ES229062A3 - Procedure of continuous manufacture of padded sheets of thermoplastic materials (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure of continuous manufacture of padded sheets of thermoplastic materials (Machine-translation by Google Translate, not legally binding)
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Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Abstract
Continuous manufacturing process of quilted sheets of thermoplastic materials, characterized in that by extrusion producing a tube of thermoplastic material that swells at the outlet of the corresponding nozzle by injection into its interior of compressed air to give rise to a uniform expansion of its wall with the consequent thinning of the same, collapses the swollen tube in a still hot state between a rotating cylinder with a smooth surface and another provided on its surface with cavities uniformly distributed and limited by ribs crossed between them, so that the two superimposed portions of the the wall of the flattened tube are joined to each other by cross-seals produced by said ribs and which determine in the crushed tube alveolus hermetically closed with air inside. (Machine-translation by Google Translate, not legally binding)
ES0229062A1956-05-301956-05-30Procedure of continuous manufacture of padded sheets of thermoplastic materials (Machine-translation by Google Translate, not legally binding)
ExpiredES229062A3
(en)
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