KR101337359B1 - Shoelace with excellent tensile strength - Google Patents

Abstract

The present invention provides a shoelace comprising a core yarn and a shoelace cover covering the core yarn, wherein the core yarn is woven with a plurality of aramid filaments and the shoelace cover is woven with a plurality of polyester filaments. A shoelace according to the present invention has improved tensile strength and can be used for saving lives or falling prevention during outdoor activities or emergency. Furthermore, the shoelace according to the present invention is easily knotted, thereby improving user convenience.

Description

Shoelace with excellent tensile strength

The present invention relates to shoelaces (hereinafter referred to as "shoelace"), such as hiking boots, more specifically, the tensile strength, that is, excellent tensile strength to replace the rope when an emergency situation occurs during outdoor activities The present invention relates to shoelaces useful for lifesaving purposes or to maintain their weight to prevent falling (hereinafter referred to as "self-securing use").

Conventionally, the string is composed of the screening and the strings wrapped around the screening, the screening is cross-weaved 16 zigzag form each other in a four-ply strands eight yarns of 300 denier polyester filament woven weaving machine stringing machine It has a structure of a weight hunting tubing type, and the cord blood has a structure of a 40 weight hunting type cross-woven in a zigzag form in a weaving machine, which is a four-ply strand in which four strands of 300 denier polyester filaments are braided. Overall, a shoestring, which is a hunting strap type structure, has been used.

However, the conventional shoelaces are made of polyester filaments only, but can implement various colors with back dye, but there is a problem that the tensile force is as low as 131kg.

When the tensile force is about 131kg, an adult man with a weight of 80kg can barely hang, and a slight recoil may be applied or the string may be broken when time passes.In case of emergencies in outdoor activities, There was a limit to use for self-secured use.

Another conventional string is composed of the screening and the silk string covering the screen, the screening cross weaving each other in a zigzag form in a weaving machine that is 16 three-ply strands of 300 denier polyester filament 3 strands plywood It has a structure of 16 chubby string type, and the fleece is zigzag form in a weaving machine that is a 16-ply strand consisting of three strands of 300 denier polyester filaments and a 16-ply strand of 300 denier polyester filaments A string having a 32-ply pretzel type structure cross-woven into a lobe, and a four-wire type pretzel structure as a whole has been used.

However, the prior art string is composed of only polyester filaments can implement a variety of colors with a back dye, but there was a problem that the tensile force is as low as 135kg.

When the tensile force is about 135kg, an adult man with a weight of 80kg can barely hang, and if a little recoil is applied or a string breaks over time, an emergency situation occurs during outdoor activities. There was a limit to use for self-secured use.

Another conventional string is composed of the screening and the silk string covering the screen, the screening cross weaving each other in a zigzag form in a weaving machine that is 16 three-ply strands of 300 denier polyester filament 3 strands plywood It has a structure of 16 chubby string type, and the silk thong has a 32 chubby string type structure cross-woven in a zigzag form in a weaving machine that is a three-ply strand in which three strands of 300 denier polyester filaments are braided. In general, a shoelace having a 32 weight string type structure has been used.

However, the prior art string is composed of only polyester filaments can implement a variety of colors with a back dye, but there was a problem that the tensile force is as low as 175kg.

When the tensile force is about 175kg, an adult man with a weight of 80kg can hang.However, if a recoil is severely applied or a string breaks over time, an emergency situation occurs during outdoor activities. There was a limit to using it for securing use.

The first object of the present invention is to provide a shoelace useful for lifesaving use or self-securing use when an emergency situation occurs during outdoor activities due to excellent tensile strength.

The second object of the present invention is to provide a silky string having excellent tensile strength and excellent property of knot unwinding at the time of knotting (hereinafter abbreviated as "knotability").

In order to achieve the above object, in the present invention, the screening part of the cord is composed of a plurality of aramid filaments, and the band of the cord is composed of a plurality of polyester filaments, thereby improving the tensile strength of the cord and at the same time. It also allows you to give a variety of colors.

In addition, the present invention is to ensure that the five-ply strand constituting the string of the cord to improve the knotability of the string is projected in a whirlwind shape to maintain a constant interval on the outer surface of the string.

