JP2001097746A - Glass lamination bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass lamination bag producible at a low cost without using expensive hermetic fastener. SOLUTION: The objective glass lamination bag for the production of laminated glass is provided with an upper cloth 3, a lower cloth 4 and a sealing member 7 to openably seal the circumference of the cloths. The sealing member is openably sealed by the use of a female material F made of an elastomer and having a groove and a male material M made of an elastomer and having a ridge engaging with the groove. The glass lamination bag can be sealed without using a hermetic fastener by engaging the groove and ridge of the female material and male material made of an elastomer for the sealing of the upper cloth and the lower cloth. The heat-resistance and the durability of the bag are improved by manufacturing the sealing member with a heat- resistant rubber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonded glass bag, and more particularly to a laminated glass bonded bag which is less expensive than the conventional one.

[0002]

2. Description of the Related Art A laminated glass has a structure in which an intermediate film 2 of an adhesive synthetic resin is sandwiched between two transparent plates 1 such as a plastic plate such as polycarbonate or acrylic resin or inorganic glass. When manufacturing such a laminated glass, for example, Japanese Patent Publication No. 63-1
As described in No. 2786, a laminate in which an intermediate film 2 is sandwiched between two transparent plates 1 is loaded into a glass-bonded bag B (see FIG. 8), and the inside of the glass-bonded bag B is depressurized. At the same time, the glass bonded bag B is manufactured by heating with hot air.

[0003] The glass bonded bag B used in the method for manufacturing a laminated glass has a structure in which the peripheral edges of the upper cloth 3 and the lower cloth 4 can be opened and closed by an airtight fastener 5.
However, although the airtight fastener 5 has good airtightness, it has a disadvantage that it has a complicated structure and is expensive. In addition, the airtight fastener 5 is made of chloroprene rubber (excluding the engagement portion), has poor heat resistance, and has a problem in durability due to the hot air heating as described above.

The present invention has been made in view of the above problems, and has as its object to provide a glass bonded bag which can be manufactured at low cost without using an expensive hermetic fastener.

[0005]

In order to solve the above-mentioned problems, a glass bonding bag according to the present invention is provided with a glass bonding device having an upper cloth, a lower cloth, and a sealing member for opening and closing the periphery thereof. In the bag, the sealing member is
It is characterized by comprising a female member made of an elastic body and having a concave portion and a male member made of an elastic body having a convex portion engaged with the concave portion.

According to the present invention, the upper cloth and the lower cloth are sealed by engaging the unevenness of the female member and the male member having the unevenness made of the elastic body, so that the glass can be used without using an airtight fastener. There is an advantage that a joined bag can be provided. Further, by manufacturing the seal member with a heat-resistant rubber, there is an advantage that heat resistance is improved and durability is improved.

[0007]

FIG. 1 is a plan view of a glass-bonded bag B according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA of FIG. 1. As is clear from these figures, the glass-bonded bag B has an upper cloth. 3
And a lower cloth 4, and a peripheral edge 6 of the upper cloth 3 and the lower cloth 4.
Has a structure in which a seal member 7 is provided over the entire circumference. And one side 61 of the upper cloth 3 and the lower cloth 4
Has a structure in which the sealing member 7 is bonded and fixed so as not to be opened. A reinforcing member 8 is provided at an end of one side 61 to which the adhesive is fixed, so that a force in an opening direction does not act on the adhesive fixing part when the sealing member 7 on the other side is opened. I have. An air suction port (not shown) for evacuating the inside of the glass-bonded bag is provided on one of the sides 61.

The seal member 7 has a male member M and a female member F, as is apparent from FIG. The male member M
Is upper cloth 3 or lower cloth 4 (hereinafter, upper cloth 3 or lower cloth 4).
The male member main body 71 is fixed to any one of the male member main bodies 71 and a convex portion 72 protrudingly formed from the male member main body 71. The convex portion 72 has a teardrop shape, that is, a convex portion main body 721 having a substantially circular or elliptical cross-section, and a shape having a convex narrow portion 722 connected to the main body 721. Convex curved portions 723 are formed on both outer sides of the constricted portion 722.

On the side of the male member main body 71 where the convex portion 72 is not formed, a male member flat portion 711 formed flat for attaching the cloth is formed, and the male member flat portion 711 is formed. Thus, the tongue piece 73 extends obliquely in the direction of the inside of the glass-bonded bag B and in the direction of the convex portion 72. The tongue piece 73 has a structure in which the thickness gradually decreases in the tip direction. The tongue piece 73 does not necessarily have to be inclined, and may extend horizontally.

FIG. 4 shows another embodiment of the shape of the projection 72. According to this embodiment, a projection 724 having a triangular cross section is formed on the periphery of the projection main body 721. I have. The protrusion 724 has a triangular cross section as shown in FIG. 4 and has a structure in which the shortest side protrudes on the periphery. Therefore, when the protrusion 72 and the recess 75 are engaged with each other, The tip of the protrusion 724 is a glass bonded bag B
(See FIG. 5). For this reason, when the pressure of the glass-bonded bag B described later is reduced, the convex body 7
When a force in the circumferential direction is applied to 21 and the state in which the close contact between the convex main body 721 and the concave main body 751 is released, the shortest side rises and acts to secure the airtightness ( (See FIG. 5).

