CN1120827A - 增长拉伸无纺纤维网和热塑性膜的挤塑层压制品及其制造方法 - Google Patents
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Abstract
制成增长拉伸无纺纤维网(8)和热塑性膜(3)的挤塑层压制品。纺粘纤维网(22)被增长拉伸形成许多从两网面向外伸出的纤维头(20)以便与挤塑的热塑性膜(3)粘合,并使层压制品有柔软的纤维织物。
Description
将无纺纤维网粘合到热塑性膜上的方法已经知道一段时间了。另外,将热塑性膜挤塑层压到未拉伸的无纺网上的方法在本专业也是大家熟悉的。
有关未拉伸的无纺网挤塑层压的专利包括US2714571、3058863、4522203、4614679、4692368、4753840和5035941。上述专利US3058863和4692368公开了在与未拉伸的无纺纤维网在压合辊辊隙处层压前将挤塑的聚合物膜拉伸。US4522203和5035941涉及将多层聚合物膜与未拉伸的无纺网在压合辊辊隙处共挤塑。US4753840公开了在与聚合物膜挤塑层压以前使无纺聚合物纤维材料预成型,以改善无纺纤维和聚合物膜之间的粘合。更具体地说,US4753840公开了传统的压花技术,在挤塑层压以前在无纺基层形成浸压面和未浸压面,以便通过浸压纤维面来改善无纺纤维网和聚合物膜之间的粘合。US5035941也公开了被挤塑层压到单层聚合物膜上的未拉伸无纺网,由于通常从纤维基材面竖直伸出的纤维易使膜产生针眼,因此该专利公开使用多层共挤塑膜来防止针眼产生。此外,专利US3622422、4379192和4725473公开了将松散的无纺纤维粘合到聚合物膜上的方法。
使用互啮合辊拉伸无纺纤维网以减轻织物单位重量也是已知的,这方面专利的例子是US4153664和4517714。US4153664公开了使用一对互错对插辊增长膜向(CD)或纵向(MD)拉伸无纺纤维网以便增强和柔软无纺网的方法。US4153664还公开了另一供选择的实施方案,其中在互啮合拉伸以前,将无纺纤维网层压到热塑性膜上。
仍有需要在无纺纤维基材和塑料膜之间达到令人满意的粘合强度,同时又能由纤维网提供足够的吸收能力或柔软性。很希望有一种将无纺纤维网高速粘合到热塑性膜上的方法,从而生产一种有柔软吸收层、有足够的粘合强度以及膜上没有针眼的层压制品。为了克服现有工艺技术的一些问题也需要不断改进。
本发明涉及一种拉伸的无纺纤维网和热塑性膜的挤塑层压制品。层压制品有改进的纤维网和挤塑膜之间的粘合强度以及柔软的纤维织物。提供在热塑性膜上没有针眼的层压制品也是本发明的一个目的,该制品在高速生产机器上生产,线速大约为500—1000fpm。
挤塑层压制品其无纺纤维网有通过沿网长和网的整个厚度基本上均匀地拉伸纤维网形成的从两网面向外伸出的许多纤维头。热塑性膜挤塑层压到纤维网的一面,纤维头伸进膜中使网与膜粘合在一起,但又不穿透该膜,而从网的另一面伸出的纤维头给层压制品提供柔软的纤维织物。
在一最优选的实施方案中,本发明的方法涉及流水拉伸和层压。更具体地说,该法包括在与热塑性膜挤塑层压以前先将无纺纤维网增长拉伸。纤维网首先沿网长和网的整个厚度基本上均匀地增长拉伸,以便得到许多从两个网面向外伸出的纤维头。然后,将增长拉伸的纤维网送入辊隙,并在辊隙中将热塑性膜挤塑在网的一面上以便使网与膜粘合。控制在辊隙处的挤压力,使纤维网的一面粘合,纤维头伸入所述的膜而又不穿透膜。保留有伸出的纤维头的另一网面,为层压制品提供柔软的纤维织物。根据以下的详细说明将进一步理解本发明的其他好处、优点和目的。
本发明的主要目的是在高速生产机器上生产热塑性膜和无纺纤维网的层压制品,膜与网的一面有令人满意的粘合强度,而在层压制品的另一面保持柔软有绒毛的感觉。如上所述,在本发明的一个优选形式中,这些目的和其他目的可通过以下方法达到:首先沿网长和网的整个厚度基本上均匀地增长拉伸无纺纤维网,以便得到许多从网中向外伸出的纤维头。业已发现,通过首先增长拉伸纤维网,经挤塑层压得到网与热塑性膜之间具有出人意料的粘合强度。此外还发现,通过挤塑可得到这样的层压复合材料,而在热塑性膜中不形成针眼。因此,该挤塑层压复合材料的特征是由于有热塑性膜而不透液体,同时在层压制品的纤维网面上保持柔软的感觉。因此,该层压复合材料适用于许多应用场合,包括外科手术衣、被单、衣服、卫生产品等。