The shoelace according to the present invention has an excellent tensile force and an emergency situation occurred during outdoor activities, but if there is no separate rope, it can be used for the purpose of lifesaving or self-secure by replacing the rope.

In addition, the shoelace according to the present invention is also excellent in knotability and is convenient to use as a shoelace.

1 is a schematic cross-sectional view of a shoelace according to the present invention.
Figure 2 is a perspective picture of the shoelace according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, the string according to the present invention is composed of the screen (C) and the string (S) wrapped around the screen (C), as shown in Figure 1, the screen (C) is a plurality of aramid filaments cross each other , It is a woven structure, the string (S) is a structure in which a plurality of polyester filaments cross each other, woven.

1 is a schematic cross-sectional view of a shoelace according to the present invention.

In a more preferred embodiment of the present invention, the screening (C) is a combination of eight three-ply strands in which three strands of aramid filament of 1,000 denier and eight four-ply strands in which four strands of aramid filament of 1,000 denier are alternately zigzag-shaped. The cross-weave has a woven structure, and the string cord (S) has 12 five-ply strands in which five 300 denier polyester filaments are plyed together and eight two-ply strands in which two 300-denier polyester filaments plywood are alternately zigzag-shaped. It is a cross-woven structure.

Shoelace according to the present invention is preferably composed of 55 to 70% by weight of the screening and 30 to 45% by weight of the braid.

If the screening content is less than 55% by weight, the tensile strength of the string is lowered, which makes it unsuitable for use in lifesaving or self-securing applications. If the thickness of the string is less than 30%, it is difficult to express various colors and the knot is also lowered.

In the preferred embodiment of the present invention described above, the five-ply strands constituting the string skin are formed to form a protruding portion (1) protruding in a whirlwind shape to maintain a predetermined interval on the outer surface of the string as shown in FIG. It is more preferable to improve the knotability of.

Since the aramid filaments forming the screening of the laces according to the present invention are inferior in flexibility, the problem that the knotness of the laces is deteriorated can be improved by forming the protrusions 1.

Figure 2 is a perspective photo of the shoelace according to the present invention.

As described above, since the string according to the present invention is made of aramid filaments having excellent tensile strength, the string is excellent in tensile strength and at the same time, S is made of polyester filaments having excellent dyeability. Various color expressions are possible.

Hereinafter, through the examples and comparative examples look at in more detail the manufacturing method of the shoelace according to the present invention and the various physical properties of the prepared shoelace.

However, the protection scope of the present invention is not limited only to the following examples.

Example 1

Eight triplet strands (synthetic compounds) of three 1,000 denier aramid filaments (trade name "Heracron" of Kolon Industries Co., Ltd.) and eight tetrameric strands (synthetic compounds) of four 1,000 denier aramid filaments. Zigzag (Alternatively) is supplied to all the weights of a string production machine (woven machine) having 16 weights to cross and weave the three strands (synthetic) and the four strands (synthetic) to examine the string. (C) is prepared.

Therefore, the produced screening (C) consists of 56 aramid filaments of 1,000 denier.

Next, twelve five-ply strands (synthetic materials) in which five 300 denier polyester filaments were braided were supplied in a zigzag to 12 weights of a weaving machine having 40 weights, and two 300 denier polyester filaments were braided. Supplied 8 hap strands (synthesis) in zigzag only to 8 vertebrae having 40 vertebrae, and crosses and weaves the 5 hap strands (synthetic) and 2 haptic strands (synthetic). ) By producing a silk thong (S) on the final product was produced.

As a result, the produced silk thong (S) is composed of 76 300 denier polyester filaments.

As described above, when manufacturing the sticky skin (S), the 5-ply strand (synthesis) constituting the silky skin was woven so as to protrude at regular intervals on the outer surface of the silky skin.

As the tension of the string produced as described above is 440kg, it is sufficient to be used for life-saving or self-securing purposes in an emergency situation. Knotting was also excellent.

In addition, the prepared laces consisted of 62% by weight of screening (C) and 38% by weight of skinny string (S).

