JPS6137214A - Structure of cushion material - 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] [Industrial Application Field] The present invention is used as an underlay material for chairs/seats, an underlay material for bedding/beds, an underlay material for floors of judo halls or gymnastics centers, or a physical education mat, etc. This relates to cushioning materials.

[Conventional technology]

Conventionally, as the Kunjon material, a combination structure of a sponge, a plastic foam such as polyurethane foam, a fiber aggregate made of felt, cotton waste, thread waste, etc., and a coil spring has been used.

[Problem that the invention seeks to solve]

In recent years, the demand for cushioning materials made from coil springs has gradually decreased, as they are inconvenient to carry, have a complex combination structure of coil springs, resulting in low productivity, and are easily broken. Foams and fiber aggregates have come to dominate cushioning materials.

However, although plastic foams and fiber aggregates have good heat-insulating properties, they have the disadvantage of feeling unpleasantly stuffy. Among these, plastic foams lack orientation and crystallinity of the polymer substances that make them up, and are therefore weak in strength, making them suitable for use as underlay materials for floors in judo halls, gymnasiums, etc., where intense expansion and contraction stress is applied, and for physical education (77). Moreover, although it has a high level of cushioning properties, it is rather uncomfortable to step on, giving a feeling of discomfort. In this regard, fiber aggregates such as felt have appropriate cushioning properties, and the individual fibers that make up the fibers have the advantage of having crystallinity and orientation, but since they are dense aggregates of fibers, sweat It cannot be washed even if it gets soaked or becomes dirty, and since it is just an aggregate of short fibers, the aggregate state is easily broken, and once the fiber aggregate is broken, it cannot be returned to its original state. Poor durability.

[Purpose of the invention]

Therefore, the present invention aims to provide a cushioning material that has good air permeability, does not feel stuffy, is extremely strong, and can be washed with water.

[Means for Solving the Problems and Structure of the Invention] As shown in the figure, the cushioning material 1 according to the present invention has an upper base fabric 2 and a lower base fabric 3 composed of threads, and connects these base fabrics. The upper base fabric 2 and the lower base fabric 3 are arranged in parallel with a certain distance a, and the connecting threads 6 stand up at right angles from one base fabric and connect to the other base fabric. The upper base fabric 2 and the lower base fabric 3 are connected in a continuous zigzag manner back and forth between the upper base fabric 2 and the lower base fabric 3 toward the base fabric of the upper base fabric and the lower base fabric. Upright portions 61 of a large number of upright connecting threads 6
The gap a between the upper base fabric 2 and the lower base fabric 3 is filled, and each connecting portion 62 between the connecting thread 6 and the upper base fabric and the lower base fabric It is integrated into these base fabrics so as to be intertwined with them to form a part of those base fabrics, and the connecting yarn 6 has a single yarn thickness of 0.4 that has been subjected to a drawing process. It is composed of one or more plastic threads having a size of 10 to 10 (88 to 2,200 deniers).

The cross-section of the plastic thread 6 may be circular or flat, and the cross-sectional shape is not limited, but it is preferably a cross-section similar to that of a Tenges thread.

The upper base fabric 2 and the lower base fabric 3 have warp threads 9 as shown in FIG.
It may have a woven structure made up of αω and weft yarns 7 (8), or it may have a knitted structure made up of knitting yarns 4 (5) as shown in FIG.

In the cushioning material according to the present invention, when the upper base fabric 2 and the lower base fabric 3 are woven or knitted into a double structure, connecting threads are used to connect the base fabrics during the weaving or knitting process. Article 6
The warp 9aO) and weft 7 (8) or knitting yarn 4 (5) of the base fabric
Insert so that they intertwine. To that end, we must
Double pile looms such as those described in No. 2045 and Japanese Patent Publication No. 50-10982, or Japanese Patent Publication No. 55-107
A double pile knitting machine such as that described in No. 561 or Japanese Patent Publication No. 58-24541 is used.

In other words, the cushioning material according to the present invention has a thickness of 0.4 to 10 (88 to 2
The upper and lower base fabrics 2 and 3 can be manufactured by weaving or knitting a plastic monofilament yarn (200 denier) like a pile yarn. In this case, the cushioning material 1 is constructed by connecting the upper and lower base fabrics 2 and 3 with the connecting yarn 6, so the cushioning material 1 is constructed by connecting the upper and lower base fabrics 2 and 3 with the connecting yarn 6, so that the cushioning material 1 is connected in the middle between the two base fabrics 2 and 3, as in the case of manufacturing pile fabric. Do not cut yarn 6.

[For production]

The cushioning material according to the present invention is constructed in the form of an extremely thick cloth, but the front and back surfaces are base fabrics 2 and 3 with gaps called weaves and stitches, and the cushioning material stands upright like a pile between them. Since it is only thickened by the connecting threads 6, it is breathable and easy to wash with water.

The upright portions 61 of the connecting yarns 6 fill the gap a between the upper and lower base fabrics as if they were densely planted with piles, providing cushioning properties.

The cushioning material of the present invention has yarns (composition yarns of the base fabric and connecting yarns) that are highly crystalline and oriented by being stretched in this way.
It has a strong and durable structure and has high abrasion resistance.

In addition, the connecting yarns do not become thin fibers of several deniers like the pile yarns of pile fabrics, but are made of fibers of size 0.4 to 10 (8
Since it is made of plastic monofilament yarn (8 to 2,200 deniers), it exhibits high elastic recovery power, and from this point of view as well, the cushioning material according to the present invention has excellent cushioning properties.

Moreover, unlike a pile, the upright portions 61 of the connecting yarns do not bend from the tip, and even if tread pressure is applied to the upright portions 61 of some of the connected yarns, the tread pressure is applied through the upper base fabric 2. is distributed to the upright portions 61' of other connecting threads,
The upright portions 61 of the connecting threads on which the direct treading pressure is applied are returned to their original upright state by being lifted up by the upper base fabric 2 by the elastic repulsive force of the other upright portions 61'.

〔Effect of the invention〕

As is clear, the present invention has durability that will not be damaged even by the repeated expansion and contraction stress, breathability that allows washing with water without feeling stuffy, and excellent elastic recovery power. This provides a cushioning material that is extremely convenient for use in flooring materials and cloaks for physical education, which require durability, or underlay materials for vents, which require breathability.

Incidentally, even if the cushion material according to the present invention is used with its surface covered with a required overlay sheet etc. to protect and decorate it,
Such use does not reduce or limit the technical scope of the present invention.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views schematically illustrating the structure of a cushioning material according to the present invention. 1... Cushion material, 2.3... Base fabric 4.5.9.10... Thread 6 that composes the base fabric... 4 knotted thread

Claims (1)

[Claims] It consists of an upper base fabric and a lower base fabric composed of threads, and a large number of connecting threads that connect these base fabrics, and the upper base fabric and the lower base fabric are arranged in parallel at a constant interval. Ori,
The connecting threads stand up from one base fabric at right angles and move toward the other base fabric in a continuous zigzag pattern between the upper and lower base fabrics to connect the upper and lower base fabrics. , the gap between the upper and lower base fabrics is filled by the upright portions of a large number of connecting yarns that stand upright with respect to the upper and lower base fabrics, and the upper and lower base fabrics of the connecting yarns Each connecting portion with the fabric is integrated with the base fabric so as to be entangled with the threads constituting the base fabric and constitute a part of the base fabric, and the connecting thread is The single yarn thickness that has been subjected to drawing treatment is 0.4~10 (88~2
200 denier), the structure of a cushioning material is comprised of one or multiple plastic threads.