KR100798533B1 - Foaming box for substrate conveyer - Google Patents

Abstract

The foam box for transporting a substrate of the present invention is a polyolefin-based box main body 1 having a structure in which a substrate supporting groove 10A is formed on an inner wall facing each other, and a box main body 1 of a glass substrate 100. The support member 3 with the upper support groove 10B protecting the protruding portion, the lid 2 made of polyolefin-based foam, and the support member 3 and the lid 2 are provided so as to correspond to each other. Male and female fasteners 4a and 4b. This configuration protects the protruding portion from the box body of the glass substrate and prevents grooves from being generated when the cover body is covered with the box body in which the glass substrate is vertically inserted, and further, withdrawal of the glass substrate from the box. Operation can be performed automatically using a board | substrate extraction apparatus (unpacker).

Box body, interpolation member, cover body, inner surface, support member, horizontal plate

Description

Foaming box for substrate conveyer             

BRIEF DESCRIPTION OF THE DRAWINGS The whole perspective view of the foaming box for board | substrate conveyance in Embodiment 1 based on this invention.

2 is an overall longitudinal cross-sectional view of the foamed box for transporting a substrate in the first embodiment according to the present invention;

3 is an overall perspective view of a foam box for transporting a substrate according to another embodiment of the first embodiment of the present invention.

4 is a first enlarged perspective view showing a connection region provided between the support member and the inner wall surface of the lid according to the first embodiment of the present invention.

5 is a second enlarged perspective view showing a connection region provided between the support member and the inner wall surface of the lid according to the first embodiment of the present invention.

6 is a third enlarged perspective view showing a connection region provided between the support member and the inner wall surface of the lid according to the first embodiment of the present invention.

Fig. 7 is an overall perspective view showing the structure of a foam box for conveying a glass substrate in Embodiment 2 of the present invention.

FIG. 8 is a cross-sectional view corresponding to the VII-VII arrow in FIG. 7. FIG.                 

FIG. 9 is a cross-sectional view showing a configuration of a side support groove of a foam box for transporting a glass substrate in Embodiment 2 based on the present invention. FIG.

10 (a) to 10 (c) are cross-sectional views illustrating a step of manufacturing side support grooves of the foaming box for transporting a glass substrate in Embodiment 2 based on the present invention.

(Explanation of symbols for the main parts of the drawing)

1: box body 1a: interpolation member

2: cover 2a: inner surface

3: support member 3a: horizontal plate

3b: vertical plate 4a, 4b: face fastener

10A: substrate support groove 10B: upper support groove

100: glass substrate 201: glass substrate

210: foam box body 211: inner wall

212: side support groove 212a: groove

212b: Protective film (ultra high molecular weight polyethylene film)

213: bottom wall 214: bottom support groove

220: foam cover member 221: inner surface side

230: upper support member 231: upper support groove

241, 242: cotton fastener 200: foam box for conveying glass substrate

The present invention is a glass substrate (platelet glass, glass substrate for liquid crystal display, glass substrate for plasma display, fluorescent display tube, glass substrate for thermal head, color filter, etc.) or a finished panel manufactured using these glass substrates. It relates to a foam box for transporting a substrate for plural sheets and housed and transported.

(Conventional technology)

(Glass substrate transport box made of injection molded body and its problem)

Various materials including ABS resin and polyvinyl chloride for conveyance of glass substrates including glass makers, color filter makers, plasma display makers, device makers, and glass panels (including finished panels) using the glass substrates. The glass substrate conveyance box which consists of an injection molded object of resin and the granulated product of this injection molded object is used.

In the case of conveyance of the glass substrate which has assembled the circuit like the glass substrate in which the TFT (thin-film transistor) formation was completed, and the completed panel of a liquid crystal cell, the resin injection molded object containing the conductive polymer, an antistatic substance, etc., its resin The glass substrate conveyance box which consists of granules which used the injection molded object is used.

These glass substrate conveyance boxes typically consist of a box body with a bottom and a lid body, and a plurality of plates in which the box bodies face each other are arranged in parallel so as to keep the glass substrates in parallel so as not to contact each other in a vertical position. Grooves are formed. Generally, about 10-30 sheets or more glass substrates are accommodated in the glass substrate conveyance box.

The conventional glass substrate conveyance box which consists of the above-mentioned resin injection molded object and its granulated product can convey a glass substrate etc. in a sealed state. However, since only the weight of the box itself is, for example, 5 to 6 kg, there is a disadvantage in that it is difficult to handle in movement, lamination, and transportation. Moreover, since this glass substrate conveyance box does not have cushioning property, there is little ability to absorb a shock when an impact and a vibration are applied. As a result, there exists a problem that the glass substrate accommodated in this glass substrate conveyance box is easy to be damaged.

In addition, the glass substrate carrying box made of a resin injection molded product has a high thermal conductivity (around 0.26 Kcal / m · hr · ° C), so that the glass substrate to be accommodated due to poor thermal insulation becomes hot or condensation occurs on the glass substrate. It is easy to do it. As a result, there is a possibility that the reliability of the glass substrate may be impaired, such as staining of the water droplets on the glass substrate, or a circuit breakage.

In addition, since the cost of the injection molding mold which matched the main body and cover body of the glass substrate conveyance box is high, and the resin usage amount per glass substrate conveyance box becomes 5-6 kg, for example, in terms of resin cost, Another disadvantage is that the burden is large.

