有黏結劑層、並在該黏結劑層上貼合了具有剝離劑層的剝離膜的表面保護膜,其中,該剝離膜是在樹脂膜的單面上層疊剝離劑層而成,該剝離劑層含有以二甲基聚矽氧烷作為主要成分的剝離劑以及與該剝離劑不發生反應的抗靜電劑,前述抗靜電劑的成分是熔點小於30℃的離子性化合物,前述抗靜電劑成分從前述剝離膜向前述黏結劑層的表面轉移,從而能夠減少從被黏附體剝下前述黏結劑層時的剝離靜電壓。 In order to solve the above problems, the present invention provides a surface protective film in which a binder layer is formed on one surface of a base film composed of a resin having transparency, and a release agent is bonded to the binder layer. a surface protective film of a release film in which a release agent layer is formed on one surface of a resin film, and the release agent layer contains a release agent containing dimethyl polysiloxane as a main component and An antistatic agent that does not react with the release agent, wherein the component of the antistatic agent is an ionic compound having a melting point of less than 30 ° C, and the antistatic agent component is transferred from the release film to the surface of the binder layer, thereby reducing the amount of the agent The peeling static voltage when the adhesive body peels off the aforementioned adhesive layer.
另外,較佳為前述黏結劑層是使(甲基)丙烯酸酯共聚物交聯而成。 Further, it is preferred that the binder layer be formed by crosslinking a (meth) acrylate copolymer.
另外,較佳為從前述黏結劑層剝離前述剝離膜時的剝離力為0.2N/50mm以下。 Moreover, it is preferable that the peeling force at the time of peeling the said peeling film from the said adhesive agent layer is 0.2 N / 50 mm or less.
另外,本發明提供一種光學零件,其貼合有上述表面保護膜。 Further, the present invention provides an optical component to which the above surface protective film is bonded.
本發明的表面保護膜對被黏附體的污染少,並且對被黏附體的低污染性不會因時間推移而發生變化。另外,基於本發明的表面保護膜,即使被黏附體是AG偏光板等的表面有凹凸的光學用膜也能夠使用。另外,基於本發明,能夠提供一種可抑低從作為被黏附體的光學用膜上剝離時發生的剝離靜電壓、並具有無經時劣化的優良的抗剝離靜電性能的表面保護膜,以及使用該表面保護膜的光學零件。 The surface protective film of the present invention has less contamination of the adherend, and the low contamination of the adherend does not change over time. In addition, the surface protective film of the present invention can be used even if the adherend is an optical film having irregularities on the surface of an AG polarizing plate or the like. Further, according to the present invention, it is possible to provide a surface protective film which can suppress the peeling static voltage which occurs when peeling off from the optical film as the adherend, and which has excellent anti-peeling electrostatic properties without deterioration with time, and The optical component of the surface protective film.
基於本發明的表面保護膜,能夠確實地保護光學用膜表面,因此能夠實現生產效率的提高和成品率的提高。 According to the surface protection film of the present invention, the surface of the optical film can be reliably protected, so that the production efficiency can be improved and the yield can be improved.
1‧‧‧基材膜 1‧‧‧Base film
2‧‧‧黏結劑層 2‧‧‧Binder layer
3‧‧‧樹脂膜 3‧‧‧ resin film
4‧‧‧剝離劑層 4‧‧‧ Stripper layer
5‧‧‧剝離膜 5‧‧‧Release film
7‧‧‧抗靜電劑 7‧‧‧Antistatic agent
8‧‧‧被黏附體(光學零件) 8‧‧‧Adhered body (optical parts)
10‧‧‧表面保護膜 10‧‧‧Surface protection film
11‧‧‧剝下剝離膜後的表面保護膜 11‧‧‧Surface protection film after peeling off the film
20‧‧‧貼合了表面保護膜的光學零件 20‧‧‧Optical parts with surface protection film
圖1是表示本發明的表面保護膜的概念的剖面圖。 Fig. 1 is a cross-sectional view showing the concept of a surface protective film of the present invention.
圖2是表示從本發明的表面保護膜上剝下剝離膜的狀態的剖面圖。 Fig. 2 is a cross-sectional view showing a state in which a release film is peeled off from the surface protection film of the present invention.
圖3是表示本發明的光學零件的一實施例的剖面圖。 Fig. 3 is a cross-sectional view showing an embodiment of an optical component of the present invention.
下面,基於實施方式詳細說明本發明。 Hereinafter, the present invention will be described in detail based on embodiments.
圖1是表示本發明的表面保護膜的概念的剖面圖。該表面保護膜10是在透明基材膜1的單面的表面形成有黏結劑層2。在該黏結劑層2的表面上貼合有剝離膜5,該剝離膜5是在樹脂膜3的表面形成剝離劑層4而成。 Fig. 1 is a cross-sectional view showing the concept of a surface protective film of the present invention. In the surface protection film 10, the adhesive layer 2 is formed on the surface of one surface of the transparent base film 1. A release film 5 is formed on the surface of the adhesive layer 2, and the release film 5 is formed by forming a release agent layer 4 on the surface of the resin film 3.
作為在本發明的表面保護膜10中使用的基材膜1,使用由具有透明性和撓性的樹脂構成的基材膜。由此,能夠在將表面保護膜貼合于作為被黏附體的光學零件的狀態下實施光學零件的外觀檢查。用作基材膜1的由具有透明性的樹脂構成的膜,較佳為使用聚對苯二甲酸乙二醇酯、聚萘二甲酸乙二醇酯、聚間苯二甲酸乙二醇酯(polyethylene isophthalate)、聚對苯二甲酸丁二醇酯等聚酯膜。作為該膜只要具有所需強度且具有光學適應性即可,除了聚酯膜以外也可以使用由其它樹脂構成的膜。基材膜1既可以是未拉伸膜,也可以是被施以單軸拉伸或雙軸拉伸的膜。另外,也可以將拉伸 膜的拉伸倍率、拉伸膜的伴隨晶體化所形成的軸方向的取向角度控制在特定值。 As the base film 1 used in the surface protective film 10 of the present invention, a base film composed of a resin having transparency and flexibility is used. Thereby, the visual inspection of the optical component can be performed in a state where the surface protective film is bonded to the optical component as the adherend. As the film made of the transparent resin used as the base film 1, polyethylene terephthalate, polyethylene naphthalate, and polyethylene isophthalate are preferably used. Polyester film such as polyethylene isophthalate) or polybutylene terephthalate. As the film, as long as it has a desired strength and is optically compatible, a film made of another resin may be used in addition to the polyester film. The base film 1 may be an unstretched film or a film subjected to uniaxial stretching or biaxial stretching. Alternatively, you can stretch The stretching ratio of the film and the orientation angle in the axial direction formed by the crystallization of the stretched film are controlled to specific values.
對本發明的表面保護膜10中使用的基材膜1的厚度而言,並沒有特別的限定,例如,較佳為12~100μm左右的厚度;若為20~50μm左右的厚度則易於操作,因此更理想。 The thickness of the base film 1 used in the surface protection film 10 of the present invention is not particularly limited. For example, it is preferably a thickness of about 12 to 100 μm, and if it is about 20 to 50 μm, it is easy to handle. More ideal.
另外,根據需要,可在基材膜1的與形成有黏結劑層2的面相反側的面上,設置用於防止表面污染的防污層、抗靜電層、防止刮傷的硬塗層等。另外,在基材膜1的表面,也可以實施基於電暈放電進行的表面改性、底塗劑的塗抹等易黏接化處理。 Further, if necessary, an antifouling layer for preventing surface contamination, an antistatic layer, and a hard coat layer for preventing scratching may be provided on the surface of the base film 1 opposite to the surface on which the adhesive layer 2 is formed. . Further, on the surface of the base film 1, an easy adhesion treatment such as surface modification by corona discharge or application of a primer may be performed.
