JP5247851B2 - Box for display device glass substrate packaging - Google Patents

Description

  The present invention relates to a box for packaging a glass substrate of a display device. More specifically, the advantage of the foamable resin is maximized through a slot plate made of a non-foamable material of PET (Polyethylene Terephthalate) resin and detachable. The present invention relates to a display device glass substrate packaging box that can minimize the occurrence of substrate contamination and surface fine scratches.

  In general, a glass substrate used in a display device such as a liquid crystal display device (LCD), a plasma display panel (PDP), and an organic EL is stored in a box for transportation and storage. The glass substrates are supported in a vertically standing state so as not to contact each other.

  Such a display device glass substrate packaging box is manufactured by injection molding a box case made of non-foamable resin such as polyvinyl chloride (PVC) or ABS resin. Since the substrate packaging box is relatively heavy and has an insufficient ability to mitigate the impact, there may be a problem that the glass substrate is damaged in the process of transporting the glass substrate.

  In addition, when carrying a separate cushioning material such as cardboard inside the box, it may be possible to protect the glass substrate from vibration and external impact, but such a cushioning material is difficult to use repeatedly. There is a problem that logistics costs increase.

  In order to overcome the above-described problems, a method of manufacturing and using a packaging box with a polyethylene or polypropylene type foaming resin instead of a non-foaming resin is widely used.

  FIG. 1 is a perspective view showing a conventional display device glass substrate packaging box manufactured using a foamable resin. Referring to FIG. 1, a box body 1 made of foam plastic having a rectangular parallelepiped shape with an open top, and a box lid made of foam plastic (not shown) covering the open top of the box body 1. It is made up of. Projections 3 and substrate insertion grooves 5 are alternately formed along the height direction at regular intervals on the inner wall surfaces of the pair of wall bodies facing each other of the box body 1.

  In this way, a large number of substrate insertion grooves 5 are formed by a large number of protrusions 3 formed on the inner wall surface of the box body 1, and the glass substrate housed in the box body 1 has a pair of substrate insertion grooves 5 facing each other. After being inserted in between, it is compressed by the protrusion 3 to maintain the state of being housed and fixed inside the box body 1.

  When the entire glass substrate packaging box is manufactured and used only with foaming resin, it is much lighter than the non-foaming plastic box described above, and is easy to transport, especially when transporting the packaging box. It has an excellent buffering function to reduce vibrations and external impacts, and has the advantage of preventing damage to the glass substrate to the maximum.

  However, the packaging box made of foamed plastic described above has the following weak points when packaging a display device glass substrate that requires excellent surface quality, which is not a general plate glass.

  That is, the foamed plastic box is more easily charged than the non-foamed plastic box, and foreign substances (particles) adhering to the substrate insertion groove 5 and the fixed projection 3 are easily transferred to the glass substrate, and organic matter stains ( Stain of the substrate, such as the occurrence of (Stain), was induced. In addition, when the glass substrate is inserted into the substrate insertion groove 5, fine scratches are generated on the glass substrate due to the high friction between the glass substrate and the foaming resin fixing protrusion 3 and the strain applied to the glass substrate. As a result, the surface roughness of the glass substrate was poor.

  As described above, if the entire display device glass substrate packaging box is made of foamable resin, there is an advantage that it is easy to carry, but there is a risk of causing substrate contamination and poor surface roughness. It acted as a main factor that caused variations in the threshold voltage value of the process substrate, reduced the yield, and could lead to product defects. In addition, since the fixed projection 3 and the substrate insertion groove 5 protruding from the foamed plastic packaging box are not easily cleaned, organic substances and other foreign substances cannot be completely removed when the box is reused. Acted as a major cause of increased soiling.

JP 2008-280062 A JP 2008-030756 A

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an advantage of configuring the display device glass substrate packaging box with a foamable material, and the weakness of such a foamed plastic box. Since the problem of surface roughness due to the contamination of the substrate and fine scratches due to the transfer of organic matter and other foreign matter, which were the points, can be prevented, and only the element that fixes the glass substrate can be easily separated from the box body individually. It is an object of the present invention to provide a display device glass substrate packaging box that can be easily and completely cleaned for reuse.