(Foam box for transporting substrate made of resin foam)

In order to overcome the above-mentioned problems of the glass substrate conveyance box made of the injection molded product, the present applicant uses a resin foam substrate transport foam box as disclosed in the following publications (A) and (B). Developing.

(A) Japanese Unexamined Patent Publication No. 7-132986

In Japanese Unexamined Patent Application Publication No. 7-132986, at least the main body portion of the box is composed of a resin foam having a foaming ratio of 3 to 30 times, and a pair of surfaces facing each other on the inner surface of the main body portion are formed as grooves for supporting the glass substrate. Disclosed is a foam box for transporting a substrate.

(B) JP-A-7-257681

In the above-mentioned Japanese Patent Application Laid-Open No. 7-257681, a substrate-carrying member formed by placing an interpolation member having a plate-shaped or box-shaped groove having a groove for supporting a substrate inside a box made of a foam having a foaming ratio of 3 to 30 times. The box is disclosed.

In the case of manufacturing the foamed box for transporting the substrates disclosed in the two prior art documents, when the glass substrate is accommodated in the foamed transporter body for transporting the substrate, the glass substrate is located above the upper end of the opening of the foamed transporter body for transporting the substrate. The one manufactured so as to protrude becomes easier to perform the operation of inserting and removing the glass substrate by hand.

In a state where the glass substrate is accommodated inside the foam box body for transporting the substrate, when a box-shaped cover body provided with a groove is provided from the top of the glass substrate to the inner surface side of the upper surface, there is a slight margin between the glass substrate and the groove. Therefore, when covering the lid, it is conceivable that the upper edges of all the glass substrates that are vertically aligned with the predetermined number of sheets do not exactly match the grooves of the lid. If the cover object is forcibly pressed in this inconsistent state, the upper side of the glass substrate is not penetrated into the valley of the groove of the cover body but into the mountain part (off the groove), or the same groove (part of the valley). There is a possibility that two glass substrates may enter.

Therefore, according to the examination by the present inventors, such a trouble is made from the support member which consists of a protective plate which provided the groove | channel in the lower surface of the horizontal board from the protruding glass substrate, or one side of a horizontal board, before covering a cover body. The countermeasure which can be solved by inserting the support member which consists of two protection plates which consist of an inverted L-plate with the groove | channel in which the vertical board was dripped, and then covering the cover body so that the support member is contained was discovered.

However, if such measures are taken, in the operation of taking out the glass substrate from the foam box for transporting the substrate, the cover member is first peeled off from the foam box body for transporting the substrate, and then the support member is separated from the glass substrate. Two operations are required. Therefore, when the operation | work which takes out a glass substrate from a foam box for board | substrate conveyance is performed automatically using an apparatus, it is necessary to control an apparatus so that said 2nd operation can be implement | achieved.

In addition, as another problem, generation of dust or the like (hereinafter referred to as oscillation) caused by grazing of the glass substrate and the support grooves when the glass substrate is inserted into the box or when the glass substrate is taken out becomes a problem. Therefore, in order to suppress this oscillation, in order to raise the hardness of a foam box main body and foam cover member, the foam of 3-30 times of expansion ratios is used.                         

However, since this glass substrate conveyance box is used repeatedly, deterioration in the support groove part which frequently contacts a glass substrate frequently is severe, and there exists a limit in suppressing oscillation only by raising hardness of a foam. Such a problem can be said not only in a glass substrate but also in the board | substrate foam box used for conveying the board | substrate which has a characteristic similar to a glass substrate.

Under such a background, the first object of the present invention is not only to have a desirable feature by using a polyolefin-based foam, but also to protrude the glass substrate vertically while protecting the protruding portion from the box body of the glass substrate. When the cover body is covered with the box body, grooves are not generated, and in addition, the present invention provides a foaming box for transporting a substrate, which can automatically take out the glass substrate from the box using an apparatus.

Moreover, the 2nd object of this invention is to provide the glass substrate conveyance box which has a structure which can suppress oscillation further.

(Means to solve the task)

In some aspects of the foam box for transporting a substrate according to the present invention, a box body having a substrate support groove for supporting a glass substrate on an inner wall facing each other as a foam box for transporting a substrate therein. And an opening side of the upper part of the box body so as to contain the support member in which the support member is provided with an upper support groove for supporting the upper portion of the glass substrate, and the support member is mounted on the upper end of the glass substrate. A box-shaped cover member for coupling to the cover member is provided, and a planar connecting member is provided as a connection region for connecting the support member and the cover member between the support member and the inner wall surface of the cover member.

According to the above configuration, after accommodating the glass substrate in the box main body, the support member is placed on the upper end side of the glass substrate, so that the glass substrate can be accurately pinched in correspondence to the line of the upper support groove provided in the support member. Done. Thereby, compared with the case where the upper support groove | channel was provided directly in a cover body like the conventional one, it can prevent that a some glass substrate is fitted in one groove | channel.

Moreover, by providing the connection area for connecting a support member and a cover body between a support member and the inner wall surface of a cover body, the support body is covered by covering a lid | cover body in a box main body in the state in which the support member was mounted on the upper part of a glass substrate. And the lid are connected. Thereafter, the support member can be peeled off at the same time as the cover member is peeled off at the time of taking out the glass substrate, so that the workability at the time of taking out the glass substrate can be improved.

In another aspect of the foam box for transporting a substrate according to the present invention, there is provided a foam transporting box made of a foam for accommodating a substrate therein, the upper portion of which is opened, accommodates the substrate, and the inner wall facing each other. A foam box body having side support grooves for supporting a substrate, and a foam cover member for blocking an upper opening of the foam box body, wherein at least the surface of the side support grooves is covered with a protective film.

