TWI821291B - End mill for optical film cutting and method for manufacturing optical film using the end mill - Google Patents
End mill for optical film cutting and method for manufacturing optical film using the end mill Download PDFInfo
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- TWI821291B TWI821291B TW108116901A TW108116901A TWI821291B TW I821291 B TWI821291 B TW I821291B TW 108116901 A TW108116901 A TW 108116901A TW 108116901 A TW108116901 A TW 108116901A TW I821291 B TWI821291 B TW I821291B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 142
- 239000012788 optical film Substances 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 64
- 239000010408 film Substances 0.000 claims description 39
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract description 13
- 230000003287 optical effect Effects 0.000 abstract description 5
- 239000010409 thin film Substances 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 13
- 238000011156 evaluation Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- 230000002093 peripheral effect Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000003754 machining Methods 0.000 description 8
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 7
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 150000001925 cycloalkenes Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Polarising Elements (AREA)
- Milling Processes (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Turning (AREA)
Abstract
提供一種在能夠進行光學薄膜之切削加工的情況下，抑制裂隙、黃帶、缺膠及起毛的端銑刀。本發明之光學薄膜切削用端銑刀具有以旋轉軸為中心而旋轉的主體、及從主體突出而構成為最外徑的切削刀刃，切削刀刃的螺旋角為0°，斜角為5~45°。本發明之光學薄膜的製造方法包含使用上述之光學薄膜切削用端銑刀來切削加工光學薄膜之端面的步驟。Provided is an end mill capable of cutting optical films while suppressing cracks, yellow bands, lack of glue and fluffing. The end mill for cutting optical thin films of the present invention has a main body that rotates around a rotation axis, and a cutting blade protruding from the main body to form an outermost diameter. The cutting blade has a helix angle of 0° and a bevel angle of 5 to 45. °. The manufacturing method of the optical film of the present invention includes the step of cutting the end surface of the optical film using the above-mentioned end mill for cutting optical films.
Description
發明領域 本發明是有關於一種光學薄膜切削用端銑刀及使用該端銑刀之光學薄膜的製造方法。Field of invention The present invention relates to an end mill for cutting optical films and a manufacturing method of optical films using the end mill.
發明背景 已知有將光學薄膜(例如偏光板)的端面切削加工的情形。在這樣的切削加工中，有使用切削工具的情況，前述切削工具是構成為切削刀刃朝旋轉軸的方向(例如與旋轉軸平行地)延伸(參照例如專利文獻1)。但是，根據使用了這樣的切削工具的切削加工，有以下問題：(i)容易在光學薄膜產生裂隙；(ii)容易因摩擦而變色(容易產生所謂的黃帶(yellow band))；(iii)在光學薄膜存在接著層(例如接著劑層、黏著劑層)的情況下，容易發生缺膠(接著層的接著劑或黏著劑被切削刀刮下而缺乏的情形)；及(iv)容易發生起毛(切削不完全)。 先前技術文獻 專利文獻Background of the invention It is known that the end surface of an optical film (for example, a polarizing plate) is cut. In such cutting processing, a cutting tool may be used in which the cutting edge extends in the direction of the rotation axis (for example, parallel to the rotation axis) (see, for example, Patent Document 1). However, cutting processes using such cutting tools have the following problems: (i) cracks are easily generated in the optical film; (ii) discoloration is easily caused by friction (so-called yellow bands are easily generated); (iii) ) In the case where the optical film has an adhesive layer (such as an adhesive layer, an adhesive layer), glue shortage may easily occur (the adhesive or adhesive of the adhesive layer is scraped off by a cutting knife and is lacking); and (iv) It is easy to Fuzzing occurs (incomplete cutting). Prior technical literature patent documents
專利文獻1：日本專利特開2015-72453號公報Patent Document 1: Japanese Patent Application Publication No. 2015-72453
發明概要 發明欲解決之課題 本發明是為了解決上述以往的課題而作成之發明，其主要目的在於提供一種在進行光學薄膜的切削加工的情況下，可以抑制裂隙、黃帶、缺膠及起毛的端銑刀。 用以解決課題之手段Summary of the invention The problem to be solved by the invention The present invention was made to solve the above-mentioned conventional problems, and its main object is to provide an end mill that can suppress cracks, yellow bands, glue shortage, and fluffing when cutting optical films. means to solve problems
本發明之光學薄膜切削用端銑刀具有以旋轉軸為中心而旋轉的主體、及從該主體突出而構成為最外徑的切削刀刃，該切削刀刃的螺旋角為0°，斜角為5~45°。 在1個實施形態中，上述光學薄膜切削用端銑刀為：上述切削刀刃的隙角為5°~30°。 在1個實施形態中，上述光學薄膜切削用端銑刀為：上述切削刀刃的刀尖角為45°以上。在其他的實施形態中，上述光學薄膜切削用端銑刀為：上述刀尖角為55°以上。在其他的實施形態中，上述光學薄膜切削用端銑刀為：上述刀尖角為65°以下。 在1個實施形態中，上述光學薄膜切削用端銑刀為：外徑小於10mm。 在1個實施形態中，上述切削刀刃包含燒結鑽石。 在1個實施形態中，上述光學薄膜切削用端銑刀為：切削之光學薄膜包含偏光件、黏著劑層、表面保護薄膜及分隔件(separator)，且分隔件的剝離力比表面保護薄膜的剝離力更小。 根據本發明之其他方面，可提供一種光學薄膜的製造方法。此製造方法包含使用上述之光學薄膜切削用端銑刀來切削加工光學薄膜之端面的步驟。 在1個實施形態中，上述光學薄膜包含偏光板。 在1個實施形態中，上述偏光板包含偏光件、黏著劑層、表面保護薄膜及分隔件，且分隔件的剝離力比表面保護薄膜的剝離力更小。 發明效果The end mill for cutting optical thin films of the present invention has a main body that rotates around a rotation axis, and a cutting edge that protrudes from the main body and is configured as the outermost diameter. The cutting edge has a helix angle of 0° and a bevel angle of 5 ~45°. In one embodiment, the end mill for cutting optical thin films has a clearance angle of the cutting edge of 5° to 30°. In one embodiment, the end mill for optical film cutting has a cutting edge angle of 45° or more. In another embodiment, the end mill for optical film cutting has a cutting edge angle of 55° or more. In another embodiment, the end mill for optical film cutting has a cutting edge angle of 65° or less. In one embodiment, the end mill for optical film cutting has an outer diameter of less than 10 mm. In one embodiment, the cutting edge includes sintered diamond. In one embodiment, the above-mentioned end mill for cutting optical films is: the optical film to be cut includes a polarizer, an adhesive layer, a surface protection film and a separator, and the peeling force of the separator is greater than that of the surface protection film. Less peeling force. According to other aspects of the present invention, a method for manufacturing an optical film can be provided. The manufacturing method includes the step of using the above-mentioned end mill for optical film cutting to cut the end surface of the optical film. In one embodiment, the optical film includes a polarizing plate. In one embodiment, the above-mentioned polarizing plate includes a polarizer, an adhesive layer, a surface protection film and a separator, and the peeling force of the separator is smaller than the peeling force of the surface protection film. Invention effect
根據本發明，在切削刀刃之螺旋角為0°的光學薄膜切削用端銑刀中，可以藉由將切削刀刃之斜角設為預定範圍，而在進行光學薄膜之切削加工的情況下，抑制裂隙、黃帶、缺膠及起毛。According to the present invention, in an end mill for cutting optical films in which the helix angle of the cutting edge is 0°, by setting the bevel angle of the cutting edge to a predetermined range, when performing cutting processing of optical films, it is possible to suppress Cracks, yellow bands, lack of glue and fluffing.
