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    • 6. 发明申请
    • Multicomponent Structures Having Improved Adhesion Between Components
    • 具有改善组分之间粘附性的多组分结构
    • US20080274245A1
    • 2008-11-06
    • US11547486
    • 2005-04-05
    • Eric K.C. LeeJohn A. NaumovitzMladen Ladika
    • Eric K.C. LeeJohn A. NaumovitzMladen Ladika
    • B29C65/14B32B27/36B32B27/30B29C47/08B65D81/34B32B7/10B32B1/08
    • B32B7/12B32B27/08B32B27/30B32B27/304B32B2310/0837B32B2439/00C08J5/12Y10T428/1307Y10T428/1321Y10T428/1352Y10T428/1362Y10T428/31616Y10T428/31667Y10T428/31681Y10T428/31797
    • The present invention includes a multicomponent structure comprising at least two components having a tie layer or adhesive layer directly between them, the tie layer comprising at least one olefin unsaturated ester copolymer and at least one photoinitiator and optionally a crosslinking enhancer. The tie layer is preferably irradiated with sufficient actinic radiation to result in increased interlayer adhesion strength between the two components as compared with the interlayer adhesion strength before treatment with the actinic radiation or between the components having a tie layer of the same composition except without the added photoinitiator or crosslinking enhancer. Without the photoinitiator, optionally crosslinking enhancer, and radiation the interlayer adhesion of the components is preferably less than 55 N/m. At least one of the components (first component or layer) preferably comprises a halopolymer, more preferably vinylidene chloride polymer, most preferably at least a majority of a vinyl idene chloride polymer. In another embodiment, at least one component exhibits interlayer adhesion strength similar to vinylidene chloride polymers. The structure optionally is or comprises such structures as a multilayer film, bag, or package, a lined or composite pipe, or other structure having more than one component. The tie layer is advantageously irradiated with an amount of UV light effective to increase the adhesion strength between the first and second components.
    • 本发明包括多组分结构,其包含至少两个在其间直接连接层或粘合剂层的组分,所述粘结层包含至少一种烯烃不饱和酯共聚物和至少一种光引发剂和任选的交联增强剂。 与使用光化辐射处理之前的层间粘合强度或具有相同组成的粘结层的组分之间相比,接合层优选用足够的光化辐射照射以导致两组分之间的层间粘合强度增加,除了不添加 光引发剂或交联增强剂。 没有光引发剂,任选的交联增强剂和辐射,组分的层间粘附优选小于55N / m。 组分(第一组分或第一组分)中的至少一种优选包含卤代聚合物,更优选偏二氯乙烯聚合物,最优选氯乙烯基氯化聚合物的至少大部分。 在另一个实施方案中,至少一种组分显示类似于偏二氯乙烯聚合物的层间粘合强度。 该结构任选地或包括诸如多层膜,袋或包装,衬里或复合管或具有多于一种组分的其它结构的结构。 接合层有利地用一定量的UV光照射,以有效地增加第一和第二组分之间的粘合强度。
    • 10. 发明授权
    • Method for preparing multilayer films
    • 多层膜制备方法
    • US06685872B2
    • 2004-02-03
    • US09899614
    • 2001-07-03
    • Joseph DooleySteve R. JenkinsJohn A. Naumovitz
    • Joseph DooleySteve R. JenkinsJohn A. Naumovitz
    • B29C4706
    • B29C47/28B29C47/0023B29C47/0026B29C47/06B29C47/062B29C47/065B29C47/20B29C47/26B29C47/261B29C47/38B29C47/56B29C47/70B32B1/08B32B27/08B32B37/153Y10T137/87571Y10T428/1352Y10T428/1379Y10T428/1383Y10T428/1393Y10T428/3175Y10T428/3192
    • A method for coextruding a multilayer tubular film having a barrier material comprises (a) extruding a core extrudate of barrier material with a core extruder; (b) providing a preencapsulation die adjacent the outlet of the core extruder, the prencapsulation die capable of producing a non-uniform layer thickness; (c) extruding a preencapsular extrudate of preencapsular material and directing said preencapsular extrudate to the preencapsulation die; (d) joining the core extrudate and the preencapsular extrudate in the preencapsulation die in a coaxial relationship wherein the preencapsular extrudate is disposed radially outwardly of the core extrudate to form a preencapsulated core extrudate having a non-uniform layer thickness; (e) extruding an inner layer extrudate and an outer layer extrudate; (f) feeding the preencapsulated ore extrudate through a distribution manifold to a coextrusion die, the distribution manifold designed to overlap opposing longitudinally extending edges; and (g) forming a multilayer blown film having the inner layer extrudate disposed radially inwardly of the preencapsulated core extrudate and the outer layer extrudate disposed radially outwardly of the preencapsulated core extrudate. In preferred embodiments the inner layer extrudate and the outer layer extrudate are joined to the preencapsulated core extrudate before, or alternatively while, the preencapsulated core extrudate is fed through the coextrusion die.
    • 用于共挤出具有阻隔材料的多层管状膜的方法包括(a)用芯挤出机挤出阻挡材料的芯挤出物; (b)提供邻近核心挤出机的出口的预包装模具,所述预包装模具能够产生不均匀的层厚度; (c)挤出预胶囊材料的预胶囊挤出物并将所述预胶囊挤出物引导到预包封模具; (d)以同轴关系将预包封模具中的核心挤出物和预胶囊挤出物连接在一起,其中预胶囊挤出物径向向外设置在芯挤出物上以形成具有不均匀层厚度的预包封的芯挤出物; (e)挤出内层挤出物和外层挤出物; (f)将预包装的矿石挤出物通过分配歧管进料到共挤出模头,该分配歧管设计成与相对的纵向延伸的边缘重叠; 和(g)形成具有内层挤出物的多层吹塑薄膜,所述内层挤出物设置在预包封的芯挤出物的径向内侧,而外层挤出物位于预包封的芯挤出物的径向外侧。 在优选的实施方案中,将内层挤出物和外层挤出物在预包封的芯挤出物通过共挤出模头进料之前或备选地与先前封装的芯挤出物相连。