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Device for producing foil rolls

A technology of film rolls and equipment, applied in thin material handling, strip winding, transportation and packaging, etc., can solve problems such as increasing production costs and having to be removed from the machine by hand

Inactive Publication Date: 2005-04-27
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The production of coreless film rolls using the equipment known from WO 99 / 06312 has the disadvantage that the pre-stretched film must come to a standstill before the winding mandrel and the winding to the winding mandrel The film sheets on the shaft must be removed from the machine by hand
Especially for pre-stretched film rolls, the manual operations required for this purpose increase production costs

Method used

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  • Device for producing foil rolls
  • Device for producing foil rolls
  • Device for producing foil rolls

Examples

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Embodiment Construction

[0024] According to the basic structure shown in FIG. 1 , the apparatus according to the invention for producing film rolls comprises a roll holder 10 . The roll holder 10 carries a film roll 12 having a generally non-stretched film. The film web 14 is unrolled from the film roll 12 and guided on deflection wheels 16 , 18 . Typically, these devices comprise a plurality of wheels 16, 18 connected in part to drive means, wherein the rate of rotation of each wheel 16, 18 can be varied. The film sheet 14 can thus be stretched. In particular, one or more of the wheels 16 , 18 may be embossed for facilitating stretching of the film roll 14 .

[0025] The film web 14 is wound onto a winding mandrel 20 after passing deflection rollers 16 , 18 . After a film web 14 of predetermined length has been wound onto a winding mandrel 20, the film web 14 is severed with the aid of a cutting device 22 comprising, for example, a knife.

[0026] In the illustrated embodiment, the winding mandr...

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Abstract

A device for producing film rolls, which is in particular suitable for producing coreless film rolls, comprises a roll holder for receiving a film roll comprising a film sheet to be wound off. The film sheet is wound up to a winding mandrel for producing the preferably coreless film roll. For producing in particular a coreless film roll the winding mandrel comprises a plurality of radially displaceable holding segments extending in longitudinal direction of the winding mandrel. After transfer of the winding mandrel, together with the wound-up film roll, to a transport means, the winding mandrel is transported to a delivery station. The delivery station serving for automatically delivering the wound-up film roll from the winding mandrel comprises a displacement means with the aid of which the holding elements of the winding mandrel are displaced into a delivery position. In this delivery position the outer diameter of the winding mandrel is smaller such that the film roll is delivered from the winding mandrel and falls onto a transport belt.

Description

technical field [0001] The invention relates to an apparatus for producing rolls of film. The device can be used in particular for the production of coreless film rolls, ie film rolls which do not comprise any cardboard core or the like. This equipment is especially suitable for the production of pre-stretched or pre-expanded film sheets. Background technique [0002] An apparatus for producing coreless film rolls is known from WO 99 / 06312. The apparatus described here includes a roll holder that receives a roll of film comprising film sheets to be wound. The film sheet is an unstretched film sheet. The film sheet is unwound from the film roll, stretched with the aid of wheels and wound onto a winding mandrel. At least one of the deflection wheels is embossed for the purpose of stretching the film. Also, the rate of rotation of the individual steering wheels can be varied to enable effective stretching. With the help of a control device, the film sheet is wound onto th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H18/04B65H19/22B65H19/30
CPCB65H2408/23157B65H2301/41818B65H19/2276B65H19/2207B65H2301/3251B65H19/22
Inventor 格尔德·海克奥斯
Owner ILLINOIS TOOL WORKS INC
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