KR20100068336A - Glass substrate packing box - Google Patents

Abstract

Provided is a glass substrate packing box in which a cover can be surely fitted to a box body even if a resin molded product having a low dimensional accuracy molded by a bead foaming method is used as the box body and the cover, and glass substrates can be stacked with no improper stress acting onto the glass substrates. The glass substrate packing box (1) comprises the box body (2) opened at its upper end and the cover (3) that is fitted to the box body (2) and closes the upper end opening. The glass substrates (G) are vertically arranged in parallel to each other at intervals therebetween by holding grooves (4a, 5a) in glass holding parts (4, 5) provided on the box body (2) and the holding grooves (6a) of glass holding parts (6) provided on the cover (3). A spacer (7) having elasticity higher than that of the glass holding parts (6) is interposed between the cover (3) and the glass holding parts (6) provided on the cover (3).

Description

Glass substrate packing box {GLASS SUBSTRATE PACKING BOX}

The present invention relates to a glass substrate packing box for packing in a state in which a plurality of glass substrates are arranged in parallel in a vertical position at intervals.

As is well known, high cleanliness is often required for various glass substrates in recent years, as represented by glass substrates for flat panel displays such as liquid crystal displays, plasma displays, electroluminescent displays, field emission displays, and the like. . Therefore, when packing these glass substrates, the closed type glass plate packaging box may be used from a viewpoint of maintaining the cleanliness of a glass substrate, such as preventing the foreign matter, such as dust, from adhering to a glass substrate.

As this kind of glass plate packing box, for example, as disclosed in Patent Document 1 below, a box body (box body) having an upper end opened, and a lid fitted to the box body and closing the upper opening A sieve is used, and a plurality of glass substrates are held in parallel in a vertical posture in an internal space formed by fitting a lid to the box body.

In detail, the box body has a glass substrate holding portion for holding the lower side and both sides of the individual glass substrate, and the glass substrate by inserting the glass substrate into a plurality of holding grooves formed in the glass substrate holding portion. The peripheral edge of is maintained. Moreover, the glass substrate holding part which has a some holding groove similarly is arrange | positioned also in a cover body, and is to hold the upper side, or the upper side, and both sides of an individual glass substrate.

Patent Document 1: Japanese Patent Application Laid-Open No. 2004-51131

[0005] By the way, as disclosed in Patent Document 1, the box body and the lid are filled with a polyolefin-based beads or primary foam thereof containing a blowing agent in a mold and heated at a predetermined temperature. The molded resin molded article is mostly used. This is because the resin molded article molded by the bead foaming method is lighter and richer in cushioning properties than the resin molded article molded by injection molding, and the cost of the mold and the resin itself is low.

However, on the one hand, the box body and the cover body molded by the bead foaming method has the drawback that the dimensional accuracy is poor compared to the molded by injection molding, the height direction dimension of one or both of the box body and the cover body It may become smaller than a predetermined dimension. Therefore, in such a case, a situation may occur in which the upper side of the glass substrate contacts the glass holding part of the lid before fitting the lid to the box body, and thus the two bodies cannot be completely fitted while the lid is lifted up against the box body. have. That is, the situation where the lid | cover body is supported in the state lifted by the glass substrate may arise.

In recent years, in the case of using the hermetically sealed glass substrate packaging box from the viewpoint of improving the storage efficiency, a form in which the glass substrate packaging box is stacked and stored in a state where the glass substrate is packed inside has been adopted. . Therefore, as described above, when both are not completely fitted in the state where the cover body is lifted up against the box body, the load of the upper glass substrate packing box directly acts on the glass substrate packed in the lower glass substrate packing box. There is a fear that breakage occurs in the glass substrate. When such a situation occurs, the glass piece or glass powder is scattered around the glass substrate where the breakage occurs, and a new scratch or breakage occurs on the glass substrate which has not yet been broken, or the glass powder adheres to the glass substrate. . Therefore, when even one sheet of glass causes damage, a fatal problem arises in that all glass substrates in the carton must be handled as defective products.

In view of the above circumstances, the present invention can reliably fit the lid to the box body even when a resin molded article having a poor dimensional accuracy molded by the bead foaming method or the like is used as the box body and the lid. It is a technical object of the present invention to provide a glass substrate packing box that can be stacked without imparting stress to a substrate.

