JP2011063274A - Glass plate packing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass plate packing body formed by joining a cushioning material made of resin and a frame member made of metal and configured to prevent separation of the cushioning material from the frame member. <P>SOLUTION: A polyethylene sheet 30 forming a rear panel 12 for the glass plate packing body 10 has many grooves 32, 32... formed in a surface joined to the frame member 20. Thus, even when the polyethylene sheet 30 thermally deforms more greatly than the frame member 20, the thermal deformation difference is absorbed by the grooves 32, thereby preventing separation of the polyethylene sheet 30 from the frame member 20. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a glass plate package.

  In recent years, there has been a growing need for larger glass plates used in flat panel displays such as glass substrates for liquid crystal displays and glass substrates for plasma displays. Conventionally, as a glass plate package for transporting such a large glass plate, Patent Documents 1 and 2 disclose a vertically placed glass plate package.

  The glass plate package includes a pedestal, a bottom plate, a frame member, a back plate (back plate), and the like. A mounting surface is formed on the upper surface of the pedestal, and this mounting surface is finished to a predetermined flatness by machining. The bottom plate is installed on the mounting surface at a predetermined inclination angle, and the lower edge of the glass plate is placed on the bottom plate. Similarly, the frame member is erected at a predetermined angle on the mounting surface, and a back plate is attached to the frame member, and the surface of the glass plate is received by the back plate.

  Further, the glass plate package of Patent Document 2 is provided with a side pressing member that abuts against a side portion of the glass plate received by the back plate and regulates the side movement of the glass plate. Therefore, the glass plate is stacked on the bottom plate with the inclination angle of the back plate and packed in the glass plate package in a state where the lateral displacement is regulated by the side pressing member.

  The back plates of Patent Documents 1 and 2 are made of a resin cushion material in order to prevent damage due to contact with the glass plate when the glass plate is placed. Patent Document 1 discloses a polyethylene cushion material, and Patent Document 2 discloses a cushion material such as rubber or hard foamable resin. These cushion materials are fixed to the steel frame member with an adhesive.

JP 2005-132490 A JP 2005-298062 A

However, the conventional glass plate package has a drawback that the cushion material is peeled off from the frame member in summer and winter due to the difference in linear expansion coefficient between the resin cushion material and the steel frame member. For example, the linear expansion coefficient of a polyethylene cushion material is 10 to 20 × 10 ⁻⁵ / ° C., and the linear expansion coefficient of a steel frame member is 12 × 10 ⁻⁶ / ° C. Due to such a difference, in the summer and winter, the cushion material is thermally deformed 10 to 20 times larger than the frame member, and thus the problem that the adhesive surface is peeled off due to the difference of the thermal deformation has occurred. When the adhesive surface is peeled off, the peeled surface becomes a dust generation source, and there is a problem that dust generated from the adhered surface adheres to the glass plate when the glass plate is packed and unpacked to contaminate the glass plate. Therefore, when the cushion material is peeled off from the frame member, the cushion material has to be replaced or repaired each time, which takes time and effort.

  The present invention has been made in view of such circumstances, and is a glass plate package in which a resin cushion material and a metal frame member are bonded, and the cushion material is peeled off from the frame member. It aims at providing the glass plate package which can prevent.

  The present invention provides a pedestal having a mounting surface formed on an upper surface, a bottom plate that is provided at a predetermined angle on the mounting surface of the pedestal and supports a lower edge of a glass plate, and a mounting surface of the pedestal. A glass plate comprising a metal frame member standing upright at a predetermined angle, and a resin cushion material whose back surface is bonded to the frame member and whose surface serves as a receiving surface of the glass plate In the package, there is provided a glass plate package characterized in that a groove is provided on the back surface of the cushion material.

