TWI753691B

TWI753691B - Punching device for optical film, and manufacturing method of film product

Info

Publication number: TWI753691B
Application number: TW109143196A
Authority: TW
Inventors: 宗本順二
Original assignee: 日商日東電工股份有限公司
Priority date: 2020-03-17
Filing date: 2020-12-08
Publication date: 2022-01-21
Also published as: CN113490580B; TW202136008A; JP6900534B1; WO2021157168A1; KR102341629B1; CN113490580A; JP2021146426A; KR20210117253A

Abstract

本發明係關於一種不易產生切斷不良之光學膜之沖壓裝置。該沖壓裝置係利用切斷刀(61)沖壓光學膜原片(1)而製造複數個薄膜製品之裝置。裝置包含：搬送部，其搬送刀支承片材(2)及上述光學膜原片(1)；及沖壓處理部，其將上述切斷刀(61)壓抵至上述光學膜原片(1)。上述刀支承片材(2)具有將片材之第1端面與第2端面對接而成之接縫(5)，上述接縫(5)沿相對於上述切斷刀(61)之延伸方向交叉之方向延伸。 The present invention relates to a punching device for an optical film that is less likely to produce poor cutting. The punching device utilizes a cutting knife (61) to punch an optical film original sheet (1) to manufacture a plurality of thin film products. The device includes: a conveying part that conveys a blade supporting sheet (2) and the above-mentioned optical film original sheet (1); and a punching part that presses the above-mentioned cutting blade (61) against the above-mentioned optical film original sheet (1) . The blade supporting sheet (2) has a seam (5) formed by contacting the first end face and the second end face of the sheet, and the seam (5) extends along the extension relative to the cutting blade (61). The direction extends in the direction of the cross.

Description

光學膜之沖壓裝置、及薄膜製品之製造方法Punching device for optical film, and manufacturing method of film product

本發明係關於一種藉由沖壓光學膜原片而製造薄膜製品的光學膜之沖壓裝置及薄膜製品之製造方法。The present invention relates to an optical film punching device and a manufacturing method of the thin film product by punching the original optical film sheet to manufacture the thin film product.

先前，光學膜已用於液晶顯示裝置或有機EL(Electroluminescence，電致發光)顯示裝置等圖像顯示裝置。作為上述光學膜，可列舉包含偏光元件之偏光膜、相位差膜、光擴散膜等。又，偏光膜等亦用於偏光太陽鏡、調光窗等圖像顯示裝置以外的用途。此種光學膜形成為與其畫面等匹配之特定俯視形狀以便組裝至上述圖像顯示裝置之畫面等。於本說明書中，將形成為特定形狀之光學膜稱為「薄膜製品」。薄膜製品例如藉由利用切斷刀沖壓光學膜原片(長條帶狀之光學膜或大尺寸之光學膜)而獲得。 Conventionally, optical films have been used in image display devices such as liquid crystal display devices and organic EL (Electroluminescence) display devices. As said optical film, the polarizing film containing a polarizing element, a retardation film, a light-diffusion film, etc. are mentioned. In addition, polarizing films and the like are also used in applications other than image display devices such as polarized sunglasses and light control windows. Such an optical film is formed into a specific plan view shape matching its screen and the like so as to be assembled to the screen or the like of the above-mentioned image display device. In this specification, the optical film formed into a specific shape is called "film product". The film product is obtained, for example, by punching an optical film original sheet (a long strip-shaped optical film or a large-sized optical film) with a cutting knife.

例如，於專利文獻1中揭示有一種加工方法，其係將襯紙片材與配置於上述襯紙上之被切斷片材搬送至支承台與切斷刀之間，並自上述被切斷片材之上方壓抵切斷刀，藉此，將被切斷片材切斷。於該沖壓加工中，藉由使切斷刀進入被切斷片材直至切斷刀之刀尖到達襯紙為止，可自被切斷片材連續地獲得特定形狀之複數個製品。上述加工方法中，將於上游側捲成捲筒狀之襯紙捲出，搬送至沖壓處理部並將切斷刀壓抵至被切斷片材之後，將其襯紙於下游側再次捲取成捲筒狀。因此，為了連續地製造製品，進行對上游側所剩無幾之襯紙接上新襯紙之襯紙之拼接處理。 [先前技術文獻] [專利文獻] For example, Patent Document 1 discloses a processing method in which an interleaving sheet and a sheet to be cut arranged on the interleaving paper are conveyed between a support table and a cutting blade, and the sheet is cut from the sheet to be cut. The upper part of the material is pressed against the cutting blade, thereby cutting the cut sheet. In this press working, by entering the cutting blade into the sheet to be cut until the cutting edge of the cutting blade reaches the backing paper, a plurality of products of a specific shape can be continuously obtained from the sheet to be cut. In the above-mentioned processing method, the liner rolled on the upstream side in a roll shape is unrolled, conveyed to the press processing section, and the cutting blade is pressed against the sheet to be cut, and then the liner is rewound on the downstream side. In roll shape. Therefore, in order to continuously manufacture a product, a splicing process of adding a new lining paper to the lining paper remaining on the upstream side is performed. [Prior Art Literature] [Patent Literature]

[專利文獻1]日本專利特開2011-115890號公報[Patent Document 1] Japanese Patent Laid-Open No. 2011-115890

然而，於自光學膜原片沖壓薄膜製品之情形時，若應用上述加工方法，則會產生如下問題。即，拼接處理後之襯紙(刀支承片材)具有將片材之第1端面與第2端面對接並接合而成之接縫。該接縫係片材間之間隙，因此，於該接縫處，不存在承受切斷刀之按壓力之襯紙。切斷刀正好與上述接縫上相吻合時，由於不存在承受切斷刀之按壓力之襯紙，故有無法將光學膜原片確實地切斷之虞。 [發明所欲解決之問題] However, in the case of punching a film product from an optical film original sheet, if the above-mentioned processing method is applied, the following problems will arise. That is, the backing paper (knife supporting sheet) after the splicing process has a seam formed by contacting and joining the first end surface and the second end surface of the sheet. The seam is the gap between the sheets, so at the seam, there is no backing paper that bears the pressing force of the cutting knife. When the cutting blade just fits on the above-mentioned seam, since there is no backing paper to receive the pressing force of the cutting blade, there is a possibility that the original optical film cannot be cut reliably. [Problems to be Solved by Invention]

本發明之目的在於提供一種不易產生切斷不良之光學膜之沖壓裝置及薄膜製品之製造方法。 [解決問題之技術手段] An object of the present invention is to provide a punching device for an optical film that is less likely to produce poor cutting, and a method for manufacturing a thin film product. [Technical means to solve problems]

如圖16所示，將片材之第1端面210與第2端面220對接進行拼接處理後之刀支承片材200係於上述第1端面210與第2端面220之間具有間隙(接縫500)。通常，藉由一面覆蓋該接縫500一面橫跨第1端部與第2端部而貼附拼接膠帶510，而將片材接合。於切斷刀610之延伸方向與接縫500平行之情形時，該接縫500與切斷刀610呈線狀重疊時(接縫500與切斷刀610平行，且整個切斷刀610與其平行之接縫500重疊時)，如圖16所示，切斷刀610整體進入接縫500。拼接膠帶510通常不具有承受切斷刀之按壓力之程度之強度。因此，有如下情形，即，光學膜原片之下方部隨著切斷刀610進入而略微伸長，從而無法確實地切斷光學膜原片100。本發明人等發現，藉由設計刀支承片材之接縫之形狀，以不讓整個切斷刀進入接縫，可抑制光學膜原片之切斷不良。 As shown in FIG. 16 , the knife supporting sheet 200 after the first end face 210 and the second end face 220 of the sheet are butted and spliced together is tied with a gap between the first end face 210 and the second end face 220 (the seam 500 ). Usually, the sheets are joined by attaching the splicing tape 510 across the first end portion and the second end portion while covering the seam 500 . When the extending direction of the cutting blade 610 is parallel to the seam 500, when the seam 500 and the cutting blade 610 are overlapped linearly (the seam 500 is parallel to the cutting blade 610, and the entire cutting blade 610 is parallel to it) When the seams 500 are overlapped), as shown in FIG. 16 , the cutting blade 610 enters the seam 500 as a whole. The splicing tape 510 generally does not have the strength to withstand the pressing force of a cutting knife. Therefore, the lower part of the optical film original sheet may be slightly elongated as the cutting blade 610 enters, and the optical film original sheet 100 may not be cut reliably. The inventors of the present invention have found that by designing the shape of the seam of the blade supporting sheet so that the entire cutting blade does not enter the seam, it is possible to suppress defective cutting of the optical film original sheet.

本發明之沖壓裝置係利用切斷刀沖壓光學膜原片而製造複數個薄膜製品之裝置，且包含：搬送部，其將支承上述切斷刀之刀尖之刀支承片材、及上述光學膜原片分別於長邊方向上搬送；及沖壓處理部，其將上述切斷刀自與上述刀支承片材相反之側壓抵至上述光學膜原片；上述刀支承片材具有將片材之第1端面與第2端面對接而成之接縫，且上述接縫沿相對於上述切斷刀之延伸方向交叉之方向延伸。The punching apparatus of the present invention is an apparatus for producing a plurality of thin film products by punching an optical film original sheet with a cutting blade, and includes a conveying section for holding the blade supporting sheet for supporting the cutting edge of the cutting blade, and the optical film The original sheets are conveyed in the longitudinal direction, respectively; and a press processing unit that presses the cutting blade against the optical film original sheet from the side opposite to the blade support sheet; A seam formed by contacting the first end face and the second end face, and the seam extends in a direction intersecting with the extending direction of the cutting blade.

本發明之較佳之沖壓裝置係上述刀支承片材之接縫相對於上述刀支承片材之與長邊方向正交之短邊方向傾斜地延伸。本發明之較佳之沖壓裝置係將拼接膠帶覆蓋上述接縫且橫跨上述片材之第1端部與第2端部而貼附於上述刀支承片材，且上述拼接膠帶之厚度為50 μm以下。 In a preferred punching device of the present invention, the seam of the knife support sheet extends obliquely with respect to the short side direction of the knife support sheet perpendicular to the longitudinal direction. In a preferred punching device of the present invention, a splicing tape covers the seam and is attached to the knife supporting sheet across the first end and the second end of the sheet, and the thickness of the splicing tape is 50 μm the following.