A.压层制品的材料
热塑性膜优选聚烯烃型,可为任何一类可加工成膜的热塑性聚烯烃聚合物,用于熔体挤塑直接层压到纤维网上。适用的热塑性聚合物可以是可生物降解的或在环境上是可降解的。适用于本发明的许多可生物降解的热塑性聚合物是通常是固体的氧化链烷醇聚合物或二链烷醇聚合物,其代表是聚己内酯或聚己二酸亚乙基酯;多糖或改性多糖,如可成膜的淀粉树脂组合物。适用的在环境中可降解的热塑性聚合物包括可形成不溶于水和不渗水的膜的聚烯烃为基础的聚合物,可在生产许多有用的制品如尿布、衬垫、包装材料、帘布等中用作隔离层。烯烃为基础的聚合物包括最普通的乙烯或丙烯为基础的聚合物,如聚乙烯、聚丙烯,以及共聚物如,乙烯-醋酸乙烯共聚物(EVA)、乙烯-甲基丙烯酸乙酯共聚物(EMA)和乙烯—丙烯酸共聚物(EAA),或者这些聚烯烃的掺混物。可单独聚合或与其他烯属不饱和单体一起聚合的烯烃包括如乙烯、丙烯、1—丁烯、异丁烯、1—戊烯、卤代烯烃(如氯丁二烯)、乙烯基苯类和萘类(如苯乙烯或乙烯基萘)、乙烯基卤化物或次乙烯基卤化物(如氯乙烯和1,1—二氯乙烯)、乙烯基酯类(如醋酸乙烯酯和苯甲酸乙烯酯)、丙烯酸类和甲基丙烯酸类(或者称为聚丙烯酸酯或聚甲基丙烯酸酯)及其酯或酰胺,以及烯烃,如丁二烯、异戊二烯和环戊二烯。适合在本发明的复合材料片中作膜的聚合物的其他例子可参见本发明背景技术中所引的上述专利,这些文献在这里作为参考并入本文。
无纺纤维网可以是聚乙烯、聚丙烯、聚酯、人造丝、纤维素、尼龙等纤维以及这些纤维的掺混物。对于无纺纤维网已提出许多规定。这些纤维通常是短纤维或连续的纤丝。这里所用的“无纺纤维网”是其一般意义上的纤维网,它指普通的平面结构物,它是相对扁平的、柔软的和多孔的,它由短纤维或连续的纤丝组成。有关无纺纤维更详细的说明可参见“Nonwoven Fabric Primer and RefereuceSampler“by E.A.Vaughn,Association of the NonworvenFabrics Industry,3d Edition(1992)。
B.纤维网用拉伸机
许多种不同的拉伸机和技术可用来拉伸最初的无纺纤维网。短纤维的无纺梳理纤维网或无纺纺粘纤维网可用如下描述的拉伸机和技术拉伸:
1.对角互啮合拉伸机
对角互啮合拉伸机由一对在平行轴上的左旋和右旋的螺旋齿轮部件组成。轴安装在机器两侧面板之间,下轴安装在固定轴承上,而上轴安装在可竖直滑动部件的轴承上。可滑动部件可用调节螺钉控制的楔形件在竖直方向上调节。将楔子拧出或拧进将使可滑动部件向下或向上运动,从而进一步啮合或松开上下互啮合辊的齿轮。安装在侧机架上的测距器可表明互啮合辊齿的啮合深度。
压气缸用来使可滑动的部件保持在其较低的啮合位置,牢固地顶着调节楔子,以抗拉伸材料所产生的向上的力。这些压气缸也可缩回,或者同时使用启动时可打开所有机器辊隙的安全线路,使上下互啮合辊彼此松开,以便使材料能穿过互啮合设备。
驱动设备通常用来驱动固定互啮辊。如果为了机器装料或安全欲使互啮合辊是可松开的,那么在上下互啮合辊之间最好使用防止齿游动的齿轮传动装配,以确保在再啮合时一个互啮合辊的齿总是落在另一互啮合的齿之间,从而避免可能造成互啮合齿的齿顶之间可能损坏的物理接触。如果互啮合辊意欲保持恒定的啮合,那么上互啮合辊通常不需要驱动。驱动的互啮合辊通过被拉伸的材料来驱动该辊。
互啮合辊很类似细齿距螺旋齿轮。在优选的实施方案中,辊的直径为5.935″、螺旋线角45°、法线螺距0.100″、径节30、压角141/2°,它基本上是一长齿顶去顶齿轮。这样就产生一狭窄的深齿廓,它提供了一直到约0.090时互啮合,以及为材料厚度在齿的两侧提供了约0.005时间隙。齿的设计使之不传递转动的转矩,在正常的互啮合拉伸操作中,也不使金属与金属接触。
2.横向(CD)互啮合拉伸机
