TW202400390A

TW202400390A - Method for manufacturing sheet film

Info

Publication number: TW202400390A
Application number: TW112114209A
Authority: TW
Inventors: 平岡慎哉
Original assignee: 日商日東電工股份有限公司
Priority date: 2022-05-16
Filing date: 2023-04-17
Publication date: 2024-01-01
Also published as: WO2023223756A1; JP2023169175A; JP2023168973A; JP7340653B1

Abstract

In this method for transporting a long, strip-shaped raw fabric 1 having a first film, an adhesive layer, and a second film downstream with respect to the longitudinal direction, cutting the raw fabric 1 with a cutting blade 51, and obtaining a plurality of sheet films 2, the raw fabric 1 is cut so as to partition the raw fabric 1 into a plurality of sheet films 2 and an unneeded portion 3 that has a reticulated shape in plan view remaining around the sheet films 2, and immediately after the cutting, the unneeded portion 3 is pulled out and removed.

Description

單片薄膜的製造方法Monolithic film manufacturing method

本發明是有關於一種將包含黏著劑層之原片切斷來製造複數個單片薄膜之方法。The present invention relates to a method for manufacturing a plurality of single-piece films by cutting an original sheet containing an adhesive layer.

以往，2個薄膜之間具有黏著劑層之製品已被使用在各種用途上。例如，具有黏著劑層之光學薄膜是形成為配合影像顯示裝置等畫面之預定的平面視角形狀，而組入影像顯示裝置等畫面。在本說明書中，將形成為預定形狀之薄膜稱為「單片薄膜」。前述單片薄膜一般可藉由從具有薄膜/黏著劑層/薄膜之長條帶狀原片切出而製得。已切出之單片薄膜可直接作為製品來使用、或是在進一步進行任意之切斷加工等之後才作為製品來使用。例如，於專利文獻1揭示有一種薄膜製品之製造方法，其具有以下步驟：將具有光學薄膜、黏著劑層與分離件薄膜(剝離襯材)之光學薄膜原片切斷，並將前述光學薄膜原片的面內區劃成切斷剩餘部與前述薄膜製品，前述切斷剩餘部具有朝長邊方向延伸之複數個縱帶與朝短邊方向延伸之複數個橫帶，前述薄膜製品是被前述縱帶與橫帶包圍；及藉由在搬送前述光學薄膜原片之中途將前述切斷剩餘部拉出，而將前述切斷剩餘部和前述薄膜製品分離並去除，前述製造方法是以不使前述薄膜製品浮起之方式進行按壓且在不按壓前述切斷剩餘部的縱帶的情形下，將前述切斷剩餘部拉出並去除。 In the past, products with an adhesive layer between two films have been used for various purposes. For example, the optical film with the adhesive layer is formed to match a predetermined plane viewing angle shape of the screen of the image display device and the like, and is incorporated into the screen of the image display device and the like. In this specification, a film formed into a predetermined shape is called a "single-piece film". The aforementioned single-piece film can generally be produced by cutting out a strip-shaped original sheet having a film/adhesive layer/film. The cut single piece of film can be used as a product directly, or can be used as a product after further arbitrary cutting processing, etc. For example, Patent Document 1 discloses a method for manufacturing a film product, which includes the following steps: cutting an original optical film sheet having an optical film, an adhesive layer, and a separator film (release liner), and cutting the optical film The in-plane area of the original sheet is divided into a cut remaining portion and the aforementioned film product. The aforementioned cut remaining portion has a plurality of longitudinal bands extending in the long side direction and a plurality of transverse bands extending in the short side direction. The aforementioned film product is formed by the aforementioned Surrounding the vertical belt and the horizontal belt; and by pulling out the cutting remaining portion in the middle of transporting the optical film original sheet, the cutting remaining portion and the film product are separated and removed. The manufacturing method is such that no The film product is pressed in such a manner that it floats, and the cut remaining portion is pulled out and removed without pressing the longitudinal strips of the cut remaining portion.

根據專利文獻1之方法，不會有在拉出切斷剩餘部時薄膜製品追隨於切斷剩餘部之情形，而可以將切斷剩餘部確實地從薄膜製品分離並去除。先前技術文獻專利文獻 According to the method of Patent Document 1, the film product does not follow the cut remainder when the cut remainder is pulled out, and the cut remainder can be reliably separated and removed from the film product. Prior technical literature patent documents

專利文獻1：日本特開2021-164984號公報Patent Document 1: Japanese Patent Application Publication No. 2021-164984

順道一提，若將於2個薄膜之間設有黏著劑層之原片切斷，在切斷線上產生之2個切斷端面是相向的。因此，會有黏著劑層的黏著劑在前述切斷端面上附著之疑慮。若黏著劑於切斷後附著，在將切斷剩餘部(不需要部分)拉出時，已附著之黏著劑會在像絲線一般地被拉伸之後被扯斷。因此，像絲線一般地被拉伸之黏著劑會附著於單片薄膜的正面等，而有單片薄膜或其周邊被黏著劑弄髒之疑慮。發明欲解決之課題 By the way, if the original piece with the adhesive layer between the two films is cut, the two cut end surfaces produced on the cutting line are facing each other. Therefore, there is a concern that the adhesive of the adhesive layer adheres to the cut end surface. If the adhesive adheres after cutting, when the remaining part of the cut (unnecessary part) is pulled out, the adhered adhesive will be stretched like a thread and then torn off. Therefore, the adhesive stretched like a thread will adhere to the front surface of the single film, etc., and there is a concern that the single film or its periphery will be stained by the adhesive. The problem to be solved by the invention

本發明之目的在於提供一種單片薄膜的製造方法，其在將具有第1薄膜、黏著劑層與第2薄膜之原片切斷之後，於去除不需要部分時，可以防止黏著劑的拉絲。用以解決課題之手段 The object of the present invention is to provide a method for manufacturing a single-piece film, which can prevent the adhesive from stringing when removing unnecessary parts after cutting the original film including the first film, the adhesive layer and the second film. means to solve problems

本發明是一種將具有第1薄膜、黏著劑層與第2薄膜之長條帶狀的原片朝長邊方向下游側搬送，並以切斷刀刃切斷前述原片來製得複數個單片薄膜之方法，前述方法是進行以下步驟：將前述原片以區劃成複數個單片薄膜、與殘留在前述各單片薄膜的周圍之平面視角下為網孔狀之不需要部分的方式來切斷；及在前述切斷之後，隨即將前述不需要部分拉出並去除。 The present invention is a method of transporting a long strip-shaped original sheet having a first film, an adhesive layer and a second film toward the downstream side in the longitudinal direction, and cutting the original sheet with a cutting blade to produce a plurality of individual pieces. Thin film method, the aforementioned method is to carry out the following steps: Cut the aforementioned original sheet into a plurality of single-piece films and an unnecessary portion that remains in the shape of a mesh in a plan view around each of the aforementioned single-piece films; and After the aforementioned cutting, the aforementioned unnecessary portion is pulled out and removed.

本發明之較佳的製造方法為：將已被區劃成前述複數個單片薄膜與不需要部分之原片，在搬送到距離最下游側的切斷位置300cm以內以前，將前述不需要部分拉出並去除。本發明之較佳的製造方法為：前述原片的第1薄膜包含偏光薄膜。發明效果 A preferred manufacturing method of the present invention is to take the original film that has been divided into the plurality of individual films and unnecessary parts, and then pull the unnecessary parts before transporting it to within 300 cm from the cutting position on the most downstream side. out and removed. A preferred manufacturing method of the present invention is that the first film of the original film includes a polarizing film. Invention effect

根據本發明之製造方法，黏著劑難以在不需要部分與單片薄膜的切斷端面上附著，而可以在將不需要部分拉出時防止產生黏著劑的拉絲。據此，根據本發明，可以防止單片薄膜或其周邊被黏著劑弄髒之情形。According to the manufacturing method of the present invention, it is difficult for the adhesive to adhere to the cut end surface of the single film between the unnecessary parts, and it is possible to prevent the adhesive from stringing when the unnecessary parts are pulled out. Accordingly, according to the present invention, it is possible to prevent a single film or its periphery from being stained by adhesive.

