JP6218038B2 - Laminate including glass film, method for producing laminate including glass film, and method for producing glass article - Google Patents

Description

  The present invention relates to a laminate including a glass film, a method for manufacturing a laminate including a glass film, and a method for manufacturing a glass article.

  2. Description of the Related Art In recent years, with the progress of production technology for strip glass or plate glass, thinning of strip glass and the like that can be manufactured is progressing. As an example, a glass film having a certain flexibility, for example, a thickness dimension of 300 μm or less has been developed and is being applied to various applications. In particular, in recent years, in addition to the inherent transparency and corrosion resistance (chemical resistance) of glass, we are also expanding the application to applications that require flexibility (elastic deformation) that can be possessed because it is thin. is there.

  Such a thin glass article is usually obtained by cutting into a predetermined shape from a glass film ribbon as a molded product. However, it is difficult to cut out this type of glass article because the glass film ribbon as a base material is very thin, and there is a problem that handling including conveyance after cutting becomes difficult.

  Here, for example, in Patent Document 1, a glass plate is attached to a pressure-sensitive adhesive sheet (cut workpiece), and a predetermined number of glass plates are obtained by performing a predetermined cutting operation on the cut workpiece. A technique for cutting into small glass plates has been proposed.

  Moreover, in patent document 2, after sticking an adhesive sheet to plate-like glass and separating the plate-like glass into a plurality of glass pieces by cutting with a blade, the back surface of the adhesive sheet is pushed up with a pin, A technique has been proposed in which after a glass piece is partially exfoliated, the glass piece is adsorbed by an adsorption device and conveyed to the next process.

JP 2000-103634 A JP-A-2005-353921

  By the way, since the actual glass article has various shapes depending on its application, the cutout area of the glass article is set so as not to include the peripheral portion of the glass film ribbon, and the glass is formed along the periphery of the set cutout area. It is necessary to cut out a glass article having a predetermined shape by cutting the film ribbon. Therefore, at this time, if the adhesive sheet is pasted on the glass film ribbon using the technique described in Patent Document 1 and the like, and the glass film ribbon is cut with the adhesive sheet pasted, the glass article can be easily cut out. Can do. Moreover, if only the glass film ribbon is cut, the glass article can be conveyed to the next step or the like in a state where the glass article is attached to the adhesive sheet.

  However, since the glass film ribbon is thinner than the conventional plate-like glass, it is inevitably fragile against concentrated loads and local deformation. Therefore, if the end of the product part (glass article) is pinched or turned to be peeled off from the pressure-sensitive adhesive sheet, the product part (glass article) may be easily cracked. Moreover, in patent document 1, although UV processing is performed in order to reduce adhesive force, there exists a problem that production cost will become high.

  In view of the above circumstances, in the present specification, it is a technical problem to be solved by the present invention to prevent a crack and to safely and easily take out a glass article from a glass film without causing an increase in cost.

  The solution to the above problem is achieved by a laminate including the glass film according to the present invention. That is, this laminated body is a laminated body that includes a glass film and a holding sheet that holds the glass film, and is bonded to the holding sheet with an adhesive force that can be peeled off. The holding sheet is flexible. In the glass film, a cut line portion that penetrates the glass film in the thickness direction is formed, and the cut line portion includes a dividing line portion that divides the glass film into a product portion and a non-product portion. And a peeling auxiliary line portion formed in the non-product portion and extending so as to straddle the product portion.

  As described above, in the present invention, a laminate is formed by attaching a glass film to a flexible holding sheet with an adhesive force capable of peeling off the glass film, and the glass film is separated from the product part as a score line part. The dividing line part divided | segmented into a product part and the peeling auxiliary | assistant line part extended so that a product part might be straddled were formed in the glass film. Thus, by providing the dividing line part and the peeling auxiliary line part as the cut line part, the product part in a state of being attached to the holding sheet can be peeled relatively easily. For example, when the laminated body is bent along the peeling auxiliary line part, the holding sheet is bent with a relatively large curvature, whereas the product part is not formed with the peeling auxiliary line part, so that the product part is bent. The degree (that is, the curvature at the time of deformation) is relatively small. Since the curvature difference is generated between the holding sheet and the glass product part in this way, the product part is partially peeled off from the holding sheet, so that the entire product part can be easily held by holding the peeled part. Can be peeled off. Further, since the product part is peeled off by the bending operation so that a part of the product part is lifted up naturally, the product part can be safely peeled and taken out without causing a crack or the like. Alternatively, when the laminate is pulled along the plane direction, the holding sheet greatly extends in the peeling auxiliary line portion, and the holding sheet extends in the same direction also in the dividing line portion that is continuous or close to the peeling auxiliary line portion. Therefore, the product part is naturally peeled from the side of the greatly extending parting line part or the end part is easily lifted, so that the product part can be easily taken out. At this time, since the adhesive sheet can be peeled off by simply pulling the adhesive sheet in the plane direction, there is no possibility of giving a local load or displacement (deformation) to the product part. Therefore, it can peel from a holding sheet, without damaging a product part.

