JP4779111B2 - Fishing footwear - Google Patents

Description

  The present invention relates to footwear worn by anglers.

  In fishing, boots may be worn for the purpose of waterproofing and heat insulation. The boot includes a rubber main body and a lining laminated with the main body inside the main body. In this boot, the rubber contributes to waterproofness and the lining contributes to a feeling of wearing. Such a boot is disclosed, for example, in JP-A-11-70002.

In the manufacture of this boot, the lining is first put on the last. Next, an uncrosslinked rubber sheet is attached to the backing to obtain a preform. By heating this preform, the rubber is cross-linked and a boot is obtained.
Japanese Patent Laid-Open No. 11-70002

  The work in which the last is used and the lining and the rubber sheet are laminated takes time and effort. The manufacturing cost of this boot is high. An object of the present invention is to provide fishing footwear that is excellent in wearing feeling and can be easily manufactured.

  The fishing footwear according to the present invention includes a main body including an upper, an inner part that is entirely or partially housed in the main body, and an insole that is housed in the main body and joined to the inner part. The inner and insole integrally form a sock shape. The main body includes a step portion on the inner surface of the side wall and in the vicinity of the bottom surface. In this footwear, the insole is prevented from being lifted by being locked to the stepped portion.

  Preferably, the main body includes step portions on both the toe side and the heel side. Preferably, the inner is joined to the main body in the vicinity of the opening of the upper.

  Preferably, the main body is made of a polymer molded body containing a large number of closed cells, and the inner is provided with a soft rubber layer.

The method for manufacturing fishing footwear according to the present invention comprises:
(1) A step of obtaining a main body having a step portion on the inner surface of the side wall and near the bottom surface by filling the mold with the polymer composition;
(2) including a step in which the insole is joined to the inner to form a sock shape, and (3) a step in which the inner and insole are accommodated in the main body, and an edge of the insole is disposed below the stepped portion.

  Preferably, the polymer composition includes a blowing agent. In the said process (1), a polymer composition expand | swells by foaming of this foaming agent, and a main body is formed.

  In this footwear, the inner contributes to the feeling of wearing. In manufacturing the footwear, the inner body is accommodated in the main body after the main body is formed. Since the insole is locked to the stepped portion, it is possible to prevent the inner from coming off from the main body, so that the stacking operation of the main body and the inner is not necessary. The footwear can be manufactured easily and at low cost.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  FIG. 1 is a front view showing a waterproof shoe 2 as a fishing footwear according to an embodiment of the present invention, FIG. 2 is a sectional view thereof, and FIG. 3 is an exploded view thereof. The waterproof shoe 2 includes an outsole 4, a main body 6, an insole 8, an inner 10, a strip 12, a drawstring 14, and a stopper 16.

  The outsole 4 is formed by crosslinking a rubber composition. For the outsole 4, rubber having excellent wear resistance and slip resistance is used. Preferred rubbers include natural rubber, polybutadiene, and styrene-butadiene copolymer. A number of grooves 18 are formed on the lower surface of the outsole 4. The groove 18 imparts slip resistance to the waterproof shoe 2. The outsole 4 may be made of felt.

  As shown in FIG. 2, the main body 6 includes an upper 20 and a midsole 22. The upper 20 and the midsole 22 are integrally formed. The upper 20 extends upward from the midsole 22. The upper 20 includes an opening 24. The outsole 4 is laminated on the lower surface of the midsole 22.

  As shown in FIG. 2, the main body 6 includes a toe-side protrusion 23t and a heel-side protrusion 23h. The toe side protrusions 23t and the heel side protrusions 23h protrude inward. As is apparent from FIG. 4, the toe-side ridges 23t and the heel-side ridges 23h are both substantially crescent shaped. A stepped portion S is formed in the main body 6 by the toe side protrusion 23t and the heel side protrusion 23h. The stepped portion S is located on the inner surface of the side wall of the main body and in the vicinity of the bottom surface. Instead of the protrusions 23t and 23h, protrusions of other shapes may be formed.

