Plastic Bottle Business Opportunity Emerges to Accelerate Plastics Research

According to reports, in 2002, a total of about 250 billion beer bottles were consumed globally. The scientific and industrial industries in various countries were attracted by this huge market capacity and sales profits, and they have invested a great deal of force to study the replacement of traditional glass beer bottles with plastic bottles. A huge consumer market, and the three most promising barrier materials for the most promising applications are nylon nanocomposites AegisOX, PAMXD6/nanoclay composite M9 and polyvinyl alcohol (PVA) film materials made from plastic beer bottles.

Honeywell, USA is currently working on the development of a nylon nanocomposite Aegis OX with high barrier properties and low cost, which is an activation/passivation barrier material, in which the nanoclay is a passivation barrier, and Suitable oxygen sorbents act synergistically as activators. The material is said to reduce the oxygen transmission rate (OTR) of PA6 by a factor of 100, and the oxygen infiltration is almost zero. Some large PET bottle factories are using Aegis OX as the core of a three-layer beer bottle, and their life expectancy can reach 180 days.

The PAXD6/nano-clay barrier material M9, developed by Nanotec in cooperation with Japan's Mitsubishi Gas Chemical Company, is called Imperm and is used for the core layer of three-layer PET bottles. Imperm is said to have 100 times lower oxygen transmission than PET, 50% and 70% higher than standard PAMXD6 for carbon dioxide and oxygen, respectively. Transparency and peel resistance are the same as those of standard PAMXD6. Three-layer structure (PET/ M9/PET beer bottles can meet the shelf life requirements of the United States (110 days) and Europe (180 days). Mitsubishi Gas Chemicals has introduced "buy-and-use" M9 pellets to the market.

Polyvinyl alcohol (PVA) is a polyhydroxy polymer with properties such as water solubility, barrier properties, and biodegradability. However, this material is difficult to process due to its high melting point and close to the decomposition temperature, and the melt extrusion is prone to thermal decomposition. To prevent thermal decomposition, traditional methods for preparing PVA film include solcast coating method and wet extrusion blown film method. In 2004, the solcast coating method was just introduced in China, and only foreign countries have used wet extrusion blow molding. In 2003, the British Environmental Polymer Group announced that it had achieved dry extrusion blown film. The domestic Beijing Light Industry Plastic Research Institute, Sichuan United University, Beijing University of Chemical Technology and other units are also conducting PVA dry blown film research. Products come out.

PVA film products have the following characteristics: PVA film is an environmentally friendly packaging material, non-toxic, non-polluting, completely biodegradable; PVA film has a very high degree of transparency, transmittance of about 95% and has anti-ultraviolet; PVA film without Electrostatic, non-dusting, eliminates electrostatic intrusion in the packaging process, and reduces costs; PVA film has a very high barrier to gases, the barrier to oxygen is about 1000 times that of commonly used polyethylene film, polypropylene film 300 Times, barrier properties equivalent to EVOH (ethylene-vinyl alcohol copolymer), but much cheaper; PVA film has very good oil resistance, insoluble in organic matter; PVA film has excellent heat sealability and viscosity, excellent printing Sex.