ES400424A3 - Procedure for the manufacture of transverse stretch cylinders for laminar materials. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the manufacture of transverse stretch cylinders for laminar materials. (Machine-translation by Google Translate, not legally binding)
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BONET BARGUNO
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BONET BARGUNO
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Priority to ES400424ApriorityCriticalpatent/ES400424A3/en
Publication of ES400424A3publicationCriticalpatent/ES400424A3/en
Shaping Of Tube Ends By Bending Or Straightening
(AREA)
Shaping By String And By Release Of Stress In Plastics And The Like
(AREA)
Abstract
Process for the manufacture of transverse stretching cylinders for sheet materials, essentially characterized by the turning of a bore cylinder with a diameter slightly lower than the diameter provided for the finished drawing cylinder; forming a band of thermoplastic material of thickness corresponding to the difference of radius between the extruder cylinder and the cylindrical cylinder mentioned, and with a corresponding width to cover the length thereof in several helical turns, one of the faces of this band being provided with at least one protruding longitudinal rib, this thermoplastic band being adapted with application of heat and tension on the bore cylinder, in a first helical winding operation with edges together and a determined helix pitch, over a part of the length of said cylinder, and then in a second helical winding operation with opposite passage to the previous one and over the rest of the length of said cylinder. (Machine-translation by Google Translate, not legally binding)
ES400424A1972-02-161972-02-16Procedure for the manufacture of transverse stretch cylinders for laminar materials. (Machine-translation by Google Translate, not legally binding)
ExpiredES400424A3
(en)
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