The display device glass substrate packaging box according to the present invention has a box body composed of a wall body and a bottom plate so that the upper portion is opened and a storage space for the glass substrate is provided therein, and a height direction on one surface. in the box body of the glass substrate packing box containing a pair of slots plate for fixing by supporting both side corner portions of a glass substrate to be housed inside through projecting the formed number of fixed projections to extend Te, the box The main body includes a locking step formed so as to protrude from the upper end surfaces of at least a pair of wall members facing each other, and the slot plate has a `` ┐ '' at the upper end portion of the opposite surface on which the fixing protrusion is provided. A cross-sectional locking portion is provided, and the “┐” -shaped locking portion is inserted into the locking step and is detachably attached to the box body. Coupled, said box body is foamed forming a foamed resin material, said slot plate PET (Polyethylene Terephthalate), amorphous PET (A-PET: Amorphous- Polyethylene Terephthalate) and PET-G (Polyethylene Terephthalate Glycol) resin It is characterized by being formed by at least any one selected from.

  According to the display device glass substrate packaging box according to the present invention, the box body is manufactured by a foamable resin system, and the slot plate for fixing the glass substrate is configured to be detachable from the box body. The box can be easily and completely cleaned for reuse.

  Unlike the box body material, the removable slot plate is made of a non-foaming material such as a PET resin, making the most of the advantages of foaming resin while making a conventional packaging box made of foamed plastic. Thus, a remarkable effect can be obtained that the disadvantages such as the contamination of the substrate and the fine scratches on the surface, which have become problems, can be prevented.

FIG. 1 is a perspective view showing a conventional display device glass substrate packaging box manufactured using a foamable resin. FIG. 2 is an exploded perspective view showing a mechanism configuration of the display device glass substrate packaging box according to the first embodiment of the present invention. 3A and 3B are views showing various embodiments of the cross-sectional configuration of the slot plate of FIG. FIG. 4 is a combined perspective view of the display device glass substrate packaging box on which the slot plate according to Embodiment 1 of the present invention is mounted. FIG. 5 is a graph showing the analysis results of the surface components of the A-PET slot plate according to the present invention. FIG. 6 is a measurement graph obtained by analyzing the surface component of the glass substrate in contact with the PET slot plate according to the invention. FIG. 7 is a graph showing the analysis results of the surface components of the PET-G slot plate according to the present invention. FIG. 8 is an exploded perspective view showing the mechanism configuration of the display device glass substrate packaging box according to the second embodiment of the present invention. FIG. 9 is a partial cross-sectional view of a display device glass substrate packaging box on which the slot plate of FIG. 8 is mounted. 10 (a), (b), (c), and (d) are cross-sectional views of the fixing protrusion provided with the embossing of the present invention. FIG. 11 is an exploded perspective view showing a mechanism configuration of a display device glass substrate packaging box according to Embodiment 3 of the present invention. 12 is a top side view of the display device glass substrate packaging box to which the slot cap of FIG. 11 is coupled.

  The box for packaging a display device glass substrate according to the present invention is separated from a box body made of a foamable resin system and is detachable from the inside. Through a slot plate made of a non-foamable resin system containing PET, the foamable resin This paper presents the technical features that can minimize the substrate contamination and surface roughness defects that have been a problem with conventional foamed plastic packaging boxes, while making full use of the advantages of the above.

  Hereinafter, preferred embodiments, advantages, and features of the present invention will be described in detail with reference to the accompanying drawings.

  2 is an exploded perspective view showing the mechanism configuration of the display device glass substrate packaging box according to the first embodiment of the present invention. FIGS. 3A and 3B are cross-sectional configurations of the slot plate 20 of FIG. It is a figure which shows various embodiment of these.

  Referring to FIG. 2, the display device glass substrate packaging box according to the first embodiment of the present invention includes a box body 10, a box lid (not shown) that covers an open upper portion of the box body 10, and A slot plate 20 configured to be detachably connectable to the inside of the box body 10 is included.

  The box body 10 according to the first embodiment of the present invention is a container that houses a glass substrate and protects the glass substrate from the external environment and external impact, and is open at the top and includes a glass substrate housing space inside. Thus, it is comprised by the case shape which consists of wall body 13a, 13b, 14a, 14b, and a baseplate, Preferably, it is manufactured by a rectangular parallelepiped shape.

