CN103566658B - Membrane composite filtration material and its processing technology - Google Patents

Membrane composite filtration material and its processing technology Download PDF

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CN103566658B
CN103566658B CN 201210249743 CN201210249743A CN103566658B CN 103566658 B CN103566658 B CN 103566658B CN 201210249743 CN201210249743 CN 201210249743 CN 201210249743 A CN201210249743 A CN 201210249743A CN 103566658 B CN103566658 B CN 103566658B
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layer
substrate
filter material
film layer
water
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CN 201210249743
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CN103566658A (en )
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王刚
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苏州托普斯环保科技有限公司
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Abstract

本发明公开了一种膜复合过滤材料,包括基材,在所述基材一侧设置有薄膜层,在所述基材与所述薄膜层之间涂覆有粘合层,所述粘合层将所述基材和所述薄膜层相连接,在所述基材的另一侧设置有防水层,在所述薄膜层的自由面也设置有防水层;采用本发明所提供的膜复合过滤材料及其加工工艺,通过将所述薄膜层与所述基材先进行粘合,再将所述防水层设置于所述薄膜层的外侧,使得基材与所述薄膜层的粘合性能较好,保证了所述过滤材料的防水性能,还能在保证过滤效率的同时减少了阻力。 The present invention discloses a membrane filter composite material comprising a substrate, a side of the base film layer is provided between the substrate and the film layer is coated with an adhesive layer, the adhesive the layer of the substrate and the thin film layer is connected to the other side of the substrate is provided with a water-repellent layer, free surface of the film layer is also provided with a waterproof layer; using the composite membrane of the present invention provides and processing the filter material, through the film layer and the substrate to be bonded, and then the outer waterproof layer disposed on the film layer, such that the adhesive properties of the base film layer preferably, to ensure that the water resistance of the filter material, but also to ensure filtration efficiency while reducing drag.

Description

一种膜复合过滤材料及其加工工艺 A membrane composite filter materials and processing technology

技术领域 FIELD

[0001] 本发明涉及一种空气过滤的过滤材料,具体涉及一种膜复合过滤材料及其加工工 [0001] The present invention relates to an air filter of the filter material, particularly relates to a membrane filter composite material and its processing stations

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背景技术 Background technique

[0002] 在一些环境复杂(高温、高湿、高腐蚀等)工况排放的污染物主要有烟尘、S02、SO3(即引起低温酸腐蚀的主要组成)、叫、册、0)2、队、!120等。 [0002] In contaminants complex environments (high temperature, high humidity, high corrosion) conditions of the main smoke emissions, S02, SO3 (i.e., caused mainly composed of low temperature acid corrosion), called, volumes, 0) 2, teams ,! 120 and so on. 其特点是烟气腐蚀性大、含湿量大、粉尘比电阻大、微细粉尘多,而且部分烟气中含有的油雾,细微絮状物等粘性物质易附着在滤料上造成滤料堵塞。 Which is characterized by large corrosive fumes, moisture amount, a large specific resistance of dust, fine dust, and oil mist, fine floc like viscous substance contained in the part of the fumes tends to adhere on the filter causing filter plugging . 因此,对滤料的选择提出了更高的要求。 Therefore, the choice of filter material put forward higher requirements.

[0003]目前,现有的过滤材料都是先进行防水处理,再进行膜复合处理,这样薄膜层就复合在防水层的外侧,薄膜与基材贴合不牢,同时,空气中的水蒸气还会附着在薄膜的表面,使得该过滤材料透气性能不好,从而也影响到渗透阻力。 [0003] Currently, the conventional filter materials are to be waterproofed, then treated composite membrane, so that the thin film layer on the outside of the composite, the substrate film bonded to the waterproof layer is not strong, while the water vapor in the air also attached to the surface of the film, so that the filter material is not good permeability, and thus also affect permeation resistance.

[0004]因此,一种能够使得薄膜贴合牢固、透气性能较好、防水较强、阻力较小的膜复合过滤材料及其加工工艺亟待出现。 [0004] Thus, one can make the film firmly bonded, preferably air permeability, waterproof strong, low resistance membrane filter composite material and its processing urgent occur.

