JPH05318601A - Production of laminate - Google Patents

Abstract

PURPOSE:To laminate a resin having a wall thickness on a curved surface of a laminar body in a similarly curved state and to prevent an occurrence of a flaw or an adhesion of foreign particles by a method wherein a resin plate in a flat state is contact bonded under heat to the curved surface of the laminar body to be simultaneously shaped and bonded thereto. CONSTITUTION:A peripheral edge of a resin plate 1 is attached to a jig 2 at a position slightly outside a developed shape of a laminar body 3 serving as a bonding object of the resin plate 1. The resin plate 1 can be bonded to either a concave surface or a convex surface, but a convex surface is preferable. Next, this bonding and shaping device is heated, inclusive of its atmosphere. A heating temperature is not less than a glass transition temperature of the resin plate 1 and as high as an adhesive layer 5 can exhibit a sufficient adhesive power. When the resin plate 1 is sufficiently softened, the jig 2 is lowered to simultaneously bond and shape the resin plate by press molding or the like. After being cooled, the laminate is detached from the jig. The laminate is completed by cutting a part of the resin plate squeezed from the edge of the laminar body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a laminated body such as a safety glass in which a resin plate is bonded to one side of a plate glass having a curved surface.

[0002]

2. Description of the Related Art There is known a safety glass in which a resin layer is provided on one side of a plate glass to prevent scattering of fragments at the time of breakage and to absorb an impact by the resin layer. Specific examples include safety glass for automobile window glass and a protective panel for a cathode ray tube.

As a method for manufacturing such a laminated body, a film-like resin is laminated on one surface of a plate glass with an intermediate film interposed therebetween, and a buffer plate is covered on the film-like resin. After filling, the inside of the vacuum bag is deaerated and pressure-bonded, and then the buffer plate is removed (JP-A-60-193638, JP-A-62-162).
No. 297136), a method of adhering a transparent plate, which is shaped in advance to a curved surface to a cathode ray tube with a curved surface of a valve panel of a cathode ray tube (JP-A-2-46635), on one side of a plate-shaped body. When bonding the resin film, a method of pre-forming the film to a state close to the shape of the plate-like body to be bonded (JP-A-3-221451), when coating the concave surface of the lens with a resin protective sheet, Method of joining while pressing with an elastic jig such as rubber (Japanese Patent Publication No. 18545/1992)
No.) is known.

[0004]

Problems to be Solved by the Invention JP-A-60-1936
No. 38, JP-A-62-297136, the vacuum pressure bonding method is not suitable for adhering while deforming a thick resin such as a sheet or a plate, regardless of a thin film such as a film, and a film. The resin surface is pressed directly by the buffer plate, so the resin surface is easily scratched.

Further, JP-A-2-46635 and JP-A-3-4635.
In the method shown in No. 221451, a plate or film must be shaped in advance on a curved surface before bonding, and an extra step is required.

Further, in the method disclosed in Japanese Patent Publication No. 18545, since the film and the lens are directly pressed by the jig, the surface of the film and the lens are easily scratched.

It is an object of the present invention to solve the above-mentioned problems of the conventional method for producing a laminate and to provide a laminate with a thick resin by a simple and relatively labor-free technique.

[0008]

In order to solve the above problems, the present invention is to bond a resin plate, which is bonded to one surface side of a plate having a curved surface via an adhesive layer, while first heating it from a flat plate state. When pressure-bonding to the curved surface of the plate-shaped body, the shaping and bonding are performed simultaneously by pressing the peripheral edge of the resin plate outside the developed shape of the plate-shaped body.

[0009]

[Function] The first flat resin plate is heated to a temperature not lower than the glass transition point or the melting point, and is laminated on one surface side of a plate-like body having a curved surface with an adhesive layer, and press-molding or the like to form a shape. And joining at the same time.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 4 show the method of the present invention in the order of steps. FIG. 1 is a front view of a resin plate joining / shaping apparatus, FIG. 2 is a plan view of the apparatus, and FIG. FIG. 4 is a front view of the apparatus showing a state after shaping, and FIG. 4 is a cross-sectional view of a laminate obtained by the method of the present invention.

