TW201945193A - Resin sheet and method of manufacture therefor - Google Patents
Resin sheet and method of manufacture therefor Download PDFInfo
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- TW201945193A TW201945193A TW108113043A TW108113043A TW201945193A TW 201945193 A TW201945193 A TW 201945193A TW 108113043 A TW108113043 A TW 108113043A TW 108113043 A TW108113043 A TW 108113043A TW 201945193 A TW201945193 A TW 201945193A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/13—Surface milling of plates, sheets or strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polarising Elements (AREA)
- Milling Processes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
本發明涉及一種樹脂片材及其製造方法。The invention relates to a resin sheet and a manufacturing method thereof.
發明背景
因應用途的各種樹脂片材受到廣泛利用。樹脂片材在裁切成預定形狀後，有時會供於進行藉由切削裁切面所行之精加工。並且，近年有時會期望將樹脂片材加工成矩形以外(異形加工)。所述切削加工中，有時會利用端銑刀進行切削。然而，利用端銑刀進行切削加工後之樹脂片材會有產生裂痕之情形。BACKGROUND OF THE INVENTION Various resin sheets are widely used depending on the application. After the resin sheet is cut into a predetermined shape, it may be used for finishing by cutting the cutting surface. In addition, in recent years, it has been desired to process a resin sheet other than a rectangle (special shape processing). In the cutting process, an end mill is sometimes used for cutting. However, cracks may occur in the resin sheet after cutting with an end mill.
先行技術文獻
專利文獻
專利文獻1：日本特開2007-187781號公報
專利文獻2：日本特開2018-022140號公報Prior art document Patent document Patent document 1: Japanese Patent Laid-Open No. 2007-187781 Patent document 2: Japanese Patent Laid-Open No. 2018-022140
發明概要
發明欲解決之課題
本發明是為了解決上述以往課題而成者，其主要目的在於提供一種雖經已切削加工但裂痕經抑制的樹脂片材及可製造所述樹脂片材之方法。SUMMARY OF THE INVENTION Problems to be Solved by the Invention The present invention has been made to solve the above-mentioned conventional problems, and its main object is to provide a resin sheet which has been subjected to cutting processing but whose cracks are suppressed, and a method for producing the resin sheet.
用以解決課題之方法
本發明樹脂片材係經切削加工之樹脂片材，且其切削端面的正常反射率RR與漫反射率DR之比RR/DR為0.10以上。
在一實施形態中，上述樹脂片材包含接著劑層及/或黏著劑層。
在一實施形態中，上述樹脂片材包含偏光件。
根據本發明之另一面向，可提供一種上述樹脂片材之製造方法。該製造方法包含以下步驟：將多片該樹脂片材疊合而形成工件；及，使具有旋轉軸與切削刃的切削機構之該切削刃抵接該工件之外周面來切削該工件之外周面，該切削機構之旋轉軸係沿該工件之積層方向延伸，且該切削刃係構成為以該旋轉軸為中心旋轉的本體之最外徑。
在一實施形態中，該切削刃的HV硬度為7000以上，且該切削機構的進給速度F與該切削刃的接觸次數T之比F/T為0.012以上。此時，切削刃包含燒結鑽石。
在另一實施形態中，該切削刃的HV硬度為2000以上，且該切削機構的進給速度F與該切削刃的接觸次數T之比F/T為0.015以上。此時，切削刃係以超硬合金構成。Solution to Problem The resin sheet of the present invention is a resin sheet that has been cut and processed, and the ratio of the normal reflectance RR to the diffuse reflectance DR RR / DR of the cut end face is 0.10 or more.
In one embodiment, the resin sheet includes an adhesive layer and / or an adhesive layer.
In one embodiment, the resin sheet includes a polarizer.
According to another aspect of the present invention, a method for manufacturing the above resin sheet can be provided. The manufacturing method includes the steps of: forming a workpiece by stacking a plurality of the resin sheets; and cutting the outer peripheral surface of the workpiece by abutting the cutting edge of a cutting mechanism having a rotating shaft and a cutting edge on the outer peripheral surface of the workpiece The rotating shaft of the cutting mechanism extends along the lamination direction of the workpiece, and the cutting edge is configured as the outermost diameter of the main body rotating around the rotating shaft.
In one embodiment, the HV hardness of the cutting edge is 7000 or more, and the ratio F / T of the feed rate F of the cutting mechanism to the number of contact times T of the cutting edge is 0.012 or more. At this time, the cutting edge contains sintered diamond.
In another embodiment, the HV hardness of the cutting edge is 2,000 or more, and the ratio F / T of the feed rate F of the cutting mechanism to the number of contact times T of the cutting edge is 0.015 or more. In this case, the cutting edge is made of a cemented carbide.
發明效果
根據本發明，藉由令經切削加工之樹脂片材的切削端面之正常反射率RR與漫反射率DR之比RR/DR在0.10以上，而可抑制裂痕(尤其是熱循環試驗後之裂痕)。所述樹脂片材可藉由在切削加工(代表上為端銑刀加工)時令切削刃之HV硬度、及切削機構之進給速度與切削刃之接觸次數的比之關係最佳化，從而實現。ADVANTAGE OF THE INVENTION According to this invention, by making the ratio RR / DR of the normal reflectance RR and the diffuse reflectance DR of a cutting end surface of a resin sheet after a cutting process into 0.10 or more, cracks (especially after a thermal cycle test) can be suppressed. crack). The resin sheet can optimize the relationship between the HV hardness of the cutting edge and the ratio of the feed rate of the cutting mechanism to the number of contact times of the cutting edge during cutting (representatively, end mill processing), thereby, achieve.
