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US 9,782,927 B2Granted
Method and device for joining transfer or laminating film webs
AssigneeOVD Kinegram AG
InventorsAchim Hansen, Thomas Bernet
Life of this patent
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Abstract
A description is given of a method for joining a first and a second film web (2, 2′) of a transfer film or laminating film, wherein the film webs (2, 2′) comprise a thermoplastic carrier film (21) and a decorative layer (23). Formed between the first and second film webs (2, 2′) is a common joining portion (3), in which the first and second film webs (2, 2′) are joined to each other by a welding process. A device for carrying out the method is also described.
Claims16
A method for joining an end portion of a first film web to an end portion of a second film web, the method comprising:
- providing a first transfer film to form the first film web, the first transfer film comprising a thermoplastic carrier film, a decorative layer and a separating layer disposed between the carrier film and the decorative layer for facilitating removal of the decorative layer from the carrier film of the first transfer film;
- providing a second transfer film to form the second film web, the second transfer film comprising a thermoplastic carrier film, a decorative layer and a separating layer disposed between the carrier film and the decorative layer for facilitating removal of the decorative layer from the carrier film of the second transfer film;
- bringing the end portions of the first and second film webs together, wherein the first and second film webs are aligned in a longitudinal direction and a common joining portion is formed between the first and the second film web;
- and
- moving a weld head having two weld tips across the common joining portion in a direction perpendicular to the longitudinal direction to form a double weld seam in the common joining portion, in which the end portions of the first and second film webs are joined to each other by a welding process.
2 more elements
Dependencies are inferred from the claim text.