JPS6392769A - Tufted pile cloth - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a tufted pile fabric used for carpets such as car vents and cloaks.

[Conventional technology]

During tufting, the pile yarns of tufted pile fabrics are subjected to impactively stronger insertion drag than the primary base fabric, so spun yarns made by heating and binding short fibers (slivers) or filament yarns with endless fibers are used as pile yarns. Recently, attempts have been made to use bundled spun yarn, which is made by binding short fibers (slivers) with thin filament yarns without burning them, as pile yarn (Special Publication No. 55-17).
145, JP 57-48652, JP 56-144
240, Japanese Unexamined Patent Publication No. 58-91861, Japanese Unexamined Patent Publication No. 58-75
780).

[Problem that the invention seeks to solve]

All of the pile yarns that have been used or tried in the past are made up of a large number of fibers that are aligned, and in the pile that is made of these, each fiber is separated individually and becomes bulky, giving it a pleasant texture. Falling down due to stepping on something
It gradually loses its cushioning properties. Especially in rugs used in kitchens, bathrooms, etc., the pile is kept in a wet state, so it tends to slip easily, so bulky fiber webs or resin foams (so-called sponges) are used to supplement the cushioning properties. Used as an insert or lining on the back of the rug.

However, since these cushioning materials such as webs and sponges are flat and not individually independent like piles, they cannot complement the cushioning properties peculiar to piles.

Therefore, we thought of cutting cushioning materials such as fiber webs and sponges into thin pieces and using them as pile threads to form piles that do not easily sag.However, the threads that make up these cushioning materials have excellent elastic recovery power. It has poor tensile strength and cannot be tufted at all.

Therefore, the inventor further devised the idea of surrounding the elastic threads constituting the cushioning material with short 11A fiber slivers, wrapping the long fiber filament threads around them, reinforcing the bundle, and performing tufting. An application for utility model registration was filed with the No.

[Purpose of the invention]

The present invention further improves the invention of the inventor's previous application, and improves the cushioning properties of the pile while reinforcing the elastic threads.
To efficiently and economically provide a tufted pile fabric which can be tufted without causing yarn breakage of pile yarns and has excellent elastic recovery power.

[Structure of the invention]

That is, the tufted pile fabric according to the present invention has a porosity of 50
% or more, the fiber length is 7 of
The total cross-sectional area of one or more aligned fiber groups is elastic yarn 1
Fiber threads 12 having a tensile strength of 1000 g or more between arbitrary lengths of 50 and 1000 g are attached, and the cross-sectional area of these elastic threads 11 and fiber threads 12 are 1/2 or less of the cross-sectional area of 1. A thin filament yarn 13 having a cross-sectional area of 1/10 or less of the cross-sectional area of the fiber yarn 12 is wrapped and bundled with a number of twists of 2 or more times per 70 fl to form a pile yarn 14, and then wrapped into a drawn polyolefin tape yarn 15. Woven primary base fabric ■6
The pile 21 is formed by tufting.

The elastic thread 11 is made of a fiber web used as a cushion backing material for a rug or a foam (sponge) made of polyethylene, polypropylene, etc. with a cross-sectional area of 4 to 100 mm in the form of a tape or string. However, in addition to these conventional cushion backing materials, slivers with an apparent outside diameter of 2 to 10 mm are drafted in the spinning process, and fiber webs are entangled by needling. It is also used that is made by cutting the original needle punched felt into tape shapes.

In the case of the elastic threads 11 that will become fibers in this way, it is best to apply a binder by spraying or other methods to lightly bond the fibers, and in the case of elastic threads that will become plastic foam, the foam holes It is advisable to use plastic foam with a single-cell structure that is not continuous and therefore has no air permeability.

Here, "porosity" refers to the porosity when the elastic thread 11 becomes a fiber web, sliver, or needle-punched felt when the curved elastic thread bound by filament thread is left in a natural state. The volume ratio of air or voids other than the fiber polymer substance to the volume (bulk) of the entire elastic thread, and if the elastic thread 11 is made of polyethylene foam, polypropylene foam, or other plastic foam, the elastic thread. It refers to the volume ratio of air or bubble voids to the volume of the entire thread, and it is preferable to use an elastic thread 11 with a porosity of 80% or more, and the elastic thread 11 should have a high porosity in this way. The tensile strength is 500
Even if gM1jf& or less, the object of the present invention can be achieved.

Since the fiber yarn 12 has a fiber length of 70n or more and the fibers 18 are aligned, the fiber length is 70u or more and the spun sliver is untwisted or naturally twisted as it goes through the spinning process, and the fiber length is infinite. A long filament thread is applied,
The tensile strength of a spun sliver is measured by pinching both ends of a 50 m long section.

When the fiber yarn 12 is attached to the elastic yarn 11, a slight amount of twisting may be applied, but the number of twists in this case should be as small as possible, generally no more than one twist per length IG.

The thickness of the filament yarn 13 that binds the elastic yarn 11 with the fiber yarn 12 is generally 100 deniers or less, and preferably low-temperature heat-sealable or low-temperature heat-shrinkable synthetic fiber filament is used, thereby tightening the fiber yarn 12. The resulting pile yarn may be heat-treated in the fusion temperature range or shrinkage temperature range of the synthetic fiber filament, and then tufted.