用以實施發明之形態
以下參照圖式就本發明具體實施形態進行說明，惟本發明不受該等實施形態限定。此外，為了便於觀看而示意顯示圖式，並且圖式中之長度、寬度、厚度等比率、以及角度等與實際有所差異。Forms for Implementing the Invention Specific embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited by these embodiments. In addition, the drawings are shown schematically for easy viewing, and the ratios of the length, width, thickness, and angle in the drawings are different from the actual ones.
A.樹脂片材
樹脂片材可舉可用於需進行切削加工之用途上之任意適當的樹脂片材。樹脂片材可為單層構成之薄膜亦可為積層體。樹脂片材之具體例可舉光學薄膜。光學薄膜之具體例可舉偏光件、相位差薄膜、偏光板(代表上為偏光件與保護薄膜之積層體)、觸控面板用導電性薄膜、表面處理薄膜、以及因應目的將該等適當積層而成之積層體(例如抗反射用圓偏光板、觸控面板用附導電層之偏光板)。根據本發明之實施形態，尤其在含有像偏光件這般容易收縮之光學薄膜的樹脂薄膜上可顯著抑制裂痕。在一實施形態中，樹脂片材包含接著劑層及/或黏著劑層。根據本發明之實施形態，即使是在將含有接著劑層及/或黏著劑層之樹脂片材進行切削加工後，仍可抑制裂痕(尤其是熱循環試驗後之裂痕)。A. Resin Sheet The resin sheet may be any appropriate resin sheet that can be used for applications requiring cutting. The resin sheet may be a single-layer film or a laminated body. Specific examples of the resin sheet include an optical film. Specific examples of the optical film include a polarizer, a retardation film, a polarizing plate (represented as a laminated body of a polarizer and a protective film), a conductive film for a touch panel, a surface treatment film, and the appropriate lamination according to the purpose. The laminated body (for example, a circular polarizing plate for antireflection, and a polarizing plate with a conductive layer for a touch panel). According to the embodiment of the present invention, cracks can be significantly suppressed particularly on a resin film containing an optical film that is easily shrunk like a polarizer. In one embodiment, the resin sheet includes an adhesive layer and / or an adhesive layer. According to the embodiment of the present invention, cracks (especially cracks after a thermal cycle test) can be suppressed even after cutting a resin sheet containing an adhesive layer and / or an adhesive layer.
本發明實施形態中，樹脂片材的切削端面的正常反射率RR與漫反射率DR之比RR/DR為0.10以上，宜為0.14以上，且宜為0.16以上，更宜為0.18以上。比RR/DR的上限例如為0.30，宜為0.24。只要比RR/DR在所述範圍內，即可抑制經切削加工(例如端銑刀加工)之樹脂片材上的裂痕(尤其是熱循環試驗後之裂痕)。In the embodiment of the present invention, the ratio RR / DR of the normal reflectance RR to the diffuse reflectance DR of the cut end surface of the resin sheet is 0.10 or more, preferably 0.14 or more, and preferably 0.16 or more, and more preferably 0.18 or more. The upper limit of the ratio RR / DR is, for example, 0.30, and preferably 0.24. As long as the ratio RR / DR is within the above range, it is possible to suppress cracks (particularly, cracks after a thermal cycle test) on a resin sheet subjected to cutting processing (for example, end mill processing).
樹脂片材的切削端面的正常反射率RR宜為0.30%以上，且宜為0.40%以上，更宜為0.50%以上。正常反射率RR的上限例如為0.75%，宜為0.65%。樹脂片材的切削端面的漫反射率DR宜為2.40%~5.00%，且宜為2.50%~3.50%。The normal reflectance RR of the cut end surface of the resin sheet is preferably 0.30% or more, and preferably 0.40% or more, and more preferably 0.50% or more. The upper limit of the normal reflectance RR is, for example, 0.75%, preferably 0.65%. The diffuse reflectance DR of the cut end surface of the resin sheet should preferably be 2.40% to 5.00%, and should be 2.50% to 3.50%.
