BOPA Film Resin Breakthrough: High-Viscosity Nylon Grade Passes Expert Appraisal, Filling a Domestic Gap
A specialty high-viscosity nylon resin compound for packaging film, developed by the Research Institute of Hunan Yueyang Petrochemical General Plant, has recently passed expert appraisal convened by China Petrochemical Corporation (Sinopec).
This high-viscosity nylon resin serves as the dedicated resin for producing biaxially oriented nylon (BOPA) film.
BOPA film delivers strong burst resistance and also stands out in impact resistance, puncture resistance, flexibility, temperature resistance and gas barrier performance — strengths that keep expanding its use as a packaging material. Annual output of such film overseas has already exceeded 10,000 tonnes, while China's own output has reached scale and continues to grow at a relatively fast pace. The matching specialty resin has advanced quickly abroad, with Japan, Italy and other countries already offering dedicated grades, yet it remained a blank in China, where users had to spend large amounts of foreign exchange on high-priced imports every year. Against this backdrop, the Research Institute of Hunan Yueyang Petrochemical General Plant, commissioned by Sinopec Science and Technology Development Company, launched development work on a specialty resin for biaxially oriented nylon film. After nearly four years of effort, the team adopted a two-stage continuous polymerization process and successfully developed synthesis technology for high-viscosity nylon resin for biaxially oriented film on a tubular continuous polymerization unit, producing high-viscosity nylon resin for packaging film with excellent performance.
Experts unanimously concluded that the successful development of this high-viscosity nylon resin specialty compound for packaging film fills a domestic gap, that its process technology has reached the world's advanced level, and that its product performance indicators match the advanced level of comparable foreign products, fully meeting the requirements of domestic users.
This article is reprinted from China Packaging Network (news.pack.cn). Original link: http://news.pack.cn/show-377036.html. All rights belong to the original author; this article is for industry exchange and learning only.
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