Claims
- 1. Method for producing and vulcanizing an inflatable hollow body from a double cloth having upper and lower cloth plies of given area with edges and pile yarns spacing the plies apart, which comprises producing the inflatable hollow body by placing the double cloth onto a first smooth unvulcanized rubber layer having an area greater than the given area of the cloth plies defining a first peripheral region of the first rubber layer protruding freely beyond the double cloth all around, placing folded angle braces of unvulcanized rubber on the first peripheral region along the edges of the plies of the double cloth, subsequently placing a second smooth unvulcanized rubber layer of the same size as the first rubber layer on the double cloth and the angle braces defining a second peripheral region of the second rubber layer protruding freely beyond the double cloth all around and a hollow space remaining between the rubber layers, pressing the protruding peripheral regions of the first and second rubber layers, subsequently evacuating the hollow space remaining between the first and second rubber layers with a valve inserted in the second rubber layer, and maintaining the vacuum until the material of the rubber layers partially enters into the plies of the double cloth; and subsequently vulcanizing the hollow body while maintaining the vacuum for air-tightly laminating the double cloth with the first and second rubber layers.
Priority Claims (2)
Number |
Date |
Country |
Kind |
3433113 |
Sep 1984 |
DEX |
|
3435157 |
Sep 1984 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATIONS:
This application is a continuation-in-part of Ser. No. 774,080, filed Sept. 9, 1985 now abandoned.
US Referenced Citations (5)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
774080 |
Sep 1985 |
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