  According to the present invention, a groove is provided on the back surface of the resin cushion material, that is, on the surface on the adhesive surface side with the metal frame member. Thereby, even if the cushion material is thermally deformed to a greater extent than the frame member in summer and winter, the thermal deformation difference is absorbed by the groove. That is, when the cushion material is thermally expanded larger than the frame member, the thermal deformation difference is absorbed by expansion of the opposing wall surface of the groove. On the contrary, when the cushion material is thermally contracted to a greater extent than the frame member, the thermal deformation difference is absorbed by contracting the opposing wall surface of the groove. Due to the thermal deformation difference absorbing action of the grooves, the force for peeling the cushion material and the frame member is greatly reduced. Thereby, it can prevent that a cushion material peels from a frame member. Further, since the adhesion surface does not peel off, dust generation does not occur, and thus contamination of the glass plate due to dust generation from the adhesion surface can be prevented.

  Moreover, it is preferable that the said groove | channel of this invention is provided in the inner surface side except the edge part of the said cushion material.

  When a groove is formed so as to penetrate the end of the cushion material, the groove is exposed to the outside, and the exposed groove becomes a dust generation source, and the glass plate may be contaminated with dust generated therefrom. Therefore, as in the present invention, since the groove is formed on the inner surface side excluding the end portion of the cushion material and the groove is not exposed to the outside, the glass plate is not contaminated by dust from the groove.

  Moreover, it is preferable that the said groove | channel of this invention is equipped with the grid | lattice form.

  According to the present invention, by providing the grooves in a lattice shape, the expansion and contraction of the cushion material acting in the radial direction around the center of the cushion material can be efficiently absorbed.

  The frame member of the present invention is preferably made of steel, and the cushion material is preferably made of polyethylene or ethylene-vinyl acetate copolymer resin.

  According to the present invention, since the frame member is made of steel, the strength to support the surface of the glass plate can be reliably obtained. Further, since the cushion material is made of polyethylene or ethylene vinyl acetate copolymer resin, impact resistance can be reliably obtained, and groove processing can be easily performed.

  As described above, according to the glass plate package of the present invention, since the groove that absorbs the difference in thermal expansion and contraction from the frame member is formed on the surface of the cushion material on the bonding surface side with the frame member, the cushion material Can be prevented from peeling off from the frame member.

Whole perspective view of glass plate package of embodiment Expanded sectional view showing the lower structure of the back and bottom plates Expanded sectional view of the main part of the back plate 3 is an enlarged cross-sectional view of the main part when the cushion material shown in FIG. 3 is thermally expanded. The principal part expanded sectional view when the cushion material shown in FIG. 3 heat-shrinks FIG. 1 is an overall perspective view of the lower lateral holding member shown in FIG. Assembly perspective view of lower lateral holding member of embodiment The perspective view which looked at the lower side pressing member of an embodiment from the back side Side view of a glass plate package provided with an upper lateral holding member

  Hereinafter, a preferred embodiment of a glass plate package according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an overall perspective view of a glass plate package 10 according to an embodiment. FIG. 2 is an enlarged cross-sectional view showing a lower structure of a back plate 12 and a bottom plate 14 to be described later.

  A glass plate package 10 shown in FIG. 1 is a glass plate package for packing a glass plate for a plasma display in a vertically placed state. Moreover, the glass plate package 10 is a glass plate package that packs a large-sized glass plate capable of taking four or six 42-inch glass plates, for example, with a slip sheet interposed therebetween. Furthermore, the glass plate packing body 10 is a packing body that packs the glass plate in a state of leaning diagonally. In addition, the use of the glass plate package 10 is not limited to this, and can be applied as a package of various glass plates. Further, the glass plate is packaged and shipped in the glass plate package 10 in a state of being packaged in the sheet 82 shown in FIG.

The glass plate package 10 is provided with a pedestal 18 having a flat mounting surface 16 formed on the upper surface and an inclination of about 15 ° (θ ₁ ) with respect to the mounting surface 16 as shown in FIG. A flat bottom plate 14 on which the lower edge is placed is provided. Further, the glass plate package 10 is a steel frame member (elevated by tilting at an angle of about 105 ° with respect to the mounting surface 16 of the base 18 (about 90 ° (θ ₂ ) with respect to the bottom plate 14) ( Linear expansion coefficient: 12 × 10 ⁻⁶ / ° C.) 20. Further, the glass plate package 10 includes a flat resin back plate (cushion material) 12 that is fixed to the front surface of the frame member 20 with an adhesive and receives the surface of the glass plate.

