TW201928141A - Waterproof seam structure - Google Patents

Abstract

Provided is a waterproof seam structure with which, when producing clothing, etc. using waterproof or water-repellent fabric, parts in which two sheets are joined together can be sewn with a plain seam as in the past. A waterproof or water-repellent first fabric 1 and a waterproof or water-repellent second fabric 2 are sewn together with a plain seam 3. In the plain seam: the upper thread 31 is a stretchable and water-repellent filament yarn and the lower thread 32 is a water-repellent wooly finish yarn; the seam is sewn with at least 15 needle holes per 3 cm; and the seam allowance is pressed to one side.

Description

Waterproof seam structure

The invention relates to a waterproof seam structure of clothes.

Since the manufacture of waterproof clothing such as rain gear and waterproof work clothes for mountaineering, we have been working to prevent water from entering the inside of the clothing from the stitches.

For example, Japanese Patent Application Laid-Open No. 8-92868 (Patent Document 1) discloses that when manufacturing a garment using a tarpaulin with a thermoplastic resin film laminated on a fiber-based cloth, the ends of two tarpaulins are overlapped to make the thermoplastic resin The film layers are opposite to each other, and a first heat-sealing sealing material is arranged between the overlapped two to make a flat seam. One tarpaulin is folded back along the suture line, and a second heat-sealing sealing material is arranged at the folded-back portion to over seam ( In other words, stitches for crimping), stitch the folded tarpaulin, the second heat-sealing material, the seam portion of the folded tarpaulin, the first heat-sealing material, and the other tarpaulin. The high-frequency welding machine presses and fuses the stitches.

In addition, Japanese Patent Laid-Open No. 9-41208 (Patent Document 2) discloses that when fabrics are manufactured using a water-repellent grey cloth (resin-free coated grey cloth) that has not been coated with resin, two pieces of grey cloth are stitched with flat stitches. The stitched end is tilted in one direction, and the seam is fixed with a stitch, and the stitch is covered with a stitch crimp. The stitch crimp is made of a high-melting resin and a low-melting resin. It consists of an adhesive resin film.

In addition, Japanese Patent Laid-Open No. 7-216727 (Patent Document 3) discloses that when two sheets of tarpaulin are sewn, a stitched end portion of one cloth A is folded back, and the other cloth B is inserted into the folded portion. The suture end is stitched in an overlapping state with 3 pieces, and the cloth A is further folded in a zigzag shape in a direction opposite to the direction of the fold back of the suture end, and the overlap is stitched in a state of 4 pieces.
[Prior technical literature]
[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 8-92868
[Patent Document 2] Japanese Unexamined Patent Publication No. 9-41208
[Patent Document 3] Japanese Patent Application Laid-Open No. 7-216727

[Problems to be Solved by the Invention]

Regarding the waterproof seam at the time of manufacturing clothes and the like, the method disclosed in the above-mentioned Patent Document 1 is based on the premise that a waterproof sheet with a laminated thermoplastic resin film is used for the fiber-based cloth, and it is not suitable for a case where the resin is not coated.

In addition, although the first and second hot-melt sealing materials are finally melted under pressure using a high-frequency welding machine, the hot-melt sealing materials after pressure and melting are exposed from the stitches and can be seen from the outside and inside of the clothes. In particular, when the first hot-melt sealing material arranged between two tarpaulins is exposed from the seam, it is seen from the outside of the clothes, so there is a problem. In addition, when the first heat-sealing material and the second heat-sealing material are exposed from the seam allowance, the problem of seeing from the inside of the clothing also occurs.

In the method disclosed in the above Patent Document 1, the second heat-sealing material is disposed on the seam portion (seam portion) of the tarpaulin A1, and then the tarpaulin A1 is folded back and fixed to the tarpaulin A1 by a seam. When the tarpaulin A1 is folded back, the second hot-melt sealing material has not been fixed at any position, so there is a problem of position deviation.

In addition, when the tarpaulin is to be stitched in a curved shape, it is difficult to correctly fold the tarpaulin A1 and the second heat-sealing material is misaligned. Therefore, the curved ends cannot be stitched in practice. Most of the sewing of clothes involves stitching the curved end cloths of the respective tabs, and in particular, the curved end portions are formed at the sleeves. Therefore, the method disclosed in Patent Document 1 cannot be applied.

Although the method disclosed in the above Patent Document 2 is not suitable for the case where an uncoated resin is used, the stitching tape is adhered to the covered stitching portion. Therefore, the stitching tape can be seen from the inside of the garment to stick to the stitching place. In all cases, it may have a shape different from that of ordinary clothes. For example, a problem may arise in that the joining cloth is in abutment.

