JPH074060Y2 - Golf wrist supporter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention has the performance according to the golf theory, and the rigidity, impact resistance, and post-molding process that can be performed to fit the wrist (wrist) of an individual. The present invention relates to a golf wrist supporter excellent in workability and touch.

More specifically, the present invention softens by heating at a relatively mild temperature, can process or modify a part or the whole of the shape according to various purposes, and has high rigidity by cooling to room temperature. The present invention relates to a golf wrist supporter using a polymer resin laminate capable of achieving impact resistance, particularly a sheet laminate of a fibrous base fabric and a polymer resin.

[Prior Art] A number of theories have been described to improve golf, and various orthodontic appliances have been created for that purpose. Correct grip is important for golf shots. The right grip is that for an ordinary right-handed person, the left hand, especially the left wrist (wrist), must be flat. This is because the flat list is the impact position.
It is necessary to prevent the left wrist from breaking on the back side, palm side, thumb side, and little finger side. For that reason, synthetic resin supporters, which are convenient for processing, are being prototyped and used.

However, it is convenient to make the same shape with a synthetic resin material, but it is inconvenient to make a wrist supporter for golf with individual differences because it is difficult to post-process at high temperature for adjustment.

On the other hand, recently, materials that can be processed at relatively low temperatures have appeared.

A material that can be processed at a relatively low heating temperature and that has high rigidity as a resin material at room temperature is specifically, poly-ε-caprolactone, poly-1,
A low melting point crystalline polymer such as 4-transisoprene, poly-1,4-transbutadiene, poly-transoctenamer, or a synthetic resin material having a low glass transition temperature such as polynorbornene.

Since these synthetic resin materials soften under mild heating temperature conditions, they can be easily processed and molded by hand after being heated and softened by using warm water or hot air, and the resulting molded product Has the feature that its shape can be fixed by cooling to room temperature.

[Problems to be Solved by the Invention] With the above-mentioned synthetic resin materials, 1) it is difficult to perform a post-molding process for adjusting the wrist supporter to the wrist and adjusting it according to the individual list. 2) When a synthetic resin material molded product comes into contact with the wrist, it may be discolored or rashed, so it is necessary to make many holes in the molded product to improve the air permeability.
3) Therefore, there is a problem that the rigidity and impact resistance of the molded product are lowered. Therefore, attempts have been made to improve these problems, but the effects are insufficient, the cost is industrially high, and these problems have not been completely solved.

On the other hand, a low-temperature softening synthetic resin can be used for various purposes by taking advantage of its characteristics, but since it generally shows melt fluidity to some extent during softening, a sheet-shaped molded product, particularly a large sheet. The molded article was extremely liable to be deformed, uneven thickness was apt to occur during the molding operation, and there was a problem in operation such as basic cracking or breaking.

In addition, since sheet-like molded products of these synthetic resins generally have poor water absorption and are not breathable, when they are brought into contact with human skin, they are inferior to the touch and are always in close contact with human skin as casts. Problems such as discoloration have been pointed out when using. In order to improve this, improvement measures such as wearing a cloth tape on the base of the part in contact with the skin or providing ventilation holes in the sheet-shaped molded product have been implemented, but they are still insufficient, The demand is strong.

In addition, low-temperature softening synthetic resins are generally required to have rigidity, impact resistance, and surface scratch resistance when cooled and hardened, as with ordinary resin materials. Was needed.

In addition, printing or painting on the surface of these synthetic resin materials is generally difficult because the paint does not ride well or the printing operation is difficult, and it is aesthetically pleasing in applications where the surface of the synthetic resin material is exposed. It had a problem that it was inferior to.

[Means and Actions for Solving the Problems] The inventors of the present invention have conducted extensive studies to improve the above-mentioned problems, and as a result, have found that a laminate composed of a low temperature softening synthetic resin material and a fibrous base cloth is used. When you make a golf wrist supporter, you can obtain a product that has the performance according to the golf theory and can be easily post-molded to fit the individual's wrist, with excellent rigidity, impact resistance, workability, and feel. Therefore, they have arrived at the present invention.

Although it depends on the type of synthetic resin or fibrous base fabric to be laminated, the heat-processable resin laminate of the present invention has excellent operability during heat-processing, rigidity during cooling and curing, impact resistance and When the physical properties such as scratch resistance are improved and the fibrous base fabric surface is used so as to come into contact with human skin, it is possible to improve the touch and unevenness, and further, the fibrous base fabric surface is exposed to the outside. When used, it has the effect of improving the appearance.