ABS is used as the resin plate used in the present invention.
Resin, AAS resin, ethylene-vinyl acetate copolymer, ethylene-vinyl chloride copolymer, MBS resin, polyethylene, polypropylene, polymethylmethacrylate, polycarbonate, polyamide, polystyrene, polysulfone, polyethersulfone, polyethylene terephthalate, polybutylene A resin plate made of a resin such as terephthalate, polycyclohexanedimethyl terephthalate, polyarylate, polyphenylene oxide, polyphenylene sulfide, polyvinyl chloride, liquid crystal polymer,
The size of these resin plates is not particularly limited and may be any size, but their thickness is generally 0.4 to 10 mm,
More preferably, it is 0.5 to 5 mm. Further, these resin plates may be translucent or opaque, but are preferably colorless transparent or colored transparent. Further, it may be one in which various printings and patterns are further provided in advance.

To join and shape the above resin plates, the periphery of the resin plate 1 is attached to the jig 2 as shown in FIGS. The sticking position is slightly outside the developed shape of the plate-like body 3 to which the resin plate 1 is joined. The jig 2 is provided so as to be movable up and down.

Below the resin plate 1 attached to the jig 2, a jig 4 to which a plate-like body 3 to be joined is fixed is installed. A plate glass, a metal plate, a wood plate, a ceramic plate, a resin plate, or the like is used as the plate-like body 3, and plate glass is preferable among them. The surface to which the resin plate 1 is joined is the concave surface side,
The convex side is possible, but the convex side is preferable.

At this time, the adhesive layer 5 is applied or adhered in advance. The surface on which the adhesive layer 5 is applied or adhered may be either the resin plate 1 or the plate-like body 3, but the surface of the resin plate is preferable from the viewpoint of workability. As the adhesive layer 5, ethylene-vinyl acetate copolymer, polyvinyl acetate, modified ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid ester copolymer, polystyrene-based resin, polyamide-based Hot melt adhesives such as resin, saturated polyester, thermoplastic polyurethane,
Epoxy, silicone, polyurethane, unsaturated polyester resin, acrylic resin and other thermosetting adhesives, polyester acrylate, polyether acrylate and other photocurable adhesives, polyisobutylene rubber, polyisobutyl rubber, styrene butadiene rubber, styrene butadiene styrene Rubber-based adhesives such as rubber, hydrogenated styrene-butadiene-styrene rubber, butadiene-acrylonitrile rubber, and silicone rubber are used, but hot-melt adhesives are preferred from the viewpoint of workability in bonding.

Next, heating is carried out for the entire atmosphere of the joining / shaping apparatus. The heating temperature is not lower than the glass transition temperature of the resin plate 1 and is a temperature at which the adhesive layer 5 can exert a sufficient adhesive force.

When the resin plate 1 is sufficiently softened, the jig 2 is lowered and press molding or the like is performed to simultaneously perform joining and shaping (FIG. 3).

After cooling, the laminated body is removed from the jig, and the portion of the resin plate that is protruding from the edge of the plate-shaped body is cut to complete the laminated body (FIG. 4).

The above is an example of the embodiment, and the present invention includes many modifications. For example, the atmosphere of the apparatus may be pressurized, depressurized, or vacuumed if necessary.

[0020]

As described above, according to the present invention, it is possible to stack a thick resin on a plate having a curved surface without previously processing the resin into a curved surface similar to that of the plate. Become. In addition, since a device such as a jig does not directly touch the portion where the resin plates are laminated at the time of joining and shaping, troubles such as scratches and adhesion of foreign matter are unlikely to occur.

[Brief description of drawings]

FIG. 1 is a front view of a resin plate joining / shaping device.

FIG. 2 is a plan view of a resin plate joining / shaping device.

FIG. 3 is a front view of the apparatus showing a state after joining and shaping.

FIG. 4 is a cross-sectional view of a laminated body obtained by the method of the present invention.

[Explanation of symbols]

 1: Resin plate 2: Jig 3: Plate-like body 4: Jig 5: Adhesive layer

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display area B29L 9:00 4F

Claims (2)

[Claims] 1. A method for manufacturing a laminate, in which a resin plate is bonded to one surface side of a plate-shaped body having a curved surface via an adhesive layer, the plate-shaped body being bonded while heating the resin plate initially in a flat plate state. A method for producing a laminated body, which comprises press-bonding to a curved surface of a body and simultaneously performing shaping and bonding. 2. The shaping and the joining are performed at the same time by pressing the resin plate to the curved surface of the plate-like body by pressing the peripheral edge of the resin plate outside the developed shape of the plate-like body. A method for manufacturing a laminate.