Stretch control for web materials being joined or laminated

Details Stretch control for web materials being joined or laminated Stretch control for web materials being joined or laminated

B - Operations, Transporting

65

H

154/38

B65H 39/16 (2006.01) B65H 23/182 (2006.01) G05D 15/01 (2006.01)

Patent

CA 1279246

ABSTRACT OF THE DISCLOSURE A stretch control device for use with two web materials being laminated comprising a supply roll of a first web material. Feed rolls deliver the master material past a dancer arm and set of feed rolls with an encoder or tach generator before delivering the master material at a constant tension to a laminating roll where a second material has been delivered of greater elasticity than the master material and having a different modulus of elasticity. The second material is fed over a dancer arm for adjusting the tension on the second material, so that both materials will be equally stretched when they are joined or laminated as in a disposable diaper assembly line.

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