JP5737134B2 - Adhesive sheet, display part and adhesive sheet manufacturing method - Google Patents

Description

  The present invention relates to a pressure-sensitive adhesive sheet in which a separator is attached to a main body portion having a sheet main body with a pressure-sensitive adhesive layer interposed therebetween, a manufacturing method thereof, and a display component to which a pressure-sensitive adhesive sheet is attached.

  For example, JP 2010-053310 A discloses a pressure-sensitive adhesive sheet in which a separator is attached to one surface of a base sheet including a difficult-to-work material layer via a pressure-sensitive adhesive layer. In this case, the pressure-sensitive adhesive sheet is irradiated with a laser beam (laser light) from the side of the base material sheet to the laminate (sheet body) of the base material sheet, the pressure-sensitive adhesive layer, and the separator. The substrate sheet and the pressure-sensitive adhesive layer are cut and half-cut at the irradiated site. In addition, the pressure-sensitive adhesive sheet, as an example, employs a film composed of a laminate of a metal material layer and a plastic film as a separator, so that the metal material in the separator when irradiated with a laser beam from the base sheet side A configuration is employed in which the laser beam is reflected on the surface of the layer to prevent the separator from being cut.

  In this case, as described above, this pressure-sensitive adhesive sheet is half-cut by irradiating a laser beam from the side of the base sheet during the cutting process. For this reason, the laser beam irradiation site in the adhesive sheet at the time when the cutting process is completed has a V-shaped cross section that gradually becomes narrower from the surface of the base material sheet toward the separator side of the adhesive layer. Shaped grooves are formed. Therefore, in the product (a laminate of the base sheet and the pressure-sensitive adhesive layer in this example) to be applied to the sticking object, gradually outward toward the separator side of the pressure-sensitive adhesive layer from the surface of the base sheet. The end face is slanted so that it approaches. The above-mentioned publication also discloses a pressure-sensitive adhesive sheet having a surface protective pressure-sensitive adhesive sheet affixed to the surface of the base material sheet. In this pressure-sensitive adhesive sheet as well, the separator side of the pressure-sensitive adhesive layer is separated from the surface of the surface protective pressure-sensitive adhesive sheet. The end face is slanted so as to gradually protrude outward as it goes to one side.

JP 2010-053310 A (page 3-5, FIG. 1-2)

  However, the conventional adhesive sheet has the following problems to be solved. That is, in the conventional pressure-sensitive adhesive sheet, the end surface is inclined so as to gradually protrude outward from the surface of the base material sheet (or the surface of the surface-protective pressure-sensitive adhesive sheet) toward one side of the separator in the pressure-sensitive adhesive layer. Yes. For this reason, in the conventional adhesive sheet, when viewed from the side of the base sheet (or surface protective adhesive sheet), the end of the adhesive layer is visible from the end of the base sheet, that is, the end of the adhesive layer Is in a state of protruding from the base material sheet. Therefore, in the conventional pressure-sensitive adhesive sheet, not only the appearance defect due to the protrusion of the pressure-sensitive adhesive layer is caused and its commercial value is lowered, but also foreign matters adhere to the protruded pressure-sensitive adhesive layer, resulting in contamination or protrusion. There is a problem that sticking occurs when a hand touches the adhesive layer.

  The present invention has been made in view of such problems, and has a high commercial value, and is capable of producing a pressure-sensitive adhesive sheet and display parts that do not cause dirt or sticking, and such a pressure-sensitive adhesive sheet. The main object is to provide a method for producing an adhesive sheet.

In order to achieve the above object, the pressure-sensitive adhesive sheet according to the present invention is a pressure-sensitive adhesive sheet in which a separator is affixed with a pressure-sensitive adhesive layer sandwiched between at least a main body part having a sheet main body, from the part on the pressure-sensitive adhesive layer side in the main body part An end surface is formed obliquely so as to protrude outward as it goes to a part opposite to the adhesive layer in the main body part, and a part of the main body part opposite to the adhesive layer side is formed on the main body part. A portion of the end surface opposite to the adhesive layer side of the main body portion and a portion of the main body portion of the end surface on the adhesive layer side so as to protrude outward from the adhesive layer side portion. There is a step between them .

  Moreover, as for the components for displays which concern on this invention, said adhesive sheet is affixed on the surface of the touchscreen main body.

Further, in the pressure-sensitive adhesive sheet manufacturing method according to the present invention, a cutting process is performed on a sheet body in which a separator is attached with a pressure-sensitive adhesive layer sandwiched between at least a main body portion having a sheet main body, and the first part in the sheet body is A pressure-sensitive adhesive sheet manufacturing method for manufacturing a pressure-sensitive adhesive sheet comprising the first part by separating from a second part around the first part, wherein the sheet body is irradiated with a laser beam from the separator side. A process of cutting the sheet body at the irradiation site of the laser beam is executed as the cutting process, and in the cutting process, the first region is irradiated from an irradiation source positioned above the first region to be cut off as the first site. It irradiates the laser beam obliquely towards the end of the laser beam by irradiating the laser beam on the sheet Cutting the sheet by running several times a beam irradiation process of removing a portion of the thickness direction at the site elevation.

  Moreover, the pressure-sensitive adhesive sheet manufacturing method according to the present invention forms a groove having a depth reaching the main body by irradiation of the laser beam at the time of the first beam irradiation processing, and at the time of the subsequent beam irradiation processing, A beam center line of the laser beam from the irradiation source to the irradiation site is positioned outside the beam center line of the laser beam in the first beam irradiation process with respect to the first region. Irradiate the laser beam.

  According to the pressure-sensitive adhesive sheet according to the present invention, by forming the end face obliquely so as to protrude outwardly from the part on the pressure-sensitive adhesive layer side in the main body part toward the part on the opposite side to the pressure-sensitive adhesive layer in the main body part, Not only is the situation where the end of the layer (adhesive constituting the adhesive layer) protrudes from the main body (sheet body, etc.), but the end of the adhesive layer is protected by the main body protruding from the end of the adhesive layer. Therefore, adhesion of dirt to the adhesive layer is avoided and a situation where the hand touches the end (adhesive) of the adhesive layer is avoided. Thereby, it is possible to provide a pressure-sensitive adhesive sheet having a good appearance value and a sufficiently high commercial value that does not cause adhesion and sticking of dirt.

  Further, according to the pressure-sensitive adhesive sheet according to the present invention, the main body portion is adhered to the end surface so that the portion of the main body portion opposite to the pressure-sensitive adhesive layer side protrudes outward from the portion of the main body portion on the pressure-sensitive adhesive layer side. By providing a step between the part on the opposite side of the layer side and the part on the adhesive layer side of the main body part at the end face, the part on the adhesive layer side in the main body part is opposite to the adhesive layer in the main body part Since it will be in the state (recessed state) retracted to the inside of the part, it is possible to suitably avoid the situation where the end of the adhesive layer protrudes when the separator is peeled off from this adhesive sheet and applied to the touch panel body. As a result, it is possible to avoid the situation where the hand touches the end of the adhesive layer due to the presence of the main body part (part opposite to the adhesive layer in the main body part) protruding outward from the adhesive layer. Avoid what happens Door can be.

  Moreover, according to the display component according to the present invention, the adhesive sheet is attached to the surface of the touch panel body, thereby causing an appearance defect due to the sticking out of the adhesive layer or adhesion of dirt, and the sticking out adhesive layer. It is possible to provide a display component having a sufficiently high commercial value including a pressure-sensitive adhesive sheet that is not sticky.

