Method for starting or terminating production of a film in a film manufacturing machine, film manufacturing machine and computer program product
AssigneeWindmoller & Holscher
InventorsKarsten Golubski, Tobias Kulgemeyer, Martin Backmann, Tim Kirchhoff, Jens Althermeler
Life of this patent
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Abstract
The invention describes a process for starting up a film production in a film manufacturing machine, in particular a blown film machine, by means of a control device, comprising the following steps: detecting a start-up request setting start-up parameters providing film material commencing the film production setting film production parameters.
Claims14
A process for starting up a film production in a film manufacturing machine, wherein the film manufacturing machine is a blown film machine, by means of a control device, comprising the following steps:
- detecting a start-up request;
- setting start-up parameters;
- providing film material;
- starting an interior bubble-cooling means for creating a film bubble;
- commencing the film production;
- cutting or puncturing the film bubble upstream of a haul-off apparatus;
- and
- setting film production parameters.
A process for terminating a film production in a film manufacturing machine, wherein the film manufacturing machine is a blown film machine, by means of a control device, comprising the following steps:
- detecting a termination request;
- adjusting termination parameters to enable a controlled slowing of a film transport to a standstill, such that a remnant of the film produced remains in a film production line;
- and
- terminating the film production.
A blown film manufacturing machine, the blown film manufacturing machine comprising:
- at least one extruder for producing and providing molten plastic material;
- a die device from which the molten plastic material can be is drawn in the form of a film;
- at least one transport roll;
- at least one winding device whereby the film can be wound up;
- and
- at least one control device configured to issue control commands to:
- detect a start-up request;
- set start-up parameters;
- provide film material;
- start an interior bubble-cooling means for creating a film bubble;
- commence the film production;
- cut or puncture the film bubble upstream of a haul-off apparatus;
- and
- set film production parameters.
A computer program product comprising instructions which, when the program is executed on a control device comprising a computer, cause a film manufacturing machine to:
- detect a start-up request;
- set start-up parameters;
- provide film material;
- start an interior bubble-cooling means for creating a film bubble;
- commence the film production;
- cut or puncture the film bubble upstream of a haul-off apparatus;
- and
- set film production parameters.
Dependencies are inferred from the claim text.