根據本發明之另一態樣，提供一種薄膜製品之製造方法。本發明之薄膜製品之製造方法係利用切斷刀沖壓光學膜原片而獲得複數個薄膜製品之方法，且包含如下步驟：將支承上述切斷刀之刀尖之刀支承片材、及上述光學膜原片分別於長邊方向上搬送；將上述切斷刀自與上述刀支承片材相反之側壓抵至上述光學膜原片，藉此，自上述光學膜原片沖壓出複數個薄膜製品；上述刀支承片材具有將片材之第1端面與第2端面對接而成之接縫，且上述刀支承片材之接縫沿相對於上述沖壓之薄膜製品之任一緣交叉之方向延伸。 According to another aspect of the present invention, a method for manufacturing a film product is provided. The manufacturing method of the film product of the present invention is a method for obtaining a plurality of film products by punching an optical film original sheet with a cutting knife, and comprises the following steps: a knife supporting sheet supporting the cutting edge of the cutting knife, and the optical film The original film sheet is respectively conveyed in the longitudinal direction; the above-mentioned cutting blade is pressed against the above-mentioned optical film original sheet from the side opposite to the above-mentioned blade supporting sheet, whereby a plurality of film products are punched out from the above-mentioned optical film original sheet; The above-mentioned knife supporting sheet has a seam formed by joining the first end face and the second end face of the sheet, and the seam of the above-mentioned knife supporting sheet is in a direction intersecting with either edge of the above-mentioned punched film product extend.

本發明之較佳之製造方法係上述刀支承片材之接縫相對於上述刀支承片材之與長邊方向正交之短邊方向傾斜地延伸。本發明之較佳之製造方法係上述薄膜製品呈俯視大致四邊形，該俯視大致四邊形具有與上述光學膜原片之長邊方向大致平行之縱邊及與上述光學膜原片之短邊方向大致平行之橫邊。本發明之較佳之製造方法係將拼接膠帶覆蓋上述接縫且橫跨上述片材之第1端部與第2端部而貼附於上述刀支承片材，且上述拼接膠帶之厚度為50 μm以下。本發明之較佳之製造方法係上述薄膜製品包含經由黏著劑層而積層之表面保護膜。本發明之較佳之製造方法係上述薄膜製品包含偏光元件。 [發明之效果] In the preferable manufacturing method of this invention, the seam of the said knife support sheet extends obliquely with respect to the short side direction orthogonal to the longitudinal direction of the said knife support sheet. In a preferred manufacturing method of the present invention, the film product is substantially quadrilateral in plan view, and the substantially quadrilateral in plan view has a longitudinal side substantially parallel to the longitudinal direction of the optical film original sheet and a longitudinal side substantially parallel to the short side direction of the optical film original sheet. horizontal edge. In a preferred manufacturing method of the present invention, a splicing tape covers the seam and is attached to the knife supporting sheet across the first end and the second end of the sheet, and the thickness of the splicing tape is 50 μm the following. In a preferred manufacturing method of the present invention, the above-mentioned film product includes a surface protective film laminated through an adhesive layer. A preferred manufacturing method of the present invention is that the above-mentioned film product includes a polarizing element. [Effect of invention]

根據本發明之沖壓裝置及製造方法，沖壓光學膜原片時不易產生切斷不良。因此，可自光學膜原片高效率地製造薄膜製品。According to the punching device and the manufacturing method of the present invention, it is difficult to produce poor cutting when punching the original optical film. Therefore, a thin film product can be efficiently manufactured from an optical film original sheet.

於本說明書中，「俯視」係指自相對於對象物之面鉛直之方向觀察，「俯視形狀」及「俯視圖」係指自相對於對象物之面鉛直之方向觀察時之對象物之形狀及圖式。又，於本說明書中，「大致」之表達係指包含本發明之技術領域中所容許之範圍。進而，於本說明書中，以「下限值X～上限值Y」表示之數值範圍係指下限值X以上且上限值Y以下。於上述數值範圍個別地記載有複數個之情形時，可選擇任意之下限值與任意之上限值而設定「任意之下限值～任意之上限值」。 In this specification, "top view" refers to the shape of the object when viewed from a direction perpendicular to the surface of the object, and "planar shape" and "plan view" refer to the shape of the object when viewed from a direction perpendicular to the surface of the object. Schema. In addition, in this specification, the expression "substantially" means the range permissible in the technical field including the present invention. Furthermore, in this specification, the numerical range represented by "the lower limit X to the upper limit Y" means the lower limit X or more and the upper limit Y or less. When a plurality of the above-mentioned numerical ranges are individually described, an arbitrary lower limit value and an arbitrary upper limit value can be selected, and "arbitrary lower limit value to arbitrary upper limit value" can be set.

[第1實施方式] ＜光學膜之沖壓裝置之概要＞圖1表示光學膜之沖壓裝置A1。參照圖1，沖壓裝置A1具有搬送光學膜原片1及刀支承片材2之搬送部B、沖壓處理部C、沖切殘邊去除部D、及製品回收部E。沖壓處理部C具有切斷刀。 [First Embodiment] <Outline of Pressing Equipment for Optical Films> Fig. 1 shows a punching apparatus A1 for an optical film. 1, the press apparatus A1 has the conveyance part B which conveys the optical film original sheet 1 and the knife support sheet 2, the press processing part C, the blanking removal part D, and the product collection part E. The press processing part C has a cutting blade.

＜搬送部＞沖壓裝置A1之搬送部B具有輸送光學膜原片1及刀支承片材2等之導輥31、及驅動裝置(未圖示)。上述搬送部B自捲出部321捲出光學膜原片1，並將該光學膜原片1於長邊方向上搬送。又，上述搬送部B自捲出部322捲出刀支承片材2，並將該刀支承片材2於長邊方向上搬送。再者，光學膜原片1之長邊方向與刀支承片材2之長邊方向係相同方向，光學膜原片1之短邊方向與刀支承片材2之短邊方向係相同方向。由上述搬送部B分別獨立地搬送之光學膜原片1與刀支承片材2係於中途重合，並以其重合狀態輸送至沖壓處理部C。例如，光學膜原片1重疊於刀支承片材2之正面上。重疊之光學膜原片1與刀支承片材2同步地搬送至沖壓處理部C。於搬送部B，視需要具備搬送已重合之光學膜原片1與刀支承片材2之帶式輸送機34。＜Conveying Department＞ The conveyance part B of the press apparatus A1 has the guide roller 31 which conveys the optical film original sheet 1, the knife support sheet 2, etc., and a drive apparatus (not shown). The said conveyance part B unwinds the optical film original sheet 1 from the unwinding part 321, and conveys this optical film original sheet 1 in the longitudinal direction. Moreover, the said conveyance part B unwinds the knife support sheet 2 from the unwinding part 322, and conveys this knife support sheet 2 in the longitudinal direction. In addition, the long-side direction of the optical film original sheet 1 and the long-side direction of the knife supporting sheet 2 are the same direction, and the short-side direction of the optical film original sheet 1 and the short-side direction of the knife supporting sheet 2 are the same direction. The optical film original sheet 1 and the blade support sheet 2 independently conveyed by the conveyance part B are overlapped in the middle, and are conveyed to the press processing part C in the overlapped state. For example, the optical film original sheet 1 is overlapped on the front surface of the blade supporting sheet 2 . The superposed optical film original sheet 1 is conveyed to the press processing part C in synchronization with the blade support sheet 2 . The conveyance part B is equipped with the belt conveyor 34 which conveys the optical film original sheet 1 and the knife support sheet 2 which were superimposed as needed.

已搬送至上述沖壓處理部C之光學膜原片1由切斷刀61沖壓之後，分割成沖切殘邊與薄膜製品。已搬送至上述沖壓處理部C之刀支承片材2承收切斷刀61之刀尖之後，朝下游側搬送並捲取至捲取部332。 After the optical film original sheet 1 conveyed to the above-mentioned press processing part C is punched by the cutting blade 61, it is divided into a punching stub and a film product. After the blade support sheet 2 conveyed to the above-mentioned press processing part C receives the cutting edge of the cutting blade 61 , it is conveyed to the downstream side and wound up by the winding part 332 .

＜光學膜原片＞本發明之沖壓裝置A1係沖壓光學膜原片1而獲得薄膜製品者。用以獲得薄膜製品之光學膜原片一般係長條帶狀之膜或大尺寸之膜。於圖示例中，表示使用長條帶狀之光學膜原片1沖壓薄膜製品之情形。但是，於圖2中，省略了長條帶狀之光學膜原片1之長邊方向一側。長條帶狀之光學膜原片1係以捲成捲筒狀之狀態設置於沖壓裝置A1之捲出部321。此處，於本說明書中，長條帶狀係指長邊方向之長度較短邊方向充分長之俯視大致長方形。光學膜原片1之長邊方向之長度例如為5 m以上，較佳為長邊方向之長度為10 m以上。再者，短邊方向係與長邊方向正交之方向。＜Original Optical Film＞ The punching device A1 of the present invention is a film product obtained by punching the optical film original sheet 1 . The original optical film used to obtain film products is generally a long strip-shaped film or a large-sized film. In the example shown in the figure, the case of punching a film product using a long strip-shaped optical film original sheet 1 is shown. However, in FIG. 2, one side in the longitudinal direction of the long strip-shaped optical film original sheet 1 is omitted. The long strip-shaped optical film original sheet 1 is installed in the unwinding part 321 of the punching device A1 in a state of being wound into a roll shape. Here, in this specification, the elongated strip|belt shape means the substantially rectangular shape in plan view whose length in the longitudinal direction is shorter than the length in the side direction. The length in the longitudinal direction of the optical film original sheet 1 is, for example, 5 m or more, or preferably 10 m or more in the longitudinal direction. In addition, the short-side direction is a direction orthogonal to the long-side direction.

