KR102580310B1 - flame retardant fabric for safety protective clothing with excellent elasticity and washing durability and manufacturing method thereof - Google Patents

Abstract

A flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to the present invention can have a structure in which cotton spun yarn is used as the core, a covering yarn with aramid spun yarn as a sub-yarn is used as the warp yarn, and the weft yarn is arranged alternately with cotton spun yarn and aramid spun yarn. At this time, in the covering yarn, the cotton spun yarn can have a twisting direction in a first direction, and the aramid spun yarn can have a twisting direction in a second direction. And the covering yarn can have a twisting direction in the first direction.

Description

Flame retardant fabric for safety protective clothing with excellent elasticity and washing durability and manufacturing method thereof}

The present invention relates to a fabric for safety protective clothing, and more specifically, to a safety protective clothing that has high washing durability for flame retardancy, has excellent elasticity and is comfortable to wear, and contains cotton fibers, which can provide excellent comfort. It relates to fabric and its manufacturing method.

Wearing safety protective clothing at industrial sites is recognized as the most economical measure to reduce injuries and casualties. The number of casualties due to not wearing safety protective clothing is 2.6 on average in OECD countries, while in Korea it is 7.3, which is a very high level. .

Domestic industrial safety protection textile products are mostly made of general fiber materials, excluding firefighting suits and special workwear. If industrial safety regulations are strengthened in the future, market growth is expected to focus on high-performance products. Korea is producing materials, weaving, knitting, non-woven fabrics, and dyeing Since we have the element technology and manufacturing base for design, etc., it is time to invest and make efforts to conclude a mutual certification agreement so that we can receive overseas certification domestically.

As of 2013, the domestic firefighting and disaster prevention market was worth approximately 1.65 trillion won, comprised of firefighting equipment (0.45 trillion won) and disaster prevention equipment (1.2 trillion won) (Source: Safety Industry Revitalization Plan 2015). In order to improve structural workability, the importance of personal protective clothing is increasing, and the protective clothing market size is also increasing accordingly.

Firefighters suffer frequent damage to their safety protective clothing due to these frequent dispatches, and due to various contaminants, the performance and wearing comfort of industrial safety protective clothing significantly deteriorates over time. For this reason, they wash it to keep their safety protective clothing clean. proceed.

However, due to the nature of fire retardant clothing, a special washing machine must be used. Otherwise, as the number of washings increases, the flame retardancy significantly decreases. Therefore, in the field, hand washing is often done to maintain the flame retardancy of the fabric. Therefore, there is a need to develop industrial safety protective clothing products that can improve the shortcomings (washing durability) of existing products.

In the case of existing industrial safety protective clothing, the aramid mixing ratio is high to ensure flame retardancy, which presents limitations in fit and comfort. In other words, in the case of existing industrial safety protective clothing, there is a problem of poor mobility, flexibility, and comfort due to the small amount of cotton used compared to the proportion of aramid.

In addition, in the case of current industrial safety protective clothing, there is a problem of fatigue accumulation and reduced activity efficiency due to high temperature and high humidity conditions when working for long periods of time. Therefore, in the case of firefighters, who are consumers, the demand for improvement in activity appears to be the greatest among the demands for improvement in industrial safety protective clothing.

Accordingly, the technical problem to be solved by the present invention is to provide a method of manufacturing a safety protective clothing fabric that is basically flame retardant, can provide excellent fit and comfort, and has excellent washing durability with little damage to flame retardancy after washing. will be.

Another technical problem that the present invention aims to solve is to provide a safety protective clothing fabric and a manufacturing method thereof that can provide high production efficiency by simplifying both the production process of the fabric and safety protective clothing.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The flame-retardant fabric for safety protective clothing with excellent elasticity and washing durability according to an embodiment of the present invention to solve the above technical problem has cotton spun yarn as the core yarn and a covering yarn with aramid spun yarn as the sub-yarn as the warp yarn, and the weft yarn as the cotton spun yarn. and aramid spun yarns may have a structure in which they are arranged alternately.

In the covering yarn, the cotton spun yarn has a twisting direction in a first direction, the aramid spun yarn has a twisting direction in a second direction, and the covering yarn preferably has a twisting direction in the first direction.

In the covering yarn, the sum of the linkage number of the cotton spun yarn and the linkage number of the covering yarn is preferably 170 to 220.

