Composite coated PET / nylon MXD6 multi layer bottle
DATE：2021/4/23 8:28:39 / READ： / SOURCE：This station
Composite coated PET / nylon MXD6 multi layer bottle
Composite coating production line www.handern.com
Mitsubishi Gas Chemical Co., Ltd. uses multiple molds for injection molding and continuous production of ml bottles by biaxial stretch blow molding. In 1986, the annual output of ml bottles was 10 million. Part of the company's equipment is used to produce bottles with multi-layer structure of PET / nylon MXD6 / PET / nylon MXD6 / PET for filling wine. Some large-scale carbonated beverage manufacturers use 1.5L ml bottles to package carbonated drinks and alcoholic drinks.
Compared with the previous PET single-layer bottle, ml bottle can greatly improve the gas barrier of O2 and CO2, and the coloring will not reduce the transparency and strength. Only a few percent of nylon MXD6, O, and CO2 can be reduced by more than 1 / 2, which can extend the shelf life of beverages and foods (table 4-4-1). For beer, wine and Japanese wine drinks, we don't want o and gas to invade them, thus affecting the service life of wine. The escape of CO from carbonated drinks is also undesirable for packaging bottles. Composite coating production line www.handern.com
During the injection of PET / MX nylon multi-layer preforms, two injection machines are used, one for injection of pet and the other for injection of Nivea MXD6. A pair of composite mould is used to produce? 3-layer or S-layer bottle preforms, which are then stretched into bottles. Yamamura nitiko Co., Ltd. also produces multi-layer? Pet heat-resistant bottles, which are developed to solve the shortcomings of insufficient thermal filling and barrier properties of pet master bottles above 70c. Multi layer PET: the manufacturing methods of multi-layer PET bottles are classified according to the production methods of multi-layer parisons, which are progressive multi-layer molding method, multi-layer extrusion method and simultaneous multi-layer injection method. It is a structure in which a heat-resistant and high barrier intermediate layer resin is sandwiched between the inner and outer layers of pet. First, a small amount of PET was injected, then pet was injected with the interlayer resin at the same time, and finally PET resin was injected until the composite blank was formed. Using this method, the molding efficiency is better, the bottle mouth can be directly molded by injection molding, with excellent precision, no waste resin, and good molding economy. The intermediate layer resin used by Shancun nitrate subsidiary is polyarylate. This kind of polyarylate, like pet, belongs to ester building resin. Therefore, it has excellent adhesion to pet. Therefore, it is not necessary to add a layer of adhesive resin with compatibility period in CO injection molding. In addition, this kind of poly (aryl ester) copolymerized with pet can produce high heat resistance resin with excellent heat resistance because it has exactly the same properties as pet. We have selected the resin with balance of heat resistance and tensile property from poly (aryl ester) for use. Results the pet multi-layer stretching bottle can be filled at 85C. Composite coating production line www.handern.com
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