structural materials
1. What are the raw materials used in sanitary napkins?
The raw materials for the production of sanitary napkins mainly include: non-woven fabrics, fluff pulp, super absorbent resin (SAP), polyethylene (PE) film, hot melt adhesive, elastic materials (including elastic rubber bands, elastic non-woven fabrics), absorbent lining Paper, dry-laid paper, release paper (release film), etc. Radiator raw materials play different roles in products. Among them, fluff pulp and super absorbent resin (SAP) function to absorb and store liquids and are raw materials for sanitary napkins.
2. What is the structure of sanitary napkins?
The basic structure of sanitary napkins mainly includes surface layer, diversion layer, absorbent core, leak-proof foundation, etc. The auxiliary skeleton part includes three-dimensional protective edges, anti-adhesive release paper, etc.; menstrual pants (trouser-type sanitary napkins) The auxiliary frame part also includes elastic waist circumference, elastic leg circumference, etc.
The surface layer, diversion layer, absorbent core, and leak-proof bottom layer are respectively responsible for receiving, diffusing, absorbing and storing liquid (blood) and preventing leakage. The main functions of other auxiliary components are to prevent side leakage of liquid, fix sanitary napkins on underwear, or enable menstrual pants to be worn on the body.
Safety of sanitary napkins
3.What is the fluff pulp in sanitary napkins? Will it affect women’s health?
The raw materials of fluff pulp are mainly coniferous wood, such as pine, spruce, fir, etc., which are natural raw materials. Fluff pulp itself is hydrophilic and can quickly capture liquids. It has been widely used in absorbent hygiene products such as sanitary napkins for decades. Since sanitary napkins are in direct contact with human skin, the hygienic standards and cleanliness requirements of fluff pulp are relatively high. During the production process of fluff pulp, it is necessary to control microorganisms and prevent contamination by mosquitoes, foreign objects, etc.; the packaging requirements for fluff pulp rolls are also very high; in addition, during the transportation of fluff pulp, it is necessary to ensure that the packaging materials are clean and complete to avoid Contaminated fluff pulp due to damage to the packaging material.
5. Is formaldehyde harmful to the use of sanitary napkins?
Won’t. First of all, formaldehyde is widely present in nature, and small amounts of formaldehyde may be present in furniture, clothing, food, cars, etc. The requirements for formaldehyde content in the standards of GB/T8939-2018 “Sanitary Napkins (Panty Pads)” and GB/T39391-2020 “Female Sanitary Pants” are ≤75 mg/kg. Qualified products that meet the requirements of the standards will not be harmful to women. Harmful to physical health.
6. What is a fluorescent whitening agent? Do sanitary napkins contain fluorescent whitening agents?
Fluorescent whitening agents are organic compounds that absorb ultraviolet light and emit blue or blue-violet fluorescence. There is no need to add fluorescent whitening agents during the production process of sanitary napkins, and the various raw materials for producing sanitary napkins, such as fluff pulp and non-woven fabrics, do not need to be added.
If the sanitary napkin is placed under ultraviolet light, fluorescence may be seen. Fluorescence does not mean that a fluorescent whitening agent has been added. There are ubiquitous fluorescent substances in nature, and the most common ones, such as fireflies, shrimps, and crabs, all emit fluorescence. Many common foods such as soy sauce, Pu’er tea, white wine, black tea and other fermented foods are also fluorescent. Some raw materials in sanitary napkins, such as adhesives, themselves fluoresce. This does not mean that fluorescent whitening agents have been added, nor does it mean that they are harmful to the human body. Standards such as GB/T8939-2018 “Sanitary Napkins (Panty Pads)” and GB/T39391-2020 “Female Hygiene Pants” stipulate that products must not contain migratory fluorescent substances. As long as the products pass the test according to relevant national standards, they are Safe.
7. What are trace impurities? Are there trace impurities in sanitary napkins? Are they likely to affect women’s health?
Trace impurities generally refer to minor substances in products. It may be brought in by the raw materials themselves, formed during the production process, generated by reactions between components in the product or between components and packaging materials during normal storage, or precipitated from packaging materials, etc. Trace impurities are usually present in products at very low levels (trace amounts), such as a few milligrams or less per kilogram of consumer products.
