JPS63300707A - Production of shoes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a bag, and more particularly, to a method for manufacturing a cover-type bag such as a school bag.

rPrior art J Conventionally, in the case of a general bag with a cover lid, the front body part, the back body part and the cover part, which are formed integrally or separately, are cut separately, and each cut fabric is cut into a gusset and a bottom part. There are some bags such as handbags or extremely small bags such as pojets, although there are some cases where the front body part, bottom part, rear body part, and lid part are made of a continuous integral fabric. was limited to.

In other words, if you try to manufacture large bags such as school bags and handbags using this type of method in which the front body part, bottom part, rear body part, and cover part are made of a continuous one-piece fabric, the fabric will be very large. The main reason for this is that when natural leather is used, it is necessary to cut the front torso and back torso separately due to the cutting convenience of the fabric, but there are other reasons as well. Thick fabrics are used for bags in order to ensure durability, but if thick fabrics are folded in the same direction many times, dimensional errors will occur due to the difference in expansion and contraction between the front and back sides of the fabric due to the bending, resulting in poor sewing quality. The front and rear body parts are cut separately to eliminate this dimensional error. It's also to keep it to a minimum.

Problem to be solved by the invention J However, in a bag in which the front body part and the rear body part are cut and sewn separately, the front body part, the bottom part, the rear body part, and the cover part are continuous. Compared to products made from one piece of fabric, there are more seams, which makes the sewing more complicated.In addition, more fabric is used for each sewn part, and sometimes these seams are covered with hemmed fabric, etc. It is known that they have the disadvantage of increasing weight due to the need for encapsulation.

The invention was made in view of the above-mentioned drawbacks. Although the front body part, bottom part, rear body part, and cover lid part are manufactured from a continuous integral fabric, dimensional errors occur due to expansion and contraction due to bending, making it difficult to sew. To provide a method for manufacturing a bag that is less difficult, minimizes the tendency of the cover to be biased in the opening direction, and can easily manufacture a lightweight bag with fewer sewing parts. This is the purpose.

Means for Solving Problems j ′ In accordance with the above-mentioned object, the structure of the present invention, which is summarized in the above-mentioned claims, solves the above-mentioned problems by using a foam layer made of foamed synthetic resin or foamed rubber. A fabric material 1 made by laminating thin woven fabrics 1b and Ic on both the front and back sides of 1a forms a main body fabric 10 in which a front body part A, a bottom part B, a rear body part C, and a cover part are continuous, The main body fabric 10 is bent at a predetermined part so that the front body part A and the rear body part C become parallel planes, and the body fabric is further surrounded by the front body part A, the bottom part B, and the rear body part C. A pair of gossamer fabrics 2, 2 arranged on both sides of the body fabric 10 are molded from the same material as the main body fabric 10, and a predetermined width is formed on both side edges and bottom edge of both the hosiery fabrics 2.2. The flexible attached fabric 3 is sewn together so that a predetermined width thereof protrudes outward from the gossamer fabric 2, and the protruding parts of each of the flat fabrics 3 are connected to the front body part A, the bottom part B, and the rear body part C. overlap each edge, and further cover the overlapping portion of this flat fabric 3 and the edge with a bi-folded hemming fabric 4,
When sewing this hemming fabric 4 with sewing thread 9,
A technical measure has been taken in which the overlapping portions of the flat material 3 and the plain fabric 3 are sewn together.

``Function J'' Therefore, in the method for manufacturing the bag of the present invention, the main fabric 10 is the foam layer 1.
Since the fabric material 1 is made by laminating the woven fabrics 1b and 1c on both sides of a, the thick main body fabric 10 is used and the fabric material 1 is woven in the same direction many times (usually between the front body part A and the bottom part B, Between the bottom part B and the back body part C, between the back body part C and the cover part, and at the part where the cover part is folded back (4 times), the dimensions between the woven fabric Ib and Ic Errors are absorbed to some extent by the foam layer ja interposed in the middle, thereby minimizing dimensional errors that may cause wrinkles on the surface or interfere with sewing.

In addition, this body fabric 10 not only has sufficient tensile strength and tear strength depending on the materials of the woven fabrics 1b and Ic, but also has appropriate flexibility depending on the material and degree of foaming of the foam layer 1a. The part can be manufactured with good appearance, the cover lid part is not biased in the opening direction, and furthermore, when sewing the hemming fabric 4 of the cover lid part,
When sewing the inner side of the hemming fabric 4 on both sides of the cover (left and right direction of the bag) with a slight tension, the force of the hemming fabric 4 returning from the stretched state causes the body fabric 10 to be bent in the bending direction. This biasing force acts to adjust the appearance by canceling the force that is biased in the direction of opening the cover lid when the body fabric 10 is folded and tries to return.

