KR102039730B1 - Shoe sole using Double rachel knitted fabric - Google Patents

Abstract

The present invention relates to a shoe sole fabric used as a midsole or insole of a shoe. More particularly, the present invention relates to a shoe sole fabric, wherein the fabric of the shoe sole is constructed using double raschel knitted fiber consisting of an upper layer, a middle layer and a lower layer, and a part of the upper portion of the middle layer protrudes above the surface of the upper layer, thereby preventing slipping of the shoe sole against the wearer′s sole, and improving weight distribution, joint protection, breathability, comfort and feeling of cushion.

Description

Shoe sole using Double rachel knitted fabric

The present invention relates to a shoe sole fabric used as a midsole or insole of a shoe, more specifically, the fabric of the sole is configured using a double-lassel knitting fibers consisting of an upper layer, an intermediate layer and a lower layer, the upper part of the intermediate layer above the surface of the upper layer A part of the invention relates to a shoe fabric that prevents slipping of the sole to the sole of the wearer and improves weight distribution, joint protection, breathability, comfort, and a feeling of cushioning.

In general, the three-layer double-lasel warp knitted fabric having excellent breathability and cushioning property refers to a knitted fabric comprising a surface layer, a back layer, and an intermediate layer connecting the surface layer and the back layer.

The general honeycomb double raschel warp knitted fabric consists of a surface layer, a back layer, and an intermediate layer connecting the surface layer and the back layer. In addition, the intermediate layer is woven with a plurality of intermediate yarns forming a loop on the surface layer and the back layer. In other words, the intermediate yarns are woven in a loop together with the surface yarns forming the surface layer and the backside yarns forming the back layer.

The surface layer usually uses a polyester multifilament bar, when used for the purpose of the shoe jacket, etc., the durability is low due to the decrease in strength due to the surface friction, easy to be polluted, there is a problem that the removal of contaminants is not easy, solve this problem Continuous research and development is required to do so.

Republic of Korea Patent Publication No. 10-2014-0090899 (2014.07.18.) Republic of Korea Patent Publication No. 10-1998-0084287 (1998.12.05.)

The present invention has been made in order to improve the problems according to the prior art of the shoe fabric, the conventional shoe fabric is simply composed of a plurality of layers of woven paper, or a configuration in which a cushioning material of rubber or synthetic resin material is laminated on the bottom of the fabric paper As a result, there was a problem of sweating easily at the wearer's foot;

In addition, there was a problem that the fatigue of the foot easily occurs due to the lack of cushioning on the sole;

In addition, the sole of the wearer is easily slipped from the shoe sole, causing a large problem of discomfort when walking or running, the main purpose is to provide a solution to this.

The present invention is to realize the desired object as described above,

In the sole fabric using a double-lasel knitted fibers composed of an upper layer, an intermediate layer and a lower layer, the double portion is configured such that the upper part of the intermediate layer formed by the intermediate fiber yarns protrudes above the surface of the upper layer formed by the upper fiber yarns. A shoe sole fabric using Raschel knitting fibers is presented.

Sole fabric using the double-lassel knitting fibers according to the present invention as described above is configured to protrude the upper portion of the middle layer above the surface of the upper layer, a ventilation space is formed between the sole and the upper layer is easy to sweat from the foot Effects that do not occur can be obtained;

A cushioning is also created by the upper portion of the middle layer protruding above the top layer surface, resulting in less fatigue of the foot;

In addition, when the upper portion of the intermediate layer is formed with a predetermined pattern, column or row, the effect of preventing the slip of the sole can be obtained.

1 is a perspective view showing an insole of a shoe made of a shoe sole fabric using double-lassel knitting fibers according to a preferred embodiment of the present invention.
Figure 2 is a side cross-sectional view showing a shoe sole fabric using double-lassel knitting fibers according to a preferred embodiment of the present invention.
Figure 3 is a side cross-sectional view showing the sole fabric using double-lassel knitting fibers according to a preferred embodiment of the present invention.
4 and 5 are graphs and test reports showing the results of testing the strength of the sole fabric using the double-lassel knitting fibers according to a preferred embodiment of the present invention.