In the stitching method disclosed in the above-mentioned Patent Document 3, the stitch structure made by the stitching is formed into a four-layer overlapping structure, so that the stitching place becomes thicker, which leads to violations, poor wearing feeling of clothes, and poor appearance. In addition, since the end portion is folded back for sewing, there is also a problem that sewing of a curved portion is difficult to perform.

The present invention is intended to solve a conventional problem, and to provide a waterproof that can be used to form two pieces of joined tabs in the same manner as in the conventional sewing (flat stitching) when manufacturing clothes or the like using waterproof or water-repellent cloth. The seam structure is a seam structure that does not impair the waterproof function even if a decorative seam or a seam seam is provided in parallel with the seam of a seam of a garment or the like.

The present invention aims to provide a stitch structure that is also suitable for curvilinear stitching and has the same shape as that of ordinary clothes when viewed from the outside of clothes or the like. And provide cloth products such as clothes, umbrellas, tents, etc. with the above seam structure.

[Means for solving problems]

According to the present invention, the first cloth having water-repellent or water-repellent properties and the second cloth having water-repellent or water-repellent properties are stitched with a flat seam. The water-repellent wool-like processing line features a waterproof seam structure featuring 15 or more stitches per 3 cm of stitch holes and reverse stitching.

According to the present invention, the first cloth having water-repellent or water-repellent properties and the second cloth having water-repellent or water-repellent properties are stitched with a flat seam. A water-repellent wool-like processing line is sewn at least 15 per 3 cm of pinholes to perform reverse stitching, and a decorative stitch is applied to the stitching portion. The decorative stitch is an elastic and water-repellent filament on the upper line, and a water-repellent wool-like processing thread on the lower line. 8 to 14 stitches per 3 cm are stitched, and the upper line of the decorative stitch is displayed on the cloth product. The waterproof seam structure featured on the front side of the device achieves the above purpose.

The above-mentioned object is achieved by a cloth product having the above-mentioned stitch structure.

[Inventive effect]

According to the present invention, although the first cloth having water repellency or water repellency and the second cloth having water repellency or water repellency are sewn with a flat seam, in the above seam, the combination:
(A) Threaded with elastic and water-repellent filaments
(B) Take the water-repellent wool-like processing line as the lower line
(C) 15 stitches per 3cm of stitches
(D) The four constituent elements of the back seam allowance are obtained to obtain a sufficient waterproof effect.

The combination of elastic and water-repellent filaments is used as the upper thread, and water-repellent fleece processing thread is used as the lower thread, thereby sewing with a normal sewing machine so that the intersection of the upper thread and the lower thread is closer to the upper thread side. (In addition, when the upper thread is an ordinary sewing machine thread without elasticity, the above state will not occur.)
In addition, the pinholes of the cloth formed on the upper thread side are blocked by the upper thread and the heavy wool-like processing line. Both the upper and lower threads that block the pinholes are water-repellent, so that water can be prevented from entering the inside of clothing, etc., from the pinholes on the upper thread side.
In addition, since 15 or more stitches are sewn every 3 cm to make the stitches extremely thin and the back stitching is performed, water can be prevented from penetrating into the inside of the garment or the like from between the stitches (stitch).

And, even in the case where decorative stitches are applied to the seam allowance, the decorative stitches are combined:
(E) Threaded with elastic and water-repellent filaments
(F) Take the water-repellent wool-like processing line as the lower line
(G) 8 to 14 stitches per 3 cm of pinhole
(H) Sewing the four constituent elements that make the upper thread of the decorative stitch appear on the front side of the cloth product, thereby obtaining a sufficient waterproof effect.

Although the decorative stitches are stitched with one piece of cloth on the front side and two pieces of cloth with seams, by using elastic and water-repellent filaments as the upper thread and water-repellent wool-like processing lines as the lower thread As in the case of flat stitching, the intersection of the upper thread and the lower thread is brought closer to the upper thread side, and the pinholes of the cloth formed on the upper thread side are blocked by the upper thread and the wool-like processing line. At this time, 8 to 14 stitches are made every 3 cm of the pinhole, so that the length of the decorative stitch is longer than that of the flat stitch (stitch). The number of pinholes is reduced, and the danger of damaging the waterproof function is reduced.

According to the present invention, the waterproof seam structure does not require special know-how. It can be sewn with a normal sewing machine, and even a curved seam can still form a beautiful seam. Moreover, since no waterproof tape or the like is used, the manufacturing steps of cloth products such as clothes are simple and can be obtained at low cost.
The garment having the waterproof seam structure of the present invention has no foreign body sensation at the seam, and has the same good wearing feeling as ordinary clothes.