  Moreover, according to the adhesive sheet manufacturing method which concerns on this invention, while cut | disconnecting a laser beam with respect to a sheet | seat body from the separator side at the time of a cutting process, from the irradiation source located above the 1st area | region cut off as a 1st site | part By irradiating the laser beam obliquely toward the end of the first region, the end surface of the manufactured adhesive sheet is directed from the separator to one surface opposite to the adhesive layer in the main body, with the first region as a reference. Since it is processed so that it gradually protrudes outward, it is preferable that the end of the adhesive layer (adhesive constituting the adhesive layer) protrudes when the separator is peeled off from this adhesive sheet and applied to the touch panel body. And avoiding the situation where the hand touches the end (adhesive) of the adhesive layer due to the presence of the main body portion protruding outward from the adhesive layer. A result that can be, it is possible to avoid a situation in which with a viscosity occurs. In addition, unlike a processing method using a die-cutting apparatus in which a punching blade is pressed against a sheet body and punched, it can be cut without applying force to the sheet body, so that a hard coat layer is formed on the sheet body. When this is the case, it is possible to avoid the occurrence of cracks in the hard coat layer and the generation of dust from the hard coat layer being crushed.

  Furthermore, according to the pressure-sensitive adhesive sheet manufacturing method according to the present invention, unlike a conventional processing method in which a sheet body is cut into a desired shape by a single laser beam (laser light) irradiation, a beam irradiation process is performed a plurality of times. By cutting the sheet body, it is not necessary to irradiate the sheet body with a strong laser beam at the time of each beam irradiation process, so the amount of smoke generated from the sheet body per unit time can be sufficiently reduced. . As a result, it is possible to avoid a situation in which high-concentration smoke is present in the vicinity of the laser beam irradiation site in the sheet body.As a result, it is possible to sufficiently reduce the amount of smoke adhering to the surface of the sheet body and It is possible to avoid a situation in which scorching or thermal deformation occurs. Therefore, according to this pressure-sensitive adhesive sheet manufacturing method, it is possible to avoid the appearance defect, and as a result, the commercial value of the pressure-sensitive adhesive sheet manufactured by the cutting process can be sufficiently improved.

  Further, according to the pressure-sensitive adhesive sheet manufacturing method of the present invention, a groove having a depth reaching the main body is formed during the first beam irradiation process, and the beam center line of the laser beam during the subsequent beam irradiation process is the first beam. By irradiating the laser beam so as to be located outside the beam center line of the laser beam during the irradiation process, a subsequent beam irradiation process is performed on the side surface on the first region side of the groove formed by the first beam irradiation process. Since the laser beam within the range of the effective beam diameter is sometimes not irradiated, it is possible to avoid a situation in which the cutting portion in the thin separator is excessively heated as compared with the sheet main body and causes thermal deformation or scorching. . In addition, since the part where the groove is formed by the first beam irradiation process is in a state of being retracted (recessed) inside the part from which the laser beam irradiation part has been removed by the subsequent beam irradiation process, this adhesive sheet When the separator is peeled off and attached to the touch panel main body or the like, it is possible to suitably avoid the situation where the end of the adhesive layer protrudes, and the main body part (adhesive layer in the main body part) protruding outward from the adhesive layer As a result of avoiding a situation in which the hand touches the end of the adhesive layer due to the presence of the part on the opposite side of the adhesive layer, a situation in which sticking occurs can be avoided.

1 is a configuration diagram of a cutting processing device 1. FIG. 1 is a front view of a mobile phone 100. FIG. 4 is a cross-sectional view of a touch panel 140 in the mobile phone 100. FIG. It is sectional drawing of the cover sheet 10 (10a). 3 is a plan view of an intermediate body 20 for manufacturing the cover sheet 10. FIG. 3 is a plan view of an intermediate 30a for manufacturing the cover sheet 10. FIG. It is explanatory drawing for demonstrating the irradiation process of the laser beam L with respect to the intermediate body 30a. It is another explanatory drawing for demonstrating the irradiation process of the laser beam L with respect to the intermediate body 30a. It is sectional drawing of the intermediate body 30a (40) of the state which the irradiation process of the 1st laser beam L was completed. It is sectional drawing of the intermediate body 30a (40) of the state which the irradiation process of the 2nd laser beam L was completed. It is sectional drawing of the intermediate body 30a (40) of the state which the irradiation process of the 3rd time laser beam L was completed. It is sectional drawing of the intermediate body 30a (40) of the state which the irradiation process of the 4th time laser beam L was completed. FIG. 10 is still another explanatory diagram for explaining the irradiation process of the laser beam L to the intermediate 30a. It is explanatory drawing for demonstrating the intersection PCa of the irradiation locus of the laser beam L from the irradiation start position PSa to the position P1a, and the irradiation locus of the laser beam L from the position P2a to the irradiation end position PEa. 2 is a plan view of a cover sheet 10. FIG. It is a top view of the cover sheet 10a. It is explanatory drawing for demonstrating the intersection PCc of the irradiation locus | trajectory of the laser beam L from the irradiation start position PSc to the position P1c, and the irradiation locus of the laser beam L from the position P2c to the irradiation end position PEc. It is sectional drawing of the cover sheet 10b. It is sectional drawing of the cover sheet 10c.

  Hereinafter, an embodiment of an adhesive sheet, a display component, and an adhesive sheet manufacturing method will be described with reference to the accompanying drawings.

  The cover sheet 10 shown in FIGS. 4 and 15 is an example of an “adhesive sheet”, and is a touch panel 140 (an example of “display part”) as a component of the display 110 in the mobile phone 100 shown in FIG. 1), the cutting processing device 1 shown in FIG. 1 performs the cutting process on the intermediate 30a (an example of “sheet body”: see FIG. 6) and manufactures it. In this case, as shown in FIG. 2, the mobile phone 100 includes a display 110, a speaker 120, and a jog button 130, and includes a microphone, a control board, a secondary battery, and the like (not shown). The display device 110 is configured by integrating a backlight device and an LCD panel (not shown) and the touch panel 140 described above.

  Furthermore, as shown in FIG. 3, the touch panel 140 includes a transparent electrode portion 141, an adhesive layer 142, a cover glass 143, and a cover sheet 10. In this case, in this example, the transparent electrode part 141, the adhesive layer 142, and the cover glass 143 together constitute a “touch panel body”. As an example, the transparent electrode portion 141 is composed of a laminate of transparent electrode films in which a transparent electrode is formed of an ITO film or the like. In addition, since the specific structure of the transparent electrode part 141 is known, the illustration and detailed description about the layer structure are abbreviate | omitted. The pressure-sensitive adhesive layer 142 is composed of a pressure-sensitive adhesive for bonding the cover glass 143 to the transparent electrode portion 141. The cover glass 143 is a support for ensuring the physical strength of the touch panel 140 and is made of thin tempered glass.

  The cover sheet 10 functions as a protective cover for preventing the cover glass 143 from being damaged, and the design Ma (see FIG. 5: In this example, the display device) is provided on the front panel of the mobile phone 100 (the front surface of the display device 110). 110 is a sheet body having a function of providing an “outer frame” symbol or a “circle button” symbol and a “x button symbol” provided around the screen display area in 110, as described later. The device 1 is cut into the same shape as the outer shape of the display device 110 and attached to the surface of the cover glass 143 (the surface of the “touch panel body”) as shown in FIG.

  On the other hand, the cutting apparatus 1 is an apparatus configured to be able to manufacture the cover sheet 10 according to the “adhesive sheet manufacturing method”, and as shown in FIG. 1, the sheet body holding unit 2, the laser apparatus 3, and the smoke exhaust apparatus. 4. A camera 5 and a control unit 6 are provided, and as described later, a cutting process is performed on the intermediate body 30 to produce the intermediate body 30a (see FIG. 6), and the intermediate body 30a is targeted. The above-described cover sheet 10 is manufactured by executing a cutting process. The sheet body holding unit 2 includes a suction stage (not shown) connected to a suction pump, and sucks and holds a workpiece (in this example, the intermediate bodies 30 and 30a).

