JP4591747B2 - Glass plate package - Google Patents

Description

  The present invention relates to a glass plate packing body, and more particularly to a technique for arranging a plurality of glass plates so as to overlap each other and packing them with a sheet interposed between the glass plates.

  As is well known, glass plates used for manufacturing glass panels for various image display devices such as liquid crystal displays, plasma displays, electroluminescence displays, field emission displays, etc. are packed in a state where a plurality of sheets are stored and held as a group. It is customary to be transported as a body from a glass manufacturer or the like to a display manufacturer or the like.

  In addition, for example, in manufacturing the above-described various image display devices and the like, a technique in which a plurality of glass panels are created from a single glass sheet has been adopted, and the glass manufacturers are molded and processed accordingly. The current situation is that large glass is being promoted. More specifically, for example, when manufacturing a glass panel of a liquid crystal display, a multi-system in which a large number of glass panels are formed in a large plate glass is employed for the purpose of reducing manufacturing cost and improving production efficiency (throughput). Therefore, attempts have been made to make the raw glass produced by glass manufacturers as large as possible, or they have been put to practical use.

  Specifically, in the initial stage of practical mass production, the size of the base glass was about 300 × 400 mm, but after that, with the increase in the number of glass panels taken, the size of 370 × 470 mm, 550 × 650 mm The size of the glass plate has increased to 680 × 680 mm size, 1000 × 1200 mm size, etc., and currently, a glass plate of 1500 × 1850 mm size (thickness of about 0.7 mm) has been produced.

  In this case, the glass plates listed above and the glass plates according to them are actually thin and easy to break with such a large plate, and the packaging is strictly There is a need to do. Therefore, conventionally, as a method for packing this type of glass plate, a method has been adopted in which a plurality of glass plates are stored in a container at regular intervals and are conveyed in a sealed state. In this method, dust or dust in the outside air does not adhere to the glass plate and is contaminated, and it is possible to prevent generation of scratches due to contact between the glass plates. However, such a method of storing a plurality of glass plates at intervals provides a problem that the space in the container is large and the efficiency of transportation and storage is poor.

  Under such circumstances, according to the following Patent Document 1, a plurality of glass plates are vertically arranged and stored in a box-shaped container whose upper surface is opened, and polypropylene or polyethylene is used between each glass plate. A packaging technique in which a cushion seat is interposed is disclosed. Specifically, FIG. 1A of the same document illustrates a technique for interposing a cushion sheet separated for each glass plate between the glass plates, and FIG. A technique is illustrated in which a cushion sheet is interposed between the glass plates in a state of being continuously folded in a bellows shape. In addition, FIG. 1C illustrates a technique for holding each glass plate in a state in which a cushion sheet continuously folded in an accordion shape is wound around a bar material at a folded portion at each upper end. FIG. 1 (D) shows a technique in which the upper end of a cushion sheet formed in a bag shape is held by a bar and a glass plate is accommodated in each bag-like body.

JP 2003-226354 A

  By the way, the cushion sheet disclosed in the above-mentioned Patent Document 1 is made of polypropylene or polyethylene. However, in the same document, the cushion sheet is something that has been devised in order to obtain good cushioning properties. There is no statement to that effect. Therefore, this cushion sheet must be interpreted as a mere thin flat sheet having only the cushioning property inherent in the resin material. Therefore, this cushion sheet cannot sufficiently reduce the impact generated between the glass plates, and can reliably reduce the probability of occurrence of chipping or cracking of the glass plate due to impact during transportation or the like. It is not a thing. In particular, when a thin glass plate having a large size is transported like a glass plate for a flat panel display substrate, problems of chipping and cracking are likely to occur.

  Furthermore, the packing technique shown in FIGS. 1C and 1D of Patent Document 1 described above requires that a number of bars corresponding to the number of glass plates be attached to the upper edge or side edge of the container. Of course, the structure of the package is complicated, and the glass plate must be stored and taken out using the gaps between the bars, which complicates the work and deteriorates the work efficiency. . On the other hand, according to the packaging technique shown in FIGS. 1A and 1B of the same document, since the bar is not used, these problems can be avoided, but a new problem regarding the buffering property. Occurs. That is, in this packing technique, the impact is reduced by the sheet between the surfaces (front and back) of each glass plate, but the impact cannot be reduced by the sheet at the upper edge (upper end surface) of the glass plate. Therefore, the sheet is not effectively used for impact reduction. For this reason, when vertical vibrations or vibrations act on the glass plate during transportation, etc., the glass plate cannot be adequately protected from the vibration, and the probability of occurrence of chipping or cracking of the glass plate is high. Become. In this packaging technique, it is understood that the left and right end faces of the glass plate are not protected by the sheet, and the same problem arises with respect to vibration in the left-right direction. These problems are also particularly noticeable when a large and thin glass plate for flat panel display substrates is packed and conveyed.