Further, the glass plate package 10 includes a bottom plate receiving member 22 that supports the bottom plate 14 on the mounting surface 16 at a predetermined angle (θ ₁ ). In addition, the glass plate package 10 has a frame-shaped frame receiving member 24 that stands on the mounting surface 16 and supports the back surface of the frame member 20 as shown in FIG.

  The pedestal 18 is configured by welding a large number of short and long steel materials in the vertical and horizontal directions and in the height direction, and the mounting surface 16 is processed to a predetermined flatness by machining (grinding) after the welding assembly. Further, openings 26, 26 into which forklift claws (not shown) are inserted and removed are formed in the front-rear surface of the base 18.

  The slip sheet described above is a sheet sandwiched between glass plates in order to prevent the glass plates from directly contacting each other. This slip sheet has a paper smoothness of 20 seconds or less, preferably 18 seconds or less, in order to prevent the resin content contained in the slip sheet from being transferred to the surface of the glass plate and causing paper texture, burns, and dirt. The surface is rough. Thereby, since a contact area with the surface of a glass plate reduces, the transfer of a resin part can be prevented. Further, by setting the resin content of the paper to 0.1% or less, preferably 0.05% or less, the quality of the glass plate can be maintained by the combined action with the rough surface. Therefore, even when particles or the like (pulp or scraps of minute resin, etc.) are generated due to the interleaving paper, the particles on the surface of the glass plate in combination with the glass plate leaning on the glass plate packing body 10 and packing. Does not adhere and is easily removed by subsequent cleaning of the glass plate.

As shown in FIG. 2, the rectangular back plate 12 attached to the frame member 20 includes a polypropylene foam sheet (trade name: Sumiceller (registered trademark), linear expansion coefficient: 10-12 × 10 ⁻⁵ / ° C.) 28 and polyethylene. A double sheet structure composed of a sheet (linear expansion coefficient: 10 to 20 × 10 ⁻⁵ / ° C.) 30 is formed. The polypropylene foam sheet 28 is a member that receives the surface of the laminated glass plate. The surface of the polyethylene sheet 30 is attached to the back surface of the polypropylene foam sheet 28. The back surface 34 of the polyethylene sheet 30 is fixed to the frame member 20 with an adhesive.

  On the back surface 34 of the polyethylene sheet 30, a plurality of vertical and horizontal grooves 32, 32,... These grooves 32, 32... Have, for example, a 23 mm thick polyethylene sheet 30 having a width of 5 mm and a depth of 5 mm, and are provided when the polyethylene sheet 30 is molded or by post-processing. is there. The number, width, and depth of the grooves 32 are not limited to the number and dimensions, but any number and width can be used as long as they can absorb a difference in thermal deformation between the frame member 20 and the polyethylene sheet 30 described later. The dimensions may be used. Moreover, about the width | variety of the groove | channel 32, 3-10 mm is preferable and 5-8 mm is more preferable. About the depth of the groove | channel 32, 3-10 mm is preferable and 5-8 mm is more preferable.

  Next, the operation of the back plate 12 configured as described above will be described.

  As described above, a plurality of grooves 32, 32... Are formed on the back surface 34, which is the adhesive surface side of the polyethylene sheet 30 with the frame member 20. Thereby, even if the polyethylene sheet 30 is thermally deformed more than the frame member 20 in summer and winter, the difference in thermal deformation is absorbed by the grooves 32.