光學膜原片1包含光學膜。光學膜原片1可僅由光學膜構成，亦可具有光學膜與光學膜以外之構成要素。圖3及圖4例示光學膜原片1之層構成。光學膜原片1具有光學膜11、隔離膜13、及介置於光學膜11與隔離膜13之間且將兩膜11、13貼合之黏著劑層12。黏著劑層12牢固地接著於光學膜11，且可剝離地接著於隔離膜13。隔離膜13可在與黏著劑層12之界面處剝離。再者，亦可使用不具有上述黏著劑層12及隔離膜13之光學膜原片(未圖示)。 The optical film original sheet 1 contains an optical film. The optical film original sheet 1 may be comprised only by an optical film, and may have components other than an optical film and an optical film. 3 and 4 illustrate the layer structure of the optical film original sheet 1 . The optical film original sheet 1 has an optical film 11 , an isolation film 13 , and an adhesive layer 12 interposed between the optical film 11 and the isolation film 13 and bonding the two films 11 and 13 . The adhesive layer 12 is firmly adhered to the optical film 11 and is releasably adhered to the release film 13 . The release film 13 can be peeled off at the interface with the adhesive layer 12 . Moreover, the optical film original sheet (not shown) which does not have the said adhesive bond layer 12 and the isolation|separation film 13 can also be used.

光學膜11包含光學功能膜。作為上述光學功能膜，可列舉偏光元件、相位差膜、光擴散膜、增亮膜、防眩膜、光反射膜等。偏光元件係具有使於特定之1個方向上振動之光(偏光)透過且將於除此以外之方向上振動之光遮斷之性質的膜。相位差膜係體現光學各向異性之膜，代表性地，例如可列舉丙烯酸系樹脂、環烯烴系樹脂、纖維素系樹脂等延伸膜等。又，光學膜11亦可包含保護膜。保護膜係為了保護上述光學功能膜而積層。典型而言，保護膜可使用無色透明膜。 The optical film 11 includes an optical functional film. As said optical function film, a polarizing element, a retardation film, a light-diffusion film, a brightness enhancement film, an antiglare film, a light reflection film, etc. are mentioned. The polarizer is a film having a property of transmitting light (polarized light) vibrating in one specific direction and blocking light vibrating in other directions. The retardation film is a film that expresses optical anisotropy, and typically, for example, stretched films such as acrylic resins, cycloolefin resins, and cellulose resins are exemplified. Moreover, the optical film 11 may contain a protective film. A protective film is laminated|stacked in order to protect the said optical function film. Typically, a colorless transparent film can be used as the protective film.

於圖3例示之光學膜原片1中，光學膜11自圖式之下方往上方依次具有第1保護膜111、偏光元件112及第2保護膜113。藉由上述各膜111至113相互接著而構成1個積層膜(光學膜11)。再者，於圖示例中，第1保護膜111與偏光元件112、及偏光元件112與第2保護膜113分別直接接著，但亦可視需要於該等膜之間介置接著劑層(或黏著劑層)且各膜經由接著劑層(或黏著劑層)而接著(未圖示)。又，於上述光學膜11之表面(第2保護膜113之表面)經由黏著劑層15而積層有表面保護膜14。表面保護膜14例如可隨著黏著劑層15一起自光學膜11之表面剝離。再者，表面保護膜14及黏著劑層15視需要而設置，因此，亦可使用不具有表面保護膜14及黏著劑層15之光學膜原片1。 In the optical film original sheet 1 illustrated in FIG. 3 , the optical film 11 has a first protective film 111 , a polarizing element 112 and a second protective film 113 in this order from the bottom to the top of the drawing. One laminated film (optical film 11 ) is formed by adhering the above-mentioned films 111 to 113 to each other. Furthermore, in the illustrated example, the first protective film 111 and the polarizing element 112, and the polarizing element 112 and the second protective film 113 are directly bonded, respectively, but an adhesive layer (or an adhesive layer) may also be interposed between these films as required. adhesive layer) and each film is adhered (not shown) via an adhesive layer (or adhesive layer). Moreover, the surface protective film 14 is laminated|stacked via the adhesive bond layer 15 on the surface of the said optical film 11 (the surface of the 2nd protective film 113). For example, the surface protective film 14 can be peeled off from the surface of the optical film 11 together with the adhesive layer 15 . In addition, the surface protection film 14 and the adhesive layer 15 are provided as needed, therefore, the optical film original sheet 1 which does not have the surface protection film 14 and the adhesive layer 15 can also be used.

於圖4例示之光學膜原片1中，光學膜11具有相位差膜115。又，於上述光學膜11之表面(相位差膜115之表面)經由黏著劑層17而積層有表面保護膜16。表面保護膜16例如可隨著黏著劑層17一起自光學膜11(相位差膜115)之表面剝離。再者，表面保護膜16及黏著劑層17視需要而設置，因此，亦可使用不具有表面保護膜16及黏著劑層17之光學膜原片1。再者，光學膜11不限於圖3及圖4之層構成，可進行各種變更。例如，光學膜可包含2層以上之光學功能膜，或者亦可僅由1層光學功能膜構成。 In the optical film original sheet 1 illustrated in FIG. 4 , the optical film 11 has a retardation film 115 . Moreover, the surface protective film 16 is laminated|stacked via the adhesive bond layer 17 on the surface of the said optical film 11 (surface of the retardation film 115). For example, the surface protective film 16 can be peeled off from the surface of the optical film 11 (retardation film 115 ) together with the adhesive layer 17 . In addition, the surface protective film 16 and the adhesive layer 17 are provided as needed, therefore, the optical film original sheet 1 without the surface protective film 16 and the adhesive layer 17 can also be used. In addition, the optical film 11 is not limited to the layer structure of FIG. 3 and FIG. 4, Various changes are possible. For example, the optical film may include two or more layers of optically functional films, or may consist of only one layer of optically functional films.

設置於上述光學膜11之黏著劑層12、15、17於常溫下具有黏著性，且於剝離後黏著性亦持續而可再次貼附。黏著劑層12、15、17由公知之黏著劑構成。作為上述黏著劑，可列舉無色透明之丙烯酸系黏著劑、橡膠系黏著劑、矽酮系黏著劑、胺基甲酸酯系黏著劑、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。上述黏著劑層12、15、17之厚度並無特別限定，例如為0.1 μm～50 μm，較佳為1 μm～30 μm。 The adhesive layers 12 , 15 , and 17 provided on the optical film 11 have adhesiveness at normal temperature, and the adhesiveness continues even after peeling, so that they can be attached again. The adhesive layers 12, 15, and 17 are made of known adhesives. Examples of the above-mentioned adhesive include colorless and transparent acrylic adhesives, rubber-based adhesives, silicone-based adhesives, urethane-based adhesives, vinyl alkyl ether-based adhesives, and polyvinylpyrrolidone-based adhesives. Adhesives, polyacrylamide-based adhesives, cellulose-based adhesives, etc. The thickness of the above-mentioned adhesive layers 12 , 15 and 17 is not particularly limited, but is, for example, 0.1 μm to 50 μm, preferably 1 μm to 30 μm.

隔離膜13並無特別限定，通常可使用不包含光學功能膜之膜。隔離膜13具有相對於上述黏著劑層12而言剝離性優異之離型面。作為隔離膜13，例如可列舉聚乙烯、聚丙烯、聚對苯二甲酸乙二酯、聚酯膜等樹脂膜；紙；織布、不織布、網布等多孔質膜；發泡樹脂膜等。由於表面平滑性優異，故隔離膜13宜作為樹脂膜。作為上述樹脂膜，例如可列舉聚對苯二甲酸乙二酯膜、聚對苯二甲酸丁二酯膜、聚乙烯膜、聚丙烯膜、聚丁烯膜、聚丁二烯膜、聚甲基戊烯膜、聚氯乙烯膜、氯乙烯共聚物膜、聚氨酯膜、乙烯-乙酸乙烯酯共聚物膜等。上述隔離膜13之厚度並無特別限定，例如為5 μm～200 μm，較佳為10 μm～100 μm。 The separator 13 is not particularly limited, and a film that does not contain an optical functional film can usually be used. The separator 13 has a release surface excellent in releasability with respect to the above-described adhesive layer 12 . Examples of the separator 13 include resin films such as polyethylene, polypropylene, polyethylene terephthalate, and polyester films; paper; porous films such as woven, non-woven, and mesh; foamed resin films, and the like. Since the surface smoothness is excellent, the release film 13 is preferably used as a resin film. As said resin film, polyethylene terephthalate film, polybutylene terephthalate film, polyethylene film, polypropylene film, polybutene film, polybutadiene film, polymethyl Pentene film, polyvinyl chloride film, vinyl chloride copolymer film, polyurethane film, ethylene-vinyl acetate copolymer film, etc. The thickness of the isolation film 13 is not particularly limited, but is, for example, 5 μm to 200 μm, preferably 10 μm to 100 μm.

