ES218224A1 - A procedure and apparatus for stretching lengthly an orientable film of thermoplastic material (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure and apparatus for stretching lengthly an orientable film of thermoplastic material (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Publication of ES218224A1publicationCriticalpatent/ES218224A1/en
Shaping By String And By Release Of Stress In Plastics And The Like
(AREA)
Abstract
Method and apparatus for longitudinally stretching an orientable film of thermoplastic material, characterized in that the method comprises continuously holding the opposite edges of a continuous advance film, by first fastening means advancing longitudinally with the film, at a uniform speed; continuously releasing the film of the first securing means, and stretching it longitudinally then continuously holding its edges by a second means separated from the first and advancing longitudinally with the film at a uniform speed higher than that of these; the initial application width of the second fastening means is not greater than the end of the first, and the central part of the width of the film remains unsupported, while it is subjected to the drawing tension. (Machine-translation by Google Translate, not legally binding)
ES0218224A1953-11-111954-11-04A procedure and apparatus for stretching lengthly an orientable film of thermoplastic material (Machine-translation by Google Translate, not legally binding)
ExpiredES218224A1
(en)
A procedure and apparatus for stretching lengthly an orientable film of thermoplastic material (Machine-translation by Google Translate, not legally binding)
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