JP4181934B2 - Knee adhesive - Google Patents

Description

  The present invention relates to an adhesive member for a knee. Specifically, the present invention relates to an adhesive member for a knee part used for fixing a knee part in sports or body trimming.

  Conventionally, many people have been suffering from pain generated in joints such as knees, elbows, and wrists. Since joints are deeply involved in human movements, daily pains often become difficult when pain occurs at these sites. In particular, when pain occurs in the knee joint, it may lead to gait disturbance and become bedridden, causing serious problems not only physically but also mentally. One cause of pain in the joint is due to deformation and wear of the articular cartilage. If the muscle strength around the joint is reduced due to aging or if sports are excessive, or if weight is applied due to obesity or the like, the deformation and wear of the knee joint cartilage progresses. As mentioned above, pain in the knee joint causes serious problems, but in the current aging society, excessive exercise due to health consciousness, and increased obesity due to changes in dietary habits, pain in the knee joint The population with is increasing. For this reason, there is a strong demand for measures to alleviate the pain that occurs in the knee joint, and various measures are currently being studied.

  Pain in the joints includes pain relief, drug treatment such as muscle relaxants, drug treatment with local injections, physical therapy to extinguish and relieve pain by laser, interference wave, microwave, etc., osteotomy and total joint replacement It can be reduced by surgery. In addition, pain can be reduced by fixing the joint by taping. Taping in the present invention is fixing an application part such as a joint part or muscle using an adhesive tape or the like. By supporting, correcting, reinforcing, etc. this application part, pain can be reduced or treatment can be performed. There is an effect to promote. Taping using adhesive tape that can be easily obtained at pharmacies, etc. can reduce joint pain more easily and relatively cheaply than pharmacotherapy, physical therapy requiring hospital visits, surgery, etc. It is an effective means.

  However, since taping requires specialized knowledge and it is difficult to acquire taping techniques, the current situation is that he goes to an osteopathic clinic to have a specialized trainer tap. Going to an osteopath for taping is time consuming and labor intensive, and can be physically painful for people who have hurt their joints.

  Also, taping adhesive tapes that are generally available on the market have an adhesive layer on the entire surface, and the adhesive tape is also wrapped around the inner part of the joint that is sensitive to stimuli in order to compress and fix the joint part. There was a sense of incongruity or discomfort associated with the bending motion. In addition, since the adhesive layer is in close contact with the inner part of the joint where there is a lot of spontaneous sweating, there is a problem that the skin surface of this part is steamed and skin irritation occurs.

  Japanese Patent Application Laid-Open No. 8-66418 discloses a knee joint supporter having a pad for filling a space generated between the knee joint when the knee joint is mounted. This knee joint supporter can be easily worn even by those who do not have specialized knowledge, and since it does not consist of adhesive tape, discomfort to the inner part of the joint due to sticking of the adhesive tape occurs. However, the joint portion could not be sufficiently fixed because it was not made of an adhesive tape.

  Japanese Patent Laid-Open No. 2002-35196 discloses a body adhesive cloth in which a number of longitudinal slits that are long in the longitudinal direction of an adhesive tape that can expand and contract in the longitudinal direction are formed in parallel in the width direction. Those who do not have taping expertise cannot be used easily.

JP-A-2002-330991 discloses an adhesive tape having a non-adhesive part in a part of the adhesive layer. Since this adhesive tape is attached with the non-adhesive part applied to the inner part of the joint, it can reduce the sense of incongruity associated with bending and stretching movements and the stuffiness caused by natural sweating, and it is easy even without specialized knowledge. Taping can be performed. However, as a sticking operation, while holding the non-adhesive part applied to the inner part of the joint with one hand, it is necessary to stick the tape part having the adhesive with the other hand so as to surround the knee joint, It lacked the convenience of operation. In addition, for the convenience of the sticking operation, when the end of one adhesive tape is temporarily fixed and then officially fixed, it is pasted twice and the original adhesiveness of the adhesive tape may not be expressed. In addition, temporary fixing of the adhesive tape also leads to damage of the keratin of the skin, and it cannot be attached quickly and easily, and is not convenient.
JP-A-8-66418 Japanese Patent Laid-Open No. 2002-35196 JP 2002-330991 A

  Therefore, in view of the above problems, the present invention can fix the knee joint quickly and easily even if it is a person who does not have taping expertise, and there is no sense of incongruity in the inner part of the knee joint. An object of the present invention is to provide an adhesive member for a knee that is less susceptible to skin irritation. Moreover, it aims at providing the method of fixing a knee joint using this adhesive member for knee parts.