正常反射率RR及漫反射率DR例如係依下述方式求得，並從所得RR及DR算出比RR/DR。隨機選出經切削加工之樹脂片材，再將所選出之樹脂片材積層而製作出厚度約15mm之疊層。更詳細而言，樹脂片材係從多個不同的工件(有關工件將於後述)中隨機選出。在使所製作出之疊層的測定面平整之狀態下，於與疊層之測定面方向的兩端部距離預定距離之位置(2處)繞上橡皮筋將疊層綑綁。針對綑綁後之疊層的測定面，使用分光測色計(例如Konica Minolta公司製「CM-2600d」)測定SCI(Specular Component Include，包含鏡面正反射光)及SCE(Specular Component Exclude，排除鏡面正反射光)，並由以下式求得正常反射率RR及漫反射率DR。
正常反射率RR＝SCI-SCE
漫反射率DR＝SCEThe normal reflectance RR and the diffuse reflectance DR are obtained, for example, in the following manner, and the ratio RR / DR is calculated from the obtained RR and DR. The resin sheet material after cutting is randomly selected, and the selected resin sheet material is laminated to produce a laminate having a thickness of about 15 mm. More specifically, the resin sheet is randomly selected from a plurality of different workpieces (the workpieces will be described later). In a state where the measurement surface of the produced laminate is flattened, a rubber band is wound around a predetermined distance (two places) from both ends in the direction of the measurement surface of the laminate to bind the laminate. Measure the SCI (Specular Component Include (including specular specular reflection light)) and SCE (Specular Component Exclude, specular component exclusion) on the measurement surface of the laminated stack after binding with a spectrophotometer (for example, "CM-2600d" manufactured by Konica Minolta). (Reflected light), and the normal reflectance RR and the diffuse reflectance DR are obtained from the following formulas.
Normal reflectance RR = SCI-SCE
Diffuse reflectance DR = SCE
以下針對RR/DR更詳細說明。圖1係在將RR/DR滿足如上述之範圍的樹脂片材積層成預定厚度之狀態下觀察切削端面之透射光的狀態而得之照片，圖2係在將RR/DR脫離如上述之範圍的樹脂片材積層成預定厚度之狀態下觀察切削端面之透射光的狀態而得之照片。比較圖1與圖2即可知，RR/DR滿足如上述之範圍的樹脂片材其光的輪廓明確(亦即有光澤)，而另一方面，RR/DR脫離如上述之範圍的樹脂片材其光的輪廓不明確(無光澤)。本發明人等針對經切削加工(代表上為端銑刀加工)之樹脂片材上的裂痕問題進行了反覆試錯，結果發現在切削端面有光澤的樹脂片材上裂痕會受到抑制。並且，本發明人等發現所述切削端面有光澤的樹脂片材，可依後述在切削加工(代表上為端銑刀加工)時令切削刃之HV硬度、及切削機構之進給速度與切削刃之接觸次數的比之關係最佳化，從而實現。如上所述，本發明係解決樹脂片材之切削加工(代表上為端銑刀加工)中所產生之新課題者，藉由使切削端面之光澤(或RR/DR)最佳化而得之效果實乃未預期之優異效果。另外，在圖1及圖2中為了使差異明確化而顯示透射光的狀態，惟反射光之光澤亦對應於此。The RR / DR is described in more detail below. Fig. 1 is a photograph obtained by observing the state of transmitted light at the cutting end face in a state where a resin sheet having an RR / DR satisfying the above-mentioned range is laminated to a predetermined thickness, and Fig. 2 is a diagram where the RR / DR is out of the above-mentioned range A photo obtained by observing the state of the transmitted light of the cutting end face in a state where the resin sheet is laminated to a predetermined thickness. Comparing FIG. 1 and FIG. 2, it can be seen that the resin sheet whose RR / DR satisfies the above-mentioned range has a clear light profile (that is, shiny), and on the other hand, the RR / DR is out of the resin sheet in the above-mentioned range. The outline of its light is not clear (matte). The present inventors made trial and error with respect to the problem of cracks on the resin sheet after cutting processing (represented by end mill processing), and found that cracks on the resin sheet with a shiny cutting end surface were suppressed. In addition, the present inventors have discovered that the resin sheet with a shiny cutting end surface can be used for cutting the HV hardness of the cutting edge and the feed rate and cutting of the cutting mechanism during cutting processing (representatively, end mill processing). The relationship between the number of contact times of the blades is optimized, thereby realizing. As described above, the present invention is a person who solves a new problem that arises in cutting processing of a resin sheet (represented by end mill processing), and is obtained by optimizing the gloss (or RR / DR) of the cutting end surface. The effect is unexpectedly excellent. In addition, in FIG. 1 and FIG. 2, the state of transmitted light is shown in order to make the difference clear, but the gloss of the reflected light also corresponds to this.
以下舉一例說明如圖3所示平面形狀之樹脂片材之製造方法中的各步驟。An example is given below to explain each step in the method for manufacturing a resin sheet having a planar shape as shown in FIG. 3.
