JPS61235530A - Base material for sheet with metallic tone - Google Patents

Abstract

PURPOSE:To obtain a base material for a sheet having a lustrous surface with a nondirectional metallic tone and giving very fine reflected light by using matted Al foil contg. specified amounts of Fe and Si in a specified ratio. CONSTITUTION:This base material for a sheet with a metallic tone is made of matted Al foil contg. 0.5-1.0wt.% Fe and <=0.2wt.% Si in 10-16 ratio of Fe/Si, and streaks on the base material in the rolling direction are not conspicuous at any angle of seeing. The base material is obtd. by rolling two sheets of Al foil having said composition put one on top of the other to a prescribed thickness. The matted rear sides have no streaks, the grains are hyperfine, and a fine metallic tone is shown at any angle seeing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a base material for a metallic-like sheet, and more particularly to a base material for a metallic-like sheet that imparts a metallic glossy surface.

[Conventional technology]

In recent years, metallic sheets have a metallic luster, so it goes without saying that they are used for reflective purposes. It is commonly used for various advertising and decoration purposes such as stars and calendars.

Conventionally, as substrates for such metallic sheets, 1) metal vapor-deposited film or paper, 2) glossy aluminum, 2) matte aluminum, 2) metal paste coated paper or kneaded film, etc. have been used.

[Problem that the invention seeks to solve]

However, such conventional base materials have the following problems: (1) In the case of (1) and (2) above, the reflective surface looks dark depending on the viewing angle because the specular reflection wheel is high; (ir) In the case of (1) above, the reflective surface appears dark Although the ratio is high, the stripes in the rolling direction give rise to directional properties in the reflection properties, so the reflective surface looks dark depending on the viewing angle, similar to (+). In addition to the drawbacks of low decorative and visual effects, they were still not fully satisfactory.

Therefore, the inventors of the present invention have solved these conventional drawbacks, and provided a sheet that provides a non-directional metallic-like glossy surface with no noticeable streaks in the rolling direction when viewed from any angle, and exhibits extremely beautiful reflected light. As a result of various studies, it was discovered that extremely excellent results could be obtained by using matte aluminum foil containing specific amounts of iron and silicon, and the present invention was completed.

[Means for solving problems]

That is, the present invention contains 0.5 to 1.0% by weight of iron and 0% of silicon.
．． 2% by weight or less, and the iron/silicon content ratio is 1
This is a base material for a metallic sheet made of matte aluminum foil of 0 to 16.

The metallic base material of the present invention is produced by uniformly mixing aluminum, iron, and silicon using a conventional method, and then forming the mixture into a foil by polymerization rolling.

In this case, the iron content is required to be 0.5 to 1.0% by weight, the silicon content is required to be 0.2% by weight or less, and
The content ratio of both, that is, the weight ratio of iron/silicon is 10~
It is necessary to fall within the range of 16. If the content of both is outside these conditions, the reflective surface will appear dark depending on the viewing angle, and a bright metallic glossy surface will not be obtained as a whole, making it impossible to achieve the objective.

In addition, aluminum foil is generally produced by rolling, but when rolling the foil to a thickness of 15 μm or less, it is very difficult to roll one foil, so two foils are rolled (polymerization rolling). In this case, the aluminum foil has a glossy surface and a matte back surface, that is,
The surface in contact with the rolling rolls becomes a mirror surface, but the surfaces where the aluminum is rolled in contact with each other become a matte surface. At that time, the matte surface normally obtained by this rolling has very thin streaks (brane streaks) parallel to the rolling direction due to the influence of the rolling texture, and no change in appearance is observed even after annealing. Therefore, it is not suitable as a metallic sheet.

However, even when the base material of the present invention is manufactured by the polymerization rolling method, there is no adverse effect and an excellent matte surface with fine crystal grains and no streaks and non-directionality can be obtained.
No special equipment is required for its manufacture.

Therefore, the commonly used polymerization rolling method is the simplest method for producing the base material of the present invention.

When the base material of the present invention is used as a beautiful, innovative metallic sheet, it is effective to cover the surface of the base material with a transparent resin film or clear film to protect the surface.
This is advantageous in increasing weather resistance.

Any transparent resin film may be used as long as it has excellent transparency, but for example? Riester,
Stretched? Examples include ligropyrene, carbonate, and acetate films, and transparent and general-purpose paper or film adhesives can be used as adhesives for coating.For example, ? What about vinyl acetate, vinyl chloride-vinyl acetate copolymer, etc.? Rivinyl yarn; hot melt type; urethane type; polyester type; engineering? Examples include oxy-based adhesives.

