KR20220153775A - High heat resistance firefighting gloves containing ceramic fiber and manufacturing method thereof - Google Patents

Abstract

The present invention relates to high heat-resistant firefighting gloves, and a method for manufacturing the same, wherein high heat-resistant firefighting gloves include fabric as outer skin, which is woven by supplying at least one type of yarns selected from a group consisting of silk, wool, and polyethylene terephthalate to a warp yarn, and supplying a composite yarn in which ceramic yarn and aramid yarn are plied to a weft yarn. The high heat-resistant firefighting gloves include ceramic yarns to have high heat resistance in addition to excellent physical properties.

Description

High heat resistance firefighting gloves containing ceramic fiber and manufacturing method thereof {High heat resistance firefighting gloves containing ceramic fiber and manufacturing method thereof}

The present invention relates to a highly heat-resistant firefighting glove containing ceramic fibers and a manufacturing method thereof.

Flame retardant protective clothing is worn by firefighters or emergency responders to reduce potential bodily harm when exposed to heat and flame hazards during routine and emergency duties. Currently, typical firefighter protective garments include three layers: a skin layer, a moisture barrier layer, and a thermal barrier layer.

The outer fabric layer resists heat and direct fire and prevents physical damage to the inner layer in the form of, for example, cuts, punctures, tears, slashes, and abrasion. used to Outer fabrics are typically para-aramid fibers (Kevlar® and Twaron®), meta-aramid fibers (Nomex®), polybenzimidazole fibers (PBI), polybenzoxazole fibers (PBO), Basofil® fibers, and Tecgen® fibers.

Usually, two or more different high performance fibers are blended together for applications to achieve optimal thermal and physical performance.

Moisture barrier layers are used to reduce the accumulated thermal stress on the wearer by preventing water and liquids from penetrating into the thermal layer while allowing the transmission of moisture vapor. The most commonly used moisture barrier is Gore-Tex® or Crosstech (manufactured by W.L. Gore & Associates, Inc.) It consists of a thin, compactly woven aramid fabric laminated or bonded with a waterproof breathable membrane, such as, for example, an expandable polytetrafluoroethylene (ePTFE) membrane.

The thermal barrier layer consists of a spun-laced or needle-punched nonwoven substrate that is laminated or quilted with a thin woven aramid face fabric. Non-woven liners are usually para-aramid fibers (Kevlar® and Twaron®), meta-aramid fibers (Nomex®), polybenzimidazole fibers (PBI), and polybenzoxar It is composed of flame and heat resistant fibers such as sol fibers (PBO), and Basofil® fibers or blends thereof.

Preferred thermal barriers have high porosity to allow air in, which in turn will form an effective barrier to heat transfer to the subject's body.

US Patent Application Publication No. 2008 0209611 ('611 publication) discloses a protective garment that includes a shell and liner that can meet a variety of application requirements. More specifically, the present invention is a garment shell and liner comprising a garment shell, a first liner having a first protective characteristic, and a second liner having a second protective characteristic different from the first protective characteristic. Each liner is configured to be mounted on or removed from an outer shell.

BACKGROUND OF THE INVENTION [0002] Protective clothing for firefighting, known in the industry as "fire protection clothing", is usually made of a three-layer structure comprising an outer skin layer, a moisture barrier layer, and a thermal barrier layer. These fire suits are usually heavy, bulky and hot for firefighters or first responders. Further, therefore, there is a continuing need to provide firefighters or emergency medical personnel with protective clothing that provides sufficient protection but is not heavy in weight, is not complex in construction, and is not uncomfortable to wear.

Accordingly, the inventors of the present invention, while conducting research to overcome the problems of the prior art, confirmed that when a glove is manufactured using a fabric woven using a ceramic/aramid composite yarn, it has high heat resistance in addition to excellent physical properties, and the present invention has reached completion.

Accordingly, an object of the present invention is to provide a highly heat-resistant firefighting glove containing ceramic fibers and a manufacturing method thereof.