  In the following, for the clear explanation of the present invention, the box body 10 having a rectangular parallelepiped shape including a pair of lateral wall bodies 13a and 13b and a pair of vertical wall bodies 14a and 14b will be described as an example. The configuration and characteristics will be described. For reference, the “pair of lateral wall bodies” means a pair of wall bodies facing each other in the peripheral portion of the box body 10 having a rectangular parallelepiped shape, and the “pair of longitudinal wall bodies” means The remaining wall bodies excluding the pair of lateral wall bodies are formed perpendicular to the lateral wall bodies so as to face each other.

  The box body 10 is provided with two pairs of protruding steps 11a, 11b / 11c, and 11d so that the slot plate 20 can be detachably coupled to the inside of the box body 10. The pair of projecting steps 11a and 11b are provided on one side lateral wall 13a, and the other pair of projecting steps 11c and 11d are provided on the other side lateral wall 13b. The pair of protruding steps 11c and 11d provided on the other lateral wall body 13b are symmetrically arranged at positions opposed to the pair of protruding steps 11a and 11b provided on the one lateral wall body 13a. Is formed.

  The pair of projecting steps 11a and 11b provided in the lateral wall body 13a is formed in a structure projecting along the height direction of the wall body at the left and right end portions of the inner wall surface of the lateral wall body 13a. Preferably, the pair of projecting steps 11a and 11b provided on the lateral wall 13a is preferably formed in a bar shape.

  The projecting steps 11a and 11b are formed so as to be separated from the inner wall surfaces of the vertical wall bodies 14a and 14b, and are formed as concave grooves between the vertical wall bodies 14a and 14b and the projecting steps 11a to 11d. Slot plate insertion grooves 12a, 12b, 12c, and 12d are provided. The slot plate insertion grooves 12 a, 12 b, 12 c, and 12 d correspond to slot plate insertion grooves for fitting and fixing the corners in the height direction Y of the slot plate 20 inside the box body 10. Accordingly, the pair of projecting steps 11a and 11c respectively provided at one end portions of the pair of lateral wall bodies 13a and 13b form a pair of slot plate insertion grooves 12a and 12c together with the left vertical wall body 14a. The pair of projecting steps 11b and 11d provided in the respective portions form another pair of slot plate insertion grooves 12b and 12d together with the vertical wall 14b on the right side.

  One of the main technical features of the display device glass substrate packaging box of the present invention is that the glass substrate housed in the box is supported and fixed through a slot plate 20 that is separated from the box body 10 and made of a different material. There is. Accordingly, the box body 10 of the present invention does not generate direct contact with the glass substrate, and merely serves to protect the glass substrate from the external environment and impact. However, unlike the conventional foamed plastic packaging box, the contamination of the substrate and the fine scratches on the surface due to the fixed projections 21 made of foam material do not occur.

  The box body 10 is manufactured through a foam molding operation using a foamable resin material. As a suitable foamable resin material, a foamed polyethylene (EPE: Expanded Polyethylene) resin or a foamed polypropylene (EPP: Expanded Polypropylene) resin can be used. Therefore, the box main body 10 of the present invention is basically light and easy to carry, and in particular, has an advantage in that it has an excellent buffering function for mitigating vibrations and external impacts that occur when carrying the packaging box.

  The slot plate 20 according to the present invention corresponds to a component for solving the weak points of a conventional foamed plastic packaging box made of only a foamable resin, that is, occurrence of dirt on the substrate and poor surface roughness. To do. The slot plate 20 is made of a material different from that of the box body 10, that is, made of a non-foaming resin material, is configured to be separated from the box body 10 and can be detachably coupled.

  The slot plate 20 according to the first embodiment of FIG. 2 is preferably formed of a rectangular plate member, and the corners in the height direction Y on both sides are used as the fitting portions 23a and 23b. A glass substrate fixing part is formed on one surface of the remaining area.

  The both side fitting portions 23a and 23b of the slot plate 20 are inserted into the pair of slot plate insertion grooves 12b and 12d provided in the box body 10 so that they can be in close contact with and fixed to the vertical wall 14b. Composed. Therefore, the protruding steps 11b and 11d must be configured to have a width that is separated from the inner wall surface of the vertical wall 14b by at least the thickness of the slot plate fitting portions 23a and 23b.

  The glass substrate fixing portion of the slot plate 20 has a large number of fixing protrusions 21 and a large number of substrate insertion grooves 22 formed alternately. The fixing protrusions 21 are provided so as to protrude on one side wall surface of the slot plate 20 along the height direction, and the fixing protrusions 21 are spaced apart from each other so as to form a fixed interval. The substrate insertion groove 22 is provided with one substrate insertion groove 22 by a separation space formed by a pair of adjacent fixing protrusions 21.