Thus, by adopting a configuration in which the surface of the side support grooves is covered with a protective film, the foam is not directly contacted at the time of contact with the substrate, so that even when it is used repeatedly, oscillation due to deterioration of the foam may occur. none. As a result, it becomes possible to significantly increase the service life of the foamed box for transporting the substrate which causes oscillation, and to reduce the running cost of the foamed box for transporting the substrate.

Moreover, in the said foam board for conveyance of a board | substrate, as a preferable aspect, the said box main body further has the bottom support groove for supporting the said board | substrate in the bottom wall, At least the surface of the said bottom support groove is a protective film. Covered with Also provided is an upper support member having an upper support groove for supporting the upper end of the substrate, at least the surface of the upper support groove being covered with a protective film.

Thus, by adopting the structure which covers all the surface of the support groove for supporting a board | substrate with a protective film, it becomes possible to extend the service life of the foaming box for board | substrate conveyance which causes oscillation significantly, and for board | substrate conveyance It is possible to reduce the running cost of the foam box.

Moreover, More preferably, the said protective film is an ultra high molecular weight polyethylene film. Here, since this ultra high molecular polyethylene film is equipped with the characteristic which is rich in abrasion resistance among the polyethylene type film, it becomes possible to further extend the service life of the foam box for conveyance of a board | substrate.                         

In addition to the foregoing, the features, forms, advantages, and the like of the present invention can be made more clearly from the accompanying drawings and detailed description of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, the foaming box for board | substrate conveyance in each embodiment based on this invention is demonstrated with reference to drawings.

(Embodiment 1)

(Configuration of Foam Box for Substrate Transport)

With reference to FIG. 1 and FIG. 2, the structure of the foaming box for board | substrate conveyance in this embodiment is demonstrated. The foam box for transporting the substrate is constituted of, for example, male and female surface fasteners 4a and 4b as the box main body 1, the support member 3, the box-shaped lid 2 and the planar connecting member.

(Box body (1))

The box main body 1 consists of a box-shaped member with an upper part opening and a bottom. As the constituent material, polyolefin foams such as polyethylene foams (low density polyethylene, high density polyethylene, ethylene-propylene copolymers, ethylene-vinyl acetate copolymers, ionomers, or blends thereof) foams and polypropylene foaming agents are used. As the foam box for transporting the substrate, a polypropylene foam having a high strength is particularly suitable.

The foaming ratio of the polyolefin-based foam is most preferably in the range of 3 to 30 times, preferably 4 to 25 times, more preferably 5 to 20 times, in particular 7 to 18 times. When the expansion ratio is too small, the protection (cushionability) or the like of the glass substrate is not sufficiently achieved, while when the expansion ratio is too large, the strength is insufficient and the elasticity is excessive. The thickness of the box main body 1 is preferably set to about 15 to 100 mm, particularly about 20 to 80 mm, in consideration of the balance between strength, weight resistance, hardness and elasticity.

It is especially preferable to manufacture a polyolefin foam by the beading method. The beads method is a method in which a polyolefin beads containing a blowing agent or a primary foam thereof is filled in a mold and heated to a predetermined temperature. As the blowing agent, a volatile blowing agent, a chemical decomposition blowing agent, or the like is used, and two or more blowing agents may be used in combination. Since the bead foaming method is a low pressure foaming method, a mold of low cost such as an aluminum mold can be used as the mold.

It is preferable that the surface of this polyolefin foam is formed in the skin structure more dense than the inside. It is preferable that the density of the part from the surface of the skin structure to the depth of 1 mm at this time is made 1.5 times or more, especially 2 times or more larger than the internal density. For example, in foam molding, after the post-heating, only the surface in contact with the mold inner surface can be formed in a dense skin structure. It is advantageous to have a dense skin structure only on the surface in terms of preventing dusting and improving strength.

The box body 1 is usually composed of a bottomed box, but may be joined by inserting a bottom body into a body part without a bottom. A cushioning material may be provided on the inner bottom of the box body 1. The bottom part of the box main body 1 can also be formed in a support leg shape.

In the box main body 1, 10 A of board | substrate support grooves for glass substrate support are directly formed in the inner wall which mutually opposes. Formation of 10 A of board | substrate support grooves can be performed simultaneously with shaping | molding of the box main body 1 by devising a metal mold | die.

Moreover, the method of preparing the interpolation member 1a in which the board | substrate support groove | channel 10A was formed (refer FIG. 2), and inserting the interpolation member 1a in the mutually opposing inner wall of the box main body 1 can also be employ | adopted. . The shape of the interpolation member 1a can be made into two separated plate-shaped bodies, or a plate-shaped body such as a U-shape or a box. As an example of the interpolation member 1a, it is (a) below. (b), (c) and (d) are shown. Moreover, the structure of (a) shown below is the most preferable.

(a) A plate-shaped, U-shaped or box-shaped foam molded article made of foam (particularly foam having a foam ratio of 3 to 30 times). This foamed molded article is preferably the same foam as in the case of the box body 1, in particular, a polyolefin-based foam, that is, a polypropylene-based foam or a polyethylene-based foam. As the foam molding method, a beads method, an extrusion foaming method, or the like is adopted.

(b) A plate-shaped, U-shaped or box-shaped press-formed body obtained by press-molding a resin sheet. Pressurized molding is a method of setting a resin sheet in a metal mold | die, vacuum-sucking under heating, and shape | molding to a predetermined shape. As the resin sheet, various resins that can be press-molded are used.