  The present invention has been made in view of the above circumstances, and by appropriately using a resin sheet material interposed between the vertically placed glass plates, the impact generated between the glass plates is sufficiently mitigated. It is a technical problem to make it possible to sufficiently reduce the impact acting on the upper end surface of each glass plate or the end surfaces on both the left and right sides by effectively using the resin sheet.

The present invention made in order to solve the above technical problem, in a glass plate package that is stored in such a manner that a plurality of glass plates for flat panel display substrates are vertically stacked, between each glass plate, It is separated into each glass plate in a sheet state, the expansion ratio is 10 to 40 times , the thickness is 0.3 to 5.0 mm, and the softness that does not break even if folded back and overlapped The foamed resin sheet is projected from the upper end edge and the left and right end edges of the glass plate over the entire length of each end edge of the foamed resin sheet corresponding to the end edges without any other components. It is characterized in that the projecting dimension is made longer than the thickness dimension of the glass plate, and the front and back surfaces of each glass plate are in contact with the surface of each foamed resin sheet and slightly bite. To do.

Here, “in the state of the sheet” means to exclude a foamed resin sheet formed in a bag shape or a foamed resin sheet in a form similar to this. In addition, the above-mentioned “protruding without other components” means eating with components other than the foamed resin sheet such as a bar holding the foamed resin sheet above or a similar material. It means to exclude it. Thus, a glass plate packaging body according to the present invention, between each other the glass plates, if interposed a foamed resin sheet separated each gap of each glass plate in a state of the sheet of interest.

  According to such a configuration, since the foamed resin sheet interposed between the glass plates can obtain better buffering properties than a resin sheet having no interleaf or foamed structure, For example, the impact acting on each glass plate is moderated appropriately. Furthermore, since the surface of the foamed resin sheet has sufficiently high adhesion (or frictional resistance or contact resistance) to the surface of the glass plate, the glass plate is less likely to slide with respect to the foamed resin sheet, and the relative movement between the two is relatively low. Probability of occurrence is reduced. Therefore, even if foreign matter such as dust or dirt is present between the glass plate and the foamed resin sheet, the probability that the foreign matter will rub against the surface of the glass plate is reduced, and the foreign matter causes the glass plate. It is difficult to cause problems such as scratches on the surface. Moreover, since a foamed resin sheet in the form of a sheet is interposed between the glass plates, the storage work of each glass plate is compared with the case where the sheet is in a bag-like form. In addition, the removal work is simplified and the work efficiency is improved.

Then, in particular, foamed resin sheet, the upper edge and left and right edges or these glass plates, since the protruding only long dimension of greater than the thickness of the glass plate, the corresponding edge of the glass plate (the end surface) of the foamed resin It can be protected by the protruding portion of the sheet, and the impact acting not only on the surface (front and back surfaces) of the glass plate but also on the end surface thereof is sufficiently mitigated. As a result, when the package is transported over a long distance, the corresponding end surface (the end surface according to the request) of the glass plate is foamed even when vibration or shaking is applied in the vertical direction or the horizontal direction. The protruding portion of the resin sheet is adequately protected from vibration and the like, and the foamed resin sheet is effectively utilized, and the probability of occurrence of chipping, cracking and other damage of the glass plate is effectively reduced. In addition, since the foamed resin sheet protrudes from the glass plate without other components such as the bar material, the bar material or the like can be an obstacle when the glass plate is stored or taken out. This is impossible, and this also improves work efficiency.

  In this case, in order to surely enjoy the advantages as described above, it is preferable that the protruding portion of the foamed resin sheet covers the edge of the glass plate.

  Thus, as a mode in which the protruding portion of the foamed resin sheet covers the edge (end surface) of the glass plate, the protruding portion of the foamed resin sheet is bent out at the edge of the glass plate. By bringing the portion into contact with the corresponding end surface of the glass plate, or by bringing the front and back surfaces of the glass plate into the surface of the foamed resin sheet and bringing the adjacent protruding portions into contact or substantially in contact with each other without bending, the glass The aspect etc. which cover the applicable end surface of a board can be mentioned. In this way, it is possible to enjoy the advantage of the impact mitigating action while appropriately preventing the upward or leftward movement of the glass plate by the protruding portion of the foamed resin sheet.