〔Effect of the invention〕

In the present invention, the fiber length of the fiber yarn 12 constituting the pile yarn 14 is 70 m or more, and the fiber length of the filament yarn 13 is 70 m or more.
Since the ONM is wound with two or more twists, each fiber 18 of the fiber yarn 12 is bound by the filament yarn 13 at least twice, that is, with an interval of 35i or less, and the elastic yarn 11 is Porosity is 50
% or more, the pile yarn 14 retains a high elasticity that tends to swell against the tightening force of the filament yarn 13, and therefore each fiber 18 of the fiber yarn I2 It is tightly fixed to the surface of the elastic thread 11, and it is tightly fixed to the surface of the elastic thread 11, and the short fibers (
When the pile yarn 14 is a non-filament, it does not shift or pull out even when subjected to tensile stress, and the tensile strength of 1000 g or more per 5 cm of the fiber yarn 12 remains unchanged.
The elastic yarn 11, which has a tensile strength of 1000 g or more and around 500 g, is also bundled with the filament yarn 13 and becomes dense, and the entire pile yarn becomes thinner, so it is not inserted into the base fabric. In particular, since the filament threads 13 are spirally wound around the swollen elastic threads 11 that expand and contract in the thickness direction, when the pile threads 14 are pulled, the tensile strength is increased. As the winding radius becomes smaller, the pile yarn 14 bites into the surfaces of the elastic yarn 11 and the fiber yarn 12 more strongly, so that they are tightly bundled, and thus the pile yarn 14 has a tensile strength of 3000 g or more.

In order to achieve the effect of the filament yarn 13 biting into the surfaces of the elastic yarn 11 and the fiber yarn 12, it is desirable that the thickness of the filament yarn 13 be 100 deniers or less, preferably 20 to 50 deniers.

According to the experimental results, the pile yarn 14 with a tensile strength of 1000 g or more does not break during the yarn feeding process from the cone or beam to the needle 19, and the pile yarn 14 with a tensile strength of 3000 g or more
The needle 19 is the primary base 416 for the pile yarn 14 of g or more.
Thread breakage does not occur due to the stabbing resistance received from the primary base fabric 16 during the tufting process or the tensile stress received between the looper 20 and the needle 19 when the needle 19 is pulled out from the primary base fabric 16. was confirmed, and
In the present invention, the slippery polyolefin tape yarn 15 of the pile yarn 14 is used as the primary base fabric 16, and the fibers 18 of the aligned fiber yarn 12 tend to be dispersed around the elastic yarn 11 and wrapped thinly. As a result, the frictional resistance on the surface of the elastic yarn 11 is reduced, so that the pile yarn insertion resistance received from the base fabric 16 during tufting is reduced.

Therefore, according to the present invention, even if the elastic yarn 11 has a tensile strength of 1000 g or less, it is possible to obtain the tufted pile fabric 17 by tufting without causing yarn breakage.

The elastic yarn t occupies more than half of the volume of the pile 21.
Since i is a cushioning material used as a backing material for a rug, the pile 21 that is made of it swells to a high volume and exhibits excellent cushioning properties, even when used in wet conditions in kitchens, bathrooms, etc. It will not happen that you fall down due to pressure.

In addition, the elastic yarn regains its fullness after tufting, and is therefore firmly stuck in the needle through hole of the base fabric created by the needle, so that the subsequent banking process (
This method simplifies the buffing process (back coating of adhesive), and this effect is particularly noticeable for elastic yarns made of completely elastic materials such as resin foams, especially polyurethane foams. Furthermore, a tufted pile fabric with excellent pile removal strength can be obtained. 'The tufted pile fabric 17 in which the elastic threads 11 are tufted is not known in the art, and the elastic threads 11 and the fiber threads 12 are aligned to form a heathered pattern.
In addition, the elastic yarn 11 that occupies most of the pile yarn is the fiber yarn 1.
According to the present invention, the tufted pile fabric 17, which is rich in cushioning properties and durability and has a novel design, can be economically and efficiently obtained. There is a large amount of industrial material.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the tufted pile fabric according to the present invention during the tufting process, and FIG. 2 is an enlarged perspective side view of the pile yarns constituting the tufted pile fabric according to the present invention. 11... Elastic yarn, 12... Fiber yarn, 13... Filament yarn, 14... Pile yarn, 15... Tape yarn, 16...-Next base fabric, 17...・Tufted pile fabric, 18... Fiber, 19... Needle, 20... Looper, 21.
··pile.

Claims (1)

[Claims] The bulky elastic thread 11 with a porosity of 50% or more is made of a group of aligned fibers with a fiber length of 70 mm or more, with a total cross-sectional area of 1/2 or less of the cross-sectional area of the elastic thread 11 and an arbitrary length. length 50m
The elastic yarn 11 and the fiber yarn 12 are made into thin filaments whose cross-sectional area is 1/10 or less of the cross-sectional area of the fiber yarn 12. The yarn 13 is wrapped and tied with a twist number of 2 or more times per 70 mm to form a pile yarn 14, and then tufted onto a primary base fabric 16 woven into a stretched polyolefin tape yarn 15 to form a pile 21. Tufted pile fabric 17, which is characterized by the following.