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. 13, 1994
Filed:
Jul. 06, 1993
John L Hanley, Westland, MI (US);
Roman C Boos, Zurich, CH;
Sika Corporation, Lyndhurst, NJ (US);
E. I. Du Pont de Nemours, Wilmington, DE (US);
Abstract
A dry, initially non-tacky, expansible, shaped and formed sealant and baffle component is provided for sealing and providing an acoustic baffle for cavities in the hollow structural components of a vehicle body or the like, which during the manufacturing operation is conveyed through a bake oven at an elevated temperature. The component is made up of a metal ion neutralized ethylene-.alpha., .beta. ethylenically unsaturated carboxylic acid copolymer (ionomer), a blowing agent, and a tackifier, and optionally with an additive polymer and a cross-linking agent. The blowing agent is selected to be activated at the temperature of the bake oven so that the shaped and formed component expands in the body cavity to seal the cavity and prevent ingress of moisture, dust and other contaminating materials and particles, as well as to form a sound barrier therein.