JPS607708Y2 - Oral absorbent material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an oral absorbent material used for dental examination, treatment, preventive treatment, etc.

In the field of dentistry, it is often necessary to absorb saliva and dry tooth surfaces during examinations, treatments, and preventive procedures. was used.

However, rolled cotton has problems such as its low saliva absorption rate and its lint-free surface.For this reason, various oral absorbent materials have been proposed to replace rolled cotton. There has been a desire for an oral absorbent material that not only feels good but is also suitable for mass production.

The present invention was developed in response to the above-mentioned needs, and involves wrapping an absorbent body containing a water-absorbing polymer material with a water-permeable outer skin, folding it back, and leaving the side or both sides open in the longitudinal direction. The purpose of the present invention is to provide an oral absorbent material that has a high saliva absorption rate, is excellent in usability, has a good feeling of use, and can be manufactured easily and inexpensively by fixing the ends of the absorbent material. do.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a water-permeable sheet body, 2 is an absorbent body containing a water-absorbing polymeric substance, and as shown in the figure, an absorbent body 2 containing a water-absorbing polymeric substance is placed on a water-permeable sheet body 1. is placed on the sheet body 4, as shown in Fig. 2.
The absorbent body 2 is folded back in a cross-section state.

As shown in Fig. 3, the entire body is covered with a water-permeable outer skin 3, which is further folded back into a state suitable for intraoral application, as shown in Figs. 4 and 5. An absorbent material 6 is constructed by forming a release portion 4 on one side of the folded body and fixing the lengthwise end portion 5 by means such as heat sealing.

Here, the water-permeable sheet body 1 is preferably formed of absorbent paper, weakly waterproof paper, rayon paper, or the like.

In addition, the absorbent body 2 can be made of only a water-absorbing polymer material, but it can be made of cotton pulp, rayon, cellulose, etc.
It is preferable to use urethane fibers, sponges, etc. in which a water-absorbing polymer substance is dispersed.
It can be 0 to 2% by amount.

Examples of water-absorbing polymer substances include starch-acrylic acid-sodium acrylate graft copolymer, starch-acrylonitrile graft copolymer, starch-acrylamide-sodium acrylate copolymer, cross-linked sodium carboxymethyl cellulose, and acrylic ester copolymer. One or two of polymers, sodium acrylic acid polymers, etc.
These polymeric substances exhibit water absorption rates as low as 30 to 4 times their own weight, and as high as about 800 f@.

Further, the water-permeable outer skin 3 may be made of any material as long as it is water-permeable, but is particularly made of hydrophilic fibers O to 7% by amount.
A nonwoven fabric comprising 100 to 3% of hydrophobic fibers is preferably used.

This type of nonwoven fabric has a smooth surface even after absorbing saliva and is non-sticky, giving it a good feel.

Examples of hydrophilic fibers include cellulose fibers such as rayon, and examples of hydrophobic fibers include polyolefin fibers such as polyester fibers and polypropylene fibers, and polyolefin composite fibers such as composite fibers of polypropylene and polyethylene. However, as the hydrophilic fiber, rayon is particularly preferable, and as the hydrophobic fiber, for example, Efi fiber (composite fiber in which the surface of polypropylene fiber such as Chisso is coated with polyethylene, or a mixture of this and polyester fiber) is preferably used. It will be done.

In the above-mentioned embodiment, the sheet body 1 is folded into three as shown in FIG. It's okay.

Further, as shown in FIG. 2, the sheet body 1 with the absorbent body 2 placed thereon was folded back and the outer cover 3 was folded into three to wrap it.
The method of wrapping the outer skin 3 is not limited to this, and the outer skin 3 is folded in two as shown in FIG.
As shown in the figure, it may be folded in three, or in any way that is suitable for intraoral application, but when folding the outer skin 3, it may be folded in the width direction as shown by the arrow in Figure 3. It is preferable to fold it back.

Furthermore, as shown in FIG. 5, the release portions 4 may be formed on both sides.

Here, in the above embodiment, the absorbent body 2 is placed on the sheet body 1,
This is folded back and wrapped in the outer skin 3, which prevents the water-absorbing polymer material of the absorbent body 2 from spilling and is easy to handle. However, in some cases, the absorbent body 2 may be wrapped directly with the outer skin. .

The above-mentioned bark absorbent material 6 for oral cavity is used for purposes such as absorbing saliva and drying tooth surfaces during dental examinations, treatments, and preventive treatments. 2
Since it contains a water-absorbing polymer substance, it has a very high absorption rate and reliably absorbs a large amount of saliva.

Therefore, dental treatment can be performed without frequently replacing the absorbent material 6, and the treatment is easy to perform.

In addition, water-absorbing polymeric substances expand due to the absorption of saliva, but the absorbent material 6 of the present invention has one or both sides open and has an open part 4, so that the water-absorbing polymeric substances expand. It does not provide resistance to expansion and can absorb expansion with ample margin, so the effect of the water-absorbing polymer material is more reliably demonstrated and the amount of water absorbed is increased to its maximum extent. In addition, it is possible to provide more rapid absorption.

Moreover, in this case, since the absorbent body 2 is wrapped loosely with gaps, the absorbent capacity is more effectively exhibited from this point of view as well.

Furthermore, since the outer skin 3 is folded back one or more times to form a shape suitable for intraoral application, there is no need to fold it back again during use, and in this respect, it is easy to use.

Furthermore, since the absorbent material 6 of the present invention wraps the absorbent body 2 with the outer skin 3, it feels good in use, and especially when the above-mentioned nonwoven fabric of hydrophilic fibers and hydrophobic fibers is used, it does not have stickiness. It gives a good feel.

Furthermore, the absorbent material 6 of the present invention wraps the absorbent body 2 with the outer skin 3,
This is folded back and its longitudinal ends are fastened 5, and it is simple to manufacture, easy to mass produce, and can be manufactured at low cost.

Next, the water absorption effect of the absorbent material of the present invention will be specifically illustrated by the following experimental example.

[Experiment example]

The sheet material is absorbent paper, the absorbent material is made of water-absorbing polymer substances starch-acrylic acid-sodium acrylate graft copolymer 15%, cotton pulp 80%, rayon 5% (all percentages are by weight); A nonwoven fabric (polypropylene, spunbond nonwoven fabric) was used as the outer skin, and the length was 3oTrrIn and the width was 1 as shown in Figures 1 to 5.
We created a knowledge absorbing material.

Next, the amount of liquid absorbed by this absorbent material (sample No. 1) was measured under a predetermined pressure using artificial saliva as a test liquid.

For comparison, a cylindrical commercially available cotton roll (sample No. 0.2) with a length of 30 mm and a diameter of 1077 m and a sample
1, the length of the roll wrapped in a roll from the state shown in Figure 1 is 30TIr! It1 is a cylindrical roll with a diameter of 1- and no openings on the sides (sample output).

3), and the amount of liquid absorbed was measured in the same manner.

The results are shown in FIG.

In addition, the absorption amount was converted into a magnification of each sample's own weight and displayed.

From the results shown in FIG. 7, it was confirmed that the absorbent material of Sample No. 1 (product of the present invention) provided a high amount of liquid absorption.

[Brief explanation of the drawing]

Figure 1 is a schematic cross-sectional view of the absorbent body containing a water-absorbing polymer material placed on the sheet body, Figure 2 is a perspective view of the sheet body folded back with the absorbent body placed on the sheet body, and Figure 2 is a perspective view of the sheet body folded back with the absorbent body placed on the sheet body. Fig. 3 is a sectional view of the sheet body wrapped in an outer skin, Fig. 4 is a perspective view showing an embodiment of the present invention, Fig. 5 is an enlarged sectional view taken along the line ■-v in Fig. 4, and Fig. 6 The figure is a sectional view similar to FIG. 5 showing an embodiment of the present invention, and FIG. 7 is a graph showing the water absorption rates of various absorbent materials. 1...sheet body, 2...absorbent body, 3.
...Outer skin, 4...Release part.

Claims (1)

[Scope of utility model registration request] An absorbent body containing a water-absorbing polymer substance is wrapped directly or on a sheet body, or is folded back, wrapped in a water-permeable outer skin and folded back, and the side or both sides are left open. An absorbent material for the oral cavity, characterized in that the directional ends are fixed.