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US 2025/0100230 A1Published application
Weld Seam, Method and Device for Connecting Plastics Films by Thermal Joining, and Use of a Blow-Forging Press
OwnerMathias Kottinventor
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OwnerMathias Kottinventor
Estimating the term…
Weld seam, method and device for connecting plastic films (10) by thermal joining, wherein the plastic films (10) are connected between welding jaws (2, 4) along a weld seam (12). According to the invention, the device comprises a pair of unheated welding jaws (2, 4) between which the plastic films (10) are arranged parallel to each other for thermal joining. A device for impulse generation (30) applies an impact impulse to one of the welding jaws (2, 4) with a penetration time into the plastic films (10) of less than 10 ms with a first intensity (Fi1). The impact impulse acts on the plastic films (10), wherein a heating in the material caused by deformation is produced and the weld seam (12) is formed in an effective area of the welding jaws (2, 4); use of a blow-forging press.
A weld seam for connecting plastic films (10), produced by thermal joining between welding jaws (2, 4), characterized in that an impact impulse, a stroke movement of at least one of the welding jaws (2, 4) perpendicular to the film layer, with a penetration time of at least one of the welding jaws (2, 4) into the plastic films (10) of less than 10 ms, acts on the unheated plastic films (10) arranged in parallel between a pair of unheated welding jaws (2, 4), the impact impulse having at least a first intensity (Fi1) by which the weld seam (12) is formed, the plastic melted by the impact impulse being restricted to the weld seam (12).
A method for connecting plastic films (10) by thermal joining between welding jaws (2, 4), wherein the plastic films (10) are connected along a weld seam (12), characterized in that an impact impulse, a stroke movement of at least one of the welding jaws (2, 4) extending perpendicularly to the film layer, with a penetration duration of at least one of the welding jaws (2, 4) into the non-preheated plastic films (10) arranged parallel to one another, is shorter than 10 ms, acts on the plastic films (10) with at least a first intensity (Fi1), causes a heating in the material due to deformation and forms the weld seam (12).
A device for connecting plastic films (10) by thermal joining, wherein the plastic films (10) are connected between welding jaws (2, 4) along a weld seam (12), characterized in that the device (1) comprises a pair of unheated welding jaws (2, 4) between which the unheated plastic films (10) are arranged parallel to each other for thermal joining, wherein a device for impulse generation (30) generates an impact impulse, a stroke movement of at least one of the welding jaws (2, 4) perpendicular to the film layers with a penetration time of at least one of the welding jaws (2, 4) into the plastic films (10) of less than 10 ms, having at least a first intensity (Fi1) into at least one of the welding jaws (2, 4), wherein the impact impulse acts on the plastic films (10), a heating in the material of the plastic films (10) caused by deformation is produced and the weld seam (12) is formed in an effective area of the welding jaws (2, 4).
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Dependencies are inferred from the claim text.