Stock material or miscellaneous articles – Layer or component removable to expose adhesive
Patent
1996-06-21
1998-12-08
Ahmad, Nasser
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
2503161, 428 402, 428 415, 428 417, 428 418, 428 421, 428157, 4283171, 4283179, 4283184, 428913, B32B 702, B41J 2475
Patent
active
058466223
ABSTRACT:
A heat-expandable solid image forming sheet includes a base sheet, a heat-expandable layer formed of a material containing foaming particles on the base sheet and capable of expanding when heated, and a protective layer formed by a coating process on the heat-expandable layer. The base sheet has a strength higher than that of the protective layer in order to suppress the rise of a solid pattern toward the base sheet. The base sheet may be a PET film having a tensile strength of 0.5 kg/cm.sup.2 or above expressed by stress induced therein at 1% elongation at 100.degree. C. An image is formed using a light-absorptive material on the protective layer that absorbs light energy and converts the absorbed light energy into heat. When the heat-expandable solid pattern forming sheet carrying the image is irradiated with light, portions of the heat-expandable layer corresponding to the image are heated by the heat generated from the light-absorptive material. These heated portions expand and rise toward the protective layer to form a solid pattern corresponding to the image.
REFERENCES:
patent: 5441810 (1995-08-01), Aizawa
Ahmad Nasser
Brother Kogyo Kabushiki Kaisha
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