JP2015216984A - On-ice and snow antislip footwear sole, on-ice and snow antislip footwear, and production method of antislip block for on-ice and snow antislip footwear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-ice and snow antislip footwear sole having an excellent antislip property in front/rear and right/left directions and excellent durability, and to provide an on-ice and snow antislip footwear including the same.SOLUTION: An antislip footwear sole to be bonded to the bottom surface of a footwear includes an antislip block 31 comprising foam rubber containing antislip fibers 33, in which the longitudinal direction of the antislip fibers 33 is toward a direction intersecting with a ground plane 32a.

Description

  The present invention relates to an anti-skid / skid-resistant footwear used for anti-skid / skid-resistant shoes such as anti-skid work shoes used when working on ice or snow in cold regions and anti-skid shoes used for sports on ice / snow. The present invention relates to a method for producing an anti-skid article for snow and snow and an anti-skid block for anti-skid shoes using the same.

  2. Description of the Related Art Conventionally, footwear containing glass short fibers is known as a footwear bottom that can be normally walked with a sense of stability on a hard ice surface, a soft ice surface that has melted, and a snow pressure surface.

  For example, an unvulcanized rubber sheet with glass short fibers oriented is stacked until a predetermined thickness is obtained, and cut in a direction orthogonal to the glass short fiber orientation direction so that the cut surface becomes a ground contact surface. There is a footwear bottom in which an antiskid body filled in a mold or the like and heat-molded is disposed on the entire surface of the shoe sole (see Patent Document 1). Further, there is an anti-slip component in which an uncured rubber sheet for an anti-slip body and an unvulcanized rubber sheet for a general bottom rubber are alternately laminated, and cut and press vulcanized into a stripe shape (see Patent Document 2). Furthermore, to improve the anti-slip properties of these anti-slip bodies, the island phase of the rubber part containing glass short fibers whose axial direction is the direction toward the bottom ground plane and the sea phase of the soft foamed soft rubber part There is a footwear bottom having the above-mentioned area on the ground contact surface (see Patent Document 3).

  Those using rubber containing short glass fibers are excellent in slip resistance to some extent, but have a problem of poor durability.

  In order to improve the low durability of glass fibers, there is a footwear sole that combines nylon fibers and aramid fibers so that it can exhibit slip resistance on snowy road surfaces and icing road surfaces in all situations. That is, a glass fiber mixed rubber layer in which short glass fibers whose axial direction is toward the bottom ground plane is mixed with a rubber matrix, and short glass fibers and nylon whose axial direction is toward the bottom ground plane are mixed with the rubber matrix. A composite fiber mixed rubber layer in which short fibers are mixed at an arbitrary ratio and a single rubber layer not containing fibers are combined (see Patent Document 4).

  In addition, as an anti-slip footwear that contains a plurality of bundles of non-aqueous treated natural plant fibers in a matrix and prevents the glass fibers from falling off, the non-hydrophilic treatment is applied to the bottom surface of the footwear. There is a bottom (see Patent Document 5).

No. 2-35202 Japanese Utility Model Publication 2-35203 Japanese Utility Model Publication No. 7-44406 JP 2006-326137 A JP 2008-188220 A

  However, in any case, since the fiber protruding from the matrix exhibits the slip resistance, if the fiber breaks or falls off, the slip resistance decreases, so the durability problem is still improved. Absent.

  In view of such circumstances, the present invention provides a snow and snow resistant shoe bottom having excellent slip resistance in the front and rear, left and right directions and excellent durability, a snow and snow resistant shoe having the same, and a slip resistant block for snow and snow resistant footwear provided with the same. It is an object to provide a method.

  A first aspect of the present invention that solves the above-mentioned problems is a slip-resistant footwear bottom that is joined to the bottom surface of footwear, and is made of foamed rubber containing slip-resistant fibers, and the longitudinal direction of the slip-resistant fibers is a ground contact surface. An anti-skid footwear top on ice and snow characterized by comprising a non-slip block facing in the crossing direction.

