CN101730576A - 膜层压板 - Google Patents

膜层压板 Download PDF

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Publication number
CN101730576A
CN101730576A CN200880016369A CN200880016369A CN101730576A CN 101730576 A CN101730576 A CN 101730576A CN 200880016369 A CN200880016369 A CN 200880016369A CN 200880016369 A CN200880016369 A CN 200880016369A CN 101730576 A CN101730576 A CN 101730576A
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CN
China
Prior art keywords
matrix
film
plate
heating element
bonded
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Granted
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CN200880016369A
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English (en)
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CN101730576B (zh
Inventor
K·劳迪奥
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EMD Millipore Corp
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Millipore Corp
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Priority to CN201310291120.7A priority Critical patent/CN103394291B/zh
Publication of CN101730576A publication Critical patent/CN101730576A/zh
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Publication of CN101730576B publication Critical patent/CN101730576B/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/003—Membrane bonding or sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/081—Manufacturing thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/082—Flat membrane modules comprising a stack of flat membranes
    • B01D63/084—Flat membrane modules comprising a stack of flat membranes at least one flow duct intersecting the membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/08—Flat membrane modules
    • B01D63/087—Single membrane modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/107—Organic support material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/34—Polyvinylidene fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
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    • B01D71/06—Organic material
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    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
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    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
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    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
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    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2422—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical
    • B29C66/24221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being circular, oval or elliptical being circular
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    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
    • B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
    • B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
    • B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • B29C66/30326—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined in the form of porosity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
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    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract

本发明提供一种层压板，包括热粘结在聚偏氟乙烯基质上的至少一个聚砜和/或聚醚砜多孔膜。

Description

膜层压板
相关申请
本申请要求享有于2007年5月17日提交的美国临时专利申请号60/930,585的优先权，其全文在此合并参考。
技术领域
本发明涉及一种膜结构，包括热粘结在PVDF(polyvinylidenefluoride，聚偏氟乙烯)基质上的聚砜膜或聚醚砜膜。
背景技术
目前，希望提供用来去除生物体液中的病毒的过滤装置，并在制造过滤装置的现场预杀菌并在使用该过滤装置的现场对其消毒。通常，生产现场的杀菌通过伽马射线实现，使用现场的消毒(sanitization)用碱来实现。碱消毒首先使用碱的水溶液(典型的是0.1当量氢氧化钠)，然后使用无菌水，之后是无菌缓冲液。因此，由于伽马射线和碱，过滤设备必须能够耐降解。
过滤设备所使用的元件包括粘结有过滤膜的支撑板，过滤膜通常包括聚砜(PS)膜或聚醚砜(PES)膜，因为利用它们可实现高性能超滤(UF)。
目前所知的是，PS或PES膜能够热粘结在丙烯酸类基质上。因为丙烯酸类不耐碱，它不适合在使用碱杀菌的方法中应用。
因为材料的相似性，PS或PES膜能够容易地热粘结在聚砜基质(板)上。但是，很难将板粘结在一起。典型的用来将板粘结在一起方法称为接触焊。该方法包括将两个塑料板与加热器接触直到塑料开始融化。然后从加热器上移开板，加热器滑出，板被压在一起。该方法需要塑料材料保持熔化直到两个板被压在一起，因而，当材料冷却时，两个板完全焊接在一起。很难应用这个方法将聚砜或聚醚砜板焊接在同样或相似的材料上。已经发现当移开加热元件后，熔化的PS或PES很快形成一层外壳，很难形成一个良好的板间结合。
已经尝试了其它方法并证明了很难将PS或PES焊接在一起或在成品中产生了副作用。这些方法包括激光焊接，射频(RF)焊接，振动焊接，超声焊接和溶剂焊接。激光和RF焊接不能产生足够强的粘结。振动和超声焊接导致不必要的PS或PES颗粒的产生。使用溶剂(如二氯甲烷)进行溶剂焊接也是很困难的，因为膜由相似的材料制成，它能够被溶剂改变或溶解。
因此，希望提供一种过滤盒元件，其包括热粘结在基质上且可以接触焊接的膜，并且没有前述的副作用。此外，希望提供的上述元件在暴露于伽马射线或碱下时能够耐降解。
发明内容
本发明提供过滤盒元件，其具有热粘结在聚偏氟乙烯基质上的PS或PES膜。然后两个或更多的PVDF基质简单容易地粘结在一起。热粘结通过将加热元件在压力下作用在包含PS或PES或它们的共聚物、或它们的混合物的膜上，其又与PVDF基质接触以部分熔化PVDF基质达到一定程度，在该程度下熔化的PVDF渗入到PS或PES膜孔。移开加热元件然后熔化的PVDF冷却凝固。膜与基质间的最终粘结足够强从而如果试图从基质移除膜会导致膜残渣保留粘结在基质上。于是两个或更多的PVDF基质能够彼此热粘结在一起。
附图说明
图1是本发明的过滤盒的分解视图。
图2是本发明的过滤盒的分解视图。
具体实施方式
按照本发明，膜可具有任意结构，例如对称或不对称(含皮层或不含皮层)或类似的。另外，该膜可具有任意孔隙，如反渗透(RO)膜，超滤(UF)膜，微滤(MF)膜或类似的。PS或PES膜熔点通常在约428°F(140℃)和约446°F(230℃)之间。上述膜是公知的且有很多制造商制造，包括Millipore Corporation of Billerica，Massachusetts，商品名称如Millipore的膜。优选的膜是通过共铸(co-cast)工艺制备的单体膜，其中复合膜是由两种或更多的聚合物溶液基本同时浇注在彼此之上形成的。这就容许创造独特的膜，例如具有不对称或对称的两个区域，一个不对称的区域和一个对称的区域以及类似的。每个区的孔径和厚度也可以不同。US 7,208,200描述了一种制造这样膜的方法。
粘结有PS和/或PES膜的PVDF基质可被设计为包括用于输送、渗透和/或滞留的内部端口，以及实现期望的流体流动的流体通道。PVDF的熔点通常在约284°F(140℃)和约356°F(180℃)之间。为了实现将一或多个PS和/或PES膜粘结到PVDF基质上，提供加热元件。优选地，加热元件与膜接触的部分具有防粘表面，如聚四氟乙烯(PTFE)，以使膜与基质的粘结不具有不利的影响。加热元件加热到温度约490°F(254℃)和约530°F(277℃)之间，且在至少与一部分PVDF基质重叠的期望粘结区域应用到膜上，并加压确保膜和基质间的密切接触。在加压条件下加热一段时间足以融化期望粘结区域的聚偏氟乙烯，允许熔化的聚偏氟乙烯渗透进入膜孔。然后将加热元件移开以与膜脱离接触，得到的层压材料冷却使得熔化的PVDF凝固。
第二PVDF基质可能包含或可能不包含所期望的膜，然后贴近前述已经密封了PS或PES膜的第一PVDF基质。第二基质可含有所期望的一或多个端口用于输送、渗透和/或滞留、排气或类似。
第二基质被加热元件加热然后挤压包含膜的第一PVDF基质的表面，以将第一和第二PVDF基质密封在一起。
下面的例子用来解释本发明而非限制本发明。
实施例1
如图1所示，聚醚砜UF膜10粘结在具有流体出口14的圆形PVDF支撑板12上。加热元件采用的温度为510°F(265℃)到540°F(282℃)。在压力20-30psig下密封时间为4-10秒。然后具有流体入口18的圆形PVDF顶板16在外缘20周围热粘结到PVDF支撑板12上，形成具有PES膜10、流体入口18和流体出口14的过滤盒，输送的所有流体在通过出口14之前需要通过膜10。优选的，在膜10与支撑板12粘接的区域外，顶板16粘结到支撑板12上。
根据实施例的所述装置，提供了整体密封在支撑板上的膜，以及液体紧密整体密封的底板和顶板。该制造方法简单，快速，容易并且提供一种在伽马射线和碱下都稳定的装置从而避免了以前的问题。
可选的，如所示的另一个端口19也可以在一个(如所示)或两个板12，16上使用。可装有合适的气体过滤器(未示出)用来排气，例如从Millipore Corporation of Billerica，Massachusetts.得到的
Figure G2008800163694D00041
排气过滤器。可替换地，其可以与导管(未示出)连接用于滞留物，然后可以将其返回到用于再循环的供给，如在切向流过滤中发生。
虽然图1示出了圆形的装置，但同样可以使用其它形式。例如，图2示出的典型的经常在箱式过滤装置中使用的板框结构。图2中，PS或PES膜30按照密封线36所示粘结在第一箱框34的表面32上。然后在膜粘附到第一箱框34上的区域36之外，第二箱框38粘结到第一箱框34上。箱框34和38上示出多个端口40。可以使用两个或更多的框架。多个箱体可以彼此堆叠形成一个适宜大小的装置。该箱体至少在每端最外侧的箱体上可以具有一个密封的外表面，或如本领域所公知的，它们可具有独立附加的坚硬的末端板(未示出)，同样由PVDF制成以类似的方式粘结在它们的外表面。

