CN1580390A - 纸机织物 - Google Patents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
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- D21F1/00—Wet end of machines for making continuous webs of paper
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24636—Embodying mechanically interengaged strand[s], strand-portion[s] or strand-like strip[s] [e.g., weave, knit, etc.]
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/2481—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including layer of mechanically interengaged strands, strand-portions or strand-like strips
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2008—Fabric composed of a fiber or strand which is of specific structural definition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2279—Coating or impregnation improves soil repellency, soil release, or anti- soil redeposition qualities of fabric
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2311—Coating or impregnation is a lubricant or a surface friction reducing agent other than specified as improving the "hand" of the fabric or increasing the softness thereof
Abstract
本发明涉及一种纸机织物,特别是一种成形网或者烘缸毛毯,其具有纸张侧和机器侧,纸张侧由例如为带层、纱线、卷材或者平面元件棒等形式的塑性元件(1,11,21,31)制成,塑性元件至少设置在构成纸张侧的表面上,且涂有不粘涂层(5,6,14,15,24,25,34,35),该不粘涂层的粘结度低于塑性元件(1,11,21,31)的主要制造材料的粘结度,其中,塑性元件(1,11,21,31)至少在纸张侧上具有其内加入有不粘涂层(5,6,14,15,24,25,34,35)的凹坑(3,4,12,13,22,23,32,33)。
Description
相关申请和优先权声明的交叉引用
本申请要求享有2003年8月13日向欧洲专利局提交的申请号为03018342.0的申请的优先权,其公开内容作为参考引入本文。
技术领域
本发明涉及一种纸机织物,尤其是一种成形网或者烘缸毛毯,其具有纸张侧(paper side)和机器侧(machine side),该纸张侧由塑性元件制成,该塑性元件优选为带层、纱线、卷材或者平面元件棒等形式,所述塑性元件设置在纸张侧上,且涂有一层不粘涂层,该不粘涂层的粘结度低于塑性元件的主要制造材料的粘结度。
背景技术
纸机织物是在造纸机中用作形成和运送纸幅的长的宽带。它们是环形的,并且在造纸机中的辊子上循环。由于纸幅在它上面运送,因此它的外部平坦面构成纸张侧。由于它的内部平面在造纸机的辊子上运转,因此它的内部平坦面被称作机器侧。
造纸机基本上包括三个部分,也称作部(section)。在第一部—纸张成形部—中,成形网被用作纸机织物。它们通常由用单丝生产得到的织物制成。成形网的目的是形成纸幅和使纸幅通过成形网脱水。在下一个部—压榨部—中,纸幅承受高压以达到进一步脱水的目的。特别地,在压榨部分使用包括纺织或编织的支架和其上的无纺布针刺毛毯(参照US4,943,476)的压榨毛毯。在接下来的干燥部中,纸幅通过烘缸毛毯在被加热的辊子上被引导前进来进行加热脱水。虽然编织物也被提出使用,但是烘缸毛毯主要作为纺织物(参照US4,621,663)或者作为所谓的网带(wire element belts)(参照DE24 19 751 C3,US4,796,749,US5,534,333)在许多实施例中都被用到。这些网带由横向于机器方向延伸的卷材构成,这些卷材通过连接线彼此接合在一起。另外,还有建议主张用横向于机器方向延伸的多个平面元件棒来组装成纸机织物,这些平面元件棒通过连接线(参照DE37 35 709 C2,EP1 036 251 A1)彼此连接在一起。纸机织物由多孔的或设置有开口的(参照EP0 817 886B1,US 4,541,895,WO92/17643)塑性层制成。