Further, since the main body fabric 10 and the gossamer fabric 2 are sewn together through the band fabric 3, it is possible to firmly stitch the overlapping edges without making them thick. Normally, in order to overlap and sew thick fabrics, one side is thinly sliced and polymerized, which is called rukibatazugij, but the main body fabric 10 and the gusset fabric 2 of the present invention have thin woven fabrics 1b and 1c laminated on both sides. The desired strength can only be obtained by removing one side of the woven fabric. This fear can be eliminated by using the band fabric 3 having a strength of 100.degree. C., and the increase in thickness of the overlapping edge portion can be kept to a minimum.

Embodiment 1 Next, the present invention will be described in accordance with an embodiment of the school bag shown in FIGS. 1 to 8.

In the present invention, the fabric material 1 mainly used is a thin woven fabric 1b, I
A material made by laminating C is used.

The above-mentioned fabric material 1 is conventionally used for surfing wet suits or marine lifesaving suits, and is made of synthetic resin or rubber material mixed with a foaming agent on both sides of thin woven fabrics 1b and lc (usually highly elastic). It is the same as in the conventional method that the fabric material 1 having the desired thickness is obtained by laminating layers of woven fabrics and heating them to foam the synthetic resin or rubber material, but in the method of the present invention, Although it is not necessarily shown clearly in the figure, a coloring material layer made of a colored thermoplastic resin sheet or the like is further laminated on the woven fabric 1b on the front side to give the surface a desired color tone and to change the texture of the woven fabric 1b. None so as not to be noticeable.

In the method of the present invention, first, using the above fabric material 1,
Then, the bottom part B, the rear trunk part C, and the cover part form a body fabric 10 that is integrally connected, that is, a long fabric material 1 is shaped into the shape shown in FIGS. 3 and 4. The fabric material 1 used in the method of the present invention is cut to form the main fabric material 10, and the fabric material 1 before foaming is placed between appropriate male and female molds during heating for foaming. Since it is possible to form a desired uneven portion by heating the parts by sandwiching them, in the illustrated embodiment, the pocket bulge 30 is provided on the front body part A, and the back cushion bulge part is provided on the rear body part C. 40 is formed.

Although not shown in the drawings, there is no problem in providing decorative bulges in other parts such as the lid portion.

The pocket bulge 30 has a window hole 31 on the bulge surface and an opening 32 on the bulge side surface, and inside the window hole 31, a transparent plate 33 and a back plate 34 are overlapped to form an opening 32. The edges are fixed to the periphery of the window hole 31, leaving the sides intact, so that a timetable or the like can be inserted between the transparent plate 33 and the back plate 34. Further, a fastener (not shown) is arranged in the opening 32 by a conventional method.

In addition, the bulging portion 40 for the back cushion is located at the rear trunk portion C.
1: It is a hot theory that it is intended to provide appropriate elasticity, but it is not done so that the rear torso C is in reasonable contact with the back. That is, although this cushion bulge 40 is not shown as a U-shaped bulge in the figure, it adapts to the curvature of the back and the outer edge of the rear trunk C is also in close contact with the back to stabilize the school bag. In addition, if the entire surface of the rear torso C is in close contact with the back, the back will get stuffy in hot seasons such as summer, so an appropriate recess is placed between the back and the rear torso C to allow ventilation. The purpose is to secure a road.

Then, the main body fabric 10 is bent at a predetermined position so that the front body part A and the rear body part C become parallel planes. Prior to this bending, as shown in FIG. The above-mentioned transparent plate 33, back plate 34, and fastener,
Furthermore, it is preferable to provide a lining material 35. This transparent plate 3
3 and the back plate 34 are arranged as described above by leaving the opening 32 side and fixing the periphery to the periphery of the window hole 31 by means such as sewing, and the back fabric 35 covers the entire bulge 30. This bulging part 30 is made into a storage part PI (see FIG. 5) separated from the others, and the peripheral part of the lining fabric 35 is fixed by appropriate means such as gluing or sewing. In the illustrated example, this lining fabric 35 is shaped to cover the entire front body part A, and the lower part (left side in Figure 4) is sewn, but the rest is temporarily fixed with glue, and the edging described later is done. It is not necessary to sew them together when sewing the fabric 4.

