Issue 23, 2013 - Production of ultra-low density polyethylene special materials

Ultra-low density polyethylene special material was put into production

A few days ago, the ultra-low density polyethylene special material TJVL-1210 independently developed by Tianjin Petrochemical Company was put into production
.
Tianjin Petrochemical became the first domestic enterprise
to produce polyethylene special materials with a density of less than 0.
912 kg/cubic centimeter.
The price of the product is at least 2,000 yuan
per ton higher than that of ordinary linear low-density polyethylene.
After being put on the market in batches, it can not only enrich the structure of polyethylene products, but also bring considerable benefits
to enterprises.

Ultra-low density polyethylene, also known as the fourth generation of polyethylene, has long relied on imports for all products, and the source channels are small and the quantity is limited, which cannot meet the needs of
the market.
The developers of Tianjin Petrochemical Olefin Department keenly grasped this market opportunity, and after careful planning, timely invested in R&D to carry out the research and development of ultra-low density polyethylene special materials
.
After understanding and mastering the use of imported materials of downstream manufacturers and their specific requirements for raw materials, they combined the characteristics of polyethylene equipment to clarify the product positioning
of special materials.

The development of ultra-low density polyethylene special materials is much more difficult than ordinary linear polyethylene products, and there is no production experience in
China.
In order to occupy this market as soon as possible, the department adopts a special catalyst system, carefully designs the polymerization process, product structure and performance, determines the ultra-low density control method, and forms an independent production process
.
In actual production, they took technical measures to solve the problems of high product viscosity and easy agglomeration in the polymerization process, and finally put into production successfully, and produced ultra-low density polyethylene
on the gas phase normal type device.

Linear ultra-low density polyethylene special material TJVL-1210 has excellent impact resistance and puncture resistance, good transparency and self-adhesiveness, which can be widely used in polypropylene product modification, low-temperature frozen packaging and food and sanitary packaging with special requirements for softness, and can be used to produce metal and non-metal surface protection
films.
(Chi Yuan)