Claims (18)

1.一种层压板，包括至少一个多孔膜，所述至少一个多孔膜选自由聚砜、聚醚砜、它们的混合物和它们的共聚物组成的组，并热粘结到包括聚偏氟乙烯的基质上。
2.根据权利要求1所述层压板，其中所述膜包括聚砜。
3.根据权利要求1所述层压板，其中所述膜包括聚醚砜。
4.一种层压板，包括至少一个多孔膜，所述至少一个多孔膜包括聚砜和聚醚砜的混合物，其热粘结到包括聚偏氟乙烯的基质上。
5.一种层压板，包括至少一个多孔膜，所述至少一个多孔膜包括聚砜和聚醚砜的共聚物，其热粘结到包括聚偏氟乙烯的基质上。
6.根据权利要求1所述层压板，其具有多层膜。
7.根据权利要求5所述层压板，其具有多层膜。
8.根据权利要求1所述层压板，其中所述基质包括至少一个流体通道。
9.根据权利要求3所述层压板，其中所述基质包括至少一个流体通道。
10.根据权利要求5所述层压板，其中所述基质包括至少一个流体通道。
11.一种装置，包括：至少一个多孔膜，其选自由聚砜，聚醚砜，它们的混合物和它们的共聚物组成的组；包括聚偏氟乙烯的第一基质，所述膜已经热粘结在第一基质的表面上；包括聚偏氟乙烯的第二基质，其粘结在第一基质的包含膜的表面上。
12.根据权利要求11所述装置，其中第一基质具有形成在基质的与粘结有膜的表面相反的一侧上的端口，所述端口具有开口，所述开口延伸穿过第一基质到达与所述膜相邻的区域，且第二基质也具有形成在基质的与第二基质粘接到第一基质上的表面相反的一侧上的端口。
13.一种形成过滤装置的方法，包括：提供至少一个多孔膜，其选自由聚砜、聚醚砜、它们的混合物和它们的共聚物组成的组；提供第一和第二支撑板，其中第一和第二支撑板由PVDF形成，所述支撑板具有彼此面对的第一表面以及与各板的第一表面相反的第二表面，所述板分别具有至少一个端口，所述至少一个端口形成为从每个板的第一表面到达第二表面；将所述至少一个膜热粘结到第一支撑板的第一表面上；在第一板的第一表面的已经粘结有膜的区域外侧的区域，将第一板的第一表面热粘结到第二板的第一表面上。
14.根据权利要求13所述方法，其中在各自的外缘周围，第一板的第一表面粘结在第二板的第一表面上。
15.根据权利要求13所述方法，进一步包括提供加热元件，其加热到从约490°F(254℃)到约530°F(277℃)的温度，在膜的期望粘结的区域使用加热元件，以及移开加热元件并允许粘结冷却，其中所述粘结的区域至少与第一支撑板的第一表面的一部分重叠。
16.根据权利要求13所述方法，进一步包括提供加热元件，其加热到从约490°F(254℃)到约530°F(277℃)的温度；在膜的期望粘结的区域使用加热元件，以及移开加热元件并允许粘结冷却，其中所述粘结的区域至少与第一支撑板的第一表面的一部分重叠，且具有足够的压力以确保膜和支撑板的第一表面间的密切接触。
17.根据权利要求13所述方法，进一步包括提供加热元件，其加热到从约284°F(140℃)和约530°F(277℃)的温度，在期望粘结区域对第二支撑板的第一表面应用加热元件；移开加热元件，以及使第二支撑板的第一表面接触第一板的第一表面。
18.根据权利要求13所述方法，进一步包括提供加热元件，其加热到从约284°F(140℃)和约530°F(277℃)的温度，在期望粘结区域对第二支撑板的第一表面应用加热元件；移开加热元件，以及使第二支撑板的第一表面接触第一板的第一表面，其中在各自的外缘周围第一板的第一表面粘结到第二板的第一表面上。
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US20170056830A1 (en) 2017-03-02
EP2152392A1 (en) 2010-02-17
US10328393B2 (en) 2019-06-25
US20100181248A1 (en) 2010-07-22
WO2008144030A1 (en) 2008-11-27
CN103394291A (zh) 2013-11-20
JP4850968B2 (ja) 2012-01-11
CN103394291B (zh) 2016-12-07
DK2152392T3 (da) 2019-12-02
ES2755402T3 (es) 2020-04-22
US10322376B2 (en) 2019-06-18
JP2010527301A (ja) 2010-08-12
CN101730576B (zh) 2013-08-14

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