阅读说明：本技术 层叠体及其制造方法 (Laminate and method for producing same ) 是由 植村仁 青木浩祐 宫坂浩司 于 2018-04-17 设计创作，主要内容包括：本发明涉及利用粘合剂粘合至少包含玻璃的多个部件而成的层叠体,其特征在于,在被粘合的上述玻璃的层叠面的端部具有倒角部,且在上述倒角部附着有上述粘合剂。根据本发明的层叠体,粘合剂不会溢出至附着于玻璃以及部件的侧面,且对各部件的特性、使用用途也不会给予影响。(The present invention relates to a laminate in which a plurality of members including at least glass are bonded with an adhesive, the laminate having a chamfered portion at an end of a lamination surface of the bonded glass, and the adhesive being adhered to the chamfered portion. According to the laminate of the present invention, the adhesive does not overflow to the side surfaces of the glass and the member, and does not affect the characteristics and the use of each member.)

1. A laminate produced by bonding a plurality of members including at least glass with an adhesive,

The laminated body is characterized in that,

The laminated glass has a chamfered portion at an end of the laminated surface to which the glass is bonded, and the adhesive is attached to the chamfered portion.

2. The laminate according to claim 1,

The adhesive is at least one selected from the group consisting of a UV curable resin, an acrylic adhesive, a silicon adhesive, a urethane adhesive, a polyamide adhesive, a vinyl acetate adhesive, an ester adhesive, a styrene adhesive, a cyanoacrylate adhesive, a PVA adhesive, a PP adhesive, a PC adhesive, a PET adhesive, a PMMA adhesive, a PES adhesive, a PEN adhesive, a cellulose adhesive, a silane coupling adhesive, and an epoxy adhesive.

3. The laminate according to claim 1 or 2,

the surface roughness of the bonding portion of the lamination surface is smaller than the surface roughness of the chamfered portion.

4. A method for producing a laminate produced by bonding a plurality of members including at least glass with an adhesive,

The method for manufacturing a laminate is characterized by comprising:

Chamfering an end of the laminated surface of the glass to form a chamfered portion;

Applying the adhesive to a bonding portion of a lamination surface of at least one of the plurality of members; and

and adhering the plurality of members to the chamfered portion with the adhesive.

Technical Field

The present invention relates to a laminate in which a plurality of members including glass are bonded together with an adhesive, and a method for manufacturing the same.

Background

Patent documents 1 and 2 disclose a laminate in which members including glass are bonded to each other with an adhesive. Patent document 1 proposes a glass laminate used for displays and the like. The plurality of glass films with reflective films are integrated with an adhesive interposed therebetween to form a glass laminate. In patent document 1, prevention of air bubbles in the adhesive layer and reduction of the thickness difference of the adhesive layer are achieved by studying the adhesion method of the adhesive. Patent document 2 proposes a glass laminate excellent in infrared absorption function, which is realized by using a near infrared absorbing glass in the glass laminate or by providing an infrared absorbing function to an adhesive.

Patent document 1: japanese laid-open patent publication No. 2015-187065

Patent document 2: japanese patent laid-open publication No. 2017-14042

However, when a member including glass is bonded with an adhesive, the adhesive may overflow from an end portion of the member at the time of bonding (see fig. 15). When the adhesive overflows, the properties and physical properties of the glass may be changed by the overflowing adhesive during use, and the use may be affected. Although a step of removing the overflowing adhesive may be provided, there is a concern that the influence on the subsequent step, the manufacturing cost, and the like may occur. In addition, in order to prevent the overflow, there is also a method of reducing the amount of the adhesive and applying the adhesive at a position away from the end portion, but in this case, the adhesive may not sufficiently reach the end portion, and the adhesive force may be easily reduced such as peeling from the end portion. In view of improving the adhesive strength and preventing peeling, the adhesive is preferably spread over the end portions.

Disclosure of Invention

The purpose of the present invention is to provide a laminate which prevents overflow of an adhesive such as adhesion to a side surface of glass and which does not affect the use thereof, and a method for producing the same.

The present inventors have conducted extensive studies and as a result, have found that, in a laminate in which at least one of members to be laminated is glass, the above-mentioned problems can be solved if at least the lamination surface of the glass is a laminate having a chamfered portion at an end portion.