用以實施發明之形態 以下，雖然參照圖式來說明本發明之具體的實施形態，但本發明並非限定於這些實施形態。再者，為了易於觀看而將圖式示意地顯示，此外，圖式中的長度、寬度、厚度等的比例、以及角度等是與實際有所差異的。Form used to implement the invention Hereinafter, specific embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments. Note that the drawings are schematically displayed for ease of viewing, and the proportions, angles, etc. of length, width, thickness, etc. in the drawings are different from actual ones.
A.光學薄膜切削用端銑刀 圖1(a)是用於說明本發明的1個實施形態之光學薄膜切削用端銑刀(以下，簡稱為端銑刀)的構造之從軸方向觀看的概略平面圖；圖1(b)是圖1(a)之端銑刀的概略立體圖。圖示例之端銑刀100具有：以朝鉛直方向(工件200之積層方向，工件為積層有光學薄膜的切削對象物，細節將後述)延伸的旋轉軸22為中心而旋轉的主體20、及從主體20突出而構成為最外徑的切削刀刃10。端銑刀代表性的是直端銑刀(straight end mill)。此外，在本發明之實施形態中，切削刀刃10的螺旋角為0°。只要是這樣的構成，即可以良好地進行光學薄膜的切削。更詳細來說，在使用具有螺旋角的切削刀刃來進行切削(例如異形加工或非直線加工)的情況下，而有切削面從橫方向看成為錐狀的情況時，可以藉由使用螺旋角為0°的切削刀刃，來抑制切削面成為錐狀的情形。特別是，在使用小徑的端銑刀來對光學薄膜進行細微的非直線加工(異形加工)的情況下能夠得到顯著的效果。再者，在本說明書中「螺旋角為0°」是指刀刃尖端10a實質上在與旋轉軸22平行的方向上延伸，換言之，是指刀刃未相對於旋轉軸扭轉之情形。再者，「0°」是指實質上為0°的意思，也包含因加工誤差等而扭轉些微的角度之情況。A. End mill for optical film cutting 1(a) is a schematic plan view viewed from the axial direction for explaining the structure of an end mill for optical film cutting (hereinafter simply referred to as an end mill) according to one embodiment of the present invention; FIG. 1(b) is a schematic plan view showing Figure 1(a) is a schematic perspective view of the end mill. The end mill 100 of the illustrated example has a main body 20 that rotates around a rotation axis 22 extending in the vertical direction (the lamination direction of the workpiece 200, which is a cutting object on which an optical film is laminated, details of which will be described later), and The cutting edge 10 protrudes from the main body 20 and is configured as the outermost diameter. The representative end mill is a straight end mill. Furthermore, in the embodiment of the present invention, the helix angle of the cutting edge 10 is 0°. With such a configuration, the optical film can be favorably cut. More specifically, when a cutting edge with a helix angle is used for cutting (such as special-shaped machining or non-linear machining), and the cutting surface becomes tapered when viewed from the transverse direction, the helix angle can be used. The cutting edge is 0° to prevent the cutting surface from becoming tapered. In particular, a remarkable effect can be obtained when using a small-diameter end mill to perform fine non-linear processing (special-shaped processing) on an optical film. Furthermore, in this specification, "the helix angle is 0°" means that the blade tip 10a extends substantially in a direction parallel to the rotation axis 22. In other words, it means that the blade is not twisted relative to the rotation axis. In addition, "0°" means substantially 0°, and also includes the case where the angle is slightly twisted due to processing errors, etc.
切削刀刃10可與主體20以一體方式來構成(也就是亦可從原材料切刻而構成端銑刀)，亦可作為單獨的個體來安裝到主體20。切削刀刃10代表性的是包含刀刃尖端10a、斜面10b及隙面10c。藉由斜面10b與主體20可規定出屑穴30(pocket)。隙面10c的平面視角形狀可如圖示例為屈曲狀(可具有2個隙面)，亦可是直線狀，亦可是平滑的曲線狀。隙面10c宜為已進行粗糙面化處理。作為粗糙面化處裡，可採用任意之適當的處理。代表例可列舉噴砂處裡。藉由對隙面施行粗糙面化處理，可抑制在光學薄膜包含接著層(例如接著劑層、黏著劑層)的情況下接著劑或黏著劑對切削刀刃的附著，結果，可抑制相黏(blocking)。在本說明書中，「相黏」是指在光學薄膜包含接著層的情況下，工件中的光學薄膜彼此因端面之接著劑或黏著劑而接著的現象，附著於端面的接著劑或黏著劑之切屑會促成光學薄膜彼此的接著。The cutting edge 10 can be integrally formed with the main body 20 (that is, it can also be cut from raw materials to form an end mill), or it can be mounted to the main body 20 as a separate entity. The cutting edge 10 typically includes an edge tip 10a, a bevel 10b and a clearance surface 10c. A pocket 30 can be defined by the inclined surface 10b and the main body 20. The plan view shape of the gap surface 10c may be a buckling shape (may have two gap surfaces) as shown in the figure, a straight line shape, or a smooth curve shape. The gap surface 10c is preferably roughened. As roughening treatment, any appropriate treatment can be used. Representative examples include sandblasting. By roughening the gap surface, it is possible to suppress the adhesion of the adhesive or adhesive to the cutting edge when the optical film contains an adhesive layer (such as an adhesive layer or a pressure-sensitive adhesive layer). As a result, mutual adhesion ( blocking). In this specification, "adhesion" refers to the phenomenon that when the optical film contains an adhesive layer, the optical films in the workpiece are adhered to each other due to the adhesive or adhesive on the end surface. The adhesive or adhesive attached to the end surface Chips promote the adhesion of optical films to each other.
