JPH04194042A - Rainbow-colored yarn for georgette process - Google Patents

Abstract

PURPOSE:To obtain the title rainbow-colored yarn having excellent gloss and resistance in finishing by slitting a laminate in which a resin primer layer, zinc sulfide thin film layer and transparent topcoat layer are successively provided on one side of a transparent polyester film and a specific resin coat layer is provided on another side. CONSTITUTION:The objective rainbow-colored yarn obtained by slitting a laminate in the width of 0.15-2mm, in which a resin primer layer, zinc sulfide thin film layer and transparent resin top coat layer are successively provided on one side of a transparent polyester film and a transparent resin coat layer consisting of 60-30 pts.wt. melamine resin (preferably having 500-300 molecular weight), 30-10 pts.wt. urea-modified epoxy resin (preferably having 800-4000 molecular weight), 40-20 pts.wt. thermosetting acryl resin and 5-15 pts.wt. polyisocyanate is provided on another side of the polyester film.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an iris thread for georgette processing.

[Prior Art/Problems to be Solved by the Invention] Iris threads have been known which are obtained by slitting an iris-colored laminate made of a polyester film or the like provided with a thin film layer of an iris compound such as zinc sulfide. - However, such conventional iris threads are not sufficient in terms of practical properties as iris threads (resistance to processing such as bleaching, dyeing, scouring, washing resistance, etc.).
In particular, when processing under harsh conditions such as georgette processing, the surface of the polyester film is attacked by caustic soda and becomes cloudy, resulting in deterioration of the iris color and gloss, making it almost unusable. there were.

In view of the above-mentioned points, it is an object of the present invention to provide an iris thread that is rich in iris colors, has excellent luster, and has excellent practical properties that can withstand georgette processing.

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

(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 topcoat layer on one side of the transparent polyester film. The present invention relates to an iris thread for georgette processing, which is obtained by slitting a laminate in which layers are provided in this order and a transparent resin coating layer similar to that described above is provided on the opposite side of the transparent polyester film.

(3) The present invention further provides 2 of the laminate obtained in the above (2).
The present invention relates to an iris thread for georgette processing, which is obtained by slitting a laminate in which two sheets are pasted together with the transparent resin coating layer on the outside through an adhesive layer.

(4) The present invention further provides, on one side of the polyester film, a transparent resin undercoat layer similar to (2) above, a first zinc sulfide thin film layer, a transparent resin intermediate layer, a second zinc sulfide thin film layer, and a transparent Two sheets of a laminate having a resin topcoat layer provided thereon and a transparent resin coating layer similar to that in (1) above on the opposite side of the polyester film are placed on the transparent resin layer via an adhesive layer. This invention relates to an iris thread for georgette processing, which is made by slitting a laminate that is pasted together with the coating layer on the outside.

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

The iris thread for georgette processing of the present invention is produced by providing a transparent resin coating layer having a specific composition on the surface of a transparent polyester film opposite to the coating surface of the zinc sulfide thin film layer. Even when treated with a strong alkali, there is no deterioration in texture, etc., and it prevents a decrease in transparency, iris color, and gloss due to cloudiness of the polyester film.

The transparent resin coating layer in the present invention is made of melamine resin 6.
0 to 30 parts of polyester film, 30 to IO parts of urea-modified epoxy resin, 40 to 20 parts of thermosetting acrylic resin, and 5 to 15 parts of polyisocyanate are dissolved in a solvent and coated on one side of a polyester film.

If the ratio of the resin is out of the range, cracks and peeling of the resin layer will occur, and the ability to protect the polyester film will deteriorate, which is undesirable.

The melamine resin constituting the transparent resin coating layer preferably has a molecular weight of about 500 to 3,000, and the urea-modified epoxy resin is preferably a copolymer of urea resin and epoxy resin, and has a molecular weight of about 300' to 4,000. preferable.

