Maro Publications

Nonwoven Fabrics

Patent Abstracts

*9/13/2012
from 4/19/2012

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Patents with Abstracts

7. 8,303,288 
Machine for manufacturing nonwoven fabric
 
Huang, Kuo and  Peng of Taiwan Textile Research Institute, Taiwan, developed a machine for manufacturing a nonwoven fabric includes a conveyer net, a spunbonding apparatus, and a container. In use, the spunbonding apparatus can project at least one fiber onto the conveyer net. The container can contain liquid, wherein the liquid level of the container is higher than at least a part of the conveyer net which the fiber is projected onto. (RDC 11/24/2012)

6. 8,257,626 
Felt body manufacturing method
 
Kuhl of Groz-Beckert KG, Germany,  formed spatial objects of a fleece or felt by depositing fibers on an air permeable mold.  The fibers may be attracted to the mold by a vacuum applied to the underside of said mold. Preferably, the mold has several spatial structures that define the shape of the fiber web that is being formed and that correspond at least approximately to the desired final shape.  By subsequent compacting of the thusly obtained fiber web, a spatially three-dimensional felt object is obtained. (RDC 9/10/2012)

5. 8,240,009 
Non-woven fiber assemblies
 
Smith and Reneker of the University of Akron, Ohio, developed a non-woven fiber material consisting of one or more fibers with an adhesive where each fiber contains: a hydrophilic component; and an elastomeric component.  This material can used for a medical dressing.  (RDC 8/14/2012)

4. 8,231,370 
Apparatus and method for depositing synthetic fibers to form a non-woven web
 
Maas, Rave and Harris of Oerlikon Textile GmbH & Co. KG., Germany, developed an apparatus for depositing synthetic fibers to form a non-woven web by guiding the synthetic fibers by a blowing stream through a drawing unit for depositing on a deposit belt.  Multiple guidance elements are arranged inside the guidance distance between a blast opening of the drawing unit and the deposit belt, and form a guidance channel above the deposit belt.  The guidance elements form a channel opening at a distance from the blast opening of the drawing unit. In order to achieve constant strength in the deposition of the fiber strands, the distance between the outlet of the drawing unit and the channel opening of the guidance channel is larger than half the guidance distance, and the guidance width of an open space formed between the outlet of the drawing unit and the channel opening of the guidance channel is larger than the guidance channel. (RDC 8/6/2012)

3. 8,193,104 
Crosslinkable cationic emulsion binders and their use as a binder for nonwovens
 
Parson, Walker and Barcomb of Celanese, Texas, developed a cationic polymer emulsion binder that may be combined with a cationic active ingredient and used as a non-woven binder. This combination of cationic binder and cationic active ingredient may occur as a mixture of a cationic binder and at least one cationic active ingredient, which is then applied to loose fibers to form a non-woven; or the combination may occur after a non-woven is formed using a cationic binder, and said non-woven is then contacted with a cationic active ingredient. Non-woven wipes of the invention retain far less cationic active ingredients during use, resulting in less waste and less use of the active ingredients for the same effect as wipes made with anionic or non-ionic binders. (RDC 6/26/2012)

2. 8,129,298 
Nonwoven laminates and process for producing the same
 
Motomura, Suzuki and  Kunimoto of Mitsui Chemicals, Japan, developed a nonwoven fabric laminate with excellent elasticity, softness, water resistance, fuzz resistance, curl resistance, and less stickiness.  The nonwoven fabric laminate includes at least one meltblown nonwoven fabric layer and mixed-fiber spunbonded nonwoven fabric layers on both surfaces of the at least one meltblown nonwoven fabric layer, the mixed-fiber spunbonded nonwoven fabric layers each comprising mixed fibers including 10 to 90 wt % of continuous fibers of a thermoplastic elastomer (A) and 90 to 10 wt % of continuous fibers of a thermoplastic resin (B) other than the thermoplastic elastomer (A) ((A)+(B)=100 wt %). (RDC 4/19/2012)

1. 8,129,297 
Method and apparatus for heating nonwoven webs
 
Cleary et al of Dupont, Delaware developed a process for drying/heat-treating nonwoven webs in which the web is partially dried under tension in a first drying zone and further heat treated under low tension or in a substantially tensionless state a second drying zone. The process significantly reduces the occurrence of stretch-type defects in the nonwoven webs.  (RDC 4/19/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

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E-Mail: cornelrd@bee.net  

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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 4/19/2012.