Furthermore, a reinforcing plate 41 and a backing fabric 4 are provided on the back side of the rear body part C.
2 and, if necessary, store a cushioning material 43 such as a sponge inside the cushion bulge 40 (in the results of the trial production, the cushioning material 43 was not stored, as shown in FIG. 5). Appropriate cushioning performance was obtained even if the interior of the bulging portion 40 was left empty. Since the main body fabric 10 of this reinforcing plate 41 is flexible, if a heavy object is stored in a school bag made of this main body fabric 10 and carried on the back, the reinforcing plate 41 may be greatly deformed or the fixing part of the backpack belt may be damaged. In order to eliminate these defects, it is reinforced with a board material that has a certain degree of hardness, such as cardboard, plywood, or resin board. Note that this reinforcing plate 41
It is a matter of opinion that if a material with a good-looking surface is used, the lining fabric 42 that covers it can be omitted, and the arrangement of the reinforcing plate 41 and the lining fabric 42 can be done by gluing, sewing, etc. As in the case of the lining fabric 35, it is sufficient to fix or temporarily fix it to the back surface of the rear body part C by appropriate conventionally known means.

At this stage, that is, when the main fabric 10 is stretched flat, the bottom reinforcing plate 50. Although the lid locking device 60 and the backpack belt fixing device 70 may be fixed at predetermined locations, in this embodiment, these will be described later as they will be performed in a later step.

When the preparation of the main body fabric 10 is completed as described above, next, the front body part A, the bottom part B, and the rear body part C are folded at a predetermined position so that the front body part A and the back body part C become parallel planes. A pair of lint cloths 2.2 having a shape arranged on both sides of the main body cloth 10 surrounded by the body cloth 10 are molded with the same material 1 as the main body cloth 10, and both side edges of the double width cloths 2, 2 A flexible appendage fabric 3 of a predetermined width is sewn to the bottom edge portion of the fabric so that a predetermined width thereof protrudes outward from the lint fabric 2. This flexible fabric 3 is usually called lace, has appropriate strength and flexibility, and also has elasticity, so that even if it is sewn along the curved edge, it is called ``Kikuyose A''. A material that does not wrinkle is used.The edge of this flexible accessory fabric 3 is aligned with the edge of the blessing fabric 2, the middle surface is overlapped, and after sewing along the edges of both, the flexible band fabric is 3 is not used to form a so-called fold-down stitch, but it is also possible to simply overlap the edge of the flexible auxiliary fabric 3 on the edge of the goss fabric 2 to a predetermined width and sew this overlapping part. .

Next, the protruding parts of the belt binding material 3 are superimposed on the respective edges of the front body part A, the bottom part B, and the rear body part C, and the belt binding material 3 and the edges of the gossamer fabric 2 are overlapped with each other. The overlapping part of the main body fabric material 1 and the strapping material 3 is covered with a bi-folded hemming fabric 4, and when the hemming fabric 4 is sewn, the overlapping part of the main body fabric material 1 and the strapping fabric 3 is sewn together.

This hemmed fabric 4 may be hemmed with a series of edges around the entire circumference of the main body fabric 10, but the upper end of the front body part A (right end in Fig. 3.4) has widths of 2, 2. Another edging fabric 4a for edging the upper end may be used to form the edging from one rug 2 through the upper end of the front trunk A to the other rug 2, and furthermore, the edging fabric 4 .4a may be used by separating or joining them at appropriate locations.

By doing this, the main storage part P2 (see Fig. 5) is formed by the front body part A, the bottom part B, the rear body part C, and the lint cloth 2.2. The school bag main body R shown in FIG. 1 is composed of the body part A, the bottom part B, the rear body part C, the above-mentioned gossamer fabric 2.2, and the cover part. The main storage portion P2 may be divided into a plurality of parts by providing partition plates 6 having both ends fixed to the lint cloth 2.2.

In addition, in the figure, 50 is a bottom reinforcing plate arranged on the inner side of the bottom B of the main body fabric 10 in the school bag body R (the front side in FIG. 4), and a lid body stopper arranged on the outside of the bottom surface of the school bag body R. 6
It is riveted together with 0. This lid stopper 60 is a conventionally known one, and has a suction locking piece 7 attached to the tip of the lid.
is attracted by a permanent magnet (not shown), and the locking twist portion 6
1 to be removably locked. This lid stopper 60 also serves as a fitting for attaching one end of the backpack belt 5.5, and has rings 62.62 at both ends, and this rod 62.6
Connecting belts 5a, 5a connecting one end of the backpack belt 5.5 are attached to the connecting belt 2.