另外,對本發明的表面保護膜10中使用的黏結劑層2而言,只要是在被黏附體的表面進行黏接、使用完畢後可簡單地剝下並且難以污染被黏附體的黏結劑層即可,並沒有特別限定,但考慮到在光學用膜上貼合後的耐久性等,通常採用使(甲基)丙烯酸酯共聚物交聯而成的黏結劑層。 Further, the adhesive layer 2 used in the surface protective film 10 of the present invention is a binder layer which can be easily peeled off after being used and adhered to the surface of the adherend, and which is difficult to contaminate the adherend. However, it is not particularly limited, but a binder layer obtained by crosslinking a (meth) acrylate copolymer is usually used in consideration of durability and the like after bonding on an optical film.
作為(甲基)丙烯酸酯共聚物,可以舉出將主要單體與共聚用單體、官能性單體、含有聚氧化亞烷基的單體進行共聚而成的共聚物,其中,該主要單體可舉出丙烯酸正丁酯、丙烯酸2-乙基己酯、丙烯酸異辛酯、丙烯酸異壬酯等;該共聚用單體可舉出丙烯腈、乙酸乙烯酯、甲基丙烯酸甲酯、丙烯酸乙酯等;該官能性單體可舉出丙烯酸、甲基丙烯酸、丙烯酸羥乙酯、丙烯酸羥丁酯、甲基丙烯酸縮水甘油酯、N-羥甲基甲基丙烯醯胺等;該含有聚氧化亞烷基的單體可舉出甲氧基聚乙二醇甲基丙烯酸酯等。(甲基)丙烯酸酯共聚物中,主要單體和其它 單體均可以為(甲基)丙烯酸酯,也可以作為主要單體以外的單體,含有一種或兩種以上的除了(甲基)丙烯酸酯以外的單體。除了主要單體以外的其它單體,可從上述共聚用單體、官能性單體、含有聚氧化亞烷基的單體等中選擇,並沒有特別的限定。 The (meth) acrylate copolymer may, for example, be a copolymer obtained by copolymerizing a main monomer with a comonomer, a functional monomer, or a polyoxyalkylene-containing monomer, wherein the main single Examples of the compound include n-butyl acrylate, 2-ethylhexyl acrylate, isooctyl acrylate, isodecyl acrylate, and the like; examples of the comonomer include acrylonitrile, vinyl acetate, methyl methacrylate, and acrylic acid. Ethyl ester or the like; the functional monomer may, for example, be acrylic acid, methacrylic acid, hydroxyethyl acrylate, hydroxybutyl acrylate, glycidyl methacrylate, N-methylol methacrylamide or the like; The monomer of the oxyalkylene group may, for example, be methoxypolyethylene glycol methacrylate or the like. Among the (meth) acrylate copolymers, the main monomers and others Each of the monomers may be a (meth) acrylate or a monomer other than the main monomer, and one or two or more monomers other than the (meth) acrylate may be contained. The monomer other than the main monomer can be selected from the above comonomer, a functional monomer, a polyoxyalkylene group-containing monomer, and the like, and is not particularly limited.
對添加於黏結劑層2中的固化劑而言,作為使(甲基)丙烯酸酯共聚物交聯的交聯劑,可以舉出異氰酸酯化合物、環氧化合物、三聚氰胺化合物、金屬螯合物等。另外,作為增黏劑,可以舉出松香類、香豆酮-茚類、萜烯類、石油類、酚類等。 The curing agent to be added to the binder layer 2 may, for example, be an isocyanate compound, an epoxy compound, a melamine compound, a metal chelate compound or the like as a crosslinking agent for crosslinking the (meth) acrylate copolymer. Further, examples of the tackifier include rosins, coumarone-oximes, terpenes, petroleums, and phenols.
對本發明的表面保護膜10中使用的黏結劑層2的厚度,並沒有特別的限定,例如,較佳為5~40μm左右的厚度,更佳為10~30μm左右的厚度。另外,當為表面保護膜對被黏附體表面的剝離強度(黏結力)是0.03~0.3N/25mm左右的、具有微黏結力的黏結劑層2時,從被黏附體上剝離表面保護膜時的操作性優良,因此較理想。另外,基於從表面保護膜10剝下剝離膜5時的操作性優良的觀點,較佳為從黏結劑層2剝下剝離膜5時的剝離力為0.2N/50mm以下。 The thickness of the adhesive layer 2 used in the surface protection film 10 of the present invention is not particularly limited, and is, for example, preferably about 5 to 40 μm, more preferably about 10 to 30 μm. In addition, when the peeling strength (bonding force) of the surface protective film to the surface of the adherend is 0.03 to 0.3 N/25 mm, and the adhesive layer 2 having a micro-adhesive force is peeled off, when the surface protective film is peeled off from the adherend It is excellent in operability and therefore ideal. In addition, from the viewpoint of excellent workability when the release film 5 is peeled off from the surface protective film 10, the peeling force when the release film 5 is peeled off from the adhesive layer 2 is preferably 0.2 N/50 mm or less.
另外,對本發明的表面保護膜10中使用的剝離膜5而言,是在樹脂膜3的單面上層疊剝離劑層4而成,該剝離劑層4含有以二甲基聚矽氧烷作為主要成分的剝離劑以及與該剝離劑不發生反應的抗靜電劑。 Further, in the release film 5 used in the surface protection film 10 of the present invention, the release agent layer 4 is formed on one surface of the resin film 3, and the release agent layer 4 contains dimethyl polysiloxane as a dimethyl group. A release agent of a main component and an antistatic agent that does not react with the release agent.
作為樹脂膜3,可以舉出聚酯膜、聚醯胺膜、聚乙烯膜、聚丙烯膜、聚醯亞胺膜等,從透明性優良和價格比較低廉的觀點出發,特別較佳為聚酯膜。樹脂膜既可以是未拉伸 膜,也可以是單軸拉伸膜或雙軸拉伸膜。另外,也可以將拉伸膜的拉伸倍率、拉伸膜的伴隨晶體化所形成的軸方向上的取向角度控制在特定值。 Examples of the resin film 3 include a polyester film, a polyamide film, a polyethylene film, a polypropylene film, and a polyimide film. From the viewpoint of excellent transparency and low cost, polyester is particularly preferable. membrane. The resin film can be either unstretched The film may also be a uniaxially stretched film or a biaxially stretched film. Further, the stretching ratio of the stretched film and the orientation angle in the axial direction formed by the crystallization of the stretched film may be controlled to specific values.
對樹脂膜3的厚度並沒有特別的限定,例如,較佳為12~100μm左右的厚度;若為20~50μm左右的厚度則易於操作,因此更理想。 The thickness of the resin film 3 is not particularly limited, and is preferably, for example, a thickness of about 12 to 100 μm, and more preferably about 20 to 50 μm.
另外,在樹脂膜3的表面,也可以根據需要實施基於電暈放電進行的表面改性、底塗劑的塗抹等易黏接化處理。 Further, on the surface of the resin film 3, an easy adhesion treatment such as surface modification by corona discharge or application of a primer may be carried out as needed.
作為構成剝離劑層4的、以二甲基聚矽氧烷作為主要成分的剝離劑,可以舉出加成反應型、縮合反應型、陽離子聚合型、自由基聚合型等的公知的聚矽氧烷類剝離劑。作為加成反應型聚矽氧烷類剝離劑市售的產品,例如,可以舉出:KS-776A、KS-847T、KS-779H、KS-837、KS-778、KS-830(信越化學工業(股)公司製造);SRX-211、SRX-345、SRX-357、SD7333、SD7220、SD7223、LTC-300B、LTC-350G、LTC-310(陶氏康寧東麗(股)公司(Dow Corning Toray Co.,Ltd.)製造)等。作為縮合反應型市售的產品,例如,可以舉出SRX-290、SYLOFF-23(陶氏康寧東麗(股)公司製造)等。作為陽離子聚合型市售的產品,例如,可以舉出TPR-6501、TPR-6500、UV9300、UV9315、UV9430(邁圖高新材料公司(Momentive Performance Materials Inc.)製造)、X62-7622(信越化學工業(股)公司製造)等。作為自由基聚合型市售的產品,例如,可以舉出X62-7205(信越化學工業(股)公司製造)等。 The release agent containing dimethyl polysiloxane as a main component constituting the release agent layer 4 may be a known polyoxane such as an addition reaction type, a condensation reaction type, a cationic polymerization type or a radical polymerization type. Alkane stripper. As a commercially available product of an addition reaction type polyoxyalkylene type release agent, for example, KS-776A, KS-847T, KS-779H, KS-837, KS-778, and KS-830 (Shin-Etsu Chemical Industry) (manufactured by the company); SRX-211, SRX-345, SRX-357, SD7333, SD7220, SD7223, LTC-300B, LTC-350G, LTC-310 (Dow Corning Toray) Co., Ltd.))). Examples of the commercially available product of the condensation reaction type include SRX-290 and SYLOFF-23 (manufactured by Dow Corning Toray Co., Ltd.). Examples of the commercially available product of the cationic polymerization type include TPR-6501, TPR-6500, UV9300, UV9315, UV9430 (manufactured by Momentive Performance Materials Inc.), and X62-7622 (Shin-Etsu Chemical Industry). (share) company manufacturing) and so on. Examples of the commercially available product of the radical polymerization type include X62-7205 (manufactured by Shin-Etsu Chemical Co., Ltd.).
