JP2003312748A - Rustproof packing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To costlessly provide a rustproof packing method capable of avoiding influence on a human body and securing a long rustproof term. <P>SOLUTION: An article P is put in an ordinal polyethylene bag 9 together with a rustproof polyethylene sheet 5 impregnated with an evaporative antirust, and packed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging method that does not cause rust on articles.

[0002]

2. Description of the Related Art Previously, a method of putting anticorrosive powder in a paper or polyethylene bag together with an article and sealing it, a method of wrapping an article with antirust-added paper (antirust paper) and then packaging it, A method of applying an oil (rust preventive oil) to which a rusting agent is added to an article and packaging the article has been adopted.

The vaporizable rust preventive used here is a solid
It is a compound that gradually vaporizes (sublimates) at room temperature regardless of liquid, and the vaporized gas chemically and physically adsorbs on the metal surface to form an oxide film and prevent metal corrosion.

However, the rust preventive agent itself such as rust preventive powder has a rapid vaporization rate in the air and has an immediate effect, and the rust preventive period is short and the rust preventive effect cannot be expected for many years.

Although rust preventive oil is not as good as powder, it easily vaporizes and has a short rust preventive period. Since the anticorrosive paper is in a state where the paper fibers are entangled in the anticorrosive agent, vaporization is somewhat suppressed, but
The rust prevention period is relatively short. Since the vaporized rust preventive gas is toxic, its immediate effect also adversely affects the packing operator.

When a rust preventive agent having immediate effect is put in a polyethylene bag and sealed as described above, the gas pressure in the bag becomes high due to the vaporized gas, and the bag expands and hinders storage and is easily broken. If holes are formed, gas may be released at once.

Therefore, at present, a method of putting an article in a polyethylene bag impregnated with a rust preventive and packaging it is widely adopted. When polyethylene is impregnated with a rust preventive agent, the rust preventive agent is embedded in the plastic, and vaporization of the rust preventive agent is suppressed, so that the rust preventive period can be prolonged, which can provide a delayed effect.

[0008]

However, when the article is packed in a rust-proof polyethylene bag impregnated with a rust-preventive agent and packed, the rust-preventive gas vaporized from the rust-proof polyethylene bag is released to the outside although it has a delayed action. If many packaged items are stored in one place, there is a concern that it will affect the human body.

Further, since the rust-proof polyethylene bag is always in contact with the outside world, its slow-acting property is limited, and a long rust-proof period cannot be expected.

Further, polyethylene impregnated with a rust preventive is
Compared with ordinary polyethylene, it is more difficult to shape it, there is a high probability that defective products will be produced when it is formed into a bag, and expensive rust-preventive polyethylene may be wasted and the cost may increase.

The present invention has been made in view of the above point, and an object thereof is to provide an inexpensive rust preventive packing method capable of avoiding the influence on the human body and ensuring a long rust preventive period. It is in.

[0012]

In order to achieve the above-mentioned object, the invention according to the first aspect of the present invention uses an anticorrosive polyethylene sheet impregnated with a vaporizable anticorrosive agent and an article in an ordinary polyethylene bag. The rust-proof packing method of putting and packing was adopted.

Since the articles are housed in a normal polyethylene bag together with the rustproof polyethylene sheet, the rustproofing agent is vaporized from the rustproof polyethylene sheet to generate rustproof gas.
Since it is placed in a normal polyethylene bag, it is possible to suppress the effects on the human body.

Since the rust-preventive polyethylene sheet is used and sealed in the polyethylene bag, the vaporization rate of the rust-preventive agent is slow, the slow-acting property is promoted, and the rust-preventing period can be significantly extended, and the polyethylene The bag does not suddenly expand and is easy to store.

Since the rust-proof polyethylene sheet does not need to be processed and molded into a bag or the like, no defective product is produced and the cost can be suppressed without wasting expensive rust-proof polyethylene.

According to a second aspect of the present invention, in the rust-preventive packaging method according to the first aspect, the polyethylene bag has the inlet sealed by heat-welding after containing the article together with the rust-proof polyethylene sheet. Articles are housed together with an anti-corrosion polyethylene sheet in a characteristic polyethylene bag, and the polyethylene bag seals by heat-sealing the inlet, so the anti-corrosion gas generated from the anti-corrosion polyethylene sheet does not leak to the human body. The effect of can be avoided.

According to a third aspect of the present invention, in the rust-preventive packaging method according to the first or second aspect, the rust-preventive polyethylene sheet is a mixture of polyethylene pellets and a rust-preventive agent, which is melt-extruded into a tubular shape. It is characterized in that after being formed, expanded and flattened, both end edges are cut into two sheets and then cut into a required length.

Since it can be manufactured by cutting the both edges which are formed into a tubular shape and expanded and flattened into two sheets, and then cut into a required length, there is no difficult process and a defective product is obtained. It is possible to efficiently produce an anticorrosion polyethylene sheet without producing

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. The manufacturing process of a rustproof polyethylene sheet is shown in FIG.

The polyethylene pellets 1 and the vaporizable rust preventive agent 2 are agitated by a stirrer 10 and heat-dissolved by a melt extruder 11 for extrusion. A ring-shaped die 12 is provided at the extrusion port, and a cylindrical rustproof polyethylene 3 is extrusion-molded, and inflation (expansion) is carried out by an inflator 13 to wind the wound roll 4.