发明内容 SUMMARY

[0005] 为解决上述技术问题,本发明的目的在于提供一种能够使得薄膜贴合牢固、透气性能较好、防水较强、阻力较小的膜复合过滤材料。 [0005] In order to solve the above problems, an object of the present invention is to provide a firmly bonded to such films, preferably air permeability, waterproof strong, low resistance film composite filter material.

[0006] 为达到上述目的,本发明的技术方案如下:一种膜复合过滤材料,包括基材,在所述基材一侧设置有薄膜层,在所述基材与所述薄膜层之间涂覆有粘合层,所述粘合层将所述基材和所述薄膜层相连接,在所述基材的另一侧设置有防水层,在所述薄膜层的自由面也设置有防水层。 [0006] To achieve the above object, the technical solution of the present invention is as follows: a membrane composite filter material, comprising a substrate provided with a thin film layer side of the substrate, between the substrate and the thin film layer coated with an adhesive layer, the adhesive layer connected to the substrate and the thin film layer on the other side of the substrate is provided with a waterproof layer, also provided on the free surface of the thin film layers have Waterproof layer.

[0007] 优选的,所述基材为无纺布。 [0007] Preferably, the substrate is a nonwoven fabric.

[0008] 优选的,所述粘合层为聚氨酯层。 [0008] Preferably, the adhesive layer is a polyurethane layer.

[0009] 优选的,所述防水层为含氟防水层。 [0009] Preferably, the waterproof layer is a fluorine-containing water-repellent layer.

[0010] 优选的,所述含氟防水层为聚四氟乙烯防水层。 [0010] Preferably, the waterproof layer is a fluorine-containing water-repellent layer of polytetrafluoroethylene.

[0011] 优选的,所述薄膜层为一透明薄膜层。 [0011] Preferably, the thin film layer is a transparent thin film layer.

[0012] 本发明还提供了一种膜复合过滤材料的加工工艺,包括以下步骤: [0012] The present invention further provides a process for the processing film composite filter material, comprising the steps of:

[0013] (I)通过上胶辊对基材一侧进行上胶,使得胶水均匀的涂布在基材表面,形成粘合层; [0013] (I) through the upper side of the substrate on the roller for the adhesive, so that a uniform glue coating on the surface of a substrate to form an adhesive layer;

[0014] (2)在涂布好胶水的基材上覆上薄膜; [0014] (2) film coated on a substrate covered with a good glue;

[0015] (3)通过烘干辊对薄膜和基材进行压合,压合温度不超过300°C,压合压力不超过6kg/N ; [0015] (3) by baking the substrate and the film roll nip, the nip temperature does not exceed 300 ° C, nip pressure does not exceed 6kg / N;

[0016] (4)对上述压合后的材料进行防水处理,将防水剂喷洒在上述材料表面; [0016] (4) on the material after the nip waterproofing, the water sprays the surface of the material;

[0017] (5)将上述经防水处理后的半成品通过辊轴挤压达到8kg/N、烘干温度控制在150 0C -200 °C,得成品。 [0017] (5) semi-finished product by the above-described water-repellent roller pressing reached 8kg / N, the drying temperature is controlled at 150 0C -200 ° C, to obtain the finished product.

[0018] 优选的,所述粘合层包含有聚氨酯。 [0018] Preferably, the adhesive layer comprises a polyurethane.

[0019] 优选的所述防水剂包括聚四氟乙烯和水,所述聚四氟乙烯和水按照体积比为1:4的比例进行配制。 [0019] Preferably the water and a waterproofing agent include polytetrafluoroethylene, polytetrafluoroethylene, and the volume ratio of water to 1: 4 ratio formulated.

