JPH04105933A - Brilliant yarn - Google Patents

Abstract

PURPOSE:To obtain brilliant yarn raduced in elongation and enhanced in strength by providing a vapor deposition layer on a base material composed of a specific biaxially stretched polyethylene terephthalate film wherein the ratio of the draw ratios in the lateral and longitudinal directions thereof is specified. CONSTITUTION:When a biaxially stretched polyethylene terephthalate film wherein the ratio of the draw ratios in the lateral and longitudinal directions thereof is 1.5-2.5 is used as a base material, brilliant yarn having high breaking strength and reduced in elongation is obtained. When the longitudinal and lateral draw ratios are prescribed as mentioned above, a film wherein the tensile strength in the longitudinal direction thereof is 28-38kg/mm<2> and that in the lateral direction thereof is 20-24kg/mm<2> and the elongation in the lateral direction thereof is 30-95% and that in the longitudinal direction thereof is 100-120% is obtained. As the material of a vapor deposition layer, a metal such as aluminum, zinc, copper, silver, gold, platinum, chromium, nickel, antimony or bismuth, an alloy thereof, a mixture thereof, oxide or sulfide thereof and silicon dioxide are used and the brilliant yarn shows various metal glosses and other various glosses according to the kind of the material used in the vapor deposition layer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to glitter yarn. More specifically, it relates to a glittering yarn with high breaking strength and low elongation.

[Prior art/issues to be solved by the invention] Glittering threads obtained by slitting a laminate of plastic film with a vapor-deposited layer of metal, metal oxide, etc. have been well known as gold and silver threads. It is widely used in fields such as woven and knitted fabrics.

Conventionally, polyethylene terephthalate films with approximately equal stretching ratios in the transverse and longitudinal directions have been used as these substrates.

However, such conventional glitter yarns have a high elongation rate under tension, and are stretched during weaving and knitting, resulting in poor weaving and knitting properties.
In extreme cases, there are drawbacks such as whitening of the vapor deposited layer,
In addition, the strength is poor, resulting in thread breakage during weaving and knitting.

Using a thicker film as a base material to solve these drawbacks is not preferable in terms of texture as a thread and weaving/knitting properties.

In view of the above points, it is an object of the present invention to provide a glittering yarn with low elongation and high strength.

[Means for Solving the Problems] The present invention provides a glitter yarn having a vapor deposited layer on a base material, wherein the base material has a stretching ratio in the longitudinal direction to a stretching ratio in the transverse direction of 1.3 to 2.5. The present invention relates to a glitter yarn characterized in that it is a biaxially stretched polyethylene terephthalate film.

[Operations and Examples] By using a biaxially stretched polyethylene terephthalate film in which the ratio of the stretching ratio in the machine direction to the stretching ratio in the horizontal direction is 1.3 to 25 times as the base material of the glittering yarn, large breaking strength is achieved. It can be used as a glittering yarn with low elongation.

The double-stretched polyethylene terephthalate film used as the base material in the present invention has a stretching ratio in the machine direction of 13 to 25 times the stretching ratio in the horizontal direction, preferably 25 to 85 times the stretching ratio in the horizontal direction. The stretching ratio in the machine direction is 13 to 2.5 times the stretching ratio in the horizontal direction. By specifying the longitudinal and lateral stretching ratios in this way, the tensile strength in the longitudinal direction is 28 to 38 kg/mm2.
, the tensile strength in the transverse direction is 20-24kg/mm2, the elongation in the longitudinal direction is 30-95%, and the elongation in the transverse direction is 100-1
20% of film can be changed.

The thickness of the polyethylene terephthalate film is usually about 4 to 100/Jm, more preferably about 4 to 50 μm, taking into consideration the texture and weaving/knitting properties of the glitter yarn, and the properties of the woven or knitted material used. Appropriate selection is used from the range.

The polyethylene terephthalate film may contain a stabilizer, an antistatic agent, etc. as necessary, and may be colored so as to maintain its transparency or to become opaque.

In the glittering yarn of the present invention, the structure of the conventional glittering yarn can be used without particular limitation, except that the above-mentioned specific polyethylene terephthalate film is used as the base material.

For example, the vapor deposited layer may be a single layer, or a plurality of layers may be laminated. Moreover, the vapor deposition layer may be provided on one side of the base material, or may be provided on both sides. Furthermore, a transparent or opaque resin undercoat layer may be provided between the base material and the deposited layer, or on top of the topmost deposited layer for protection of the deposited layer, or limited to a color specific to the deposited layer. A transparent resin overcoat layer may be provided to obtain various glittering colors.

The glittering yarn of the present invention can exhibit metallic luster or other various luster depending on the type of material used for the vapor deposited layer. Furthermore, by using one or more vapor-deposited layers of iris-colored substances as the vapor-deposited layer, or by combining this with a resin layer and utilizing the interference effect, it is possible to obtain various iris colors.