B.形成工件
圖4係用以說明切削加工的概略立體圖，本圖中顯示了工件1。如圖4所示，係形成疊合有多片樹脂片材而成之工件1。樹脂片材在形成工件時，代表上係裁切成任意適當之形狀。具體而言，樹脂片材可裁切成矩形形狀，亦可裁切成類似矩形形狀之形狀，而亦可裁切成因應目的之適當形狀(例如圓形)。圖式例中，光學積層體係裁切成矩形形狀，而工件1具有彼此相對向的外周面(切削面)1a、1b及與該等正交的外周面(切削面)1c、1d。工件1宜被鉗夾機構(未圖示)從上下鉗著。工件的總厚度宜為8mm~20mm，且宜為9mm~15mm，更宜為約10mm。只要為所述厚度，即可防止鉗夾機構之擠壓或切削加工時之衝撃造成損傷。樹脂片材係將工件疊合成所述之總厚度。構成工件之樹脂片材的片數例如可為10片~50片。鉗夾機構(例如夾具)可以軟質材料構成亦可以硬質材料構成。以軟質材料構成時，其硬度(JIS A)宜為60°~80°。若硬度過高，則會有鉗夾機構所造成之壓痕殘留的情形。若硬度過低，則會因夾具之變形造成位置偏移，而使其有切削精度不足之情形。B. Forming the Work FIG. 4 is a schematic perspective view for explaining cutting processing, and the work 1 is shown in the figure. As shown in FIG. 4, a workpiece 1 is formed by stacking a plurality of resin sheets. When a resin sheet is formed into a workpiece, the upper part is cut into any appropriate shape. Specifically, the resin sheet may be cut into a rectangular shape, a shape similar to a rectangular shape, or a suitable shape (for example, a circle) according to the purpose. In the illustrated example, the optical laminated system is cut into a rectangular shape, and the workpiece 1 has outer peripheral surfaces (cutting surfaces) 1a, 1b facing each other and outer peripheral surfaces (cutting surfaces) 1c, 1d that are orthogonal to each other. The workpiece 1 should be clamped from above and below by a clamping mechanism (not shown). The total thickness of the workpiece should be 8mm ~ 20mm, and should be 9mm ~ 15mm, more preferably about 10mm. As long as it has the thickness, it can prevent damage caused by the pressing or cutting of the jaw mechanism. Resin sheets are laminated to the total thickness described above. The number of the resin sheets constituting the workpiece may be, for example, 10 to 50. The jaw mechanism (such as a clamp) may be made of a soft material or a hard material. When composed of a soft material, the hardness (JIS A) is preferably 60 ° to 80 °. If the hardness is too high, the indentation caused by the clamping mechanism may remain. If the hardness is too low, the position will be shifted due to the deformation of the fixture, which may cause the cutting accuracy to be insufficient.
C.切削加工
接著，利用切削機構20切削工件1的外周面。切削係藉由使切削機構之切削刃與工件1之外周面抵接來進行。切削可涵蓋工件之外周面的全周進行，而亦可僅於預定之位置進行。要製作圖3所示的平面形狀之樹脂片材時，切削在代表上係涵蓋工件之外周面的全周進行。切削加工代表上如圖4～圖6所示，即所謂端銑刀加工。亦即，使用切削機構(端銑刀)20之側面切削工件1的外周面。切削機構(端銑刀)20代表上可使用直刃端銑刀。C. Cutting Processing Next, the outer peripheral surface of the workpiece 1 is cut by the cutting mechanism 20. Cutting is performed by bringing the cutting edge of the cutting mechanism into contact with the outer peripheral surface of the workpiece 1. Cutting can be performed over the entire circumference of the outer peripheral surface of the workpiece, or it can be performed only at a predetermined position. When a resin sheet having a flat shape as shown in FIG. 3 is to be produced, cutting is performed over the entire circumference representing the outer peripheral surface of the workpiece on the upper system. The cutting process is represented as shown in Figures 4 to 6, which is the so-called end milling cutter process. That is, the outer peripheral surface of the workpiece 1 is cut using the side surface of the cutting mechanism (end mill) 20. The cutting mechanism (end mill) 20 represents that a straight-edge end mill can be used.
端銑刀20如圖5及圖6所示，具有：旋轉軸21，係沿工件1之積層方向(鉛直方向)延伸；及切削刃22，係構成為以旋轉軸21為中心旋轉的本體之最外徑。切削刃22可如圖5所示構成為沿旋轉軸21扭轉之最外徑(可具有預定之扭轉角)，亦可如圖6所示構成為沿實質上平行於旋轉軸21之方向延伸(扭轉角可為0°)。另外，「0°」意指在實質上為0°，還包含因加工誤差等而有些微角度扭轉時之情形。切削刃具有預定扭轉角時，扭轉角宜為70°以下，且宜為65°以下，更宜為45°以下。切削刃22包含刀鋒22a、前刀面22b與後刀面22c。切削刃22的刃數只要可獲得後述所期望之接觸次數即可適當設定。圖5中的刃數為3片而圖6中的刃數為2片，但刃數可為1片，可為4片，亦可為5片以上。刃數宜為2片。只要為所述構成，即可確保刃之剛性，且可確保容屑槽而可良好排出切屑。As shown in FIG. 5 and FIG. 6, the end mill 20 includes: a rotating shaft 21 that extends in a lamination direction (vertical direction) of the workpiece 1; and a cutting edge 22 that is configured to rotate around the rotating shaft 21 as a center. Most outer diameter. As shown in FIG. 5, the cutting edge 22 may be configured to have an outer diameter (which may have a predetermined twist angle) twisted along the rotation axis 21, or may be configured to extend in a direction substantially parallel to the rotation axis 21 as shown in FIG. 6 ( The twist angle can be 0 °). In addition, "0 °" means substantially 0 °, and also includes a case where there is a slight angle twist due to processing errors and the like. When the cutting edge has a predetermined twist angle, the twist angle is preferably 70 ° or less, and preferably 65 ° or less, and more preferably 45 ° or less. The cutting edge 22 includes a cutting edge 22a, a rake surface 22b, and a flank surface 22c. The number of edges of the cutting edge 22 can be appropriately set as long as the desired number of contact times described later can be obtained. The number of edges in FIG. 5 is three and the number of edges in FIG. 6 is two, but the number of edges may be one, four, or five or more. The number of blades should be 2 pieces. As long as it has the said structure, the rigidity of a blade can be ensured, and a chip flute can be ensured and a chip can be discharged | emitted well.
