Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Apparatus for tow opening

A device, technology of tow, applied in the field of equipment for unraveling tow, capable of solving problems such as having to be replaced periodically, differences in tow, and rubber rollers susceptible to wear

Inactive Publication Date: 2008-02-27
ACETATE INT LLC
View PDF4 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] These rubber rollers are subject to wear, causing variance in the unwound tow and must be replaced periodically

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
  • Apparatus for tow opening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] A multifilament tow as used herein refers to any tow having a total denier of less than 200,000, especially 100,000 or less. The fiber tow may comprise any synthetic polymer tow such as, for example, polyolefins (e.g., polyethylene, polypropylene), polyesters (e.g., PET, PBT), cellulosics (e.g., rayon, cellulose esters (e.g., cellulose acetate), ) cellulose ether), preferably cellulose acetate tow.

[0016] Referring now to the drawings, in which like reference numerals indicate like elements, there is shown in Figure 1 a tow unwinding device 1 . Device 1 comprises belt nozzle 20, a pair of tension rollers 30,35, a pair of first unraveling rollers (delivery rollers) 45,50, a pair of second unraveling rollers (proportional rollers) 75,80, the second belt nozzle 60 And optional applicator 65.

[0017] The tow 15 is drawn from the bale 10 by the first pair of unwinding rollers 45 , 50 via the belt nozzle 20 and the tension rollers 30 , 35 . The tow is then fed from the ...

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
elongationaaaaaaaaaa
tensile strengthaaaaaaaaaa
elongationaaaaaaaaaa
Login to View More

Abstract

An apparatus for opening a crimped multifilament tow comprising: a source of crimped multifilament tow; at least one pair of opposed gripping rollers comprising a first roller which is a metal roller and a second roller which is a smooth-surfaced roller made of a material selected from the group consisting of: polyurethane or silicone rubber; where the multifilament tow passes between and in contact with both of the rollers and filaments of the tow are separated from one another and opened.

Description

Background of the invention [0001] This application relates to apparatus and methods for unwinding fiber tows having a total denier of less than 200,000, such tows being any synthetic polymeric tows such as polyolefins, polyesters and cellulosics. Disentangled fiber tow is commonly used in the manufacture of cigarette filters and absorbent cores. [0002] Fiber tow is supplied in highly compacted bales. For use, the tow must be unwound, that is, the fiber surface is exposed to the greatest extent possible. Untangling the tow involves separating the individual filaments from one another. [0003] Figure 4 illustrates a conventional tow unwinding apparatus. First, the tow band 15 is pulled from the bale 10 by the roller pairs 5, 6 and 7, 8 through the blow spreader or band nozzle 20, which is used to straighten the band, eliminate Any twisting, and to achieve preliminary filament separation. Next, this nascent strip 25 , still containing completely unseparated filaments, is...

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
Patent Type & Authority Applications(China)
IPC IPC(8): D01G37/00D01G99/00
CPCD04H1/74D04H3/02D01G7/00D02J1/18D01B1/24
Inventor 约瑟夫·D·小高姆柏士
Owner ACETATE INT LLC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com