JPH05287636A - Multilayered woven fabric - Google Patents

Abstract

PURPOSE:To provide an inexpensive multilayered woven fabric, excellent in voluminous feeling and water holding properties and useful for industrial materials at a low cost by sterically arranging core yarn between two woven fabrics. CONSTITUTION:The objective multilayered woven fabric has core yarn 7 arranged in the warp yarn direction between two woven fabrics 1 and 4 and is obtained by mutually connecting the woven fabrics with pile yarns 9 and 10 in the warp yarn direction. In this woven fabric, the relative positions of the pairing pile yarns 9 and 10 are alternated for each weaving thereof in the woven fabrics 1 and 4 at a prescribed distance. Core yarn 8 in the weft yarn direction arranged in the upper and lower parts of the core yarn 7 is woven with the pile yarns 9 and 10 at the alternated positions. When trimmed selvadge yarn is used as the core yarns 7 and 8, the multilayered woven fabric having a smooth surface and voluminous feeling is obtained. An expanded resin is filled therein and the resultant filled woven fabric is utilized as a TATAMI padding (a rush mat for Japanese domestic life) or the surface is coated with a resin coating and utilized as a board for inner walls or a roofing tile or a mat material for draining in a geodrain construction method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer woven fabric in which core yarns are three-dimensionally arranged between two woven fabrics.

[0002]

2. Description of the Related Art Conventionally, there has been known a multi-layer woven fabric produced by arranging core yarns in a plane and weaving two woven fabrics above and below the yarns and connecting them by pile yarns. A bulky yarn is disclosed in which bulky yarn is used as the core yarn, and after the weaving, a relaxing treatment is performed to sufficiently express the bulkiness between the upper and lower woven fabrics and enhance the heat retention (heat insulating property) (for example, (Kaisho 61-75841). As the bulky yarn, there is used a yarn such as false twisted yarn, indented yarn or composite fiber yarn of synthetic fiber, which is substantially non-twisted and exhibits a large bulkiness by the crimp expression treatment.

On the other hand, a large amount of selvage yarn is by-produced during the weaving process by the shuttleless loom. This selvage yarn has a structure in which the weft residual yarn is twisted with the entangled yarn of the catch cord so that it has many voids inside and is bulky and highly water-retentive. .. However, since it has a low tensile strength and its surface is rough, it cannot be used as a woven thread.In the past, most of it has been discarded as waste thread, and a way of effective utilization has been sought from the viewpoint of resource saving. Was there.

Therefore, the applicant of the present application has proposed in a previous application (Japanese Patent Application No. Hei 2-204081) a weaving method capable of obtaining a selvage yarn having a large tensile strength and having a structure as shown in FIG. , It has become possible to use the discarded selvage yarn as a woven yarn. In FIG. 6, 22 and 23 are entangled yarns constituting the catch cord, and 22 is 100
High tensile yarn made of 0 denier nylon filament,
No. 23 is a waste thread that has been conventionally used. 24 is a weft residual yarn which is entangled with the entangled yarns 22 and 23.

[0005]

A conventional multi-layer woven fabric is a multi-layer woven fabric in which bulky yarns are two-dimensionally arranged in the warp direction or the weft direction between two upper and lower woven fabrics and which has a sufficient sense of volume. Couldn't get In addition, bulky yarns that are bulky due to crimp expression treatment are expensive,
Moreover, there is a problem in that the multi-layered fabric having such bulky yarn inserted therein has no water retention property.

A first object of the present invention is to obtain a multi-layered woven fabric having a feeling of volume, and a second object thereof is to obtain an inexpensive multi-layered woven fabric having a water-retaining property and used for industrial materials.

