JPS6038990Y2 - bed pad absorbent - Google Patents

Description

[Detailed description of the invention] This invention prevents people who have been in bed for a long time, who sweat heavily, who are incontinent or who are forced to defecate on the floor, from staining sheets and mats. This relates to a bed pad used for the purpose of preventing the spread of heat, and particularly to the absorbent material that constitutes the main body of the bed pad.

Products commonly referred to as bed pads are widely used for the above-mentioned purposes, but conventionally used products have the following drawbacks, and improvements have been desired.

In other words, conventional bed pads have a three-layer structure consisting of a surface layer, an absorbent layer, and a leak-proof layer, of which the surface layer is made of hydrophilic cellulose fiber alone, or a mixture of hydrophobic synthetic fibers, or It is composed of a single hydrophobic synthetic fiber.

On the other hand, the absorbent layer is made of cellulose fibers such as pulverized pulp, crepe paper, cotton, and rayon, and the leak-proof layer is made of hydrophobic synthetic resin film, crepe paper coated with hydrophobic synthetic resin, or laminated. It was made using methods such as

Since the conventional bed pad had the above-mentioned configuration,
When this is actually used, the bed pad itself tends to become damp, often wet, and gives off a strange odor.
Due to extremely unsanitary conditions, they had to be replaced frequently.

In particular, there was a problem in that it caused discomfort to the user.

A bed pad using urethane foam containing activated carbon has also been developed, but it is so stuffy that it is hardly put to practical use.

The present invention not only eliminates the drawbacks of the conventional type mentioned above and prevents contamination of sheets and mats, but also allows the user to use it comfortably. In this respect, it is fundamentally different from conventional bed pads.

In other words, the absorbent material of the present invention maintains the humidity of the skin surface to the normal level by the hygroscopic action of the absorbent material itself, even when the skin surface humidity is at or near 100% due to sweating, incontinence, etc. The idea was to provide a comfortable state to the user by absorbing foreign odors caused by sweat, excrement, etc.

The present invention will be specifically explained below with reference to the drawings which are an example of implementation.

FIG. 1 is an enlarged sectional view of the absorbent body itself, which forms the main body of the bed pad, and FIG. 2 shows an example of a bed pad constructed using this absorbent body.

In FIG. 1, reference numeral 1 denotes an upper layer, 2 an intermediate layer, and 3 a lower layer. Both the upper layer and the lower layer are made of synthetic fiber waste having hydrophobicity and thermal fusibility.

That is, for example, fibers obtained by spinning polypropylene, polyester, polyvinyl chloride, etc., are formed into a web by a dry method. In this case, each of the above-mentioned fibers may be used alone, but preferably the following It is preferable to use a mixture of two types of polymer fibers having different melting points, such as in the form of a so-called composite fiber.

Polyolefin fibers such as polypropylene and polyethylene are most suitable for use in this case, and since polypropylene has a melting point at least 20°C higher than polyethylene, these fibers with different melting points can be spun in parallel or Composite fibers are produced by sheath-core spinning or the like, and this is formed into a mat shape to form the upper and lower layer fiber bodies.

The thickness of the upper and lower layers 1 and 3 is 30 to 100 g/
It is appropriate to set the range to m.

Next, the intermediate layer 2 in the present invention will be explained.

For the intermediate layer 2, the above-mentioned composite fiber alone or a mixture of the above-mentioned low-melting point fiber is used, and B-type silica gel is uniformly fixed to this fiber body, and activated carbon is also used as necessary. do.

In Figure 1, silica gel 4 and activated carbon 5 are added to the fibrous body of the intermediate layer 2.
This figure illustrates a case in which both are fixed.

Note that the thickness of the intermediate layer is preferably in the range of 100 to 2009/d.

By the way, silica gel is known to have a moisture absorption function, and there are two types of silica gel, Type A and Type B, which have different moisture absorption characteristics, and the type used as a desiccant for foods etc. It is type A.

Although type A actively absorbs moisture from low humidity, its ability to absorb moisture does not increase much even at high humidity. Type B has a lower moisture absorption ability than type A at low humidity, but at high humidity (humidity 7.
0% or more), the moisture absorption ability increases rapidly.

In addition, Type B silica gel has the unique property of expelling the moisture it has absorbed once the humidity drops below 70% (see Figure 3).

In the present invention, B-type silica gel having such unique properties is contained in the intermediate layer of the absorbent material, so that the bed pad can exhibit the following functions suitable for the bed pad.

In other words, 1. When the area around the skin becomes 100% or close to 100% humid due to sweat, urine, etc., the high humidity around the skin is resolved by absorbing the water or moisture into the B-type silica gel inside the absorbent body. .

2 Generally, silica gel is porous and absorbs moisture in its pores, so even if it absorbs moisture, the outside does not feel damp.

Moreover, a surface layer (or a loose layer used between the surface layer and the intermediate layer) disposed on the upper surface of the intermediate layer containing this silica gel
It is made of hydrophobic fibers that do not absorb moisture, so it feels smooth and comfortable during use.