作為構成剝離劑層4的抗靜電劑,較佳為對以二 甲基聚矽氧烷作為主要成分的剝離劑溶液的分散性良好,並且不阻礙以二甲基聚矽氧烷作為主要成分的剝離劑的固化的抗靜電劑。另外,對抗靜電劑而言,為了能夠從剝離劑層4向黏結劑層2表面轉移而對黏結劑層賦予抗靜電效果,較佳為不與以二甲基聚矽氧烷作為主要成分的剝離劑發生反應的抗靜電劑。作為這樣的抗靜電劑,較佳為熔點小於30℃的離子性化合物。 As the antistatic agent constituting the release agent layer 4, it is preferably two The release agent solution containing methyl polysiloxane as a main component has good dispersibility and does not inhibit the cured antistatic agent of the release agent containing dimethylpolysiloxane as a main component. Further, in order to allow the antistatic agent to be transferred from the release agent layer 4 to the surface of the binder layer 2 to impart an antistatic effect to the binder layer, it is preferred not to be detached with dimethylpolysiloxane as a main component. An antistatic agent that reacts with the agent. As such an antistatic agent, an ionic compound having a melting point of less than 30 ° C is preferred.
作為熔點小於30℃的離子性化合物,是具有陽離子和陰離子的離子化合物。其中,陽離子可以舉出:咪唑鎓離子等環狀脒離子、吡啶鎓離子、銨離子、鋶離子、鏻離子等。另外,作為陰離子,可以舉出:CnH2n+1COO-、CnF2n+1COO-、NO3 -、CnF2n+1SO3 -、(CnF2n+1SO2)2N-、(CnF2n+1SO2)3C-、PO4 3-、AlCl4 -、Al2Cl7 -、ClO4 -、BF4 -、PF6 -、ASF6 -、SbF6 -等。 The ionic compound having a melting point of less than 30 ° C is an ionic compound having a cation and an anion. The cation may, for example, be a cyclic cerium ion such as an imidazolium ion, a pyridinium ion, an ammonium ion, a cerium ion or a cerium ion. Further, examples of the anion include C n H 2n+1 COO - , C n F 2n+1 COO - , NO 3 - , C n F 2n+1 SO 3 - , (C n F 2n+1 SO 2 2 N - , (C n F 2n+1 SO 2 ) 3 C - , PO 4 3- , AlCl 4 - , Al 2 Cl 7 - , ClO 4 - , BF 4 - , PF 6 - , ASF 6 - , SbF 6 - and so on.
抗靜電劑相對於以二甲基聚矽氧烷作為主要成分的剝離劑的添加量,是根據抗靜電劑的種類、與剝離劑的親和性程度的不同而不同。抗靜電劑的添加量只要考慮到從被黏附體上剝離表面保護膜時所需的剝離靜電壓、對被黏附體的污染性、黏結特性等而進行設定即可。 The amount of the antistatic agent added to the release agent containing dimethylpolysiloxane as a main component differs depending on the type of the antistatic agent and the degree of affinity with the release agent. The amount of the antistatic agent to be added may be set in consideration of the peeling static voltage required for peeling off the surface protective film from the adherend, the staining property to the adherend, the bonding property, and the like.
剝離劑層4可以是藉由以二甲基聚矽氧烷作為主要成分的剝離劑以及與該剝離劑不發生反應的抗靜電劑的混合物所形成的剝離劑層4。對於以二甲基聚矽氧烷作為主要成分的剝離劑與抗靜電劑的混合方法而言,並沒有特別的限定。可以採用下列混合方法中的任一種方法:在以二甲基聚矽氧烷作為主要成分的剝離劑中添加抗靜電劑進行混合後,添加剝離 劑固化用催化劑並加以混合的方法;預先採用有機溶劑稀釋以二甲基聚矽氧烷作為主要成分的剝離劑後,添加抗靜電劑以及剝離劑固化用催化劑並加以混合的方法;預先將以聚二甲基聚矽氧烷作為主要成分的剝離劑稀釋於有機溶劑後,添加催化劑而進行混合,然後,添加抗靜電劑並加以混合的方法等。另外,根據需要,也可以添加矽烷偶聯劑等黏合促進劑、含有聚氧化亞烷基的化合物等的輔助抗靜電效果的材料。 The release agent layer 4 may be a release agent layer 4 formed by a mixture of a release agent containing dimethylpolysiloxane as a main component and an antistatic agent which does not react with the release agent. The method of mixing the release agent and the antistatic agent containing dimethylpolysiloxane as a main component is not particularly limited. Any one of the following mixing methods may be employed: an antistatic agent is added to a release agent containing dimethyl polyoxyalkylene as a main component, and then added and stripped. a method of curing a catalyst for curing a solvent; a method of diluting a stripping agent containing dimethyl polyoxyalkylene as a main component with an organic solvent in advance, adding an antistatic agent and a catalyst for curing the release agent, and mixing the same; A method in which a stripping agent containing polydimethylpolysiloxane as a main component is diluted with an organic solvent, and then a catalyst is added and mixed, and then an antistatic agent is added and mixed. Further, if necessary, a material having an antistatic effect such as a binder accelerator such as a decane coupling agent or a compound containing a polyoxyalkylene group may be added.
對於以二甲基聚矽氧烷作為主要成分的剝離劑與抗靜電劑的混合比率而言,並沒有特別的限定,但相對於以二甲基聚矽氧烷作為主要成分的剝離劑的固體成分100,較佳為抗靜電劑以固體成分計為5~100左右的比例。相對於以二甲基聚矽氧烷作為主要成分的剝離劑的固體成分100,若抗靜電劑以固體成分換算的添加量為小於5的比例,則抗靜電劑對黏結劑層表面的轉移量也變少,難以使黏結劑層發揮抗靜電的功能。另外,相對於以二甲基聚矽氧烷作為主要成分的剝離劑的固體成分100,若抗靜電劑以固體成分換算的添加量為超過100的比例,則與抗靜電劑一起以二甲基聚矽氧烷作為主要成分的剝離劑也會被轉移至黏結劑層表面,因此,可能會降低黏結劑層的黏結特性。 The mixing ratio of the release agent and the antistatic agent containing dimethyl polysiloxane as a main component is not particularly limited, but is a solid relative to a release agent containing dimethyl polyoxyalkylene as a main component. The component 100 is preferably a ratio of the antistatic agent in a solid content of about 5 to 100. When the amount of the antistatic agent added in a solid content is less than 5 with respect to the solid content 100 of the release agent containing dimethyl polysiloxane as a main component, the amount of the antistatic agent transferred to the surface of the binder layer It is also less, and it is difficult to make the adhesive layer function as an antistatic. In addition, when the solid content of the antistatic agent in terms of solid content is more than 100, the solid content 100 of the release agent containing dimethyl polysiloxane as a main component is dimethyl group together with the antistatic agent. The release agent containing polyoxyalkylene as a main component is also transferred to the surface of the adhesive layer, and therefore, the adhesion characteristics of the adhesive layer may be lowered.
