TWI748669B - Method of seaming clothes of protective clothing - Google Patents

Abstract

A method of seaming clothes of protective clothing is disclosed in the present invention. In the method, a plurality of clothes of a waterproof protective clothing are prepared; two connecting area of the clothes are utilized to form a joint tape; a water-resistant clothes is utilized to form two bended areas; and finally a water-repellent thread is utilized to seam the two bended areas and the joint tape along a sewing path, so that the water-resistant clothes is fixed to the joint tape.

Description

Sewing method of tailoring fabric for waterproof protective clothing

The present invention relates to a method, in particular to a sewing method of tailoring cloth for waterproof protective clothing.

The manufacturing standards for medical gowns (Gown) and coveralls (Coverall) belong to the category of "Personal Protective Equipment". ANSI/AAMI PB70 is the standard for standardizing this equipment, divided into four levels Among them, each level of isolation clothing has restrictions on use occasions, and the higher the level, the better the protection of the clothing, which allows users to have higher protection to avoid blood and virus infection. Among them, in the test standard of Level 2, the hydrostatic pressure test result value obtained by the AATCC 127 test must be greater than or equal to 20cmH ₂ O, and the penetration resistance test result value obtained by the AATCC 42 test must be less than or equal to 1 gram.

However, in the prior art, if the seams of the waterproof protective clothing such as isolation gowns and jumpsuits are poorly treated with water and splashing water, it will easily make users wearing waterproof protective clothing unpredictable. Under circumstances, contact with liquids, such as blood, saliva, sewage, etc., increases the possibility of viruses and bacteria passing through waterproof protective clothing, and increases the risk of infection for users.

In addition, DuPont (DuPont) public information shows that one of the stitched (Stitched seam) method of hydrostatic pressure test results is only 6cmH ₂ O, and the other (Bound seam) method of hydrostatic pressure test results The result value only reaches 20cmH ₂ O, and the above test results are all test results before washing. Among them, the information disclosed by DuPont is summarized into the following table 1. If the value exceeds 20cmH ₂ O, it is necessary to use an additional waterproof tape, but it will inevitably increase the manufacturing cost (the manufacturing cost of the waterproof protective clothing itself is not cheap) and the difficulty of the manufacturing process. Generally speaking, after washing with water, the waterproof quality tends to decrease, and the value of the hydrostatic pressure test will theoretically be lower than the value before washing. Therefore, based on the information disclosed by DuPont, it can be reasonably inferred that unless additional waterproof tape is used, waterproof protective clothing that uses general sewing methods to meet the Level 2 test standard is risky. Table I AATCC 127 Stitched seam Bound seam Use waterproof tape Before washing 6cmH ₂ O 20cmH ₂ O ＞20cmH ₂ O

In view of the prior art, the seams of waterproof protective clothing may have poor waterproof and water repellent treatment and various problems derived therefrom. One of the main objectives of the present invention is to provide a sewing method of tailoring cloth for waterproof protective clothing to solve at least one of the problems in the prior art.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention are to provide a sewing method of tailored fabrics for waterproof protective clothing, which includes the following steps: preparing a plurality of tailored fabrics for stitching to form a waterproof protective clothing; cutting the fabrics One or two adjacent ones form two joint areas, and the joint areas are bonded together to form a joint belt; a bending auxiliary jig is used to bend the two edges of a waterproof cloth toward each other to form two bending areas, The bending area is attached to the joint belt respectively, so that the waterproof fabric is covered on the joint belt; a sewing needle is used to repeatedly pass a water-blocking wire through the bending area and the joint belt along a sewing path, so as to prevent the waterproof The fabric is sewn and fixed to the joint belt.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is a method for stitching the tailored fabric of the waterproof protective clothing, which further includes: using an opening of the bending auxiliary jig to form the waterproof fabric into two adjacent ones. Temporary bending area: After the waterproof fabric is separated from the opening by using the bending auxiliary jig, the temporary bending area is reflexed to form the bending area.

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is the tailored fabric in the sewing method of the tailored fabric of the waterproof protective clothing, including a front side tailored fabric, two sleeves tailored fabric, and two rear sides. At least one of the tailored fabrics.

