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:
Mar. 18, 2003
Filed:
May. 08, 2002
Stephen C. Jens, Winchester, MA (US);
Andrew C. Harvey, Waltham, MA (US);
Richard M. Formato, Grafton, MA (US);
Samuel W. Pollard, Durham, NH (US);
James Stumpf, Goffstown, NH (US);
George A. Provost, Litchfield, NH (US);
Velcro Industries B. V., Curacao, AN;
Abstract
Molding apparatus and method for molding of features integral with a base, such as in the production of fastener elements for hook-and-loop type touch fasteners, e.g. by the Fischer process, employs a mold roll ( ) formed of rings ( ) that have coolant passages ( ) formed within the ring components ( ) themselves for substantially direct contact with cooling liquid. Axial tie rods ( ) compress the mold rings ( ) together, contributing to the sealing of the coolant passages and the stiffness of the mold roll. Mold cavities ( ), including cavities ( ) used for injection molding, and cooling passages ( ) formed in either mold rings ( ) or injection mold plates by photo-chemical etching, laser machining and other techniques are disclosed. Various machines and methods taking unique advantage of these features are disclosed, including ring alignment methods for improved base thickness control and for forming products with very thin bases.