JPH07213301A - Rubber-soled tabi (socks) and their production and rubber-soled tabi (socks) sole - Google Patents

Abstract

PURPOSE:To provide rubber-soled TABI (socks) which are comfortable to wear, permits easy working, have stability and shape retentivity particularly in rear sole parts, have ease of moving and wearing in front sole parts, permit curving of plantar arch parts and have durability and a process for production of such socks and a sole. CONSTITUTION:The rubber-soled TABI (socks) have the rear sole part 3 which corresponds to the sole part behind the plantar arch part, has an adhesive margin 3a for the front part thereof and is formed to hardness, for example, about 50 to 70 deg. measured by a Shore hardness meter, higher than the hardness of the front sole part 4 and the front sole part 4 which corresponds to the front sole part, has an adhesive margin 4a in the rear part thereof and is formed to hardness, for example, about 40 to 55 deg. measured in the same manner, lower than the hardness of the rear sole part. The vulcanized rear sole part 3 is adhered to the sole part of the uppers and the front sole part 4 in an unvulcanized state is adhered thereto. A reinforcing piece 5 of an unvulcanized state is adhered to both joints and is then vulcanized, by which the rubber-soled TABI (socks) are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subterranean construction that can be used for civil engineering, construction sites, agricultural work, and various other purposes, a method for producing the subterranean construction, and a subterranean construction used therefor.

[0002]

2. Description of the Related Art Conventional socks have been manufactured by attaching an upper obtained by stitching cloth and an underground sole made of rubber or a synthetic resin by sticking or sewing. Sticking by sticking means that the upper is fished into an aluminum foot and the adhesive is applied to the upper edge and the bottom.
On the other hand, this is a manufacturing method in which the adhesive surface of unvulcanized underground rubber is treated with a solvent to form a paste, and both are pasted and then vulcanized and molded. Further, the sewn-type fixation is a manufacturing method in which an upper is mainly fished into an aluminum shoe and then the vulcanized (press) -molded base is attached with an adhesive and a sewing machine is used. Alternatively, it is a manufacturing method in which the bottom rubber of the press-vulcanized underground is attached only by sewing without fishing the sewn upper and without using an adhesive (in recent years, due to lack of manpower and cost, Many manufacturing methods). In order to make it easier for the arch to come into close contact with the sole of the foot, a subterranean bottom is provided with a curved upper part near the arch.However, in order to maintain such a curved surface, It is necessary to perform vulcanization molding.

[0003]

Accordingly, among the conventional manufacturing methods, the sticking type manufacturing method can surely obtain a strong fixed state, but it is necessary to bond in an unvulcanized state. However, it was not possible to perform a forming process such that the arch portion is curved and formed into an arch shape.
In addition, in the manufacturing method by the sewn type, it is possible to vulcanize and form into various shapes freely so that the arch part of the bottom of the arch is curved in an arch shape, but the vulcanized rubber bottom and the upper side are firmly formed. Since it is difficult to adhere, it is reinforced by sewing with a sewing machine, but the adhesion at the edges such as the toe side was easy to peel off. Further, since the bonding and stitching work is required, it takes time and effort for manufacturing, and there is a problem that water easily enters from the sewn portion.

[0004] Therefore, the present inventor, in addition to solving the above-mentioned problems, pays attention to the point that the required shape and adhesive strength are different between the toe side basement ridge or the front bottom and the heel side basement ridge or the rear bottom. At the same time, the rear bottom part has an appropriate hardness to increase stability during work, and when the vicinity of the arch part is curved upward, the curved state can be maintained, and the front bottom part is Focusing on the fact that it has an appropriate degree of flexibility to ensure good maneuverability and can be worn more easily, and at the same time, it firmly secures the edge of the bottom of the basement and the front bottom where the upper is easy to peel off. It is intended to provide a highly durable basement that can be adhered to.

[0005]

In order to solve the above-mentioned problems, the present invention provides a rear bottom part corresponding to a bottom part rearward of the vicinity of the arch part and having a hardness higher than that of the front bottom part, and an arch. The front bottom part, which corresponds to the front of the bottom part and has a lower hardness than the rear bottom part, is adhered to the upper bottom part, and both front and rear bottom parts are closely adhered in the vicinity of the arch part. It is characterized by the fact that it was constructed underground. In the vicinity of the arch part, the reinforcing piece can be adhered across both front and rear bottom parts. This bonding may be performed from the outside of both front and rear bottom portions, or may be performed inside.

