JPH07330063A - Hard disk package - Google Patents

Abstract

PURPOSE:To prevent dust and dirt accompanying with a movement of a hard disk case in a clean packaging bag from generating by a method wherein the inside of the clean packaging bag is vaccumized to deaerate, and the hard disk case in which a hard disk is contained is tightly joined to the internal surface of the clean packaging bag. CONSTITUTION:A hard disk package 1 is constituted in such a manner that a hard disk case 3 is sealed in a clean packaging bag 2 wherein a clean surface is formed, and at the same time, a plurality of hard disks 4 are stored in the hard disk case 3. Then, the inside of the packaging bag 2 is vaccumized to deaerate, and the hard disk case 3 is tightly joined to the internal surface of the clean packaging bag 2. Thus, dust and dirt accompanying with a movement of the hard disk case 3 in the clean packaging bag 2 are prevented from generating. In the meantime, the clean packaging bag 2 is formed of a clean film 10 for packaging with a base material part 7 consisting of a heat seal layer 5 and base material film layer 6, and internal and external both side protective film layers 8, 9 which are laminated on both sides of the heat seal layer 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk package for accommodating a hard disk that is extremely reluctant to attach dust and dirt.

[0002]

2. Description of the Related Art A hard disk used as a recording medium for a computer uses aluminum or glass as a substrate. The product is greatly affected by surface contamination, dust adhesion, and corrosion, so that the contamination and dust adhesion is prevented. Careful attention is paid to the transportation so as not to occur.

In order to transport hard disk substrates to a processing manufacturer, a plurality of hard disk substrates are housed in a plastic hard disk case in a sealed state, and the hard disk case housing the hard disk boards is placed in a plastic soft packaging material. It is transported as a hard disk package that is lightly degassed and sealed. In this case, as the soft plastic packaging material, a packaging material free of dust and dust is required, and therefore, a packaging material which is washed with ultrapure water and is produced in an integrated manner in a clean room is used.

In order to prevent the clean room from being contaminated by dust and dirt adhering during transportation, double packaging is performed in which the hardened air-sealed hard disk package is further hermetically sealed with an outer bag, and the outer bag has a moisture barrier. When the property is insufficient, a hygroscopic agent is enclosed inside the outer bag.

[0005]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention In a hard disk package in which a hard disk case accommodating a hard disk substrate is placed in a plastic soft packaging material, the plastic soft packaging material is molded by the packaging material manufactured in a clean room. The quality of the material is not stable, and
In this case, it is necessary to wash the packaging material with ultrapure water, which causes a problem of high manufacturing cost.

Further, in a double-packed hard disk package in which a hard disk case packaged in a plastic soft wrapping material is hermetically sealed with an outer bag, a process of manufacturing the outer bag and enclosing the hard disk package in the outer bag is required. However, there is a problem that the manufacturing cost is high.

The present invention has been made in consideration of the above points. By forming a clean surface on the clean packaging bag, the cleaning means with ultrapure water for the clean packaging bag is not required, and the cost is reduced. An object of the present invention is to provide a hard disk package that prevents dust from being generated due to movement of the hard disk case in the clean packaging bag.

[0008]

A hard disk package of the present invention has a pair of packaging clean films consisting of a base portion having a heat-sealing layer on the inside thereof, and the base portion has a protective film layer peeled off. It is equipped with a clean packaging bag that forms a clean surface, a hard disk case sealed in this clean packaging bag, and a hard disk housed in this hard disk case. It is constructed by closely adhering to the packaging bag.

In the hard disk package of the present invention, the protective film layer is laminated on the inner side of the base material to make the heat seal layer a clean surface, and the protective film layer is laminated on the outer side of the base material. The outer surface of the part is the clean surface.

[0010]

In the hard disk package of the present invention, the protective film layer is peeled off to form a clean surface on the clean packaging bag, thereby eliminating the need for cleaning the clean packaging bag with ultrapure water, thereby removing the hard disk case from the clean packaging bag. This prevents the dust from being generated when the hard disk case moves inside the clean packaging bag.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a hard disk package according to the present invention. The hard disk package 1 includes a clean packaging bag 2 having a clean surface, and a hard disk case 3 sealed in the clean packaging bag 2. , A plurality of hard disks 4 housed in the hard disk case 3, and the hard packing case 2 is vacuum-deaerated to clean the hard disk case 4 into the clean packing bag 2.
By closely contacting the inner surface of the hard disk case, dust is prevented from being generated as the hard disk case moves inside the clean packaging bag.

