JP4736405B2 - Glass substrate packaging method and glass substrate packaging using the same - Google Patents

Description

  The present invention is a packaging of a glass substrate that can be safely and compactly packed in a glass substrate on which a film surface such as a color filter for a large liquid crystal display is formed and transported, and that the film surface side is prevented from being scratched. The present invention relates to a method and a package of a glass substrate using the method.

  Conventionally, when packing and transporting a glass substrate (hereinafter referred to as a glass substrate) such as a color filter for liquid crystal display, a foamed case made of polypropylene, a resin case, or the like is used depending on the application. In the foam case or the resin case, a gap is formed between the glass substrate, for example, by using a spacer, a side wall groove of the case, and the like to prevent the glass substrate from contacting and to pack the glass substrate. As shown in FIG. 4, it is a top view of the state accommodated in the case 11, the glass substrate 1 is inserted by the side wall groove | channel 12, a case is covered, and case packaging is complete | finished. This method is mainly used for packing and transporting glass substrates up to over 1m in length, which is said to be the fifth generation, and is excellent in transportability, but the distance between the glass substrates in the case is about 20mm. There is a limit to the number of items that can be stored inside and the number of items that can be transported by truck, etc., and returning empty cases has been an inefficient method.

  In consideration of the above phenomenon, a method has been proposed in which a glass substrate is stacked and packed using a reusable spacer (see, for example, Patent Document 1).

  Furthermore, a method of packaging by providing a gap between glass substrates using a resin spacer has been proposed (see, for example, Patent Document 2).

  In Patent Document 1, glass substrates are arranged upright and arranged, and spacers for preventing contact between the glass substrates are arranged and packed between the glass substrates. However, since the spacer and the glass substrate surface are in direct contact with each other, the film surface is not suitable for packaging a glass substrate on which the film surface is formed due to damage to the film surface or organic contamination. In addition, there is a problem in the cleaning method for maintaining the cleanliness when the spacer is reused.

  Next, although the means described in Tomi Literature 2 is advantageous for large substrates, it has been difficult to make the packaging compact because the gap between the glass substrates, which has been a problem in the past, has not been improved.

Prior documents are shown below.
JP 2004-224365 A Registered Utility Model No. 3054701

  An object of the present invention is to provide a glass substrate packaging method that can be compactly packed in a glass substrate on which a film surface such as a color filter for a large liquid crystal display is formed, and that prevents scratches on the film surface side. An object of the present invention is to provide a glass substrate package that can be safely transported.

The invention according to claim 1 of the present invention is a case where a glass substrate such as a color filter for liquid crystal display is erected and packed in a horizontal direction, and a glass substrate film surface side on which a color filter or the like is formed, between the next glass substrate backside, insert the protective sheet as a buffer material, the packing method of glass substrates to be used, the protective sheet is 0.3mm~0.1mm thickness, the surface of the one Is sticky and the other surface is non-sticky,
The part having adhesiveness on one surface of the protective sheet is a part of the surface,
Paste the surface on the side having the adhesive of the protective sheet to the glass substrate backside, the glass substrate film side surface of the next side is overlapped so as to contact directly with a non-adhesive of the protective sheet,
In this order, the glass substrate is packed and stacked up to a predetermined number.

  According to the present invention, since the very weak adhesive side surface of the protective sheet is attached to the back side of the glass where the film surface such as a color filter is not formed, it is easy to automate the application and removal of the protective sheet. In this case, there is no risk of damaging the film surface side, and the glass substrate after the protective sheet is removed can be easily cleaned. Furthermore, since the thickness of the protective sheet is extremely thin, the packaging volume is extremely small when the glass substrate is placed vertically and brought into contact with each other in a horizontal manner.

  The invention according to claim 2 of the present invention is the glass substrate packing method according to claim 1, wherein the material of the protective sheet is a cycloolefin resin or a polypropylene resin.

The invention according to claim 3 of the present invention is a packing body in which a glass substrate such as a color filter for liquid crystal display is packed, and the method for packing a glass substrate according to any one of claims 1 to 2 is used. It is the packing body of the glass substrate characterized by having packed.

  When packing a glass substrate stacked horizontally in a state where a glass substrate for a large liquid crystal display with a film surface such as a color filter is erected, a protective sheet with a very low adhesive strength is attached to the back side of the glass substrate. In the glass substrate packaging method in which the non-adhesive side of the protective sheet is stacked on the other glass substrate film surface side, the number of packages is approximately 15 to 25 times the same packaging volume as the conventional packaging method. An increase is possible.

  Further, it has been confirmed in the test that 600 or more glass substrates can be packed by this method.

  Furthermore, in the packaging method of the present invention, it has been confirmed that no influence on the film surface side occurs with respect to vibrations up to a frequency of 80 Hz in a vibration test after stacking 600 glass substrates.

  As an application example of the present invention, it can be widely used for a glass substrate without a film surface other than a glass substrate for a liquid crystal display with a film surface, and other thin glass substrates. The protective sheet can be reused by recycling.

  The packaging method of the present invention will be described in detail with reference to the drawings along the embodiments. FIG. 1 is a side sectional view showing an embodiment of the glass substrate packing method of the present invention. The method of affixing and packaging the protective sheet of the present invention on the back side of the glass substrate can be used for packaging of the glass substrate.