  The pressure-sensitive adhesive member for knee of the present invention is U-shaped and the angle formed by the curved base of the U-shape is 120 degrees or less, or has an elliptical ring shape having a slit for cutting a part of the ring. The angle formed by the short side of the elliptical ring recess is 120 degrees or less, and has an expansion and contraction fixing member and an adhesive layer.

  Here, the hysteresis when the knee adhesive member is stretched 80% is preferably 85% or more.

  Further, the knee pressure-sensitive adhesive member preferably has a tensile stress of 10 N / 19 mm width or less when stretched 20% and a tensile stress of 15 N / 19 mm width or more when stretched 80%.

  The stretch fixing member may be made of a stretch knitted fabric.

  Here, the expansion / contraction fixing member may further include a polyurethane layer.

  As described above in detail, according to the knee adhesive member of the present invention, even a person who does not have taping expertise can tap the knee joint quickly and easily. Moreover, there is no sense of incongruity in the inner part of the knee joint, there is little skin irritation due to stuffiness, etc., a comfortable wearing feeling can be realized, and pain in the knee can be reduced. By performing taping based on the taping method of the present invention, the knee pain caused by aging, exercise, or the like can be reduced by sticking to the knee and fixing the knee joint.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same constituent elements are denoted by the same reference numerals, and the description thereof is omitted.

  1A and 1B are diagrams showing a knee pressure-sensitive adhesive member according to a first embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a perspective view. Here, the U-shaped knee adhesive member will be described. In FIG. 1A, the knee adhesive member 1 has a substantially rectangular outer shape, and a punched portion 2 is formed so that the member itself is substantially U-shaped (horse-shoe-shaped) at the substantially center of the rectangular shape. ing. The punched portion 2 has a U-shaped curved bottom 3, U-shaped sides 4, 4 ′, and a U-shaped opening 8. The angle θ formed by the U-shaped curved base 3 is 120 degrees or less. When θ exceeds 120 degrees, when sticking so as to surround the kneecap, the portion A in FIG. 1 may float, and the knee joint may not be sufficiently fixed. Here, the angle θ formed by the U-shaped curved base 3 is the boundary point (B, B ′) between the curved bottom and the U-shaped side when the curved bottom 3 is formed by a curved line. It can be represented by an angle formed by a tangent (a, a ′) of an appropriate point (for example, C, C ′) between the vertex A. However, in order to select an appropriate point on the curve, the curved portion near the curved vertex A is excluded. The shape of the curved base 3 is not limited to two sides of a triangle, a curved curve, and the like, and should be a side of a trapezoid, a polygon, an ellipse, etc. as long as θ is within a range satisfying 120 degrees or less. You can also. Moreover, although the external shape of the adhesive member 1 for knees shown in FIG. 1 is substantially rectangular shape, it is not limited to rectangular shape (substantially rectangular shape), For example, in the range which does not inhibit the effect of this invention, for example, trapezoid Further, it may be a polygon such as a pentagon or a hexagon, an ellipse or the like.

The U-shaped side 4 and the U-shaped side 4 'face each other substantially in parallel, and in use, these sides are attached so as to sandwich the patella. Here, the U-shaped side edges 4 and 4 ′ are linear, but may be substantially linear, curved, or polygonal. The opening width W _{1 of} both sides formed by punching is preferably an appropriate size for sandwiching the patella, for example, preferably in the range of W ₁ = 0.5 cm to 9 cm, more preferably W ₁ = Within the range of 1.0 cm to 3.5 cm, it is appropriately selected in consideration of the body shape of the user.

  The knee adhesive member 1 includes tape portions 6, 6 ′ including U-shaped sides 4, 4 ′ and a U-shaped curved bottom 3, U-shaped end portions 5, 5 ′ located in the U-shaped opening 8, And it is comprised from the connection part 7 which connects the tape part 6 and tape part 6 '. In the embodiment shown in FIG. 1, one U-shaped end portion 5 and the other U-shaped end portion 5 ′ of the knee adhesive member 1 are inwardly protruded to the punched U-shaped opening 8. Although it is curved, it may have a shape such as the tape portions 6 and 6 ′ extended without being curved. The tape portion 6 and the tape portion 6 ′, and the U-shaped end portion 5 and the U-shaped end portion 5 ′ may be axisymmetrical or different, but when the U-shaped end portions 5 and 5 ′ are overlapped, It is preferable that the shape be able to surround the circumference of the kneecap.

