JP2006168832A - Packaging device for large-sized thin glass pane stacked - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an economical packing device for large-sized thin glass panes stacked horizontally on each other for long-distance transport. <P>SOLUTION: The economical packaging device for large-sized thin glass panes stacked horizontally on each other for long-distance transport includes a first shock-absorbing packaging case for a stack of raw glass panes 1 that are cut to predetermined dimensions and stacked horizontally oriented with interleaving layers between adjacent panes, which satisfies the mechanical requirements for external freight traffic, and a second shock-absorbing packaging case for a stack of subsequently processed substrate glass panes that are stacked horizontally oriented with interleaving layers between adjacent panes, which satisfies the mechanical requirements for internal transport within a glass processing or working operation. To further reduce breakage risk the second shock-absorbing packaging case has outer dimensions selected so as to be receivable in a shock-absorbing manner in the first shock-absorbing packaging case. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packing apparatus for large thin glass panels stacked in a planar shape, particularly display glass panels or window glass panels.

  In the present invention, the term “large thin glass panel” means a glass having a thickness of about 1 mm, particularly a display glass panel having a thickness of 1 mm or less and dimensions of 1500 mm × 2500 mm and 1100 mm × 1300 mm. Say the panel. The packaging device according to the present invention is mainly suitable for thin glass panels with smaller dimensions, but provides an economic solution to the difficulties associated with their packaging.

  In the manufacture of relatively thick large flat glass panels having dimensions up to 1500 × 1000 × 8 mm, particularly improved flat glass panels used in the field of home building, raw glass panels of the size required by cutting the glass are A so-called substrate glass panel is produced which is then made and the edge portions are processed and polished. These flat glass panels are housed together in various types of containers. The green glass panels are typically removed manually from the conveyor device, optically inspected, and then stacked into containers for every 5-10 sheets for transport to subsequent processing steps.

  In order to protect the fragile surfaces of these flat glass panels from damage due to, for example, scratches or dust, various materials called interleaf (insertion) materials are sandwiched between the flat glass panels. The flat glass panel is then further wrapped manually, preferably using a material such as paper. These wrapped glass panels are then placed into available disposable or reusable containers. Such accommodation in the container is arbitrarily performed in the vertical direction or the horizontal direction by selection. These glass panel wraps are tightened in a strap manner to prepare for transportation. The movement of the flat glass panel during the wrapping is also partly prevented by using an additional filling material instead of tightening with straps. The wrap is opened manually or partially automated by the purchaser for further processing, and the stacked glass is then removed individually.

  It is currently possible to use various adhesive materials and non-adhesive materials as the interleaf layer.

  The non-adhesive material is applied directly onto the glass or support material and then also functions as a separating means. The disadvantages of such non-adhesive interleaf layer materials are that they cannot be removed easily and reliably by hand, that there is still a visible residue, or that this removal process must include, for example, a water washing process. There is a difficulty that requires further work. Examples of such non-adhesive materials include PMMA balls and powders, or natural materials such as cork. Furthermore, these non-adhesive materials are gradually moved by the spaces formed during manufacture, thereby adversely affecting subsequent processing steps.

  The adhesive material can be classified into a strip form and a planar form.

  Interleaf layer strips are often provided with an adhesive layer that adheres to the glass by static electricity or adhesion. However, there is a drawback that a chemical reaction occurs between the glass and the adhesive layer or the adhesive layer. Electrostatic adhesion to one side of the material can only be obtained using expensive adhesive materials. Adhesion on both sides of the material is undesirable because it will be difficult to later separate from the glass. Also known are rigid strips that are not fixed to the glass but are kept in position in the stack by providing flanges at the lateral edges as described in US Pat. No. 3,837,636, for example as described in US Pat. No. 3,837,636. It is. However, it is very difficult to automate this latter interleaf layer structure. The stack thickness is minimal and the minimum material strength must be selected for the necessary stiffness to prevent distortion during or after processing.

  Special paper that can be adapted or matched to the dimensions of the glass panel and that is loosely placed on the glass panel is used as a particularly flat adhesive material. However, the work required for finishing or dressing these materials is a drawback. Another disadvantage is that a large amount of residue is generated that needs to be removed when the package is opened. Furthermore, when the glass surface is coated to the maximum, there is a risk that the risk of harmful contents in the paper increases. In addition, the chemical reaction of uncertain components in the paper caused by humidity, for example, cannot be prevented.

