JPH0717301Y2 - Elastic adhesive tape - Google Patents

Description

[Detailed description of the device]

[0001]

This invention is applied to the inside or outside of the joint for the purpose of helping the flexion and extension of the joint in the arm, leg and finger of the human body, or wound around the joint for the purpose of fixing the joint. The present invention relates to a stretchable adhesive tape for.

[0002]

2. Description of the Related Art As an elastic adhesive tape for sticking to the inside or outside of a joint or wrapping around a joint as described above, an elastic fiber thread such as spandex is covered with ordinary textile fibers for expansion and contraction. Using the elastic yarn as the warp and the longitudinally woven fabric using the ordinary textile fiber yarn as the weft as the base fabric,
A stretchable pressure-sensitive adhesive tape in which a pressure-sensitive adhesive layer is provided on one surface of this base cloth is known.

[0003]

However, the above-mentioned stretchable adhesive tape based on the vertically stretched woven fabric has stretchability in the length direction but no stretchability in the width direction. The tape cannot follow the change in the thickness of the muscle when it is attached to a joint and bent, and therefore the edge of the tape peels off and rises, and the spandex yarn is covered with textile fibers. Since the expansion and contraction of the spandex yarn is limited by the textile fibers of the coating layer, the elongation and elastic elasticity of the adhesive tape are reduced, and therefore the force to assist the bending and stretching of the joint is insufficient, and the bending and stretching of the joint is performed. There was a problem that it was easy to peel off when doing.

The present invention has a large elasticity in both the length direction and the width direction, and expands and contracts in accordance with flexion and extension of the joint, and has a large elastic elasticity, which is excellent in the action of assisting the flexion and extension of the joint. The present invention provides a pressure-sensitive adhesive tape.

[0005]

The stretchable adhesive tape of the present invention is a stretchable pressure-sensitive adhesive cloth having a pressure-sensitive adhesive layer on one side of a Russell knitted fabric composed of non-stretchable synthetic fiber yarns and elastic fiber yarns. Cut along the wales and composed of the above-mentioned non-stretchable synthetic fiber yarns every other wale, the first reed structure and the first reed structure.
2 Reed tissue meanders left and right symmetrically across several wales to form a net with chain knits as pillars, and the above elastic fiber yarns are inserted in each wale , in the longitudinal and transverse directions. It is characterized by having elasticity in the direction.

The elastic fiber yarn is a synthetic fiber yarn having expansion and contraction elasticity such as spandex. The Russell knitted fabric in which this elastic fiber yarn is inserted has a thickness of the elastic fiber yarn,
The expansion and contraction characteristics of the knitted fabric vary depending on the arrangement density and the magnitude of the tension set during knitting, but the thickness of the spandex yarn used in this invention is preferably in the range of 140 to 420 denier. Further, the array density of the spandex yarn is preferably 9 to 18 threads / inch.

In the Russell knitted fabric, the width at the elongation of 30% in the wale direction (direction perpendicular to the pulling direction is adjusted by adjusting the thickness of the elastic fiber yarns, the arrangement density, and the tension during knitting. It is preferable that the tightening force is set to 60 to 85 g per 2.54 cm, and the tightening force is set to 30 to 50 g per width 2.54 cm when the elongation in the course direction is 30%. However, the above-mentioned tightening force is obtained when a sample tape having a width of 2.54 cm is stretched at a speed of 300 mm / min until the elongation reaches 80%, and then contracted at the same speed to recover the elongation to 30%. Defined by tension.

Further, the non-stretchable synthetic fiber yarn interwoven with the above spandex yarn is preferably a multifilament yarn of 30 to 100 denier. The above yarn may or may not have a crimp. Also, the adhesive applied to the back of the Russell knitted fabric is
Acrylic and rubber adhesives are preferred. In addition,
As the adhesive, those having air permeability are particularly preferable.
The coating thickness (dry) is preferably 20 to 80 μm.