The size or the like of the knee adhesive member 1 is preferably designed in consideration of the user's body shape and the like. For example, the length of the short side of the substantially rectangular outer shape is the tape portion 6 or 6. 'Can be attached above and below the patella and is preferably of a length suitable for reinforcing and fixing the upper and lower parts of the patella. It is preferable that the length can be adhered to the left side and the right side, the side of the knee joint can be reinforced and fixed, and the length does not reach the inner part of the knee joint that is sensitive to skin irritation. The lengths of the tape part 6 and the tape part 6 ′ are preferably long enough to surround the kneecap when the U-shaped end parts 5 and 5 ′ are overlapped. Further, the width L ₁ of the connecting portion 7 (distance L ₁ between the U-shaped apex A and the short right side of the rectangular shape) needs to be long enough for the connecting portion 7 to fix the right side of the knee joint. It is preferable that the length is designed so as not to reach the inner joint part.

For example, when it is assumed that an adult having a general body shape is used, L ₁ is preferably in the range of 2.5 cm to 10 cm, and L ₂ is preferably in the range of 5 cm to ₂₀ cm. , W ₁ is preferably in the range of 0.5 cm to 9 cm.

  The knee pressure-sensitive adhesive member 1 needs to have an appropriate kickback property, and therefore has a stretchable fixing member that can fix the knee. The knee pressure-sensitive adhesive member of the present invention has an appropriate kickback property, and has a hysteresis of 85% or more at 80% elongation. Further, the knee pressure-sensitive adhesive member of the present invention preferably has a tensile tension at 20% elongation of 10 N / 19 mm width or less, more preferably 9 N / 19 mm width or less, and a tensile stress at 80% extension of 80%. The width is preferably 15 N / 19 mm or more. Such a knee pressure-sensitive adhesive member can realize followability to the joint and fixation. In order to further reduce the burden on the joint, it is more preferable that the hysteresis at 80% elongation is 88% or more and the tensile stress at 80% extension is 16 N / 19 mm width or more.

  Here, the hysteresis at the time of 80% extension is an index indicating the restoration property when the knee adhesive member is extended to 80% of the maximum extension. Further, the tensile stress at 20% elongation refers to the tensile strength when a sample piece having a predetermined shape is stretched at a predetermined speed until it is stretched by 20%. The tensile stress at 80% elongation is a sample having a predetermined shape. The tensile strength when a piece is pulled at a predetermined speed until it is stretched 80%.

  FIG. 1B illustrates a layer configuration of the knee adhesive member 1. In FIG. 1B, the knee adhesive member 1 is composed of an elastic fixing member 11 and an adhesive layer 12, and the elastic fixing member 11 is provided with a polyurethane layer 14 on a base material 13. Although the polyurethane layer 14 may not be provided, moisture permeability and waterproofness can be imparted by covering the upper surface of the substrate 13 with the polyurethane layer 14.

  The base material preferably has an appropriate degree of elongation so that the joint portion can be fixed. For example, a nonwoven fabric made of nylon, polyester, polyurethane, rayon, polypropylene, polyethylene, cotton, etc., a woven fabric, and a natural stretch material Examples thereof include a rubber-based or synthetic rubber-based sheet having moisture permeability, a warp stretch fabric using stretch yarns for warp, and a stretch fabric using stretch yarns for warp and weft. In the present invention, it is preferable to use a knitted fabric having stretchability (hereinafter referred to as “stretchable knitted fabric”). For example, a stretch made by applying special processing to a fiber such as nylon or polyester. A knitted fabric knitted with a highly elastic synthetic yarn such as yarn or polyurethane elastic yarn, or a mixture of such a synthetic yarn and a low elastic fiber such as polyester fiber or cotton. A knitted fabric or a spunbonded nonwoven fabric knitted with stretchable yarn such as polyurethane can be used. As a knitting method, any of warp knitted fabrics including tricot knitting, Raschel knitting, and Milanese knitting, and weft knitting including flat knitting and circular knitting may be used. Among these, the fate is more preferable because fraying does not occur even if it is cut. Moreover, it is preferable that the thickness of synthetic fiber is about 40-160 denier.