  Moreover, as for the laminated body which concerns on this invention, the peeling auxiliary | assistant line part may be extended from the dividing line part to the peripheral part of a glass film.

  By comprising in this way, the non-product part of a glass film will be in the state parted by the peeling auxiliary | assistant line part over the whole area | region from the peripheral part of a product part to the peripheral part of a glass film. Therefore, the holding sheet can be folded without resistance along the peeling auxiliary line portion by bending the laminated body including the glass film along the peeling auxiliary line portion, for example. If it can be bent without resistance, the holding sheet can be bent easily, so the difference in curvature between the product part and the holding sheet can be further increased, and the product part can be lifted more securely from the holding sheet. The product part can be peeled off more safely. Of course, even when the laminate is pulled along the plane direction, it is preferable that the separation assisting line portion and the dividing line portion are connected, because the holding sheet becomes easier to extend at the dividing line portion.

  Moreover, as for the laminated body which concerns on this invention, the peeling auxiliary | assistant line part may be extended linearly.

  The shape of the peeling assisting line portion is not particularly limited, but it is preferable that the peeling assisting line portion extends linearly, for example, considering the ease of actual folding operation. When the peeling assisting line portion has such a shape, the laminate can be easily folded along the peeling assisting line part. Therefore, it becomes easy to peel a product part from a holding sheet still more safely. Further, even when the laminate is pulled along the plane direction, it is preferable that the peeling assisting line portion extends linearly because the holding sheet is easily stretched in the entire longitudinal direction of the peeling assisting line portion.

  Further, in the laminated body according to the present invention, the cut line portion has a plurality of peeling auxiliary line portions, and the plurality of peeling auxiliary line portions extend so as to straddle the product portion from different directions. May be.

  By providing a plurality of auxiliary peeling lines as described above, a person who should take out the product part (an operator or a carrier of the next process that forms the cutting line, a person concerned at the shipping destination, etc.) The product part can be peeled and taken out by bending or pulling the laminate from any direction. In addition, when the laminate is bent or pulled along one peeling auxiliary line part, even if the target product part is not partially peeled off the holding sheet, it is laminated along the other peeling auxiliary line part. The product part can be peeled off and taken out by bending or pulling the body. Therefore, it is possible to increase the degree of freedom of taking out the product part without being affected by the work content and the environment, and more reliably take out the product part.

  Moreover, as for the laminated body which concerns on this invention, the cut line part may penetrate the glass film to the thickness direction, and may be formed even to a part of holding sheet.

  In this way, the cut line part penetrates the glass film in the thickness direction and is formed up to a part of the holding sheet, so that the holding sheet can be more stretched along the peeling auxiliary line part when the laminate is bent. Can be bent large (with large curvature). Or at the time of the tension | pulling along the plane direction of a laminated body, a holding sheet can be extended more largely in a peeling auxiliary | assistant line part. Therefore, the product part can be easily lifted from the holding sheet, and the product part can be peeled off more safely and reliably. In addition, since the glass film is very thin, it is difficult to form the cut line portion so as to penetrate only the glass film in the thickness direction. The thickness can be controlled relatively easily. Therefore, the cut line portion can be easily formed.

  Moreover, the laminated body which concerns on this invention may be further provided with the contact bonding layer which is arrange | positioned between a glass film and a holding sheet, and adhere | attaches it with the adhesive force of the grade which can peel a glass film to a holding sheet. .

  By configuring the laminate in this manner, a known adhesive member such as a double-sided adhesive tape can be employed, and an adhesive layer can be easily interposed between the holding sheet and the glass film. In this case, a wide range of materials can be selected for the holding sheet without considering the adhesiveness and adhesion to the glass film. Therefore, it becomes possible to construct a laminate more easily and at low cost.

  In this case, in the laminate according to the present invention, the adhesive force between the adhesive layer and the glass film may exceed the adhesive force between the adhesive layer and the holding sheet. Alternatively, the adhesive force between the adhesive layer and the holding sheet may exceed the adhesive force between the adhesive layer and the glass film.

  Since the product part cut out (taken out) along the dividing line part from the glass film is used for various applications, in some cases, the product part itself may be directly attached to another part. In such a case, for example, when the product part is peeled off by preparing a material in which the adhesive force between the adhesive layer and the glass film exceeds the adhesive force between the adhesive layer and the holding sheet, the adhesive layer is integrated. A product part in an attached state can be obtained. Therefore, it can be affixed to other parts as it is, and work efficiency improves. Of course, if the adhesive layer and the holding sheet have an adhesive force exceeding the adhesive force between the adhesive layer and the glass film, the adhesive layer remains on the holding sheet side when the product part is peeled off. Therefore, it becomes possible to use this product part for applications that do not stick to other parts (applications in which both the front and back surfaces are smooth surfaces).