在一實施形態中，切削刃22的HV硬度代表上為1500以上，宜為1700以上，更宜為2000以上。HV硬度的上限可為例如2350。此時，切削刃代表上係以超硬合金構成。超硬合金代表上可燒結金屬碳化物之粉末而得。超硬合金的具體例可舉WC-Co系合金、WC-TiC-Co系合金、WC-TaC-Co系合金、WC-TiC-TaC-Co系合金。本實施形態中，端銑刀20的進給速度F與切削刃22的接觸次數(與工件的接觸次數)T之比F/T，代表上為0.015以上，宜為0.020以上，且宜為0.030以上。F/T的上限可為例如0.070。此處，切削刃的接觸次數係以端銑刀的旋轉數(rpm)與刃數之積表示。此外，HV硬度亦稱維氏硬度，可依循JIS Z 2244測得。又，本明說明書中，「進給速度」係指切削機構(端銑刀)與工件之相對速度。因此，切削加工時，可僅使端銑刀移動，可僅使工件移動，亦可使端銑刀與工件兩者移動。In one embodiment, the HV hardness of the cutting edge 22 is typically 1,500 or more, preferably 1700 or more, and more preferably 2000 or more. The upper limit of the HV hardness may be, for example, 2350. At this time, the cutting edge is made of cemented carbide on the representative side. Cemented carbide is obtained from powders of sinterable metal carbides. Specific examples of the cemented carbide include a WC-Co-based alloy, a WC-TiC-Co-based alloy, a WC-TaC-Co-based alloy, and a WC-TiC-TaC-Co-based alloy. In this embodiment, the ratio F / T of the feed rate F of the end mill 20 and the number of contact (the number of contact with the workpiece) T of the cutting edge 22 is F / T, which represents 0.015 or more, preferably 0.020 or more, and 0.030. the above. The upper limit of F / T may be, for example, 0.070. Here, the number of contact of the cutting edge is expressed by the product of the number of rotations (rpm) of the end mill and the number of edges. In addition, HV hardness is also called Vickers hardness and can be measured according to JIS Z 2244. In the present specification, "feed speed" refers to the relative speed of the cutting mechanism (end mill) and the workpiece. Therefore, during the cutting process, only the end mill can be moved, only the workpiece can be moved, and both the end mill and the workpiece can be moved.
在另一實施形態中，切削刃22的HV硬度代表上為7000以上，宜為8000以上，且宜為9000以上，10000以上更佳。HV硬度的上限可為例如15000。此時，切削刃代表上包含燒結鑽石。更詳細而言，切削刃係於超硬合金所構成之基部上形成有燒結鑽石層。燒結鑽石(PCD：Polycrystalline diamond)係指將鑽石的小粒與金屬及/或陶瓷粉一同在高溫、高壓下燒結而成之多晶鑽石。本實施形態中，端銑刀20的進給速度F與切削刃22的接觸次數(與工件的接觸次數)T之比F/T，代表上為0.012以上，宜為0.020以上，且宜為0.030以上。F/T的上限可為例如0.070。In another embodiment, the HV hardness of the cutting edge 22 is typically 7,000 or more, preferably 8,000 or more, and preferably 9,000 or more, and more preferably 10,000 or more. The upper limit of the HV hardness may be, for example, 15,000. At this time, the cutting edge representative contains sintered diamond. More specifically, the cutting edge has a sintered diamond layer formed on a base made of a cemented carbide. Sintered diamond (PCD: Polycrystalline diamond) refers to a polycrystalline diamond sintered with small particles of diamond and metal and / or ceramic powder at high temperature and pressure. In the present embodiment, the ratio F / T of the feed rate F of the end mill 20 to the number of contact (the number of contact with the workpiece) T of the cutting edge 22 F / T is representatively 0.012 or more, preferably 0.020 or more, and preferably 0.030. the above. The upper limit of F / T may be, for example, 0.070.
切削加工的條件只要可獲得上述所期望的F/T即可適當設定。端銑刀的進給速度F宜為500mm/分鐘~10000mm/分鐘，且宜為500mm/分鐘~2500mm/分鐘。端銑刀的旋轉數宜為5000rpm~60000rpm，且宜為15000rpm~45000rpm。切削次數可削1次、削2次、削3次或其以上。在一實施形態中，端銑刀20的直徑宜為3mm~20mm。The cutting conditions can be appropriately set as long as the desired F / T is obtained. The feed speed F of the end mill should be 500mm / min ~ 10000mm / min, and should be 500mm / min ~ 2500mm / min. The number of rotations of the end mill should be 5000rpm ~ 60,000rpm, and 15000rpm ~ 45000rpm. Cutting times can be cut once, twice, three times or more. In one embodiment, the diameter of the end mill 20 is preferably 3 mm to 20 mm.
依上述方式，可製得具有預定RR/DR之經切削加工之樹脂片材。此外，經切削加工之樹脂片材代表上可具有切削痕。
實施例In the above manner, a cut-processed resin sheet having a predetermined RR / DR can be obtained. In addition, the cut resin sheet may have cutting marks on it.
