Apparatus and Process For the Formation of a Film Fibre
AssigneeDsm IP Assets B.V.
InventorsJohannes I. Tiesnitsch, Matheus P. Quaedflieg, Leonardus W.G. Rijks, Laurentius J.H. Nijsten
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Abstract
The invention deals with an apparatus for the preparation of a film or fibre out of a reduced amount of material, in particular of polymeric material. This is achieved with small-sized equipment wherein each stretch roll has a diameter of between 35 and 100 mm. The invention also relates to a process for preparing a representative film from or fibre with a reduced amount of material, by using the specific equipment.
Claims15
Apparatus for the formation of a film or polymeric fibre, comprising the following elements:
- a. means for melting and/or for shaping a composition into a form suitable for the formation of a film or fibre,
- b. means for cooling the melted and shaped material,
- c. means for stretching the film or fibre, comprising a first and a second stretch roll characterized in that the apparatus comprises means to control the torque during the stretching down to 1.5*103 Nm, and wherein the rotational velocity of each stretch roll, having a diameter of between 35 and 100 mm, can be set between 0.25 and 35 RPM.
Apparatus for forming a film or a fibre from a melted and shaped material, said apparatus comprising at least two stretch rolls, characterized in that the rotational velocity of each stretch roll, having a diameter of between 35 and 100 mm, can independently be set between 0.25 and 35 RPM.
Dependencies are inferred from the claim text.