(c) A plate-shaped, U-shaped or box-shaped melt molded product obtained by melt molding a resin. As the melt molding method, an extrusion molding method or an injection molding method is adopted. As resin provided to melt molding, the various resin which can be melt-molded is used.

(d) Plate-shaped, U-shaped or box-shaped machined products obtained by machining (cutting, etc.) a plate such as a resin plate.

In any of the above cases, as shown in FIG. 2, when the interpolation member 1a is two separate plate-shaped bodies, the interpolation member is disposed on the inner surface side of at least one pair of faces of the box body 1 facing each other. Insert and arrange (1a). The pair of faces facing each other may be a pair of faces on the short side or a pair of faces on the long side when the box body 1 is rectangular in plan view.

In some cases, the plate-shaped grooved interpolation member 1a is disposed on both of the pair of surfaces on the short side and the pair of surfaces on the long side to cope with the receipt of the substrate of two different dimensions. It may be. In addition, a convex stripe for joining is formed on the inner surface side of the pair of faces of the box main body 1 facing each other, and a groove line is formed on the rear surface side of the interpolation member 1a to fit the convex row. If it is, the attachment and detachment of the interpolation member 1a to the box body 1 can be performed more smoothly.

When the interpolation member 1a has a U shape or a box shape, the interpolation member 1a may be inserted into the box body 1 as it is.

10 A of board | substrate support grooves provided in the box main body 1, or 10 A of board | substrate support grooves provided in the interpolation member 1a are made into the depth and width which can insert the edge part of the glass substrate 100, In addition, the glass substrate 100 is set so that there is a slight margin in the inserted state. Although the number of grooves of the substrate supporting groove 10A can be arbitrarily set, it is often set to about 10 to 30 rows or more of grooves per surface. Regarding the shape of the peak of the groove structure, in order to reduce the contact with the glass substrate 100, it is preferable that there is R (curved surface) or taper.

TFT (thin film transistor) when forming the purpose to receive a complete panel of the glass substrate and the liquid crystal cell is over, the volume resistivity of the surface of at least the box inner side of the box body (1) and inner member (1a) is 10 ³ to 10 ¹² Ω · cm, in particular, it is preferably set within the range of 10 ⁴ to 10 ¹¹ Ω · cm. In order to have such a volume specific resistance value, about the box main body 1 and the interpolation member 1a (or the lid | cover body 2 and support member 3 mentioned later also), inherently electroconductivity is used as raw material resin for the manufacture. A method of using a resin having a resin, a method of containing a% to 10% of an antistatic material (including a conductive polymer or a surfactant) in a raw material resin, a conductive film is installed in a mold, and the conductive film is formed at the same time as The method of integrating on the surface is adopted.

(Support member 3)

The support member 3 is, for example, as shown in FIG. 1, the box body 1 of the glass substrate 100 vertically sandwiched between the substrate support grooves 10A facing each other of the box body 1. As a part to protect the protruding portion from), it plays a role of preventing rattling and preventing danger during handling.

As shown in FIG. 2, this support member 3 consists only of the horizontal board 3a, or as shown in FIG. 1, the vertical board 3b is formed from one side of the horizontal board 3a. A lower L side of the horizontal plate 3a, or a lower surface side of the horizontal plate 3a of the inverted L plate, and a lower surface side of the horizontal plate 3a of the inner side of the vertical plate 3b. Has a structure in which an upper support groove 10B for supporting a glass substrate is provided. When using the horizontal board 3a of the reverse L-board shown in FIG. 1, the two sheets are to protect the upper left side and the upper right side of the glass substrate 100. FIG. In some cases, it may be a U-shape (a type rotated 90 ° in the counterclockwise rotation direction) in which the left and right reverse L-keys are integrated.

The material of the support member 3 is made of a foam, a press-molded body, a melt-molded body (soft and abrasion-resistant resin such as high molecular weight polyethylene, a fluorine resin, an elastomer, etc.) similarly to the interpolation 1a described above. Preferred). Formation of the upper support groove 10B can be performed simultaneously with molding or a machined product.

Among them, polyethylene foams and polypropylenes having a foaming ratio of about 3 to 70 times (particularly about 5 to 60 times) and a thickness of the horizontal plate 3a of about 10 to 100 mm (particularly about 15 to 80 mm). Polyolefin foams such as foams are particularly suitable. In contrast to the polyethylene foam and the polypropylene foam, the support member 3 is more preferably polyethylene foam in terms of cushioning properties.

(Cover body (2))

Referring to FIG. 1, the lid 2 has a box shape. The box bone so as to contain the support member 3 in a state in which the support member 3 is attached to a protruding portion from the box body 1 of the glass substrate 100 vertically inserted into the box body 1. It engages with the opening side of the upper part of the sieve 1.

The lid 2 is made of a polyolefin-based foam similarly to the box main body 1, and the expansion ratio thereof is also the same as in the case of the box main body 1. In addition, since the cover body 2 is not required to have the same strength as the box body 1, the polypropylene foam is preferable, but the polyethylene foam is also useful accordingly, and the thickness of the cover body 2 is also higher. Also, the thickness may be set slightly thinner than the box body 1, such as about 15 to 100 mm, particularly about 15 to 70 mm and about 20 to 60 mm.