The present invention relates to a shoe sole fabric used as a midsole or insole 10 of a shoe, in the sole fabric using a double-lassel knitted fabric consisting of an upper layer (10a), an intermediate layer (10b) and a lower layer (10c), the upper fiber yarn It relates to a shoe fabric using a double-lassel knitting fibers configured to have a shape in which the upper portion (10b-1) of the intermediate layer (10b) formed by the intermediate fiber yarns over the surface of the upper layer (10a) formed by .

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 4 showing embodiments of the present invention.

Sole fabric according to the present invention is the sole 30, the outsole, the middle sole 20, the middle sole 20, the insole (10, insole) formed sequentially from the bottom of the general shoe as shown in FIG. 10) can be used for the purpose.

First, the shoe sole fabric according to the present invention has a three-layer structure generally known as "double-lasel knitting fibers".

That is, the shoe fabric according to the present invention comprises an upper layer 10a, an intermediate layer 10b, and a lower layer 10c from the top to the lower direction as shown in Figure 2, the upper portion of the intermediate layer 10b having a length in the vertical direction The upper layer 10a is knitted and connected, and the lower layer 10c is knitted and connected to the lower portion of the intermediate layer 10b.

In addition, the present invention of the above configuration has a three-layer structure, excellent in the sense of cushioning can reduce the fatigue of the foot, excellent breathability and drainage has the effect of reducing the occurrence of sweat in the foot and easy sweat discharge. .

A more detailed description of the double-lassel knitting fibers will be replaced by known techniques, and in the following, a configuration corresponding to the points of the present invention will be described in detail.

Specifically, the present invention, in the double-lassel knitting fibers having a three-layer structure as described above, the upper portion of the intermediate layer (10b) formed by the intermediate fiber yarns over the surface of the upper layer (10a) formed by the upper fiber yarns The main point is that (10b-1) has a protruding shape.

That is, as described above, the intermediate layer 10b having the length of the intermediate fiber yarn in the vertical direction is configured to have a lower portion knitted with the lower layer 10c and an upper portion knitted with the upper layer 10a, wherein the surface of the upper layer 10a The upper portion 10b-1 of the intermediate layer 10b is protruded upward, thereby realizing the effect of increasing cushioning to the wearer's foot and reducing slippage.

In this case, as shown in FIG. 2, the upper portion 10b-1 of the intermediate layer 10b protruding upward from the surface of the upper layer 10a forms a ring shape and is exposed to the surface of the upper layer 10a, and the upper portion of the intermediate layer 10b. The portion 10b-1 imparts a cushion to the soles seated on the surface of the upper layer 10a, reduces slippage of the soles, and secures breathability to reduce sweating.

In more detail, as described above, the upper portion 10b-1 of the intermediate layer 10b may have a configuration in which the upper portion 10b is knitted with the upper layer 10a in various ways, if the upper portion 10b-1 has a shape protruding a predetermined height upward from the surface of the upper layer 10a. Preferably the upper part of the intermediate fiber yarn forming the intermediate layer (10b) is configured to be knitted and connected to the upper layer (10a); A lower portion of the intermediate fiber yarn forming the intermediate layer 10b is configured to be knitted and connected to the lower layer 10c; The fabric of the shoe sole is heat-treated, so that the upper fiber yarn of the upper layer 10a is contracted so that the upper portion 10b-1 of the middle fiber yarn of the middle layer 10b is gripped and protrudes above the surface of the upper layer 10a. Can be.

That is, the upper portion 10b-1 of the intermediate layer 10b of the configuration is configured such that the upper portion 10b-1 of the intermediate fiber yarn forming the intermediate layer 10b is knitted with the upper fiber yarn forming the upper layer 10a. The upper part 10b-1 of the intermediate fiber yarn has a state of protruding upward from the upper fiber yarn, and in this state, the upper fiber yarn is contracted by a predetermined heat treatment to hold the intermediate fiber yarn.