  In the above configuration, the foamed resin sheet is preferably composed mainly of polyethylene.

  This is advantageous because the resin sheet has high strength and is not easily torn, and resin sheets having various lengths, widths, and thicknesses can be produced at low cost. In particular, the foamed polyethylene sheet is suitable because it has excellent buffering properties and is very difficult to break.

The thickness of the foamed resin sheet used in the present invention is 0.3 to 5.0 mm .

  In this way, even if a plurality of glass plates and foamed resin sheets are alternately stacked, it is possible to avoid unduly bulky with respect to the arrangement direction of the glass plates. That is, when the thickness of the foamed resin sheet is less than 0.3 mm, it is difficult to sufficiently exert the buffer function that the foamed resin sheet should originally have, and the thickness is too thin and is easily broken. At the same time, handling during the packing operation becomes difficult. On the other hand, if the thickness of the foamed resin sheet exceeds 5.0 mm, even if the number of the glass plates to be stacked is not so large, it becomes unreasonably bulky in the arrangement direction of the glass plates, and the package becomes large in size and cost. Waste also occurs in terms of surface. Therefore, such a problem does not occur if the thickness of the foamed resin sheet is within the above numerical range. In this case, the more preferable thickness of the foamed resin sheet is 0.5 to 2.0 mm.

The expansion ratio of the foamed resin sheet used in the present invention is 10 to 40 times .

  If it does in this way, the situation where tearing arises can be avoided after securing the suitable cushioning property etc. with respect to the glass plate of a foamed resin sheet. That is, if the foaming ratio of the foamed resin sheet is less than 10 times, the foamed resin sheet becomes too hard, so that the required cushioning properties cannot be obtained, and the glass plate cannot be sufficiently protected. On the other hand, when the foaming ratio of the foamed resin sheet exceeds 40 times, the foamed resin sheet becomes too soft, and thus tearing is likely to occur, and handling during the packing operation becomes difficult. Therefore, if the expansion ratio of the foamed resin sheet is within the above numerical range, such a problem does not occur. In this case, the more preferable expansion ratio of the foamed resin sheet is 20 to 30 times.

Further, the glass plate used in the present invention, Ru glass plate der for flat panel display substrates.

  In other words, the glass plate for flat panel display substrates has a large impact on quality due to minute scratches and chipping, and since the increase in plate size is being promoted, it is buffering when the package is transported. Is extremely important. Therefore, as described above, if it is configured to provide sufficient buffering properties not only on the front and back surfaces of the glass plate but also on the end surface, it exhibits an excellent function as a packaging body for glass plates for flat panel display substrates. can do.

  Further, it is preferable that the glass plate has any one dimension in the vertical direction or the horizontal direction of 1500 mm or more, the other dimension is 1850 mm or more, and the thickness is 0.7 mm or less.

  Thus, if it is a large plate and a thin glass plate, chipping or cracking is likely to occur particularly during transportation, etc., but if it is a configuration that can provide sufficient buffering properties as described above, It is possible to appropriately cope with such an extremely thin glass plate.

  Furthermore, it is preferable that the glass plates are placed side by side in a vertical orientation.

  In detail, in consideration of cost reduction and resource saving, it has a bottom wall part and a back side wall part respectively located on the bottom side and the back side of the glass plate storage part in order to meet the request to reduce the packaging materials as much as possible. In addition, a plurality of glass plates are stored in a vertically parallel arrangement on a pallet opened at least on the upper surface side and the front side of the glass plate storage portion, and a foamed resin sheet is interposed between the glass plates. A configuration is preferable.

  In this case, the left and right sides of the glass plate storage part in the pallet may be open, in other words, the pallet may be a substantially L-shaped assembly consisting only of a bottom wall portion and a back wall portion, Alternatively, it may be an assembly having left and right side walls located on both the left and right sides of the glass plate storage part. Each glass plate is preferably placed on the bottom wall portion of the pallet and at the same time stood against the back side wall portion.

  In this way, since the pallet is open at least on the front side in addition to the upper surface side, the operation of storing the glass plates and the foamed resin sheets side by side in the glass plate storage portion of the pallet is at least the front side of the pallet. Can be done through the side. Therefore, there is no need to lift the glass plate to an unreasonably high position as in the case where the glass plates are stored vertically in a box-like container having an open top surface, which simplifies the storage operation and improves the work efficiency. Figured.