在本發明的實施形態中，切削刀刃10的斜角α為5°~45°，較佳為5°~30°。只要斜角α在如此範圍內，即可以擔保刀刃的銳利度，並適當地抑制切削加工時的阻力，並且，可以將屑穴30設為適當的大小而良好地排出切削碎屑。其結果，可以良好地抑制光學薄膜之裂隙及黃帶，此外，在光學薄膜具有接著層的情況下可以良好地抑制缺膠。再者，若斜角α過大時，特別是在將切削刀刃作為單獨的個體來安裝到主體的情況下，會有切削刀刃(最終而言為端銑刀)的製作本身變得較困難的情況。切削刀刃10的隙角β宜為5°~30°，較佳為5°~25°。只要隙角β在這樣的範圍內，即可以防止隙面10c與工件200的接觸，而可以適當地抑制切削加工時的阻力。此外，可以防止刀尖角γ變得過小的情形。其結果，可以良好地抑制光學薄膜之裂隙及黃帶，此外，在光學薄膜具有接著層的情況下可以良好地抑制缺膠。除此以外，還可以增加切削刀刃的壽命。切削刀刃10的刀尖角γ宜為45°以上，較佳為55°以上。只要刀尖角γ在這樣的範圍內，即可以增加切削刀刃的壽命。若考慮斜角α及隙角β，刀尖角γ宜為小於85°，較佳為80°以下，更佳為75°以下。在別的實施形態中，刀尖角γ為65°以下。只要刀尖角γ在這樣的範圍內，即可以既維持切削刀刃的良好的壽命(抑制刀刃尖端的破損)，並且抑制起毛的發生。在1個實施形態中，斜角α的範圍宜為5°~15°，隙角β的範圍宜為15°~25°，刀尖角γ的範圍宜為55°~65°。再者，在本說明書中「斜角α」是連結刀刃尖端10a及旋轉軸22的直線與斜面10b所形成的角度；「隙角β」是工件200的切削面與隙面10c所形成的角度；「刀尖角γ」是將刀刃尖端10a作為頂點而規定的角度，且是從下述的公式所計算出的角度：90°-斜角α-隙角β。In the embodiment of the present invention, the bevel angle α of the cutting edge 10 is 5° to 45°, preferably 5° to 30°. As long as the bevel angle α is within this range, the sharpness of the cutting edge can be ensured, resistance during cutting can be appropriately suppressed, and the chip pocket 30 can be set to an appropriate size to discharge cutting debris well. As a result, cracks and yellow bands in the optical film can be effectively suppressed. In addition, when the optical film has an adhesive layer, glue shortage can be effectively suppressed. Furthermore, if the bevel angle α is too large, especially when the cutting edge is attached to the main body as a separate entity, the production of the cutting edge (ultimately, the end mill) itself may become difficult. . The clearance angle β of the cutting edge 10 is preferably 5° to 30°, preferably 5° to 25°. As long as the gap angle β is within this range, contact between the gap surface 10c and the workpiece 200 can be prevented, and resistance during cutting can be appropriately suppressed. In addition, the tool tip angle γ can be prevented from becoming too small. As a result, cracks and yellow bands in the optical film can be effectively suppressed. In addition, when the optical film has an adhesive layer, glue shortage can be effectively suppressed. In addition, the life of the cutting edge can be increased. The cutting edge angle γ of the cutting edge 10 is preferably 45° or more, preferably 55° or more. As long as the tool tip angle γ is within this range, the life of the cutting edge can be increased. Taking the bevel angle α and clearance angle β into consideration, the tool tip angle γ is preferably less than 85°, preferably less than 80°, and more preferably less than 75°. In another embodiment, the cutting edge angle γ is 65° or less. As long as the cutting edge angle γ is within such a range, it is possible to suppress the occurrence of fluff while maintaining a good life of the cutting edge (suppressing breakage of the cutting edge tip). In one embodiment, the bevel angle α is preferably in the range of 5° to 15°, the clearance angle β is in the range of 15° to 25°, and the tool tip angle γ is in the range of 55° to 65°. Furthermore, in this specification, "bevel angle α" is the angle formed by the straight line connecting the blade tip 10a and the rotation axis 22 and the inclined surface 10b; "gap angle β" is the angle formed by the cutting surface of the workpiece 200 and the gap surface 10c "Blade tip angle γ" is an angle defined with the blade tip 10a as the vertex, and is an angle calculated from the following formula: 90°-bevel angle α-gap angle β.
作為端銑刀的刀刃數，可因應於目的而採用任意之適當的刀刃數。刀刃數可如圖示例為1刃，亦可為2刃，亦可為3刃以上。較佳的是，刀刃數為1刃~3刃。只要是這樣的構成，由於可適當地確保切削刀刃彼此的間隔，所以可以良好地排出切削碎屑。更佳的是，刀刃數為2刃。只要是這樣的構成，即可以確保切削刀刃的剛性，並且確保屑穴，而良好地排出切削碎屑。 As the number of blades of the end mill, any appropriate number of blades can be used depending on the purpose. The number of blades can be 1 blade as shown in the figure, 2 blades, or 3 or more blades. Preferably, the number of blades is 1 to 3 blades. With such a configuration, the distance between the cutting blades can be appropriately ensured, so that the cutting chips can be discharged satisfactorily. Even better, the number of blades is 2. With such a configuration, the rigidity of the cutting edge is ensured, a chip pocket is ensured, and cutting chips can be discharged satisfactorily.
端銑刀的刀刃厚度δ宜為1.5mm以下，較佳為1.2mm以下，更佳為1.0mm以下。厚度的下限宜為0.3mm，較佳可為0.6mm。藉由將刀刃的厚度設在這樣的範圍，可維持切削的鋒利程度。此外，可以藉由調整上述刀尖角度，而兼顧良好的刀具壽命、及良好的切削的鋒利程度。 The blade thickness δ of the end mill is preferably 1.5 mm or less, preferably 1.2 mm or less, and more preferably 1.0 mm or less. The lower limit of the thickness is preferably 0.3mm, preferably 0.6mm. By setting the thickness of the blade within this range, the sharpness of the cutting can be maintained. In addition, by adjusting the above-mentioned tool tip angle, both good tool life and good cutting sharpness can be achieved.
端銑刀的外徑宜為小於10mm，較佳為3mm~9mm，更佳為4mm~7mm。根據本發明的實施形態，在例如使用了這樣的小徑的端銑刀之細微的非直線加工(異形加工)中，可以良好地抑制光學薄膜的裂隙及黃帶，此外，在光學薄膜具有接著層的情況下可以良好地抑制缺膠。再者，在本說明書中，「端銑刀的外徑」是指從旋轉軸22到刀刃尖端10a為止的距離乘以2倍之值。 The outer diameter of the end mill should be less than 10mm, preferably 3mm~9mm, and more preferably 4mm~7mm. According to the embodiment of the present invention, for example, in fine non-linear machining (special-shaped machining) using such a small-diameter end mill, cracks and yellow stripes in the optical film can be well suppressed, and in addition, the optical film has an adhesive In the case of layers, the lack of glue can be well suppressed. In addition, in this specification, "the outer diameter of an end mill" means the distance from the rotation axis 22 to the blade tip 10a multiplied by 2 times.
在1個實施形態中，切削刀刃10包含燒結鑽石。只要是這樣的構成，即可以良好地進行使用了如上述之小徑的端銑刀的細微的非直線加工(異形加工)。 In one embodiment, the cutting edge 10 contains sintered diamond. With such a configuration, fine non-linear machining (special-shaped machining) using an end mill with a small diameter as described above can be performed satisfactorily.