The thermosetting acrylic resin is, for example, an acrylic resin that condenses with epoxy resin, urea resin, melamine resin, etc. by heating, or a self-crosslinking acrylic resin.
A polyisocyanate that cures at 150 to 170°C is preferable, and the polyisocyanate is tolylene diisocyanate (TD l
) and hexamethylene diisocyanate (HMD) alone or in mixtures are preferred.

The solvent for dissolving the resin is not particularly limited as long as it dissolves the resin; for example, toluene, methyl ethyl ketone, butyl acetate, and isopropyl alcohol, alone or in mixtures, are generally used. Especially 60 to 30 parts of toluene and 40 to 40 parts of methyl ethyl ketone.
A solvent mixture consisting of 20 parts, 30 to 10 parts of butyl acetate and 5 to 10 parts of isopropyl alcohol is preferred.

The transparent resin coating layer is formed by dissolving each of the resins in the mixed solvent and applying the solution onto one side of the polyester film using a conventional coating method such as a gravure coach ink method or a spray coating method. , 150-17
It is obtained by curing the resin at the same time as drying at 0°C for 15 to 40 seconds. The amount of the resin solution applied is adjusted so that the thickness of the coating layer after drying is 0.2 to 3.0 μm. If the thickness of the coating layer exceeds the above range, the resulting iris thread will become rigid as a whole, resulting in poor weavability and texture. Moreover, if it is less than the above range, the georgette processability will be poor.

Although polyethylene terephthalate is the most common polyester film used in the present invention, 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 also used. Polyesters (including polycarbonates) may also be used.

The polyester film needs to be transparent, and among the embodiments of the present invention, two sheets of the laminate are pasted together with the transparent resin topcoat layer on the outside. In some cases, it does not necessarily have to be transparent.

The thickness of the polyester is usually in the range of 4 to 100 μm,
More preferably, the thickness 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 thread obtained as is, thereby determining the weavability and texture, so it is appropriately selected and used in consideration of these factors.

Additives such as antistatic agents, ultraviolet absorbers, antioxidants, and colorants may be added to the polyester film as necessary.

The thickness of the transparent resin undercoat layer in the present invention is usually 0.01
It is a uniform one selected from the range of ~5μm, more preferably 0.02~3μm.

If the thickness of the transparent resin undercoat layer is less than the above range, the effect will be significantly inferior, and if it exceeds the above range, the entire layer will become stiff and lack weavability and texture, which is not preferable.

As the resin for forming the transparent 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, 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, epoxy resin, alkyd resin, amino alkyd resin , rosin-modified maleic acid resin and the like are preferably used alone or in combination. Curable resins are particularly preferred.

The transparent resin undercoat layer is formed by applying an organic solvent solution, aqueous solution, etc. of the resin to a uniform thickness by a conventional coating method such as a gravure coating method or a spray coating method, and then drying it (thermosetting resin , curing in the case of electron beam curable resins, ultraviolet ray curable resins, etc.).

The zinc sulfide thin film layer in the present invention is usually 10 to 1100n.
It is provided with a uniform or non-uniform thickness within the range of 20 to 30 nm, more preferably within the range of 20 to 30 nm.

If the thickness of the thin film layer is less than the above range, the iris gloss cannot be changed. On the other hand, if it exceeds the above range, the iris luster will deteriorate, which is not preferable. When making the thickness of the thin film layer non-uniform, the degree of non-uniformity of the thickness of the thin film layer [difference between thick and thin parts of the thin film layer (hereinafter referred to as non-uniformity)] is 20 to 30n.
It is preferable to set it to about m. If the degree of non-uniformity is less than the above range, the color development will be monotonous and the iris color will be changed to a rich color.
On the other hand, if it exceeds the above range, the strength of the iris color decreases, cracks tend to occur, and the resistance to georgette processing decreases, which is not feminine. The period of non-uniform thickness (referring to the distance between adjacent 0-thick parts or the distance between adjacent thin parts) corresponds to the density of the iris pattern, and is usually (preferably about 0.5 to 20 cm). The period is not limited to this range.The period may be constant or not constant.The iris pattern is usually (striped), but it is not limited to this.゜The formation of the zinc sulfide thin film layer can be carried out by using the evaporation source material using a resistance heating method, a high frequency induction heating method (SIi electron beam heating method, etc.), or a normal evaporation method thin film forming method. As the evaporation source material for forming the layer, press-formed zinc sulfide powder with a purity of 30% or more (by weight, the same applies hereinafter) can be used (it can be used as appropriate, but zinc sulfide powder with a purity of 90% or more must be pressed). Molded ones are more preferably used.