  An additional function is obtained by coating the adherent plastic foil in a thin layer on the entire glass surface. This gives a product with no residue, but its removal cannot be automated. Such products are further imparted with desirable properties such as UV protection properties or very good scratch durability. When such a product is used, it is unnecessary to separate the plastic foil from the flat glass, resulting in an increase in cost.

  In addition, there are mixed materials as described in GB 1,366,264 which are sprayed, for example in liquid / plastic form, to form a strip and then cured or glued to one or both sides by local heating. Further, US 5,607,753 also discloses a mixture such as a powder strip which functions as a separating interleaf layer.

  However, using these known materials leaves traces or residues that are difficult to remove on the glass surface in any case.

  DE 101 04 0003 discloses a method for producing a large and relatively thick (about 10 mm) glass panel which can avoid the above drawbacks.

  Despite the above-mentioned known methods, the problems related to the shipping packaging of thin glass (glass thickness of about 1 mm), especially large display glass, have been sufficiently solved because the standard solution has not progressed. Absent. Even packaging for long-distance transportation has not been found with a packaging structure that meets all requirements. Interleaf materials used as a layer to be inserted between glass panels are known and can be used for large sizes. Such a material is a classic flat glass that is transported in a state in which the flat glass is placed vertically in a wooden frame or cradle adapted to a large size, or in a slanted state in a metal frame or cradle. Applicable to transportation methods. In this case, the raw glass panel that is smaller in size and polished, i.e. the substrate glass panel, uses spacers according to the above-mentioned state of the art to prevent the formation of destructive scratches on the glass surface. So that they are not in contact with each other.

  However, when the size of the thin glass panel is increased, the glass panel is excessively bent, and the space corresponding to the maximum deflection is required. Therefore, the use of the storage space becomes insufficient, so that the spacer cannot be inserted. It becomes. If greater deflection occurs due to braking operations or impacts during transport by current means, the thin glass panel is likely to break.

  Therefore, although it is necessary to adjust the size of the raw glass packaging to a larger size, that is, to adapt to the size that gradually increases the size of the current conventional packaging, as described above, It is generally impossible to use it for the substrate glass. Therefore, it is necessary to develop a new packing method.

  According to current general transportation standards in the flat glass industry, glass panels are transported either vertically or in a slightly inclined state. The basis of such a transportation method is that the glass panel can be kept extremely stable by the cut edge portion. When this method is applied to a very thin display glass, the rear wall of the packaging means is used to prevent the bottom of the thin glass panel from spreading and to ensure that the thin glass panel stands upright. It is necessary to use and tighten the glass panel firmly. Furthermore, it must be localized in an upright or gently inclined state using suitable additional connecting means. Moreover, measures must be taken to place the thin glass panels completely parallel to each other. As the number of panels increases, it becomes difficult to ensure the attachment of the panel to the rear wall that keeps the glass panel upright with the glass bottom as the foundation. As the number of panels increases, the risk of breakage increases because the panels must be tightened more strongly. The risk of breakage is greatly increased if the glass panel is not placed upright against the cut edge.

  Because of these problems, research to find new solutions especially for the packaging of large display glass has become active.

  In today's globalized era, raw glass panels are generally produced only in one country, and the subsequent processing of extremely demanding substrate glass panels is generally done in other low-wage countries, from which consumers That is, it is transported to a glass processing company such as a display manufacturer. Therefore, the packaging for the raw glass panel must meet the requirements for freight transport by truck or sea freight including typically ancillary loading means such as forklifts.

  The present invention provides a stacked large thin glass panel of the type described above to a glass manufacturing plant that manufactures subsequent substrate glass panels from a raw glass panel manufacturer in a large array of large thin glass panels. Stacked large thin glass that can be transported in a dust-free and scratch-free manner while avoiding the risk of breakage throughout the entire transport system from there to the glass processing plant An object is to provide a packaging device for a panel.

