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Composite structures containing tissue webs and other nonwovens

A technology of gauze net and gauze, applied in the direction of non-woven fabrics, textiles and papermaking, textiles, etc., can solve the problem of unsuitable or disposable use, expensive scrubbing pads, dirt, grease, bacteria and other pollutants Dirty and other issues

Inactive Publication Date: 2007-01-17
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] These scrubbing pads are becoming more expensive, making them unsuitable as single-use or single-use products
However, due to the inherent nature of product use, these products can become soiled with dirt, grease, bacteria and other contaminants after only one or two uses
As a result, consumers must frequently replace these expensive scrubbing pads in order to feel safe after they use uncontaminated cleaning pads

Method used

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  • Composite structures containing tissue webs and other nonwovens
  • Composite structures containing tissue webs and other nonwovens
  • Composite structures containing tissue webs and other nonwovens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0219] Preparation of non-wrinkled air-permeable dry substrate

[0220] Suitable substrates were prepared to demonstrate the improved dry feel of the textured, wet rebound absorbent web. This substrate was manufactured on continuous tissue paper production equipment suitable for non-creped air drying. The machine consists of: a fourdrinier forming section, a transfer section, an air drying section, a post transfer section and a reel. 100% bleached chemical thermomechanical pulp (BCTMP), beaten for 45 minutes at about 4% consistency before dilution, to prepare a diluted aqueous slurry at about 1% consistency. Such BCTMP is commercially available, eg, as Millar-Western 500 / 80 / 00 ​​(Millar-Western, Meadow Lake, Saskatchewan, Canada). To this aqueous slurry was added Kymene 557LX wet strength agent manufactured by Hercules, Inc. (Wilmington, Delaware) at a dosage of about 16 kg Kymene / ton dry fiber, which is carboxymethyl fiber at a dosage of 1.5 kg / ton dry fiber white. The sl...

Embodiment 2

[0223] Laminate with first meltblown polypropylene web

[0224] A high molecular weight isotactic polypropylene, Achieve 3915, produced by Exxon Mobil Chemical Comp. (Houston, Texas), was used in a small-scale meltblown facility to fabricate polymer networks by meltblown fiberization. The polymer molecular weight range is about 130,000 to 140,000. According to the manufacturer, the melt flow rate of the polymer according to ASTM D1238 is 70 g / 10 min, which is believed to be below the range of melt flow rates typical for meltblowing operations; polymers are often used in spunbond operations, or meltblown Other applications than (for example, a typical melt blown polymer, such as ExxonMobil Chemical Corp.'s polypropylene PP3546G, with a melt flow rate of 1200 g / 10 minutes, measured according to ASTM D1238, and the same manufacturer's polypropylene PP3746G, Melt flow rate 1500 g / 10 min). High viscosity materials were found to be surprisingly useful for making the coarse meltblo...

Embodiment 3

[0248] Second Meltblown Polypropylene Mesh

[0249] Bassell PF015 polypropylene manufactured by Bassell North America (Wilmington, Delaware), which has a nominal processing temperature of about 221° C., was used to make the second meltblown polypropylene web to be used to make the laminate with the tissue web products. A pilot plant different from Example 2 was used. Meltblown webs were fabricated through a meltblown tip (30 holes / inch, hole diameter 0.0145 inches), produced at 4 lbs / inch machine width per hour (4PIH). The coarseness (coarseness) of the fibers was achieved by gradually reducing the processing temperature and primary air pressure while varying the target basis weight between about 50 gsm and 100 gsm. The line speed was 78 ft / min for the 50 gsm meltblown and 39 ft / min for the 100 gsm meltblown. The initial processing temperature was about 500°F (260°C), which was lowered to between about 392°F (200°C) and about 410°F (210°C), resulting in a die tip temperatur...

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Abstract

The present invention discloses a disposable scrubbing product (30) for household cleaning or personal care. In one embodiment, the present invention is directed to a cleaning implement comprising a handle (210) and a rigid base (220) to which the scouring product (30) of the present invention can be attached to form a convenient cleaning implement. The scouring product (30) of the present invention is a multilayer laminate product and generally comprises at least two distinct layers, an abrasive layer and an absorbent fibrous layer, such as a tissue web layer made of papermaking fibers. The abrasive layer is formed primarily of polymeric fibers distributed in a chaotic or random manner, typical of fibers deposited by meltblowing or spunbonding processes, resulting in an open porous structure. In one embodiment, a binder such as synthetic fibers is incorporated into the tissue web layer to form a bond with the abrasive layer when forming a laminate according to the present invention.

Description

Background of the invention [0001] Abrasive scouring pads are commonly used in many cleaning and personal care tasks. Scrubbing pads generally include naturally occurring abrasives or industrially produced abrasives. Typical examples of abrasives used in the past include: pumice stones, loofahs, steel wool, and various plastics. In these products, nonabsorbent abrasives are often combined with absorbent spongy backing materials. For example, abrasives often form a layer on a multilayer product that also includes an absorbent layer of natural sponge, regenerated cellulose, or some other type of absorbent foam product. [0002] These scrub pads tend to be expensive, making them unsuitable as disposable or single-use products. However, due to the inherent nature of product use, these products can become soiled with dirt, grease, bacteria and other contaminants after only one or two uses. As a result, consumers must frequently replace these expensive scrubbing pads in order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/26B32B7/04A47L13/16A47L17/08D04H13/00
CPCD04H13/007A47L17/08A45D2200/1018B32B5/26A45D2200/1036A47L13/16D04H13/002B32B7/04D04H1/425D04H1/559D04H1/56D04H3/16Y10T428/24826Y10T442/68Y10T442/659B32B2262/0253B32B2262/0276B32B2262/0261B32B2432/00B32B5/08B32B2555/00B32B27/32B32B27/36
Inventor 陈芳洲J·D·林德赛
Owner KIMBERLY-CLARK WORLDWIDE INC