In the covering yarn, the draft ratio of the cotton spun yarn and the aramid spun yarn is preferably 1:1.5 to 1:1.8, and the count equal ratio of the cotton spun yarn and the aramid spun yarn is preferably 0.5 to 1.

A flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to another embodiment of the present invention to solve the above technical problem is a multi-layer material comprising an outer skin layer, an inner skin layer, and at least one intermediate layer provided between the outer skin layer and the inner skin layer. may be appointed to a position.

The at least one intermediate layer may include a layer having a structure in which aramid spun yarn is used as a core yarn and a covering yarn with aramid spun yarn as a sub-yarn is used as a warp yarn, and the weft yarn is arranged alternately with aramid spun yarn and cotton spun yarn.

In the covering yarn, the cotton spun yarn may have a twisting direction in a first direction, the aramid spun yarn may have a twisting direction in a second direction, and the covering yarn may have a twisting direction in the first direction.

In the covering yarn, the sum of the linking number of the cotton spun yarn and the linking number of the covering yarn is 170 to 220, the draft ratio of the cotton spun yarn and the aramid spun yarn is 1:1.5 to 1:1.8, and the cotton spun yarn and the above yarn are 1:1.5 to 1:1.8. It is preferable that the count ratio of the aramid spun yarn is 0.5 to 1.

The skin layer and the one layer have warp yarns of the same diameter, and the first diameter of the cotton spun yarn and the covering yarn is larger than the second diameter of the weft yarn of the skin layer,

The ratio of the number of weft yarns of the outer skin layer and the one layer is preferably determined according to the ratio of the warp yarn length due to the difference in diameter of the weft yarns of each layer.

The at least one intermediate layer may include a first intermediate layer forming a first embossed structure between the outer skin layer and the inner skin layer. At this time, the outer skin layer and the inner skin layer may have a first stretch ratio in the weft direction. The first intermediate layer preferably has a second stretch rate in the weft direction that is smaller than the first stretch rate. And the embossed structure may be expressed by the difference between the first stretch rate and the second stretch rate.

The at least one intermediate layer may further include a second intermediate layer having the second elasticity in the weft direction and forming a second embossed structure between the outer skin layer and the inner skin layer.

The second embossed structure is preferably formed symmetrically in the vertical direction with the first embossed structure.

The at least one intermediate layer may have the first stretch ratio in the weft direction and may further include a third intermediate layer provided between the first and second intermediate layers.

A method for manufacturing a flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to an embodiment of the present invention to solve the above technical problem includes the steps of manufacturing a covering yarn using cotton spun yarn as the main yarn and aramid spun yarn as the secondary yarn; And it may include the step of manufacturing a fabric having the covering yarn as a warp yarn and a weft yarn in which cotton spun yarns and aramid spun yarns are alternately arranged.

In the covering yarn, the cotton spun yarn has a twisting direction in a first direction,

The aramid spun yarn may have a twisting direction in the second direction, and the covering yarn may have a twisting direction in the first direction.

A method of manufacturing a flame-retardant fabric for safety protective clothing with excellent elasticity and washing durability according to another embodiment of the present invention to solve the above technical problem includes an outer skin layer, an inner skin layer, and a structure provided between the outer skin layer and the inner skin layer according to a multi-weave manufacturing process. It may include manufacturing a multi-weave including at least one intermediate layer.

The at least one intermediate layer may include a layer having a structure in which cotton spun yarns are used as core yarns and covering yarns with aramid spun yarns as sub-yarns are used as warp yarns, and the weft yarns are arranged alternately with cotton spun yarns and aramid spun yarns.

In the covering yarn, the cotton spun yarn has a twisting direction in a first direction, the aramid spun yarn has a twisting direction in a second direction, and the covering yarn preferably has a twisting direction in the first direction.

The at least one intermediate layer includes a first intermediate layer forming a first embossed structure between the outer skin layer and the inner skin layer, and the outer skin layer and the inner skin layer may have a first stretch ratio in the weft direction. The first intermediate layer preferably has a second stretch rate in the weft direction that is smaller than the first stretch rate. At this time, the embossed structure may be expressed by the difference between the first stretch rate and the second stretch rate.

According to the flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to the present invention and its manufacturing method, a fabric with excellent flame retardancy and strength due to aramid spun yarn, high washing durability, and excellent wearing comfort and comfort due to cotton spun yarn and elasticity is produced. It can be manufactured.