B.光學薄膜的製造方法 B. Manufacturing method of optical film
本發明的實施形態之光學薄膜的製造方法，包含使用 記載於上述A項的光學薄膜切削用端銑刀來切削加工光學薄膜之端面的步驟。更詳細來說，此製造方法包含將光學薄膜重疊複數片來形成工件的步驟、及藉由切削加工工件的外周面來切削加工構成工件的光學薄膜的端面的步驟。在1個實施形態中，切削加工包含非直線加工(異形加工)。 The manufacturing method of the optical film according to the embodiment of the present invention includes using The step of cutting the end face of the optical film using the end mill for cutting the optical film described in item A above. More specifically, the manufacturing method includes the steps of overlapping a plurality of optical films to form a workpiece, and the step of cutting the end surface of the optical film constituting the workpiece by cutting the outer peripheral surface of the workpiece. In one embodiment, the cutting process includes non-linear machining (special-shaped machining).
作為光學薄膜的具體例，可列舉偏光件、相位差薄膜、偏光板(代表性的是偏光件與保護薄膜的積層體)、觸控螢幕用導電性薄膜、表面處理薄膜、以及將這些因應於目的而適當地積層之積層體(例如反射防止用圓偏光板、觸控螢幕用附導電層偏光板)。在1個實施形態中，光學薄膜包含接著層(例如接著劑層、黏著劑層)。根據本發明之實施形態，即使是包含接著層的光學薄膜，亦可以抑制切削加工中的缺膠。 Specific examples of optical films include polarizers, retardation films, polarizing plates (typically, laminates of polarizers and protective films), conductive films for touch screens, surface-treated films, and films adapted to these A laminated body appropriately laminated for the purpose (for example, a circular polarizing plate for anti-reflection, a polarizing plate with a conductive layer for touch screens). In one embodiment, the optical film includes an adhesive layer (for example, an adhesive layer, an adhesive layer). According to the embodiment of the present invention, even an optical film including an adhesive layer can suppress adhesive loss during cutting.
在1個實施形態中，上述光學薄膜可為依照下述的順序而包含表面保護薄膜、偏光件、黏著劑及分隔件的附黏著劑層偏光板。在1個實施形態中，該分隔件的剝離力比該表面保護薄膜的剝離力更小。當對這樣的附黏著劑層偏光板使用端銑刀時，因為剝離力比表面保護薄膜更小的分隔件容易從端銑刀的刀刃退開，而有發生起毛的情況。但是，根據本發明的實施形態，可以藉由將上述刀尖角度設為55°~65°，而維持良好的切削之鋒利程度，並抑制分隔件側的起毛，且進一步實現切削刀刃之良好的壽命(抑制刀刃尖端的破損)。 In one embodiment, the optical film may be a polarizing plate with an adhesive layer including a surface protection film, a polarizer, an adhesive, and a separator in the following order. In one embodiment, the peeling force of the separator is smaller than the peeling force of the surface protection film. When an end mill is used for such a polarizing plate with an adhesive layer, the separator, which has a peeling force smaller than that of the surface protection film, is easily retracted from the edge of the end mill, which may cause fluffing. However, according to the embodiment of the present invention, by setting the above-mentioned cutting edge angle to 55° to 65°, it is possible to maintain good cutting sharpness, suppress fuzzing on the partition side, and further achieve good cutting edge sharpness. Lifespan (suppresses breakage of blade tip).
以下，針對作為光學薄膜之一例而採用了附黏著劑層偏光板的情況下的製造方法作說明。具體而言，是對如圖2所示之平面形狀的附黏著劑層偏光板的製造方法中的各個步驟進行說明。再者，光學薄膜並非限定於附黏著劑層偏光板、以及附黏著劑層偏光板的平面形狀並非限定於圖2的平面形狀之情形，對所屬技術領域的通常知識者來說是理所當然的。也就是說，本發明之製造方法可適用於任意的形狀之任意的光學薄膜。Hereinafter, a manufacturing method in the case of using a polarizing plate with an adhesive layer as an example of an optical film will be described. Specifically, each step in the method of manufacturing a planar polarizing plate with an adhesive layer as shown in FIG. 2 will be described. Furthermore, it is a matter of course for those of ordinary skill in the art that the optical film is not limited to the polarizing plate with the adhesive layer, and the planar shape of the polarizing plate with the adhesive layer is not limited to the planar shape in FIG. 2 . In other words, the manufacturing method of the present invention can be applied to any optical film of any shape.
B-1.工件的形成 圖3是用於說明光學薄膜的切削加工的概略立體圖，於本圖顯示有工件200。如圖3所示，可形成將光學薄膜(附黏著劑層偏光板)重疊複數片的工件200。由於附黏著劑層偏光板可藉由業界周知之慣用的方法來製造，所以省略該製造方法的詳細的說明。附黏著劑層偏光板在進行工件形成時，可代表性地切斷成任意之適當的形狀。具體而言，附黏著劑層偏光板可切斷成矩形形狀，亦可切斷成類似於矩形形狀的形狀，亦可切斷成因應於目的之適當的形狀(例如圓形)。在圖示例中，附黏著劑層偏光板是切斷成矩形形狀，且工件200具有相互對向的外周面(切削面)200a、200b、及與其等正交的外周面(切削面)200c、200d。工件200宜藉由夾持機構(未圖示)來從上下進行夾持。工件的總厚度宜為10mm~50mm，較佳是15mm~25mm，更佳是約20mm。若是這樣的厚度，即可防止因為由夾持機構所進行的按壓或是切削加工時的衝擊而造成的損傷。附黏著劑層偏光板是重疊成使工件成為像這樣的總厚度。構成工件的附黏著劑層偏光板的片數可為例如20片~100片。夾持機構(例如治具)可為以軟質材料所構成，亦可為以硬質材料所構成。在以軟質材料所構成的情況下，其硬度(JIS A)宜為60°~80°。當硬度過高時，會有殘留夾持機構的壓痕的情況。當硬度過低時，會因治具的變形而產生位置偏移，而有切削精度變得不足的情況。B-1. Formation of workpiece FIG. 3 is a schematic perspective view for explaining the cutting process of the optical film, and a workpiece 200 is shown in this figure. As shown in FIG. 3 , a workpiece 200 in which a plurality of optical films (polarizing plates with adhesive layers) are stacked can be formed. Since the polarizing plate with the adhesive layer can be manufactured by a conventional method well known in the industry, a detailed description of the manufacturing method is omitted. The polarizing plate with the adhesive layer can be typically cut into any appropriate shape when forming the workpiece. Specifically, the adhesive layer polarizing plate can be cut into a rectangular shape, a shape similar to a rectangular shape, or an appropriate shape (for example, a circle) according to the purpose. In the illustrated example, the adhesive layer polarizing plate is cut into a rectangular shape, and the workpiece 200 has mutually facing outer peripheral surfaces (cutting surfaces) 200a, 200b, and an outer peripheral surface (cutting surface) 200c orthogonal thereto. ,200d. The workpiece 200 is preferably clamped from top to bottom by a clamping mechanism (not shown). The total thickness of the workpiece should be 10mm~50mm, preferably 15mm~25mm, and more preferably about 20mm. Such a thickness can prevent damage caused by pressing by the clamping mechanism or impact during cutting. The polarizing plate with the adhesive layer is overlapped so that the workpiece becomes a total thickness like this. The number of adhesive layer polarizing plates constituting the workpiece may be, for example, 20 to 100 pieces. The clamping mechanism (such as a jig) can be made of soft material or hard material. When it is made of soft material, its hardness (JIS A) is preferably 60°~80°. When the hardness is too high, indentations of the clamping mechanism may remain. When the hardness is too low, positional deviation may occur due to deformation of the jig, resulting in insufficient cutting accuracy.