用以實施發明之形態Form used to implement the invention

在本說明書中，「平面視角」是指相對於對象物的面從鉛直方向來觀看之情形，「平面視角形狀」以及「平面圖」是指相對於對象物的面從鉛直方向來觀看時之對象物的形狀以及圖式。又，在本說明書中，所謂「大致」的表現意指包含本發明的技術領域中可容許的範圍。此外，在本說明書中，在個別地記載有複數個以「下限值以上且上限值以下」來表示之數值範圍的情況下，是當作可選擇任意下限值與任意上限值。 In this specification, "plan view" refers to the object when viewed from the vertical direction with respect to the surface of the object, and "plan view shape" and "plan view" refer to the object when viewed from the vertical direction with respect to the surface of the object. The shapes and patterns of objects. In addition, in this specification, the expression "approximately" means including the permissible range in the technical field of this invention. In addition, in this specification, when a plurality of numerical ranges expressed as "above the lower limit value and below the upper limit value" are individually described, it is deemed that an arbitrary lower limit value and an arbitrary upper limit value can be selected.

[單片薄膜的製造裝置] 圖5以及圖6是顯示單片薄膜2的製造裝置A。參照圖5以及圖6，製造裝置A具有：搬送部B，搬送原片1或單片薄膜2；切斷處理部C，將前述原片1切斷成複數個單片薄膜2與平面視角下為網孔狀之不需要部分3；去除部D，將前述不需要部分3去除；及累積部E。 [Single film manufacturing equipment] 5 and 6 show the manufacturing apparatus A of the single film 2 . Referring to FIGS. 5 and 6 , the manufacturing apparatus A has: a conveyor B that conveys the original film 1 or a single film 2; and a cutting processing part C that cuts the original film 1 into a plurality of individual films 2 and 2 from a plan view. It is a mesh-shaped unnecessary part 3; a removal part D, which removes the aforementioned unnecessary part 3; and an accumulation part E.

＜原片＞本發明之製造裝置A是將長條帶狀原片1的面內切斷，且將不需要部分3去除來製得單片薄膜2之裝置。原片1通常為如圖1所示之長條帶狀。不過，在圖1中，是將長條帶狀的原片1的長邊方向一側省略。原片1是以捲繞成捲狀之狀態，設置(set)於原片進給部的捲出部41。在此，在本說明書中，長條帶狀是指長邊方向的長度比短邊方向充分地長之平面視角下的大致長方形狀。原片1的長邊方向的長度例如為5m以上，較佳的是，長邊方向的長度為10m以上。再者，短邊方向是和長邊方向正交之方向。＜Original film＞ The manufacturing device A of the present invention is a device that cuts the long strip-shaped original sheet 1 in-plane and removes the unnecessary portion 3 to produce a single piece of film 2. The original piece 1 is usually in the shape of a long strip as shown in Figure 1 . However, in FIG. 1 , one longitudinal side of the long strip-shaped original sheet 1 is omitted. The original film 1 is set in the unwinding portion 41 of the original film feeding portion in a state of being wound into a roll. Here, in this specification, the elongated strip shape refers to a substantially rectangular shape in a plan view with the length in the long side direction being sufficiently longer than the short side direction. The length of the original sheet 1 in the longitudinal direction is, for example, 5 m or more. Preferably, the length in the longitudinal direction is 10 m or more. Furthermore, the short side direction is a direction orthogonal to the long side direction.

如圖2所示，從原片1製得之單片薄膜2在平面視角下是形成為預定形狀。亦即，單片薄膜2是從原片1形成為預定形狀之薄膜。在圖2中，圖示有平面視角下呈大致長方形之單片狀的單片薄膜2。單片薄膜2的平面視角形狀並未特別限定。例如，單片薄膜2的平面視角形狀可列舉：大致矩形狀(大致矩形狀為大致長方形狀或大致正方形狀)、大致三角形狀、大致六角形狀等之大致多角形狀、大致圓形狀、大致橢圓形狀、組合了這些形狀之形狀、或任意的異形形狀等。大致矩形狀、大致三角形狀以及大致多角形狀的「大致」包含例如角部已被倒角之形狀、邊的一部分呈略微膨脹或凹陷之形狀、邊呈稍微彎曲之形狀等。又，大致圓形形狀以及大致橢圓形狀的「大致」包含例如周邊的一部分呈略微膨脹或凹陷之形狀、周邊的一部分呈稍微直線或斜線之形狀等。As shown in FIG. 2 , the single film 2 produced from the original film 1 is formed into a predetermined shape in a plan view. That is, the individual film 2 is a film formed into a predetermined shape from the original film 1 . In FIG. 2 , a single piece of film 2 is shown which is substantially rectangular in plan view. The plan view shape of the single film 2 is not particularly limited. For example, the plan view shape of the single film 2 may include a substantially rectangular shape (a substantially rectangular shape is a substantially rectangular shape or a substantially square shape), a substantially triangular shape, a substantially hexagonal shape, a substantially polygonal shape, a substantially circular shape, and a substantially elliptical shape. , a combination of these shapes, or any special shape, etc. The "roughly" of a substantially rectangular shape, a substantially triangular shape, and a substantially polygonal shape includes, for example, a shape in which the corners are chamfered, a shape in which a part of the sides is slightly expanded or depressed, a shape in which the sides are slightly curved, and the like. In addition, the "substantially" of a substantially circular shape and a substantially elliptical shape includes, for example, a shape in which a part of the periphery is slightly expanded or depressed, a part in which a part of the periphery is a slightly straight line or a diagonal shape, and the like.

單片薄膜2為最終的製品或製品的中間體。前述製品的中間體是製作製品的中途之構成，且可藉由進一步對該中間體施行切斷及/或表面處理等之適當的加工而製得製品。前述製品的用途並未特別限定。可從單片薄膜2製得之製品可為例如：組入圖像顯示裝置的畫面或太陽眼鏡的透鏡等之光學性零件或機械性零件；黏性標籤(tack label)等密封材；包裝薄膜(wrapping film)等包裝材；電磁波屏蔽等電氣性零件等。特別是，從要求較高的清潔性的觀點來看，較佳的是將本發明的方法應用在用於形成光學性零件用途之製品上。 The single piece of film 2 is the final product or an intermediate product. The intermediate of the product is a component in the process of producing the product, and the product can be produced by further subjecting the intermediate to appropriate processing such as cutting and/or surface treatment. The use of the aforementioned products is not particularly limited. Products that can be produced from the single film 2 may be, for example, optical or mechanical parts incorporated into a screen of an image display device or a lens of sunglasses; sealing materials such as a tack label; packaging film (wrapping film) and other packaging materials; electromagnetic wave shielding and other electrical parts, etc. In particular, from the viewpoint of requiring high cleaning properties, it is preferable to apply the method of the present invention to products for use in forming optical parts.

在層構成的觀點下，原片1具有第1薄膜、第2薄膜、與設置於前述第1薄膜和第2薄膜之間的黏著劑層。單片薄膜2的層構成也和原片1的層構成相同，且單片薄膜2也具有第1薄膜、第2薄膜、與設置於前述第1薄膜和第2薄膜之間的黏著劑層。因為單片薄膜2的層構成和原片1的層構成是相同的，所以說明原片1的層構成，單片薄膜2的層構成的說明則省略。原片1亦可為：以具有第1薄膜/黏著劑層/第2薄膜之積層構造為條件，而更具有其他的薄膜或層。 From the viewpoint of layer structure, the original film 1 has a first film, a second film, and an adhesive layer provided between the first film and the second film. The layer structure of the single-piece film 2 is also the same as that of the original film 1, and the single-piece film 2 also has a first film, a second film, and an adhesive layer provided between the first film and the second film. Since the layer structure of the single film 2 is the same as that of the original film 1, the layer structure of the original film 1 will be described, while the description of the layer structure of the single film 2 will be omitted. The original film 1 may also have a laminated structure of the first film/adhesive layer/second film, and may also have other films or layers.