  In the laminate according to the present invention, the holding sheet may be formed of a material having excellent stretchability.

  If the holding sheet is formed of a material having excellent stretchability, the holding sheet is stretched more greatly at the peeling assisting line portion, particularly when the laminate is pulled along the plane direction. Therefore, it is possible to increase the shear peeling force between the product part and make it easier to peel off the product part.

  Moreover, the laminated body which concerns on this invention may make a glass film strip | belt shape, and the some dividing line part may be formed in the glass film along the longitudinal direction.

  The glass film is usually formed into a strip shape depending on the production method. Therefore, if a plurality of dividing line portions are formed along the longitudinal direction of the glass film having the strip shape, a homogeneous product portion is taken out without being affected by the thickness distribution in the width direction (direction orthogonal to the longitudinal direction). be able to.

  Moreover, in this case, the laminate according to the present invention is a first peeling auxiliary line portion that extends so that the peeling auxiliary line portion extends in a direction orthogonal to the longitudinal direction of the glass film and straddles each product portion. And the 2nd peeling auxiliary | assistant line part extended so that a some product part may be straddled along the longitudinal direction of a glass film may be sufficient.

  Thus, if a peeling auxiliary | assistant line part is provided, a bending direction or a tension | pulling direction can be selected according to a desired taking-out aspect. For example, when it is desired to take out product parts one by one, the laminated body may be bent or pulled along the first peeling auxiliary line part, and when it is desired to take out a plurality of product parts at a time, the second peeling is performed. It is sufficient to bend or pull the laminate along the auxiliary line portion.

  Further, in the laminate according to the present invention, the thickness dimension d and the width dimension L are set to predetermined sizes so that the ratio L / d of the width dimension L to the thickness dimension d of the glass film is 10 or more. It may be a thing, Preferably it may be set to 20 or more.

  The present invention can be applied to a laminate including a glass film regardless of the size of the thickness, but in particular, a relatively thin glass film satisfying the above dimensional relationship that makes it difficult to peel the product portion from the holding sheet without cracking. It is suitable for this.

  Moreover, the solution of the said subject is achieved also by the manufacturing method of the laminated body containing the glass film which concerns on this invention. That is, the manufacturing method of this laminated body is a bonding process for forming a laminated body including a glass film by bonding a glass film to a flexible holding sheet with a bonding force that can be peeled off, and a glass film. And a cut line portion forming step for forming a cut line portion that penetrates the glass film in the thickness direction. The cut line portion includes a dividing line portion that divides the glass film into a product portion and a non-product portion, and a non-product. It has a peeling auxiliary line part that is formed in the part and extends so as to straddle the product part, and is characterized by forming a dividing line part and a peeling auxiliary line part on the glass film in the cut line part forming step.

  Thus, also by the manufacturing method which concerns on this invention, the product part of the state stuck on the holding sheet can be peeled comparatively easily. For example, when the laminated body is bent along the peeling auxiliary line portion, the holding sheet is bent with a relatively large curvature, whereas the product portion is not formed with the peeling auxiliary line portion, so that the product portion is bent. The degree (curvature during deformation) is relatively small. Since the curvature difference is generated between the holding sheet and the glass product part in this way, the product part is partially peeled off from the holding sheet, so that the entire product part can be easily held by holding the peeled part. Can be peeled off. Further, since the product part is peeled off by the bending operation so that a part of the product part is lifted up naturally, the product part can be safely peeled and taken out without causing a crack or the like. Alternatively, when the laminate is pulled along the plane direction, the holding sheet greatly extends in the peeling auxiliary line portion, and the holding sheet extends in the same direction also in the dividing line portion that is continuous or close to the peeling auxiliary line portion. Therefore, the product part is naturally peeled from the side of the greatly extending parting line part or the end part is easily lifted, so that the product part can be easily taken out. At this time, since the adhesive sheet can be peeled off by simply pulling the adhesive sheet in the plane direction, there is no possibility of giving a local load or displacement (deformation) to the product part. Therefore, it can peel from a holding sheet, without damaging a product part.

  Moreover, the manufacturing method of the laminated body which concerns on this invention may form the cutting line part which has a parting line part and a peeling auxiliary | assistant line part using a laser in a cutting line part formation process.