  As shown in FIG. 3A, the fixing protrusion 21 is formed to have a rectangular cross section, and is configured such that the inner portion and the outer portion of the substrate insertion groove 22 have the same width. Alternatively, as shown in FIG. 3B, the shape of the fixing protrusion 21 ′ is formed in a substantially trapezoidal cross-sectional shape, and the width becomes wider from the inner side to the outer side (opening side) of the substrate insertion groove 22 ′. You may comprise as follows.

  Further, in the packaging box of the present invention, when the slot plate 20 is fitted and assembled in the slot plate insertion grooves 12b and 12d, the fixing projection 21 and the substrate insertion groove 22 constituting the glass substrate fixing portion are paired with each other. The glass substrate fixing part can be completely exposed by being arranged in a width K1 between the steps 11b and 11d. Accordingly, the horizontal width X of the glass substrate fixing part formed on one surface of the slot plate 20 is smaller than or equal to the width K1 formed between the pair of protruding steps 11b and 11d. There must be.

  FIG. 4 is a combined perspective view of the display device glass substrate packaging box on which the slot plate 20 according to the first embodiment of the present invention is mounted.

  Referring to FIG. 4, a pair of slot plates 20 are assembled inside the box body 10 so as to face each other, and each slot plate 20 includes both side fitting portions 23 a and 23 b inside the box body 10. By being lifted and lowered on the pair of slot plate insertion grooves 12b and 12d, inserted and separated, the box body 10 can be easily and detachably coupled.

  When the assembly of the pair of slot plates 20 is completed inside the box body 10, the glass substrate fixing portions of the respective slot plates 20 face each other, and the glass substrates housed in the box body 10 have both vertical corners in the vertical direction. Are inserted into the substrate insertion grooves 22 of the pair of slot plates 20 facing each other and then supported by the fixing protrusions 21, so that the state of being stably housed inside the box body 10 is maintained. .

  In the display device glass substrate packaging box according to the present invention, the box body 10 is manufactured from a foamable resin system, and the slot plate 20 that is substantially in contact with the glass substrate and supported and fixed is separated from the box body 10. The main feature is that the slot plate 20 is made of a non-foaming material. Through this, the packaging box of the present invention makes the best use of the advantages of the foamable resin, while the disadvantages such as substrate contamination and fine scratches on the surface, which are problems with conventional foamed plastic packaging boxes. Can be minimized.

  That is, the slot plate 20 according to the first embodiment of the present invention is made of a non-foaming material, and the non-foaming material employs a non-foaming polymer (Polymer) resin, but the raw material is being produced. It is better that the material is free of additives such as silicon (Si) and a slip agent component. In particular, it is a raw material that has a stable molecular structure and less oligomer (that is, organic solvent and natural separation). The more preferable. Therefore, a resin system that is easily soluble in an organic solvent and easily separated, such as an oligomer of ethylene or styrene, is not preferable in configuring the slot plate 20 of the present invention.

  In consideration of the above-mentioned points, the present applicant has applied and tested various non-foamed resin systems, and it is preferable that the slot plate 20 is composed of a polyethylene terephthalate (PET) resin system, more preferably. A-PET (Amorphous-Polyethylene Terephthalate) was found to be the best. Further, when the slot plate 20 is formed of a PET resin system, there is an advantage that the generation of a product can be produced without minimizing the generation of friction and dust and without additional additives.

  A-PET is a non-crystallized PET having a non-crystallinity of 5% or less, which means a polymer resin made from 100% ethylene glycol (EG) and is not crystallized. Since it is in a state, it is flexible and tough, and has a characteristic that strength does not decrease even at low temperatures.

  FIG. 5 is a graph showing the analysis results of the surface components of the A-PET slot plate according to the present invention, and the following “Table 1” is numerical analysis data for FIG.

  The measurement graph of FIG. 5 is obtained by measuring the surface component of the slot plate 20 made of the A-PET material according to the preferred embodiment 1 of the present invention using an FT-IR TEST apparatus.

  For reference, FT-IR corresponds to equipment that irradiates wavelengths in the infrared region at a time, detects data at a time, and reads a peak to analyze surface components.

