JP2021083934A - Both elastic pads and wound protection material using the same - Google Patents

Abstract

To provide both elastic pads 1 that can follow a stretching skin and firmly adhere thereto, even when affixed in a place having intense bending and straightening such as an elbow and a knee and enables obtaining a pleasant sense of use, and provide a wound protection material 4 using both elastic pads 1.SOLUTION: Both elastic pads 1 includes a sheet-like absorbing layer 2 comprising non-woven fabric and a sheet-like net layer 3 comprising nets pasted on one side of the absorbing layer 2. Both elastic pads are configured so as to have elasticity in the longitudinal and transverse directions in plan view. Both elastic pads are configured so that a longitudinal 20% modulus may be in a range of being larger than 0 N/19 mm and smaller than 25.3 N/19 mm, a longitudinal 40% modulus may be in a range of being larger than 0 N/19 mm and smaller than 31.7 N/19 mm, and a longitudinal 60% modulus may be in a range of being larger than 0 N/19 mm and smaller than 50.0 N/19 mm.SELECTED DRAWING: Figure 1

Description

The present invention relates to both elastic pads and a wound protective material using both elastic pads.

Conventionally, a wound protective material that can be used for a wound in a bent portion with a lot of bending has been proposed.

3 (a) and 3 (b) show an example of a conventional pad and a form of a wound protective material using the pad.

The conventional wound protection material 12 includes an adhesive tape 14 formed in a rectangular shape with four corners 13 rounded in a plan view, and a pad 15 formed in a rectangular shape in a plan view. The adhesive tape 14 is provided with an adhesive surface 16 on one side, and the pad 15 is attached vertically and horizontally to the center of the adhesive surface 16 of the adhesive tape 14.

The adhesive tape 14 of the wound protection material 12 described above is made of a non-woven fabric that can be expanded and contracted in the circumferential direction.

Prior art document information related to this type of wound protection material includes the following Patent Document 1 and the like.

Japanese Unexamined Patent Publication No. 2003-52740

However, when it is attached to a place where bending and stretching are severe, such as an elbow and a knee, the pad 15 of the wound protection material 12 has low elasticity, and there is a risk that it may not be able to follow the skin that expands and contracts in a plurality of directions. ..

Further, in recent years, the adhesive tape 14 of the wound protective material 12 is more required to have the ability to follow the skin that expands and contracts in a plurality of directions.

The present invention has been made in view of the above circumstances, and even when it is attached to a place where bending and stretching are severe such as elbows and knees, it can follow and firmly adhere to the skin that expands and contracts in a plurality of directions. It is an object of the present invention to provide a double elastic pad capable of obtaining a comfortable feeling of use and a wound protective material using the double elastic pad.

The present invention includes a sheet-shaped absorbent layer made of a non-woven fabric and a sheet-shaped net layer made of a net attached to one side of the absorbent layer so as to have elasticity in the vertical direction and the horizontal direction in a plan view. In both telescopic pads configured, the vertical 20% modulus is greater than 0N / 19mm and less than 25.3N / 19mm, and the vertical 40% modulus is greater than 0N / 19mm and greater than 31.7N / 19mm. It is applied to both telescopic pads, which have a small range and are configured such that the 60% modulus in the vertical direction is larger than 0N / 19mm and smaller than 50.0N / 19mm.

Thus, when both elastic pads are configured in this way, both elastic pads have elasticity in the vertical direction and the horizontal direction, and particularly have excellent elasticity in the vertical direction, and bending and stretching like elbows and knees are intense. Even when it is attached to a portion, it can follow and firmly adhere to the skin that expands and contracts in a plurality of directions.

In both telescopic pads of the present invention, the vertical 20% modulus is in the range of 0.36N / 19mm or more and 0.45N / 19mm or less, and the vertical 40% modulus is 0.50N / 19mm or more and 0.72N /. It is preferable that the range is 19 mm or less and the 60% modulus in the vertical direction is in the range of 0.76 N / 19 mm or more and 0.90 N / 19 mm or less. It can be expanded and contracted with a smaller force than before, and when attached to elastic skin, a more comfortable feeling of use can be obtained.

In both telescopic pads of the present invention, the lateral 20% modulus is in the range of 1.5N / 19mm or more and 2.0N / 19mm or less, and the lateral 40% modulus is 3.4N / 19mm or more and 4.0N / 19mm or less. It is preferable that the 60% modulus in the horizontal direction is in the range of 5.5 N / 19 mm or more and 6.3 N / 19 mm or less. It can be expanded and contracted in the lateral direction with a smaller force than before, and when it is attached to the elastic skin, it is possible to obtain a more comfortable feeling of use.

In both elastic pads of the present invention, the absorbent layer is a non-woven fabric made of at least one of polyethylene terephthalate, rayon, and polyolefin, and the net layer is a styrene elastomer, a polyurethane resin, a polyurethane elastomer, a polyolefin elastomer, and a polyester. It is preferable that the net is made of at least one of the elastomers, and in this way, the deformable structure using the deformable soft material provides both elastic pads with elasticity in the vertical direction and the horizontal direction. It is possible to have it.

