Glass substrate packaging system, protecting-sheet loading device, protecting-sheet feeding device, and glass substrate packaging method

Abstract

Provided is a glass substrate packaging system (1) for laminating and packaging a glass substrate (4) and a protecting sheet (7) alternately on a pallet (5) by a glass substrate loading device (6) and a protecting-sheet loading device (8). When the glass substrate (4) and the protecting sheet (7) are alternately laminated, the protecting-sheet loading apparatus (8) places the protecting sheet (7), with only the peripheral edge portion being held, on the glass substrate (4) placed beforehand by the glass substrate loading device (6), and releases the held state of the protecting sheet (7) at the stage where the succeeding glass substrate (4) is placed by the glass substrate loading device (6) on the protecting sheet (7) held only at its peripheral edge portion.

Description

technical field [0001] This invention relates to the improvement of the packaging technique of the glass substrate which laminated|stacked and packaged the glass substrate and a protective sheet alternately on a pallet. Background technique [0002] As is well known, various glass substrates such as glass substrates for flat panel displays (hereinafter referred to as FPDs) such as liquid crystal displays, plasma displays, electroluminescent displays, and field emission displays are difficult to obtain during storage or transportation. It is common practice to stack and pack the disks in a vertical posture (approximately vertical posture) or a horizontal posture (approximately horizontal posture) with a protective sheet such as laminated paper interposed between each glass substrate (for example, refer to Patent Literature 1). [0003] Conventionally, in such glass substrate packing operations, the glass substrates and protective sheets were alternately stacked on the pallet...

AI Technical Summary

Problems solved by technology

However, Patent Documents 2 and 3 do not disclose any method of stacking and packaging glass substrates and protective sheets alternately in a vertical orientation on pallets.

In addition, even when the methods disclosed in Patent Documents 2 and 3 are used in the above-mentioned packing method, the positional deviation or displacement of the protective sheet placed on the glass substrate previously loaded on the pallet is likely to occur due to its own weight. Wrinkles, therefore, the breakage of the above-mentioned glass substrates or the increase in the dimension in the stacking direction cause more significant problems

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