B-2.端銑刀加工 接著，藉由端銑刀100對工件200的外周面的預定的位置進行切削。端銑刀100代表性的是保持於工作機械(未圖示)，並以繞著端銑刀的旋轉軸的方式進行高速旋轉，以一邊朝交叉於旋轉軸的方向送出，一邊使切削刀刃抵接並切入工件200之外周面來使用。也就是說，代表性的是藉由使端銑刀的切削刀刃抵接並切入工件200的外周面來進行切削。在製作如圖2所示之平面視角形狀的附黏著劑層偏光板的情況下，是在工件200的外周的4個角落部形成倒角部200E、200F、200G、200H，且於連結倒角部200E及200H的外周面的中央部形成凹部200I。B-2. End mill processing Next, the end mill 100 is used to cut a predetermined position on the outer peripheral surface of the workpiece 200 . The end mill 100 is typically held on a machine tool (not shown), rotates at high speed around the rotation axis of the end mill, and is sent out in a direction intersecting the rotation axis while causing the cutting edge to contact the end mill. It is used by connecting and cutting into the outer peripheral surface of the workpiece 200. That is, cutting is typically performed by causing the cutting edge of the end mill to contact and cut into the outer peripheral surface of the workpiece 200 . When producing an adhesive layer polarizing plate with a plan view shape as shown in FIG. 2 , chamfers 200E, 200F, 200G, and 200H are formed at the four corners of the outer periphery of the workpiece 200, and the connecting chamfers are The recessed portion 200I is formed in the central portion of the outer peripheral surface of the portions 200E and 200H.
針對工件200的切削加工詳細地作說明。首先，如圖4(a)所示，將圖2之將形成倒角部200E的部分進行倒角加工，接著，如圖4(b)~圖4(d)所示，對將形成倒角部200F、200G及200H的部分依序進行倒角加工。最後，如圖4(e)所示，切削形成凹部200I。再者，在圖示例中雖然是按照此順序來形成倒角部200E、200F、200G及200H、以及凹部200I，但這些只要以任意之適當的順序來形成即可。The cutting process of the workpiece 200 will be described in detail. First, as shown in FIG. 4(a) , the part where the chamfer 200E is to be formed in FIG. 2 is chamfered. Then, as shown in FIGS. 4(b) to 4(d) , the chamfering part is Parts 200F, 200G and 200H are chamfered in sequence. Finally, as shown in FIG. 4(e) , the recessed portion 200I is formed by cutting. Furthermore, in the illustrated example, the chamfered portions 200E, 200F, 200G and 200H and the recessed portion 200I are formed in this order, but these may be formed in any appropriate order.
切削加工的條件可因應於附黏著劑層偏光板的構成、所期望的形狀等而適當地設定。例如，端銑刀的旋轉速度(旋轉數)宜小於25000rpm，較佳是22000rpm以下，更佳是20000rpm以下。端銑刀的旋轉速度的下限可為例如10000rpm。又，例如，端銑刀的進給速度宜為500mm/分鐘~10000mm/分鐘，較佳為500mm/分鐘~2500mm/分鐘，更佳為800mm/分鐘~1500mm/分鐘。端銑刀的切削處之切削數可為1次切削、2次切削、3次切削或其以上。The cutting conditions can be appropriately set according to the composition of the adhesive layer polarizing plate, the desired shape, and the like. For example, the rotation speed (number of revolutions) of the end mill is preferably less than 25,000 rpm, preferably 22,000 rpm or less, and more preferably 20,000 rpm or less. The lower limit of the rotation speed of the end mill may be, for example, 10,000 rpm. Also, for example, the feed speed of the end mill is preferably 500mm/min ~ 10000mm/min, preferably 500mm/min ~ 2500mm/min, more preferably 800mm/min ~ 1500mm/min. The number of cuts at the cutting point of the end mill can be 1 cut, 2 cuts, 3 cuts or more.
如以上地進行，可得到已切削加工之附黏著劑層偏光板。在圖示例中，可得到包含非直線加工之部分的附黏著劑層偏光板。 實施例By proceeding as above, a cut and processed polarizing plate with an adhesive layer can be obtained. In the illustrated example, an adhesive layer polarizing plate including a non-linear processing portion can be obtained. Example
以下，雖然是藉由實施例來具體地說明本發明，但本發明並非限定於這些實施例。再者，實施例中的評價項目是如以下所述。Hereinafter, although the present invention is specifically explained by using examples, the present invention is not limited to these examples. In addition, the evaluation items in the examples are as follows.
(1)裂隙 針對實施例及比較例所得到之附黏著劑層偏光板(構成工件之全部的附黏著劑層偏光板)，藉由目視來確認裂隙的產生狀況，並藉以下的基準來進行評價。再者，裂隙是觀察以光學顯微鏡所放大的影像。 ◎：未看到裂隙 ○：雖然看到些許裂隙，但其程度在實用上不成問題 ×：看到裂隙 (2)黃帶 針對實施例及比較例所得到之附黏著劑層偏光板(構成工件之全部的附黏著劑層偏光板)，是藉由目視來確認黃帶的產生狀況，並藉以下的基準來進行評價。再者，黃帶是觀察以光學顯微鏡所放大的影像。 ◎：看到黃帶 ○：雖然看到些許黃帶，但其程度在實用上不成問題 ×：看到黃帶 (3)缺膠 針對實施例及比較例所得到之附黏著劑層偏光板(構成工件之全部的附黏著劑層偏光板)，藉由目視來確認缺膠(接著層被切削刀刃刮下而缺乏的情形)之狀態，並藉以下的基準來進行評價。 ◎：未看到缺膠 ○：雖然看到些許缺膠，但其程度在實用上不成問題 ×：看到缺膠 (4)切削刀刃的壽命 確認實施例及比較例中所使用之切削刀刃的切削後的狀態。 ◎：刀刃上沒有傷痕或缺損，耐久性良好 ○：刀刃上看到些許傷痕 (5)起毛 將已在實施例及比較例中切削之工件以成束的狀態固定，並在螢光燈下的反射中觀察端部。包含已發生起毛的試樣的工件可以藉由目視來確認端面變色成白色之情形。藉由目視來確認在一束的工件之中變色成白色的部分的起毛的大小，並藉以下的基準來進行起毛的評價。 ◎：未看到起毛 ○：由於有非常輕微地變色成白色的部分，所以確認了起毛的大小，雖然看到些許起毛，但其程度在實用上不成問題 △：由於有稍微變色成白色的部分，所以確認了起毛的大小，雖然看到起毛，但是仍在基準範圍內 ×：看到起毛(1) Crack The occurrence of cracks in the adhesive layer polarizing plates (the entire adhesive layer polarizing plate constituting the workpiece) obtained in Examples and Comparative Examples was visually confirmed and evaluated based on the following criteria. Furthermore, the cracks are observed as magnified images using an optical microscope. ◎: No cracks seen ○: Although some cracks are seen, the extent is not a problem in practical terms. ×: Cracks are seen (2)yellow belt Regarding the adhesive layer polarizing plates obtained in Examples and Comparative Examples (the entire adhesive layer polarizing plate constituting the workpiece), the occurrence of yellow bands was visually confirmed and evaluated based on the following criteria. Furthermore, the yellow band is an image magnified by an optical microscope. ◎：See the yellow belt ○: Although some yellow bands are seen, the extent is not a practical problem ×: Yellow belt seen (3) Lack of glue For the adhesive layer polarizing plates obtained in Examples and Comparative Examples (the entire adhesive layer polarizing plate constituting the workpiece), the lack of adhesive (the adhesive layer was scraped