The waterproof seam structure of the present invention is composed of two pieces of cloth and upper and lower threads. The waterproof seam structure of the present invention is a waterproof or water-repellent place suitable for clothes, backpacks, hats, umbrellas, tents, sleeping bags, etc. Necessary sewing of 2 pieces of cloth.

The cloth used in the present invention is not particularly limited as long as it is waterproof or water-repellent cloth, and cloths that have been conventionally used in rain clothes, windbreakers, and the like can be used. For example, a high-density fabric, or a cloth with a water-repellent or water-repellent finish, a base cloth with a synthetic resin coating, or a base cloth with a synthetic resin coating layer formed by lamination can be used.

In the present invention, the threads used on the flat stitches and decorative stitches are elastic and water-repellent filaments. Various types of elastic filaments are commercially available, but the threads used as the upper thread of the present invention are preferably elastic filaments having an elongation of 25 to 40%. In addition, water-repellent processing is applied in the state of filaments, followed by twisting to form threads. However, water-repellent and water-repellent power are better.

In the present invention, the thread used in the flat stitching and the lower line of the decorative stitching is a water-repellent wool-like processing line (that is, a large-volume processing line). Moreover, in the present invention, the wool-like processing line is not a highly stretchable line, and a low stretchable line is used, and the elongation is 25 to 40%, which is preferably the same as that of the upper line.
The thickness of the upper thread and the lower thread (dtex) are preferably points that are not different from each other and are easy to sew. At the same thickness, the look and feel (appearance) is that the filaments are thin, and the wool-like processing line is bulky and fluffy to form a rough appearance.
In addition, the stitching line and the stitch line of the decorative stitch may be lines of the same thickness, or different lines such as a thicker stitch line.

In the sewing machine of the present invention, the stitches of the flat stitch are 15 or more pinholes per 3cm, and the decorative stitches are 8 to 14 pinholes per 3cm. The sewing machine needle is preferably a sewing machine needle having a narrow point having a spherical point.

Hereinafter, the stitch structure of the present invention will be described in detail based on examples shown in the drawings.
1 to 4 show a first embodiment of the stitch structure of the present invention.
As shown in Fig. 1, the first cloth 1 having water repellency or water repellency is overlapped with the second cloth 2 having water repellency or water repellency on the middle surface, and the ends of the cloths 1 and 2 are sewn by a sewing machine (that is, flattened). Slit) to form a seam 3. In the first figure, reference numeral 1b indicates the inner surface of the first cloth 1, and reference numeral 2a indicates the surface of the second cloth 2.

FIG. 2 is an enlarged cross-sectional view schematically showing the seam 3 surrounded by a circle in the first diagram. The upper line 31 and the lower line 32 cross to form a seam. When sewing by a general sewing machine, adjust the intersection 30 so that the thickness of the cloths 1 and 2 is in the middle. In the case of the present invention, it is adjusted to a normal sewing machine, but the upper thread 31 is made of elastic filaments, and the lower thread 32 is made of wool-like processing threads. Therefore, even if the elongation is the same, the elasticity recovery force is on the filament side It is higher than the wool-like processing line, so the wool-like processing line 32 is stretched by the elastic filament, so that the intersection 30 between the two becomes the upper line side. As described above, the wool-like processing thread 32 is positioned near the needle hole on the upper thread side. Although the wool-like processing thread 32 applies tension during sewing, it does not apply tension after sewing, so it appears in a crimped state and blocks the pinhole.

Next, as shown in FIG. 3, the overlapped cloths 1 and 2 are reversely stitched in a state where the seam portions 11 and 21 of the cloths 1 and 2 are overlapped at the flat seam (seam) 3. In this way, the flat seam 3 will not appear on the front sides 1a, 2a of the cloths 1, 2. Therefore, although it is only necessary to prevent the intrusion of water from the direction of arrow A in FIG. 3, the present invention uses a thread having elasticity in both the upper thread 31 and the lower thread 32, so that the cloths 1 and 2 can be sewn without a gap. In addition, the flat seam has a thin seam, so water does not penetrate between the seams and can be completely waterproof. In addition, FIG. 4 illustrates that a gap is provided between the cloth 1 and the cloth 2 for easy understanding of the sewing state, but the actual seam structure does not generate such a gap.

The following method was used to perform the water leakage test using the above seam.
Attach test paper (filter paper) to the mannequin. Wear clothes sewn with the seam structure of the present invention thereon, and use artificial rainfall devices to carry out rainfall for 20 minutes from 130 cm above the mannequin with a rainfall of 20 ± 2 mm / h.
After the rain, remove your clothes and watch whether the filter paper inside is wet, and make sure that the filter paper is not wet.