The packaging device used for large thin glass panels stacked horizontally according to the present invention,
Mechanical stability used for raw glass panels that have been cut to the specified dimensions and stacked horizontally using interleaf layers (insertion layers, intervening layers) and that meet the mechanical requirements of overseas cargo First shock absorbing packaging case with
Mechanical durability used for stacked substrate glass panels that are stacked horizontally and subsequently processed using an interleaf layer and meet the mechanical requirements of domestic transport associated with glass processing or manufacturing operations Consists of a second shock absorbing case with
For the overseas transportation of the stack of substrate glass panels, the second shock-absorbing packaging case is configured to have an outer size that is housed in the first shock-absorbing case in a shock-absorbing manner.

  The packaging device according to the present invention is a large stack of large thin glass panels, in an economical manner that does not cause dust and scratches, from a raw glass panel to a substrate glass panel processed from a raw glass panel, It is then possible to transport the entire transportation system up to the glass processing operation on the basis of the minimum risk of breakage. This packaging system is economical because the first stable transport packaging case for the raw glass panel can be reused for overseas shipping of the second packaging case for housing the substrate glass panel.

  The objects, features and advantages of the present invention will be described in further detail using the preferred embodiments described below with reference to the accompanying drawings.

  1 to 4 are composed of a raw glass panel or a first packaging case and a substrate glass panel or a second packaging case used for a large plate-like rectangular thin glass panel, particularly a display glass panel or plate. A packaging device according to the invention is illustrated.

  In order to enable stable and economical transportation of glass panels even in large quantities, for example, a large number of glass panels, such as 200 sheets, must be stacked and transported without using spacers on other glass panels. In principle, horizontal packaging is used. A “glass block” consisting of a number of glass panels stacked without spacers is extremely stable. Further, since the packed arrangement or the stack itself can be further stacked on each other by horizontal packing, it can be stored at high density.

  In the packaging device according to the invention, the glass panels are stacked and placed in contact with each other using their large surfaces, and the glass panels are simply separated by a thin interleaf (insert) layer. is there. As the interleaf layer, paper is preferably used in the case of a raw glass panel, and protective foil is preferably used in the case of a substrate glass panel.

  1A and 1B show an embodiment of a transport packaging case according to the invention for use on a raw thin glass panel 1 which is large and rectangular in shape and has a size of 1920 mm × 2245 mm.

  The transport packaging case is provided with a rectangular wooden or metal frame 2 that enables a large number of glass panels, for example, 200 or less glass panels to be combined in an appropriate size and transported horizontally. The frame 2 is manufactured in the form of an iron lattice or a lattice from wood pieces joined by a conventional method or metal pieces welded to each other (see FIG. 4). The frame is provided with a smooth and removable flat bottom 2a for stably supporting the glass panel and preventing breakage, and a side column 3 having leg plates 3a at each corner. The height of this side column is determined according to the maximum height of the stack of green glass panels. The leg plate 3a plays an auxiliary role in stacking the frames during storage and transportation. The guide opening 3b serves to assist insertion of the fork fingers of the forklift stacker. The first or transport packaging case is provided with a flexible rubber mat 4 that functions as a bottom support for absorbing vibration or impact during transport.

  The side cover or side closure of the packaging device is formed by a sturdy plastic side panel 5 which is preferably made as a hollow panel and mounted in a wooden or metal frame 5a with a vertical arm 5b. These rugged plastic side panels are preferably removable to simplify the loading operation, and for this purpose both sides of the side panel are provided with eyes 5c on which the side pillars 3 are mounted. The side panel is suspended from the side. Inside the frame, shock-absorbing pads 6 are provided laterally spaced from each other, and the edge of the glass panel is protected from contact with the frame or the side panel 5 by these pads. In order to protect the glass panel from breakage, the stacked glass corners 1a are held without contact with any components of the packaging device. In order to hold the partially stacked glass blocks fixed during transport, an inner attachment is provided, which is placed on the glass block and gripped in a conventional manner using the side walls 5 of the frame. Further, an outer cover 7 is provided to extend the protection to the accessory member (see FIG. 4).

  The loading of the first or transport packaging case containing the raw glass panels is typically performed according to FIGS. 1A and 1B.

  The raw glass panel cut from the continuous glass sheet is provided with an interleaf layer (insertion layer, intervening layer) made of paper on the entire surface, preferably taken out from the conveyor belt using a suction lifter, and coated side panel 5 are separately stacked in the frame 2 from which 5 is removed. This process is generally fully automated. When the stacking reaches a maximum, the side panel 5 is manually hung on the four side pillars 3. The stacked packaging device or arrangement is then moved using a forklift stacker to a storage location or a shipping location for overseas transport and is typically loaded into a container.

