JPS5930937A - Pile sheet cloth - 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 The present invention relates to pile sheet fabrics such as velveteen, moquette, and pile knit used for seats and chairs in automobiles, airplanes, trains, etc.

be done.

This backing finish prevents the base fabric from expanding and contracting during use, and prevents the pile from falling off from the base fabric, which is subjected to repeated expansion and relaxation. It does not require the application of a large amount of backing glue as is the case with tufted carpet backing for the purpose of tufted carpets, and the backing is light enough to prevent movement between the fibers that make up the warp and weft of the ground structure. On the other hand, applying a large amount of backing agent to the extent that the pile and ground texture are bonded may impair the flexibility (drapeability) required for the sheet fabric applied on top of the cushion pad. It's not appropriate because it's Kp.

Even if the amount of backing agent applied is small and the backing finish is light, it takes a certain amount of time and heating energy to uniformly apply the backing agent and dry and harden it. The finishing process cannot be ignored when considering the production cost of pile sheet fabric.

In particular, in order to allow a small amount of the solid content of the backing glue to penetrate uniformly and sufficiently into the fabric without impairing drapability, it is necessary to dilute the backing glue by adding a large amount of water.
A large amount of thermal energy is required to dry the backing paste that has been diluted in this way and penetrated into the interior of the fabric yarn, and therefore the processing speed for finishing the backing has to be slowed down.

Therefore, the present invention simplifies the backing finishing process by using low-melting-point mWJ plastic synthetic fibers for the base structure and passing the pile sheet fabric through a heating zone to melt and fix it to the base structure.
In order to solve this problem, the base structure of the pile sheet fabric that stands up entangled with the weave is made of two types: a thermoplastic synthetic fiber with a low melting point and another fiber whose melting point is 50°C or more higher than that of the fiber. The fiber is preferably composed of a spun yarn containing a mixture of two types of thermoplastic synthetic fibers having a part or all of the same fiber composition and having melting points different by 50°C or more. It is.

Here, "the base structure is composed of a spun yarn that mixes these two types of fibers with different melting points" means that part or all of the base structure is composed of the spun yarn. death,
It does not necessarily mean that the entire ground texture must be composed of the spun yarn, and therefore, when the pile sheet fabric is moquette, the joint warp and/or the ground weft are the I1
This means that it is composed of three threads.

However, this does not negate the fact that it is preferable for the entire ground structure to be composed of the spun yarn.

Melting point is over 50℃#! Spun yarns that are a mixture of two types of *fibers include synthetic pJ1. It can be obtained by blending fibers with other types of synthetic fibers, or by blending synthetic fibers with cellulose fibers. In a preferred embodiment of the present invention, a spun yarn consisting of two types of thermoplastic synthetic fibers having a part or all of the same fiber composition and different melting points of 50°C or more is a polyvinyl chloride fiber and a vinyl chloride fiber. Two types of thermoplastic synthetic fibers with the same composition, such as ethylene/vinyl acetate ternary copolymer fiber, or two types of thermoplastic synthetic fibers with different degrees of polymerization even though they have a four-component composition. It is obtained by blending materials with different melting temperatures.

The difference in melting temperature between the two types of fibers constituting the spun yarn used in the present invention is 50°C or more, preferably 100°C or more.

More preferably, sheet fabrics, including pile sheet fabrics, generally require high physical properties such as tensile strength and tear strength, so regular polyester fibers with a melting point of about 260°C and melting points of about 130°C are preferred. It is blended with low melting point polyester fiber Gin and used for the base fabric.

In this case, the blending ratio is 50% or more, preferably around 70%, of high melting point fibers such as nylon, rayon, cotton, or haloregular polyester fibers, polypropylene fibers,
Low-melting point fibers such as polyethylene fibers and low-melting point polyester fibers should be less than 50%, preferably around 30%, for spinning or dyeing purposes, or for other purposes to ensure flame retardancy. The blending ratio of the fibers is not particularly limited to 30% or less, but it is assumed that the fibers are H1 fibers, which have a higher melting point than the low melting point thermoplastic synthetic fiber used for the base structure, and are preferably H1 fibers. Fibers with the same composition as the low-melting point fibers in the ground structure are stiffened into a pile.

According to the present invention, (1) the pile sheet fabric after knitting and weaving is passed through a reinforcement zone whose temperature is above the melting point of the low melting point synthetic fibers and below the melting point of the high melting point fibers in the ground structure; The melting point synthetic fiber melts and fuses to the high melting point fiber, preventing the shifting movement between the high melting point fibers, resulting in a stiff texture similar to when a backing agent is applied, resulting in dimensional stability and shape stability. A pile sheet fabric with the required physical properties such as properties and strength can be obtained.

(2) #I (temperature) control of this heating zone is easy to manage because the difference in melting temperature of the two fibers that form the ground texture is as large as 50°C or more, and processing losses are drastically reduced.

(3) The base fabric is originally knitted and woven at high density as a sheet fabric, and the low melting point synthetic fibers that are fused and act as adhesives (backing agents) and other high melting point fibers are blended to form the base fabric. Since the fibers are finely intertwined and bonded together by the kneading that reaches the inside, the high melting point fibers are evenly bonded and set by the kneading that reaches the inside of the ground structure without applying any special tension or suppressive external force due to heating. .

(4) Low melting point synthetic fibers lose their orientation when heated and melted, while the other high melting point fibers do not melt and retain their initial high degree of orientation as drawn fibers; Even after this, the required physical properties of the ground structure are ensured.

(5) The above heat treatment after knitting and weaving does not evaporate the moisture in the backing agent, which has a high moisture content, unlike the heat treatment in the conventional long hitting finishing process, and does not require as much heat energy for the process. , thus speeding up post-processing.

(6) The low-melting point synthetic fibers used for the fabric are drawn and have intermolecular blendability, so they can withstand the tension during the weaving process and do not fall off, making it possible to make pile sheet fabrics. It does not reduce the weaving efficiency or the quality of the pile sheet frozen ground.

As described above, the pile sheet fabric according to the present invention can be obtained efficiently and efficiently by saving resources and heat energy in the cutting process.

(Example) 2 denier, cut length 51% regular polyester fiber and 4 denier cut length 51% polyester fiber with a melting point of 110°C are blended at a ratio of 70% of the former and 30% of the latter. Z-57 (IT/M, ply twisted S 40
0 'r//M, thickness 2 OS/2 spun yarn is used for the ground warp and ground weft, reed density 8.25 feathers/cmI driving density 16 times/hook to form the ground texture. A moquette with a pile length of 2+8% was woven by inserting two pile threads into the reed.

As a result of passing the conomocket through a dry heating zone at 150°C, the ground structure became firm and firm, similar to when the backing was applied, and a shape-stable moquette was obtained.

Agent: Patent attorney (8) 89) Shigeo Chito

Claims (1)

[Claims] A pile sheet fabric consisting of a base texture and a pile that stands up entangled with the base texture, characterized in that the base texture is a spun yarn containing a mixture of two types of fibers with melting points different by 50°C or more. .