In order to solve the above problems, the first glass substrate packing box according to the present invention has a box body having an upper end opened, and a cover body fitted to the box body to close the upper opening. The glass substrate packing which hold | maintains several glass substrate in the state arrange | positioned in parallel at intervals in a vertical position by the several holding groove of the glass holding part arrange | positioned at the main body, and the several holding groove of the glass holding part arrange | positioned at the said cover body. A box comprising a spacer having a higher elasticity than the glass holding portion between the lid and the glass holding portion disposed on the lid.

According to this configuration, even if the dimensional accuracy of the height of the box body or the cover body is bad, if the top of the glass substrate is in contact with the holding groove of the glass holding portion of the cover body further push the cover body toward the box body side glass Since the spacer itself, which is higher in elasticity than the holding part, is compressively deformed, it is possible to reliably fit the lid to the box body without applying useless stress to the glass substrate. That is, it is possible to prevent the situation in which the lid and the box body are not completely fitted, and the lid body is supported on the upper side of the glass substrate in the state of being lifted from the box body. Therefore, even when the glass substrate packing box which packed the glass substrate inside was piled up, the ratio which the load of the upper glass substrate packing box acts on the glass substrate packed inside the lower glass substrate packing box can be reliably reduced. Therefore, breakage of a glass substrate can be reduced as much as possible.

In the above-described configuration, it is preferable to form the spacer with a low-elasticity material.

In this case, when the cover member is fitted to the box body to compressively deform the spacer, the ratio at which the spacer is expanded by the elastic restoring force to the glass substrate side can be reduced. Therefore, the ratio which a stress acts on a glass substrate by a spacer can be reduced more reliably. In addition, since the spacer is formed of a low-elasticity material, the spacer has excellent shock absorbency and pressure dispersibility, so that even when an impact is applied to the glass substrate packaging boxes, the effect is less likely to occur on the glass substrate, resulting in breakage of the glass substrate. In view of preventing this is quite advantageous.

In order to solve the above problems, the second glass substrate packing box according to the present invention has a box body having an upper end opened, and a cover body fitted to the box body to close the upper opening. The glass substrate packing which hold | maintains several glass substrate in the state arrange | positioned in parallel at intervals in a vertical position by the several holding groove of the glass holding part arrange | positioned at the main body, and the several holding groove of the glass holding part arrange | positioned at the said cover body. The box is characterized in that the glass holding portion disposed on the lid is collapsed by an upper side of the glass substrate by a load from above and elastically deformed into a concave shape to form the plurality of holding grooves.

According to such a configuration, the glass holding portion is crushed by the upper side of the glass substrate and elastically deformed into a concave shape, the portion elastically deformed into the concave shape becomes a retaining groove, so the dimensional accuracy of the height of the box body or the lid body Even in the case of poor quality, the groove depth (dimension from the peak of the groove to the curved portion) of the retaining groove is adjusted in response to the deviation of the dimension. Therefore, it becomes possible to reliably fit a cover body with respect to a box main body. Therefore, even when the glass substrate packing box which laminated | stacked the glass substrate inside was laminated | stacked, since the ratio which the weight of the glass substrate packing box of the upper part acts on the glass substrate packed inside the glass substrate packing box of the lower part certainly reduces, glass Breakage of the substrate can be reduced as much as possible.

In this case, it is preferable to form the glass holding part arranged in the said lid body from a low-elasticity material.

In this way, the effects described in the above-mentioned paragraph [0012] can be similarly exhibited.

In order to solve the above problems, the third glass substrate packing box according to the present invention has a box body having an upper end opened, and a cover body fitted to the box body to close the upper opening. The glass substrate packing which hold | maintains several glass substrate in the state arrange | positioned in parallel at intervals in a vertical position by the several holding groove of the glass holding part arrange | positioned at the main body, and the several holding groove of the glass holding part arrange | positioned at the said cover body. In a box, the glass holding part provided in the said lid | cover was formed from the low-elasticity material which has a some holding groove beforehand. It is characterized by the above-mentioned.

