US 2006/0141227 A1 · Synthetic resin card and method of producing the same

Abstract

A synthetic resin card in which card warpage can be reduced and a method for producing the same are provided. By setting the difference δ in the angle of orientation between outer layers symmetrically laminated on a card core section, it is possible to reduce imbalance of stress resulting from the difference in the shrinkage factor between the outer layers, and card warpage can be suppressed. Furthermore, by setting the thickness of the outer layers at 25 μm to 125 μm, rising of the surface of the synthetic resin card can be reduced. By reducing the card warpage and the rising of the surface of the synthetic resin card, it is possible to improve moving characteristics when the synthetic resin card is allowed to move in a device.

Claims12

Dependent claims

A synthetic resin card comprising:

a substantially planar core layer;
and
a first outer layer and a second outer layer laminated on front and back surfaces of the core layer, respectively,
wherein the difference δ in the angle of orientation between the first and second outer layers is 20° or less;
and
at least one of the first and second outer layers is provided with a recording layer.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/560,445Filed 23 Jun 2004

Priority

JP 2003-17977424 Jun 2003

Published

29 Jun 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification26 codes

B32B 27/36
Layered products comprising a layer of synthetic resin: comprising polyesters
B32B 27/08
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of synthetic resin
B32B 27/365
Comprising polyesters: comprising polycarbonates
B42D 25/00
Information-bearing cards or sheet-like structures characterised by identification or security features

Synthetic resin card and method of producing the same

Life of this patent

Synthetic resin card and method of producing the same

Life of this patent

Abstract

Claims12