According to the flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to the present invention and its manufacturing method, the fabric can be manufactured in one multi-weave process, providing high fabric productivity and high safety protective clothing manufacturing productivity.

Figure 1 is a flowchart showing an example of a method for manufacturing a flame retardant fabric for safety protective wear with excellent elasticity and washing durability according to the present invention.
Figure 2 is a conceptual diagram showing manufacturing a covering yarn used as a warp yarn for a flame-retardant fabric according to the fabric manufacturing method of Figure 1.
Figure 3 is a conceptual diagram for explaining the combustion continuity blocking function of a flame retardant fabric manufactured according to the fabric manufacturing method of Figure 1.
Figure 4 is a conceptual diagram showing the multi-weave structure of a flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to another example of the present invention.
Figure 5 is a conceptual diagram showing another multi-weave structure of a flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to the present invention.
Figure 6 is a conceptual diagram showing another multi-weave structure of a flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to the present invention.
Figure 7 is a conceptual diagram showing another multi-weave structure of a flame retardant fabric for safety protective clothing with excellent elasticity and washing durability according to the present invention.

In order to fully understand the present invention, its operational or functional advantages, and the objectives achieved by practicing the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals shown in each drawing may indicate the same member.

Figure 1 is a flowchart showing an example of a method for manufacturing a flame retardant fabric for safety protective wear with excellent elasticity and washing durability according to the present invention.

First, a cotton spun yarn twisted in the first direction is manufactured (S100), and an aramid spun yarn twisted in the second direction is manufactured (S110), and then the cotton spun yarn is used as the main yarn, and the aramid spun yarn is used as the secondary yarn. Covering yarn is manufactured by twisting in the direction (S120).

Then, the covering yarn is used as a warp yarn, and a flame retardant fabric having a weft yarn in which cotton spun yarns and aramid yarns are alternately arranged (i.e., cotton spun yarns and aramid spun yarns alternating) is manufactured (S130). The flame retardant fabric manufactured in this way increases flame retardancy by covering the cotton fibers with aramid spun yarn rather than applying flame retardant treatment to the cotton fibers, so it can provide excellent washing durability compared to products containing flame retardant treated cotton fibers. there is.

Figure 2 is a conceptual diagram showing manufacturing a covering yarn used as a warp yarn for a flame-retardant fabric according to the fabric manufacturing method of Figure 1.

According to the present invention, the twisting direction of the core cotton spun yarn is opposite to that of the sub-core aramid spun yarn, but coincides with the twisting direction of the covering yarn. Then, as the covering yarn is twisted, the core penetrates into the inside of the covering yarn as the number of twists in the first direction increases, and the surface coverage area of the covering yarn of the secondary yarn increases.

Then, by complementing the low flame retardancy of the fine-grained aramid spun yarn to the low flame retardancy of the coarse-grained cotton yarn, the covering yarn can have elasticity and high flame retardancy.

On the other hand, as in the comparative example, if the twisting direction of the core yarn and the twisting direction on the covering are opposite, the aramid spun yarn, which is the fine yarn, penetrates into the inside of the covering yarn, and the core yarn, which is the cotton spun yarn, is exposed to the surface of the covering yarn, or the cross yarn and the yarn are exposed to the surface of the covering yarn. As locking occurs, the effectiveness of supplementing the low flame retardancy function of cotton spun yarn due to aramid spun yarn is inevitably lowered.

Meanwhile, in manufacturing the covering yarn, the draft ratio of the fine cotton spun yarn and the non-fine aramid spun yarn is preferably 1:1.5 to 1:1.8. Here, the draft ratio refers to the ratio of the length to which the spun yarns are supplied when twisting the covering yarn.

This is because if the draft ratio is less than 1:1.5, the degree to which the aramid yarn covers the cotton yarn is excessively low, and if the draft ratio exceeds 1:1.8, aramid yarn loops may occur.

And in manufacturing the covering yarn, it is preferable that the equal count ratio of the fine cotton spun yarn and the fine aramid spun yarn is 0.5 to 1. Here, the equal number ratio means the ratio between the number of adverbs and the number of adverbs. This is because if the count ratio exceeds 1, the screening coverage rate of the secondary yarn may be lowered, which may lower the flame retardancy of the covering yarn.