[0020] 通过上述技术方案,本发明技术方案的有益效果是:一种膜复合过滤材料,包括基材,在所述基材一侧设置有薄膜层,在所述基材与所述薄膜层之间涂覆有粘合层,所述粘合层将所述基材和所述薄膜层相连接,在所述基材的另一侧设置有防水层,在所述薄膜层的自由面也设置有防水层;采用本发明所提供的膜复合过滤材料及其加工工艺,通过将所述薄膜层与所述基材先进行粘合,再将所述防水层设置于所述薄膜层的外侧,使得基材与所述薄膜层的粘合性能较好,保证了所述过滤材料的防水性能,还能在保证过滤效率的同时减少了阻力。 [0020] Through the above technical solutions, advantageous technical effects of the present invention is: a membrane filtration composite material comprising a substrate, at a side of the substrate provided with the thin film layer, the substrate and the thin film layer coated with an adhesive layer between the adhesive layer to connect the substrate and the film layer, a waterproof layer on the other side of the substrate, the free surface of the film layer also is provided with a waterproof layer; filtration membrane composite materials and processing technology provided by the present invention, by the thin film layer and the substrate to be bonded, and then the outer waterproof layer disposed on the thin film layer preferably, such that the base layer of the film adhesive properties, to ensure that the water resistance of the filter material, but also to ensure filtration efficiency while reducing drag.

附图说明 BRIEF DESCRIPTION

[0021 ] 为了更清楚地说明本发明实施例技术中的技术方案,下面将对实施例技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。 [0021] In order to more clearly illustrate the technical solutions according to embodiments of the present invention art, briefly describes the accompanying drawings required for describing the embodiments technique used in describing the embodiments. Apparently, the drawings described below are merely present invention Some embodiments of the present art ordinary skill, without creative efforts, can derive from these drawings other drawings.

[0022]图1为本发明一种膜复合过滤材料的实施例1的结构示意图。 Example 1 is a schematic view of the structure of Embodiment [0022] FIG 1 A membrane of the present invention the composite filter material.

[0023] 图中数字所表示的相应部件名称: [0023] FIG name corresponding member numbers indicated:

[0024] 1.基材2.薄膜层3.粘合层4.防水层。 [0024] 1. Base film layer 2. The adhesive layer 3. 4. waterproof layer.

具体实施方式 detailed description

[0025] 下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0025] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, those of ordinary skill in the art to make all other embodiments without creative work obtained by, it falls within the scope of the present invention.

[0026] 本发明提供了一种能够使得薄膜贴合牢固、透气性能较好、防水较强、阻力较小的膜复合过滤材料。 [0026] The present invention provides a method capable of firmly bonded so that the film is preferably air permeability, waterproof strong, low resistance film composite filter material.

[0027] 实施例1, [0027] Example 1,

[0028] 如图1所示,一种膜复合过滤材料,包括基材1,在所述基材I 一侧设置有薄膜层2,在所述基材I与所述薄膜层2之间涂覆有粘合层3,所述粘合层3将所述基材I和所述薄膜层2相连接,在所述基材I的另一侧设置有防水层4,在所述薄膜层2的自由面也设置有防水层4。 [0028] 1 A film composite filter material, comprising a substrate 1, disposed on one side of the substrate I with a film layer 2, between the substrate coated with the film layer 2 I 3 coated with an adhesive layer, the adhesive layer 3 to the substrate and the thin film layer I 2 is connected, is provided with a waterproof layer on the other side of the substrate 4 is I, the thin film layer 2 the free surface 4 is also provided with a waterproof layer.

[0029] 在上述技术方案中,通过将薄膜层2与基材I相粘合,使得薄膜层2能够较牢固的与所述基材I粘合,然后再在最外围设置防水层4,使得薄膜层2的防水性能较强,且透气性能也较好。 [0029] In the above aspect, by a thin film layer 2 adhered to the substrate I-phase, so that the film layer 2 can be relatively firmly bonded to the substrate I, and then disposed in the outermost periphery of the waterproof layer 4, such that strong waterproof film layer 2, and also good air permeability.

[0030] 所述基材I为无纺布,所述粘合层3为聚氨酯层,所述防水层4为含氟防水层,所述含氟防水层为聚四氟乙烯防水层。 [0030] I is the nonwoven fabric substrate, the adhesive layer is a polyurethane layer 3, the waterproof layer 4 is a fluorine-containing water-repellent layer, the fluorine-containing water-repellent layer is a waterproof layer of polytetrafluoroethylene.

