JP2007282648A - Antislip shoe sole member and manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antislip shoe sole member which has comprementary improved hygroscopicity, cushioning property and water film removal of cork particulates and the spike-effect of glass-fibers on a frozen surface, and antislip-effect. <P>SOLUTION: In a ground contact sole of a shoe sole member which is obtained by applying hot press valcanization to unvulcanized rubber blended with natural rubber and synthetic rubber, a plurality of block antislip bodies which are mixed with cork particulates and glass-fibers and have the glass-fibers oriented so that they may project out of the cross-sectional surface are fitted and disposed at stomping sections on a weight-bearing curve of virtual gravity movement trajectory or/and a heel section. Furthermore, as for its molding method, special preparatory treatment is not needed even when the unvulcanized rubber is simultaneously vulcanized in addition to the adoption of a multistage molding for the manufacturing method, so that it can be advantageously manufactured industrially. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to an anti-slip shoe sole member and a manufacturing method, and more specifically, a block anti-slip body in which cork powder particles and glass fiber are mixed and mixed into a shoe base, on a center-of-gravity movement virtual trajectory curve on a ground contact surface of the shoe base. The cork powder particles are placed in the area of the shoe sole stepping part and / or shoe sole heel part, and the cork powder is cushioned and slippery to remove the water film on the ice and snow surface and increase the contact area. Further, the present invention relates to the improvement of the slip-proof shoe sole member due to the mutual complement and the synergistic effect of the spike effect in which the cross-sectional protrusion is oriented in the substantially vertical direction with glass fiber.

Although shoes have been recognized as a part of total fashion, conventionally as a sole member used for gentlemen and ladies, fillers and the like are added to the main component in which natural rubber, synthetic rubber, etc. are blended in appropriate proportions, After kneading, a shoe sole member is generally used by heating and pressing. In addition, there is a problem of slippery on floors such as wet road surfaces, manhole surfaces, polished stone surfaces, etc., and shoes with high slip resistance that have been designed to prevent slipping on icy and snowy surfaces and frozen surfaces in cold regions in recent years. The bottom is desired. For this reason, for example, various shoe soles that have been devised for anti-slip properties have been proposed for the purpose of preventing falls on ice and snow surfaces or frozen surfaces in cold regions. In particular, the aging wave in Japan is remarkable, and the demand for anti-slip shoe soles is an unavoidable urgent issue, such as the fear of the slip phenomenon during walking. The problem of poor anti-slip properties on surfaces and frozen surfaces has not yet been solved, and it depends on the wearer's own response, such as devising how to walk using current products, so the sole member is designed to be anti-slip. In addition, there is a demand for a shoe product with high slip resistance that has walking ability, comfort, stability and the like.

