JPH04242999A - Protective material for magnetic shield - Google Patents

Abstract

PURPOSE:To provide a protective material for a magnetic shield to mail, transport safely a magnetic recording medium such as an FD, a magnetic tape which is remarkably affected by influence of a magnetic force. CONSTITUTION:A protective material for a magnetic shield characterized in that a thin plate 2 made of a nonmagnetic material is adhered to at least one side of a waved sheet 3 and further sheets 4 are adhered from both sides. Excellent magnetic shield is obtained due to use of the thin plate of the nonmagnetic material. A strength sufficiently durable against mailing, transportation can be obtained due to adherence of the thin plate by using a sheet having a suitable thickness of a waved shape.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides computer software,
The present invention relates to a protective material for magnetic shielding that enables safe and reliable mailing and transportation of magnetic recording media such as floppy disks (hereinafter referred to as FD) and magnetic tapes that store word processing documents and the like.

0002

[Background Art] Recently, office automation equipment such as personal computers and word processors has become popular among companies and individuals all over the country, and documents created using computer software or word processors are often saved on FDs and sent by mail. Ta.

[0003] In particular, from December of this year, a method of sending FDs by mail will be started for patent and utility model application procedures to protect new and inventive technologies. It is expected that the number of opportunities to store and send by mail will rapidly increase. In addition, it is thought that opportunities to mail and transport not only FDs but also other magnetic recording media such as magnetic tapes will increase.

However, recording media that utilize magnetism, such as FDs and magnetic tapes, are susceptible to damage during mailing and transportation due to dust, scratches from contact with other objects, and the effects of magnetic objects such as other mail. There was a possibility that the contents would disappear, which was a problem.

[0005] As a method for solving the above-mentioned problem, packages for mailing FDs are commercially available in order to prevent the contents stored on the FDs from disappearing during mailing during the above-mentioned patent and utility model application procedures. This package has the shape shown in FIG. 1 and is made of cardboard, and has a vinyl case inside, and has a structure in which the FD is housed.

[0006]

[Problems to be Solved by the Invention] The above-mentioned FD mailing package has the following problems. That is, although cardboard is excellent in preventing dust from adhering to the FD and preventing scratches due to contact among the factors that cause the contents stored in the FD to disappear, it cannot be expected to be effective in shielding against external magnetic force. Therefore, if there is an object that generates magnetic force nearby during mailing, it is impossible to prevent the stored contents from being affected.

[0008] The present invention provides a protective material for magnetic shielding that has excellent shielding properties against magnetism, which could not be expected to be effective with conventional cardboard mailing packages, and is also excellent in preventing dust from adhering to it and preventing scratches caused by contact. The purpose is to

[0009]

[Means for Solving the Problems] The present invention for solving the above-mentioned problems involves bonding a thin plate made of a non-magnetic material such as austenitic stainless steel to at least one side of paper having a corrugated shape, and then bonding the paper from both sides. This is a protective material for magnetic shielding that is adhesively bonded.

0010

[Operation] The protective material for magnetic shielding of the present invention exhibits excellent magnetic shielding properties by using a thin plate of non-magnetic material. Furthermore, by adhering corrugated paper to one side of the thin plate, sufficient strength for mailing and transportation can be obtained.

[0011]

Embodiments Examples of the present invention will be described below with reference to the drawings. FIG. 2 is a cross-sectional view of a protective material for magnetic shielding, which is an embodiment of the present invention. In FIG. 2, 2 is a non-magnetic thin plate with a thickness of 80 μm manufactured from SUS304 + 1% Cu steel, which is an austenitic stainless steel, and 3 has a corrugated shape made of cardboard bonded to the non-magnetic thin plate 2. 4 is cardboard glued to the outside of both the non-magnetic thin plate 2 and the corrugated paper 3.

The protective material for magnetic shielding obtained in this way was folded into an appropriate size that can accommodate an FD in the same way as a conventional cardboard mailing package for FD, and the material is folded as shown in FIG.
A package for mailing was created by finishing it in the shape shown in the figure.

[0014] In order to evaluate the effect of the magnetic shielding property of the package using the protective material for magnetic shielding of the present invention, a conventional cardboard package and a 3.5-inch paperboard package in which a document created using a word processor was stored were stored in the package of the present invention. After inserting the FD, a commercially available permanent magnet was brought close to it from outside the package, and then the FD inside was taken out and the state of preservation of the documents stored on the FD was checked.

As a result, normal documents were saved on the FD taken out from the package made of the protective material for magnetic shielding of the present invention, but on the FD taken out from the conventional package.
In case D, the document disappeared, and it was confirmed that it exhibited excellent magnetic shielding properties.

Furthermore, by bonding corrugated paper of an appropriate thickness to a thin plate of non-magnetic material, it has the same strength or more than conventional cardboard mailing packages, and is suitable for use with 5-inch and 8-inch FDs. We have confirmed that even weak FDs such as FDs can be safely mailed and transported.

[0017]

[Effects of the Invention] The protective material for magnetic shielding of the present invention provides excellent magnetic shielding properties by using a thin plate of non-magnetic material. In addition, by waving paper of appropriate thickness and adhering it to the thin plate, sufficient strength for mailing and transportation can be obtained.

[0018] Therefore, magnetic recording media such as FDs and magnetic tapes storing computer software and word processing documents can be reliably and safely mailed and transported.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a commercially available mailing package.

FIG. 2 is a partially enlarged sectional view illustrating an embodiment of the protective material for magnetic shielding of the present invention.

[Explanation of symbols]

1 FD mailing package 2 Non-magnetic thin plate 3. Wave-shaped paper 4 Cardboard

Claims (1)

[Claims] 1. A protective material for a magnetic shield, characterized in that a thin plate made of a non-magnetic material is adhered to at least one side of a piece of paper having a corrugated shape, and paper is further adhered to both sides of the thin plate.