According to this configuration, even if the dimensional accuracy in the height direction of the box body or the lid is bad, if the top of the glass substrate is in contact with the holding groove of the glass holding portion of the lid further push the lid further toward the box body side Since the glass holding part formed from the repellent material is compressively deformed, it is possible to reliably fit the lid to the box body. That is, it is possible to prevent the situation in which the lid and the box body are not completely fitted, and the lid body is supported on the upper side of the glass substrate in the state of being lifted from the box body. Therefore, even when the glass substrate packing box which packed the glass substrate inside was piled up, since the ratio which the weight of the glass substrate packing box of the upper acts on the glass substrate packed inside of the glass substrate packing box of the lower part acts reliably reduces, glass Breakage of the substrate can be reduced as much as possible. In addition, the effect described in paragraph [0012] derived from the low-elasticity material can be similarly exhibited.

In the above-described configuration, it is preferable that the low-elasticity material is a flexible polyurethane foam, and in particular, in view of impact absorption, the first type LB or the second type LM of the load-resistant flexible polyurethane foam described in JIS K6401: 2005. It is preferable to belong to.

Effect of the Invention

According to the present invention as described above, even when a resin molded article having a poor dimensional accuracy molded by the bead method or the like is used as the box body and the lid, the box body and the lid can be reliably fitted, It can be stacked without applying stress.

[0021]

1 is a perspective view illustrating a glass substrate packing box according to a first embodiment of the present invention.

FIG. 2A is a longitudinal cross-sectional view taken along the line A-A of FIG. 1.

(B) is a longitudinal cross-sectional view cut along the B-B line | wire of FIG.

It is a figure which shows the procedure of wrapping a glass substrate in the glass substrate packing box which concerns on 1st Embodiment.

FIG.3 (b) is a figure which shows the procedure of wrapping a glass substrate in the glass substrate packing box which concerns on 1st Embodiment.

FIG.3 (c) is a figure which shows the procedure of packing a glass substrate in the glass substrate packing box which concerns on 1st Embodiment.

It is a longitudinal cross-sectional view which expands and shows the principal part of the glass substrate packing box which concerns on 2nd Embodiment of this invention.

It is a longitudinal cross-sectional view which expands and shows the principal part of the glass substrate packing box which concerns on 2nd Embodiment of this invention.

<Explanation of symbols for the main parts of the drawings>

[0022]

1: glass substrate packing box 2: box body

3: cover body 4, 5, 6: glass holder

7: spacer 8: cotton fastener

G: glass substrate

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a perspective view schematically showing a glass substrate packing box 1 according to a first embodiment of the present invention. This glass substrate packing box 1 has an angled cylindrical box body 2 having a bottom with an open top, and an angle having a lid fitted to the upper end of the box body 2 to close the opening. An analgesic lid 3 is provided. The box body 2 and the lid 3 are formed of a polyolefin-based foam (for example, a copolymer of ethylene and propylene), and a bead foaming method is used as the molding method.

Inside the box body 2, as shown in Figures 1 and 2 (a), (b), the glass holding portion 4 for holding the lower side of the glass substrate (G) in the vertical posture bottom It is arrange | positioned at the same time, and the pair of glass holding parts 5 which hold both sides of the glass substrate G are arrange | positioned at the opposite side, respectively. Retaining grooves 4a and 5a are formed in each of the glass holding portions 4 and 5 so as to follow the circumferential edge portion of the glass substrate G, and the glass substrate G is inserted into the holding grooves 4a and 5a. The peripheral edge part of glass substrate G is hold | maintained by doing this. The glass holders 4 and 5 are made of a polyolefin-based foamed resin such as the box body 2, and are mounted by integrally forming with the box body 2, or after being molded separately, or the box body. It is attached by attaching detachably to (2).

In addition, in this embodiment, the glass holding part 4 which maintains the lower side of the glass substrate G is spaced apart along the lower side of the glass substrate G (3 in the example shown at the same interval) It is arrange | positioned, and the lower side of glass substrate G is hold | maintained intermittently.