For conventional non-slip soles, non-slip by mixing non-slip parts for shoe soles and metal spikes on the ground contact surface side of the sole or ingenuity of the bottom design, as well as mixing rigid fibers, animal and plant fibers, or hard granular materials. Proposals aimed at sex have become mainstream.
For example, in Japanese Patent Application Laid-Open No. 11-164707, a rigid fiber having a characteristic tip shape such as glass fiber or wollastonite is used as a non-slip member, but press vulcanization after mixing into unvulcanized rubber. The anti-slip member is not exposed to the grounding surface by itself, and it is difficult to achieve a molding method that takes advantage of the characteristics including the attributes of the rigid fiber. In Japanese Patent Application Laid-Open No. 2004-49682, when vulcanized using an unvulcanized rubber cloth sheet mixed with glass fiber or rigid fiber with a funnel-like design of the shoe sole mold, However, there is a shoe sole mold design that is fixed and has a low degree of freedom, and it is difficult to apply or divert to existing molds. In utility model registration No. 1860213 and Japanese Utility Model Laid-Open No. 05-72201, etc., an anti-slip component in which glass fiber is used for the anti-slip member and the fiber direction is oriented perpendicularly to the grounding surface is pre-cured and produced, and the shoe sole is appropriately adjusted. Although a method of disposing in a mold is also disclosed, every time a non-slip component is vulcanized, it is inefficient with buffing or squeezing that exposes the fiber cross section. In addition, Japanese Utility Model Registration No. 2602710 discloses a cold press as a means for orienting glass fibers in an unvulcanized rubber fabric for an anti-slip body perpendicularly to the ground surface and applying an uneven design. There is a difficulty in the work efficiency required for vulcanizing the anti-slip body including processing. Japanese Patent Application Laid-Open No. 7-79803 has a drawback that the particle size of the high hardness particles mixed as an anti-slip element in the epoxidized natural rubber is too large and damages the floor surface such as a floor. In this way, unvulcanized rubber fabric mixed with hard fibers such as glass fibers is heated and pressed into a shoe molding mold having a number of independent projection forming recesses on the shoe bottom so that it is integrated with the shoe sole. A method for forming a shoe sole having a protrusion is also generally known, but since the direction of the hard fiber is not determined and is scattered irregularly, the slip resistance of the shoe sole due to the hard fiber dispersed in the protrusion is almost the same. There was an unexpected difficulty. As described above, in the conventional technology, when a metal or synthetic resin spike is attached, it is easy to slip on a hard surface such as an ice vane. There was a problem that was bad and uncomfortable to wear. In addition, as an alternative material for metal spikes, norbornene rubber is the same as spikes below the glass transition point, and is more slippery with ice vanes, and changes in physical properties such as cushioning due to temperature cannot be avoided. Further, in a fiber material such as glass fiber, a fiber material having water absorption may not be absorbed after saturation even if a water absorption effect can be expected, and it may be frozen again after water absorption on a snowy snow surface or the like. In addition, it is necessary to orient these fiber materials toward the ground contact surface, and there are disadvantages that lead to complexity in manufacturing and an increase in cost. Next, in the improvement of the shoe sole design, an effect due to an increase in the contact area is expected, but there is a problem in the steady effect because the design surface is worn and the uniform wear does not occur with the passage of time of use. The present invention improves these problems, and the hygroscopicity or release property that is a characteristic of cork materials is effective for removing a water film on a wet surface, but is weak against an icing surface. In order to compensate for this disadvantage, as a result of intensive studies based on the idea of combination with glass fiber, glass fiber is mixed and mixed to improve anti-slip properties. That is, in the selective application of the mounting position or region on the ground contact surface as a sole member and the manufacturing method, the block-shaped anti-slip material according to the present invention contains glass fiber mixed with unvulcanized base rubber and fiber orientation. After vulcanization with uniform properties, the glass fiber and rubber porous cut surface exposed by cutting perpendicular to the fiber direction, and the simultaneous vulcanization with the unvulcanized rubber constituting the base of the shoe sole Molding operations that can be easily molded using the rubber throwing effect and rubber polarity compatibility without special pre-treatment, and mold stability that can provide anti-slip function and maintain stable quality Therefore, an industrially advantageous production method is provided. In view of the above problems, the present invention provides an anti-slip shoe sole member obtained by heating and pressurizing and vulcanizing an unvulcanized and synthetic rubber fabric composed of a main component containing natural rubber and synthetic rubber. It is an anti-slip shoe sole member obtained by mixing cork powder particles and glass fibers into unvulcanized rubber fabric for use, and maintains the advantages based on the attributes of the cork powder particles, in addition to glass fiber In addition, the configuration of the non-slip shoe sole in which the glass fiber is oriented substantially perpendicularly in the direction toward the ground surface to form an exposed cross-sectional protrusion form, with the complement of the shortcomings of the cork powder granules, It aims at overcoming the drawbacks of the conventional non-slip shoe sole member by synergistic effect with the exposed protrusions oriented on the ground contact surface.

The anti-slip shoe sole member of the present invention is an anti-slip shoe sole member obtained by heating and pressurizing and vulcanizing an unvulcanized rubber fabric composed of main components containing natural rubber and synthetic rubber. It is a non-slip shoe sole member made by mixing cork powder and glass fiber into a vulcanized rubber fabric. In a non-slip shoe sole member formed by heating and pressurizing and vulcanizing rubber fabric, it is positioned in the region of the shoe stepping portion and / or the shoe sole heel portion on the center-of-gravity movement virtual locus curve on the ground contact surface of the shoe base portion. In addition, the cork powder granules set in an intersecting or orthogonal state on the curve and the anti-slip shoe sole member in which a plurality of block anti-slip bodies mixed with glass fibers are fitted and disposed, Glass fiber facing the ground surface And it is allowed sectional projecting form oriented in a direction substantially perpendicular to a slip resistant sole member formed by a member made by mixing blended with these cork powder or granular material and glass fibers.
An anti-slip shoe sole member obtained by heating and pressurizing an unvulcanized rubber fabric composed of a main component in which natural rubber and synthetic rubber according to the present invention are blended, and cork powder particles and glass on the unvulcanized rubber fabric In an anti-slip shoe sole member mixed with fibers, a rubber fabric in which the blending ratio of the natural rubber and the synthetic rubber is 10 to 90:90 to 10 parts by weight, and the rubber fabric is natural rubber, isoprene rubber, butadiene It is an anti-slip shoe sole member selected from one or more of rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber, butyl rubber and the like.

