Process for producing sandwich structures with particulate material pattern

a technology of particulate material and sandwich structure, which is applied in the direction of paper/cardboard containers, mechanical control devices, instruments, etc., can solve the problems of limiting the free distribution of liquid to the more absorbent areas of the core, and no broadly applicable teaching on how to arrive at the best suitable design with the best process setting

Inactive Publication Date: 2006-03-09
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] and bonding the carrier and cover web material to form the sandwich structure, thereby immobilizing the pattern.

Problems solved by technology

Moreover, the provision of such pockets may hinder the free distribution of liquid to the more absorbent areas of the core, for example the areas of the absorbent polymer materials.
Further, whilst certain optimum conditions for each of these approaches may be read or deduced from the disclosures, there is no broadly applicable teaching as to how to arrive at the best suitable design with the best process settings, in particular for varying boundary conditions, like varying pattern, or lay-down basis weights, such as may be necessary for a complete product range.

Method used

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  • Process for producing sandwich structures with particulate material pattern
  • Process for producing sandwich structures with particulate material pattern
  • Process for producing sandwich structures with particulate material pattern

Examples

Experimental program
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Embodiment Construction

[0042] As used herein, the following terms have the following meanings:

[0043]“Absorbent article” refers to devices that absorb and contain liquid, and more specifically, refers to devices that are placed against or in proximity to the body of the wearer to absorb and contain the various exudates discharged from the body. Absorbent articles include but are not limited to diapers, adult incontinence briefs, training pants, diaper holders and liners, sanitary napkins and the like.

[0044]“Diaper” refers to an absorbent article generally worn by infants and incontinent persons about the lower torso.

[0045]“Disposable” is used herein to describe articles that are generally not intended to be laundered or otherwise restored or reused (i.e., they are intended to be discarded after a single use and, preferably, to be recycled, composted or otherwise disposed of in an environmentally compatible manner).

[0046]“Comprise,”“comprising,” and “comprises” is an open ended term that specifies the p...

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Abstract

The present invention is concerned with a process for forming a very well defined pattern of particulate material in a composite material comprising a web material and particulate absorbent material. The present invention relates also to a method for determining the equipment design and process parameter for such a process. In a particular application, the present invention provides a process for preparing liquid absorbent structures, such as may be useful for disposable absorbent articles.

Description

FIELD OF THE INVENTION [0001] The present invention is a process for forming a very well defined pattern of particulate material in a composite material comprising a web material and particulate absorbent material. The present invention relates also to a method for determining the equipment design and process parameter for such a process. In a particular application, the present invention provides a process for preparing liquid absorbent structures, such as may be useful for disposable absorbent articles. BACKGROUND [0002] Composite structures comprising particulate material in a particular pattern are well known in the art, see, e.g. EP-A-1447066 (Busam et al.; P&G), disclosing an absorbent core for an absorbent article, which has a particulate absorbent material that is immobilized when wet. The absorbent core comprises a substrate layer an absorbent material, such as an absorbent polymer material. [0003] U.S. Pat. No. 4,381,783 (Elias) discloses an absorbent article with a core c...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B32B37/00B65C9/40A61F13/15
CPCA61F13/15658Y10T156/1025A61F13/15804A61F13/5323B05C1/0804B05C1/0808B05C1/0817B05C11/1039B05C19/04G06F17/5009A61F13/15634B32B37/00B32B2250/03B32B2307/726B32B2555/02A61F13/51476A61F13/535A61F2013/53051Y10T156/1023Y10T156/10Y10T156/1002Y10T156/1007A61F13/15764A61F13/15A61F13/472A61F13/53A61F2013/15821A61F2013/530481G06F30/20Y10T428/24628
Inventor BLESSING, HORSTJACKELS, HANS-ADOLF
Owner THE PROCTER & GAMBLE COMPANY
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