以下，例示地說明光學性零件用途之幾個原片1的層構成例。圖3是顯示原片1的1種層構成例的側面圖，圖4是顯示原片1的其他的層構成例的側面圖。圖3所示之原片1從正面側起依序具有第1薄膜11、黏著劑層15與第2薄膜12。在原片1的周圍，前述第1薄膜11以及第2薄膜12的各端面11a、12a與前述黏著劑層15的端面15a為平行地延伸。換言之，第1薄膜11的端面11a、黏著劑層15的端面15a與第2薄膜12的端面12a是連續而形成1個平面。因此，原片1的端面是由第1薄膜11、黏著劑層15以及第2薄膜12的各端面11a、15a、12a的集合所構成。再者，在本說明書中，端面是沿著厚度方向之面，正面以及背面是和厚度方向正交之面。圖4所示之原片1從正面側起依序具有第3薄膜13、第1黏著劑層151、第1薄膜11、第2黏著劑層152與第2薄膜12。在原片1的周圍，前述第1至第3薄膜11、12、13的各端面11a、12a、13a、與前述第1以及第2黏著劑層151、152的各端面151a、152a為平行地延伸。換言之，各薄膜11、12、13的端面11a、12a、13a與各黏著劑層151、152的各端面151a、152a是連續而形成1個平面。其他，雖然未圖示，但原片1亦可更具有其他薄膜及/或黏著劑層。關於具有前述其他的薄膜及/或黏著劑層之原片1，也是各薄膜的端面與各黏著劑層的端面連續而形成1個平面。 Hereinafter, several examples of the layer structure of the original sheet 1 used for optical components will be described as examples. FIG. 3 is a side view showing one example of the layer structure of the original film 1 , and FIG. 4 is a side view showing another example of the layer structure of the original film 1 . The original sheet 1 shown in FIG. 3 has a first film 11, an adhesive layer 15 and a second film 12 in order from the front side. Around the original sheet 1 , the end surfaces 11 a and 12 a of the first film 11 and the second film 12 extend in parallel with the end surface 15 a of the adhesive layer 15 . In other words, the end surface 11a of the first film 11, the end surface 15a of the adhesive layer 15, and the end surface 12a of the second film 12 are continuous and form one plane. Therefore, the end surface of the original sheet 1 is composed of the set of end surfaces 11a, 15a, and 12a of the first film 11, the adhesive layer 15, and the second film 12. In addition, in this specification, the end surface is a surface along the thickness direction, and the front surface and the back surface are surfaces orthogonal to the thickness direction. The original sheet 1 shown in FIG. 4 has the third film 13, the first adhesive layer 151, the first film 11, the second adhesive layer 152 and the second film 12 in order from the front side. Around the original sheet 1, the end surfaces 11a, 12a, 13a of the first to third films 11, 12, 13 and the end surfaces 151a, 152a of the first and second adhesive layers 151, 152 extend in parallel. . In other words, the end surfaces 11a, 12a, 13a of each film 11, 12, 13 and the end surfaces 151a, 152a of each adhesive layer 151, 152 are continuous and form a plane. In addition, although not shown in the figure, the original film 1 may also have other films and/or adhesive layers. Regarding the original sheet 1 having the aforementioned other films and/or adhesive layers, the end surfaces of each film and the end surfaces of each adhesive layer are continuous to form a flat surface.

光學性零件用途之原片1包含有光學薄膜。在此情況下，亦可為第1薄膜11等的全部的薄膜均為光學薄膜、或者亦可為選自於複數個薄膜之至少1個薄膜為光學薄膜且至少1個薄膜為光學薄膜以外的薄膜。在圖3所示之層構成中為例如：第1薄膜11為光學薄膜，第2薄膜12為剝離襯材(光學薄膜以外的薄膜)，在圖4所示之層構成中為例如：第1薄膜11以及第3薄膜13為光學薄膜，第2薄膜12為剝離襯材。在圖3中，是例如使用後述之光學功能薄膜來作為第1薄膜11。在圖4中，是例如使用後述之光學功能薄膜來作為第1薄膜11，且使用後述之保護薄膜來作為第3薄膜13。剝離襯材為對黏著劑層15、152以可剝離之方式接著。從而，剝離襯材與黏著劑層15、152可以在其等的界面剝離，而光學薄膜與黏著劑層15、152則難以剝離。使用時，是將剝離襯材剝下來去除。再者，在圖4之第3薄膜13為保護薄膜的情況下，亦可做成該第3薄膜13可以伴隨黏著劑層151來從第1薄膜11剝離，或者亦可做成第3薄膜13是以難以從第1薄膜11剝離的狀態隔著黏著劑層151被接著。 The original film 1 used for optical parts includes optical film. In this case, all the films such as the first film 11 may be optical films, or at least one film selected from a plurality of films may be an optical film and at least one film may be other than an optical film. film. In the layer structure shown in FIG. 3 , for example, the first film 11 is an optical film, and the second film 12 is a release liner (a film other than the optical film). In the layer structure shown in FIG. 4 , for example, the first film 11 is an optical film. The film 11 and the third film 13 are optical films, and the second film 12 is a release liner. In FIG. 3 , for example, an optically functional film described below is used as the first film 11 . In FIG. 4 , for example, an optically functional film to be described later is used as the first film 11 , and a protective film to be described later is used as the third film 13 . The release liner is releasably adhered to the adhesive layers 15 and 152 . Therefore, the release liner and the adhesive layers 15 and 152 can be peeled off at their interfaces, but the optical film and the adhesive layers 15 and 152 are difficult to peel off. During use, peel off the release liner and remove it. Furthermore, when the third film 13 in FIG. 4 is a protective film, the third film 13 can be peeled off from the first film 11 along with the adhesive layer 151, or the third film 13 can be made into a protective film. It is adhered via the adhesive layer 151 in a state that is difficult to peel off from the first film 11 .

光學薄膜可列舉光學功能薄膜、保護薄膜等。光學薄膜可為1層構造、或者亦可為2層以上的多層構造。在光學薄膜為2層以上之多層構造的情況下，可為積層有2層以上之具有相同的功能之薄膜的積層體，亦可為積層有2層以上之具有不同的功能之薄膜的積層體。作為前述具有不同的功能之薄膜的積層體，可列舉例如偏光薄膜與相位差薄膜之積層體、偏光薄膜與保護薄膜之積層體等。作為前述光學功能薄膜，可列舉偏光薄膜、相位差薄膜、光擴散薄膜、增亮薄膜、防眩薄膜、光反射薄膜等。偏光薄膜是具有以下性質之薄膜：供朝特定的1個方向振動之光(偏光)穿透，並遮擋朝該特定的1個方向以外的方向振動之光。相位差薄膜是顯示光學各向異性之薄膜，代表性的可列舉例如丙烯酸系樹脂、環烯烴系樹脂、纖維素系樹脂等之延伸薄膜等。又，保護薄膜是在保護前述光學功能薄膜的目的下所使用之薄膜。作為保護薄膜，典型上可使用無色透明的薄膜。光學薄膜之厚度並無特別限定，可為例如5μm以上且300μm以下。 Optical films include optical functional films, protective films, and the like. The optical film may have a single-layer structure or a multi-layer structure of two or more layers. When the optical film has a multilayer structure of two or more layers, it may be a laminated body in which two or more layers of films having the same function are laminated, or a laminated body in which two or more layers of films having different functions are laminated . Examples of the laminate of films having different functions include a laminate of a polarizing film and a retardation film, a laminate of a polarizing film and a protective film, and the like. Examples of the optically functional film include polarizing films, retardation films, light diffusion films, brightness enhancement films, anti-glare films, light reflection films, and the like. A polarizing film is a film that allows light vibrating in one specific direction (polarized light) to pass through and blocks light that vibrates in directions other than the specific one direction. The retardation film is a film showing optical anisotropy, and typical examples thereof include stretched films of acrylic resin, cycloolefin resin, cellulose resin, and the like. In addition, the protective film is a film used for the purpose of protecting the aforementioned optically functional film. As the protective film, a colorless and transparent film is typically used. The thickness of the optical film is not particularly limited, but may be, for example, 5 μm or more and 300 μm or less.