As shown in FIG. 2, the clean packaging bag 2 has a base portion 7 composed of a heat seal layer 5 and a base film layer 6, and an inner side of the base portion 7 laminated on the heat seal layer 5. It is formed from a protective film layer 8 and a clean packaging film 10 including an outer protective film layer 9 laminated on the surface of the base material portion 4 opposite to the heat seal layer 5. The heat-sealing layer 5 of the base member 7 is, for example, a 70-micron-thick laminated low-density polyethylene film having a thickness of 20 microns, a medium-density polyethylene film having a thickness of 30 microns, and a low-density polyethylene film having a thickness of 20 microns. The base film layer 6 is a polyethylene layer, and for example, the polyethylene terephthalate film having a thickness of 12 μm and the thickness of 2 μm having a thickness of 15 μm, which are deposited with silicon oxide.
It is an axially stretched nylon film. The inner protective film layer 8 is, for example, an unstretched polypropylene film having a thickness of 60 microns, and the outer protective film layer 9 is, for example, a medium density polyethylene film having a thickness of 60 microns and a low density polyethylene having a thickness of 20 microns. An 80 micron thick polyethylene layer laminated with a film. As shown in FIG. 2, the inner protective film layer 8 of the packaging clean film 10 is peeled off at the stage of manufacturing the clean packaging bag 2. As shown in FIG. 3, the outer protective film layer 9 is peeled off at a stage after the hard disk package in which the hard disk case 3 in which the hard disk 4 is housed in the clean packaging bag 2 is enclosed is transported to the destination.

FIG. 4 shows a packaging bag manufacturing apparatus for making the clean packaging bag 2 from the packaging clean film 10. The packaging bag manufacturing apparatus 11 is a clean chamber 12 cleaned to a class of about 100 (0.5 μm). And this clean room 12
Protective film layer peeling rolls 13 and 13, a pair of pressing rolls 14, a flow direction heat sealing device 15, a width direction heat sealing device 16 and a cutting device, which are arranged in order from the upstream side inside, and are arranged on the upstream side of the clean chamber 12. It is composed of a pair of paper feeding units 18 and 19 and winding rolls 20 and 20 for winding the peeled protective film layer.

To make the clean packaging bag 2 from the packaging clean film 10, the packaging clean film 1 is used.
0 and 10 are attached to the pair of paper feed units 18 and 19, and the packaging clean films 10 and 10 pulled out from the pair of paper feed units 18 and 19 are guided to the peeling rolls 13 and 13, and the peeling rolls 13 and 13 are provided. In, the inner protective film layer 8 is peeled off from the packaging clean film 10. The inner protective film layer 8 peeled off by the peeling roll 13 is wound around the winding roll 20.

A pair of clean films 10 for packaging, in which the inner protective film layer 8 has been peeled off to form a clean surface on the heat seal layer 5, are stacked on top of each other with the heat seal layer 5 inside and are transferred to the clean chamber 12. Sent. A pair of packaging clean films 10 sent into the clean chamber 12,
10 are pressed against each other by a pressing roll 14, and then both side portions are heat-sealed to each other by a flow direction heat sealing device 15 to form a tubular portion, and then a width direction heat sealing device 16 is applied to each other in the width direction. Heat sealed. The pair of heat-sealing clean films 10 for packaging are cut by the cutting device 17 so that one side is opened, and the three-sided heat-sealed clean packaging bag 2 is produced. It is also possible to make the clean packaging bag 2 with one end opened by heat sealing four sides of the pair of packaging clean films 10, 10 and then cutting one of them with the cutting device 17 to provide an opening.

The clean packaging bag 2 thus obtained
Is composed of a pair of packaging clean films 10, 10 from which the inner protective film layer 8 has been peeled immediately before the clean chamber 12, so that the inner surface of the clean packaging bag 2 is kept clean. The clean packaging bag 2 is then put together, stored in a separately prepared clean large bag (not shown), and shipped.

In order to make a hard disk package by enclosing the hard disk case 3 containing a plurality of hard disks 4 in the clean packaging bag 2, the open end of the clean packaging bag 2 is opened as shown in FIG. The stored hard disk case 3 is inserted into the clean packaging bag 2 in the direction of the arrow.

Next, as shown in FIG. 6, the clean packaging bag 2 containing the hard disk case 3 is blown with dry clean nitrogen gas through a gas filter having a pore size of about 0.1 micron to clean the packaging bag 2. The air between the hard disk case 3 and the hard disk case 3 is replaced with nitrogen gas. This lowers the initial humidity inside the clean packaging bag 2.

