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US 2008/0223513 A1Published application
Method and Device for Connecting Two Flexible Material Layers
OwnerHans-Joachim Wichmanninventor
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OwnerHans-Joachim Wichmanninventor
Estimating the term…
The manufacture of a product comprising at least two flexible material layers (14, 15) which are connected to each other by means of an adhesive coating applied to mutually facing inner surfaces of the material layers (14, 15), wherein the material layers (14, 15) are pressed together and are then intermittently perforated, is successfully achieved in a simple manner by virtue of the fact that, simultaneously with the perforation, adhesive (16) is injected from at least one outer side of the material layers (14, 15) into the formed perforation holes, whereupon the adhesive (16) is conducted into the interspace between the material layers (14, 15).
A process for manufacturing a product comprising at least two flexible material layers (14, 15) which are connected to each other by means of an adhesive coating applied to mutually facing inner surfaces of the material layers (14, 15), wherein the material layers (14, 15) are pressed together and are then intermittently perforated, characterized in that, simultaneously with the perforation, adhesive (16) is injected from at least one outer side of the material layers (14, 15) into the formed perforation holes, whereupon the adhesive (16) is conducted into the interspace between the material layers (14, 15).
A device for connecting two flexible material layers (14, 15) by means of an adhesive coating applied to mutually facing inner surfaces of the material layers (14, 15), characterized by a first shaped part (1) and a second shaped part (2) for pressing the material layers together, which shaped parts are movable relative to each other and in the closed state form a closed-off chamber (7) traversed by the material layers (14, 15);
Dependencies are inferred from the claim text.