剝離襯材具有對前述黏著劑層剝離性優異之脫模面。作為剝離襯材，可列舉例如聚乙烯、聚丙烯、聚對苯二甲酸乙二酯、聚酯薄膜等之樹脂薄膜；紙；織布、不織布、網布等之多孔質薄膜；發泡樹脂薄膜等。從表面平滑性優異的方面來看，剝離襯材宜為樹脂薄膜。前述樹脂薄膜可列舉例如：聚對苯二甲酸乙二酯薄膜、聚對苯二甲酸丁二酯薄膜、聚乙烯薄膜、聚丙烯薄膜、聚丁烯薄膜、聚丁二烯薄膜、聚甲基戊烯薄膜、聚氯乙烯薄膜、氯乙烯共聚物薄膜、聚胺甲酸酯薄膜、乙烯-乙酸乙烯酯共聚物薄膜等。前述剝離襯材的厚度並無特別限定，可為例如為5μm以上且200μm以下，較佳是10μm以上且100μm以下。 The release liner has a release surface excellent in releasability to the adhesive layer. Examples of the release liner include resin films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films; paper; porous films such as woven fabric, nonwoven fabric, and mesh; and foamed resin films. wait. From the viewpoint of excellent surface smoothness, the release liner is preferably a resin film. Examples of the resin film include polyethylene terephthalate film, polybutylene terephthalate film, polyethylene film, polypropylene film, polybutylene film, polybutadiene film, and polymethylpentene film. vinyl film, polyvinyl chloride film, vinyl chloride copolymer film, polyurethane film, ethylene-vinyl acetate copolymer film, etc. The thickness of the release liner is not particularly limited, and may be, for example, 5 μm or more and 200 μm or less, preferably 10 μm or more and 100 μm or less.

黏著劑層是在常溫下具有黏著性且在剝離後黏著性仍持續而可再貼附之構成。黏著劑層是藉由習知的黏著劑來構成。作為前述黏著劑，可列舉無色透明的丙烯酸系黏著劑、橡膠系黏著劑、聚矽氧系黏著劑、胺甲酸酯系黏著劑、乙烯基烷基醚系黏著劑、聚乙烯吡咯啶酮系黏著劑、聚丙烯醯胺系黏著劑、纖維素系黏著劑等。將本發明的方法應用在具有藉由相對較柔軟之黏著劑所形成之黏著劑層的原片1會特別有效。黏著劑的硬度可以為例如以儲存彈性模數G’來作指標。作為前述較柔軟之黏著劑，可為例如：在25℃下之儲存彈性模數G’為0.001MPa以上且1MPa以下，較佳的是0.01MPa以上且1MPa以下。前述儲存彈性模數可藉由動態黏彈性測定來測定。具體而言，可以使用動態黏彈性測定裝置(德州儀器(TA Instrument)公司製造之裝置名稱「ARES」之裝置)，在頻率1Hz之條件下以-20~100℃之溫度範圍、以升溫速度5℃/分鐘來測定黏著劑層，而計算在25℃下之儲存彈性模數G’。前述黏著劑層的厚度並無特別限定，可為例如0.1μm以上且50μm以下，較佳為1μm以上且30μm以下。 The adhesive layer is adhesive at room temperature and remains adhesive after peeling off, allowing it to be reattached. The adhesive layer is composed of a conventional adhesive. Examples of the adhesive include colorless and transparent acrylic adhesives, rubber adhesives, silicone adhesives, urethane adhesives, vinyl alkyl ether adhesives, and polyvinylpyrrolidone adhesives. Adhesives, polyacrylamide-based adhesives, cellulose-based adhesives, etc. It is particularly effective to apply the method of the present invention to the original piece 1 having an adhesive layer formed by a relatively soft adhesive. The hardness of the adhesive can be indexed, for example, by storage elastic modulus G'. As the aforementioned relatively soft adhesive, for example, the storage elastic modulus G' at 25°C is 0.001 MPa or more and 1 MPa or less, preferably 0.01 MPa or more and 1 MPa or less. The aforementioned storage elastic modulus can be measured by dynamic viscoelasticity measurement. Specifically, a dynamic viscoelasticity measuring device (device name "ARES" manufactured by Texas Instruments (TA Instrument)) can be used to measure the temperature in the temperature range of -20 to 100°C at a frequency of 1 Hz and a heating rate of 5 °C/min to measure the adhesive layer and calculate the storage elastic modulus G' at 25 °C. The thickness of the adhesive layer is not particularly limited, and may be, for example, 0.1 μm or more and 50 μm or less, preferably 1 μm or more and 30 μm or less.

＜搬送部＞參照圖5以及圖6，製造裝置A的搬送部B具有：原片進給部，輸送原片1；及至少1個輸送機皮帶，搬送切斷前後之原片1以及複數個單片薄膜2。前述原片進給部具有：捲出部41，裝填有捲繞成捲材之原片1；導引輥42，引導原片1；及驅動裝置(未圖示)。前述原片進給部是從捲出部41將原片1捲出，並將該原片1從長邊方向上游側往下游側搬送。再者，原片1的長邊方向與搬送方向為相同方向，且原片1的短邊方向與寬度方向為相同方向。又，第1輸送機皮帶43是供切斷前後之原片1放置並進行搬送。在該第1輸送機皮帶43的中途的上方，配置有切斷處理部C，此外，在緊接於切斷處理部C之下游側配置有去除部D。第2輸送機皮帶44是供複數個單片薄膜2放置並進行搬送。在第2輸送機皮帶44的下游側配置有收集單片薄膜2之累積部E。再者，在第1輸送機皮帶43的端部與第2輸送機皮帶44的端部之間設置有跨接板45。＜Transportation Department＞ Referring to FIGS. 5 and 6 , the transport section B of the manufacturing apparatus A has an original sheet feeding section that transports the original sheet 1 , and at least one conveyor belt that transports the original sheet 1 before and after cutting and a plurality of individual films 2 . . The original film feeding part has: a winding-out part 41 loaded with the original film 1 wound into a roll; a guide roller 42 to guide the original film 1; and a driving device (not shown). The original sheet feeding unit unwinds the original sheet 1 from the unwinding unit 41 and conveys the original sheet 1 from the upstream side to the downstream side in the longitudinal direction. Furthermore, the longitudinal direction of the original sheet 1 and the conveyance direction are the same direction, and the short-side direction and the width direction of the original sheet 1 are the same direction. In addition, the first conveyor belt 43 is for placing and conveying the original sheet 1 before and after cutting. A cutting unit C is arranged above the first conveyor belt 43 , and a removal unit D is arranged immediately downstream of the cutting unit C. The second conveyor belt 44 is for placing and conveying a plurality of individual films 2 . On the downstream side of the second conveyor belt 44, an accumulation section E for collecting the individual films 2 is arranged. Furthermore, a bridge plate 45 is provided between the end of the first conveyor belt 43 and the end of the second conveyor belt 44 .