  The laser device 3 corresponds to an “irradiation source” and is configured to be able to emit a laser beam L for cutting a workpiece. In this case, in the cutting processing apparatus 1 of this example, as an example, the laser apparatus 3 is configured by a carbon dioxide gas laser apparatus (an example of an apparatus that can irradiate a laser beam L suitable for processing an object formed of PET). ing. The laser device 3 deflects a laser beam L (for example, a laser beam having a wavelength of 9.3 μm) generated in a laser beam generation unit according to the control of the control unit 6, so that a laser is applied to an arbitrary part of the workpiece. The beam L can be irradiated.

  The smoke exhaust device 4 is disposed on the irradiation surface side of the laser beam L in the processing object (intermediate body 30, 30 a), and smoke (laser beam) generated from the processing object by the laser beam L irradiation by the laser device 3. Smoke exhausting processing is performed in which the components of the intermediate bodies 30 and 30a vaporized by the irradiation of L are sucked and discharged from an exhaust port of a duct (not shown). The camera 5 picks up an image of a mark (for example, a positioning mark Mb (see FIGS. 5 and 6) described later) attached to an object to be processed in order to position the irradiation position of the laser beam L by the laser device 3. The imaging data is output to the control unit 6.

  The control unit 6 controls the cutting processing apparatus 1 as a whole. Specifically, the control unit 6 controls a suction pump (not shown) to hold the workpiece by the sheet body holding unit 2. In addition, the control unit 6 controls the camera 5 to image the processing object held by the sheet body holding unit 2, and based on the imaging data output from the camera 5, the cutting target part in the processing object Is identified. Further, the control unit 6 controls the laser device 3 to cut a predetermined portion by irradiating the workpiece with the laser beam L, and controls the smoke exhaust device 4 to execute the smoke exhausting process. Let

  In this case, as shown in FIG. 4, the cover sheet 10 manufactured by the cutting processing apparatus 1 has a hard coat layer 12 formed on one surface (the lower surface in the figure) of the sheet body 11, and this hard coat A protective film 13 is affixed so as to cover the surface of the layer 12, and a printed layer 14, a spacer layer 15 and an adhesive layer 16 are formed in this order on the other surface (the upper surface in the figure) of the sheet body 11. And the separator 17 is arrange | positioned so that the adhesion layer 16 may be covered, and the thickness is formed in about 280 micrometers.

  As an example, the sheet body 11 is made of a PET (Polyethylene terephthalate) film having a thickness of about 125 μm. The hard coat layer 12 is formed into a thin film having a thickness of about 5 μm by applying and curing a resin material for forming a hard coat layer mainly composed of an acrylic resin. The protective film 13 is comprised by the PET film (film formed with the same material as the sheet | seat main body 11) of thickness about 50 micrometers as an example. The print layer 14 is a layer for providing the above-described symbol Ma, the positioning mark Mb (see FIGS. 5 and 6) for specifying the position to be cut during the cutting process for the intermediate bodies 30 and 30a, and the like. The film is formed into a thin film having a thickness of about 10 μm with a colored resin material such as vinyl urethane resin containing a pigment such as titanium oxide or carbon black. In FIGS. 2, 5, and 15, and FIG. 16 about the cover sheet 10 a described later, the portion where the printed layer 14 is formed is illustrated by being filled with a mesh line.

  The spacer layer 15 is a functional layer for filling a step formed on one surface of the sheet main body 11 due to the presence of the print layer 14. As an example, the spacer layer 15 is formed by applying and curing an ultraviolet curable resin. The thickness of the portion where 14 is present is about 14 μm, and the thickness of the portion where the printing layer 14 is not present is about 24 μm. The adhesive layer 16 is formed into a thin film having a thickness of about 25 μm by bonding an acrylic adhesive layer transfer film to the surface of the spacer layer 15 and transferring the acrylic adhesive layer (adhesive) to the spacer layer 15. Has been. As an example, the separator 17 is made of a PET film having a thickness of about 50 μm (a film formed of the same material as the sheet main body 11).

  In this case, the cover sheet 10 employs a protective film 13 and a separator 17 formed of the same material as that of the thickest sheet main body 11 (in this example, PET). Therefore, for example, unlike the configuration employing a protective film and a separator formed of a material different from the sheet body 11 (for example, PE (Polyethylene)), the sheet body 11 is cut during the “cutting process” described later. When a suitable laser beam L is irradiated onto the intermediates 30 and 30a, the protective film 13 and the separator 17 are excessively lost at the irradiated portion of the laser beam L, or the protective film 13 and the separator 17 are burnt or protected. It can be avoided that the degree of disappearance of the film 13 or the separator 17 is too small and the cutting becomes incomplete.

  Further, as shown in FIG. 15, the cover sheet 10 has a sound hole 51 for emitting sound output from the speaker 120 of the mobile phone 100 and a jog button hole 52 for exposing the jog button 130. Is open. In this case, as will be described later, when the cover sheet 10 is attached to the cover glass 143 in manufacturing the touch panel 140, the separator 17 is peeled off from the adhesive layer 16. Further, in the state where the sticking to the cover glass 143 is completed, the protective film 13 is peeled off from the hard coat layer 12 as necessary. For this reason, as shown in FIG. 3, the cover sheet 10 in a state of being attached to the cover glass 143 is in a state where the protective film 13 and the separator 17 are not present.

  As will be described later, the cover sheet 10 is manufactured by a cutting process for the intermediate body 30a, the intermediate body 30a is manufactured by a cutting process for the intermediate body 30, and the intermediate body 30 is an intermediate body. It is manufactured by a cutting process for 20 (see FIG. 5). Therefore, since the layer structure of the intermediate bodies 20, 30, and 30a is the same as the layer structure of the cover sheet 10, detailed description thereof is omitted.

  In manufacturing the cover sheet 10 described above, first, an original fabric (not shown) for manufacturing the intermediate 20 is manufactured. Specifically, a sheet is formed by applying a resin material for forming a hard coat layer on one surface of a sheet body 11 (PET film) formed in a long belt shape and wound in a roll shape, and then cured. A hard coat layer 12 is formed on one surface of the main body 11. Next, in order to avoid scratching the formed hard coat layer 12, a protective film 13 is attached to the surface of the hard coat layer 12. Subsequently, the sheet body 11 on which the formation of the hard coat layer 12 and the application of the protective film 13 have been completed is cut into a predetermined length (in this example, the length of the intermediate body 20).

  Next, the pattern Ma and the positioning mark Mb (see FIGS. 5 and 6) are printed on the other surface of the cut sheet body 11 (the back surface of the surface on which the hard coat layer 12 is formed) by the printing device, whereby the printing layer 14 is printed. Form. Subsequently, the spacer layer 15 is formed by applying and curing an ultraviolet curable resin material on the surface of the sheet body 11 where the printing layer 14 is formed. Next, an adhesive layer 16 is formed by pasting an acrylic adhesive layer transfer film on the surface of the spacer layer 15 and transferring the acrylic adhesive layer (adhesive) to the spacer layer 15. Then, the intermediate body 20 is completed by sticking the separator 17 so as to cover the adhesive layer 16, as shown in FIG. Subsequently, the intermediate body 20 is cut at a broken line portion shown in FIG. Thereby, the intermediate 30 is completed.

  Next, a “cutting process” for the intermediate 30 is executed to open the sound hole 51 and the jog button hole 52. At this time, the “beam irradiation process” for irradiating the end of the region where the sound hole 51 is to be formed or the end of the region where the jog button hole 52 is to be formed with the laser beam L is executed a plurality of times. Then, the intermediate body 30 is cut at the irradiated portion of the laser beam L. Thereby, as shown in FIG. 6, the intermediate 30a is completed. Subsequently, the cover sheet 10 is manufactured by executing a “cutting process” for the intermediate 30a.