除了上述纸机织物之外,还设有辅助带,例如用于从一个部向另一个部传送纸幅的传送带和靴形压榨带。就象上述的纸机织物一样,就它们的表面构成和结构来说,它们各自适合于自己的目的。
除了使用毡制的材料作为纸机织物之外,这种纸机织物的表面还可以由塑性元件制成。就纺织物和编织物来说,它们是纱线,特别是单丝。就网带(参照US4,796,749)来说,它们的表面由卷材制成。同样的将应用于由平面元件棒或者挤出体(extruded segments)(参照DE3735 109 C2,EP1 036 251 A1)构成的纸机织物。具有塑性层的或者至少在一面上由塑性层构成的纸机织物都具有非常光滑的表面(参照EP0 817 886 B1)。
关于这一点,问题在于污染物以小颗粒的形式沉积在纸机织物的纸张侧上,并且聚集形成大的污物沉淀。它们来自于纸张产品的原材料。特别地,污物颗粒的来源是废纸。然而,在一年当中相当长的时间里,纤维素也产生粘性污染物。污染物所涵盖的范围包括树脂、油类到印刷墨的水粘结剂等。这些污染物干扰了纸幅的生产并且使人们必须进行清洁或者甚至过早地更换造纸机中的纸机织物。
在生产纸幅之前,人们已付出了复杂和昂贵的努力来将这些污物从纸张原材料中进行清除或者掩盖。不过,在纸机织物上污物的沉淀仍然继续发生。因此,人们试图将构成纸机织物的平坦侧面的塑性元件上涂覆一层不粘涂层,该不粘涂层由例如碳氟化合物或硅树脂化合物构成。与制成塑性元件的材料相比,污物颗粒对这种涂层的粘结效果要差。然而,由于它们会因为磨损而被从纸机织物表面摩擦掉,因此这种不粘涂层所起的效果只是短暂的。
US4,541,895公开了一种由多个带有开口的层构成的纸机织物。关于这一点,它建议在纸张侧的层上形成凹坑,并且在凹坑中加入去垢剂。在纸机织物的工作过程中,去垢剂从凹坑中被慢慢地传递到洗涤槽中,从而形成了一种自动清洗的效果。然而,上述的污染物不能随着去垢剂一起被去掉。而且它们只在含水的环境中有效,并且产生泡沫。一旦去垢剂被不断传递消耗完,这种清洗效果就结束了。
WO01/21884 A1提出对构成面对纸幅的表面(纸张侧)的那些塑性元件施加一个深度在5微米到100微米之间的粗糙度,从而防止污染物的沉积。这是基于不给污物颗粒提供任何大的可以形成粘结表面的连续接触部域的想法。这试图显著促进污物颗粒凝块的分离,并防止这些凝块增大到影响纸幅质量的尺寸。然而,这种方法的效果并不令人满意,特别是对尘屑和粉末形式的沉积物。
发明内容
本发明的目的是具体提供一种纸机织物,其中,污物颗粒的沉积能以比已知纸机织物更有效并且也更持久的方式来避免。
根据本发明,这种目的是这样来实现的,塑性元件至少在纸张侧上具有凹坑,凹坑中加入有不粘涂层。从而,本发明就重新回到具有不粘涂层的纸机织物这个问题上来。然而,与所使用的已知方法相比较,不粘涂层加入到成形于塑性元件中的凹坑中,最好是与构成纸张侧的塑性元件的表面齐平。从而在纸张侧上会产生具有防止污物颗粒联接的不粘效果的部域。由于不粘涂层以保护的方式位于凹坑中,并且随着塑性元件本身的磨损而脱落,因此该效果也是持久的。凹坑的深度可以通过这样一种方式来调节,即直到该纸机织物的使用寿命结束,一直会有充足的不粘涂层存在。
如果位于凹坑之间的塑性元件表面部域在生产过程中也具有不粘涂层,关于这一点不会产生麻烦。不粘涂层部分由于受到磨损而不会具有很长的使用寿命,但是位于凹坑中的不粘涂层和它持久的粘附效果会保持不受影响,并且可靠地防止污物颗粒的联接。
该不粘效果可以通过凹坑的构造、尺寸和分布来调整,采用这样的方法,一方面塑性元件的强度和它们的耐磨性被略微地或者只在一个可以接受的范围之内减小,另一方面不粘效果被尽可能地优化,从而使纸机织物的清洁不再需要或者只在较长时间间隔之后才需要。
在本发明的一个实施例中,最理想的凹坑是具有V形或者U形横截面。然而,其他横截面形状也是可能的。它们可以被具体化为单独的盲孔。然而,就加工生产而言,最好是将这些凹坑具体化为凹槽,这是因为然后它们可以直接成形在通过相应的喷嘴形状挤出的塑性元件的挤出物上。凹槽可以是直线形的,但也可以以起伏或弯曲的方式延伸。
为了最大可能地获得有不粘作用的部域,凹坑彼此可以直接以它们的边缘相连接。然而,为了获得良好的塑性元件表面耐磨性,可以将凹坑间隔开,以使由塑性元件的材料制成的表面部域位于它们之间,这是有用的。
本发明的基本思想适合于构成纸张侧的任何塑性元件的实施。特别适合于在横向于纸机织物平面的方向上其高度小于其宽度的扁纱,因为这种扁纱可以提供一个较大的部域来在纸张侧上形成凹坑。在这方面,这种扁纱不需要具有矩形横截面,但是可以有一个梯形或椭圆形或其他任何形状的轮廓。该扁纱可以被接合到纺织物或编织物中,但是也可以构成网带的卷材(coils)。除了由几圈彼此熔合在一起的(参考US5,591,525)单独纱线组装塑性元件之外,这种可能性是存在的。一些异形横截面形状也是适合的,例如从DE4 031 608 A1,US5,361,808,EP1 067 239 A2,EP0 995 835 A1,US3,158,984和GB1 053 282中已知的。采用这种细长的塑性元件,则凹坑应当沿它们的纵向延伸。
