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How to distinguish the quality of toilet paper and the selection of quality testing instrument

Date: 2021-12-24 09:32
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Abstract:

How to distinguish the quality of toilet paper and the selection of quality testing instrument

According to the introduction of the National Quality Inspection Institute, the routine quality inspection of toilet paper, tissue and napkin will generally test the following nine performance indicators: appearance of toilet paper, quantitative weight of toilet paper, whiteness of toilet paper, horizontal suction height, transverse tensile index strength, longitudinal and horizontal average softness, hole, dust degree, microorganism and other indicators.

1. Dustiness of toilet paper: Popular point is that the dust particles on the paper is not much. If the raw material of toilet paper is log pulp, the dust level will not be a problem. However, if the recycled waste paper is used as raw material, and the process is not appropriate, the dust level is difficult to meet the standard. More dust will affect the appearance and hygiene index of toilet paper. Dust measurement instrument: zca-1 dust meter.

2 toilet paper hole: Hole index is the limit requirement for the number of holes on wrinkled toilet paper, which will affect the use of paper. The wrinkled toilet paper with too many holes is not only poor in appearance, but also easy to be damaged in use, which affects the wiping effect.

3. Toilet paper appearance: **To see the outer body of toilet paper soft packaging, the selection of toilet paper should first check the outer soft packaging. The heat sealing seal of the product packaging should be flat and firm, without damage and leakage, and the sealing is in good condition; The package shall be printed with the manufacturer's name, date of manufacture, product conformity grade, national standard number, and the health standard number (gb20810-2006)** Look at the appearance of the paper, the paper surface should be clean, there should be no obvious dead fold, incomplete, damaged, hard block, raw grass tendon, pulp ball and other paper diseases and impurities, the paper should not have serious hair loss, powder drop phenomenon, the paper should not have residual printing ink.

4. Tissue weight: Quantitative sum can be divided into two types: * * refers to whether the quantity or number of sheets is enough. According to the relevant regulations, the negative deviation of products with net content of 50g to 100g shall not exceed 4.5g; For commodities between 200g and 300g, no more than 9g** It refers to the quantitative gram weight determination of toilet paper, which is expressed in g / m2 with the standard weight of 100cm2. Quantitative instrument: dl-100 quantitative sampler + JT electronic balance.

5. Water absorption of toilet paper: You can put the water drop on it to see how fast it absorbs. The faster the speed, the better the water absorption. The toilet paper can also be cut into long strips and placed vertically, and the bottom of the strip is put into water. In the standard time, the change of water absorption height can be used to determine the water absorption performance of toilet paper. Water absorption height measuring instrument: xsl-1 water absorption measuring instrument.

6. Transverse tensile index of toilet paper: It is the toughness of the paper and whether it is easy to break when used. Pure wood pulp paper, because of its long fiber, has large tensile force, good toughness and is not easy to break. Tensile strength measuring instrument: wdk-01 tensile strength tester.

7. Whiteness of toilet paper: Toilet paper is not the whiter the better, it may be that excessive fluorescent bleaching agent is added. Fluorescent agents are the main cause of dermatitis in women, and long-term use may cause cancer. How can I tell if there is an excess of fluorescent bleach? First of all, with the naked eye, it should be natural ivory white, or the toilet paper is exposed to ultraviolet light (such as a banknote detector). If there is blue fluorescence, it is proved that there is a fluorescent agent. However, if the brightness is too low, it will not affect the use of toilet paper, but it indicates that the raw materials used are poor, so we should not use this kind of products as far as possible. Whiteness measuring instrument: bd-48 whiteness tester, ZF-7 three-way ultraviolet analyzer.

8. Softness of toilet paper: This is an important indicator of toilet paper products, good toilet paper should give people a soft and comfortable feeling. The main factors affecting the softness of toilet paper are fiber material and wrinkling process. Generally speaking, cotton pulp is better than wood pulp, wood pulp is better than wheat straw pulp, and the softness of toilet paper is rough when used. Softness tester: zrd-1000 softness tester.

In a word, good quality toilet paper, paper towel and napkin are generally natural milky white or ivory color, with uniform and delicate texture, clean paper surface, no holes, no obvious dead folds, dust, raw grass tendons, uniform thickness, large tensile resistance, good hand feel, etc. But the low-grade toilet paper, paper towel, napkin look dark gray and impurity. If you touch it with your hand, you will even lose powder, color or even hair, poor water absorption, low tensile strength, poor handle softness and other quality problems.