＜刀支承片材＞刀支承片材2係支承切斷刀61之刀尖之片材。藉由貫通光學膜原片1且露出至光學膜原片1之背面側之切斷刀61之刀尖咬入至刀支承片材2，而確實地切斷上述光學膜原片且可防止上述切斷刀61之刀尖劣化。作為刀支承片材2，可使用如下片材，其具有能夠承收上述切斷刀61之刀尖之柔軟性，進而具有即便上述刀尖進入亦不斷裂之程度之強度及厚度。例如，作為刀支承片材2，可使用合成樹脂製片材、橡膠製片材、不織布等，特佳為合成樹脂製片材。作為上述合成樹脂片材，可列舉聚苯乙烯等苯乙烯系樹脂片材；聚乙烯或聚丙烯等聚烯烴系樹脂片材；聚對苯二甲酸乙二酯等聚酯系樹脂片材；66尼龍等聚醯胺系樹脂片材；聚氯乙烯等聚氯乙烯系樹脂片材等。又，亦可使用將2種以上之樹脂片材積層而成之積層片材。刀支承片材2之厚度並無特別限定。若刀支承片材2之厚度過小則有容易因切斷刀61而斷裂之虞，因此，刀支承片材2之厚度較佳為超過切斷刀61之刀尖之進入量。就上述觀點而言，刀支承片材2之厚度例如為0.4 mm以上，較佳為0.5 mm以上。又，若刀支承片材2之厚度過大則難以操作，而且材料成本亦提高。就上述觀點而言，刀支承片材2之厚度例如為2 mm以下，較佳為1 mm以下，更佳為0.8 mm以下。 <Knife Support Sheet> The blade supporting sheet 2 is a sheet supporting the cutting edge of the cutting blade 61 . The cutting edge of the cutting blade 61 which penetrates through the optical film original sheet 1 and is exposed to the back side of the optical film original sheet 1 bites into the blade supporting sheet 2, thereby reliably cutting the optical film original sheet and preventing the above-mentioned optical film original sheet. The cutting edge of the cutting blade 61 is deteriorated. As the blade supporting sheet 2, there can be used a sheet having flexibility to receive the cutting edge of the cutting blade 61, and having strength and thickness such that the cutting edge does not break even if the cutting edge enters. For example, as the blade supporting sheet 2, a synthetic resin sheet, a rubber sheet, a nonwoven fabric, etc. can be used, and a synthetic resin sheet is particularly preferable. Examples of the synthetic resin sheet include styrene-based resin sheets such as polystyrene; polyolefin-based resin sheets such as polyethylene and polypropylene; polyester-based resin sheets such as polyethylene terephthalate; 66 Polyamide resin sheets such as nylon; polyvinyl chloride resin sheets such as polyvinyl chloride, etc. Moreover, the laminated sheet which laminated|stacked 2 or more types of resin sheets can also be used. The thickness of the blade support sheet 2 is not particularly limited. If the thickness of the blade support sheet 2 is too small, the cutting blade 61 may be easily broken. Therefore, the thickness of the blade support sheet 2 is preferably larger than the amount of entry of the cutting blade 61 . From the above viewpoint, the thickness of the blade support sheet 2 is, for example, 0.4 mm or more, or preferably 0.5 mm or more. Moreover, if the thickness of the blade support sheet 2 is too large, it becomes difficult to handle, and the material cost also increases. From the above viewpoint, the thickness of the blade support sheet 2 is, for example, 2 mm or less, preferably 1 mm or less, and more preferably 0.8 mm or less.

本實施方式之刀支承片材2如圖5所示呈長條帶狀。但是，於圖5中，省略了長條帶狀之刀支承片材2之長邊方向兩側(圖7亦同樣)。刀支承片材2以捲成捲筒狀之狀態設置於沖壓裝置A1之捲出部322。刀支承片材2具有將片材之第1端面21與第2端面22對接而成之接縫5。本發明之特徵在於，刀支承片材2之接縫5沿相對於切斷刀61之延伸方向交叉之方向延伸。如下所述，利用切斷刀61沖壓光學膜原片1時，形成具有與切斷刀61之俯視形狀相同形狀之緣之薄膜製品。因此，就與薄膜製品之關係而言，亦可認為上述刀支承片材2之接縫5沿相對於薄膜製品之任一緣交叉之方向延伸。刀支承片材2之接縫5係面對面之第1端面21與第2端面22之間之間隙。上述接縫5係自刀支承片材2之短邊方向一側之緣沿相對於切斷刀61之延伸方向交叉之方向延伸，並且向刀支承片材2之短邊方向相反側之緣延伸。 As shown in FIG. 5, the knife support sheet 2 of this embodiment has a long strip shape. However, in FIG. 5, both sides of the longitudinal direction of the long-belt-shaped blade support sheet 2 are omitted (the same is true in FIG. 7). The blade support sheet 2 is installed in the unwinding part 322 of the punching device A1 in a state of being wound in a roll shape. The blade support sheet 2 has a joint 5 formed by butting the first end face 21 and the second end face 22 of the sheet. The present invention is characterized in that the seam 5 of the blade supporting sheet 2 extends in a direction intersecting with the extending direction of the cutting blade 61 . When the optical film original sheet 1 is punched by the cutting blade 61 as described below, a film product having an edge having the same shape as the plan view shape of the cutting blade 61 is formed. Therefore, in relation to the film product, the seam 5 of the above-mentioned knife support sheet 2 can also be considered to extend in a direction that intersects with either edge of the film product. The seam 5 of the knife support sheet 2 is the gap between the first end face 21 and the second end face 22 which face each other. The above-mentioned seam 5 extends from the edge on one side in the short-side direction of the knife supporting sheet 2 in a direction intersecting with the extending direction of the cutting blade 61, and extends to the edge on the opposite side in the short-side direction of the knife supporting sheet 2. .

具體而言，於本實施方式中，刀支承片材2係將至少2個片材之端面21、22彼此對接且使用拼接膠帶51將上述2個片材接合所得者。此種接合方式稱為對頭拼接。圖7係表示貼附拼接膠帶51之前之刀支承片材2之俯視圖。第1片材之第1端面21於俯視下形成為相對於短邊方向(短邊方向係與長邊方向正交之方向)傾斜之直線狀。因此，第1片材之第1端面21於俯視下相對於短邊方向以特定角度傾斜並且沿短邊方向延伸。第2片材之第2端面22以與上述第1端面21大致平行之方式，於俯視下形成為相對於短邊方向傾斜之直線狀。因此，第1端面21與第2端面22之間之接縫5於俯視下呈相對於短邊方向傾斜之直線狀延伸。接縫5相對於短邊方向之角度α並無特別限定。例如，接縫5之角度α相對於短邊方向設為5度～30度，較佳為設為10度～20度。接縫5之寬度5W(第1端面21與第2端面22之間隔)並無特別限定，例如為0.5 mm～3 mm，較佳為0.7 mm～2 mm。再者，接縫5之寬度於短邊方向上可均等，或者亦可不均等。接縫5不均等之情形時之上述接縫5之寬度5W採用其最大值。 Specifically, in this embodiment, the blade support sheet 2 is obtained by joining the end surfaces 21 and 22 of at least two sheets to each other and joining the two sheets using the splicing tape 51 . This joint method is called butt joint. FIG. 7 is a plan view showing the knife support sheet 2 before the splicing tape 51 is attached. The first end surface 21 of the first sheet is formed in a linear shape inclined with respect to the short-side direction (the short-side direction is a direction orthogonal to the long-side direction) in plan view. Therefore, the first end surface 21 of the first sheet is inclined at a predetermined angle with respect to the short-side direction in a plan view, and extends in the short-side direction. The second end surface 22 of the second sheet is formed in a linear shape inclined with respect to the short-side direction in a plan view so as to be substantially parallel to the first end surface 21 described above. Therefore, the joint 5 between the first end surface 21 and the second end surface 22 extends in a straight line inclined with respect to the short-side direction in a plan view. The angle α of the seam 5 with respect to the short-side direction is not particularly limited. For example, the angle α of the seam 5 is 5 degrees to 30 degrees with respect to the short-side direction, and preferably 10 degrees to 20 degrees. The width 5W of the seam 5 (the interval between the first end face 21 and the second end face 22 ) is not particularly limited, and is, for example, 0.5 mm to 3 mm, preferably 0.7 mm to 2 mm. In addition, the width of the seam 5 may be uniform or non-uniform in the short-side direction. When the seam 5 is not equal, the width 5W of the seam 5 is the maximum value.

如圖7所示，將片材之第1端面21與第2端面22對接之後，一面覆蓋接縫5一面橫跨該片材之第1端部21a與第2端部22a而貼附拼接膠帶51，藉此，構成如圖5及圖6所示之長條帶狀之刀支承片材2。拼接膠帶51具有基材與接著劑或黏著劑，經由接著劑或黏著劑而貼附於刀支承片材2。再者，接著劑或黏著劑並未圖示。拼接膠帶51可僅於刀支承片材2之正面或背面之任一者橫跨第1端部21a與第2端部22a而貼附。為了將接縫5確實地接合，較佳為如圖6所示，拼接膠帶51、51分別覆蓋接縫5且橫跨第1端部21a與第2端部22a而貼附於刀支承片材2之正面及背面該兩面。 As shown in FIG. 7 , after the first end face 21 and the second end face 22 of the sheet are butted together, a splicing tape is attached across the first end 21 a and the second end 22 a of the sheet while covering the seam 5 51. Thereby, the long strip-shaped knife supporting sheet 2 as shown in FIG. 5 and FIG. 6 is constructed. The splicing tape 51 has a base material and an adhesive or an adhesive, and is attached to the blade support sheet 2 via the adhesive or the adhesive. Furthermore, the adhesive or the adhesive is not shown. The splicing tape 51 can be attached across the first end 21a and the second end 22a only on either the front or the back of the blade support sheet 2 . In order to surely join the seam 5, as shown in FIG. 6, it is preferable that the splicing tapes 51 and 51 cover the seam 5, respectively, and are attached to the knife supporting sheet across the first end 21a and the second end 22a. 2 the front and back of the two sides.

如圖5所示，拼接膠帶51配合接縫5之傾斜，於俯視下相對於短邊方向成特定角度而貼附。拼接膠帶51之基材並無特別限定，例如可列舉合成樹脂製片材、紙、合成紙、不織布及其等之積層片材等。拼接膠帶51之寬度51W並無特別限定，例如為10 mm～30 mm。拼接膠帶51之厚度51T並無特別限定。若厚度過大，則有產生於沖壓時薄膜製品破裂等不良情況之虞，因此，拼接膠帶51之厚度較佳為儘可能地小。就上述觀點而言，拼接膠帶51之厚度例如為50 μm以下，較佳為40 μm以下，更佳為30 μm以下。另一方面，若厚度過小，則有拼接膠帶51容易斷裂之虞。就上述觀點而言，拼接膠帶51之厚度51T例如為10 μm以上，較佳為15 μm以上。其中，上述拼接膠帶51之厚度51T包含接著劑或黏著劑之厚度。 As shown in FIG. 5 , the splicing tape 51 matches the inclination of the seam 5 and is attached at a specific angle with respect to the short side direction in a plan view. The base material of the splicing tape 51 is not particularly limited, and examples thereof include synthetic resin sheets, paper, synthetic paper, non-woven fabrics, and laminated sheets thereof. The width 51W of the splicing tape 51 is not particularly limited, and is, for example, 10 mm to 30 mm. The thickness 51T of the splicing tape 51 is not particularly limited. If the thickness is too large, there is a possibility of failures such as cracking of the film product during punching. Therefore, the thickness of the splicing tape 51 is preferably as small as possible. From the above viewpoint, the thickness of the splicing tape 51 is, for example, 50 μm or less, preferably 40 μm or less, and more preferably 30 μm or less. On the other hand, if the thickness is too small, the splicing tape 51 may be easily broken. From the above viewpoint, the thickness 51T of the splicing tape 51 is, for example, 10 μm or more, or preferably 15 μm or more. Wherein, the thickness 51T of the above-mentioned splicing tape 51 includes the thickness of the adhesive or the adhesive.

