JPH021918Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electromagnetic wave shielding bag useful for mailing envelopes and storage bags for floppy disks and the like.

Recently, with the rapid development of the electronics industry, the problem of electromagnetic wave pollution has been brought into focus.

For example, if a floppy disk used as an information storage medium in an electric disk storage device is exposed to electromagnetic waves, particularly lines of magnetic force, the stored information may be disturbed and the disk may become unusable. Therefore, floppy disks must always be stored covered with something that shields them from electromagnetic waves.

In view of the above-mentioned circumstances, the present invention is a bag body useful for mailing envelopes and storage bags for items that are thin and flexible, such as floppy disks, and are adversely affected by electromagnetic waves. Its structure is as follows: B. The outer bag is an ordinary paper bag, and inside it is a metal plate or metal foil made of ferromagnetic metal such as iron or nickel. An electromagnetic wave shielding plate is formed by pasting a reinforcing plate made of thick cardboard or the like on one side and a buffer layer with antistatic treatment on the other side, and forming it into a flat box shape with the buffer layer inside. It is characterized by being folded in half or folded in half.

Next, an embodiment of the present invention will be described with reference to the drawings.

Figure 1 shows a front view of the bag of the present invention, and Figure 2 shows an enlarged sectional view of the bag of the present invention.A is an outer bag, B is an electromagnetic shielding plate that also serves as a reinforcing plate. is constructed as shown in FIG.

That is, in FIG. 3, 1 is iron foil, 2 and 3 are thermoadhesive adhesive layers made of polyethylene or the like formed on both sides of the iron foil 1, and 4 is thick cardboard or the like stuck to adhesive layer 2. 5 is a buffer layer attached to the adhesive layer 3, and is made of antistatically treated nonwoven fabric or plastic buffer material.This electromagnetic wave shielding plate B is a bag with the buffer layer 5 inside. It is either folded into a shape or folded in half and placed inside the outer bag A.

In the above, iron foil was used as the metal plate or metal foil, but the metal plate or metal foil in the present invention may be an iron plate (foil) or a metal plate (foil) made of nickel or other ferromagnetic metal. You may also use
Alternatively, the metal plate (foil) may be plated with zinc, nickel, or the like.

The electromagnetic wave shielding bag of the present invention configured as described above has a flexible sheet-like or thin plate-like shape such as a floppy disk between the opposing buffer layers 5 and 5 of the electromagnetic wave shielding plate B, and is designed to prevent electromagnetic waves and magnetic lines of force. If you store items that are easily affected by electromagnetic waves, even if the bag receives electromagnetic waves or lines of magnetic force, the iron foil 1 inside the electromagnetic wave shielding plate B will absorb it, so there is no chance that the items inside will be affected by electromagnetic waves. Moreover, since the buffer layer 5 has been subjected to antistatic treatment, there is no risk of the items inside becoming charged due to friction, etc., and furthermore, the reinforcing plate 4 prevents them from being bent or damaged by external force. It can be prevented.

Since the present invention is as described above, it is suitable as a mailing envelope or storage bag for sheet-like items such as floppy disks that are susceptible to electromagnetic waves and lines of magnetic force.

[Brief explanation of drawings]

Figure 1 is a partially cutaway front view of the electromagnetic shielding bag of the present invention, Figure 2 is an enlarged cross-sectional view of the bag of the present invention, and Figure 3 is an enlarged cross-sectional view of an example of the electromagnetic shielding plate used in the present invention. It is. 1... Iron foil, 2, 3... Adhesive layer, 4... Reinforcement plate, 5... Buffer layer, A... Outer bag, B... Electromagnetic wave shielding plate.

Claims (1)

[Scope of utility model registration request] An ordinary paper bag is used as the outer bag, and inside it, iron,
An electromagnetic shielding plate made by pasting a reinforcing plate made of thick cardboard on one side of a metal plate or metal foil made of ferromagnetic metal such as nickel, and pasting a buffer layer with antistatic treatment on the other side. An electromagnetic wave shielding bag characterized in that it is formed into a flat box shape with the buffer layer inside, or is folded in half and placed inside.