  The main body 6 is a molded body having an ethylene-vinyl acetate copolymer as a base polymer. Other polymers may be used for the body 6. Examples of other polymers include polyethylene, polypropylene, and polyvinyl chloride. An ethylene-vinyl acetate copolymer is preferred from the viewpoints of strength, shape restoration, moldability, and low pollution. The main body 6 is impermeable to water. The main body 6 provides waterproof performance to the shoe 2.

  The main body 6 includes a large number of closed cells. The closed cells do not hinder the non-permeability of the main body 6. Furthermore, closed cells contribute to heat retention. The bubbles are formed by foaming of a pyrolytic foaming agent. Examples of the thermally decomposable foaming agent used include azo compounds (for example, azodicarbonamide), nitroso compounds (for example, dinitrosopentamethylenetetramine), and triazole compounds. A low boiling type foaming agent may be used.

  The expansion ratio of the main body 6 (ratio of density when bubbles are not present to density when bubbles are present) is preferably 2 or more and 20 or less. By setting the expansion ratio to 2 or more, weight reduction of the main body 6 is achieved. In this respect, the expansion ratio is more preferably 3 or more. By setting the expansion ratio to 20 or less, the strength of the main body 6 is maintained. In this respect, the expansion ratio is more preferably 15 or less.

  The hardness Hs of the main body 6 measured with a JIS-A type hardness meter is preferably 6 or more and 15 or less. The thickness of the main body 6 is preferably 2 mm or more and 15 mm or less.

  As shown in FIG. 2, the insole 8 is accommodated in the main body 6. The insole 8 has a sheet shape. The insole 8 is a polymer molded body containing bubbles. Examples of the polymer suitable for the insole 8 include ethylene-vinyl acetate copolymer, polyethylene, polypropylene, polyvinyl chloride, natural rubber, and various synthetic rubbers. The bubbles in the insole 8 may be closed cells or open cells. From the viewpoint of water impermeability, closed cells are preferable. The hardness Hs of the insole 8 is preferably 15 or more and 40 or less. The thickness of the insole 8 is preferably 1 mm or more and 8 mm or less.

  As shown in FIG. 2, the inner 10 includes a foot portion 26, a shin portion 28, and a footwear 29. The shin portion 28 is formed integrally with the foot portion 26 and extends upward from the foot portion 26. The foot portion 26 is accommodated in the main body 6, and substantially follows the inner periphery of the main body 6. The foot part 26 abuts on the instep, heel, inner part and outer part of the wearer's foot. The shin portion 28 extends upward from the opening 24 of the main body 6. The shin part 28 is exposed. The shin part 28 contacts the ankle and shin of the wearer.

  The periphery of the foot portion 26 is joined to the periphery of the insole 8. Joining is achieved by stitching. Bonding may be performed by an adhesive. By the joining, a flange-like joining portion 31 is formed. By sticking a seam tape (not shown) to the joint 31, water tightness of the joint 31 can be achieved. By joining, the inner 10 and the insole 8 are integrated. The inner 10 and the insole 8 have a sock shape. As is apparent from FIG. 2, the joint portion 31 (that is, the edge portion of the insole 8) is located below the toe side protrusion 23 t. The junction 31 is also located below the ridge 23h.

  FIG. 5 is an enlarged cross-sectional view showing a part of the waterproof shoe 2 of FIG. In FIG. 5, the main body 6 and the inner 10 are shown. The inner 10 includes a soft rubber layer 30 and a jersey layer 32 laminated on both surfaces of the soft rubber layer 30. In the soft rubber layer 30, polychloroprene is used as a base polymer. Another rubber may be used for the soft rubber layer 30. The soft rubber layer 30 is impermeable to water. The soft rubber layer 30 contributes to the waterproofness of the shoe 2. The soft rubber layer 30 is more flexible than the main body 6. The soft rubber layer 30 enhances the feeling of wearing the waterproof shoe 2. The soft rubber layer 30 further contributes to heat retention. The hardness Hs of the soft rubber layer 30 is preferably 6 or more and 15 or less. The thickness of the soft rubber layer 30 is preferably 1 mm or greater and 15 mm or less.