＜切斷處理部＞參照圖5以及圖6，切斷處理部C具有切割器裝置。切割器裝置具有切斷刀刃51與基座板52。又，與切斷刀刃51相向，而設置有承接台53。承接台53是使用例如強度優異之鋼板等。前述承接台53是固定在製造裝置A的框架(未圖示)等。前述承接台53配置於第1輸送機皮帶43的背面側。第1輸送機皮帶43除了搬送切斷前後之原片1的功能以外，也作為刀刃承接構件而發揮功能。刀刃承接構件意指承接切斷刀刃51的刀尖之構件。在切斷原片1時，露出到原片1的背面側之切斷刀刃51的刀尖會藉由咬入第1輸送機皮帶43，而可以確實地切斷原片1且可以防止切斷刀刃51的刀尖劣化之情形。作為這種刀刃承接構件而發揮功能之第1輸送機皮帶43，可使用以下之片材：具有可以接收切斷刀刃51的刀尖之柔軟性，還具有即便前述刀尖進入也不會斷裂之程度的強度以及厚度。例如，作為第1輸送機皮帶43，可以使用合成樹脂製片材、橡膠製片材、不織布等。再者，亦可如專利文獻1(日本專利特開2021-164984號)所揭示，另外設置和輸送機皮帶呈獨立之刀刃承接片材。＜Cut processing section＞ Referring to FIGS. 5 and 6 , the cutting processing unit C includes a cutter device. The cutter device has a cutting blade 51 and a base plate 52 . Furthermore, a receiving base 53 is provided facing the cutting blade 51 . The receiving platform 53 is made of, for example, a steel plate having excellent strength. The receiving table 53 is a frame (not shown) fixed to the manufacturing apparatus A or the like. The receiving platform 53 is arranged on the back side of the first conveyor belt 43 . In addition to its function of conveying the original sheet 1 before and after cutting, the first conveyor belt 43 also functions as a blade receiving member. The blade receiving member means a member that receives the tip of the cutting blade 51 . When cutting the original sheet 1, the tip of the cutting blade 51 exposed to the back side of the original sheet 1 bites into the first conveyor belt 43, thereby reliably cutting the original sheet 1 and preventing cutting. Deterioration of the tip of blade 51. The first conveyor belt 43 that functions as such a blade receiving member can be made of a sheet material that is flexible enough to receive the tip of the cutting blade 51 and that does not break even if the tip of the cutting blade 51 enters. degree of strength and thickness. For example, as the first conveyor belt 43, a synthetic resin sheet material, a rubber sheet material, a nonwoven fabric, or the like can be used. Furthermore, as disclosed in Patent Document 1 (Japanese Patent Application Laid-Open No. 2021-164984), a blade separate from the conveyor belt may be provided to receive the sheet.

前述切斷刀刃51是設置在基座板52。基座板52是平坦狀，且在該基座板52固定地設置有切斷刀刃51。切割器裝置(切斷刀刃51)是藉由未圖示之驅動裝置而相對於原片1的正面朝鉛直方向行進且退出。圖示例之切割器裝置會在上下方向上進退。切割器裝置是沖裁方式之切割器，其藉由下降來對原片1進行沖裁，且藉由上升而從原片1離開。如此的切割器裝置代表性地可以使用湯姆森刀刃。再者，切割器裝置不受限於沖裁方式，例如亦可使用旋轉模(rotary die)(未圖示)。又，切割器裝置只要是可以將原片1在厚度方向上切斷之裝置即可，並非限定於上述沖裁方式或旋轉模等之旋轉式。 The aforementioned cutting blade 51 is provided on the base plate 52 . The base plate 52 is flat, and the cutting blade 51 is fixedly provided on the base plate 52 . The cutter device (cutting blade 51) moves in the vertical direction relative to the front surface of the original sheet 1 and retreats by a driving device (not shown). The cutter device in the example shown in the figure will move forward and backward in the up and down direction. The cutter device is a punching type cutter, which punches the original sheet 1 by descending, and moves away from the original sheet 1 by rising. Such a cutter device may typically use a Thomson blade. Furthermore, the cutter device is not limited to the punching method. For example, a rotary die (not shown) may also be used. In addition, the cutter device only needs to be a device that can cut the original sheet 1 in the thickness direction, and is not limited to the above-mentioned punching method or the rotary type such as the rotary die.

圖7是包含切斷刀刃51之切割器裝置的放大立體圖。圖7之切割器裝置是從下方側觀看圖6之切割器裝置的立體圖，應留意的是，圖7的紙面上側是對應於圖6的紙面下側。又，於圖7中一併記載有將切斷刀刃51的立體的形狀部分地顯示出的放大圖。在圖7中，是在基座板52的表面突出設置有切斷刀刃51。一般而言，為了藉由1次的下降同時地沖裁出複數個單片薄膜2，而在1個基座板52設置複數個切斷刀刃51。前述各切斷刀刃51在平面視角下為無端環狀，且在原片1的搬送方向以及寬度方向上隔著一定間隔而設置。再者，在圖示例中，雖然是在原片1的搬送方向上配置有2排，且在寬度方向上配置有4排的切斷刀刃51，但是切斷刀刃51的數量並非限定於此。又，切斷刀刃51的平面視角下形狀並不受限於如圖示例之大致長方形狀，而是因應於所欲形成之單片薄膜2的形狀來設定。切斷刀刃51的刀尖51a之角度α並無特別限定，可為例如10度以上且100度以下，較佳的是20度以上且90度以下。藉由前述刀尖51a的角度α在前述範圍內，可以防止黏著劑在不需要部分3與單片薄膜2的切斷端面上再附著之情形。 FIG. 7 is an enlarged perspective view of the cutter device including the cutting blade 51 . The cutter device of FIG. 7 is a perspective view of the cutter device of FIG. 6 viewed from the lower side. It should be noted that the upper side of the paper in FIG. 7 corresponds to the lower side of the paper of FIG. 6 . In addition, an enlarged view partially showing the three-dimensional shape of the cutting blade 51 is also shown in FIG. 7 . In FIG. 7 , a cutting blade 51 is protrudingly provided on the surface of the base plate 52 . Generally speaking, a plurality of cutting blades 51 are provided on one base plate 52 in order to punch out a plurality of individual films 2 simultaneously with one descent. Each of the aforementioned cutting blades 51 has an endless ring shape when viewed from a plan view, and is provided at a certain interval in the conveyance direction and width direction of the original sheet 1 . Furthermore, in the illustrated example, two rows of cutting blades 51 are arranged in the conveyance direction of the original sheet 1 and four rows of cutting blades 51 are arranged in the width direction. However, the number of cutting blades 51 is not limited to this. In addition, the shape of the cutting blade 51 in plan view is not limited to the substantially rectangular shape as shown in the figure, but is set according to the shape of the single film 2 to be formed. The angle α of the cutting edge 51a of the cutting blade 51 is not particularly limited, and may be, for example, 10 degrees or more and 100 degrees or less, preferably 20 degrees or more and 90 degrees or less. By setting the angle α of the blade tip 51 a within the above range, it is possible to prevent the adhesive from re-adhering to the unnecessary portion 3 and the cut end surface of the single film 2 .

在切斷處理部C中，藉由將切割器裝置的切斷刀刃51從原片1的正面側壓抵於原片1，而在原片1的面內產生和切斷刀刃51的平面視角形狀相同形狀之切斷線。被此切斷線所包圍之內側部分會成為單片薄膜2，且該切斷線的外側部分會成為不需要部分3。圖8是顯示區劃成單片薄膜2與不需要部分3之原片1的平面圖。為了易於區別單片薄膜2與不需要部分3，在不需要部分3附加有無數個點。如圖8所示，已切斷之原片1的面內會被區劃成複數個單片薄膜2與平面視角下呈網孔狀之不需要部分3。前述不需要部分3是由在搬送方向上呈帶狀地延伸之複數個縱帶3a、與在寬度方向之呈帶狀地延伸之複數個橫帶3b所構成。由這樣的縱帶3a以及橫帶3b所構成之不需要部分3，在平面視角下是形成格子狀。再者，不需要部分3是以平面視角下為網孔狀為條件，並不受限於平面視角下呈格子狀，例如亦可為傾斜格子狀等。 In the cutting processing section C, by pressing the cutting blade 51 of the cutter device against the original sheet 1 from the front side of the original sheet 1, the plane view shape of the cutting blade 51 is generated in the surface of the original sheet 1 Cutting lines of the same shape. The inner part surrounded by this cutting line becomes the single film 2, and the outer part of this cutting line becomes the unnecessary part 3. FIG. 8 is a plan view showing the original film 1 divided into a single film 2 and an unnecessary portion 3 . In order to easily distinguish the single piece of film 2 from the unnecessary portion 3, countless dots are added to the unnecessary portion 3. As shown in Figure 8, the surface of the cut original sheet 1 will be divided into a plurality of single films 2 and unnecessary portions 3 that are mesh-like in plan view. The unnecessary portion 3 is composed of a plurality of vertical belts 3a extending in a belt shape in the conveyance direction, and a plurality of lateral belts 3b extending in a belt shape in the width direction. The unnecessary portion 3 composed of such vertical strips 3a and horizontal strips 3b forms a grid shape when viewed from a plan view. Furthermore, the condition that the unnecessary portion 3 is mesh-like in plan view is not limited to being in the shape of a lattice in plan view. For example, it may also be in the shape of an inclined lattice.