＜沖壓處理部＞參照圖1，沖壓處理部C具有切割器裝置6。切割器裝置6具有切斷刀61與基底板62。又，與切斷刀61對向地設置有支承台63。支承台63例如使用強度優異之鋼板等。上述支承台63固定於沖壓裝置A1之框架等。上述支承台63配置於刀支承片材2之背面側。如圖示例般，配置有搬送光學膜原片1與刀支承片材2之帶式輸送機34之情形時，支承台63配置於帶式輸送機34之內側。於該情形時，自圖1之紙面下側朝向上側依次配置支承台63、帶式輸送機34之輸送帶、刀支承片材2、光學膜原片1、切斷刀61。再者，支承台63亦可配置於帶式輸送機34之外側(正面側)。 <Press processing section> Referring to FIG. 1 , the press processing unit C has a cutter device 6 . The cutter device 6 has a cutting blade 61 and a base plate 62 . Moreover, the support stand 63 is provided so that the cutting blade 61 may be opposed. As the support base 63, for example, a steel plate having excellent strength is used. The said support stand 63 is being fixed to the frame etc. of the press apparatus A1. The said support stand 63 is arrange|positioned at the back surface side of the blade support sheet 2. As shown in FIG. When the belt conveyor 34 which conveys the optical film original sheet 1 and the knife support sheet 2 is arrange|positioned like the illustration example, the support stand 63 is arrange|positioned inside the belt conveyor 34. In this case, the support table 63 , the conveyor belt of the belt conveyor 34 , the blade support sheet 2 , the optical film original 1 , and the cutting blade 61 are arranged in this order from the lower side toward the upper side of the paper surface of FIG. 1 . In addition, the support stand 63 may be arrange|positioned on the outer side (front side) of the belt conveyor 34.

上述切斷刀61設置於基底板62。基底板62呈平坦狀，於該基底板62固定地設置有切斷刀61。切割器裝置6(切斷刀61)藉由未圖示之驅動裝置，沿相對於光學膜原片1之表面鉛直之方向前進且退出。本實施方式之切割器裝置6係藉由沿相對於光學膜原片1之表面鉛直之方向出退而沖壓光學膜原片1之按壓方式之切割器。於圖1中，以粗箭頭表示切割器裝置6之移動。作為此種切割器裝置6，代表性地，可使用湯姆遜刀。 The above-mentioned cutting blade 61 is provided on the base plate 62 . The base plate 62 has a flat shape, and the cutting blade 61 is fixedly provided on the base plate 62 . The cutter device 6 (cutting blade 61 ) is advanced and retracted in a direction perpendicular to the surface of the optical film original sheet 1 by a driving device not shown. The cutter device 6 of the present embodiment is a cutter of a pressing method for punching the optical film original sheet 1 by withdrawing and retracting in a direction perpendicular to the surface of the optical film original sheet 1 . In FIG. 1, the movement of the cutter device 6 is indicated by thick arrows. As such a cutter device 6, a Thomson knife can be used typically.

圖8係包含切斷刀61之切割器裝置6之俯視圖(圖8係自紙面下側觀察圖1之切割器裝置6所得之圖)。圖9係其放大立體圖。於圖9中省略了一部分。又，於圖9中，同時記載局部示出切斷刀61之立體形狀之放大圖。於圖8及圖9中，於切割器裝置6之基底板62之表面突出設置有切斷刀61。一般地，為了藉由1次按壓同時沖壓複數個薄膜製品，而於1個基底板62設置有複數個切斷刀61。上述切斷刀61於俯視下呈無端環狀。複數個切斷刀61係隔開固定間隔地設置於基底板62。 FIG. 8 is a plan view of the cutter device 6 including the cutting blade 61 ( FIG. 8 is a view of the cutter device 6 of FIG. 1 viewed from the lower side of the paper). FIG. 9 is an enlarged perspective view thereof. A part is omitted in FIG. 9 . In addition, in FIG. 9, the enlarged view which partially shows the three-dimensional shape of the cutting blade 61 is also described. In FIGS. 8 and 9 , a cutting blade 61 is protruded from the surface of the base plate 62 of the cutter device 6 . Generally, a plurality of cutting blades 61 are provided on one base plate 62 in order to simultaneously punch a plurality of film products by one pressing. The cutting blade 61 has an endless ring shape in plan view. The plurality of cutting blades 61 are provided on the base plate 62 at fixed intervals.

切斷刀61如圖9之放大圖所示，通常刀尖61a尖銳，隨著朝向基底板62側而厚度變厚。刀尖61a之角度β並無特別限定，例如為20度～40度。切割器裝置6之切斷刀61係以相對於上述刀支承片材2之接縫5交叉之方式配置。又，切斷刀61係相對於上述刀支承片材2之接縫5之延伸方向不平行地(相對於接縫5之延伸方向不平行地)配置。例如，各切斷刀61具有與刀支承片材2之短邊方向大致平行地延伸之第1部分611、及與刀支承片材2之長邊方向大致平行地延伸之第2部分612。上述切斷刀61之第1部分611與第2部分612均沿相對於接縫5之延伸方向交叉之方向延伸。各切斷刀61之俯視形狀例如如圖8所示，呈大致四邊形(大致長方形或大致正方形)。 As shown in the enlarged view of FIG. 9 , the cutting blade 61 usually has a sharp blade edge 61a and becomes thicker toward the base plate 62 side. The angle β of the blade edge 61a is not particularly limited, but is, for example, 20 degrees to 40 degrees. The cutting blade 61 of the cutter device 6 is arranged so as to intersect with the seam 5 of the above-mentioned blade supporting sheet 2 . Moreover, the cutting blade 61 is arrange|positioned not parallel with respect to the extending direction of the seam 5 of the said blade support sheet 2 (non-parallel with respect to the extending direction of the seam 5). For example, each cutting blade 61 has a first portion 611 extending substantially parallel to the short side direction of the blade support sheet 2 and a second portion 612 extending substantially parallel to the longitudinal direction of the blade support sheet 2 . Both the first portion 611 and the second portion 612 of the cutting blade 61 extend in a direction intersecting with the extending direction of the seam 5 . The plan view shape of each cutting blade 61 is, for example, as shown in FIG. 8 , which is a substantially quadrangle (substantially rectangular or substantially square).

如上所述，以刀支承片材2與光學膜原片1之背面重疊之狀態搬送至沖壓處理部C。於沖壓處理部C，將切割器裝置6之切斷刀61自光學膜原片1之正面側壓抵至光學膜原片1。再者，上述光學膜原片1之正面側係光學膜原片1之兩面中與重疊之刀支承片材2為相反側之面。藉由將切斷刀61壓抵至光學膜原片1，而於光學膜原片1之面內產生與切斷刀61之俯視形狀相同形狀之切斷線。由該切斷線包圍之部分係薄膜製品。 As mentioned above, it conveys to the press processing part C in the state which the knife support sheet 2 overlaps with the back surface of the optical film original sheet 1. In the press processing part C, the cutting blade 61 of the cutter device 6 is pressed against the optical film original sheet 1 from the front side of the optical film original sheet 1 . In addition, the front side of the said optical film original sheet 1 is the surface on the opposite side to the knife support sheet 2 which overlaps with the both surfaces of the optical film original sheet 1. By pressing the cutting blade 61 against the optical film original sheet 1 , a cutting line having the same shape as the plan view shape of the cutting blade 61 is generated in the surface of the optical film original sheet 1 . The portion surrounded by the cut line is a film product.

＜沖切殘邊去除部＞沖切殘邊去除部D將由沖壓處理部C形成於光學膜原片1之面內之薄膜製品(由切斷線包圍之部分)之周圍所殘存的沖切殘邊去除。沖切殘邊去除部D具有：按壓輥71，其按壓經上述切斷刀61沖壓之光學膜原片1；及回收輥72，其將以上述按壓輥71為支點反轉後之沖切殘邊回收。沖壓後之光學膜原片1由帶式輸送機35朝下游側搬送，於按壓輥71處分離成沖切殘邊91與薄膜製品9。沖切殘邊91由回收輥72回收。薄膜製品9由帶式輸送機36朝下游側搬送。 <Punching stub removal part> The punching edge removal part D removes the remaining punching edge around the film product (the part surrounded by the cutting line) formed in the surface of the optical film original sheet 1 by the punching part C. The punching residue removing section D includes a pressing roller 71 that presses the optical film original sheet 1 punched by the cutting blade 61 and a recovery roller 72 that reverses the punching residue after the pressing roller 71 is used as a fulcrum. side recycling. The punched optical film original sheet 1 is conveyed downstream by the belt conveyor 35 , and is separated into the punching stub 91 and the film product 9 at the pressing roller 71 . The die cut stub 91 is recovered by the recovery roller 72 . The film product 9 is conveyed downstream by the belt conveyor 36 .

＜製品回收部＞製品回收部E具有回收部37，該回收部37將藉由在上述沖切殘邊去除部D去除沖切殘邊91所獲得之薄膜製品9回收。＜Product Recycling Department＞ The product recovery section E has a recovery section 37 that recovers the film product 9 obtained by removing the punching stubs 91 in the above-described punching stub removal section D. As shown in FIG.