3. When the area around the skin dries up and the humidity decreases, the B-type silica gel begins to release moisture, which is a characteristic of the B-type silica gel, so it provides appropriate moisture to the skin area, and by releasing moisture, the B-type silica gel activates its moisture absorption function again. be done.

The absorbent body of the present invention has the effect of sustaining its moisture absorption function for a long time by repeating the breathing action of moisture absorption and release.

4. When a bed pad is used for a long period of time, it will emit a strange odor due to sweat, urine, etc. However, if activated carbon is contained in the absorbent body, the activated carbon will absorb such a strange odor, so the user can You won't have to worry about strange odors.

As described above, according to the present invention, silica gel fixed by composite fibers, etc., and activated carbon, if necessary, are present in the intermediate layer of the absorbent material that constitutes the main body of the bed pad, and furthermore, the surface of this intermediate layer is is made of polymerized synthetic fiber waste that has hydrophobicity and heat-fusibility, so these layers can be easily integrated by fusion by heat treatment, and in addition, the intermediate layer contains The adsorption and desorption effects of silica gel ensure a comfortable feel at all times.

In addition, when the present invention is used, when the human body becomes excessively dry, moisture is appropriately released from the intermediate layer to create a comfortable condition.

Incidentally, when the absorbent body of the present invention is used to make a final product of a pet pad, it is preferable to use the structure as shown in FIG. 2.

That is, after cutting the above-mentioned absorbent body (overall reference numeral 6) into appropriate dimensions, this is cut into a leak-proof layer 7 that is slightly larger than the absorbent body.
At the same time, cotton-like hydrophobic synthetic fiber waste 8 is attached to the upper surface of the absorbent body 6, and the layer 8 is placed on top of the absorbent body 6.
A sheet-like non-woven fabric 9 is placed so as to cover the entire absorber 6, and then the periphery thereof is adhered to the leak-proof layer 7.

Since the absorbent body of the present invention is hard, in actual use, it is preferable to provide the fiber layer 8, which functions as a cushioning material, on the surface of the absorbent body as described above.

By the way, the amount of silica gel and activated carbon to be fixed in the intermediate layer is 200-500v/d, 100-2009/? Preferably, the length is 71″.

Examples of the present invention will be shown below.

The fibers used for the upper layer 1 and the lower layer 3 include composite fibers (
100% EA-based composite adhesive fiber (EA Chop) manufactured by Chisso Corporation, and 50% of the composite fiber as the intermediate layer 2
and polyethylene synthetic pulp (Mitsui Zeraback Co., Ltd.
PE-480) and 50% of the blended materials are each put into a separate defibrating machine in a dry state.

Type B silica gel is used for the mixed fiber used in the middle layer.
/rd, and on the other hand, activated carbon (unmilled coconut shell activated carbon (passed through 42 meshes, with a particle size of 100 meshes) was added to 1009/rd.
rrl, respectively, and mix.

First, as the lower layer 3, the composite fibers are made into 509/771" composite fibers on a wire mesh conveyor using the first dry matte former.
Form it into a matte shape.

On the other hand, the intermediate layer fibers mixed with B-type silica gel and activated carbon are formed into a mat on a wire mesh conveyor using a second dry mat former, and this is laminated on the lower layer mat.

Similarly, the composite fibers formed into a mat shape using a third dry mat former are layered to obtain a mat having a three-layer structure.

Thereafter, this mat is introduced into a hot air oven at a temperature of 140° C. to heat-seal the composite fibers and the fusible portions of the heat-fusible fibers.

In this way, the fibers of each layer including composite fibers and heat-fused fibers and the inside of each layer are firmly fused, and the particles of B-type silica gel and activated carbon in the intermediate layer are fixed to the fibers, and the high melting point fibers in the composite fibers are Since it does not melt, sufficient fiber space is maintained within the fiber layer.

Therefore, an absorbent body that maintains good air permeability can be obtained.

[Brief explanation of drawings]

Fig. 1 is an enlarged cross-sectional view showing an example of the absorbent body of the present invention, Fig. 2 is a cross-sectional view showing a case where a bed pad is constructed using the same absorbent body, and Fig. 3 is a cross-sectional view showing an example of the absorbent body according to the present invention. It is a graph showing the crosstalk of adsorption at 25°C. 1...upper layer, 2...middle layer, 3...
...Lower layer, 4...B type silica gel particles, 5.
...Activated carbon particles, 7... Leak prevention layer, 8...
...Long guard layer, 9...Surface layer.

Claims (1)

[Claims for Utility Model Registration] 1 Mainly composed of synthetic fibers that are hydrophobic and have heat-fusibility properties, and between the lower layers, synthetic fibers that have hydrophobicity and heat-fusibility properties and B An absorbent body for a bed pad, characterized in that an intermediate layer formed by mixing molded silica gel is interposed, and the upper and lower layers and the intermediate layer are integrated by heat fusion. 2. An absorbent body for a bed pad as set forth in claim 1 of the utility model registration, which comprises activated carbon in addition to B-type silica gel in the intermediate layer. 3. An absorbent body for a bed pad according to claim 1, in which the upper and lower layers are made of composite fibers made of two types of polymers having different melting points.