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. 17, 2018
Filed:
Jun. 18, 2013
Illinois Tool Works Inc., Glenview, IL (US);
Elmar Fries, Roettingen, DE;
ILLINOIS TOOL WORKS INC., Glenview, IL (US);
Abstract
The invention relates to a method for producing a plastic part, especially a plastic part for an automobile, by an injection molding method comprising the steps: Using an injection molding device, plastic in a flowable state is injected into the mold cavity of an injection mold, gas under pressure is injected through a gas inlet opening in the injection mold into the mold cavity of the injection mold by means of a gas injection device so that a gas bubble forms within the still flowable plastic, the plastic is heated and kept flowable, at least in a region neighboring the gas inlet opening while the plastic is hardening in the mold cavity, wherein pressure is exerted on the plastic being kept flowable so that an opening in the plastic in the region of the gas inlet opening is sealed, and the plastic part is removed from the injection mold after reaching a sufficient dimensional stability. In addition, the invention relates to a corresponding device.