＜去除部＞去除部D是將殘留在已藉由切斷處理部C形成於原片1的面內之單片薄膜2(被切斷線所包圍之部分)的周圍之不需要部分3去除。圖9是從搬送方向下游側觀看去除部D之放大正面圖，圖10是將切斷處理部C以及去除部D沿著搬送方向來切斷之放大剖面圖。參照圖5、圖6、圖9以及圖10，去除部D具有分離構件61與回收輥62，且且因應於需要而更具有導引輥63，前述分離構件61是用於將前述不需要部分3與前述單片薄膜2分離，前述回收輥62是捲取前述不需要部分3。分離構件61是由在原片1的寬度方向上延伸之棒狀體所形成，且是例如由圓柱體所構成。再者，作為分離構件61，亦可使用已揭示於專利文獻1之具有按壓部與非按壓部之分離構件。＜Removed part＞ The removal part D removes the unnecessary part 3 remaining around the single film 2 (the part surrounded by the cutting line) formed in the surface of the original sheet 1 by the cutting part C. FIG. 9 is an enlarged front view of the removal portion D viewed from the downstream side in the conveyance direction, and FIG. 10 is an enlarged cross-sectional view of the cutting portion C and the removal portion D cut along the conveyance direction. Referring to Figures 5, 6, 9 and 10, the removal part D has a separation member 61 and a recovery roller 62, and further has a guide roller 63 as needed. The separation member 61 is used to remove the unnecessary parts. 3 is separated from the single piece of film 2, and the recovery roller 62 winds up the unnecessary portion 3. The separation member 61 is formed of a rod-shaped body extending in the width direction of the original sheet 1, and is composed of, for example, a cylinder. Furthermore, as the separation member 61, the separation member disclosed in Patent Document 1 and having a pressing part and a non-pressing part may be used.

分離構件61是配置成和已被區劃成不需要部分3與單片薄膜2之原片1的正面相接。在切斷處理部C中，原片1是在被區劃成不需要部分3與單片薄膜2後，被第1輸送機皮帶43搬送至去除部D。具體而言，是在已放置在第1輸送機皮帶43的狀態下，將已被區劃成複數個單片薄膜2與不需要部分3之原片1搬送至下游側。分離構件61是配置成和該搬送中途之原片1相接。藉由沿著分離構件61的周面拉出不需要部分3，不需要部分3即從以切斷線為分界而相鄰之單片薄膜2分離。以下，將已拉出不需要部分3時，不需要部分3與單片薄膜2分離之點稱為「分離點」。不需要部分3是藉由切割器裝置所進行之原片1的切斷而產生。根據本發明的發明人們的知識見解，藉由在將原片1切斷後，儘可能迅速地去除不需要部分3，可以防止黏著劑的拉絲。因此，較佳的是將前述分離構件61配置成前述分離點成為距離最下游側的切斷位置300cm以內，此外，更佳的是將前述分離構件61配置成前述分離點成為距離最下游側的切斷位置250cm以內。如圖10所示，前述最下游側的切斷位置是指以切斷刀刃51將原片1切斷時之位於最下游側(此下游側意指原片1的搬送方向下游側)之切斷位置。於圖10以符號L1表示從最下游側的切斷位置至分離點為止之距離。再者，從原片1的切斷時起至不需要部分3的拉出時為止之時間，可以從前述距離L1與原片1的搬送速度來求出。 The separation member 61 is disposed so that the portion 3 divided into unnecessary portions is in contact with the front surface of the original sheet 1 of the single film 2 . In the cutting processing section C, the original sheet 1 is divided into the unnecessary portion 3 and the single film 2, and then is conveyed to the removal section D by the first conveyor belt 43. Specifically, the original film 1 divided into a plurality of individual films 2 and unnecessary portions 3 is conveyed to the downstream side while being placed on the first conveyor belt 43 . The separation member 61 is disposed so as to be in contact with the original film 1 during transportation. By pulling out the unnecessary portion 3 along the circumferential surface of the separation member 61, the unnecessary portion 3 is separated from the adjacent single-piece film 2 with the cutting line as the boundary. Hereinafter, when the unnecessary part 3 has been pulled out, the point at which the unnecessary part 3 is separated from the single film 2 is called a "separation point". The unnecessary portion 3 is produced by cutting the original sheet 1 by the cutter device. According to the knowledge of the inventors of the present invention, by removing the unnecessary portion 3 as quickly as possible after cutting the original sheet 1, it is possible to prevent the adhesive from stringing. Therefore, it is preferable to arrange the separation member 61 so that the separation point is within 300 cm from the most downstream cutting position. In addition, it is more preferable to arrange the separation member 61 so that the separation point is within 300 cm from the most downstream cutting position. The cutting position is within 250cm. As shown in FIG. 10 , the cutting position on the most downstream side refers to the cut position located on the most downstream side (the downstream side refers to the downstream side in the conveyance direction of the original sheet 1 ) when the original sheet 1 is cut with the cutting blade 51 . break position. In FIG. 10 , symbol L1 indicates the distance from the cutting position on the most downstream side to the separation point. Furthermore, the time from when the original sheet 1 is cut to when the unnecessary portion 3 is pulled out can be obtained from the aforementioned distance L1 and the conveyance speed of the original sheet 1 .

＜累積部＞累積部E是收集藉由在前述去除部D中去除不需要部分3而製得之單片薄膜2。例如，在累積部E配置有容器71，且藉由第2輸送機皮帶44搬送之單片薄膜2會依序被容置到容器71內。已累積在容器71內之單片薄膜2可因應於需要來進行切斷及/或任意之適當的加工，藉此製得製品。＜Accumulation Department＞ The accumulation part E collects the individual films 2 produced by removing the unnecessary parts 3 in the aforementioned removal part D. For example, the container 71 is arranged in the accumulation part E, and the individual films 2 conveyed by the second conveyor belt 44 are sequentially accommodated in the container 71 . The single piece of film 2 accumulated in the container 71 can be cut and/or any appropriate processing is performed as needed, thereby producing a product.

[單片薄膜的製造方法] 本發明之單片薄膜2的製造方法，是將具有第1薄膜、黏著劑層與第2薄膜之長條帶狀的原片1朝長邊方向下游側搬送，並將前述原片1以區劃成複數個單片薄膜2、與殘留在前述各單片薄膜2的周圍之平面視角下呈網孔狀之不需要部分3的方式來切斷。在本發明中，特徵在於：在前述原片1的切斷之後，隨即將前述不需要部分3拉出並去除。 [Method for manufacturing monolithic film] The manufacturing method of the single film 2 of the present invention is to transport the long strip-shaped original film 1 including the first film, the adhesive layer and the second film toward the downstream side in the longitudinal direction, and divide the original film 1 into sections. The film is cut into a plurality of individual films 2 and an unnecessary portion 3 that remains in a mesh shape in a plan view around each individual film 2 is cut. The present invention is characterized in that after the original sheet 1 is cut, the unnecessary portion 3 is pulled out and removed.