[0007]

The multilayer fabric of the present invention comprises two
A multi-layer woven fabric having a number of woven fabrics 1 and 4 and a core yarn 7 arranged in the warp direction between both woven fabrics, and connecting the woven fabrics with pile yarns 9 and 10 in the warp direction. In, the relative positions of the pile yarns 9 and 10 forming a set are alternated each time the woven fabrics 1 and 4 on different sides are woven for a predetermined distance. It is characterized in that the weft-direction core yarns 8 arranged vertically are woven.

In the multi-layered woven fabric having the above-mentioned structure, the selvage yarns can be used as the warp yarns 3 and 6 and the weft yarns 2 and 5 and the core yarns 7 and 8 of the two woven fabrics 1 and 4, but the core yarns 7 and 8 If the selvage yarn is used only for, a multi-layered woven fabric having a smooth surface and a sense of volume can be obtained.

[0009]

In the multi-layered woven fabric having the above-mentioned structure, the core yarns 7 and 8 are laminated in a lattice shape to form a three-dimensional structure, so that a woven fabric having an excellent volume feeling can be obtained. Since the pile yarns 9 and 10 weave the weft-direction core yarn 8 arranged above and below the warp-direction core yarn 7, the core yarn 8 does not move. Furthermore, by using the selvage yarn as the core yarns 7 and 8, it is possible to inexpensively obtain a multi-layered fabric having water-retaining property, hygroscopic property and sound absorbing property, and to reuse the selvage yarn which has been conventionally discarded. You can

The multilayer fabric of the present invention having such a structure is filled with a foamed resin to be used as a floor, or a resin coating is applied on the surface to be used as an inner wall board or roof tile, or a mat of the geodrain method. It can be used as a material. For example, it is effective to lay the multi-layered fabric of the present invention in order to prevent slippery faults between the old ground and the embankment or between the concrete structure and the earth and sand. It is possible to impart sex.

It is also possible to increase the density of the internal structure and form a multilayer woven fabric which is hard to be crushed by weaving the warp and weft yarns of the upper and lower two woven fabrics by using heat shrinkable yarns and then heat shrinking. Furthermore, it is also possible to make a covering material excellent in soundproofing and heat insulating properties by utilizing the characteristics of the selvage yarn. In particular, a multi-layer woven fabric using a selvage yarn is suitable as an interior material because it has hygroscopicity inside and the surface is dry.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention.
It is a sectional view of the multi-layered fabric in the warp direction. In the figure, 1 is an upper woven fabric of a multilayer woven fabric, 2 is a weft of the upper woven fabric 1, 3 is an upper woven fabric 1
Is the warp. Reference numeral 4 is a lower woven fabric of the multilayer woven fabric, 5 is a weft of the lower woven fabric 4, and 6 is a warp of the lower woven fabric 4. 7 is a core yarn arranged in the warp direction between the upper and lower woven fabrics 1 and 4, and 8 is a core yarn arranged in the weft direction above and below the core yarn 7 in the warp direction. , 8 are stacked in three steps in a grid pattern. Nine and ten are pile yarns composed of a set of two yarns, which are separately woven into the upper woven fabric 1 and the lower woven fabric 4, respectively.

The pile yarns 9 and 10 are arranged over the four warp yarns of the upper and lower woven fabrics 1 and 4, and are woven for a certain distance and then replaced with the woven fabrics 1 and 4 on different sides. That is, the pile yarn 9 of the upper woven fabric shown by the broken line is passed over the weft yarn 5 of the lower woven fabric 4 through the five weft yarns 2 of the upper woven fabric 1, and the pile yarn 10 of the lower woven fabric shown by the one-dot chain line is It is laid over the weft yarn 2 of the upper woven fabric through the five weft yarns of the lower woven fabric. The alternating position of the pile yarns 9 and 10 and the position of the core yarn 8 in the weft direction are coincident with each other, and the pile yarns 9 and 10 alternating the relative positions interweave the core yarn 8 in the weft direction.

