JP2002346605A - Aluminium material with cross pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aluminium foil with a marketable design while utilizing an original characteristics of an aluminium material. SOLUTION: This aluminium material is characterized in that, this has across pattern on the partial or total surface of the aluminium material, this cross pattern is formed by crossing of linear marks (A) and (B) which respectively comprises plural linear marks running in parallel, and these linear marks are formed by unevenness on the surface of aluminium materials.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an aluminum material having a cloth pattern on the surface. More specifically, the present invention relates to a packaging or decoration aluminum material having a cross design on its surface and having excellent design properties.

[0002]

2. Description of the Related Art On the surface of an aluminum foil produced by rolling, there are surface stripes called roll marks. This is formed by transfer from a rolling roll. Although the surface morphology of the aluminum foil is not irrelevant to rolling conditions such as lubrication conditions, the surface morphology of the rolling roll (roughness of the rolling roll, number of irregularities per unit length perpendicular to the rolling direction, etc.) ).

[0003] The form of these rolling rolls is determined by the polishing conditions of the rolling rolls, and various surface forms such as rough surfaces, glossy surfaces, and hair lines are provided. Polishing of a rolling roll is generally performed by pressing an abrasive such as a grindstone or abrasive paper on a rotating roll perpendicularly to a rotation axis. Therefore, the stripe formed on the roll is formed perpendicular to the axial direction of the roll, and the roll mark of the aluminum foil rolled using the roll is generally formed parallel to the rolling direction.

[0004]

However, the aluminum foil having such a roll mark on its surface has remarkable appearance characteristics even if the surface roughness and the number of irregularities are greatly different. Absent. In particular, in the field of packaging foils or decorative foils that require visual novelty, conventional aluminum foil roll marks are not sufficient in terms of design and the like.

Accordingly, a main object of the present invention is to provide an aluminum foil having design properties in addition to the original characteristics of the aluminum foil.

[0006]

Means for Solving the Problems The present inventor has made intensive studies to solve the problems of the prior art, and as a result, has found that an aluminum foil having a specific form can achieve the above object. It was completed.

That is, the present invention relates to an aluminum material having the following cross pattern.

[0008] 1. A material having a cross pattern on part or all of the surface of an aluminum material, wherein the cross pattern is formed by the intersection of a plurality of parallel linear filaments (A) and a plurality of parallel linear filaments (B). Wherein the linear filaments are formed by irregularities on the surface of the aluminum material.

[0009] 2. Item 2. The aluminum material according to item 1, wherein the aluminum material is an aluminum sheet or an aluminum foil.

[0010] 3. Item 2 wherein the thickness is 500 μm or less.
The aluminum material as described.

4. Item 4. The aluminum material according to item 2 or 3, wherein the aluminum material is a foil or a sheet obtained by using at least one of a rolling roll and an embossing roll, and a cross pattern is given by transfer from the roll surface.

5. Item 5. The aluminum material according to any one of Items 1 to 4, wherein the surface roughness Ra is 0.2 μm or more.

6. Item 6. An aluminum material for packaging according to any one of Items 1 to 5.

7. Item 6. The decorative aluminum material according to any one of Items 1 to 5.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The aluminum material of the present invention is a material having a cross pattern on a part or the whole of the surface of the aluminum material. It is formed by the intersection of a plurality of straight lines (B) parallel to each other, and the straight lines are formed by irregularities on the surface of the aluminum material.

In the aluminum material of the present invention, a plurality of parallel linear lines (A) and a plurality of parallel linear lines (B) are formed on part or all of the surface of the aluminum material. I have. The plurality of linear filaments (A) may be such that each linear filament is substantially parallel. Similarly, the plurality of linear filaments (B) may be such that each linear filament is substantially parallel.

Each linear line is formed by irregularities on the surface of the aluminum material. For example, FIG. 3 shows a schematic view (a perspective view including a cross-sectional view) of a linear filament formed on the surface of an aluminum material. The cross section is composed of an uneven shape. The projection (1) has a ridge-like shape. In the recess (2), a valley between the ridges is formed. These irregularities form a linear filament. The shape, interval, and the like of these concave portions and convex portions may be appropriately selected. That is, in the present invention, the width, uneven shape, depth, and the like of the linear filament are not limited, and may be appropriately set according to the desired design, the use of the aluminum material, and the like. As shown below, it is preferable from the viewpoint of industrial production that each linear filament is formed by transfer of a roll surface form (irregularity) using, for example, a rolling roll or an embossing roll. Unevenness may be provided by another method as long as a predetermined linear filament can be formed. Also, irregularities may be provided by forming linear grooves on the surface of the aluminum material.

In the aluminum material of the present invention, a cross pattern is formed by the intersection of the plurality of linear filaments (group of filaments) (A) and the plurality of linear filaments (group of filaments) (B). . The crossing angle, the crossing position, and the like may be appropriately changed depending on the desired design, the use of the aluminum material, and the like.

The cloth pattern may be formed on at least one of the front surface and the back surface of the aluminum material. Therefore, a cross pattern can be formed on both surfaces of the aluminum material.

The surface roughness (center line average surface roughness: Ra) of the aluminum material having a cross pattern of the present invention may be appropriately set according to the desired design properties, the thickness of the aluminum material to be used, and the like. May be about 0.2 μm or more, preferably 0.3 μm or more. When the aluminum material is aluminum foil, it is desirable to set as follows. That is, the thickness of the aluminum foil is about 1
It is preferable that Ra ≧ 0.6 μm when the thickness is less than 2 μm, and Ra ≧ 0.8 μm when the thickness of the aluminum foil is about 12 μm or more. By setting the surface roughness within the above range, while maintaining the original properties of aluminum foil,
More excellent design characteristics can be exhibited.