[使用沖壓裝置之薄膜製品之製造方法] 圖10之S1至S4所示之各俯視圖係自圖1之中空箭頭S1至S4之方向觀察時之俯視圖(其中，省略了長邊方向兩側)。參照圖1及圖10之S1，利用搬送部B，將光學膜原片1及刀支承片材2朝長邊方向下游側搬送(搬送步驟)。再者，圖1之細箭頭表示光學膜原片1等之搬送方向。參照圖1及圖10之S2，於搬送中途，將光學膜原片1重合於刀支承片材2之表面上，以該狀態向沖壓處理部C搬送。 [Manufacturing method of film product using punching device] The plan views shown in S1 to S4 of FIG. 10 are plan views when viewed from the directions of the hollow arrows S1 to S4 in FIG. 1 (both sides in the longitudinal direction are omitted). 1 and S1 of FIG. 10, by the conveyance part B, the optical film original sheet 1 and the blade support sheet 2 are conveyed to the longitudinal direction downstream side (a conveyance process). In addition, the thin arrow of FIG. 1 shows the conveyance direction of the optical film original sheet 1 etc.. FIG. 1 and S2 of FIG. 10, in the middle of conveyance, the optical film original sheet 1 is superimposed on the surface of the blade support sheet 2, and is conveyed to the press processing part C in this state.

於沖壓處理部C，將切割器裝置6之切斷刀61自與刀支承片材2相反之側(正面側)壓抵至上述光學膜原片1(沖壓步驟)。藉由切斷刀61沿光學膜原片1之厚度方向進入直至切斷刀61之刀尖61a到達刀支承片材2為止，可將光學膜原片1沖壓成與切斷刀61之俯視形狀相同之形狀。已通過沖壓處理部C之刀支承片材2捲取至捲取部332。 In the press processing part C, the cutting blade 61 of the cutter device 6 is pressed against the above-mentioned optical film original sheet 1 from the side (front side) opposite to the blade support sheet 2 (pressing step). By entering the cutting blade 61 in the thickness direction of the optical film original sheet 1 until the cutting edge 61a of the cutting blade 61 reaches the blade supporting sheet 2, the optical film original sheet 1 can be punched into the top view shape of the cutting blade 61. the same shape. The blade support sheet 2 that has passed through the press processing section C is wound up to the winding section 332 .

參照圖10之S3，符號X表示利用切斷刀61形成於光學膜原片1之面內之切斷線，又，附加有無數個點之部分表示沖切殘邊91。沖壓後之光學膜原片1由帶式輸送機35朝下游側搬送。於沖切殘邊去除部D，使沖壓後之光學膜原片1中之沖切殘邊91於按壓輥71處反轉而將其回收至回收輥72(去除步驟)。以此方式，可連續地製造如圖1及圖10之S4所示之薄膜製品9。所獲得之薄膜製品9之任一緣均沿相對於刀支承片材2之接縫5交叉之方向延伸。換言之，刀支承片材2之接縫5沿相對於沖壓之薄膜製品9之任一緣交叉之方向延伸。再者，薄膜製品9之緣之形狀與上述切斷線X相同。 Referring to S3 of FIG. 10 , the symbol X represents the cutting line formed in the surface of the optical film original sheet 1 by the cutting blade 61 , and the portion to which an infinite number of dots are added represents the blanking 91 . The optical film original sheet 1 after punching is conveyed by the belt conveyor 35 toward the downstream side. In the punching stub removal part D, the punching stub 91 in the optical film original sheet 1 after punching is reversed at the pressing roller 71 and recovered to the recovery roller 72 (removal step). In this way, the film product 9 shown in Fig. 1 and S4 of Fig. 10 can be continuously produced. Either edge of the film product 9 obtained extends in a direction that intersects with the seam 5 of the knife support sheet 2 . In other words, the seam 5 of the knife support sheet 2 extends in a direction that intersects with either edge of the punched film product 9 . In addition, the shape of the edge of the film product 9 is the same as that of the cutting line X described above.

例如，薄膜製品9具有與光學膜原片1(刀支承片材2)之長邊方向大致平行地延伸之緣、及與光學膜原片1(刀支承片材2)之短邊方向大致平行地延伸之緣。於圖示例中，薄膜製品9呈具有與上述光學膜原片1之長邊方向大致平行之縱邊9a及與上述光學膜原片1之短邊方向大致平行之橫邊9b的俯視大致四邊形。再者，於圖示例中，表示製造於短邊方向上為5個(5行)之薄膜製品9之情形，但並不限定於該數量。製造時之短邊方向上之薄膜製品9之數量(短邊方向上之切斷刀61之數量)係根據光學膜原片1之短邊方向長度與薄膜製品9之長度之關係而設定。因此，短邊方向上之薄膜製品9之數量為1以上，可適當地設定。 For example, the film product 9 has an edge extending substantially parallel to the long-side direction of the optical film original sheet 1 (knife supporting sheet 2 ) and substantially parallel to the short-side direction of the optical film original sheet 1 (knife supporting sheet 2 ). The edge of the earth's extension. In the illustrated example, the film product 9 is in a plan view substantially quadrilateral having a longitudinal side 9a substantially parallel to the longitudinal direction of the optical film original sheet 1 and a lateral side 9b substantially parallel to the short side direction of the optical film original sheet 1. . In addition, in the example of illustration, although the case where the film product 9 of 5 pieces (5 rows) is manufactured in the short-side direction is shown, it is not limited to this number. The number of the film products 9 in the transversal direction during manufacture (the number of cutting blades 61 in the transversal direction) is set according to the relationship between the length of the optical film original sheet 1 in the transversal direction and the length of the film products 9 . Therefore, the number of the film products 9 in the short-side direction is 1 or more and can be appropriately set.

所獲得之薄膜製品9於製品回收部E回收。如此，可自長條帶狀之光學膜原片1連續地製造薄膜製品9。再者，於上述製造之中途，捲繞於捲出部322之刀支承片材2之剩餘量變少時，可藉由對新的刀支承片材2進行拼接處理而繼續連續地製造薄膜製品9。對新的刀支承片材2進行拼接時，亦與上述同樣地，形成沿相對於切斷刀61之延伸方向交叉之方向延伸之接縫5。 The obtained film product 9 is recovered in the product recovery section E. In this way, the film product 9 can be continuously produced from the long strip-shaped optical film original sheet 1 . In addition, when the remaining amount of the knife supporting sheet 2 wound around the unwinding portion 322 decreases during the above-mentioned production, the film product 9 can be continuously produced by splicing a new knife supporting sheet 2. . When the new blade supporting sheet 2 is spliced, the seam 5 extending in the direction intersecting with the extending direction of the cutting blade 61 is formed in the same manner as described above.

本發明之沖壓裝置A1可抑制光學膜原片1之沖壓不良。圖11係表示刀支承片材2之接縫5附近被搬送至沖壓處理部C時之狀態的參考俯視圖。於圖11中，以二點鏈線表示切斷刀61，以小虛線表示光學膜原片1。圖12係切斷刀61於與接縫5交叉之部位切斷所得之剖面圖，圖13係切斷刀61於不與接縫5交叉之部位切斷所得之剖面圖。參照圖11，於自長條帶狀之光學膜原片1連續地沖壓薄膜製品9之中途，刀支承片材2之接縫5附近到達沖壓處理部C。由於本發明之刀支承片材2之接縫5沿相對於上述切斷刀61之延伸方向交叉之方向延伸，故接縫5與切斷刀61不會呈線狀重疊，接縫5與1個切斷刀61係於交點處相交。圖11之符號Y表示1個切斷刀61之第1部分611(與刀支承片材2之短邊方向大致平行地延伸之第1部分611)與接縫5交叉之交點。 The punching device A1 of the present invention can suppress the poor punching of the optical film original sheet 1 . FIG. 11 is a reference plan view showing a state in which the vicinity of the joint 5 of the knife supporting sheet 2 is conveyed to the press processing unit C. FIG. In FIG. 11 , the cutting blade 61 is indicated by a two-dot chain line, and the optical film original sheet 1 is indicated by a small dotted line. FIG. 12 is a sectional view of the cutting blade 61 obtained by cutting at a portion intersecting with the seam 5 , and FIG. 13 is a sectional view of the cutting blade 61 obtained by cutting at a position not intersecting with the seam 5 . 11 , in the middle of continuously punching the film product 9 from the long strip-shaped optical film original sheet 1 , the vicinity of the seam 5 of the blade support sheet 2 reaches the punching part C. Since the seam 5 of the knife supporting sheet 2 of the present invention extends in a direction intersecting with the extending direction of the cutting blade 61, the seam 5 and the cutting blade 61 do not overlap in a line shape. The two cutting knives 61 intersect at the intersection. Symbol Y in FIG. 11 represents the intersection point where the first portion 611 of one cutting blade 61 (the first portion 611 extending substantially parallel to the short-side direction of the blade support sheet 2 ) and the seam 5 intersect.