  In the above configuration, it is preferable to include a restraining body that restrains and supports a plurality of glass plates and a foamed resin sheet between them in a bundle on a pallet. In this case, the restraint body may be a band-shaped band or a stretch film.

  In this way, the plurality of glass plates and the resin sheets between them are surely and firmly restrained and supported without interposing a useless space on the pallet. Thus, the problem that the glass plate moves relative to the pallet or the backlash is effectively suppressed, and it is advantageous for making the package compact.

  In the above configuration, it is preferable to include an outer enclosure that covers the pallet and the package. In this case, the outer enclosure may be box-shaped, or the upper side, the front side, and if necessary, the left and right sides of the pallet glass plate storage part, respectively, with a lid and / or a backing plate. It may be configured such that a binding band or a stretch film is wound around these and the pallet.

  In this way, the protection of the pallet and the packing body is ensured, and the glass plate is more protected if the outer envelope is used to cover those that are restrained and supported by the restraining body as described above. More certainty is achieved. The outer enclosure may cover the entire pallet, or may cover only a predetermined part (for example, a part excluding the bottom wall) of the pallet.

  In the above configuration, the pallet is preferably configured to store a plurality of glass plates and a foamed resin sheet between them in an inclined manner. However, the configuration for storing them in a non-tilted state is not excluded.

  In this case, as an example of storing a plurality of glass plates and the foamed resin sheets between them in a tilted manner, a mounting surface for placing the glass plates on the bottom wall portion of the pallet is formed, and this mounting surface is Inclined by a predetermined angle (for example, greater than 0 ° and not more than 30 °) with respect to the horizontal plane, a standing surface for leaning the glass plate on the back side wall portion itself is formed. Inclining by the same predetermined angle can be mentioned. As another example, the bottom wall portion and the back side wall portion of the pallet are configured to include a storage member having a glass plate storage portion, and the mounting surface and the hanging surface of the storage member are the same as described above. Inclination is mentioned. As a matter of course, the mounting surface is inclined so that the front side portion is positioned above the back side portion, and the hanging surface is positioned so that the upper portion is positioned on the back side than the lower portion. Will be inclined.

  In this way, it is possible to improve the workability during storage by facilitating the work of placing the glass plates vertically during the storage work of each glass plate, and the work when taking out the glass plates We can expect improvement of sex.

  In the above configuration, the pallet is preferably configured so that the inclination angle of the plurality of glass plates and the foamed resin sheet between the glass plates can be varied. In this case, as means for making the inclination angle variable, as described above, the bottom wall portion and the back side wall portion of the pallet are configured so as to include a storage member having a glass plate storage portion. For example, the member may be tiltably attached to the base member of the bottom wall portion and the back wall portion. In addition, as for this storage member, the site | part in which the mounting surface was formed, and the site | part in which the standing surface was formed may be a different body, or may be integrated.

  In this way, the inclination angle of each glass plate stored in the pallet and the foamed resin sheet between each glass plate can be changed, so that, for example, work equipment or a robot for work depending on the factory where storage work and take-out work are performed In the case where the structures are different, it is only necessary to change the inclination angle in relation to the difference in the structure, so that convenience is improved and further improvement in workability can be expected.

As described above, according to the glass plate package of the present invention, since the foamed resin sheet is used as the resin sheet (cushion sheet), the foam structure has an impact generated between the glass plates. It can be sufficiently relaxed by appropriate characteristics. In addition, the foamed resin sheet is separated at each glass plate gap in the form of a sheet , the foaming ratio is 10 to 40 times, the thickness is 0.3 to 5.0 mm, and it is folded and overlapped twice. also has a softness which is not damaged, the upper edge and left and right edges or these glass plates, without other components, since the protruding only long dimension of greater than the thickness of the glass plate, the sheet After avoiding deterioration of workability such as when using a bag or using a bar, the corresponding edge of the glass plate can be protected by the protruding portion of the foamed resin sheet. The impact acting not only on the front and back surfaces but also on the end surfaces can be mitigated accurately.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 (a) is a perspective view schematically showing a glass plate and a resin sheet as constituent elements of a glass plate package (hereinafter simply referred to as a package) according to an embodiment of the present invention, and FIG. It is a schematic perspective view which shows typically the whole structure of the package. Moreover, FIG. 2 is a side view which shows the pallet which is a component of the package of this invention.