凹坑应当具有一个深度,该深度为塑性元件在深度方向的延伸部分的10至50%。
很容易理解,其中填充有不粘涂层的凹坑的设置不需要局限于纸张侧。这些凹坑应当分布在任何污物颗粒沉积发生的地方。这也可以分布在塑性元件的与纸张侧相面离(face away from)的一侧上。带有不粘涂层的凹坑也可以分布在那些形成在机器侧上的表面的塑性元件上。
通常用于纸机织物制造的所有热塑性塑料或者类似聚合物都适合作为塑性元件的材料。例如,这样的材料有PET,PPS,PP,PA,PS,PEN,PEK和/或PEEK,以及这些材料的混合物。适合用于不粘涂层的材料是那些先前的不粘涂层已经使用的材料,也就是,硅树脂,碳氟化合物或氟乙烯。
附图简介
参照典型的实施例,本发明进一步在附图中得以说明。在附图中:
附图1是本发明中用于纸机织物的扁纱的第一实施例的剖面图;
附图2是本发明中用于纸机织物的扁纱的第二实施例的剖面图;
附图3是本发明中用于纸机织物的扁纱的第三实施例的剖面图;
附图4是本发明中用于纸机织物的扁纱的第四实施例的剖面图。
优选实施例具体描述
附图1所示的扁纱1由五根单独的纱线组成(作为举例,由附图标记2表示),这五根纱线的横截面为圆形,它们在同一平面上一个挨一个地排列在一起,并且相互熔合在一起。这样的结果就是在扁纱1的上侧面和下侧面上形成了扁平的V形凹坑(作为举例,在上侧面由附图标记3表示,在下侧面由附图标记4表示)。凹坑3、4均被带有不粘涂层的单独纱线2填平(作为举例,在上侧面由附图标记5表示,在下侧面由附图标记6表示)。凹坑3、4以及不粘涂层5、6沿着扁纱1的纵向延伸,也就是象扁纱1那样垂直于附图平面延伸。不粘涂层5、6防止污物颗粒附着到扁纱1的上、下表面上。
附图2所示的扁纱11具有矩形的横截面。在扁纱11的上、下侧面形成的是U形凹坑(作为举例,在上侧面由附图标记12表示,在下侧面由附图标记13表示)。凹坑12、13沿着扁纱11的纵向延伸,也就是垂直于附图平面延伸。不粘涂层(作为举例,在上侧面由附图标记14表示,在下侧面由附图标记15表示)加入到凹坑12、13中。由自身材料制成的扁纱11的表面部分在凹坑12、13之间延伸。这种材料的耐磨性可以承受轻微的磨损,从而所加入的不粘涂层14、15在由这种扁纱11构成的纸机织物的整个运转寿命中是可用的。
附图3显示了一个基本为矩形的、但是向两边呈锥形逐渐变细的扁纱21。在上、下两个侧面上,扁纱21具有V形截面的凹坑(作为举例,在上侧面由附图标记22表示,在下侧面由附图标记23表示),凹坑中填充有不粘涂层(在上侧面由附图标记24表示,在下侧面由附图标记25表示)。凹坑22、23沿扁纱21的纵向方向彼此平行地延伸,也就是垂直于附图平面延伸。
附图4中所示的扁纱31与附图3中所示的扁纱21基本上没有部别。它有一个带有V形凹坑(作为举例,在上侧面由附图标记32表示,在下侧面由附图标记33表示)的绝对的矩形横截面,V形凹坑沿着纵向延伸,其中填有不粘涂层(作为举例,在上侧面由附图标记34表示,在下侧面由附图标记35表示)。如附图3所示的实施例,凹坑32、33直接彼此邻接,从而没有由扁纱31自身材料制成的表面部域存在。然而,通过磨损会产生逐渐变宽的部域。
Claims (12)
1.一种纸机织物,特别是一种成形网或者烘缸毛毯,其具有一纸张侧和一机器侧,纸张侧由例如为带层、纱线、卷材或者平面元件棒等形式的塑性元件(1,11,21,31)制成,塑性元件至少设置在构成纸张侧的表面上,且涂有不粘涂层(5,6,14,15,24,25,34,35),该不粘涂层的粘结度低于塑性元件(1,11,21,31)的主要制造材料的粘结度,
其中,塑性元件(1,11,21,31)至少在纸张侧上具有其内加入有不粘涂层(5,6,14,15,24,25,34,35)的凹坑(3,4,12,13,22,23,32,33)。
2.根据权利要求1所述的纸机织物,其特征在于,该凹坑(3,4,12,13,22,23,32,33)中填充有不粘涂层(5,6,14,15,24,25,34,35),且填充至与塑性元件(1,11,21,31)的表面齐平。
3.根据权利要求1所述的纸机织物,其特征在于,该凹坑(3,4,12,13,22,23,32,33)具有梯形或孔形的横截面。
4.根据权利要求1所述的纸机织物,其特征在于,该凹坑(3,4,12,13,22,23,32,33)具体体现为凹槽的形式。
5.根据权利要求1所述的纸机织物,其特征在于,该凹坑(22,23,32,33)在其边缘处直接邻接。
6.根据权利要求1所述的纸机织物,其特征在于,该塑性元件具体体现为扁纱(1,11,21,31)。
