KR20200136611A - Manufacturing method of marine workwear using non-sewing - Google Patents

Abstract

The present invention relates to a manufacturing method of a marine work-wear using non-sewing to meet environmental compatibility, work performance, and protective function by using polyester yarn and polypropylene yarn. In particular, the manufacturing method includes: a knitting fabric manufacturing step of manufacturing a knitting fabric by using polyester yarn as warp and polypropylene yarn as weft; a coating step of coating the kitting fabric with a functional coating agent and then drying the coating; a bonding step of cutting the knitting fabric after the coating step to have a predetermined shape, and bonding the cut knitting fabric using ultrasonic welding to form a predetermined shape; and a finishing step of seam-sealing a joint area formed on the knitting fabric after the bonding step.

Description

Manufacturing method of marine workwear using non-sewing}

The present invention relates to a method of manufacturing a seamless sea work garment for manufacturing a sea work garment capable of satisfying environmental suitability, work performance, and protective functionality by using polyester yarn and polypropylene yarn.

Work clothes should be equipped with a sense of belonging, comfort, etc. for improvement of work efficiency and safety, and should be designed to satisfy a variety of complex factors such as environmental suitability, work performance, protective function, and comfort at the same time.

Functionality, aesthetics, and symbolism are required for the purpose of wearing work clothes, and functional elements for comfortable wearing of work clothes include work clothes characteristics, work operation characteristics, worker characteristics, and environmental conditions. Among them, the characteristics of work clothes are of the utmost importance in order to maintain a comfortable fit efficiently while improving work efficiency, safety, and not causing health problems, and it is the work clothes material that has an absolute effect on selecting a fabric suitable for marine work clothes. In order to do this, research is needed to select the optimal fabric by analyzing the properties according to various tissue patterns.

In addition, in the case of marine work clothes, there is a problem in that the existing seam is not waterproof, so a solution is needed.

The method of manufacturing clothes for a seamless sea work according to the present invention has an effect of providing an optimal teaching fabric with maximized mechanical strength and water resistance to suit the marine environment.

In addition, there is an effect of securing water resistance by supplementing the disadvantage of not being waterproof in the existing seam.

The present invention is a teaching fabric manufacturing step of manufacturing a teaching fabric using a polyester yarn as a warp and a polypropylene yarn as a weft, a coating step of drying after applying a functional coating agent to the teaching fabric, and a teaching fabric subjected to the coating step And a joining step of cutting the cut into a predetermined shape, joining using ultrasonic fusion so that the cut teaching fabric forms a predetermined shape, and a finishing step of performing a ventricular sealing treatment of a joint portion formed on the teaching fabric through the joining step. To do.

In addition, preferably, the teaching fabric, the polyester yarn and the polypropylene yarn is used as a draw textured yarn (DTY), the warp density of the polyester yarn is 130 to 140 yarns / inch, the poly It is characterized in that the propylene yarn has a weft density of 80 to 90 per inch.

In addition, preferably, in the bonding step, the frequency range of ultrasonic waves used during ultrasonic welding is characterized in that 0.47 to 0.53 kHz.

The method of manufacturing a garment for a seamless marine work according to the present invention uses a polyester yarn and a polypropylene yarn as a draw textured yarn (DTY), and the warp density of the polyester yarn is 130 to 140 yarns/inch, and the As the weaving fabric is woven so that the polypropylene yarn has a weft density of 80 to 90 per inch, there is an effect of providing an optimal teaching fabric maximizing mechanical strength and water resistance to suit the marine environment.

In addition, during the bonding step, the seam-use clothing is not sewn, but the seam is bonded through ultrasonic welding, and at the same time, through the finishing step, the seam sealing process is performed to form a more robust sealing structure. There is an effect of securing domestic water supply by supplementing the shortcomings.

1 is a flow chart of a method for manufacturing clothes for seamless sea work according to the present invention.
Figure 2 is a photograph showing the organizational structure of the teaching fabric manufactured according to the present invention.
3 is a test report measuring the tensile strength and tensile elongation of the teaching fabric manufactured according to the present invention.
4 is a test report measuring the tear strength of a teaching fabric manufactured according to the present invention.
5A is a graph measuring the peel strength of the teaching fabric according to Example 1.
5B is a graph measuring the peel strength of the teaching fabric according to Example 2.
5C is a graph measuring the peel strength of the teaching fabric according to Example 3.
6 is a test report measuring the abrasion strength of the teaching fabric manufactured according to the present invention.
7 is a test report measuring the water resistance of the teaching fabric manufactured according to the present invention.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings.

