Patent ID: 8409392

Claim:
A method of manufacturing ultra-thin and elastic keypad comprising: I. steps for forming a plastic flake: a. cutting: a plastic film cut into a plastic flake by auto cutting machines; b. pre-shrinking: said cut plastic flake being pre-shrunk; c. slotting: a plurality of printing-fixing slots being slotted on said pre-shrunk plastic flake while placing within a punch; d. printing: an adhesive being sprayed after patterns or characters being printed on an obverse of said slotted plastic flake; e. silicone coating: said adhesive on said plastic flake being coated by silicone so as to form a silicone-coated surface, and the processing of said plastic flake being finished; II. steps for forming an elastic flake: a. cutting: an elastic film cut into an elastic flake by auto cutting machines; b. pre-shrinking: said cut elastic flake being pre-shrunk; c. printing: an adhesive being sprayed on a reverse of said pre-shrunk elastic flake to form an adhesive-printed surface; and III. steps for forming keypad: a. preparation: said finished plastic flake and elastic flake being prepared; b. jointing: said silicone-coated surface of said plastic flake being adhered to said adhesive-printed surface of said elastic flake; c. oil pressing: said jointed flakes being pressed by a preheated oil pressing equipment at a designate temperature; d. trimming: said pressed flakes being trimmed by a punch so as to form an integral keypad product.