On the basis of the above-mentioned necessary technical means, a subsidiary technical means derived from the present invention is to make a hydrostatic pressure test result value of the tailored fabric in the sewing method of the tailored fabric of the waterproof protective clothing is greater than or equal to 20cmH ₂ O.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the hydrostatic pressure test result value of the tailored fabric in the sewing method of the tailored fabric of the waterproof protective clothing be greater than or equal to 60cmH ₂ O.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make one of the hydrostatic pressure test results of the waterproof fabric in the sewing method of the tailored fabric of the waterproof protective clothing be greater than or equal to 20 cmH ₂ O.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the hydrostatic pressure test result value of the waterproof fabric in the sewing method of the tailored fabric of the waterproof protective clothing is greater than or equal to 60cmH ₂ O.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is to make the penetration test result value of each of the tailored fabrics in the sewing method of the tailored fabric of the waterproof protective clothing is less than or equal to 1 gram .

On the basis of the above-mentioned necessary technical means, one of the subsidiary technical means derived from the present invention is to make one of the water-proof fabrics in the sewing method of the waterproof-type protective clothing cut fabric penetration test result value is less than or equal to 1 gram.

Based on the above, the sewing method for cutting cloth of waterproof protective clothing provided by the present invention is to bend auxiliary jigs, sewing needles and water-blocking wires to form the cut cloth into a joint belt, and form the waterproof cloth into a bending area and wrap it. Compared with the prior art, the manufacturing process of the present invention is simpler than that of the prior art. It only needs to use the sewing method (without using additional waterproof tape) to make the waterproof quality meet the regulations of the law. In addition, the waterproof quality of waterproof protective clothing after multiple washings, especially the waterproof quality of the shoulder stitches, sleeve stitches, and side stitches, can still meet the regulations of the law to reduce water or liquid ingress. The possibility of waterproof protective clothing, thereby reducing the user's risk of infection.

The specific embodiments of the present invention will be described in more detail below in conjunction with the schematic diagrams. According to the following description and the scope of patent application, the advantages and features of the present invention will be more clear. It should be noted that the drawings all adopt very simplified forms and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

Please refer to the first to eighth figures, in which, the first figure is a flow chart showing the method for sewing the waterproof protective clothing provided by the preferred embodiment of the present invention; the second figure is the preferred embodiment of the present invention The provided schematic diagram of the waterproof fabric entering the bending auxiliary jig and cutting fabric; the third figure is a schematic cross-sectional diagram showing the waterproof fabric of the second figure; the fourth figure is a schematic diagram showing the waterproof fabric leaving the bending auxiliary jig; Figure is a schematic cross-sectional view showing the waterproof fabric of Figure 4; Figure 6 is a schematic diagram showing the waterproof fabric provided by a preferred embodiment of the present invention covering the tailored fabric; Figure 7 shows the waterproof fabric covering of Figure 6 The cross-sectional schematic diagram of the cut fabric; and, the eighth figure is a schematic diagram showing the waterproof protective clothing.

As shown in the figure, a method for sewing a cut cloth of a waterproof protective clothing provided by a preferred embodiment of the present invention includes the following steps S101 to S105.

Step S101: preparing a plurality of tailored fabrics to be stitched together to form a waterproof protective clothing.

Step S102: Cut one of the fabrics or two adjacent ones to form two joining areas, and lamination of the two joining areas to form a joining belt.

Step S103: Utilize an opening of the bending auxiliary jig to form two adjacent temporary bending areas of the waterproof fabric.

Step S104: After the waterproof fabric is separated from the opening by using the bending auxiliary jig, the two temporary bending areas are folded toward each other to form two bending areas.

Step S105: Use a sewing needle to repeatedly pass a water-blocking wire along a sewing path through the two bending areas and the joining belt, so as to sew and fix the waterproof fabric to the joining belt.

The sewing method for cutting cloth of waterproof protective clothing provided by the preferred embodiment of the present invention utilizes the bending auxiliary jig 1 as shown in the second figure.

As shown in the second figure, the bending auxiliary jig 1 is provided with an opening H1, and the opening H1 is roughly in the shape of a horizontally placed M. Preferably, the bending auxiliary jig 1 has a first end S1 and a second end S2, and the opening H1 is larger at the first end S1 than at the second end S2.

In step S101, a plurality of tailored fabrics C1 and tailored fabrics C2 for stitching to form a waterproof protective clothing 100 are first prepared. The tailored fabric C1 has a joining area A1. The tailored fabric C2 has a joining area A2.

In step S102, the joining area A1 of the tailored fabric C1 is attached to the joining area A2 of the tailored fabric C2, and a joining belt M1 is formed. Moreover, after the joining area A1 of the cut cloth C1 is attached to the joining area A2 of the cut cloth C2, it will move in a first direction D1.