  The jersey layer 32 is stretchable. Typically, the jersey layer 32 is made of nylon yarn. When the jersey layer 32 covers the soft rubber layer 30, the friction coefficient between the inner 10 and the wearer's foot is reduced. Since the slip between the foot and the inner 10 is good, the waterproof shoe 2 is easy to put on and take off. The jersey layer 32 also provides a warm feeling.

  In FIG. 5, what is indicated by reference numeral 34 is an adhesive layer. The adhesive layer 34 is located between the upper 20 of the main body 6 and the shin part 28 of the inner 10. The adhesive layer 34 is made of an adhesive. The adhesive penetrates the jersey layer 32 and reaches the soft rubber layer 30. By the adhesive layer 34, the upper 20 and the shin part 28 are joined. As is apparent from FIG. 5, the adhesive layer 34 is in the vicinity of the opening 24. In other words, the main body 6 and the inner 10 are joined only in the vicinity of the opening 24. The foot part 26 of the inner 10 is not joined to the main body 6. The insole 8 (see FIG. 2) is also not joined to the main body 6. The foot part 26 and the insole 8 can move with respect to the main body 6. Although not shown, the adhesive layer 34 is formed in an annular shape along the opening 24. The adhesive layer 34 suppresses the entry of water between the main body 6 and the inner 10.

  When wearing the waterproof shoe 2, the wearer first puts his / her foot into the inner 10 through the mouth 29. At this time, if the wearer pulls the strip 12 upward, the foot enters the inner 10 smoothly. As described above, since the inner side of the inner 10 is the jersey layer 32, the foot easily fits in the waterproof shoe 2 by slipping. Next, the wearer pulls the pull string 14 to squeeze the mouth 29 of the inner 10 and fixes it with the stopper 16. Thereby, the approach of water to the inside of the shoe 2 is suppressed.

  When taking off the waterproof shoe 2, the wearer first releases the stopper 16 and loosens the drawstring 14. Next, the wearer removes his / her foot from the waterproof shoe 2. At this time, since the insole 8 is locked to the stepped portion S on the toe side and the heel side, the insole 8 is prevented from being lifted along with the foot. In the waterproof shoe 2, the insole 8 is not displaced when the wearer takes off the shoe 2 even though the insole 8 is not joined to the main body 6. Since the inner 10 is pulled by the insole 8, the inner 10 does not come out of the main body 6 when the wearer takes off the shoes 2. The wearer can easily take off the shoes 2. If necessary, the wearer can forcibly bend the insole 8 and remove the insole 8 and the inner 10 from the main body 6. If the insole 8 and the inner 10 are pulled out from the main body 6, dust, sand and the like can be easily taken out.

  When the insole 8 is sufficiently locked, the stepped portion S may be formed only on either the toe side or the heel side. Instead of the stepped portion S on the toe side and the heel side, or along with the stepped portion S on the toe side and the heel side, a stepped portion may be formed inside or outside.

  Thus, in this waterproof shoe 2, the main body 6 contributes to the strength, the soft rubber layer 30 contributes to the wearing feeling, and the insole 8 contributes to ease of taking off. From the viewpoint of achieving both strength and wearing feeling, the difference between the hardness Hs of the main body 6 and the hardness Hs of the soft rubber layer 30 is preferably 2 or more, and more preferably 5 or more. From the viewpoint of achieving both wearing comfort and ease of removal, the difference between the hardness Hs of the insole 8 and the hardness Hs of the soft rubber layer 30 is preferably 5 or more, and more preferably 10 or more.