  The vertical axis of the measurement graph in FIG. 5 indicates the infrared wavelength range, and the horizontal axis indicates the number of absorption peaks. The peak means maximum power. Table 1 is experimental data obtained by numerically quantifying the measurement graph of FIG. 5, where “El” indicates the detected element, “AN” indicates the periodic table atomic number of the corresponding element, “unn” “C” indicates the weight ratio of the detected element, “atom.C” indicates the atomic weight ratio of the detected element, and “Error” indicates the probability of not being the detected element.

  As shown in the measurement graph of FIG. 5 and the experimental data of Table 1, only the weight ratio of carbon (C) and oxygen (O) is approximately 6: 4 on the surface of the slot plate 20 made of A-PET material. It can be seen that other silicon (Si), organic matter and foreign matters are not detected, and a very good surface state is maintained.

  Therefore, the slot plate 20 made of A-PET material prevents the occurrence of stains due to organic matter, contamination of the substrate due to transfer of foreign matter, and generation of fine scratches in the conventional foamed plastic packaging box. There is an excellent effect that it is possible to guarantee excellent quality.

  FIG. 6 is a measurement graph obtained by analyzing the surface components of the glass substrate in contact with the slot plate made of the PET material of the present invention. The horizontal axis indicates the measurement time, the vertical axis indicates the peak intensity, and a total of four sheets. The surface of each glass substrate, that is, “GLASS-1 to GLASS-4” was measured.

  As can be seen from the measurement results in FIG. 6, the surface of the glass substrate supported and packaged by the slot plate 20 made of PET material is not detected except for the other peaks except for the water peak. Maintain a good surface quality. For reference, the water peak shown in FIG. 6 is a small amount of moisture in the transfer gas, and corresponds to an element unrelated to the surface quality of the glass substrate.

  As described in detail above, the display device glass substrate packaging box of the present invention has a structure in which the slot plate 20 can be easily detached from the box body 10 so that the box can be easily cleaned for reuse. In addition, it is possible to prevent the contamination of the substrate that has occurred during the packaging process of the glass substrate by forming the slot plate 20 thus separated and made of PET or A-PET material. There are advantages.

  The slot plate 20 according to the preferred embodiment 1 of the present invention described above is made of a PET material or an A-PET material, but the same effect can be realized even if it is made of a PET-G material.

  PET-G (Polyethylene Terephthalate Glycol) is a product that delays the time of crystallinity to further reduce the crystallization characteristics as compared to A-PET and improves the whitening phenomenon during molding. PET-G is a polyester polymerized from terephthalic acid (TPA) and ethylene glycol (EG). By replacing a certain amount of ethylene glycol (EG) with cyclohexanedimethanol (CHDM), crystallization is delayed. Workability and physical properties can be improved.

  FIG. 7 is a graph showing the analysis results of the surface components of the PET-G slot plate according to the present invention. The following “Table 2” is numerical analysis data for FIG.

  The measurement graph of FIG. 7 is obtained by measuring the surface component of the slot plate 20 made of PET-G material according to Example 1 of the present invention using an FT-IR TEST apparatus.

  The horizontal axis of the measurement graph in FIG. 7 indicates the range of infrared wavelengths, and the vertical axis indicates the number of absorption peaks. Table 2 shows experimental data in which the measurement graph of FIG. 7 is numerically quantified. “El” indicates the detected element, “AN” indicates the periodic table atomic number of the corresponding element, “unn”. “C” indicates the weight ratio of the detected element, “atom.C” indicates the atomic weight ratio of the detected element, and “Error” indicates the probability of not being the detected element.

  As shown in the measurement graph of FIG. 7 and the experimental data of Table 2, the surface of the slot plate 20 made of PET-G material contains carbon (C) and oxygen (O), as well as silicon (Si) components. Although it was detected, it can be seen that no other organic matter or foreign matter was detected. That is, although the surface quality of the slot plate 20 made of PET-G is slightly inferior to that of the slot plate 20 made of A-PET material, there is no organic material or foreign matter other than the silicon component, and silicon is very fine. Since it is present in a large amount, an effect almost equivalent to that of the A-PET slot plate can be expected. Accordingly, the slot plate 20 made of PET-G material also prevents the occurrence of stains due to organic matter and contamination of the substrate due to the transfer of foreign matter and fine scratches generated in the conventional foamed plastic packaging box. There is an excellent effect that it is possible to guarantee excellent quality.