The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

1 is a flow chart of a method for manufacturing clothes for seamless sea work according to the present invention. As shown in Figure 1, the method of manufacturing a garment for a seamless sea work according to the present invention includes a teaching fabric manufacturing step (S100), a coating step (S200), a bonding step (S300) and a finishing step (S400).

First, the teaching fabric manufacturing step (S100) is a step of manufacturing a teaching fabric using a polyester yarn as a warp and a polypropylene yarn as a weft.

It is preferable to use the polyester yarn and polypropylene yarn as the teaching fabric as a draw textured yarn (DTY).

In the case of stretching work, it is combustible again after stretching, and it is set in the process of twisting and unscrewing the thread, and it swells up and maintains its shape even under conditions such as heat or cooling, maintaining warmth while maintaining excellent elasticity. .,

Accordingly, the present invention can secure a tensile strength and tensile elongation suitable for use as a fabric of a marine workwear garment by using an elongation working construction, and details thereof will be described later.

In addition, the teaching fabric is preferably woven in the form of a rip stop (Rip Stop) structure. The fabric of the ripstop structure is a checkerboard shape that is resistant to rupture and tear, and even if it is torn, the tear does not expand and there is no damage to the surroundings.It is possible to secure the tear strength suitable for use in the fabric of marine work clothes. It is a type of weaving.

And, when weaving the teaching fabric, the polyester yarn has a warp density of 130 to 140 yarns/inch, and the polypropylene yarn has a weft density of 80 to 90 yarns/inch, and the weight of the woven teaching fabric is 80 It is preferably from 90 g/m 2.

Specifically, when the warp density of the polyester yarn is less than 130 yarns/inch and the weft density of the polypropylene yarn is less than 80 yarns/inch, the voids of the teaching fabric become large, making it difficult to secure the water repellency of the teaching fabric, and the polyester If the warp density of the yarn is more than 140 yarns/inch, and the weft density of the polypropylene yarn is more than 90 yarns/inch, the weaving density is high and the weight of the teaching fabric increases, resulting in a problem that the garment for offshore work becomes heavy.

In addition, if the weight of the teaching fabric is less than 80g/㎡, there is a concern that the mechanical properties may be slightly lowered due to the thin thickness. If the weight of the teaching fabric exceeds 90g/m2, the weight of the teaching fabric increases, resulting in a problem that the clothing for marine work becomes heavy. Occurs.

The warp density and weft density of the teaching fabric as described above, and the weight of the teaching fabric can have sufficient tensile strength, tear strength, and tensile elongation at the same time as the applicant has the minimum weight to be suitable for the fabric of marine work clothes after several manufactures. The density and weight were derived, and the related content will be described in detail in Experimental Example 1 below.

Figure 2 is a photograph showing the organizational structure of the teaching fabric manufactured according to the present invention. That is, it is a photograph showing the organizational structure of the teaching fabric manufactured under the conditions presented above, and it is preferable that the polyester yarn and the polypropylene yarn are woven as shown in FIG. 2.

Thus, the weight of the fabricated fabric is 85g/㎡, the tensile strength is 18.9 MPa in the vertical direction and 17.8 MPa in the horizontal direction, and the tensile elongation is 802.2% in the vertical direction and 881.2% in the horizontal direction, and the tear strength is vertical. The direction was measured as 20.2N and the horizontal direction was 8.4N, which is referred to FIGS. 3 and 4.

3 is a test report measuring the tensile strength and tensile elongation of a teaching fabric manufactured according to the present invention, and FIG. 4 is a test report measuring the tear strength of a teaching fabric manufactured according to the present invention.

In other words, in the case of clothing fabrics for offshore work, weight reduction is an important factor in order to minimize air resistance, and it is important to minimize weight, but maximize tensile strength, tensile elongation and tear strength according to environmental suitability, protective function, and work performance. It can be seen that the present invention can minimize the weight of the fabric and at the same time satisfy the requirements of the tensile strength, tensile elongation, and tear strength of the fabric of industrial clothing, so that it is suitable for use in marine work clothes.

Next, the coating step (S200) is performed. The coating step (S200) is a step of drying after applying a functional coating agent to the upper surface of the teaching fabric manufactured in the teaching fabric manufacturing step (S100).

