Method of preparing shirred heatsealed elastic vinyl products

• US 2,905,581 A
• Filed: 02/20/1956
• Issued: 09/22/1959
• Est. Priority Date: 02/20/1956
• Status: Expired due to Term

• Current Assignee: Edwin M. Maxey
• Original Assignee: Edwin M. Maxey
• Inventors: Maxey, Edwin M.
• Application Number:
  US03/566,493
• Time in Patent Office: 1,310 Days
• US Class Current: 156/163
• CPC Class Codes: A41D 27/245 made by welding or gluing joining of plastics by welding or gluing B29C65/00; sewing machines for concurrently making thread and welded seams D05B17/00; thermal or chemical fixing of seams and hems D06M
• CPC Class Codes: B29C 65/02 by heating, with or without pressure
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/4722 Fixing strips to surfaces other than edge faces fixing strips to edge faces B29C63/0026
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/712 the composition of one of the parts to be joined being different from the composition of the other part
• CPC Class Codes: B29C 66/729 Textile or other fibrous material made from plastics
• CPC Class Codes: B29K 2019/00 Use of rubber not provided for in a single one of main groups B29K2007/00 - B29K2011/00, as moulding material
• CPC Class Codes: B29K 2027/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: Y10T 29/49874 Prestressing rod, filament or strand
• CPC Class Codes: Y10T 428/24826 Spot bonds connect components

Claims

1. THE METHOD WHICH COMPRISES PLACING A THIN LAYER OF FLEXIBLE PLASTICIZED VINYL CHLORIDE POLYMER MATERIAL IN DIRECT FACE TO FACE CONTACT WITH A THIN LAYER OF ELASTIC VULCANIZED NITRILE RUBBER MATERIAL AND HEAT-SEALING THE TWO LAYERS BY APPLICATION OF HEAT AND PRESSURE OVER A PORTION ONLY OF THE CONTACTING FACES.

3. THE METHOD OF PREPARING A SHIRRED ELASTIC FLEXIBLE ARTICLE WHICH COMPRISES PLACING A THIN LAYER OF FLEXIBLE PLASTICIZED VINYL CHLORIDE POLYMER MATERIAL IN DIRECT FACE TO FACE CONTACT WITH A THIN LAYER OF FLEXIBLE CANIZED NITRILE RUBBER MATERIAL, HEAT-SEALING THE TWO LAYERS BY APPLICATION OF HEAT AND PRESSUREOVER A PORTION ONLY OF THE CONTACTING FACES, AND RELAXING THE STRETCHED LAYER TO CAUSE THE OTHER LAYER TO BE GATHERED IN THE DIRECTION OF ELASTICITY.