7.根据权利要求6所述的纸机织物,其特征在于,该扁纱(1,11,21,31)具有矩形、梯形或椭圆形轮廓。
8.根据权利要求1所述的纸机织物,其特征在于,该塑性元件(1)由彼此熔合在一起的多圈单独的纱线(2)组合成。
9.根据权利要求1所述的纸机织物,其特征在于,该凹坑(3,4,12,13,22,23,32,33)沿着塑性元件(1,11,21,31)延伸。
10.根据权利要求1所述的纸机织物,其特征在于,该凹坑(3,4,12,13,22,23,32,33)具有一个深度,该深度为塑性元件(1,11,21,31)的在深度方向上的延伸部分的10至50%。
11.根据权利要求1所述的纸机织物,其特征在于,该凹坑(4,13,23,33)也设置在塑性元件(1,11,21,31)的与纸张侧相面离的侧面上。
12.根据权利要求1所述的纸机织物,其特征在于,机器侧也由塑性元件(1,11,21,31)构成,该塑性元件包括其内加入有不粘涂层(5,6,14,15,24,25,34,35)的凹坑(3,4,12,13,22,23,32,33)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP03018342.0 | 2003-08-13 | ||
EP20030018342 EP1507039B1 (de) | 2003-08-13 | 2003-08-13 | Papiermaschinenbespannung |
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CN1580390A true CN1580390A (zh) | 2005-02-16 |
CN100513684C CN100513684C (zh) | 2009-07-15 |
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CNB2004100574816A Expired - Fee Related CN100513684C (zh) | 2003-08-13 | 2004-08-13 | 纸机织物 |
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US (1) | US7279074B2 (zh) |
EP (1) | EP1507039B1 (zh) |
KR (1) | KR100631377B1 (zh) |
CN (1) | CN100513684C (zh) |
AT (1) | ATE486995T1 (zh) |
CA (1) | CA2477369C (zh) |
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ES (1) | ES2352500T3 (zh) |
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US20040127129A1 (en) | 2002-12-31 | 2004-07-01 | Shuiyuan Luo | Grooved-shape monofilaments and the fabrics made thereof |
DE102006003707A1 (de) * | 2006-01-26 | 2007-08-02 | Voith Patent Gmbh | Transportband |
US20070243360A1 (en) * | 2006-04-14 | 2007-10-18 | Antony Morton | Reinforcement of fabric edges |
DE102006024343A1 (de) * | 2006-05-24 | 2007-11-29 | Voith Patent Gmbh | Transportband für eine Maschine zur Herstellung von Bahnmaterial und Verfahren zur Herstellung eines derartigen Transportbandes |
CA2600307A1 (en) * | 2007-09-07 | 2009-03-07 | Ralph Roemer | Fabric for producing spunmelt or airlaid nonwovens including profiled yarns for soil release and contamination resistance |
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US4376013A (en) * | 1980-03-14 | 1983-03-08 | The Lindsay Wire Weaving Company | Process for removal of pitch-containing water and method of coating belts for paper machine |
