초록 ▼

The specification discloses a method for laminating a synthetic film or sheet to a fibrous web. According to the method, a heat-softenable material is combined as a sheet, film, spray or powder with a continuous fibrous web in interfacial contact with fibers of the fibrous web to form a composite. T

The specification discloses a method for laminating a synthetic film or sheet to a fibrous web. According to the method, a heat-softenable material is combined as a sheet, film, spray or powder with a continuous fibrous web in interfacial contact with fibers of the fibrous web to form a composite. The composite is then continuously conducted through an extended nip dryer where heat and pressure are applied to the composite to effect a substantial reduction in moisture content of the composite while plasticizing the heat-softenable material so that at least a mechanical bond is formed between the material and the fibers of the web characterized by an intermingling of the fibers and the heat-softenable material.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for laminating a synthetic film or sheet to a fibrous web which comprises continuously depositing an aqueous slurry of fibers on a moving foraminous support leaving fibers deposited thereon as a continuous fibrous web, continuously pressing the web to consolida

[ What is claimed is:] [1.]1. A method for laminating a synthetic film or sheet to a fibrous web which comprises continuously depositing an aqueous slurry of fibers on a moving foraminous support leaving fibers deposited thereon as a continuous fibrous web, continuously pressing the web to consolidate the fibers to provide a pressed fibrous web having a moisture content of at least about 40% by weight water, continuously combining the pressed fibrous web with a continuous layer containing a thermoplastic or thermoset material in interfacial contact with fibers of the fibrous web to provide an at least two-layer continuous composite having opposed outer surfaces and continuously conducting the composite through an extended nip dryer while applying pressure substantially simultaneously to the opposed outer surfaces of the composite and applying heat to at least one of the surfaces to cause evaporation of water from the fibrous web reducing the moisture content thereof to below about 40% by weight water and plasticizing the thermoplastic or thermoset material so that at least a mechanical bond is achieved between the layer and the fibrous web characterized by an intermingling of fibers of the fibrous web with the thermoplastic or thermoset material in the layer.