When the upper fiber yarns forming the upper layer 10a are configured to grip the intermediate fiber yarns by heat shrinkage as described above, the upper portion 10b-1 of the intermediate fiber yarn is positioned above the upper fiber yarn, The upper part 10b-1 of the intermediate fiber yarn may not be pressed down to the lower part of the upper fiber yarn even by a constant external force (such as the pressure of the sole or the friction of the sole).

Specifically, the shoe fabric of the above configuration is configured to be knitted in three layers and connected to each other of the upper layer (10a), the middle layer (10b) and the lower layer (10c) preferentially by a knitting machine. At this time, the upper portion 10b-1 of the intermediate fiber yarns forming the intermediate layer 10b forms a state protruding upward of the upper fiber yarns forming the upper layer 10a.

Thereafter, the three-layered shoe sole fabric is treated with a predetermined heat so that the upper fiber yarns forming the upper layer 10a are shrunk, so that the shrunk upper fiber yarns are the upper portion 10b-1 of the intermediate fiber yarns. Strongly grip the bottom of the c), so that the upper portion 10b-1 of the intermediate fiber yarns can always be projected upward of the top layer 10a.

In addition, when the intermediate layer 10b is gripped by the upper layer 10a by a predetermined heat treatment as described above, the upper fiber yarn may be made of various materials according to the judgment of those skilled in the art, and preferably, polyester The main component can be used.

That is, the upper fiber yarn may be made of polyester material, made of polyester drawn textured yarn (PDTY) of 50 to 250 denier made by twisting 36 to 48 strands of polyester material.

More specifically, since the upper fiber yarn of the configuration is made of 36 to 48 strands of polyester material twisted, even if the upper fiber yarn has the same or thicker thickness than the intermediate fiber yarn, the same as the upper fiber yarn and the intermediate fiber yarn When heat is applied, the upper fibrous yarn composed of a plurality of yarns can be shrunk larger, thereby realizing the effect of allowing the top fibrous yarn shrunk during heat treatment to strongly grip the intermediate fibrous yarn.

In connection with the above, it is preferable that the upper fiber yarn is made of twisted yarn 36-48 strands, and the upper fiber yarn made of the twisted yarn as described above has a thickness of 50 ~ 250 denier, the pressing force applied to the sole It is possible to prevent the upper layer 10a from being damaged by the excessive frictional force.

In addition, the contraction of the upper fiber yarn of the configuration is formed at the lower portion of the upper portion 10b-1 of the intermediate fiber yarn, the upper portion 10b-1 of the intermediate fiber yarn continues to protrude upward of the upper layer (10a) I can keep it.

That is, the upper portion 10b-1 of the intermediate layer 10b may protrude to the upper surface of the upper layer 10a while being firmly gripped by the contracted upper fiber yarn to realize a cushioning effect on the sole.

In connection with the above, the intermediate fiber yarns for forming the intermediate layer 10b may also be made of various materials according to the judgment of those skilled in the art, and it is preferable to use one mainly composed of the same polyester as the upper fiber yarns. Can be.

That is, the intermediate fiber yarn may be made of a polyester material, including a mono yarn of a polyester material of 50 ~ 200 denier.

At this time, the intermediate fiber yarns are configured to have the same or similar thickness as the upper fiber yarns, but is composed of mono yarns (one strand of yarn), less shrinkage than the upper fiber yarns consisting of a plurality of yarn strands during heat treatment, As a result, it is possible to realize the effect that the height change of the intermediate layer 10b, which occupies a substantial part of the sole thickness, is not large by heat treatment.

In addition, the intermediate fiber yarn is made of a polyester material of the same material as the upper fiber yarn, can increase the tightness of the upper layer (10a) and the intermediate layer (10b), and is configured to have the same or larger thickness than the upper fiber yarn, It is preferable that the intermediate fiber yarn having a length formed in the vertical direction is configured to be integral with the upper fiber yarn and to form the thickness of the sole.

