JP2983618B2 - Iris thread for georgette processing - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an iris thread for georgette processing.

[Problems to be Solved by the Related Art] Conventionally, an iris thread obtained by slitting an iris laminate obtained by providing an iris compound thin film layer such as zinc sulfide on a polyester film or the like has been known.

However, such conventional iris yarns are not sufficient in practical characteristics as iris yarns (resistance to processing such as bleaching, dyeing, scouring, or washing resistance).
Especially under severe conditions such as georgette processing, the surface of the polyester film is attacked by caustic soda and becomes turbid, resulting in poor iris color and gloss, making it almost unusable. there were.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an iris thread having an iris color rich in color, excellent in gloss, and excellent in practical properties that can withstand georgette processing.

[Means for Solving the Problems] (1) In the present invention, a transparent resin undercoat layer, a zinc sulfide thin film layer and a transparent resin overcoat layer are provided in this order on one surface of a transparent polyester film, On the opposite side of the polyester film substrate, melamine resin 60-30 parts (parts by weight,
The same applies hereinafter), urea-modified epoxy resin 30 to 10 parts, thermosetting acrylic resin 40 to 20 parts and polyisocyanate 5 to
The present invention relates to an iris thread for georgette processing obtained by slitting a laminate provided with a transparent resin coating layer composed of 15 parts.

(2) The present invention also provides a transparent resin undercoat layer, a first zinc sulfide thin film layer, a transparent resin intermediate layer, a second zinc sulfide thin film layer, and a transparent resin overcoat on one side of a transparent polyester film. The present invention relates to an iris thread for georgette processing, which is formed by slitting a laminate in which layers are provided in this order and a transparent resin coating layer similar to the above is provided on the opposite surface of the transparent polyester film.

(3) The present invention further relates to the laminate (2) obtained in the above (2).
The present invention relates to an iris thread for georgette processing, which is obtained by slitting a laminated body obtained by laminating a plurality of sheets via an adhesive layer such that the transparent resin coating layer is on the outside.

(4) The present invention further provides a transparent resin undercoat layer, a first zinc sulfide thin film layer, a transparent resin intermediate layer, a second zinc sulfide thin film layer, and a transparent resin undercoat layer similar to the above (2) on one surface of a polyester film. A two-layer laminate having a transparent resin coating layer provided on the opposite surface of the polyester film and the same transparent resin coating layer as in the above (1) is provided on the transparent resin via an adhesive layer. The present invention relates to an iris thread for georgette processing, which is obtained by slitting a laminate bonded so that a coating layer is on the outside.

[Operation and Examples] The iris thread for georgette processing of the present invention is an iris thread particularly suitable for georgette processing, which does not reduce its iris color and luster even under the harsh conditions of georgette processing.

The iris thread for georgette processing of the present invention is obtained by providing a transparent resin film layer having a specific composition on a surface of a transparent polyester film opposite to a surface on which a zinc sulfide thin film layer is applied, thereby obtaining a caustic soda. Even if the georgette treatment with a strong alkali is used, the texture and the like are not deteriorated, and the transparency, iris color and gloss of the polyester film are prevented from lowering due to cloudiness.

The transparent resin coating layer in the present invention is a melamine resin
60-30 parts, urea-modified epoxy resin 30-10 parts, thermosetting acrylic resin 40-20 parts and polyisocyanate 5-15
A part is dissolved in a solvent and applied on one side of a polyester film. When the proportion of the resin is out of the range, cracks occur and the resin layer peels off, which undesirably lowers the function of protecting the polyester film.

The melamine resin constituting the transparent resin coating layer preferably has a molecular weight of about 500 to 3000, and the urea-modified epoxy resin is preferably a copolymer of an urea resin and an epoxy resin, and more preferably has a molecular weight of about 800 to 4000. .

The thermosetting acrylic resin is, for example, an epoxy resin,
Acrylic resin that condenses with urea resin, melamine resin, etc. by heating or self-crosslinking acrylic resin
Those which can be cured at 150 to 170 ° C. are preferable, and the polyisocyanate is preferably a single or a mixture such as tolylene diisocyanate (TDI) and hexamethylene diisocyanate (HMD).

The solvent for dissolving the resin is not particularly limited as long as it dissolves the resin, for example, toluene,
Alone or a mixture such as methyl ethyl ketone, butyl acetate and isopropyl alcohol are commonly used.
Especially 60 to 30 parts of toluene, 40 to 20 of methyl ethyl ketone
A solvent mixture consisting of 3-10 parts of butyl acetate and 5-10 parts of isopropyl alcohol is preferred.

