JPH03161538A - Flame-retardant decorative film - Google Patents

Abstract

PURPOSE:To provide a decorative fiber having a flame-retardance even when a base film and a metal thin film are a polyester film and an Al film, respective ly, by comprising the micro slit product of a laminated film prepared by adher ing and laminating to twe base films each having a metal thin layer to each other through a flame-retardant adhesive agent layer. CONSTITUTION:The objective decolative fiber comprises the micro-slit product of a laminate film prepared by adhering and laminating two base films (prefer ably polyester films) 1 each provided with a metallic thin layer 2 to each other through a flame-retardant adhesive agent layer 3. A protecting layer 4 is prefer ably formed on at least one surface of the laminated film.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a decorative yarn that has been imparted with slow-burning properties. Conventional Technology Decorative threads, such as gold and silver threads, are typically manufactured by depositing aluminum on a thin polyester film, and then micro-slitting the m-layer film, which is protected by coating the deposited surface with a resin. ．． However, although gold and silver threads are metal, they contain a thin layer of aluminum, which is highly flammable, and are microslit and have a large surface area, so when ignited, they ignite and burn. In other words, it is easily flammable rather than flammable. Flammability may not be such a problem when gold and silver thread is used for kimono or obi, but when gold and silver thread is used for doll hair, for example, consider that the person handling the doll is an infant or child. The fact that it is easily flammable is extremely dangerous. Therefore, several proposals have been made to make gold and silver thread flame retardant. Japanese Utility Model Publication No. 62-43727 states, ``Two metallized laminated films in which at least a metal vaporized R film is closely laminated on one side of a vinyl chloride resin film are placed with the metal vaporized film on the inside through an adhesive film. A film for gold and silver thread is characterized in that it is laminated with other materials, and the adhesive used to form the adhesive film is, for example, a polyester-incyanate adhesive. Japanese Utility Model Publication No. 62-55434 describes ``a gold and silver thread material comprising at least a metal vapor deposited film and a protective resin coating film adhesively laminated in this order on one or both sides of a vinyl chloride resin film. Film.'' is shown. Problems to be solved by the invention
The invention described in Publication No. 55434 attempts to obtain flame-retardant gold and silver thread by utilizing the flame-retardant properties of vinyl chloride resin film. Therefore, the desired flame retardant purpose can be achieved.

However, decorative threads using polyvinyl chloride film as a base film have inferior heat resistance compared to polyester film, so they are prone to deformation during the drying and curing process during resin coating, and are prone to deformation during combustion. It generates a large amount of poisonous gas (especially hydrogen chloride gas), so there are restrictions on its use; when used in woven or knitted fabrics, it may lack chemical resistance or washing resistance; and it may not be suitable for coating or printing. It has problems such as being inferior to polyester film. Therefore, it is desirable to use a polyester film as the base film, which has excellent mechanical properties, chemical resistance, washing resistance, suitability for coating and printing, and does not generate toxic gas when burned. There is a strong need for the development of flame-retardant gold and silver threads. In view of these circumstances, the present invention was made with the object of providing a slow-flaming decorative yarn mainly based on polyester film. Means for Solving the Problems The slow-flaming decorative yarn of the present invention is a laminate in which two base films (l) provided with a thin metal layer (2) are adhesively laminated via a flame-retardant adhesive layer (3). It is characterized by being made of microslit film.