At this time, the functional coating agent is applied to impart various functions to the teaching fabric, and it is preferable to apply a coating agent such as polyurethane, acrylic, silicone, etc. according to the type and purpose of use of the teaching fabric and then dry it through a dryer.

In the present invention, it is most preferable to apply a polyurethane coating to maximize the mechanical properties of the teaching fabric, especially tensile strength.

In addition, it is possible to secure water repellency and moisture permeability by forming a submerged film on the upper surface of the teaching fabric when the polyurethane coating agent is coated.

When applying the polyurethane coating agent, it is preferable to dry for 1 minute at a temperature of 70 to 90°C after application in order to fix the polyurethane coating agent on the upper surface of the teaching fabric.

This is because when drying at a temperature of less than 70° C. for less than 1 minute, the polyurethane coating agent is difficult to adhere to the teaching fabric, and when drying at a temperature exceeding 90° C. for more than 1 minute, the teaching fabric may be damaged.

Next, a bonding step (S300) is performed, and in the bonding step (S300), the teaching fabric that has been subjected to the coating step (S200) is cut into a predetermined shape, and ultrasonic fusion is used so that the cut teaching fabric forms a predetermined shape. This is the step of joining.

Ultrasonic fusion is a method of fusion bonding with pressure and ultrasonic energy without applying heat. It can solve the problem that the bonding surface becomes hard due to fusion by heat, and the peel strength of the fusion surface is excellent and productivity is high.

In addition, the ultrasonic welding method can secure water resistance by compensating for the disadvantage of not being waterproof in the existing seam, and also has the advantage of less change in physical properties after washing of the moisture-permeable waterproof fabric.

In the case of ultrasonic welding, it is preferable that the frequency range of the ultrasonic wave used (ie, welding strength) is 0.47 to 0.53 kHz.

Specifically, when the frequency of the ultrasonic wave is less than 0.47 kHz, sufficient bonding between the teaching fabrics is not made, and thus peeling strength and water resistance suitable for use as a marine work clothing cannot be secured, and the frequency of the ultrasonic wave is greater than 0.53 kHz. In this case, there is a concern that the peeling strength and water resistance may be lowered due to damage to the teaching fabric, and this will be described in more detail in Experimental Example 2 below.

Next, a finishing step (S400) is performed, and the finishing step (S400) is a step of performing a ventricular sealing treatment on a joint portion formed on the teaching fabric that has undergone the joining step (S300).

That is, after bonding the cut interwoven fabric by ultrasonic welding, reinforcing the seam sealing tape at the bonding site so as to maintain the peel strength and water resistance of the bonding site (ie, the bonding surface).

That is, the present invention performs bonding through ultrasonic fusion without sewing the edges of the clothing for offshore work, and at the same time, seam sealing is performed to form a more robust sealing structure to secure excellent abrasion strength, and at the same time, peel strength and water resistance are improved. Can be improved.

The peeling strength of the teaching fabric manufactured according to the above was measured at a maximum of 1.478kgf/cm, which is proved to have excellent peeling strength as it satisfies the peeling strength of 1.0kgf/cm among the fabric requirements of the clothing industry. See to 5c.

5A is a graph measuring the peel strength of the teaching fabric according to Example 1, FIG. 5B is a graph measuring the peel strength of the teaching fabric according to Example 2, and FIG. 5C is a graph measuring the peel strength of the teaching fabric according to Example 3. It is a graph, and details thereof will be described in detail in Experimental Example 2 below.

In the case of the peel strength, KS K 0531:2006 was measured, and the peel rate was fixed at 300 mm/min and measured by peeling in the fused longitudinal direction using a constant speed tensioning device.

In addition, the abrasion strength of the teaching fabric was measured by the KS K 0604:2006 Martindale method, and after 15,000 abrasions with a load of 595 g, the abnormality was determined based on the singularity or external deformation of the bonding site, see FIG. .

6 is a test report measuring the abrasion strength of the teaching fabric manufactured according to the present invention.

As shown in Figure 6, it was confirmed that there is no abnormality in the abrasion strength measurement result, through which it was proved that the teaching fabric manufactured according to the present invention secured excellent abrasion strength so as to be suitable for use as clothing for offshore work.