CD互啮合拉伸设备与对角互啮合拉伸机相同,不同点是下面指出的互啮合辊的设计和其他一些次要方面。因为CD互啮合部件能有大的啮合深度,所以CD互啮合拉伸设备装有在互啮合辊的上轴升高或降低时使两根互啮合辊的轴保持平行的设备是重要的。为了确保一个互啮合辊的齿总是落入另一互啮合辊的齿之间,从而避免互啮合齿之间可能损坏的物理接触,上述这一点是必要的。通过齿条和齿轮安装来确保这一平行移动,其中固定齿条与可竖直滑动的部件并列安装在每一侧构架上。轴穿过侧构架并操纵每一可竖直滑动部件的轴承。齿轮在该轴的每一端,并控制与齿条的啮合,以便产生所需要的平行运动。
CD互啮合拉伸机的驱动必须使上下两互啮合辊转动,除非在材料借助高的摩擦系数的互啮合拉伸的情况下。但驱动不需要防止齿隙游动,因为小量的纵向安装误差或驱动滑动都不会产生问题。借助CD互啮合部件的说明,这一点的原因将变得很清楚。
CD互啮合部件由固体材料加工制成,最好可看成是交替重叠的两种不同直径的盘。在优选的实施方案中,互啮合盘的直径为6”、厚度为0.031”,并且在其边缘有完全的圆角。分开互啮合盘的间隔盘的直径为5.5”,厚度为0.069”。这一结构的两个辊可互啮合一直到0.231”,并为所有侧面上的材料留下0.019”间隙。如对角互啮合拉伸机一样,该CD互啮合部件的结构有0.100”齿距。
3.纵向(MD)互啮合拉伸机
MD互啮合拉伸设备与对角互啮合拉伸机相同,不同点是互啮合辊的设计。MD互啮合辊很类似细齿距正齿轮。在优选的实施方案中,辊的直径为5.933”、齿距为0.100”、径节30、压角14.5°,并且它基本上是长齿顶去顶齿轮。在这些辊上取第二通道,齿轮滚削偏移0.010”,以便得到有更大间隙的窄齿。有大约0.090”啮合,这一结构在两侧为材料厚度的有约0.010”的间隙。
4.增长拉伸技术
上面描述的对角、CD或MD互啮合拉伸机可用来生产增长拉伸的无纺纤维网,该无纺纤维网用于生产本发明的层压制品。拉伸操作通常用在短纤维或纺粘纤丝的无纺纤维网上。在本发明的一个特有方面,纺粘纤丝的无纺纤维网可增长拉伸,给层压制品提供很柔软的纤维成品,层压制品是具有很好粘合强度的梳理纤维。这些纤维网例如用CD互啮合拉伸机一次通过拉伸机增长拉伸,辊啮合深度为约0.090至0.120英寸,线速为约500至1000fpm或更快。这样的CD增长或互啮合拉伸的结果得到许多伸出两个网面和贯穿网深度的纤维头,以便得到很好的粘合强度和柔软的纤维织物。
以下实施例说明本发明的挤塑层压复合材料以及制造它们的方法。借助这些实施例以及进一步详细的说明,很显然,对于熟悉本专业的普通技术人员来说,在不违背本发明的范围的情况下可作出许多变化。
根据附图可进一步理解本发明,其中:
图1是用于制造本发明的层压制品的流水互啮合和挤塑层压设备示意图。
图2是沿图1的2—2线切取的剖面视图,以图解形式说明互啮合辊。
图3是拉伸前无纺纤维网的横切面放大示意图。
图4是图3的纤维网增长拉伸后的放大示意图,从两网面产生许多向外伸出的纤维头。
图5是图3的无纺纤维网层压后的放大示意图,说明无纺纤维和塑料膜表面之间粘合差。
图6是图4的无纺纤维网层压后的放大示意图,说明增长拉伸形成的许多伸出的纤维头通过层压到塑料膜表面中产生很好的粘合。
操作实施例1A和对比实施例1B
为了与未拉伸的无纺聚丙烯层压到低密度聚乙烯(LDPE)的挤塑层压制品直接比较,制备了LDPF膜和增长拉伸的聚丙烯无纺纤维网的挤塑层压制品。
A增长拉伸的无纺纤维网和热塑性膜的挤塑层压制品
在与厚度约0.52密耳的LDPE热塑性膜挤塑层压以前,将18克/码2重的梳理的聚丙烯无纺纤维网用如上所述的CD拉伸机增长拉伸。图示于图1,将送入的网12通过CD拉伸机辊10和11,辊啮合的深度约为0.090英寸,线速约500至1000fpm。互啮合辊10和11图示于图2,说明沿网长和网的整个厚度均匀地拉伸。拉伸后,互啮合拉伸后的网的重量为12克/码2。以横切面表示,最初的网12拉伸前图示于图3,而拉伸后的网9示于图4。然后连续地将增长拉伸的网9以生产设备速度约500至1000英尺/分经固定辊13送到橡胶辊5和金属辊4的辊隙中。