  If a cut line part having a dividing line part and a peeling auxiliary line part is formed using a laser, a dividing line part and a peeling auxiliary line part having a predetermined shape can be easily formed without providing a preliminary crack or the like on the glass film. can do. Since the shape of each line part can be set by the scanning trajectory of the laser light, the degree of freedom in shape is high. In addition, there is an advantage that the formation depth of the cut line portion can be easily controlled by adjusting the focal length of the laser beam.

  Moreover, the manufacturing method of the laminated body which concerns on the above description is a product part by bending the holding sheet | seat of the laminated body manufactured by the method, for example along a peeling auxiliary | assistant line part, and peeling a product part from a holding sheet. It is also possible to provide the glass article as a method for producing a glass article. Alternatively, it is provided as a method for producing a glass article, in which a product part is obtained as a glass article by pulling the holding sheet of the laminate produced by the above method along the plane direction and peeling the product part from the holding sheet. Is also possible.

  As described above, according to the present invention, it is possible to safely and easily take out a glass article from a glass film without preventing cracks and increasing costs.

It is a top view of the layered product concerning one embodiment of the present invention. It is AA sectional drawing of the laminated body shown in FIG. It is BB sectional drawing of the laminated body shown in FIG. It is a top view for demonstrating the process of forming a parting line part among the cut line parts of the laminated body shown in FIG. It is a top view for demonstrating the process of forming a peeling auxiliary | assistant line part among the cut line parts of the laminated body shown in FIG. It is an AA principal part expanded sectional view at the time of bending the laminated body shown in FIG. 1 along the peeling auxiliary | assistant line part. It is a BB principal part expanded sectional view at the time of bending the laminated body shown in FIG. 1 along the peeling auxiliary | assistant line part. It is a top view of the laminated body which concerns on other embodiment of this invention. It is CC principal part expanded sectional drawing at the time of bending the laminated body shown in FIG. 8 along the peeling auxiliary | assistant line part.

  Hereinafter, an embodiment of a laminate including a glass film, a method for manufacturing a laminate including a glass film, and a method for manufacturing a glass article according to the present invention will be described with reference to FIGS.

  FIG. 1: has shown the top view of the laminated body 1 which concerns on one Embodiment of this invention. Moreover, FIG.2 and FIG.3 has each shown sectional drawing in the different site | part of the laminated body 1 shown in FIG. As can be seen from these drawings, the laminate 1 includes a glass film 2, an adhesive layer 3, and a holding sheet 4, and the adhesive layer 3 is interposed between the glass film 2 and the holding sheet 4. It is laminated like this.

  The glass film 2 is formed into a strip shape as shown in FIG. The thickness dimension of the glass film 2 can be selected without any particular limitation, and is set to, for example, 300 μm or less, preferably set to less than 100 μm, more preferably set to 50 μm or less, and more preferably It is set to 30 μm or less, more preferably 15 μm or less. In addition, although there is no restriction | limiting in particular about a lower limit, From a viewpoint on a shaping | molding technique, it is good to set to 1 micrometer or more, for example.

  The width dimension is not particularly limited, but may be appropriately set according to the dimension of the glass article to be taken out. For example, the width dimension is set to be 2 to 5 times the width dimension of the glass article. . When expressed as a specific numerical value, the width dimension of the glass film 2 is set to, for example, 100 mm or less, preferably 50 mm or less.

  Further, when viewed in relation to the thickness dimension and the width dimension, the glass film 2 is preferably formed so that L / d ≧ 10 when the thickness dimension is d and the width dimension is L. More preferably, / d ≧ 20.

  Moreover, it does not specifically limit about the composition of the glass film 2, For example, alkali containing aluminosilicate glass, an alkali free glass, a borosilicate glass, etc. are employable.

  Further, the glass film 2 can be molded by any known molding technique such as an overflow down draw method without any particular limitation. As an example, when the glass film 2 having a thickness dimension of 30 μm or less is molded, first, the primary molded body of the glass film 2 is molded by the known molding technique, and the primary molded body is subjected to secondary molding by the redraw method. It is possible to mold to the thickness dimension of the final product by heating and stretching the primary molded body.

  In the present embodiment, the adhesive layer 3 is separate from the glass film 2 and the holding sheet 4, and for example, an acrylic double-sided adhesive tape or the like is used. As for the adhesive strength, the one that is applied to the glass film 2 with an adhesive force that can be peeled off from the edge by a human hand from the state of being applied once is used. The thickness dimension of the adhesive layer 3 is not particularly limited, but is set to, for example, 1 μm or more and 50 μm or less, and preferably 5 μm or more and 20 μm or less. Further, the width dimension of the adhesive layer 3 is equal to or smaller than the smaller one of the width dimensions of the glass film 2 and the holding sheet 4 so as not to protrude from either the glass film 2 or the holding sheet 4 in a plan view. It is preferable that

  The holding sheet 4 holds the glass film 2 via the adhesive layer 3 and is formed of a flexible material. Here, “having flexibility” means that the holding sheet 4 is damaged to the extent that a predetermined curvature difference can be generated between a product portion 6 of the glass film 2 and a holding sheet 4 to be described later. It has a deformability that can be bent without any problem. Resin is suitable as a material exhibiting such properties, and an example thereof is PET. Of course, it is also possible to form the holding sheet 4 with a structure made of a material other than resin, such as paper or metal foil.