  Specifically, first, the intermediate body 30a is set in the cutting processing apparatus 1 so that the surface on which the separator 17 is disposed faces upward and the protective film 13 is in contact with the sheet body holding portion 2, and the “cutting process” is performed. ”Is executed. In the “cutting process” for the intermediate body 30a, the intermediate body 30a corresponds to the “sheet body”, and the area A1a filled with a mesh line in FIG. ) Corresponds to the “first region”, and the laminate of the spacer layer 15, the printing layer 14, the sheet main body 11, the hard coat layer 12, and the protective film 13 corresponds to the “main body portion”.

  Next, the control unit 6 controls the sheet body holding unit 2 to suck and hold the intermediate body 30a. In the cutting processing device 1, the laser device 3 is positioned above the region A1a in a state where the intermediate body 30a is held by the sheet body holding unit 2. Subsequently, the control unit 6 controls the camera 5 to image the intermediate body 30 a held by the sheet body holding unit 2. At this time, the control unit 6 identifies the position of the positioning mark Mb in the intermediate 30a by performing image analysis on the imaging data output from the camera 5, and based on the identified position, the region A1a to be cut off as the cover sheet 10 Specify the position of the edge of.

  Next, the control unit 6 controls the laser device 3 to start the irradiation process of the laser beam L to the intermediate body 30a, and controls the smoke exhausting device 4 to start the smoke exhausting process. At this time, the laser device 3 deflects the laser beam L generated by the laser beam generation unit in a state of being positioned above the region A1a, so that the laser device 3 enters the region A2a as shown in FIG. The irradiation of the laser beam L to the intermediate 30a is started from the prescribed irradiation start position PSa, and the laser beam L is irradiated to the intermediate 30a while scanning toward the end of the region A1a (in this example, the position P1a). . Further, the smoke exhaust device 4 sucks smoke generated from the intermediate 30a by the irradiation of the laser beam L and discharges it from the exhaust port.

Then, the laser device 3, by scanning the laser beam L without stopping the irradiation, as shown in FIG. 8, as an example, the position from the position P1a counterclockwise along the edge of the area A1a (periphery) The intermediate body 30a is irradiated with the laser beam L up to P1a. In this case, as a result of the vaporization and disappearance of the constituent material of the intermediate 30a by the irradiation of the laser beam L, as shown in FIG. 9, the intermediate in the irradiation site of the laser beam L (in this example, the end of the region A1a) A part of the body 30a in the thickness direction is removed in the range of the effective beam diameter of the laser beam L (the irradiation energy range in which the constituent material can vaporize and disappear at the irradiation site: 260 μm as an example). A groove H1 having a depth reaching (an example of “a groove having a depth reaching the main body”) is formed in the intermediate body 30a. Thus, the first (first) “beam irradiation process” for the intermediate 30a is completed.

  In this case, in the “cutting process” for the intermediate 30a, as described above, the laser beam L is obliquely irradiated from the laser device 3 positioned above the region A1a toward the end of the region A1a. Therefore, as shown in the figure, the groove H1 formed at the end of the region A1a is more outward on the hard coat layer 12 side (lower side in the figure) depending on the direction of irradiation of the laser beam L to the intermediate 30a. It is formed diagonally so as to be located at Note that an arrow L1 shown in the figure represents the beam center line of the laser beam L irradiated to the intermediate 30a during the “first beam irradiation process” (the locus of the beam center between the laser device 3 and the intermediate 30a). ing.

Then, the laser device 3, by scanning the laser beam L without stopping the irradiation, the intermediate body 30a from the position P1a along the edge of the area A1a (periphery) counter-clockwise to the position P1a of the laser beam L Irradiate again. At this time, the laser apparatus 3 tilts the direction of irradiation of the laser beam L with respect to the intermediate 30a outward from the direction of irradiation of the laser beam L in the above-mentioned “first beam irradiation process”. The beam center line of the laser beam L from the apparatus 3 to the irradiation site is positioned outside the beam center line of the laser beam L in the “first beam irradiation process” with reference to the region A1a.

  Therefore, as shown in FIG. 10, the side surface (inner side surface) on the region A1a side in the groove H1 is not irradiated with the laser beam L within the effective beam diameter, and the side surface on the region A2a side in the groove H1. The separator 17 and the adhesive layer 16 constituting the (outer side surface), the spacer layer 15 below the groove H1, the printing layer 14, and a part of the sheet body 11 on the spacer layer 15 side are effective beam diameters of the laser beam L. A groove H2 having a depth reaching the middle in the thickness direction of the sheet main body 11 is formed in the intermediate body 30a. Thus, the second “beam irradiation process” for the intermediate 30a is completed.

  As described above, the beam center line of the laser beam L in the second “beam irradiation process” is positioned outside the beam center line of the laser beam L in the first “beam irradiation process”. As a result, as shown in FIG. 10, the side surface on the region A1a side in the groove H2 formed in the intermediate body 30a remains part of the bottom of the groove H1 formed by the first “beam irradiation process”, and the spacer layer 15 This is a state in which a level difference is generated in the part.

  In this case, the arrow L2 shown in the figure indicates the beam center line of the laser beam L irradiated to the intermediate 30a during the “second beam irradiation process” (the locus of the beam center between the laser device 3 and the intermediate 30a). Represents. Note that the beam center line (arrow L2) of the laser beam L in the “second beam irradiation process” is more outward than the beam center line (arrow L1) of the laser beam L in the “first beam irradiation process”. In this example, the deviation D between the center lines of the beams at the surface portion of the intermediate 30a is within a range of 10 μm to 100 μm (less than 1/2 of the effective beam diameter). : Preferably, within the range of 10 μm to 30 μm: as an example, about 10 μm). In this case, if the above-described deviation amount D is too large, the step formed on the cut surface is likely to be visually recognized, and the appearance is deteriorated and the cover sheet 10 may be easily peeled off from the object to be pasted. In addition, if the above-described deviation amount D is too small, an effect described later provided by providing a step is reduced.

Subsequently, the laser device 3, by scanning the laser beam L without stopping the irradiation, laser in Intermediate 30a from the position P1a along the edge of the area A1a (periphery) counter-clockwise to the position P1a beam L Irradiate again. At this time, for example, the laser apparatus 3 aligns the direction of irradiation of the laser beam L with respect to the intermediate 30a to the same direction as the direction of irradiation of the laser beam L in the “second beam irradiation process”. The intermediate body 30a is irradiated with a laser beam L.

  As a result, as shown in FIG. 11, a portion of the hard coat layer 12 side in the sheet body 11 below the groove H2 and the hard coat layer 12 are removed within the range of the effective beam diameter of the laser beam L, and the protective film A groove H3 having a depth reaching 13 is formed in the intermediate 30a. Thus, the third “beam irradiation process” for the intermediate 30a is completed. The arrow L3 shown in the figure indicates the beam center line of the laser beam L irradiated to the intermediate 30a during the “third beam irradiation process” (the locus of the beam center between the laser device 3 and the intermediate 30a). Represents.

Then, the laser device 3, by scanning the laser beam L without stopping the irradiation, the intermediate body 30a from the position P1a along the edge of the area A1a (periphery) counter-clockwise to a position P2a laser beam L Irradiate. At this time, as an example, the laser device 3 changes the direction of irradiation of the laser beam L to the intermediate 30a with respect to the laser beam at the time of the “second beam irradiation process” and the “third beam irradiation process”. The intermediate body 30a is irradiated with the laser beam L in the same direction as the irradiation direction of L. Thereby, as shown in FIG. 12, the protective film 13 below the groove H3 is removed within the range of the effective beam diameter of the laser beam L. The arrow L4 shown in the figure indicates the beam center line of the laser beam L irradiated to the intermediate 30a during the “fourth beam irradiation process” (the locus of the beam center between the laser device 3 and the intermediate 30a). Represents.

