JPH07103503B2 - Bias tape manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a flat braid-like bias tape produced by a cording machine.

[0002]

2. Description of the Related Art As shown in FIG. 5, a bias tape A is constructed by a plurality of raw material yarns 15 running obliquely with respect to the longitudinal direction, these yarns intersecting each other and being inverted at their edges. Since the threads are diagonally crossed, it has great elasticity and is used for edging sewn products, and fits well on curved edges.

When it is used for edging, the tape body is folded in two and the edge of the sewn product is put in the tape body, and it is sandwiched, but since it is relatively thick, it has a large resistance elasticity against bending and is difficult to fold. In particular, there is a problem that it takes a lot of time to sew when it is difficult to fold it in a narrow width.

It is also possible to fold it in two and heat press it in advance, but there is a problem in that the original bulge and stretchability of the assembly are diminished, and the three-dimensional appearance and texture of the product are lost.

[0005]

[Problem of the invention is therefore an object of the present invention is to provide a method for producing a bias tape to facilitate folio.

[0006]

In order to solve the above problems, in the present invention, when the bias tape is assembled,
In the central part of the longitudinal direction of the
The guide core material was inserted .

[0007]

Since the core yarn or the guide core material is incorporated in the central portion of the bias tape, the structure points where the raw yarns intersect are pushed laterally to leave only the crossover yarns, and the open stitch lines are automatically formed.

[0008]

BRIEF DESCRIPTION OF THE PREFERRED embodiment of the present invention in FIGS.

As shown in FIGS. 1 and 2 , the bias tape A is assembled by a cording machine B having a bobbin driving portion on the lower surface of the fixed disk 1, and the core yarn 2 can be initially pulled out at the central portion. in advance it is incorporated, after down machine by pulling out the core yarn 2 (FIG. 1 refer to the arrow) to remove Ru vertical streak watermark th muscle 3 is provided in this portion.

A drive unit composed of a rack and a pinion is provided on the lower surface of the fixed disk 1, and the standing bobbin 4 arranged on the upper surface of the fixed disk 1 is rotated in a meandering manner in an S shape (Fig. A chain-shaped guide groove 5 is provided to allow (see the arrow 2). In this chain-shaped guide groove 5, there is a discontinuous portion 6 for reversing the bobbin to form both side ears of the tape, and an S-shaped groove 7 which is continuous and forms an odd-numbered chain shape is provided. A yarn path 8 for supplying the core yarn 2 from below is vertically fixed to the central portion of the character groove 7a.

The raw material yarn 9 fed from each bobbin 4 is
The bias tape A gathers in the upper center part and is assembled by the meandering motion of the bobbin, and the completed bias tape A is wound up by the winding roller 10. At this time, the core yarn 2 is always incorporated in the central portion of the tape because the position of the core yarn 2 is not changed.

In a chain-shaped guide groove lacing machine in which an even number of S-shaped grooves 7 are arranged, a guide core yarn path is attached to one of the S-shaped grooves at the center.

As the core yarn 2, a yarn thicker than the raw yarn 9 is used, and a yarn having a smooth surface and difficult to stretch is used in order to reduce pull-out resistance. The finished tape had a relatively thick core yarn 2 in the center, and the intersecting texture points of the raw material yarns were pushed laterally. When the core yarn 2 was pulled out, this empty space was left behind. Is the watermark line. If you apply hot air to the original tape with core yarn and leave it for the required time,
The braided tissue is fixed and the morphology of the open stitches is stable.

The core yarn 2 is preferably colored differently from the raw yarn 9. It is also possible to use a melted yarn as the core yarn and then melt and remove the melted yarn to form the open stitch.

Next, as shown in FIG. 3, the chain-shaped guide groove 5 is formed.
A guide core material 11 such as Tegus having a smooth surface and flexibility is attached to the tip of the upright column 12 in the central S-shaped groove 7a. The guide core 11 has a length of 30 to 50 cm, and the tip portion is incorporated into the tape main body by a required length, and the guide core 11 is sequentially pulled out from the tape main body as the tape advances. The dropout portion of the guide core material becomes the required openwork streak 3.

When hot air is blown from the heater 13 attached to the portion where the guide core material 11 is incorporated, the assembled structure is fixed and the form of the open stitch 3 is stabilized.

The bias tape has various structures such as one set in which thin threads are interlaced as shown in the figure, two sets, three sets, etc., and a hexagonal pattern. It can also be applied to ornamental items such as Karagumi patterns.

As shown in FIG. 4, when the bias tape is used for edging the sewn product C, it is folded in two with the creases 3 as creases, and the end edge of the sewn product is sandwiched therein. Sew at the perforations 14.

[0019]

According to the present invention, since the core yarn or the guide core material is inserted in the center of the bias tape as described above ,
During assembly of the astape, the organizational points float sideways and the core
Only the crossover thread is used as the thread or guide core material
Easy to fold in half, with open stitch lines.
Can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a bias tape manufactured according to the present invention.

FIG. 2 is a schematic view showing a state in which a bias tape is assembled in a lacing machine.

FIG. 3 is an explanatory view showing a state of assembling in a lacing machine of another example.

FIG. 4 is a perspective view showing a state used for edging.

FIG. 5 is a plan view of a conventional bias tape.

[Explanation of symbols]

 A Bias tape B String making machine C Sewing product 1 Fixed disk 2 Core thread 3 Openwork streak 4 Bobbin 5 Guide groove 6 Discontinuous part 7, 7a S-shaped groove 8 Thread path 9 Raw material thread 10 Winding roller 11 Guide core material 12 Strut 13 Heater 14 Perforation 15 Raw thread

Claims (1)

[Claims] 1. A raw material yarn is fed from a plurality of bobbins,
Collecting this raw material yarn in the central part, the meandering motion of the bobbin
Therefore, in the method of assembling the bias tape,
A core thicker than the raw material thread in the longitudinal center of the astape
Continuously feed the thread or insert a guide core of a specified length
The feature is that the texture points where the raw yarns intersect are floated sideways.
Bias tape manufacturing method.