如圖10所示，使位於原片1的上方之基座板52下降，而以切斷刀刃51將原片1切斷(參照圖11)。其次，如圖12所示，使基座板52上升，而將切斷刀刃51從原片1拔出。已被切斷刀刃51切斷之原片1會被區劃成複數個單片薄膜2、與平面視角下呈網孔狀之不需要部分3。藉由第1輸送機皮帶43將該已被區劃成單片薄膜2與不需要部分3之原片1朝下游側搬送，且在分離構件61中將不需要部分3拉出並去除。已拉出之不需要部分3會被捲取到回收輥62。不需要部分3的拉出是在原片1的切斷之後隨即進行。較佳的是例如，藉由上述＜切斷處理部＞的欄位之分離構件61的配置，將已被區劃成單片薄膜2與不需要部分3之原片1，搬送到距離最下游側的切斷位置300cm以內(較佳是250cm以內)以前，將不需要部分3拉出。不需要部分3的拉出和前述原片1的搬送同步而進行。從而，不需要部分3的拉出速度與原片1的搬送速度是相同的。例如，原片1的搬送速度為1m/分鐘以上，較佳為2m/分鐘以上。再者，原片1的搬送速度從防止黏著劑在切斷端面上再附著之觀點來看，雖然因為最好儘可能快速，所以不特別具有其上限，但可考慮生產線整體的處理來設定搬送速度的上限。 As shown in FIG. 10 , the base plate 52 located above the original sheet 1 is lowered, and the original sheet 1 is cut with the cutting blade 51 (see FIG. 11 ). Next, as shown in FIG. 12 , the base plate 52 is raised, and the cutting blade 51 is pulled out from the original sheet 1 . The original sheet 1 that has been cut by the cutting blade 51 will be divided into a plurality of individual films 2 and unnecessary portions 3 that are mesh-like in plan view. The original sheet 1 divided into the single film 2 and the unnecessary portion 3 is conveyed downstream by the first conveyor belt 43, and the unnecessary portion 3 is pulled out and removed by the separation member 61. The unnecessary portion 3 that has been pulled out will be taken up to the recovery roller 62 . The unnecessary portion 3 is pulled out immediately after the original piece 1 is cut. Preferably, for example, the original film 1 divided into the single film 2 and the unnecessary portion 3 is conveyed to the most downstream side by the arrangement of the separation member 61 of the column of the <cutting processing unit>. Pull out the unnecessary part 3 before the cutting position is within 300cm (preferably within 250cm). The pulling out of the unnecessary portion 3 is performed simultaneously with the transport of the original film 1 . Therefore, the pulling speed of the unnecessary portion 3 is the same as the conveying speed of the original sheet 1 . For example, the conveyance speed of the original film 1 is 1 m/min or more, preferably 2 m/min or more. Furthermore, from the viewpoint of preventing the adhesive from re-adhering to the cut end surface, the conveying speed of the original sheet 1 does not have an upper limit because it is best to be as fast as possible. However, the conveying speed can be set taking into account the processing of the entire production line. The upper limit of speed.

在如本實施形態地使用沖裁方式的切割器裝置的情況下，是將原片1搬送大致相當於可藉由切割器裝置的1次的下降來切斷之範圍的長度量。例如，在可藉由切割器裝置的1次的下降，而在橫帶3b(不需要部分3的一部分)之間形成2個單片薄膜2的情況下，會搬送大致相當於其等的長度量。如圖12所示，此1次的搬送長度L2等於：1個橫帶3b的搬送方向長度+1個單片薄膜2的搬送方向長度+1個橫帶3b的搬送方向長度+1個單片薄膜2的搬送方向長度。在進行前述1次的搬送長度量之原片1的搬送以及不需要部分3的拉出之後，若暫時停止原片1的搬送以及不需要部分3的拉出，會成為如圖10所示之狀態。事後，將圖11所示之切割器裝置的下降、圖12所示之切斷後的原片1的搬送以及不需要部分3的拉出去除、與搬送以及拉出之暫時停止作為1個循環來繼續重複。去除不需要部分3之後殘留之複數個單片薄膜2是藉由第2輸送機皮帶44來搬送至下游側。再者，第2輸送機皮帶44亦可和原片1的搬送同步來重複進行單片薄膜2的搬送與暫時停止、或者亦可在不停止的情形下連續地搬送單片薄膜2。 When a punching cutter device is used as in this embodiment, the original sheet 1 is conveyed by a length that is approximately equivalent to the range that can be cut by one descent of the cutter device. For example, in the case where two single sheets of film 2 can be formed between the horizontal belt 3b (part of the unnecessary portion 3) by one descent of the cutter device, a length approximately equal to the two pieces of film 2 will be conveyed. quantity. As shown in Figure 12, the conveying length L2 this time is equal to: the conveying direction length of one horizontal belt 3b + the conveying direction length of one single piece of film 2 + the conveying direction length of one horizontal belt 3b + one single piece The length of film 2 in the conveying direction. After carrying out the transport of the original film 1 and the pulling out of the unnecessary part 3 for one transport length, if the transport of the original film 1 and the pulling out of the unnecessary part 3 are temporarily stopped, the situation will be as shown in Fig. 10 condition. Afterwards, the lowering of the cutter device shown in Fig. 11, the transportation of the cut original sheet 1 shown in Fig. 12, the pulling out and removal of the unnecessary portion 3, and the temporary stop of the transportation and pulling out are regarded as one cycle. Keep repeating. The plurality of single sheets of film 2 remaining after removing the unnecessary portion 3 is conveyed to the downstream side by the second conveyor belt 44 . Furthermore, the second conveyor belt 44 may repeat the conveyance and temporary stop of the single film 2 in synchronization with the conveyance of the original film 1, or may continuously convey the single film 2 without stopping.

如本發明，藉由將原片1切斷之後隨即去除不需要部分3，可以防止黏著劑之拉絲。詳細而言，若將原片1切斷，而將原片1區劃成不需要部分3與單片薄膜2後，如圖13(a)所示，會成為不需要部分3的切斷端面3X與單片薄膜2之切斷端面2X相向之狀態。若以輸送機皮帶等搬送此狀態之原片1，黏著劑會因為裝置之振動等而膨出，而如同圖之(b)所示，會有不需要部分3的黏著劑層31的切斷端面31X與單片薄膜2的黏著劑層21的切斷端面21X附著之情形。若在如此黏著劑附著之狀態下拉出不需要部分3，則如同圖之(c)所示，黏著劑Y會像絲線一般地被拉伸(所謂的黏著劑之拉絲)。成為拉絲狀之黏著劑Y之後會被扯斷。形成為已被扯斷之絲線狀的黏著劑附著於單片薄膜2的正面或切斷端面、或是輸送機皮帶的表面等。尤其是，在由上述之柔軟的黏著劑所構成之黏著劑層中，易於產生黏著劑在切斷端面上的附著。 As in the present invention, by cutting the original sheet 1 and then removing the unnecessary portion 3, it is possible to prevent the adhesive from stringing. Specifically, if the original sheet 1 is cut and divided into the unnecessary portion 3 and the single film 2, as shown in Figure 13(a), the cut end surface 3X of the unnecessary portion 3 will become The state facing the cut end surface 2X of the single film 2. If the original sheet 1 in this state is transported by a conveyor belt, etc., the adhesive will bulge due to vibration of the device, etc., and as shown in (b) of the figure, the adhesive layer 31 of the unnecessary portion 3 will be cut off. The end surface 31X is attached to the cut end surface 21X of the adhesive layer 21 of the single film 2 . If the unnecessary portion 3 is pulled out while the adhesive is attached, the adhesive Y will be stretched like a thread (so-called adhesive drawing) as shown in (c) of the figure. The adhesive Y becomes stringy and will be torn off. The adhesive formed in the shape of a torn thread is attached to the front surface or cut end surface of the single film 2 or the surface of the conveyor belt. In particular, in the adhesive layer composed of the above-mentioned soft adhesive, the adhesive easily adheres to the cut end surface.

關於此點，如本發明，若於將原片1切斷後隨即去除不需要部分3，在不需要部分3的切斷端面與單片薄膜2的切斷端面上黏著劑便難以產生附著，而可以防止黏著劑之拉絲。亦即，本發明由於在黏著劑沒有在切斷端面上附著之期間(亦即在剛切斷後)即將不需要部分3拉出，因此可以防止黏著劑的拉絲。據此，根據本發明的方法，可以防止黏著劑附著於單片薄膜2或其周邊而弄髒之情形。In this regard, as in the present invention, if the unnecessary part 3 is removed immediately after cutting the original sheet 1, the adhesive will be difficult to adhere to the cut end surface of the unnecessary part 3 and the cut end surface of the single film 2, and It can prevent the adhesive from drawing. That is, in the present invention, since the unnecessary portion 3 is pulled out while the adhesive is not attached to the cut end surface (that is, immediately after cutting), stringing of the adhesive can be prevented. Accordingly, according to the method of the present invention, it is possible to prevent the adhesive from adhering to the single film 2 or its periphery and causing staining.