In step S103, the bending auxiliary jig 1 receives a waterproof fabric C3, and uses the opening H1 of the bending auxiliary jig 1 to make the waterproof fabric C3 form two adjacent temporary bending areas A3 and A4. It should be noted that the waterproof fabric C3 does not actually fill the entire opening H1, but only fills the middle part of the opening H1, so the cross-sectional view of the waterproof fabric C3 will be as shown in the third figure. Because the waterproof cloth C3 is cloth, the actual cross-sectional view may have a small difference in angle or shape from the third figure, but roughly corresponds to the middle part of the opening H1. In addition, the opening H1 is larger at the first end S1 than at the second end S2. Therefore, the waterproof cloth C3 can enter the opening H1 more easily and move in a second direction D2 within the opening H1. In practice, the second direction D2 is substantially perpendicular to the first direction D1, but it is not limited to this.

In step S104, when the waterproof cloth C3 is detached from the opening H1 of the second end S2, it will be manipulated to move in the first direction D1. The bending auxiliary jig 1 has two stoppers 11, so when the waterproof fabric C3 moves along the first direction D1, it will be limited by the stoppers 11, as shown in the fourth and seventh figures. At this time, the waterproof fabric C3 passes through the temporary bending areas A3 and A4 formed by the opening H1, and when the waterproof fabric C3 leaves the opening H1 and is restricted by the stopper 11, it folds toward each other to form two bending areas A5, A6. . Among them, the temporary bending area A3 becomes the bending area A5, and the temporary bending area A4 becomes the bending area A6.

In more detail, the junction of the temporary bending area A3 and the temporary bending area A4, that is, the top of the arc segment on the right in the third figure, will become the bending area after the two edges of the waterproof fabric C3 are folded back against each other. The junction of A5 and the bending area A6 is the vertical section on the right in the fifth figure.

Then, after the waterproof cloth C3 is separated from the opening H1 and moved in the first direction D1, the bending areas A5 and A6 of the waterproof cloth C3 will cover the joining belt M1 formed by the cutting cloth C1 and the cutting cloth C2, as shown in Figure 6 and Shown in the seventh figure.

In step S105, after the bending areas A5 and A6 are wrapped around the joining belt M1, a sewing needle 2 is used to repeatedly pass a water blocking wire L along a sewing path through the bending areas A5, A6 and the joining belt M1 , So as to sew the waterproof fabric C3 to the joint belt M1, as shown in the sixth and seventh figures.

Because of the relationship between the bending areas A5, A6 and the joining belt M1, the waterproof effect will be greatly improved, and the sewing method for cutting cloth of the waterproof protective clothing provided by the preferred embodiment of the present invention is implemented by using the bending auxiliary jig 1. Will make the steps easier and faster.

The tailored fabric C1 and the tailored fabric C2 may be at least one of the front side tailored fabric 101, the second sleeve tailored fabrics 102a, 102b, and the two rear side tailored fabrics 103a, 103b of the waterproof protective clothing 100. In addition, the two kinds of cut cloth C1 and cut cloth C2 are drawn graphically to form the joint belt M1, but it is not limited to this. In other embodiments of the present invention, the two sides of a single cut cloth (for example, cut cloth C1) may be attached to form the joint belt M1.

Generally speaking, the seams SE1a and SE1b of the two shoulders of the waterproof protective clothing 100, the seams SE2a and SE2b of the two sleeves, and the seams SE3a and SE3b of the side stitches are the key points of the waterproof protective clothing 100.

In the prior art, because the waterproof quality of the shoulder sutures SE1a and SE1b, the cuff sutures SE2a, SE2b, and the side sutures SE3a, SE3b is difficult to stabilize, it is difficult to meet the requirements of laws and regulations. Therefore, in the prior art, the shoulder stitches SE1a and SE1b, the sleeve stitches SE2a, SE2b, and the side stitches SE3a, SE3b have become the weakness of the waterproof protective clothing 100. Liquid and viruses can easily enter the waterproof type from the above positions. In the protective clothing 100, the risk of infection of the user is increased. In addition, the waterproof protective clothing 100 is easy to reduce its waterproof quality after being washed for many times. In particular, the more times of washing, the lower the waterproof quality.

After sewing the bending areas A5 and A6 of the waterproof fabric C3 to the joining belt M1 through the tailored fabric stitching method of the waterproof protective clothing provided by the present invention, the above-mentioned problems will be significantly improved.