The material and form of the aluminum material of the present invention may be the same as known aluminum materials. As the material, pure aluminum-based material having a purity of about 99.0% or more, Mn alone or containing Mn and Mg 3
XXX system, 5XXX system containing Mg, 8XXX system containing Fe alone or Fe and Si, etc. are exemplified. The form is not particularly limited as long as the cloth pattern of the present invention can be imparted. For example, any of an aluminum sheet, an aluminum foil, and a massive aluminum can be used. When used as an aluminum sheet or aluminum foil, the thickness may be generally about 500 μm or less, preferably 5 to 500 μm.

[0022]

The aluminum material of the present invention has a specific cross-pattern, so that it is different from the conventional aluminum material (especially aluminum foil or aluminum sheet) while utilizing the inherent characteristics of the aluminum material. It has a nice appearance. In particular, since a cross pattern is formed by the intersection of one linear line group and the other linear line group, both linear line groups are slightly moved by the light source side or the light receiving side. It can be emphasized individually or at the same time to exert a characteristic visual effect.

The aluminum material of the present invention having such characteristics (particularly aluminum foil or aluminum sheet)
Especially for packaging (eg, for confectionery packaging, dairy packaging,
For cosmetic packaging, medicine packaging) or for decoration (for example,
It can be suitably used as wallpaper, fusuma paper, various covers, cards, posters, various containers, building materials, fittings, furniture, electric appliances, edge decorations of automobiles, and other various decorations).

[0024]

1 and 2 show an aluminum foil having a cross pattern on its surface as an example, to further clarify the features of the present invention. Note that the present invention is not limited to the embodiments.

In order to apply a cross-pattern roll mark as shown in FIG. 1 or FIG. 2 to an aluminum foil, for example, a cross-pattern corresponding to the surface of a rolling roll, an embossing roll or the like is formed in advance, and the aluminum foil is applied. What is necessary is just to manufacture by using these rolls. As a result, the cross pattern on the roll surface is transferred to the obtained aluminum foil, so that an aluminum foil having a cross pattern on the surface is obtained.

The aluminum foil of FIG. 1 has a cross pattern (entire cross cut pattern) on the entire surface, and can be obtained by using a roll having a full cross cut pattern corresponding to the surface.

The aluminum foil shown in FIG. 2 has a striped cross pattern (striped cross cut pattern), and is obtained by using a roll having a striped cross cut pattern corresponding to the surface. Can be.

On the surface of the rolling roll or the embossing roll,
Similarly to the aluminum material of the present invention, a cross pattern is formed by the intersection of a plurality of parallel linear filaments (X) and a plurality of parallel linear filaments (Y). Further, these linear filaments are formed by irregularities on the roll surface. Then, in a rolling step or the like, the concave portion on the roll surface is transferred to the aluminum material surface, and a convex portion is formed on the aluminum surface. On the other hand, the protrusions on the roll surface are transferred to the surface of the aluminum material to form recesses on the aluminum surface.

The method of forming the above-mentioned cross pattern on the surface of a rolling roll or an embossing roll is not limited. For example,
Abrasive material such as abrasive paper is gradually moved to the other end while being pressed against one end of the rotating roll with a predetermined pressure, and after the abrasive material reaches the other end, the abrasive material is similarly moved in the opposite direction. Thereby, a cross pattern can be provided on the roll surface. In the above method, a desired cross pattern can be appropriately formed depending on, for example, the type of the abrasive, the moving speed of the abrasive, the moving direction, and the like.

The angle θ between one of the linear filaments and the rolling direction is determined by the following equation, and the intersection angle with the other linear filament is given by 2θ.

Θ = Tan ⁻¹ {v / (π · dn)} (where θ: the angle between one of the slanted linear filament groups and the rolling direction, d: roll diameter (m), v: The moving speed of the abrasive (m / min) and n: the number of rotations of the roll (rpm) are shown.) When changing the depth of the cross pattern or the number of irregularities, for example, the surface roughness of the abrasive is changed, It can be appropriately performed by changing the pressure of the abrasive to be pressed.
The range of change of θ can also be changed by the width of the abrasive, and the wider the width, the larger θ can be. For example, as shown in FIG. 2, an aluminum foil having a cross pattern on a part of its surface can be provided with the cross pattern relatively easily by appropriately selecting the width of the abrasive.

[Brief description of the drawings]

FIG. 1 shows an example of an aluminum foil having a cross pattern (entire cross-cut pattern) on the entire surface.

FIG. 2 shows an example of an aluminum foil having a striped cross pattern (striped cross cut pattern).

FIG. 3 shows a schematic view (a perspective view including a cross-sectional view) of a linear filament formed on the surface of an aluminum material.

Claims (7)

[Claims] 1. A material having a cross pattern on a part or all of the surface of an aluminum material, wherein the cross pattern includes a plurality of parallel linear filaments (A) and a plurality of linear filaments parallel to each other. An aluminum material formed by the intersection of (B), wherein the linear filament is formed by irregularities on the surface of the aluminum material. 2. The aluminum material according to claim 1, wherein the aluminum material is an aluminum sheet or an aluminum foil. 3. The aluminum material according to claim 2, wherein the thickness is 500 μm or less. 4. The foil or sheet obtained by using at least one of a rolling roll and an embossing roll, wherein a cross pattern is given by transfer from the roll surface. Aluminum material. 5. The aluminum material according to claim 1, wherein the surface roughness Ra is 0.2 μm or more. 6. The packaging aluminum material according to claim 1. 7. The decorative aluminum material according to claim 1.