According to the present invention, the effect of holding the spikes on the frozen surface of the glass fiber and the advantages and disadvantages of removing the water film by the cork powder particles are mutually complemented, and a large number of glass fibers are oriented in the direction toward the ground plane. A plurality of block anti-slip bodies are fitted and arranged in an area on the center-of-gravity movement virtual trajectory curve, which is the heaviest weight, and exhibits an excellent anti-slip function. In addition, excellent effects such as that the vulcanization molding of the shoe sole member can be produced industrially advantageously are achieved.

In order to achieve the above object, the present inventors have examined the improvement of slip resistance on a snowy surface or a frozen surface, particularly in cold regions. It is necessary to remove the water film on the frozen surface, increase the contact area, increase the catch on the ice vane, etc. Although it is most important to remove the water film such as the surface, there is no improvement means that can be considered decisive. The inventors have previously investigated the reason why the road surface such as ice and snow slides, but it has been investigated that there is a causal relationship with the presence of the micro water film on the ice. First, it is most important to remove the water film, and in addition to increasing the contact area, etc., paying attention to the need to improve the slip resistance, search for materials that satisfy the above conditions, Porous and low water absorption, suitable for water film removal on ice and snow surfaces, etc., well-familiar with rubber and does not require pre-treatment, and changes in physical properties due to temperature are small, heat insulation and long-term anti-slip We have found the use of cork material that can maintain a steady effect of sexuality, has an appropriate cushioning property, and has various characteristics such as a large contact area and increased holdability. That is, unlike water absorption in seed husks, etc., cork wood has low water absorption, leading to the knowledge as a solution for removing water film on ice and snow surfaces by focusing on so-called breathing moisture absorption and release characteristics. In Japanese Patent Laid-Open No. 2002-320503, as a result of various investigations regarding the removal of the water film layer on the above-mentioned problem ice / snow surface, etc., by adopting those having micro pores on the ground contact surface, micro water becomes pores. It is disclosed that the slip resistance can be improved by removing the water film layer when the shoe sole touches the ground. Furthermore, even if an equivalent effect can be expected by adopting, for example, a rubber or resin foam as a shoe sole, it is difficult to overcome the condition of wear strength during repeated use. Therefore, after examining various anti-slip materials that can be mixed into the shoe sole rubber composition, in accordance with JIS K 7125-1987 method, a dynamic friction coefficient test on an ice surface and a nonionic surfactant (0.05% solution) was conducted. As a result, it came to the conclusion that what mixed the cork powder particle | grain into the base rubber base material exhibited the effect excellent in the anti-slip property improvement. For this reason, as a result of searching for improved slip resistance and physical properties and behavior on the ground contact surface of the shoe sole by kneading the cork powder into a base rubber base material, kneading of a predetermined amount of cork powder with the desired powder size In addition, by buffing the surface of the molded shoe sole after kneading, the intended purpose as a solution for improving the slip resistance has been achieved.
According to the present invention, in the anti-slip shoe sole member made of the cork powder particles, the anti-slip function is improved as it is due to the attribute of the cork material. However, it is desirable to exhibit a sufficient anti-slip function on hard and soft ice surfaces such as hard ice surface, soft ice surface, melted ice surface, and compressed snow surface. In addition to the anti-slip function of the ice by the material, it is particularly desirable to improve the anti-slip effect of the ice. In addition, even in the case of glass fibers that have been used conventionally, the desired anti-slip effect cannot be expected by simple mixing, and the addition of hard members such as glass fibers can also be a hindrance to surface damage and cracking. However, in any case, the anti-slip effect is related to the orientation or direction of the glass fiber, which indicates that the improvement of the anti-slip effect is necessary and sufficient as a solution. The present invention is an improvement in the anti-slip effect in a shoe sole member, wherein a block-type anti-slip material mixed with cork powder particles and glass fibers is used as a shoe on a center-of-gravity movement virtual trajectory curve on the ground contact surface of the shoe base. A plurality of cork powder particles are placed in the bottom tread part and / or the sole part of the shoe sole, and the cork powder is anti-slipping with water film removal from the snowy surface and cushioning that increases the contact area. In addition, the present invention relates to a shoe sole member in which the anti-slip effect is improved by mutual complementarity and a synergistic effect with a spike effect in a cross-sectional protruding form oriented in a substantially vertical direction with glass fiber.