另一方面,可使用有固定间隙的两个金属辊。在辊隙处金属辊4还可有用于挤塑的塑料膜压花的压花模,同时在与橡胶辊5的辊隙处使挤塑的塑料膜层压到拉伸的网9上。来自挤塑机1的LDPE膜通过模头2被挤塑到辊隙中,同时送入增长拉伸的网9。通常,以500英尺/分以上的速度将厚度约为0.25至8密耳的聚乙烯膜3在大约500至625°F熔体温度下层压,形成层压制品8,并在辊7处取出。将辊隙处的挤压力控制到这样的程度,使网的一个侧面粘合到聚烯烃膜上,而膜不产生针眼,同时使层压制品8的纤维面保持纤维状感觉。对于约5至70克/码2的纤维网来说,大约10至80磅/英寸2的压力足以达到令人满意的粘合。在这一实施例中,网12被拉伸得到约12克/码2重的拉伸网9,将它粘合到聚乙烯膜3上,得到有很好粘合强度的层压制品〔用剥离力(克/英寸)测量〕。用Instron Tensile Tester测量剥离力,以克表示的剥离层压制品所需的力。本发明的层压制品8表现出“绝对粘合”,它意味着在不损坏层压制品的条件下不能从膜3上剥离网9。此外,用IIandle-O-Meler测量层压制品的柔软性,横向测量,以克表示。该仪器测量网的纤维侧的柔软性或手感约为2.2克,这说明它是很柔软的。该层压制品也没有针眼。
1B对比实施例
将图3所示的18克/码2的未拉伸的梳理聚丙烯无纺纤维网12以上述实施例1A描述的方法挤塑层压到LDPE热塑性膜上,不同的是无纺纤维网未拉伸。
根据上述的操作实施例1A,对比实施例1B和图3—6,可得出以下几个结论。首先,与预计的相反,层压制品8的拉伸网9和膜3之间的粘合强度没有降低,它显著超过图5中未拉伸的无纺层压制品19的粘合强度。图5的未拉伸的无纺纤维层压制品19的粘合强度为60克/英寸;而如上述拉伸的无纺纤维层压制品(图6)达到“绝对粘合”的粘合强度。参见图3—4,观察拉伸前后无纺网面证明,增长拉伸在网9中产生许多从无纺网两面向外伸出的纤维头20。(参见图3和4图)。
通过增长拉伸形成的许多伸出的纤维头20是挤塑层压后在没有针眼的条件下有很好的粘合强度的原因,如用绝对粘合强度说明的那样。图5和6图示说明拉伸的层压制品8和未拉伸的层压制品19的情况,以便说明粘合强度增加可归因于许多伸出的纤维头进入到复合材料的的挤塑膜中,如21处所示。当从热塑性膜表面仔细剥离无纺纤维网后观察实际的样品时,已发现,与未拉伸的无纺网12相比,使用拉伸的无纺网9时,有许多纤维(或许几平方英寸有数百根)实际上嵌入膜的21处。使用未拉伸的无纺网12,仅有少量纤维22伸入层压制品19的膜面中。同样,这一点通过比较图5和6来图示说明。
实施例2~9
为了进一步说明本发明的原理,进行了一系列实施例。在这一系列实施例中,纺粘的聚丙烯无纺网用类似实施例1中描述的方法进行拉伸和层压。还以相同的方式进行对比实施例,不同的是无纺网未拉伸。在这些实施例中,织物单位重量为14克/码2的纺粘聚丙烯无纺网用上述的设备进行CD拉伸,参见图1,使用CD辊的啮合深度为0.115英寸,线速为250英尺/分。得到的拉伸无纺网是很膨松的,相同的特征是从网面向外伸出纤维头用于层压膜的粘合。通过拉伸的无纺网与LDPE膜以大约260英尺/分挤塑层压,膜厚为0.5和0.25密耳,得到的层压制品有上述相同的基本特征,有相当大的或绝对粘合强度。LDPE膜有传统的3.5英寸挤塑机挤塑,机筒调定在420-570°F之间,模头调定在470-530°F之间,在这里熔融温度大约540°F,对于0.5和0.25密耳的膜,螺杆转速分别为50和25转/分。相同的步骤用于织物单位重量为12克/码2的其它无纺网。12和14克/码2的未拉伸网的对比实施例也进行挤塑层压。用拉伸和未拉伸网挤塑层压的结果列于下表:
实施例2~9实施例 层压制品 拉伸网 重量减少率 剥离*粘合强度 柔软性** 针眼***
膜 无纺网 (%) (克/吋) (克) (孔个/88吋2)