In the bi-stretchable pad of the present invention, it is preferable that the two telescopic pads are formed in a rectangular shape and have elasticity in the short surface direction and the long surface direction. It becomes possible to make it easier to understand.

Further, the present invention includes both the elastic pads and an elastic layer made of a sheet-like urethane non-woven fabric which is elastic in the vertical and horizontal directions, has an adhesive surface on one side, and is wider than both elastic pads. The elastic tape is provided, and the both elastic pads are arranged so that the elastic direction of the elastic tape and the elastic direction of the elastic pad are aligned, and the absorbent layer is formed of the elastic tape. It is applied to a wound protective material, which is characterized by being attached to the center of the adhesive surface of the material.

When the wound protection material is configured in this way, the wound protection material in which both elastic pads and both elastic tapes are integrated can be made elastic in the vertical and horizontal directions, such as elbows and knees. Even when it is attached to a place where bending and stretching are severe, it is possible to follow and firmly adhere to the skin that expands and contracts in a plurality of directions.

In the wound protection material of the present invention, the both elastic tapes are formed in a rectangular shape with rounded four corners, and curved concave portions that gradually approach each other as they approach the intermediate position on each short side of the both elastic tapes. It is preferable that curved recesses are formed on each long side of both elastic tapes so that they gradually approach each other as they approach the intermediate position. In this way, the skin stress generated at the four corners is dispersed. , It is possible to reduce skin troubles.

According to the double elastic pads of the present invention and the wound protection material using both elastic pads, the skin that expands and contracts in a plurality of directions is followed even when it is attached to a place where bending and stretching are severe such as elbows and knees. Moreover, it can exert an excellent effect that it can be firmly adhered and a comfortable feeling of use can be obtained.

It is a figure which shows an example of the embodiment of both telescopic pads of this invention, (a) is a plan view, (b) is a front view, respectively. It is a figure which shows an example of the embodiment of the wound protection material of this invention, (a) is a plan view, (b) is a front view. It is a figure which shows an example of the form of the conventional pad and the wound protection material using the pad, (a) is a plan view, and (b) is a front view.

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

1 (a) and 1 (b) show an example of the embodiment of both telescopic pads of the present invention.

Both elastic pads 1 are configured to include a sheet-shaped absorbent layer 2 made of polyethylene terephthalate non-woven fabric and a sheet-shaped net layer 3 made of a styrene-based elastomer net attached to one side of the absorbent layer 2. .. The absorption layer 2 may be a polyester other than rayon, polyolefin, or polyethylene terephthalate. Further, the net layer 3 may be various elastomers such as polyurethane resin, polyurethane-based elastomer, polyolefin-based elastomer, and polyester-based elastomer.

Both telescopic pads 1 are formed in a sheet shape having a rectangular shape in a plan view, and are formed in a long surface direction (vertical direction in FIG. 1 (a)) and a short surface direction (horizontal direction in FIG. 1 (a)). It has elasticity.

Both elastic pads 1 are used so that the absorption layer 2 is located on the outside air side and the net layer 3 is located on the skin side when attached to the skin.

Then, in the case of both elastic pads 1 of the present embodiment, as described below, by adjusting the physical properties, dimensions, shape, etc. of the polyethylene terephthalate nonwoven fabric of the absorbing layer 2 and the styrene-based elastomer net of the net layer 3. Even when it is attached to a place where bending and stretching are severe, such as elbows and knees, it is also possible to follow and firmly adhere to the skin that expands and contracts in multiple directions.

In both telescopic pads 1, the vertical 20% modulus is in the range of 0.36 N / 19 mm or more and 0.45 N / 19 mm or less, and the vertical 40% modulus is 0.50 N / 19 mm or more and 0.72 N / 19 mm or less. The range is such that the 60% modulus in the vertical direction is in the range of 0.76 N / 19 mm or more and 0.90 N / 19 mm or less.

Here, the x% modulus means tension in the longitudinal direction with respect to a sheet-shaped test piece in which the width in the lateral direction is adjusted to 19 mm and the length in the longitudinal direction is adjusted to 100 mm, where x is a positive number. In addition to gradually increasing the load, it refers to the value of the tensile load when the longitudinal length of the test piece is extended by x% from the original length. The unit of x% modulus is N / 19 mm. The x% modulus is an index of softness, and the lower the value, the smaller the force that can be expanded and contracted in the longitudinal direction of the test piece.

That is, in the x% modulus in the vertical direction (the short side direction of both telescopic pads 1), the width in the horizontal direction is adjusted to 19 mm and the length in the vertical direction is adjusted to 100 mm, where x is a positive number. It is the value of the tensile load when the tensile load is gradually increased in the vertical direction to the test piece made of the pad 1 and the vertical length of the test piece is extended by x% from the original length. ..