In addition, when manufacturing the covering yarn, it is preferable that the sum of the linkage number of the core cotton spun yarn and the linkage number of the covering yarn is 170 to 220. For example, the linkage number of the cotton spun yarn may be 50, the linkage number of the covering yarn may be 150, and the sum may be 200. And it is desirable that the number of links for each of the judges and adverbs does not exceed at least 150.

Figure 3 is a conceptual diagram for explaining the combustion continuity blocking function of a flame retardant fabric manufactured according to the fabric manufacturing method of Figure 1. For reference, Figure 3 shows the basic repeat structure of the flame retardant wire fabric.

Referring to Figure 3, when combustion due to ignition starts from the cotton yarn weft on the left side of the repeat, the combustion is blocked by the aramid yarn warp, and even when combustion starts from the cotton yarn weft at the bottom of the repeat, the combustion is blocked by the aramid yarn warp. It can be seen that combustion is blocked by the warp of the aramid spun yarn.

That is, the flame-retardant fabric according to the present invention has excellent flame retardancy by preventing the cotton spun yarn contained in the weft from continuing to burn, and can provide excellent comfort because it contains the cotton spun yarn.

Figure 4 is a conceptual diagram showing the multi-weave structure of a flame retardant fabric 100 for safety protective clothing with excellent elasticity and washing durability according to another example of the present invention.

The flame retardant fabric includes an outer skin layer 110 and an inner skin layer 120, which are aramid fabrics, and three middle layers 130 that are a blend of aramid spun yarn and cotton spun yarn provided between the outer skin layer 110 and the inner skin layer 120. . Unlike the example of FIG. 4, this intermediate layer may be implemented with 1 to 4 blended spun yarn layers.

The middle layer 130, as in the examples discussed above, is preferably woven to include a covering yarn with an aramid yarn as a warp yarn, and a weft in which the aramid yarn and the cotton yarn are alternately arranged.

Each layer of the outer skin layer 110, the inner skin layer 120, and the middle layer 130 has a straight axis depending on the diameter of the weft yarn. If the tension problem between the layers is not resolved by making the straight axis of each layer the same, the When the flame retardant fabric 100 is manufactured into safety protective clothing, the wearer's movement is bound to be very uncomfortable.

To this end, by calculating the warp yarn length according to the diameter of the weft for each layer of the outer skin layer 110, the inner skin layer 120, and the middle layer 130, and adjusting the weft density according to the calculated warp yarn length, The direct axis of each floor must be unified. This is also the case in the examples of FIGS. 5 to 7.

According to the present invention, when the outer skin layer 110, the inner skin layer 120, and the middle layer 130 have warp yarns of the same diameter, the first diameter of the cotton spun yarn and the covering yarn included in the weft yarn in the middle layer 130 is It is larger than the second diameter of the weft of the outer skin layer 110 and the inner skin layer 120. This is to maintain the content of cotton fibers in the flame retardant fabric 100 according to the present invention above a certain level. The diameter of each weft can be calculated according to the number of each weft.

Meanwhile, the ratio of the number of weft yarns of the outer skin layer 110, the inner skin layer 120, and the middle layer 130 is set so that the straight axes of each layer are the same, taking into account the ratio of the warp length that occurs due to the difference in the diameter of the weft yarn of each layer. It is desirable to decide.

For example, if the warp length per inch due to the difference in weft diameter of one of the outer skin layer 110 and the middle layer 130 is 5 cm and 10 cm, respectively (i.e., one of the outer skin layer 110 and the middle layer 130 Assume that the ratio of the slope length of the floor is 1:2.

In this case, by setting the weft count of the outer skin layer 110 to 2 and the weft count of one of the middle layers 130 to 1 (i.e., by setting the ratio of the weft count to 2:1), the weft diameter Differences in the direct axis caused by differences in can be canceled out. Of course, the weft yarn of one of the intermediate layers 130 is alternately arranged with cotton spun yarn and covering yarn.

And in the middle layer 130, as in the previous embodiment, the warp yarn is a cotton yarn twisted in the first direction as the core yarn and an aramid yarn twisted in the second direction is used as the secondary yarn, and is made of the same yarn as the core yarn. It is preferable that the covering yarn is manufactured by twisting in one direction. And it is preferable that the sum of the linkage number of the cotton spun yarn and the linkage number of the covering yarn is 170 to 220.