  The thickness dimension of the holding sheet 4 is not particularly limited, and is set to, for example, 20 μm or more and 500 μm or less, preferably 20 μm or more and 100 μm or less, more preferably 30 μm or more and 50 μm or less. Further, considering the ease of handling as the laminate 1, the thickness dimension of the holding sheet 4 is desirably larger than the thickness dimension of the glass film 2.

  Further, the width of the holding 4 sheet and the glass film 2 may be different in size, but from the viewpoint of safety during handling, as shown in the present embodiment (see FIG. 1), the holding sheet 4 is It is preferable that the glass film 2 protrudes from the glass film 2 (the width dimension of the holding sheet 4 is larger than the width dimension of the glass film 2) because the risk of the glass film 2 being cracked due to unexpected contact is small.

  In the laminated body 1 having the above-described configuration, the glass film 2 has a cut line portion 5 that penetrates the glass film 2 in the thickness direction. This incision line part 5 is formed in the non-product part 7 and the dividing line part 8 which divides the glass film 2 into the product part 6 and the non-product part 7, and assists the peeling from the holding sheet 4 of the product part 6. And a peeling assisting line portion 9.

  Among these, the dividing line part 8 makes a closed curve shape in the state which planarly viewed the glass film 2, and is formed over the perimeter of the product part 6. FIG. In the present embodiment, the dividing line portion 8 has a perfect circle shape, and thus the product portion 6 divided from the non-product portion 7 by the dividing line portion 8 also has a perfect circular shape. Moreover, in this embodiment, the some dividing line part 8 is formed along the longitudinal direction of the glass film 2 which makes a strip | belt shape, and the product part 6 of the same number as the dividing line part 8 can be cut out. In addition, although the case where the one dividing line part 8 is formed over the width direction of the glass film 2 is illustrated in FIG. 1, of course, two or more dividing line parts 8 may be formed over the width direction. Is possible.

  The peeling auxiliary line portion 9 is formed in the non-product portion 7 and extends so as to straddle the product portion 6. In the present embodiment, the same number of peeling assisting line portions 9 as the number of product portions 6 extend linearly so that each product portion 6 straddles the direction perpendicular to the longitudinal direction of the glass film 2, that is, the width direction. Each peeling auxiliary line portion 9 extends from the dividing line portion 8 to the peripheral edge portion of the glass film 2. Thereby, the non-product part 7 is completely divided in the longitudinal direction.

  Moreover, both these dividing line part 8 and peeling auxiliary | assistant line part 9 have penetrated the glass film 2 in the thickness direction. In the present embodiment, the dividing line portion 8 and the peeling assisting line portion 9 penetrate the glass film 2 and the adhesive layer 3 in the thickness direction as shown in FIGS. Is formed.

  The cut line portion 5 having the above shape is formed in the laminate 1 through the following steps, for example. First, as shown in FIG. 4, a laser beam irradiation device 10 is disposed above the laminate 1 before the cut line portion 5 is formed, and a predetermined laser beam is irradiated toward the glass film 2 positioned below. However, the laser beam (laser beam irradiation device 10) is scanned along the first planned cutting line 11 set in advance. Thereby, the dividing line part 8 having the same shape as the planned cutting line 11 is formed, and the glass film 2 is divided into the product part 6 and the non-product part 7.

  After forming the dividing line portion 8 in this manner, the peeling assisting line portion 9 is formed. That is, as shown in FIG. 5, a laser beam irradiation device 10 is arranged above the laminate 1 before forming the auxiliary peeling line 9, and a predetermined laser beam is irradiated toward the glass film 2 positioned below. Meanwhile, the laser beam (laser beam irradiation device 10) is scanned along the second scheduled cutting line 12 set in advance. As a result, a plurality of separation assisting line portions 9 that extend so as to straddle each product portion 6 in the width direction are formed in the non-product portion 7.

  The laminate 1 having the cut line portion 5 formed as described above has the following advantages particularly when the product portion 6 is peeled off.

