The "First Financial Daily" reporter collected a variety of knowledge about household paper for readers' reference.
About household paper
Question 1: What is the difference in quality between facial tissue and toilet paper?
Answer: The main difference in quality between facial tissue and toilet paper is that facial tissue generally has wet toughness (a measure of toughness of the paper in a fully wet state). Toilet paper is generally not allowed to have wet toughness to prevent the paper from being easily broken down and clogging the sanitary septic tank after use.
Question 2: How to distinguish the quality of toilet paper and facial tissue?
Answer: It can be distinguished from their use. Toilet paper is generally used in the bathroom, and the paper is required to have a certain degree of resistance to breakage, and is easily decomposed in contact with water, and does not cause clogging of the septic tank. The facial tissue is generally used for the cleaning of the hands, the face, etc., and is required to be soft and unbreakable, capable of absorbing water quickly and not decomposing into shredded paper.
Question 3: Can the facial tissue be placed in the bathroom instead of toilet paper?
Answer: Absolutely not. Because the facial tissue has a high wet toughness, it is not easily decomposed by water, which may cause blockage of the sanitary septic tank pipeline.
Question 4: Why do some papers leave a small piece of confetti on the face after rubbing the face?
Answer: The paper is made of fibers intertwined. After absorbing a certain amount of water and wiping it, the chain between the fibers is destroyed, and a small piece of paper scraps is formed. The better quality facial tissue has a certain degree of wet toughness, and this phenomenon will not occur when it is used normally.
Question 5: Does the household paper have a shelf life?
Answer: Not necessarily. Shelf life refers to the safe use period of the product. If it is used beyond this date, its quality cannot be completely guaranteed, and even cause damage, such as food, medicine, film, etc. The shelf life of tissue paper is a highly responsible commitment of the manufacturer to the consumer. Only by ensuring the safety and hygiene of the production process, the manufacturer dares to make a promise of shelf life.
About fluorescent whitening agent
Question 1: Why do some fluorescent materials are added to household paper?
Answer: Since household paper made from materials such as inferior recycled paper cannot meet the national whiteness specification, the production plant increases the whiteness by adding a fluorescent whitening agent.
Question 2: What effect does the fluorescent agent have on the human body?
Answer: European and American medical circles have pointed out that long-term contact with human skin and certain fluorescent agents may cause cancer.
Question 3: Is the paper whiter the better?
Answer: Under the premise of not adding fluorescent whitening agent, the whiter the paper, the better. Some papers use fluorescent whitening agents with carcinogenic ingredients to increase the whiteness of the paper, which may cause damage to the human body.
Question 4: How to judge whether the fluorescent agent is added to the household paper?
Answer: Paper added with fluorescent whitening agent will produce blue fluorescence under the illumination of ultraviolet light (such as a money detector). It can also be found to be pale when judged by the naked eye.
About native wood pulp
Question 1: What is 100% native wood pulp?
Answer: Slurry can be divided into wood pulp, straw pulp, sugar cane pulp, cotton pulp, recycled waste pulp, etc. due to its different sources. Wood pulp refers to pulp made from wood chips and cooked fiber; raw pulp refers to pure virgin fiber. , different from recycling waste paper pulp.
Question 2: What is the difference between virgin wood pulp and virgin pulp, paper edge paper and recycled paper?
Answer: Primary pulp refers to pure virgin fiber. It can be divided into wood pulp, straw pulp, sugar cane pulp, cotton pulp, etc., including raw wood pulp. Paper edge paper refers to cutting in the production process of cultural paper. The resulting scrap, recycled paper is used old waste paper.
Question 3: Is it more environmentally friendly to use recycled paper?
Answer: Not necessarily. If the corresponding processing procedures (such as deinking, bleaching, washing, wastewater treatment, etc.) fail to meet the standard, it will not only cause environmental pollution, but also the residual chemicals of the products will threaten the safety and hygiene of the use.
Question 4: Is there any other addition to the pulp in the household paper?
Answer: In the production process, household paper sometimes adds a small amount of chemicals to improve the physical properties of the paper, but in addition to the fluorescent agent, as long as it is verified by the Food and Drug Association (such as the US FDA), It will not cause harm to the human body.
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