  2A and 2B show a second packaging case used in a stacked arrangement of substrate glass panels 8 in which the edge portion of the raw glass panel 1 shown in FIGS. 1A and 1B has been removed by about 3 cm during edge processing. One embodiment is shown. Accordingly, the size of the substrate glass panel 8 is small, that is, reduced to 1860 mm × 2185 mm. In addition to glass removal from the glass edge during substrate glass panel manufacture in the glass processing operation, the edge of the raw glass panel is polished and the glass surface is polished.

  The second packing means is preferably provided with a plastic box 9 made of a hollow panel and having a sturdy container shape or pan shape with sufficient durability for automated internal transport. The dimensions of this plastic box are, in the case of the embodiment shown in FIG. 2B, a plastic box with a rectangular cross section for shipping substrate glass panels as an option, as can be understood in more detail from FIGS. 3A and 3B. The size is such that it can be inserted into the stable rectangular frame 2 of the raw glass panel or the first packing means.

  Therefore, the maximum thickness of the outer wall of the plastic box is the thickness of the buffer material (bank) of the raw glass packing case on the edge (about 3 cm) of the glass panel that is removed in the subsequent glass processing stage in which the substrate glass panel is manufactured. It is the same as the added thickness. Furthermore, the weight of the box does not exceed the weight of each stacked material removed during processing of the edge portion, so that the stability of the edge frame 2 is not impaired. The plastic box 9 can be sufficiently cleaned and immersed for processing in a dust-free clean room.

  As in the case of the raw glass panel according to FIGS. 1A and 1B, a shock-absorbing member or a shock-absorbing side member (pad) made of a buffer (bank) material, preferably a material that has no influence on the clean room (particle-free) ) 10 is provided between the stacked edge portion of the substrate glass panel 8 and the inner wall of the plastic box 9. The corner portion of the stack is kept free of cushioning (bank) material to protect it from breakage, and the corner portion is held out of contact with other materials. In FIG. 2B, the base or bottom portion 9a of the box 9 is shown in the edge portion region that does not contain cushioning (bank) material.

  A protective foil functioning as an interleaf layer is between the substrate glass panels. That is, both surfaces of each substrate glass panel are covered with foil. The entire stack of substrate glass panels is sealed or covered with foil to ensure a dust-free packaging. This foil is deployed in the plastic box 9 before the glass panels are stacked.

  As shown in FIG. 2A, the plastic box 9 is closed with a cover (lid) 9b in order to ensure that the stack of glass panels is transported as dustless as possible.

  The substrate glass panel 8 is stacked in the plastic box 9 in the same manner as in the case of the unprocessed glass panel. The conveyance of the plastic box in the apparatus includes the placement of the plastic box in the raw glass packing apparatus, preferably by removing the side panel 5 and the bottom plate, and preferably by automation using a roller conveyor.

  3A and 3B are shown in FIG. 2A and 2B, together with the exploded perspective view of FIG. 4, and the raw glass panel packaging frame 2 according to FIGS. 1A and 1B, and the casing 2 accommodated in this packaging frame 2 and functioning as an exterior box. It is the figure which showed the packing apparatus used for the shipping of the lamination | stacking of the substrate glass panel 8 which consists of a combination with the substrate glass panel plastic box 9 which followed.

  The inner box is designed to be durable for transport during the work period from stowing the substrate glass panels to final packaging of the substrate glass panels into the exterior box. Transport durability in the case of truck transport, sea transport and air transport is ensured by using an outer box that is substantially more durable.

  This concept is advantageous in terms of cost because the unprocessed glass panel packing case that is used anyway during the glass processing operation can be used as external packaging of the substrate glass panel.

  According to the horizontal packaging, an increase in storage density of about 50% can be obtained by stacking horizontally, so that a reduction in storage cost is also achieved.

  Although the present invention has been embodied and described and described as a packaging apparatus for stacked large thin glass panels, various changes and modifications can be made to the present invention without departing from the spirit of the present invention. Thus, the present invention is not intended to be limited to the details shown above.

  Since the gist of the present invention does not require further analysis and is sufficiently disclosed by the above description, a third party can apply the latest knowledge to comprehensively or identify the present invention from the standpoint of the prior art. It is possible to easily adapt the present invention to various applications without leaking the features that clearly constitute the essential features of this aspect.