  That is, when it is considered that the product part 6 is peeled off by bending the laminated body 1 toward one side of the front and back (here, the holding sheet 4 side), as shown in FIG. It bends greatly (bends) along the auxiliary peeling line portion 9 formed in the direction. Here, the peeling auxiliary line portion 9 is formed in the non-product portion 7 and extends in the width direction so as to straddle the product portion 6 formed in the center in the width direction of the glass film 2. Therefore, when the laminate 1 is bent as described above, the holding sheet 4 bends with a relatively large curvature, whereas the degree of bending of the product portion 6 in which the peeling assisting line portion 9 is not formed (that is, the curvature at the time of deformation). ) Is relatively small. Therefore, a curvature difference arises between the holding sheet 4 and the product part 6 made of glass, and the peeling force of the product part 6 based on this difference in curvature results in an adhesive force (adhesive force) between the product part 6 and the holding sheet 4. By exceeding, the product part 6 will peel off from the edge part by the side of the bending (FIG. 7). Therefore, the entire product portion 6 as a glass article can be easily peeled from the holding sheet 4 simply by pulling the product portion 6 away from the holding sheet 4 with the peeled portion. Moreover, since it peels off naturally as it lifts from the end part of the product part 6 by the bending operation, the product part 6 can be safely peeled and taken out without causing a crack or the like. In particular, as in this embodiment, when the product part 6 is circular and the product part 6 is peeled in the same way no matter what direction it is peeled off (unlike a rectangle or the like, there is no anisotropy in terms of ease of peeling). The present invention is particularly effective.

  Moreover, in this embodiment, since the cut line part 5 (especially peeling auxiliary line part 9) is formed even to a part of the holding sheet 4, the holding sheet 4 is made to peel auxiliary line at the time of the bending of the laminated body 1. It can be easily and greatly bent along the portion 9. As a result, the product portion 6 can be more easily taken out (easily removed).

  At this time, the peeling assisting line portions 9 extend in a straight line so as to straddle each product portion 6 in the width direction of the glass film 2, and each peeling assisting line portion 9 extends from the dividing line portion 8. By extending to the peripheral edge of the glass film 2, the holding sheet 4 can be easily bent with a large curvature. This also facilitates removal of the product portion 6.

  As mentioned above, although the laminated body containing the glass film which concerns on this invention, the manufacturing method of a glass laminated body, and one embodiment of the manufacturing method of a glass article were demonstrated, this laminated body and the manufacturing method of a laminated body are naturally this book. Any form may be taken within the scope of the invention.

  For example, in the above embodiment, the case where the peeling assisting line portion 9 that straddles each product portion 6 in one direction is illustrated in the glass film 2, but of course, the product portion 6 extends so as to straddle from a plurality of directions, It is also possible to form a plurality of peeling assisting line portions 9 for one product portion 6. FIG. 8 shows an example thereof, and the laminate 21 shown in FIG. 8 is formed by forming a cut line portion 25 on a glass film 22 attached to a holding sheet 24. The cut line portion 25 includes a dividing line portion 28 that divides the glass film 22 into a product portion 26 and a non-product portion 27, and a peeling auxiliary line portion that is formed in the non-product portion 27 and assists bending of the holding sheet 24. The peeling auxiliary line portion has a first peeling auxiliary line portion 29 extending in a direction orthogonal to the longitudinal direction of the glass film 22 and straddling each product portion 26, and glass. And a second peeling assisting line portion 30 extending across the plurality of product portions 26 along the longitudinal direction of the film 22.

  Thus, if the peeling auxiliary line part (the 1st peeling auxiliary line part 29, the 2nd peeling auxiliary line part 30) extended in two directions is provided, a bending direction will be selected according to a desired taking-out aspect. be able to. For example, when it is desired to take out the product parts 26 one by one, the laminated body 21 may be bent along the first peeling assisting line part 29. When it is desired to take out a plurality of product parts 26 at a time, the second part It is sufficient to bend the laminated body 21 along the peeling auxiliary line portion 30. Therefore, by using the laminate 21 according to the present embodiment, it is possible to increase the degree of freedom in taking out the product portion 26.

  In the above description, the peeling assisting line portions 9, 29, and 30 are all formed so as to pass (straddle) the centers of the product portions 6 and 26 having a perfect circle shape. There is no need to limit. Since there is no problem if sufficient lifting from the ends of the product parts 6 and 26 when the laminates 1 and 21 are folded along the peeling assisting line parts 9, 29 and 30, for example, the folding side is in the longitudinal direction in advance. Or when it is decided in any one of the width directions, you may shift the formation position of the peeling auxiliary | assistant line | wire part 9,29,30 to the bending side (lifting start side). Of course, from the viewpoint of maximizing the benefit of improving the bending flexibility, the separation assisting line portions 9, 29, 30 are formed so as to extend across the centers of the product portions 6, 26 as shown in the figure. Is good.