EP0094638A3 (de) * | 1982-05-14 | 1986-02-05 | Hermann Wangner GmbH & Co. KG | Spiralband und Verfahren zu dessen Herstellung |
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FR2560242B1 (fr) | 1984-02-29 | 1986-07-04 | Asten Fabriques Feutres Papete | Toile destinee en particulier aux machines a papier, et son procede de preparation |
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DE3638036A1 (de) * | 1986-11-07 | 1988-05-11 | Siteg Siebtech Gmbh | Spiralgliederband mit geteilten spiralen |
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GB9107166D0 (en) | 1991-04-05 | 1991-05-22 | Scapa Group Plc | Papermachine clothing |
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ES2144162T3 (es) | 1996-01-25 | 2000-06-01 | Munzinger Conrad & Cie Ag | Banda de material y procedimiento para su fabricacion. |
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-
2003
- 2003-08-13 EP EP20030018342 patent/EP1507039B1/de not_active Expired - Lifetime
- 2003-08-13 AT AT03018342T patent/ATE486995T1/de active
- 2003-08-13 ES ES03018342T patent/ES2352500T3/es not_active Expired - Lifetime
- 2003-08-13 DE DE50313235T patent/DE50313235D1/de not_active Expired - Lifetime
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2004
- 2004-08-10 CA CA 2477369 patent/CA2477369C/en not_active Expired - Fee Related
- 2004-08-13 KR KR1020040063908A patent/KR100631377B1/ko not_active IP Right Cessation
- 2004-08-13 CN CNB2004100574816A patent/CN100513684C/zh not_active Expired - Fee Related
- 2004-08-13 US US10/917,524 patent/US7279074B2/en not_active Expired - Fee Related
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KR100631377B1 (ko) | 2006-10-04 |
US7279074B2 (en) | 2007-10-09 |
DE50313235D1 (de) | 2010-12-16 |
US20050233661A1 (en) | 2005-10-20 |
CA2477369C (en) | 2008-09-30 |
EP1507039B1 (de) | 2010-11-03 |
KR20050016245A (ko) | 2005-02-21 |
ATE486995T1 (de) | 2010-11-15 |
ES2352500T3 (es) | 2011-02-21 |
CA2477369A1 (en) | 2005-02-13 |
EP1507039A1 (de) | 2005-02-16 |
CN100513684C (zh) | 2009-07-15 |
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