In both telescopic pads 1, the vertical 20% modulus is larger than 0N / 19 mm and smaller than 25.3N / 19mm, and the vertical 40% modulus is larger than 0N / 19mm and smaller than 31.7N / 19mm. If the range is such that the 60% modulus in the vertical direction is greater than 0N / 19mm and less than 50.0N / 19mm, then the 20% modulus in the vertical direction, the 40% modulus in the vertical direction, and the vertical direction. 60% modulus may be another numerical range. In addition, it goes without saying that both telescopic pads have durability suitable for practical use.

In both telescopic pads 1, the lateral 20% modulus is in the range of 1.5 N / 19 mm or more and 2.0 N / 19 mm or less, and the lateral 40% modulus is 3.4 N / 19 mm or more and 4.0 N / 19 mm or less. The range is such that the 60% modulus in the lateral direction is in the range of 5.5 N / 19 mm or more and 6.3 N / 19 mm or less.

The two telescopic pads 1 are preferably configured so that the basis weight (weight per unit area) is 120 g / m ² ± 40 g / m ^2, and here, the basis weight is 120 g / m ² .

The two telescopic pads 1 are preferably configured to have a water absorption (water absorption amount per unit area) of 950 g / m ² ± 200 g / m ^2, and here, the water absorption is 950 g / m ² . To do.

Both telescopic pads 1 are preferably formed in a rectangular shape having a length in the short surface direction of 25 mm or more and 45 mm or less and a length in the long surface direction of 40 mm or more and 95 mm or less. The length is 25 mm, and the length in the long surface direction is 40 mm.

Both telescopic pads 1 can be formed in a rectangular shape having a length in the short surface direction of 30 mm and a length in the long surface direction of 50 mm, and the length in the short surface direction is 35 mm and the length in the long surface direction is 35 mm. It can also be formed in a rectangular shape having a length of 60 mm. Further, both telescopic pads 1 can be formed in a rectangular shape having a length in the short surface direction of 45 mm and a length in the long surface direction of 75 mm, and further, a length in the short surface direction is 45 mm and a length. It can also be formed in a rectangular shape having a length in the plane direction of 90 mm.

It can be said that both elastic pads 1 can follow the expansion and contraction of the epidermis of the elbow and knee as long as they have elasticity to the same range as the upper limit of the elongation rate of the epidermis of the elbow and knee.

The epidermis of the elbow and knee that stretches and contracts was measured as follows.

・ Test 1: Measurement of epidermis elongation of elbows and knees

A total of 10 subjects, A, B, C, D, E, F, G, H, I, and J, with 5 adult males and 5 adult females, with their elbows extended, in the middle of the elbow joints. As a point, a mark was made at a point 4 cm above and below, and with the knee extended, a midpoint was made under the plate of the knee, and a mark was made at a point 4 cm above and below.

Regarding the original length of the elbow epidermis, the distance between the upper and lower points when the elbow is extended is measured so as to pass through the midpoint, and the subjects A, B, C, D, E, F, G , H, I, J were asked to bend the elbow about 180 degrees each to the extent that it could be bent, and the length of the skin of the elbow after stretching was set to the distance between the upper and lower points in the bent state of the elbow. It was measured via a point.

The difference between the distance between the upper and lower points when the elbow is bent and the distance between the upper and lower points when the elbow is extended is divided by the distance between the upper and lower points when the elbow is extended, and the percentage is The value represented by is calculated as the elongation rate of the elbow epidermis.

Regarding the original length of the epidermis of the knee, the distance between the upper and lower points in the extended state of the knee is measured so as to pass through the midpoint, and the subjects A, B, C, D, E, F, G , H, I, and J were asked to bend their knees by about 180 degrees to the extent that they could be bent, and the distance between the upper and lower points in the bent state was measured so as to pass through the midpoint.

The difference between the distance between the upper and lower points when the knee is bent and the distance between the upper and lower points when the knee is extended is divided by the distance between the upper and lower points when the knee is extended, and the percentage is The value represented by is calculated as the elongation rate of the epidermis of the knee. The unit of distance is cm, and the unit of elongation is%. The results are shown in Table 1 below.

From the test results that the elongation rate of the epidermis of the elbow is 57.5% at the maximum and the epidermis of the knee is 50% at the maximum, the epidermis of the elbow and the knee is the original length even if the elbow and the knee are bent. From this, it can be seen that it is unlikely that it will grow by 60% or more.

Further, if both telescopic pads 1 can be stretched with a lighter force than the conventional pad 15, it can be said that a more comfortable feeling of use can be obtained than the conventional pad 15.

The physical properties of both telescopic pads 1 and the conventional pad 15 of this example were measured and tested as follows.

-Test 2: Measurement of the modulus of both telescopic pads 1 and the conventional pad 15.

Ten test samples having the same configuration as the double telescopic pads 1 of this example were prepared. Each test sample includes a sheet-shaped absorbent layer 2 made of polyethylene terephthalate non-woven fabric and a sheet-shaped net layer 3 made of a styrene-based elastomer net attached to one side of the absorbent layer 2.

