Author：Baby & Adult Diaper Materials FROM：Diaper Materials Manufacturer TIME：2023-03-06
With the opening of the two-child policy, people are increasingly caring for their children, and the attention to baby products will definitely take up more energy from mothers. Due to the rapid development of China's overall economy, baby diapers have become some young treasures. Essential baby products for moms. However, the production process of baby diapers has become a very mysterious thing for some mothers who have not been exposed to the production of diapers. How can a product materials.What mysterious thing is used to combine them? With these questions, let's get to know the raw materials that belong to baby diaper
There are two kinds of absorbent cores for diapers currently on the market. One is a conventional absorbent core made of wood pulp and polymer materials mixed in a certain proportion. It uses wood pulp fibers to comb and guide urine into the absorbent core. Inside the body, the urine is locked by the strong water-locking performance of the polymer material, also known as water-absorbing powder (beads), so that the surface of the diaper can stay dry after absorbing a certain amount of urine. Due to the presence of wooden paddles in this core, there is always no way to solve some of the faults. However, due to the excellent combing performance of wood pulp fiber for urine, it is widely used in some big brand diapers, including Dawang, Kao, Pampers, and Mummybaby, which are all used by international first-line brands. The second is an ultra-thin absorbent core made of dust-free paper, Pengsong non-woven fabric and polymer materials mixed in a certain proportion. This new type of core guides the urine through the dust-free paper to guide the urine to the polymer material for absorption. In addition, there is a layer of Pengsong non-woven fabric to fix the polymer, so no matter how much water the polymer material absorbs , are fixed in the center of the whole chip, so it is not easy to get lumps compared to the first conventional core, and it is also constantly layered. In this case, it does not affect the absorption of a large amount of urine, so it is used by many domestic brands, including some excellent brands, including Anerle, Daddy Baby and other domestic big brand diapers. In the above introduction, we can see that no matter which absorbent core it is, there will be an indispensable material, polymer water absorbent resin (SAP). This is why a thin diaper can absorb a lot of urine. 's hero.
First of all, citing the explanation of Baidu Encyclopedia, hot melt adhesive (English name: Hot Glue) is a plastic adhesive. Its physical state changes with the temperature change within a certain temperature range, but its chemical properties remain unchanged. It is non-toxic and tasteless. , is an environmentally friendly chemical product. Then some mothers must be curious, where does hot melt adhesive exist in our diapers? Why can't we see the existence of hot melt adhesive when we get a diaper? In fact, the process of producing diapers is a relatively complicated process. It is composed of surface non-woven fabrics, leak-proof edge non-woven fabrics, core body, core-coated non-woven fabrics, bottom film, bottom film non-woven fabrics, front stickers, left and right stickers, waist non-woven fabrics, elastic bands, etc. The raw materials are laminated layer by layer in a fully automatic production line through a quantitative application of this hot melt adhesive. In the process of using hot melt glue, we need to use glue machine equipment. There are two ways of gluing, one is spraying glue, and the other is scraping glue. These two methods use spray gun and scraping. After several small holes of the spiral punch out the gas at a set air pressure, the glue squeezed out of the glue hole in the middle of the air hole is sprayed in a spiral shape on the surface of the material to be compounded, and then passes through a series of three-star pressure. Roller to firmly compound the material together. And some brands of diapers often complain to customers that there are some yellow glue-like substances on the back or surface of the product, which is called glue in the industry, a defective product. The formation of glue is because of these The air holes of each spiral are blocked. After the glue is pressed out of the pipeline, it is not affected by the spiral gas, and it condenses into a block of glue droplets and falls on the product within a certain period of time. This probability is actually very small, and it can be calculated by the probability of a few millionths or even a few millionths of a million. However, because the glue is white when it is just dripped onto the product, it cannot form an effective color difference with the surface of the product. Therefore, some large factories now use The advanced visual inspection system for stains cannot be removed 100%, but as the temperature drops, the ordinary hot melt adhesive turns yellow or light yellow after cooling and solidifying. Therefore, with the current technical level in the industry, there is no way to completely avoid the formation of glue. Of course, experts in the industry are already working on a higher-definition camera system to eliminate and discharge glue, and we hope this technology can be realized sooner.
Non-woven fabrics are composed of directional or random fibers and are a new generation of environmentally friendly materials. A few years ago, most diapers in the industry, whether international or domestic brands, used more spunbond non-woven fabrics. However, due to the higher and higher requirements of mothers on diapers, from the improvement of functionality, to the subsequent higher quality requirements such as softness and skin-friendly, some hot air non-woven fabrics have been introduced in the industry as base film non-woven fabrics. high-end cloth products. Even some good brands even use a 3D hot air non-woven lamination process for the surface hydrophilic non-woven fabric, which not only makes the surface of the product feel three-dimensional, but also affects the absorption speed of the entire diaper and the reverse osmosis of the product. Both have a good performance.
For a diaper, there are many kinds of raw materials, but they account for the largest proportion. The most important ones are the three kinds described above, absorbent core, hot melt adhesive, and non-woven fabric. Therefore, the introduction of baby diapers is not complicated or mysterious. But one thing is certain, all baby diaper raw materials are safe and environmentally friendly, and can be used by your little ones with peace of mind.
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