The present invention provides high heat resistance comprising a fabric woven by supplying at least one type of yarn selected from the group consisting of silk, wool, and polyethylene terephthalate as a warp yarn, and supplying a composite yarn in which ceramic yarns and aramid yarns are plied as weft yarns, and comprising a fabric as an outer shell. Provide firefighting gloves.

As an embodiment of the present invention, the composite yarn is characterized in that it is plied to have a twist number of 200 to 600 T/M.

In another embodiment of the present invention, the firefighting glove includes a fabric woven by supplying at least one type of yarn selected from the group consisting of silk, wool, polyethylene terephthalate, and ceramic yarn to warp and weft yarns as an inner shell. to be characterized

In another embodiment of the present invention, the ceramic yarn is characterized in that at least one selected from basalt fiber and silica fiber.

In addition, the present invention provides a woven outer shell by supplying at least one type of yarn selected from the group consisting of silk, wool, and polyethylene terephthalate as a warp yarn, and supplying a composite yarn in which ceramic yarns and aramid yarns are plied to the weft yarn ( S1);

Preparing a woven endothelial by supplying one or more yarns selected from the group consisting of silk, wool, polyethylene terephthalate, and ceramic yarns to warp and weft yarns (S2); and

It provides a method for manufacturing a highly heat-resistant firefighting glove comprising the step (S3) of laminating the outer skin and the inner skin.

In another embodiment of the present invention, the weaving of the steps S1 and S2 is characterized in that the weaving is performed with a loom having a rapier head including a fixing device for suppressing weft thread loss.

The firefighting gloves manufactured by the manufacturing method of the present invention have excellent physical properties and excellent heat resistance, so they can be usefully used as firefighting gloves.

1 shows an improved rapier head with a weft fall arrester attached.
Figure 2 shows an example of a fabric containing the ceramic fiber yarn of the present invention.
Figure 3 shows an example of a glove prepared according to the method of the present invention.

The present inventors paid attention to ceramic fibers while studying to manufacture firefighting protective gloves having high heat resistance, high strength, and lightweight performance. The present invention was completed by finding that the ceramic fiber can have excellent heat resistance and excellent physical properties by being plied with aramid yarn at the same time.

That is, the present invention supplies one or more types of yarn selected from the group consisting of silk, wool, and polyethylene terephthalate as a warp yarn, and supplies a composite yarn in which ceramic yarns and aramid yarns are plied to the weft yarn to include a woven fabric as an outer shell. Its purpose is to provide highly heat-resistant firefighting gloves.

In addition, the present invention provides a woven outer shell by supplying at least one type of yarn selected from the group consisting of silk, wool, and polyethylene terephthalate as a warp yarn, and supplying a composite yarn in which ceramic yarns and aramid yarns are plied to the weft yarn ( S1);

Preparing a woven endothelial by supplying one or more yarns selected from the group consisting of silk, wool, polyethylene terephthalate, and ceramic yarns to warp and weft yarns (S2); and

It provides a method for manufacturing a highly heat-resistant firefighting glove comprising the step (S3) of laminating the outer skin and the inner skin.

Hereinafter, the present invention will be described in more detail.

The present invention is to manufacture highly heat-resistant firefighting gloves using ceramic yarns. The ceramic yarn may be basalt fiber, silica fiber, or a mixture of the fibers.

The ceramic yarn is used in combination with aramid yarn. The composite yarn was prepared by using a 2for1 type twisting machine, and divided into left and right yarns as needed, giving a twist of 200 to 600, preferably 300 to 400 T / M. . The ceramic yarn may use basalt fiber of 44Tex or silica fiber of 150Tex, but is not limited thereto.

The silk, wool or PET yarn may be supplied with a warp density of 6000 to 15000, the PET yarn having a fineness of 50 to 300 D may be used, silk having a fineness of 21X2, and wool having a fineness of 80/2 may be used. It may, but is not limited thereto.

In the present invention, weaving in steps S1 and S2 is performed with a loom having a rapier head including a fixing device for suppressing weft thread loss. The weft weft head device of a general rapier loom is composed of a part that carries the weft and a part that receives it. When the opening movement of the fabric is performed in the weaving process, the taking head carries the weft thread to the middle point of the loom, the giving head takes the weft thread, and then the weaving movement is performed to complete the cycle of the fabric weaving process.