The laminate of the present invention is a laminate in which a plurality of members including at least glass are bonded with an adhesive, and is characterized in that a chamfered portion is provided at an end of a lamination surface of the bonded glass, and the adhesive is adhered to the chamfered portion.

The laminate of the present invention is characterized in that the adhesive is at least one selected from the group consisting of a UV curable resin, an acrylic adhesive, a silicone adhesive, a urethane adhesive, a polyamide adhesive, a vinyl acetate adhesive, an ester adhesive, a styrene adhesive, a cyanoacrylate adhesive, a PVA adhesive, a PP adhesive, a PC adhesive, a PET adhesive, a PMMA adhesive, a PES adhesive, a PEN adhesive, a cellulose adhesive, a silane coupling adhesive, and an epoxy adhesive.

the laminate of the present invention is characterized in that the surface roughness of the bonding portion of the laminate surface is smaller than the surface roughness of the chamfered portion.

The method for producing a laminate according to the present invention is a method for producing a laminate in which a plurality of members including at least glass are bonded together with an adhesive, the method comprising: chamfering an end of the laminated surface of the glass to form a chamfered portion; applying the adhesive to the adhesive portion of the laminated surface of at least one of the plurality of members; and adhering the plurality of members to the chamfered portion with the adhesive.

ADVANTAGEOUS EFFECTS OF INVENTION

according to the present invention, a laminate can be obtained that does not cause an adhesive to overflow to the side surfaces of glass and members and that does not affect the characteristics and use of each member.

Drawings

Fig. 1 shows an example of a side view of a laminate according to embodiment 1 of the present invention.

Fig. 2 shows an example of a side view of embodiment 2 of the laminate of the present invention.

Fig. 3 shows an example of a side view of embodiment 3 of the laminate of the present invention.

Fig. 4 shows an example of a side view of embodiment 4 of the laminate of the present invention.

fig. 5 shows an example of a side view of embodiment 5 of the laminate of the present invention.

fig. 6 shows an example of a side view of embodiment 6 of the laminate of the present invention.

Fig. 7 shows an example of a side view of embodiment 7 of the laminate of the present invention.

Fig. 8 shows an example of a side view of embodiment 8 of the laminate of the present invention.

Fig. 9 shows an example of a side view of embodiment 9 of the laminate of the present invention.

Fig. 10 shows an example of a side view of embodiment 10 of the laminate of the present invention.

Fig. 11 shows an example of a lamination surface of the laminate of the present invention.

Fig. 12 shows an example of a lamination surface of the laminate of the present invention.

Fig. 13 shows an example of a lamination surface of the laminate of the present invention.

Fig. 14 shows an example of a lamination surface of the laminate of the present invention.

Fig. 15 shows an example of a side view of a conventional laminate.

Detailed Description

The laminate of the present invention is produced by laminating a plurality of members including glass as an essential member by bonding them with an adhesive, and has a chamfered portion at least at an end of a laminated surface of the glass.

In the drawing, the hatched portion represents an adhesive, the dotted portion represents a chamfered portion, and the dotted portion represents the outermost end of the laminated surface. In the present specification, the laminated surface refers to a surface where glass and a member are bonded. The term "adhesive overflow" refers to a case where the adhesive adheres to the outside (the outside of the dotted line portion, the side wall surface of the member and the glass) from the outermost end of the lamination surface.

The laminate of the present invention is composed of two or more members, at least one of which is glass. The glass composition is not particularly limited, and borosilicate glass, aluminosilicate glass, alkali-free glass, fluorophosphate glass, phosphate glass, quartz glass, and the like can be used. The thickness, size, and shape of the glass are not particularly limited. As the glass, glass with a functional film (for example, an antireflection film, a reflection film, an infrared ray cut/transmission film, an ultraviolet ray cut/transmission film, an antifouling/dustproof film, or the like), glass colored from the outer surface, glass subjected to microfabrication, or the like, which is appropriately processed according to the application, may be used. When a plurality of glass sheets are used, they may be all the same glass or different glass sheets.

As the members constituting the laminate of the present invention, resins, metals, ceramics, sapphire, films, fiber materials, crystals, and the like can be used in addition to glass. The applications of the member are used as optical devices, prisms, biological membranes, culture substrates, heat insulators, electric circuits, and the like.

