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|  | Sefar can provide the following hydrophobic surface modifications: | | |
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.Surface modification
. | | .Standard coating
. | | .Super coating
. | | .Plasma coating
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| .Technology | | standard hydrophobic coating, wet-chemical technology | | super hydrophobic coating, nano-technology | | plasma hydrophobic coating |
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| .Properties | | coating thickness
< 1 µm, water and dust repellant surface | | coating thickness
< 1 µm, water and dust repellant surface | | permanent coating, thin coating (several nm), water and dust repellant surface |
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| .Advantages | | good hydrophobic properties | | highly hydrophobic properties, good bonding to fabric surface | | permanent bonding, wide range of surface modifications and substrates possible |
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| .Restrictions | | not possible on PP fabrics | | not possible on PP fabrics, ultrasonic welding restricted depending on fabric type | | not possible for metallized surfaces |
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| .Typical applications | | mobile phones,
fuel filter,
architecture fabrics | | fuel filter,
hydraulic filter, coalescer | | coalescer,
fuel filter |
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| .Sefar documentation | | Sefar solutions for | | Sefar solutions for | | Sefar solutions for |
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.Testing method
. | | 1) contact angle | | contact angle | | contact angle |
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| | 2) hydrostatic water column | | | | |
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| .Typical test values | | 1) depending on fabric type between 80 - 120 ° | | depending on fabric type between
100 - 140 ° | | depending on fabric type between
80 - 120 ° |
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| | 2) depending on fabric type between 1 and 16 cm | | | | |
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