  In the first aspect, the anti-slip block is made of foamed rubber containing anti-slip fibers and the longitudinal direction of the anti-slip fibers is in a direction intersecting the grounding surface. The slip-resistant fiber is flush with the foam rubber grounding surface, but on ice and snow, the slip-resistant fiber protrudes from the foam rubber grounding surface and exhibits slip resistance, so it is slip-resistant even when walking on a hard floor surface. There is no dropout or breakage of fibers, and durability is excellent, and it becomes a slip-resistant footwear on snow and ice with excellent slip resistance in the left-right direction as well as the front-rear direction.

  According to a second aspect of the present invention, in the snow and snow resistant shoe bottom according to the first aspect, an end surface of the slip resistant fiber is retracted with respect to a base rubber grounding surface made of foamed rubber on the grounding surface of the slip resistant block. It is on the snow and snow resistant bottom, which is characterized by being

  In such a second aspect, the anti-slip fiber in the anti-slip block protrudes when the foam rubber is compressed, but it is only flush with the base rubber grounding surface on a hard floor surface, but is relatively soft. On ice and snow, it protrudes from the base rubber contact surface and contributes to slip resistance.

  According to a third aspect of the present invention, there is provided the slip-resistant on-snow shoe bottom according to the first or second aspect, wherein the slip-resistant block is partially provided.

  In this third aspect, the anti-slip performance balanced in the front-rear and left-right directions can be obtained by providing the anti-slip block partially.

  According to a fourth aspect of the present invention, in the snow and snow resistant footwear bottom according to any one of the first to third aspects, the slip resistant fiber is at least one selected from carbon fiber, glass fiber, and synthetic fiber. It is on the snow and snow resistant sole that is characterized by being.

  In the fourth aspect, slip resistance is exhibited by the slip resistant fiber selected from carbon fiber, glass fiber, and synthetic fiber.

  According to a fifth aspect of the present invention, there is provided an anti-skid footwear for ice and snow characterized by comprising the anti-skid footwear for ice and snow described in any one of the first to fourth aspects.

  In the fifth aspect, it is possible to realize an anti-skid footwear on ice and snow that has excellent anti-slip performance in the front-rear and left-right directions and has excellent durability.

  According to a sixth aspect of the present invention, the unvulcanized base rubber forming foamed rubber and the anti-slip fiber are roll-kneaded, and the roll-kneaded kneaded sheet has two sides in the roll conveyance direction and the roll width direction. Cutting the unvulcanized unfoamed sheet, and aligning the unvulcanized unfoamed sheet in a rectangular parallelepiped mold with the roll conveying direction of the unvulcanized unfoamed sheet on one side of the bottom surface of the mold A step of foaming the pre-foamed sheet in a direction perpendicular to the bottom surface and vulcanizing to form a foamed rubber in the mold; and cutting the foamed rubber in a direction perpendicular to the roll conveying direction. A slip-resistant rubber sheet, and a step of cutting the slip-resistant rubber sheet into a predetermined shape to form a slip-resistant block for snow and snow resistant bottoms. In the manufacturing method.

  In the sixth aspect, the anti-skid block for anti-skid shoes on ice and snow having excellent anti-slip performance in the front-rear and left-right directions and excellent in durability is manufactured.

  As described above, in the present invention, the anti-slip block is made of foamed rubber containing anti-slip fibers and the longitudinal direction of the anti-slip fibers is directed in a direction intersecting the grounding surface. On the floor, the anti-slip fiber is flush with the ground surface of the foam rubber, but on ice and snow, the anti-slip fiber protrudes from the ground surface of the foam rubber and exhibits slip resistance, so walk on a hard floor surface. In addition, there is no slippage or breakage of the slip-resistant fibers, and the durability is excellent, and it is possible to provide a snow and snow resistant shoe bottom and a snow and snow resistant shoe that have excellent slip resistance in the left-right direction as well as the front-rear direction.