In this specification, the term "glitter" is a concept that includes all of the above-mentioned various sparkles and iris colors.

The material of the vapor deposited layer in the glitter yarn of the present invention can be bleached,
There are no particular restrictions as long as the material is not affected by gloss during post-processing such as coloring and scouring, and does not lose its shine for a long period of time, but for example, aluminum, zinc,
Single metals such as copper, silver, gold, platinum, chromium, nickel, antimony, and bismuth, alloys or mixtures of two or more thereof, oxides or sulfides thereof, and oxides of silicon are used. Depending on the material of the vapor deposited layer, various lusters including metallic luster can be obtained. Particularly preferred examples include aluminum, silver, copper, and zinc sulfide.

The thickness of the deposited layer is in the range of 5-200 nm, more preferably 10-+00 nm. If the thickness of the vapor deposited layer is less than the above range, the glitter property will be poor, while if it exceeds the above range, the glitter property will not increase and on the contrary, it will be more likely to cause tarnish.

The thickness of the vapor deposited layer in the present invention is a value measured using a crystal resonator thickness monitor.

The vapor deposition layer may be provided on the substrate by a conventional vacuum vapor deposition method, sputtering method, ion blasting method, etc. using a corresponding evaporation source material.

Although it is usually sufficient to provide one vapor deposited layer, if necessary, a plurality of vapor deposited layers may be directly laminated or may be laminated with a transparent resin layer interposed therebetween.

In the glittering yarn of the present invention, the adhesion between the vapor deposition layer and the polyethylene terephthalate film is improved, and washing and
In order to improve fastness to bleaching, dyeing, scouring, etc., a transparent or opaque resin undercoat layer may be provided between the vapor deposited layer and the polyethylene terephthalate film, if necessary.

The thickness of the resin undercoat layer is usually in the range of 0.01 to 5 μm,
More preferably, it is selected from the range of 002 to 3 am.

If the thickness is less than the above range, the resistance to washing, bleaching, dyeing and scouring will be poor, while if it exceeds the above range, the glitter yarn will become stiff as a whole and will lack weavability and texture.

As the resin for forming the resin undercoat layer, various resins such as thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used, such as acrylic resins and styrene resins. A single resin or a mixture of vinyl chloride resin, vinyl acetate resin, urethane resin, melamine resin, epoxy resin, alkyd resin, etc. can be used. Curable resins are particularly preferred.

The resin undercoat layer is formed by applying an organic solvent solution, aqueous solution, or the like of the resin to a uniform thickness by a conventional coating method, and drying (curing the curable resin).

In the glitter yarn of the present invention, in order to protect the vapor deposited layer from physical and chemical effects during processing or use of the glitter yarn, a transparent resin overcoat layer is usually provided on the vapor deposit layer. will be established.

The thickness of the transparent resin top coat layer is usually selected from the range of 0.01 to 511 m, more preferably from the range of 0.02 to 3 m. If the thickness is less than the above range, the protective effect will be lacking, while if it exceeds the above range, the glittering thread will become rigid as a whole, resulting in poor weavability and texture, which is undesirable in either case.

As the resin for forming the transparent resin topcoat layer, the same resin as that used for the resin undercoat layer can be used, and the resin can be applied in the same manner.

The resin overcoat layer may be colored with pigments or dyes as appropriate, as long as it does not impair its transparency.

For the laminate in which a vapor deposited layer and, if necessary, a resin undercoat layer and an overcoat layer are provided on the polyethylene terephthalate film as the base material, the two sheets can be placed with the No. 4 base on the inside, or with the base material on the outside. It is also possible to make a two-ply structure by laminating them together. A normal adhesive may be used for bonding. If two sheets are bonded together with the base material on the outside, it will withstand processing under severe conditions such as georgette processing.

The glittering yarn of the present invention can be obtained by slitting the above-mentioned laminate into a suitable width, for example, a width of 0.15 to 2 mm.

The glittering yarn of the present invention may be used as a flat yarn as it is,
Alternatively, other fibers such as rayon, silk, cotton, Tetoron, and nylon may be twisted, round-twisted, or taski-twisted, and used as twisted gold and silver threads.

The glittering yarn of the present invention has high breaking strength, so there is little yarn breakage, and it has low elongation, so whitening and difficulty in weaving due to yarn elongation can be eliminated during weaving and knitting. Furthermore, since it has the above-mentioned characteristics, the glittering yarn of the present invention is particularly suitable for warp yarns, and is also convenient to use as flat yarns.

This will be explained below by giving examples.