Further, the present invention corresponds to a bottom portion rearward of the vicinity of the arch portion and a rear bottom portion vulcanized and molded so that the hardness thereof is higher than that of the front bottom portion, and a bottom portion forward of the vicinity of the arch portion. And, the front bottom part in the unvulcanized state formed so as to have a lower hardness than the rear bottom part, is bonded to the upper bottom part, and is also characterized by a vulcanization molding method for each underground. It is a thing.

In the above-mentioned manufacturing method, the front bottom portion may be vulcanized in advance. Further, the rear bottom part and the front bottom part can be sequentially bonded to the upper bottom part, but the vulcanized rear bottom part and the vulcanized or unvulcanized front bottom part are bonded to each other near the arch part. It is also possible to manufacture a subterranean floor by forming a sheet-shaped bottom, adhering this to the upper bottom, and vulcanizing and molding it as required. In any case, it is also possible to manufacture an underground base by vulcanizing and molding the whole after adhering the reinforcing pieces in the unvulcanized state or the vulcanized state across both front and rear bottom parts in the vicinity of the arch part. it can.

The present invention further provides a subterranean bottom which is a component part of the above-mentioned subterranean and is used in the above-mentioned manufacturing method, in which the rear bottom part of the above-mentioned constitution and the front bottom part of the above-mentioned constitution are close to each other near the arch part. It is also characterized by being glued and provided as a single bottom. This bottom may also be configured such that the reinforcing pieces in the unvulcanized state or the vulcanized state are adhered across the front and rear bottom portions in the vicinity of the arch portion.

[0009]

[Function] By bonding the vulcanized material to the rear bottom, it is possible to make the bottom harder than the front bottom and to have stability and shape retention. The front bottom is harder than the rear bottom. Can form a low bottom. In addition, if the front bottom portion is adhered in a non-vulcanized state and then vulcanized, the adhesive strength is further increased, and there is no risk of peeling even in a state having motility.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a first embodiment, in which the underground 1 according to the present invention is sewn with cloth.
Is hung on the lower surface of the insole 2, and the rear bottom 3 formed by vulcanization is bonded to the rear of the bottom of the suspended upper 1, and the front bottom of the vulcanized state is further attached to the front of the bottom. 4 is adhered and vulcanized to produce an underground structure. The rear bottom portion 3 is formed by vulcanizing unvulcanized rubber, and the front bottom portion 4
It is desirable that the hardness is relatively higher than that. For example, the hardness is about 50 ° to 70 °, preferably about 55 ° to 65 ° with a Shore hardness meter. The arch part or the front part thereof, for example, the vicinity of the line I-I in FIG. 1 as a boundary, the adhesion margin 3a of an appropriate width is formed in front of the arch part, and the arch part 3b is formed in an upwardly curved arched shape. It is the composition of the bottom half of the whole. The arch part 3b is the rear bottom part 3
While being vulcanized from the unvulcanized rubber, it can be press-molded to be curved upward, and the rear bottom portion 3 formed by this vulcanization molding can be formed.
Adheres to the rear part of the bottom of the upper 1. The rear bottom 3
Can be formed so that its peripheral edge can be raised and adhered similarly to the front bottom 4, and the rear bottom 3 is pre-adhered and then sewn to the upper 1 bottom or the vicinity of the peripheral edge. However, only adhesive is used to prevent infiltration of water.

The front bottom portion 4 is made of unvulcanized rubber and preferably has a relatively lower hardness than the rear bottom portion 3, for example, 35 ° to 55 ° by a Shore hardness tester.
Before and after, preferably about 40 ° to 50 °. It is preferable to match the front part of the bottom of the basement and to raise the peripheral edge part 4b slightly upward so as to have a shape with a large number of adhesive surfaces. The vicinity of the arch part, for example, near the line I-I in FIG. And the edge portion thereof is configured as an adhesion margin 4a. The front bottom portion 4 made of unvulcanized rubber has the rear bottom portion 3 bonded to the bottom portion of the upper 1, and the upper surface of the front bottom portion 4 is treated with a solvent such as gasoline to form a paste. The bottom 2 is adhered via the adhesive applied, and the front margin 4 a of the front bottom 4 is adhered to the upper side of the margin 3 a of the rear bottom 3 and then vulcanized to make a stronger bond.
This vulcanization may be performed by heating the entire bottom of the ground or heating only the front part.

