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:
Jul. 26, 1983
Filed:
Apr. 12, 1982
Jeffrey Nelson, Milwaukee, WI (US);
Findley Adhesives Inc., Elm Grove, WI (US);
Abstract
A hot melt adhesive especially useful for producing PET bottle assemblies comprises a blend of: (1) a block copolymer selected from the class consisting of: (a) A-B-A block copolymer where A is a monovinyl aromatic hydrocarbon and B is either a conjugated diene or a rubbery mono-olefin and (b) a teleblock copolymer comprising molecules having at least three branches radially branching out from a central hub, each said branch having polystyrene terminal blocks and a butadiene segment in the center; (2) an ethylene/vinyl acetate copolymer; (3) a tackifying resin which serves to extend the adhesive properties of the system; (4) a stabilizer; and (5) a wax or oil diluent. PET bottle assemblies prepared using the above adhesive compositions are more resistant to separation than those prepared with prior art compositions not containing the ethylene/vinyl acetate copolymer.