JPH08230907A - Paint tubes - Google Patents

Abstract

(57) [Abstract] [Problem] It is easy to take out paint, and even if it is stored for a long period of time, appearance defects such as corrosion do not occur, and moreover, corrosion does not easily occur on the inner surface of the tube in contact with the paint. A paint tube that is formed by press-molding a metal and is plastically deformable, wherein the material is tin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint tube for storing watercolors, poster colors, prints, resin paints, oil paints and the like.

[0002]

2. Description of the Related Art Conventionally, paints are often used by being filled in tubes for portability and storability. As a tube used for paint, there is little reaction with paint over time, there is little corrosion in the air, the tube is soft and it is easy to eject paint, there is no restoration of the tube and air does not enter the tube There is a condition that the appearance is good. Lead or aluminum was press-molded as a material satisfying such conditions to form a tube, which was used as a paint tube.

[0003]

However, lead or aluminum has merits and demerits, and does not always satisfy the function as a paint tube.

That is, in the case of lead, although the tube is soft and it is easy to draw out the paint, it corrodes relatively quickly in the air, which may cause a problem in appearance quality. Further, the pH value of the paint put in the tube is 7 or less, or the inside surface of the tube is affected by the reaction depending on the pigment used, which may cause discoloration or deterioration of the paint over time.

Further, aluminum has the advantage that it is relatively light in weight and is easy to handle during manufacturing work, but the pH value of the paint to be put in the tube is 7
There is a problem that the inner surface of the tube is attacked by the reaction depending on the pigment used below or depending on the pigment used, and the holes are opened or broken with time. In order to prevent this, it is generally used by coating the inner surface with resin, but it is difficult to completely eliminate the pinholes in the resin coating layer, and aluminum is attacked from the pinholes. There is. Also, since aluminum is hard, there is a problem that it is more difficult to put out paint than a tube. Furthermore, in air, an oxide film is formed on the surface to lose the gloss, so the appearance immediately after press molding is very beautiful, but problems may occur in the appearance quality in a short period of time.

[0006]

DISCLOSURE OF THE INVENTION The present invention is summarized in a paint tube which is formed by press-molding a metal and is plastically deformable, wherein the material is tin. Is.

The present invention will be described in detail below. In the present invention, tin is used as the paint tube. Although tin usually contains impurities such as iron and lead as impurities, it is preferable that the purity is higher than 99.8% when used as a paint tube.

A specific example of tin is ThreeDiam.
onds (purity 99.99% (impurities included and their proportions (the same applies hereinafter) Sb: 0.0005%, As: 0.00
09%, Pb: 0.0025%, Bi: 0.0005
%, Cu: 0.0015%, Fe: 0.0018%),
Mitsubishi Materials Co., Ltd., special grade tin (purity 99.97)
% (Sb: 0.0055%, As: 0.002%, P
b: 0.0016%, Bi: 0.0012%, Cu:
0.0007%, Fe: 0.0039%, S: 0.00
05%, Zn: 0.002%, Al: 0.002%),
Made in China, Kinmi Color Metal Industry Co., Ltd., Banka (purity 9
9.939% (Sb: 0.005%, As: 0.007
%, Pb: 0.028%, Bi: 0.004%, Cu:
0.004%, Fe: 0.005%, Co + Ni: 0.
004%, Al: 0.001%, Cd: 0.001%,
Zn: 0.001%), Indonesia, IMDONES
IANSTATE TIN CORPORATION
Manufactured by Pass No. 1 (purity 99.93% (Sb:
0.02%, As: 0.0045%, Pb: 0.02
%, Bi: 0.0001%, Cu: 0.0001%, F
e: 0.0035%, S: 0.005), Pass R
IVER (Purity 99.8% (Sb: 0.04%, As:
0.0035%, Pb: 0.08%, Bi: 0.000
1%, Cu: 0.0002%, Fe: 0.0035%,
S: 0.0005%), above, United Kingdom, Capper
Pa-ss & Sons, Ltd. Made), Thaisa
rco (purity 99.925% (Sb: 0.003%, A
s: 0.025%, Pb: 0.02%, Bi: 0.00
6%, Cu: 0.001%, Fe: 0.01%, Ni +
Co: 0.004%), Thailand Sm, Thailand
elting & Refining, Co. , Ltd.
Made), The Strategy Trading C
o. , Ltd. (Purity of 99.89% (Sb: 0.003
%, As: 0.038%, Pb: 0.038%, Bi:
0.008%, Cu: 0.015%, Fe: 0.005
%), Malaysia, The Strategy Trad
ing Co. , Ltd. Manufactured) and the like.

The method for producing a paint tube is as follows. The tin metal is melted in a melting pot, poured into a mold, formed into a rollable shape, and then rolled to an appropriate thickness, depending on the volume of the tube. A tablet of a size is formed and this tablet is press-molded. FIG. 1 shows an example of a paint tube having a small diameter portion 1 and a large diameter portion 2. Such a paint tube is filled with paint, and the open end at the rear of the large diameter portion 2 is crushed to form a bent portion 3. Further, the small diameter portion 1 is covered with a cap 4, and the inside of the tube is hermetically sealed. Make up. When forming the bent portion 3 at the rear of the paint-containing tube, an adhesive agent or the like may be used or welded to improve the airtightness.
The cap 4 is configured to be sealed to the small diameter portion 1 by screwing, fitting by a fitting rib, or the like.