  Subsequently, as shown in FIG. 13, the laser apparatus 3 emits the laser beam L from the position P2a (the end of the area A1a) to the irradiation end position PEa defined in the area A2a without stopping the irradiation. The scanning is completed, and the irradiation of the laser beam L to the intermediate 30a is completed at the irradiation end position PEa. Thus, the fourth “beam irradiation process” for the intermediate body 30a is completed, and the region A1a corresponds to the surrounding portion (the region A2a) as the cover sheet 10 (an example of “first portion”). Part: an example of “second part”. Thereby, the “cutting process” for the intermediate 30a is completed.

  In the “cutting process” described above, the irradiation locus of the laser beam L from the irradiation start position PSa to the position P1a and the irradiation locus of the laser beam L from the position P2a to the irradiation end position PEa intersect each other. For this reason, as shown in FIG. 14, at the intersection PCa between the two irradiation trajectories, the laser beam L is irradiated once more at the same location than at the other irradiation sites, and therefore, due to the irradiation of the laser beam L. The disappearance amount (the amount removed by vaporization) of the constituent material of the intermediate 30a is locally increased compared to other irradiation sites. However, in the “cutting process” performed by the cutting processing apparatus 1, the laser beam L is scanned so that the two irradiation trajectories intersect at a position spaced outward from the end of the region A1a. Accordingly, a situation in which the constituent material of the intermediate body 30a is removed so as to be recessed toward the inside of the area A1a in the vicinity of the intersection PCa is avoided, and a concavity that is conspicuous at the end of the cover sheet 10 is avoided. The intermediate 30a is cut along the end of A1a. Thereby, as shown in FIG. 15, the cover sheet 10 is completed.

  Further, in the completed cover sheet 10, as shown in FIG. 12, the beam center line of the laser beam L at the second “beam irradiation process” is changed to the beam center of the laser beam L at the first “beam irradiation process”. By being positioned outside the line, a portion of the end surface (cut surface: peripheral surface) opposite to the adhesive layer 16 of the spacer layer 15 (“site opposite to the adhesive layer side of the main body”) And a portion of the spacer layer 15 on the adhesive layer 16 side of the end surface (“site on the adhesive layer side of the main body”) is in a state where a step is generated. Further, the completed cover sheet 10 is irradiated with the laser beam L obliquely from the laser device 3 toward the end of the region A1a during each of the four “beam irradiation processes” described above. Is gradually outwardly directed from the separator 17 on the near side in the traveling direction of the laser beam L during the cutting process toward the surface of the protective film 13 on the far side in the traveling direction (“one surface opposite to the adhesive layer in the main body”) It is slanted so as to approach (leftward in the figure). Thereby, in the cover sheet 10, the end surfaces of the pressure-sensitive adhesive layer 16 and the separator 17 are retracted to the inner side (right side in the figure) than the end surfaces of the printing layer 14, the sheet main body 11, the hard coat layer 12, and the protective film 13 ( It is in a state of being buried.

  In this case, the laser device 3 in the above-described cutting processing device 1 irradiates the laser beam L while scanning at a linear velocity of 80 to 90 mm / s or less, so that a desired portion of the intermediate 30 or the intermediate 30a is irradiated once. It has the ability to cut by the beam irradiation process. On the other hand, in each beam irradiation process at the time of the above-described both cutting processes, the “beam irradiation process” of irradiating the laser beam L while scanning at a linear velocity of about 300 mm / s is executed four times, so The desired site of 30a is cut. Therefore, in both of the above cutting processes, the laser beam for the intermediate bodies 30 and 30a per each beam irradiation process is more than the cutting process in which a desired portion of the intermediate bodies 30 and 30a is cut by one beam irradiation process. The irradiation energy of L is sufficiently small.

  For this reason, in both of the above cutting processes, the amount of heat generated in the intermediate bodies 30 and 30a during the beam irradiation process is sufficiently small. As a result, since the amount of smoke generated from the intermediates 30 and 30a per unit time is sufficiently small compared with the case of cutting by one beam irradiation treatment, the cutting treatment site ( As a result of avoiding a situation in which high-concentration smoke is present in the vicinity of the irradiated portion of the laser beam L), the amount of smoke (fine particles constituting the smoke) attached to the intermediate bodies 30 and 30a is sufficiently reduced. Further, it is possible to avoid a situation in which thermal deformation occurs in the intermediate bodies 30 and 30a (in the vicinity of the cut site by the irradiation of the laser beam L), and the constituent materials of the intermediate bodies 30 and 30a are carbonized and burnt.

  In addition, when the applicant cuts a desired portion of the intermediate 30 or 30a by three “beam irradiation processes”, the laser beam L is irradiated while scanning at a linear velocity of about 200 mm / s. When the desired portion of the intermediate 30 or 30a is cut by the “beam irradiation process” in FIG. 1, the laser beam L is irradiated while scanning at a linear velocity of about 150 mm / s, thereby scanning at a linear velocity of about 300 mm / s. While confirming that the “beam irradiation process” of irradiating the laser beam L is performed four times, the same effect as the above “cutting process” of cutting a desired part of the intermediate 30 or 30a can be obtained. doing.

  In addition, when the applicant cuts the intermediate bodies 30 and 30a, the applicant performs the “beam irradiation process” five times or more while the scanning speed of the laser beam L is higher than the linear speed of 300 mm / s (5 (Even when the intermediate bodies 30 and 30a are cut by the “beam irradiation process” more than once), the same effect as the above “cutting process” for cutting the intermediate bodies 30 and 30a by the “beam irradiation process” four times. I have confirmed that I can play. However, when the number of executions of the “beam irradiation process” is excessively increased when cutting the intermediates 30 and 30a having a thickness of about 280 μm, the grooves formed in the “first beam irradiation process” and the “second beam irradiation process” are formed. In the “beam irradiation process” to be executed later on the side portions such as H1 and H2, the laser beam L outside the effective beam diameter is irradiated several times. As a result, on the incident surface side (in this example, the separator 17 side) of the laser beam L in the intermediate bodies 30 and 30a, the cut surface may be slightly deformed so as to be fluffed. It is not preferable that the “beam irradiation process” executed at the time is performed excessively many times.

  On the other hand, when manufacturing the touch panel 140, the cover sheet 10 is attached to the surface of the cover glass 143 (“the surface of the touch panel body”). It is assumed that the operation of bonding the cover glass 143 to the transparent electrode portion 141 with the adhesive layer 142 has been completed. Specifically, first, the separator 17 is peeled from the cover sheet 10. Next, the cover sheet 10 (adhesive layer 16) is placed on the surface of the cover glass 143 with the adhesive layer 16 facing downward. At this time, the sound holes and jog button holes (not shown) formed in the transparent electrode portion 141, the adhesive layer 142 and the cover glass 143 are aligned with the jog button holes 52 of the cover sheet 10. Align. Next, the cover sheet 10 is pressed toward the cover glass 143. Thereby, the laminate of the spacer layer 15, the printing layer 14, the sheet body 11, the sheet body 11, and the hard coat layer 12 is bonded to the surface of the cover glass 143 by the adhesive layer 16.

  In this case, as described above, in the cover sheet 10 manufactured by the cutting process by the cutting apparatus 1, a step is formed in the portion of the spacer layer 15 on the end face, and gradually from the separator 17 toward the protective film 13. The end face is processed obliquely so as to protrude outward, and the adhesive layer 16 and the separator 17 are in a state of being retracted inward from the printing layer 14, the sheet main body 11, the hard coat layer 12, and the protective film 13. . Therefore, in the state where the cover sheet 10 is adhered to the cover glass 143, a situation where the end of the adhesive layer 16 protrudes from between the cover glass 143 and the spacer layer 15 is avoided, whereby the end of the adhesive layer 16 is prevented. A situation in which foreign matter adheres to the surface or the protruding adhesive layer 16 sticks can be avoided. Thereafter, the protective film 13 is peeled off as necessary to complete the touch panel 140.

