Polytetrafluoroethylene fiber self-lubricating sealing strip suitable for sealing doors and windows of carriage

A technology of polytetrafluoroethylene and sealing strips, which is applied in sealing devices, textiles, papermaking, knitting, etc., to achieve the effects of enhanced bonding strength, low friction coefficient, and improved production efficiency

Inactive Publication Date: 2012-01-25
INSPECTION & QUARANTINE TECH CENT OF GUANGDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polytetrafluoroethylene fibers are mostly used to prepare filter materials, and the technology of using polytetrafluoroethylene fibers as sealing strip suede materials has not yet been found.

Method used

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  • Polytetrafluoroethylene fiber self-lubricating sealing strip suitable for sealing doors and windows of carriage
  • Polytetrafluoroethylene fiber self-lubricating sealing strip suitable for sealing doors and windows of carriage
  • Polytetrafluoroethylene fiber self-lubricating sealing strip suitable for sealing doors and windows of carriage

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Embodiment Construction

[0034] figure 1 Shown is that the polytetrafluoroethylene fiber self-lubricating sealing strip is an embodiment of the present invention, which is composed of a base layer that plays a fixing role and a fleece layer on the upper surface of the base layer. The base layer is a braided fabric made of polyester filaments 200d / 24f, and the velvet layer is a velvet formed by knitting polytetrafluoroethylene (PTFE) filaments 400d / 60f on the base layer braided fabric through a double-layer warp raising knitting method. The friction coefficient of the polytetrafluoroethylene fiber self-lubricating sealing strip: 0.16-0.20; operating temperature: -60°C-200°C; speed: ≤5m / s; pressure: ≤200Pa.

[0035] The self-lubricating sealing strip of this embodiment adopts the double rapier loom in the double-layer loom to weave the double-layer warp raising weaving method, that is, two system warp yarns (ground warp and pile warp) are used, and the same system weft yarn is interwoven made. When w...

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Abstract

The invention discloses a polytetrafluoroethylene fiber self-lubricating sealing strip. The sealing strip comprises a base layer for fixing and a wool layer which is on the upper surface of the base layer and has a rubbing effect, wherein the base layer and the wool layer are formed by weaving double layers in a wool weaving mode; upper layer ground warp yarns and upper layer weft yarns are woven into an upper layer fabric; lower layer ground warp yarns and lower layer weft yarns are woven into a lower layer fabric; pile warp yarns are alternately woven on weft yarns of the upper and lower layer fabrics and sandwiched among the upper or lower layer ground warp yarns; at least one ground warp yarn is arranged between two adjacent pile warp yarns at intervals; the upper layer fabric and the lower layer fabric are connected with each other through the ground warp yarn and are a certain distance away from each other; the middle part of a pile warp which connects the upper layer fabric with the lower layer fabric is cut by a pile wool cutting process so as to obtain two independent pile wool fabrics with vertical wools, namely, two sealing strips; and the pile warp yarns are polytetrafluoroethylene fibers. The self-lubricating sealing strip has the characteristics of low friction coefficient, long wearing life and high sealing performance.

Description

technical field [0001] The invention relates to a sealing strip, in particular to a polytetrafluoroethylene fiber self-lubricating sealing strip suitable for sealing doors and windows of carriages. Background technique [0002] At present, the car body has a very important seal, that is, a sealing strip made of synthetic rubber, also known as a protective molding insert, which is mainly modified by polyethylene (PVC), ethylene propylene rubber (EPDM), and synthetic rubber. Polypropylene (PP-EPDM) and other materials are made by extrusion molding or injection molding, and are applied to door frames, side windows, front and rear windshields, engine covers and trunk covers to play a sealing role. It also acts as a shock absorber. [0003] The door frame seal of the compartment door mainly refers to the seal of the door frame and the first seal of the door. The door frame sealing strip must not only ensure airtightness, but also bear the impact force when closing the door. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E06B7/22B32B27/02D04B21/04
Inventor 任忠海叶湖水张卓
Owner INSPECTION & QUARANTINE TECH CENT OF GUANGDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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