[0009]

The elastic tape is a net whose pillar is a chain knit of a non-stretchable synthetic fiber yarn, and the elastic fiber yarn is inserted along the chain knit, so that the direction of the chain knit, that is, the elastic tape. Has a large elongation and elastic elasticity in the length direction, and does not shrink in width when it is expanded in the length direction. And
1st reed with elastic tape meandering left and right as above
Ri net der consisting tissue and second reed tissue, the first
Order to cross reed tissue and the second reed tissue at regular intervals,
Two adjacent chain knits are connected by a sinker loop of the above-mentioned non-stretchable synthetic fiber yarns at regular intervals to form a long hole between the two chain knits, and one chain knit The sinker loops on both sides of the are arranged in a zigzag pattern offset by half the pitch above and below each other.Therefore, when the stretchable tape is stretched in the width direction, the chain knitted joints by the sinker loops are used as fulcrums. The chain knitting before and after the connecting portion is bent, each hole between the chain knitting is deformed into a rhombus, and the chain knitting constituting each side of the rhombus is obliquely stretched, so that a large elongation and elastic elasticity are provided. Demonstrate.

The tightening force per width 2.54 cm at a longitudinal elongation of 30% is 60 to 85 g, and the tightening force per width 2.54 cm at a lateral elongation of 30% is 30.
When each is set to -50 g, the most suitable function under normal use conditions is obtained, and attachment and bending and stretching of joints are facilitated. However, if the spandex yarn thickness is less than 140 denier, or if the array density is less than 9 threads / inch, the elastic elasticity is too small, and the thickness exceeds 420 denier or the array When the density exceeds 18 lines / inch, the elasticity of expansion and contraction becomes excessive, and it is difficult to obtain a desired function in any case. Further, if the coating thickness of the adhesive is less than 20 μ, peeling easily occurs,
If it exceeds 0 μ, the pores between the chain stitches are closed and the air permeability is lowered.

[0011]

EXAMPLES Knitting the Russell knitted fabric 10 of FIG. 1 using polyester multifilament yarn (75 denier) as the non-stretchable synthetic fiber yarn and spandex yarn (140 denier) as the elastic fiber yarn, respectively. did.
That is, the above-mentioned non-stretchable synthetic fiber yarn 11 is passed through every other bar on the first reed of the Russell knitting machine for 20/24/4.
A knitted structure of 2/46/42/24 and knitting a non-stretchable synthetic fiber thread 12 on the second reed in the same manner every other thread
I formed a bilaterally symmetrical organization with the reed. In addition, every other one of the above elastic fiber yarns 13 is passed through the third reed and the 22/00/22
A tissue of / 00/22/00 was inserted, and an elastic fiber thread 14 was inserted through the fourth reed every other row and inserted symmetrically with the third reed. The elastic fiber yarns 13, 14 during knitting
Was set to 20 g.

The obtained knitted fabric 10 is a power net in which elastic fiber yarns 13 or 14 are inserted into each chain knit of a 6-course net, and each one chain knit comprises a non-woven fabric forming the chain knit. The stretcher synthetic fiber yarns 11 and 12 are connected by a sinker loop to the left side chain knitting every 6 courses, and are connected to the right side chain knitting at a position deviated from the connecting portion 15 by 3 courses back and forth. That is, the connecting portion 1 including the sinker loop described above.
5 are arranged in a staggered manner, and elongated holes 16 spanning 5 courses are formed between the connecting portions 15 at the front and rear (upper and lower in the figure).

2-Ethylhexyl acrylate, butyl acrylate, acrylic acid, 2
An acrylic pressure-sensitive adhesive obtained by crosslinking a polymer of hydroxyethyl methacrylate with an isocyanate compound (trade name “Coronate L”, manufactured by Nippon Polyurethane Co., Ltd.) was applied to a thickness of 50 μ (dry), and the coated surface A release paper was attached to, and then slit into a width of 50 mm to obtain the stretchable adhesive tape of Example 1. FIG. 2 is a cross-sectional view of this elastic adhesive tape, in which 20 is an adhesive layer, 21 is a hole formed in the adhesive layer 20, and 30 is a release paper.