  As shown in FIG. 1 (a), a foamed resin sheet 2 is interposed between the glass plates 1. The glass plate 1 is a rectangular base plate glass (OA-10 manufactured by Nippon Electric Glass Co., Ltd.) for a liquid crystal display, in which one dimension in the vertical direction or the horizontal direction is 1500 mm, the other dimension is 1850 mm, and the thickness is 0.7 mm. The foamed resin sheet 2 is obtained by cutting a foamed polyethylene sheet (Miramat A manufactured by JSP Corporation) into a rectangle. This foamed resin sheet 2 is obtained by blending a polyethylene resin as a main raw material with an antistatic polymer and further containing a trace amount of polyethylene oxide as a water-soluble polymer, and has a thickness of 0.5 to 1.0 mm. The expansion ratio is 20 to 25 times, the dimension in either the vertical direction or the horizontal direction is 1550 mm, and the other dimension (the dimension after cutting) is 1875 mm.

  As shown in FIG. 1B, the glass plate 1 and the foamed resin sheet 2 are placed on, for example, a pallet to form a package 3. The packing body 3 has a substantially L-shaped pallet 6 composed of a bottom wall portion 4 and a back wall portion 5, and a plurality of glass plates 1 and each of them are placed in a glass plate storage portion 7 of the pallet 6. The foamed resin sheets 2 interposed between the two are stored vertically, and are bound and supported on the pallet 6 in a bundle by a binding band 8 as a restraining body.

  As shown in FIG. 2, the pallet 6 includes a bottom wall portion 4 including a bottom base member 9 and a bottom storage member 10, and a back side wall portion 5 including a back base member 11 and a back storage member 12. In addition, the horizontal bottom base member 9 and the vertical back base member 11 are fixed to form an L-shaped base member 13, and the bottom storage member 10 and the back storage member 12 are fixed to store an L-shape. A member 14 is formed. The space above the bottom storage member 10 in the L-shaped storage member 14 is a glass plate storage portion 7. Therefore, the upper surface portion of the bottom storage member 10 is a placement surface portion on which the glass plate 1 is placed, and the front portion of the back storage member 12 is a standing surface portion on which the glass plate 1 is leaned. In this case, the dimension of the pallet 6 in the vertical direction is set to 1.5 to 2.5 times the dimension in the front-rear direction (direction from the front side to the back side). Further, the plurality of glass plates 1 and the foamed resin sheet 2 stored in the L-shaped storage member 14 are covered with an outer enclosure 15 indicated by a chain line in FIG.

  FIG. 3 is an enlarged vertical sectional side view of a main part showing a first example of the internal state of the packaging body 3 according to this embodiment, and FIG. 4 is an enlarged cross-sectional plan view of the main part showing the first example. As shown in FIG. 3, a foamed resin sheet 2 that is separated for each gap is interposed between the glass plates 1, and each foamed resin sheet 2 is connected to the upper edge of each glass plate 1. Therefore, only a dimension longer than the thickness of the glass plate 1 is projected. And since the front and back surfaces of each glass plate 1 are in a state of slightly biting into contact with the surface of each foamed resin sheet 2, the adjacent protruding portions 2a of each foamed resin sheet 2 are mutually connected. The upper end surface of each glass plate 1 is covered with the protruding portion 2a. Thus, in addition to the contact resistance or adhesion between the front and back surfaces of each glass plate 1 and the surface of the foamed resin sheet 2, the upward movement of each glass plate 1 is caused by the presence of the protruding portion 2a of each foamed resin sheet 2. Is moderately controlled, and the upper end surface of each glass plate 1 is protected from impact and the like by the protruding portion 2a of the foamed resin sheet 2. Therefore, the foamed resin sheet 2 is effectively used as a cushioning material for the upper end surface of the glass plate 1. Further, as shown in FIG. 4, each foamed resin sheet 2 protrudes from the left and right side edges of each glass plate 1 by a length longer than the thickness of the glass plate 1. Thus, the left end surface and the right end surface of each glass plate 1 are also appropriately protected from impact and the like by the protruding portion 2a of the foamed resin sheet 2.