該交點Y處之切斷刀61之第1部分611之刀尖61a進入接縫5(參照圖12)，除上述交點以外之第1部分611貫通光學膜原片1之整個厚度方向，由刀支承片材2承接其刀尖61a(參照圖13)。因此，上述切斷刀61之第1部分611之按壓力作用於光學膜原片1之整個厚度方向，而不易產生光學膜原片1之切斷不良。由於可在光學膜原片1形成切斷線X而不會產生切斷不良，故可容易地將沖切殘邊91回收於沖切殘邊去除部D。再者，即便於上述交點處產生略微之切斷不良，由於該不良部位為點，故亦不會妨礙沖切殘邊91之回收。刀尖61a相對於刀支承片材2之進入量可適當設定，例如為0 μm～200 μm。再者，上述進入量係指刀尖61a之前端與刀支承片材2之表面之間之距離。於上述進入量為零之情形時，意味著刀尖61a之前端與刀支承片材2之表面接觸之情形。於圖12及圖13中，對1個切斷刀61之第1部分611與接縫5交叉時進行了說明，但其他切斷刀61之第1部分611與接縫5交叉時亦根據同樣之理由，而不易產生切斷不良。又，切斷刀61之第2部分612與接縫5交叉時亦同樣。 The cutting edge 61a of the first portion 611 of the cutting blade 61 at the intersection Y enters the joint 5 (see FIG. 12 ), and the first portion 611 excluding the above-mentioned intersection penetrates the entire thickness direction of the optical film original sheet 1, The support sheet 2 receives the blade edge 61a (see FIG. 13 ). Therefore, the pressing force of the first portion 611 of the cutting blade 61 acts on the entire thickness direction of the optical film original sheet 1, so that the cutting failure of the optical film original sheet 1 is less likely to occur. Since the cutting line X can be formed in the optical film original sheet 1 without generating a cutting defect, the punching rim 91 can be easily recovered in the punching rim removal part D. Furthermore, even if a slight cutting defect occurs at the above-mentioned intersection, since the defect is a point, the recovery of the blanking stub 91 is not hindered. The entry amount of the blade edge 61a with respect to the blade support sheet 2 can be appropriately set, and is, for example, 0 μm to 200 μm. In addition, the said entry amount means the distance between the front end of the blade edge|tip 61a and the surface of the blade support sheet 2. As shown in FIG. In the case where the above-mentioned entering amount is zero, it means a state where the front end of the blade edge 61a is in contact with the surface of the blade support sheet 2 . In FIGS. 12 and 13 , the case where the first portion 611 of one cutting blade 61 intersects the seam 5 has been described, but the same applies when the first portion 611 of the other cutting blade 61 intersects the seam 5 . For this reason, it is not easy to produce poor cutting. The same applies when the second portion 612 of the cutting blade 61 intersects the seam 5 .

又，於刀支承片材2之表面貼附有拼接膠帶51之情形時，如圖12及圖13所示，產生光學膜原片1重疊於拼接膠帶51上之部位。光學膜原片1中與拼接膠帶51重疊之部位以相當於拼接膠帶51之厚度之量***。因此，壓抵至該部位之切斷刀61相較除此以外之部位更深地進入光學膜原片1。由於切斷刀61自刀尖61a朝向基底板62側而厚度逐漸變厚，故若切斷刀61較深地進入，則相應地，切斷線之寬度變大，有於薄膜製品9產生裂紋等之虞。鑒於該方面，如上所述，藉由使用厚度為50 μm以下之拼接膠帶51，可防止上述薄膜製品9之裂紋等。尤其是，具有保護膜之光學膜原片1利用切斷刀61沖壓時，有產生保護膜之剝離之虞，但藉由使用上述拼接膠帶51，可防止保護膜之剝離等。 Moreover, when the splicing tape 51 is attached to the surface of the knife supporting sheet 2, as shown in FIGS. The portion overlapping the splicing tape 51 in the original optical film 1 is raised by an amount corresponding to the thickness of the splicing tape 51 . Therefore, the cutting blade 61 pressed against this part penetrates into the optical film original sheet 1 deeper than other parts. Since the thickness of the cutting blade 61 gradually increases from the cutting edge 61a toward the base plate 62 side, if the cutting blade 61 penetrates deeper, the width of the cutting line increases accordingly, which may cause cracks in the film product 9 Danger of waiting. In view of this aspect, as described above, by using the splicing tape 51 having a thickness of 50 μm or less, cracks and the like of the above-mentioned film product 9 can be prevented. In particular, when the original optical film sheet 1 with a protective film is punched with the cutting blade 61, there is a possibility of peeling of the protective film, but by using the above-mentioned splicing tape 51, the peeling of the protective film can be prevented.

所獲得之薄膜製品9之層構成與上述之光學膜原片1之層構成相同。於薄膜製品9例如由光學膜11/黏著劑層12/隔離膜13構成之情形時，藉由將隔離膜13剝離，可將薄膜製品9貼附於任意構件(例如圖像顯示裝置之畫面等)。但是，薄膜製品9並不限定於貼附於任意構件而使用之用途。 The layer constitution of the obtained film product 9 is the same as that of the above-mentioned optical film original sheet 1 . When the film product 9 is composed of, for example, the optical film 11/adhesive layer 12/separator film 13, the film product 9 can be attached to any component (such as the screen of an image display device, etc.) by peeling off the release film 13. ). However, the film product 9 is not limited to the application used by being attached to an arbitrary member.

以下，對本發明之第2實施方式等進行說明，但於其說明時，主要對與上述實施方式不同之構成及效果進行說明，關於相同之構成等，有時直接引用用語或符號並省略其構成之說明。Hereinafter, the second embodiment of the present invention and the like will be described, but in the description, the configuration and effects different from those of the above-described embodiment will be mainly described, and the same configuration, etc., may be directly referred to by terms or symbols, and the configuration may be omitted. description.

[第2實施方式] 於上述第1實施方式中，刀支承片材2為如下方式，即，自捲出部322捲出，在通過沖壓處理部C之後捲取至捲取部332，但並不限定於此。例如，如圖14所示，刀支承片材2亦可如帶式輸送機之輸送帶般形成為無端狀。該無端狀之刀支承片材2於圖示之側視下呈環狀，係於沖壓處理部C循環之方式。無端狀之刀支承片材2係藉由使長條帶狀之刀支承片材2為環狀，並將其第1端面與第2端面對接而成之接縫5利用拼接膠帶51接合所獲得。關於無端狀之刀支承片材2，亦與上述第1實施方式同樣地，形成沿相對於切斷刀61之延伸方向交叉之方向延伸之接縫5。於本實施方式之沖壓裝置A2中，亦與上述第1實施方式同樣地，不易產生光學膜原片1之切斷不良。進而，於本實施方式中，使無端狀之刀支承片材2於沖壓處理部C循環，因此，可減少刀支承片材2之使用量。再者，若循環使用無端狀之刀支承片材2，則會於刀支承片材2之表面產生多個切斷刀61之刀尖61a之痕跡，因此，較佳為於適當之時期更換刀支承片材2。 [Second Embodiment] In the above-described first embodiment, the blade support sheet 2 is unwound from the unwinding part 322 and passed through the press processing part C and wound into the winding part 332, but it is not limited to this. For example, as shown in FIG. 14, the blade support sheet 2 may be formed in an endless shape like a conveyor belt of a belt conveyor. The endless knife supporting sheet 2 is annular in the side view shown in the figure, and is in the form of circulation in the stamping processing section C. As shown in FIG. The endless knife supporting sheet 2 is formed by making the long strip-shaped knife supporting sheet 2 ring-shaped, and the joint 5 formed by contacting the first end face and the second end face thereof is joined with a splicing tape 51. obtained. Also about the endless blade support sheet 2, the seam 5 extending in the direction intersecting with the extending direction of the cutting blade 61 is formed similarly to the above-mentioned first embodiment. Also in the press apparatus A2 of this embodiment, similarly to the said 1st Embodiment, the cutting|disconnection defect of the optical film original sheet 1 is hard to generate|occur|produce. Furthermore, in this embodiment, since the endless blade support sheet 2 is circulated in the press processing part C, the usage-amount of the blade support sheet 2 can be reduced. Furthermore, if the endless knife support sheet 2 is used repeatedly, a plurality of traces of the cutting edge 61a of the cutting knife 61 will be produced on the surface of the knife support sheet 2, so it is preferable to replace the knife at an appropriate time. Support sheet 2 .

[第3實施方式] 於上述第1及第2實施方式中，例示出按壓方式之切割器裝置6，但例如，如圖15所示，亦可使用旋轉模頭65。旋轉模頭65係於其周面突出設置有切斷刀61。於本實施方式之沖壓裝置A3中，設置於旋轉模頭65之周面之切斷刀61亦與上述第1實施方式同樣地，以相對於刀支承片材2之接縫5交叉之方式配置。再者，使用旋轉模頭65之情形時，代替上述支承台63而對向配置砧座輥66。 [Third Embodiment] In the above-described first and second embodiments, the cutter device 6 of the pressing method is shown as an example, but a rotary die 65 may be used, for example, as shown in FIG. 15 . The rotary die 65 is provided with a cutting blade 61 protruding from its peripheral surface. In the press apparatus A3 of this embodiment, the cutting blade 61 provided on the peripheral surface of the rotary die 65 is also arranged to intersect with the seam 5 of the blade support sheet 2, similarly to the above-mentioned first embodiment. . In addition, when the rotary die 65 is used, the anvil rolls 66 are arranged to face each other instead of the above-mentioned support table 63 .

[第4實施方式] 於上述第1至第3實施方式中，例示出製造俯視大致四邊形之薄膜製品9之情形，但薄膜製品9之形狀(即，切斷刀61之俯視形狀)並不限定於此，亦可於本發明之意欲之範圍內適當變更。 [4th Embodiment] In the above-mentioned first to third embodiments, the case where the film product 9 having a substantially quadrangular shape in plan view is produced is exemplified, but the shape of the film product 9 (that is, the plan view shape of the cutting blade 61 ) is not limited to this. Appropriate changes can be made within the intended scope of the present invention.