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

In the iris thread of the present invention, a second zinc sulfide 88 layer may be further provided on the zinc sulfide thin film layer and the transparent resin topcoat layer via a transparent resin intermediate layer (hereinafter, a second zinc sulfide 88 layer). When a 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 from the range of 0.02 to 3 μm. If the thickness of the transparent resin intermediate layer is less than the above range, the color development will be weak and the color will be monotonous, which is not preferable. On the other hand, if it exceeds the above range, it becomes stiff as a whole and lacks weavability and texture, which is not preferable. Although the thickness may be uniform or non-uniform, it is preferable to make the thickness non-uniform because it gives a richer iris color. If the thickness is non-uniform, 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, the color development will be monotonous and it will be difficult to change the rich iris color, while if it exceeds the above range, the color development will also be pale, which is not preferable. 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.

Note that the non-uniform period may or may not be constant. The non-uniform pattern is usually a striped pattern, but is not limited to this.

When providing the transparent resin intermediate layer, various resins such as thermoplastic resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins can be used to form the intermediate layer. 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 resins, melamine resins, urea-melamine resins, epoxy resins, alkyd resins, aminoalkyd resins, rosin-modified maleic acid resins, and the like are preferably used alone or in mixtures.

The transparent resin intermediate layer is formed by applying an organic solvent solution or an aqueous solution of the resin using a conventional coating method such as a gravure coating method or a spray coating method, and then drying it (thermosetting resin, electron beam curable resin, etc.). In the case of resins, ultraviolet curable resins, etc., this is done by curing).

When the second zinc sulfide thin film layer is provided, the zinc sulfide thin film layer has a thickness of 10 to 1100 nm, similar to the first zinc sulfide thin film layer. The thickness of the second zinc sulfide thin film layer may be non-uniform or uniform. In the case of non-uniformity, the thickness, degree of non-uniformity, period of non-uniformity, etc.
It does not necessarily have to be the same as in the case of the zinc sulfide thin film layer.

The transparent resin overcoat layer has a uniform thickness on the zinc sulfide thin film layer when there is one zinc sulfide thin film layer, and on the second zinc sulfide thin film layer when there are two zinc sulfide thin film layers. It will be set up. The transparent resin top coat layer can be made of the same material, coating method, and thickness as the transparent resin intermediate layer.

The transparent resin top coat layer, transparent resin intermediate layer, and transparent resin undercoat layer may be colored with dyes and/or pigments as long as transparency is not impaired, or they may be colored with dyes and/or pigments as necessary. Antioxidants, antistatic agents, ultraviolet absorbers, etc. may 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 with the transparent resin topcoat layer on the outside and the adhesive layer sandwiched between them. It is also possible to have a 2-bly configuration. In this case, two identical laminates may be used, or two laminates with different thicknesses, non-uniformities, etc. may be used. By adopting such a configuration, it is possible to further enhance the resistance to georgette processing as well as to scouring treatment.

The adhesive used for the adhesive layer is urethane resin type,
Adhesives such as epoxy resin, polyester resin, acrylic resin, and synthetic rubber are used as appropriate.

The iris thread of the present invention is prepared by using the laminate or the laminate having a 2-brie structure with an appropriate width, for example, 0.15 to 2
It can be obtained by slitting it to a width of mm.

