International Paper Company

Bruce J Thoman

Richard A Tedford

Wei Li

Jozef Milewski

Mark D Peterson

Thomas Robert Christie

Karl K Chiang

Kenneth H Shaner

Craig R Puls

David A Fergus

The present invention relates to articles made of a thermoformable resin comprising a biodegradable polymer having polybutylene succinate (PBS) via extrusion using an extruder which comprise: a biodegradable polymer having: (a) a Tvalue of up to about 160&#xb0; C. (e.g., in the range of from about 50&#xb0; to about 150&#xb0; C.); (b) a heat distortion index of up to about 150&#xb0; C. (for example, up to about 120&#xb0; C.); and (c) optionally, a Tin the range of from about 70&#xb0; to about 160&#xb0; C. (e.g., in the range of from about 80&#xb0; to about 150&#xb0; C.). Thermoformed article such as a food or beverage cup, lid, cutlery item, foodservice item, molded tray, food storage container, etc provide the ability to resist deformation during higher temperature conditions that may occur during storage and distribution.

Thermoformed article made from polybutylene succinate (PBS) and modified polybutylene succinate (MPBS)

The present invention is directed to a method of producing a thermoformable composite by crosslinking PHA and PLA together in the presence of an additive to produce PHA and PLA blend and resins having: (a) a Tvalue of up to about 180&#xb0; C.; and (b) a heat distortion index of up to about 160&#xb0; C. The thermoformable composite is used to make a food or beverage cup, lid, cutlery item, foodservice item, molded tray, or food storage container. The thermoformable composite comprises from about 5% to about 95% by weight of polylactic acid (PLA), from about 5% to about 95% by weight polyhydroxyalkanoate (PHA) polymer, and from about 0.01% to about 60% additives wherein the PLA and PHAs being crosslink together by intermolecular means to enhance performance and processability.

Thermoformed articles made from reactive extrusion products of biobased materials

A container according to a preferred embodiment of the present invention provides an inner wall and an outer wall wrapped therearound so as to define a double-wall container construction. A plurality of spacer elements are interposed between the inner and the outer walls so as to maintain a minimum thickness of an air space defined therebetween. In normal use conditions, the spacer elements do not contact the inner wall; however, the spacer elements prevent the outer wall from contacting the inner wall during non-standard use conditions.

Double wall container with internal spacer

A lamina for a medium density structural board made from dimensioned wood flakes cut from a mixture of hardwood species and having a high retained internal bond strength is disclosed. The wood flakes are blended with a phenol formaldehyde resin having a major quantity of a low molecular weight fraction and a wax and then formed into a hot pressed product. The lamina may be used alone or as the core of a structural board having veneer, hardboard or plywood face panels. Three or more lamina may be formed into a structural board or used as the core of a board having veneer, hardboard or plywood face panels.

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Lebanon, OH, United States of America

Bruce J Thoman