  FIG. 8 is an exploded perspective view showing the mechanism configuration of the display device glass substrate packaging box according to the second embodiment of the present invention, and FIG. 9 is for display device glass substrate packaging equipped with the slot plate 40 of FIG. It is a fragmentary sectional view of a box.

  Referring to FIG. 8, the display device glass substrate packaging box according to the second embodiment of the present invention includes a box body 30, a box lid (not shown) that covers an open upper portion of the box body 30, and A slot plate 40 configured to be detachably connectable to the inside of the box body 30 is included.

  The box body 30 according to the second embodiment of the present invention is a container that houses a glass substrate and protects the glass substrate from the external environment and external impact, and is open at the top and includes a glass substrate housing space inside. Thus, it is comprised by the case shape which consists of a wall body and a baseplate, Preferably it is manufactured in a rectangular parallelepiped shape.

  A locking step 31 is provided in the opened upper region of the box body 30 so that the slot plate 40 can be attached to and detached from the inside. The locking step 31 is formed so as to protrude from the upper end surface of at least one pair of vertical walls. The locking step 31 according to the preferred embodiment 2 in FIG. 8 is formed to protrude in the shape of a rectangular frame along the peripheral edge of the upper side surface of the box body 30. The box body 30 according to the second embodiment is manufactured through a foam molding operation using a foamable resin system. Suitable foamable resin systems may be foamed polyethylene (EPE) based resins or foamed polypropylene (EPP) based resins. Therefore, the box main body 30 of the present invention is basically light and can be easily transported. In particular, the box main body 30 has an excellent buffering function for mitigating vibrations and external impacts generated during transport of the packaging box.

  The slot plate 40 according to the second embodiment of the present invention is formed of a rectangular plate member, and includes a glass substrate fixing portion on the front surface and a slot plate locking portion 41 on the rear surface. In the glass substrate fixing portion, a large number of fixing protrusions 21 and a large number of substrate insertion grooves 22 are alternately formed. The fixing protrusions 21 are provided so as to protrude along the height direction on one side wall surface of the slot plate 40, and the fixing protrusions 21 are spaced apart from each other. Further, the substrate insertion groove 22 is provided with one substrate insertion groove 22 by a separation space formed by a pair of fixing protrusions 21 adjacent to each other.

  As in the first embodiment, the fixing protrusion 21 is formed to have a rectangular cross section so that the inner portion and the outer portion of the substrate insertion groove 22 have the same width, or a substantially trapezoidal cross section. It can also be configured so that the width increases as it goes from the inner side to the outer side (opening side) of the substrate insertion groove 22.

  The locking portion 41 is preferably configured to have a “┐” -shaped cross-sectional shape. The hook-shaped locking portion 41 is provided on the back surface of the slot plate 40. Specifically, the back surface indicates an upper end portion of the opposite surface of the one surface provided with the glass substrate fixing portion. Accordingly, the “┐” -shaped locking portion 41 may be formed in a form extending long along the corner of the upper end portion of the slot plate 40, or may be configured by separating into a number of locking portions. May be arranged in a line at regular intervals along the corner of the upper end.

  Referring to FIG. 9, when the slot plate 40 is vertically lowered into the box body 30 along the longitudinal wall body in a state in which the hook-shaped locking portion 41 faces outward, The slot plate 40 is mounted and fixed inside the box body 30 by inserting the locking portion 41 having the “┐” shape into the locking step 31 and performing a locking operation. The removal of the slot plate 40 can be achieved by lifting the slot plate 40 upward.

  Accordingly, the inner width of the locking portion 41 having the “┐” shape is configured to have a width that is at least larger than the thickness of the locking step 31. Alternatively, the inner width of the hook-shaped locking portion 41 is configured to have the same width as the thickness of the locking step 31. In this case, the locking step 31 can be firmly inserted and coupled into the locking portion 41 having a “┐” shape by a forced insertion method.

  When the assembly of the pair of slot plates 40 is completed inside the box body 30, the glass substrate fixing portions of the slot plates 40 face each other. The glass substrate housed in the box main body 30 is inserted into the pair of substrate insertion grooves 22 after both vertical corners thereof are inserted into the pair of substrate insertion grooves 22, and then held between the fixing protrusions 21. It will come to maintain a fixed state.

