JPH07125787A - Magnetic disk package and packaging method - Google Patents

Abstract

PURPOSE:To provide a magnetic disk package which can prevent the positional shift of the magnetic disks in transit, particularly in the circumferential direction when they rotate, and which has a good operational efficiency in packaging and unpacking. CONSTITUTION:A tubular container 10 for packaging magnetic disks by stacking therein a predetermined number of flexible magnetic disks 20 has inserted into a cylindrical gap part defined by the center holes of the stacked magnetic disks a cylindrical positional shift preventing member 40 of the magnetic disks consisting of a cushioning material having a diameter larger in at least free condition than that of the aforesaid gap part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible magnetic disk packaging body and a packaging method, and more particularly, it is easy to perform packaging and unpacking work without a positional deviation between a predetermined number of stacked magnetic disks. Magnetic disk package and packaging method.

[0002]

2. Description of the Related Art A flexible magnetic disk called a floppy disk is generally a magnetic recording layer formed by applying a magnetic coating on a wide and long flexible substrate such as a polyester film and drying it to form a magnetic recording layer. After being calendered and wound up on a roll, a roll having a width according to the disk size and, if necessary, a product width is formed into a roll, and then punched into a disk with a puncher to manufacture.

This stamped magnetic disk is
About 1,000 sheets are stacked to form a handling unit, which is called a punched cookie.

Punched cookies are generally stored in a cylindrical container, stored or transported, and then processed into products such as polishing.

Such a punched cookie is conventionally stored in a container having a cushion layer on the upper and lower sides, for example, during storage or transportation. Another method is shrink wrapping.

[0006]

However, in a package in which a predetermined number of flexible magnetic discs are pressed into the container from above and below by the upper and lower cushion layers, the positional displacement between the magnetic discs due to vibration and impact force during transportation. , In particular, a positional deviation in the circumferential direction occurs due to the rotation of the magnetic disk, rubbing between media, or inviting the movement of intervening dust,
It was found that these damage the magnetic disk.
The scratches on the magnetic disk result in a recording or reproducing error when the magnetic disk is used, or even if the error does not occur, the quality of the magnetic disk deteriorates, and the yield of the magnetic disk product decreases. Further, the shrink wrapping method requires equipment for that purpose, and unpacking work at the destination is complicated.

Therefore, according to the present invention, the positional deviation between the magnetic disks, particularly the positional deviation in the circumferential direction due to the rotation of the magnetic disks does not occur. Therefore, the product yield is high, and at the time of packaging and unpacking. An object of the present invention is to provide a package and a packaging method for punched cookies having good workability.

[0008]

According to the present invention, a magnetic container is formed on a flexible substrate, and a predetermined number of magnetic disks (hereinafter, simply referred to as disks) having an inner hole at the center are stacked to form a cylindrical container. A stored magnetic disk package, wherein the magnetic disk package has a columnar gap formed by an inner hole of the magnetic disk, and a position deviation preventing member for preventing a position difference between the magnetic disks is attached to the magnetic disk package. The present invention provides a magnetic disk packaging body characterized by the above.

According to the present invention, a magnetic layer is formed on a flexible substrate, and a predetermined number of magnetic disks each having an inner hole in the center are stacked and housed in a cylindrical container, and then the stacked magnetic disks are stacked. The present invention provides a method for packaging a magnetic disk, characterized in that a positional deviation prevention member for preventing positional deviation between the magnetic disks is inserted into a cylindrical void formed by an inner hole in the central portion.

[0010]

According to the present invention, the displacement preventing member for preventing the displacement of the discs from each other is inserted into the gap of the inner hole of the disc. The workability is good and the work can be easily automated. Among them, in the case of using the columnar body made of a cushioning material or the aggregate of fibrous materials for the displacement prevention member, the disc is constrained by the radial repulsion force on the entire circumferential surface of the inner holes of all the discs. It is possible to effectively prevent the positional deviation between the disks.