As these processes are repeated at high speed, the fabric is woven. In the case of generally used yarn, the cross section is round, so it is easily caught in the head locking device, but in the case of ceramic yarn, the cross section of the yarn is flat and smooth, making it difficult to use the loom. If the speed is increased, there is a concern that the yarn slips from the giving head and deteriorates weaving.

Therefore, as shown in FIG. 1, the present invention can solve the thread loss phenomenon by completely pressing and fixing the thread due to a flat device designed to suppress the thread loss phenomenon in the giving head in the weaving process.

Hereinafter, a preferred embodiment is presented to aid understanding of the present invention. However, the following examples are provided to more easily understand the present invention, and the content of the present invention is not limited by the following examples.

[Example]

Example 1. Manufacturing of protective gloves for firefighting

1.1. Weft feeder change and improvement - change of rapier head device

The weft weft head device of a general rapier loom is composed of a part that carries the weft and a part that receives it. When the opening movement of the fabric is performed in the weaving process, the taking head carries the weft thread to the middle point of the loom, the giving head takes the weft thread, and then the weaving movement is performed to complete the cycle of the fabric weaving process.

As these processes are repeated at high speed, the fabric is woven. In the case of generally used yarn, the cross section is round, so it is easily caught in the head locking device, but in the case of ceramic yarn, the cross section of the yarn is flat and smooth, making it difficult to use the loom. If the speed is increased, there is a concern that the yarn slips from the giving head and deteriorates weaving.

Therefore, as shown in FIG. 1, the present invention was able to solve the thread loss phenomenon by completely pressing and fixing the thread due to a flat device designed to suppress the thread loss phenomenon in the giving head in the weaving process.

1.2. Selection of yarn and appropriate fineness for fabric weaving

Table 1 shows the selection of yarns for weaving fire protection glove fabric.

[Table 1]

A ceramic aramid composite yarn was manufactured using a 2for1 twisting machine, and, if necessary, divided into left and right yarns, and 350T/M of twist was applied to the ply-twisted yarn.

1.3. Perform fabric weaving process

Conditions for fabric weaving are shown in Table 2 below.

[Table 2]

Various weaving specimens prepared by the above conditions are shown in Figure 2 (for fire protective gloves applicability test (KFS 0005-2019-01)).

By constructing various design concepts of protective gloves for firefighting to be manufactured, a prototype of the actually manufactured protective gloves is shown in FIG. 3 .

Example 2. Evaluation of physical properties

Test evaluation for fire protection gloves (0005-2019-01) specified in the fire protection equipment standard specification for the manufactured protective gloves was performed according to the following conditions.

(1) Evaluation of flame spread rate

Assemblies of fire protection gloves were tested using Procedure A-Surface Ignition Method of KS K ISO 15025:2008 (Protective clothing - Test method for limiting flame spread rate of protective clothing against heat and flame).

(2) Passage of radiant heat

The amount of radiant heat passing is tested in accordance with Test A (heat flux density of 40kW/m ² ) of KS K ISO 6942:2011 (Protective clothing-Protection against heat and fire-Test method: Evaluation of materials and material components when exposed to radiant heat sources) However, when the size of the sample was small, the same assembly with the same structure was tested.

(3) Passage of flame heat

The fire protection glove fabric was tested according to KS K ISO 9151:2012 (protective clothing against heat and flame-heat transfer measurement when exposed to flame). However, when the size of the sample is small, an assembly with the same structure was tested.

(4) Heat and flame barrier properties

The fabric of fire protection gloves is tested according to KS K ISO 17942:2012 (heat and flame blocking protective clothing - measurement of heat permeability when simultaneously exposed to flame and radiant heat). However, when the size of the sample is small, the same assembly with the same structure was tested.

