• Non-woven
  • Application
Home>News

Preparation Process of Degradable Wet Wipes

2024-12-27

The preparation process of degradable wet wipes mainly includes textile process, wet wipes process and packaging process. The specific process flow can be adjusted according to different materials and wet wipes product requirements. Generally speaking, the preparation process includes fiber preparation, spinning, weaving, coating, cutting, packaging and other links.

During the preparation process, attention should be paid to controlling the moisture content and moisture content of wet wipes, adding an appropriate amount of wet moisturizer, etc., to improve the stability and use experience of the product.
When selecting materials, choose biodegradable materials and process the materials into a fiber state, which can be done through textile technology, spinning technology, etc.; you can use wet-laid or dry-laid technology to prepare the materials into fibers yarn.
Wet laying includes three stages: dispersing fiber raw materials, fiber web shaping and drying. During production, the fibers are first dissolved in water according to a certain proportion, then beaten into a slurry with a beater, and then the slurry is evenly distributed. Apply it on the mesh curtain and dry it to form a fiber mesh. Fibers suitable for wet-laid webs are required to have good dispersion in water. If the fibers are not well dispersed in water and form kinks in the water and are not easy to become single fibers, it will greatly reduce the efficiency of wet-laid webs. quality. The dispersibility of fibers in water is affected by factors such as their aspect ratio, curl, and hygroscopicity. To improve the dispersion rate of fibers in water, surfactants can be added to water for hydrophilic treatment.
Dry-laid webs include carded webs and air-laid webs. The carded web-laid method has higher fiber length requirements, while the production of wet wipes requires a certain content of short fibers to maintain its flushability. The product is not highly dispersible and will be gradually eliminated from the market.
The airlaid method does not have high requirements on the length of long fibers and can be used to process short fibers with a length less than 80 mm, especially wood pulp fibers with a length less than 10 mm, and has the advantage of relatively low production costs. The fibers produced by the above method also need to go through the reinforcement process to keep the wet wipes in good wet strength. The reinforcement mainly includes chemical bonding, thermal bonding, and spunlace. The chemical bonding method is to coat a layer of reinforcing agent on the surface. The reinforcing agent can be a water-soluble polymer, adhesive or resin, etc., which forms a thin film by coating and drying, thereby increasing the strength and stability of the wet wipes. The thermal bonding method is to add a hot pressing adhesive to the fiber, and then use a certain temperature and pressure for hot pressing to melt the hot pressing adhesive between the fibers, thereby enhancing its strength and stability.
The spunlace method uses high-pressure water flow to perform spunlace. Different materials and fibers are alternately layered together to strengthen the fiber web. These reinforcement processes can be adjusted and combined according to different wet wipe materials and product requirements. Through appropriate reinforcement processes, the strength and durability of wet wipes can be improved, their service life can be extended, and the fragmentation of wet wipes can be reduced to a certain extent, and the degradation rate can be slowed down.
In the process of preparing biodegradable wipes, the following aspects need to be paid attention to.
1. Humidity and moisture content of wet wipes: Control the humidity and moisture content of wet wipes to maintain the stability of wet wipes and slow down the degradation rate of wet wipes.
2. Selection and use of additives: According to the function and needs of wet wipes, appropriate additives should be selected, such as moisturizers, antibacterial agents, etc. The selection of additives should meet environmental protection requirements .
3. Product safety: The safety of the product should be ensured during the preparation process, such as disinfection treatment, quality inspection, etc. Through reasonable process design and material selection, biodegradable wet wipes can be naturally decomposed into harmless substances within a certain period of time, reducing the negative impact on the environment.