off by the cutting blade) was visually confirmed. status and evaluate based on the following criteria. ◎: No glue shortage is seen ○: Although some glue is missing, the extent is not a problem in practical terms. ×: Missing glue is seen (4) Cutting edge life The state of the cutting edge used in the Examples and Comparative Examples after cutting was confirmed. ◎: There are no scratches or defects on the blade, and the durability is good. ○: Some scratches are seen on the blade (5)Fluffing The workpieces that had been cut in the Examples and Comparative Examples were fixed in a bundled state, and the ends were observed under reflection under a fluorescent lamp. Workpieces containing fluffed specimens can be visually confirmed to have their end surfaces discolored to white. The size of the fluff in the part that changes color to white among a bunch of workpieces is visually confirmed, and the fluff is evaluated based on the following criteria. ◎: No fluffing seen ○: Since there is a very slight discoloration to white, the size of the fluff is confirmed. Although some fluff is seen, the extent is not a problem in practical terms. △: Since there is a slightly changed color to white, the size of the fluff was confirmed. Although fluff was visible, it was still within the standard range. ×: Fuzzing is seen
>製造例1>附黏著劑層偏光板的製作 作為偏光件，所使用的是使其於長條狀的聚乙烯醇(PVA)系樹脂薄膜中含有碘，且在長邊方向(MD方向)上進行單軸延伸而得之薄膜(厚度12μm)。使光學功能薄膜(附帶電防止層COP薄膜)貼合於此偏光件的單側。再者，附帶電防止層COP薄膜是在環烯烴聚合物(COP)薄膜(25μm)形成有帶電防止層(5μm)的薄膜，且設成COP薄膜成為偏光件側來貼合。在所獲得的偏光件/COP薄膜/帶電防止層的積層體的帶電防止層側貼合有表面保護薄膜。另一方面，在該積層體的偏光件側貼合有環烯烴系樹脂的相位差薄膜(日本ZEON公司製，商品名稱「ZB-12」，面內相位差Re(550)＝50nm，厚度40μm)。此外，於相位差薄膜的外側形成黏著劑層(厚度20μm)，並在該黏著劑層貼合分隔件(separator)。如此進行，而製作出具有表面保護薄膜/帶電防止層/COP薄膜/偏光件/相位差薄膜/黏著劑層/分隔件之構成的附黏著劑層偏光板1。>Manufacture Example 1>Production of polarizing plate with adhesive layer As the polarizer, a long polyvinyl alcohol (PVA)-based resin film containing iodine and uniaxially stretched in the longitudinal direction (MD direction) was used (thickness: 12 μm). . An optically functional film (COP film with an electrostatic prevention layer) is bonded to one side of the polarizer. In addition, the COP film with an antistatic layer is a film in which an antistatic layer (5 μm) is formed on a cyclic olefin polymer (COP) film (25 μm), and the COP film is laminated on the polarizer side. A surface protection film was bonded to the antistatic layer side of the obtained laminate of polarizer/COP film/antistatic layer. On the other hand, a cycloolefin resin retardation film (manufactured by Japan ZEON Co., Ltd., trade name "ZB-12", in-plane retardation Re (550) = 50 nm, thickness 40 μm) was bonded to the polarizer side of the laminate. ). In addition, an adhesive layer (thickness 20 μm) was formed on the outside of the retardation film, and a separator was bonded to the adhesive layer. By proceeding in this manner, the adhesive layer polarizing plate 1 having the structure of surface protection film/antistatic layer/COP film/polarizer/retardation film/adhesive layer/separator is produced.
>製造例2>附黏著劑層偏光板的製作 與製造例1同樣地進行來製作偏光件，且在此偏光件的單側上貼合有亮度提升薄膜(3M公司製，商品名稱「DBEF」)。在所獲得的偏光件/亮度提升薄膜的亮度提升薄膜側貼合有表面保護薄膜。另一方面，在該積層體的偏光件側貼合有已進行過皂化處理之40μm厚的丙烯酸樹脂薄膜。此外，於丙烯酸樹脂薄膜的外側形成黏著劑層(厚度20μm)，且在該黏著劑層貼合有分隔件。如此進行，而製作出具有表面保護薄膜/亮度提升薄膜/偏光件/丙烯酸樹脂薄膜/黏著劑層/分隔件之構成的附黏著劑層偏光板2。>Manufacturing Example 2>Production of polarizing plate with adhesive layer A polarizer was produced in the same manner as in Production Example 1, and a brightness improvement film (manufactured by 3M Company, trade name "DBEF") was bonded to one side of the polarizer. A surface protection film is bonded to the brightness-enhancing film side of the obtained polarizer/brightness-enhancing film. On the other hand, a 40-μm-thick acrylic resin film that had been saponified was bonded to the polarizer side of the laminate. In addition, an adhesive layer (thickness 20 μm) was formed on the outside of the acrylic resin film, and a separator was bonded to the adhesive layer. By proceeding in this manner, the adhesive layer-attached polarizing plate 2 composed of a surface protection film/brightness enhancement film/polarizer/acrylic resin film/adhesive layer/separator is produced.
>實施例1> 將在製造例1中所獲得的附黏著劑層偏光板1沖切成5.7英吋尺寸(為縱140mm及橫65mm左右)，並將所沖切成的偏光板重疊複數片而形成工件(總厚度約20mm)。將所獲得的工件以用夾具(治具)夾持的狀態，藉由使用了螺旋角0°的端銑刀的切削加工，而於工件的外周的4個角落部形成倒角部，此外，於4個外周面當中的1個外周面的中央部形成凹部，而獲得如圖2所示的非直線加工之附黏著劑層偏光板。在此，端銑刀的刀刃數為1刃，外徑為5mm，且切削刀刃的斜角為5°、隙角為15°、刀尖角為70°。又，端銑刀的進給速度是1200mm/分鐘，旋轉速度是15000rpm。>Example 1> The adhesive layer polarizing plate 1 obtained in Production Example 1 was punched into a 5.7-inch size (approximately 140 mm in length and 65 mm in width), and a plurality of punched polarizing plates were stacked to form a workpiece (total Thickness is about 20mm). The obtained workpiece is held in a jig (jig) and is cut using an end mill with a helix angle of 0° to form chamfers at four corners of the outer circumference of the workpiece. In addition, A recess is formed in the center of one of the four outer peripheral surfaces to obtain a non-linearly processed adhesive layer polarizing plate as shown in Figure 2 . Here, the number of cutting edges of the end mill is 1, the outer diameter is 5 mm, the bevel angle of the cutting blade is 5°, the clearance angle is 15°, and the cutting edge angle is 70°. In addition, the feed speed of the end mill is 1200mm/min, and the rotation speed is 15000rpm.