The present invention relates to an anti-slip sole member obtained by heating and pressurizing and vulcanizing an unvulcanized rubber fabric composed of a main component in which a natural rubber and a synthetic rubber are blended at the sole base, and the center of gravity of the sole base at the ground contact surface Anti-slip property, which is located in the area of the shoe stepping part and / or shoe sole heel part on the moving virtual trajectory curve, and in which a plurality of block-like anti-slip materials mixed with cork powder particles and glass fibers are fitted and arranged. The sole member is a non-slip sole member obtained by blending cork powder and glass fiber into the unvulcanized rubber fabric for ground contact bottom molding, and an average particle diameter with respect to 100 parts by weight of the rubber fabric. Slip shoes made by mixing 3 to 30 parts by weight of cork powder having a diameter of 0.5 to 3.0 mm and 15 to 50 parts by weight of glass fibers having a fiber length of 30 to 100 mm and a diameter of 10 to 100 microns. It is a structure of a bottom member.
The cork granule blended as an anti-slip material in the present invention is a bark of cork oak that grows on the Mediterranean coast. The bark is first peeled off at about 20 years of age, and then the bark is peeled off at a cycle of 9 years. It is said that it is a natural product that does not deplete forest resources. The cork structure is made up of hexagonal prisms that are stacked like bricks, made of cytoplasm with a lower fatty acid as a binder, and consists of 20 to 40 million small cells per cubic centimeter. The inside is said to be filled with almost the same gas as air. Therefore, it has features such as lightness and elasticity, high friction coefficient, impermeability to liquid, texture and feel, and resistance to decay.
In the present invention, the unvulcanized rubber fabric blended with natural rubber and synthetic rubber is characterized in that the cork powder and glass fiber are blended and mixed, in order to exhibit anti-slip properties, the average of the cork powder It is appropriate that the particle diameter is 0.5 to 3.0 mm, and the glass fiber has a fiber length of 30 to 100 mm and a diameter of 10 to 100 microns. The reason why the particle size distribution of the cork powder is 0.5 to 3.0 mm is that when the particle size is less than 0.5 mm, the anti-slip effect is not exhibited, and when the particle size exceeds 3.0 mm, it is light. Although it is elastic, the exposed cork is likely to be crushed and broken, and the resulting anti-slip property tends to be reduced. More preferably, the range of 1.0 to 2.0 mm is appropriate as the average particle diameter. Further, if the cork powder is less than 3 parts by weight, a sufficient anti-slip effect cannot be obtained. On the other hand, if it exceeds 30 parts by weight, the mechanical properties of the bottom member after vulcanization molding by heating and pressurizing the rubber fabric are lowered. Thus, there is a possibility that the function of holding the granular material is lowered, and the amount of biting into the ice and snow surface after molding may be reduced, and the range of 5 to 20 parts by weight is preferable.
The unvulcanized rubber fabric composition for a shoe sole member used in the present invention is a rubber usually used for a shoe sole. For example, natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, acrylonitrile- It is an unvulcanized rubber mainly composed of one or more selected from butadiene rubber, chloroprene rubber, butyl rubber and the like. The blending ratio of the natural rubber and the synthetic rubber is 10 to 90 parts by weight: 90 to 10 parts by weight.
As described above, in the present invention, the rubber material for shoe sole is mixed with cork powder and glass fiber, but the cork powder has little change in physical properties due to temperature and exhibits anti-slip properties over a long period of time. In addition, the anti-slip effect can be expected, and when the water-absorbing material is porous and hygroscopic, and the water-absorbing material generally reaches saturation, the adhesion with the water film obtained by the water absorption effect cannot be obtained and the anti-slip function is lost. When the water absorption part freezes, the physical properties of the shoe sole member are lowered, but the cork material has low water absorption and can exhibit excellent moisture absorption. That is, the phenomenon that the anti-slip function is lost in a saturated state due to low water absorption is avoided and does not hinder the removal of the water film on the ice or snow surface. However, although cork is weak against icing surfaces as mentioned above, glass fiber supplements its disadvantages, and glass fiber has a hindrance to water film removal, but it is mutually complementary using the hygroscopic property of cork. It can exhibit a synergistic effect based on it. The glass fiber has a difficulty in removing the water film, but demonstrates the effect of gripping spikes on the frozen surface, while the cork material increases the contact area, exhibits excellent anti-slip properties, and has an appropriate cushioning property, such as a floor. There is no fear of hurting.