In addition, this method is advantageous for packing and transporting a large glass substrate having a glass substrate size exceeding 1 m, and is a glass substrate for liquid crystal display having a film surface, which is larger in size than the glass substrate. It is suitable for filters and the like.

  As shown in FIG. 1, the glass substrate 1 affixes the protective sheet 2 on the glass substrate back surface side 6 in which the film surface is not formed. The side to which the protective sheet of the present invention is attached is the protective sheet adhesive side 3, which is very weak in adhesive force and easily peeled off, and at the same time, prevents the adhesive substance from remaining on the glass substrate back side 6 after peeling. Next, the glass substrate 1 with the protective sheet is stored in an upright state, and the glass substrate film surface side 5 and the protective sheet non-adhesive side 4 of the protective sheet attached to the back side of the next glass substrate are in direct contact with each other. Are stacked and stored. At this time, the non-adhesive side 4 of the protective sheet that is in direct contact protects the membrane surface side, and in order not to cause damage to the membrane surface due to vibration during transportation, the non-adhesive side of the protective film with the glass substrate membrane surface 5 Contact is made so that no gap is generated between the side 4 and the side 4.

  Further, the same state is repeated until the specified number is stored. The above is the glass substrate packaging method of the present invention. In addition, it is preferable to optimize the glass substrate 1 with a protective sheet suitably as it may be laid down and stored in a laminated state.

  FIG. 2 is a side sectional view showing a packaging method for the combination of the glass substrate and the protective sheet of the present invention. The glass substrate back surface 6 overlaps the protective sheet adhesive side 3, and this state is the basis of the glass substrate packaging method of the present invention.

  In addition, after the specified number of sheets are stored, the glass substrates are fixed in the front, rear, left, right, top, and bottom directions, and are sufficiently fixed so that the glass substrates are not rubbed due to vibration during transportation. At this time, it is assumed that the strength of the lower surface of the package has a strength that can sufficiently exceed the total weight of the glass substrates.

  Next, the entire package surface is hermetically packaged with an exterior packaging material to complete the package for transportation. The package for transportation prevents contamination from the outside during storage and transportation. As the exterior packaging material, it is preferable to select and use a clean material that does not generate dust and gas.

  The material of the protective sheet is a cycloolefin resin or polypropylene. Further, the sheet stretching method may be devised to give the protective sheet a property of contracting in the vicinity of 1 to 5% at a predetermined heating, for example, 50 to 60 ° C. For example, after the protective sheet 2 is attached to the glass back side 6, the protective sheet is heated and contracted.

The part which has adhesiveness in one surface of the protection sheet of this invention is a part of the said surface. Moreover, the adhesive part is formed by using an adhesive material having a very weak adhesive force. Accordingly, the adhesive surface of the protective sheet can reduce the adhesive material, and can be more relieved because it is easy to peel off and no adhesive substance remains.

  3 (a) to 3 (d) are side cross-sectional views of a process for explaining an embodiment of a method for bonding and packing a protective sheet of a glass substrate of the present invention. As an Example, it is the protective sheet 2 which formed the adhesive surface in the long film-like both ends. The roll-shaped protective sheet 2 is supplied from the floor side of the apparatus to the upper surface of the transport roller 22 in the line (see FIG. 3a). It is carried into the line, aligned with the back side of the glass substrate, and pasted. Next, it cuts into the sheet form 21 for every predetermined number of glass substrates, arranges, and overlaps (refer FIG. 3b). Next, a glass substrate is cut | disconnected for every row and a process is complete | finished (refer FIG. 3c). In addition, FIG. 3d is the packing body 23, and may be standing upright or horizontal.

It is a sectional side view which shows one Example of the protection sheet and packaging method of the glass substrate of this invention. It is a sectional side view which shows the packing method of the combination of the glass substrate and protective sheet of this invention. (A)-(d) is a sectional side view of the process explaining one Example of the protection sheet and packaging method of the glass substrate of this invention. It is a top view which shows an example of the packaging method of the conventional glass substrate.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Glass substrate 2 ... Protection sheet 3 ... Protection sheet adhesion side 4 ... Protection sheet non-adhesion side 5 ... Glass substrate film side 6 ... Glass substrate back side 11 ... Case 12 ... Side wall groove | channel 21 ... Every predetermined number of glass substrates Sheet form 22 ... conveying roller 23 ... pack

Claims (3)

In the case of packaging in a horizontal direction with a glass substrate such as a color filter for liquid crystal display standing upright, between the glass substrate film surface side where the color filter etc. are formed and the next glass substrate back side, insert the protective sheet as a buffer material, the packing method of glass substrates to be used, the protective sheet has a thickness of 0.3Mm～0.1Mm, its one surface tacky, the other surface Has non-stickiness,
The part having adhesiveness on one surface of the protective sheet is a part of the surface,
Paste the surface on the side having the adhesive of the protective sheet to the glass substrate backside, the glass substrate film side surface of the next side is overlapped so as to contact directly with a non-adhesive of the protective sheet,
A glass substrate packing method comprising stacking and stacking glass substrates up to a predetermined number in this order.   The method for packing a glass substrate according to claim 1, wherein a material of the protective sheet is a cycloolefin resin or a polypropylene system. A packaging body in which a glass substrate such as a color filter for liquid crystal display is packaged, wherein the packaging is performed by using the glass substrate packaging method according to any one of claims 1 to 2. body.

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