[0031] 本发明还提供了一种膜复合过滤材料的加工工艺,包括以下步骤: [0031] The present invention further provides a process for the processing film composite filter material, comprising the steps of:

[0032] (I)通过上胶辊对基材I 一侧进行上胶,使得胶水均匀的涂布在基材I表面,形成粘合层3,所述粘合层3包含聚氨醋; [0032] (I) by the roller on the I side of the substrate for the glue, the glue so that a uniform coating surface of the base I, the adhesive layer 3 is formed, the adhesive layer 3 comprises a polyurethane vinegar;

[0033] (2)在涂布好胶水的基材I上覆上薄膜; [0033] (2) covered with a coating film on a substrate I good glue;

[0034] (3)通过烘干辊对薄膜和基材I进行压合,压合温度不超过300°C,压合压力不超过6kg/N ; [0034] (3) crimping the film roll and the substrate I by drying, pressing temperature does not exceed 300 ° C, nip pressure does not exceed 6kg / N;

[0035] (4)对上述压合后的材料进行防水处理,将防水剂喷洒在上述材料表面,所述防水剂包括聚四氟乙烯和水,所述聚四氟乙烯和水按照体积比为1:4的比例进行配制; [0035] (4) on the material after the nip waterproofing, the water sprays the surface of the material, and the water repellent include polytetrafluoroethylene, polytetrafluoroethylene, and the volume ratio of water 1: 4 ratio formulated;

[0036] (5)将上述经防水处理后的半成品通过辊轴挤压达到8kg/N、烘干温度控制在150°C,得成品。 [0036] (5) semi-finished product by the above-described water-repellent roller pressing reached 8kg / N, the drying temperature was controlled at 150 ° C, to obtain the finished product.

[0037] 实施例2, [0037] Example 2,

[0038] 其余与上述实施例相同,不同之处在于,在所述基材I的两面均设置有薄膜层2,在所述薄膜层2与所述基材I之间均设置有所述粘合层3。 [0038] The remainder of the previous embodiment, except that, on both surfaces of the substrate I is provided with a thin-film layer 2, between the film layer 2 to the substrate provided with the adhesive I seal layer 3.

[0039] 本发明还提供了一种膜复合过滤材料的加工工艺,包括以下步骤: [0039] The present invention further provides a process for the processing film composite filter material, comprising the steps of:

[0040] ( I)通过上胶辊对基材一侧进行上胶,使得胶水均匀的涂布在基材表面,形成粘合层; [0040] (I) through the upper side of the substrate on the roller for the adhesive, so that a uniform glue coating on the surface of a substrate to form an adhesive layer;

[0041] (2)在涂布好胶水的基材上覆上薄膜; [0041] (2) film coated on a substrate covered with a good glue;

[0042] (3)通过烘干辊对薄膜和基材进行压合,压合温度不超过300°C,压合压力不超过6kg/N ; [0042] (3) by baking the substrate and the film roll nip, the nip temperature does not exceed 300 ° C, nip pressure does not exceed 6kg / N;

[0043] (4)对上述压合后的材料进行防水处理,将防水剂喷洒在上述材料表面; [0043] (4) on the material after the nip waterproofing, the water sprays the surface of the material;

[0044] (5)将上述经防水处理后的半成品通过辊轴挤压达到8kg/N、烘干温度控制在200 °C,得成品。 [0044] (5) semi-finished product by the above-described water-repellent roller pressing reached 8kg / N, the drying temperature was controlled at 200 ° C, to obtain the finished product.

[0045] 实施例3, [0045] Example 3,

[0046] 其余与上述实施例相同,不同之处在于,所述薄膜层2为一透明薄膜层2。 [0046] The rest of the previous embodiment, except that the thin film layer 2 is a transparent thin film layer 2.