On the other hand, the glass holding part 6 in which the some holding | maintenance groove 6a which hold | maintains the upper side of the glass substrate G is arrange | positioned similarly to the box main body 2 inside the lid | cover body 3 is arrange | positioned. The spacer 7 is interposed between the upper surface of the glass holder 6 and the lower surface of the lid 3 in a state of being in contact with both sides. The spacer 7 is formed of a low-elasticity material having a higher elasticity than the glass holder 6, specifically, a flexible polyurethane foam having a thickness of about 20 mm. As this flexible polyurethane foam, it is preferable to belong to a 1st class LB or 2nd class LM among the soft polyurethane foam for load-bearing described in JISK6401: 2005. This is due to the reason that the resilient modulus is 15% or less (JIS K6400-3), and the shock absorbency is excellent in load-resistant flexible polyurethane foam belonging to the first class LB or the second class LM.

The spacer 7 and the glass holder 6 are fixed by adhesion, etc., the spacer 7 and the lid 3 are detachably mounted by the male surface fastener 8 mounted on both sides. It is.

In addition, in this embodiment, the glass holding | maintenance part 6 which maintains the upper side of the glass substrate G is separated by the space | interval along the upper side of the glass substrate G (3 in the example shown at the same interval) It is arrange | positioned and is made to hold | maintain the upper side of glass substrate G intermittently. At this time, the spacer 7 may be divided so as to support the glass holder 6, respectively.

Next, the packing procedure of the glass substrate using the glass substrate packing box 1 comprised as mentioned above is demonstrated.

First, as shown in FIG. 3 (a), both sides of the glass substrate G in the vertical posture are inserted into the holding grooves 5a of the glass holding part 5 inside the box body 2. In addition, the lower side is pushed down until it is inserted into the holding groove 4a of the glass holding part 4. The same procedure is repeated about the other glass substrate G, and is accommodated in the state in which several glass substrates G were arranged in parallel in the vertical position inside the box main body 2.

Next, as shown in Figure 3 (b), the glass holding portion 6, the spacer 7 is fixed to the upper surface on the upper side of the plurality of glass substrates (G) accommodated inside the box body (2) ) Retaining groove 6a. In this way, when fitting the holding groove 6a of the glass holding part 6 to the upper side of the glass substrate G, work can be advanced, confirming the fitting state, without interrupting the cover body 3. Therefore, the attachment work of the glass holding part 6 can be performed efficiently.

Then, after fitting the upper side of each glass substrate (G) in the holding groove 6a of the glass holding part 6, as shown in Figure 3 (c), on the spacer 7 The cover 7 is covered and the surface fastener 8 of the cover 3 is bonded to the face fastener 8 of the spacer 7 shown in FIG. Combine with each other. In this way, when taking out the glass substrate G from the inside of the glass substrate packing box 1, the spacer 7 and the glass holding part 6 are separated simultaneously at the same time only by pulling up the cover 3 upwards. As a result, the drawing operation can be performed efficiently.

On the other hand, the box body (2) and the cover body (3) molded by the bead foaming method has the advantages of being lightweight and rich in cushioning properties, while the dimensional accuracy is bad, the box body (2) and the cover body ( The height direction dimension of one or both of 3) may become smaller than a predetermined value. And in such a case, the lid | cover 3 is floated with respect to the box main body 2. As shown in FIG. In other words, if no countermeasures are taken in this state, the lid 3 is supported in the lifted state by the glass substrate G, and thus the glass substrate packaging box at the bottom when the glass substrate packaging box 1 overlaps up and down. The glass substrate G packed in (1) may be damaged by the load of the glass substrate packing box 1 of the upper end.

Therefore, in order to cope with such a problem, in the present embodiment, as described above, the spacer 7 is formed of a flexible polyurethane foam having a higher elasticity than the glass holder 6. That is, as shown in FIG.3 (c), when the cover body 3 is further pushed down from the state which the cover body 3 floated with respect to the box main body 2, the spacer 7 itself will compressively deform, and FIG. As shown to 2 (a), (b), the lid 3 can be reliably fitted to the box main body 2. Therefore, even when the other glass substrate packaging box 1 which packed the glass substrate G was piled up and stored on the glass substrate packaging box 1 which packaged the glass substrate G, the lower glass substrate packaging box ( As described above, the lid 3 and the box body 2 of 1) are in a completely fitted state, and thus the upper glass substrate on the glass substrate G packed on the lower glass substrate packing box 1. The load of the packing box 1 can be prevented from directly acting.