(密耳) (克/码2)2 0.50 14 0 40 4.5 03 0.25 14 0 15 4.0 04 0.50 9.2 34.3 绝对粘合 3.0 05 0.25 9.2 34.3 30 2.5 06 0.50 12 0 30 4.0 07 0.25 12 0 10 3.0 08 0.50 8 33.3 绝对粘合 2.0 09 0.25 8 33.3 25 2.0 0*用lnstron Tensile Tester测量剥离力,以剥离层压制品所需的克力表示。**用Handle-O-Meter测量柔软度,用克表示。该仪器测量各种片材的柔软性或手感。测量的力越低意味着膜越柔软。***在膜一侧放上醇溶液(红色),并检测另一侧的红色斑点,以此来评价针眼情况。
参见该表,实施例4说明,对于0.50密耳厚度的膜,本发明的流水拉伸和挤塑层压法得到9.2克/码2的拉伸网,重量减少34.3%。通过挤塑层压,在层压制品中网和挤塑膜之间达到绝对粘合。作为比较,实施例2的未拉伸膜的粘合强度为40克/英寸,它证明用本发明的方法可达到更优异的粘合强度。此外,用未拉伸的网,实施例2层压制品的柔软性数值为4.5克。可是,对于本发明实施例4层压制品,柔软性数值达到3.0克,柔软性显著的改善归因于从层压制品拉伸的纤维侧面向外伸出的纤维。
通过实施例3和5的比较,用0.25密耳厚的膜进一步说明了本发明层压制品粘合强度和柔软性的改进。在本发明实施例5的情况下,无纺网被拉伸,重量减少34.3%,从14克/码2减到9.2克/码2,通过挤塑层压,粘合强度达到30克/英寸。作为比较,对于实施例3的未拉伸网的层压制品,粘合强度达到15克/英寸。与未拉伸的层压制品相比,对于增长拉伸网的层压制品,粘合强度的这一改进(粘合强度从15加倍到30)的确是会人吃惊的,特别是因为人们预计拉伸纤维网层压制品的粘合强度会低于未拉伸网的层压制品的粘合强度。还有,与拉伸的层压制品的柔软性为4相比,本发明实施例5未拉伸的层压制品的柔软性为2.5,说明本发明的层压制品的柔软性显著改进。
参见实施例6—9,结果类似于实施例2—5得到的结果。换句话说,在膜厚为0.25和0.5密耳中,无纺网的最初纺物单位重量为12克/码2,对于增长拉伸的无纺网来说,在这两种情况下重量都减少33.3%。在0.5密耳膜的情况下,本发明实施例8再次达到绝对粘合。在0.25密耳膜的情况下,与实施例7未拉伸网的粘合强度为10相比,本发明实施例9的层压制品,粘合强度值为25。通过表中所列的实施例6—9数值的比较,同样说明柔软性显著进,与实施例2—5相似。
除了上述优点外,正如表中说明的那样,尽管在挤塑层压以前在几平方英寸上有成百上千的从拉伸的无纺网的网面向外伸出的纤维,但在本发明的挤塑膜中不形成针眼。所以,熟悉本专业的普通技术人员很容易理解,通过本发明流水增长拉伸和挤塑层压过程可得到许多重大的优点。正如上面说明的那样,与用未拉伸的无纺层压制品相比,可得到有很好粘合强度和柔软性的挤塑层压制品。其他聚烯烃、聚酯和其他聚合物纤维用这一方法可粘合到其他热塑性膜上。上述这些实施例旨在说明本发明的原理、好处和优点,可以理解其他的材料也可得到相同的或类似的结果。
鉴于上面详细的说明,如熟悉本专业的普通技术人员所理解的那样,应当理解,用本发明的原理,视不同的材料和条件,可对本发明方法作出变化。
Claims (16)
1.无纺纤维网和热塑性膜的挤塑层压制品,它含有:有许多从两个网面向外伸出的纤维头的无纺纤维网,纤维网通过沿网长和网的整个厚度基本上均匀地增长拉伸形成;以及挤塑层压到所述网的一面上的热塑性膜,所述的纤维头伸入所述膜中,使所述的网与所述的膜粘合,而纤维头又不穿透所述的膜,所述网的另一面有许多向外伸出的纤维头,为层压制品提供柔软的纤维织物。
2.根据权利要求1的层压制品,其中所述的纤维网含聚烯烃纤维。
3.根据权利要求1的层压制品,其中所述的热塑性膜是聚烯烃膜。
4.根据权利要求1的层压制品,其中所述的纤维选自聚丙烯、聚乙烯、聚酯、纤维素、人造丝、尼龙和两种或多种这样的纤维的掺混物。
5.根据权利要求1的层压制品,其中热塑性膜选自聚乙烯、聚丙烯及其共聚物。
6.根据权利要求1的层压制品,其中所述的网和膜都由可生物降解的聚合物制成。
7.根据权利要求6的层压制品,其中可生物降解的聚合物选自聚乙烯醇、聚己内酯、淀粉聚合物及其掺混物。