  Further, in the configuration of the present invention, in the anti-slip sole member formed by heating and pressurizing an unvulcanized rubber fabric made of a main component in which natural rubber and synthetic rubber are blended in the sole base, the sole base The cork powder particles are positioned in the region of the shoe stepping portion and / or the sole portion of the shoe sole on the virtual locus curve of the center-of-gravity movement on the ground contact surface, and intersect with the region on the locus curve, preferably in a substantially orthogonal shape. And block anti-slip bodies mixed with glass fibers, but with block anti-slip bodies containing mixed cork powder and glass fibers, the glass fibers are oriented in a substantially vertical direction toward the ground plane. It is an anti-slip shoe sole member formed as a cross-sectional protruding shape, and functions so as to exhibit a function as an anti-slip shoe sole member by the synergistic effect of these configurations.

Hereinafter, the sole member according to the present invention and the manufacturing method thereof will be described.
First, the basic composition of base rubber, which is an unvulcanized rubber fabric used in the examples, is shown below.

Natural rubber 42 parts by weight Synthetic rubber 27 parts by weight Accelerator 3 parts by weight Softener 5 parts by weight Filler 20 parts by weight Anti-aging agent 3 parts by weight Unvulcanized rubber dough with the above composition is kneaded using a roll This is used as a base rubber. The kneaded Mooney viscosity was 40.

Next, the rubber composition for the sole member used in the present invention is composed of 15 to 50 parts by weight of glass fiber having a fiber length of 30 to 100 mm and a diameter of 10 to 100 microns, and further sulfur to 100 parts by weight of the base rubber. 1 part by weight was blended to obtain rubber compositions for shoe sole members.
The sole anti-slip member according to the present invention is as shown in the plan view of the anti-slip sole member according to the present invention in FIG. 1, and is composed of the sole 3 and the sole base 2 of the anti-slip sole member 1. The center-of-gravity movement virtual trajectory curve is positioned in the region of the shoe sole stepping portion 4 and / or the shoe sole heel portion 5 on the center-of-gravity movement virtual locus curve 16 on the sole contact surface 7 of the slip-proof sole member 1. 16 is configured such that a plurality of block anti-slip bodies 6 are arranged in a fitted state at least in an intersecting manner. 8 is a recessed part.
FIG. 2 is an explanatory view of a main part of the slip resistant sole member according to the present invention. In the configuration comprising the sole 3 and the shoe base 2 of the slip resistant sole member 1, the shoe of the slip resistant sole member 1 is shown. It is positioned in the region of the shoe sole stepping part 4 and / or the shoe sole heel part 5 on the center-of-gravity movement virtual trajectory curve 16 on the bottom ground contact surface 7, and is preferably at least intersecting on the center-of-gravity movement virtual trajectory curve 16 Is a configuration in which a plurality of block anti-slip bodies 6 are arranged in a fitted state in the shoe sole stepping portion 4 and the shoe sole heel portion 5 in a substantially orthogonal shape. The recessed portion 8 is formed as an adjacent state between the plurality of block anti-sliding bodies 6 fitted and arranged, and acts so as to be involved in the behavior of residual or discharged intruders in addition to ice or moisture.
3 is a cross-sectional view taken along the line AA of the non-slip shoe sole member in FIG. In FIG. 3, an anti-slip shoe sole member 1 includes a bottom 3 and a shoe base 2, 6 is a block anti-slip body, 7 is a shoe ground contact surface, and 9 is glass fiber.
FIG. 4 is a perspective view of a block anti-slip body according to the present invention. The anti-slip body 6 has a structure of an anti-slip material in which the glass fibers are oriented in a substantially vertical direction along the vertical axis on the side surface, and the shape of the anti-slip material is in the form of an arc-shaped block with the cut protruding surface of the glass fibers as the upper surface. FIG. 5 is a schematic view showing another embodiment in which a notch is provided on the upper surface, and FIG. 6 is a schematic view showing another embodiment in which holes separated along the central axis are formed.
FIG. 7 is a cross-sectional view of a block anti-slip body molding die according to the present invention, and FIG. 8 is a perspective view of an unvulcanized sheet laminate in the present invention.

