Method for modifying the physical and/or chemical characteristics of a fibrous band and apparatus for carrying out the method
AssigneeGiorgio Trani
InventorsGiorgio Trani, Marion Sterner
Life of this patent
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Abstract
A method for modifying the physical and/or chemical characteristics of a web of paper material includes the steps of causing a web of paper material, having a dry content between 1% and 90%, to adhere to an endless conveyor belt of elastic material, subjecting the conveyor belt and the web to at least one localized dimensional variation, and introducing at least one additive between the fibers of the web while adhering to the belt before or during the localized dimensional variation.
Claims14
A method of modifying physical and/or chemical characteristics of a web of paper material, comprising:
- causing a web (2) of paper material, having a dry content between 1% and 90%, to adhere to an endless conveyor belt (4) of elastic material;
- subjecting said conveyor belt and said web to at least one localized temporary dimensional variation;
- and
- introducing at least one additive between fibers of said web while adhering to said belt before or during said localized temporary dimensional variation thereof.
(canceled)
An apparatus for modifying physical and/or chemical characteristics of a web of paper material, comprising:
- a conveyor belt (4) of elastic material;
- a member (12) configured to dispose a web (2) of fibrous material having a dry content between 1% and 90% on said conveyor belt (4) and for maintaining said web adhering thereto during said localized dimensional variation;
- a system configured to cause at least one localized dimensional variation of said conveyor belt and of said web adhering to said conveyor belt;
- and
- a system configured to introduce at least one additive between fibers of said web before or during said localized dimensional variation of said elastic belt.
Dependencies are inferred from the claim text.