In addition, the water resistance of the teaching fabric was carried out by the KS K ISO 811:2009 water pressure method, and the water pressure increase rate was 60cmH ₂ O/min, and distilled water with a water temperature of 20±2℃ was used so that the ultrasonic fusion site was placed in the center of the measuring device and fused. It was determined that the water droplets according to the hydraulic pressure method were observed at the site, which is referred to FIG. 7.

7 is a test report measuring the water resistance of the teaching fabric manufactured according to the present invention.

As described in Figure 7, also in the measurement results was measured in 812cmH ₂ O, which the National Standards KS K 1452 synthetic properties quality standard of domestic also more 800cmH ₂ O of the fabric (4 types) having the moisture permeable function from canvas standard When satisfied, it has been proven to have a water resistance suitable for use as a marine work garment.

<Experimental Example 1>

In this Experimental Example 1, an experiment was conducted to measure the weight of the fabric by varying the types of warp and weft yarns, warp density and weft density.

Table 1 below shows examples of the present invention and various comparative examples, and Examples and Comparative Examples 1 to 5 were woven in the same ripstop structure.

division Yarn type Gradient density
(Bon/inch) Weft density
(Bon/inch) weight
(g/㎡) slope Weft Comparative Example 1 Polyester DTY company
(POLY FD 75/72 DTY) Polyester
DTY company
(POLY FD 75/72 DTY) 160 92 104.84 Comparative Example 2 nylon
Filament yarn
(NF 70/24 SD) nylon
Filament yarn
(NF 70/24 SD) 115 90 66 Comparative Example 3 nylon
Filament yarn
(NF 50/48 FD) nylon
Filament yarn
(NF 50/48 FD) 188 120 70 Comparative Example 4 Nylon DTY company
(ND 40 FD) Nylon DTY company
(ND 40 FD) 162 128 65.25 Comparative Example 5 Nylon DTY company
(ND 30/34 FD) Nylon ATY company
(NA 35/34 FD) 186 148 53 Example Polyester
DTY company
(POLY FD 75/72 DTY) Polypropylene
DTY company
(POLYPROPYLENE FD 150 DTY) 136 85 85

Specifically, it is preferable that the weight is 80 to 90 g/m 2 in the case of a teaching fabric used as a fabric for marine work clothes. Specifically, if the weight of the teaching fabric is less than 80g/㎡, there is a possibility that the mechanical properties may be slightly lowered due to the thin thickness. If the weight of the teaching fabric exceeds 90g/m2, the weight of the teaching fabric increases, resulting in a problem that the clothing for marine work becomes heavy. Occurs.

As a result of measuring the weight of the teaching fabric, as shown in Table 1 above, the weight of the teaching fabric according to the embodiment was measured to be 85g/m2, which is a weight range of 80 to 90g/ which can secure physical properties suitable for use as clothes for marine work. It can be confirmed that it belongs to ㎡.

That is, as described above, the teaching fabric according to the embodiment can secure excellent tensile strength, tear strength, and tensile elongation at the same time as having a minimum weight to be suitable for the fabric of clothing for offshore work, which is in FIGS. 3 and 4 See.

First, as shown in FIG. 3, the tensile strength of the teaching fabric according to the embodiment is 18.9 MPa in the vertical direction and 17.8 MPa in the horizontal direction, and this example satisfies the tensile strength of 15 MPa among the fabric requirements of industrial clothing. It has been proven to have sufficient tensile strength for use in marine work clothing.

In addition, the tensile elongation is 802.2% in the vertical direction and 881.2% in the horizontal direction, which satisfies the tensile elongation of 800% among the fabric requirements of industrial clothing, so the above embodiment has sufficient tensile elongation to be used as a marine work clothing. Has been proven.

And, as shown in Fig. 4, the tear strength of the teaching fabric according to the embodiment is 20.2 N in the vertical direction and 8.4 N in the horizontal direction, which is the tear strength of 20 N in the vertical direction and 8 N in the horizontal direction among fabric requirements for industrial clothing. According to the satisfaction of the embodiment, it was proved to have sufficient tear strength to be used as clothing for marine work.

In conclusion, as the teaching fabric according to the embodiment can minimize the weight of the fabric and at the same time satisfy the requirements of the tensile strength, tensile elongation and tear strength of the fabric of industrial clothing, it is sufficiently suitable for use in marine work clothing. Able to know.

<Experimental Example 2>

In this Experimental Example 2, an experiment was conducted to measure the peel strength of the interwoven fabric according to the frequency domain (ie, fusion strength) by varying the frequency domain of ultrasonic waves used during ultrasonic welding in the bonding step (S300).

