US 12,673,442 B2 · Method and installation for producing a film or sheet from a slabstock foam, and method and system for retrofitting an installation for film or sheet production

Abstract

The invention relates to a method for producing a film (2) or sheet from a block material, in particular from a slabstock foam (3), in which at least the following regions are provided, as seen in a production direction (P) of the film (2) or sheet: a cutting region (I) for cutting the film (2) or sheet, wherein the film (2) or sheet is cut out, in a slitting-open manner, by means of a cutting unit (10) from the block material, which is continuously fed to the cutting region (I); also a passing-on region (II), adjoining the cutting region (I) and having a driven passing-on roller (20) for conveying the film (2) or sheet out of the cutting region (I); and also a secondary region (III′), adjoining the passing-on region (II) and intended for further processing the film (2) or sheet, in particular a winding region (III) for winding the film (2) or sheet into a coil (4). In this case, there is a cutting-region stress in the film (2) or sheet in the cutting region (I) upstream of the passing-on roller (20), and there is a secondary stress in the film (2) or sheet in the passing-on region (II) upstream of the secondary region (III′), in particular winding region (III). The invention also relates to an installation (1) for film or sheet production, and to a method for retrofitting an installation (1) for film or sheet production, and to a system for retrofitting an installation for film or sheet production.

Claims15

Dependent claims

A method for producing a film or sheet from a block material, in particular from a slabstock foam, in which at least the following regions are provided, as seen in a production direction of the film or sheet:

a cutting region for cutting the film or sheet, wherein the film or sheet is cut out, in a splitting-open manner, by means of a cutting unit from the block material, which is continuously fed to the cutting region,
a passing-on region adjoining the cutting region and having a driven passing-on roller for conveying the film or sheet out of the cutting region, and
a secondary region adjoining the passing-on region and intended for further processing the film or sheet, in particular winding region for winding the film or sheet into a coil,
wherein there is a cutting-region stress in the film or sheet in the cutting region upstream of the passing-on roller and there is a secondary stress in the film or sheet in the passing-on region upstream of the secondary region, in particular winding region,
characterized in that the method is at least partially controlled in such a manner that:
a) at least one parameter representing the cutting-region stress is automatically detected in the cutting region, and/or
b) at least one parameter representing the secondary stress is automatically detected in the passing-on region,
and in that at least one of the following process parameters is regulated on the basis of at least one of the parameters detected in step a) or b):
a drive parameter (a1) of the block material,
a drive parameter (a2) of the driven passing-on roller, and/or
a drive parameter (a3) in the secondary region for moving the film or sheet for further processing of the film or sheet.

8 more elements

An installation for producing a film or sheet from a block material, in particular from a slabstock foam, wherein the installation has at least the following regions as seen in a production direction of the film or sheet:

a cutting region for cutting the film or sheet, wherein a cutting unit is provided in the cutting region for cutting out, in splitting-open manner, the film or sheet from the block material which is continuously fed to the cutting region during production,
a passing-on region adjoining the cutting region and having a driven passing-on roller for conveying the film or sheet out of the cutting region, and
a secondary region adjoining the passing-on region and intended for further processing the film or sheet, in particular winding region for winding the film or sheet into a coil,
wherein there is a cutting-region stress in the film or sheet in the cutting region upstream of the passing-on roller and there is a secondary stress in the film or sheet in the passing-on region upstream of the secondary region, in particular winding region,
characterized in that at least one of the following detection units is provided:
a) a cutting region detection unit in the cutting region for automatically detecting a parameter representing the cutting-region stress, and/or
b) a passing-on region detection unit in the passing-on region for automatically detecting a parameter representing the secondary stress,
and in that a control unit is provided for regulating at least one of the following process parameters on the basis of at least one of the parameters detected according to a) or b):
a drive parameter (a1) of the block material,
a drive parameter (a2) of the driven passing-on roller, and/or
a drive parameter (a3) in the secondary region for moving the film or sheet for further processing of the film or sheet.

8 more elements

A method for retrofitting an installation for producing a film or sheet from a block material, in particular from a slabstock foam, wherein the installation has at least the following regions as seen in a production direction of the film or sheet:

a cutting region for cutting the film or sheet, wherein a cutting unit is provided in the cutting region for cutting out, in a splitting-open manner, the film or sheet from the block material which is continuously fed to the cutting region during production,
a passing-on region adjoining the cutting region and having a driven passing-on roller for conveying the film or sheet out of the cutting region,
and
a secondary region adjoining the passing-on region and intended for further processing the film or sheet, in particular winding region for winding the film or sheet into a coil,
wherein there is a cutting-region stress in the film or sheet in the cutting region upstream of the passing-on roller and there is a secondary stress in the film or sheet in the passing-on region upstream of the secondary region, in particular winding region,
characterized in that the installation is equipped with at least one of the following detection units:
a) with a cutting-region detection unit in the cutting region for automatically detecting a parameter representing the cutting-region stress,
and/or
b) with a passing-on region detection unit in the passing-on region for automatically detecting a parameter representing the secondary stress,
and in that:
the installation is equipped with a control unit in such a manner,
or
an existing control unit is retrofitted in such a manner
that at least one of the following process parameters in the installation can be regulated on the basis of at least one of the parameters detected according to a) or b):
a drive parameter (a1) of the block material,
a drive parameter (a2) of the driven passing-on roller,
and/or
a drive parameter (a3) in the secondary region for moving the film or sheet for further processing of the film or sheet.

15 more elements

Dependencies are inferred from the claim text.

Method and installation for producing a film or sheet from a slabstock foam, and method and system for retrofitting an installation for film or sheet production

Life of this patent

Method and installation for producing a film or sheet from a slabstock foam, and method and system for retrofitting an installation for film or sheet production

Life of this patent

Abstract

Claims15