[0010]

The function of tin is that it is covered with a thin film of invisible tin (IV) oxide, which is relatively hard to oxidize, and therefore it is unlikely to corrode in the air and is unlikely to cause external problems. In addition, the hardness is low, it has plasticity and plastically deforms, it is easy to push the paint out of the tube, and since the tube does not return to its original shape, there is almost no air entrapped in the tube after use, so the next use Sometimes I can paint smoothly.

[0011]

Embodiments of the present invention will be described below. Example 1 Using Three Diamonds as tin, a tablet was formed by the method described above, and a paint tube was formed by press molding.

Example 2 A tin tube was prepared in the same manner as in Example 1, except that tin was used as tin.

Example 3 A paint tube was prepared in the same manner as in Example 1, except that BANKA was used as tin.

Example 4 As tin, Pass No. 1 was used in the same manner as in Example 1 to prepare a paint tube.

Example 5 A paint tube was prepared in the same manner as in Example 1, except that Taisarco was used as tin.

Example 6 As tin, The Strategy Trading C
o. Ltd. Was used in the same manner as in Example 1 to prepare a paint tube.

Example 7 A paint tube was prepared in the same manner as in Example 1, except that Pass RIVER was used as tin.

Comparative Example 1 In Example 1, tin (Three Diamond)
Instead of lead (purity 99.95%, manufactured by Toho Zinc Co., Ltd.)
A paint tube was prepared in the same manner as in Example 1 except that was used.

Comparative Example 2 In Example 1, tin (Three Diamond) was used.
A paint tube was prepared in the same manner as in Example 1 except that aluminum (purity: 99.85%, manufactured by Nippon Light Metal Co., Ltd.) was used instead of.

Application Example 1 A thread is formed on the small diameter part of the paint tube obtained in Example 1, a sealable cap is screwed on, and about 5 cc of paint is filled from the open end of the large diameter part. The open end of the large diameter portion was crushed and bent, and the inside of the tube was completely sealed to obtain a paint-containing tube. As the paint to be filled, a commercially available watercolor paint of Gunjo color (F watercolor, manufactured by Pentel Co., Ltd.) was used.

Application Example 2 A pigment-containing tube was prepared in the same manner as in Application Example 1, except that the paint tube obtained in Example 2 was used in place of the paint tube obtained in Example 1. Obtained.

Application Example 3 A pigment-containing tube was prepared in the same manner as in Application Example 1 except that the paint tube obtained in Example 3 was used instead of the paint tube obtained in Example 1. Obtained.

Application Example 4 A pigment-containing tube was prepared in the same manner as in Application Example 1 except that the paint tube obtained in Example 4 was used instead of the paint tube obtained in Example 1. Obtained.

Application Example 5 A pigment-containing tube was prepared in the same manner as in Application Example 1 except that the paint tube obtained in Example 5 was used in place of the paint tube obtained in Example 1. Obtained.

Application Example 6 A pigment-containing tube was prepared in the same manner as in Application Example 1, except that the paint tube obtained in Example 6 was used in place of the paint tube obtained in Example 1. Obtained.

Application Example 7 A pigment-containing tube was prepared in the same manner as in Application Example 1 except that the paint tube obtained in Example 7 was used in place of the paint tube obtained in Example 1. Obtained.

Comparative Application Example 1 The same procedure as in Application Example 1 except that the paint tube obtained in Comparative Example 1 was used instead of the paint tube obtained in Example 1 in Application Example 1. Got

Comparative Application Example 2 The same procedure as in Application Example 1 except that the paint tube obtained in Comparative Example 2 was used instead of the paint tube obtained in Example 1 in Application Example 1. Got

Corrosion tests and paint extrudability tests were carried out using the paint-filled tubes obtained in Application Examples 1-7 and Comparative Application Examples 1-2. The results are shown in Table 1.

[0030]

[Table 1]

Corrosion test: The paint-containing tubes obtained in Application Examples 1 to 7 and Comparative Application Examples 1 and 2 are left in a temperature of -20 ° C for 24 hours and then in a temperature of 50 ° C for 24 hours. With this as one cycle, a forced cold and heat resistance test was conducted for 5 consecutive cycles, and the outer surface of the tube and the inner surface of the tube were visually observed and evaluated. The inner surface of the tube was observed by using a tube that was cut open and washed. A: No corrosion. B: No corrosion (slightly inferior to A due to surface gloss, etc.). C: There is some corrosion. D: There is corrosion.

Paint extrudability test: Evaluation was made based on the sensation when the paint was extruded with the fingers from the paint containing tubes obtained in Application Examples 1 to 7 and Comparative Application Examples 1 and 2. A: It is soft and very easy to extrude. B: Slightly hard and slightly hard to push out. C: Hard to push out.

[0033]

As described above in detail, the paint tube according to the present invention allows the paint to be easily taken out, does not cause a defective appearance such as corrosion even when stored for a long period of time, and
It also has an excellent property that corrosion is unlikely to occur on the inner surface of the tube which is in contact with the paint.

[Detailed Description of Drawings]

FIG. 1 is a front view of an embodiment of a paint tube of the present invention.

FIG. 2 is a front view of an embodiment of the paint-containing tube of the present invention.

[Explanation of symbols]

 1 Small diameter part 2 Large diameter part 3 Bending part 4 Cap

Claims (1)

[Claims] 1. A paint tube which is formed by press-molding a metal and is plastically deformable, wherein the material is tin.