The laminate of the present invention is bonded with glass and other members (may be glass) by an adhesive. The adhesive is not particularly limited as long as it can closely adhere glass and a member without peeling, and one or two or more kinds selected from UV curable resin, acrylic adhesive, silicone adhesive, urethane adhesive, polyamide adhesive, vinyl acetate adhesive, ester adhesive, styrene adhesive, cyanoacrylate adhesive, PVA adhesive, PP adhesive, PC adhesive, PET adhesive, PMMA adhesive, PES adhesive, PEN adhesive, cellulose adhesive, silane coupling adhesive, epoxy adhesive, and the like can be suitably used.

The state of the adhesive can be appropriately selected from liquid, gel, solid, tape, sheet, and the like, but liquid or gel is preferable in order to improve the adhesion between the members.

In the members constituting the laminate of the present invention, at least the laminate surface of the glass includes a chamfered end portion (hereinafter referred to as a chamfered portion) and a portion with an adhesive (hereinafter referred to as an adhesive portion). By having the chamfered portion, the adhesive adheres to the chamfered portion when the adhesive is used for bonding, and when the adhesive spreads, the adhesive can be prevented from overflowing to the outside of the end portion of the member. The position having the chamfered portion may be the entire periphery of the end portion of the laminated surface or a part thereof, but preferably, the end portion outside the position to which the adhesive is applied is the chamfered portion.

The shape of the chamfered portion is not particularly limited, and can be appropriately selected from an R chamfer, a C chamfer, an inclined surface, and the like. In the selection, the shape of the chamfered portion is appropriately selected so as not to affect the use. In addition, the range of the chamfer (hereinafter referred to as a chamfer region) can be appropriately adjusted in both the planar direction and the thickness direction according to the use application, the type of the adhesive, and the like. When the viscosity of the adhesive is low (easy to flow), or when it is necessary to coat a large amount of the adhesive, the chamfer length in the planar direction and the thickness direction is increased. This can increase the volume of the chamfered region, and therefore, even if the adhesive spreads more, the overflow of the adhesive can be easily suppressed. The chamfer length in the thickness direction may be the same length as the thickness. In the case where the chamfer length in the thickness direction and the thickness length are the same, there is a possibility that the chamfer length and the chamfer angle are appropriately adjusted, because the adhesive easily flows down due to a decrease in the adhesive portion, a steep angle, or the like depending on the inclination angle and the chamfer forming position.

For example, in the case where other members are stacked on the top and bottom of the glass, that is, the structure has three or more layers, the top and bottom surfaces of the glass are stacked, and therefore, chamfered portions are formed at both end portions. The shape and the position of the chamfered portion may be the same or different from each other in the upper and lower surfaces. The number of layers to be stacked and the combination of the components are preferably adjusted as appropriate.

Parts other than glass may also have chamfered portions. The chamfer shape and the like can be appropriately selected from the R chamfer, the C chamfer, the inclined surface and the like as in the case of the above glass, and the volume, the inclination angle and the like of the chamfer region can be appropriately adjusted depending on the use application, the type of the adhesive and the like.

In the laminate of the present invention, preferably, the surface roughness of the bonding portion of the laminated surface of the glass is smaller than the surface roughness of the chamfered portion, that is, the bonding portion is in a state where the surface is smoother than the chamfered portion (the chamfered portion is in a state where the surface is rougher than the bonding portion). The adhesive portion has a smooth surface, so that the adhesion between the members is improved, and the peeling is further prevented. In addition, the chamfered portion can suppress the flow of the adhesive in the outermost direction of the end portion by roughening the surface thereof. The surface roughness is not limited, but for example, the surface roughness (Ra) of the chamfered portion is preferably 0.15 to 0.5 μm, and the surface roughness (Ra) of the adhesive portion is preferably less than 0.15. mu.m. The surface roughness (Ra) is an arithmetic average roughness Ra described in JISB0601 (corrected in 2013) of japanese industrial standards.

Next, a method for producing the laminate of the present invention will be described. The laminate of the present invention is produced by bonding two or more members with an adhesive as described above.

The end of the surface to be the laminated surface is chamfered to form a chamfered portion. The method of forming the chamfered portion can be appropriately selected from polishing, etching, laser processing, grinding, cutting, pressing, and the like. It is preferable to select the inclination angle in consideration of the physical properties of the member, the thickness, the desired inclination angle, and the width of the work.