  The thickness of the substrate 13 is preferably determined as appropriate depending on the material properties of the substrate, but is preferably 0.2 to 1.0 mm, more preferably 0.3 to 0 in consideration of the followability to the skin. .8 mm.

  The polyurethane layer 14 is formed from a known urethane such as an ether urethane or an ester urethane. In the present invention, a polyurethane film can be used as the polyurethane layer. The thickness of the polyurethane layer 14 is preferably 5 μm or more and less than 30 μm. If the thickness of the polyurethane layer is 5 μm or more, for example, unevenness on the surface of the base material such as a stretchable knitted fabric can be sufficiently coated, so that no pinhole is generated, and the thickness of the polyurethane layer is less than 30 μm. If it exists, sufficient moisture permeability can be maintained.

  For example, if the surface of the base material with irregularities on its surface is stuck on the back surface, the end of the adhesive member that has been stuck on may be turned over, but by covering the uneven surface with a polyurethane layer, adhesion to the back surface is possible. Can be improved. Moreover, in the case of a base material with poor waterproofness, the adhered part may be peeled off when it is used in wet weather and wetted with water, but waterproofness can be imparted by providing a polyurethane layer. Furthermore, the degree of kickback property can be adjusted by adjusting the thickness of the polyurethane layer.

  The pressure-sensitive adhesive layer 12 is preferably formed using a pressure-sensitive adhesive that has flexibility and viscoelasticity that can follow the attached skin and is less irritating to the skin. It is possible to use various pressure-sensitive adhesives that are well-known or practically used. Specifically, acrylic adhesives, rubber adhesives, synthetic rubber adhesives, vinyl ether adhesives, silicone adhesives, gel adhesives can be used, but considering skin irritation and the like, It is preferable to use an acrylic adhesive or a gel adhesive. For example, oil-based gel pressure-sensitive adhesive has a relatively low adhesive force, but it has excellent adhesion to the skin and is sufficient for taping and other applications, and does not damage the skin surface when it is peeled off. It can be preferably used. For the gel-based pressure-sensitive adhesive, see JP-T 2000-513287.

  The adhesive layer 12 may be provided on the entire surface of one side of the stretchable fixing member 11 or may be provided partially. In the case where the adhesive layer is partially provided on the base material surface of the stretchable fixing member 11, the adhesive layer can be formed in a dot shape or a strip shape, and the region where the adhesive layer is not formed also functions as an air passage. The breathability and moisture permeability of the knee pressure-sensitive adhesive member can be improved, and stuffiness or fogging due to sweating can be prevented. Examples of the stripe shape include a straight shape and a wave shape. In general, it is preferable that the cross-sectional area of the interstitial space has a wavy shape with little change over time, but it is preferable to appropriately determine it depending on the characteristics of the pressure-sensitive adhesive to be used. In addition, when the adhesive layer is partially provided on the substrate surface, the size and arrangement of dots, the size of the space between the stripes, etc. are appropriately designed so as to ensure a space that functions as an air passage between the stripes. It is preferable to do.

  When applying a pressure-sensitive adhesive to a desired area, for example, a comb-shaped mold is used on the release liner to fix the comb during application, or to move the amplitude, so that a desired stripe shape or What is necessary is just to form the adhesive layer which has shapes, such as a wave shape, on a peeling liner, and to transcribe | transfer this on the surface of the base material 12 of the expansion-contraction fixing member 11. FIG.

  The thickness of the pressure-sensitive adhesive layer 12 is preferably determined as appropriate depending on the type and characteristics of the pressure-sensitive adhesive used, but is preferably 20 to 400 μm, for example, and more preferably 25 to 200 μm.

  The knee adhesive member 1 may be perforated as necessary as long as the effect of the present invention is not impaired.

  In order to prevent contamination of the surface of the pressure-sensitive adhesive layer 12, it is preferable that the surface of the pressure-sensitive adhesive layer 12 is covered with a release liner until it is used. As this release liner, those generally used for an adhesive tape or the like attached to the skin can be used. Specifically, the surface of high-quality paper, glassine paper, parchment paper, etc., coated with a release agent having a release performance such as silicone, or the high-quality paper coated with a resin anchor or polyethylene laminated What coated the release agent which has peeling performances, such as silicone, on the surface can be used.

