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1.发明申请公开(公告)号：US20140264969A1
公开(公告)日：2014-09-18
申请号：US14205032
申请日：2014-03-11
CPC分类号： B01F3/04269 , B01F2003/04297 , B01F2003/04319 , B29D99/005
摘要： A single-layer diffuser membrane constructed of first and second compounds. The first compound has structural and flexibility properties suitable for applying air to wastewater through a plurality of perforations formed through the membrane and the second compound is suitable for inhibiting fouling of the membrane. The first compound may comprise polyurethane and the second compound may comprise polytetrafluoroethylene. The concentration of the second compound within the membrane may be between about 3.0 vol. % and 20.0 vol. %. The second compound may be dispersed adjacent the perforations to inhibit fouling of the perforations. Another aspect of the present invention relates to the method for constructing the membrane. Upon the mixing of the first and second compounds, the mixed composition may be formed into a membrane through, for example, an extrusion process or a molding process. Perforations may be created either during or after the forming of the membrane.
摘要翻译： 由第一和第二化合物构成的单层漫射膜。 第一种化合物具有适于通过穿过膜形成的多个穿孔将空气施加到废水的结构和柔性，并且第二化合物适合于抑制膜的结垢。 第一化合物可以包含聚氨酯，第二化合物可以包含聚四氟乙烯。 膜内第二化合物的浓度可以在约3.0vol。 ％和20.0体积。 ％。 第二化合物可以分散在穿孔附近以抑制穿孔的结垢。 本发明的另一方面涉及构成膜的方法。 在混合第一和第二化合物时，混合组合物可以通过例如挤出法或模塑法形成膜。 可以在膜的形成期间或之后产生穿孔。
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公开(公告)号：US10105660B2
公开(公告)日：2018-10-23
申请号：US15586919
申请日：2017-05-04
摘要： A diffuser membrane and a method for manufacturing the same are provided. In the method for manufacturing, a first material is heated and extruded to form a base layer and a second material is heated and extruded to form a coating layer. The base layer and coating layer may be extruded substantially simultaneously in a coextrusion process. Accordingly, the coating may be applied to the base layer in a manner that optimizes the bonding between the two layers and provides the ability to control the thickness of the coating layer. Alternatively, the base layer is formed initially and the coating layer is subsequently formed thereover. The first and second materials have differing properties. The first material may comprise polyurethane and the second material may comprise polyurethane and PTFE.
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公开(公告)号：US20170296987A1
公开(公告)日：2017-10-19
申请号：US15586919
申请日：2017-05-04
CPC分类号： B01F3/04269 , B01F2003/04312 , B01F2003/04319 , B01F2003/04368 , B29C47/0004 , B29C47/0019 , B29C47/0023 , B29C47/021 , B29C47/065 , B29C47/26 , B29C47/56 , B29K2007/00 , B29K2995/0065
摘要： A diffuser membrane and a method for manufacturing the same are provided. In the method for manufacturing, a first material is heated and extruded to form a base layer and a second material is heated and extruded to form a coating layer. The base layer and coating layer may be extruded substantially simultaneously in a coextrusion process. Accordingly, the coating may be applied to the base layer in a manner that optimizes the bonding between the two layers and provides the ability to control the thickness of the coating layer. Alternatively, the base layer is formed initially and the coating layer is subsequently formed thereover. The first and second materials have differing properties. The first material may comprise polyurethane and the second material may comprise polyurethane and PTFE.
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