  Moreover, in the said embodiment, when the adhesive layer 3 interposes between the glass film 2 and the holding sheet 4, the case where the adhesive layer 3 remains integrally on the glass film 2 side (product part 6 side) after peeling. Although illustrated, of course, depending on the application, it may be left on the holding sheet 4 side. FIG. 9 illustrates a case where the adhesive layer 23 interposed between the glass film 22 and the holding sheet 24 is peeled off from the holding sheet 24 integrally with the product portion 26 in the laminate 21 shown in FIG. That is, in this case, the selection of the adhesive layer 23 is adjusted so that the adhesive force between the glass film 22 and the adhesive layer 23 exceeds the adhesive force between the holding sheet 24 and the adhesive layer 23. 9 illustrates the case where the cut line portion 25 (particularly the dividing line portion 28) is formed up to a part of the holding sheet 24. However, even if the adhesive layer 23 remains on the holding sheet 24 side. If it is good, the cut line portion 25 does not need to penetrate the adhesive layer 23 in the thickness direction.

  In the above embodiment, the case where the adhesive layers 3 and 23 are double-sided adhesive tapes has been exemplified. However, other forms, for example, a liquid adhesive is applied on the holding sheets 4 and 24 in a thin film form, The laminated bodies 1 and 21 may be configured by placing the glass films 2 and 22 on the surface.

  Moreover, in the said embodiment, although the case where it formed separately from the glass films 2 and 22 or the holding sheets 4 and 24 was illustrated, the adhesive sheet (for example) which has integrally the adhesive layers 3 and 23 and the resin-made base | substrates (for example) It is also possible to employ an adhesive tape as an integral part of the adhesive layers 3 and 23 and the holding sheets 4 and 24.

  Of course, the adhesive layers 3 and 23 are not necessarily required. As long as other requirements are satisfied, for example, the holding sheets 4 and 24 may be made of glass and fixed to each other by so-called charging adhesion.

  Moreover, in the above description, as a method of taking out the product parts 6 and 26 from the laminates 1 and 21, a method of bending the laminates 1 and 21 along the auxiliary peeling line parts 9, 29, and 30 has been exemplified. The product parts 6 and 26 can be taken out by other methods. For example, by pulling the laminated body 1 along the longitudinal direction of the laminated body 1 shown in FIG. 1, the holding sheet 4 is greatly stretched by the peeling assisting line portion 9, and thereby the product portion 6 is peeled from the holding sheet 4 and taken out. Can be adopted. In this case, the holding sheet 4 greatly extends in the pulling direction, and the holding sheet 4 extends in the same direction also in the dividing line portion 8 that is continuous with the auxiliary peeling line portion 9. Therefore, the product part 6 is naturally peeled from the side of the greatly extending parting line part 8, or the end part of the product part 6 is easily lifted, so that the product part 6 can be easily taken out. At this time, since the adhesive sheet 4 can be peeled off by simply pulling the adhesive sheet 4 in the plane direction, there is no possibility of applying a local load or displacement (deformation) to the product portion 6. Therefore, it can peel off from a holding sheet, without damaging the product part 6. FIG.

  In addition, when employ | adopting the method of peeling and taking out the product part 6 from the holding sheet 4 with the method mentioned above, it is good to form a holding sheet with the material excellent in the elasticity. By providing the holding sheet 4 with great stretchability in this way, the holding sheet 4 is stretched more greatly by the peeling assisting line portion 9 particularly when the laminate 1 is pulled along the plane direction. Therefore, the shear peeling force between the product part 6 can be increased and the product part 6 can be more easily peeled off.

  Moreover, in the above description, as the laminated bodies 1 and 21 according to the present invention, the auxiliary peeling line portions 9, 29, and 30 are extended so as to straddle the product portions 6 and 26. Depending on the configuration, the product parts 6 and 26 can be peeled off from the holding sheets 4 and 24 relatively easily. For example, as another invention, it is conceivable that the peeling assisting line parts 9, 29, 30 are formed so as to be in contact with the peripheral parts of the product parts 6, 26, that is, the dividing line parts 8, 28 having a closed curve shape. According to this structure, the edge part (end surface) of the product parts 6 and 26 is exposed by the bending along the peeling auxiliary | assistant line | wire parts 9, 29, and 30 of the holding sheets 4 and 24. FIG. Therefore, the product parts 6 and 26 can be removed from the holding sheets 4 and 24 relatively easily.

  Moreover, in the above description, as the cut line portions 5 and 25 (the dividing line portions 8 and 28 and the peeling auxiliary line portions 9, 29 and 30), all are illustrated as being continuously extended. There is no need to limit. Although not shown in any of the drawings, it is possible to adopt a form in which a part is interrupted in the middle, a form formed intermittently at a predetermined interval such as a perforation, or the like. In short, by bending the laminates 1 and 21 or pulling along the plane direction, the product is folded or greatly stretched by the peeling assisting wire portion 9, and the product portion 6 is peeled off from the holding sheet 4, so that the non-product As long as the part 7 can be completely divided, the form is arbitrary.

