Apparatus and form for making an air formed fibrous web
First Claim
1. A form for use in making an air formed fibrous web, the form comprising a foraminous surface having a width and a length greater than said width and adapted to collect fluent fibrous material driven by fluid pressure toward the foraminous surface to form the fibrous web, the foraminous surface including, in cross-section taken across the width of the form, a first section for collecting fluent fibrous material to a first depth, a second section for collecting fluent fibrous material to a second depth greater than the first depth, and a third section connecting the first and second sections, the second section including a bottom surface defining said second depth and having a first portion and a second portion, said second depth being greater at said first portion of the bottom surface than at said second portion, said second portion being in spaced relationship with said third section.
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Accused Products
Abstract
Apparatus for forming an air formed fibrous web has a form member on which fluent fibrous material is deposited in an air formed deposition process. The fibrous web may be used as an absorbent core of an absorbent article. The form member has a forming surface with a pocket for making a thicker portion of the fibrous web such as for a liquid holding formation of the absorbent core. The pocket has a bottom surface which is shaped so that additional material will be deposited in the pocket. A form member and an absorbent core made using the apparatus are also disclosed.
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Citations
14 Claims
- 1. A form for use in making an air formed fibrous web, the form comprising a foraminous surface having a width and a length greater than said width and adapted to collect fluent fibrous material driven by fluid pressure toward the foraminous surface to form the fibrous web, the foraminous surface including, in cross-section taken across the width of the form, a first section for collecting fluent fibrous material to a first depth, a second section for collecting fluent fibrous material to a second depth greater than the first depth, and a third section connecting the first and second sections, the second section including a bottom surface defining said second depth and having a first portion and a second portion, said second depth being greater at said first portion of the bottom surface than at said second portion, said second portion being in spaced relationship with said third section.
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14. A form for use in making an air formed fibrous web, the form comprising a foraminous surface having a width and a length greater than said width and adapted to collect fluent fibrous material driven by fluid pressure toward the foraminous surface to form the fibrous web, the foraminous surface including, in cross-section taken across the width of the form, a first section for collecting fluent fibrous material to a first depth and a second section for collecting fluent fibrous material to a second depth greater than the first depth, the second section including a bottom surface defining said second depth and having laterally opposite side edges, said bottom surface having a non-raised portion and at least one raised portion spaced inward of said side edges whereby the second depth of said second section is lesser at said at least one raised portion of the bottom surface than at said non-raised portion.
Specification