Film-stretching system
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United States of America Patent
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Issued Date -
Dec 12, 2002
app pub date -
Jun 5, 2002
filing date -
Jun 6, 2001
priority date (Note) -
Abandoned
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Abstract
Apparatus (1) for monoaxial stretching of a synthetic film (2) under tension using a roller arrangement in which there are at least two stretching rollers (3) defining a stretching gap (4), where, in order to produce a breathable synthetic film (2) by means of tensile strain, the stretching rollers (3) for the cold-stretching of the synthetic film (2) have surfaces which increase the coefficient of friction.
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