Glass-resin laminate and method for producing same
A glass/resin laminate (A) including glass plates laminated on both sides of a polycarbonate layer through bonding layers made of a thermoplastic resin, each of the glass plates having a thickness of from 0.3 to 1 mm and having compressive stresses of at least 3 MPa on an entire surface thereof is provided. The glass/resin laminate (A) is obtainable by a process including a step ( 1 ) for disposing a bonding layer on one side of a polycarbonate film having a certain thickness, the bonding layer being made of a thermoplastic resin; a step ( 2 ) for stacking a glass plate on the bonding layer to prepare a laminate (B) with the polycarbonate film and the glass plate being laminated through the bonding layer; and a step ( 3 ) for preparing another similar laminate (B), placing both laminates (B) in a mold such that both polycarbonate films are confronted each other, and forming a polycarbonate layer between the confronted polycarbonate films.
1. A glass/resin laminate, comprising:
glass plates laminated on both sides of a polycarbonate layer through bonding layers made of a thermoplastic resin;
wherein:
each of the glass plates has a thickness of from 0.3 to 1 mm;
each of the glass plates has compressive stresses of at least 3 MPa on an entire surface thereof; and
the thermoplastic resin has a glass transition temperature of from 160 to 250° C.
2. A process for producing a glass/resin laminate (A) according claim 1 comprising:
disposing a bonding layer on one side of a polycarbonate film having a thickness of from 0.05 to 0.2 mm, the bonding layer being made of a thermoplastic resin, and stacking a glass plate on the bonding layer to prepare a laminate (B) with the polycarbonate film and the glass plate being laminated through the bonding layer; or disposing a bonding layer on one side of a glass plate, the bonding layer being made of a thermoplastic resin, and stacking a polycarbonate film having a thickness of from 0.05 to 0.2 mm on the bonding layer to prepare a laminate (B) with the glass plate and the polycarbonate film being laminated through the bonding layer; and
preparing another similar laminate (B), placing both laminates (B) in a mold such that both polycarbonate films are confronted each other, and forming a polycarbonate layer between the confronted polycarbonate films.
3. The process for producing a glass/resin laminate (A) according to claim 2 , wherein the thermoplastic resin is at least one kind selected from the group consisting of a thermoplastic polyurethane elastomer, an ethylene-vinyl acetate copolymer resin and polyvinyl butyral.
4. The glass/resin laminate according to claim 1 , wherein the polycarbonate layer comprises polycarbonate films provided on both sides of an injection-molded polycarbonate layer.
5. The glass/resin laminate according to claim 1 , wherein the polycarbonate layer has a thickness of from 2 to 6 mm.
6. The glass/resin laminate according to claim 1 , wherein the thermoplastic resin is at least one kind selected from the group consisting of a thermoplastic polyurethane elastomer, an ethylene-vinyl acetate copolymer resin, and polyvinyl butyral.
7. The glass/resin laminate according to claim 1 , wherein each glass plate has a thickness of from 0.4 to 0.7 mm.
8. The glass/resin laminate according to claim 1 , wherein the thermoplastic resin has a glass transition temperature of from 180 to 200° C.
9. The glass/resin laminate according to claim 1 , wherein the thermoplastic resin is a thermoplastic polyurethane elastomer.
10. The glass/resin laminate according to claim 1 , wherein the bonding layer has a thickness of from 0.01 to 0.1 mm.
11. The glass/resin laminate according to claim 1 , wherein the polycarbonate layer has a thickness of from 3 to 5 mm.
12. A laminate, comprising:
a polycarbonate film laminated on one side of a glass plate through a bonding layer;
wherein:
the polycarbonate film has a thickness of from 0.05 to 0.2 mm;
the glass plate has a thickness of from 0.3 to 1 mm;
the bonding layer is made of a thermoplastic resin; and
the thermoplastic resin has a glass transition temperature of from 160 to 250° C.
13. The laminate according to claim 12 , wherein the thermoplastic resin is at least one kind selected from the group consisting of a thermoplastic polyurethane elastomer, an ethylene-vinyl acetate copolymer resin and polyvinyl butyral.