On the other hand, the female member F is a female member main body 74 having a mountain-shaped cross section.
And a concave portion 75 formed at the top of the female member body 74.
The concave portion 75 has the same structure as that of the convex portion 72 and is formed in a teardrop shape in cross section so that the convex portion 72 meshes with the concave portion 75. That is, a concave main body 751 having a substantially circular or elliptical cross section, and a concave concave portion 7 having a reduced width.
52, and the constricted portion 752 has a concave curved portion 75
3 is provided. Further, the female member main body 74 of the female member main body 74 where the concave portion 75 is not formed is provided with a female member flat portion 741 for sticking to a cloth.

FIG. 6 is a sectional view showing another example of the seal member of the present invention. As is clear from this figure, the base portions 712, 742 extending in parallel to the cloth of the male member M and the female member F.
Are formed. The base portions 712 and 742 are extended in the horizontal direction with respect to the cloth so as to protrude in both side directions, and a reinforcing cloth 76 is similarly buried horizontally in the base portions 712 and 742. The reinforcing cloth 76 may be provided close to the surface of the male member flat portion 711 or the female member flat portion 741, or may be provided between the base portions 712 and 742. The reinforcing cloth 76 is not fundamentally limited in the present invention, and may be a reinforcing cloth such as Kevlar, nylon, or cotton. The thickness is preferably about 0.2 to 0.4 mm.

When such base portions 712 and 742 are provided, the male member flat portion 711 or the female member flat portion 741 is provided.
When the adhesive is used alone, the adhesive strength is improved, and the sealing member 7 and the upper cloth 4 due to the thermal deterioration of the adhesive at a high temperature in the case of producing a composite glass. This has the advantage of improving the peel strength with the lower cloth 5.

In this embodiment, in order to prevent the peeling due to the thermal deterioration of the adhesive as described above, it is possible to further effectively prevent the peeling.
By sewing the base portions 712 and 742 and the upper cloth 3 and the lower cloth 4, the male member M or the female member F can be attached to the upper cloth 3 or the lower cloth 4. That is, after bonding the male member flat portion 711 or the female member flat portion 741 to the upper cloth 4 or the lower cloth 5 with an adhesive, the base portion 712,
742 and the upper cloth 3 and the lower cloth 4 are sewn to form the male member M.
Alternatively, the female member F is firmly fixed to the upper cloth 3 or the lower cloth 4. In this case, the place to be sewn is not basically limited in the present invention. For example, as shown in FIG. 6, both the peripheral edge 6 and the inside may be sewn.
As shown in (a) and (b), the base portions 712 and 742 projecting inward may be sewn. Further, only the side of the peripheral edge 6 may be sewn.

The reinforcing cloth 76 reinforces the sealing member 7. When the reinforcing cloth 76 is joined to the cloth by sewing as described above, the reinforcing cloth 76 functions to enable joining by sewing.

When the sewing is performed in this manner, the sewing portion 77
It is preferable to cover the sewn portion 77 with an airtight tape 78 from the outside (see FIGS. 6 and 7) or the inside of the cloth. The airtight tape 78 can secure airtightness by covering the sewing portion 77 over the entire surface as shown in FIGS.

As the seal member 7 as described above, ethylene-propylene rubber (EP rubber, EPT rubber), water-added butadiene-acrylonitrile copolymer (water-added N
BR), butyl rubber (IIR), fluorine rubber and the like can be used. In the examples, among the ethylene-propylene rubbers, ethylene-propylene-terpolymer (EPT rubber; Esplen 505A: trademark * manufactured by Sumitomo Chemical Co., Ltd.) is usually sulfur-vulcanized and manufactured with a hardness of about 50. Have been. Such rubber has good heat resistance, improves the durability of the sealing member 7, and as a result, improves the durability of the glass-bonded bag B. Similarly, in order to improve the durability of the glass-bonded bag B, it is particularly preferable to use the base cloth formed with a normal sulfur-vulcanized EPT rubber layer on the base cloth 3 and the lower cloth 4.

As the adhesive for bonding the sealing member 7 and the cloth, chloroprene rubber-based adhesive, butyl rubber-based adhesive,
Nitrile rubber adhesives and silicone rubber adhesives can be used.

Because of the above-mentioned structure, the sealing member 7 of the glass-bonded bag B is released and the glass-bonded bag B is opened. At this time, since the side 61 is fixed so as not to open, the other three sides are opened, and the laminate in which the intermediate film 2 is sandwiched between the two transparent plates 1 can be installed in the glass bonding bag B. become. Next, the sealing member 7 formed on the periphery of the upper cloth 3 and the lower cloth 4 is engaged with each other to seal the inside of the glass-bonded bag B.

