THERMOPLASTIC CELLULAR MATERIAL FROCESSES AND PRODUCTS

• US 3,586,645 A
• Filed: 08/20/1964
• Issued: 06/22/1971
• Est. Priority Date: 08/20/1964
• Status: Expired due to Term

• Current Assignee: Claude R. Nichols Jr, Theodore A. Granger
• Original Assignee: Claude R. Nichols Jr, Theodore A. Granger
• Inventors: Granger, Theodore A., Nichols, Claude R. Jr.
• Application Number:
  US04/390,856
• Time in Patent Office: 2,497 Days
• US Class Current: 521/78
• CPC Class Codes: C08J 9/04 using blowing gases generated by a previously added blowing agent
• CPC Class Codes: D04H 13/00 Other non-woven fabrics
• CPC Class Codes: Y10S 52/10 Polyhedron
• CPC Class Codes: Y10S 521/905 Hydrophilic or hydrophobic cellular product
• CPC Class Codes: Y10S 521/908 Nucleating agent for cellular product
• CPC Class Codes: Y10S 521/91 Plural blowing agents for producing nonpolyurethane cellular products
• CPC Class Codes: Y10S 521/911 Surfactant for other than polyurethane cellular product
• CPC Class Codes: Y10S 521/917 Specialized mixing apparatus utilized in cell forming process

Abstract

CELLULAR THERMOPLASTIC MATERIALS ARE PREPARED BY HEATING THE MATERIAL TO PLASTICITY, APPLYING A PRESSURE THERETO, EJECTING THE MATERIAL UNDER PRESSURE THROUGH AN ORIFICE TO FORM A MULTIPLICITY OF DISCREET PARTICLES AND COALESCING THE PARTICLES WHILE IN THE INITIAL EXPANDING STATE. THE PRODUCT IS USEFUL FOR A VARIETY OF MATERIALS SUCH AS DISPOSABLE DIAPERS.

Claims