8.根据权利要求1的层压制品,其中纤维网的重量为约5至70克/码2,而热塑性膜的厚度为约0.25至约8密耳。
9.根据权利要求1的层压制品,其中所述的网由短纤维或纺粘纤维制成。
10.一种将无纺纤维网流水拉伸和挤塑层压到热塑性膜上的方法,该法包括
提供无纺纤维网,
沿着网长和网的整个厚度基本上均匀地增长拉伸所述的纤维网,以便形成许多从两网面向外伸出的纤维头,
将所述的增长拉伸的网送入辊的辊隙,以便与热塑性膜挤塑层压,
将热塑性挤塑物在其软化点以上的温度下送入所述的辊隙挤塑成膜,
控制在辊隙处所述纤维网和挤塑物之间的挤压力,使网的一面粘合,所述的纤维头伸入到所述的膜中而又不穿透膜,同时在纤维网的另一面保留所述伸出的纤维头,以便给层压制品提供柔软的纤维织物。
11.根据权利要求10的方法,其中所述的纤维网含聚烯烃纤维。
12.根据权利要求11的方法,其中所述的热塑性膜是聚烯烃膜。
13.根据权利要求10的层压制品,其中所述的纤维选自聚丙烯、聚乙烯、聚酯、纤维素、人造丝、尼龙以及两种或多种这样的纤维的掺混物。
14.根据权利要求10的方法,其中所述热塑性膜选自聚乙烯、聚丙烯及其共聚物。
15.根据权利要求10的方法,其中纤维网的重量为约5至70克/码2,而热塑性膜的厚度为约0.25至约8密耳,并在约500至约1000英尺/分下进行流水拉伸和挤塑层压。
16.根据权利要求15的层压制品,其中所述的网由短纤维或纺粘纤维制成。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08032355 US5382461B1 (en) | 1993-03-12 | 1993-03-12 | Extrusion laminate of incrementally stretched nonwoven fibrous web and thermoplastic film and method |
US08/032,355 | 1993-03-12 |
Publications (2)
Publication Number | Publication Date |
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CN1120827A true CN1120827A (zh) | 1996-04-17 |
CN1039682C CN1039682C (zh) | 1998-09-09 |
Family
ID=21864509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN94191756A Expired - Lifetime CN1039682C (zh) | 1993-03-12 | 1994-03-09 | 增长拉伸无纺纤维网和热塑性塑料膜的挤塑层压制品及其制造方法 |
Country Status (22)
Country | Link |
---|---|
US (1) | US5382461B1 (zh) |
EP (1) | EP0688263B1 (zh) |
JP (1) | JP2625263B2 (zh) |
KR (2) | KR960700889A (zh) |
CN (1) | CN1039682C (zh) |
AT (1) | ATE168628T1 (zh) |
AU (1) | AU670870B2 (zh) |
BR (1) | BR9406175A (zh) |
CA (1) | CA2156888C (zh) |
CZ (1) | CZ286127B6 (zh) |
DE (1) | DE69411895T2 (zh) |
DK (1) | DK0688263T3 (zh) |
ES (1) | ES2120030T3 (zh) |
GR (1) | GR3027683T3 (zh) |
HU (1) | HU218554B (zh) |
IE (1) | IE940206A1 (zh) |
NO (1) | NO302106B1 (zh) |