It is a bottom view of the anti-skid shoe sole concerning Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view taken along line A-A ′ of FIG. 1. It is a partial expanded sectional view of only the outsole of FIG. It is a bottom view of the anti-skid shoe sole concerning Embodiment 1 of the present invention. FIG. 5 is a sectional view taken along line B-B ′ of FIG. 4. It is sectional drawing explaining an example of the manufacturing method of the anti-slip block concerning Embodiment 3.

  Hereinafter, the present invention will be described in detail based on embodiments.

(Embodiment 1)
FIG. 1 is a bottom view of an anti-skid shoe sole according to Embodiment 1 of the present invention, FIG. 2 is a sectional view taken along line AA ′ of FIG. 1, and FIG. 3 is a partially enlarged sectional view of only an outsole. .

  As shown in FIGS. 1 and 2, the anti-skid shoe sole 10 according to the present embodiment includes a midsole 20 joined to the bottom surface of a shoe upper (not shown), and an outsole joined to the midsole 20. 30 and two layers. The midsole 20 is formed of a softer material than the outsole 30, and the material is not particularly limited. Examples thereof include rubber, elastomer, plastic, and the like. In particular, a material obtained by foaming these materials is the midsole 20. It is suitably used as the material. Specific examples include polyurethane foam and ethylene vinyl acetate (EVA).

  On the other hand, the outsole 30 includes a slip resistant block 31. The anti-slip block 31 is formed of a matrix 32 made of foamed rubber harder than the midsole 20 and anti-slip fibers 33 held in the matrix 32.

  The material of the foam rubber is not particularly limited. For example, a foamed rubber or elastomer is preferably used. Specifically, for example, foam nitrile rubber (NBR), foam chloroprene, foam natural rubber, foam polyurethane Etc. In this embodiment, the foamed NBR is foamed with a chemical foaming agent.

  On the other hand, the slip-resistant fiber 33 may be a short fiber that has been conventionally used for slip resistance on snow and ice. The slip-resistant fiber 33 may be carbon fiber, glass fiber, or synthetic fiber such as nylon or aramid. And so on. In this embodiment, the glass fiber has an average fiber length of 100 μm and an average fiber diameter of 10 μm.

  The slip-resistant fibers 33 are provided substantially perpendicular to the ground contact surface 32a of the matrix 32, which is a base rubber ground contact surface. That is, the anti-slip fiber 33 is arranged so that its longitudinal direction is in a direction intersecting with the ground contact surface 32a. Here, being oriented in the direction intersecting with the ground contact surface 32a means that 70% or more of the anti-slip fibers 33 are oriented in a range of 90 ° ± 20 ° with respect to the ground contact surface 32a.

  The details of the method of orienting the anti-slip fiber 33 in the direction intersecting the ground contact surface 32a will be described later. However, the uncured unfoamed rubber is oriented by roll kneading, and then expanded by foaming. By restricting to only one direction orthogonal to the orientation direction, it is possible to obtain the anti-slip fiber 33 contained in the orientation state in one direction with respect to the matrix 32 made of foamed rubber. Then, this is cut into a desired thickness in a direction perpendicular to the orientation direction to obtain a desired shape, thereby forming the anti-slip block 31.

  In the slip resistant block 31, the slip resistant fibers 33 do not protrude from the surface with respect to the ground contact surface 32a of the matrix 32, and are held flush or slightly retracted (see FIG. 3A). This is considered because the matrix 32 is made of foamed rubber. Such a slip-resistant block 31 is installed on a hard surface 41 such as an ordinary floor or ground such as asphalt. When pressure is applied, the matrix 32 is made of foamed rubber and is easily compressed so that the slip-resistant fibers 33 are in contact with each other. Although it comes out on the ground 32a side, it only comes into contact with the hard surface 41. That is, the ground contact surface 32a of the matrix 32 and the slip resistant fiber 33 are flush with each other (see FIG. 3B). Therefore, even if it walks on the hard surface 41, there is no worry of the slip-resistant fiber 33 falling off or being damaged.