The obtained iris thread can be used as a flat thread as it is, or it can be twisted with other fibers and used as a twisted iris thread. In particular, in the case of a one-ply structure, it is best to use rayon, silk, cotton, Tetoron, nylon thread, etc., and twist it in hagoromo, round twist, or taski twist so that the transparent resin coating layer is on the outside and use it as the iris thread. preferable.

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

Next, the present invention will be explained with reference to Examples.

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

Example 1 100 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, and 5 parts of toluene were added to one side of a transparent polyethylene terephthalate (hereinafter referred to as PET) film with a thickness of 12 μm.
A transparent resin solution consisting of 0 parts, 30 parts of xylene, and 20 parts of n-butyl alcohol was coated with a gravure coater, dried, and cured at 160°C for 20 seconds to form a transparent resin solution with a uniform thickness of 0.2 μm. A zinc sulfide thin film layer with an uneven thickness (average thickness 40 nm, Maximum thickness 30
++m, minimum thickness 20 nm, thickness non-uniformity 40 nm,
A transparent resin coating consisting of 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was added. was coated with a gravure coater, dried, and cured at 160° C. for 20 seconds to form a transparent resin topcoat layer having a uniform thickness of 02 μm. Furthermore, on the opposite side of the PET film, 50 parts of melamine resin, 15 parts of urea-modified epoxy resin, 30 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 20 parts of methyl ethyl ketone, 20 parts of butyl acetate, and isopropyl A transparent coating solution consisting of 10 parts of alcohol was applied using a gravure coater, and dried and cured at 160°C for 20 seconds to a thickness of 0.
．． A laminate was obtained by providing a 2 μm transparent resin coating layer. This was microslit into 120 pieces (0°252 aun width) to obtain iris threads.

Example 2 A transparent resin undercoat layer with a uniform thickness similar to that of Example Y was provided on one side of a transparent PET film with a thickness of 12 μm, and on top of that a transparent resin undercoat layer with a uniform thickness of 50 parts m was provided. A zinc sulfide thin film layer was formed. On top of that, a transparent resin coating consisting of 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, 30 parts of xylene, and 20 parts of n-butyl alcohol was applied with a gravure coater and dried at 160°C
Cured for 0 seconds to form a transparent resin intermediate layer with non-uniform thickness (average thickness 0.4 μm, maximum thickness 1.0 μm).
m, minimum thickness 0.2 μm 1 thickness non-uniformity 0.8 μl
, non-uniform period 2011111, parallel striped pattern), a second zinc sulfide thin film layer having a uniform thickness of 50 parts m is formed thereon, and a thickness A transparent resin overcoat layer having a uniform thickness of 0.2 μm was formed. Furthermore, 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 with a width of 0.252 mm.

Example 3 Example 1 was applied to one side of a 12 μm thick transparent PET film.
A transparent resin undercoat layer with a uniform thickness similar to the above, and a zinc sulfide thin film layer with an uneven thickness were sequentially applied, and on top of that, 50 parts of thermosetting acrylic resin, 5 parts of polyisocyanate, 50 parts of toluene, and 30 parts of xylene were applied. parts, n-butyl alcohol 20
A transparent resin solution consisting of 300 ml of resin was applied using a gravure coater and cured at 160° C. for 20 seconds 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 parts m is further formed on the intermediate layer, and a transparent resin top coat having a uniform thickness is applied thereon in the same manner as in Example 1. A layer was formed, and the same transparent resin coating layer as in Example 1 was provided on the opposite side of the PET film to obtain a laminate.

The obtained laminate was microslit in the same manner as in Example 1 to obtain an iris thread having a width of 0.252+nll1.

Example 4 Two sheets of the laminate selected in Example 2 were bonded together via a 2μ thick urethane resin adhesive layer so that the transparent resin coating layer was on the outside to form a 2-ply structure. It was made into a thing. After that, micro slits were made in the same manner as in Example 1.
．． I got an iris thread with a width of 252+n+n.

