The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2001
Filed:
Feb. 05, 1998
Tung-Han Chuang, Taipei, TW;
Chin-Ming Chiang, Taipei, TW;
National Science Council, , TW;
Abstract
The present invention provides a novel process for making a radially arranged aluminum foil-filled plastic pellet for shielding against electromagnetic interference, comprising sandwiching a plastic matrix in between two layers of aluminum foil to form an aluminum/plastic/aluminum laminated sheet; slicing the laminated sheet into a plurality of aluminum/plastic/aluminum laminated strips; dividing the plurality of laminated strips into at least one group, each group containing 3 to 20 radially arranged strips; moisturizing and binding at least one group of laminated strips with a molten plastic matrix to form at least one radially arranged aluminum foil-filled plastic bar; and cutting at least one plastic bar into radially arranged aluminum foil-filled plastic pellets. By the present invention, the cost of making the conductive plastic pellets can be decreased, the amount of aluminum foil in the pellet can be greatly increased, and the breakage of the aluminum foil in the die can be prevented.