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. 02, 2002
Filed:
Jul. 06, 1995
Garry J. Edgington, White Bear Lake, MN (US);
Christopher M. Ryan, Chisago City, MN (US);
H. B. Fuller Licensing & Financing Inc., St. Paul, MN (US);
Abstract
A hot melt adhesive composition can be made using a polyester derived from 2-hydroxy-propanoic acid (lactic acid). A biodegradable/compostable thermoplastic resin can be formulated into a hot melt adhesive using a lower molecular weight material as a tackifying resin. The adhesive material can be made pressure sensitive and can be made entirely biodegradable by combining the polyester polymer with other biodegradable/compostable ingredients. The biodegradable/compostable adhesive material can be used as a substitute for non-biodegradable materials made from commercial polymers that resist attack by bacteria, fungi and other microbial populations. The resulting adhesive composition can be used in a variety of applications such as packaging and for the manufacture of disposable articles which are made from degradable materials. The entire disposable article can be made from adhesives and structural materials that are fully biodegradable/compostable.