In addition, when the intermediate fiber yarn is less than 50 denier, the thickness of the intermediate fiber yarn is too thin, the strength of the intermediate fiber yarn is somewhat insufficient, as a result, the sole is easily crushed and crushed by the pressing force of the sole, the intermediate fiber yarn exceeds 200 denier If the thickness of the intermediate fiber yarn is too thick, the strength of the intermediate layer 10b may be high, and as a result, the sole may become excessively hard. Therefore, the intermediate fiber yarn preferably has a thickness within the above range.

In addition, the lower fiber yarns forming the lower layer 10c may also be made of various materials according to the judgment of those skilled in the art. Preferably, the main fiber may be made of the same polyester as the intermediate fiber yarns.

That is, the lower fiber yarns may be made of polyester material, including mono yarns of polyester material of 20 to 40 denier.

At this time, the lower fiber yarns are configured to have a thickness thinner than the intermediate fiber yarns, and shrink more than the intermediate fiber yarns during the heat treatment, as a result of the intermediate fiber yarns in the state that the lower fiber yarns knitted with the longitudinal lower portion of the intermediate fiber yarns The effect of being able to be gripped tightly with the longitudinal lower part can be realized.

In connection with the above, when the upper fiber, the intermediate fiber and the lower fiber yarn according to the present invention is made of a polyester material as described above, the sole fabric can be configured to be heat-treated to an appropriate temperature according to the judgment of those skilled in the art Preferably, the tenter (TENTER) of 180 ~ 220 ℃ can be heat treated for 60 ~ 90 seconds.

That is, the shoe fabric of the configuration consisting of the upper layer (10a), the middle layer (10b) and the lower layer (10c) can be heat-treated while passing through the tenter (TENTER) heated to a temperature of 180 ~ 220 ℃ for 60 to 90 seconds. .

At this time, if the temperature of the tenter is less than 180 ° C., the contraction of the upper and lower fiber yarns is not smooth, and the holding force between the upper layer 10a and the intermediate layer 10b and the intermediate layer 10b and the lower layer 10c is somewhat insufficient. The problem of deterioration occurs, and when the temperature exceeds 220 ° C., a problem arises in that the lower fiber yarn having the thinnest thickness is deformed due to an excessively high heating temperature, so that the temperature of the tenter is preferably maintained within the above range.

In addition, the upper fiber yarn, the intermediate fiber yarn and the lower fiber yarn according to the present invention as described above is made of PDTY (Polyester Drawn Textured Yarn) as described above, when the heat treatment for 60 ~ 90 seconds at a temperature of 180 ~ 220 ℃, the The upper portion 10b-1 of the intermediate layer 10b is preferably configured to protrude to a height of 0.1 to 0.5mm above the surface of the upper layer 10a.

That is, the upper portion 10b-1 of the intermediate layer 10b has a ring shape and protrudes upward from the surface of the upper layer 10a. At this time, if the protrusion height is less than 0.1 mm, the protrusion height is too low and the upper fiber yarn Due to shrinkage, a problem occurs that the height of the upper portion 10b-1 of the intermediate layer 10b is excessively low, and when it exceeds 0.5 mm, the height of the protrusion of the upper portion 10b-1 of the intermediate layer 10b after the heat treatment is increased. The height of protruding height of the upper portion 10b-1 of the intermediate layer 10b may be high, since the upper portion 10b-1 of the ring-shaped intermediate layer 10b may be easily pressed by the pressing force and the frictional force of the sole. It is preferable to maintain the said range.

The following is a result of testing the physical strength of the shoe sole fabricated according to the preferred embodiment and the embodiment for producing a shoe sole fabric according to the present invention.

