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

Sizing composition for glass fibers

A sizing composition, glass fiber technology, applied in fiber processing, glass manufacturing equipment, fabrics, etc., can solve the problem of reducing the quality of final fabric products

Inactive Publication Date: 2005-08-24
PPG IND OHIO INC
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, V-strands and / or Z-strands can reduce the quality of the final fabric product

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] In this example, an aqueous sizing composition was prepared by adding the starch to an agitated mixing or slurry tank previously charged with about 300 gallons of demineralized water.

[0062] Cooking of the starch is carried out by pumping the starch mixture from the slurry tank through a jet cooker where steam is injected directly into the starch mixture. The rate of steam addition was controlled to provide a cook temperature of about 126.5°C (±2.2°C), and the outlet back pressure was controlled at about 27 psig (±7 psig). The residence or residence time of the starch mixture at the cooking temperature is about 11 seconds to cook the mixture, and the outlet temperature is not higher than 85°C.

[0063] The starch mixture was then added to the main mix tank preset to 85.5°C. The slurry tank was washed with about 80 gallons of demineralized water to completely remove the raw starch from the slurry tank while flushing any residual starch from the jet cooker. Thi...

Embodiment 2

[0073] G-75 glass fibers sized with the compositions of the present invention can exhibit improved performance in air-jet weft insertion looms compared to G-75 glass fibers sized with prior art sizing compositions. For example, G-75 glass fibers sized with the composition in Example 1 require less than 4 bar when the ZAX-e air-jet weft insertion loom (Tsudakoma Corporation, Japan) is running at a speed of 1000 picks per minute. Loom main nozzle air pressure. Under similar conditions, G-75 glass fibers sized with the size disclosed in the examples of US Pat. No. 5,393,335 required a main nozzle air pressure of about 6 bar. Thus, the use of glass fibers sized with the composition of the present invention can reduce the required main nozzle air pressure of an air-jet weft pick loom by 20 to 30% (ie, increase fly).

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
diameteraaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

An aqueous sizing comprising a starch mixture comprising a high viscosity starch and a low viscosity starch cooked at a temperature sufficient to solubilize at least 50% of the high viscosity starch and to solubilize at least 50% of the low viscosity starch. Glass fiber strands formed from glass fibers at least partially coated with the sizing composition of the present invention can exhibit good fliability and insertion time properties when used in an air jet loom.

Description

field of invention [0001] This invention relates to sizing compositions for glass fibers. Background technique [0002] After the glass fibers are formed, they are generally treated with a sizing composition that imparts the desired properties. As used herein, the terms "glue," "sized," and "size" refer to a coating composition that is applied to the glass fibers after they are formed. After the sized glass fibers are formed and processed, they can be assembled into fiber bundles or strands comprising a plurality of individual fibers. The fiber strands may be wound into coils or "forming packages". The formed package can be dried to remove moisture from the fibers. For some uses, the fibers are typically wound onto spools by conventional textile twisting techniques, such as twisters. [0003] The sizing composition can serve several functions. It acts as a lubricant and binder, and protects the fibers from abrasion against each other. [0004] The sizing composition al...

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): C03B37/10C03C25/26D02G3/00D03D15/02D06M15/11H05K1/03
CPCH05K1/0366C03C25/321Y10T428/2933
Inventor 王伯琦
Owner PPG IND OHIO INC