The present invention will be explained in detail below. As the base film (1), a polyester film (that is, a two-wheel stretched polyethylene terephthalate film) is suitably used, the thickness of which is less than about 25 g, usually less than 20 g, especially less than 15 g. It is preferable that it be as thin as possible, such as less than m. Depending on the application, polyolefin film, polycarbonate finolem, senolose acetate film, polyamide film, polystyrene film, polyvinyl chloride film, etc. can also be used. However, if you comprehensively evaluate mechanical properties, heat resistance, chemical resistance, combustion gas issues, cost, etc. when used as a decorative thread, polyester film is the most practical. The metal thin layer (2) formed on the base film (1) may be a vacuum-deposited layer of metal such as aluminum, silver, gold, copper, platinum, nickel, chromium, indium, titanium, zinc, or tin, or a sputtering layer. , ion plating layers, etc., but due to cost constraints, a vacuum-deposited aluminum layer is practically the most important, and in the case of a thin aluminum layer, flame retardance is particularly required. Ru. The thickness of the metal thin layer (2) is desirably about 50 to 2000 Å, particularly about 100 to 10 Å, and preferably <200 to 800 Å. In forming the metal thin layer (2) on the base film (1), the base film (1) is coated with a resin such as epoxy, melamine, or acrylic to a thickness of approximately 5 mm.
It is also possible to improve the adhesion by installing an anchor coating layer, especially about 0.5 to 3 layers. Further, after forming the metal thin layer (2) on the base film (1), from above the metal thin layer (2), a thickness of about 5 mm or less is formed.
In particular, an overcoating layer of about 0.5 to 3 layers may be provided. The flame-retardant adhesive layer (3) can be prepared by: ■ using a flame-retardant resin in the main adhesive element itself, ■ adding a flame retardant to the main adhesive element, or ■ using a flame-retardant resin in the main adhesive element itself. It is formed by using a resin that has Methods ■ or ■ are particularly important. If the thickness of the flame retardant adhesive layer (3) is too thin, the flame retardant effect will be insufficient, while if it is too thick, the texture as a decorative thread will be impaired. m, usually 2 to 5
It is preferable that 0←1, especially 3 to 40-Peng. The adhesive used to form the flame-retardant adhesive layer (3) may be a solution type, a dispersion type, a solvent-free type, or a melt type. A room temperature curing type, a heat curing type, a moisture curing type, an active energy ray curing type can be used, and in some cases, a pressure sensitive type can also be used. As the main adhesive element mentioned above, resins such as polyester, polyurethane, acrylic, epoxy, polyamide, vinyl, polyolefin, and natural resins are used. Flame retardants to be added to the main adhesive components include halogen-containing organic compounds (tetrabromo phthalimide, tetrabromo phthalic anhydride, decabrom diphenyl ether, etc.); tricresyl phosphate, talesyl phenyl phosphate, triphenyl phosphate, diphenyl octyl phosphate, tributyl Phosphate esters such as phosphate; tris(β-chloroethyl) phosphate, tris(dichlorpyl)phosphate, tris(2.3-
Halogen-containing phosphate esters such as dibromprovir) phosphate and tris(promchlorbrovir) phosphate; chlorinated paraffin, chlorinated polyethylene, brominated polyphenyl, chlorinated polyphenyl, perchlorpentanecyclodecane (dechlorane), and decrotene plus , tetrabromoethane, tetrabrocubutane, chlorinated diphenyl, tetrabromobenzene, hexafuromecyclododecane, 1,2,3-tribromopropane, and other halogen compounds; antimony, boron, and aluminum (aluminum hydroxide, etc.) Examples include inorganic compounds such as zirconium compounds (this is just an example). Two or more types of flame retardants can be used together, and generally two or more types are used together.
The flame retardant effect is often better when used in combination. In the case of (1) or (2) above, it is preferable that the blending ratio of the flame retardant to the main adhesive element be as large as possible without impairing the adhesion. For example, when the total amount of the main adhesive element and the flame retardant is 100 parts by weight, 10 to 80 parts by weight of fuel,
In particular, it should be set so that it accounts for 20 to 70 parts by weight. Adhesives also contain crosslinking agents, curing accelerators, plasticizers,
Auxiliary agents such as tackifiers, colorants, ultraviolet absorbers, and antioxidants can be added. In the present invention, two base films (1) provided with a thin metal layer (2) are adhesively laminated via the flame-retardant adhesive layer (3). In this case, the base film (1) provided with a thin metal layer (2)
) so that the non-installed side of the metal thin layer (2) faces the flame-retardant adhesive layer (3), that is, (2)/(1)/(3)/(1)/(2). Alternatively, the base film (1) provided with the metal thin layer (2) may have a flame retardant adhesive layer (3) on the side where the metal thin layer (2) is installed.
) side, that is, (1)/(2)/(3)/(2)/(1). Comparing the former and the latter, the former has an advantage in terms of interlayer adhesion, but there is no base layer between the flammable thin metal layer (2) and the flame-retardant adhesive layer (3). Since the film (1) is present, it is somewhat disadvantageous in terms of flame retardation. Therefore, it is desirable to take measures to increase the degree of flame retardancy, such as selecting a material with a high degree of flame retardancy as the flame retardant adhesive layer (3). On the other hand, in the latter case, since the flammable metal thin layer (2) is adjacent to the flame-retardant adhesive M (3), it is advantageous in terms of imparting flame retardation, but the base film (1) The adhesion at the interface between the metal layer and the thin metal layer (2) is not necessarily perfect, and this is somewhat disadvantageous in terms of adhesion when shear stress is applied. Therefore, it is desirable to take measures to improve adhesion, such as applying an anchor coating on the base film (1) before forming the thin metal layer (2). A laminated film having the former or the latter (particularly the latter) layer structure may have a protective layer (0) formed on at least one side of the laminated film. Examples include coating layers made of resins such as melamine, phenol, alkyd, aminoalkyd, butyral, and cellulose.Protective layer (0 can be a colored layer if necessary, and It is also preferable to use a flame-retardant resin or a resin layer containing a flame retardant.By micro-slitting the laminated film with the above layer structure or the laminated film with the protective layer (4), the desired flame retardation can be achieved. A decorative thread can be obtained.Slit width is 1 to 0.15.
It is often about mm (for example, 64 mm of 1 inch).
1/69th, 1/85th, 92nd, 100
). The slow-flaming decorative yarn of the present invention is particularly suitable for use in doll hair and wigs, and is also used in various other applications, including kimonos, obi, curtains, lace, cloth, ties, ribbons, artificial flowers, malls, bags, and belts. It can be used for various purposes. Function and Effects of the Invention In the decorative thread of the present invention, two base films (1) provided with a thin metal layer (2) are used, and a flame-retardant adhesive layer (3) is interposed between them. So, base film (1)
Even if a polyester film is used as the film and the thin metal layer (2) formed thereon is an easily flammable aluminum layer, the desired flame retardation property can be obtained. EXAMPLES Next, the present invention will be further explained with reference to examples. Example 1 FIG. 1 is a perspective view showing an example of a slow-flaming decorative yarn of the present invention. A vapor-deposited film was prepared by forming a thin metal layer (2) with a thickness of 350A by vacuum vapor deposition of aluminum on one side of a base film (1) made of a polyester film with a thickness of 128L. A saturated polyester containing functional groups as a main adhesive element, a polyisocyanate as a crosslinking agent, an antimony-based flame retardant as a flame retardant, and a ketone-based flame retardant and aluminum hydroxide are applied to the side of this vapor-deposited film on which the metal thin layer (2) is not installed. - Applying an adhesive dissolved or dispersed in an ester-based mixed solvent (mixing ratio of main adhesive element and flame retardant is 1:1 by weight)
．． It was dried to form a flame retardant adhesive layer (3) with a thickness of 16 g. Next, while the tack of the flame retardant adhesive layer (3) still remains, another metal thin layer (2) of the vapor-deposited film is applied.
) The non-installed side was laminated and crimped, and left at room temperature for several days to allow the crosslinking reaction to proceed. As a result, a laminated film having a layer structure of (2)/(1)/(3)/(1)/(2) and a thickness of 401 Lll was obtained, which was slit by l/9 using a micro slitter.
The decorative thread shown in Figure 1 was obtained by slitting it to a width of 2 inches. When I rolled up this decorative thread in my palm and ignited it with a lighter, it started burning, but the flame was weak and the flame extinguished soon after I removed the lighter's flame. When this single decorative thread was suspended and ignited with a lighter at the bottom end, it started burning, but the flame was weak and the flame extinguished shortly after the lighter was removed. Example 2 FIG. 2 is a perspective view showing another example of the slow-flaming decorative yarn of the present invention. In Example 1, a vapor deposited film in which a metal thin layer (2) was provided on one side of a polyester film as a base film (1) via an anchor coating layer was used, and the metal thin layer (2) installation side of the vapor deposited film was used. A flame retardant adhesive layer (3) is formed on the surface of the flame retardant adhesive layer (3).
While the tack still remained, the thin metal layer (2) side of another vapor-deposited film was laminated and pressure-bonded, and the film was left at room temperature for several days to allow the crosslinking reaction to proceed. As a result, a laminated film having a layer structure of (1)/(2)/(3)/(2)/(1) was obtained, which was slit into a width of 1/85 inch using a micro slitter. , the decorative thread shown in Figure 2 was obtained. The flame retardance of this decorative yarn was even better than that of the decorative yarn of Example 1. Example 3 FIG. 3 is a perspective view showing still another example of the slow-flaming decorative yarn of the present invention. Both sides of the laminated film obtained in Example 1 were coated with a melamine resin containing a crosslinking agent, dried and cured to form a protective layer (4) with a thickness of approximately 2 µm. As a result, (4)/(2)/(1)/(3)/(1)/
A laminated film having the layer structure (2)/(4) was obtained, and this was slit into a width of 1/69 inch using a micro slitter to obtain the decorative thread shown in FIG. 3.