Then, while pulling out the tubular long rust-proof polyethylene 3 from the roll 4, the cutters 14 are inserted at both edges to cut the two rust-proof polyethylene sheets 5. This long rust-proof polyethylene sheet 5 is cut at a suitable length with a cutter 15 to make a short rust-proof polyethylene sheet 5.
Are sequentially manufactured.

Conventionally, a bag-like shape was formed by heat welding (heat sealing) the front of the tubular long rust preventive polyethylene 3 cut by a cutter, but the polyethylene containing a rust preventive agent was heat welded. It is not so easy to do, there is a possibility that defective products may come out, and expensive rust preventive polyethylene was sometimes wasted, but since the present invention uses the rust preventive polyethylene sheet as it is, defective products may also come out. Therefore, the cost can be suppressed without wasting expensive rust preventive polyethylene.

As shown in FIG. 2, the rustproof polyethylene sheet 5 thus produced is put in a normal polyethylene bag 9 together with, for example, a metal part P, and the inlet of the polyethylene bag 9 is heat-welded and sealed (heated). Seal and package.
(See Figure 2).

FIG. 3 shows a state in which the parts P are thus packed. Rust-prone parts P include bolts that have not been surface-treated, parts that have been cut and polished from castings and sinters, metal that has a dirty surface that is prone to dew condensation, hardened tappets, and press distortion after plating surface treatment. Metals that have been subjected to cutting and cutting, pipe joints that have been cut and polished after painting, etc.

Further, it is easy and reliable to heat-bond ordinary polyethylene containing no rust preventive agent. The ordinary polyethylene bag 9 is inexpensive.

The polyethylene bag 9 can be manufactured by the same process as that for manufacturing the rustproof polyethylene sheet 5 as shown in FIG. Ie polyethylene pallet 1
Is melted by heat, extruded from a ring die and inflationed to form a cylindrical long polyethylene 7 and wound and wound 8
And

Then, a cylindrical polyethylene 7 is pulled out from the reel 8 and cut at an appropriate length with a cutting machine, and a portion slightly in front of the cut portion is welded with a welding machine to perform heat sealing, thereby forming a bag shape. To form the polyethylene bag 9.

Since polyethylene does not contain impurities such as a rust preventive, heat sealing can be performed easily and surely and the probability of defective products is extremely low. In addition, since polyethylene itself is inexpensive, the cost does not increase.

In this way, since the part P is put in the low-cost polyethylene bag 9 together with the anticorrosion polyethylene sheet 5 and the inlet is heat-sealed, the anticorrosion gas generated from the anticorrosion polyethylene sheet 5 does not leak to the human body. The effect of can be avoided.

Since the rust-preventive polyethylene sheet 5 is used and sealed in the polyethylene bag 9, the vaporization rate of the rust-preventive agent is slow, the delayed effect is promoted, and the rust-prevention period can be significantly extended.

Further, since the polyethylene bag 9 does not suddenly expand, it is easy to store it and is highly resistant to damage and highly safe. As described above, the cost of the rust preventive polyethylene sheet 5 is suppressed, the polyethylene bag 9 is also inexpensive, and the cost required for the entire packaging can be suppressed to a low cost.

[Brief description of drawings]

FIG. 1 is a diagram showing a process for producing a rustproof polyethylene sheet according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a packing method according to the present embodiment.

FIG. 3 is a diagram showing a packed state.

FIG. 4 is a diagram showing a process for producing a polyethylene bag.

[Explanation of symbols]

1 ... polyethylene pellet, 2 ... rust preventive agent, 3 ... rust preventive polyethylene, 4 ... rewind, 5 ... rust preventive polyethylene sheet, 7
... polyethylene, 8 ... roll, 9 ... polyethylene bag, 10 ...
Stirrer, 11 ... Melt extruder, 12 ... Ring die, 13 ... Inflator, 14 ... Cutter, 15 ... Cutting machine, P ... Parts.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tatsuo Koyama             2-1-1 Minamiaoyama, Minato-ku, Tokyo Honda Motor Co., Ltd.             Business (72) Inventor Yoshinori Kuroda             2-1-1 Minamiaoyama, Minato-ku, Tokyo Honda Motor Co., Ltd.             Business F-term (reference) 3E067 AA11 AB49 BA12A BB15A                       CA04 CA24 EA06 EE21 EE28                       FA01 FC01 GA25

Claims (3)

[Claims] 1. A rust preventive packing method, characterized in that an article is put in an ordinary polyethylene bag and packed together with a rust preventive polyethylene sheet impregnated with a vaporizable rust preventive agent. 2. The rust preventive packing method according to claim 1, wherein the polyethylene bag is sealed by heat-sealing the inlet after accommodating the article together with the rust preventive polyethylene sheet. 3. The rust-preventive polyethylene sheet is formed into two sheets by stirring polyethylene pellets and a rust-preventive agent, melt-extruding to form a tubular shape, and expanding and flattening both edges. After that, the rust-preventive packaging method according to claim 1 or 2, wherein the rust-preventive packaging method is produced by cutting into a required length.