Next, as shown in FIG. 7, the clean packaging bag 2 containing the hard disk case 3 replaced with nitrogen gas is sent to the degassing / sealing device, where the clean packaging bag 2 and the hard disk case 3 are separated. The nitrogen gas in the gap is sucked to bring the clean packaging bag 2 and the hard disk case 3 into close contact with each other, and then the open end of the clean packaging bag 2 is heat-sealed by the heat seal bar 21 as shown in FIG. The hard disk package 1 shown in FIG.

The hard disk package 1 thus formed is carried into a clean room for manufacturing a hard disk through a normal transportation route, and the outer protective film layer 9 is peeled from the clean packaging bag 2 immediately before carrying in.

In the above-mentioned embodiment, the packaging clean film 10 has the protective layer provided on both sides of the base film layer, but the protective film is provided on one side of the base film layer. Good.

FIG. 10 is a graph showing changes in relative humidity of the hard disk package 1 according to the present invention. In the figure, the experimental values of the hard disk package according to the present invention are represented by the symbols a and b.
The experimental values of the comparative product (a hard disk package in which a hard disk is put in a double bag) are shown by symbols c and d.

Experimental conditions Sample of the present invention Packaging bag A polyethylene film having a thickness of 80 microns and a base film layer (a polyethylene terephthalate film having a thickness of 12 microns deposited with silicon oxide and a biaxially stretched nylon film having a thickness of 15 microns) 70 micron thick polyethylene film.

Comparative product Packaging bag The inner bag is a polyethylene film with a thickness of 80 micron and a nylon film with a thickness of 40 micron, and the outer bag is a polyethylene film with a thickness of 100 micron, and is placed between the inner bag and the outer bag. A desiccant is included.

Measurement conditions Temperature 40 ° C., 90% relative humidity Experimental results In the product of the present invention, the relative humidity of the inside of the bag was 80 after 60 days.
However, in the comparative product, the relative humidity inside the bag became about 80% after 15 days.

[0027]

As described above, according to the present invention, since the clean surface of the clean packaging bag is formed by peeling off the protective film layer, the means for cleaning the clean packaging bag with ultrapure water becomes unnecessary, Since the hard disk case and the clean packaging bag are brought into close contact with each other by vacuum degassing the inside of the clean packaging bag, it is possible to prevent generation of dust due to movement of the hard disk case in the clean packaging bag. Further, when the management barcode or the like is attached to the hard disk case, the management barcode or the like can be read from the outside.

[Brief description of drawings]

FIG. 1 is a perspective view of a hard disk package according to the present invention.

FIG. 2 is a diagram showing a part of a packaging clean film.

FIG. 3 is a view showing a state in which an external protective layer is peeled off from a clean packaging bag according to the present invention.

FIG. 4 is a diagram showing an apparatus for manufacturing a clean packaging bag.

FIG. 5 is a diagram showing a first stage of a manufacturing process of a hard disk package according to the present invention.

FIG. 6 is a diagram showing a second stage of the manufacturing process of the hard disk package according to the present invention.

FIG. 7 is a diagram showing a third stage of the manufacturing process of the hard disk package according to the present invention.

FIG. 8 is a diagram showing the final stage of the manufacturing process of the hard disk package according to the present invention.

FIG. 9 is a sectional view of a hard disk package according to the present invention.

FIG. 10 is a graph showing changes in relative humidity inside the bag of the hard disk package.

[Explanation of symbols]

 1 Hard Disk Package 2 Clean Packaging Bag 3 Hard Disk Case 4 Hard Disk Base Material 5 Heat Seal Layer 6 Base Film Layer 7 Base Material 8 Inner Protective Film Layer 9 Outer Protective Film Layer 10 Clean Film for Packaging

Claims (3)

[Claims] 1. A clean packaging bag having a pair of clean films for packaging comprising a base material portion having a heat-sealing layer on the inside thereof, wherein the base material portion peels off a protective film layer to form a clean surface, and the clean packaging bag. A hard disk package including a hard disk case hermetically sealed in a packaging bag and a hard disk housed in the hard disk case, and vacuum degassing the clean packaging bag to bring the hard disk case into close contact with the clean packaging bag. 2. The hard disk package according to claim 1, wherein the protective film layer is laminated on the inside of the base material portion. 3. The hard disk package according to claim 1, wherein the protective film layer is laminated on both the outer side and the inner side of the base material portion.