And the middle layer 130 is stitched with a stitching yarn between the outer skin layer 110 and the inner skin layer 120 to have an embossed structure between the outer skin layer 110 and the inner skin layer 120 in the multi-weave manufacturing process. It can be. Then, heat conduction is blocked by the air layer contained in the embossed structure, so the flame retardancy of the flame retardant fabric according to the present invention can be further increased, and excellent wearing comfort can be provided due to elasticity due to the embossed structure. This will be examined in more detail below with reference to FIGS. 5 and 7.

Figure 5 is a conceptual diagram showing another multi-weave structure of the flame retardant fabric 200 for safety protective clothing with excellent elasticity and washing durability according to the present invention.

As shown in (b) of FIG. 5, the flame retardant fabric 200 includes an outer skin layer 210, an inner skin layer 220, and a first intermediate layer 230. The first intermediate layer 230 forms a first embossed structure between the outer skin layer 210 and the inner skin layer 220. For reference, the circles between layers in FIG. 5 indicate positions where the stitching yarn is stitched. This also applies to Figures 6 and 7.

The first embossed structure, as shown in Figure 5 (a), is alternately applied to the outer skin layer 210 and the inner skin layer 220 having a first stretch rate in the weft direction in the multi-weave manufacturing process. It is formed by splicing the first intermediate layer 230 having a second stretching ratio less than 1.

More specifically, the first embossed structure is such that the extent to which the outer skin layer 210 and the inner skin layer 220 are stretched and then reduced in the weft direction during the multi-weave manufacturing process is such that the first intermediate layer 230 is stretched and shortened in the weft direction. Because it is greater than the amount of shrinkage, the first intermediate layer 230 is formed by being folded based on the splicing position.

It is preferable that the outer skin layer 210 and the inner skin layer 220 make up most of the warp and weft yarns of aramid yarn to ensure basic flame retardancy. However, in order to secure elasticity in the weft direction, it is preferable to include some spun yarn, covering yarn, spandex yarn, etc., in which the number of twists and heat treatment have been controlled to ensure elasticity in the weft yarn. This also applies to the third intermediate layer 250 of FIG. 7, which will be examined in the future.

The first intermediate layer 230, as previously discussed with reference to FIGS. 1 to 3, may have a structure that basically provides flame retardancy and contains a large amount of cotton spun yarn to provide excellent comfort when worn. This may also apply to the second intermediate layer 240 of FIGS. 6 and 7 in the future.

The flame retardant fabric 200 provides a space that can block heat conduction between the outer skin layer 210 and the inner skin layer 220 due to the first embossed structure, and thus can provide excellent thermal protection performance.

In addition, when an external force is applied and the outer skin layer 210 and the inner skin layer 220 are stretched, the folded first embossed structure of the first intermediate layer 230 is unfolded, so the flame retardant fabric 200 Due to the first embossed structure, excellent elasticity and excellent wearing comfort can be provided.

Figure 6 is a conceptual diagram showing another multi-weave structure of a flame retardant fabric 200' for safety protective clothing with excellent elasticity and washing durability according to the present invention.

Referring to (b) of FIG. 6, the flame retardant fabric 200' further includes a second intermediate layer 240 in the flame retardant fabric 200 of FIG. 5, and the second intermediate layer 240 has a second embossed structure. forms. The second intermediate layer 240 has a second expansion ratio in the weft direction like the first intermediate layer 230.

The second embossed structure is formed symmetrically in the vertical direction with the first embossed structure. In this vertically symmetrical double emboss structure, the splicing position of the second intermediate layer 240 is symmetrical in the vertical direction at the same interval as the splicing position of the first intermediate layer 230, and the first intermediate layer 230 This occurs because the stretch ratio of the second intermediate layer 240 in the weft direction is smaller than that of the outer skin layer 210 and the inner skin layer 220.

Like the flame retardant fabric 200 of FIG. 5, the flame retardant fabric 200' can also provide excellent thermal protection performance and excellent wearing comfort due to excellent elasticity. Meanwhile, the flame retardant fabric 200' can provide higher thermal protection performance due to the space 245 formed due to the vertically symmetrical double embossed structure. Such a space cannot be formed if the embossed structure is not symmetrical in the vertical direction.

Figure 7 is a conceptual diagram showing another multi-weave structure of a flame retardant fabric (200") for safety protective clothing with excellent elasticity and washing durability according to the present invention.