An adhesive is used in the bonding of the parts. The kind of the binder can be appropriately selected from the above-mentioned kinds. In addition, the coating method may be selected as appropriate depending on the state of the adhesive and the range of the adhesive to be coated. For example, printing is performed on a paste or a melt of an adhesive, the adhesive is applied using an applicator or a device, and the adhesive is applied in the form of a tape or a sheet. In the present specification, a method of printing a paste-like or frit-like adhesive, a method of attaching a seal tape-like or sheet-like adhesive, and the like are also included in the method of applying an adhesive. In addition, in order to improve adhesiveness, treatment such as application of force (for example, placing a heavy object, clamping with an instrument, or the like), heating, or the like may be performed.

In the range of application of the adhesive, it is preferable to apply the adhesive portion other than the position where the chamfered portion is formed in the laminated surface. An example of the coating method is shown in fig. 11 to 14. The adhesive may be applied only to the inside of the portion where the chamfered portion is formed, may be applied only to a part of the inside of the portion where the chamfered portion is formed, or may be applied to the entire lamination surface.

Embodiments 1 to 10 of the present invention are described below. The chamfer shape, angle, and width of the following embodiments are changed or a combination of a plurality of embodiments is used, and can be appropriately adjusted within the range described in the present specification.

As shown in fig. 1 and 2, in embodiments 1 and 2, a chamfered portion 22 is provided at an end portion of a laminated surface 21 of the glass 2. The chamfered portion 21 is C-chamfered in shape.

As shown in fig. 3, in embodiment 3, chamfered portions 22 and 32 are provided at both the end of the lamination surface 21 of the glass 2 and the end of the lamination surface 31 of the member 3. Both chamfered portions 22, 32 are C-chamfered in shape.

As shown in fig. 4 and 5, in embodiments 4 and 5, a chamfered portion 22 is provided at an end portion of the laminated surface 21 of the glass 2. The shape of the chamfered portion 21 is an inclined shape toward the entire thickness direction.

As shown in fig. 6, in embodiment 6, chamfered portions 22 and 32 are provided at both the end of the lamination surface 21 of the glass 2 and the end of the lamination surface 31 of the member 3. The chamfered portions 22 and 32 are each formed in an inclined shape extending in the entire thickness direction.

As shown in fig. 7, in embodiment 7, the shape of the chamfered portion 22 at the end of the laminated surface 21 of the glass 2 is different from the shape of the chamfered portion 32 at the end of the laminated surface 31 of the member 3. In embodiment 7, the chamfered portion 22 is formed in a C-chamfer shape, and the chamfered portion 32 is formed in an inclined shape extending in the entire thickness direction.

as shown in fig. 8, in embodiment 8, the size of the lamination surface 21 of the glass 2 is smaller than the size of the lamination surface 31 of the member 3. In embodiment 8, the chamfered portion is formed only on the glass 2, and the chamfered portion 22 is a C-chamfer.

As shown in fig. 9, in embodiment 9, the thickness of the glass 2 and the thickness of the member 3 are different. The same as embodiment 1 except for the difference in thickness.

As shown in fig. 10, embodiment 10 is an example in which members 3 and 3' are bonded to the upper and lower sides of a glass 2. Both the laminated surfaces 21 and 21 'of the glass 2 have chamfered portions 22, and the chamfered portions 22 and 22' are C-chamfered.

It is apparent to those skilled in the art that, although the present invention has been described in detail with reference to the specific embodiments, various changes and modifications can be made without departing from the spirit and scope of the invention.

The present application is based on japanese patent application published on 21/4/2017 (japanese patent application 2017-084724), the content of which is incorporated by reference.

Industrial applicability of the invention

The laminate of the present invention is extremely useful for applications such as solid-state imaging devices, optical devices, holder glasses, display-related parts, housings of electronic devices, solar cells, and composite glasses for windows.

description of reference numerals:

1 … laminate; 2 … glass; 21 … lamination surface of glass; 22 … chamfered portions of glass; 23 … bonding portions of glass; 3 … parts (containing glass); the lamination surface of the 31 … part; a chamfered portion of 32 … part; 33 … bonding portions of the members; 4 … adhesive.