Examples
以下，以實施例來具體說明本發明，惟本發明不受該等實施例限定。實施例之評估項目如下。Hereinafter, the present invention will be specifically described with examples, but the present invention is not limited by these examples. The evaluation items of the examples are as follows.
(1)RR/DR
從實施例及比較例中所製得之多個不同的工件中隨機選出偏光板，再將所選出之偏光板積層而製作出厚度約15mm之疊層。在使所製作出之疊層的測定面平整之狀態下，於與疊層之測定面方向的兩端部距離10mm之位置(2處)繞上橡皮筋(IGO公司製，#7)將疊層綑綁。針對綑綁後之疊層的測定面，使用分光測色計(Konica Minolta公司製「CM-2600d」)測定SCI及SCE，並由以下式求得正常反射率RR及漫反射率DR。
正常反射率RR＝SCI-SCE
漫反射率DR＝SCE
(2)裂痕
對在實施例及比較例製得之偏光板進行在-40℃~85℃下200循環之熱循環(熱衝擊)試驗。針對試驗後之裂痕產生狀況，使用以光學顯微鏡放大後之影像測定裂痕之長度。將觀測到的裂痕的最大長度作為評估指標。具體而言，裂痕的最大長度少於150μm時評估為「良好」，為150μm以上時評估為「不良」。(1) RR / DR
A polarizing plate was randomly selected from a plurality of different workpieces prepared in the examples and comparative examples, and the selected polarizing plates were laminated to produce a laminate having a thickness of about 15 mm. With the measurement surface of the produced laminate flattened, a rubber band (# 7, manufactured by IGO Corporation) was wound at a position (two places) at a distance of 10 mm from both ends in the direction of the measurement surface of the laminate, and the stack was stacked. Tied bundles. Regarding the measurement surface of the laminated stack, the SCI and SCE were measured using a spectrophotometer ("CM-2600d" manufactured by Konica Minolta), and the normal reflectance RR and diffuse reflectance DR were obtained from the following formulas.
Normal reflectance RR = SCI-SCE
Diffuse reflectance DR = SCE
(2) Cracks The polarizing plates prepared in the Examples and Comparative Examples were subjected to a thermal cycle (thermal shock) test at 200 cycles of -40 ° C to 85 ° C. Regarding the occurrence of cracks after the test, the length of the cracks was measured using an image magnified with an optical microscope. The maximum length of the observed crack was used as an evaluation index. Specifically, when the maximum length of the crack is less than 150 μm, it is evaluated as “good”, and when it is 150 μm or more, it is evaluated as “bad”.
>實施例1>
依常規方法，製出從視辨側起依序具有表面保護薄膜(48μm)/硬塗層(5μm)/環烯烴系保護薄膜(47μm)/偏光件(5μm)/環烯烴系保護薄膜(24μm)/黏著劑層(20μm)/分離件之構成的視辨側偏光板。將所製得之偏光板沖裁成類似圖3之形狀(概略尺寸為142.0mm×66.8mm且四隅之R為6.25mm)，並疊合多片經沖裁之偏光板而製成工件(總厚度約10mm)。將所製得之工件以鉗夾(夾具)夾住，並在此狀態下藉由端銑刀加工來切削周緣部，而製得如圖3所示之經切削加工之偏光板。端銑刀的切削刃係使用燒結鑽石之物，HV硬度為10000。又，端銑刀的刃數為2片，且扭轉角為0°。又，端銑刀之進給速度(切削直線部時之進給速度)為1500mm/分鐘，旋轉數為15000rpm，且切削次數為2次(第1次0.1mm，第2次0.2mm，切削餘量0.3mm)。> Example 1>
According to a conventional method, a surface protective film (48 μm), a hard coat layer (5 μm), a cycloolefin-based protective film (47 μm), a polarizer (5 μm), and a cycloolefin-based protective film (24 μm) are sequentially formed from the viewing side. ) / Adhesive layer (20 μm) / Separator. The obtained polarizing plate was punched into a shape similar to that of FIG. 3 (the approximate size is 142.0mm × 66.8mm and the R of the four corners was 6.25mm), and a plurality of punched polarizing plates were laminated to make a workpiece (total Thickness of about 10mm). The obtained workpiece was clamped with a clamp (clamp), and the peripheral portion was cut by an end mill in this state, and a polarizing plate subjected to cutting processing as shown in FIG. 3 was obtained. The cutting edge of the end mill is made of sintered diamond and has an HV hardness of 10,000. The number of edges of the end mill is two, and the twist angle is 0 °. The feed speed of the end mill (feed speed when cutting the straight part) is 1500 mm / minute, the number of rotations is 15000 rpm, and the number of cuts is 2 (0.1 mm for the first time, 0.2 mm for the second time, and 0.3mm).
將最後製得之經切削加工之偏光板供於上述(1)及(2)之評估。將結果列於表1。The final produced polarized plate was subjected to the above evaluations (1) and (2). The results are shown in Table 1.
>實施例2~8及比較例1>
除了將切削加工的條件變更成表1所示外，依與實施例1相同方式而製得如圖3所示之經切削加工之偏光板。將所製得之偏光板供於上述(1)及(2)之評估。將結果列於表1。> Examples 2 to 8 and Comparative Example 1>
A cutting-processed polarizing plate as shown in FIG. 3 was obtained in the same manner as in Example 1 except that the conditions of the cutting process were changed to those shown in Table 1. The obtained polarizing plate was used for the evaluation of (1) and (2) above. The results are shown in Table 1.