Example 1 A polyethylene terephthalate film with a thickness of 12 μm was used as a base material (stretching ratio of 3 times in the longitudinal direction at a temperature of 120 °C,
At a temperature of 180°C, the stretching ratio in the transverse direction was 3 times, and then 20
Longitudinal tensile strength 33 kg/mm obtained by stretching at a temperature of 0 °C with a longitudinal draw ratio of 1.5 times
”, a film with a tensile strength in the transverse direction of 22 kg/mm2, an elongation in the longitudinal direction of 60%, and an elongation in the transverse direction of 110%) was coated with 100 parts of thermosetting acrylic resin (parts by weight, hereinafter the same), polyisocyanate-1. 5 parts, 50 parts of toluene,
A transparent resin coating consisting of 30 parts of xylene and 20 parts of n-butyl alcohol was applied with a gravure coater and dried.
] A transparent resin undercoat layer having a uniform thickness of 0.2 μm was formed by curing under the conditions of 0° C. x 20 seconds, and a layer of metal aluminum was applied to a thickness of 50 parts m using aluminum as an evaporation source. was deposited on. Furthermore, thermosetting acrylic resin 5
A transparent resin coating consisting of 0 parts of polyisocyanate, 5 parts of l-luene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied with a gravure coater and dried at 160°C.
It was cured under the conditions of x20 seconds to form a transparent resin overcoat layer having a uniform thickness of 0.2 parts m.

Cut the resulting laminate vertically into 80 pieces (0,879mm width)
A glittering yarn was obtained by micro-slitting.

Furthermore, when the glittering yarn was twisted into round twisted yarn using 100 denier rayon yarn as the core yarn, a round twisted yarn rich in glittering properties was obtained.

Example 2 A polyethylene terephthalate film with a thickness of 12 parts m was used as a base (at a temperature of 120° C., a stretching ratio of 3 times in the machine direction, 1
At a temperature of 80°C, the stretching ratio in the transverse direction is 3 times, and then at 200°C.
Using a film with a longitudinal tensile strength of 36 kg/mTr12, a transverse tensile strength of 22 kg/mm'', an elongation in the longitudinal direction of 50%, and an elongation in the transverse direction of 110%, obtained by stretching twice in the longitudinal direction at a temperature of A laminate was obtained in exactly the same manner as in Example 1.

The laminate was micro-slit into 80 pieces (width: 0,879 mm) in the longitudinal direction to obtain glitter yarn.

Furthermore, when this glittering yarn was twisted into round twisted yarn using 100 denier rayon yarn as the core yarn, a round twisted yarn rich in glittering properties was obtained.

Example 3 A polyethylene terephthalate film with a thickness of 12 μm was used as a base (at a temperature of 120° C., a stretching ratio of 4 times in the longitudinal direction, 2
At a temperature of 00°C, the stretching ratio in the transverse direction is 3 times, the tensile strength in the longitudinal direction is 30 kg/mm2, and the tensile strength in the transverse direction is 22 kg/mm2.
A laminate was obtained in exactly the same manner as in Example], using a laminate with a longitudinal elongation of 80% and a transverse elongation of 110%.

The laminate was micro-slit into 80 pieces (width 0.379 mm) in the longitudinal direction to obtain glittering yarn.

Furthermore, this glittering yarn was twisted into round twisted yarn using 100 denier rayon yarn as the core yarn.] As a result, a round twisted yarn rich in glittering properties was obtained.

Comparative Example 1 A polyethylene terephthalate film with a thickness of 12 parts m was used as a base material (stretching ratio in the machine direction: 3 times, stretching ratio in the horizontal direction: 3 times).
A transparent resin undercoat layer, A vapor deposition layer and a transparent resin topcoat layer were sequentially provided, and the resulting laminate was cut 80 times in the vertical direction (0,379+nm
A glittering thread was obtained by making micro-slits in the width (width).

Furthermore, when this glitter yarn was twisted into a round twisted yarn using a 100 denier rayon yarn as a core yarn, the round twisted yarn, which had poor glitter due to its low strength and high elongation, was replaced.

The breaking strength and breaking elongation of the bright yarns obtained from Examples 1 to 3 and Comparative Example were evaluated using AUTOGRAPII A manufactured by Shimadzu Corporation.
C3-10OA (1, OAD CELL 5 kg
f). The results are shown in Table 1.

The breaking strength and breaking elongation in Table 1 are each 17
This is the average value for each sample.

[Margins below] 1. From Table 1, it can be seen that the glittering yarn of the present invention has high breaking strength and low breaking elongation.

[Effects of the Invention] The glittering yarn of the present invention has high breaking strength and low elongation, and is suitably used for woven and knitted fabrics.

Claims (1)

[Claims] In the glitter yarn having a vapor deposited layer on a base material, the base material has a ratio of a longitudinal stretch ratio to a transverse stretch ratio of 1.
A glittering yarn characterized in that it is a biaxially stretched polyethylene terephthalate film having a thickness of 3 to 2.5 times.