(Cotton fasteners 4a, 4b)

In the present embodiment, male and female surface fasteners 4a and 4b are placed on the upper surface side of the horizontal plate 3a of the support member 3 and the inner surface side 2a of the upper surface of the lid 2. Prepare to respond. It is free to provide the female or male surface fasteners 4a and 4b on either side, and the female and male surface fasteners 4a and 4b are provided on one side, and Both the male and female face fasteners 4a and 4b may be provided so as to correspond.

The surface fasteners 4a and 4b may lift up the support member 3 together with the lid 2 when the lid 2 is removed from the box body 1. Therefore, what is necessary is just to provide as one or several small pieces in the upper surface of the horizontal board 3a of the support member 3, and the inner surface 2a of the upper surface of the said cover 2.

Arbitrary methods may be employed as the method of attaching the piece surface fasteners 4a and 4b to the upper surface of the horizontal plate 3a of the support member 3 and the inner surface 2a of the upper surface of the lid 2. Can be. For example, when a method of bonding using an adhesive, a method of bonding (adhesive) using a double-sided adhesive tape, and the lid 2 and the support member 3 together are made of a polypropylene foam, the surface fastener ( By attaching 4a, 4b) to the polypropylene sheet by means of sewing or the like to form a label-shaped piece, a method of bonding the portion around the piece with a hot melt adhesive or the like is adopted.

(Packing)

In the transportation (for example, export) of the foaming box for transporting a substrate to a distant place, the entire foaming box for transporting a substrate of the present embodiment in which the glass substrate 100 is accommodated is made of a polyolefin film or an aluminum laminate film. It can be wrapped with a moisture-proof packaging material or the whole can be wound with a tape. In the packaging, a moisture absorbent such as silica gel may be placed inside the foam box for transporting the substrate.

(Action)

In using the board | substrate conveyance box of this embodiment, after letting the glass substrate 100 fit vertically using 10A of board | substrate support grooves provided in the box main body 1, the glass substrate 100 The protruding portion from the box body 1 is protected by the support member 3. Thereafter, the lid 2 may be coupled to the opening side of the upper portion of the box body 1 so as to contain the support member 3. In and out of the glass substrate 100 may be performed in the state which made the box main body 1 into a vertical position, and may be performed in the state which made the horizontal direction. It is common to convey or store a box in a vertical position.

When taking out the glass substrate 100 from inside the board | substrate carrying box, when the cover body 2 is opened, the inner surface 2a of the upper surface side of the horizontal board 3a of the support member 3, and the upper surface of the cover body 2a is carried out. The female member surface fasteners 4a and 4b are provided on the c) side so that the support member 3 is also lifted together with the lid 2. As a result, since the protrusion part of the glass substrate 100 is exposed from the box main body 1, the glass substrate 100 can be taken out easily.

The support member 3 connected to the lid | cover 2 by the male and female surface fasteners 4a and 4b is peeled off by hand, and is used for the next packing operation.

In addition, since the main member is made of the polyolefin foam in the substrate transport box in the present embodiment, the following effects can be obtained.

(1) The damage of the glass substrate 100 is prevented effectively even when impact, a vibration, etc. are added to the box for board | substrate conveyance by the outstanding cushioning property.

(2) The strength is large, it has great resistance against tearing and friction, there is no oscillation, and washing with water and the like is also possible.

(3) Support of the glass substrate 1 side is made reliably.

(4) A glass substrate (including a finished panel) accommodated because it has excellent heat insulating property (for example, in the case of a polyolefin foam having 15 times foaming, the thermal conductivity is about 0.036 to 0.038 Kcal / m · hr · ° C). 100 does not become hot or condensation occurs on the glass substrate 100, and there is no fear of damaging the reliability of the substrate, such as generation of droplet marks or breakdown of the circuit.

(5) Since the amount of resin used per box is significantly reduced, it is advantageous in terms of manufacturing cost in terms of resin consumption.

(6) Since the molding of the foam can be performed at low pressure by using an inexpensive mold such as an aluminum mold, it is advantageous in terms of the mold cost.

(7) When at least the volume specific resistance of the surface is 10 ³ to 10 ¹² Ω · cm, charging is effectively prevented while the glass substrate 100 is moved in and out of the glass substrate 100. Since the attenuation time is maintained for a certain time such as 0.5 to 1 second because the resistance value is within the above range, the attenuation is performed slowly in an appropriate range, and there is no fear of causing circuit failure.

EXAMPLE

Next, an example is given and the board | substrate conveyance box in the said embodiment is demonstrated in more detail.

(Example 1)

With reference to FIG. 1 and FIG. 2, the foam molding of the box main body 1 of the foaming box for board | substrate conveyance in this Example 1 is shown below. First, the expandable polypropylene particles were evaporated once, and then left to replace the inclusion gas with air. This was filled into an aluminum mold, and foamed by blowing 4 kg / cm 2 of steam at once. Then, it post-heated at the temperature of 60 degreeC, and the bottomed box main body 1 was obtained.

By devising a metal mold | die, the board | substrate support groove 10A for glass substrate support was formed in the longitudinal direction in the inner surface side of a pair of surface of the box main body 1 which mutually opposes. The foam had substantially independent bubbles, and the foaming ratio of the entire foam was 12 times, but the foaming ratio from the inner and outer surfaces to the depth of 1 mm was 4 to 5 times, and skin layers were formed on both surfaces.

In the same manner, by foaming the expandable polypropylene particles, the box-shaped lid 2 as shown in Figs. 1 and 2 was also foam molded. The foam had substantially independent bubbles, and the foaming ratio of the entire foam was 12 times, but the foaming ratio from the inner and outer surfaces to the depth of 1 mm was 4 to 5 times, and skin layers were formed on both surfaces.

