JPS61152850A - Fire retardant pile knitted fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flame-retardant pile acid knitted fabric suitable for fabrics such as upholstery for chairs.

(Prior Art) In recent years, there has been an increasing demand for flame retardant textile products. However, pile woven and knitted fabrics used for upholstery etc. have a higher air content than ordinary single woven and knitted fabrics.
It is considered difficult to make it flame retardant. As a method of imparting flame retardancy to pile woven and knitted fabrics, there are also methods of using flame-retardant fibers such as polyfural fibers and modacrylic fibers in the pile part. Problems such as curing have occurred, and is there a flame retardant used in the back coating for pile woven and knitted fabrics? The mixed method (the flame retardant effect extends to the pile) was unsuitable for aircraft applications with high flame retardant requirements. That is, there is currently no pile woven or knitted fabric that is satisfactory in both flame retardancy and dimensional stability even after washing.

(Problems to be Solved by the Invention) An object of the present invention is to obtain a flame-retardant pile woven or knitted fabric whose flame-retardant performance does not deteriorate even after washing, and which exhibits little change in dimensions or texture.

(Means for Solving the Problems) The present invention provides two sheets in which a flame-retardant polyester fiber yarn is arranged at least in the pile portion, and a yarn containing at least 80% by weight of polyester fibers in the base fabric portion. , and is a flame-retardant pile woven or knitted fabric whose base fabric portion is back-coated with resin.

In the second aspect of the present invention, the flame-retardant polyester fiber yarn preferably has an LOI value of 26 to 85, more preferably h
, ao~85. If the LOI value is less than 26, sufficient flame retardant performance cannot be obtained, and the LOI value is less than 26.
If the value exceeds 85, the cost will be high and it will be impractical. As a method for obtaining the above-mentioned flame-retardant polyester fiber yarn, for example, a method of mixing or copolymerizing a compound containing a phosphorus element or a halogen element at the stage of manufacturing the raw polyester fiber, or a method of mixing or copolymerizing a compound containing a phosphorus element or a halogen element after fiber formation. There is a method of exhausting the flame retardant (compounds contained) by heat treatment, but the former method is preferable from the viewpoint of washing durability.

Polyester fiber yarn includes filament yarn, crimped yarn,
It may be a spun yarn, a composite yarn, or the like, and is selected depending on the appearance, texture, and performance of the final product. The flame-retardant polyester is disposed at least in the pile portion, and a thread containing at least 80% by weight of the basic button polyester fiber is disposed. Preferably 65
Heavy f5is or higher. Most preferred is 100% by weight
It is. The polyester fiber may be a flame-retardant polyester fiber having an LOI value of 26 to 85, or may be a normal polyester fiber. Polyester fiber is a
If it is less than o'xt%, sufficient flame retardancy cannot be obtained, and shrinkage during washing exceeds 1%, making it impossible to obtain a product with dimensional stability.

Fibers other than polyester fibers may include natural fibers such as cotton and rayon, recycled fibers, and synthetic fibers such as nylon and acrylic. It can be determined as appropriate depending on the intended final product.

Pile woven and knitted fabrics refer to those with raised 2-pile and loop pile textures, such as moquette, velpet, velveteen, double raschel, tricot knitted fabric, and sinker pile. A back coating made of resin is applied to the base fabric portion, and thermoplastic polyurethane resin is preferably used as the back coating agent from the viewpoints of wash resistance 2 and flame retardance. Depending on the degree of flame retardancy required, if combustible fibers such as cotton or rayon are used in the base fabric, flame retardants such as phosphorus elements and halogen elements may be used as appropriate in the polyurethane resin. good. The amount of the back coating agent is appropriately selected taking into consideration the Ni of the polyurethane resin, the texture of the product, prevention of pile formation, etc., but the appropriate weight after drying is 50 to 200 f/go. The basis weight, pile thickness 2, and pile length of the base fabric portion may be within normal ranges, and are appropriately determined depending on the intended final product.

(Example) The present invention will be explained below with reference to Examples, but the present invention #4 is not limited to the Examples.

Example I.

The pile yarn is a yarn dyed using a conventional method of spun yarn 2OS/2 made of polyester fiber with an LOI value of 30, and the warp yarn P and weft yarn of the base fabric have an LOI value of 30.
Spun from polyester fiber Φ yarn 8O8/2 yarn dyed by a conventional method, pile carpet 2 with a basis weight of 700 f/ra'' and a pile length of 8.5H
After weaving, splitting, and shirring, thermoplastic polyurethane resin K18 is applied to the base fabric of the pile fabric.
0 y/rrr back;-ting and curing heat treatment to obtain a pile fabric.

Example 2 Two 150 denier 48 filament crimped polyester fiber yarns with an LOI value of 81 were twisted 8210 times/sw and dyed by a conventional method using pile yarn. A pile fabric with a fabric weight of 500 t/yy/ and a pile length of 2.0 m was woven by arranging polyurethane/rayon blended yarn (mix ratio 65:85) 808/2 in the warp yarn 2 and weft yarn of the cloth part, and then splitting and shirring the fabric. After that, the base fabric was mixed with thermoplastic polyurethane resin and 15 parts of phosphorus-based female combustion agent.'t 220 ty...? Back coating was performed to obtain a pile fabric.

Comparative example A modacrylic spun yarn 80 yarn dyed by a conventional method was used as a pile yarn, and rayon spun yarn BO8/2 was used as the warp yarn 2 and weft yarn of the base fabric, and the fabric weight was 6201/d. ,
Pile fabric with pile length of 8.5■ff-woven, hair split,
After shirring, apply acrylic/PVC resin K 250 P/R? to the base fabric. Back coating was performed to obtain a pile fabric.

Example 1. Table 1 shows the results of examining the flame retardant performance, shrinkage rate 2, and texture after washing for the pile fabrics obtained in Example 22 and Comparative Example.

Table 1 As is clear from Table 1, Examples 1P and 2 according to the present invention have a small shrinkage rate in the vertical direction and have an excellent texture after washing, whereas the comparative examples have a low shrinkage rate in the vertical direction. The shrinkage rate in the grain direction was large, and the texture after washing was also poor. 2. Flame retardant performance, yield rate 2 and texture after washing were measured as follows.

Flame retardant performance: FAR25-Jss (b) sickle F-nior vertical E test (US Federal Aviation Administration standard) Sample size = 21 (width) x 12' (length) Support angle of test specimen: Vertical Heat source: Inner diameter 8781 Bunsen or Tyril burner flame height 11/2' Flame contact time: 12 seconds Judgment: Average carbonization length ≦ 8' (20 Fahrenheit) Average afterflame time ≦ 15 seconds Burning time after dropping material 58 seconds Shrinkage rate : Texture after washing by JISL-1042F-2 method: Based on sensory test by 10 panelists ◎...Very good △...Very poor LOI value: D1201-1978 Section 7 (Effects of the Invention) The pile woven and knitted fabric of the present invention has no change in flame retardant performance even after washing and is particularly suitable for use as a chair upholstery, with little dimensional change ν and small change in texture.

Claims (1)

[Scope of Claims] A flame-retardant polyester fiber yarn is arranged at least in the pile part, a thread containing at least 30% by weight of polyester fiber is arranged in the base fabric part, and the base fabric part is backed by a resin. A flame-retardant pile woven or knitted fabric characterized by being coated.