將最終所獲得的非直線加工之附黏著劑層偏光板供上述(1)~(3)的評價使用。此外，對切削刀刃進行上述(4)的評價。此外，對切削後之附黏著劑層偏光板進行上述(5)的評價。將結果顯示於表1。The finally obtained non-linear processed adhesive layer polarizing plate was used for the evaluation of (1) to (3) above. In addition, the cutting edge was evaluated in (4) above. In addition, the above-mentioned (5) evaluation was performed on the polarizing plate with the adhesive layer after cutting. The results are shown in Table 1.
>實施例2~6及比較例1> 將端銑刀的切削刀刃的斜角、隙角及刀尖角設為除了如表1所示地變更以外，為與實施例1同樣地進行，而製作出非直線加工之附黏著劑層偏光板。將所獲得的非直線加工之附黏著劑層偏光板供上述(1)~(3)的評價使用。此外，對使用之切削刀刃進行上述(4)的評價。此外，對切削後之附黏著劑層偏光板進行上述(5)的評價。將結果顯示於表1。>Examples 2~6 and Comparative Example 1> Except for changing the bevel angle, clearance angle and tip angle of the cutting edge of the end mill as shown in Table 1, the process was carried out in the same manner as in Example 1, and a non-linear processing adhesive layer was produced. plate. The obtained non-linear processed polarizing plate with an adhesive layer was used for the evaluation of the above (1) to (3). In addition, the cutting edge used was evaluated in the above (4). In addition, the above-mentioned (5) evaluation was performed on the polarizing plate with the adhesive layer after cutting. The results are shown in Table 1.
>實施例7> 設為除了使用在製造例2中所獲得之附黏著劑層偏光板2以外皆與實施例1同樣地進行，而製作出如圖2所示之非直線加工的附黏著劑層偏光板。將所獲得的非直線加工之附黏著劑層偏光板供上述(1)~(3)的評價使用。此外，對使用之切削刀刃進行上述(4)的評價。此外，對切削後之附黏著劑層偏光板進行上述(5)的評價。將結果顯示於表1。>Example 7> The process was carried out in the same manner as Example 1 except that the adhesive layer polarizing plate 2 obtained in Production Example 2 was used, and a non-linear processing adhesive layer polarizing plate as shown in FIG. 2 was produced. The obtained non-linear processed polarizing plate with an adhesive layer was used for the evaluation of the above (1) to (3). In addition, the cutting edge used was evaluated in the above (4). In addition, the above-mentioned (5) evaluation was performed on the polarizing plate with the adhesive layer after cutting. The results are shown in Table 1.
>實施例8~12及比較例2> 將端銑刀的切削刀刃的斜角、隙角及刀尖角設為除了如表1所示地變更以外，為與實施例7同樣地進行，而製作出非直線加工之附黏著劑層偏光板。將所獲得的非直線加工之附黏著劑層偏光板供上述(1)~(3)的評價使用。此外，對使用之切削刀刃進行上述(4)的評價。此外，對切削後之附黏著劑層偏光板進行上述(5)的評價。將結果顯示於表1。>Examples 8~12 and Comparative Example 2> Except for changing the bevel angle, clearance angle, and tip angle of the cutting edge of the end mill as shown in Table 1, the process was carried out in the same manner as in Example 7, and a non-linear processing adhesive layer was produced. plate. The obtained non-linear processed polarizing plate with an adhesive layer was used for the evaluation of the above (1) to (3). In addition, the cutting edge used was evaluated in the above (4). In addition, the above-mentioned (5) evaluation was performed on the polarizing plate with the adhesive layer after cutting. The results are shown in Table 1.
>比較例3> 雖然嘗試了斜角為50°的端銑刀的製作，但未能製作出。>Comparative Example 3> Although attempts were made to produce an end mill with a bevel angle of 50°, it was not possible.
[表1]
>評價> 如從表1所清楚顯示地，根據本發明的實施例，可以藉由將端銑刀的切削刀刃的斜角設為預定範圍，而在光學薄膜(在此是附黏著劑層偏光板)的切削加工中，抑制裂隙、黃帶及缺膠。此外，藉由將斜角的下限設為預定值以上，可以使刀刃的銳利度更良好，作為結果，可以更良好地抑制裂隙、黃帶及缺膠(實施例1與實施例2~6的比較、及實施例7與實施例8~12的比較)。又，藉由將斜角的上限設為預定值以下，可以確保適當的尺寸的屑穴，作為結果，可以減少切削碎屑之摩擦並更加良好地抑制黃帶(實施例6與實施例2~5的比較、及實施例12與實施例8~11的比較)。此外，藉由將刀尖角設為預定值以上，可以使切削刀刃的壽命增長。此外，藉由將刀尖角設為預定值以下，可以讓切削的鋒利程度變得良好，作為結果，可以抑制起毛(實施例4~6與實施例1~3的比較、及實施例10~12與實施例7~9的比較)。此外，可以藉由將刀尖角設為預定範圍，而既維持起毛的抑制，並且滿足切削刀刃的良好的壽命(抑制刀刃尖端之破損)(實施例3~4與實施例1~2及5~6的比較、及實施例9~10與實施例7~8及11~12的比較)。 產業上之可利用性>Evaluation> As clearly shown from Table 1, according to embodiments of the present invention, the bevel angle of the cutting edge of the end mill can be set to a predetermined range. During cutting, it suppresses cracks, yellow bands and lack of glue. In addition, by setting the lower limit of the bevel angle to a predetermined value or more, the sharpness of the blade can be improved, and as a result, cracks, yellow bands, and glue shortage can be more effectively suppressed (Examples 1 and 2 to 6). Comparison, and comparison between Example 7 and Examples 8 to 12). In addition, by setting the upper limit of the bevel angle to a predetermined value or less, chip pockets of appropriate size can be ensured. As a result, friction of cutting chips can be reduced and yellow bands can be more effectively suppressed (Examples 6 and 2~ 5, and comparison between Example 12 and Examples 8 to 11). In addition, by setting the cutting edge angle to a predetermined value or more, the life of the cutting edge can be increased. In addition, by setting the cutting edge angle to a predetermined value or less, the sharpness of the cutting can be improved, and as a result, fluffing can be suppressed (Comparison of Examples 4 to 6 and Examples 1 to 3, and Examples 10 to 12 Comparison with Examples 7 to 9). In addition, by setting the cutting edge angle to a predetermined range, it is possible to maintain the suppression of fluff and satisfy the good life of the cutting edge (suppressing breakage of the cutting edge tip) (Examples 3 to 4 and Examples 1 to 2 and 5) Comparison of ~6, and comparison of Examples 9~10 and Examples 7~8 and 11~12). industrial availability
本發明之端銑刀是可適合地在光學薄膜的切削加工中使用。藉由本發明之端銑刀所切削加工的光學薄膜可使用於例如以汽車之儀表板或是智慧型手錶為代表之異形的圖像顯示部上。The end mill of the present invention can be suitably used for cutting optical films. The optical film processed by the end mill of the present invention can be used in special-shaped image display parts represented by automobile dashboards or smart watches.
