Method for making a fibrous laminated web
AssigneeKimberly-Clark Worldwide, Inc.
InventorMir Inayeth Alikhan
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Abstract
This invention relates to a method of making a fibrous laminated material wherein a first fibrous layer comprising a plurality of staple fibers or continuous filaments of a thermoplastic material and a second fibrous layer comprising a plurality of staple fibers or continuous filaments of two or more thermoplastic or other materials are bonded together in a spaced apart bonding pattern having apertures formed therein to form a fibrous laminate having improved liquid distribution and management properties as well as enhanced comfort and softness when placed in contact with human skin.
Claims16
A process for forming a laminated fibrous material comprising the steps of:
- a. providing a first fibrous layer comprising a plurality of fibers or filaments of one or more thermoplastic polymeric materials;
- b. providing a second fibrous layer comprising a plurality of fibers or filaments of two or more thermoplastic polymeric materials;
- c. bonding said first and second layers at an interface between said layers in a spaced apart bonding pattern comprising compacted bonding regions having a first degree of bonding separated by second, lesser bonded fiber spans by passing said first and second layers between opposedly positioned first and second thermal bonding rolls and contacting an outer surface of each said bonding rolls with one of said first and second layers as said first and second layers pass therebetween;
- said first and second bonding rolls having different raised bonding patterns on said outer surfaces thereof;
- said first bonding roll having a space apart raised bonding pattern on the outer surface thereof and said second bonding roll having a plurality of raised bonding points on the outer surface thereof;
- rotating said first bonding roll at a first rotational speed and rotating said second bonding roll at a second rotational speed, said first and second rotational speeds differing with a range of from about 4% to about 20%;
- maintaining said first bonding roll at a first bonding temperature with the range of from about 260.degree. F. to about 285.degree. F. and maintaining said second bonding roll at a second bonding temperature within the range of from about 270.degree. F. to about 320.degree. F., said first and second bonding rolls being maintained at different bonding temperatures;
- and
- forming apertures within said bonding regions simultaneously with said bonding of said layers as said first and second layers are passed between said first and second bonding rolls.
Dependencies are inferred from the claim text.