  The slot plate 40 according to the second embodiment of the present invention is formed of a non-foamable resin material as in the first embodiment, and is preferably at least one selected from PET, A-PET, and PET-G resin. It consists of one, and it is comprised so that attachment from the box main body 30 is detachable. As a result, it is possible to prevent the occurrence of stains caused by organic matter and transfer of foreign matter, and fine scratches, which have occurred in conventional foamed plastic packaging boxes, and to ensure the excellent quality of the glass substrate surface. Become.

  FIGS. 10A, 10B, 10C, and 10D are cross-sectional views of the fixing protrusion 21 provided with the embossing of the present invention. The glass substrate fixing portion of the slot plate 40 according to the first and second embodiments of the present invention includes a large number of fixing protrusions 21. The fixing protrusions 21 have embossing 21a, 21b, 21c, and 21d. Is preferably further provided.

  As shown in FIGS. 10A to 10D, a large number of embossings 21a to 21d are provided in an engraved form on one side wall surface or both side wall surfaces of the fixing protrusion 21, and a pair of fixing protrusions 21 adjacent to each other form a glass substrate. The contact area between the fixing protrusion 21 and the glass substrate can be minimized in the process of holding. Thereby, there exists an effect that the problem of the quality deterioration of the board | substrate which generate | occur | produces in the packaging process of a glass substrate can be reduced further. The embossing can be configured in such a manner that the hemispherical shapes face each other (21a in FIG. 10 (a)) or are arranged so as to be shifted (21c in FIG. 10 (c)). Further, the embossing can be variously configured in an elliptical shape (21d in FIG. 10 (d)), a polygonal shape (21b in FIG. 10 (b)), etc., but the minimization of the contact area with the glass substrate is considered. Then, it is most preferable to form in hemispherical shape (21a, 21c).

  FIG. 11 is an exploded perspective view showing a mechanism configuration of a display device glass substrate packaging box according to Embodiment 3 of the present invention.

  A box for packaging a display device glass substrate according to a third embodiment of the present invention includes a box body 1, a box lid (not shown) that covers the opened upper portion of the box body 1, and a detachable attachment to the inside of the box body 1. And a slot cap 50 configured to be connectable by a formula.

  The display device glass substrate packaging box according to the third embodiment of the present invention differs from the above-described first and second embodiments in that the conventional foamed plastic packaging box can be used as it is. The present invention is characterized in that it is configured to prevent problems such as causing defects.

  Referring to FIG. 11, a box main body 1 according to a third embodiment of the present invention has a fixing protrusion 3 for fixing a glass substrate, which is integrally formed of the same material as the box main body 1, that is, a foamable material. This is because the conventional foamed plastic packaging box is used as it is.

  The box main body 1 according to the third embodiment of the present invention is formed in a rectangular parallelepiped shape with an open upper portion, and the fixed protrusions 3 are formed on the inner wall surfaces of the pair of opposing wall bodies of the box main body 1 at regular intervals. And the substrate insertion grooves 5 are alternately formed.

  In addition to the wall and bottom plate constituting the box body 1 according to the third embodiment, the fixing protrusion 3 is also made of a foam material such as a foamed polyethylene (EPE) resin or a foamed polypropylene (EPP) resin. Yes.

  The slot cap 50 of the present invention is composed of a film sheet. The slot cap 50 is formed so that its cross section bends into an uneven shape, and is inserted and mounted so as to fit in the board insertion groove 5 provided inside the box body 1. Thereby, the slot cap 50 can cover the surface of the fixing protrusion 3 and the substrate insertion groove 5 in close contact with each other. The slot cap 50 is preferably configured with a thickness in the range of 1.2 mm to 1.8 mm, and more preferably with a thickness of 1.5 mm.

  The slot cap 50 according to the third embodiment in FIG. 11 is configured in a form in which a large number of fitting portions 51 formed so as to be bent in the same shape as the fixing protrusion 3 of the box body 1 are connected at a constant interval. The cross-sectional shape of the slot cap 50 in the horizontal direction X has a wave shape or an uneven shape. Further, the slot cap 50 has a length in the height direction Y that is the same as the length in the height direction Y of the fixed protrusion 3 so as to cover the entire surface of the fixed protrusion 3 and the board insertion groove 5 of the box wall body. It is comprised so that it may have. It is preferable that the fitting parts 51 are configured to be provided in the same number as the fixed protrusions 3.

  Accordingly, if the fixing protrusion 3 of the box body 1 is formed in a substantially trapezoidal cross-sectional shape, the fitting portion 51 of the slot cap 50 is also configured to be bent in a substantially trapezoidal cross-sectional shape.

