Unlock instant, AI-driven research and patent intelligence for your innovation.

Refining process of yarn or sliver

A technology of yarn and sliver, which is applied in the field of refining machines, can solve the problems of small yarn or sliver opening, and achieve the effect of reducing the danger of accumulation

Inactive Publication Date: 2011-12-28
TEIJIN ARAMID BV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These openings are not suitable for leading the yarn or sliver to the refiner because the inlet is set on the wrong side of the refiner and also because these openings are less than 1mm and therefore too small to be used as openings for the yarn or sliver

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
  • Refining process of yarn or sliver
  • Refining process of yarn or sliver
  • Refining process of yarn or sliver

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063] This example describes four experiments. Four different raw materials were processed into slurries in these experiments. The different raw materials are dry and wet (never dried) yarn or sliver. The conditions and results of the purification according to the present invention are shown in Table 2. The result of this refining is different lengths of yarn or sliver suspended in water. In contrast to conventional refining processes, this yarn or sliver suspension has a further processing step in which the yarn or sliver suspension is fed to a refiner. The conditions and results of this procedure are shown in Table 3. The result of this process is a slurry comparable to commercial slurries. The experiments were performed in a laboratory scale refiner.

[0064] Measurements carried out on the size obtained showed that the quality of the size was improved by using never-dried yarn. The SR value and paper strength value are higher, which is important for the application ...

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
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a process for refining yarn or sliver having a length of at least 1 meter, the process comprising the steps of feeding the yarn or sliver and liquid into a refining machine comprising a Body of (7) and at least one refiner filler for the inlet (1) of yarn or sliver, and the slurry-like raw material thus obtained and its use in the manufacture of friction materials, paper and gaskets. In particular, the refiner has a refiner filler (8), wherein the yarn or sliver is fed through an inlet provided in the refiner filler. The invention also relates to a refiner filler comprising at least one, preferably eccentric, inlet for yarn or sliver. The inlet comprises an inlet hole comprising a ramp on the outflow side of the inlet for directing the yarn or sliver from the inlet hole to the surface of the refiner stuffer. The invention also relates to a refiner comprising such a refiner filler.

Description

technical field [0001] The invention relates to a process for refining yarn or sliver, to a refiner filler and to a refiner comprising said refiner filler. Background technique [0002] Slurries such as poly-p-phenylene terephthalamide (PPTA) pulp can be prepared by so-called refining, which involves chopping the fibers to obtain the desired fiber length and at the same time fibrillating the fibers to give them a rough or fluffy shape appearance. [0003] Refining fibers currently requires fiber pretreatment, wherein (semi)continuous fibers are pre-cut to obtain individual fiber segments with suitable shorter dimensions to be able to prepare liquid suspensions. Typically, the fibers come out of the fiber spinning process wet. Cutting wet (never-dried) fibers is not feasible due to the tendency of knives to break, so cutting pretreatment requires the fibers to be dry. This is disadvantageous not only for economical reasons but also because of the well known improvement of ...

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 Patents(China)
IPC IPC(8): D21D1/30B02C7/00
CPCD21D1/30D21D1/306B02C7/00
Inventor G·J·里特豪斯特V·A·范博梅尔J·W·D·威尔林E·M·温克勒S·J·博芬申
Owner TEIJIN ARAMID BV