In FIG. 7, 9 is a glass fiber, 17 is a cork powder, 10 is a lower mold for molding a block anti-slip body, 11 is an upper mold for molding a block anti-slip body, 12 is a multi-stage mold narrow gap part, and 13 is It is an unvulcanized sheet laminate. FIG. 8 is a perspective view of an unvulcanized sheet laminate, and as an effect of adopting a multistage mold for molding in the present invention, the glass fiber 9 is oriented in a substantially horizontal axis direction in the unvulcanized sheet laminate 13. In the cross section, the glass fiber is in the form of an exposed protrusion. Reference numeral 17 denotes a cork powder.
The non-slip sole member according to the present invention, i.e., the sole base of the sole member formed by heating and pressurizing and vulcanizing an unvulcanized rubber cloth composed of a main component containing natural rubber and synthetic rubber at the sole base. A plurality of block anti-slip bodies mixed with cork powder particles and glass fibers are fitted and arranged in the region of the shoe sole stepping portion and / or the shoe sole heel portion on the center-of-gravity movement virtual locus curve on the ground surface. Regarding the manufacturing method of the slip-resistant sole member, the molding process of the slip-resistant sole member will be described.
Step 1: Using an open roll, the unvulcanized rubber dough kneaded with a mixer is 3 to 30 weights of cork powder having an average particle size of 0.5 to 3.0 mm with respect to 100 parts by weight of the base rubber. 30 minutes in the gap between the open rolls having a predetermined dough thickness while gradually adding 15 to 50 parts by weight of glass fiber having an average fiber length of 30 mm and a diameter of 17 to 20 microns and 1 part by weight of sulfur. After kneading to determine the orientation of the glass fibers in a certain direction, a rolled dough sheet having a thickness of 5 mm is produced, but no release agent is applied to the surface of the rolled dough sheet. Step 2: A preliminary sheet having a predetermined dimension and aligned in the rolling direction is cut from the rolled dough sheet, and an appropriate number of unvulcanized sheet laminates 13 are laminated and placed on another forming mold for molding, and 920 at 150 degrees. Second, after vulcanization, the mold is demolded and cooled to produce the block antiskid 6.
Step 3: Next, the block anti-slip member 6 was cut to a thickness of 3 mm in a direction perpendicular to the rolling direction to obtain a cut piece 15 in which the glass fiber tip was exposed in a substantially vertical direction on the upper and lower cut sections.
Step 4: The cut pieces 15 are punched in accordance with the shape of the shoe sole design to be arranged, a block anti-slip body is obtained, and the unvulcanized base rubber is placed on a predetermined part of a mold for molding a shoe sole as appropriate. It is set so that it is vulcanized at 150 degrees for 420 seconds, and the block antiskid 6 is exposed to the ground contact surface. As described above, the block anti-slip body 6 in the present invention includes the block anti-slip body forming lower mold 10 and the block anti-slip body forming upper mold 11 shown in FIG. Only when the provided multistage mold is used can the conditions for providing the desired glass fiber orientation be satisfied and the solution to be solved.
In the present invention, the block anti-slip body is a process combination in which a molding multi-stage mold is selectively adopted as a molding mold and is combined with other processes, and the block anti-skid body is kneaded with a mixer. Using an open roll for the vulcanized rubber fabric, cork powder and glass fiber, further adding and mixing sulfur, repeatedly passing the roll narrow part set at a predetermined interval with the open roll multiple times, the orientation of the glass fiber Rolled dough sheet formed in a certain direction is placed on an appropriate number of unvulcanized sheet stacks in a multistage mold for molding, vulcanized, demolded and cooled, and the tip of the glass fiber is exposed in a substantially vertical direction A block anti-slip body is formed with a punching die with an appropriate thickness so that it can squeeze, and then the block anti-slip body is placed in a mold for molding a shoe sole, and unvulcanized rubber is separately set and vulcanized and integrated. With the manufacturing method of slip-proof sole material That. As a result, as described above, the air that intervenes on each laminated surface of the unvulcanized rubber fabric is difficult to escape during the pressure vulcanization, and further, the part of the burr generated during the pressure vulcanization is specified in part. Therefore, the glass fiber that has been previously oriented flows to the burrs occurrence location, and works to eliminate the difficulty in implementation of the conventional method, which is an impeding factor that the orientation direction of the glass fiber tends to collapse.