  More specifically, as shown in the cross-sectional view of FIG. 3, the polyethylene sheet 30 has a required portion of the back surface 34 formed with the groove 32 bonded to the frame member 20 with an adhesive. When the polyethylene sheet 30 is thermally expanded larger than the frame member 20 on a day with a high temperature such as in summer, the opposing wall surface of the groove 32 expands inside the groove 32 as shown in the cross-sectional view of FIG. Thermal deformation difference is absorbed. On the contrary, when the polyethylene sheet 30 is thermally contracted to a greater extent than the frame member 20 on a day when the temperature is low, such as during winter, the opposing wall surface of the groove 32 contracts toward the outside of the groove 32. Thermal deformation difference is absorbed.

  Due to the heat deformation difference absorbing action of the groove 32, the polyethylene sheet 30 is peeled off from the frame member 20 because the force for peeling the polyethylene sheet 30 and the frame member 20 hardly acts on the adhesive surface. Can be prevented.

  Moreover, according to this back plate 12, since the said adhesion surface does not peel, dust generation does not occur, Therefore, the contamination of the glass plate resulting from the dust generation from an adhesion surface can also be prevented.

  On the other hand, the groove | channel 32 formed in the polyethylene sheet 30 is formed in the inner surface side except the edge part of the polyethylene sheet 30 like FIG. On the contrary, when the groove 32 is formed so that the groove 32 penetrates the end side of the polyethylene sheet 30, the end opening of the groove 32 is exposed to the outside. For this reason, the end opening of the exposed groove 32 becomes a dust generation source, and the glass plate may be contaminated with dust generated therefrom.

  Therefore, as shown in FIG. 1, the groove 32 is formed on the inner surface side excluding the edge of the polyethylene sheet 30, and the groove 32 is formed so as not to be exposed to the outside, so that the glass plate is contaminated with dust from the groove 32. Can be prevented.

  Further, since the grooves 32, 32... Are formed in a vertical and horizontal lattice shape, the expansion and contraction of the polyethylene sheet 30 acting in the radial direction around the center of the polyethylene sheet 30 is efficiently absorbed by the grooves 32, 32. be able to. In addition, the formation shape of the groove | channel 32 is not limited to a grid | lattice form, The shape which cross | intersects diagonally may be sufficient.

The frame member 20 of the embodiment is made of steel (linear expansion coefficient: 12 × 10 ⁻⁶ / ° C.), and the polyethylene sheet 30 is a polyethylene sheet (linear expansion coefficient: 10-20 × 10 ^−5). / ° C) is used. Thus, the intensity | strength which supports the surface of a glass plate can be obtained reliably by making the frame member 20 into steel. In addition, by configuring the back plate 12 with the polyethylene sheet 30, it is possible to reliably obtain impact resistance and to easily process the groove 32. In addition, it can replace with the polyethylene sheet 30, and the same effect can be acquired even if it uses the sheet material made from ethylene vinyl acetate copolymer resin. Moreover, although the single backplate 12 is shown in FIG. 1, it is good also as a single large size backplate 12 combining several small size backplates divided | segmented into 2 or more sheets.

  On the other hand, the bottom plate 14 of the glass plate package 10 has a double sheet structure as shown in FIG. The upper layer of the bottom plate 14 is composed of a polypropylene foam sheet 36 and the lower layer is composed of a foamed polyethylene sheet 38. Appropriate hardness and good cushioning properties can be obtained by the upper polypropylene foam sheet 36, and good shock absorption for the glass plate can be obtained by the lower foamed polyethylene sheet 38.

  In addition, the polypropylene foam sheet 36 and the foamed polyethylene sheet 38 are bonded by an adhesive, but it is preferable to perform a primer treatment on both of the bonded surfaces or one of the bonded surfaces in order to improve the adhesiveness. The lower surface of the foamed polyethylene sheet 38 is bonded to the metal bottom plate receiving member 22 with an adhesive. Therefore, it is preferable to form grooves 40, 40... On the lower surface of the foamed polyethylene sheet 38 as indicated by broken lines in FIG. Thereby, the deformation of the foamed polyethylene sheet 38 due to the thermal expansion / contraction difference between the foamed polyethylene sheet 38 and the bottom plate receiving member 22 is absorbed by the grooves 40, 40. Therefore, it is possible to prevent the foamed polyethylene sheet 38 from peeling from the bottom plate receiving member 22.