From each of the test samples, from the first test piece in which the width in the vertical direction (long side direction of both telescopic pads) is adjusted to 19 mm and the length in the horizontal direction (short side direction of both telescopic pads) is adjusted to 100 mm. From the tenth test piece and the eleventh test piece in which the width in the horizontal direction (the short side direction of both telescopic pads) is adjusted to 19 mm and the length in the vertical direction (the long side direction of both telescopic pads) is adjusted to 100 mm. The 20th test piece was obtained.

The tensile load is gradually increased in the lateral direction with respect to each of the first test piece to the tenth test piece, and the lateral length from the first test piece to the tenth test piece is the original length. The values of the tensile load when extended from (100 mm) by 20%, 40%, and 60% are set to 20% modulus, 40% modulus, and 60% in the lateral direction (lateral direction) of both telescopic pads 1 in each test sample, respectively. Measured as modulus.

The tensile load is gradually increased in the vertical direction for each of the eleventh test piece to the twenty-two test piece, and the length of the eleventh test piece to the twenty-two test piece in the vertical direction is increased. The values of the tensile load when extended by 20%, 40%, and 60% from the original length (100 mm) are 20% modulus and 40% in the long surface direction (longitudinal direction) of both telescopic pads 1 in each test sample, respectively. Measured as modulus, 60% modulus.

20% modulus average value in the short side direction (horizontal direction) of both telescopic pads 1, 40% modulus average value, 60% modulus average value, 20% modulus in the long side direction (longitudinal direction) of both telescopic pads 1. The average value of, the average value of 40% modulus, and the average value of 60% modulus were calculated.

As shown in FIGS. 3 (a) and 3 (b), the conventional pad 15 to be compared includes a sheet-shaped absorbent layer 17 made of rayon non-woven fabric and a polyethylene net attached to one side of the absorbent layer 17. It is configured to include a sheet-like net layer 18 made of the material.

The conventional pad 15 is formed in a rectangular shape, and of the vertical direction and the horizontal direction, the direction with lower elasticity is the lateral direction (horizontal direction), and the direction with higher elasticity is the longitudinal direction (vertical direction). ).

From the conventional test sample configured in the same manner as the conventional pad 15, the width is adjusted to 19 mm and the direction of higher elasticity is adjusted so that the direction of lower elasticity is the shorter direction and the width is adjusted to 19 mm. The 23rd test piece was obtained from the 21st test piece whose length was adjusted to 100 mm in the longitudinal direction.

A tensile load is gradually increased in the longitudinal direction (in the direction of higher elasticity) with respect to each of the 21st test piece to the 23rd test piece, and the 21st test piece to the first Twenty-three The average value of the tensile load at each elongation rate when the length in the longitudinal direction of the test piece is extended by 20%, 40%, and 60% from the original length (100 mm) is the longitudinal length of the conventional pad 15, respectively. The directions were 20% modulus, 40% modulus, and 60% modulus. In the measurement, an autograph in which the upper limit value that can be measured is 50.0 N is used. The unit of each modulus is N / 19 mm. The results are shown in Table 2 below.

It can be seen that the both telescopic pads 1 are more likely to expand and contract in the long surface direction than in the short surface direction. That is, if the two telescopic pads 1 are vertically attached to the elbows and knees, they can be extended in the longitudinal direction to provide a comfortable attachment feeling that does not hinder the movement.

Since the conventional pad 15 broke before being stretched by 60%, in Table 2, the vertical 60% modulus of the conventional pad 15 is set to 50.0 N / 19 mm or more, which is the upper limit value that can be measured by the autograph.

In the range of each modulus in the vertical direction of the conventional pad 15, when it is attached to a place where bending and stretching are severe such as elbows and knees, it cannot follow the skin that expands and contracts in multiple directions and cannot adhere firmly. There was a risk. On the other hand, in both telescopic pads 1, the upper limit of each modulus in the vertical direction is smaller than the lower limit of each modulus in the longitudinal direction (direction of higher elasticity) of the conventional pad 15, so that the feeling of use is more comfortable. Obtainable.

In the test 2, the absorption layer 2 is at least one of rayon and polyolefin, and the net layer 3 is at least one of various elastomers such as polyurethane resin, polyurethane-based elastomer, polyolefin-based elastomer, and polyester-based elastomer. In the case of both elastic pads 1 which is one of them, the same result is obtained.

As described above, both the elastic pads 1 of the above embodiment include a sheet-shaped absorbent layer 2 made of a non-woven fabric and a sheet-shaped net layer 3 made of a net attached to one side of the absorbent layer 2. Both elastic pads 1 are configured to have elasticity in the vertical direction and the horizontal direction in a plan view, and the 20% modulus in the vertical direction is larger than 0N / 19mm and smaller than 25.3N / 19mm in the vertical direction. 40% modulus is greater than 0N / 19mm and less than 31.7N / 19mm, and 60% modulus in the vertical direction is greater than 0N / 19mm and less than 50.0N / 19mm. The elastic pad has elasticity in the vertical and horizontal directions, and has excellent elasticity in the vertical direction, and it expands and contracts in multiple directions even when it is attached to a place where bending and stretching are severe, such as elbows and knees. It is possible to follow the skin and make it adhere firmly.