The transparent resin coating layer, each resin is dissolved in the mixed solvent, the solution is applied on one side of the polyester fill using a normal coating method such as gravure coating method, spray coating method, 150-170
It is obtained by curing the resin at the same time as drying at 15 ° C for 15 to 40 seconds. The coating amount of the resin solution is adjusted so that the thickness of the coating layer after drying is 0.2 to 3.0 μm. When the thickness of the coating film layer exceeds the above range, the obtained iris yarn becomes rigid as a whole and has poor weavability and texture. If it is less than the above range, the georgette workability will be poor.

Polyethylene terephthalate is most commonly used as the polyester film used in the present invention. However, other polyhydric alcohol components such as diethylene glycol, propylene glycol and bisphenol A, and polybasic acid components such as isophthalic acid, phthalic acid, and carbonic acid are used. Polyesters (including polycarbonates) may be used.

Although it is necessary that the polyester film is transparent, of the aspects of the present invention, the two aspects of the laminate are bonded via an adhesive layer such that the transparent resin overcoat layer is on the outside. In this case, it is not always necessary to be transparent.

The thickness of the polyester is usually in the range of 4 to 100 μm,
More preferably, it is appropriately selected from the range of 6 to 50 μm. The mechanical properties of the transparent polyester film affect the mechanical properties of the iris yarn obtained as it is, and determine the weaving properties and the texture.

If necessary, additives such as an antistatic agent, an ultraviolet absorber, an antioxidant, and a coloring agent can be added to the polyester film.

The thickness of the transparent resin undercoat layer in the present invention is usually 0.01 to
It is a uniform material selected from the range of 5 μm, more preferably from 0.02 to 3 μm. When the thickness of the transparent resin undercoat layer is less than the above range, the effect is remarkably inferior, and when the thickness exceeds the above range, the whole becomes rigid and lacks in weaving property and texture, which is not preferable.

As the resin for forming the transparent resin undercoat layer, any of a variety of resins such as a thermoplastic resin, a thermosetting resin, an electron beam curable resin, and an ultraviolet curable resin can be used. Styrene resin, acrylic-styrene copolymer, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, nitrocellulose, cellulose acetate, urethane resin, urea resin, melamine A resin, a urea-melamine resin, an epoxy resin, an alkyd resin, an aminoalkyd resin, a rosin-modified maleic resin, or a mixture thereof is preferably used. Particularly, a curable resin is preferable.

The transparent resin undercoat layer is formed by, for example, a gravure coating method using an organic solvent solution of the resin or an aqueous solution,
The coating is performed by applying a coating having a uniform thickness by a usual coating method such as a spray coating method, and drying (hardening in the case of a thermosetting resin, an electron beam curable resin, an ultraviolet curable resin, and the like).

The zinc sulfide thin film layer in the present invention is usually provided with a uniform or non-uniform thickness in the range of 10 to 100 nm, more preferably in the range of 20 to 80 nm. If the thickness of the thin film layer is less than the above range, iris luster cannot be obtained. On the other hand, exceeding the above range is not preferable because the iris gloss is rather poor. When making the thickness of the thin film layer non-uniform, the degree of non-uniformity of the thickness of the thin film layer (the difference between the thick and thin parts of the thin film layer (hereinafter referred to as non-uniformity)) should be about 20 to 80 nm. Is preferred. When the degree of non-uniformity is less than the above range, it is difficult to obtain a monochromatic and rich iris color, whereas when the degree of non-uniformity exceeds the above range, the intensity of the iris color is reduced, cracks are easily formed, and resistance to georgette processing is also reduced. Is not preferred. The non-uniform thickness cycle (meaning the distance between adjacent thick portions or the distance between adjacent thin portions) corresponds to the density of the iris pattern and is usually preferably about 0.5 to 20 cm, but is limited to this range. Not something. The period may be constant or not constant. The iris pattern is usually striped,
It is not limited to this.

The formation of the zinc sulfide thin film layer may be performed by a thin film forming method of an ordinary evaporation method such as a resistance heating method, a high-frequency induction heating method, or an electron beam heating method.

As the evaporation source material for forming the zinc sulfide thin film layer, any material can be used as appropriate, as long as the powder has a purity of zinc sulfide of 80% or more (wt%, the same applies hereinafter) or more.
A pressed product of the above zinc sulfide powder is more preferably used.

The thickness of the zinc sulfide thin film layer is a value measured by a quartz oscillator thickness monitor.

