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production manufacturers have yet to be discovered. 3. the coextrusion Co-extrusion barrier bottle packed together in one word comes from English, often abbreviated Co-ex. The main features of this technology are both physical and chemical properties of different kinds of plastic (usually polyethylene and nylon or polyvinyl alcohol), bonded together by means of special adhesives. This plastic bottle at least three layers. Among them, the barrier effect of the nylon,

Generally located in the innermost such as polyvinyl alcohol. These materials include special adhesives are bought from the market, the performance is proportional to the price, so material is not the bottleneck in this technology. Problem on the device. And not like conventional blow molding equipment, multi-layer co-extruded bottles blow molding equipment, must be based on the different layers and configure the appropriate number of screw Extrusion head. Minimum configurations must be paid on the three screws and the corresponding three-layer Extrusion head. Not only that, each layer Extrusion head must also have an adjustable range, and can guarantee the product has a good consistency. These requirements together, can provide the required equipment manufacturers are numbered and their equipment prices are accordingly high. This is why the world's only Germany have co-extrusion equipment and co-extruded bottles manufacturers of reason is why its price higher than why barrier bottle of fluoride: 10%. The situation now, there has been a dramatic development. Since 2002, China's Zhejiang Gush over five or six total squeeze bottle manufacturer. It is understood that this one, useful for Taiwan production equipment, useful Korea equipment Germany crowded early, also claimed that United States imports of equipment and do not allow any outsider to visit. Today was amazing, these co-extruded bottles prices are lower than the fluorinated bottle, but of variable quality. As some manufacturers of squeeze bottles altogether, water drop test at room temperature, 10 4 crack in the bottle. What is more, co-extruded bottles manufacturers have accused opponents talk about quality, using inferior materials of others. Co-extruded barrier bottle selection when the inner layer is made of nylon, has strict requirements when using a PVA is, otherwise not only the barrier effect, also can result in adverse consequences of pesticide failure. This, almost none of the production of co-extruded bottles manufacturers can speak clearly. Block prediction of the development trend of fluorinated bottle plastic bottles as a mature technology, and its future focus of nitrogen gas on the domestic production of raw materials. Localization the sooner the full cost also more space. But no matter what, wanted to replace with fluorinated bottles pet bottles (PET), the possibility is very small.
Blending bottles are relatively more likely to reduce costs. Learned that a research institution in South China is developing a new technique for inorganic barrier material mixed with plastic, the sample was sent to trial in a pesticide factory. If successful, the cost can be reduced to that of pet bottles. In addition, Chinese-Korean joint venture is trying to replace a pet bottles as the target of some new material. Co-extruded bottles are in melee. If the parties cannot rely on each other daily specials come out grab the market despite quality circles, not only to survive.