In more detail, the joint belt M1 can be used to block the water or liquid when water or liquid penetrates due to pressure. The bending areas A5 and A6 of the waterproof cloth C3 are covered with the joint belt M1, which can help prevent water or liquid from penetrating into the joint belt M1.

The water-blocking wire L repeatedly passes through the bending areas A5 and A6 and the joining belt M1, and the waterproof fabric C3 can be sewn and fixed to the joining belt M1. The water blocking wire L has a water repellent effect. Therefore, the needle holes formed by the sewing needle 2 in the bending areas A5, A6 and the joint belt M1 will cause water or liquid to be compared with the previous ones due to the water repellent effect of the water blocking wire L. Technology, it is not easy to enter the waterproof protective clothing 100 from the pinhole.

There is no standard test method for the water-repellent effect of the water-blocking wire L, and the applicant of the present invention has verified the water-repellent effect of the water-blocking wire L through self-test. The test method is similar to immersing the water-blocking wire L and the general car line into the dyeing aqueous solution. After placing it for several hours, it is found that the dyeing aqueous solution has risen by 1 to 2 cm along the general car line, but the dyeing aqueous solution does not follow the barrier. The water-type wire L rises, thereby confirming that the water-blocking wire L has a water-repellent effect.

In this embodiment, the range of the metric number used by the sewing needle 2 is: 60 to 90 (Asian needle 8 to 14). The count of water blocking wire L is: Tex 24 to 60 or count of 50/2, 60/3, 40/2, 50/3, 30/2, 40/3, 30/ 3. 20/2. The hydrostatic pressure test results of the tailored fabric C1, the tailored fabric C2, and the waterproof fabric C3 are all greater than or equal to 20 cmH ₂ O, and preferably, are greater than or equal to 60 cm H ₂ O. The penetration test results of tailored fabric C1, tailored fabric C2 and waterproof fabric C3 are all less than or equal to 1 gram.

The above hydrostatic pressure test result value and the penetration resistance test result value are the Level 2 test standards of the four levels distinguished by ANSI/AAMI PB70. Among them, the hydrostatic pressure test result value refers to the result obtained through the AATCC 127 test Numerical value. The value of the penetration test result refers to the result value obtained through the AATCC 42 test. In the Level 2 test standard, the hydrostatic pressure test result value must be greater than or equal to 20cmH ₂ O, and the penetration resistance test result value must be less than or equal to 1 gram.

After the waterproof protective clothing 100 is stitched by the sewing method of the waterproof protective clothing provided by the present invention, the results of the above AATCC 127 and AATCC 42 tests are shown in Table 2 below. Table II AATCC 127 1 2 3 4 5 6 7 8 9 10 average value Before washing 44 46 48 50 44 50 42 48 48 40 46cmH ₂ O After 30 washes 44 41 50 45 35 46 43 43 48 49 44cmH ₂ O AATCC 42 1 2 3 4 5 6 7 8 9 10 average value Before washing ＜0.1g ＜0.1g After 30 washes ＜0.1g ＜0.1g

It can be clearly seen from the above-mentioned AATCC 127 test results of ten times that after the waterproof protective clothing 100 is stitched by the sewing method of the waterproof protective clothing provided by the present invention, it is not only the value of the hydrostatic pressure test result before washing The average value (46cmH ₂ O) far exceeds the Level 2 test standard (20cmH ₂ O), and even the average value (44cmH ₂ O) of the hydrostatic pressure test results after 30 washings is far beyond the Level 2 test standard.

The above ten test results of AATCC 42, regardless of whether the penetration resistance test result value before washing or after 30 washings, also meets the test standard of Level 2 (less than or equal to 1 gram).

In comparison with the previous technology, in the data published by DuPont, the test result of one stitched seam was only 6cmH ₂ O, and the test result of the other stitched seam only reached 20cmH ₂ O. , And the above test results are the test results before washing. If the value exceeds 20cmH ₂ O, an additional waterproof tape is required.

Therefore, after the waterproof protective clothing 100 is stitched by the sewing method of the waterproof protective clothing provided by the present invention, the waterproof effect is greatly improved, and experimental data confirms that the waterproof effect can meet the specifications even after washing. Therefore, the tailored fabric stitching method of the waterproof protective clothing provided by the present invention can be applied to various medical clothes that need to meet Level 2 and simply use the sewing method without additional waterproof tape.