Furthermore, FIGS. 6 and 7 show a synthetic resin backpack belt fixing device 7o that is fixed to the upper center of the rear torso C, and has a protrusion 72 with ring insertion holes 73 and 73 at both ends. It consists of a base plate 71 having a base plate 71, a cover integral 75 having an insertion window 74 for the protrusion 72, and a ring 76 whose both ends can be fitted into the protrusion 72. The protrusion 72 is disposed on the inner side of the lining fabric 42) so as to penetrate through the reinforcing plate 41, the lining fabric 42, and the main body fabric 10 and protrude to the outside thereof. A cover unit 75 is put over from the side, and the base plate 71 and cover unit 75 are screwed together and fixed with fixing screws 77, 77, and the backpack belts 5, 5 are connected to the chain ring 76. Fixture 70 and the bottom reinforcing plate 50 and lid stopper 6o mentioned above
is not limited to the illustrated example, and various conventionally known methods may be used.

Furthermore, in FIG. 1, 8 indicates a hanging ring, which is wrapped around one side with a bi-folded fixing belt, and is attached to the main body fabric 10 by sewing or the like.
The main body can be hung from a wall hook or the like.

Effects of the Invention J The present invention is as described above.
A fabric material 1 is formed by laminating woven fabrics 1b and 1c on both sides of a foam layer 1a made of foamed synthetic resin or foamed rubber.
Therefore, it is possible to provide a method for producing a bag that can be significantly lighter in weight compared to conventional bags using natural leather or artificial leather.

In addition, the method of the present invention provides a front body part A, a bottom part B, a rear body part C,
Since the cover and lid part are formed in a continuous manner, there are fewer seams than when the front body part and the back body part are separate, making it easy to sew, and it is easy to sew the specified parts. It is possible to provide a method for manufacturing a bag that is lightweight and has an innovative design, which can omit fabric.

In addition, the fabric material used in the present invention can not only be industrially produced in a desired size, but also have the desired strength and flexibility, and is free from wrinkles caused by bending and the inner and outer surfaces caused by bending. It is also possible to provide a bag manufacturing method that prevents problems with sewing due to dimensional errors and prevents the cover from being biased in the direction of opening, thereby manufacturing a bag that is inexpensive and has a good appearance. It is.

Furthermore, in the wooden invention, the main body fabric 10 and the gossamer fabric 2 are sewn together via the strapping area 3, so the overlapping edges of the main body fabric 10 and the gossain fabric 2 can be sewn together firmly without making them thick. It is also possible to provide a method for manufacturing bags that can

In addition, since the method of the present invention allows the fabric material 1 to bulge into a desired shape at a desired portion, the bulging portions for pockets and cushions can be placed in appropriate locations to create a bag with a sense of unity compared to the conventional method. This also has the effect of being easy to manufacture.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a school bag manufactured by the method of the present invention, Fig. 2 is an enlarged sectional view of the fabric used in the method of the present invention, and Fig. 3 is a plan view of the main body fabric formed by cutting the fabric. , Fig. 4 is a back view of the main body fabric, Fig. 5 is a partial cross-sectional view, Fig. 6 is a front view of the backpack belt fixing device used in the method of the present invention, and Fig. 7 is the backpack belt fixing device. FIG. 8 is a partially omitted bottom view of the school bag manufactured by the wooden invention.

Claims (1)

[Scope of Claims] A fabric material 1 consisting of a foamed layer 1a made of foamed synthetic resin or foamed rubber, and thin woven fabrics 1b and 1c laminated on both the front and back sides, comprising a front body part A, a bottom part B, and a rear body part C. Forming a main body fabric 10 in which the cover and lid portion D are continuous, bending the main body fabric 10 at a predetermined part so that the front body part A and the rear body part C become parallel planes, and further, A pair of gossock fabrics 2, 2 having a shape arranged on both sides of the main body fabric 10 surrounded by A, the bottom part B, and the rear body part C are molded from the same material as the main body fabric 10, , 2, a flexible band fabric 3 of a predetermined width is sewn to the edges of both sides and the bottom edge of each of the band fabrics 3 so that a predetermined width thereof protrudes outward from the lint fabric 2. The protruding parts are superimposed on the respective edges of the front body part A, the bottom part B, and the rear body part C, and the overlapping parts of the band fabric 3 and the edges are further covered with a bifold-shaped hemming fabric 4,
When sewing this hemming fabric 4 with sewing thread 9,
A method for manufacturing a bag in which the overlapping parts of the and band fabric 3 are sewn together.