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:
Dec. 21, 1993
Filed:
Dec. 10, 1992
Itaru Shirahata, Oobu, JP;
Toshio Hirose, Oobu, JP;
Tokai Kogyo Kabushiki Kaisha, Oobu, JP;
Abstract
A process for making a blow molded product which includes the steps of positioning a sheet having a surface pattern which is incompatible with a parison in a mold for blow molding; extruding a softened parison of a synthetic resin from a die head; holding the parison in the mold and blowing gas into the parison to be expanded to form a blow molded product with a surface feature of the sheet reproduced on the blow molded product; and separating the sheet and the blow molded product from each other. An apparatus used for the process is provided with a mold defining a cavity for blow molding, a die head for extruding a parison of a synthetic resin into said mold, a sheet positioned between the mold and the parison which is formed an effective surface thereon and incompatible with the material of the parison, a gas blowing device for blowing gas into the parison to form a blow molded product, a sheet supply device for supplying a sheet in the cavity of the mold, and a sheet takeup device for taking up the sheet from the mold after blow molding.