The flame retardant fabric 200" further includes a third intermediate layer 250 in the flame retardant fabric 200' of Figure 6. The third intermediate layer 250 includes the first intermediate layer 230 and the second intermediate layer 240. The first intermediate layer 230 and the second intermediate layer ( 240) may contribute to forming the first and second embossed structures.

The flame retardant fabric (200") can also provide excellent wearing comfort based on excellent heat protection performance and excellent elasticity. Meanwhile, the flame retardant fabric (200") includes the third intermediate layer 250, so the flame retardancy of FIG. 6 It can provide superior structural stability than fabric (200').

Although the invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and various modifications and variations can be made by those skilled in the art from these descriptions.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the claims and equivalents thereof as well as the claims described later.

100: Flame retardant fabric 110: Outer layer
120: Endothelial layer 130: Middle layer
200, 200', 200": Flame retardant fabric 210: Outer layer
220: Endothelial layer 230, 240, 250: First to third intermediate layers

Claims (14)

delete delete delete It is woven in a multi-weave comprising an outer skin layer, an inner skin layer, and at least one intermediate layer provided between the outer skin layer and the inner skin layer,
The at least one intermediate layer is,
Cotton spun yarn is used as the core yarn and a covering yarn with aramid spun yarn as the secondary yarn is used as the warp yarn.
It includes a layer having a structure in which cotton spun yarn and aramid spun yarn are alternately used as wefts,
In the above covering company,
The cotton spun yarn has a twisting direction in a first direction,
The aramid spun yarn has a twisting direction in a second direction,
The covering yarn has a twisting direction in the first direction,
The outer skin layer and the at least one intermediate layer,
have a slope of the same diameter,
The first diameter of the cotton spun yarn and the covering yarn is,
It is larger than the second diameter of the weft of the outer skin layer,
The number of weft yarns of the skin layer and the one layer is,
A flame retardant fabric for safety protective clothing with excellent elasticity and washing durability, characterized in that each layer is determined to have the same straight axis by considering the ratio of the difference in the straight axis due to the difference in the diameter of the weft.
delete delete delete According to paragraph 4,
The at least one intermediate layer is,
It includes a first intermediate layer forming a first embossed structure between the outer skin layer and the inner skin layer,
The outer skin layer and the inner skin layer are,
It has a first stretching ratio in the weft direction,
The first intermediate layer is,
It has a second stretch rate in the weft direction that is smaller than the first stretch rate,
The emboss structure is,
A flame retardant fabric for safety protective clothing with excellent elasticity and washing durability, characterized in that it is expressed by the difference between the first elasticity rate and the second elasticity rate.
According to clause 8,
The at least one intermediate layer is,
A flame retardant fabric for safety protective clothing with excellent elasticity and washing durability, characterized in that it further comprises a second intermediate layer having the second elasticity in the weft direction and forming a second embossed structure between the outer skin layer and the inner skin layer.
According to clause 9,
The second embossed structure is,
A flame retardant fabric for safety protective clothing with excellent elasticity and washing durability, characterized in that it is formed symmetrically in the vertical direction with the first embossed structure.
According to clause 10,
The at least one intermediate layer is,
A flame retardant fabric for safety protective clothing having excellent elasticity and washing durability, having the first elasticity in the weft direction and further comprising a third intermediate layer provided between the first and second intermediate layers.
delete It includes manufacturing a multi-weave including an outer skin layer, an inner skin layer, and at least one intermediate layer provided between the outer skin layer and the inner skin layer according to a multi-weave manufacturing process,
The at least one intermediate layer is,
It includes a layer with a structure in which cotton spun yarn is used as the core yarn, a covering yarn with aramid spun yarn as the secondary yarn is used as the warp yarn, and cotton spun yarn and aramid spun yarn are alternately used as the weft yarn,
In the above covering company,
The cotton spun yarn has a twisting direction in a first direction,
The aramid spun yarn has a twisting direction in a second direction,
The covering company,
Has a twisting direction in the first direction,
The at least one intermediate layer is,
It includes a first intermediate layer forming a first embossed structure between the outer skin layer and the inner skin layer,
The outer skin layer and the inner skin layer are,
It has a first stretching ratio in the weft direction,
The first intermediate layer is,
It has a second stretch rate in the weft direction that is smaller than the first stretch rate,
The emboss structure is,
A method of manufacturing a flame retardant fabric for safety protective clothing with excellent elasticity and washing durability, characterized in that it is expressed by the difference between the first elasticity rate and the second elasticity rate. delete

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