Example 5 Two sheets of the laminate selected in Example 3 were bonded together via a 2 μm thick urethane resin adhesive layer so that the transparent resin coating layer was on the outside to form a 2-ply structure. It was made into a thing. After that, micro slits were made in the same manner as in Example 1.
．． We obtained an iris thread with a width of 252 ma.

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

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

Comparative Example 3 In Example 2, a transparent resin coating layer on the transparent PET film base layer was not applied.An example was prepared in which two laminates were prepared exactly the same as in Example 2, with the PET film outside. In the same manner as in Example 4, two pieces were pasted together to form a 2-ply structure, which was microslit in the same manner as in Example 4 to obtain iris threads.

Examples 1 to 5 were prepared by using the iris yarns obtained in Examples 1 to 5 and Comparative Examples 1 to 3 and using 100 denier rayon yarn as the core yarn.
In Comparative Examples 1 to 3, the transparent resin coating layer was placed on the outside, and in Comparative Examples 1 to 3, the PET film base material was placed on the outside, and round twisted yarn was used as a test sample.

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

◎・・・・・・The iris is rich in color and has strong luster.

○...Iris colors are rich.

Δ: The iris color is monotonous.

×...The iris color is pale.

In addition, in order to confirm suitability for georgette processing, each test sample was subjected to weight loss processing under the conditions specified in ``Gi'', and changes in the iris layer were visually observed and evaluated according to the criteria specified in ``ggi''.

Weight loss processing conditions (loss rate 18.8%) Treatment liquid, sodium hydroxide 40g 1 water IL treatment temperature: 9
5°C Treatment time = 60 minutes Evaluation criteria A: No change in iris color observed.

B: The iris color was reduced by half because the polyester film became cloudy.

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

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

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

Claims (1)

[Claims] 1. A transparent resin undercoat layer, a zinc sulfide thin film layer, and a transparent resin topcoat layer are provided in this order on one side of a transparent polyester film, and on the opposite side of the transparent polyester film, It is made by slitting a laminate provided with a transparent resin coating layer consisting of 60 to 30 parts of melamine resin, 30 to 10 parts of urea-modified epoxy resin, 40 to 20 parts of thermosetting acrylic resin, and 5 to 15 parts of polyisocyanate. Iris thread for georgette processing. 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 topcoat layer are provided in this order on one side of a transparent polyester film, On the opposite side of the transparent polyester film,
60-30 parts of melamine resin, 3 parts of urea-modified epoxy resin
An iris thread for georgette processing, which is obtained by slitting a laminate provided with a transparent resin coating layer consisting of 0 to 10 parts of thermosetting acrylic resin, 40 to 20 parts of thermosetting acrylic resin, and 5 to 15 parts of polyisocyanate. 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 topcoat layer are provided in this order on one side of the transparent polyester film, On the opposite side of the transparent polyester film,
60-30 parts of melamine resin, 3 parts of urea-modified epoxy resin
Two laminates each having a transparent resin coating layer consisting of 0 to 10 parts of polyisocyanate, 40 to 20 parts of thermosetting acrylic resin, and 5 to 15 parts of polyisocyanate are coated with the transparent resin coating through an adhesive layer. Iris thread for georgette processing, made by slitting a laminated body with the membrane layer on the outside. 4. 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 topcoat layer are provided in this order on one side of the polyester film,
On the opposite side of the polyester film, 60 to 30 parts of melamine resin, 30 to 10 parts of urea-modified epoxy resin,
Two laminates each having a transparent resin coating layer made of 40 to 20 parts of a thermosetting acrylic resin and 5 to 15 parts of a polyisocyanate are placed together with the transparent resin topcoat layer on the outside through an adhesive layer. Iris thread for georgette processing is made by slitting a laminate that is pasted together to form a shape.