Method and apparatus for applying discrete lengths of elastic strip material to a continuously moving web
AssigneeKimberly-Clark Corporation
InventorRichard H. Frick
Life of this patent
Estimating the term…
Abstract
A method and apparatus for applying discrete lengths of elastic strip material to predetermined areas of a continuously moving web by corrugating the web and applying the discrete lengths of substantially unstretched adhesively coated elastic over the corrugations in predetermined areas, bonding the elastic to the areas, and withdrawing the web from the corrugations to stretch the elastic; and the conformable garment produced thereby which may be in the form of an elasticized leg disposable diaper.
Claims14
Apparatus for applying discrete lengths of elastic strip material to predetermined longitudinal areas of a continuously moving web comprising, in combination:
- a substantially cylindrical drum having a multiplicity of substantially uniform parallel grooves, extending longitudinally and formed in the surface of said drum, and means for rotating said drum,
- means for feeding said web to said rotating drum at a predetermined rate and for pressing said web into said grooves so as to corrugate said web,
- means for supplying a continuous strip of adhesively coated elastic material for application to said web on said drum,
- means for severing said adhesively coated elastic material into discrete lengths before transferring said discrete lengths to predetermined areas of web on said drum in timed relation to the rotation of said drum,
- means for bonding said discrete lengths of elastic to said web on said drum with said adhesive interposed between said elastic lengths and said web, and
- means for removing said web and attached discrete lengths of elastic from said drum and pulling out said corrugations pressed into said web so as to stretch said discrete length of elastic bonded to said web and to return said web in areas between successive ones of said discrete lengths of elastic to a substantially flat uncorrugated condition.
A method of applying discrete lengths of elastic strip material to predetermined areas of a continuously moving web comprising the steps of:
- feeding the web material at a predetermined rate to a rotating corrugating drum having a multiplicity of substantially uniform parallel grooves in the surface thereof,
- pressing the web into said grooves,
- drawing a continuous strip of adhesively coated elastic material from a supply source,
- severing a continuous strip of adhesively coated elastic into discrete lengths,
- transferring said discrete lengths of elastic to said web on said drum at predetermined intervals,
- bonding said discrete lengths of elastic to said web on said drum, and
- removing said web and attached discrete lengths of elastic from said drum and pulling out said corrugations pressed into said web so as to stretch said discrete lengths of elastic bonded to said web and to return said web in areas between successive ones of said discrete lengths of elastic to a substantially flat uncorrugated condition.
Dependencies are inferred from the claim text.