  In order to obtain the waterproof shoe 2, first, a base polymer (typically ethylene-vinyl acetate copolymer), a foaming agent, a foaming aid, a colorant and other additives are kneaded, and a polymer composition is obtained. can get. Next, this polymer composition is melted in a cylinder of an injection molding machine and filled into a mold composed of an outer mold and an inner mold. At this stage, the blowing agent has not decomposed. Next, the polymer composition is heated through the mold. A foaming agent decomposes | disassembles by temperature rising, and many bubbles are obtained. Since the deformation of the polymer composition is regulated in the mold, the volume of the bubbles is small. Bubbles are in a high pressure state. The mold is then opened and the polymer composition is released under atmospheric pressure. The polymer composition expands rapidly and demolds at the same time. In this way, the main body 6 including a large number of closed cells is obtained. When the mold is closed, the stepped portion S is in a so-called undercut state with respect to the inner mold. However, since the polymer composition is expanded at the time of demolding, there is no need for so-called forced removal. In other words, the foam molding method is suitable for manufacturing the main body 6 having the stepped portion S. The outsole 4 is joined to the main body 6 with an adhesive.

  On the other hand, an inner 10 and an insole 8 are prepared, and both are joined to obtain a sock. A seam tape is affixed to the joint portion 31. Next, the sock is accommodated in the main body 6. At this time, the joint portion 31 is inserted into the stepped portion S. Next, an adhesive is applied to the inside of the main body 6 and in the vicinity of the opening 24, and the main body 6 and the inner 10 are joined by this adhesive. If necessary, the inner 10 may be joined to the main body 6 at a place other than the vicinity of the opening 24. The insole 8 may be joined to the main body 6 or the midsole 22 as necessary.

  In this manufacturing method, molding using the last is unnecessary. Moreover, in this manufacturing method, since the inner 10 is partially joined to the main body 6, it takes less time than the case where the entire inner 10 is joined. In the injection molding, unlike the molding using the last, it is difficult to stack the inner 10 on the inner surface of the main body 6 at the time of molding. The inner 10 can be easily joined to the main body 6 by the manufacturing method according to the present invention. This manufacturing method is efficient.

  FIG. 6 is a front view showing a boot 40 as a fishing footwear according to another embodiment of the present invention, and FIG. 7 is a longitudinal sectional view showing a part thereof. The boot 40 includes an anti-slip sole 42, an outsole 44, a main body 46, an insole 48, an inner 50, and an adhesive layer 52. In FIG. 7, illustration of the anti-slip sole 42 and the outsole 44 is omitted.

  The anti-slip sole 42 is made of felt. The felt prevents the boot 40 from slipping in a wet rocky place or the like. The anti-slip sole 42 is joined to the outsole 44 by a hook-and-loop fastener (for example, “magic tape (registered trademark)”). The antislip sole 42 is detachable from the outsole 44. When the felt wears out, the anti-slip sole 42 can be replaced.

  The outsole 44 is formed by crosslinking a rubber composition. For the outsole 44, rubber having excellent strength is used. Preferred rubbers include natural rubber, polybutadiene, and styrene-butadiene copolymer. The outsole 44 is joined to the main body 46 in a watertight manner.

  The main body 46 constitutes an upper. The main body 46 is made of a thermoplastic resin such as polyvinyl chloride. The main body 46 may be formed from a crosslinked rubber. The main body 46 includes a toe-side protrusion 54t and a heel-side protrusion 54h. A stepped portion S is formed in the main body 46 by the toe side protrusion 54t and the heel side protrusion 54h. The stepped portion S is located on the inner surface of the side wall of the main body 46 and in the vicinity of the bottom surface.

  The insole 48 has a sheet shape and is accommodated in the main body 46. The material of the insole 48 is the same as that of the insole 8 of the waterproof shoe 2 shown in FIGS.

  Although not shown, the inner 50 includes a soft rubber layer and a jersey layer laminated on both sides of the soft rubber layer, like the inner 10 of the waterproof shoe 2 shown in FIGS. 1 to 5. The inner 50 includes a foot portion 56 and a shin portion 58. The shin portion 58 is formed integrally with the foot portion 56 and extends upward from the foot portion 56. The foot portion 56 and the shin portion 58 are accommodated in the main body 46 and are substantially along the inner periphery of the main body 46.

