Synthetic paper
AssigneeInternational Paper Company
InventorsRichard C. Williams, Gary H. Knauf
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Abstract
The specification discloses a synthetic paper composite web containing a relatively smooth, dense top layer comprising synthetic pulp, a relatively soft non-woven base layer of synthetic filaments and a low density polyolefin film layer substantially continuously interbonding the top and base layers together along their interface. An advantage of the composite of the invention is that it is substantially weather resistant, strong, recyclable and compatible with a range of inks and printing systems.
Claims18
A synthetic paper composite web consisting essentially of a top layer comprising synthetic pulp, a base non-woven layer comprising randomly oriented interbonded polymeric filaments and a film layer disposed between the top and base layers consisting essentially of a low density polyolefin, the film layer substantially continuously interbonding the top and base layers together adjacent the interfaces between the top layer and the film and between the base layer and the film, respectively, on opposite surfaces of the film layer.
A synthetic composite web which comprises a top layer of polymeric pulp, a base layer of spunbond fibers disposed adjacent the top layer having a plurality of relatively small spaced apart concavities on its surface facing the top layer and a layer disposed between the top and base layers consisting essentially of a low density polyethylene substantially continuously interbonding the top and base layers together wherein the polyolefin and base layers are disposed in said concavities.
Dependencies are inferred from the claim text.