本發明中在表面保護膜10的基材膜1上形成黏結劑層2的方法以及貼合剝離膜5的方法,均可採用公知的方法來進行,沒有特別的限定。具體而言,可以舉出:(1)將用於形成黏結劑層2的樹脂組合物塗布於基材膜1的單面上並進行乾燥,形成黏結劑層後貼合剝離膜5的方法;(2)將用於形成黏結 劑層2的樹脂組合物塗布於剝離膜5表面上並進行乾燥,形成黏結劑層後,貼合基材膜1的方法等。可以採用其中的任一種方法。 In the present invention, the method of forming the adhesive layer 2 on the base film 1 of the surface protective film 10 and the method of bonding the release film 5 can be carried out by a known method, and are not particularly limited. Specifically, (1) a method in which a resin composition for forming the binder layer 2 is applied onto one surface of the base film 1 and dried to form a binder layer, and then the release film 5 is bonded; (2) will be used to form the bond The resin composition of the agent layer 2 is applied onto the surface of the release film 5 and dried to form a binder layer, and the method of bonding the base film 1 and the like. Any of these methods can be employed.
另外,當將黏結劑層2形成於基材膜1的表面時,可採用公知的方法來進行。具體而言,能夠使用逆轉塗布、逗點塗布、凹版塗布、狹縫式擠壓塗布、麥勒棒(Mayer bar)塗布、氣刀塗布等公知的塗布方法。 Further, when the adhesive layer 2 is formed on the surface of the base film 1, it can be carried out by a known method. Specifically, a known coating method such as reverse coating, comma coating, gravure coating, slit extrusion coating, Mayer bar coating, or air knife coating can be used.
另外,同樣地,當將剝離劑層4形成於樹脂膜3時,可以採用公知的方法來進行。具體而言,能夠採用凹版塗布、麥勒棒塗布、氣刀塗布等公知的塗布方法。 Further, similarly, when the release agent layer 4 is formed on the resin film 3, it can be carried out by a known method. Specifically, a known coating method such as gravure coating, Mylar rod coating, or air knife coating can be employed.
對具有上述構成的本發明表面保護膜10而言,從作為被黏附體的光學用膜上剝離時的表面電位較佳為+0.7kV~-0.7kV。並且,更佳為表面電位為+0.5kV~-0.5kV,特別較佳為表面電位為+0.1kV~-0.1kV。該表面電位能夠藉由改變剝離劑層中所含有的抗靜電劑的種類、添加量等來進行調整。 The surface protective film 10 of the present invention having the above-described configuration preferably has a surface potential of from +0.7 kV to -0.7 kV when peeled off from the optical film as the adherend. Further, it is more preferable that the surface potential is +0.5 kV to -0.5 kV, and particularly preferably the surface potential is +0.1 kV to -0.1 kV. This surface potential can be adjusted by changing the kind, addition amount, and the like of the antistatic agent contained in the release agent layer.
圖2是表示從本發明的表面保護膜上剝下剝離膜的狀態的剖面圖。 Fig. 2 is a cross-sectional view showing a state in which a release film is peeled off from the surface protection film of the present invention.
藉由將剝離膜5從圖1所示的表面保護膜10上剝下,剝離膜5的剝離劑層4所含的抗靜電劑(附圖標記7)的一部分,被轉移(附著)至表面保護膜10的黏結劑層2的表面。因此,在圖2中,以附圖標記7的斑點示意性地表示了被轉移至表面保護膜的黏結劑層2表面的抗靜電劑。藉由抗靜電劑7的成分從剝離膜5向黏結劑層2的表面轉移,與轉移之前的黏結劑層2 相比,能夠降低從被黏附體上剝下黏結劑層2時的剝離靜電壓。此外,從被黏附體上剝下黏結劑層時的剝離靜電壓,可採用公知的方法進行測定。例如,在將表面保護膜貼合於偏光板等的被黏附體上後,使用高速剝離試驗機(TESTER產業(股)公司(TESTER Sangyo Co.,Ltd.)製造)以每分鐘40m的剝離速度剝離表面保護膜的同時,使用表面電位計(基恩士(股)公司(Keyence Corporation)製造)每10ms測定被黏附體表面的表面電位,並將此時的表面電位絕對值的最大值作為剝離靜電壓(kV)來進行測定。 By peeling off the release film 5 from the surface protection film 10 shown in FIG. 1, a part of the antistatic agent (reference numeral 7) contained in the release agent layer 4 of the release film 5 is transferred (attached) to the surface. The surface of the adhesive layer 2 of the protective film 10. Therefore, in Fig. 2, the antistatic agent transferred to the surface of the adhesive layer 2 of the surface protective film is schematically indicated by the spot of the reference numeral 7. Transferring from the release film 5 to the surface of the adhesive layer 2 by the component of the antistatic agent 7, and the adhesive layer 2 before transfer In contrast, the peeling static voltage when the adhesive layer 2 is peeled off from the adherend can be reduced. Further, the peeling static voltage when the adhesive layer is peeled off from the adherend can be measured by a known method. For example, after the surface protective film is bonded to the adherend such as a polarizing plate, a high-speed peeling tester (manufactured by TESTER Sangyo Co., Ltd.) is used at a peeling speed of 40 m per minute. While peeling off the surface protective film, the surface potential of the surface of the adherend was measured every 10 ms using a surface potentiometer (manufactured by Keyence Corporation), and the maximum value of the absolute value of the surface potential at this time was taken as the peeling off. The static voltage (kV) was used for the measurement.
對本發明的表面保護膜而言,當將圖2所示的剝下了剝離膜的狀態的表面保護膜11貼合於被黏附體上時,被轉移至該黏結劑層2表面的抗靜電劑與被黏附體表面進行接觸。藉由該操作,能夠抑低再次從被黏附體上剝下表面保護膜時的剝離靜電壓。 In the surface protective film of the present invention, when the surface protective film 11 in the state in which the release film is peeled off as shown in FIG. 2 is attached to the adherend, the antistatic agent transferred to the surface of the adhesive layer 2 is applied. Contact with the surface of the adherend. By this operation, it is possible to suppress the peeling static voltage when the surface protective film is peeled off again from the adherend.
圖3是表示本發明的光學零件的實施例的剖面圖。 Fig. 3 is a cross-sectional view showing an embodiment of an optical component of the present invention.
在從本發明的表面保護膜10上剝下剝離膜5而黏結劑層2外露的狀態下,藉由該黏結劑層2貼合于作為被黏附體的光學零件8上。 In the state where the release film 5 is peeled off from the surface protection film 10 of the present invention and the adhesive layer 2 is exposed, the adhesive layer 2 is bonded to the optical component 8 as an adherend.
即,在圖3中示出了貼合有本發明的表面保護膜10的光學零件20。作為光學零件,可以舉出偏光板、相位差板、透鏡膜、兼用作相位差板的偏光板、兼用作透鏡膜的偏光板等光學用膜。這種光學零件,被用作液晶顯示面板等液晶顯示裝置、各種計量儀器類的光學系統裝置等的構成零件。另外,作為光學零件,還可以舉出防反射膜、硬塗膜、觸摸面板用透明導電 膜等光學用膜。 That is, the optical component 20 to which the surface protection film 10 of the present invention is bonded is shown in FIG. Examples of the optical component include an optical film such as a polarizing plate, a phase difference plate, a lens film, a polarizing plate which also serves as a phase difference plate, and a polarizing plate which also serves as a lens film. Such an optical component is used as a component of a liquid crystal display device such as a liquid crystal display panel or an optical system device of various measuring instruments. Further, examples of the optical component include an antireflection film, a hard coat film, and a transparent conductive layer for a touch panel. An optical film such as a film.
基於本發明的光學零件,當將表面保護膜10從作為被黏附體的光學零件(光學用膜)上剝離去除時,能夠充分地將剝離靜電壓抑制在低水準。因此,不用擔心會破壞驅動IC、TFT元件、閘極線驅動電路等的電路零件,能夠提高製造液晶顯示面板等步驟中的生產效率,確保生產步驟的可靠性。 According to the optical component of the present invention, when the surface protective film 10 is peeled off from the optical component (optical film) as the adherend, the peeling static voltage can be sufficiently suppressed to a low level. Therefore, there is no fear that the circuit components such as the driver IC, the TFT element, and the gate line driver circuit are destroyed, and the production efficiency in the steps of manufacturing the liquid crystal display panel and the like can be improved, and the reliability of the production steps can be ensured.
