Roller forming biaxially oriented water-soluble polyethylene film production technology

Self-raised by Lanzhou Sanhuan New Technology Development Co., Ltd. and independently researched and developed, the "Water-soluble PVA film biaxially-stretched roller film production technology" has passed the provincial-level technical appraisal in Lanzhou recently.

The reason why the "water-soluble PVA film" has attracted the attention of the market because it has the advantages and characteristics of water-soluble, biodegradable, good barrier property, oil-proof and anti-static, has been widely used in food, medicine, tobacco and other packaging, It is the ideal environmental protection packaging material. At present, PVA film in the domestic market mainly relies on imports, and the price is high. The film forming process is mainly based on the roving method and extrusion method. Due to high energy consumption, large floor space, high investment in equipment, and unacceptable quality control, it has restricted the wide application of PVA film in China to some extent.

New technology developed by Lanzhou Sanhuan New Technology Development Co., Ltd. “Compact technology for producing polyvinyl alcohol film by roller method” has short process flow, less equipment investment, small footprint, low energy consumption and noise compared with existing process methods. The advantages of a small, clean production environment. Because the film formation and curing (drying) are completed synchronously on the drum, the film formation is uniform, and the technical difficulties such as rapid film formation, rapid stripping, continuous high efficiency, etc. in the wet process production are well solved. The product has good flatness and the specifications are mediated. The range is large, and it can meet the requirements for the manufacture of a wide range of packaging film in the market. As the production process strengthens the after-ripening and biaxial stretching measures, the production performance index is further improved. The PVA film produced by this technique is quite full in its characteristics. Because of its low additive content, high strength, and good transparency, it is widely used. The research and development of this technology is based on the existing patented inventions. It is improved and optimized. Its equipment and processes are different from the existing similar thin film manufacturing methods and are currently at the leading level in China.

Source of information: pack.cn