In summary, the sewing method for cutting fabrics of waterproof protective clothing provided by the present invention uses bending auxiliary jigs, sewing needles and water-blocking wires to form the cut fabrics into a joint belt, and the waterproof fabrics form a bending zone and It is covered and sewn fixed to the joint belt. Compared with the prior art, the manufacturing process of the present invention is simpler, and only the sewing method (without using additional waterproof tape) can make the waterproof quality meet the regulations of the law . In addition, the waterproof quality of waterproof protective clothing after multiple washings, especially the waterproof quality of the shoulder stitches, sleeve stitches, and side stitches, can still meet the regulations of the law to reduce water or liquid ingress. The possibility of waterproof protective clothing, thereby reducing the user's risk of infection.

Based on the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, its purpose is to cover various changes and equivalent arrangements within the scope of the patent for which the present invention is intended.

1: Bending auxiliary fixture 11: Limit parts 2: sewing needle 100: Waterproof protective clothing 101: Front side cut fabric 102a, 102b: Cut fabric for sleeves 103a, 103b: Cut fabric on the back side A1, A2: junction area A3, A4: Temporary bending area A5, A6: bending area C1, C2: Cut fabric C3: Waterproof fabric D1: First direction D2: second direction H1: opening L: Water blocking wire M1: Bonding belt S1: first end S2: second end SE1a, SE1b: Shoulder suture SE2a, SE2b: cuff suture SE3a, SE3b: Close to the side suture

The first figure is a flow chart showing a method for sewing the tailored fabric of the waterproof protective clothing provided by the preferred embodiment of the present invention; The second figure is a schematic diagram showing the waterproof fabric entering the bending auxiliary jig and cutting fabric provided by the preferred embodiment of the present invention; The third figure is a schematic cross-sectional view showing the waterproof fabric of the second figure; The fourth figure is a schematic diagram showing the waterproof fabric leaving the bending auxiliary jig; Figure 5 is a schematic cross-sectional view showing the waterproof fabric of Figure 4; The sixth figure is a schematic diagram showing the waterproof fabric provided by the preferred embodiment of the present invention covering the tailored fabric; Figure 7 is a schematic cross-sectional view showing the waterproof fabric of Figure 6 covering the cut fabric; and The eighth figure is a schematic diagram showing the waterproof protective clothing.

Claims (9)

A sewing method of tailoring cloth for waterproof protective clothing includes the following steps: (a) Prepare a plurality of tailored fabrics to be stitched together to form a waterproof protective clothing; (b) One or two adjacent ones of the tailored fabrics form two joint areas, and the two joint areas are bonded together to form a joint belt; (c) Use a bending auxiliary jig to bend the two edges of a waterproof fabric facing each other to form two bending areas, and attach the two bending areas to the joint belt, so that the waterproof fabric covers the Bonding tape; and (d) Use a sewing needle to repeatedly pass a water-blocking wire along a sewing path through the two bending areas and the joining belt, thereby sewing and fixing the waterproof fabric to the joining belt. The sewing method of tailoring cloth for waterproof protective clothing according to claim 1, wherein the step (c) further includes: (c1) Use an opening of the bending auxiliary jig to form the waterproof fabric into two adjacent temporary bending areas; and (c2) After using the bending auxiliary jig to remove the waterproof fabric from the opening, the two temporary bending areas are folded back to form the two bending areas. The method for sewing tailored fabrics for waterproof protective clothing according to claim 1, wherein the tailored fabrics include at least one of a front side tailored fabric, two sleeve tailored fabrics, and two rear side tailored fabrics. The method for sewing tailored fabrics of waterproof protective clothing according to claim 1, wherein a hydrostatic pressure test result value of each of the tailored fabrics is greater than or equal to 20 cmH ₂ O. The method for sewing tailored fabrics of waterproof protective clothing according to claim 1, wherein the hydrostatic pressure test result value of each of the tailored fabrics is greater than or equal to 60 cmH ₂ O. The sewing method for cutting fabrics of waterproof protective clothing according to claim 1, wherein a hydrostatic pressure test result value of the waterproof fabric is greater than or equal to 20 cmH ₂ O. The sewing method of tailoring fabric for waterproof protective clothing according to claim 1, wherein the hydrostatic pressure test result value of the waterproof fabric is greater than or equal to 60 cmH ₂ O. The method for sewing tailored fabrics of waterproof protective clothing according to claim 1, wherein the value of the penetration test result of one of the tailored fabrics is less than or equal to 1 gram. The sewing method of tailoring cloth for waterproof protective clothing according to claim 1, wherein the value of the penetration test result of one of the waterproof cloths is less than or equal to 1 gram.

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