The thickness of the box main body 1 thus obtained was 50 mm and the thickness of the lid 2 was 35 mm. The dimensions of the box in the closed state were 1405 mm in width, 720 mm in depth, and 1210 in height. Mm.

Further, by foaming the expandable polyethylene particles in accordance with the molding method of the box body 1 and the lid 2, as shown in Figs. 1 and 2, the vertical plate 3b from one side of the horizontal plate 3a. Two support members (3, 3) of the reversed L-shaped plate shape were obtained. By devising a mold, the upper support groove 10B for glass substrate support was formed in the lower surface side of the horizontal board 3a, and the inner surface side of the vertical board 3b. This foam also had substantially independent bubbles, and the foaming ratio of the entire foam was 30 times, but the foaming ratio from the inner and outer surfaces to the depth of 1 mm was 4 to 5 times, and skin layers were formed on both surfaces. In addition, the thickness of the horizontal board 3a and the vertical board 3b of the reverse L keyboard was set to 26 mm together.

Next, as shown in Figs. 1 and 2, the upper surface side of the horizontal plate 3a of the support member 3 and the lid 2 are shown on the inner surface 2a side of the upper surface. , 4b) were attached to correspond to each other.

Attachment of the male and female surface fasteners 4a and 4b to the upper surface side of the horizontal plate 3a of the support member 3 and the inner surface 2a side of the upper surface of the lid 2 uses a double-sided adhesive tape. Was carried out.

The usage method of the board | substrate conveyance box in this embodiment is as having described in the term of an operation, and can accommodate and take out the glass substrate 100 into a board | substrate conveyance box very smoothly.

(Example 2)

A box body made of foam in the same manner as in Example 1, except that foamed polypropylene of a conductive grade containing carbon black of 20% by weight (may be foamed polypropylene having an antistatic grade surfactant added therein) ), The lid 2 and the support member 3 were manufactured.

The volume resistivity (according to ASTM D257) on both surfaces of these foams is in the range of 10 ⁴ to 10 ¹¹ Ω · cm. The adhesion of the surface fasteners 4a and 4b of the male and female was also performed in the same manner as in Example 1. The board | substrate conveyance box of this Example 2 accommodates the objective which accommodates the TFT panel formation glass substrate and the completed panel of a liquid crystal cell, and provides for conveyance and storage, Acceptance and withdrawal work can be performed extremely smoothly.

(Example 3)

2 is a longitudinal sectional view showing another example of the foam box for transporting a substrate of this embodiment.

In this embodiment, a groove is not formed in the box body 1 made of polyolefin-based foam, and instead, two interpolation members 1a having a substrate support groove 10A for glass substrate support are formed. The main body 1 is inserted into inner walls that face each other. Moreover, the bottom part of the box main body 1 is formed in the shape of a support leg. The other structure is the same as that of Example 1. (In addition, as the interpolation member 1a, a pressure sheet formed by setting a resin sheet such as an ABS resin sheet into a mold, vacuum suction under heating, and formed into a box shape at once, and a pair of faces facing each other support the substrate. You may use what was formed corrugated so that it might become 10A of board | substrate support grooves for dragons.)

(Example 4)

3 is an overall perspective view showing still another example of the foam box for transporting a substrate of this embodiment.

As the support member 3, instead of the inverted L-shaped shape described in Examples 1 to 3, an upper support groove 10B for supporting a glass substrate is formed on the lower surface side thereof. The support member 3 is made of a polyethylene-based foam (a skin layer is formed on both surfaces in the same manner as in the case of the inverted L keyboard described above), which is composed of a horizontal plate 3a having a foam ratio of 30 times and a thickness of 26 mm. In the same manner as in Example 1, a foam box for transporting the substrate was produced.

In addition, although the structure mentioned above shows the case where the surface fasteners 4a and 4b were used as an example of a connection area | region in order to implement connection of the cover body 2 and the support member 3, the following figure is shown. It is also possible to employ | adopt the structure as a connection area which consists of the structure shown in 4-6.

With reference to FIG. 4, in this structure as a connection area | region, the columnar convex part 14a which protrudes toward the lower side is provided in the inner surface 2a side of the upper surface of the cover body 2. As shown in FIG. The tip area | region of this columnar convex part 14a is provided with the overturning area | region 141 which extends outward. On the other hand, the opening recessed part 14b which can accommodate the columnar convex part 14a is provided in the upper surface side of the horizontal board 3a. The quantity of the columnar convex part 14a and the opening recessed part 14b can be selected suitably.

Thus, when employ | adopting the connection area | region which consists of the columnar convex part 14a and the opening concave part 14b, the columnar convex part 14a is inserted in the opening concave part 14b, and the area | region 141 turned over is By being coupled to the horizontal plate 3a, it is possible to connect the lid 2 and the support member 3 in a state where the lid 2 is attached to the box body 1.

With reference to FIG. 5, in the structure as this connection area | region, the cross section which protrudes toward the lower side in the inner surface 2a side of the upper surface of the lid | cover 2 is provided with the rhombic linear convex part 24a. On the other hand, on the upper surface side of the horizontal board 3a, the linear opening cross section which can accept the linear convex part 24a is provided with the rhombic linear recessed part 24b. The quantity of the linear convex part 24a and the linear concave part 24b can be selected suitably.