Further, examples of the clear include urethane, polyester, Nyxy, acrylic homopolymers or copolymers; vinyl chloride-vinyl acetate copolymer clears, and the like. The clear thickness is preferably 5 to so pm, and the optimum thickness is around 30 μm.

When using the base material of the present invention as a beautiful, innovative metallic sheet, it is of course more effective to print with transparency without using white pigments, etc. It is also possible to stack reinforcing members such as synthetic resin films, paper, plywood, and metal plates.

[Effect]

Accordingly, by using the base material of the present invention, it is possible to obtain a metallic-like sheet that exhibits an extremely beautiful, non-directional, metallic-like, innovative reflected light when viewed from any angle.
? It is particularly effective for advertising and decoration such as stars and calendars.

〔Example〕

The present invention will be further explained below with reference to Examples and Comparative Examples.

Example 1 Chemical composition (Fe/81 = 11.43)pe
O,80 (wt%) slO,07 Tl O,02 Seven others 0.02) L 99.09 Total 100.00 Using an aluminum foil base (350 prn) with the above chemical composition, 210 μm foil (1 time) was rolled. , Qsu), 1
20μm? ? 3 (2 times, Qs), 6011m foil (3 times, 9s), 28 prn foil (4 times/Qs), and finally polymerized and rolled 15μm foil (5 times, 9s,). A base material of the present invention was obtained.

The matte surface of this product had no streaks and crystals were fine and had a beautiful metallic appearance when viewed from any angle.

Example 2 Chemical composition (Fs/Sl = 15.67) Fe
0.94 (wt%) s+ 0.06 Tt 0.02 AtQ 8.98 Total 100.00 Using an aluminum foil base (350 μm) with the above chemical composition, a 15 μm foil base material of the present invention was prepared in the same manner as in Example 1. I got it.

The matte surface of this product had no streaks, the crystals were extremely fine, and it exhibited a beautiful metallic-like matte surface from any angle.

Comparative Example 1 Chemical composition (Fe/5l=9) F・0.90 (wt%) ss 0.10 Tl O,02 At98.98 Total 100.00 Conducted using aluminum foil base (350μQ1) with the above chemical composition A 15 μm foil was obtained in the same manner as in Example 1.

The reflective surface of the matte surface looked different depending on the viewing angle.

Comparative Example 2 Chemical composition (Fe/81 = 17) F・0.85 (wt%) SiO,0.5 T+ 0.02 At99.08 Total 100.00 Aluminum foil base with the above chemical acid content (350 mm) using
A 15 μm foil was obtained in the same manner as in Example 1.

The matte surface of this object had different reflective surfaces depending on the viewing angle.

Comparative Example 3 Chemical composition (F・/s+=11) F・1.10 (wt%) st 0.10 TiO,02 )t 98.78 Total 100.00 Aluminum foil base with the above chemical acid content (350 μm) A 15 prn foil was obtained in the same manner as in Example 1.

The reflective surface of this object's matte surface looked different depending on the viewing angle.

Comparative example 4 Chemical composition (Fe/St = 11.25) Fe
0.45 (wt%) St 0.04 Tl 0.02 Seven others 0.51 Person t 98.98 Total 100.00 Using an aluminum foil base (350 μm) with the above chemical composition, the same procedure as in Example 1 was carried out. A 15 μm foil was obtained.

The reflective surface of this object's matte surface looked different depending on the viewing angle.

Comparative Example 5 Chemical composition (Fe/Si"=3.08) 1? 0.40 (wt%) 81 0.13 T10.02 p, 1 99.45 Total 100.00 Aluminum foil base with the above chemical composition (350μIll+ )
A 15 μm foil was obtained in the same manner as in Example 1.

The reflective surface of this object's matte surface looked different depending on the viewing angle.

Comparative Example 6 Chemical composition (Fe /St = 4.09) Fe
0.45 (wt%) slo, 11 Tt 0.02 Others 0.07 At 99.35 Total 100.00 Using an aluminum foil base (350 μm) with the above chemical composition, a 15 μm foil was obtained in the same manner as in Example 1. Ta.

The reflective surface of this object's matte surface looked different depending on the viewing angle.

[Brief explanation of drawings]

FIG. 1 is a microscopic photograph of the metallographic structure of the foil base material obtained in Example 1, FIG. 2 is a microscopic photograph of the metallic structure of the foil obtained in Comparative Example 1,
3 to 7 are enlarged cross-sectional explanatory views of examples of metallic sheets using the base material of the present invention. that's all

Claims (1)

[Claims] A base material for a metallic sheet comprising a matte aluminum foil containing 0.5 to 1.0% by weight of iron and 0.2% by weight or less of silicon and having an iron/silicon content ratio of 10 to 16.