JPH03133Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mat, particularly a mat that can be suitably used for rehabilitation.

Walking training is one type of rehabilitation aimed at people with physical disabilities and those in long-term care. This walking training involves walking slowly and repeatedly in corridors, etc., and various factors such as the hardness, elasticity, resistance to slipping, and heat retention of the walking surface greatly affect the difficulty of the training. For example, a wooden hallway is not suitable for walking training because the walking surface is too hard, lacks elasticity, and is slippery, making it difficult to walk on.
Another problem is that it is cold in winter. On the other hand, if a thin gymnastics mat, which is laid on a run-up track for floor exercise or vaulting, is used for rehabilitation purposes, the flexibility and elasticity will be excessive. In other words, this gymnastics mat has a three-layer structure in which a soft, high-density foam is used as the middle layer to increase elasticity against treading force.
When used in walking training, the problem is that due to its excellent elasticity, it causes a feeling of instability such as ``getting your foot caught'' and causes fatigue for pedestrians.

On the other hand, it is also possible to repurpose indoor carpets for rehabilitation purposes, but these also have advantages and disadvantages. It does not satisfy the requirements such as resistance to heat and heat retention.

The present invention was developed in view of the current situation, and it has a strong elasticity of the so-called ``waist'' that prevents pedestrians from feeling the sense of instability of ``trapping their feet'' and is not too stiff. The purpose of the present invention is to provide a pine that is easy to handle and durable, thereby making it particularly convenient for rehabilitation.

As illustrated in the figure, the mat of the present invention has a surface layer 4 laminated and adhered to a lower layer 1, an intermediate layer 2, and an upper layer 3 as required.

As the lower layer 1, a layer made of 1,2-polybutadiene foam with an expansion ratio of 5 to 30 times and a thickness of 1 to 10 mm can be suitably used. 1,2-Polybutadiene foam has excellent abrasion resistance and tear strength, as well as excellent non-slip properties, so it is currently the highest grade material used as a backing material for mats laid on underlayment materials and floorboards, that is, bottom layer 1. It can be said that it has quality. In addition, 1,2-polybutadiene foam generally has a high closed cell ratio and has small unit cells, so it has strong elasticity. This means that
This is meaningful in preventing the entire pine from feeling hard in the lower layer 1. The reason why the expansion ratio of the 1,2-polybutadiene foam is set to 5 to 30 times is because this expansion ratio allows it to have a suitable elasticity and has good abrasion and tear resistance. This is because sufficient strength can be obtained. The reason why the thickness is set to 1 to 10 mm is also due to the same reason.

As the hard synthetic resin foam for the intermediate layer 2, for example, a polystyrene foam having an expansion ratio of 30 to 50 times or a polyethylene-polystyrene mixed bead foam having a thickness of 10 to 100 mm can be suitably used. Such hard synthetic resin foams generally have high closed-cell properties and excellent rigidity, so they do not deform too much even when a load equivalent to a person's body weight is applied to them. In addition, since it has low flexibility, it is difficult to cause local "dents" etc. due to the above-mentioned load. Furthermore, this type of foam is widely used as a heat insulating material and has excellent heat retention properties.
If the foaming ratio is less than 30 times, it lacks rigidity when used for rehabilitation purposes, and if it exceeds 50 times, it tends to be too flexible, making it unsuitable for rehabilitation purposes.

The intermediate layer 2 made of this hard synthetic resin foam is adhered onto the above-mentioned lower layer 1 via an adhesive. Therefore, even when the lower layer 1 is made of a highly flexible 1,2-polybutadiene foam, the so-called "settling" of the lower layer 1 is effectively prevented by the intermediate layer 2.

Next, the 1,2-polybutadiene foam of the upper layer 3 needs to have a foaming ratio of 5 to 30 times and a thickness of 1 to 10 mm. If the foaming ratio is less than 5 times, the elasticity and flexibility will be poor, but if it exceeds 30 times, the "back" of the elasticity will be too weak, making it unsuitable for rehabilitation purposes. Moreover, if the thickness is less than 1 mm, effective elasticity will not be exhibited, and if it exceeds 10 mm, "settling" will easily occur due to use.
As is clear from the explanation of the lower layer 1, 1,2-polybutadiene foam has excellent abrasion resistance, tear strength, and non-slip properties, as well as exhibits strong elasticity. 1 and 2 as those that can maximize the various characteristics.
- 1,2-polybutadiene with about 70% or more bonding, a molecular weight of 100,000 or more, a crystallinity of 10-50%, and a syndiotactic stereoregularity of 20% or more (for example, manufactured by Nippon Gosei Rubber Co., Ltd.) Product name: JSR, RB-810
etc.) with a foaming ratio of about 8 times. If you use this, it has the advantage that it won't get damaged even if you poke it with a crutch, for example.