Thus, when employ | adopting the connection area which consists of the linear convex part 24a and the linear concave part 24b, the linear convex part 24a is inserted in the linear concave part 24b, and the cover body 2 ) Is attached to the box body 1, and the lid 2 and the support member 3 can be connected.

With reference to FIG. 6, the structure as this connection area | region is provided with the triangular linear convex part 34a in which the cross section which protrudes toward the side is provided in the inner surface 2b side of the side wall of the cover body 2. As shown in FIG. On the other hand, the shaded part 34b which extended outward is provided in the upper part of the side end surface side of the horizontal board 3a.

Thus, when the connection area | region which consists of linear convex part 34a and the shading part 34b is employ | adopted, the shading part 34b is linear in the state which attached the cover body 2 to the box main body 1. By press-fitting between the convex part 34a and the inner surface 2a, the shading part 34b is coupled to the linear convex part 34a to enable connection between the lid 2 and the support member 3. .

(Embodiment 2)

First, with reference to FIG. 7 and FIG. 8, the schematic structure of the glass substrate conveyance box 200 in this embodiment is demonstrated.

<Overall structure of foaming box 200 for glass substrate conveyance>

The foam box 200 for conveying the glass substrate has an upper opening, a foam box body 210 for accommodating the glass substrate 201, and a foam lid member for blocking the upper opening of the foam box body 210 ( 220 and an upper support member 230 for supporting the upper end of the glass substrate 201. As an example of the outer diameter dimension of the foaming box 200 for glass substrate conveyance, they are about 300 mm-1100 mm in width, about 350 mm-1200 mm in depth, and about 400 mm-1250 mm in height.

The foam box body 210, the foam cover member 220 and the upper support member 230 are polyethylene-based (low density polyethylene, high density polyethylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer, or the like, or blends thereof Water) polyolefin foams such as foams and polypropylene foams. In particular, a polypropylene-based foam having a high strength is suitable as a material of the foaming box 200 for conveying a glass substrate.

Regarding the expansion ratio, if less, the protective property (cushionability) or the like of the glass substrate cannot be sufficiently obtained. On the other hand, when foaming ratio is excessive, strength will become insufficient and elasticity will become excessive. Therefore, in the case of the polyolefin-based foam, the expansion ratio is set in the range of 3 to 30 times, preferably 4 to 25 times, more preferably 5 to 20 times, still more preferably 7 to 18 times.

The thickness of each member is provided in the range of about 15 mm to 100 mm, preferably 20 mm to 80 mm, in consideration of the balance between strength, weather resistance, hardness and elasticity.

On the inner wall 211 of the foam box main body 210 which opposes each other, the side support groove 212 for supporting the side part of the glass substrate 201 is provided in the state which stood the glass substrate 201. In addition, a plurality of bottom support grooves 214 for supporting the bottom of the glass substrate 201 are also provided on the bottom wall 213 of the foam box body 210. The upper support member 230 is also provided with a plurality of upper support grooves 231 for supporting the upper end of the glass substrate 201.                     

The shape of the side support grooves 212, the bottom support grooves 214, and the upper support grooves 231 is a depth and a width into which the edge portions of the glass substrate 201 can be inserted, respectively, and the glass substrate 201 is formed. It is preferable that there is a slight margin in the inserted state. Although the number of each groove | channel is suitably selected according to the glass substrate accommodation number of the foaming box 200 for glass substrate conveyance, about 10-30 rows or more of grooves per wall surface are many. Regarding the shape of the peak portion of the hop portion, in order to reduce contact with the glass substrate 201, it is desirable to adopt a curved shape and an inclined shape. As an example of the groove dimension, the groove depth is about 4 mm to 20 mm, and the groove width is about 2 mm to about 10 mm.

In addition, the side support grooves 212 and the bottom support grooves 214 can be molded directly to the inner wall surface and the bottom wall surface of the foam box body 210, but the inner wall surface and the interpolation cushion member having the support grooves are formed. It is also possible to adopt a configuration in which the bottom wall is detachably provided. When providing an interpolation cushion member, the material of this interpolation cushion member is comprised from foam members like the foam box main body 210. As shown in FIG.

In addition, from the viewpoint of achieving workability, surface fasteners 241 and 242 for enabling attachment and detachment between the upper surface of the upper support member 230 and the inner surface side 221 side of the foam lid member 220. ) Is provided. Moreover, the structure which provides the upper support groove 231 directly in the inner surface side 221 of the foam lid member 220 without employ | adopting the upper support member 230 is also employable.

<Configuration of Support Groove>

Next, the structure of the side support groove 212, the bottom support groove 214, and the upper support groove 231 is demonstrated with reference to FIG. In addition, since the basic structure of each support groove is the same, the side support groove 212 is demonstrated as a representative example.

In this side support groove 212, the groove | channel 212a which consists of unevenness | corrugation formed in the inner wall 211 (or the interpolation cushion member), and the protective film 212b which covers the surface of the groove | channel 212a according to the unevenness | corrugation are provided. Have This protective film 212b needs to cover at least the groove 212a, the whole inner surface of the foam box main body 210, the whole inner surface of the foam lid member 220, and the outside of the upper support member 230. The configuration which covers the whole surface of the surface does not matter, either.

As the protective film 212b, it is possible to use a polyethylene-based film, and in particular, it is preferable to use an ultrahigh molecular weight polyethylene film 212b from the viewpoint of wear resistance to the glass substrate 201. As a film thickness of this ultrahigh molecular weight polyethylene film 212b, about 0.1 micrometer-about 1.0 micrometer are used.

