JPH0617133B2 - Electroless dust removal packaging method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention puts an article, such as a precision part, which easily adheres to a dust into a package such as a synthetic resin bag, and removes air from the inside of the package at the same time. The present invention relates to a packaging method for removing dust and the like adhering to the inside of a body and articles.

(Prior Art) Conventionally, precision parts and the like often use members made of synthetic resin such as substrates thereof, and measures must be taken to prevent damage due to static electricity, adhesion of dust, and the like. However, it is extremely difficult to subject this precision component itself to antistatic treatment because its resistance value may change. Therefore, static electricity is removed from these precision parts and the like by corona discharge, and they are also removed in the clean room by handling them.
Also, during transportation and storage, they were placed in antistatic bags.

(Problems to be Solved by the Invention) However, if the precision parts and the like are simply put in the bag, they are easy to move in the bag and air is also easy to enter. Therefore, the above-mentioned parts rust and corrode, and the removal of dust is insufficient.

Therefore, in conventional food packaging, etc., it is possible to use a vacuum pack that is used to prevent corrosion for articles such as precision parts, but if you simply vacuum pack precision parts that are weak against static electricity, when opening the bag, Air flows in, and at the same time, static electricity due to peeling charging is generated, which may destroy precision parts or redeposit dust or dust.

(Means for Solving the Problems) No charge is generated inside the dielectric material (resistance value 10 ^{15 to 20} Ω) such as plastics, and the charge is generated only on this surface. When the surface in this state is modified to have a resistance value of about 10 ⁹ Ω and surrounded by a surface layer having this resistance value, the electric charge inside the surface is likely to come out.

When this is vacuum-packed with an article such as synthetic resin inside, the distance between the bag on the surface and the article is reduced, and therefore the charge inside the bag is transferred to the surface and there is no electric field inside, forming a so-called Faraday cage. .

The present invention was made in view of this point, and stores an article such as a synthetic resin product, which easily attach dust, in a packaging body provided with an antistatic treatment layer on at least the outer peripheral surface thereof. Put the product in an air suction container so that the opening of the package does not face the air suction port, and remove the air in the container to remove the air in the package and remove dust, and then open the package. It is an electroless dust removal packaging method that hermetically seals a part.

(Operation) When an article such as an electronic component is placed in a package having an antistatic treatment layer on at least the outer peripheral surface as described above, the inside of the package becomes uncharged as described above, and This effect becomes more noticeable when the is vacuum-packed.

Then, when this package is placed in an air suction container so that the opening of the package does not face the air suction port and the air in the container is evacuated, the suction of the air inside the package lags behind its surroundings. The package bulges, whereby dust and dust adhering to the inner circumference of the package and the articles in the package peel off due to the non-electric field inside the package. In this case, static electricity is generated if the package is not subjected to antistatic treatment, but in the present invention, static electricity is not generated even if the package is expanded because of the antistatic treatment. After that, the air inside the package is removed,
Dust and dust are also discharged together with this. If the package is sealed in this state, the article is packaged in a state of removing static electricity and dust.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

The precision component 1 is put into a bag 2 having an antistatic treatment layer on the outer peripheral surface through an opening 3 and the bag 2 is placed in an air suction container 4 so that the opening of the bag 2 does not face a suction port 7 described later. Then, the opening 3 of the bag 2 is locked to five heat sealing members, and the lid 6 of the air suction container 4 is closed and hermetically sealed. Then, the air in the container 4 is sucked from the suction port 7 of the air suction container 4.
Then, the air in the air suction container 4 is evacuated, whereby the pressure around the bag 2 is reduced and the bag 2 is temporarily bulged. Bag 2
Has an antistatic layer on the outer periphery, so that the inside of the bag 2 is in an electric field-free state, and dust and dust adhering to the outer periphery of the precision component 1 inside the bag 2 is peeled off due to the bulging of the bag 2 To float. However, since the air in the air suction container 4 continues to be sucked, the air in the bag 2 is also exhausted at once.
Dust and dust are also discharged from the bag 2 together with this air. Then, the opening 3 of the bag 2 is thermally separated by the heat seal member 5. As a result, the precision component 1 is vacuum-packed in a state where the dust and dust in the bag 2 are removed, as shown in FIG.

Further, when vacuum-packing as in the above-mentioned embodiment, as shown in FIG. The rust effect is exerted for a very long time.

Although the antistatic treatment layer is formed only on the outer peripheral surface of the bag 2 in the above embodiment, the present invention is not limited to this, and it may be formed on both the inner and outer surfaces of the bag 2. Further, although the bag 2 is used in the above embodiment, the bag is not limited to the bag, and an appropriate packaging body may be used.

(Effects of the Invention) The present invention is the above-described manufacturing method, in which the packaging body in which the articles are packaged is put into an air suction container, and when the air in the container is removed, the opening of the packaging body does not face the air suction port. So
Since the suction of the air inside the package is delayed from that of its surroundings, the package expands once. At this time, since an antistatic layer is provided on at least the outer peripheral surface of the bag, the inside of the package is in an electric field-free state, static electricity is not generated when the package is bulged, and the bulging force of the package causes the articles in the package to become Dust and dust that had adhered to it will come off and fly up inside the package. Immediately after the dust and dust are blown up in this way, the air in the package is sucked, and the dust and dust are discharged outside the package together with the air. Therefore, in this method, dust and dust inside the package are completely discharged. Moreover, since the product is vacuum-packed in this state, dust is removed from the inside of the package and the article is kept fresh. Also, since the package has an antistatic treatment layer,
Static electricity does not occur in each process of vacuum packing,
It keeps the dust and dust easily peeled off. Even when the package is opened and the article is taken out, the antistatic treatment layer on the outer periphery of the bag does not cause peeling charge due to the opening of the package.

As described above, according to the method of the present invention, when an article is packed in a package, dust removal and charge removal are easily and reliably performed, and the packaged article is prevented from being disturbed by static electricity and adhesion of dust or dust during the packaging. Can be prevented.

[Brief description of drawings]

1 to 4 are process diagrams of the manufacturing method of the present invention,
FIG. 5 is a sectional view of a package manufactured by the method of the present invention, and FIG. 6 is a sectional view of a package manufactured by another embodiment of the present invention. In the figure, 1 is a precision part, 2 is a bag, 4 is an air suction container,
6 is a lid and 8 is a mount.

Claims (1)

[Claims] 1. An article, such as a synthetic resin product, which is prone to dust adhesion, is housed in a package having at least its outer peripheral surface covered with an antistatic treatment layer, and the package has an air suction port. In order not to face with, put in an air suction container, by removing the air in the package by removing the air in the container, to remove dust, after which the opening of the package is sealed. Electroless dust removal packaging method.