  FIG. 5 is an enlarged vertical sectional side view showing a second example of the internal state of the packing body 3 according to this embodiment, and FIG. 6 is an enlarged cross-sectional plan view showing an essential part of the second example. As shown in FIG. 5, in the second example as well, a foamed resin sheet 2 that is separated for each gap is interposed between the glass plates 1. In this second example, each foamed resin sheet 2 protrudes from the upper edge of each glass plate 1 by a dimension slightly longer than the thickness of the glass plate 1. 2b is bent in the same direction, and each protruding portion 2b can be brought into contact with the upper end surface of each glass plate 1 independently (that is, not overlapping). A cushioning material 16 having a thickness larger than that of the foamed resin sheet 2 is loaded above each protruding portion 2b, and the upper surface of each protruding portion 2b is in contact with the lower surface of the cushioning material 16. Yes. Therefore, the upper end surface of each glass plate 1 is in a state covered with the protruding portion 2b. Moreover, as shown in FIG. 6, also about the left-right both-sides edge of each glass plate 1, each protrusion part 2b of the foamed resin sheet 2 bends in the same direction, and each protrusion part 2b becomes independent one sheet at a time. Each glass plate 1 can be brought into contact with the left end surface and the right end surface. The outer side of each protruding portion 2b on both the left and right sides is loaded with a cushioning material 17 having a thickness greater than that of the foamed resin sheet 2, and each protruding portion is placed on the inner surface of each cushioning material 17. The outer surface of 2b is in contact. Therefore, also in the second example, the protruding portion 2b of the foamed resin sheet 2 is effectively used to protect the upper end surface, the left end surface, and the right end surface of the glass plate 1 from impact or the like.

  FIG. 7 is an enlarged vertical sectional side view of a main part showing a third example of the internal state of the packing body 3 according to this embodiment, and FIG. 8 is an enlarged cross-sectional plan view of the main part showing the third example. As shown in FIG. 7, in the third example as well, the foamed resin sheets 2 that are separated for each gap are interposed between the glass plates 1 one by one. In this third example, each foamed resin sheet 2 protrudes from the upper end edge of each glass plate 1 by a length that is several times or several tens of times as long as the thickness of the glass plate 1. The protruding portions 2c are bent in the same direction, and the protruding portions 2c are in contact with the upper end surface of each glass plate 1 in a state where the protruding portions 2c overlap each other. Therefore, the upper end surface of each glass plate 1 is in a state covered with the overlapping portion of the protruding portions 2c. Further, as shown in FIG. 8, the left and right side edges of each glass plate 1 are also bent in the same direction in the protruding portions 2 c of the foamed resin sheet 2, and the respective protruding portions 2 c overlap each other. The left end surface and the right end surface of the plate 1 can contact each other. Therefore, also in the third example, the protruding portion 2c of the foamed resin sheet 2 is effectively used to protect the upper end surface, the left end surface, and the right end surface of the glass plate 1 from impact or the like.

  In the first example, the second example, and the third example described above, the foamed resin sheet 2 is illustrated as protruding from the three edges of the upper edge, the left edge, and the right edge of the glass plate 1, Depending on the form of the package 3, it may protrude from only one edge, or may protrude from either edge. Moreover, it is preferable that these protrusion dimensions are in the range longer than the thickness of the glass plate 1, and are settled in the range of 0.5-100 mm, and it is 10-100 mm. More preferred.

  In addition, the above-mentioned pallet 6 is configured as follows in this embodiment. That is, as shown in FIG. 2, the upper end portion of the back storage member 12 is rotatably connected to the upper end portion of the back base member 11 so that the L-shaped storage member 14 can be tilted to the L-shaped base member 13. While being held, the L-shaped storage member 14 is configured to be fixed at a plurality of desired inclination angles as indicated by chain lines in FIG. Accordingly, each glass plate 1 is stored in a state inclined by a predetermined angle (for example, greater than 0 ° and 30 ° or less) with respect to the vertical plane, that is, in an inclined state in which the lower side is closer to the front side than the upper side, The inclination angle can be appropriately changed. Note that the portion where the L-shaped storage member 14 is rotatably connected to the L-shaped base member 13 does not have to be the above-described upper end portion, and may be an intermediate portion in the vertical direction or a lower end portion. Further, the bottom storage member 10 and the back storage member 12 of the L-shaped storage member 14 may be separated from each other. Therefore, both the members 10 and 12 may be tilted and fixed separately.

  In this embodiment, the back base member 11 of the L-shaped base member 13 is configured by fixing a crosspiece 11b to a rectangular frame-shaped body 11a as shown in FIG. 1 (b). The glass plate 1 and the foamed resin sheet 2 arranged in 14 are firmly restrained and supported on the pallet 6 by spanning the binding band 8 from the front side, the upper surface side, and the lower surface side to the crosspiece 11b. ing. The front surface of the glass plate 1 located at the front side end is covered with the foamed resin sheet 2, and the foamed resin sheet 2 is interposed between the glass plate 1 located at the back side end and the back housing member 12. ing. Further, the glass plate 1 and the foamed resin sheet 2 are covered with a packaging bag made of polyethylene resin or the like, a stretch film, or the like, and foreign matter such as dust and dust is prevented from entering between the two 6 and 7. .