NZ (1) | NZ263664A (zh) |
PL (1) | PL180805B1 (zh) |
RU (1) | RU2117580C1 (zh) |
TW (1) | TW302330B (zh) |
WO (1) | WO1994020298A1 (zh) |
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CN101607457A (zh) * | 2008-06-20 | 2009-12-23 | 蒋建明 | 一种纤维网格塑料板及其制备方法 |
CN109476112A (zh) * | 2016-07-15 | 2019-03-15 | 埃普利克斯公司 | 层叠组件及其制造方法 |
CN110481083A (zh) * | 2019-08-22 | 2019-11-22 | 南安市信隆智能家居有限公司 | 一种采用错位平梳原理的纺织纤维压制成型机 |
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1994
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- 1994-03-09 PL PL94310625A patent/PL180805B1/pl unknown
- 1994-03-09 NZ NZ263664A patent/NZ263664A/en unknown
- 1994-03-09 CZ CZ19952230A patent/CZ286127B6/cs unknown
- 1994-03-09 AT AT94912193T patent/ATE168628T1/de not_active IP Right Cessation
- 1994-03-09 JP JP6520263A patent/JP2625263B2/ja not_active Expired - Fee Related
- 1994-03-09 CN CN94191756A patent/CN1039682C/zh not_active Expired - Lifetime
- 1994-03-09 ES ES94912193T patent/ES2120030T3/es not_active Expired - Lifetime
- 1994-03-09 CA CA002156888A patent/CA2156888C/en not_active Expired - Fee Related
- 1994-03-09 WO PCT/US1994/002491 patent/WO1994020298A1/en active IP Right Grant
- 1994-03-09 RU RU95118172A patent/RU2117580C1/ru active
- 1994-03-09 DE DE69411895T patent/DE69411895T2/de not_active Expired - Lifetime
- 1994-03-09 KR KR1019950703929A patent/KR960700889A/ko not_active IP Right Cessation
- 1994-03-09 HU HU9502558A patent/HU218554B/hu unknown
- 1994-03-09 BR BR9406175A patent/BR9406175A/pt not_active IP Right Cessation
- 1994-03-09 DK DK94912193T patent/DK0688263T3/da active
- 1994-03-09 AU AU64442/94A patent/AU670870B2/en not_active Expired
- 1994-03-09 EP EP94912193A patent/EP0688263B1/en not_active Expired - Lifetime