  On the other hand, when placed on a relatively soft surface 42 such as ice or snow and applied with pressure, the matrix 32 is made of foamed rubber, so that it is easily compressed and the anti-slip fibers 33 protrude from the ground surface 32a and are soft. Pierce into surface 42. Thereby, slip resistance is exhibited and slip resistance in the front-rear and left-right directions is obtained.

  As described above, the anti-slip block 31 of the present embodiment does not hinder the anti-slip performance not only on ice and snow but also on a normal floor or ground, and on the other hand, excellent anti-slip performance is exhibited on ice and snow. .

  In the present embodiment described above, the anti-slip block 31 is provided on the entire surface including the arch region, but may be provided on the entire surface except the arch region.

(Embodiment 2)
4 is a bottom view of the anti-skid shoe sole according to Embodiment 1 of the present invention, and FIG. 5 is a cross-sectional view taken along the line BB ′ of FIG.

  As shown in these drawings, the slip-resistant shoe sole 10A of the present embodiment is partially provided with a slip-resistant block 31 similar to that of the first embodiment, and most of the slip-resistant shoe sole 10A is generally slip-resistant for suppressing slippage caused by ordinary water, oil, or the like. The part 35 is arranged.

  The normal anti-slip part 35 is made of unfoamed rubber such as polyurethane, nitrile rubber, natural rubber, chloroprene, and is provided with grounding blocks 36 extending in the left-right direction at predetermined intervals in the front-rear direction. The grounding surface 36a of the grounding block 36 is a substantially vertical surface with respect to the side surface 36b.

  The normal slip-resistant portion 35 has a slip resistance with respect to a normal ground, floor, etc. that is not on ice or snow, and also has a slip resistance with respect to a floor wet with water or oil.

  On the other hand, the slip-resistant block 31 provided partially does not have the slip-resistant fibers 33 on the normal ground or floor as in the first embodiment. However, the slip-resistant fibers 33 are placed inside the ice or snow on ice and snow. It protrudes and exhibits slip resistance. The slip-resistant block 31 can exhibit sufficient slip resistance on ice and snow even if it is partially provided as in the present embodiment. In addition, the partial provision method of the anti-slip block 31 is not specifically limited, What is necessary is just to arrange | position with various shapes according to a use.

(Embodiment 3)
In this embodiment, an example of the manufacturing method of the anti-slip block 31 is shown.

  First, the anti-slip fibers are mixed with the unvulcanized base rubber that is the foam rubber forming the matrix 32 of the above-described embodiment, and roll kneading is repeated. Thereby, the anti-slip fiber is oriented following the roll kneading conveyance direction.

  The roll-kneaded sheet is cut into an unvulcanized unfoamed sheet having two sides in the roll conveyance direction and the roll width direction, and the unvulcanized unfoamed sheet 101 is formed into a substantially rectangular parallelepiped as shown in FIG. Installed at the bottom of the vulcanization mold 102. At this time, the roll conveying direction of the unvulcanized unfoamed sheet 101, that is, the orientation direction of the slip resistant fibers 33 is made to coincide with the horizontal direction in the figure, and the roll width direction is set to be a direction orthogonal to the paper surface. .

  Next, as shown in FIG. 6 (b), the unvulcanized unfoamed sheet 101 is foamed and expanded only in the thickness direction in the vulcanization mold 102 and vulcanized to obtain a foamed rubber 103. In the foam rubber 103, the orientation direction of the anti-slip fibers 33 is still the left-right direction in the figure.