In addition, since the spacer 7 is formed of a soft polyurethane foam that is a low-elasticity material, the spacer 7 has excellent shock absorbency or pressure dispersibility and thus impacts on stacking the glass substrate packing box 1. Even if this is applied, the influence becomes less likely to occur in the glass substrate G.

4 (a) and 4 (b) are longitudinal cross-sectional views showing an enlarged main part of the glass substrate packing box 1 according to the second embodiment of the present invention. The glass substrate packing box 1 according to the second embodiment differs from the glass substrate packing box 1 according to the first embodiment in the glass holding part 6 itself disposed in the lid 3. It is in the point which was formed from the low repulsion material. That is, the board-shaped low-elasticity material (specifically, a flexible polyurethane foam) is detachably attached to the inside of the cover body 3 by the cotton fasteners 8 and 8. As shown in FIG. And, as shown in Fig. 4 (a), the lid 3 in the step in which the upper side of the glass substrate (G) arranged in parallel in the vertical posture in contact with the glass holding portion 6 in the box body (2). 4), the glass holding part 6 is crushed by the upper side of the glass substrate G and elastically deformed into a concave shape, as shown in FIG. 4 (b). The holding groove 6a is formed by this.

In this case, since the thickness of the glass holding part 6 and the groove depth of the holding groove 6a are automatically adjusted according to the amount pushed down below the lid 3, as described above, Even when the height direction dimensions of the box main body 2 and the lid 3 differ from the predetermined dimension, the lid 3 can be reliably fitted to the box main body 2. At this time, the glass holding part 6 may be divided | segmented in the direction according to the upper side of the glass substrate G in the state which hold | maintained the upper side of the arranged glass substrate G. As shown in FIG.

In addition, this invention is not limited to the said embodiment at all, In the range which does not deviate from the summary of this invention, it can also be implemented in various forms. For example, in the said 1st, 2nd embodiment, a low repulsion material (specifically, a flexible polyurethane foam) is laid under the glass holding part 4 arrange | positioned at the bottom face of the box main body 2, or glass The holding part 4 itself may be formed of a low-elasticity material.

In addition, in the first and second embodiments, the case where only the upper side of the glass substrate G is held by the glass holder 6 of the lid 3 is explained. You may arrange | position the glass holding part which hold | maintains both sides separately to the cover body 3.

In addition, although the case where the holding groove 6a was formed later by deformation of the glass holding part 6 was demonstrated in the said 2nd embodiment, you may form the holding groove 6a beforehand.

Claims (6)

A box body having an upper end opened, and a lid fitted to the box body to close the upper opening; The glass which hold | maintains several glass substrates in the state arranged in parallel at intervals in a vertical position by the some holding groove of the glass holding part arrange | positioned at the said box main body, and the some holding groove of the glass holding part arrange | positioned at the said lid | cover body. In the substrate packing box: A glass substrate packaging box comprising a spacer having a higher elasticity than the glass holding portion between the lid and the glass holding portion disposed on the lid. The method of claim 1, The said substrate was formed of the low repulsion material, The glass substrate packing box characterized by the above-mentioned. A box body having an upper end opened, and a lid fitted to the box body to close the upper opening; The glass which hold | maintains several glass substrates in the state arranged in parallel at intervals in a vertical position by the some holding groove of the glass holding part arrange | positioned at the said box main body, and the some holding groove of the glass holding part arrange | positioned at the said lid | cover body. In the substrate packing box: The glass holding | maintenance part arrange | positioned at the said cover body is comprised so that it may be crushed by the upper side of a glass substrate by the load from upper direction, and will be elastically deformed in concave shape, and will form the said several holding groove. The method of claim 3, wherein The glass substrate packing box formed from the low repulsion material the glass holding part arrange | positioned at the said cover body. A box body having an upper end opened, and a lid fitted to the box body to close the upper opening; The glass which hold | maintains several glass substrates in the state arranged in parallel at intervals in a vertical position by the some holding groove of the glass holding part arrange | positioned at the said box main body, and the some holding groove of the glass holding part arrange | positioned at the said lid | cover body. In the substrate packing box: The glass holding | maintenance box provided in the cover body by previously formed with the low repulsion material which has a some holding groove. The method according to any one of claims 2, 4, or 5, A glass substrate packing box, wherein the low repulsion material is a flexible polyurethane foam.

Images