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

Wet use chopped strand glass as reinforcement in extruded products

A technology of chopped strands and products, applied in covering/lining, construction, building structure, etc., can solve the problem of less inorganic filler, and achieve the effect of improving wind resistance and improving operability

Inactive Publication Date: 2007-11-07
OWENS CORNING FIBERGLAS TECH INC
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional PVC siding products are limited to containing these fillers due to impact resistance (required by ASTM D3679) and processing conditions, and as a result typically contain less inorganic fillers

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
  • Wet use chopped strand glass as reinforcement in extruded products
  • Wet use chopped strand glass as reinforcement in extruded products
  • Wet use chopped strand glass as reinforcement in extruded products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] PVC hard extrusion compound was metered into the feed throat of a 130 mm twin screw extruder at a rate of 2200 lb / hr. Simultaneously, WUCS glass fibers with 12% moisture were metered into the feed throat of the extruder at a rate of 33 lb / hr through a side mounted vibratory feeder to achieve a glass composition of 5% by weight. A low pressure zone located below approximately 60% of the extruder barrel length is used to remove moisture from the glass filling compound. The extruder was equipped with a sheet die for producing a 48 mil thick product. This product is produced on an extrusion line such as that shown in Figure 6. The product has been tested to meet the requirements of ASTM D3679.

Embodiment 2

[0068] Polypropylene mixed with 2% maleic anhydride modified polypropylene was fed into the feed throat of a single screw 60 mm extruder. Approximately 16 inches downstream, wet-use chopped strand glass fibers are introduced into the high volume zone (eg, first low pressure zone) through the feedthroat. About 16 inches further downstream from the barrel is a second low pressure zone equipped with a vacuum system set at 15 inches of mercury vacuum to remove moisture from the compound in the extruder. The extruder was equipped with a sheet die to extrude a 125 mil thick product.

Embodiment 3

[0070] A compound consisting of polyvinyl chloride (PVC) resin, impact and processing modifiers, tin-based stabilizers, blowing agents, and inorganic fillers such as calcium carbonate is pre-blended with 15% WUCS glass fibers containing 12% The moisture is then input into the feeding throat of the 88mm twin-screw extruder. The foamed extrudates were made into boards.

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
diameteraaaaaaaaaa
Login to View More

Abstract

A board suitable for installation on the side of a building has a front surface suitable for exposure to the weather, a rear surface, an upper end and a lower end, wherein the board has a stacking foot at either the upper end or lower end of the board, and has a stacking notch at the other of the upper end or lower end, with the stacking notch and the stacking foot enabling two of the boards to be stacked together with the stacking foot of each of the boards nested in the stacking notch of the other board, thereby providing stability for the stacked boards.

Description

field of invention [0001] The present invention relates generally to the preparation of thermoplastic composites, and more particularly to the use of wet use chopped strand glass (WUCS) in extrusion processes. Background technique [0002] Generally, glass fibers are prepared by drawing molten glass into filaments through a bushing or orifice plate. Typically, a sizing comprising a lubricant, a coupling agent, and a film-forming binder resin is then added to the drawn filaments. The aqueous sizing provides protection to the fibers from abrasion of the filaments against each other and promotes compatibility between the glass fibers and any matrix to which the glass fibers are added as reinforcement. After the sizing has been added, the fibers can be gathered into one or more tows and wound into a package, or they can also be chopped (usually while moistening) and collected. The collected chopped strands can then be dried and cured to form dry-use chopped glass strands (DUCS...

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): B29C47/10B29C47/76B29C48/07B29C48/12B29C48/395B29C48/76
CPCB29C47/0019B29C47/003E04F13/083B29K2105/12B29C47/767B29K2105/06B29C47/1045B29C47/0004E04F13/0864B29C48/022B29C48/07B29C48/12B29C48/2886B29C48/767
Inventor F·C·奥布赖恩-伯尼尼D·R·弗米利恩S·W·施韦格尔B·J·古赫德W·D·格雷厄姆G·A·沃尔拉思L·A·莫里斯
Owner OWENS CORNING FIBERGLAS TECH INC