In the present invention, the multistage mold for molding is selectively adopted in the above (3), and the cutting pieces appropriately thickened so that the tips of the glass fibers are exposed in a substantially vertical direction are blocked with a punching die. Form the body. As a result, the air on the laminated surface can be easily released, and the burr generation location is the same as the position of each laminated surface, so that the glass fiber has an anti-slip effect that protrudes in a substantially vertical direction. The obstruction factor that collapses can be solved.
FIG. 9 is a perspective view of a block anti-slip body according to the present invention. In the block anti-slip body layer 14, the glass fibers 9 are oriented in a substantially constant direction. Nine pointed protrusions are exposed and formed. Reference numeral 17 denotes a cork powder.
FIGS. 10 and 11 show a block anti-slip body on the anti-slip shoe sole member according to the present invention, in the region of the shoe stepping portion and / or shoe sole heel portion on the center-of-gravity movement virtual locus curve on the ground contact surface of the shoe base. It is a top view which shows the other Example by which arrangement | positioning arrangement | positioning was carried out, 6 is a block antiskid body, 16 is a gravity center movement virtual locus | trajectory curve.
[1] Friction test:
The friction coefficient of the non-slip shoe sole member according to the present invention prepared as described above was measured by the following method. Friction coefficient: ASTM method Test method A sample is attached to a slider and set, and when a tensile tester is pulled, the resistance is measured to obtain the friction coefficient.
・ Slider: 64 × 65 × 8.5 mm, 200 g ・ Friction object: Stainless steel plate ・ Tensile speed: 100 mm / min ・ Load: Yes (1 Kg) ・ None ・ Dynamic friction coefficient = friction resistance (N) / contact force (N)
* Contact force (N) = [Slider mass (Kg) + Load (Kg)] × 9.81
Condition input: Slider mass 0.2kg Load 1.0kg
(1) The above measurement results are as follows. For <wet>, in the sample mixed with cork powder and glass fiber of this example, dynamic friction force (Kg) 0.845, dynamic friction force (N) 8.28945, sample weight ( g)
It was 3.3100, sample weight (Kg) 0.0033100, contact force (N) 11.8045, and dynamic friction coefficient 0.702.

On the other hand, with cork alone, dynamic friction force (Kg) 0.794, dynamic friction force (N) 7.78914, sample weight (g) 2.1527, sample weight (Kg) 0.0021527, contact force (N) 11 7931 and the dynamic friction coefficient 0.660. Also, with only glass fiber,
The dynamic friction force (Kg) was 0.789, the dynamic friction force (N) was 7.74009, the sample weight (g) was 3.3437, the contact force (N) was 11.8048, and the dynamic friction coefficient was 0.656.

In the blank rubber, the dynamic friction force (Kg) was 0.576, the dynamic friction force (N) was 5.65056, the sample weight (g) was 2.4046, the contact force (N) was 11.7956, and the dynamic friction coefficient was 0.479.
(2) Also, with <Ice>, condition input Slider mass 0.2 kg, load 2.0 kg
In the cork powder and glass fiber mixed sample of this example, the dynamic friction coefficient is 0.988, the cork powder is 0.287, the glass fiber is 1.159, and the blank rubber is the dynamic friction coefficient is 0.046. there were.
[2] Practical use test:
Using a shoe sole rubber member having the same composition as in the above test, a shoe with the trade name “Sekaicho-TOPAZ” was created, and an implementation wear test was conducted in the suburbs of Sapporo, Hokkaido. In the test body, Comparative Example 1 is a glass fiber, Comparative Example 2 is a cork powder, and Comparative Example 3 is a blank containing only a base rubber.