This upper layer 3 is laminated and adhered onto the above-mentioned intermediate layer 2 via an adhesive with good adhesive properties. Therefore, even if the upper layer 3 is made of a highly flexible 1,2-polybutadiene foam, its "settling" is effectively prevented by the intermediate layer 2 having excellent rigidity.

The surface layer 4 is provided as necessary. That is, even a mat having a three-layer structure consisting of a lower layer 1, an intermediate layer 2, and an upper layer 3 without the surface layer 4 can be suitably used for rehabilitation purposes. When the surface layer 4 is provided, it can be made of PVC leather, canvas, needle punch carpet, roof carpet, etc., and the thickness thereof is preferably about 0.5 to 5 mm. If a hygroscopic material such as canvas or needle-punch carpet is used as the surface layer 4, it will be able to absorb the sweat of pedestrians, thereby preventing the sweat from becoming slippery and preventing falls. This is useful in preventing such dangers. In addition, since the surface layer 4 itself has poor elasticity, the upper layer 3 is made of highly flexible materials 1 and 2.
- the upper layer 3 even if it is a polybutadiene foam;
The depth of depression can be moderately suppressed. Therefore, the sense of stability when walking is further improved than in the case where the surface layer 4 is not provided, and this helps to reduce the feeling of instability such as ``feeling like you can't take your feet.''

This surface layer 4 is adhered onto the upper layer 3 with an adhesive having good adhesive properties. Therefore, the upper layer 3 is deformed on both the front and back sides of the middle layer 2 and the surface layer 4, which have little elasticity.
As a result, "sagging" can be prevented even more reliably.

The above mats are used for rehabilitation by forming them into a square or rectangular shape of a predetermined size, laying them vertically and horizontally on an underlayment or a floorboard, and joining them together. In this case, in order to strengthen the joined portion, it is possible to use a joining means having a large number of locking hooks, such as Magic Tape (registered trademark), or double-sided tape.

As is clear from the above explanation, the middle layer of the pine according to the present invention is made of a hard synthetic resin foam that does not easily deform even when subjected to local loads and has excellent rigidity. Since the upper layer is made of 1,2-polybutadiene foam with a specified foaming ratio and thickness that has strong elasticity and non-slip properties, the upper layer will not be dented by the tread force when pedestrians walk on the middle layer. Backed up by. Therefore, due to the synergistic effect of this back-up force and the strength of the upper layer's "hips", the feeling when walking is neither too hard nor too soft, which prevents instability such as "getting your feet caught". It does not cause any sensation. This effect is further enhanced by the use of a 1,2-polybutadiene foam with a specified expansion ratio and thickness that has strong elasticity and non-slip properties as the lower layer attached to the middle layer. Ru.

In addition, the mat according to the present invention is made of foam not only for the middle layer as the core material but also for the upper and lower layers, making it extremely lightweight, making it easy to handle when laying the mat, etc., and keeping it warm. It also has excellent properties, so it has the advantage of not being cold even when used for rehabilitation purposes in the winter. moreover,
It is highly durable because the middle layer prevents the upper layer from sagging.

In addition to being used for walking training in rehabilitation, the mat according to the present invention can also be suitably used for bending and stretching training of various parts of the body, for playing with young children, and even as indoor flooring for the elderly. .

[Brief explanation of drawings]

The figure is a partial sectional view of a mat according to an embodiment of the present invention. 1...lower layer, 2...middle layer, 3...upper layer.

Claims (1)

[Scope of utility model registration request] 1,2 with a foaming ratio of 5 to 30 times and a thickness of 1 to 10 mm.
- A lower layer made of polybutadiene foam, an intermediate layer made of a hard synthetic resin foam such as polystyrene foam with an expansion ratio of 30 to 50 times and a thickness of 10 to 100 mm, and an intermediate layer made of a hard synthetic resin foam such as polystyrene foam with an expansion ratio of 5 to 30 times and a thickness of 1 mm. ~10mm 1,
A mat made by laminating and pasting an upper layer made of 2-polybutadiene foam in this order.