JPH0611934B2 - Method for manufacturing a rope having a loop - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cord with a loop for use in a hanging string for fluorescent lamps, a hanging string for window blinds and the like.

2. Description of the Related Art As a hanging string for a fluorescent lamp or a window blind, a string made of metal or plastic is tied to both ends of the string (see FIG. 10), and both ends of the string are bent into a loop. , The part corresponding to the neck of the loop is fixed with a thread (see Fig. 11), the string is inserted through the hollow circular truncated cone shaped knob made of plastic, and the end of the inserted string is retained. It is known that a hump is formed because it is difficult to get rid of (see FIG. 12).

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, during the manufacturing process of such a hanging cord, the tying process, the threading process, the threading process, and the bump forming process are manually performed one by one. Therefore, even though it is a small product, it takes manpower to manufacture the product, which results in poor productivity. Moreover, there is a large unevenness in each product, and a problem such as a knot being unwound during use of the product may occur.

In view of such a situation, the present invention has been achieved as a result of earnest research to find a method for obtaining a homogeneous product while omitting manual steps as much as possible.

Means for Solving the Problems In the method for manufacturing a string having a loop according to the present invention, a step (A) of obtaining a tubular woven fabric by bag-weaving, a front surface and a back surface of the woven fabric obtained in the previous step are partially unbonded portions. It is characterized in that it comprises a step (B) of fixing it linearly or planarly along the warp running direction while leaving it, and a step (C) of chopping the woven fabric which has undergone the previous step in the weft running direction. By finding a specific manufacturing method using a woven fabric as described above, the above-mentioned conventional problems have been solved all at once.

Hereinafter, the method of the present invention will be described in detail.

Step (A) Step (A) is a step of obtaining a tubular woven fabric by bag-weaving.

The double weave is a type of double weave, and is a method of arranging an odd number of warp yarns and weaving two overlapping plain weave fabrics.
According to this method, one weft thread reciprocates two times to form one loop, and eventually the weft thread advances spirally to form a tubular shape, and a tubular weaving in which the front and back sides are joined at both ends. A structure is obtained. The woven fabric obtained by the bag-weaving is seamless and homogeneous.

As the warp yarn and the weft yarn, any yarn made of natural fiber, regenerated fiber, semi-synthetic fiber, synthetic fiber, inorganic fiber, fine metal wire or the like can be used. It is also possible to use a thread having elasticity, a thread obtained by super-drawing a plastic filament (for example, polyacetal), or the like.

Step (B) Step (B) consists of fixing the front and back of the woven fabric obtained in the previous step in a linear or planar shape along the warp running direction while leaving some non-fixed portions.

The front and back of the woven fabric are fixed by sewing, sewing, application / impregnation of an adhesive, adhesion by interposition of an adhesive film, welding with a hot blade, high-frequency welder, laser beam, or the like.

The fixation is performed in a linear or planar shape along the warp running direction.
At this time, a portion not fixed is left along the warp running direction.

The non-adhered part (1) and the adhered part (2) are adhered so that there is at least one each. For example, one end of the woven fabric is the non-fixed part (1) and the rest is the fixed part (2) (1).
(2) / (1), including (1) / (2) / (1), where both ends are non-fixed parts (1) and the central part is the fixed part (2). / (2), (1) / (2) /
(1) / (2) / (1), (1) / (2) / (1) /
A configuration such as (2) / (1) / (2) / (1) is adopted.

Step (C) Step (C) consists of chopping the woven fabric that has undergone the previous step in the weft running direction.

As the shredding method, a method of mechanically slitting, a method of heat cutting with a hot blade or a laser beam, and the like are adopted.

It is desirable that the woven fabric or shredded material be subjected to resin processing before or after weaving and after shredding. The resin processing facilitates shredding and prevents fraying from the shredding end face even when mechanically slitting. Furthermore, the shredded material has strength, rigidity, or waterproofness, flame retardancy, and protection against shattering. This is because wrinkle properties, antifouling properties, and the like will be imparted.

When the non-fixed part (1) of the shredded object is expanded, it becomes a loop and the fixed part (2) becomes a straight part, so that the target string with a loop can be obtained.

The string produced by the method of the present invention is a hanging string for a fluorescent lamp,
Suspension string for window blinds, air conditioner switching, washing machine drainage switching, bag or bag carrying handle, string for fixing luggage to cargo bed, connecting string, binding string, product display, tools and kitchen utensils -Useful for various purposes such as clothes, ties, laundry, name tags, and accessories.

Operation In the cord obtained by the method of the present invention, the loop formed from the non-fixed portion (1) serves as the locking portion and the hook portion. It is also possible to fasten the object by fitting a spring-shaped ring into the loop or inserting the object into the string and then inserting one end of the string into the loop. Since the cord obtained by the present invention has a structure in which the loop is integrally connected to the cord, it can sufficiently withstand the pulling force.