  6 is an overall perspective view of the lower lateral pressing member 42A shown in FIG. 1, FIG. 7 is an assembled perspective view of the lower lateral pressing member 42A, and FIG. 8 is a back side view of the lower lateral pressing member 42A shown in FIG. It is the perspective view seen from.

  As shown in these drawings, the lower lateral pressing member 42A is composed of two large and small main bodies 44 and 46 formed in a plate shape, an engagement plate 48, a handle 50, a pressing plate 52, and the like.

  The main bodies 44 and 46 have a shape obtained by bending a metal plate material having a predetermined shape by press molding, and are connected by bolts 54, 54. Further, a plurality of long holes 60, 60... Are opened in flanges 56, 58 formed bent at the lower portions of the main bodies 44, 46. The main bodies 44 and 46 are fixed to the mounting surface 16 of the base 18 by bolts (not shown) inserted through the long holes 60, 60. Although the long hole of the main body 46 is not shown, this long hole is formed in the same manner as the long hole 60 of the main body 44. Further, the attachment positions of the main bodies 44 and 46 with respect to the mounting surface 16 can be finely adjusted by the long holes 60.

The upper edge portion 44A of the main body 44 is inclined at substantially the same angle as the inclination angle (θ ₁ ) of the bottom plate 14 shown in FIG. The pocket plate 62 is fixed to the upper portion of the main body 46 along the inclination angle of the upper edge portion 44A, and both bent end portions are fixed. Thereby, a slit-like pocket 64 is formed between the pocket plate 62 and the upper portion of the main body 46. A rectangular engagement plate 48 shown in FIG. 7 is inserted into the pocket 64 as shown in FIGS.

  A nut 66 that is nitrided and has increased hardness is embedded in the center of the engagement plate 48. A screw 68 that is an axis of the handle 50 is screwed onto the nut 66. The tip of the screw 68 passes through the nut 66 and is in contact with the substantially central portion of the holding plate 52.

  Further, guide shafts 70A and 70B are fixed to both sides of the holding plate 52. The guide shafts 70A and 70B are fixed in parallel to the screws 68, and holes 72 (one hole formed on both sides of the engagement plate 48). (Only 72 is shown).

  Furthermore, the upper edge portion 46A of the main body 44 and the upper end portion 62A of the pocket plate 62 have a U-shaped groove 74 for releasing the screw 68 when the engagement plate 48 is fitted into the pocket 64, and a guide shaft 70A. , 70B, and U-shaped grooves 76A, 76B are formed respectively. In addition, the code | symbol is abbreviate | omitted to the groove | channel on the main body 44 side. A rectangular pad 78 made of resin is attached to the inner side surface of the pressing plate 52, and the pad 78 is brought into contact with the side end surface of the glass plate.

  According to the lower lateral holding member 42A configured as described above, when the handle 50 is rotated in the direction shown in FIG. 6, the holding force is reduced by the feeding action of the screw 68 and the straight guide action of the guide shafts 70A and 70B. The plate 52 is moved toward the side end surface of the glass plate. Then, after the pressing plate 52 contacts the side end surface of the glass plate, the handle 50 is tightened with a predetermined strength. The lateral pressing member 42B has a symmetrical shape with the lateral pressing member 42A and has the same configuration, and therefore description thereof is omitted. Accordingly, the side end surfaces of the glass plate are sandwiched between the pair of lateral pressing members 42 </ b> A and 42 </ b> B shown in FIG. 1, and the glass plate is fixed to the glass plate package 10.

  When the glass plate package 10 is transported by the transport vehicle, vibration from the glass plate is applied to the nut 66 through the holding plate 52 and the screw 68, but the nut 66 is nitrided to increase the hardness. 66 is not damaged. Thereby, since the clamping force of the glass plate by the pressing plate 52 is maintained, the glass plate can be transported stably.

