In the process of paper sales, paper quality accidents often occur. If the paper is not cut and printed, it is not difficult to handle it. The worst result is that the paper is returned to the sales company, and the shipping costs are borne by half or by one party. The returned paper dealers can negotiate with the mill, request a claim, or simply sell it at a discount. Nowadays, most of the users value the price more. There are some small problems but the price is much lower. There are many people willing to buy, and other foreign products are certainly not sold out. However, once it has been printed, the trouble is greater. Now the profits of paper are meager. One ton of paper is the profit of several hundred dollars. Printing houses frequently print at 4-5 tons of paper, and they face problems and face losses of tens of thousands of yuan. No one will easily assume this responsibility. Many disputes arise. It also resulted. Therefore, when both parties purchase paper, they must have considerable judgement ability. Judging from the appearance, the two sides should have a good feed. Especially for those business units that do not have their own printers and buy paper packages and send them to other printing plants for printing, because they cannot control the printing situation at any time, they must conduct a careful visual inspection of the purchased paper.
Different papers have very different performances and uses, and their appearance requirements are also different. In addition, different paper machines have different manufacturing conditions and ratios of raw materials. Therefore, the inspection of the appearance of paper is based on the fact that the actual paper is inspected against the standards negotiated between the two sides, and the paper that does not meet the requirements is checked. It is called paper with appearance paper disease.
Appearance Paper Type: Appearance paper disease is mainly named after the paper's appearance surface and the difference in the shape of the paper, and it is also named after the common papermaking defects. The more common paper diseases are: air knife streaks, calendered streaks, applicator roll marks, cardboard warpage, burrs, pits, spots, embossing, creases, and scraper streaks.
Appearance paper disease inspection method: Appearance paper disease inspection, in addition to the very need to use the instrument, are generally based on senses to identify, inspection methods are mainly the following:
Light-seeing method: look at the paperboard against the light source and observe the surface of the paper with the naked eye;
Look at the inspection method: Put the paper on a flat surface or an inclined surface. The light is radiated from above. The eye is about 30cm away from the surface of the paper. The eyes are checking against the paper surface.
Observe the inspection method: On the basis of the flat-view inspection method, raise one side of the paper with both hands, and look from different angles to check;
Hand-touch inspection method: For paper diseases that are not easily detected by the naked eye, such as fine sand on the surface of the paper, the surface of the paperboard must be touched by hand to check it. At the same time, the paperboard can be judged for the severity of the paper disease.
Listening: Check the side of the paper with your hand and shake it back and forth to hear the sound. This is mainly to check the "body bone" of the paper and determine the severity of the paper disease.
It is also possible to tear the paper, observe the core of the paper, or cut out the A4 size sheet from the paper to be printed, overlap this with the A4-size paper with the same weight, and then squeeze the end. To see if the two sheets of paper are separated, if there is a clear separation, it may be that the quality of the arriving paper and paper samples may be quite different.
In general, the judgment of the appearance of paper diseases is mainly to take into account the printing or use factors, if there is a slight paper disease, but the impact on the printing or use is not, the two sides only need to understand the situation, the paper can still be used.
However, if the disease is obvious and the impact on printing and use is greater, such paper is still good for return. Therefore, in the author's many years of business experience, whether it is a user or a distributor, it is necessary to first check the appearance of the paper first when purchasing paper, which can avoid losses and reduce many unnecessary business disputes.
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