It is a schematic side view of the first packing case used for stacking large thin glass panels in the form of raw glass panels oriented in the horizontal direction. It is a schematic side view of the second packing case used for stacking large thin glass panels in the form of substrate glass panels oriented in the horizontal direction. FIG. 3 is a schematic side view of a packaging apparatus for overseas transportation of substrate glass panels according to the present invention comprising a combination of a first packaging case shown in FIG. 1 and a second packaging case shown in FIG. 2. FIG. 4 is an exploded perspective view of the packaging device shown in FIG. 3.

Claims (19)

First impact absorption that meets the mechanical requirements required for overseas transport, used for stacking raw glass panels that have been cut to size and stacked horizontally with an interleaf layer between adjacent panels A packing case,
Follow the mechanical requirements for domestic transport associated with glass processing or manufacturing operations, used for stacking substrate glass panels that are subsequently processed and stacked horizontally with an interleaf layer between adjacent panels A second shock-absorbing packing case with a structure that gives mechanical stability
The second shock absorbing packing case is configured so that the second shock absorbing packing case is accommodated in the first shock absorbing packing case by the shock absorbing method. A packaging device for large thin glass panels stacked horizontally, wherein the packaging case is used as an additional packaging for overseas transportation of substrate glass panels.   The first shock-absorbing packaging case is composed of a packaging frame, a planar substrate that can be attached to and detached from the packaging frame, and a lattice structure, and the packaging frame is made of metal or wood and is sufficiently durable for long-distance transportation. The packing apparatus according to claim 1, wherein the packing apparatus is a peculiarity.   The packaging apparatus according to claim 2, further comprising a flexible cushioning mat installed on the flat substrate.   4. The packing apparatus according to claim 3, wherein the flexible buffer mat is a rubber mat.   3. A packing apparatus according to claim 2, wherein said packing frame is provided with side closure means, and said side closure means is composed of a plurality of sturdy plastic side panels.   6. The packaging apparatus according to claim 5, wherein the plastic side panel is a hollow panel.   6. The packing apparatus according to claim 5, wherein the plastic side panel is detachable.   The packaging apparatus according to claim 7, wherein the plastic side panel is configured to be inserted onto the substrate.   The said plastic side panel is hold | maintained in a frame, The eye for suspending the said side panel from the side pillar provided in the said packaging frame is provided in the said frame. Packing equipment.   A shock absorbing pad extending in the longitudinal direction made of a buffer material is further included, and the pad is provided with the green glass panel provided in the packing frame so that a corner portion of the green glass panel does not come into contact with the buffer material. The packing device according to claim 2, wherein the packing device is arranged on a side portion of the internal space for the container.   The packing device according to claim 10, wherein the buffer material is foamed plastic.   The packaging apparatus according to claim 2, further comprising an outer cover for protecting the outside of the glass panel, wherein the outer cover is attached to an upper surface of the packaging frame.   2. The packaging apparatus according to claim 1, wherein the second packaging case used for the substrate glass panel is composed of a sturdy pan-shaped plastic box.   The first shock-absorbing packaging case is composed of a packaging frame that is sufficiently durable for long-distance transportation, a planar substrate that can be attached to and detached from the packaging frame, and a lattice-shaped structure, and the sturdy bread-shaped plastic box includes the The packing apparatus according to claim 13, wherein the packing apparatus is configured to have an outer size accommodated in the packing frame.   A longitudinally extending shock absorbing pad of cushioning material is further included, and the pad is provided in the pan-shaped plastic box such that a corner portion of the raw glass panel does not contact the cushioning material. The packing device according to claim 14, wherein the packing device is arranged on a side portion in an internal space for the substrate glass panel.   16. The packing apparatus according to claim 15, wherein the buffer material is made of a plastic material that satisfies a clean room condition.   The packaging apparatus according to claim 13, wherein the stack of substrate glass panels is covered with a foil member so as not to allow dust to pass therethrough.   14. The packing apparatus according to claim 13, further comprising a lid for closing the stable bread-shaped plastic box in a dust-free manner. 14. The packaging according to claim 13, wherein a plastic foil having a stack of substrate glass panels is housed in a dust-free state and ready for shipment in the packaging frame for long-distance transportation. apparatus.

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