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Absorbent composite product and process and apparatus for manufacture thereof

A technology for composites and articles, applied in the direction of textiles and paper, absorbent pads, non-woven fabrics, etc., which can solve the problem that the composition, properties or dimensions cannot be changed

Inactive Publication Date: 2008-11-05
NORDSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Since the direct-to-slipper only handles pre-formed roll stock, it has serious operational disadvantages
That is, once multiple rolls are installed, the composition, properties or dimensions of the roll stock cannot be changed

Method used

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  • Absorbent composite product and process and apparatus for manufacture thereof
  • Absorbent composite product and process and apparatus for manufacture thereof
  • Absorbent composite product and process and apparatus for manufacture thereof

Examples

Experimental program
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Embodiment Construction

[0032] Detailed description of the preferred embodiment

[0033] As noted above, composite absorbent materials are prepared comprising at least three primary layers: (a) a topsheet, (b) an absorbent core, and (c) a substantially fluid-impervious backsheet. At least two of the layers are nonwovens prepared by extruding a thermoplastic polymer to form a nonwoven layer that is bonded in-line with the other two layers. As used herein, the term "in-line" means that the extruded nonwoven layer is continuously laminated with other layers without the usual intermediate steps of forming rolls of the nonwoven layer. Preferably, at least two layers are formed by in-line extrusion. In the most preferred embodiment, all three layers are formed by in-line extrusion.

[0034] Figure 1 illustrates the most preferred embodiment, comprising three stations: a top sheet formation station 201 , a bottom sheet formation station 202 , and a core sheet formation station 203 . A nonwoven is formed ...

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Abstract

A multi-layer absorbent product includes a fibrous nonwoven top sheet, a fibrous nonwoven absorbent core layer, and a fibrous nonwoven substantially water-impervious back sheet. Each component layer or sheet is manufactured at a fiberizing station and laminated together at a combining station. The preferred melt spinning apparatus is spunbond for the top sheet, meltblowing for the core layer, and a combination of spunbond and meltblowing for the bottom sheet.

Description

technical field [0001] The present invention generally relates to apparatus and methods for in-line manufacture of absorbent products. The apparatus and method use synthetic resins such as thermoplastic materials for the in-line manufacture of multilayer absorbent products. The present invention also relates to synthetic absorbent products comprising at least a water-impermeable nonwoven backsheet, an absorbent nonwoven core and a nonwoven topsheet. Background of the invention [0002] Equipment for in-line manufacture of absorbent products such as diapers, sanitary napkins, adult incontinence pads, etc. is generally referred to as converter equipment, and the process is generally referred to as converter equipment. This direct-to-sliver unit processes individual rolls of stock into synthetic absorbent products. The direct-to-sliver plant as a whole includes the following workstations for the manufacture of synthetic absorbent products: [0003] (a) Convey wet web stock, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/15D04H13/00
CPCA61F13/15634A61F13/15804D04H3/02D04H3/16A61F13/15211D04H13/00A61F13/15699
Inventor 马丁·A·艾伦
Owner NORDSON CORP
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