【實施例】 [Examples]
下面,藉由實施例進一步說明本發明。 Hereinafter, the present invention will be further described by way of examples.
(實施例1) (Example 1)
(表面保護膜的製造) (Manufacture of surface protective film)
將5重量份的加成反應型聚矽氧烷(產品名稱為SRX-345,陶氏康寧東麗(股)公司製造)、7.5重量份的三正丁基甲基銨雙三氟甲烷磺醯亞胺(FC-4400,3M公司製造)10%的乙酸乙酯溶液、95重量份的甲苯與乙酸乙酯為1:1的混合溶劑、0.05重量份的鉑催化劑(產品名稱為SRX-212,陶氏康寧東麗(股)公司製造)混合在一起並進行攪拌混合,配製了用於形成實施例1的剝離劑層的塗料。採用麥勒棒,將用於形成實施例1的剝離劑層的塗料,以使乾燥後的厚度成為0.2μm的方式,塗布在厚度為38μm的聚對苯二甲酸乙二醇酯膜的表面,並在120℃的熱風迴圈式烘爐中乾燥1分鐘,獲得了實施例1的剝離膜。另一方面,將以100:4的重量比使丙烯酸2-乙基己酯與丙烯酸2-羥乙酯進行共聚而成的、重均分子量為47萬的丙烯酸酯共聚物30重量份,溶解於70重量份的乙酸乙酯中而獲得黏結劑(固體成分含量為30%的乙酸乙酯溶液),相對於100 重量份的該黏結劑,添加1.2重量份的HDI類固化劑(產品名稱為Coronate HX,日本聚氨酯工業(股)公司(Nippon Polyurethane Industry Co.,Ltd.)製造)並進行混合而形成塗抹液,並將該塗抹液以使乾燥後的厚度成為20μm的方式塗布於厚度為38μm的聚對苯二甲酸乙二醇酯膜的表面,然後藉由100℃的熱風迴圈式烘爐乾燥2分鐘,從而形成了黏結劑層。然後,在該黏結劑層的表面,貼合了上述製造的實施例1的剝離膜的剝離劑層(聚矽氧烷處理面)。將所得到的黏結膜在40℃的環境下保溫5天,以使黏結劑固化,獲得了實施例1的表面保護膜。 5 parts by weight of an addition reaction type polyoxyalkylene (product name: SRX-345, manufactured by Dow Corning Toray Co., Ltd.), 7.5 parts by weight of tri-n-butylmethylammonium bistrifluoromethanesulfonimide (FC-4400, manufactured by 3M Company) 10% ethyl acetate solution, 95 parts by weight of a mixed solvent of 1:1 toluene and ethyl acetate, 0.05 part by weight of platinum catalyst (product name is SRX-212, Dow) The coatings used to form the release agent layer of Example 1 were prepared by mixing together and stirring and mixing. The coating material for forming the release agent layer of Example 1 was applied to the surface of a polyethylene terephthalate film having a thickness of 38 μm so as to have a thickness of 0.2 μm after drying using a Myrtle rod. The film was dried in a hot air loop type oven at 120 ° C for 1 minute to obtain a release film of Example 1. On the other hand, 30 parts by weight of an acrylate copolymer having a weight average molecular weight of 470,000 obtained by copolymerizing 2-ethylhexyl acrylate and 2-hydroxyethyl acrylate in a weight ratio of 100:4 was dissolved in 70 parts by weight of ethyl acetate to obtain a binder (30% solids solution in ethyl acetate) relative to 100 To the weight of the binder, 1.2 parts by weight of an HDI-based curing agent (product name: Coronate HX, manufactured by Nippon Polyurethane Industry Co., Ltd.) was added and mixed to form an application liquid. The coating liquid was applied to the surface of a polyethylene terephthalate film having a thickness of 38 μm so as to have a thickness of 20 μm after drying, and then dried by a hot air loop oven at 100 ° C for 2 minutes. Thereby a layer of adhesive is formed. Then, a release agent layer (polysiloxane treatment surface) of the release film of Example 1 produced above was bonded to the surface of the adhesive layer. The obtained bonded film was kept at 40 ° C for 5 days to cure the adhesive, and the surface protective film of Example 1 was obtained.
(實施例2) (Example 2)
除了以乾燥後的厚度成為0.1μm的方式塗布用於形成實施例1的剝離劑層的塗料以外,與實施例1同樣地進行操作,獲得了實施例2的表面保護膜。 The surface protective film of Example 2 was obtained in the same manner as in Example 1 except that the coating material for forming the release agent layer of Example 1 was applied so as to have a thickness of 0.1 μm after drying.
(實施例3) (Example 3)
除了作為實施例1的加成反應型聚矽氧烷採用陶氏康寧東麗(股)公司製造的SRX-211(產品名稱)以外,與實施例1同樣地進行操作,獲得了實施例3的表面保護膜。 Except that SRX-211 (product name) manufactured by Dow Corning Toray Co., Ltd. was used as the addition reaction type polyoxane of Example 1, the same operation as in Example 1 was carried out, and Example 3 was obtained. Surface protection film.
(比較例1) (Comparative Example 1)
將5重量份的加成反應型聚矽氧烷(產品名稱為SRX-345,陶氏康寧東麗(股)公司製造)、95重量份的甲苯與乙酸乙酯為1:1的混合溶劑、0.05重量份的鉑催化劑(產品名稱為SRX-212,陶氏康寧東麗(股)公司製造)混合在一起並進行攪拌混合,配製了用於形成比較例1的剝離劑層的塗料。採用麥勒棒,將用於形成比較例1的剝離劑層的塗料,以使乾燥後的厚 度成為0.2μm的方式塗布在厚度為38μm的聚對苯二甲酸乙二醇酯膜的表面,並在120℃的熱風迴圈式烘爐中乾燥1分鐘,獲得了比較例1的剝離膜。另一方面,相對於100重量份的實施例1的黏結劑(固體成分含量為30%的乙酸乙酯溶液),添加並混合了三正丁基甲基銨雙三氟甲烷磺醯亞胺(FC-4400,3M公司製造)10%的乙酸乙酯溶液3重量份、HDI類固化劑(產品名稱為Coronate HX,日本聚氨酯工業(股)公司製造)1.2重量份而形成塗抹液,並將該塗抹液以使乾燥後的厚度成為20μm的方式塗布於厚度為38μm的聚對苯二甲酸乙二醇酯膜的表面,然後藉由100℃的熱風迴圈式烘爐乾燥2分鐘,從而形成了黏結劑層。然後,在該黏結劑層的表面,貼合了上述製造的比較例1的剝離膜的剝離劑層(聚矽氧烷處理面)。將所得到的黏結膜在40℃的環境下保溫5天,以使黏結劑固化,獲得了比較例1的表面保護膜。 5 parts by weight of an addition reaction type polyoxyalkylene (product name: SRX-345, manufactured by Dow Corning Toray Co., Ltd.), 95 parts by weight of a mixed solvent of toluene and ethyl acetate of 1:1, 0.05 part by weight of a platinum catalyst (product name: SRX-212, manufactured by Dow Corning Toray Co., Ltd.) was mixed and stirred to prepare a coating material for forming the release agent layer of Comparative Example 1. The coating used to form the release agent layer of Comparative Example 1 was used to make the thick layer after drying using a Myrtle rod. The surface of the polyethylene terephthalate film having a thickness of 38 μm was applied to a surface of 0.2 μm, and dried in a hot air loop oven at 120 ° C for 1 minute to obtain a release film of Comparative Example 1. On the other hand, tri-n-butylmethylammonium bistrifluoromethanesulfonimide (FC-) was added and mixed with respect to 100 parts by weight of the binder of Example 1 (ethyl acetate solution having a solid content of 30%). 4400, manufactured by 3M Company) 3 parts by weight of a 10% ethyl acetate solution, 1.2 parts by weight of an HDI-based curing agent (product name: Coronate HX, manufactured by Nippon Polyurethane Industry Co., Ltd.) to form an application liquid, and the application liquid The surface of the polyethylene terephthalate film having a thickness of 38 μm was applied to a thickness of 20 μm after drying, and then dried by a hot air loop oven at 100 ° C for 2 minutes to form a binder. Floor. Then, a release agent layer (polyoxane-treated surface) of the release film of Comparative Example 1 produced above was bonded to the surface of the adhesive layer. The obtained bonded film was kept at 40 ° C for 5 days to cure the adhesive, and the surface protective film of Comparative Example 1 was obtained.