Example 2

16 pieces of three-ply strands (synthetic material) of three 1,000 denier aramid filaments (trade name "Heracron" of Kolon Industries Co., Ltd.) are supplied to all weights of a cord-weaving machine (woven loom) having 16 weights. To prepare a screening (C) of a 16-string tong-type shoe string.

Therefore, the produced screening (C) consists of 56 aramid filaments of 1,000 denier.

Next, twelve five-ply strands (synthetic materials) in which five 300 denier polyester filaments were braided were supplied in a zigzag to 12 weights of a weaving machine having 40 weights, and two 300 denier polyester filaments were braided. Supplied 8 hap strands (synthesis) in zigzag only to 8 vertebrae having 40 vertebrae, and crosses and weaves the 5 hap strands (synthetic) and 2 haptic strands (synthetic). ) By producing a silk thong (S) on the final product was produced.

As a result, the produced silk thong (S) is composed of 76 300 denier polyester filaments.

As described above, when manufacturing the sticky skin (S), the 5-ply strand (synthetic) forming the sticky skin was woven to protrude at regular intervals on the outer surface of the sticky skin.

The cord tension produced as described above was 419 kg, which was sufficient to be used for life-saving or self securing purposes in emergencies, and was able to easily give various colors in a dye-back manner to the cord skin. Knotting was also excellent.

In addition, the prepared string was composed of 58% by weight of the screening (C) and 42% by weight of the string (S).

Comparative Example 1

Eight four-ply strands (synthetic yarns) in which four 300 denier polyester filaments are braided are supplied and weaved only to eight weights of a new string making machine (woven machine) equipped with 16 weights. ).

As a result, the prepared screening (C) consists of 32 strands of 300 denier polyester.

Next, 20 four-ply strands (synthetic yarns) in which four 300 denier polyester filaments were braided were alternately supplied and woven only to 20 weights of the weaving machine having 40 weights. ) To prepare the final product, the string.

Therefore, the cord filament (S) produced is composed of 80 300 denier polyester filaments.

As the tension of the string produced as described above is 131kg, it was not enough to be used for lifesaving or self securing in case of emergency.

Comparative Example 2

16 pieces of three-ply strands (synthetic yarns) in which three 300-denier polyester filaments are braided are supplied to all weights of a cord-making machine (woven machine) equipped with 16 weights, and weaving is carried out. C) is prepared.

Therefore, the produced screening (C) consists of 48 polyester filaments of 300 denier.

Next, twelve three-ply strands (synthetic material), in which three 300-denier polyester filaments were braided, were supplied in a zigzag to 16 weights of a loom having 32 weights, and eight 300-denier polyester filament strands were supplied. Supplied with zigzag only in 16 weights of the weaving machine equipped with 40 weights, crossing and weaving the 3 strands (synthetic material) and 1 strand to produce a silk thong (S) on the screening (C), the final product Was prepared.

As a result, the produced silk thong (S) is composed of 64 300 denier polyester filaments.

As the tension of the cord prepared as described above was 135 kg, it was insufficient to be used for life-saving or self securing applications in emergencies.

C: judging of the string
S: Sticky Skin
1: The part where the five gob strands which comprise a sticky skin protruded

Claims (4)

In the string consisting of the screening (C) and the silk thong (S) surrounding the screening (C), the screening (C) is a structure in which a plurality of aramid filaments cross each other, weaving, the silk thong (S) Is a structure in which a plurality of polyester filaments cross each other and are woven, and the screening (C) is a 4-ply strand 8 in which three triple strands of 1,000 denier aramid filaments are plyed together and four strands of 1,000 denier aramid filaments are plywood 8 Dogs alternately intersect in a zigzag form, and have a woven structure, and the fleece (S) is a two-ply strand 8 in which five 5-ply 300-denier polyester filament plywood and two 2-ply 300-denier polyester filament plywood 8 Excellent stretch force, characterized in that the dog is alternating in a zigzag form alternately weaving.

delete The cord of claim 1, wherein the cord is composed of 55 to 70% by weight of screening (C) and 30 to 45% by weight of cord rope (S). According to claim 1, wherein the five strands constituting the string (S) is protruding in a whirlwind shape to maintain a constant interval on the outer surface of the string to form a protruding portion (1) characterized in that Slippery.

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