  In addition, an applicant makes the situation where the edge of the adhesion layer 16 protrudes about the end surface of the cover sheet 10 by making it an inclined surface (inclined surface) which has an angle of 16 degrees or more with respect to the thickness direction. It has been confirmed that it is possible to suitably avoid a situation in which a foreign substance adheres to the end or a hand touches the adhesive layer 16 to cause sticking. Further, when the “cutting process” is performed on the end surface of the cover sheet 10 so as to be an inclined surface (inclined surface) having an angle of more than 35 ° with respect to the thickness direction, the cover sheet 10 is thinner than the sheet body 11. The film 13 may be excessively melted by the irradiation of the laser beam L, and the end portion of the hard coat layer 12 may be exposed from the protective film 13. Moreover, when it is set as the diagonal surface which has an angle which exceeds 35 degrees with respect to the thickness direction, there exists a possibility that the cover sheet 10 may peel easily from a sticking target object. Therefore, the end surface of the cover sheet 10 is preferably an oblique surface having an angle in the range of 16 ° to 35 ° with respect to the thickness direction. In this case, in the cover sheet 10 described above, the end surface thereof is, as an example, an oblique surface having an angle of about 25 ° with respect to the thickness direction.

  Thus, according to this cover sheet 10, the end surface is inclined so as to protrude outward from the portion of the spacer layer 15 on the printed layer 14 side toward the portion of the protective film 13 opposite to the adhesive layer 16. By forming, not only the situation where the end of the adhesive layer 16 (the adhesive constituting the adhesive layer 16) protrudes from the sheet body 11 or the like is avoided, but also the sheet body 11 or the like that protrudes from the end of the adhesive layer 16 or the like. As a result, the end of the adhesive layer 16 is protected, so that adhesion of dirt to the adhesive layer 16 is avoided and a situation where the hand touches the end (adhesive) of the adhesive layer 16 is avoided. Thereby, it is possible to provide the cover sheet 10 having a good appearance value and a sufficiently high commercial value that does not cause adhesion or sticking of dirt.

  Further, according to the cover sheet 10, the portion of the spacer layer 15 opposite to the adhesive layer 16, the print layer 14, the sheet body 11, the hard coat layer 12, and the protective film 13 are arranged on the adhesive layer 16 side of the spacer layer 15. By providing a step on the end face so as to protrude outward from the part, the part on the adhesive layer 16 side in the spacer layer 15 is the part on the opposite side of the adhesive layer 16 in the spacer layer 15, the printing layer 14. Since the sheet body 11, the hard coat layer 12 and the protective film 13 are in a state of being retracted inside (recessed state), when the separator 17 is peeled off from the cover sheet 10 and attached to the cover glass 143 or the like, The spacer which can avoid suitably the situation where the edge of the adhesion layer 16 protrudes, and protrudes outside rather than the adhesion layer 16 15, printed layer 14, the seat body 11 and the results can be avoided to touch the hand on the edge of the adhesive layer 16 by the presence of the hard coat layer 12, it is possible to avoid a situation where with viscosity results.

  Furthermore, according to this touch panel 140, by sticking the cover sheet 10 to the surface of the cover glass 143, the appearance defect caused by the sticking out of the adhesive layer or the adhesion of dirt, and the stickiness caused by the sticking out adhesive layer It is possible to provide the touch panel 140 having a sufficiently high commercial value provided with the cover sheet 10 in which no occurrence occurs.

  In addition, according to the method for manufacturing the cover sheet 10, the laser beam L is applied to the intermediate body 30 a from the separator 17 side during the “cutting process”, and the cover sheet 10 is positioned above the region A 1 a to be separated. By irradiating the laser beam L obliquely from the laser device 3 toward the end of the region A1a, the end surface of the manufactured cover sheet 10 gradually moves from the separator 17 toward the protective film 13 with reference to the region A1a. Since the separator 17 is peeled off from the cover sheet 10 and attached to the cover glass 143 or the like, the end of the adhesive layer 16 (adhesive constituting the adhesive layer 16) protrudes because it is processed so as to protrude outward. A spacer layer that can suitably avoid the situation and protrudes outward from the adhesive layer 16 5. As a result of being able to avoid a situation where a hand touches the end (adhesive) of the pressure-sensitive adhesive layer 16 due to the presence of the printing layer 14, the sheet main body 11 and the hard coat layer 12, a situation where stickiness occurs can be avoided. . Further, unlike a processing method using a die-cutting device in which a punching blade is pressed against a sheet body and punched, it can be cut without applying force to the intermediate body 30a and the like, and thus formed in the intermediate body 30a. It is possible to avoid the occurrence of cracks in the hard coat layer 12 and the generation of dust from the hard coat layer 12 being crushed.

  Furthermore, according to the method for manufacturing the cover sheet 10, unlike the conventional processing method in which the sheet body is cut into a desired shape by a single laser beam (laser light) irradiation, the “beam irradiation process” is performed a plurality of times. By cutting the intermediate body 30a by executing, it is not necessary to irradiate the intermediate body 30a with the strong laser beam L at the time of each beam irradiation process, so that the amount of smoke generated from the intermediate body 30a per unit time can be sufficiently increased. Can be reduced. As a result, it is possible to avoid a situation in which high-concentration smoke is present in the vicinity of the irradiated portion of the laser beam L in the intermediate 30a. As a result, the amount of smoke adhering to the surface of the intermediate 30a can be sufficiently reduced, It is possible to avoid a situation in which the cut surface is burnt or thermally deformed. Therefore, according to the method for manufacturing the cover sheet 10, it is possible to avoid the appearance defect, and as a result, the commercial value of the cover sheet 10 can be sufficiently improved.

  Further, according to the method for manufacturing the cover sheet 10, the groove H1 having a depth reaching the spacer layer 15 is formed at the time of the first “beam irradiation process”, and the beam center of the laser beam L at the subsequent “beam irradiation process”. By irradiating the laser beam L so that the line is located outside the beam center line of the laser beam L at the time of the first “beam irradiation process”, the groove H1 formed by the first “beam irradiation process” is formed. Since the laser beam L within the range of the effective beam diameter is not irradiated on the side surface on the area A1a side during the subsequent “beam irradiation processing”, the cutting site in the thin separator 17 is excessively heated as compared with the sheet body 11. It is possible to avoid a situation in which thermal deformation is caused or scorching occurs. Further, the portion where the groove H1 is formed by the first “beam irradiation process” (in this example, a part of the separator 17, the adhesive layer 16, and the spacer layer 15 on the adhesive layer 16 side) is the subsequent “beam irradiation process”. In this example, the portion where the irradiation portion of the laser beam L is removed (in this example, the portion on the printing layer 14 side in the spacer layer 15, the printing layer 14, the sheet main body 11, the hard coat layer 12, and the protective film 13) is retracted inside. Since it becomes a dead state (recessed state), when the separator 17 is peeled from the cover sheet 10 and attached to the cover glass 143 or the like, it is possible to suitably avoid the situation where the end of the adhesive layer 16 protrudes, Due to the presence of the spacer layer 15, the printing layer 14, the sheet main body 11, and the hard coat layer 12 protruding outward from the adhesive layer 16. Whereby it is possible to prevent a situation in which the hand touches the edge of the adhesive layer 16 I, it is possible to avoid a situation where with viscosity results.

