A method for detecting and judging the quality of a solar cell or component packaging box

Abstract

The invention discloses a method for detecting and judging the quality of a solar cell or component packaging box. The paper packaging box to be tested is cut into test samples and soaked in hot water greater than 80°C for a period of time. After layering with the core paper, dry it, then spread the cobalt chloride test paper on the back of the kraft cardboard and the core paper, and drip water on the front of the kraft cardboard and the core paper respectively. After passing the judgment for a period of time, the kraft card Whether there is water stain or discoloration on the cobalt chloride test paper on the back of the paper and core paper to determine whether the paper quality and waterproof effect of the test sample meet the requirements. The method is simple and reliable, and provides an effective method for detecting the waterproof quality of paper packaging boxes.

Description

technical field [0001] The invention relates to the technical field of photovoltaic manufacturing and detection, in particular to a method for detecting and judging the quality of a solar cell or component packaging box. Background technique [0002] Usually, in the photovoltaic industry, the packaging of cells and modules is usually protected by paper packaging boxes, which protect products, facilitate storage and promote sales during the circulation process of products such as transportation, storage and sales. Product packaging is not only conducive to ensuring product safety and product quality, but also can well protect the legitimate rights and interests of product warehousers, transporters, sellers and consumers. Therefore, the packaging requirements of photovoltaic cells and modules are also crucial. As the outermost protective material of photovoltaic cells and modules, if the paper packaging box is stored in rainy and humid conditions, the performance of the prote...

AI Technical Summary

Problems solved by technology

However, in the paper industry, raw wood pulp paper contains a lot of fiber, and its waterproof and material are top-quality products, and its price is also high. In order to save costs, the manufacturer will reuse the recycled fiber or even multiple times in the process of processing. However, the number of fiber recycling is not unlimited. The strength of recycled fibers will gradually decrease, the length of fibers will also become smaller, and the paper will easily regain moisture, showing serious defects such as deformation and loss of mechanical strength.

At present, we usually evaluate the quality of paper packaging boxes by puncture strength and side pressure strength. However, in actual applications, the waterproof performance of photovoltaic battery and module packaging boxes is not included in the inspection items of the factory, and there are hidden dangers in product quality.

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