[0047] 本发明还提供了一种膜复合过滤材料的加工工艺,包括以下步骤: [0047] The present invention further provides a process for the processing film composite filter material, comprising the steps of:

[0048] ( I)通过上胶辊对基材一侧进行上胶,使得胶水均匀的涂布在基材表面,形成粘合层; [0048] (I) through the upper side of the substrate on the roller for the adhesive, so that a uniform glue coating on the surface of a substrate to form an adhesive layer;

[0049] (2)在涂布好胶水的基材上覆上薄膜; [0049] (2) film coated on a substrate covered with a good glue;

[0050] (3)通过烘干辊对薄膜和基材进行压合,压合温度不超过300°C,压合压力不超过6kg/N ; [0050] (3) by baking the substrate and the film roll nip, the nip temperature does not exceed 300 ° C, nip pressure does not exceed 6kg / N;

[0051] (4)对上述压合后的材料进行防水处理,将防水剂喷洒在上述材料表面; [0051] (4) on the material after the nip waterproofing, the water sprays the surface of the material;

[0052] (5)将上述经防水处理后的半成品通过辊轴挤压达到8kg/N、烘干温度控制在175 °C,得成品。 [0052] (5) semi-finished product by the above-described water-repellent roller pressing reached 8kg / N, the drying temperature was controlled at 175 ° C, to obtain the finished product.

[0053] 高效过滤一般是指大于等于0.3 μπι的粒径,过滤效率在99.97%以上。 [0053] Efficient filtering generally refers to a particle size of not less than 0.3 μπι, filtration efficiency of 99.97% or more. 欧盟ΕΝ1822规定检漏测试只要被测过滤器的局部透过率不超过规定的局部值便为合格,Η13级高效过滤器对应的局部透过率为0.25%,常规的阻力一般在300Pa以上。 EU ΕΝ1822 predetermined leak tested as long as the local transmittance of the filter under test does not exceed the predetermined value will be qualified local, local transmittance Η13 efficient filter stage corresponding to 0.25%, generally in a conventional resistance than 300Pa.

[0054] 对上述制成的产品在过滤材料综合测试仪上进行DOP检测,来测试所述膜复合过滤材料的空气过滤的效率和阻力,过滤效率达到99.97%以上,阻力在250Pa ;本产品在保证了过滤效率为99.97%的基础上,降低了阻力。 [0054] The products made in the above-described filter material DOP tester detection, test air to said membrane filter material composite filtration efficiency and resistance, filtration efficiency of 99.97% 250Pa resistance; this product ensure the filtration efficiency of 99.97% based on a reduction in drag.

[0055] 通过上述技术方案,本发明技术方案的有益效果是:一种膜复合过滤材料,包括基材1,在所述基材I 一侧设置有薄膜层2,在所述基材I与所述薄膜层2之间涂覆有粘合层3,所述粘合层3将所述基材I和所述薄膜层2相连接,在所述基材I的另一侧设置有防水层4,在所述薄膜层2的自由面也设置有防水层4 ;采用本发明所提供的膜复合过滤材料及其加工工艺,通过将所述薄膜层2与所述基材I先进行粘合,再将所述防水层4设置于所述薄膜层2的外侧,使得基材I与所述薄膜层2的粘合性能较好,保证了所述过滤材料的防水性能,还能在保证过滤效率的同时减少了阻力。 [0055] Through the above technical solutions, advantageous technical effects of the present invention is: a membrane filtration composite material comprising a substrate 1, disposed on one side of the substrate I with a film layer 2, the substrate I and the coated film layer 2 between the adhesive layer 3, the adhesive layer 3 to the substrate and the thin film layer I 2 is connected to the other side of the substrate I is provided with a waterproof layer 4, free surface of the film layer 2 is also provided with a waterproof layer 4; filtration membrane composite materials and processing technology provided by the present invention, the thin film are adhered by the layer 2 and the first substrate I , then the waterproof layer 4 is disposed on the outer side of the thin film layer 2, so that the substrate I and the film layer 2 is preferably adhesive properties to ensure that the water resistance of the filter material, but also to ensure the filter efficiency while reducing drag.

[0056] 对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本发明。 [0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。 Various modifications to these professionals skilled in the art of the present embodiments will be apparent, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. 因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。 Accordingly, the present invention will not be limited to the embodiments shown herein but is to be accorded herein consistent with the principles and novel features disclosed widest scope.