(比較例2) (Comparative Example 2)
除了使用三正丁基甲基銨雙三氟甲烷磺醯亞胺10%的乙酸乙酯溶液0.1重量份以外,與比較例1同樣地進行操作,獲得了比較例2的表面保護膜。 A surface protective film of Comparative Example 2 was obtained in the same manner as in Comparative Example 1, except that 0.1 part by weight of a 10% ethyl acetate solution of tri-n-butylmethylammonium bistrifluoromethanesulfonimide was used.
(實施例4) (Example 4)
將丙烯酸2-乙基己酯、丙烯酸丁酯和丙烯酸2-羥乙酯以60:40:4的重量比進行共聚而成的重均分子量為48萬的丙烯酸酯共聚物30重量份,溶解於70重量份的乙酸乙酯中形成黏結劑(固體成分含量為30%的乙酸乙酯溶液),相對於100重量份的該黏結劑添加並混合1.2重量份的HDI類固化劑(產品名稱 為Coronate HX,日本聚氨酯工業(股)公司製造)而獲得塗抹液,使用該塗抹液來代替實施例1的塗抹液,除此以外,與實施例1同樣地進行操作,獲得了實施例4的表面保護膜。 30 parts by weight of an acrylate copolymer having a weight average molecular weight of 480,000 obtained by copolymerizing 2-ethylhexyl acrylate, butyl acrylate and 2-hydroxyethyl acrylate in a weight ratio of 60:40:4, and dissolved in A binder (30% solids ethyl acetate solution) was formed in 70 parts by weight of ethyl acetate, and 1.2 parts by weight of an HDI-based curing agent was added and mixed with respect to 100 parts by weight of the binder (product name) In the same manner as in Example 1, except that the application liquid was obtained for Coronate HX (manufactured by Nippon Polyurethane Industry Co., Ltd.), the same procedure as in Example 1 was carried out, and Example 4 was obtained. Surface protection film.
(實施例5) (Example 5)
將丙烯酸2-乙基己酯、甲氧基聚乙二醇(400)甲基丙烯酸酯和丙烯酸2-羥乙酯以90:10:4的重量比進行共聚而成的重均分子量為38萬的(甲基)丙烯酸酯共聚物30重量份,溶解於70重量份的乙酸乙酯中形成黏結劑(固體成分含量為30%的乙酸乙酯溶液),相對於100重量份的該黏結劑添加並混合1.2重量份的HDI類固化劑(產品名稱為Coronate HX,日本聚氨酯工業(股)公司製造)而獲得塗抹液,使用該塗抹液來代替實施例1的塗抹液,除此以外,與實施例1同樣地進行操作,獲得了實施例5的表面保護膜。 The weight average molecular weight of 2-ethylhexyl acrylate, methoxypolyethylene glycol (400) methacrylate and 2-hydroxyethyl acrylate copolymerized at a weight ratio of 90:10:4 is 380,000. 30 parts by weight of the (meth) acrylate copolymer, dissolved in 70 parts by weight of ethyl acetate to form a binder (ethyl acetate solution having a solid content of 30%), and added to 100 parts by weight of the binder And adding 1.2 parts by weight of an HDI-based curing agent (product name: Coronate HX, manufactured by Nippon Polyurethane Industry Co., Ltd.) to obtain an application liquid, and using the application liquid instead of the application liquid of Example 1, in addition to the implementation In the same manner as in Example 1, the surface protective film of Example 5 was obtained.
(實施例6) (Example 6)
將丙烯酸2-乙基己酯與丙烯酸以100:4的重量比進行共聚而成的重均分子量為52萬的丙烯酸酯共聚物30重量份,溶解於70重量份的乙酸乙酯中形成黏結劑(固體成分含量為30%的乙酸乙酯溶液),相對於100重量份的該黏結劑添加並混合1.0重量份的環氧類固化劑(產品名稱為TETRAD-C,三菱瓦斯化學(股)公司(Mitsubishi Gas Chemical Company Inc.)製造)而獲得塗抹液,使用該塗抹液來代替實施例1的塗抹液,除此以外與實施例1同樣地進行操作,獲得了實施例6的表面保護膜。 30 parts by weight of an acrylate copolymer having a weight average molecular weight of 520,000 and a copolymer of 2-ethylhexyl acrylate and acrylic acid in a weight ratio of 100:4, dissolved in 70 parts by weight of ethyl acetate to form a binder (A solution of ethyl acetate having a solid content of 30%), and 1.0 part by weight of an epoxy-based curing agent (product name: TETRAD-C, Mitsubishi Gas Chemical Co., Ltd.) was added and mixed with 100 parts by weight of the binder. A surface protective film of Example 6 was obtained in the same manner as in Example 1 except that the application liquid was obtained by the use of the application liquid (manufactured by Mitsubishi Gas Chemical Company Inc.).
下面,示出評價試驗的方法和結果。 Next, the method and result of the evaluation test are shown.
〈剝離膜的剝離力的測定方法〉 <Method for Measuring Peel Force of Release Film>
以寬度50mm、長度150mm的尺寸切割表面保護膜的試樣。在23℃×50%RH的試驗環境下,使用拉伸試驗機以300mm/分鐘的剝離速度向180°方向剝掉剝離膜,測定此時的強度,並將其作為剝離膜的剝離力(N/50mm)。 A sample of the surface protective film was cut in a size of 50 mm in width and 150 mm in length. In a test environment of 23 ° C × 50% RH, the release film was peeled off in a 180° direction at a peeling speed of 300 mm/min using a tensile tester, and the strength at that time was measured, and this was used as a peeling force of the release film (N). /50mm).
〈表面保護膜的黏結力的測定方法〉 <Method for Measuring the Bonding Force of Surface Protective Film>
採用貼合機在玻璃板表面貼合了防眩低反射處理偏光板(AG-LR偏光板)。然後,將切割成寬度為25mm的表面保護膜貼合於偏光板的表面後,在23℃×50%RH的試驗環境下保管1天。然後,使用拉伸試驗機以300mm/分鐘的剝離速度向180°方向剝離掉表面保護膜,測定此時的強度,並將其作為黏結力(N/25mm)。 An anti-glare low-reflection polarizing plate (AG-LR polarizing plate) was bonded to the surface of the glass plate by a laminating machine. Then, the surface protective film cut into a width of 25 mm was bonded to the surface of the polarizing plate, and then stored in a test environment of 23 ° C × 50% RH for 1 day. Then, the surface protective film was peeled off in a 180° direction at a peeling speed of 300 mm/min using a tensile tester, and the strength at this time was measured and used as a bonding force (N/25 mm).
〈表面保護膜的剝離靜電壓的測定方法〉 <Method for Measuring Peeling Static Voltage of Surface Protective Film>
採用貼合機在玻璃板表面貼合了防眩低反射處理偏光板(AG-LR偏光板)。然後,將切割成寬度為25mm的表面保護膜貼合於偏光板的表面後,在23℃×50%RH的試驗環境下保管1天。然後,在使用高速剝離試驗機(TESTER產業(股)公司(TESTER Sangyo Co.,Ltd.)製造)以每分鐘40m的剝離速度剝離表面保護膜的同時,使用表面電位計(基恩士(股)公司(Keyence Corporation)製造)每10ms測定前述偏光板表面的表面電位,並將此時的表面電位絕對值的最大值作為剝離靜電壓(kV)。 An anti-glare low-reflection polarizing plate (AG-LR polarizing plate) was bonded to the surface of the glass plate by a laminating machine. Then, the surface protective film cut into a width of 25 mm was bonded to the surface of the polarizing plate, and then stored in a test environment of 23 ° C × 50% RH for 1 day. Then, while peeling off the surface protective film at a peeling speed of 40 m per minute using a high-speed peeling tester (manufactured by TESTER Sangyo Co., Ltd.), a surface potentiometer was used (Keyence) The company (manufactured by Keyence Corporation) measures the surface potential of the surface of the polarizing plate every 10 ms, and the maximum value of the absolute value of the surface potential at this time is taken as the peeling static voltage (kV).