Table 2 below shows various examples of the present invention, and in Examples 1 to 3, the warp density of the polyester DTY yarn was 136 yarns/inch, and the weft density of the polypropylene DTY yarn was 85 yarns/inch to prepare a teaching fabric. , The bonding step (S300) was carried out under the same fusion speed and fusion pressure.

division Ultrasonic frequency
(That is, fusion strength) Example 1 0.47kHz Example 2 0.50kHz Example 3 0.53kHz

The results of measuring the peel strength of the teaching fabrics according to Examples 1 to 3 are shown in Table 3 below, and during the measurement, the peel strength was repeatedly measured over three times, and the average peel strength was taken as the average of the three measurement results, This is referred to Figures 5a-5c.

division Peel strength
(Max) Minimum peel strength
(Min) Average peel strength
(Mean) Example 1 1.525 1.439 1.478 Example 2 1.438 1.409 1.330 Example 3 1.511 1.405 1.455

5A is a graph measuring the peel strength of the teaching fabric according to Example 1, FIG. 5B is a graph measuring the peel strength of the teaching fabric according to Example 2, and FIG. 5C is a graph measuring the peel strength of the teaching fabric according to Example 3. It is a graph.

First, as disclosed in FIG. 5A, as a result of measuring the peel strength of the teaching fabric according to Example 1, the maximum peel strength was 1.525kgf/cm, the minimum peel strength was 1.439kgf/cmm, and the average peel strength was 1.478kgf/cm. , As this satisfies the peel strength of 1.0kgf/cm among the fabric requirements of industrial clothing, it was proved that Example 1 has a peeling strength sufficient to be used as a marine working clothing.

In addition, as disclosed in FIG. 5B, as a result of measuring the peel strength of the teaching fabric according to Example 2, the maximum peel strength was 1.438kgf/cm, the minimum peel strength was 1.409kgf/cmm, and the average peel strength was 1.330kgf/cm. , As this satisfies the peel strength of 1.0kgf/cm among the fabric requirements of industrial clothing, it was proved that Example 2 had a peeling strength sufficient to be used as a garment for marine work.

In addition, as disclosed in FIG. 5C, as a result of measuring the peel strength of the teaching fabric according to Example 3, the maximum peel strength was 1.511kgf/cm, the minimum peel strength was 1.405kgf/cmm, and the average peel strength was 1.455kgf/cm. , As this satisfies the peel strength of 1.0kgf/cm among the fabric requirements of industrial clothing, it was proved that Example 3 had a peeling strength sufficient to be used as a marine working clothing.

That is, as in Examples 1 to 3, when the frequency range of the ultrasonic wave used for ultrasonic welding is 0.47 to 0.53 kHz, the peel strength of 1.0 kgf/cm among the fabric requirements of industrial clothing is satisfied, so that it is used as a clothing for marine work. Not only was it proven to have sufficient peel strength for use, but no damage to the teaching fabric occurred.

Accordingly, the method of manufacturing clothes for seamless marine work according to the present invention is advantageous in that the weight can be minimized to be suitable for the marine environment and at the same time, excellent mechanical properties can be secured to satisfy environmental suitability, work performance, and protective function. There is this.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

S100: manufacturing step of teaching fabric
S200: Coating step
S300: bonding step
S400: closing stage

Claims (3)

A teaching fabric manufacturing step of using a polyester yarn as a ramp and using a polypropylene yarn as a weft to prepare a teaching fabric;
A coating step of drying after applying a functional coating agent to the teaching fabric;
A joining step of cutting the teaching fabric through the coating step into a predetermined shape, and joining the cut teaching fabric to form a predetermined shape using ultrasonic welding; And
A method for producing a garment for seamless sea work, comprising: a finishing step of performing a seam-sealing treatment on the bonded portion formed on the teaching fabric that has undergone the bonding step.
The method of claim 1,
The teaching fabric,
The polyester yarn and polypropylene yarn are used as draw textured yarn (DTY), and the warp density of the polyester yarn is 130 to 140 yarns/inch, and the polypropylene yarn has a weft density of 80 to 90 yarns / Inches, characterized in that the sewing method for manufacturing clothes for sea work.
The method of claim 1,
In the bonding step,
A method of manufacturing a garment for seamless sea work, characterized in that the frequency range of ultrasonic waves used during ultrasonic welding is 0.47 to 0.53 kHz.

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