  The configurations of the “adhesive sheet” and the “display component” and the “adhesive sheet manufacturing method” are not limited to the above examples. For example, when the cover sheet 10 is manufactured, in order to reduce the irradiation energy of the laser beam L for each beam irradiation process, the laser beam L is scanned more than when a desired portion is cut by one irradiation of the laser beam L. Although the example of increasing the speed has been described, the amount of energy of the laser beam L generated in the laser beam generating unit itself is reduced by reducing the voltage or current of the power supplied to the laser beam generating unit in the laser device 3. And the irradiation energy of the laser beam L for each beam irradiation process can also be made small.

  In addition, the cover sheet 10 having a rectangular shape in plan view has been described as an example, but the shape in plan view of the “adhesive sheet” is not limited thereto. Further, the sound hole 51 and the jog button hole 52 are not essential components of the “adhesive sheet”, and even in the “adhesive sheet” in which these holes do not exist, the “main body portion” By forming the end surface so as to gradually protrude outward toward the one surface opposite to the pressure-sensitive adhesive layer, the same effects as those of the cover sheet 10 can be obtained. Specifically, as an example, during the “cutting process” for the purpose of manufacturing the cover sheet 10a shown in FIG. 16, the same as the “cutting process for the intermediate 30a” at the time of manufacturing the cover sheet 10 described above. By executing the “cutting process” in the procedure, the same effect as that of the cover sheet 10 can be obtained in the cover sheet 10a.

  In this case, the cover sheet 10a is another example of the “first part” and the “adhesive sheet”, and has four corners R1a to R1d having a relatively large radius of curvature, and a speaker of a mobile phone (not shown). In order to avoid this, a notch is provided on the upper side. Further, the corners R2a, R2b and the corners R3a, R3b of the notch portion have a radius of curvature smaller than that of the above four corners R1a to R1d (“the first region of the first region among the corners of the first region”). The corner having the smallest radius of curvature among the corners projecting outwards ”). When manufacturing the cover sheet 10a, the intermediate body 40 (see FIG. 17) for the cover sheet 10a is manufactured in the same procedure as the manufacturing process of the intermediate body 30 for manufacturing the cover sheet 10 described above. The intermediate body 40 is another example of the “sheet body”, and the area A1c corresponds to the “first area”.

In the “cutting process” for the intermediate body 40, the laser device 3 deflects the laser beam L in a state of being positioned above the area A1c, so that the inside of the area A2c as shown in FIG. The irradiation of the laser beam L to the intermediate body 40 is started from the irradiation start position PSc that is not shown in the figure, and the laser beam is applied to the intermediate body 40 while scanning toward the end of the region A1c (in this example, the position P1c). L is irradiated. Next, by scanning the laser beam L without stopping the irradiation, the intermediate body 40 is irradiated with the laser beam L from the position P1c to the position P1c counterclockwise along the end (outer periphery) of the region A1c. "Process" is executed three times in succession. Each “beam irradiation process” from the first time to the third time for the intermediate body 40 corresponds to each “beam irradiation process” from the first time to the third time for the intermediate body 30a at the time of manufacturing the cover sheet 10 described above. Detailed description will be omitted.

Then, the laser device 3, by scanning the laser beam L without stopping the irradiation, complete after the irradiation with the laser beam L to Intermediate 40 (4 th of the "beam irradiation treatment" from the position P1c to the position P2c ), The laser beam L is scanned from the position P2c (the end of the area A1c) to the irradiation end position PEc defined in the area A2c, and the irradiation of the laser beam L to the intermediate body 40 is ended at the irradiation end position PEc. Thus, the fourth “beam irradiation process” for the intermediate 40 is completed, and the region A1c is the cover sheet 10a, and the surrounding region (the region corresponding to the region A2c: an example of the “second region”) ). Thereby, the “cutting process” for the intermediate 40 is completed, and the cover sheet 10a is completed.

  In this case, in the “cutting process”, the irradiation locus of the laser beam L from the irradiation start position PSc to the position P1c and the irradiation locus of the laser beam L from the position P2c to the irradiation end position PEc intersect each other. For this reason, at the intersection PCc of the two irradiation trajectories, the laser beam L is irradiated once more on the same portion than the other irradiation portions, so that the constituent material of the intermediate 40 by the irradiation of the laser beam L The amount of disappearance (the amount removed by vaporization) is locally higher than other irradiated sites.

  However, in the above-mentioned “cutting process” for the intermediate 40, the laser beam L is scanned so that the two irradiation trajectories intersect at a position spaced outward from the end of the region A1c, and the intersection PCc is Among the corners R1a to R1d, R2a, R2b, R3a, and R3b of the region A1c, the corner R2a having the smallest curvature radius among the corners R1a to R1d, R2a, and R2b that protrudes toward the outside of the region A1c. , R2b (in this example, the corner R2b) is irradiated with the laser beam L so as to be positioned in the vicinity. Therefore, according to the above “cutting process” for the intermediate body 40, even if a very small dent is generated, any one of the corners R2a and R2b having a small curvature radius (in this example, the corner Since a recess is caused by crossing the irradiation path of the laser beam L with R2b), the recess can be made almost inconspicuous. Thereby, the commercial value of the cover sheet 10a can be further improved.

  Further, the portion from the portion of the spacer layer 15 opposite to the adhesive layer 16 to the surface of the protective film 13 (“the portion of the main body portion opposite to the adhesive layer side”) is the adhesive layer 16 side of the spacer layer 15. The cover sheet 10 provided with a step on the end surface so as to protrude outward from the part ("part on the adhesive layer side of the main body") has been described as an example, but the cover sheet 10b shown in FIG. As described above, the end surface is obliquely formed so as to protrude outward from the one surface of the adhesive layer 16 on the separator 17 side toward the surface of the protective film 13 (“one surface opposite to the adhesive layer in the main body”). A configuration in which no step is provided on the end face can also be adopted.

  In order to manufacture the cover sheet 10b, as an example, when the cover sheet 10 is manufactured, the beam center line of the laser beam L at the second “beam irradiation process” is used as the first “beam irradiation process”. Instead of the process of deflecting the laser beam L so as to be located outside the beam center line of the laser beam L, each “beam irradiation process” from the first “beam irradiation process” to the fourth “beam irradiation process”. What is necessary is just to irradiate the intermediate body 30a with the laser beam L without changing the direction of the beam center line of the laser beam L at the time (directions of arrows L1a to L4a). Further, by irradiating the end of the area A1a with the laser beam L at a scanning speed slower than that in each of the above “beam irradiation processes”, the intermediate body 30a is cut out by one “beam irradiation process” and the cover sheet 10b is removed. It can also be manufactured.

  Also in this cover sheet 10b, since the end face is formed obliquely so as to protrude outward from the one surface of the adhesive layer 16 on the separator 17 side toward the surface of the protective film 13, the same as the cover sheet 10 described above. There is an effect. Also in the manufacturing method of the cover sheet 10b, the laser beam L is irradiated from the separator 17 side to the intermediate 30a during the “cutting process” and the laser positioned above the region A1a to be separated as the cover sheet 10 Since the laser beam L is obliquely irradiated from the device 3 toward the end of the region A1a, the same effect as the method for manufacturing the cover sheet 10 described above can be obtained.

  Further, the cutting apparatus 1 includes the laser device 3 that irradiates the laser beam L to an arbitrary part of the processing object such as the intermediates 30 and 30a by deflecting the laser beam L generated in the laser beam generation unit. The “adhesive sheet manufacturing method” for manufacturing the cover sheet 10 by executing the “cutting process” is described above, but the laser device that irradiates the laser beam L in the vertical direction with respect to the processing target and the processing target By cutting the “end of the first region” using a cutting processing device (not shown) of a type that moves at least one relative to the other, the end face is adhered to the spacer layer 15 as shown in FIG. From the part on the layer 16 side ("part on the adhesive layer side in the main body") to the surface of the protective film 13 ("on the side opposite to the adhesive layer in the main part May be formed obliquely in a stepped shape having a plurality of stepped end surfaces so pushed out outwardly increases toward the position ").