  FIG. 9 shows a side view of the glass plate package 10 provided with the upper lateral pressing member 80.

  A large number of glass plates stacked on the glass plate package 10 are packaged in a sheet 82, and a rectangular cushioning material 84 having a predetermined thickness is placed on the surface, and a front frame is placed on the surface. 86 is covered. A lower end portion of the front frame 86 is engaged with the pedestal 18, is tilted with the lower end portion as a fulcrum, and is in contact with the surface of the cushioning material 84.

  The upper lateral pressing member 80 is in contact with the side end portion of the glass plate via the sheet 82 in a state where the base end portion is engaged with the frame member 20 and is cantilevered.

  By the way, the upper lateral holding member 80 and the front frame 86 may be fixed to the frame member 20, respectively, but in that case, the fixing member becomes individual and the number of parts increases. Therefore, in the embodiment, as shown in FIG. 9, a hook 88 is provided on the upper side portion of the front frame 86, and a belt 90 is hung on the hook 88. The belt 90 is disposed so as to cross the upper lateral pressing member 80, and the end of the belt 90 is connected to the frame member 20 via a ratchet type hoisting device 92.

  Therefore, by driving the ratchet type hoisting device 92 and winding up the belt 90, the front frame 86 is fixed to the frame member 20 by the tension of the belt 90. Then, the upper lateral pressing member 80 is pressed against the sheet 82 by the stretched belt 90. Thereby, the upper lateral pressing member 80 is firmly fixed to the frame member 20.

  Therefore, according to the embodiment, the upper lateral pressing member 80 and the front frame 86 can be fixed to the frame member 20 by the single belt 90.

  The upper side pressing member 80, the hook 88, the belt 90, and the ratchet type hoisting device 92 are also provided on the surface opposite to the surface shown in FIG.

  DESCRIPTION OF SYMBOLS 10 ... Glass plate package, 12 ... Back plate, 14 ... Bottom plate, 16 ... Mounting surface, 18 ... Base, 20 ... Frame member, 22 ... Bottom plate receiving member, 24 ... Frame receiving member, 26 ... Opening, 28 ... Polypropylene Foam sheet, 30 ... polyethylene sheet, 32 ... groove, 34 ... adhesion surface, 36 ... polypropylene foam sheet, 38 ... foam polyethylene sheet, 40 ... groove, 42A, 42B ... lower lateral pressing member, 44 ... main body, 46 ... main body, 48 ... engaging plate, 50 ... handle, 52 ... holding plate, 54 ... bolt, 56 ... flange, 58 ... flange, 60 ... long hole, 62 ... pocket plate, 64 ... pocket, 66 ... nut, 68 ... screw, 70A, 70B ... guide shaft, 72 ... hole, 74 ... groove, 76A, 76B ... groove, 78 ... pad, 80 ... upper lateral pressing member, 82 ... sheet 8, 84 ... buffer material, 86 ... Frame, 88 ... hook, 90 ... belt, 92 ... ratchet Shikimaki on the device

Claims (4)

A pedestal having a mounting surface formed on an upper surface; a bottom plate provided at a predetermined angle on the mounting surface of the pedestal and supporting a lower edge of the glass plate; and a mounting surface of the pedestal at a predetermined angle. In a glass plate package comprising a metal frame member standing upright and a resin cushion material whose back surface is bonded to the frame member and whose surface is a receiving surface of the glass plate,
A glass plate package comprising a groove on a back surface of the cushion material.   The glass plate package according to claim 1, wherein the groove is provided on an inner surface side excluding an end portion of the cushion material.   The glass plate package according to claim 1 or 2, wherein the grooves are provided in a lattice shape.   The glass plate package according to claim 1, 2, or 3, wherein the frame member is made of steel, and the cushion material is made of polyethylene or ethylene-vinyl acetate copolymer resin.

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