In the iris yarn of the present invention, a second zinc sulfide thin film layer may be further provided on the zinc sulfide thin film layer and between the transparent resin overcoat layer and a transparent resin intermediate layer (hereinafter, referred to as a “second zinc sulfide thin film layer”).
When a second zinc sulfide thin film layer is provided, the zinc sulfide thin film layer is referred to as a first zinc sulfide thin film layer).

The thickness of the transparent resin intermediate layer is usually selected from the range of 0.01 to 5 μm, more preferably 0.02 to 3 μm.
If the thickness of the transparent resin intermediate layer is less than the above range, the color development is weak and the color becomes monotonous, which is not preferable. On the other hand, if it exceeds the above range, it becomes undesirably rigid as a whole and lacks in weaving properties and texture. The thickness may be uniform or non-uniform, but it is preferable to make the thickness non-uniform, because a rich iris color can be obtained. In the case of non-uniformity, the non-uniformity of the thickness is preferably about 0.1 to 1 μm. If the degree of non-uniformity is less than the above range, it is difficult to obtain a monochromatic and rich iris color, whereas if it exceeds the above range, the color development is also undesirably pale. The period of non-uniform thickness (hereinafter referred to as non-uniform period) corresponds to the density of the iris pattern, and is usually preferably about 0.5 to 20 cm, but is not limited to this range. The non-uniform period may be constant or may not be constant. The non-uniform pattern is usually a stripe pattern, but is not limited thereto.

When the transparent resin intermediate layer is provided, as a resin for forming the same, any of various resins such as a thermoplastic resin, a thermosetting resin, an electron beam curable resin, and an ultraviolet curable resin can be used. For example, acrylic resin, styrene resin, acrylic-styrene copolymer, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, polycarbonate, nitrocellulose, cellulose acetate, urethane resin,
Urea resin, melamine resin, urea-melamine resin,
An epoxy resin, an alkyd resin, an amino alkyd resin, a rosin-modified maleic resin, or a mixture thereof is preferably used.

The transparent resin intermediate layer is formed by, for example, a gravure coating method using an organic solvent solution or an aqueous solution of the resin,
Apply by a normal coating method such as spray coating method, and dry (thermosetting resin, electron beam curing resin,
In the case of an ultraviolet curable resin or the like, curing is performed.

When the second zinc sulfide thin film layer is provided, the zinc sulfide thin film layer having a thickness of 10 to 100 nm is used similarly to the first zinc sulfide thin film layer. The thickness of the second zinc sulfide thin film layer may be non-uniform or uniform. The thickness, non-uniformity, non-uniform period, and the like in the case of non-uniformity are similar to those in the case of the first zinc sulfide thin film layer, but need not necessarily be the same.

The transparent resin overcoat layer has a uniform thickness on the zinc sulfide thin film layer when the zinc sulfide thin film layer is one, and on the second zinc sulfide thin film layer when the zinc sulfide thin film layer is two. Is provided. The material, application method and thickness according to the transparent resin intermediate layer can be applied to the transparent resin overcoat layer.

The transparent resin overcoat layer, the transparent resin intermediate layer and the transparent resin undercoat layer may be appropriately colored with a dye and / or a pigment as long as the transparency is not impaired. An inhibitor, an antistatic agent, an ultraviolet absorber and the like can also be added.

In the present invention, two of the laminates obtained as described above are laminated with the transparent resin coating layer on the outside or the transparent resin overcoat layer on the outside with the adhesive layer interposed therebetween. And a two-ply configuration. In this case, two identical laminates may be used, or two laminates having different thicknesses and unevenness may be used. By adopting such a configuration, not only the scouring process but also the georgette processing resistance can be further enhanced.

As the adhesive used for the adhesive layer, an adhesive such as a urethane resin, an epoxy resin, a polyester resin, an acrylic resin, and a synthetic rubber is appropriately used.

The iris thread of the present invention comprises the laminate or the laminate
An appropriate width of the ply configuration, for example, 0.15 to 2 mm
It is obtained by slitting to the width of

The obtained iris yarn is used as it is as a plain yarn, or as a twisted yarn with another fiber or the like, and used as a twisted iris yarn.
Especially in the case of a one-ply structure, rayon, silk, cotton, tetron, nylon yarn, etc., and a twisted iris yarn by twisting a coat, round twisting, and task twisting so that the transparent resin coating layer is on the outside. preferable.

The iris thread of the present invention is particularly suitable for georgette treatment because it can withstand the harsh conditions as described above.