5 to 8 show a second embodiment of the stitch structure of the present invention.
In this embodiment, flat stitching is performed as in the first embodiment, and the stitching points 11 and 12 are reversely stitched to form a structure in which a decorative stitch 4 is applied.

In the present invention, as shown in FIG. 5, the sewing machine 21 performs sewing of the decorative stitch 4 from the front sides 1 a and 2 a of the cloths 1 and 2 in a state where the seam points 21 cannot be seen. As in the case of the flat stitching, the decorative stitch 4 uses an elastic filament for the upper thread 41 and a wool-like processing thread for the lower thread 42. Even if the elongation is the same, the restoring force of elasticity is higher on the filament side than the wool-like processing line. Therefore, the wool-like processing line 42 is stretched by the elastic filament 41, so that the intersection 40 between the two becomes the upper line side. . As described above, the wool-like processing line 42 is positioned near the needle hole on the upper side. Although the wool-like processing line 42 applies tension during sewing, it does not apply tension after sewing, so it appears in a crimped state and blocks the pinhole. Therefore, as shown in FIG. 7 and FIG. 8, although the pinholes are present on the front side 1a of the cloth 1, the pinholes are blocked by the water-repellent filaments 41 and the water-repellent wool-like processing line 42, so water can be prevented. Invaded from the pinhole. In addition, FIG. 7 is similar to FIG. 4 in order to easily understand the stitching state. It is described that a gap is provided between the cloth 1 and the cloth 2, but the actual seam structure does not generate such a gap.

Specific examples of the use line of the present invention are shown below.
Threading of flat stitches and decorative stitches: "Resilonf" by FUJIX Co., Ltd. 30% elongation, thickness 245dtex, 100% nylon made of water-repellent threads.
Off-line of flat stitching and decorative stitching: "WOLLYS" of FUJIX Co., Ltd. 28% elongation, 255dtex thickness, 100% polyester made of water-repellent thread.

1‧‧‧ Cloth

2‧‧‧ Cloth

3‧‧‧ flat stitching

4‧‧‧ Decorative stitches

5‧‧‧ 2nd stitch

6‧‧‧Edged seam

11‧‧‧ Seam allowance for cloth 1

21‧‧‧Seam allowance for cloth 2

1a‧‧‧ surface of cloth 1

1b‧‧‧ Cloth 1

2a‧‧‧ surface of cloth 2

2b‧‧‧ Cloth 2

30‧‧‧ Intersection of upper and lower threads with flat stitching

31‧‧‧ Sewing on the thread

32‧‧‧ Off-line sewing

40‧‧‧ Intersection of upper and lower lines of decorative stitches

41‧‧‧Decorative stitching goes online

42‧‧‧ Offline of decorative stitches

FIG. 1 is a plan view showing a state where two pieces of cloth are sewn with a flat seam.

Fig. 2 is an enlarged cross-sectional view schematically showing a seam portion surrounded by a circle in Fig. 1.

Fig. 3 is a plan view showing a state in which the cloth shown in Fig. 1 is reversed.

Fig. 4 is an enlarged sectional view of the object shown in Fig. 3;

Fig. 5 is a plan view of the state shown in Fig. 3 after further applying decorative stitching to the object shown in Fig. 3 when viewed from the front side.

Fig. 6 is a plan view of the object shown in Fig. 5 as viewed from the inside.

Fig. 7 is an enlarged sectional view of the object shown in Fig. 5.

Fig. 8 is an enlarged sectional view similar to Fig. 2 which schematically shows the stitches of the decorative stitches.

Claims (3)

A waterproof seam structure is characterized in that a first cloth having water repellency or water repellency and a second cloth having water repellency or water repellency are stitched by a flat seam, and the flat seam is a filament with elasticity and water repellency on the upper thread. The lower thread is a water-repellent wool-like processing line, with more than 15 pinholes formed every 3cm for reverse stitching. A waterproof seam structure is characterized in that a first cloth having water repellency or water repellency and a second cloth having water repellency or water repellency are stitched by a flat seam, and the flat seam is a filament with elasticity and water repellency on the upper thread. The lower thread is a water-repellent wool-like processing line. More than 15 pinholes are formed every 3cm for reverse stitching. The seam allowance is applied with a decorative stitch. The decorative stitch is elastic and elastic on the upper thread. Water-based filaments have a water-repellent wool-like processing line, with 8 to 14 pinholes formed every 3 cm, and the upper line of the decorative stitches is sewn on the front side of the fabric. A cloth product characterized by having a seam structure described in item 1 or 2 of the scope of patent application.