In both telescopic pads 1 of the above embodiment, the 20% modulus in the vertical direction is in the range of 0.36 N / 19 mm or more and 0.45 N / 19 mm or less, and the 40% modulus in the vertical direction is 0.50 N / 19 mm or more and 0. The range is .72N / 19mm or less, and the 60% modulus in the vertical direction is configured to be in the range of 0.76N / 19mm or more and 0.90N / 19mm or less. It can be expanded and contracted with a small force, and when attached to elastic skin, a more comfortable feeling of use can be obtained.

In both telescopic pads 1 of the above embodiment, the lateral 20% modulus is in the range of 1.5N / 19mm or more and 2.0N / 19mm or less, and the lateral 40% modulus is 3.4N / 19mm or more and 4.0N. Since the range is 19 mm or less and the 60% modulus in the horizontal direction is configured to be 5.5 N / 19 mm or more and 6.3 N / 19 mm or less, both telescopic pads can be used not only in the vertical direction but also in the horizontal direction. It can be expanded and contracted with a smaller force than before, and when attached to elastic skin, it is possible to obtain a more comfortable feeling of use.

In both elastic pads 1 of the above embodiment, the absorption layer is a non-woven fabric made of at least one of polyethylene terephthalate, rayon, and polyolefin, and the net layer is a styrene elastomer, a polyurethane resin, a polyurethane elastomer, and a polyolefin elastomer. Since it is a net made of at least one of polyester-based elastomers, it is possible to give both elastic pads 1 elasticity in the vertical direction and horizontal direction by a deformable structure using a soft material that can be deformed. It becomes.

Further, since the double telescopic pads 1 of the above embodiment are formed in a rectangular shape and have elasticity in the short surface direction and the long surface direction, the direction in which the double telescopic pads 1 expand and contract can be grasped from the shape of the double elastic pads 1. It becomes possible to make it easier.

2 (a) and 2 (b) show an example of the embodiment of the wound protection material of the present invention.

The wound protection material 4 includes the double elastic pads 1 and the double elastic tape 7 provided with the adhesive surface 5 on one side and the elastic layer 6 made of a sheet-shaped urethane non-woven fabric wider than the double elastic pads 1. Has been done. The description of the double telescopic pad 1 itself will be omitted because it has been described by an example of the embodiment of the double telescopic pad 1 of the present invention described above.

The double elastic tape 7 has a sheet shape, is formed in a rectangular shape with four corners 8 rounded in a plan view, and has a curved surface that gradually approaches each short side of the double elastic tape 7 as it approaches an intermediate position. A concave portion 9 having a shape is formed, and a concave portion 10 having a curved surface shape is formed on each long side of both elastic tapes 7 so as to gradually approach each other as the intermediate position is approached.

Both elastic tapes 7 have elasticity in the long surface direction (longitudinal direction) and the short surface direction (horizontal direction) in a plan view.

In both elastic pads 1, the absorbent layer 2 is attached to the center of the adhesive surface 5 of the elastic tape 7, and the long surface direction of the elastic pads 1 is the long surface direction (more elastic) of the elastic tape 7. It is arranged so as to be aligned in the direction of high elasticity) and the short surface direction of both elastic pads 1 is aligned with the short surface direction of both elastic tapes 7 (direction of lower elasticity).

The wound protection material 4 is used by attaching the double elastic tape 7 to the skin so that the net layer 3 of the double elastic pads 1 is in contact with the wound surface.

Then, in the case of the wound protective material 4 of the present embodiment, in addition to adjusting the physical properties, dimensions, shape, etc. of the polyethylene terephthalate nonwoven fabric of the absorption layer 2 and the styrene elastomer net of the net layer 3, as described below. In addition, by adjusting the physical characteristics, dimensions, shape, etc. of the urethane non-woven fabric of both elastic tapes 7, even when the urethane non-woven fabric is attached to a place where bending and stretching is severe, such as elbows and knees, the skin expands and contracts in a plurality of directions. It is also designed to follow and firmly adhere.

Both elastic pads 1 constituting the wound protection material 4 are formed so that the length in the short surface direction is 25 mm, the length in the long surface direction is 40 mm, and the basis weight is 120 g / m ² . Both elastic tapes 7 constituting the wound protection material 4 are formed so that the length in the short surface direction is 50 mm and the length in the long surface direction is 80 mm, and the four corners 8 are one of circles having a radius of 15 mm. It is formed to be a part. Further, the concave portion 9 on the short side is formed in a curved surface shape recessed toward both telescopic pads 1 so that the width in the short surface direction is 22 mm and the width in the long surface direction at the intermediate position in the short surface direction is about 2.5 mm. The concave portion 10 on the long side is formed in a curved surface shape recessed toward both telescopic pads 1 so that the width in the long surface direction is 44 mm and the width in the short surface direction at the intermediate position in the long surface direction is about 2.5 mm. Has been done.