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

The thickness of the zinc sulfide thin film layer in the examples was measured by a quartz crystal resonator film thickness monitor.

Example 1 A transparent polyethylene terephthalate (hereinafter, referred to as PET) film having a thickness of 12 μm was coated on one side with 100 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene,
A transparent resin solution consisting of 30 parts of xylene and 20 parts of n-butyl alcohol was applied and dried with a gravure coater at 160 ° C. × 2
Cured under 0 seconds to form a transparent resin undercoat layer with a uniform thickness of 0.2μm, and then press-formed a pellet formed by pressing 90% pure zinc sulfide powder as a vaporization source by resistance heating. And zinc sulfide thin film layer with non-uniform thickness (average thickness 40nm, maximum thickness 60nm, minimum thickness 20nm, thickness non-uniformity 40nm, non-uniform period 20mm, parallel stripe pattern)
Is formed thereon, and 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, n
-A transparent resin coating consisting of 20 parts of butyl alcohol is applied and dried with a gravure coater and cured at 160 ° C for 20 seconds to form a transparent resin overcoat layer with a uniform thickness of 0.2 μm. did. Further on the other side of the PET film melamine resin 50 parts, urea modified epoxy resin 15 parts,
30 parts of thermosetting acrylic resin, 5 parts of polyisocyanate,
Toluene 50 parts, methyl ethyl ketone 20 parts, butyl acetate 20
And a transparent coating solution consisting of 10 parts of isopropyl alcohol and a gravure coater, dried and cured at 160 ° C. for 20 seconds to form a transparent resin coating layer having a thickness of 0.2 μm to obtain a laminate. This was microslit into 120 cuts (0.252 mm width) to obtain iris threads.

Example 2 A transparent resin undercoat layer having the same uniform thickness as in Example 1 was provided on one side of a transparent PET film having a thickness of 12 μm, and zinc sulfide having a uniform thickness of 50 nm was formed thereon. A thin film layer was formed. In addition, 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, n-
A transparent resin coating consisting of 20 parts of butyl alcohol is applied and dried with a gravure coater and cured under the conditions of 160 ° C. × 20 seconds, and a transparent resin intermediate layer having an uneven thickness (average thickness 0.4 μm, A second thickness having a maximum thickness of 1.0 μm, a minimum thickness of 0.2 μm, a thickness non-uniformity of 0.8 μm, a non-uniform period of 20 mm, a parallel stripe pattern, and a further uniform thickness of 50 nm. Was formed thereon, and a transparent resin overcoating layer having a uniform thickness of 0.2 μm was formed thereon in the same manner as in Example 1. Further, a transparent resin coating layer was formed on the opposite surface of the PET film in the same manner as in Example 1 to obtain a laminate. This was microslit in the same manner as in Example 1 to obtain an iris thread having a width of 0.252 mm.

Example 3 A transparent resin undercoat layer having a uniform thickness similar to that of Example 1 and a zinc sulfide thin film layer having a non-uniform thickness were sequentially provided on one side of a transparent PET film having a thickness of 12 μm, followed by thermosetting. Acrylic resin 50 parts, polyisocyanate 5 parts, toluene 50
Parts, xylene 30 parts, n-butyl alcohol 20 parts of a transparent resin solution was applied with a gravure coater, 160 ° C. × 2
The resin was cured under the condition of 0 second to form a transparent resin intermediate layer having a uniform thickness of 0.2 μm. A second zinc sulfide thin film layer having a uniform thickness of 40 nm is further formed on the intermediate layer, and a transparent resin overcoat layer having a uniform thickness is further formed thereon in the same manner as in Example 1. A laminate was obtained by providing the same transparent resin coating layer as in Example 1 on the opposite side of the PET film.

The obtained laminate was microslit in the same manner as in Example 1 to obtain an iris thread having a width of 0.252 mm.

Example 4 Two sheets of the laminate obtained in Example 2 were bonded together via a urethane resin-based adhesive layer having a thickness of 2 μm so that the transparent resin coating layer was on the outside, thereby forming a two-ply structure. It was taken. Then, microslit as in Example 1.
An iris thread with a width of 0.252 mm was obtained.

Example 5 Two sheets of the laminate obtained in Example 3 were adhered via a urethane resin-based adhesive layer having a thickness of 2 μm such that the transparent resin coating layer was on the outside, thereby forming a two-ply structure. It was taken. Then, microslit as in Example 1.
An iris thread with a width of 0.252 mm was obtained.