Claims (9)

  1. 1.一种膜复合过滤材料,其特征在于,包括基材,在所述基材一侧设置有薄膜层,在所述基材与所述薄膜层之间涂覆有粘合层,所述粘合层将所述基材和所述薄膜层相连接,在所述基材的另一侧设置有防水层,在所述薄膜层的自由面也设置有防水层。 A membrane composite filter material comprising a substrate, a side of the base film layer is provided between the substrate and the film layer is coated with an adhesive layer, the the pressure-sensitive adhesive layer of the substrate and the thin film layer is connected to the other side of the substrate is provided with a water-repellent layer, free surface of the film layer is also provided with a waterproof layer.
  2. 2.根据权利要求1所述的膜复合过滤材料,其特征在于,所述基材为无纺布。 2. The composite membrane filter material according to claim 1, wherein the substrate is a nonwoven fabric.
  3. 3.根据权利要求2所述的膜复合过滤材料,其特征在于,所述粘合层为聚氨酯层。 3. The composite membrane filter material according to claim 2, wherein the adhesive layer is a polyurethane layer.
  4. 4.根据权利要求3所述的膜复合过滤材料,其特征在于,所述防水层为含氟防水层。 4. The composite membrane filter material according to claim 3, wherein the waterproof layer is a fluorine-containing water-repellent layer.
  5. 5.根据权利要求4所述的膜复合过滤材料,其特征在于,所述含氟防水层为聚四氟乙烯防水层。 The composite membrane of claim 4 filter material according to claim, wherein the fluorine-containing water-repellent layer is a waterproof layer of polytetrafluoroethylene.
  6. 6.根据权利要求5所述的膜复合过滤材料,其特征在于,所述薄膜层为一透明薄膜层。 5 6. The composite membrane of the filter material according to claim, wherein said film layer is a transparent thin film layer.
  7. 7.一种膜复合过滤材料的加工工艺,其特征在于,包括以下步骤: (1)通过上胶辊对基材一侧进行上胶,使得胶水均匀的涂布在基材表面,形成粘合层; (2)在涂布好胶水的基材上覆上薄膜; (3)通过烘干辊对薄膜和基材进行压合,压合温度不超过300°C,压合压力不超过6kg/N; (4)对上述压合后的材料进行防水处理,将防水剂喷洒在上述材料表面; (5)将上述经防水处理后的半成品通过辊轴挤压达到8kg/N、烘干温度控制在150 0C -200 °C,得成品。 Process A film composite filter material, characterized by comprising the steps of: (1) by the roller pair on the side of the substrate plastic, such that a uniform glue coating on the surface of a substrate to form an adhesive layer; (2) covered with glue coating a substrate with a good film; (3) for pressing the film and the substrate by roller drying, pressing temperature does not exceed 300 ° C, nip pressure does not exceed 6kg / N; (4) the material after lamination waterproofing, the water sprays the surface of the material; (5) semi-finished product by the above-described water-repellent roller pressing reached 8kg / N, to control drying temperature at 150 0C -200 ° C, to obtain the finished product.
  8. 8.根据权利要求7所述的膜复合过滤材料的加工工艺,其特征在于,所述粘合层包含有聚氨酯。 Process according to claim membrane composite filter material of claim 7, wherein the adhesive layer comprises a polyurethane.
  9. 9.根据权利要求8所述的膜复合过滤材料的加工工艺,其特征在于,所述防水剂包括聚四氟乙烯和水,所述聚四氟乙烯和水按照体积比为1:4的比例进行配制。 Process according to claim membrane composite filter material of claim 8, wherein said waterproofing agent comprises water and a polytetrafluoroethylene, said polytetrafluoroethylene and water in a volume ratio of 1: 4 ratio formulated.
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CN101804274A (en) * 2010-04-23 2010-08-18 杭州路先非织造股份有限公司 Spunlace non-woven fabric composite filter material and manufacturing method thereof
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CN202682933U (en) * 2012-07-19 2013-01-23 苏州托普斯环保科技有限公司 Film composite filtering material

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EP0928220B1 (en) * 1996-07-11 2002-03-20 W.L. GORE & ASSOCIATES, INC. Cleanable filter elements
CN1589171A (en) * 2001-12-08 2005-03-02 Ibs 菲尔特兰塑料金属产品有限公司 Multi-layer composite filter element for series filtration
CN101861195A (en) * 2007-11-14 2010-10-13 日东电工株式会社 Filter filtration material, method for producing the same and filter unit
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