2、 双面同时涂布Double-side coating unit
在整个涂布生产线中，烘箱占据整个设备的85%能量消耗， 因此克鲁纳特开发出高效和节能的生产工艺：
与用户一起，公司共同开发了硅油生产线完成同时双面涂布工艺和设备， 涂布过程中的能耗得到显著的优化， 特别适合无溶剂硅油涂布，尤其是双面胶带涂布应用。
双面同时涂布意味着在生产过程中只需要一次干燥过程， 被涂布基材也只要一次加热和冷却， 减少了能量消耗和材料的浪费， 同时降低了材料自身的热变性能。
在这个工艺过程中， 避免了和解决了纸张基材边缘失水卷边和过度干燥的问题，也就是后道工序中不需要回湿技术。
另外， 烘箱长度可以大大缩短， 双面同时涂布降低了纸张基材的干燥失水， 涂布生产线的缩短大大节省了厂房空间。 当然，操作人数也相应减少，一个操作员工可以同时完成双面涂布过程。
总之，双面涂布生产大大提高了生产效率- 这是德国克鲁纳特与用户共同成功的典范。
双面涂布生产设备单元是当前德国克鲁纳特集团公司的主流生产设备，已经应用在新的生产线上或改造现有已经运行的涂布生产线。
双面涂布生产工艺特别适合以纸张为基材的涂布产品，主要应用在涂布底材用于标签胶带材料或涂布纸。
另外，还有就是湿压湿多层涂布应用，这种涂布技术采用落帘坡流工艺， 双层-打底层和面涂同时完成。 这种精准的涂布速度可以达1300米/分钟。 这种工艺的优势在于多层涂布，一次干燥完成。 这个工艺的难点在于具有合适的涂布涂料的工艺配方。
在过去，当双面涂布时，需要按顺序逐次单面完成。 因此，需要两个涂布站和两套干燥单元。而如今，通过同时双面涂布技术，一次完成、大大节省了能耗、浪费、生产时间、操作员工，从而提高了生产效率。
As the dryer in coating lines accounts for up to 85% of energy consumption, KROENERT has developed an efficient, energy-saving coating process:
With a double-side coating unit - a process that KROENERT has developed for siliconisation together with one of their customers - the energy consumption of the coating process is significantly optimised. This concept is particularly suitable for solvent-free silicones; a typical application being double-sided adhesive tape. The simultaneous, double-side coating means that only one drying process is necessary, which leads to energy savings. The substrate is only being heated once in the dryer and then cooled, thereby reducing energy costs. Material waste is also reduced as the substrate is exposed to less thermal stress.
In this coating process it is ensured that the paper substrate does not curl and over-drying on one side is prevented. This means that there is no need for remoistening.
Another advantage is the shortened length of the dryer. Simultaneously coating the front and reverse sides clearly reduces the drying of the paper substrates, so the coating line can be significantly shortened so as to save space. It also means that fewer staff is required, since one operator is now able to monitor two coatings simultaneously.
The overall result shows a significant increase in line productivity – and joint success for KROENERT’s engineers and the customer.
The innovative double-side coating unit found its way into the KROENERT portfolio and can now be incorporated into new lines or retrofitted into existing lines.
The process of double-side siliconisation is particularly suitable for paper substrates, that are used as release liners for adhesive tapes for example or also for graphic products.
Alternatively wet-on-wet coating processes are possible. The coating is done via a slide die, with which two layers - primer and topcoat – can be applied simultaneously. This enables a precise coating application even at high speeds of up to 1,300 m/min. The advantage is that several coats can be applied, but only one drying process is required. The challenge is to develop suitable formulas for this process.
In the past, if a substrate was to be coated on both sides, this was regularly carried out sequentially in two consecutive processes. In the consequence this required two coating units and two dryers. Today these steps can be done in one process, reducing energy, waste, time and staff, while increasing efficiency.
产品亮点：
德国克鲁纳特集团公司认为其核心任务是不断增强或支持客户所要求工艺的有效性。。
在为标签行业的客户开发生产线时，提出了一个想法，即同时对纸张的两面进行涂覆。这就要求KROENERT的专家团队设计出一个卓越的解决方案——双面涂布装置。
正是技术的创新和不断经验投资和积累， 德国克鲁纳特专业队伍找到和实现创新的解决方案， 一个涂布设备单元可以实现单面或同时双面涂布，以及满足不同涂料同时涂布需求。
KROENERT sees it as one of their core tasks to enhance or support the effectiveness of processes for their clients.
In the development of a line for a customer in the label industry, the idea of simultaneously coating both sides came up. This was a case for the experts at KROENERT to come up with an excellent solution – the double side coating unit.
Investing much experience and technical innovation, the KROENERT team realised a novel solution. An individual coating unit was developed which enabled coating on one or both sides and at the same time allowing different coatings.
