Process and device for processing a film web

Abstract

An improved process for processing a film web (4) has the following steps: the film web (4) is cut in the longitudinal direction, forming a marginal strip (4a) and a remaining film web (4b) with a width reduced by the width of the marginal strip (4a); the marginal strip (4a) is transferred to a movable film-drafting device (10) on which is arranged a gripper; the remaining film web (4b) is separated entirely or partially by cutting and also possibly by tearing; the film-drafting device (10) is moved along one side of a roller arrangement (2), threading the film web (4) into the roller arrangement (2); the film-drafting device (2) is moved along one side of a winding device (3) comprising at least one winding roller (8) up to a release or end position (P); and the film-drafting device (10) is opened at the end position (P) to release the marginal strip (4a).

Description

technical field

[0001] The invention relates to a method and a device for processing a film web. Background technique

[0002] The invention starts here with a uniaxial or biaxial film stretching device, as is known from the prior art (for example from WO 96 / 29190).

[0003] After a uniaxial or biaxial stretch forming, it is known to guide the correspondingly produced film through the different processing and inspection stations of a roll arrangement (so-called discharge legs, pull rolls) and to wind it up on a winder . The film web is usually inserted manually by an operator via a so-called open insertion gap into the discharge column and winder in the film stretch forming plant. In this case, the film is followed by alternately surrounding rollers and parts of the machine frame must be engaged all around. Therefore, on the one hand, the insertion speed is limited to a limited extent by the physiological characteristics of the operator, and on the other hand, the costs f...

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