TH122244B - Methods and machines for spiral cutting of tubular films - Google Patents

Abstract

A method of thread cutting on a tubular film of a thermoplastic material in which the film forms a flattened form released from a roll. Will be directed to spin around the core of the film by means of Rotate the unrolling device And as this rotating pipe travels forward over the round shaft, the pipe is cut into a non-tubular form by a knife, where its position is fixed relative to its surroundings, And the cut film is taken out of this round shaft. Characteristically Where the film is inflated as it moves forward towards the round shaft Or while this inflated film passes The beginning of the stream of the round shaft Or both Is supported by driving a supportive route which Aligned around the periphery of the tubular film, the movement of the support path is adjusted to fit. With the forward motion and rotation of the film together

Claims (1)

1. Method of thread cutting on thermoplastic tubular film. Where the film in a flat form which is released from the roll Will be directed to spin around the core of the film by means of Rotate the unrolling device This rotation is achieved a) by installing the roll in the unrolling platform, which causes the axis of the roll to rotate around the center of the roll. While this flattened film is released from the roll in the ejection zone extending parallel to the Film spindle b) or by keeping the roll axis fixed and loosening the film roll flat by means