1. Manufacture of Double-Rassel Knitting Fiber

Using the double-lasel knitting machine, the upper layer 10a, the middle layer 10b, and the lower layer 10c are sequentially made of a shoe fabric.

At this time, the upper layer (10a) uses a top fiber yarn made of 150 denier PDTY (Polyester Drawn Textured Yarn) made by twisting 48 strands of polyester material, the middle layer (10b) is made of a polyester material of 80 denier An intermediate fiber yarn made of mono yarn is used, and the lower layer 10c uses mono yarn of 30 denier polyester material.

2. Heat treatment

The sole fabric made in the above process is passed through a tenter (TENTER) for dissipating heat at 200 ° C. for 70 seconds to thermally contract the upper fiber yarn, the intermediate fiber yarn and the lower fiber yarn to complete the manufacture of the heat-treated sole fabric.

[Exam 1]

A part of the shoe sole fabric prepared in Example 1 was cut to make a specimen having a width × length of 10 × 10 cm, and the specimen was compressed to 70% of the original thickness to measure the compressive strength and compression elongation. The results are shown in FIG.

In other words, when the sole fabric according to the present invention is compressed to the first 70% of the thickness, it has been confirmed that has a compressive strength of about 91 kPa, and has a compressive elongation of 3.14 mm, the result is the sole according to the present invention The fabric not only has excellent physical strength but also suggests a certain degree of action or excellence.

[Exam 2]

Part of the shoe sole fabric prepared in Example 1 was cut to make a specimen having a width × length of 10 × 10 cm, the specimen was compressed to 50% of the original thickness, the compressive stress was measured, and the results 5 is shown.

That is, the sole fabric according to the present invention is confirmed to have a compressive stress of about 26.9 kPa when the thickness is compressed to the first 50%, the above results indicate that the sole fabric according to the present invention has excellent physical strength. Suggest.

The above has been described with reference to a preferred embodiment of the present invention, but is not limited to the above embodiment, the person having ordinary skill in the art to which the present invention pertains through the above embodiments without departing from the gist of the present invention Can be implemented in a variety of changes.

10: insole 10a: top layer
10b: intermediate layer 10b-1: upper portion of intermediate layer
10c: lower layer 20: middle window
30: Outsole

Claims (7)

In the sole fabric using the double-lasel knitted fibers composed of an upper layer (10a) formed by the upper fiber yarn, an intermediate layer (10b) formed by the intermediate fiber yarn and a lower layer (10c) formed by the lower fiber yarn,
Intermediate fiber yarn forming the intermediate layer (10b) is composed of a mono yarn of polyester material of 50 ~ 200 denier, the upper portion of the intermediate fiber yarn is configured to be knitted and connected to the upper layer (10a), the lower portion of the intermediate fiber yarn Is configured to be knitted and connected with the lower layer (10c),
The fabric of the shoe sole is heat-treated, so that the upper fiber yarn is contracted so that the upper portion 10b-1 of the intermediate fiber yarn is gripped, and is configured to have a shape protruding above the surface of the upper layer 10a. Sole fabric using double-lasel knitting fibers.
delete The method of claim 1,
Upper fiber yarn forming the upper layer (10a),
Sole fabric using double-lassel knitting fibers, characterized in that made of polyester drawn textured yarn (PDTY) of 50 to 250 denier made by twisting 36 to 48 strands of polyester material.
delete The method of claim 1,
Lower fiber yarns forming the lower layer 10c,
Sole fabric using double-lassel knitting fibers, characterized in that made of 20-40 denier mono yarns.
The method according to any one of claims 3 to 5,
Fabric of the sole,
Shoe fabric using a double-lassel knitting fibers, characterized in that configured to heat the tenter (TENTER) of 180 ~ 220 ℃ for 60 ~ 90 seconds.
The method of claim 6,
The upper portion 10b-1 of the intermediate layer 10b is
Shoe fabric using a double-lassel knitting fibers, characterized in that configured to protrude to the height of 0.1 ~ 0.5mm above the surface of the upper layer (10a).

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