  This foamed rubber 103 is cut in a direction orthogonal to the orientation direction (that is, a horizontal direction in the figure and a surface orthogonal to the paper surface) to obtain a slip resistant rubber sheet having a desired thickness. In this anti-slip rubber sheet, the thickness direction is the orientation direction of the anti-slip fiber 33, but the anti-slip fiber 33 does not protrude from the surface and is held flush or slightly retracted. When the cut surface is polished, the anti-slip fiber 33 protrudes from the surface, which is not preferable, and it is preferable to use the ground contact surface 32a as it is cut.

  This anti-slip rubber sheet becomes the anti-slip block 31 by having a predetermined shape so that the cut surface in the thickness direction is the ground contact surface.

  When walking on ice and a normal floor with the anti-skid shoes having the anti-skid shoe sole of Embodiment 1, excellent slip resistance is exhibited on ice, and even if walking on an ordinary floor, the anti-slip fiber No damage was seen.

  For comparison, as Comparative Example 1, when walking on ice and a normal floor with a slip-resistant shoe having a slip-resistant shoe bottom having a slip-resistant fiber protruding from the ground surface by polishing the ground-contact surface of the slip-resistant block, When walking on the floor, breakage of the slip resistant fiber was observed, and then the slip resistance on ice was lower than that of the first embodiment.

  For comparison, as Comparative Example 2, when walking on ice and a normal floor with a slip resistant shoe having a slip resistant sole similar to that of Embodiment 1 except that the matrix was solid NBR, The slip resistance was significantly lower than that of the first embodiment, and damage to the slip resistant fibers was observed when walking on a normal floor.

  For comparison, as Comparative Example 3, the matrix was made of solid NBR, and the cut surface was polished, and the anti-skid shoe having the anti-slip shoe sole was walked on ice and on a normal floor. As a result, when walking on a normal floor, the slip-resistant fibers were damaged, and then the slip resistance on ice was significantly lower than that of the first embodiment.

10, 10A Non-slip shoe sole 20 Mid sole 30 Outsole 31 Anti-slip block 32 Matrix 33 Anti-slip fiber 35 Normal anti-slip part 101 Unvulcanized unfoamed sheet 102 Vulcanized mold 103 Foam rubber

Claims (6)

  A non-slip footwear to be joined to the bottom surface of the footwear, comprising a non-slip block made of foamed rubber containing anti-slip fibers and in which the longitudinal direction of the anti-slip fibers is in a direction crossing the ground contact surface Characterized by snow and snow resistant soles.   The anti-skid on snow and snow shoes according to claim 1, wherein an end face of the anti-slip fiber is retracted with respect to a base rubber contact surface made of foamed rubber on the contact surface of the anti-slip block. Footwear bottom.   The antiskid footwear on ice and snow according to claim 1 or 2, wherein the antiskid block is partially provided.   The anti-skid anti-skid footwear according to any one of claims 1 to 3, wherein the anti-slip fiber is at least one selected from carbon fiber, glass fiber and synthetic fiber. Footwear bottom.   An anti-skid footwear on ice and snow comprising the anti-skid footwear on ice and snow according to any one of claims 1 to 4. Roll kneading the unvulcanized base rubber and the anti-slip fiber forming the foam rubber;
Cutting the roll-kneaded sheet into an unvulcanized unfoamed sheet having two sides in the roll conveying direction and the roll width direction;
Installing the unvulcanized unfoamed sheet in a rectangular parallelepiped mold so that the roll conveying direction of the unvulcanized unfoamed sheet coincides with one side of the bottom surface of the mold;
Foaming the unvulcanized unfoamed sheet in the mold in a direction perpendicular to the bottom surface and vulcanizing to form a foam rubber; and
Cutting the foamed rubber in a direction perpendicular to the roll conveying direction to form a slip-resistant rubber sheet;
And a step of cutting the anti-skid rubber sheet into a predetermined shape to form an anti-skid block for anti-skid shoes on ice and snow.

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