EXAMPLES Next, the present invention will be further described with reference to examples.

Example 1 A nylon multifilament yarn containing a low melting point nylon fiber was used as a warp and a weft, and a woven fabric having a width of 12 cm and having a seamless perspective as shown in FIG.

Next, the woven fabric was adhered to the front and back sides of the woven fabric along the warp running direction by melting the low-melting nylon fiber by pressing the other portions of the woven fabric with 2 cm of both ears left by pressing with a heating roll. After the adhesion, the sewing machine sewed along the warp running direction at the boundary between the fixed portion (adhered portion) and the non-fixed portion. This allows
As shown in the perspective view of FIG. 2, the non-fixed portions (1) and (1) are connected to both ends of the fixed portion (2) (1) / (2) /
A woven fabric having the configuration of (1) was obtained. In addition, in the figure (2
a) is a fixed part by perforation.

Then, this woven fabric was cut into 2 mm width using a hot blade in the weft running direction. After shredding, the unfixed parts (1), (1) at both ends were expanded, and a 12 cm long string having loops at both ends as shown in the plan view of FIG. 3 and the front view of FIG. 4 was obtained. Was obtained.

Example 2 A rayon / acrylic mixed fiber yarn was used for the warp and the weft, and a seamless woven fabric having a weaving width of 50 cm was woven by means of a hollow weave.

Next, after impregnating this woven fabric in a thermosetting resin solution, squeezing it, inserting an anti-adhesive plate with a width of 2 cm into the two ends of the ears and the central part, and curing the other parts under pressure, The front and back fabrics were adhered together with the curing of the resin. As a result, as shown in the perspective view of FIG. 5, the structure of the non-fixed portion (1) / fixed portion (2) / non-fixed portion (1) / fixed portion (2) / non-fixed portion (1) is set. A woven fabric having was obtained.

Then, this woven fabric was cut into 3 mm widths with a slitter in the weft running direction. After shredding, the fixed parts (1) at both ends,
When (1) and the non-fixed portion (1) of the central portion are expanded,
As shown in the plan view of FIG. 6, a cord having a length of 50 cm having loops at both ends and the central portion was obtained.

Examples 3 to 5 In the same manner as in Example 1 or Example 2, a seamless woven fabric was woven by a hollow weave, and then the front and back sides of the woven fabric were fixed along the warp running direction to form the non-fixed portion (1). By forming the fixing portion (2) and then chopping this woven fabric in the running direction of the weft, a string with a loop as shown in the plan views of FIGS. 7 to 9 was produced.

EFFECTS OF THE INVENTION In the method of the present invention, since there are no manual steps such as the step of forming a knot and the step of winding with a thread as in the conventional case, the productivity is remarkably improved and there is no unevenness in each product.

And, the cord having a loop obtained by the method of the present invention, since the loop and the other portion are integrally connected without a seam, it is homogeneous and sufficiently endures the pulling force,
The appearance is also favorable. Further, since the loop has no knot, there is no problem such as unraveling the knot during use of the product as in the conventional case.

Further, since it is made of a woven fabric, it can be provided with any strength by selecting the materials of the warp and the weft, and it is possible to prevent the cord from being stretched by pulling, thereby meeting the required quality. On the other hand, when it is required that the cord stretches with respect to the tension, the demand can be met by selecting the material of the warp or weft or the weaving method.

[Brief description of drawings]

1 to 4 are explanatory views showing an example of the present invention.
The figure is a perspective view of a fabric woven by bag weaving, Fig. 2 is a perspective view of a fabric having a non-fixed portion and a fixed portion, and Fig. 3 is a string obtained by shredding the fabric of Fig. 2. A plan view and FIG. 4 are front views thereof. 5 to 6 are explanatory views showing another example of the present invention,
FIG. 5 is a perspective view of a woven fabric in which a non-fixed portion and a fixed portion are formed, and FIG. 6 is a plan view of a string obtained by shredding the woven fabric of FIG. 7 to 9 are plan views showing another example of the cord obtained by the present invention. 10 to 12 are plan views showing an example of a conventional hanging strap. (1): Non-fixed part, (2): Fixed part, (2a): Perforated part

Claims (1)

[Claims] 1. A step (A) of obtaining a tubular woven fabric by bag-weaving, the front and back of the woven fabric obtained in the previous step are fixed in a linear or planar shape along the warp running direction while leaving some non-fixed portions. A process for producing a string having a loop, which comprises a step (B) of performing and a step (C) of chopping the woven fabric in the weft running direction through the preceding step.