In the above-mentioned multi-layered fabric, the selvage yarns are used as the core yarns 7 and 8, and the normal weaving yarns are used as the weft yarns 2 and 5 and the warp yarns 3 and 6 which form the upper and lower woven fabrics 1 and 4. ing. The multi-layered woven fabric having such a structure has the features that the surface is smooth and has water retention property, is inexpensive, and has a volume feeling. In addition, if the selvage yarn is also used for the upper and lower woven fabrics, it is possible to obtain an inexpensive multilayer fabric having a more voluminous feel and excellent water retention property, which is suitable for use as a mat material for the geodrain construction method. ..

FIGS. 2 to 4 show a method for manufacturing a multi-layered woven fabric according to the present invention. Insert the weft yarns 2a, 5a at the positions where the mutual positions of the pile yarns 9, 10 alternate and beat them, without opening the warp yarns 3, 6 of the upper and lower woven fabrics 1, 4,
The pile yarn 9 of the upper woven fabric is moved downward, and the pile yarn 10 of the lower woven fabric 4 is moved upward. Then, as shown in FIG. 3, inverted triangular and triangular openings 11 and 12 are formed above and below the core yarn 7 in the warp direction. After inserting the four wefts 8a and 8b, which are core yarns in the weft direction, into the respective openings 11 and 12, part of the warp 3 of the upper woven fabric is moved upward to open the opening 1
Simultaneously with the formation of No. 3, the warp yarn 6 of the lower woven fabric is moved downward to form the opening 14. These openings 13,
The wefts 2b and 5b are inserted into 14 and beaten. The inserted wefts 2b and 5b are pushed to the vicinity of the wefts 2a and 5a, which are respectively woven in advance, and push the four wefts 8a and 8b that have been wefted downward or upward. The pushed wefts 8a and 8b are bundled by pile yarns 9 and 10 and are arranged in parallel above and below the core yarn 7 in the warp direction to become the core yarns 8 and 8 in the weft direction. By repeating such a weaving operation, the core yarns 7 and 8 can be stacked in a lattice shape, and the piled weft-direction core yarns 8 and 8 are
Because it is woven with 10, it does not move.

[0016]

As described above, according to the present invention, it is possible to provide a multi-layered woven fabric in which the core yarns can be arranged three-dimensionally, the inserted core yarns do not move, and which has a sense of volume. it can. Furthermore, when the selvage yarn is used as the woven yarn or the core yarn, it is possible to provide an inexpensive multi-layered woven fabric for industrial materials, which has water retention, hygroscopicity, sound absorption, and the like, and makes effective use of resources. be able to.

[Brief description of drawings]

FIG. 1 is a side view of a multi-layer fabric of the present invention in a warp direction.

FIG. 2 is a perspective view showing an inserting operation of the core yarn in the weft direction.

FIG. 3 is a side view showing a warp opening when inserting a core yarn in a weft direction.

FIG. 4 is a perspective view showing the weft insertion operation of the woven fabric.

FIG. 5 is a side view showing a warp shed when a weft of a woven fabric is inserted.

FIG. 6 is an enlarged sectional view of a selvage yarn having high tensile strength.

[Explanation of symbols]

 1 Upper woven fabric 4 Lower woven fabric 7 Core yarn 8 Core yarn 9 Pile yarn 10 Pile yarn

Claims (2)

[Claims] 1. Having two woven fabrics (1), (4) and a core yarn (7) arranged in a warp direction between both woven fabrics, wherein the woven fabrics are arranged in a warp direction. In a multi-layer woven fabric formed by connecting pile yarns (9) and (10), pile yarns (9) and (10) to be assembled are woven every predetermined distance into woven fabrics (1) and (4) on different sides. The relative position of the pile yarn is
(9) A multi-layer woven fabric comprising the core yarns (8) and (8) arranged above and below the core yarn (7) in the weft direction in (10). 2. The multi-layered woven fabric according to claim 1, wherein at least the core yarns (7) and (8) among the woven yarns and the core yarns that constitute the multi-layered woven fabric, are selvage yarns.