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High tensile modulus nonwoven fabric for cleaning printer machines

Inactive Publication Date: 2008-04-10
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0037]The presence of the binder fibers in the cleaning fabric provide an increase in MD grab modulus and a decrease in XD necking. All the strength data provided is for dry samples. Lubed samples show similar results.

Problems solved by technology

However, recycled paper produces more lint than new (i.e., non-recycled) paper.
Additionally, unacceptable deformation, or necking, due to elongation of the cleaning fabric can occur as the cloth advances during a wash program.

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
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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032]In this example, a blend of polyester bicomponent sheath / core fibers and polyester monocomponent fibers was formed into a spunlaced thermally bonded fabric.

[0033]The bicomponent fibers constituted 1.7 dtex 38 mm cut length 15% co-PET / 85% PET supplied by ADVANSA, Germany. The bicomponent fibers comprised a sheath formed from a low-melting isophthalate copolymer of poly(ethylene terephthalate) having a melting point of about 110C and a core formed from poly(ethylene terephthalate) having a melting point of about 256° C. The polyester monocomponent fibers (1.7 dtex, 38 mm cut length 100% PET, supplied by ADVANSA, Germany) were formed from poly(ethylene terephthalate) and had a melting point of about 256° C. and were blended with the bicomponent fibers to form a fiber blend comprising 15 weight percent of the bicomponent fibers and 85 weight percent of the monocomponent fibers. The total amount of binder fiber as a percentage of the total fabric weight was about 3.6%. The amounts ...

example 2

[0035]This example was prepared the same way as for Example 1, except that about 7.9% of binder fiber was used and each card processed a blend of bicomponent and monocomponent fibers. The amounts of polyester base fibers and wood pulp are provided in Table 1

example 3

[0036]This example was prepared the same way as for Example 1, except that about 13.1% binder fiber was used in that the bicomponent fibers comprised 1.7 dtex 38 mm cut length 26% co-PET / 74% PET, supplied by ADVANSA, Germany. Each card processed a blend of bicomponent and monocomponent fibers. The amounts of polyester base fibers and wood pulp are provided in Table 1.

TABLE 1Nonwoven Fabric PropertiesPropertyComp Ex AExample 1Example 2Example 3Basis Weight of Fabric70.9070.9171.8772.03(g / m2)% Woodpulp50.6048.6247.4049.47% PET49.4047.7844.7137.39% Binder Fiber03.607.8913.14Thickness (mm)0.400.410.400.40MD Grab Breaking181197188191Strength (N)MD Grab Modulus16272836(MPa)MD Grab Load at 5%50777892elongation (N)MD Grab Load at 10%85123117133elongation (N)MD Grab Load at 15%121166156174elongation (N)XD Grab Breaking90938992Strength (N)XD Grab Modulus2.02.21.92.7(MPa)XD Grab Load at 5%10111419elongation (N)XD Grab Load at 10%13151825elongation (N)XD Grab Load at 15%16202331elongation (N)Fa...

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Abstract

A nonwoven fabric having high tensile modulus suitable for cleaning printer cylinders is formed by hydroentangling a fibrous nonwoven web formed from higher-melting polyester fibers, lower-melting binder fibers and woodpulp fibers and then thermally bonding the fabric.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to nonwoven fabrics for cleaning cylinders of machinery, such as printing machine cylinders.[0003]2. Description of the Related Art[0004]It is known in the art to use nonwoven fabrics to clean the cylinders of printing machines. U.S. Pat. No. 5,974,976 to Gasparrini et al. describes nonwoven cleaning fabrics having reduced air content and the use of such fabrics to clean the cylinders of a printing press. U.S. Patent Application Publication No. 2002 / 0187307 to Tanaka et al. describes wet-laid sheets for cleaning printer cylinders. The wet-laid sheets contain between about 5 and 50 weight percent binder fibers and are hydroentangled and creped, followed by heating to fuse the binder fibers after creping. Examples of wet-laid sheets include sheets containing at least 50 percent pulp.[0005]In an effort to reduce costs and to reduce the impact printed materials have on the environment; recycled...

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
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Application Information

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IPC IPC(8): D04H13/00
CPCB41F35/00B41F35/006D04H13/007D04H13/005D04H1/48D04H1/485D04H1/49D04H1/54Y10T442/60
Inventor SALAMERO, JAIME MARCO VARABENIM, THOMAS EDWARDRODRIGUEZ, JOSE-MARIA
Owner EI DU PONT DE NEMOURS & CO
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