Certain trace impurities that often appear in consumer products are widespread in nature and can be found in drinking water, soil, air and even food. Therefore, they may be mixed into the product during one or more steps during the collection and transportation of sanitary napkin raw materials, the production, manufacturing, packaging and storage of finished products.
Containing trace amounts of impurities does not mean that sanitary napkins are unsafe. When sanitary napkins contain trace amounts of impurities, multiple factors should be considered to determine whether the product poses a safety risk. These factors include: the nature of the trace substance (i.e., the nature and extent of the hazard of the substance), its content in the product, the amount and route of use of the product by consumers (for example, oral ingestion, inhalation, direct contact with the skin) or indirect contact with the skin, etc.), the frequency of contact or use of the product (such as using it several times a day or only once every few months), etc. These factors are closely related to the final safety evaluation results. When a product’s trace impurities are within safe limits, the product is safe. Standards such as GB/T8939-2018 “Sanitary Napkins (Panty Pads)” have clear requirements for the content of common trace impurities in sanitary napkins. When the products are used under normal and reasonable conditions, they will not cause harm to human health.
8. What are the standards to ensure the safety of sanitary napkin products?
Women’s menstrual care products such as sanitary napkins are disposable sanitary products. Manufacturers must obtain a sanitary license for disinfection product manufacturing enterprises (weixiao brand) issued by the national health department before they can implement production. The “Hygiene Standards for Disinfection Product Manufacturers” has strict requirements for manufacturers of women’s menstrual care sanitary products.
In addition, relevant standards for sanitary napkins include GB 15979-2002 “Hygienic Standards for Disposable Hygiene Products”, T/CTAPI003-2022 “Ingenuity Products – Hygiene Products”, etc., which have strict hygiene requirements for products.
9. Are there live insects in sanitary napkins?
Sanitary napkins are produced using automated, closed production lines, and strict pest control, cleaning and disinfection measures are in place for the factory buildings and production equipment. Many production equipment are equipped with high-resolution visual inspection systems that can monitor and remove products with dirt and foreign objects, even foreign objects as small as the size of a pinhead. The possibility of live insects being produced in the production process is extremely low. Many corporate products will undergo several tests such as product appearance, microbiology, and physical and chemical indicators before leaving the factory. Products must meet national standards before they can leave the factory. In addition, the raw materials of sanitary napkins, such as the non-woven fabric of the surface layer, the fluff pulp and high-absorbent resin in the absorbent core, are not nutrients for the survival of live insects. The production of sanitary napkin raw materials and the sanitary napkin itself requires high-speed roller operation, high-temperature spraying and high-pressure embossing. Even if insects enter, it is impossible to survive in this environment.
How to purchase, use and store sanitary napkins
10. What indicators should you pay attention to when choosing sanitary napkins?
When consumers choose sanitary napkins, they should pay attention to indicators such as the absorbency and comfort of sanitary napkins. Absorption performance is the most important indicator of women’s menstrual care hygiene products, including absorption amount, absorption speed, re-infiltration amount, etc. The comfort of using sanitary napkins mainly depends on the thickness, softness, fit, breathability, and surface dryness of the sanitary napkin.
11. Why are sanitary napkins prone to moisture and mold? How should they be stored?
The main function of sanitary napkins is to absorb menstrual blood. Most of the materials used are also highly absorbent and can easily absorb moisture in the air and become damp. If it is left in a humid and bacteria-producing environment for a long time after opening, it will easily become damp, moldy, and even bugs can crawl in. Therefore, it should be placed in a dry and clean environment. After opening, it is best to use it within 2 to 3 months to ensure safe use.
12. What should you pay attention to when changing sanitary napkins?
The replacement time of sanitary napkins depends on many factors, including the amount of menstrual blood during the menstrual period, whether it is used during the day or night, during meetings or outings, etc. When using sanitary napkins during the day, it is usually recommended to change them every 2 to 3 hours to keep the vagina clean during menstruation. If you have heavy menstrual flow and the sanitary napkin becomes full of menstrual blood soon after use, you need to change it in time to avoid soiling your clothes. In addition, menstrual blood is a good bacterial culture medium. If sanitary napkins are not changed for a long time, bacteria will easily breed, which is not conducive to vaginal hygiene during menstruation. If it is at night, you can choose to use nighttime sanitary napkins or menstrual pants to wear them all night long. However, if the amount of menstrual blood is heavy and it gets wet, you still need to change them in time.