1:光學膜原片 2:刀支承片材 5:接縫 5W:寬度 6:切割器裝置 9:薄膜製品 9a:縱邊 9b:橫邊 11:光學膜 12:黏著劑層 13:隔離膜 14:表面保護膜 15:黏著劑層 16:表面保護膜 17:黏著劑層 21:第1端面 21a:第1端部 22:第2端面 22a:第2端部 31:導輥 34:帶式輸送機 35:帶式輸送機 36:帶式輸送機 37:回收部 51:拼接膠帶 51T:厚度 51W:寬度 61:切斷刀 61a:切斷刀之刀尖 62:基底板 63:支承台 65:旋轉模頭 66:砧座輥 71:按壓輥 72:回收輥 91:沖切殘邊 100:光學膜原片 111:第1保護膜 112:偏光元件 113:第2保護膜 115:相位差膜 200:刀支承片材 210:第1端面 220:第2端面 321:捲出部 322:捲出部 332:捲取部 500:接縫 510:拼接膠帶 610:切斷刀 611:第1部分 612:第2部分 A1,A2,A3:沖壓裝置 B:搬送部 C:沖壓處理部 D:沖切殘邊去除部 E:製品回收部 S1:中空箭頭 S2:中空箭頭 S3:中空箭頭 S4:中空箭頭 X:切斷線 Y:交點 α:角度 β:角度 1: Original optical film 2: Knife support sheet 5: seams 5W: width 6: Cutter device 9: Film products 9a: Longitudinal edge 9b: horizontal edge 11: Optical film 12: Adhesive layer 13: Isolation film 14: Surface protection film 15: Adhesive layer 16: Surface protection film 17: Adhesive layer 21: The first end face 21a: 1st end 22: 2nd end face 22a: 2nd end 31: Guide roller 34: Belt Conveyor 35: Belt Conveyor 36: Belt Conveyor 37: Recycling Department 51: Splicing Tape 51T: Thickness 51W: width 61: Cut off knife 61a: The tip of the cutting knife 62: base plate 63: Support table 65: Rotary die 66: Anvil Roll 71: Press Roller 72: Recovery Roller 91: Punching stubs 100: Original optical film 111: The first protective film 112: polarizing element 113: The second protective film 115: retardation film 200: Knife Support Sheet 210: 1st end face 220: 2nd end face 321: Volume Out Department 322: Volume Out Department 332: Coiler 500: seams 510: Splicing Tape 610: Cut off knife 611: Part 1 612: Part 2 A1, A2, A3: Stamping device B: conveying department C: Stamping processing department D: Punching stub removal part E: Product Recycling Department S1: hollow arrow S2: hollow arrow S3: hollow arrow S4: hollow arrow X: cut line Y: intersection α: angle β: angle

圖1係表示本發明之第1實施方式之光學膜之沖壓裝置之概略側視圖。圖2係光學膜原片之俯視圖。圖3係表示一例之光學膜原片之層構成之概略側視圖。圖4係表示另一例之光學膜原片之層構成之概略側視圖。圖5係包含接縫之刀支承片材之俯視圖。圖6係以圖5之VI-VI線切斷所得之放大剖面圖。「剖面圖」係僅表示切斷面之形狀而未表示較切斷面更裏側之形狀的圖。圖7係表示貼附拼接膠帶之前之刀支承片材之接縫之俯視圖。圖8係切斷刀之俯視圖。圖9係切斷刀之放大立體圖。圖10係表示沖壓光學膜原片時之各步驟中之刀支承片材等之狀態的俯視圖。圖11係表示切斷刀之一部分與刀支承片材之接縫交叉時之狀態的俯視圖。圖12係以圖11之XII-XII線切斷所得之剖面圖。圖13係以圖11之XIII-XIII線切斷所得之剖面圖。圖14係表示第2實施方式之光學膜之沖壓裝置之概略側視圖。圖15係表示第3實施方式之光學膜之沖壓裝置之概略側視圖。圖16係表示先前之問題之參考圖。 1 : is a schematic side view which shows the press apparatus of the optical film concerning 1st Embodiment of this invention. Figure 2 is a top view of the original optical film. FIG. 3 is a schematic side view showing the layer structure of an example of an optical film original sheet. FIG. 4 is a schematic side view showing the layer structure of an optical film original sheet of another example. Figure 5 is a top view of a knife support sheet including seams. FIG. 6 is an enlarged cross-sectional view taken along the line VI-VI of FIG. 5 . "Cross-sectional view" is a figure which shows only the shape of a cut surface, and does not show the shape further back than a cut surface. Figure 7 is a top view showing the seam of the knife support sheet prior to attaching the splicing tape. Fig. 8 is a top view of the cutting blade. FIG. 9 is an enlarged perspective view of the cutting blade. FIG. 10 is a plan view showing the state of the knife support sheet and the like in each step of punching an optical film original sheet. Fig. 11 is a plan view showing a state where a part of the cutting blade intersects the seam of the blade support sheet. FIG. 12 is a cross-sectional view taken along the line XII-XII of FIG. 11 . FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 11 . FIG. 14 is a schematic side view showing a punching apparatus for an optical film according to a second embodiment. FIG. 15 is a schematic side view showing a punching apparatus for an optical film according to a third embodiment. FIG. 16 is a reference diagram showing the previous problem.

1:光學膜原片 2:刀支承片材 5:接縫 51:拼接膠帶 61:切斷刀 611:第1部分 612:第2部分 Y:交點 1: Original optical film 2: Knife support sheet 5: seams 51: Splicing Tape 61: Cut off knife 611: Part 1 612: Part 2 Y: intersection

Claims

一種光學膜之沖壓裝置，其係利用切斷刀沖壓光學膜原片而製造複數個薄膜製品之裝置，且包含：搬送部，其將支承上述切斷刀之刀尖之刀支承片材、及上述光學膜原片分別於長邊方向上搬送；及沖壓處理部，其將上述切斷刀自與上述刀支承片材相反之側壓抵至上述光學膜原片；上述刀支承片材具有將片材之第1端面與第2端面對接而成之接縫，上述接縫沿相對於上述切斷刀之延伸方向交叉之方向延伸，且上述沖壓處理部中，沖壓上述光學膜原片之上述切斷刀與上述刀支承片材之接縫不呈線狀重疊而於交點處相交。 A punching device for an optical film, which uses a cutting blade to punch an optical film original sheet to manufacture a plurality of thin film products, and comprises: a conveying part for supporting a blade supporting sheet for supporting the edge of the cutting blade, and The above-mentioned optical film original sheets are conveyed in the longitudinal direction, respectively; and a press processing unit that presses the above-mentioned cutting blade against the above-mentioned optical film original sheet from the side opposite to the above-mentioned knife supporting sheet; A seam formed by connecting the first end face and the second end face of the material, the seam extends in a direction intersecting with the extending direction of the cutting blade, and in the punching part, the original optical film sheet is punched. The seam between the cutting blade and the blade supporting sheet does not overlap linearly, but intersects at the intersection.

如請求項1之光學膜之沖壓裝置，其中上述刀支承片材之接縫相對於上述刀支承片材之與長邊方向正交之短邊方向傾斜地延伸。 The punching apparatus for an optical film according to claim 1, wherein the seam of the blade supporting sheet extends obliquely with respect to the short side direction of the blade supporting sheet perpendicular to the longitudinal direction.

如請求項1或2之光學膜之沖壓裝置，其中將拼接膠帶覆蓋上述接縫且橫跨上述片材之第1端部與第2端部而貼附於上述刀支承片材，且上述拼接膠帶之厚度為50μm以下。 The punching device for an optical film according to claim 1 or 2, wherein a splicing tape covers the seam and is attached to the knife supporting sheet across the first end and the second end of the sheet, and the splicing The thickness of the tape is 50 μm or less.

一種薄膜製品之製造方法，其係利用切斷刀沖壓光學膜原片而獲得複數個薄膜製品之方法，且包含如下步驟：將支承上述切斷刀之刀尖之刀支承片材、及上述光學膜原片分別於長邊方向上搬送；藉由將上述切斷刀自與上述刀支承片材相反之側壓抵至上述光學膜原片，自上述光學膜原片沖壓出複數個薄膜製品；上述刀支承片材具有將片材之第1端面與第2端面對接而成之接縫，上述刀支承片材之接縫沿相對於上述沖壓之薄膜製品之任一緣交叉之方向延伸，且上述沖壓處理步驟中，沖壓上述光學膜原片之上述切斷刀與上述刀支承片材之接縫不呈線狀重疊而於交點處相交。 A method of manufacturing a film product, which is a method for obtaining a plurality of film products by punching an optical film original sheet with a cutting knife, and comprising the steps of: a knife supporting sheet supporting the cutting edge of the cutting knife, and the above-mentioned optical film The original films were Conveying in the longitudinal direction; by pressing the cutting blade against the optical film original sheet from the side opposite to the blade supporting sheet, a plurality of film products are punched out from the optical film original sheet; the blade supporting sheet has The seam formed by connecting the first end face and the second end face of the sheet, the seam of the knife supporting sheet extends in a direction intersecting with either edge of the punched film product, and the punching treatment step Among them, the seam between the cutting blade for punching the optical film original sheet and the blade supporting sheet does not overlap linearly but intersects at the intersection.

如請求項4之薄膜製品之製造方法，其中上述刀支承片材之接縫相對於上述刀支承片材之與長邊方向正交之短邊方向傾斜地延伸。 The method for producing a film product according to claim 4, wherein the seam of the above-mentioned blade supporting sheet extends obliquely with respect to the short-side direction of the above-mentioned blade supporting sheet, which is orthogonal to the long-side direction.

如請求項4或5之薄膜製品之製造方法，其中上述薄膜製品呈俯視大致四邊形，該俯視大致四邊形具有與上述光學膜原片之長邊方向大致平行之縱邊及與上述光學膜原片之短邊方向大致平行之橫邊。 The method for producing a film product according to claim 4 or 5, wherein the film product is substantially quadrilateral in plan view, and the substantially quadrilateral shape in plan view has a longitudinal side substantially parallel to the longitudinal direction of the optical film original sheet and a distance between the optical film original sheet and the optical film original sheet. A horizontal side that is approximately parallel to the short side direction.

如請求項4或5之薄膜製品之製造方法，其中將拼接膠帶覆蓋上述接縫且橫跨上述片材之第1端部與第2端部而貼附於上述刀支承片材，且上述拼接膠帶之厚度為50μm以下。 The method for producing a film product according to claim 4 or 5, wherein a splicing tape covers the seam and is attached to the knife supporting sheet across the first end and the second end of the sheet, and the splicing The thickness of the tape is 50 μm or less.

如請求項4或5之薄膜製品之製造方法，其中上述薄膜製品包含經由黏著劑層而積層之表面保護膜。 The method for producing a film product according to claim 4 or 5, wherein the film product comprises a surface protective film laminated via an adhesive layer.

如請求項4或5之薄膜製品之製造方法，其中上述薄膜製品包含偏光元件。 The method for producing a film product according to claim 4 or 5, wherein the film product includes a polarizing element.