Treofan Germany Gmbh & Co. Kg

Hoechst Trespaphan Gmbh

Trespaphan Gmbh

Albrecht Freynhofer

Detlef Busch

Wolfgang Rasp

Dieter Mathieu

Gerhard Koch

Helmut Kremp

Michael Thull

The invention relates to a device for drawing a film web, made from a thermoplastic plastic, comprising at least one driven roller (), driven at a speed Vand at least one second driven roller (), driven at a speed Vwhere V&#x3c;V. The rollers () are serially arranged such that a drawing gap () is embodied between the two rollers (). A width-maintaining device is arranged in the drawing gap (), which mechanically grips both edges of the film web such that the width of the film web is essentially maintained during the longitudinal drawing in the drawing gap (). The invention further relates to a method for the longitudinal drawing of films which are drawn by means of said device.

Method and device for longitudinal drawing of a film web

The application relates to a device for adjusting the gap of a die arrangement using a thermopin, which is connected to the die lip ( ) without any play by means of a clamp-type socket ( ), where the clamp-type socket ( ) engages on the one had in a lip nose ( ) and on the other hand in a groove ( ) of the thermopin ( ), where the lip nose ( ) is an integral part of the die lip ( ) and the clamp-type socket ( ) has a bore ( ), and the thermopin ( ) has a bore ( ) and a fixing means is passed through the bores ( ) and ( ).

Device for adjusting a gap

A compensator 11 comprises a housing 14 and a sliding ram 13, which is displaceable along a sliding seat 17. The sliding ram 13 includes a flow channel portion 21, which transitions into an elbow bend 30, which, in the operating state, i.e., when hot polymer melt flows through the compensator, is congruent with a further flow channel portion 20. The two flow channel portions 20, 21 have flanges 28 and 29 at their end faces for the installation of the compensator 11 at a bend in a melt line through which a polymer felt flows, to compensate for linear expansions of the melt line due to the increased temperature.

Compensator for temperature-caused length changes

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Schiffweiler, Germany

Albrecht Freynhofer