Modular disk coextrusion die
    5.
    发明授权
    Modular disk coextrusion die 失效
    模块盘共挤出模

    公开(公告)号:US5762971A

    公开(公告)日:1998-06-09

    申请号:US735126

    申请日:1996-10-22

    申请人: Henry G. Schirmer

    发明人: Henry G. Schirmer

    IPC分类号: B29C47/06 B29C47/28 B29C47/20

    摘要: A coextrusion die includes a plurality of thin annular disks stacked on top of each other. Each annular disk includes a plurality of openings aligned with openings in the adjacent disk, thus forming multiple streams. Plastic melt may be supplied to the die coplanarly. Stacks of annular disks may be used to form modules through which plastic melt can be axially directed.

    摘要翻译: 共挤出模具包括堆叠在彼此顶部的多个薄环形盘。 每个环形盘包括与相邻盘中的开口对准的多个开口,从而形成多个流。 塑料熔体可以共模提供给模具。 可以使用环形盘的堆叠来形成模块,塑料熔体可以通过该模块被轴向引导。

    Double bubble process for making strong, thin film
    6.
    发明授权
    Double bubble process for making strong, thin film 失效
    双层气泡制作强力薄膜

    公开(公告)号:US5674608A

    公开(公告)日:1997-10-07

    申请号:US409281

    申请日:1995-03-23

    申请人: Henry G. Schirmer

    发明人: Henry G. Schirmer

    摘要: Polymeric, thin oriented films can be made by use of a combination of a hot blown process and a blown bubble process, i.e. a double bubble process. The resulting film has use in replacing PVC for in store stretch wrap applications. Very low density polyethylene, VLDPE, is an especially preferred material for this process. It may be used as a monolayer, or as one layer of a multilayer structure. In practicing the invention, the polymer is extruded and hot blown, and heated to a temperature above its orientation temperature. This heating can be accomplished by the use of a heated liquid reservoir or sock disposed at the lower end of the primary bubble, inside the bubble. The hot blown heated film is then passed through a first set of pinch rolls, re-inflated into a blown bubble, and collapsed at a second set of pinch rolls. Thin, tough and elastic packaging materials are obtained by this process.

    摘要翻译: 聚合物薄取向膜可以通过使用热吹制法和吹塑法,即双泡法的组合来制备。 所得到的胶片用于替代PVC用于商店拉伸包装应用。 极低密度聚乙烯VLDPE是该方法的特别优选的材料。 它可以用作单层,或作为一层多层结构。 在实施本发明时,将聚合物挤出并热吹,并加热到高于其取向温度的温度。 这种加热可以通过使用设置在气泡内部的初级气泡的下端处的加热的液体储存器或袜子来实现。 然后将热吹的加热膜通过第一组夹送辊,再充气成吹塑气泡,并在第二组夹送辊处折叠。 通过这个过程可以获得薄而坚固和弹性的包装材料。

    Method of making very high barrier film
    8.
    发明授权
    Method of making very high barrier film 失效
    制造极高阻隔膜的方法

    公开(公告)号:US5035851A

    公开(公告)日:1991-07-30

    申请号:US644467

    申请日:1991-01-18

    申请人: Henry G. Schirmer

    发明人: Henry G. Schirmer

    IPC分类号: B32B27/16

    摘要: A method of producing an oxygen barrier film, and the resulting film, includes the coextrusion of a multi-layer extrudate having an outside ethylene vinyl alcohol copolymer layer which has been passed through a hot water system to soften and wet the ethylene vinyl alcohol copolymer. The wetted film can be more easily oriented to produce a shrinkable film.

    摘要翻译: 一种氧阻隔膜的制造方法以及所得到的膜包括具有外部乙烯乙烯醇共聚物层的多层挤出物的共挤出,所述多层挤出物已经通过热水系统以软化和湿润乙烯乙烯醇共聚物。 润湿膜可以更容易地取向以产生可收缩膜。

    Bone puncture resistant bag
    9.
    发明授权
    Bone puncture resistant bag 失效
    骨耐穿袋

    公开(公告)号:US5020922A

    公开(公告)日:1991-06-04

    申请号:US316588

    申请日:1986-03-06

    申请人: Henry G. Schirmer

    发明人: Henry G. Schirmer

    IPC分类号: B31B23/00 B65D30/08

    摘要: A seamless, bone puncture resistant bag is provided that representatively includes a length of lay-flat seamless tubular film folded to a double lay-flat configuration and having all adjacent film surfaces interfacially bonded, respectively, except at one outermost interface. The configuration thus forms a seamless envelope with one face thickened integrally to triple thickness. In a less preferred mode, a similarly reinforced bag is provided but which has either an end-seal or side-seals. Associated methods for making such bags are also provided.

    摘要翻译: 提供了一种无缝的,抗骨穿刺的袋子,其代表性地包括折叠成双层平坦构造的平层无缝管状膜的长度,并且除了在一个最外界面处分别具有相互粘合的所有相邻膜表面。 因此,该构造形成无缝包络,其中一个面一体地增厚至三重厚度。 在较不优选的模式中,提供类似增强的袋,但是其具有端密封或侧密封。 还提供了制造这种袋子的相关方法。