>實施例9>
端銑刀之切削刃使用超硬合金製之物(HV硬度：2050)且將切削加工之條件變更成如表1所示，除此之外依與實施例1相同方式而製得如圖3所示之經切削加工之偏光板。將所製得之偏光板供於上述(1)及(2)之評估。將結果列於表1。> Example 9>
The cutting edge of the end mill is made of cemented carbide (HV hardness: 2050), and the cutting conditions are changed as shown in Table 1. Except for this, the same manner as in Example 1 is used to obtain the figure 3 The machined polarizer shown. The obtained polarizing plate was used for the evaluation of (1) and (2) above. The results are shown in Table 1.
>實施例10～16及比較例2~5>
除了將切削加工的條件變更成表1所示外，依與實施例9相同方式而製得如圖3所示之經切削加工之偏光板。將所製得之偏光板供於上述(1)及(2)之評估。將結果列於表1。> Examples 10 to 16 and Comparative Examples 2 to 5>
Except that the conditions of the cutting process were changed to those shown in Table 1, a cutting-processed polarizing plate as shown in FIG. 3 was obtained in the same manner as in Example 9. The obtained polarizing plate was used for the evaluation of (1) and (2) above. The results are shown in Table 1.
>實施例17>
依常規方法，製出從背面側起依序具有表面保護薄膜(48μm)/增亮薄膜(30μm)/黏著劑層(12μm)/偏光件(5μm)/丙烯酸系保護薄膜(20μm)/黏著劑層(20μm)/分離件之構成的背面側偏光板。除了使用該偏光板及將切削加工的條件變更成表1所示外，依與實施例1相同方式而製得如圖3所示之經切削加工之偏光板。將所製得之偏光板供於上述(1)及(2)之評估。將結果列於表1。> Example 17>
According to a conventional method, a surface protective film (48 μm), a brightness enhancement film (30 μm), an adhesive layer (12 μm), a polarizer (5 μm), an acrylic protective film (20 μm), and an adhesive are sequentially formed from the back side. Layer (20 μm) / separator. Except that the polarizing plate was used and the conditions for cutting processing were changed to those shown in Table 1, a cutting-processed polarizing plate as shown in FIG. 3 was obtained in the same manner as in Example 1. The obtained polarizing plate was used for the evaluation of (1) and (2) above. The results are shown in Table 1.
>實施例18~28及比較例6>
除了將切削加工的條件變更成表1所示外，依與實施例17相同方式而製得如圖3所示之經切削加工之偏光板。將所製得之偏光板供於上述(1)及(2)之評估。將結果列於表1。> Examples 18 to 28 and Comparative Example 6>
Except that the conditions of the cutting process were changed to those shown in Table 1, a cutting-processed polarizing plate as shown in FIG. 3 was obtained in the same manner as in Example 17. The obtained polarizing plate was used for the evaluation of (1) and (2) above. The results are shown in Table 1.
[表1]
[Table 1]
>評估>
由表1明顯可知，根據本發明之實施例，熱循環試驗後之裂痕有受到抑制。>Evaluation>
It is clear from Table 1 that according to the embodiment of the present invention, cracks after the thermal cycle test are suppressed.
產業上之可利用性
本發明之經切削加工之樹脂片材適宜用作光學薄膜。光學薄膜(尤其是偏光板)可適宜用於以個人電腦(PC)及平板電腦終端為代表的矩形之影像顯示部、及/或以汽車之儀表面板及智慧型手錶為代表的異形之影像顯示部。Industrial Applicability The cut-processed resin sheet of the present invention is suitable for use as an optical film. Optical films (especially polarizing plates) are suitable for rectangular image display sections represented by personal computer (PC) and tablet terminal, and / or special-shaped image displays represented by automobile instrument panels and smart watches. unit.
1‧‧‧工件1‧‧‧Workpiece
1a、1b、1c、1d…外周面(切削面) 1a, 1b, 1c, 1d ... outer peripheral surface (cutting surface)
20‧‧‧切削機構 20‧‧‧Cutting mechanism
21‧‧‧旋轉軸 21‧‧‧rotation axis
22‧‧‧切削刃 22‧‧‧ cutting edge
22a‧‧‧刀鋒 22a‧‧‧Blade
22b‧‧‧前刀面 22b‧‧‧Front Face
22c‧‧‧後刀面 22c‧‧‧flank
圖1係在將本發明之一實施形態之樹脂片材積層成預定厚度之狀態下觀察切削端面之透射光的狀態而得之照片。FIG. 1 is a photograph obtained by observing a state of transmitted light at a cutting end face in a state where a resin sheet according to an embodiment of the present invention is laminated to a predetermined thickness.
圖2係在將本發明之實施形態之範圍外的樹脂片材積層成預定厚度之狀態下觀察切削端面之透射光的狀態而得之照片。 FIG. 2 is a photograph obtained by observing a state of transmitted light of a cutting end face in a state where a resin sheet outside a range of an embodiment of the present invention is laminated to a predetermined thickness.