The flame retardance of this decorative yarn was almost the same as that of the decorative yarn of Example 1. Note that if a flame retardant is added when forming the protective layer (0), the flame retardant properties will be better. A commercially available 8I layer film for gold and silver thread was prepared by forming a metal thin layer (2) with a diameter of 350A, and then providing a protective layer (0) of melamine resin on top of the metal layer (2). It was slit to a width of 1 inch. When I rolled this slit thread in my palm and ignited it with a lighter, it started burning with a large flame, and it continued to burn even when I moved the lighter flame away. This single slit thread When I hung it up and ignited it with a lighter at the bottom end, it continued to burn even if I moved the lighter's flame away.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the slow-flaming decorative yarn of the present invention. FIG. 2 is a perspective view showing another example of the slow-flaming decorative yarn of the present invention. FIG. 3 is a perspective view showing still another example of the slow-flaming decorative yarn of the present invention. (1)...Base film, (2)...Metal thin layer, (3)...Flame retardant adhesive layer, (0...Protective layer

Claims (1)

[Claims] 1. A slow-flame film made of microslits of a laminated film in which two base films (1) each having a thin metal layer (2) are laminated with a flame-retardant adhesive layer (3) interposed therebetween. Decorative yarn. 2. The slow-flaming decorative yarn according to claim 1, wherein the base film (1) is a polyester film. 3. The slow flame decoration according to claim 1, wherein the side of the base film (1) provided with the thin metal layer (2) on which the thin metal layer (2) is not installed faces the flame retardant adhesive layer (3) side. thread. 4. The slow-flaming decorative yarn according to claim 1, wherein the side of the base film (1) provided with the thin metal layer (2) faces the flame-retardant adhesive layer (3). . 5. A slow-flaming decorative yarn comprising a microslit product of a laminated film with a protective layer (4), which is obtained by forming a protective layer (4) on at least one side of the laminated film according to claim 1.