The seal member 7 has the male member M and the female member F as described above. The male member M has the convex portion 72 and the female member F has the concave portion 75. The protrusion 72
The sealing member 7 is closed by engaging the concave portion 75 with the sealing member 7. The convex portion 72 has a tear-drop-shaped convex main body 721, and the convex main body 721 is engaged with the concave main body 751 to thereby form the convex constricted portion 72.
2 and the convex curved portion 723 of the concave constricted portion 752 and the concave curved portion 753 are brought into close contact with each other.

When the inside of the glass-bonded bag B is decompressed in such a state, the cloth is pressed inward by the external air pressure. At this time, a force is applied to the convex portion 72 in the circumferential direction of the convex portion main body 721 (for example, in the direction of the solid line arrow in FIG. 5).
Since the convex curved portion 723 of the concave constricted portion 752 and the concave curved portion 753 are in close contact with each other, the hermeticity is not impaired. Further, as shown in FIG. 3, when the tongue piece 73 is provided,
As the cloth is pressed inward, the cloth is bent downward as shown in FIG.
Since the female member F comes into contact with the slope of the female member body 74, the hermeticity of the glass bonded bag B is further improved. Since the tongue piece 73 is inclined and elongated and the thickness is gradually reduced in the tip direction, the tongue piece 73 is easily brought into contact with the slope of the female member body 74 as described above. At this time, when the protrusion 724 is provided on the protrusion main body 721, the force in the circumferential direction is large, and when the close contact between the protrusion main body 721 and the recess body 751 is released, the protrusion 724 rises, and the sealing performance is improved. The function of securing is performed (see FIG. 5).

[0022]

As described above, according to the present invention,
Since the upper cloth and the lower cloth are sealed by engaging the unevenness of the female member and the male member having the unevenness made of the elastic body, the glass bonded bag can be provided at low cost without using an airtight fastener. There is. Further, by manufacturing the seal member with a heat-resistant rubber, there is an advantage that heat resistance is improved and durability is improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a glass bonded bag according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of a seal member used in the embodiment.

FIG. 4 is a sectional view of a male member according to another embodiment.

FIG. 5 is a cross-sectional view showing an engaged state between a male member and a female member.

FIG. 6 is a sectional view showing another example of the seal member.

FIG. 7 is a cross-sectional view illustrating an example of an attached state of the seal member of FIG. 6;

FIG. 8 is a schematic view of a glass bonded bag.

[Explanation of symbols]

 3 Upper cloth 4 Lower cloth 5 Airtight fastener 6 Peripheral edge 61 Side 7 Seal member 71 Male member main body 712 Base part 72 Convex part 721 Convex part main body 722 Convex constriction 723 Convex curve 724 Projection 73 Tongue piece 74 Female member main body 742 Base 75 Depression 751 Depression main body 752 Depression constriction 753 Recessed curved part 76 Reinforcement cloth 77 Sewing part 78 Airtight tape B Glass bonding bag M Male member F Female member

Claims (10)

[Claims] 1. A laminated glass bonding bag comprising an upper cloth, a lower cloth, and a seal member for sealing a peripheral edge of the upper cloth and the lower cloth, wherein the seal member is made of an elastic body and has a concave portion, and the female member has a concave portion. A glass bonded bag, which is openably and closably sealed by a male member made of an elastic body having a convex portion meshing with the glass member. 2. The glass bonded bag according to claim 1, wherein a part of the sealing member is not opened. 3. The glass bonded bag according to claim 2, wherein reinforcing members are provided at both ends of the portion that is not opened. 4. The convex portion has a convex main body having a substantially circular or elliptical cross section and a convex constricted portion having a reduced width, and convex convex portions are formed on both outer sides of the convex constricted portion. Yes,
The glass bonded bag according to any one of claims 1 to 3, wherein the concave portion has a shape similar to the shape of the convex portion, and the two are brought into close contact by meshing with each other. 5. A projection provided on the periphery of the projection main body, the projection being bent in an inner direction of the glass bonding bag when the projection and the recess are engaged with each other. Glass bonded bag. 6. The glass-joined bag according to claim 4, wherein the male member has a tongue protruding inwardly of the joined bag and having a bendable portion. 7. The elastic body is ethylene-propylene rubber, water-added butadiene-acrylonitrile copolymer,
The glass bonded bag according to any one of claims 1 to 6, wherein the glass bonded bag is one of butyl rubber and fluorine rubber. 8. The method according to claim 1, wherein the male member and the female member have a base portion extending horizontally on both sides, and a reinforcing cloth is embedded in the base portion. Any of the glass bonded bags. 9. The glass-joined bag according to claim 8, wherein said base portion and said upper cloth and / or lower cloth are joined by sewing. 10. The glass-joined bag according to claim 9, wherein the sewn portion joined by the sewing is covered with an airtight tape.