That is, the present invention has (a) a fibrous base cloth and (b) a softening temperature of 25 ° C. or higher and less than 120 ° C. provided on the base cloth,
Allowable stretch ratio during softening is 10% or more, and 10% of that
Provided is a golf wrist supporter made from a heat-processable resin laminate comprising a layer of a low temperature softening thermoplastic resin having a natural shrinkage ratio of less than 50% for one minute after the tension release of a stretched product. is there.

The low temperature softening thermoplastic resin material that can be used in the present invention is 25 ° C or higher and lower than 120 ° C, preferably 35 ° C or higher 1
A synthetic resin and a composition thereof having a softening temperature of less than 00 ° C, particularly preferably 40 ° C or more and less than 90 ° C. The curing of the resin may be due to the glass transition temperature or crystallization. The crystal melting point and the glass transition point can be measured by a differential thermal analyzer. Softening temperature is 25
If the softening temperature exceeds 120 ° C, it will be difficult to put the resulting resin laminate into practical use at room temperature.
It is not preferable because the operability during processing is significantly reduced.

Further, the resin material used in the present invention has an allowable stretch ratio for tensile stretching, that is, a breaking elongation of 10% or more, and preferably an elongation at yield of 10% or more, at a heating processing operating temperature, particularly a temperature exceeding the softening temperature of 20 ° C. Yes, and particularly preferably, the elongation at yield is 30% or more. Furthermore, the tensile shrinkage of the 10% stretched material of the resin material immediately after stretching at the same temperature was 1% after the stretching tension was released, and the natural shrinkage rate was 50% of the stretched width.
Must be less than.

If the allowable stretch ratio of the resin material is smaller than this range, the resin laminate is likely to crack during the heating operation, which is not preferable.
Further, if the shrinkage ratio after releasing the tension is large, the reproducibility of shape forming during heating processing is deteriorated, which is not preferable.

The melt index (JIS-K-7210A method, test temperature 200 ° C., load 5 kgf) of the resin material is preferably 0.1 to 50 g / 10 minutes, particularly preferably 0.5 to 10 g / 10 minutes.

The hardness (JIS-K-6301A type tester method) of the resin material at room temperature (25 ° C.) is preferably 80 or more, more preferably 90 or more, and particularly preferably 95 or more.

Specific examples of the resin material that can be used in the present invention include crystalline olefin resins such as polyethylene, polybutylene, and EVA, polystyrene resins, polyvinyl acetate resins, polyacrylate resins, polymethacrylate resins, polychlorinated resins. Vinyl resin, polyvinylidene chloride resin,
Polyvinyl ether resin, polyvinyl ketone resin,
Examples thereof include polyester resins, crystalline polydiolefin resins, polycyclic olefin resins such as trans polyoctenamer, polynorbornene resins and mixtures thereof.

Particularly preferred resin materials include poly-ε-caprolactone, trans-1,4-polyisoprene, trans-1,4-
Examples thereof include polybutadiene and trans polyoctenamer.

In addition, these resin materials include elastomers or resin polymers that are not particularly specified in the present invention, stabilizers that are known resin additives, antiblocking agents, pigments, fillers, etc. If necessary, a plasticizer, a flame retardant, an antistatic agent, etc. can be added.

Specific examples of stabilizers include antioxidants such as phenyl-α-naphthylamine, 2,6-di-tert-butylphenol, tetrakis [methylene (3,5-di-tert-4-hydroxyphenyl) propionate], weather resistance Agents and heat stabilizers.

Specific examples of the filler include carbon black, clay,
Examples thereof include talc, calcium carbonate, calcium bicarbonate, kaolin, diatomaceous earth and glass fiber.

Specific examples of plasticizers include paraffin-based, naphthene-based or aromatic petroleum oils, as well as various ester-based plasticizers, etc. By mixing these, hardness is lowered and flexibility or elasticity is increased. You can

The required performance of the fibrous base fabric used in the present invention varies depending on the use of the resin laminate or the type of the resin material to be laminated, and can be selected in a wide range. Must be above the processing temperature.