  When using this type of cutting apparatus, a laser beam L is applied to the “sheet body” from the “irradiation source” along the edge of the “first region” to be cut off as the “first part”. A “beam irradiation process” for removing a part in the thickness direction at the irradiation part of the beam L is executed a plurality of times to cut the “sheet body” at the irradiation part and at the second and subsequent “beam irradiation processes”. The laser beam L may be irradiated so that the beam center line of the beam L is positioned outside the beam center line of the laser beam L in the previous “beam irradiation process” with reference to the “first region”.

  Specifically, the beam center line (arrow L2b shown in FIG. 19) of the laser beam L in the second beam irradiation process during the cutting process for the intermediate 30a is the laser in the first beam irradiation process. The beam center line (arrow L3b) of the laser beam L at the time of the third beam irradiation processing is positioned outside the beam center line (arrow L1b) of the beam L, and the laser beam L at the time of the second beam irradiation processing. The beam center line (arrow L4b) located outside the beam center line (arrow L2b) and in the fourth beam irradiation process is the beam center of the laser beam L in the third beam irradiation process. The intermediate body 30a is cut by cutting the intermediate body 30a by performing “beam irradiation processing” a plurality of times so as to be positioned outside the line (arrow L3b). Shito 10c and may be produced. Also in the cover sheet 10c manufactured in this way, the same effects as the cover sheet 10 described above can be obtained.

  Further, the beam center line of the laser beam L in the third and fourth “beam irradiation processes” at the time of manufacturing the cover sheet 10c is referred to as the beam center line of the laser beam L in the second “beam irradiation process”. (Without changing the direction of the beam center line of the laser beam L during each “beam irradiation process” from the second “beam irradiation process” to the fourth “beam irradiation process”) By irradiating L, it is possible to adopt a manufacturing method in which the portion from the printed layer 14 side of the spacer layer 15 to the surface of the protective film 13 is linearly cut along the thickness direction.

  Further, the laser beam scanning speed is reduced at the time of the second beam irradiation during the production of the cover sheet 10c as compared with the time of the first beam irradiation (or the voltage or current of the power supplied to the laser beam generator). By increasing the energy amount itself of the laser beam L generated in the laser beam generating section), a portion of the spacer layer 15 from the portion on the printed layer 14 side to the surface of the protective film 13 is subjected to one “beam”. It is also possible to employ a manufacturing method that linearly cuts along the thickness direction by “irradiation treatment”.

  Even in a cover sheet (not shown) manufactured by adopting these manufacturing methods, a portion of the spacer layer 15 opposite to the adhesive layer 16 side, the printed layer 14, the sheet body 11, the hard coat layer 12, and a protective film. 13 (“site on the side opposite to the adhesive layer in the main body”) protrudes outward from the site on the adhesive layer 16 side in the spacer layer 15 (“site on the adhesive layer side in the main body”). A step is formed on the end face. Thereby, the cover sheet (not shown) which can show | play the effect similar to the cover sheet 10 etc. which were mentioned above can be provided.

  In addition, after the intermediate body 30a is manufactured by opening the sound hole 51 and the jog button hole 52 by performing the cutting process for the intermediate body 30, the cutting process for the intermediate body 30a is performed. Instead of the method and configuration for manufacturing the cover sheet 10, the cutting process is performed on the intermediate 30, and the irradiation site is cut by irradiating the laser beam L along the edge of the region A 1 a in the above example. Then, after that, the method and configuration for manufacturing the cover sheet 10 by opening the sound hole 51 and the jog button hole 52 may be employed. Even when such a method / configuration is adopted, the same effects as the above-described method / configuration can be obtained.

  Further, the “sheet body” is not limited to the “sheet body” having a layer structure such as the intermediate bodies 30 and 30a described above, and the “body portion” having the “sheet body” is connected to the “body portion” via the “adhesive layer”. Various “sheet bodies” to which the “separator” is affixed (for example, a protective sheet for avoiding scratching of various indicators: as an example, a hard coat layer is formed on one surface of the sheet body, and the other The adhesive layer is formed on the surface, and a protective film for avoiding scratching of the hard coat layer is attached to the hard coat layer, and the separator is attached to the adhesive layer). In doing so, the “pressure-sensitive adhesive sheet” can be manufactured by processing according to the above “pressure-sensitive adhesive sheet manufacturing method”.

  Further, the “display component” is not limited to the touch panel 140, and as an example, a touch panel (for example, a cover glass 143 is attached to one surface of the transparent electrode portion 141 via an adhesive layer 142 on the front surface side of the display body. The “adhesive sheet” can be attached to a component that is configured to have a “display component”. Further, the “touch panel body” is not limited to the “touch panel body” in which the cover glass 143 is disposed as in the touch panel 140 described above. An “adhesive sheet” can be attached to form a “display part”.

DESCRIPTION OF SYMBOLS 1 Cutting processing apparatus 2 Sheet body holding | maintenance part 3 Laser apparatus 4 Smoke exhaust apparatus 5 Camera 6 Control part 10,10a, 10b, 10c Cover sheet 11 Sheet | seat main body 12 Hard coat layer 13 Protective film 14 Print layer 15 Spacer layer 16 Adhesive layer 17 Separator 20, 30, 30a, 40 Intermediate 51 Sound hole 52 Jog button hole 100 Mobile phone 110 Display 140 Touch panel 141 Transparent electrode part 142 Adhesive layer 143 Cover glass A1a, A1b, A1c, A2a, A2b, A2c Region D Shift Quantity L Laser beam H1-H3 Groove

Claims (4)

A pressure-sensitive adhesive sheet in which a separator is stuck with a pressure-sensitive adhesive layer sandwiched between at least a main body portion having a sheet main body,
The end face is formed obliquely so as to protrude outwardly from the site on the adhesive layer side in the main body portion toward the site on the opposite side to the adhesive layer in the main body portion ,
Opposite to the adhesive layer side of the main body part at the end face, the part of the main body part opposite to the adhesive layer side protrudes outward from the part of the main body part on the adhesive layer side. The adhesive sheet in which the level | step difference is provided between the site | part of the side, and the site | part by the side of the said adhesion layer of the said main-body part in the said end surface . A display component, wherein the pressure-sensitive adhesive sheet according to claim 1 is attached to the surface of the touch panel body. A cutting process is performed on a sheet body in which a separator is attached with a pressure-sensitive adhesive layer sandwiched between at least a main body portion having a sheet body, and the first part of the sheet body is separated from the second part around the first part. A pressure-sensitive adhesive sheet manufacturing method for manufacturing a pressure-sensitive adhesive sheet comprising the first part,
A process of cutting the sheet body at the laser beam irradiation site by irradiating the laser beam from the separator side to the sheet body is performed as the cutting process ,
In the cutting process, the laser beam is irradiated obliquely from the irradiation source positioned above the first region to be cut off as the first part toward the end of the first region, and the laser beam is applied to the sheet body. A pressure-sensitive adhesive sheet manufacturing method in which the sheet body is cut by performing a beam irradiation process of irradiating and removing a part in the thickness direction at an irradiation site of the laser beam a plurality of times . A groove having a depth reaching the main body by irradiation with the laser beam is formed in the irradiation site during the first beam irradiation processing, and the laser beam from the irradiation source to the irradiation site during the subsequent beam irradiation processing. 4. The adhesive according to claim 3 , wherein the laser beam is irradiated such that a beam center line of the laser beam is positioned outside the beam center line of the laser beam in the first beam irradiation process with respect to the first region. Sheet manufacturing method.

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