21 as the above-mentioned elastic fiber yarns 13 and 14
A stretchable adhesive tape of Example 2 was produced in the same manner as in Example 1 except that 0 denier spandex yarn was used and the knitting tension was set to 20 to 25 g. A stretchable pressure-sensitive adhesive tape of Example 3 was produced in the same manner as in Example 1 except that 280 denier spandex yarn was used and the knitting tension was set to 25 to 28 g.

From the Russell knitted fabric used in Examples 1 to 3 described above, a sample long in the wale direction (warp direction) and a sample long in the course direction (weft direction) were respectively made to have a width of 2.54 cm and a length of 10 cm. It was cut out, attached to an Instron tensile tester, pulled in the longitudinal direction at a speed of 300 mm / min, and the relationship between the load and the elongation until the load reached 2.25 kg was tested. The results are shown in Table 1 below.

Table 1 Example No. 1 2 3 Elongation of warp / weft under load of 1.00 kg (%) 150/89 119/56 87/57 Elongation of warp / weft under load of 1.50 kg (%) 175/105 142 / 69 116/74 Elongation of warp / weft under a load of 2.25 kg (%) 200/120 161/80 140/89

The above sample was pulled at a rate of 300 mm / min until the elongation reached 80%, and the relationship between the load, that is, the extension force and the elongation was tested. The results are shown in Table 2 below.
Shown in.

Table 2 Example No. 1 2 3 Warp / weft extension force at 15% elongation (g) 45/34 64/56 240/350 Warp / weft extension force at 30% elongation (g) 100/140 145 / 188 380/570 Warp / weft extension force at 50% elongation (g) 185/310 246/478 580/870 Warp / weft extension force at 80% elongation (g) 360/780 489/1014 899/1840

Then, after the elongation reaches 80%, the same 3
The elongation was returned at a speed of 00 mm / min, and the relationship between the load at that time, that is, the tightening force and the elongation was tested. The results are shown in Table 3 below.

Table 3 Example No. 1 2 3 Warp / weft tightening force (g) at an elongation of 15% 25/0 35/5 30/0 Warp / weft tightening force (g) at an elongation of 30% 61/35 80 / 50 85/60 Warp / weft tightening force at 50% elongation (g) 110/105 140/180 162/180 Warp / weft tightening force at 80% elongation (g) 360/780 489/1040 899/1840

[0021]

As described above, the elastic adhesive tape of the present invention is a Russell knitted fabric composed of the non-stretchable synthetic fiber yarn and the elastic fiber yarn, and the non-stretchable synthetic fiber yarn is a chain. Since a net having a knit as a pillar is formed and the elastic fiber yarn is inserted along the chain knit, it has great elasticity in both the length direction and the width direction, and can bend and stretch the joint. Following expansion and contraction, and with a large elastic elasticity, it has an excellent action to help flexion and extension of joints.It can be attached vertically to the inside or outside of the joints of the human body to assist in flexion and extension of muscles, or wrapped around joints It is suitable for use in fixing joints.

[Brief description of drawings]

FIG. 1 is an organization chart of a knitted fabric according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an example.

[Explanation of symbols]

 10: Knitted fabric 11, 12: Non-stretchable synthetic fiber yarn 13, 14: Elastic fiber yarn 15: Connection part of adjacent chain knitting 16: Long hole between chain knitting 20: Adhesive layer 21: Adhesive Layer holes 30: Release paper

Claims (2)

[Scope of utility model registration request] 1. A non-stretchable non-stretchable cloth obtained by cutting a stretchable pressure-sensitive adhesive cloth having a pressure-sensitive adhesive layer on one side of a Russell knitted fabric made of non-stretchable synthetic fiber yarns and elastic fiber yarns along a wale. Reed every 1 wale consisting of synthetic fiber yarn
And the second reed organization snakes bilaterally across several wales
Form a net with a chain knit as a pillar, for each wale
It said elastic fiber yarn and is inserted, elastic adhesive tape and having a stretchability in the longitudinal and transverse directions. 2. The tightening force when the elongation in the wale direction is 30% is 60 to 85 g per width 2.54 cm, and the tightening force when the elongation in the course direction is 30% is 30 to 50 g per width 2.54 cm. The stretchable adhesive tape according to 1.