[0011]

EXAMPLES Details of the present invention will be described based on examples.
FIG. 1 is a schematic side cross-sectional view of a package showing one embodiment of the package of the present invention, and FIG. 2 is a cross-sectional view of the package shown in FIG.

The package of the present embodiment shown in FIGS. 1 and 2 has a cylindrical container body 10 having a flange 11 at the opening, and a bottom portion having a hole having a diameter substantially equal to the inner hole of the disc at the center thereof. A cushion sheet 31 is laid, and then a punched cookie in which a predetermined number of disks 20 are stacked is accommodated therein, and a positional deviation prevention member 40 having a hard core material 42 at the center of the cushion portion 41 in the void of its inner hole And then the upper cushion sheet 32 is placed, and a lid 13 having protrusions 12 that engage with the flanges 11 of the container body 10 is fitted around the upper cushion sheet 32 at predetermined intervals.

Therefore, the whole punched cookie is pressed and held by the elastic force of the upper and lower cushion sheets 31 and 32, and frictionally held by the position deviation preventing member 40 at the center of each disk. However, the displacement is prevented from occurring. As described above, since the present invention can be packaged by a simple operation, the workability by hand is good, and the automation of the packaging operation is easy.

In the above package, the disk 20 is not particularly limited as long as it has a magnetic layer on a flexible substrate and has an inner hole at the center. Usually, it is manufactured by forming a magnetic layer on a flexible long substrate and then punching it into a disk shape having an inner hole in the center. Examples of the flexible substrate include films and sheets of synthetic resins such as polyester, polyimide and polyamide, and polyester films are usually used. Also,
The magnetic layer may be a coating type or a thin film type,
The magnetic substance and the magnetic thin film may be any known ones.
The size of the disk is not particularly limited, and it can be applied to all known 2 inches, 3.5 inches, 5.25 inches, 8 inches and the like.

The number of disks 20 in the package is preferably 100 or more, more preferably 300 to 1.00.
It is 0.

The body 10 of the cylindrical container is deep enough to accommodate the punched cookies composed of the above-mentioned number of discs, and the diameter thereof is large between the discs of the punched cookies during storage and removal. It is preferable that the package is as small as possible within the range where the misalignment is caused and the magnetic recording layer is not damaged and the punched cookie can be easily taken in and out, and the package is compact. The material is not particularly limited, but synthetic resins such as polystyrene, ABS and polyester are preferable because they are lightweight and easy to handle.

The displacement preventing member 40 may be any member that can be arranged in a cylindrical void portion formed by the inner hole of the disc and can prevent the displacement between the discs, and the flexible discs can be stacked. It is inserted into the cylindrical void of the inner hole of the disk formed to suppress the positional deviation between the disks and does not generate dust.
It is more desirable that the disk is not damaged and that the workability of packing and unpacking is good.

From this point of view, the positional deviation prevention member 4
A value of 0 is preferably a columnar body made of a cushion material having a diameter in the free state which is at least larger than the diameter of the cylinder formed by the void portion of the inner hole of the disk. If the diameter of the cylindrical body is at least larger than the diameter of the cylinder formed by the void portion of the inner hole of the disc, the columnar body is compressed and inserted into the void portion of the inner hole of the disc, that is, outward, that is, A repulsive force is generated in the radial direction of the disks, and the disks are restrained by this repulsive force, so that it is possible to prevent positional deviation between the disks. In addition, when the cushion material is used, it can be inserted and removed without noticing the damage of the disk, so that the workability is also good. The length of the cylindrical body is, of course, more than the height of the punched cookie for that purpose.

Such a columnar body may have a hard core portion 42 at the center of a cushion portion 41 that contacts the disk 20. These may be integrated in advance by bonding, fitting, or the like, or may be divided into the cushion portion 41 and the core portion 42. When divided,
There is an advantage that the disk can be easily worked during the packing and unpacking work without damaging the disk. The entire core including the core part 42 may be a cushion part. These are appropriately selected depending on the cushion material used. For example, in the case of a soft cushion material such as sponge, it is preferable that it is integrated with the core portion by adhesion, fitting, etc. from the viewpoint of workability, and when a relatively hard elastic material such as rubber material is used as the cushion material. The core material can be omitted.