The double elastic tape 7 is preferably formed so that the length in the short surface direction is 50 mm or more and 80 mm or less, and the length in the long surface direction is 80 mm or more and 130 mm or less. The four corners 8 are preferably formed so as to be a part of a circle having a radius of 15 mm or more and 24 mm or less.

The concave portion 9 on the short side has a curved surface shape recessed toward both telescopic pads 1 so that the width in the short surface direction is 22 mm or more and 33 mm or less and the width in the long surface direction at the intermediate position in the short surface direction is 2 mm or more and 3 mm or less. It is preferably formed in. The recess 10 on the long side has a width in the long surface direction of 44 mm or more and 70 mm or less, and a width in the short surface direction at an intermediate position in the long surface direction of 1.5 mm or more and 2.5 mm or less on both telescopic pads 1 side. It is preferable that it is formed in a curved shape that is recessed.

The four corners 8 and the recesses 9 on the short sides are preferably formed so as to be smoothly continuous in an arc having a radius of about 3 mm. It is preferable that the four corners 8 and the straight portion 11 on the long side are formed so as to be smoothly continuous in an arc having a radius of about 3 mm. It is preferable that the straight portion 11 on the long side and the concave portion 10 on the long side are formed so as to be smoothly continuous with an arc having a radius of about 3 mm.

Both elastic pads 1 constituting the wound protection material 4 can be formed so that the length in the short surface direction is 30 mm, the length in the long surface direction is 50 mm, and the basis weight is 120 g / m ² . Both elastic tapes 7 constituting the wound protection material 4 are formed so that the length in the short surface direction is 60 mm and the length in the long surface direction is 100 mm, and the four corners 8 are one of circles having a radius of 22 mm. Both telescopic pads are formed so as to form a portion, and the recess 9 on the short side has a width in the short surface direction of 27 mm and a width in the long surface direction at an intermediate position in the short surface direction of about 2.5 mm. The concave portion 10 on the long side, which is formed in a curved shape recessed on one side, has both telescopic pads so that the width in the long surface direction is 52 mm and the width in the short surface direction at the intermediate position in the long surface direction is about 2.5 mm. It can be formed into a curved shape that is recessed on one side.

Both elastic pads 1 constituting the wound protection material 4 can be formed so that the length in the short surface direction is 45 mm, the length in the long surface direction is 75 mm, and the basis weight is 120 g / m ² . Both elastic tapes 7 constituting the wound protection material 4 are formed so that the length in the short surface direction is 80 mm and the length in the long surface direction is 130 mm, and the four corners 8 are one of circles having a radius of 24 mm. The recesses 9 on the short side are formed so as to be portions, and the recesses 9 on the short side are both telescopic pads so that the width in the short side direction is 33 mm and the width in the long side direction at the intermediate position in the short side direction is about 2.5 mm. The concave portion 10 on the long side, which is formed in a curved shape recessed on one side, has both telescopic pads so that the width in the long surface direction is 70 mm and the width in the short surface direction at the intermediate position in the long surface direction is about 2.5 mm. It can be formed into a curved shape that is recessed on one side.

The physical properties of both elastic tapes 7 of this example were measured and tested as follows.

-Test 3: Measurement of adhesive strength, 50% modulus, breaking strength, and elongation rate of both elastic tapes 7 of this example.

From the test sample configured in the same manner as the two elastic tapes 7, the width in the vertical direction (the long side direction of both elastic tapes 7) is adjusted to 19 mm, and the length in the horizontal direction (the short side direction of both elastic tapes 7). The width of the 24th test piece adjusted to 100 mm, the width in the horizontal direction (the short side direction of both elastic pads) is adjusted to 19 mm, and the length in the vertical direction (the long surface direction of both elastic tapes 7) is 100 mm. An adjusted 25th test piece was obtained.

The 25th test piece is attached to an adherend, and a load is applied to the 25th test piece so as to peel off one end in the longitudinal direction toward the other end, and the twenty-fifth test piece is peeled off. (V) The value of the load when the test piece was peeled off was measured as the adhesive strength of both elastic tapes 7 of this example.

A tensile load is gradually increased in the longitudinal direction (lateral direction) with respect to the 24th test piece, and the lateral length of the 24th test piece is from the original length (100 mm). The value of the tensile load when stretched by 50% was measured as 50% modulus in the short side direction (lateral direction) of both elastic tapes 7.

The value of the tensile load when the 24th test piece is broken is measured as the breaking strength in the short surface direction of both elastic tapes 7 of this embodiment, and when the 24th test piece is broken. The lateral length of the 24th test piece was measured, and the lateral length of the 24th test piece when the 24th test piece was broken was determined by the 24th test. Divided by the original length (100 mm) in the lateral direction of one piece, the value expressed as a percentage was calculated as the elongation rate in the short surface direction of both elastic tapes 7 of this example.