Here, the fusion | blending method of the ultrahigh molecular weight polyethylene film 212b to the groove | channel 212a for completing the side support groove | channel 212 is demonstrated with reference to FIG.

First, as shown to Fig.10 (a), the ultrahigh molecular weight polyethylene film 212B is prepared. Thereafter, as shown in Fig. 10 (b), the ultrahigh molecular weight polyethylene film 212B is previously formed into an ultrahigh molecular weight polyethylene film 212b having a shape corresponding to the shape of the groove 212a by heat molding. Next, as shown in Fig. 10C, at the same time as the formation of the grooves 212a, the already formed ultrahigh molecular weight polyethylene film 212b is heat-fused to coat the grooves 212a. As a result, the side support grooves 212 are completed.

In addition, when a glass substrate is used to accommodate a plasma display substrate, a glass substrate on which TFT (thin film transistor) is formed, or a completed panel of a liquid crystal cell, the box body 210 or the upper support member of at least the side in contact with the substrate. It is preferable that the volume specific resistance of the surface is set within a range of 10 ³ to 10 ¹² Ω · cm, particularly 10 ⁴ to 10 ¹¹ Ω · cm.

As mentioned above, according to the foaming box 200 for conveyance of the glass substrate which consists of the said structure, at least each support groove | channel 211, 212, 231 which directly contacts the glass substrate 201 is made of protective film, such as an ultra high molecular weight polyethylene film 212b. Since the cover structure is adopted, the foam is not directly in contact with the glass substrate 201, and even when the foam substrate 200 for transporting the glass substrate is repeatedly used, the oscillation is caused by the deterioration of the foam. I never do that. As a result, it becomes possible to significantly increase the service life of the foaming box 200 for transporting the glass substrate which causes oscillation, and to reduce the running cost of the foaming box 200 for transporting the glass substrate. .

In the foam substrate 200 for conveying the glass substrate, in order to reliably support the glass substrate 201, the side support grooves 212, the bottom support grooves 214, and the upper support grooves 231 are provided. Although the structure was shown, it is possible to support the glass substrate 201 by providing the side support groove 212 at least.

Moreover, in each said embodiment, although the example which applied the structure of this invention to the foaming box for glass substrate conveyance which conveys a glass substrate was shown, for board | substrate conveyance for accommodating and conveying the board | substrate which has a property similar to a glass substrate The same can be applied to the foam box.

The foam box for transporting the substrate of the present invention has all the desirable features as described in the section of the action by using a polyolefin-based foam, and of course, the protruding portion from the box body of the glass substrate is protected by the support member. It is. And since the means which interposes a support member is calculated | required, when a cover body is covered to the box main body which sandwiched the glass substrate vertically, the groove | channel leaving off does not generate | occur | produce. In addition, since the support member and the lid can be attached and detached by a male and female surface fastener, the extraction operation of the glass substrate from the box can be automatically performed using an unpacker.

According to the foam box for substrate conveyance based on this invention, it becomes possible to provide the glass substrate conveyance box which has a structure which enables further suppression of oscillation.

Although apparent from the detailed description of the invention, it is not limited to the detailed description and some examples, but is defined by the appended claims of the invention.

Claims (11)

In a foam box for transporting a substrate for accommodating a glass substrate therein, A box body 1 having a substrate supporting groove 10A for supporting the glass substrate 100 on an inner wall facing each other, A support member 3 provided with an upper support groove 10B for supporting the upper portion of the glass substrate 100; In a state where the support member 3 is attached to the upper end of the glass substrate 100, a box-shaped cover member for coupling to the opening side of the upper portion of the box body 1 so as to contain the support member 3. (2) provided, Between the support member 3 and the inner wall surface of the lid 2, a planar connecting member for connecting the support member 3 and the lid 2 is provided. Foam box. The method of claim 1, The support member 3, A horizontal plate 3a provided with the upper support groove 10B on its lower surface side, and a vertical plate provided with the upper support groove 10B on its inner surface side and drooping from one side of the horizontal plate 3a ( Consisting of an inverted L keyboard with 3b), The said plane connection member is provided between the surface side of the said horizontal board (3a), and the inner wall surface of the said cover body (2), The foam box for board | substrate conveyance characterized by the above-mentioned. The method of claim 1, The said support member 3 consists only of the horizontal board 3 in which the said upper support groove 10B was provided in the lower surface side, The said board | substrate connection member is provided between the surface side of the said horizontal board (3), and the inner surface side of the said cover body (2), The foam box for board | substrate conveyance characterized by the above-mentioned. The method of claim 1, As said planar connecting member, a male and female surface fasteners 4a and 4b are provided between the support member 3 and the inner wall surface of the lid 2 so as to correspond to each other. . delete The method of claim 1, The box body (1) and the lid (2) are polyolefin foams, characterized in that the foam box for transporting the substrate. The method of claim 6, The support member (3) is a foam box for transporting a substrate, characterized in that the polyolefin foam. The foam box for substrate transport according to claim 1, wherein at least the surface of the substrate support groove of the box body is covered with a protective film. The method of claim 1, wherein the box body further has a bottom support groove for supporting the substrate on the bottom wall, At least a surface of the bottom support groove is covered with a protective film. The foam box for substrate transport according to claim 1, wherein at least a surface of the upper support groove of the support member is covered with a protective film. The foam box for transporting a substrate according to any one of claims 8 to 10, wherein the protective film is an ultrahigh molecular weight polyethylene film.

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