JPH01104847A - Needle thread for embroidering - Google Patents

Abstract

PURPOSE: To obtain a bobbin thread enabling elegant embroidery without declining in work capacity by furnishing loops on a filament yarn surface afforded by subjecting two or more kinds of synthetic multifilament yarns to fluid jet interlacing treatment under the condition of overfeed difference. CONSTITUTION: This bobbin thread capable of imparting embroidered portions with soft and elegant feel is obtained by furnishing loops, using 30-60 wt.% of fibers each 0.5-1.5 denier in fineness, on a filament yarn surface afforded by subjecting two or more kinds of synthetic multifilament yarns to fluid jet interlacing treatment under the condition of overfeed difference. The bobbin thread thus obtained is either a twistless or low-twist one with <=30 turns/m, having a total fineness of 80-120 denier and tensile tenacity of >=3.5 g/d.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a bobbin thread for sewing machine stitching.

(Prior Art) Viscose rayon filament thread or twisted thread of silk thread is often used as needle thread for embroidery using a sewing machine because of its excellent luster.

On the other hand, spun yarns have conventionally been used as bobbin threads for embroidery, such as 100% cotton 8α count twin yarns and polyester spun yarns 60 count double yarns.

The problem with such spun yarn is that there is a limit to its thickness (count), and it is not possible to use an unlimited number of thin yarns.Therefore, the length of yarn wound onto one bobbin becomes short, and work efficiency cannot be improved. was there.

Furthermore, in the spinning system, since the yarn is twisted, it swells in a circular shape and has a three-dimensional effect, which also has the disadvantage of making the part to be embroidered stiff.

On the other hand, when synthetic fibers such as polyester filament yarn are used instead of spun yarn, it is possible to use reciprocating yarns, so the yarn length becomes longer, which solves one of the problems, but on the other hand, However, there was a problem in that the friction with the needle thread increased, and the needle thread for stitching often broke. In particular, when the filament yarn is twisted, the thread breakage due to the friction is significantly increased, and on the other hand, when the filament yarn is not twisted, the thread does not have enough cohesiveness during the operation of the embroidery sewing machine. As a result, there was a problem that the bobbin thread would hang up, become fluffy, and eventually break.

(Object of the Invention) The object of the present invention is to improve the conventional drawbacks and to propose a bobbin thread for sewing machines that does not reduce the working capacity of the sewing machine and enables elegant stitching. It's about doing.

(Structure of the Invention) The present invention uses a fluid entanglement treatment system having loops on the yarn surface and surface obtained by subjecting two or more types of synthetic fiber multifilament yarns to a fluid entanglement treatment by giving an overfeed difference, The fluid entanglement processing system is constructed to have the characteristics described below.

As the synthetic IHIlt, known fibers such as polyester and polyamide can be used, and the most suitable example is one using polyester fiber.

The fluid entanglement treatment system using the synthetic fibers is given sufficient convergence by the entanglement treatment, and almost no twisting is necessary. However, even if twisting is present, the degree of unwinding and twisting , 30 times/m or less can be used.

Furthermore, the fluid entanglement processing system can synthesize two or more types! Total denier 80-120 using Ji-tai filament yarn
(dB), one of which requires the use of fine denier fibers with a single m fiber denier in the range of 0.5 to 1.5 de. Furthermore, the fine denier fibers have 15
-40% overfeed, while the synthetic fibers used in combination with the fine denier are thick denier fibers with a monofilament denier in the range of 1.0 to 3.0, and the entangling treatment In this case, an overfeed of 0 to 10% is given and the fine denier fibers are fed and processed simultaneously to the same fluid entanglement zone. In this way, by increasing the overfeed rate and increasing the overfeed rate of fine denier fibers to 15 to 40%, loops made of the fine denier fibers are mainly formed on the surface of the yarn. Ru.

Furthermore, the tensile strength of the fluid entanglement treatment system is 3.5 g/de.
However, in view of the density of the loops formed on the yarn surface, the proportion of the fine denier fiber used is:
The content is preferably in the range of 30 to 60%. The size of the loop formed on the yarn surface is related to the tensile strength of the fluid entanglement treatment system, and is also related to workability during sewing machine operation (mainly, thread unwinding performance). In order for the tensile strength to be 3.5'J/de or more, the proportion of fine denier fibers used must be within the above range.

Furthermore, the size of the loop formed on the yarn surface is also related to the denier of the fine denier fiber, and the denier of the single fiber is
o, sde, the size of the loop becomes too large, causing the same problem as above, and the single mN denier is 1.
If it exceeds 5 dlll, I? ! This is not preferable because it causes a lot of friction.

On the other hand, the thick denier single fiber denier is in the range of 1.0 to 3.0! al has a total denier of 50 to 80 (d
e) A multifilament yarn having r and a tensile strength of -5,59/de or more is preferably used.

(Action of the invention) The bobbin thread for sewing machine stitching thus obtained has loops of fine denier fibers covering the thread surface;
It acts like the fluff of spun yarn, and does not damage the upper thread even if it rubs against the upper thread.Furthermore, the lower thread itself has been given a cohesive property by the interlacing process, so it does not cause hangnails. Or, it does not generate fluff. Furthermore, it can be used as well as when spun yarn is used as the bobbin thread (there is no cutting of the thread),
Since it is not twisted, the embroidered part is softer and has an excellent texture compared to when spun yarn is used.

<Example) 6% overfeed was added to polyester multifilament yarn (70de/48de) with a tensile strength of 6.9 g/de to produce a polyester multifilament with a tensile strength of 4.8 g/de as fine denier fiber. Yarn (30 de/24 ril) K-25% NOOHAR feed was applied, and both were simultaneously introduced into a Taslan nozzle and subjected to fluid entanglement treatment under a compressed air pressure of 5.5 Kg/CIA.

The resulting fluid entangled system has a total denier of 107
de, and the tensile strength was 3.9 g/de.

The yarn surface was covered with fine denier fiber loops, and the usage rate of the fine denier fibers was 33.6%. Silicone oil was applied to the fluid entanglement treatment system in an amount of 2% based on the weight of the thread to produce a sewing thread.

Patent Applicant Teijin Share Ceremony Certification

Claims (1)

[Claims] A fluid entangling system having loops on the yarn surface obtained by subjecting two or more types of synthetic fiber multifilament yarns to fluid entangling treatment with an overfeed difference, the fluid entangling system having a total denier. 80-1
20 (de) and is substantially untwisted or 30
It has a soft twist of 3.5 g/m or less, and a tensile strength of 3.5 g/m.
use of fine denier fibers having a fiber diameter of 0.5 de or more and a single yarn denier of the loop-forming fibers in the range of 0.5 to 1.5 de; A bobbin thread for sewing machine stitching, characterized in that the proportion is in the range of 30 to 60% by weight.