  Moreover, the laminated body containing the glass film which concerns on the above description, the manufacturing method of the laminated body containing a glass film, and the glass article (product part 6, 26) which can be acquired by the manufacturing method of a glass article are applied to various uses. Is possible. For example, in addition to the inherent transparency and corrosion resistance (chemical resistance) of glass, it can be applied to applications that require flexibility (elastic deformation), and hence vibration resistance, because it is thin. . Further, the shape of the product parts 6 and 26 is not limited to the circular shape shown in the figure, and the dividing line parts 8 and 28 are formed into shapes according to applications such as an elliptical shape, a polygonal shape such as a rectangle, and a shape obtained by rounding the corners. It can be taken out by forming.

1,21 Laminate 2,22 Glass film 3,23 Adhesive layer 4,24 Holding sheet 5,25 Cutting line part 6,26 Product part 7,27 Non-product part 8,28 Dividing line part 9,29,30 Peeling aid Line part 10 Laser beam irradiation device 11, 12 Planned cutting line

Claims (16)

A laminated body comprising a glass film and a holding sheet for holding the glass film, the glass film being attached to the holding sheet with an adhesive force capable of being peeled off,
The holding sheet has flexibility,
The glass film has a cut line portion that penetrates the glass film in the thickness direction,
The cut line portion includes a dividing line portion that divides the glass film into a product portion and a non-product portion, and a peeling auxiliary line portion that is formed in the non-product portion and extends across the product portion. A laminate including a film.   The said peeling auxiliary | assistant line part is a laminated body containing the glass film of Claim 1 extended from the said dividing line part to the peripheral part of the said glass film.   The said peeling auxiliary | assistant line part is a laminated body containing the glass film of Claim 1 or 2 currently extended linearly.   The cut line portion has a plurality of peeling auxiliary line portions, and the plurality of peeling auxiliary line portions extend so as to straddle the product portion from different directions. The laminated body containing the glass film of description.   The laminated body containing the glass film in any one of Claims 1-4 in which the said cut line part penetrates the said glass film to the thickness direction, and is formed to a part of said holding sheet.   The adhesive layer which is arrange | positioned between the said glass film and the said holding sheet, and adhere | attaches the said glass film with the adhesive force of the grade which can be peeled to the said holding sheet is further provided. The laminated body containing the glass film of crab.   The laminate including the glass film according to claim 6, wherein an adhesive force between the adhesive layer and the glass film exceeds an adhesive force between the adhesive layer and the holding sheet.   The laminate including the glass film according to claim 6, wherein an adhesive force between the adhesive layer and the holding sheet exceeds an adhesive force between the adhesive layer and the glass film.   The laminate including the glass film according to claim 1, wherein the holding sheet is formed of a material having excellent stretchability. The glass film has a band shape,
The laminated body containing the glass film in any one of Claims 1-9 in which the said some dividing line part is formed in the said glass film along the longitudinal direction.   The peeling auxiliary line part extends along a direction perpendicular to the longitudinal direction of the glass film and extends across the product parts, and a longitudinal direction of the glass film. The laminated body containing the glass film of Claim 10 which has a 2nd peeling auxiliary | assistant wire | line part extended so that the said several product part may be straddled.   The thickness dimension d and the width dimension L are set to a predetermined size so that the ratio L / d of the width dimension L to the thickness dimension d of the glass film is 10 or more. The laminated body containing the glass film of description. An affixing step of forming a laminate including the glass film by affixing the glass film to the holding sheet having flexibility with a releasable affixing force;
The glass film comprises a cut line part forming step for forming a cut line part penetrating the glass film in the thickness direction,
The cut line portion includes a dividing line portion that divides the glass film into a product portion and a non-product portion, and a peeling auxiliary line portion that is formed in the non-product portion and extends across the product portion. ,
The manufacturing method of the laminated body containing a glass film which forms the said parting line part and the said peeling auxiliary | assistant line part in the said glass film in the said cut line part formation process.   The manufacturing method of the laminated body containing the glass film of Claim 13 which forms the said cut line part which has the said parting line part and the said peeling auxiliary | assistant line part using a laser in the said cut line part formation process.   The said product part is glass articles by bending the said holding sheet of the laminated body manufactured by the method of Claim 13 or 14 along the said peeling auxiliary | assistant line part, and peeling the said product part from the said holding sheet. The manufacturing method of the glass article obtained as.   The glass which obtains the said product part as a glass article by pulling the said holding sheet of the laminated body manufactured by the method of Claim 13 or 14 along the plane direction, and peeling the said product part from the said holding sheet. Article manufacturing method.

Images