PVA dissolution tips: Why our company's powdery pva dissolves at room temperature.
The dissolution of the PVA powder under the same conditions of polymerization and temperature is affected by the degree of alcoholysis. The series of complete alcoholysis cannot be dissolved at room temperature, and it is necessary to heat the water to more than 80 degrees to dissolve. Part of the alcoholysis series can be slowly dissolved in water at room temperature after being processed into a powder, and completely dissolved under high-speed stirring for 30 minutes. What is the slowness of partial alcoholysis of polyethylene powder? One is the degree of polymerization, the degree of polymerization is high, the molecular weight is large, and it is relatively insoluble. The degree of polymerization has a relatively low molecular weight and is relatively soluble. The second is the degree of alcoholysis. The higher the degree of alcoholysis, the more difficult it is to dissolve. This is the reason why the complete alcoholysis of polyvinyl alcohol cannot be dissolved in cold water. Due to the constraints of production conditions in China, the PVA alcohol degree produced by some plants fluctuates greatly, and some even exceed 90%. Coupled with the presence of some acetate impurities, some polyvinyl alcohol powders cannot be completely dissolved. There are always small particles that swell in white. Consumers who use this polyvinyl alcohol powder to make dry powder putty are prone to polishing unevenness, and there are always small rubber particles. Doing glue has the problem of slow dissolution and impurities, which affects the use of the product and causes half the consequences.
we offer patented full biodegradable film and PVA bag, all products are made by casting equipment, It is different from traditional blow molding products, all blow molding products are non full biodegradable. We can produce pva films and bags in all transparent and various colors.
we also offer organic material full biodegradable film and bags with patented raw material and production Process.
For more PVA film and bags products please visit us:
http://www.joyful-printing.net/pva-bag/
http://www.joyful-printing.com/pva-bag/ eng only
The factory is located in the chuangxin industrial Park of Leiyang City, Hunan Province. 2 hours high-speed railway journey from Shenzhen. With cheap manpower and development costs, so we could offer good products with cheap price to our guests.
There are several advanced PVA water-soluble film production lines, various packaging bags and shopping bag production lines in our factory. We have developed PVA films of various temperatures. Among them, PVA high-temperature film technology is the world's leading film technology, and there is a strong R&D team and management team in our factory. We are a new materials technology company specializing in the research, production and sale of water-soluble films (PVA-polyvinyl alcohol film).
PVA water-soluble film has excellent barrier properties, water solubility and environmental friendliness. It is one of the most successful green materials in recent years. It has been widely recognized by environmental authorities and users at home and abroad, and is increasingly used in packaging, textile embroidery and water transfer printing.
For example: pesticides, fertilizers, dyes, detergents, water treatment agents, mineral additives, detergents, chemical reagents for garden care, etc., can also be used as rapeseed, plant seed bags, clothing bags, food and hospital washing bags, industrial The packaging of various products such as supplies and electronic products can also be used for textile embroidery padding materials, water transfer printing, and film stripping. At the same time, the company successfully developed packaging bags and supermarket shopping bags for various application scenarios this year. Customized bags and shopping bags of various specifications.
The factorey specializes in product quality, technology improvement and product innovation, and is committed to providing customers with products and services that are satisfactory.