The rear bottom portion 3 and the front bottom portion 4 are bonded to each other at a curved middle portion of the arch of the arch or in the vicinity of the front of the arch, and the bonding margins 3a and 4a are formed in a staggered manner. It is preferable to bond the lever joints with an adhesive, and use either of the bonding margins 3a and 4a for the insole 2.
It is also possible to bond them on the side and one of them on the outside, but it is even more preferable to bond them so that the bonding margin 4a of the front bottom portion 4 is on the outside. The bonding margins 3a and 4a can be formed to be thick with each other. The anti-slip or reinforcing concavo-convex shape formed on the lower bottom surface of the rear bottom portion 3 and the front bottom portion 4 can be any shape.

According to the above-mentioned basement, since the rear bottom part 3 can be formed with a hardness higher than that of the front bottom part 4, grounding, walking, etc. can be performed stably, and moreover, the arch portion 3b is curved upward. The front surface 4 can be formed to have a relatively low hardness, and at the same time, the front bottom portion 4 can be formed to have a relatively low hardness, so that the flexibility of bending movement is increased, the mobility is improved, and the ground surface can be used in a place where the footing is poor. Adhesion and securing performance are improved, walking can be made easier and stable, and ease of wearing is improved so that wearing fatigue does not occur. Moreover, the arch portion of the rear bottom portion 3 can be curved upward so as to retain the shape, and the shape-fitting feeling can be increased to retain the shape. In this case, regardless of the difference in the foot shape. It is possible to keep the end edge portion on the toe side, which is particularly easy to peel off, in a strong adhesive state while not causing a feeling of friction and wearing.

In the above embodiment, the front bottom portion 4 may be vulcanized and molded, but if the unvulcanized state is adhered and vulcanized, the adhesion integrity is improved. In addition, the rear bottom part 3 and the front bottom part 4 in the above-mentioned embodiment are previously bonded to each other with their bonding margins 3a and 4a to form a single underground subsurface, and the appearance is, for example, an underground subsurface similar to that shown in FIG. Can be provided. This one piece of underground slab may be directly adhered to the bottom of the upper 1 and vulcanized on it to form an underground slab. In this case as well, the vulcanized front bottom portion 4 can be used by adhering it, but it is the same that the vulcanization after adhering the unvulcanized state is higher.

FIGS. 3 and 4 show another embodiment of the above embodiment, and FIG. 3 shows a bonding margin 3 of the rear bottom portion 3 and the front bottom portion 4 bonded to the bottom of the upper 1 as in the above embodiment.
A strip-like reinforcing piece 5 from the outside over the a and 4a portions.
Is coated and adhered. The reinforcing piece 5 may be vulcanized, but if it is in an unvulcanized state and is adhered and then vulcanized, the adhesion is further strengthened and the adhesion margins 3a and 4a are separated by any chance. Can be prevented. Further, in FIG. 4, a reinforcing piece 5 is adhered to the inside of the adhesion margins 3a, 4a between the rear bottom portion 3 and the front bottom portion 4 (on the side of the inner bottom 2). The reinforcing piece 5 may be adhered to the insole 2 and the front and rear bottom parts 3 and 4 may be adhered to be integrated. In any of the embodiments shown in FIGS. 3 and 4, the reinforcing piece 5 also reinforces the bottom portion thereof, for example, by reinforcing the upward curved shape of the arch 3b to further strengthen the shape retention. obtain.

5 and 6 show another embodiment different from the above. In this example, the inner portion of the front bottom portion 4 is widened by forming the joint portion between the rear bottom portion 3 and the front bottom portion 4 in an inclined line state, and the inner foot side is formed on the inner side portion of the front bottom portion 4. Reinforcing surface 4c that corresponds to the side surface portion including the base portion of the thumb is extended. If the front bottom portion 4 formed in this way is used, as shown in FIG. 6, in the state where the rear bottom portion 3 is adhered and the front bottom portion 4 is adhered and vulcanized and molded, the reinforcing surface 4c is formed at the most easily damaged portion. can do. This reinforcing surface 4c can be formed in another portion as required.