  The periphery of the foot 56 is joined to the periphery of the insole 48. Joining is achieved by stitching. Bonding may be performed by an adhesive. By the joining, a flange-like joining portion 58 is formed. By joining, the inner 50 and the insole 48 are integrated. The inner 50 and the insole 48 have a sock shape. As is apparent from FIG. 7, the joint 58 (that is, the edge of the insole 48) is located below the toe side protrusion 54t. The joint 58 is also located below the ridge 54h.

  The adhesive layer 52 is located between the main body 46 and the inner 50. The adhesive layer 52 is made of an adhesive. The main body 46 and the inner 50 are joined by the adhesive layer 52. As is apparent from FIG. 7, the adhesive layer 52 is in the vicinity of the opening 60. In other words, the main body 46 and the inner 50 are joined only in the vicinity of the opening 60. The foot portion 56 of the inner 50 is not joined to the main body 46. The insole 48 is also not joined to the main body 46 and the outsole 44 (see FIG. 6). The foot 56 and the insole 48 can move relative to the main body 46.

  Even in this boot 40, since the insole 48 is locked to the step portion S when the wearer removes his / her foot, the insole 48 is prevented from being lifted along with the foot. In the boot 40, the insole 48 is not displaced when the wearer takes off the boot 40 even though the insole 48 is not joined to the main body 46. Since the inner 50 is pulled by the insole 48, the inner 50 does not come out of the main body 46 when the wearer takes off the boot 40. The wearer can easily take off the boot 40. Also in the manufacture of the boot 40, the labor of stacking the main body 46 and the inner 50 is saved.

  The footwear according to the present invention can be used in various fishing grounds. The footwear according to the present invention may be attached to a wader.

FIG. 1 is a front view showing a waterproof shoe as a fishing footwear according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing the waterproof shoe of FIG. FIG. 3 is an exploded view showing the waterproof shoe of FIG. 1. FIG. 4 is a cross-sectional view showing the main body of the waterproof shoe of FIG. FIG. 5 is an enlarged cross-sectional view showing a part of the waterproof shoe of FIG. FIG. 6 is a front view showing a boot as a fishing footwear according to another embodiment of the present invention. FIG. 7 is a longitudinal sectional view showing a part of the boot of FIG.

Explanation of symbols

2. Waterproof shoes (fishing footwear)
4, 44 ... Outsole 6, 46 ... Main body 8, 48 ... Insole 10, 50 ... Inner 20 ... Upper 22 ... Midsole 23t, 54t ... Toe side protrusion 23h, 54h ... ridge 23
24 ... opening 26, 56 ... foot 28, 58 ... shin 30 ... soft rubber layer 32 ... jersey layer 34, 52 ... adhesive layer 40 ... boots (fishing) Footwear)
42 ... Anti-slip sole

Claims (6)

A main body including an upper, an inner part of which is entirely or partially housed in the main body, and an insole housed in the main body and joined to the inner;
The inner and insole form a sock shape as a unit,
This body is an inner surface of the side wall and has a step portion near the bottom surface,
A footwear for fishing constructed so that the edge of the insole is positioned below the stepped portion so that the insole is locked to the stepped portion to prevent the insole from being lifted.   The fishing footwear according to claim 1, wherein the main body includes stepped portions on both the toe side and the heel side.   The fishing footwear according to claim 1 or 2, wherein the inner is joined to the main body in the vicinity of the opening of the upper.   The fishing footwear according to any one of claims 1 to 3, wherein the main body is made of a polymer molded body containing a large number of closed cells, and the inner is provided with a soft rubber layer. A step of obtaining a main body having a step portion on the inner surface of the side wall and in the vicinity of the bottom surface by filling the mold with the polymer composition;
A step in which an insole is joined to the inner to form a sock;
A method of manufacturing footwear for fishing, comprising: a step in which the inner body and the insole are housed in a main body, and an edge portion of the insole is disposed below the stepped portion.   The manufacturing method according to claim 5, wherein the polymer composition contains a foaming agent, and the main body is formed by expansion of the polymer composition by foaming of the foaming agent.

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