Further, a tensile load is gradually increased in the longitudinal direction (longitudinal direction) with respect to the 25th test piece, and the vertical length of the 25th test piece is the original length (100 mm). ), The value of the tensile load when extended by 50% was measured as 50% modulus in the long surface direction (longitudinal direction) of both elastic tapes 7.

The value of the tensile load when the 25th test piece is broken is measured as the breaking strength in the long surface direction of both elastic tapes 7 of this embodiment, and when the 25th test piece is broken. The vertical length of the 25th test piece is measured, and the vertical length of the 25th test piece when the 25th test piece is broken is determined by the 25th test. Divided by the original length (100 mm) in the vertical direction of one piece, the value expressed as a percentage was calculated as the elongation rate in the long surface direction of both elastic tapes 7 of this example.

Further, a similar test was conducted on the conventional adhesive tape 14 as a comparison target. Here, as shown in FIGS. 3A and 3B, the conventional adhesive tape 14 includes a sheet-shaped elastic layer 19 made of urethane non-woven fabric and a sheet-shaped film layer 20 made of polyurethane film. One surface of the film layer 20 is attached to the elastic layer 19, and an adhesive surface 16 is provided on the other surface.

From the test sample configured in the same manner as the conventional adhesive tape 14, the width in the vertical direction (long side direction of the conventional adhesive tape 14) is adjusted to 19 mm and the horizontal direction (short side direction of the conventional adhesive tape 14). The 26th test piece whose length is adjusted to 100 mm, and the width in the horizontal direction (the short side direction of the conventional adhesive tape 14) is adjusted to 19 mm and the vertical direction (the long side direction of the conventional adhesive tape 14). The 27th test piece was obtained by adjusting the length of the sample to 100 mm.

The 27th test piece is attached to an adherend, and a load is applied to the 27th test piece so as to peel off one end in the longitudinal direction toward the other end. (7) The value of the load when the test piece was peeled off was measured as the adhesive strength of the conventional adhesive tape 14.

A tensile load is gradually increased in the longitudinal direction (lateral direction) with respect to the 26th test piece, and the lateral length of the 26th test piece is from the original length (100 mm). The value of the tensile load when stretched by 50% was measured as 50% modulus in the short surface direction (lateral direction) of the conventional adhesive tape 14.

The value of the tensile load when the 26th test piece is broken is measured as the breaking strength in the short surface direction of the conventional adhesive tape 14, and the second when the 26th test piece is broken. The lateral length of the 16 test pieces is measured, and the lateral length of the 26 test pieces when the 26 test pieces are broken is determined by the lateral length of the 26 test pieces. Divided by the original length (100 mm) in the direction, the value expressed as a percentage was calculated as the elongation rate in the short surface direction of the conventional adhesive tape 14.

Further, a tensile load is gradually increased in the longitudinal direction (longitudinal direction) with respect to the 27th test piece, and the vertical length of the 27th test piece is the original length (100 mm). ), The value of the tensile load when extended by 50% was measured as 50% modulus in the long surface direction (longitudinal direction) of the conventional adhesive tape 14.

The value of the tensile load when the 27th test piece is broken is measured as the breaking strength in the long surface direction of the conventional adhesive tape 14, and the second when the 27th test piece is broken. The vertical length of the 17th test piece is measured, and the vertical length of the 27th test piece when the 27th test piece is broken is determined by the vertical length of the 27th test piece. Divided by the original length (100 mm) in the direction, the value expressed as a percentage was calculated as the elongation rate in the long surface direction of the conventional adhesive tape 14. The unit of adhesive strength is N / 19 mm, the unit of 50% modulus is N / 19 mm, the unit of breaking strength is N / 19 mm, and the unit of elongation is%. The results are shown in Table 3 below.

As described above, since the double elastic tape 7 of the present embodiment is formed of a deformable soft material and has a deformable structure, it can be made stretchable in both the short surface direction and the long surface direction. It has become.

Therefore, the wound protective material 4 of the present embodiment in which both the elastic pads 1 and the elastic tape 7 are combined has elasticity in the vertical direction and the horizontal direction.

The 50% modulus is an index of softness indicating the force required to stretch the double elastic tape 7 and the conventional adhesive tape 14 of the present embodiment by 50% of the original length, and the lower the value, the softer the tape. ing.

In the item of 50% modulus, the 50% modulus in the short side of both elastic tapes 7 is lower than the 50% modulus in the short side of the conventional adhesive tape 14, and the 50% modulus in the long side of both elastic tapes 7 is. It is lower than the 50% modulus in the long surface direction of the conventional adhesive tape 14, and it can be seen that both elastic tapes 7 of this embodiment are softer than the conventional adhesive tape 14. That is, it can be said that both elastic tapes 7 of this embodiment have higher adhesion than the conventional adhesive tape 14 by following the skin that expands and contracts in a plurality of directions.