[0017]

As described above, according to the present invention, the rear bottom portion, which is more required to have stability and shape retention, and the front bottom portion, which is more strongly required to have flexibility, mobility and wearability. However, it is possible to provide a subterranean condition in a satisfactory state at the same time, and at the same time, the edge-prone part where the peeling phenomenon is likely to occur does not peel off and firmly adheres to withstand long-term use and intense work. At the same time, it is possible to provide a basement where the arch portion is curvedly formed to provide a good fit and an excellent wearing feeling, and which does not cause a rubbing wear or a feeling of discomfort regardless of a difference in foot shape.

[Brief description of drawings]

FIG. 1 is a bottom view of each underground according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a vertical cross-sectional view of an underground structure according to another embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of an underground structure according to still another embodiment of the present invention.

FIG. 5 is a bottom view of the underground according to still another embodiment of the present invention.

FIG. 6 is a schematic side view of each underground of FIG.

[Explanation of symbols]

 1 Upper 2 Middle Bottom 3 Rear Bottom 3a Adhesion Allowance 3b Arch Block 4 Front Bottom 4a Adhesion Allowance 4b Peripheral 4c Reinforcing Surface 5 Reinforcement Piece

Claims (8)

[Claims] 1. A rear bottom part corresponding to a bottom part rearward of the vicinity of the arch part and having a hardness higher than that of the front bottom part, and a front bottom part corresponding to the vicinity of the arch part and a hardness higher than that of the rear bottom part. A basement that has a lower bottom and a front bottom that are adhered to the upper bottom, respectively, and both front and rear bottoms are closely attached near the arch. 2. The subterranean soil according to claim 1, wherein a reinforcing piece is adhered across both front and rear bottom portions in the vicinity of the arch portion. 3. A rear bottom part that is vulcanized so as to correspond to a bottom part rearward of the vicinity of the arch part and has a hardness higher than that of the front bottom part, and a bottom part that corresponds to the front part of the bottom part near the arch part and rearward. The front bottom part in the unvulcanized state formed so that the hardness is lower than the bottom part, is bonded to the upper bottom part,
Manufacturing method for each underground including a method of vulcanization molding on it. 4. A rear bottom part which is vulcanized so as to correspond to a bottom part behind the arch part and has a hardness higher than that of the front bottom part, and a bottom part which corresponds to the bottom part in front of the arch part and which is rearward. A manufacturing method for each underground, including a method in which a front bottom portion vulcanized and molded so that the hardness thereof is lower than that of the bottom portion is adhered to an upper bottom portion and vulcanized and molded as necessary. 5. A rear bottom part that is vulcanized so as to correspond to a bottom part rearward of the vicinity of the arch part and has a hardness higher than that of the front bottom part, and a bottom part that corresponds to the bottom part in front of the vicinity of the arch part and rearward. The vulcanized or unvulcanized front bottom formed so that the hardness is lower than the bottom is adhered to each other in the vicinity of the arch to form a single bottom, which is adhered to the upper bottom as necessary. A method of manufacturing each underground including a method of vulcanizing and molding accordingly. 6. The vulcanization molding method according to claim 3, wherein unvulcanized or vulcanized reinforcing pieces are adhered across both front and rear bottoms in the vicinity of the arch, and then vulcanized and molded. Manufacturing method for each underground as described in Kaichi. 7. A rear bottom part which is vulcanized to correspond to a bottom part rearward of the vicinity of the arch part and has a hardness higher than that of the front bottom part, and a bottom part which corresponds to the bottom part in front of the vicinity of the arch part and rearward. A vulcanized or unvulcanized front bottom formed so that its hardness is lower than that of the bottom, and is bonded to each other near the arch to form a single bottom. 8. The underground slab according to claim 7, wherein reinforcing pieces in a non-vulcanized state or a vulcanized state are adhered across both front and rear bottom portions in the vicinity of the arch portion.