Non-woven fabrics
AssigneeLantor International Limited
InventorRoger LePoutre
Life of this patent
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Abstract
A process for the manufacture of non-woven fabric which comprises the following steps: A. impregnating a web of non-woven fibers with a chemical binder capable of thermal polymerization and with a curing agent for the binder, B. coagulating but not drying the binder, to form a non-woven fabric, C. coating one face of the fabric with a paste or foam of a waterproofing agent, D. drying the impregnated and coated fabric and E. heat embossing the non-coated face of the fabric; non-woven fabric whenever made by the above process.
Claims14
A process for the manufacture of non-woven fabric which consists essentially of the following steps:
- a. impregnating a web of non-woven fibres with a chemical binder capable of thermal polymerisation and with a curing agent for the binder,
- b. coagulating but not drying the binder, to form a non-woven fabric,
- c. coating one face of the fabric with a layer of a waterproofing agent,
- d. drying the impregnated and coated fabric and
- e. heat embossing the non-coated face of the fabric.
Dependencies are inferred from the claim text.