For each example, 10 testers were selected and evaluated in five grades: 1 slippery, 2 slippery, 3 slippery, 4 slippery, 5 slippery, in an ice vane state on snow. The above test results were Example, 4.0, Comparative Example 1, 4.0, Comparative Example 2, 3.0, and Comparative Example 3, 1.0.
As described above, one embodiment of the present invention has been described. However, the present invention is not limited to the above embodiment, and modifications and the like that do not depart from the gist of the present invention are included in the scope of the present invention.

1 is a plan view of an anti-slip shoe sole member according to the present invention. It is principal part explanatory drawing of the slip-resistant shoe sole member which concerns on this invention. It is the sectional view on the AA line of the slip-proof shoe sole member in FIG. It is a perspective view of the block antiskid object concerning the present invention. It is a schematic diagram of another example of the block anti-slip body according to the present invention. It is a schematic diagram of another example of the block anti-slip body according to the present invention. It is sectional drawing of the metal mold | die for shaping | molding of the block anti-slip body which concerns on this invention. It is a perspective view of the unvulcanized sheet laminated body which concerns on this invention. It is a perspective view of the block antiskid object concerning the present invention. It is a top view which shows the other Example which carried out arrangement | positioning arrangement | positioning of the block antiskid body based on this invention. It is a top view which shows the other Example which carried out arrangement | positioning arrangement | positioning of the block antiskid body based on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slip-proof sole member 2 Shoe base 3 Sole 4 Shoe bottom step part 5 Sole bottom part 6 Block anti-slip body 7 Shoe grounding surface 8 Recessed part 9 Glass fiber 10 Block lower mold 11 block anti-slip body molding 11 Block Anti-slip body upper mold 12 Multi-stage mold narrow gap 13 Unvulcanized sheet laminate 14 Block-shaped anti-slip body layer 15 Cutting piece 16 Center of gravity movement virtual locus curve 17 Cork powder

Claims (3)

In a non-slip sole member obtained by heating and pressurizing an unvulcanized rubber fabric composed of a main component in which natural rubber and synthetic rubber are blended at the sole base, a center-of-gravity movement virtual trajectory curve on the contact surface of the sole base An anti-slip structure comprising a plurality of block anti-slip bodies that are mixed with cork powder particles and glass fibers and are located in the upper shoe sole stepping part and / or shoe sole heel area. Sex sole member. 2. An unvulcanized rubber fabric made of a main component containing a natural rubber and a synthetic rubber at the base of the shoe sole is plain or formed by mixing cork powder or glass fiber into the unvulcanized rubber. Non-slip sole material. Shoes on the center-of-gravity movement virtual trajectory curve of the ground contact surface of the sole base of a sole member obtained by heating and pressurizing and vulcanizing an unvulcanized rubber fabric composed of main components containing natural rubber and synthetic rubber at the sole base A method for producing an anti-slip shoe sole member comprising a plurality of block anti-slip members that are mixed and mixed with cork powder particles and glass fibers, positioned in the region of the bottom stepping part and / or the shoe sole heel part. The unvulcanized rubber dough kneaded by a mixer using an open roll, and added and mixed with cork powder, glass fiber, and sulfur, and the roll narrow portion set at a predetermined interval by the open roll is a plurality of times. Repeatedly passing the glass fiber into a rolled dough sheet in which the orientation of the glass fibers is formed in a certain direction, and then placing the rolled dough sheet on an appropriate number of unvulcanized sheet laminates in a multi-stage mold for vulcanization Demolding, cooling, glass fiber tip Forming a block anti-slip body with a punching die with an appropriate thickness so that it is exposed in a substantially vertical direction, placing the block anti-slip body in a shoe sole molding die, and separately setting unvulcanized rubber, A method for producing an anti-slip shoe sole member, which is vulcanized and integrated.

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