  The release liner may be composed of several sheets. For example, three release liners include one tape portion and one U-shaped end portion, the other tape portion and the other U-shaped end portion, and It may be configured to cover each adhesive layer of the connecting portion, and the five release liners are one tape portion, the other tape portion, one U-shaped end portion, the other U-shaped end portion, and In addition, it may be configured to cover each adhesive layer of the connecting portion.

Next, the knee-shaped adhesive member for a knee part having a slit for cutting a part of the ring will be described. FIG. 2 shows a knee pressure-sensitive adhesive member according to a second embodiment of the present invention. Here, a punched portion surrounded by an elliptical ring long side 24, 24 ', an elliptical ring recess short side 23, and an elliptical ring short side 28, 28' is provided at the approximate center of the adhesive member having a substantially rectangular outer shape. 22 is formed. However, the angle θ formed by the elliptical ring recess short side 23 is 90 degrees or less. In FIG. 2, the elliptic ring recess short side 23 is formed of two straight lines. However, the elliptic ring recess short side 23 may be formed of a curved line. In this case, the elliptic ring long side 24 and the elliptic ring It can be represented by an angle formed by a tangent at an appropriate point on the curve between the boundary points (E, E ′) of the short side 23 of the concave portion and the concave vertex G of the short side of the elliptical ring concave portion. In addition, the shape of the elliptical ring concave portion short side is not limited to two straight lines or curved lines. In FIG. 2, the elliptical ring is cut by a slit 29. The elliptical ring long side 24 and the elliptical ring long side 24 ′ have the same functions as the U-shaped side 4 and the U-shaped side 4 ′ in FIG. 1, and are attached so that these sides sandwich the kneecap. . The opening width W _{1 of} both sides formed by punching is appropriately selected in consideration of the body shape of the user within the range of W ₁ = 0.5 cm to 9 cm, like the U-shaped knee adhesive member. It is preferable.

  The knee adhesive member 21 is located in the tape portions 26, 26 'including the elliptic ring long sides 24, 24' and the elliptic ring recess short side 23, and the slit 29, and the ellipse including the elliptic ring short sides 28, 28 '. It is composed of ring end portions 25 and 25 'and a connecting portion 27 that connects the tape portion 26 and the tape portion 26'. The tip ends of the elliptical ring end portions 25 and 25 ′ are also attached to the side surfaces of the knee joint so that the U-shaped end portion 5 and the U-shaped end portion 5 ′ of the U-shaped adhesive member for the knee portion are overlapped and adhered. It is stuck and stuck.

  Each component of the knee adhesive member 21 has the same function as the similar member of the U-shaped knee adhesive member 1 unless otherwise specified. The layer configuration has the same configuration as the U-shaped knee adhesive member 1.

  An example of the method of using the knee adhesive member of the present invention will be described below in the case where the U-shaped knee adhesive member 1 shown in FIG. 1 is applied to a knee joint.

  FIG. 3 is a diagram illustrating a method (an example) of fixing a knee joint using the knee adhesive member 1 according to the first embodiment of the present invention.

  In FIG. 3A, the release liner covering the adhesive layer of the connecting portion 7 is removed, and the connecting portion 7 is attached to the side portion of the kneecap 31 along the patella. Next, after removing the release liner covering the adhesive layer of the tape portion 6 ', the U-shaped end portion 5' is stretched by pulling and sticking along the patella so as to surround the kneecap 31 on the side of the knee joint. To do. Next, the release liner covering the adhesive layer of the U-shaped end portion 5 ′ is removed and attached. Thereafter, similarly, as shown in FIG. 1B, the tape portion 6 and the U-shaped end portion 5 are adhered. The U-shaped end portion 5 is stuck on the U-shaped end portion 5 ′ that has already been pasted.

  By sticking in this way, even a person who does not have taping expertise can easily tap the tape at an appropriate position, and can fix the knee joint or the like to reduce knee pain.

  Also for the knee adhesive member 21 shown in FIG. 2, the knee can be fixed by taping in the same manner as described above. That is, the release liner covering the adhesive layer of the connecting portion 27 is removed, the elliptical ring end 25 ′ is pulled, the elliptical ring long side 24 ′ is attached to the lower part of the kneecap 31, and then the elliptical ring end 25 At the side of the knee joint, the tape portion 26 ′ is attached along the patella so as to surround the kneecap 31. Next, the elliptical ring end portion 25 and the tape portion 26 are similarly attached. In addition, the other elliptical ring end part 25 is stuck on the elliptical ring end part 25 ′ that has already been stuck.

Examples of the present invention will be described below and will be described in more detail. However, the present invention is not limited to these examples, and various applications are possible without departing from the technical idea of the present invention.
(Example 1)

  An acrylic pressure-sensitive adhesive was obtained by copolymerizing a mixture of 90 parts by weight of 2-ethylhexyl acrylate and 9 parts by weight of acrylic acid with ethyl acetate under an inert gas atmosphere. This acrylic pressure-sensitive adhesive was applied to a treated surface of a release liner obtained by applying silicone treatment to a surface of polyethylene laminated on high-quality paper so that the thickness after drying was 80 μm, and dried at 120 ° C. for 3 minutes. An adhesive layer was formed. On this adhesive layer, a stretchable knitted fabric with a thickness of 450 μm, in which polyester 75 denier yarn prepared as an elastic fixing member is knitted so as to expand and contract with a smooth knitting, is laminated and bonded together, so that an elastic fixing member / adhesive layer / A laminate having a layer structure of release liner was obtained.

The obtained laminate was punched to obtain a knee pressure-sensitive adhesive member having a shape as shown in FIG. However, the rectangular shape of the outer shape is 100 mm in length and 195 mm in width, the length (L ₂ ) from the end of the U-shaped end to the U-curved vertex is 145 mm, and the angle formed by the U-shaped curved base ( θ) was 45 °.
(Example 2)

  A stretchable fixing member was formed by dry laminating a 10 μm thick polyester-based urethane film on a 450 μm thick stretchable knitted fabric in which polyester 75 denier yarn was knitted to stretch smoothly. Next, an oily gel pressure-sensitive adhesive is applied to the treated surface of a release liner obtained by applying silicone treatment to a surface of polyethylene laminated on high-quality paper so that the thickness after drying becomes 70 μm, and dried at 120 ° C. for 3 minutes. Thus, an adhesive layer was formed. By laminating this adhesive layer and the stretchable fixing member, a laminate having a layer configuration of stretchable fixing member (polyester urethane film / stretchable knitted fabric) / adhesive layer / release liner was obtained.

The obtained laminate was punched to form a knee adhesive member having a shape as shown in FIG. However, the rectangular shape of the outer shape was 110 mm in length and 240 mm in width, the length (L ₂ ) of the punched portion was 180 mm, and the angle θ formed by the U-shaped curved base was 80 °.
(Example 3)

  A stretchable fixing member was formed by dry laminating a 20 μm thick polyether-based urethane film on a 450 μm thick stretchable knitted fabric in which polyester 75 denier yarn was knitted so as to stretch and contract smoothly. Next, the surface of the release liner, which is obtained by laminating polyethylene on high-quality paper and treated with silicone, is coated with a comb-shaped mold so that the oily gel adhesive has a thickness of 70 μm after drying. The strip-like adhesive layer was formed by applying an undulation and applying it in a wavy shape and drying at 120 ° C. for 3 minutes. Furthermore, the laminated body which has a layer structure of an expansion / contraction fixing member / adhesion layer / release liner was obtained by bonding this adhesion layer and said expansion / contraction fixing member.

The obtained laminate was punched to form a knee adhesive member having a shape as shown in FIG. However, the rectangular shape of the outer shape was 110 mm in length and 240 mm in width, the length (L ₂ ) of the punched portion was 180 mm, and the angle (θ) formed by the U-shaped curved base was 30 °.
Example 4

  A stretchable fixing member was formed by dry laminating a 20 μm polyether urethane film on a stretchable knitted fabric having a thickness of 450 μm in which polyester 75 denier yarn was knitted so as to be stretched and contracted smoothly. Next, on the treated surface of the release liner that has been treated with silicone on the surface of polyethylene laminated on high-quality paper, use a comb-shaped mold so that the thickness after drying the oil-based gel adhesive is 70 μm. And then dried at 125 ° C. for 5 minutes to form a strip-like adhesive layer. Furthermore, the laminated body which has a layer structure of an expansion / contraction fixing member / adhesion layer / release liner was obtained by bonding this adhesion layer and said expansion / contraction fixing member.

The obtained laminate was punched to form a knee adhesive member having a shape as shown in FIG. However, the rectangular shape of the outer shape was 110 mm in length and 240 mm in width, the length (L ₂ ) of the punched portion was 170 mm, and the angle (θ) formed by the short side of the concave portion of the elliptical ring was 45 °.
(Comparative Example 1)

In Example 2, a laminate was formed in the same manner as in Example 2 except that instead of the expansion and contraction fixing member, a thick 730 μm thick strong twisted fabric, which is generally known as a sports taping tape, was used. The resulting laminate is punched in the same manner as in Example 2 except that the angle formed by the U-shaped curved base is changed to 60 °, and a knee pressure-sensitive adhesive member having a shape as shown in FIG. 1 is obtained. It was. However, the angle θ formed by the bottom of the U-shaped curve in the obtained knee adhesive member is 60 °, and the tensile stress when the knee adhesive member is stretched by 20% is 15 N / 19 mm width and when stretched by 80%. The tensile stress when the hysteresis was 50% and 80% stretched was 10 N / 19 mm width.
(Comparative Example 2)

A laminate was formed in the same manner as in Example 1. In the same manner as in Example 1, the obtained laminate was punched into a shape similar to the shape of FIG. A member was obtained.
(Comparative Example 3)

A laminate was formed in the same manner as in Example 2. The obtained laminate was punched in the same manner as in Example 2 to obtain a V-shaped adhesive member having a shape as shown in FIG. 4, the width _{L 1} of the connecting portion 37 is 30 mm, a line symmetrical figure tape portion 36 and the tape portion 36 'and the end portion 35 and the end portion 35', _{L 2} is 200 mm, the length of the tape portion It is _{L 3} is 150 mm, the width _{W 2} of the tape unit is 60 mm, the angular θ is 45 ° formed by the tape portion 36 and the tape portion 36 ', subjected to punching so as to have such a shape.

  The above-mentioned adhesive members for knees shown in Examples 1 to 4 and Comparative Examples 1 to 3 were affixed to the knee joints of 20 volunteers aged 30 or older, and the characteristics shown below were measured and evaluated. . The results are shown in Tables 1 to 4.

<< Measurement method and evaluation method >>
(1) Tensile stress at 20% elongation A sample piece having a width of 19 mm and a length of about 100 mm was taken, and a marked line was placed at a 50 mm length point. This sample piece was pulled at a tensile speed of 300 mm / min, and the tensile stress (unit: N / 19 mm width) when the sample piece was pulled 20% was measured.

(2) Hysteresis at 80% extension (restoration rate at 80% extension)
One hour after the release liner was removed from the adhesive tape, a sample piece having a width of 19 mm and a length of about 100 mm was taken in the longitudinal direction, and a marked line was placed at a 50 mm length point. The sample piece was pulled at a speed of 300 mm / min, and the amount of elongation when the sample piece was fully extended was determined by the following equation.

Elongation when fully extended (mm) =
Marking distance when extended to the maximum (mm) -50mm

Next, the sample piece prepared in the same manner is pulled, and only 80% of the length of the maximum length obtained by the above formula is stretched at a pulling speed of 300 mm / min. Return to the state before pulling. This operation was repeated 5 times. Further, the subsequent residual strain length was measured, and the restoration rate (%) was determined by the following equation. A Tensilon tensile tester is used. However, in the formula, X is the amount of elongation at maximum elongation × 0.8 (mm). The residual strain length is obtained by calculating the length (mm) of the portion where the stress of the fifth hysteresis is 0.1 N / 19 mm width or less.

Restoration rate at 80% elongation (%) = {(X−residual strain length (mm)) / X} × 100

(3) Tensile stress at 80% elongation A sample piece having a width of 19 mm and a length of about 100 mm was taken and a marked line was placed at a 50 mm length point. The sample piece was pulled at a tensile speed of 300 mm / min, and the tensile stress (unit: N / 19 mm width) when the sample piece was pulled 80% was measured.

(4) Angle (θ)
In the case of a U-shape as shown in FIG. 1, the angle θ formed by the U-shaped curved base 3 is the boundary point between the curved bottom and the U-shaped side when the curved bottom 3 is formed by a curve. It is shown by an angle formed by a tangent (a, a ′) of an appropriate curved point (for example, C, C ′) between (B, B ′) and the curved vertex A of the curved base. In the case of the elliptical ring type as shown in FIG. 2, the angle formed by the two straight lines of the elliptical annular recess short side 23 is used as the angle formed by the elliptical recess recess short side.

(5) Knee joint pain relief effect For 20 volunteers, “Knees are much easier”, “Knee pains are less” and “Knee feel lighter” than when taping was not performed. It was evaluated in four stages, “I was not changed”. Table 2 shows the number of people in each evaluation stage. In addition, among the above-mentioned evaluation stages, the stages of “Knee has become much easier”, “Knee pain has been reduced” and “Knee feels lighter” have been reduced to reduce joint pain. It was judged that there was an effect on this, and the proportion of this total number of people was the effective rate. The effective rate is also shown in Table 2.

(6) Wearing feeling Twenty volunteers evaluated the wearing feeling in four levels: “very comfortable”, “no problem”, “feeling uncomfortable”, and “very uncomfortable”. Table 3 shows the number of people in each evaluation stage. Further, among the above evaluation stages, the stage of “very comfortable” and “no problem” is judged as having a good wearing feeling, and the ratio of the total number of persons is regarded as the effective rate. This effective rate is also shown in Table 3.

(7) Operability Twenty volunteers evaluated the operability in four levels: “easy to stick”, “no problem”, “difficult to stick”, and “very difficult to stick”. Table 4 shows the number of people in each evaluation stage. Further, among the above evaluation stages, the “easy to paste” and “no problem” stages are judged to have good operability, and the total number of persons is set as the effective rate. This effective rate is also shown in Table 4.

  As is apparent from Tables 2 to 4, the knee adhesive members of Examples 1 to 4 have a high effectiveness rate in all evaluations, are effective in reducing the pain of the knee joint, and have a feeling of wearing and operability. Was also found to be good.

  On the other hand, for the knee part of Comparative Example 1 having no telescopic fixing member, Comparative Example 2 having an angle θ larger than 120 °, and Comparative Example 3 having a V-shape that is neither U-shaped nor elliptical ring-shaped The effectiveness of the adhesive member was low in all evaluations.

It is a figure which shows the viscous member for knee parts which concerns on the 1st Embodiment of this invention, (a) is the top view, (b) is the perspective view. It is a top view which shows the adhesive member for knee parts which concerns on the 2nd Embodiment of this invention. It is a figure for demonstrating the method which taps a knee joint part using the adhesive member for knee parts concerning the 1st Embodiment of this invention. 10 is a plan view showing an adhesive member of Comparative Example 3. FIG.

Explanation of symbols

1, 21 Knee adhesive member 2, 22 Punched part 3 U-shaped curved base 4, 4 'U-side 5, 5, U-shaped end 6, 6', 26, 26 'Tape part 7, 27 Connection Part 8 U-shaped opening 11 Stretchable fixing member 12 Adhesive layer 13 Base material 14 Polyurethane layer 23 Elliptical ring recess short side 24, 24 'Elliptical ring long side 25, 25' Elliptical ring end 28, 28 'Elliptical ring short side 29 Slit 31 Knee head A Curved vertex B, B 'Boundary point C, C' Point D, D ', E, E', F, F 'on the curved base Boundary point G Recessed vertex of elliptical ring

Claims (6)

An adhesive member for a knee, which is U-shaped, has an angle formed by a U-shaped curved base of 120 degrees or less , and has an expansion / contraction fixing member and an adhesive layer. An annular shape having a slit for cutting a part of the ring, and has a punched portion having two parallel long side portions and a concave portion composed of two short side portions, and the two short sides A knee pressure-sensitive adhesive member, characterized in that an angle formed by the portion is 90 degrees or less, and has a stretchable fixing member and a pressure-sensitive adhesive layer. The knee adhesive member according to claim 1 or 2, wherein the hysteresis at 80% elongation is 85% or more. 4. The knee pressure-sensitive adhesive member according to claim 3 , wherein the tensile stress at 20% elongation is 10 N / 19 mm width or less and the tensile stress at 80% elongation is 15 N / 19 mm width or more. The knee stretchable adhesive member according to any one of claims 1 to 4 , wherein the stretchable fixing member comprises a stretchable knitted fabric. 6. The knee adhesive member according to claim 5 , wherein the elastic fixing member further includes a polyurethane layer.

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