Extrusion Asia Edition 1-2016

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HOSOKAWA ALPINE Aktiengesellschaft
Peter-Doerfler-Str. 13-25, 86199 Augsburg, Germany
33 Extrusion Asia Edition 1/2016
我们设想，对生产2000mm宽40μm厚的九层结构薄膜和
相同规格十一层结构薄膜进行比较，那么，每千克薄膜产品
对人员的需求和所消耗的能源是保持恒定不变的。各层结构
如下：
5 % mLLDPE, 33 % LLDPE, 5 % TIE, 5 % PA, 4 %
EVOH, 5 %PA, 5 % TIE, 33 % LLDPE 以及 5 % mLLDPE 。
生产九层薄膜可实现最大产量为420 kg/h ，然而生产十一层
薄膜产量要高出30%，达到550kg/h 。11层结构能够实现较
高的产量，这是因为在九层结构中，两个独立的LLDPE层在
十一层结构中分别由两个相邻层所取代，每层的层厚比例都
是16.5%。由于对于产量的限制因素是融体流道，这样，两
条流道代替了一条流道，就可以实现较高的产量。 通过设备
的灵活性获得了较高的产量，所带来的结果是，87.5%的投
资在一年内可以得到返回。
采用九层生产线，如果要配置相同生产能力，随之而来
的是，对于不同层灵活性就会有许多限制。
明智而审慎的投资
总之，人们开始考虑增加一些投资，购买11层吹膜生产
线，增加的投资额大约是九层生产线的10% 到 15% 。生产商
将从高度的灵活性中获益，可以采用新的膜结构生产产品，
增加竞争优势，可以生产几乎是结构变化无穷的薄膜，一条
生产线就可以生产从单一的PE结构到11层高阻隔薄膜等各种
产品，并且，从产量明的显著增加可获得确定的产品收益。
多层结构薄膜常常能带来商业上的好处，可以通过共挤来添
加某些功能层，这样就不再需要进行后续的复合加工。这种
情况下对于最终产品都会有着非常严格的要求，采用11层高
阻隔薄膜，并与其他方式结合，例如采用金属化的外层原料
就可找出解决方案。可以将在线MDO（纵向单向拉伸生产
线）结合到吹膜生产线中来，这样就为提高阻隔功能和提高
薄膜刚度提供了新的可能性。同时，经过MDO能够保证薄膜
有着卓越的平整度和优异的厚度公差，这对于后续加工（例
如印刷和复合）有着非常良好的正面效果。
2016中国国际橡塑展：E1D15
channel. As a result of the higher output by equipment availa-
bility of 87.5% a return on investment in under one year can be
obtained.
Were a 9 layer line to be configured for the same output capa-
bility then substantial limitations in the flexibility of the indivi-
dual layers would be incurred.
A sensible and prudent investment
In summary, it can be stated that the additional investment
costs for an 11 layer blown film line, which amount approxima-
tely to an additional 10% to 15% over those for a 9 layer line,
definitely pay off. The producer profits from a the highest de-
gree of flexibility, can gain a competitive advantage with new
structures, can run an almost infinite variety of films from sim-
ple PE structures through to 11 layer high barrier films all on a
single line and on certain products benefits from significantly
higher outputs. Multilayer structures often offer commercial
benefits in that certain functional layers can be added by co-ex-
trusion eliminating the requirement for downstream lamination
steps. Where very stringent demands are imposed upon the fi-
nal product the combination of an 11 layer high barrier film
with e.g. a metalized outer layer can offer a solution. The inte-
gration of an in-line MDO (mono-axial machine direction orien-
tation line) offers an additional possibility to increase the barrier
functions and the film stiffness. At the same time use of the
MDO ensures that films display excellent flatness (planity) and
thickness tolerances, which have a very positive effect on
downstream processes such as printing and lamination.
Chinaplas 2016: E1D15
Optical film: quality – our experience – your benefit !
Process flow
Non-stop winding Secondary slitting Primary slitting Primary slitting
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