Hydroentangled web with ultrafine fibers

a technology of ultrafine fibers and nonwovens, applied in the field of disposable nonwoven web composition, can solve the problems of poor wet strength and achieve the effect of rapid water dispersibility and high wet strength

Inactive Publication Date: 2018-09-06
JACOB HOLM & SONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a nonwoven web product made of biodegradable and sustainable raw materials that is strong enough to perform tasks like wiping, but also quickly disperses in water to be suitable for disposal in sewer and septic systems. This is achieved without using adhesives, binders, or binding fibers, and with minimal processing.

Problems solved by technology

However, U.S. Pat. No. 5,292,581 to Viazmensky et al. indicates that such products suffer from poor wet strength and describe that the addition of binders substantially improves the strength.

Method used

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  • Hydroentangled web with ultrafine fibers
  • Hydroentangled web with ultrafine fibers
  • Hydroentangled web with ultrafine fibers

Examples

Experimental program
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examples

[0056]Five hydroentangled webs were prepared according to the first embodiment as described previously. The webs are designated as JH1, JH2, JH3, JH4 and JH5. All webs were based on air layered mats which were hydroentangled. JH1 and JH2 were prepared with 1.9 denier and 2.0 denier viscose fiber and are not according to the present invention. JH3, JH4 and JH5 were prepared with viscose fiber of less than 1.0 denier at differing density (Dry Basis Weight−Dry BW). Wet strength and Slosh Box break up time were measured for each of the samples in comparison to commercially available wet wipe products.

[0057]The results are shown in the Table of FIG. 3. As indicated each of samples JH3, JH4 and JH5 have significantly faster break-up times while having comparable or greater CD wet strength. For JH3 and JH5, having a dry basis weight between 60 and 70 g / m2, the CD wet strengths are unexpectedly greater than any of the other listed samples. This combination of high CD wet strength and rapid ...

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Abstract

A hydroentangled nonwoven fibrous composition, comprising as a hydroentangled web from 60 to 90% by weight of defibrated or refined natural cellulose fibers; and from 10 to 40% by weight of manmade sustainable fibers and a method to prepare the fibrous composition is provided. The nonwoven fibrous hydroentangled web comprises no binder, adhesive or thermal bonding fiber and has sufficient wet strength to be usable as a wipe and water dispersibility to be suitable as a flushable product for disposal in a municipal sewer system. A disposable wipe containing the hydroentangled nonwoven fibrous composition is also provided.

Description

FIELD OF THE INVENTION[0001]This invention is directed to a disposable nonwoven web composition having sufficient wet strength to be useful as a consumer wipe product while having rapid dispersibility in an aqueous medium such as sewer or septic system and a continuous method for preparing the disposable nonwoven webs which employs a minimal number of operations. The nonwoven web based wipe is economical to produce, is constructed of manmade sustainable and naturally derived raw materials and contains no synthetic binders or thermoplastic resins. Wipes prepared with the disposable nonwoven web of the embodiments of this invention are advantageous for having good wet strength and rapid water dispersibility thus avoiding clogging of sewer systems, requiring less wear and stress on municipal sewer pumps and displaying rapid biodegradation in standard sewage systems.BACKGROUND OF THE INVENTION[0002]Disposable nonwoven substrates are employed for the production of a wide variety of consu...

Claims

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Application Information

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IPC IPC(8): D04H1/492A47K7/00
CPCA47K7/00D04H1/492
InventorKNOWLSON, RICHARDMARIANI, ERIC
OwnerJACOB HOLM & SONS