〈表面保護膜的表面污染性的確認方法〉 <Method for Confirming Surface Contamination of Surface Protective Film>
採用貼合機在玻璃板表面貼合了防眩低反射處理偏光板(AG-LR偏光板)。然後,將切割成寬度為25mm的表面保護膜貼合於偏光板的表面後,在23℃×50%RH的試驗環境下保管3 天和30天。然後,剝下表面保護膜,藉由目測觀察了偏光板表面的污染性。作為表面污染性的判定基準,當偏光板上無污染轉移時判定為(○),當確認偏光板上有污染轉移時判定為(×)。 An anti-glare low-reflection polarizing plate (AG-LR polarizing plate) was bonded to the surface of the glass plate by a laminating machine. Then, the surface protective film cut into a width of 25 mm was attached to the surface of the polarizing plate, and then stored in a test environment of 23 ° C × 50% RH. Days and 30 days. Then, the surface protective film was peeled off, and the contamination of the surface of the polarizing plate was observed by visual observation. As a criterion for determining the surface contamination property, it was judged as (○) when there was no contamination transition on the polarizing plate, and it was judged as (×) when it was confirmed that there was contamination transition on the polarizing plate.
對所得到的實施例1~6和比較例1~2的表面保護膜進行測定,並將測定結果示於表1~2中。其中,“2EHA”是指丙烯酸2-乙基己酯,“HEA”是指丙烯酸2-羥乙酯,“BA”是指丙烯酸丁酯,“#400G”是指甲氧基聚乙二醇(400)甲基丙烯酸酯,“AA”是指丙烯酸,“FC4400”是指三正丁基甲基銨雙三氟甲烷磺醯亞胺。對黏結劑層和剝離劑層的組成而言,是將黏結劑的總量或者用於形成剝離劑層的塗料的總量分別達到約100重量份的方式以重量份來表示。 The surface protective films of the obtained Examples 1 to 6 and Comparative Examples 1 and 2 were measured, and the measurement results are shown in Tables 1 and 2. Wherein "2EHA" means 2-ethylhexyl acrylate, "HEA" means 2-hydroxyethyl acrylate, "BA" means butyl acrylate, and "#400G" is methoxy ethoxy polyethylene glycol (400) Methacrylate, "AA" means acrylic acid, and "FC4400" means tri-n-butylmethylammonium bistrifluoromethanesulfonimide. The composition of the binder layer and the release agent layer is expressed in parts by weight in such a manner that the total amount of the binder or the total amount of the coating material for forming the release agent layer is about 100 parts by weight, respectively.
根據表1和表2所示的測定結果,可知下述情況。 From the measurement results shown in Tables 1 and 2, the following can be seen.
本發明的實施例1~6的表面保護膜具有適宜的黏結力,對被黏附體表面沒有污染,且從被黏附體上剝離表面保護膜時的剝離靜電壓低。 The surface protective films of Examples 1 to 6 of the present invention have a suitable bonding force, do not contaminate the surface of the adherend, and have a low peeling static voltage when the surface protective film is peeled off from the adherend.
另一方面,對於黏結劑層中添加了抗靜電劑的比較例1的表面保護膜而言,雖然從被黏附體上剝離表面保護膜時的剝離靜電壓低而良好,但剝離後對被黏附體的污染多。另外,在減少了抗靜電劑的量的比較例2中,雖改善了對被黏附體的污染性,但從被黏附體上剝離表面保護膜時的剝離靜電壓高。 On the other hand, in the surface protective film of Comparative Example 1 in which the antistatic agent was added to the adhesive layer, the peeling static voltage was good when the surface protective film was peeled off from the adherend, but the adherend was peeled off after peeling. More pollution. Further, in Comparative Example 2 in which the amount of the antistatic agent was reduced, the contamination to the adherend was improved, but the peeling static voltage was high when the surface protective film was peeled off from the adherend.
即,根據將抗靜電劑混合於黏結劑中的比較例1、2,難以兼備剝離靜電壓的降低和對被黏附體污染性的改善。另一方 面,在將抗靜電劑添加於剝離劑層後將抗靜電劑轉移至黏結劑層表面的實施例1~6中,具有能夠以少的添加量降低剝離靜電壓的效果,因此獲得了對被黏附體也沒有污染,且抗剝離靜電性能也良好的表面保護膜。 In other words, according to Comparative Examples 1 and 2 in which the antistatic agent was mixed in the binder, it was difficult to achieve both a decrease in the peeling static voltage and an improvement in the staining property of the adherend. The other side In the first to sixth embodiments in which the antistatic agent was added to the release agent layer and the antistatic agent was transferred to the surface of the adhesive layer, the effect of reducing the peeling static voltage with a small addition amount was obtained, and thus the pair was obtained. The adhesive body is also free from contamination, and the surface protective film is also excellent in anti-peeling electrostatic properties.
本發明的表面保護膜,例如,能夠應用於偏光板、相位差板、透鏡膜等的光學用膜中,此外,在各種光學零件等的生產步驟等中,貼合於該光學零件等上以用於保護其表面。另外,本發明的表面保護膜能夠減少從被黏附體上剝離時產生的靜電量,並且,抗剝離靜電性能之經時劣化及對被黏附體的污染少,能夠提高生產步驟的成品率,在工業上的利用價值大。 The surface protective film of the present invention can be applied to an optical film such as a polarizing plate, a retardation film, or a lens film, and can be bonded to the optical component or the like in a production step of various optical components or the like. Used to protect its surface. Further, the surface protective film of the present invention can reduce the amount of static electricity generated when peeling off from the adherend, and the deterioration of the anti-peeling electrostatic property over time and the contamination of the adherend are small, and the yield of the production step can be improved. Industrial use is of great value.