Unlike the conventional adhesive tape 14, the double elastic tape 7 of this embodiment has higher elasticity than the conventional adhesive tape 14 because the urethane non-woven fabric is not laminated with the polyurethane film.

As described above, in the wound protection material 4 of the above-described embodiment, the bi-stretchable pad 1 and the bi-stretchable pad 1 are provided with elastic surfaces 5 in the vertical direction and the horizontal direction and have an adhesive surface 5 on one side. A double elastic tape 7 having an elastic layer 6 made of a wide sheet-shaped urethane non-woven fabric is provided, and the double elastic pad 1 has the elastic direction of the elastic tape 7 and the elasticity of the elastic pad 1. The absorption layer 2 is attached to the center of the adhesive surface 5 of both elastic tapes 7 while being arranged so that the directions are aligned. When the wound protection material 4 is configured in this way, the wound protection material 4 in which both the elastic pads 1 and the elastic tapes 7 are integrated can be made elastic in the vertical and horizontal directions, and the elbow and the elbow can be made elastic. Even when it is attached to a place where bending and stretching is severe, such as a knee, it is possible to follow and firmly adhere to the skin that expands and contracts in a plurality of directions.

Further, in the wound protective material 4 of the above embodiment, the double elastic tapes 7 are formed in a rectangular shape with the four corners 8 rounded, and gradually reach each other as they approach the intermediate positions on the short sides of the double elastic tapes 7. Since the curved concave portions 9 that approach each other are formed and the curved concave portions 10 that gradually approach each other as they approach the intermediate positions are formed on the long sides of both elastic tapes 7, skin stress generated at the four corners 8 is formed. It becomes possible to disperse and reduce skin troubles.

The double elastic pads of the present invention and the wound protection material using both elastic pads are not limited to the above-mentioned morphological examples, and various modifications can be made without departing from the gist of the present invention. Of course.

1 Double elastic pad 2 Absorption layer 3 Net layer 4 Wound protection material 5 Adhesive surface 6 Elastic layer 7 Double elastic tape 8 Four corners 9 Recesses 10 Recesses

Claims (7)

A sheet-like absorbent layer made of a non-woven fabric and a sheet-shaped net layer made of a net attached to one side of the absorbent layer are provided, and both are configured to have elasticity in the vertical direction and the horizontal direction in a plan view. It ’s a telescopic pad,
The vertical 20% modulus is greater than 0N / 19mm and less than 25.3N / 19mm.
The 40% modulus in the vertical direction is in the range larger than 0N / 19mm and smaller than 31.7N / 19mm.
A double telescopic pad characterized in that the 60% modulus in the vertical direction is configured to be larger than 0N / 19mm and smaller than 50.0N / 19mm. The 20% modulus in the vertical direction is in the range of 0.36 N / 19 mm or more and 0.45 N / 19 mm or less.
The 40% modulus in the vertical direction is in the range of 0.50 N / 19 mm or more and 0.72 N / 19 mm or less.
The double telescopic pad according to claim 1, wherein the 60% modulus in the vertical direction is configured to be in the range of 0.76 N / 19 mm or more and 0.90 N / 19 mm or less. The lateral 20% modulus is in the range of 1.5N / 19mm or more and 2.0N / 19mm or less.
The 40% modulus in the lateral direction is in the range of 3.4 N / 19 mm or more and 4.0 N / 19 mm or less.
The double telescopic pad according to claim 2, wherein the 60% modulus in the lateral direction is configured to be in the range of 5.5 N / 19 mm or more and 6.3 N / 19 mm or less. The absorbent layer is a non-woven fabric made of at least one of polyethylene terephthalate, rayon, and polyolefin.
The method according to any one of claims 1 to 3, wherein the net layer is a net made of at least one of a styrene-based elastomer, a polyurethane resin, a polyurethane-based elastomer, a polyolefin-based elastomer, and a polyester-based elastomer. Both elastic pads. The double elastic pad according to any one of claims 1 to 4, which is formed in a rectangular shape and has elasticity in the short surface direction and the long surface direction. The double telescopic pad according to any one of claims 1 to 5, and the telescopic pad.
It is provided with both elastic tapes that are elastic in the vertical and horizontal directions, have an adhesive surface on one side, and have an elastic layer made of a sheet-like urethane non-woven fabric wider than both elastic pads.
The both elastic pads are arranged so that the elastic direction of the elastic tape and the elastic direction of the elastic pad are aligned, and the absorbent layer is located at the center of the adhesive surface of the elastic tape. A wound protection material characterized by being affixed. Both elastic tapes are formed in a rectangular shape with rounded four corners, and curved recesses are formed on each short side of the elastic tapes so as to gradually approach each other as they approach an intermediate position. The wound protection material according to claim 6, wherein curved concave portions are formed on each long side of the surface so as to gradually approach each other as the intermediate position is approached.

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