Specific examples of the fibrous base fabric include natural fibers such as cotton and hemp, inorganic fibers such as glass fibers, carbon fibers, asbestos fibers and metal fibers, recycled fibers such as viscose rayon and cupra, di- and tri-fibers. Semi-synthetic fibers such as acetate fibers, nylon 6, nylon 66, polyester (polyethylene terephthalate etc.) fibers, aromatic polyamide fibers,
Mention may be made of synthetic resins such as acrylic fibers, polyvinyl chloride fibers, polyolefin fibers and insolubilized or hardly solubilized polyvinyl alcohol fibers.

Further, the fibers in the base fabric may have any shape such as a short fiber spun yarn, a long fiber spun yarn, a split yarn, a tape yarn and the like. The base fabric may be a woven fabric, a non-woven fabric, or a composite fabric thereof.

The heat-processable resin laminate of the present invention must have at least one fibrous base fabric and at least one low temperature softening thermoplastic resin layer as a laminated structure. Specific examples thereof include a laminate composed of one fibrous base fabric and one thermoplastic resin layer, and a laminate composed of one thermoplastic resin layer and fibrous base fabrics provided on both surfaces thereof.

Further, the golf wrist supporter made of the heat-processable resin laminate of the present invention may include other layers as long as the features of the present invention are not lost.
For example, between the fibrous base cloth and the thermoplastic resin layer, for improving the adhesiveness of both layers, a laminate having an intermediate layer having excellent affinity with both layers, or for improving the texture and aesthetics, etc. A laminate having an elastomer layer, a resin foam layer or the like as an outer layer can be mentioned.

In order to laminate the fibrous base cloth of the heat-processible resin laminate of the golf wrist supporter of the present invention and the low temperature softening thermoplastic resin layer into one body, the following method is adopted, for example. You can do it.

(1) Heat fusion method A method in which a fibrous base cloth and a sheet-shaped low-temperature softening thermoplastic resin layer obtained in advance by an inflation method, a T-die method, or the like are stacked, and thermocompression bonding is performed while heating. Alternatively, a method of laminating a layer of a low temperature softening thermoplastic resin on a fibrous base fabric by a coextrusion method, an extrusion coating method, or the like.

In this type of method, the processing temperature and the thermocompression bonding temperature are preferably 20 ° C. or more higher than the softening temperature of the thermoplastic resin. Further, it is preferable that the pressure bonding is performed by applying a pressure of about 100 g / cm ² .

(2) Adhesive bonding method In between the fibrous base cloth and the sheet-shaped low temperature softening thermoplastic resin, a tacky adhesive for improving the adhesive strength and, if necessary, wax for adjusting the viscosity are added. A method in which the adhesive / bonding composition is applied to one of the fibrous base cloth or the sheet-like thermoplastic resin by a hot melt gun or other means, and the remaining base materials are pressure-bonded and adhered.

In the heat-processable resin laminate of the present invention, each layer may have any thickness, but the fibrous base fabric has a thickness of 0.01
It is preferable that the thickness range is ˜1 mm, and the thickness of the thermoplastic resin layer is 0.01 mm to 5 mm.

The resin layer in the resin laminate capable of being heated according to the present invention is
If necessary, improve the heat resistance, strength characteristics or oil resistance of the laminate by crosslinking by vulcanization reaction with sulfur etc., radical reaction by peroxide etc., reaction by radiation or ionic reaction before or after lamination. You can also do it.

[Effects of the Invention] The golf wrist supporter made from the heat-processible resin laminate of the present invention softens the resin layer by using warm water or hot air because the resin layer softens under mild temperature conditions. After that, it can be easily processed, molded and repaired by hand. Further, due to the reinforcing effect of the fibrous base fabric, problems such as uneven thickness and breakage during the molding work could be solved.

Further, the molded product obtained by molding is hardened by cooling and has high rigidity and impact resistance,
Since the surface layer is a fibrous base cloth, it has an excellent aesthetic appearance without exposing the resin assembly and also has an effect of improving the surface scratch resistance.

In addition, when the fibrous base fabric surface is used for the purpose of coming into contact with human skin, it also has an effect of improving touch and unevenness.

[Example] In order to describe the present invention in more detail, an example will be shown below.

