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Multi components

高品级多色式样、具有两个或多个组分的复杂注塑、装饰、印刷、纺织品和金属箔片的向后注射、具有装配的注塑等多组分中国足球赛在最近几年发展迅速:工艺不断更新,塑料和材料组合已加入在汽车、医疗和通信中国足球赛以及电子、包装和体育产业等领域不断更新的应用中。在仅仅几年前未想到的新应用已经出现。这归功于我们在住友 (SHI) 足球即时直播做出的重要贡献:多组分中国足球赛已经在上百的生产设施中大展身手:凭借创新的用户特定解决方案,与具有高生产力水平的高标准注塑质量相结合。


Technology
  • An overview of processing techniques

    Bi-injection – simultaneous or sequenced injection of two components into one cavity

    Core-back technique – injection of two components into one cavity one after the other, the space for the second component being accessed by shifting a valve

    Transfer technique – the preform is transferred manually or by means of a robot into the second cavity or second machine

    Rotary technique – transfer is by axial or vertical rotation with the rotary function provided for in the machine or in the mould

    Sandwich technique – different plastics are laminated together to produce a skin-and-core structure.


  • Benefits

    However different they may be, most multi-component techniques offer similar advantages

    Cycle times are signifi cantly shorter

    Setting-up of the machine is simpler and faster compared to two “mono material” machines

    Operations are simplified

    Assembly effort is reduced

    Quality assurance and reproducibility are enhanced

    Less floor space is required

    Energy consumption is lower


  • The range of applications

    The term “multi-component technology” denotes a variety of methods employing specially designed mould and machine features. Basically, they all use two or more injection units to inject two or more materials onto each other or in between each other. If injected onto each other, the components will either form an integral moulding (say an automotive taillight) or a split moulding (say, a closure with a seal ring). If injection is with a shot in between the other shots, referred to as the sandwich technique, a “laminated” structure is obtained, for instance, with a soft skin and a hard core (typically, regrind may be used for the core and virgin material to provide a high-quality surface).


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