1‧‧‧基材膜 1‧‧‧Base film
2‧‧‧黏結劑層 2‧‧‧Binder layer
3‧‧‧樹脂膜 3‧‧‧ resin film
4‧‧‧剝離劑層 4‧‧‧ Stripper layer
5‧‧‧剝離膜 5‧‧‧Release film
7‧‧‧抗靜電劑 7‧‧‧Antistatic agent
10‧‧‧表面保護膜 10‧‧‧Surface protection film
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013170660A JP5882266B2 (en) | 2013-08-20 | 2013-08-20 | Surface protective film and optical component on which it is bonded |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201623527A TW201623527A (en) | 2016-07-01 |
TWI580747B true TWI580747B (en) | 2017-05-01 |
Family
ID=52694231
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW103124008A TWI532804B (en) | 2013-08-20 | 2014-07-11 | Surface protection film and optical component attached with the same |
TW105108764A TWI580747B (en) | 2013-08-20 | 2014-07-11 | Peeling film for antistatic surface protection film |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW103124008A TWI532804B (en) | 2013-08-20 | 2014-07-11 | Surface protection film and optical component attached with the same |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP5882266B2 (en) |
KR (2) | KR101589094B1 (en) |
CN (1) | CN104419338B (en) |
TW (2) | TWI532804B (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6327704B2 (en) * | 2014-05-20 | 2018-05-23 | 日東電工株式会社 | Method for producing surface protective film |
JP6327703B2 (en) * | 2014-05-20 | 2018-05-23 | 日東電工株式会社 | Surface protection film |
JP6549392B2 (en) * | 2015-03-13 | 2019-07-24 | 日東電工株式会社 | Adhesive film functional film and film set |
JP6338288B2 (en) * | 2015-03-25 | 2018-06-06 | 藤森工業株式会社 | Antistatic surface protective film and optical component on which it is bonded |
JP6313720B2 (en) * | 2015-03-25 | 2018-04-18 | 藤森工業株式会社 | Antistatic surface protection film |
JP6226904B2 (en) * | 2015-03-26 | 2017-11-08 | 藤森工業株式会社 | Surface protective film and optical component to which it is attached |
WO2016175014A1 (en) * | 2015-04-28 | 2016-11-03 | 大日本印刷株式会社 | Method for producing device layer, separation apparatus, roll obtained by winding laminate, laminate and separation method |
CN105017987A (en) * | 2015-07-28 | 2015-11-04 | 太湖金张科技股份有限公司 | Optical double-faced adhesive tape |
JP6426071B2 (en) * | 2015-09-14 | 2018-11-21 | 藤森工業株式会社 | SURFACE PROTECTIVE FILM, AND OPTICAL COMPONENT WITH THE SAME |
JP2017144608A (en) * | 2016-02-16 | 2017-08-24 | 藤森工業株式会社 | Surface protective film and optical component laminated with the same |
JP6392798B2 (en) * | 2016-02-16 | 2018-09-19 | 藤森工業株式会社 | Surface protective film and optical component on which it is bonded |
CN106280646B (en) * | 2016-08-17 | 2018-09-25 | 深圳正峰印刷有限公司 | The preparation method of anti-static release coating and film |
JP6628100B2 (en) * | 2016-11-08 | 2020-01-08 | 王子ホールディングス株式会社 | Masking tape used for asphalt pavement and method for producing the same |
JP6700560B2 (en) * | 2016-12-26 | 2020-05-27 | 東レフィルム加工株式会社 | Release film |
JP6943732B2 (en) * | 2017-11-14 | 2021-10-06 | 日本カーバイド工業株式会社 | Adhesive composition for protective film and protective film |
JP7057879B2 (en) * | 2018-02-08 | 2022-04-21 | 株式会社スリーボンド | Coating agent composition |
JP6558814B2 (en) * | 2018-03-22 | 2019-08-14 | 藤森工業株式会社 | Method for producing antistatic surface protective film |
JP6655681B2 (en) * | 2018-08-21 | 2020-02-26 | 藤森工業株式会社 | Release film for antistatic surface protection film |
JP6907395B2 (en) * | 2019-04-10 | 2021-07-21 | 藤森工業株式会社 | Surface protective film and optical components to which it is attached |
JP6781295B2 (en) * | 2019-04-10 | 2020-11-04 | 藤森工業株式会社 | A release film for a surface protective film and a surface protective film for an optical film to which it is attached. |
JP6864044B2 (en) * | 2019-07-10 | 2021-04-21 | 藤森工業株式会社 | Release film for antistatic surface protection film |
JP2021165040A (en) * | 2020-08-27 | 2021-10-14 | 藤森工業株式会社 | Release film for surface protective film, and surface protective film for optical film with the release film laminated thereto |
CN112961618A (en) * | 2021-02-06 | 2021-06-15 | 四川兆纪光电科技有限公司 | Optical protective film, preparation method thereof and optical component |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101421104A (en) * | 2007-03-16 | 2009-04-29 | 东丽世韩有限公司 | Antistatic silicone release coating films |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4279118B2 (en) | 2003-10-30 | 2009-06-17 | 藤森工業株式会社 | Surface protective film and optical component on which it is adhered |
JP3912686B2 (en) | 2004-04-19 | 2007-05-09 | 日東電工株式会社 | Adhesive composition, adhesive layer, and surface protective film |
JP2005314476A (en) | 2004-04-27 | 2005-11-10 | Nitto Denko Corp | Adhesive composition, adhesive sheet and surface-protective film |
JP4627638B2 (en) * | 2004-06-21 | 2011-02-09 | 大日本印刷株式会社 | Hologram transfer foil, hologram transfer method, and hologram transfer article |
JP4799900B2 (en) | 2004-10-28 | 2011-10-26 | 日東電工株式会社 | Adhesive composition, adhesive sheet and surface protective film |
JP4611084B2 (en) * | 2005-03-31 | 2011-01-12 | リンテック株式会社 | Release film |
JP4672600B2 (en) * | 2006-05-31 | 2011-04-20 | 大日精化工業株式会社 | Antistatic film and coating material for forming antistatic layer |
JP2008075072A (en) * | 2006-08-24 | 2008-04-03 | Diatex Co Ltd | Easily peelbale adhesive sheet and its production method |
US8137417B2 (en) * | 2006-09-29 | 2012-03-20 | Semiconductor Energy Laboratory Co., Ltd. | Peeling apparatus and manufacturing apparatus of semiconductor device |
JP5130768B2 (en) * | 2007-03-30 | 2013-01-30 | 大日本印刷株式会社 | Protective film for optical member, method for producing protective film for optical member, and protective film raw material for optical member |
CN101357521B (en) * | 2008-09-02 | 2012-06-13 | 中国乐凯胶片集团公司 | Off film |
JP5406615B2 (en) * | 2009-07-15 | 2014-02-05 | 日東電工株式会社 | Transparent film and surface protective film using the film |
JP5587645B2 (en) * | 2010-03-18 | 2014-09-10 | リンテック株式会社 | Optical pressure-sensitive adhesive, optical pressure-sensitive adhesive sheet, and optical member with a pressure-sensitive adhesive layer |
JP5723618B2 (en) * | 2011-02-04 | 2015-05-27 | 日東電工株式会社 | Adhesive sheet and surface protective film |
JP5749076B2 (en) * | 2011-05-19 | 2015-07-15 | 藤森工業株式会社 | Surface protective film and optical component to which it is attached |
JP5852998B2 (en) * | 2013-07-29 | 2016-02-09 | 藤森工業株式会社 | Surface protective film and optical component on which it is bonded |
JP5853001B2 (en) * | 2013-08-13 | 2016-02-09 | 藤森工業株式会社 | Surface protective film and optical component on which it is bonded |
-
2013
- 2013-08-20 JP JP2013170660A patent/JP5882266B2/en active Active
-
2014
- 2014-06-30 KR KR1020140080781A patent/KR101589094B1/en active IP Right Grant
- 2014-07-02 CN CN201410312177.5A patent/CN104419338B/en active Active
- 2014-07-11 TW TW103124008A patent/TWI532804B/en active
- 2014-07-11 TW TW105108764A patent/TWI580747B/en active
-
2016
- 2016-01-21 KR KR1020160007343A patent/KR101614732B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101421104A (en) * | 2007-03-16 | 2009-04-29 | 东丽世韩有限公司 | Antistatic silicone release coating films |
Also Published As
Publication number | Publication date |
---|---|
JP5882266B2 (en) | 2016-03-09 |
KR101614732B1 (en) | 2016-04-22 |
TW201623527A (en) | 2016-07-01 |
KR101589094B1 (en) | 2016-01-27 |
JP2015039788A (en) | 2015-03-02 |
TW201508038A (en) | 2015-03-01 |
CN104419338A (en) | 2015-03-18 |
TWI532804B (en) | 2016-05-11 |
KR20160014748A (en) | 2016-02-11 |
CN104419338B (en) | 2016-09-14 |
KR20150021445A (en) | 2015-03-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TWI580747B (en) | Peeling film for antistatic surface protection film | |
TWI622495B (en) | Surface protection film and optical component attached with the same | |
TWI527694B (en) | Surface protection film and optical component attached with the same | |
TWI538972B (en) | Surface protection film and optical component attached with the same | |
TWI617646B (en) | Method for production antistatic surface protection film, and antistatic surface protection film | |
TW201936397A (en) | Surface-protective film and optical component attached with the same | |
TWI726923B (en) | Surface-protective film and optical component attached with the same | |
TW202332589A (en) | Manufacturing method of optical component | |
KR101968924B1 (en) | Release film for antistatic surface-protective film | |
JP6076517B2 (en) | Release film for antistatic surface protection film | |
JP6655681B2 (en) | Release film for antistatic surface protection film | |
JP2023099604A (en) | Surface protective film for optical film | |
JP2020203490A (en) | Surface protective film, and optical component with the same stuck thereto | |
TW201731695A (en) | Surface-protective film and optical component attached with the same |