[變形例] 在上述實施形態之切斷處理部C中，雖然例示了沖裁方式的切割器裝置，但亦可如例如圖14所示，使用旋轉式的切割器裝置。在旋轉式的切割器裝置的情況下，原片1是在具有切斷刀刃54之旋轉模55的周面與原片1相接之處被切斷。因此，在使用旋轉式的切割器裝置的情況下，最下游側的切斷位置S2是在原片1和旋轉之旋轉模55的周面相接之接點。又，在旋轉式的切割器裝置的情況下，讓原片1不停止而以固定速度來搬送，且和此同步，將不需要部分3也以相同速度來拉出。 [Modification] In the cutting processing section C of the above embodiment, a punching type cutter device is exemplified, but a rotary cutter device may also be used as shown in FIG. 14 , for example. In the case of a rotary cutter device, the original sheet 1 is cut at a point where the peripheral surface of the rotary die 55 having the cutting blade 54 contacts the original sheet 1 . Therefore, when a rotary cutter device is used, the cutting position S2 on the most downstream side is a contact point between the original sheet 1 and the peripheral surface of the rotating rotary die 55 . In the case of a rotary cutter device, the original sheet 1 is conveyed at a fixed speed without stopping, and in synchronization with this, the unnecessary portion 3 is also pulled out at the same speed.

在上述實施形態中，雖然是將不需要部分3朝上方拉出而捲取之方式，但是亦可如例如圖15所示，將不需要部分3朝下方拉出，來捲取到回收輥62。在將不需要部分3朝下方拉出的情況下，也可以例如，如圖15所示地利用輸送機皮帶的周面來讓不需要部分3翻轉。 In the above embodiment, the unnecessary part 3 is pulled out upward and wound up. However, as shown in FIG. 15 , the unnecessary part 3 may be pulled out downward and wound up by the recovery roller 62 . . When the unnecessary part 3 is pulled out downward, for example, as shown in FIG. 15 , the unnecessary part 3 may be turned over using the peripheral surface of the conveyor belt.

1:原片 11:第1薄膜 11a,12a,13a,15a,151a,152a:端面 12:第2薄膜 13:第3薄膜 15,151,152,21,31:黏著劑層 2:單片薄膜 2X,3X,21X,31X:切斷端面 3:不需要部分 3a:縱帶 3b:橫帶 41:捲出部 42:導引輥 43:第1輸送機皮帶 44:第2輸送機皮帶 45:跨接板 51,54:切斷刀刃 51a:刀尖 52:基座板 53:承接台 55:旋轉模 61:分離構件 62:回收輥 63:導引輥 71:容器 A:製造裝置 B:搬送部 C:切斷處理部 D:去除部 E:累積部 IX:箭頭 L1:從最下游側的切斷位置至分離點為止之距離 L2:搬送長度 S1:分離點 S2:最下游側的切斷位置 X-X:線 Y:黏著劑 α:角度 1:Original film 11: 1st film 11a,12a,13a,15a,151a,152a: end face 12: 2nd film 13: 3rd film 15,151,152,21,31: Adhesive layer 2:Single film 2X, 3X, 21X, 31X: cut off end face 3: No part needed 3a: Longitudinal belt 3b: Horizontal belt 41: Roll-out part 42: Guide roller 43: 1st conveyor belt 44: 2nd conveyor belt 45:Jumper board 51,54: Cut off the blade 51a: tip 52: Base plate 53:Taking platform 55:Rotation mold 61: Separate components 62:Recycling roller 63: Guide roller 71:Container A: Manufacturing equipment B:Transportation Department C: Cutting processing department D:Removal part E: Accumulation Department IX: Arrow L1: Distance from the most downstream cutting position to the separation point L2: Transport length S1: separation point S2: Cutting position on the most downstream side X-X: line Y: Adhesive α: angle

圖1是原片的平面圖。圖2是單片薄膜的平面圖。圖3是顯示原片的其中1種層構成例的側面圖。圖4是顯示原片的其他的層構成例的側面圖。圖5是單片薄膜的製造裝置的概略平面圖。圖6是單片薄膜的製造裝置的概略側面圖。圖7是切斷刀刃的放大立體圖。圖8是區劃成單片薄膜與不需要部分之原片的平面圖。圖9是從圖6的箭頭IX方向觀看的放大正面圖。圖10是以圖5的X-X線切斷而成的放大剖面圖。圖11是顯示以切斷刀刃將原片切斷時之狀態的放大剖面圖。圖12是顯示從區劃成不需要部分與單片薄膜之原片將不需要部分去除時之狀態的放大剖面圖。圖13是說明產生黏著劑的拉絲之原理的參考圖。圖14是第1變形例的製造裝置的概略側面圖。圖15是第2變形例的製造裝置的概略側面圖。 Figure 1 is a plan view of the original film. Figure 2 is a plan view of a single film. FIG. 3 is a side view showing one example of the layer structure of the original film. FIG. 4 is a side view showing another example of the layer structure of the original film. FIG. 5 is a schematic plan view of a single film manufacturing apparatus. FIG. 6 is a schematic side view of a single film manufacturing apparatus. Fig. 7 is an enlarged perspective view of the cutting blade. Fig. 8 is a plan view of the original sheet divided into a single film and unnecessary parts. FIG. 9 is an enlarged front view viewed from the direction of arrow IX in FIG. 6 . FIG. 10 is an enlarged cross-sectional view taken along line X-X of FIG. 5 . FIG. 11 is an enlarged cross-sectional view showing a state when the original sheet is cut with a cutting blade. FIG. 12 is an enlarged cross-sectional view showing a state in which unnecessary parts are removed from the original sheet divided into unnecessary parts and individual films. FIG. 13 is a reference diagram illustrating the principle of wire drawing to generate adhesive. Fig. 14 is a schematic side view of the manufacturing apparatus according to the first modification example. Fig. 15 is a schematic side view of the manufacturing device according to the second modification example.

1:原片 1:Original film

2:單片薄膜 2:Single film

3:不需要部分 3: No part needed

3a:縱帶 3a: Longitudinal belt

3b:橫帶 3b: Horizontal belt

43:第1輸送機皮帶 43: 1st conveyor belt

51:切斷刀刃 51: Cut off the blade

52:基座板 52: Base plate

53:承接台 53:Taking platform

61:分離構件 61: Separate components

C:切斷處理部 C: Cutting processing department

D:去除部 D:Removal part

L2:搬送長度 L2: Transport length

Claims

一種單片薄膜的製造方法，是將具有第1薄膜、黏著劑層與第2薄膜之長條帶狀原片朝長邊方向下游側搬送，並以切斷刀刃切斷前述原片來製得複數個單片薄膜之方法，前述方法是進行以下步驟：將前述原片以區劃成複數個單片薄膜、與殘留在前述各單片薄膜的周圍之平面視角下為網孔狀之不需要部分的方式來切斷；在前述切斷之後，隨即將前述不需要部分拉出並去除。 A method for manufacturing a single film, which is produced by conveying a long strip-shaped original sheet having a first film, an adhesive layer, and a second film toward the downstream side in the longitudinal direction, and cutting the original sheet with a cutting blade. The method of multiple single films, The aforementioned method is to perform the following steps: Cutting the original sheet into a plurality of individual films and an unnecessary portion remaining in a mesh shape in a plan view around each of the individual films; After the aforementioned cutting, the aforementioned unnecessary portion is pulled out and removed.

如請求項1之單片薄膜的製造方法，其是在將已被區劃成前述複數個單片薄膜與不需要部分之原片，搬送到距離最下游側的切斷位置300cm以內之前，將前述不需要部分拉出並去除。The method of manufacturing a single-piece film according to claim 1, wherein the original film divided into the plurality of single-piece films and unnecessary parts is transported to within 300 cm from the cutting position on the most downstream side. No need to partially pull out and remove.

如請求項1或2之單片薄膜的製造方法，其中前述原片的第1薄膜包含偏光薄膜。The manufacturing method of a single film as claimed in claim 1 or 2, wherein the first film of the original film contains a polarizing film.