Device for laying a resistance wire in an undulating shape on the interposed thermoplastic film of a laminated glazing
First Claim
1. A device for laying and attaching a resistance wire having an undulating shape to a thermoplastic support film for the production of a laminated glazing that can be heated electrically, comprising:
- a heated pressure roller mounted so as to roll over the support film to embed the resistance wire in the film;
a support for a wire bobbin;
a wire guide device; and
a pair of wire-deforming gears mounted between said wire bobbin support and said heated pressure roller, said pair of wire-deforming gears engaging one another to deform wire fed therebetween, wherein at least one of said wire-deforming gears is driven by said heated pressure roller with a predetermined speed ratio such that a peripheral speed of said wire-deforming gears is less than a peripheral speed of said pressure roller.
1 Assignment
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Accused Products
Abstract
A device for laying and attaching a resistance wire (2) to a thermoplastic support film (1) for the production of a laminated glazing that can be heated electrically. The device includes a support (26, 27) for a wire bobbin (28), a wire guide device and a heated pressure roller (10) embedding resistance wire (2) in the support film. Between support (26, 27) for wire bobbin (28) and heated pressure roller (10), two gears (21, 22) are provided which mutually mesh, grasp wire (2) between them and deform the wire in an undulating manner. At least one of gears (21, 22) is driven by pressure roller (10) rolling over support film (1).
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Citations
8 Claims
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1. A device for laying and attaching a resistance wire having an undulating shape to a thermoplastic support film for the production of a laminated glazing that can be heated electrically, comprising:
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a heated pressure roller mounted so as to roll over the support film to embed the resistance wire in the film; a support for a wire bobbin; a wire guide device; and a pair of wire-deforming gears mounted between said wire bobbin support and said heated pressure roller, said pair of wire-deforming gears engaging one another to deform wire fed therebetween, wherein at least one of said wire-deforming gears is driven by said heated pressure roller with a predetermined speed ratio such that a peripheral speed of said wire-deforming gears is less than a peripheral speed of said pressure roller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification