JPH09154871A - Extensible-contractible sticking plaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a stretching feeling even if it is used in a joint part or the like of a finger, and freely bend and stretch it without resistance by constituting it of extensible-contractible base cloth, nonwoven fabric formed of highly windable-contractible cotton and an extensible-contractible cover. SOLUTION: An extensible-contractible sticking plaster is composed of extensible-contractible base cloth 1, nonwoven fabric 2 formed of highly windable-contractible cotton and an extensible-contractible cover 3. Extensible- contractible nonwoven fabric and kitting are used as the extensible-contractible base cloth 1, and its Metsuke unit is economically undesirable when it is too large, and necessary extensible stress cannot be obtained when it is too small, and it is necessary to be properly selected by use. When highly windable- contractible cotton is used as raw cotton of the nonwoven fabric 2, it is desirable since extensible-contractible performance increases. Extensible-contractible woven knitting is better as a raw material to be used in the cover 3. The knitting is a general material, and holds sufficient extensible-contractible performance as an allowance of knitting tissue. Therefore, it is economically advantageous.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ambulances such as ambulances and surgical bands.

[0002]

2. Description of the Related Art Most of the conventional first-aid Bangsoukou use a vinyl chloride film as a base cloth. PVC film has poor stretchability and poor breathability. Since it is poor in elasticity, it has the drawback that when it is used for joints such as fingers, it is stretched and the fingers are difficult to bend. In addition, it has a poor breathability, so it tends to get stuffy, and the skin turns white when Peeling is removed. There are some cases where holes are made in the film for the purpose of improving the air permeability, but there is almost no effect.

It has already been proposed to use a stretchable nonwoven fabric as a base fabric for such purposes. JP-A-7-52326
The publication describes an example of using this elastic nonwoven fabric as a base fabric. The stretchable nonwoven fabric is commercially available from Kanebo Co., Ltd. under the trade name "Espancione". This is a polyurethane melt-blown non-woven fabric, 300% in both length and width.
The elongation is above, and the 50% elongation recovery rate is 85% or more. Since this non-woven fabric has a large stretchability and a large air permeability, the above-mentioned drawbacks of the base fabric itself are solved.

However, if the stretchability of the cloth placed on the base fabric is insufficient, the stretchability of that portion is significantly impaired as a whole. Further, the same problem occurs even if the elasticity of the cover on the non-woven fabric is insufficient. In the above proposal, there is no description of putting a non-woven fabric on the base fabric, and the knitted fabric has elasticity,
It is described as appropriate. However, since the density of the non-woven fabric is smaller than that of the knitted fabric, the non-woven fabric is preferable for the above purpose. However, the non-woven fabric has a loose structure and is likely to be seen to be rich in stretchability, but it is generally inferior to the knitted fabric in stretchability. Therefore, it is difficult to use the nonwoven fabric for the above purpose.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a stretchable Bansoukou, which has a large stretchability as a whole and has a small stretch feeling even when used in a finger joint or the like, at a low cost.

[0006]

[Means for Solving the Problems] In order to solve the problems, the present inventors conducted research on the nonwoven fabric 2 and the cover 3 to be laminated, and completed the present invention. The elastic Bansoukou of the present invention is an elastic Bansoukou characterized by comprising an elastic base fabric 1, a nonwoven fabric 2 made of highly crimped cotton, and an elastic cover 3.

As the stretchable base fabric 1 used in the present invention, there are stretchable nonwoven fabrics and knits, and it is economically unfavorable if the basis weight is too large. Also, if it is too small, the required elongation stress cannot be obtained. It depends on the application, but it must be selected appropriately. A polyurethane non-woven fabric is an example of this stretchable base fabric. An example of this polyurethane nonwoven fabric is "Espancione", a trade name manufactured by Kanebo Co., Ltd. This non-woven fabric is mainly used for improving tensile stress. If the basis weight is 15 g / m ² or more, 50% tensile stress is 25 g.
/ Cm or more, can achieve the purpose. 20 g / m ² or more is more preferable from the viewpoint of breaking strength.

Instead of the polyurethane non-woven fabric, it is also possible to use a non-woven fabric composed of another elastomer, for example, a block copolymer of polybutylene terephthalate and polybutane diol and a modified product thereof as a base fabric. In this case, if the basis weight is 20 g / m ² or more, the 50% elongation stress can be 25 g / cm or more.

As described above, the materials for the non-woven fabric and the knitted fabric used for the stretchable base fabric are polyurethane composed of diisocyanate of diphenylmethane diisocyanate or tolylene diisocyanate and ester, ether, carbonate-based polyol and chain extender such as butanediol. Or
Ester elastomers such as block copolymers of polyethylene oxide and polyethylene terephthalate, and rubbers such as natural rubber can be selected. However, polyurethane is preferable in terms of elastic recovery. At present, the polyurethane non-woven fabric "Espansione" is industrially produced in a stable manner, and is easily available.

It is preferable to use highly crimped cotton as the raw cotton of the nonwoven fabric 2 because the stretchability is increased. Highly crimpable cotton includes side-by-side composite fibers, and polyester fibers include composite fibers of polyethylene terephthalate and its isophthalate modified product, and composite fibers of metasodium sulfonic acid phthalate modified product. For example, Kanebo Co., Ltd.
There is "Espandi" made in Japan.

The number of crimps of this fiber is 40 fibers / inch or more when developed with boiling water. However, in reality, the number of occurrences is suppressed when a nonwoven fabric is used. This expression number is also closely related to the entanglement of fibers. The number of entanglements increases, and it decreases as the binding force increases.

The nonwoven fabric can be manufactured by a general needle punching method. A crosslay or a parallel web may be used, but a crosslay is suitable for a large non-woven fabric having a uniform basis weight. The basis weight of this non-woven fabric is 2
If it is 0 g / m ² or more, it can be used without trouble. The web is crimped by heat treatment. This expression has a smaller number of crimps than the case where cotton is expressed in a free state. As the number of crimps decreases, the stretchability of the nonwoven fabric decreases. This is because expression is suppressed by the constraint between fibers.

The nonwoven fabric 2 used in the present invention has a number of crimps of 10 or more per inch in the state of the nonwoven fabric. If the number of crimps is insufficient, the elasticity will be insufficient. The number of crimps was measured by taking a photograph with an SEM in the state of the nonwoven fabric, and measuring the number of crimps.

An adhesive is applied to the stretchable base cloth 1. The method of applying is not particularly limited, but the method of forming a film is not preferable because it impairs air permeability. Spray method,
There are knife coating methods and the like, but not limited to these.

As the pressure-sensitive adhesive, an acrylic resin-based adhesive is generally used. For example, there are many copolymers of 2-ethylhexyl acrylate and butyl acrylate. The ratio is 2
A weight ratio of 0:80 to 40:60 is often used. Some of the pressure-sensitive adhesives are polysiloxane-based ones, but since they have poor adhesion, it is preferable to use them together with an acrylic-based adhesive. The coating amount is often 5 to 40 microns.

The stretchable base fabric 1 may be rendered water repellent by a water repellent. As the water repellent, there is a fluorine-based water repellent, for example, Asahi Guard AG manufactured by Asahi Glass Co., Ltd.
730, DIC GUARD X-10 (trade name) manufactured by Dainippon Ink and Chemicals, Inc. is available. The amount of water repellent attached is 0.5
It is preferably about 10 g / m ² .

The stretchable base fabric 1 of the present invention can be dyed, and general dip dyeing and printing can be performed. Alternatively, the moped elastic stretchable fabric 1 may be used. Furthermore, antibacterial performance can be imparted by using a stretchable base cloth or knitted fabric mixed with an antibacterial agent.

The material used for the cover is preferably a stretchable woven or knitted fabric. Among them, since the woven fabric imparts stretchability, it is necessary to use a stretchable material such as spandex and change the weave. Therefore, it is economically disadvantageous.
On the other hand, knitting is a general knitting, and has sufficient stretchability as a space for knitting. Therefore, it is economically advantageous. Generally, warp knitting, such as tricot, seems to have limited elasticity in one direction, but if it is finished with a width and is sufficiently over-fed, it can be held in two directions. . Of course, the horizontal knitting or the like keeps the elasticity in two directions as a knitting structure.

The material of the cover is not particularly limited as long as it is a knit, and synthetic fibers, regenerated fibers, natural fibers, and mixed spun products, mixed fiber products and mixed knit products thereof can be used. Cotton is generally preferred. Stretchable non-woven fabrics such as "Espansione" can also be used for the cover, but it is necessary to compare them economically.

[0020]

EFFECTS OF THE INVENTION The stretchable first aid stove according to the present invention is excellent in stretchability because the gauze portion (nonwoven fabric 2) is excellent in stretchability. Therefore, even if it is used for a finger joint or the like, it can be flexed and extended freely without resistance. Further, when the stretchable base fabric is made of a non-woven fabric, it has excellent breathability and does not get stuffy.

[0021]

EXAMPLES Further details will be described in Examples. The stretchability of stretchable Bansoukou and non-woven fabrics was measured according to the standards for JIS knitted fabrics and interwoven fabrics.

Example 1 A side-by-side type highly crimped polyester cotton "Espandy" SD2d, 51 mm manufactured by Kanebo Co., Ltd. was hung on a card to prepare a cross lay web, which was lightly needle punched and then freely dried in a hot air dryer at 150 ° C. deflated, to produce a non-woven fabric 2 of basis weight 25 g / m ² was expressed crimped. As a result of measuring the number of crimps of this non-woven fabric by SEM, the number of crimps was 21.3 pieces / inch. The 50% elongation recovery rate of this nonwoven fabric was 83%.

A polyurethane melt blown nonwoven fabric "Espansione" manufactured by Kanebo Co., Ltd. having a basis weight of 75 g / m ² was used as the stretchable base fabric 1, and an acrylic adhesive was applied to a thickness of 40 microns. This tensile elongation is 4 both vertically and horizontally
The stretch recovery rate of 00% or more and 50% was 89%.

Next, a nylon tricot with a basis weight of 40 g / m ² having a longitudinal elongation of 66% and a lateral elongation of 123% is used for the cover 3, and these are laminated with a release paper as shown in FIG. Bansoukou was produced.

This stretchable Bansoukou was evenly stretched by 50% elongation, and the portion of the nonwoven fabric 2 was not difficult to stretch. In addition, the 50% expansion / contraction recovery rate was 89%, showing no effect of the nonwoven fabric 2.

A wear test was conducted on the second joint of the index finger, but there was almost no discomfort when bending or extending the finger. After wearing for 8 hours, the presence or absence of stuffiness was confirmed, and it was found that there was no change at all and the breathability was excellent.

Example 2 In the same manner as in Example 1, only the heat treatment temperature of the hot air dryer was changed to change the number of crimp occurrences of the nonwoven fabric 2 to produce a stretchable Bansoukou, and its stretchability was defined as the stretch recovery rate. The wearability was compared. The results are shown in Table 1.

[0028]

[Table 1]

Example 3 In the same manner as in Example 1, except that the stretchable base fabric 1 was changed to a moisture-permeable polyurethane film having a thickness of 40 μm, a stretchable bamboo shoot of the present invention was produced. This first aid band saw was uniformly stretched even by 50% stretching, and the portion of the nonwoven fabric 2 was not difficult to stretch. In addition, the 50% expansion / contraction recovery rate was 92%, and no influence of the nonwoven fabric 2 was recognized.

A wear test was conducted on the second joint of the index finger, but there was almost no discomfort when bending or stretching the finger. Moreover, after wearing for 8 hours, the presence or absence of stuffiness was confirmed, but despite the moisture-permeable film, the skin became slightly white and stuffiness occurred.

[Brief description of the drawings]

FIG. 1 An example of a cross-sectional view of a stretchable bamboo shoot

FIG. 2 is a plan view showing a state in which the release paper is peeled off.

[Explanation of symbols]

 1 Stretchable base fabric 2 Nonwoven fabric 3 Cover 4 Release paper

Claims (3)

[Claims] 1. A stretchable Bansoukou which comprises a stretchable base fabric 1, a nonwoven fabric 2 made of highly rolled cotton, and a stretchable cover 3. 2. The elastic Bansoukou according to claim 1, wherein the elastic base cloth is an elastomer nonwoven cloth. 3. The elastic Bansoukou according to claim 1, wherein the number of crimps of the highly crimped cotton of the nonwoven fabric 2 is 10 pieces / inch or more in the state of the nonwoven fabric.