Comparative Example 1 An iris thread was obtained in exactly the same manner as in Example 1 except that the transparent resin coating layer on the transparent PET film surface was not provided.

Comparative Example 2 An iris thread was obtained in the same manner as in Example 3 except that the transparent resin coating layer on the transparent PET film face was not provided.

Comparative Example 3 Example 2 was repeated except that a transparent resin coating layer was not formed on the transparent PET film substrate in Example 2 except that the PET film was placed outside the laminate. 4
In the same manner as in Example 2, two sheets were laminated to form a two-ply structure, which was micro-slit as in Example 4 to obtain an iris thread.

Using the iris yarns obtained in Examples 1 to 5 and Comparative Examples 1 to 3 and using 100 denier rayon yarn as a core yarn,
In Comparative Examples 1 to 3, a round twisted yarn was twisted so that the transparent resin coating layer was on the outside, and in Comparative Examples 1 to 3, the PET film substrate was on the outside.

The test sample obtained above was visually observed for iris color and evaluated according to the following criteria.

 ◎ ‥‥‥ Rich in iris color, strong color and gloss.

 ○ ‥‥‥ Rich iris color.

 △ ‥‥‥ The iris color is monotonous.

 × ‥‥‥ The iris color is pale.

In addition, in order to confirm the suitability of the georgette processing for each test sample, weight loss processing was performed under the following conditions, and then changes in the iris layer were visually observed and evaluated according to the following criteria.

Weight loss processing conditions (weight loss rate about 18.8%) Treatment liquid: 40 g of sodium hydroxide, 1 L of water Treatment temperature: 95 ° C Treatment time: 60 minutes Evaluation criteria A: No change in iris color.

B ‥‥‥ The iris color was reduced by half due to cloudiness of the polyester film.

C ‥‥‥ The polyester film became cloudy and damaged the iris layer.

The results are shown in Table 1. The sample subjected to the weight reduction treatment was soft and had a good feel.

[Effects of the Invention] The iris thread of the present invention is rich in iris thread color, excellent in gloss, and excellent in resistance to georgette processing.

Claims (4)

(57) [Claims] 1. A transparent resin undercoat layer, a zinc sulfide thin film layer and a transparent resin overcoat layer are provided in this order on one surface of a transparent polyester film, and a melamine resin 60 is provided on the opposite surface of the transparent polyester film. 30 to 30 parts, urea-modified epoxy resin 30 to 10 parts, thermosetting acrylic resin 40 to 20 parts and polyisocyanate 5 to 15 parts of a laminate provided with a transparent resin coating layer formed by slit processing For iris thread. 2. A transparent resin undercoat layer, a first zinc sulfide thin film layer, a transparent resin intermediate layer, a second zinc sulfide thin film layer and a transparent resin overcoat layer on one side of a transparent polyester film. Provided in order, on the opposite surface of the transparent polyester film, a transparent melamine resin 60 to 30 parts, urea modified epoxy resin 30 to 10 parts, a thermosetting acrylic resin 40 to 20 parts and a polyisocyanate 5 to 15 parts transparent An iris thread for georgette processing obtained by slitting a laminate provided with a resin coating layer. 3. A transparent resin undercoat layer, a first zinc sulfide thin film layer, a transparent resin intermediate layer, a second zinc sulfide thin film layer and a transparent resin overcoat layer on one side of a transparent polyester film. Provided in order, on the opposite surface of the transparent polyester film, a transparent melamine resin 60 to 30 parts, urea modified epoxy resin 30 to 10 parts, a thermosetting acrylic resin 40 to 20 parts and a polyisocyanate 5 to 15 parts transparent An iris thread for georgette processing obtained by slitting a laminate obtained by laminating two laminates provided with a resin coating layer so that the transparent resin coating layer is located outside via an adhesive layer. 4. A transparent resin undercoat layer, a first zinc sulfide thin film layer, a transparent resin intermediate layer on one side of a polyester film,
A second zinc sulfide thin film layer and a transparent resin overcoat layer are provided in this order, and on the opposite surface of the polyester film, 60 to 30 parts of a melamine resin, 30 to 10 parts of a urea-modified epoxy resin,
Two sheets of a laminate provided with a transparent resin coating layer composed of 40 to 20 parts of a thermosetting acrylic resin and 5 to 15 parts of a polyisocyanate, the transparent resin overcoat layer is bonded to the outside via an adhesive layer. An iris thread for georgette processing, which is obtained by slitting a laminated body that has been laminated.