圖3係顯示本發明經切削加工之樹脂片材之形狀之一例的概略俯視圖。 FIG. 3 is a schematic plan view showing an example of the shape of the resin sheet subjected to cutting processing according to the present invention.
圖4係用以說明本發明樹脂片材之切削加工之一例的概略立體圖。 Fig. 4 is a schematic perspective view for explaining an example of cutting processing of the resin sheet of the present invention.
圖5係用以說明本發明樹脂片材之製造方法中切削加工所用切削機構之一例的概略立體圖。 FIG. 5 is a schematic perspective view for explaining an example of a cutting mechanism used for cutting in the method of manufacturing a resin sheet of the present invention.
圖6中，圖6(a)係用以說明本發明樹脂片材之製造方法中切削加工所用切削機構之另一例從軸方向觀看之概略截面圖；圖6(b)係圖6(a)之切削機構的概略立體圖。 In FIG. 6, FIG. 6 (a) is a schematic cross-sectional view illustrating another example of a cutting mechanism used for cutting in the method for manufacturing a resin sheet of the present invention, as viewed from the axial direction; FIG. 6 (b) is FIG. A schematic perspective view of a cutting mechanism.
Claims (7)
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| JP7221256B2 (en) | 2020-09-14 | 2023-02-13 | 日東電工株式会社 | A polarizing plate, a polarizing plate with a retardation layer, and an image display device comprising the polarizing plate or the polarizing plate with the retardation layer |
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|---|---|---|---|---|
| JP3822655B2 (en) * | 1994-12-14 | 2006-09-20 | 三菱マテリアル神戸ツールズ株式会社 | Hard film and hard film coated member with excellent wear resistance |
| JPH0920951A (en) * | 1995-06-30 | 1997-01-21 | Nachi Fujikoshi Corp | Highly heat-resistant and highly tough diamond sintered compact and its production |
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| JP2000169733A (en) * | 1998-12-03 | 2000-06-20 | Minolta Co Ltd | Resin composition containing amphoteric ion group, and water-base ink |
| FR2842416B1 (en) * | 2002-07-19 | 2004-12-17 | Oreal | COSMETIC COMPOSITION |
| JP4401267B2 (en) * | 2004-10-04 | 2010-01-20 | 富士フイルム株式会社 | Inkjet recording medium |
| JP2007187781A (en) | 2006-01-12 | 2007-07-26 | Sumitomo Chemical Co Ltd | Method for manufacturing optical film product |
| JP4954662B2 (en) * | 2006-01-27 | 2012-06-20 | 日東電工株式会社 | Cutting method and manufacturing method of sheet-like member |
| US7604381B2 (en) * | 2007-04-16 | 2009-10-20 | 3M Innovative Properties Company | Optical article and method of making |
| KR101157444B1 (en) * | 2007-07-06 | 2012-06-22 | 닛토덴코 가부시키가이샤 | Polarization plate |
| JP2011197220A (en) * | 2010-03-18 | 2011-10-06 | Reiko Co Ltd | Light diffusing reflection film |
| EP2925289B1 (en) * | 2012-11-29 | 2018-05-02 | Unilever Plc. | Structured liquids containing reflective particles |
| CN104884040B (en) * | 2012-11-29 | 2017-11-10 | 荷兰联合利华有限公司 | Structuring liquid comprising reflection grain |
| CN105073355B (en) * | 2013-03-27 | 2018-04-20 | 三菱瓦斯化学株式会社 | The machining cover plate and its cutting working method of fiber reinforced composite material or metal |
| JP6437230B2 (en) * | 2013-09-04 | 2018-12-12 | 東友ファインケム株式会社Ｄｏｎｇｗｏｏ Ｆｉｎｅ−Ｃｈｅｍ Ｃｏ．， Ｌｔｄ． | Manufacturing method of end-face processed polarizing plate |
| CN106112282A (en) * | 2016-07-13 | 2016-11-16 | 京东方科技集团股份有限公司 | A kind of for CO2the decision method of the crackle of cut and system |
| JP6899721B2 (en) * | 2016-07-22 | 2021-07-07 | 日東電工株式会社 | Polarizing plate manufacturing method and its manufacturing equipment |
| JP2018030901A (en) * | 2016-08-22 | 2018-03-01 | 東レ株式会社 | Polyester film |
| KR102547107B1 (en) | 2016-08-23 | 2023-06-26 | 에스케이하이닉스 주식회사 | Memory device and system including the same |
-
2018
- 2018-04-27 JP JP2018086481A patent/JP7255974B2/en active Active
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2019
- 2019-04-03 CN CN201980027734.XA patent/CN112005142B/en active Active
- 2019-04-03 WO PCT/JP2019/014850 patent/WO2019208138A1/en active Application Filing
- 2019-04-03 KR KR1020207029658A patent/KR20210002485A/en not_active Application Discontinuation
- 2019-04-15 TW TW108113043A patent/TWI803617B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TWI803617B (en) | 2023-06-01 |
| CN112005142A (en) | 2020-11-27 |
| KR20210002485A (en) | 2021-01-08 |
| JP7255974B2 (en) | 2023-04-11 |
| CN112005142B (en) | 2023-05-02 |
| JP2019191464A (en) | 2019-10-31 |
| WO2019208138A1 (en) | 2019-10-31 |
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