  In this state, a predetermined number (for example, 100 to 500) of glass plates 1 are stored in the L-shaped storage member 14 and restrained and supported by the pallet 6 by the binding band 8, and the outer enclosure 15 shown by a chain line in FIG. Thus, for example, the upper part of the pallet 6 than the bottom base member 9 is covered. That is, the outer enclosure 15 covers the L-shaped storage member 14 and the upper surface side, the front surface side, and the left and right sides of the glass plate 1 stored therein, and the back surface side of the back base member 11 as necessary. It is configured. The outer enclosure 15 may be a box-like one whose upper part is covered with a lid, or the upper part is covered with a lid, and the rear side of the back base member 11 as needed, on the front side and the left and right sides. These may be fixed with a stretch film with the side covered with a backing plate, or the front side may be opened and closed by a door body.

  The package 3 having the above-described configuration is manufactured as follows. That is, in the clean room, after adjusting and fixing the inclination angle of the L-shaped storage member 14 shown in FIG. 2, the glass plates 1 and the foamed resin sheets 2 are alternately arranged vertically on the L-shaped storage member 14. Go. In this case, in order to interpose the foamed resin sheet 2 between the adjacent glass plates 1, for example, the following method is employed. That is, a roll body (not shown) formed by winding a raw material of a resin sheet having a lateral width longer than the thickness of the glass plate 1 and continuous in the vertical direction as described above is formed on the pallet 6. After placing the preceding glass plate 1 vertically on the L-shaped storage member 14, the resin sheet is pulled down from the roll body to a position covering the front side of the glass plate 1. Next, by placing the subsequent glass plate 1 vertically on the front side of the resin sheet, the resin sheet is sandwiched between the pair of glass plates 1. Under such a state, the foamed resin sheet 2 is placed on the glass plate. 1 is cut with a cutter or the like to a length corresponding to the vertical dimension of 1 (the length at which the protruding portion 2a described above is generated on the upper end when the lower end is aligned with the glass plate 1). By repeating such an operation, the foamed resin sheet 2 is interposed between each of the predetermined number of glass plates 1.

  Thereafter, the glass plate 1 and the foamed resin sheet 2 are bundled together with a binding band 8 (or a stretch film) and restrained and supported on the pallet 6, and then these are covered with an outer envelope 15, whereby the package body 3 is completed. In this case, the packaging body 3 may be manufactured entirely in a clean room, or after the glass sheet 1 is stored in the pallet 6, the packaging body 3 is made of a packaging bag such as a polyethylene resin or a stretch film. The work until it is covered with may be performed in the clean room, and the subsequent work may be performed outside the clean room.

  The following method may be used as a method of storing each glass plate 1 in the L-shaped storage member 14 and a method of interposing the foamed resin sheet 2 between the adjacent glass plates 1. That is, the pallet 6 is tilted and held so that the back base member 11 and the back storage member 12 of the back side wall portion 5 are horizontal, and the foamed resin sheets 2 and the glass plates 1 are alternately stacked in a horizontal posture. . In that case, after placing the preceding glass plate 1 on the L-shaped storage member 14, the resin sheet is pulled out from the roll body similar to the above so as to cover the upper surface of the glass plate 1, and the longitudinal dimension of the glass plate 1 After that, the foamed resin sheet 2 is cut at a position corresponding to, and then the subsequent glass plate 1 is placed on the upper surface of the foamed resin sheet 2. After such a work is repeated for all the predetermined number of glass plates 1, they are restrained and supported on the pallet 6 by the binding band 8 or the like, and then the pallet 6 is raised and the L-shaped storage member 14 is inclined. Subsequent operations are the same as described above.

