DISPOSABLE LAMINATE PRODUCT AND METHOD OF MAKING IT

• US 3,842,832 A
• Filed: 10/06/1972
• Issued: 10/22/1974
• Est. Priority Date: 10/06/1972
• Status: Expired due to Term

• Current Assignee: Harold A. Wideman, Ronald H. Wideman
• Original Assignee: Harold A. Wideman, Ronald H. Wideman
• Inventors: Wideman, Ronald H., Wideman, Harold A.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Yasko, J.
• Application Number:
  US05/295,471
• Time in Patent Office: 746 Days
• Field of Search: 128/169,156,155 161/129,128,148,73 156/229
• US Class Current: 602/75
• CPC Class Codes: A61F 13/15699 Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• CPC Class Codes: B32B 2327/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B32B 2375/00 Polyureas; Polyurethanes
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10T 428/24669 Aligned or parallel nonplanarities
• CPC Class Codes: Y10T 428/249985 Composition of adhesive or bonding component specified

Abstract

A disposable, stretchable laminate product having an inner core of foam material and a method of making the same. The laminate has an inner core of cellular plastic material having compressible foam cells and outer layers of nonwoven material. The outer layers of nonwoven material are wrinkled with laterally extending undulations and the inner core of foam fills these undulations. Because of this construction, the laminate is stretchable only in a longitudinal direction. The laminate is made by stretching a cellular foamed plastic material, thereby reducing its width, adhering the nonwoven material to opposite sides of the foam material while it is stretched, wetting the laminate to relax the nonwoven material thereby permitting the cellular plastic core to return longitudinally to its unstretched position and drying the laminate.

Claims

1. A DISPOSABLE ELONGATED LAMINATED STRETCH BANDAGE INCLUDING:

AN OUTER LAYER OF NONWOVEN MATERIAL ON OPPOSITE SIDES OF SAID BANDAGE, AND A LAYER OF LONGITUDINALLY STRETCHABLE FOAM MATERIAL LOCATED BETWEEN SAID OUTER LAYERS OF NONWOVEN MATERIAL, SAID LAYERS BEING ADHERED TOGETHER OVER THE ENTIRE EXTENT IN LATERALLY EXTENDING UNDULATIONS.

2. The bandage of claim 1 further characterized in that said nonwoven materials forming said outer layers are oriented to extend at right angles to the length of said undulations.

3. The bandage of claim 1 further characterized in that said layers are joined by adhesive.

4. The bandage of claim 3 further characterized in that said adhesive is polyvinyl chloride.

5. The bandage of claim 1 in which said outer layers of nonwoven material are rayon and said foam material is polyurethane.

6. A disposable, elongated laminated product including:

an outer layer of nonwoven material on each side of said product, a layer of foam material located between said outer layers, and adhesive fastening said layers together over the entire extent, said outer layers being laterally extending undulations with said foam material filling said undulations.

7. The disposable product of claim 6 further characterized in that said foam material is stretched longitudinally and compressed laterally and is held against lateral expansion by said outer layers of nonwoven material.

8. The disposable product of claim 6 further characterized in that said outer layers are formed to be stretched sufficiently to remove said undulations without over stretching said layer of foam.