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 Wysłany: Nie 4:14, 08 Maj 2011 Temat postu: christian louboutin sko New multi-functional flexi |
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New multi-functional flexible packaging material - SIOx evaporated film
O where X values between l-2. In principle that can be used to vacuum evaporation coating techniques can be used to form the silicon vapor deposition, but the different ways the composition of the evaporation source materials have different requirements,[link widoczny dla zalogowanych], the resulting film composition is also different. In addition to using the usual resistance heating or high frequency induction heating in a vacuum chamber for evaporation SiO films, but also can be used electron beam (EB) and low-temperature plasma (Plasma) deposition of SiO film. Materials, New Jersey, using low temperature plasma PC in the 40-50cc and 0.75mm Hg vacuum was prepared under the conditions of the SiO barrier flexible packaging film. At the same time,[link widoczny dla zalogowanych], a research institution in California also used a commercial plasma-enhanced chemical vapor deposition (PECVD) equipment used in food packaging SiO film. In Et the, reported the use of argon ion sputtering of the PET material in a SiO film on the plating. Composition of the target source used for the SiO2, 74%; CaO, 10%; NaO, 16%, almost ordinary soda-lime glass composition. In addition to SiOx films deposited on plastic film other than a special performance of the plating of other inorganic materials research work has started their research of these new materials is worth our close attention. ■, composite structure and properties of flexible packaging materials containing SiO evaporated film of flexible packaging materials are usually composed of the three: SiO films caught in the middle layer of plastic film to protect the SiO film is not damaged. Evaporated SiO films can be used as the substrate are PET, LDPE, OPP, ON and so on. And with it another layer of plastic film composite can be polypropylene,[link widoczny dla zalogowanych], polystyrene, polyamide. Facilitate recovery from the point of view, the second floor with a plastic resin film can be used, such as the outer layer OPP, the inner layer with CPP. And with the PVDC barrier layer of composite material as compared to the composite coating of silicon vapor permeability less affected by temperature. For example, when the temperature rose from the 20cc to 50cc when, PET/Si0x/CPP oxygen permeability was only increased by a 0.2l 0.5cm / m · 24h; in the same condition,[link widoczny dla zalogowanych], PET / PVDC / CPP oxygen permeability rate increased from 1.2 to 014.2cm / m · 24h. Evaporation of silicon composite flexible packaging materials are not only excellent barrier properties and transparency, heat resistance, can be suitable for microwave heating. These features are not available in aluminum composite material. Transparent flexible packaging will no doubt play a great role in promoting sales. SiO plating material weakness is not heat sealing, made of composite structure when there is no protection,[link widoczny dla zalogowanych], SiO layer more brittle. Because it is thin, where appropriate, joint formation, it has good resistance to fracture and resistance to folding. Third, the application prospect of flexible packaging materials, silicon deposition is extensively used. For example, it can be used for packaging dry foods and foods with high water or liquid food. Can also be used for toothpaste, condiments, disposable packaging and various industrial products, chemical products, composite packaging materials used. Silicon flexible plating can eventually accepted by the market, mainly the price = the low temperature plasma is being developed in the deposition, the SiO layer is to reduce manufacturing costs for the goal. Sources indicate that, while plating the price of silicon is very high, but the Japanese have a high acceptance. Japanese consumers are willing to pay higher price for high quality packaging products. In Europe, for environmental considerations, but also the emerging market for silicon plating. Although prices are still a negative factor, but growing demand will make prices ÷ application in the U.S., although some people engaged in the research of this new technology, but the slow growth in demand for new technology. On the one hand, the U.S. packaging industry have been widely used as a barrier layer of PVDC packaging materials, the solid coating of SiO there is fear; on the other hand, the United States there is no available supply of silicon plating film, most of the material depends on imports from Japan and thus the more expensive kind of flexible packaging. SiO plating material to make economically viable, must be the premise of ensuring the performance, to minimize the thickness of the deposition, because the larger the SiO deposition, the higher the cost.
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