Examples 1 to 5 and Comparative Examples 1 to 4 A crystalline transbutadiene polymer having a softening temperature, a melt index, an elongation and a natural shrinkage ratio shown in Table 1 (produced by the method of Japanese Patent Publication No. 60-26406), poly- A 1 mm thick extruded sheet of ε-caprolactone, trans-1,4-polyisoprene crystalline polymer was heat-pressed at a temperature of 150 ° C., pressure was 2 kg / cm ² , and plain-woven polyester cloth or cotton plain-woven cloth of 0.2 mm thickness was used. By melting and pressure bonding with cupra plain woven cloth,
A heat-processable polymer resin laminate sheet consisting of one base fabric layer and one resin layer was obtained. This sheet was cut into a required shape with scissors, soaked in warm water at 60 to 100 ° C., and softened to a wooden mold to prepare a golf wrist supporter.

A crystalline transbutadiene polymer or polypropylene resin whose resin characteristics such as elongation or natural shrinkage ratio are out of the scope of the claims of the present invention are used as Comparative Examples 1 to 3, and a 1.2 mm thick crystalline transbutadiene polymer single layer sheet is also used. The results are listed in Table 1 as Comparative Example 4.

(Measurement conditions) Softening temperature: The crystalline melting point of this crystalline polymer corresponds, and MI (melt index) determined by a differential thermal analysis system: JIS-K7210, method A, measured at a test temperature of 200 ° C Elongation : JIS-K7113 No. 2 test piece shows elongation at yield at tensile speed G (500 mm / min) at 90 ° C Natural shrinkage ratio: 10% stretched under the same tensile conditions Immediately after stretching the test piece at 90 ° C Flexibility: Measured according to JIS-K7203, which shows the contraction rate against the elongation when tension is released. Supporter sheet Molding moldability * 1: Cracks occur during molding * 2: Poor shape reproducibility (resin Material of Layer) Poly-ε-caprolactone: Praxel (manufactured by Daicel Chemical Co., Ltd.) trans 1,4 polyisoprene: TP301 (manufactured by Kuraray Isoprene Chemical Co., Ltd.) Examples 6 to 8 As a polymer resin, in Example 1 Same crystalline transsubs used Using a 1 mm thick extruded sheet of diene polymer, one base fabric surface is 0.1 mm thick nylon 6.6 plain woven fabric, and one base fabric surface is now 3 mm thick cupra non-woven fabric, or 0.5 mm thick plain woven cotton fabric, or A heat-processable resin laminate sheet having a three-layer structure, which was a urethane foam having a thickness of 5 mm, was obtained under the same hot pressing conditions.

The sheet was cut into a required shape with scissors and heated with warm water and a hair dryer to prepare a wrist supporter having a cupra nonwoven fabric, a cotton cloth, and a urethane foam inside.

The golf wrist supporter is attached to the wrist, heated with a hair dryer, softened, and finely modified to fit the thickness of the individual's wrist.

The obtained golf wrist supporter has sufficient rigidity and impact resistance, is soft to the touch, has breathability, and
The nylon-based fabric surface also provided good decorativeness and scratch resistance.

[Brief description of drawings]

FIG. 1 is a drawing showing a golf player wearing a golf wrist supporter. FIG. 2 is a sectional view of a heat-processable resin laminate sheet used in the present invention. Figure 3 shows a polymer resin laminate sheet that can be heated at 60 ° C.
It is a top view of what was cut in the shape of a supporter with scissors or a knife when it was placed in the above air oven and softened. FIG. 4 is a perspective view showing a case where hot water of 60 to 90 ° C. is poured into a container and a supporter sheet is folded. FIG. 5 is a perspective view showing a softened sheet applied to a wooden mold and molded into a shape of a wrist supporter. FIG. 6 is a perspective view showing a golf wrist supporter in which a universal magic tape is attached to the supporter. FIG. 7 is a perspective view showing a golf wrist supporter attached to a wrist, hot air is blown by a hair dryer, and adjustment is performed according to the thickness of the wrist.

Claims (1)

[Scope of utility model registration request] 1. A fibrous base cloth, and (b) a softening temperature of 25 ° C. or higher and lower than 120 ° C. provided on the base cloth, and an allowable stretch ratio during softening of 10% or higher. And a golf wrist supporter made from a heat-processable resin laminate comprising a layer of a low temperature softening thermoplastic resin having a natural shrinkage ratio of less than 50% for one minute after the tension release of the 10% stretched product .