As the cushion material forming the positional deviation preventing member 40, a well-known cushion material, that is, various elastic materials can be used. For example, plastic foam such as polyurethane foam and polyethylene foam,
Examples thereof include rubber such as NBR, artificial leather or synthetic leather. Further, examples of the core material include plastic and paper.

A lump aggregate of fibrous materials such as polyester and polyamide, for example, a loose wound body of polyester bristles having an appropriate size can also be used as the positional deviation preventing member 40.

In order to prevent dust generation, such a displacement prevention member 40 may be covered with a thin film around its periphery. Examples of such a film include plastic films such as polyester, polyamide, polyethylene, polypropylene, polyvinyl alcohol, vinyl chloride and vinylidene chloride, and cellophane. In order to effectively transfer the outward repulsive force from the positional deviation preventing member 40 to the disc, it is more preferable that the film has a large coefficient of static friction on the surface.

The position deviation preventing member 40 of the present invention is inserted and
As described above, since the member is preferably a columnar body or an agglomerate of fibrous materials made of a cushion material having a diameter in the free state at least larger than the diameter of the void portion, these are, of course, This is achieved by inserting the diameter once compressed to be smaller than the diameter of the void portion, or by pushing while inserting the large diameter.

In this embodiment, the position shift prevention member 4
The lower cushion sheet 31 having a hole having a diameter substantially equal to the diameter of the inner hole of the disk is used for easy insertion of 0, but the misalignment prevention member 40 and the punched cookie are pressed from above and below. Therefore, it is preferable that the hole does not have such a hole from the viewpoint of integrally controlling, and it is appropriately selected according to the cushion material to be used. This point is the upper cushion sheet 32
Is the same.

[0025]

INDUSTRIAL APPLICABILITY The present invention prevents the positional deviation between the disks during transportation, especially the positional deviation in the circumferential direction due to the rotation of the disks. Therefore, the product yield is high, and the packing and unpacking workability is high. It is possible to provide an excellent package and packaging method.

[Brief description of drawings]

FIG. 1 is a schematic view of a side cross section of a package, showing one embodiment of the package of the present invention.

FIG. 2 is a sectional view taken along the line AA ′ of FIG.

[Explanation of symbols]

 10 Cylindrical Container (Main Body) 20 Disk 31 Lower Cushion Sheet 32 Upper Cushion Sheet 40 Position Displacement Prevention Member 41 Cushion Part 42 Core Part

Claims (5)

[Claims] 1. A magnetic disk package in which a magnetic layer is formed on a flexible substrate and a predetermined number of magnetic disks each having an inner hole in the center are stacked and housed in a cylindrical container, the magnetic disk package comprising: A magnetic disc package, wherein a positional deviation prevention member for preventing positional deviation between the magnetic disks is inserted into a cylindrical void formed by an inner hole of the magnetic disk. 2. The magnetic disk package according to claim 1, wherein the misregistration preventing member is a columnar body made of a cushion material having a diameter in its free state at least larger than a diameter of the void portion. 3. The magnetic disk package according to claim 2, wherein the columnar body is a cushioning material having a hard core material in the central portion. 4. The magnetic disk package according to claim 1, wherein the misregistration preventing member is made of a lump aggregate of fibrous material, the volume of the free state of which is at least larger than the volume of the void portion. 5. A magnetic layer is formed on a flexible substrate, and a predetermined number of flexible magnetic disks each having an inner hole at the center are stacked and housed in a cylindrical container, and then the stacked magnetic disks are centered. A method for packaging a magnetic disk, comprising inserting a positional deviation prevention member for preventing positional deviation between the magnetic disks into a cylindrical void formed by the inner hole of the magnetic disk.