α‧‧‧斜角 β‧‧‧隙角 γ‧‧‧刀尖角 δ‧‧‧刀刃厚度 10‧‧‧切削刀刃 10a‧‧‧刀刃尖端 10b‧‧‧斜面 10c‧‧‧隙面 20‧‧‧主體 22‧‧‧旋轉軸 30‧‧‧屑穴 100‧‧‧端銑刀 200‧‧‧工件 200a、200b、200c、200d‧‧‧外周面(切削面) 200E、200F、200G、200H‧‧‧倒角部 200I‧‧‧凹部 α‧‧‧Bevel angle β‧‧‧gap angle γ‧‧‧Blade tip angle δ‧‧‧Blade thickness 10‧‧‧Cutting blade 10a‧‧‧Blade tip 10b‧‧‧Incline 10c‧‧‧Gap surface 20‧‧‧Subject 22‧‧‧Rotation axis 30‧‧‧crumb hole 100‧‧‧End mill 200‧‧‧Workpieces 200a, 200b, 200c, 200d‧‧‧Outer peripheral surface (cutting surface) 200E, 200F, 200G, 200H‧‧‧Chamfer 200I‧‧‧Concave
圖1(a)是用於說明本發明的1個實施形態之光學薄膜切削用端銑刀的構造之從軸方向觀看的概略平面圖；圖1(b)是圖1(a)之光學薄膜切削用端銑刀的概略立體圖。 圖2是顯示藉由本發明的實施形態之使用光學薄膜切削用端銑刀之光學薄膜的製造方法所得到的非直線加工之光學薄膜的形狀之一例的概略平面圖。 圖3是用於說明本發明的實施形態之使用光學薄膜切削用端銑刀的光學薄膜的切削加工的概略立體圖。 圖4(a)~圖4(e)是說明本發明的實施形態之使用光學薄膜切削用端銑刀之光學薄膜的切削加工之一例即非直線性的切削加工之一連串的順序的概略平面圖。1(a) is a schematic plan view viewed from the axial direction for explaining the structure of an end mill for optical film cutting according to one embodiment of the present invention; FIG. 1(b) is the optical film cutting shown in FIG. 1(a) A schematic perspective view of an end mill. 2 is a schematic plan view showing an example of the shape of a non-linearly processed optical film obtained by the optical film manufacturing method using an end mill for optical film cutting according to the embodiment of the present invention. 3 is a schematic perspective view for explaining the cutting process of the optical film using the end mill for cutting the optical film according to the embodiment of the present invention. 4(a) to 4(e) are schematic plan views illustrating a series of procedures of a non-linear cutting process, which is an example of the optical film cutting process using an end mill for optical film cutting according to the embodiment of the present invention.
α‧‧‧斜角 α‧‧‧Bevel angle
β‧‧‧隙角 β‧‧‧gap angle
γ‧‧‧刀尖角 γ‧‧‧Blade tip angle
δ‧‧‧刀刃厚度 δ‧‧‧Blade thickness
10‧‧‧切削刀刃 10‧‧‧Cutting blade
10a‧‧‧刀刃尖端 10a‧‧‧Blade tip
10b‧‧‧斜面 10b‧‧‧Incline
10c‧‧‧隙面 10c‧‧‧Gap surface
20‧‧‧主體 20‧‧‧Subject
22‧‧‧旋轉軸 22‧‧‧Rotation axis
30‧‧‧屑穴 30‧‧‧crumb hole
100‧‧‧端銑刀 100‧‧‧End mill
200‧‧‧工件 200‧‧‧Workpieces
Claims (7)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2018-117679 | 2018-06-21 | ||
| JP2018117679 | 2018-06-21 | ||
| JP2019080282A JP2020001160A (en) | 2018-06-21 | 2019-04-19 | End mill for cutting optical film, and optical film manufacturing method using the same |
| JP2019-080282 | 2019-04-19 |
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| TW202000349A TW202000349A (en) | 2020-01-01 |
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| TW108116901A TWI821291B (en) | 2018-06-21 | 2019-05-16 | End mill for optical film cutting and method for manufacturing optical film using the end mill |
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| JP (1) | JP2020001160A (en) |
| CN (1) | CN112236259A (en) |
| TW (1) | TWI821291B (en) |
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| JP2022054169A (en) * | 2020-09-25 | 2022-04-06 | 日東電工株式会社 | Optical film having adhesive layer and picture display unit including optical film having adhesive layer |
| JP7366510B2 (en) * | 2022-03-14 | 2023-10-23 | 日東電工株式会社 | Composite cutting tool and method for manufacturing resin sheet using the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015072453A (en) * | 2013-09-04 | 2015-04-16 | 住友化学株式会社 | Method for manufacturing polarizing plate with processed end face |
| WO2015163408A1 (en) * | 2014-04-24 | 2015-10-29 | 帝人株式会社 | Machined carbon-fiber-reinforced resin product having end face and production method therefor |
| TW201805095A (en) * | 2016-07-22 | 2018-02-16 | 日商日東電工股份有限公司 | Method for manufacturing polarizing plate and apparatus for manufacturing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001191212A (en) * | 1999-12-29 | 2001-07-17 | Allied Material Corp | Rotary cutting multi-edged tool |
| JP4359413B2 (en) * | 2002-01-30 | 2009-11-04 | 住友化学株式会社 | Mirror surface processing method, chamfering method and mirror surface processing apparatus, and peripheral finishing method of laminated film |
| 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 |
| JP4545100B2 (en) * | 2006-02-15 | 2010-09-15 | 株式会社アライドマテリアル | Compound tool |
| CN102574220B (en) * | 2009-09-30 | 2015-08-19 | 住友化学株式会社 | The end-face processing method of film |
| JP6495374B2 (en) * | 2016-05-30 | 2019-04-03 | 住友化学株式会社 | Polarizing plate for image display device, image display device, and method for producing polarizing plate for image display device |
| JP2018012182A (en) * | 2016-07-22 | 2018-01-25 | 日東電工株式会社 | Method and apparatus for manufacturing polarization plate |
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2019
- 2019-04-19 JP JP2019080282A patent/JP2020001160A/en active Pending
- 2019-05-10 CN CN201980037139.4A patent/CN112236259A/en active Pending
- 2019-05-16 TW TW108116901A patent/TWI821291B/en active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015072453A (en) * | 2013-09-04 | 2015-04-16 | 住友化学株式会社 | Method for manufacturing polarizing plate with processed end face |
| WO2015163408A1 (en) * | 2014-04-24 | 2015-10-29 | 帝人株式会社 | Machined carbon-fiber-reinforced resin product having end face and production method therefor |
| TW201805095A (en) * | 2016-07-22 | 2018-02-16 | 日商日東電工股份有限公司 | Method for manufacturing polarizing plate and apparatus for manufacturing same |
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| Publication number | Publication date |
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| JP2020001160A (en) | 2020-01-09 |
| TW202000349A (en) | 2020-01-01 |
| CN112236259A (en) | 2021-01-15 |
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