  12 is a top side view of the display device glass substrate packaging box to which the slot cap 50 of FIG. 11 is coupled. As shown in FIG. 12, the insertion portion 51 of the slot cap 50 having a concavo-convex shape covers the surface of the fixed projection 3 in close contact with each other, and at the same time, is inserted into each substrate insertion groove 5, thereby 1 is mounted and fixed inside. Further, when an external force is applied to the slot cap 50 that is fitted and coupled between the fixed protrusions 3, it is released from the fitted state and removed from the box body 1. Detachable and can be connected.

  When the slot caps 50 are completely attached to the both side walls of the box body 1, the glass substrate housed in the box body 1 is fitted into the fitting grooves (the fitting parts 51 adjacent to each other) of the slot caps 50 facing each other. After the corners in the vertical direction are inserted into the space between the slots, the slot cap 50 is held between the fixed projections 3 so as to be stored and fixed inside the box body 1. To come.

  Further, the slot cap 50 according to the third embodiment of the present invention is formed of a non-foaming resin material as in the first embodiment, and preferably at least selected from PET, A-PET and PET-G resin. It consists of either one.

  As described above, in the display device glass substrate packaging box according to the third embodiment of the present invention, a thin film-like slot cap 50 made of a PET resin system is simply fitted and attached to a conventional foamed plastic packaging box. As long as this is done, there is an advantage that transfer of foreign matter and fine scratches generated by the fixed protrusions 3 and the substrate insertion grooves 5 of the conventional foamed plastic packaging box can be prevented. In addition, the display device glass substrate packaging box according to the third embodiment of the present invention can be easily separated and cleaned only when the box is cleaned, and can be removed completely without leaving any foreign matter. There is an excellent effect that the contamination of the substrate can be minimized when the box is reused later.

  Although preferred embodiments of the present invention have been described and illustrated above using specific terms, these terms are merely for clear explanation of the present invention and are not limited to the embodiments and description of the present invention. Obviously, various changes and modifications may be made to the terms without departing from the spirit and scope of the appended claims. Such modified embodiments should not be individually understood from the spirit and scope of the present invention and should fall within the scope of the claims of the present invention.

1, 10, 30 Box body 20, 40 Slot plates 11a, 11b, 11c, 11d Protruding steps 12a, 12b, 12c, 12d Slot plate insertion groove 21 Fixing protrusions 21a, 21b, 21c, 21d Embossing 22 Substrate insertion grooves 23a, 23b Slot plate insertion portion 31 Locking step 41 Slot plate locking portion 50 Slot cap 51 Slot cap insertion portion

Claims (5)

Through a box body consisting of a wall and a bottom plate so that a storage space for a glass substrate is provided inside, and a large number of fixing protrusions that are formed so as to extend along the height direction on one surface. In the glass substrate packaging box including a pair of slot plates to be fixed by supporting the corners on both sides of the glass substrate housed inside the box body,
The box body includes a locking step formed so as to protrude from the upper end surface of at least a pair of wall bodies facing each other.
The slot plate is provided with a locking portion having a cross-sectional shape of “┐” at the upper end portion of the opposite surface provided with the fixing protrusion, and the locking portion having the “┐” shape is inserted into the locking step, By being locked, it is detachably coupled to the box body,
The box body is formed of a foamable resin material,
The display device glass substrate packaging box, wherein the slot plate is formed of a non-foamable resin material. The fixing protrusion is
The substrate insertion groove formed by a pair of adjacent fixing protrusions is configured to have a substantially rectangular cross-sectional shape so as to have a certain width, or the width increases as the substrate insertion groove moves toward the opening. The display device glass substrate packaging box according to claim 1, wherein the box is configured to have a substantially trapezoidal cross-sectional shape. The non-foamable resin material is formed of at least one selected from PET (Polyethylene Terephthalate), A-PET (Amorphous-Polyethylene Terephthalate), and PET-G (Polyethylene Terephthalate Glycol) resin. The display device glass substrate packaging box according to claim 1. The display device glass substrate packaging box according to claim 1, wherein the foamable resin material is a foamed polyethylene (EPE) or a foamed polypropylene (EPP) resin. The display device glass substrate packaging box according to claim 1, wherein a plurality of embossings are formed in a positive shape on one side wall surface or both side wall surfaces of the fixing protrusion.

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