(5) Passage of contact heat

260 ~ in accordance with KS K ISO 12127-1:2007 (protective clothing against heat and flame-Method for measuring contact heat transfer of protective clothing-Part 1: Test method using contact heat by heat cylinder) for fire protection glove fabric It was tested by contacting heat at 265°C.

<Test of mechanical properties as textile clothing>

The mechanical properties test of textile clothing is heat resistance (KS K ISO 5085-1), tensile strength (KS K 0520), tear strength (KS K ISO 13937-1), burst strength (KS K ISO 13938-1), abrasion resistance (KS K ISO 12947) and fabric weight (KS K 0514).

The evaluation results confirmed by the above method are shown in Tables 3 to 7 below.

One) Flame spread rate evaluation

[Table 3]

2) radiant heat passage

[Table 4]

※ 1. Pretreatment: tested in the presented condition2. Heat flux density: 40 kW/m ²

3. t12: Time taken for the temperature of the back side of the test piece to rise by (12±0.1)℃

4. t24: Time taken for the temperature of the back side of the test piece to rise by (24±0.2)℃

3) Passage of flame heat

[Table 5]

※ 1. Pretreatment: tested in the presented condition2. Heat flux density: 80 kW/m ²

3. t12: Time taken for the temperature of the back side of the test piece to rise by (12±0.1)℃

4. t24: Time taken for the temperature of the back side of the test piece to rise by (24±0.2)℃

4) Heat and flame barrier properties: Thermal transmittance test when exposed to flame and radiant heat

[Table 6]

※ 1. TTI, kWs/m ² = Heat flux density(kWs/m ² ) × Time to burn (s)

- F : Heat flux (80±2)kWs/m ²

- T : burn time (seconds), time from the start of heat exposure to the intersection of heat transfer burns

2. Heat flux density: 80kW/㎡

3. t12: Time taken for the temperature of the back side of the test piece to rise by (12±0.1)℃

4. t24: Time taken for the temperature of the back side of the test piece to rise by (24±0.2)℃

5) Passage of contact heat

[Table 7]

※ 1. Tt: The time from the start of the test to when the temperature of the calorimeter rises 10℃ above the starting temperature

2. Contact temperature: (260±1)℃

6) Test of mechanical properties as textile clothing

① heat resistance

[Table 8]

② Tensile strength

[Table 9]

③ Tear strength

[Table 10]

④ Burst strength

[Table 11]

⑤ Wear resistance

[Table 12]

⑥ Fabric weight

[Table 13]

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

Claims (7)

A highly heat-resistant firefighting glove comprising a fabric woven as an outer shell by supplying at least one type of yarn selected from the group consisting of silk, wool, and polyethylene terephthalate as a warp yarn, and supplying a composite yarn in which ceramic yarns and aramid yarns are plied as weft yarns. According to claim 1,
The composite yarn is plied to have a twist number of 200 to 600 T / M, high heat resistance fire gloves. According to claim 1,
The firefighting glove comprises, as an inner skin, a fabric woven by supplying at least one type of yarn selected from the group consisting of silk, wool, polyethylene terephthalate, and ceramic yarn as warp and weft yarns. According to claim 1,
The ceramic yarn is one or more selected from basalt fibers and silica fibers, high heat resistance fire gloves. Preparing a woven outer shell by supplying at least one type of yarn selected from the group consisting of silk, wool, and polyethylene terephthalate to a warp yarn, and supplying a composite yarn in which ceramic yarns and aramid yarns are plied to the weft yarn (S1);
preparing a woven endothelial by supplying one or more yarns selected from the group consisting of silk, wool, polyethylene terephthalate, and ceramic yarns to warp and weft yarns (S2); and
A method of manufacturing a highly heat-resistant firefighting glove comprising the step (S3) of laminating the outer skin and the inner skin. According to claim 5,
The ceramic yarn is at least one selected from basalt fibers and silica fibers, a method for producing highly heat-resistant firefighting gloves.
According to claim 5,
The weaving of the steps S1 and S2 is performed with a loom having a rapier head including a fixing device for suppressing weft loss, a method for manufacturing highly heat-resistant fire fighting gloves.

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