  In the above embodiment, the present invention is applied to the case where the foamed resin sheet 2 separated for each gap is interposed between the glass plates 1. Even in such a case, the present invention can be applied. That is, as shown in FIG. 9, the foamed resin sheet 2 is continuously folded in a bellows shape without separating the foamed resin sheet 2 for each gap between the glass plates 1, and glass is formed by the folded part at the lower end. The plate 1 is placed so as to surround it, and the foamed resin sheet 2 is interposed between the glass plates 1 in a double state. And the folding | returning part of the upper end of the foamed resin sheet 2 has protruded from the upper end edge of the glass plate 1 only the dimension longer than the thickness of the glass plate 1 in the state which overlapped double. The double protruding portion 2d is not limited to the form shown in the figure, and similarly to the form shown in FIG. 5, the form that covers the upper end surface of each glass plate 1 by bending without overlapping, or the same as FIG. It is good also as a form which covers the upper end surface of each glass plate 1 by bending in the state which overlapped. A buffer material 18 having a thickness larger than that of the foamed resin sheet 2 is loaded at the bottom of each glass plate 1 and the foamed resin sheet 2. Further, in this case, as shown in FIG. 10, the double foamed resin sheet 2 is longer than the thickness of the glass plate 1 with the double foamed resin sheet 2 separated from the left and right side edges of each glass plate 1. Only the dimensions are protruding. The protruding portion 2d is not limited to the form shown in the figure, and may have a form as shown in FIG. 6 or FIG. And even if it is a case where the foamed resin sheet 2 is continuously folded back like a bellows in this way, the same effects as when the foamed resin sheet 2 is separated for each gap described above can be obtained. Can do.

  The size of the glass plate 1 that can be stored in the packing body 3 according to the above embodiment is not limited to the above-described one, and may be, for example, a size of 1000 × 1200 mm or more, or a size of 1500 × 1850 mm or more. Good. Further, the thickness of the glass plate 1 may be 0.7 mm or less (preferably 0.5 mm or more).

  The glass plate package of the present invention forms a glass plate used for manufacturing glass panels for various image display devices such as liquid crystal displays, plasma displays, electroluminescence displays, field emission displays, and various electronic display functional elements and thin films. As a glass plate used as a base material for carrying out, it is suitable as a packaging body for a glass plate that requires a high clean surface.

Fig.1 (a) is a perspective view which shows typically the glass plate and resin sheet which are the components of the glass plate package which concerns on embodiment of this invention, FIG.1 (b) is an example of a glass plate package. It is a schematic perspective view shown typically. It is a side view which shows the pallet used for the glass plate package which concerns on embodiment of this invention. The principal part expansion vertical side view which shows the 1st example of the internal state of the glass plate package which concerns on embodiment of this invention It is a principal part expansion cross-sectional plan view which shows the 1st example of the internal state of the glass plate package which concerns on embodiment of this invention. It is a principal part expansion vertical side view which shows the 2nd example of the internal state of the glass plate package which concerns on embodiment of this invention. It is a principal part expanded transverse plan view which shows the 2nd example of the internal state of the glass plate package which concerns on embodiment of this invention. It is a principal part expansion vertical side view which shows the 3rd example of the internal state of the glass plate package which concerns on embodiment of this invention. It is a principal part expanded transverse plan view which shows the 3rd example of the internal state of the glass plate package which concerns on embodiment of this invention. It is a principal part expansion vertical side view which shows the internal state of the glass plate package which concerns on other embodiment of this invention. It is a principal part expanded transverse plan view which shows the internal state of the glass plate package which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Glass plate 2 Foamed resin sheet 2a Protrusion part 2b Protrusion part 2c Protrusion part 2d Protrusion part 3 Packing body (glass plate packing body)
4 Bottom wall part 5 Back wall part 6 Pallet 7 Glass plate storage part 8 Binding band (restraint body)
15 Outer enclosure

Claims (5)

In a glass plate package that accommodates multiple flat panel display substrate glass plates stacked vertically, the glass plates are separated between each glass plate in the form of a sheet, and foamed. A foamed resin sheet having a magnification of 10 to 40 times , a thickness of 0.3 to 5.0 mm, and having a softness that does not break even when folded back and overlapped , is used for the upper edge and the left and right edges of the glass plate. From the entire length of each edge of the foamed resin sheet corresponding to those edges, it protrudes without interposing other components, and the protrusion size is the thickness of the glass plate. A glass plate package characterized in that it is longer than the dimensions, and the front and back surfaces of each glass plate are in contact with the surface of each foamed resin sheet and slightly bite.   The glass plate package according to claim 1, wherein the protruding portion of the foamed resin sheet covers an edge of the glass plate.   The glass sheet package according to claim 1 or 2, wherein the foamed resin sheet contains polyethylene as a main component. The glass according to any one of claims 1 to 3, wherein the glass plate has a longitudinal dimension or a lateral dimension of 1500 mm or more, the other dimension of 1850 mm or more and a thickness of 0.7 mm or less. Board package. The glass plate package according to any one of claims 1 to 4 , wherein the glass plates are arranged in parallel vertically .

Images