Preparation method of polyester cord fabric with low denier and high modulus

Patent metadata

Field	Value
Publication number	US-10731276-B2
Application number	US-201515519539-A
Country	US
Kind code	B2
Filing date	Nov 19, 2015
Priority date	Nov 21, 2014
Publication date	Aug 4, 2020
Grant date	Aug 4, 2020

Abstract

The present invention discloses a preparation method of polyester cord fabric with low denier and high modulus, including steps of: spinning, reducing melt discharge volume for extruding yarn with denier of 500-1000 D; using high-speed motor and heat roller, spinning speed of 6000-6500 m/min to produce raw yarn; performing initial and repeat twisting of raw yarn by straight twisting machine; performing weaving of twisted yarn using Dornier air-jet loom to produce cord fabric, when weaving and reeding-in, using two into a reed way, adding creel roller bearing and creel single spindle tension control belt to improve uniformity; performing dipping of cord fabric using two-bath dipping, adjusting temperature to 250-260 degrees Celsius, tension to 0.3-2.9 daN/each yarn of key area, running speed of yarn to 55-70 m/min. The polyester cord fabric with low denier and high modulus can reduce rolling resistance and fuel consumption, and improve performance.

First claim

What is claimed is:

1. A method for preparing a polyester cord fabric, being characterized in that, includes the following steps of:
1) reducing melt discharge volume for extruding a yarn with denier of 500-1000 by using a motor to move a heat roller at speed of 6000˜6500 m/min to produce a raw yarn;
2) twisting the raw yarn by a straight twisting machine to produce a twisted yarn;
3) performing weaving of the twisted yarn by using an air-jet loom with a two-in-one entry method to produce a cord fabric; adding a creel roller bearing and a creel single spindle tension control belt for improving uniformity of the cord fabric;
4) performing dipping of the cord fabric by using a two-bath dipping method, adjusting temperature to 250-260 degrees Celsius, tension to 0.3 to 2.9 daN/each yarn, speed of the cord fabric to 55 to 70 m/min to produce the polyester cord fabric;
wherein the raw yarn has a modulus of 105 to 120 mN/dtex and a strength of 9.0 to 9.5 g/d.

2. The method according to claim 1 , being characterized in that, the cord fabric is dipped in ovens, tension zones and glue grooves in turn in the step 4).

3. The method according to claim 2 , being characterized in that, ovens contain six ovens with different temperature.

4. The method according to claim 3 , being characterized in that, tension zones include five tension zones.

5. The method according to claim 4 , being characterized in that, glue grooves contain an one-bath glue groove and a two-bath glue groove.

6. The method according to claim 5 , being characterized in that, the polyester cord fabric has a diameter range of 0.37 mm to 0.54 mm.

Assignees

• Oriental Ind Su Zhou Ltd
• Continental Reifen Deutschland Gmbh

Inventors

• Fan Datsai

Classifications

• D02G3/48

  Tyre cords {(tyre reinforcements B60C9/00; metal cords for reinforcing rubber or plastic articles D07B1/0606)} · CPC title

• D01F6/62 Primary

  from polyesters · CPC title

• B29C70/50

  for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] · CPC title

• B29D30/38 Primary

  Textile inserts, e.g. cord or canvas layers, for tyres (making woven fabrics D03D); Treatment of inserts prior to building the tyre (pretreatment of inserts B29B15/00; manufacture of layers comprising fibrous parallel reinforcements of substantial or continuous length B29C70/20) · CPC title

• D03D15/41 Primary

  with specific twist · CPC title