Method of producing low cost elastic web

a nonwoven web and low cost technology, applied in the field of activation of nonwoven webs, laminates, composites, can solve the problems of limited use as textiles, inelastic nature of some nonwoven webs, and use of nonwoven fabrics, and achieve the effect of superior mechanical properties

Inactive Publication Date: 2006-03-23
TREDEGAR FILM PROD CORP
View PDF4 Cites 57 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013] In a further embodiment, an activated nonwoven web, laminate, or composite thereof is provided, whereby the material is produced by elongating the nonwoven web, laminate, or composite thereof precursor material a first time to provide a first elongated material, and the...

Problems solved by technology

One obstacle to the use of nonwoven fabrics has been the relatively inelastic nature of some nonwoven webs.
Inelastic fabric often is rough and uncomfortable and therefore of limited utility as a textile.
One of the disadvantages of activation of nonwoven...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of producing low cost elastic web
  • Method of producing low cost elastic web

Examples

Experimental program
Comparison scheme
Effect test

example

[0062] Samples of nonwoven (Sofspan® 200 supplied by BBA Nonwovens, One Lakeview Place—Suite 204, Nashville, Tenn. 37124 USA) and elastomeric formed film (Flexaire®, 40 gsm supplied by Tredegar Film Products, 1100 Boulders Parkway, Richmond, Va. 23225 USA) were vacuum bonded and activated between a pair a finned rollers produced by BIAX Fiberfilm (Biax-Fiberfilm Corporation, N992 Quality Drive, Suite B, Greenville, Wis. 54942 USA). The activation pattern as indicated in the tables refers to the depth of engagement of the teeth of the gear rollers. This is the maximum depth at which the ribs, grooves, or teeth of one activation roller penetrate between the ribs, grooves, or teeth of the opposing activation roller. For example, a 200 activation depth refers to a laminate being activated once, and to a depth of 200 mils (thousandths of an inch). A 200 / 200 pattern refers to a laminate being activated twice, to depths of 200 mils each time.

[0063] Samples with a gauge length of 2 inches ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Depthaaaaaaaaaa
Depthaaaaaaaaaa
Elongationaaaaaaaaaa
Login to view more

Abstract

A method for producing nonwoven webs, laminates, and composites thereof includes activating by elongation in at least a two-stage process wherein the first elongation is in substantially the same direction and to substantially the same degree as the second elongation.

Description

FIELD OF THE INVENTION [0001] Embodiments relate generally to methods for activating nonwoven webs, laminates, and composites thereof. More particularly, embodiments relate to the activation of nonwoven webs, laminates, and composites thereof for use in, for example, diapers, articles for the control of the effects of incontinence, bandages, and other hygiene articles. BACKGROUND OF THE INVENTION [0002] Nonwoven fabrics, especially inexpensive polymer-based nonwoven fabrics, have found increasing use in the textile market. Nonwoven fabrics typically are webs, batts, mats, sheets, or films of fiber networks. They are commonly referred to simply as “nonwoven webs” or “webs.” Many different natural, synthetic, and semi-synthetic polymer fibers are used to create nonwoven webs. Nonwoven webs may consist of one type of fiber, several different types of fibers, laminates of different fibers, and composites. The fibers may be staple (short fibers) or filaments (long fibers). Nonwoven webs ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): D04H5/00D04H13/00D04H1/00
CPCD06C3/00Y10T442/69Y10T442/60Y10T442/601B32B5/26B32B27/12D04H1/42D04H13/00D06C3/06D10B2509/026B32B2250/20
Inventor CHUNG, TZE WAN PANSYMIDDLESWORTH, JEFFREY ALAN
Owner TREDEGAR FILM PROD CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap