JP2007151663A - Soft supporter, and manufacturing method for french pile for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soft supporter which keeps a main body hardly deformable even if attachment to or detachment from a male member of a hook-and-loop-fastener is repeated and which can be stably fitted to a proper region, and a manufacturing method for French pile for the soft supporter. <P>SOLUTION: This soft supporter is mounted by engaging the male member of the hook-and-loop-fastener with the French pile as an outer material of a main body. The main body, has a flexibility of 60-140 mm when measured by a cantilever method specified in JIS L1096, and a curl angle of 60° or less which is made in an engaged part when the male member having a width-direction tensile shear strength of 6.0-8.0 N/cm<SP>2</SP>when engaged with the French pile as the outer material, and a peel strength of 2.0-3.5 N/cm, is pressed against the French pile as the outer material under a load of 0.5±0.2 N/cm<SP>2</SP>, and attachment/detachment is repeated five-hundred times. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a supporter attached to a human body in the fields of medicine and sports.

  In the medical and sports fields, supporters are used for the purpose of fixation, protection, etc. according to body parts such as knees and ankles. A relatively thin soft supporter is used because it is particularly easy to follow the human body and has a good fit. The raised two-way warp knitted fabric (hereinafter referred to as “French pile”) is particularly stretchable in two directions. Is used for the outer surface of the main body, and is engaged with a hook-and-loop male member provided at one end of the main body for attachment and detachment.

However, in the conventional soft supporter, in particular for medical use, since the patient is healed by the hook-and-loop fastener male member, it is repeated 300 to 500 times even if there are relatively few, so the French pile gradually bends, Wrinkles are generated or the loop thread is broken and the engaging force is reduced, so that it becomes difficult to attach to the optimal site for treatment.
For this reason, paying attention to the end part gripped for mounting, the rigidity of the part is increased or a clue of rigidity is attached, but it is not sufficient (for example, see Patent Document 1).

  In general, when using a raised fabric such as French pile for clothing, the length of the raised yarn is shortened or the raised fabric is impregnated with a resin in order to improve the disadvantage that it is easy to wrinkle and is difficult to peel off. In addition, raised yarns and products aiming at bend recovery of the ground structure are manufactured, but there is a problem in the texture and the like (for example, see Patent Document 2).

  In a surface fastener female member using a raised fabric, as factors of engagement force, examination of constituent fibers (generally nylon fibers), use of nylon fibers of various physical properties and combined use of thermocompression-bonding fibers, female material structure, basis weight, The loop height, the number of loops, and the like are known (see, for example, Patent Document 3). In addition, in order to prevent deformation due to repeated use, there is a method in which a low melting point filament is used for the ground texture and heat treated at a temperature higher than the melting point after raising (for example, see Patent Document 4). Further, there is a method of setting the tricot tissue to a loop length that can be easily scraped by raising (see, for example, Patent Documents 5, 6, and 7). However, these are related to the hook-and-loop fastener, not the soft supporter body.

JP 2003-290272 A Japanese Patent No. 3260327 (conventional technology) JP 2003-325208 A Japanese Patent Laid-Open No. 5-115312 JP-A-10-33214 Japanese Patent No. 3549675 Japanese Patent No. 3590487

  It is an object of the present invention to provide a soft supporter and a method of manufacturing a soft pile for a soft supporter that can be stably attached to an appropriate site with little deformation of the main body even when the surface fastener male member is repeatedly attached and detached. And

According to the present invention, the above-described object is achieved by the following. In the soft supporter that engages and mounts the surface fastener male member and the French pile that is the outer surface of the main body, the main body has a stiffness of 60 to 140 mm when measured by the cantilever method defined in JIS L1096. The male member for a hook-and-loop fastener having a tensile shear strength in the width direction of 6.0 to 8.0 N / cm ² and a peel strength of 2.0 to 3.5 N / cm when engaged with the French pile as the outer material. Is pressed against the French pile, which is the outer material, with a load of 0.5 ± 0.2 N / cm ² , and when the attachment / detachment is repeated 500 times, the curl angle generated in the engaged portion is 60 degrees or less. It is characterized (Invention of Claim 1).

As an embodiment of the invention of claim 1, the inventions of claims 2 to 5 below are preferable. The soft supporter according to claim 1, wherein a curl angle generated in the engaged portion is 40 degrees or less (invention of claim 2). Further, in the soft supporter according to claim 1 or 2, the main body is a laminate having a French pile as a surface material (invention of claim 3). Furthermore, in the soft supporter according to any one of claims 1 to 3, when the hook-and-loop fastener male member attached to the soft supporter is engaged with a French pile which is a surface material of the main body of the soft supporter. The tensile shear strength in the width direction is 3.5 to 9.0 N / cm ² and the peel strength is 0.6 to 5.5 N / cm (Invention of Claim 4). The soft supporter according to any one of claims 1 to 4, wherein the raised height of the French pile is approximately 1 mm, and the course is 60 to 65 / 25.4 mm. Item 5).

  The invention of a method for manufacturing a French pile for a soft supporter includes a method for manufacturing a French pile used by engaging a male member of a hook-and-loop fastener as a main surface of the soft supporter. The rate is 20% or more in the course (invention of claim 6). Moreover, in the manufacturing method of the French pile for soft supporters of the said Claim 6, the shrinkage | contraction rate of finishing from the said raw machine is 20 to 40% on a course (invention of Claim 7), It is characterized by the above-mentioned.

  ADVANTAGE OF THE INVENTION According to this invention, even if it repeats attachment / detachment with a hook_and_loop | surface fastener male member, there is little deformation | transformation of a main body, and the manufacturing method of the French pile suitable for a soft supporter which can be stably mounted | worn to an appropriate site | part Can be provided.

  Embodiments of the present invention are described below. The specific configuration and evaluation results of the soft supporter will be described in the example section described later.

The soft supporter to which the male fastener of the present invention and the French pile that is the outer surface of the main body are engaged and mounted is such that the main body has a curl angle of 60 degrees or less, preferably 40 degrees or less, according to a predetermined evaluation method. It is. Here, the predetermined evaluation method is that when engaged with the French pile to be evaluated, the tensile shear strength in the width direction is 6.0 to 8.0 N / cm ² and the peel strength is 2.0 to 3. A male member with a surface fastener of 5 N / cm is used, pressed against the French pile with a load of 0.5 ± 0.2 N / cm ² , and the attachment / detachment is repeated 500 times.

  With the soft supporter of the present invention, the stiffness of the main body is 60 to 140 mm, for example, 80 to 120 mm, when measured by the cantilever method specified in JIS L1096.

The surface fastener male member constituting the soft supporter of the present invention has a tensile shear strength in the width direction of 3.5 to 9.0 N / cm ² and a peel strength of 0.00 when engaged with the French pile as the outer material. 6 to 5.5 N / cm. Below the lower limit of this range, the engagement force required for the soft supporter cannot be obtained, and when it exceeds the upper limit, not only is it difficult to peel off, but bending and curling tend to occur. The tensile shear strength and peel strength differ depending on the use and type of the soft supporter, but those having a relatively large engaging force have a tensile shear strength of 6.0 to 8.0 N / cm ² and a peel strength of 2.0. ~ 3.5 N / cm. The shape and material of the hook are not limited. The direction parallel to the fabric flow when the French pile is continuously manufactured is called the “flow direction”, the direction perpendicular to the flow is called the “width direction”, the series of stitches in the flow direction is the number of wales, and the stitches in the width direction This is called the number of courses. The tensile shear strength and peel strength when engaged with the hook-and-loop fastener are substantially the same in the flow direction and the width direction, but are strictly different.

  The main body of the soft supporter of the present invention is attached to a body part such as a knee or an ankle, and forms almost the entire shape of the soft supporter. The main body can be formed from one piece of cloth, but can also be formed by joining cloths cut into an appropriate size by sewing or bonding. In addition, other stretchable fabrics may be partially used in order to improve the followability with the body surface, appropriate pressure and operability. The stretchability of the main body can be freely adjusted by the characteristics of the fibers constituting the fabric, the blend ratio, the combination pattern of the fabrics, and the like.

  The fabric of the main body of the present invention is not limited as long as at least the outer surface engaged with the surface fastener male member is constituted by a French pile, and may be a French pile alone or a composite material obtained by laminating or sewing a French pile with other materials. . As a material to be laminated or sewn, a woven fabric, a knitted fabric, a non-woven fabric, a pile fabric, a plastic foam, or the like made of natural fibers or chemical fibers can be formed singly or arbitrarily in combination. Specific materials include, for example, weft knitted fabrics, warp knitted fabrics, power nets, which are appropriately combined with cotton, wool, rayon, acrylic, polyamide, polyester, polyurethane, vinylidene chloride and other fibers. An elastic yarn blended knitted fabric such as the above, a three-dimensional knitted fabric of a double raschel fabric, etc. Furthermore, these fabrics and rubber foams (chloroprene rubber, natural rubber, butyl rubber, styrene / butadiene rubber, isoprene rubber, etc.), urethane rubber (compressed urethane) and the like can be laminated. For laminating, urethane or polyester adhesives can be used.

  The French pile of the present invention is a structure in which a polyurethane (Pu) yarn is inserted into a warp knitting (tricot) structure of polyamide (Ny) yarn or polyester yarn, and a two-way warp knitted fabric having stretchability in the vertical and horizontal directions. It is manufactured by heat setting, dyeing, and heat setting finishing. The material, thickness, knitting structure, raising method, etc. of the yarn used are not limited, but the raising height is about 1 mm, the finished course is 60-65 / 25.4 mm, or the raising height is It is preferably about 1 mm and manufactured from the raw machine so that the finishing shrinkage is 20% or more, especially 20 to 40%. In any case, when the raised height is 0.3 mm or less, the hook of the hook-and-loop fastener male member is not caught by the loop and cannot be engaged, and when the raised height is 1.5 mm or more, curling tends to occur.

  The structure of the soft supporter of the present invention is not particularly limited. For example, when applied to a knee brace, the soft supporter is formed in a substantially rectangular shape, the upper side is slightly longer than the lower side, and a recess is formed in the approximate center of the left and right side sides. A hook-and-loop fastener is attached to the inside of the main body provided near the end of one side. The front side of the other side to which the hook-and-loop fastener is attached engages with the hook-and-loop fastener.

  Hereinafter, the present invention will be specifically described with reference to Examples (see FIGS. 1 to 4).

(Create sample)
The prototype French pile has a yarn and knitting structure, nylon 105 / half tricot knitted with 10 multifilaments in the front (F) layer, nylon 15 / half tricot knitted with monofilament in the middle (M) layer or Denby knitting, A three-layer knitted fabric with a back (B) layer made of polyurethane yarn / denby knitting was used as a living machine. Of the three-layer structure of front, back and middle, only the yarn of the back layer is in a different direction.

  Next, the raw machine was finished by raising, intermediate setting, dyeing and setting. That is, first, the raw machine is passed through the raising cloth of the raising machine, and the yarn of the green machine is drawn out to form a loop. Next, while heating the fabric shrunk by raising, tension is applied in the width direction to adjust the width, and the intermediate set is performed. Next, it is put into a room temperature dyeing machine and refined and dyed. Finally, dehydration and drying are performed, and the finishing is completed by adding a final setting process that adjusts the width and wrinkles while applying heat.

This French pile was laminated using a compression polyurethane as a core material, a micro jersey as a backing material, and an adhesive. Compressed polyurethane as a core material is manufactured by Achilles, product number: FJ (density 40.0 ± 3.0 kg / m ³ (JISK7222), hardness 110 ± 21 N (JISK6400-2), tensile strength 75 kPa (JISK6400-5) , Elongation 300% (JISK6400-5), impact resilience 45% (JISK6400-3), compression residual strain 4.0% (JISK6400-4), repeated compression residual strain 2.0% (JISK6400-4)) to 7 mm Sliced and compacted to 1.5 mm. The backing microjersey has a blending ratio of 20% polyurethane yarn (40d), polyamide yarn (40d / 34f), and a basis weight of 64 to 66 yarns / 25.4 mm and a wale of 53 to 55 yarns / 25.4 mm.
The adhesive used is Dainichi Seika Co., Ltd., a moisture permeable and waterproof material, Heimlen Y-119 (E), and the coating amount is 60 g / m ² . The laminated sample was observed with an electron microscope, and it was confirmed that there was no missing filament in the region impregnated with the adhesive.

  The obtained laminate was cut into 80 mm × 80 mm so that each side is parallel to the flow of the warp knitted fabric and in the width direction, and set with a steam iron to stabilize the form to obtain a sample for evaluation (see FIG. 1).

(Evaluation methods)
(1) Evaluation of curl angle The commercially available Kuraray Co., Ltd. make and magic tape (trademark) A2600 were used for the surface fastener male member used for evaluation. A2600 uses nylon 66 filaments with hook yarn of 220d / 1f, warp yarn of 110d / 24f, and weft yarn of 220d / 48f, warp yarn density of 170 threads / 25mm, weft thread density 52 ± 2 / 25mm, thickness Is 1.85 ± 0.15mm, the height of the hook is 1.95 ± 0.15mm, and it is cut at a height of 1.6mm and 1.1mm, and the number of hooks is 55-60 / cm ² It is back coated with an aqueous resin. This hook-and-loop fastener was cut into a tape shape having a width of 20 mm and used for evaluation.

When engaged with the French pile produced as a prototype of A2600, the tensile shear strength in the width direction in Example 1 was 6.5 N / cm ² , the peel strength was 2.5 N / cm, and in other cases, the tensile shear strength was Saga 6.0~8.0N / cm ^2, the peeling strength was 2.0~3.5N / cm.

1 and 2 schematically show the evaluation situation. FIG. 1 is an explanatory diagram regarding a method for evaluating a soft supporter of the present invention, FIG. 2 is an explanatory diagram of curl angle measurement, (a) is a top view of a sample, and (b) is a side view. Place the sample 10 on a table, hold both sides, press the male fastener 20 on the same part in the center with a load of 0.5 ± 0.2 N / cm ² , and peel off from the longitudinal end of the fastener. (FIG. 1). This operation was repeated twice per second. In addition, the direction of attaching and detaching the hook-and-loop fastener was performed separately for the flow direction and the width direction of the French pile.

  The sample 10 after 500 attachments / detachments was left on the table and the curl angle was measured (FIG. 2). According to this evaluation method, the sample repeatedly attached and detached is curled with the engagement surface with the surface fastener male member facing inward, and the both sides of the engagement surface where the curl is generated are substantially deformed without being deformed into a curved shape. Since the initial planar shape is maintained, the curl amount (curl angle) can be quantitatively evaluated with good reproducibility.

(2) Evaluation of wearability A soft supporter was created using a material whose curl angle was measured, and the wearability when wearing was repeated 500 times was evaluated according to the following criteria.
○: There is no problem in wearing.
×: There is a problem in wearing.
Here, the trouble in wearing means that the supporter body cloth curls and engages in an appropriate position, and further, the supporter body cloth shrinks, so that the male member of the surface fastener is directly applied to the skin at the time of wearing. It will cause discomfort. If there is no problem in wearing, these problems cannot be felt.

  FIG. 3 is a plan view of a knee joint orthosis that has been evaluated for wearability. The main body 1 of the knee joint orthosis is formed from one piece of fabric laminated with a French pile, and has a generally trapezoidal shape with the upper side 2 slightly longer than the lower side 3 as a whole. An opening 4 is provided substantially in the center corresponding to the knee of the body, the upper left side 5 and the upper right side 6 corresponding to the thigh, and the lower left side 7 and the lower right side corresponding to the lower leg. 8 is formed in a band shape. The upper right side 6 is divided into upper and lower parts for easy mounting. The upper sides 5 and 6 and the lower sides 7 and 8 are separated from each other by a predetermined distance corresponding to the bending of the knee. A hook-and-loop fastener A2600 (9) as a hook-and-loop male member is attached to the back surface in the vicinity of the ends of the right side edges 6 and 8, and the dimensions of the hook-and-loop fastener male member are 35 mm wide and long at the upper and lower sides of the thigh. The width is 70 mm at the lower leg and the width is 100 mm. When wound around the body, each hook-and-loop fastener male member 9 is engaged with the outer surface of the left side 5 and 7 and attached.

(As a result of evaluation)
FIG. 4 shows structures, production methods, and evaluation results of Examples and Comparative Examples. The comparative example is a commercial product.

  In each condition, the variation in curl angle was about ± 10 °. There was no significant difference depending on the direction of attachment / detachment (flow, width). In the sample of the example, the curl angle was remarkably reduced as compared with the commercially available product.

  In the soft supporter using the laminate of the example, good mounting properties were obtained even after repeated desorptions 500 times.

  In the case where good wearability was obtained, the French pile used was manufactured with a raised height of about 1 mm and a shrinkage ratio of 20 to 40% from the raw machine width to the finished width. In particular, the most preferable result was obtained in the sample manufactured so that the shrinkage rate was 27%.

  The mechanism by which the curl angle varies depending on the shrinkage rate is unknown, but can be inferred as follows, for example. The loop of the French pile is fixed to the ground structure, but when the hook and loop of the hook-and-loop fastener male member is repeatedly attached and detached, the loop is drawn upward and shortened in the in-plane direction by the length drawn upward. In the laminate, the backed material remains the same. For this reason, the lengths are uneven on the front and back sides, and this difference appears as a curl. A French pile with a predetermined shrinkage has a margin in the filament of the ground tissue, so even if the French pile loop is pulled out by the hook of the hook-and-loop fastener male member, the length in the in-plane direction is not easily changed. Is also unlikely to occur.

  In addition, in a French pile where curling is likely to occur, if the hook and loop of the hook-and-loop fastener male member are repeatedly attached and detached, not only the loop is easily pulled upward, but also the loop tip breaks and the engaging force with the hook-and-loop fastener male member is increased. Easy to lose. Therefore, it is considered that the French pile that is less likely to curl is suitable for engagement with a hook-and-loop fastener regardless of whether or not there is a laminate.

Explanatory drawing regarding the evaluation method of the soft supporter of this invention. Explanatory drawing of the curl angle measurement in connection with this invention. The top view of the knee joint orthosis which performed the wearability evaluation in connection with this invention. Explanatory drawing of the evaluation result of the Example and comparative example of this invention.

Explanation of symbols

  1: main body, 2: upper side, 3: lower side, 4: opening, 5: upper left side, 6: upper right side, 7: lower left side, 8: lower right side, 9: hook-and-loop fastener, 10: sample, 20: A surface fastener male member.

Claims (7)

In the soft supporter that engages and attaches the surface fastener male member and the French pile that is the outer surface of the main body, the main body includes:
The bending resistance is 60 to 140 mm when measured by the cantilever method specified in JIS L1096,
A surface fastener male member having a tensile shear strength in the width direction of 6.0 to 8.0 N / cm ² and a peel strength of 2.0 to 3.5 N / cm when engaged with a French pile as an outer material. The curl angle generated in the engaged portion is 60 degrees or less when the outer pile is pressed against the French pile at a load of 0.5 ± 0.2 N / cm ² and is repeatedly attached and detached 500 times. Soft supporter.   The soft supporter according to claim 1, wherein a curl angle generated in the engaged portion is 40 degrees or less.   The soft supporter according to claim 1 or 2, wherein the main body is a laminate having a French pile as a surface material. When the hook-and-loop fastener male member attached to the soft supporter is engaged with the French pile which is the outer surface of the soft supporter main body, the tensile shear strength in the width direction is 3.5 to 9.0 N / cm ² , peeling The soft supporter according to any one of claims 1 to 3, wherein the strength is 0.6 to 5.5 N / cm.   The soft supporter according to any one of claims 1 to 4, wherein the raised height of the French pile is approximately 1 mm, and the course is 60 to 65 pieces / 25.4 mm. In the manufacturing method of the French pile used by engaging with the surface fastener male member as the body surface of the soft supporter,
A method for producing a French pile for a soft supporter, wherein the raised height is about 1 mm, and the shrinkage rate from the raw machine to the finish is 20% or more in the course. The method of manufacturing a French pile for a soft supporter according to claim 6, wherein the shrinkage of finishing from the raw machine is 20 to 40% in the course.

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