Method for producing a backsheet for absorbent sanitary articles and an absorbent sanitary article including this backsheet

Patent metadata

Field	Value
Publication number	US-10076455-B2
Application number	US-201514931589-A
Country	US
Kind code	B2
Filing date	Nov 3, 2015
Priority date	Nov 6, 2014
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

A method for producing a backsheet for absorbent sanitary articles provided with hook-and-loop fasteners, comprising the steps of: advancing a continuous web of fibrous material without support at a first speed, cutting the continuous web of fibrous material in a transverse direction so as to form sections of fibrous material, accelerating the sections of fibrous material at a second speed greater than said first speed, welding said sections of fibrous material spaced apart at constant intervals onto a continuous non-woven support web advancing at said second speed, so as to convert said sections of fibrous material into frontal tapes of loop-material for hook-and-loop fasteners, and fixing a continuous impermeable film to said continuous non-woven support web with said frontal tapes of loop-material, so as to form a continuous backsheet web provided with frontal tapes of loop-material spaced apart at constant intervals.

First claim

The invention claimed is:

1. A method for producing a backsheet for absorbent sanitary articles provided with hook-and-loop fasteners, comprising the steps of:
advancing a continuous web of fibrous material without support at a first speed;
cutting the continuous web of fibrous material without support in a transverse direction so as to form sections of fibrous material;
accelerating the sections of fibrous material at a second speed greater than said first speed;
welding said sections of fibrous material spaced apart at constant intervals onto a continuous non-woven support web advancing at said second speed, so as to convert said sections of fibrous material into frontal tapes of loop-material for hook-and-loop fasteners; and
fixing a continuous impermeable film to said continuous non-woven support web with said frontal tapes of loop-material, so as to form a continuous backsheet web provided with frontal tapes of loop-material spaced apart at constant intervals.

2. A method according to claim 1 wherein said continuous web of fibrous material without support comprises a material with longitudinally-oriented fibers.

3. A method according to claim 1 , wherein the welding of said sections of fibrous material to said continuous non-woven support web is carried out by means of welding lines arranged in a transverse direction.

4. A method according to claim 1 , wherein the fixing of the continuous impermeable film to said continuous non-woven support web with said frontal tapes of loop-material is carried out by gluing.

Assignees

• Fameccanica Data Spa

Inventors

• Bonelli Guido
• Gualtieri Diego

Classifications

• Y10T156/1077

  Applying plural cut laminae to single face of additional lamina · CPC title

• A61F13/622

  Fabric strip fastener elements, e.g. hook and loop · CPC title

• A61F13/62 Primary

  {Mechanical fastening means (A61F13/5611, A61F13/5616, A61F13/581 take precedence);} Fabric strip fastener elements, e.g. hook and loop (A61F13/66 takes precedence) · CPC title

• A61F13/15577 Primary

  Apparatus or processes for manufacturing · CPC title

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title