Mucell Extrusion, LLC

Trexel, Inc.

Samuel Edward Dix

Jere R Anderson

Mark E Lindenfelzer

Levi A Kishbaugh

Theodore A Burnham

Simon Dominey

Samantha Whitney

Methods and systems that include introducing blowing agent into a hopper of a polymeric foam processing system.

Blowing agents in polymer foam processing systems

Polymeric foam processing systems and methods.

Polymeric foam processing systems and methods

Thermoformed polymeric foam articles and methods of forming the same are described. In some embodiments, thermoformed articles are produced from multi-layer foamed sheet where the formed article has a density equal to or less than the precursor multi-layer sheet. One of the layers of the thermoformed article may be a polymer foam layer having a density reduction between 5% and 50% as compared to the solid polymer. Such polymer foam layers can be referred to as 'medium density' or “high density” foams. Advantageously, the methods described herein are practical for commercial use and, for example, can be used to produce a variety of thermoformed articles suitable for use in many different applications.

Multi-layer thermoformed polymeric foam articles and methods

Thermoformed polymeric foam articles are described herein In some embodiments, the articles are made by a manufacturing method (e.g., a continuous process) which involves the extrusion and subsequent thermoforming of a blowing agent containing thermoplastic sheet. The thermoformed polymeric foam articles may have a lower density than the precursor sheet from which they are formed. In some but not all embodiments, the precursor sheet is a multi-layer sheet which includes at least one foam layer. In such embodiments, the thermoformed articles also include multiple layers and at least one foam layer.

Thermoformed polymeric foam articles and methods

Methods and systems that include introducing blowing agent into a hopper of a polymeric foam system.

Blowing agent introduction into hopper of polymer foam processing

Methods of forming polymeric foams are provided. The methods may involve co-extruding a foam layer along with one or more skin layers. In some embodiments, the skin layer(s) may be removed (e.g., in a peeling operation); while, in other embodiments, the skin layer(s) may form part of the final article. The methods are particularly well suited for producing polymeric foams from polymeric materials that are considered to be difficult to foam by those of skill in the art.

Method of forming polymeric foam and related foam articles

A method of forming a blown polymeric foam film is described herein. As described further below, equipment design (e.g., die design) and processing conditions may be controlled to form blown films having desired characteristics.

Method of forming blown polymeric foam film

Compression molded polymeric foam articles and methods are described herein. Equipment design and processing techniques may be controlled to form compression molded articles having desired characteristics.

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Newton, NH, United States of America

Samuel Edward Dix