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1995
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1998
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101607457A (zh) * | 2008-06-20 | 2009-12-23 | 蒋建明 | 一种纤维网格塑料板及其制备方法 |
CN109476112A (zh) * | 2016-07-15 | 2019-03-15 | 埃普利克斯公司 | 层叠组件及其制造方法 |
CN110481083A (zh) * | 2019-08-22 | 2019-11-22 | 南安市信隆智能家居有限公司 | 一种采用错位平梳原理的纺织纤维压制成型机 |
CN110481083B (zh) * | 2019-08-22 | 2021-04-13 | 海宁市越达经编有限公司 | 一种采用错位平梳原理的纺织纤维压制成型机 |
Also Published As
Publication number | Publication date |
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HUT73719A (en) | 1996-09-30 |
KR960700889A (ko) | 1996-02-24 |
PL180805B1 (pl) | 2001-04-30 |
NO953424L (no) | 1995-08-31 |
NO302106B1 (no) | 1998-01-26 |
BR9406175A (pt) | 1996-02-06 |
DK0688263T3 (da) | 1998-11-02 |
CZ286127B6 (cs) | 2000-01-12 |
GR3027683T3 (en) | 1998-11-30 |
CN1039682C (zh) | 1998-09-09 |
IE940206A1 (en) | 1994-09-21 |
ES2120030T3 (es) | 1998-10-16 |
DE69411895D1 (de) | 1998-08-27 |
TW302330B (zh) | 1997-04-11 |
US5382461A (en) | 1995-01-17 |
AU670870B2 (en) | 1996-08-01 |
US5382461B1 (en) | 1998-11-03 |
HU218554B (hu) | 2000-10-28 |
NO953424D0 (no) | 1995-08-31 |
ATE168628T1 (de) | 1998-08-15 |
EP0688263A1 (en) | 1995-12-27 |
CA2156888C (en) | 2000-07-18 |
CA2156888A1 (en) | 1994-09-15 |
AU6444294A (en) | 1994-09-26 |
DE69411895T2 (de) | 1998-12-10 |
CZ223095A3 (cs) | 1999-10-13 |
WO1994020298A1 (en) | 1994-09-15 |
NZ263664A (en) | 1996-11-26 |
JPH08503180A (ja) | 1996-04-09 |
EP0688263B1 (en) | 1998-07-22 |
RU2117580C1 (ru) | 1998-08-20 |
KR0150767B1 (en) | 1998-10-01 |
JP2625263B2 (ja) | 1997-07-02 |
PL310625A1 (en) | 1995-12-27 |
HU9502558D0 (en) | 1995-10-30 |
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