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Continuous and very uniform distribution of pores throughout the film after stretching, providing an optimized balance between high breathability and good mechanical properties such as tear strength:
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A cross section of a polyethylene cast film prepared with Advanced compound shows a multilayered structure. |
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The stretching of the film leads to a ductile deformation of the polymer matrix and creates a three dimensional microporous network with highly oriented layers of polymer containing ultrafine calcium carbonate particles embedded in them. |
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The ultrafine particle sizes of calcium carbonate ensure a close contact among the stacked polymer layers, thus improving the tear strength of the stretched film. |
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Besides, the uniform pore distribution across the film creates a short pathway for a gas to escape leading to high film breathability at lower stretch ratios. |
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Summary of outstanding advantages provided by Advanced Compounds in< the production of Breathable Films |
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Highly breathable films can be obtained at lower stretching ratios.
Hence, those films possess superior mechanical properties (tensile and tear strength, tensile elongation). |
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Lower amount of rejections in the production of breathable films because of the improved film tear strength attained. |
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