Elastic composite fabrics and process for making same

• US 2,536,163 A
• Filed: 10/15/1947
• Issued: 01/02/1951
• Est. Priority Date: 10/15/1947
• Status: Expired due to Term

• Current Assignee: Benjamin Michalko, Theophilus A. Feild Jr
• Original Assignee: Benjamin Michalko, Theophilus A. Feild Jr
• Inventors: Feild, Theophilus A. Jr., BENJAMIN MICHALKO
• Application Number:
  US02/779,960
• Time in Patent Office: 1,175 Days
• US Class Current: 442/182
• CPC Class Codes: D04B 1/00 Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
• CPC Class Codes: D06M 13/2243 Mono-, di-, or triglycerides
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 442/3008 Woven fabric has an elastic quality
• CPC Class Codes: Y10T 442/413 Including an elastic strand

Claims

1. PROCESS FOR PRODUCING AN ELASTIC COMPOSITE FABRIC WHICH IS STRONG, RESILIENT AND DIMENSIONALLY STABLE IN THE UNTENSIONED STATE IN BOILING WATER, WHICH COMPRISES GRADUALLY HEATING TO A TEMPERATURE AROUND 100* C. A COMPOSITE OPEN FABRIC COMPRISING ORIENTED VINYL RESIN MULTI-FILAMENT YARNS, HAVING A SHRINKAGE IN BOILING WATER OF AT LEAST 50% ASSOCIATED WITH STRONG STRETCH-LIMITING YARNS, AT LEAST SAID VINYL RESIN YARNS BEING COATED WITH A PLASTICIZER FOR SUCH RESIN WHICH IS A NONSOLVENT FOR THE RESIN AT TEMPERATURES AROUND 25* C., AND WHICH DOES NOT SUBSTANTIALLY PLASTICIZE THE STRETCH-LIMITING YARNS AT TEMPERATURES AS HIGH AS 100* C., THE TOTAL TIME OF HEATING SUCH FABRIC AT TEMPERATURES UP TO 70* C. BEING SUFFICIENT TO FIX THE PLASTICIZER WITHIN THE ORIENTED VINYL RESIN YARNS OF THE FABRIC, THEREBY FIXING THE PLASTICIZER IN SAID VINYL RESIN YARNS AND REDUCING THE AREA OF THE FABRIC AT LEAST 50%, AND REMOVING ANY UNFIXED PLASTICIZER FROM THE FARBIC, THEREBY PRODUCTING A RUN-RESISTANT COMPOSITE ELASTIC FABRIC HAVING AN EXTENSIBILITY UNDER TENSION OF AT LEAST 100% IN AT LEAST ONE DIRECTION AND A RECOVERY OF AT LEAST 85% OF THE ORIGINAL LENGTH RAPIDLY UPON RELEASE OF SUCH TENSION AND A SLOW RECOVERY OF THE BALANCE THEREOF.