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    Non-fibrous high modulus ultra high molecular weight polyethylene tape for ballistic applications
    23.
    发明授权
    Non-fibrous high modulus ultra high molecular weight polyethylene tape for ballistic applications 有权
    用于弹道应用的非纤维高模量超高分子量聚乙烯胶带

    公开(公告)号：US08211342B2

    公开(公告)日：2012-07-03

    申请号：US13135535

    申请日：2011-07-08

    申请人： Gene C. Weedon ,  Kenneth C. Harding ,  Lisa Owen

    发明人： Gene C. Weedon ,  Kenneth C. Harding ,  Lisa Owen

    IPC分类号： B29C43/26

    CPC分类号： B29C67/04 ,  B29C43/22 ,  B29C43/228 ,  B29C55/06 ,  B29C55/065 ,  B29C55/18 ,  B29C2043/483 ,  B29K2023/0683 ,  B29K2223/0683 ,  Y10T428/24074 ,  Y10T428/24479 ,  Y10T428/2495 ,  Y10T428/2913 ,  Y10T442/2623

    摘要： A process for the production of a non-fibrous ultra high molecular weight polyethylene tape having a width of 1-inch or greater and a modulus of 1,400 grams per denier or greater. The non-fibrous UHMWPE tape is obtained by compression molding ultrahigh molecular weight polyethylene powder at a temperature below its melting point and then drawing and stretching the entire resultant compression molded UHMWPE sheet, with no slitting or splitting of the sheet, at a draw ratio of at least 100:1. The UHMWPE tape can be produced in weights of 6,000 to 90,000 denier or greater. The UHMWPE tape of the present invention minimizes the effect of stress concentrators that are prevalent with fibers and thereby enables the tape to be drawn at much higher draw ratios than is possible with fibrous UHMWPE. When used in ballistics panels, the high modulus high molecular weight polyethylene tape of the present invention improves ballistic performance by providing enhanced dissipation of the impact energy of a projectile.

    摘要翻译： 一种制造宽度为1英寸或更大并且模量为1400克/旦尼尔或更高的非纤维超高分子量聚乙烯带的方法。 非纤维UHMWPE胶带是通过在低于其熔点的温度下压制成型超高分子量聚乙烯粉末，然后拉伸和拉伸整个所得的压缩模塑UHMWPE片材，而不是片材的分切或分裂，拉伸比为 至少100：1。 UHMWPE胶带可以以6,000至90,000旦尼尔或更大的重量生产。 本发明的UHMWPE带最小化了与纤维普遍存在的应力集中器的影响，从而使带能够以比纤维状UHMWPE可能高得多的拉伸比拉伸。 当用于弹道学面板时，本发明的高模量高分子量聚乙烯胶带通过提供抛射体的冲击能量的增强的消散来改善了弹道性能。

    Method and apparatus for the production of high tenacity polyolefin sheet
    24.
    发明授权
    Method and apparatus for the production of high tenacity polyolefin sheet 有权
    用于生产高强度聚烯烃片材的方法和设备

    公开(公告)号：US08137601B2

    公开(公告)日：2012-03-20

    申请号：US12928603

    申请日：2010-12-15

    申请人： Kenneth C. Harding ,  Gene C. Weedon

    发明人： Kenneth C. Harding ,  Gene C. Weedon

    IPC分类号： B29C43/26

    CPC分类号： B29C43/22 ,  B29C43/24 ,  B29C55/065 ,  B29C67/04 ,  B29K2023/0683 ,  B29K2223/0683

    摘要： A process for the production of virtually full density polyolefin suitable for further processing by drawing to form a high tenacity, highly oriented polyolefin sheet comprising: a) feeding a metered amount of polyolefin powder into the nip between two heated calender rolls; b) rolling the powder through the nip under these conditions until a coherent sheet of polyolefin is produced. According to a highly preferred embodiment, initially, the nip is set at a gap smaller than the size of the smallest polyolefin powder particle and at a temperature above the melting point of the powder and once a coherent sheet of polyolefin exits the nip the temperature in the nip is lowered to a temperature below the melting point of the polyolefin powder and the gap increased to a desired level above the thickness of the largest powder particle.

    摘要翻译： 一种用于生产几乎全密度聚烯烃的方法，适用于进一步加工，通过拉伸以形成高强度，高度取向的聚烯烃片材，其包括：a）将计量的聚烯烃粉末进料到两个加热的压延辊之间的辊隙中; b）在这些条件下滚动粉末通过辊隙，直到产生粘结的聚烯烃片。 根据高度优选的实施方案，最初，辊隙被设定在比最小聚烯烃粉末颗粒的尺寸小的间隙处，并且在高于粉末的熔点的温度下，并且一旦聚烯烃的粘性片离开辊隙， 将辊隙降低到低于聚烯烃粉末的熔点的温度，并且间隙增加到高于最大粉末颗粒的厚度的所需水平。

    Multiple calender process for forming non-fibrous high modulus ultra high molecular weight polyethylene tape
    26.
    发明授权
    Multiple calender process for forming non-fibrous high modulus ultra high molecular weight polyethylene tape 有权
    用于形成非纤维高模量超高分子量聚乙烯胶带的多重压延工艺

    公开(公告)号：US07740779B2

    公开(公告)日：2010-06-22

    申请号：US11880520

    申请日：2007-07-23

    申请人： Kenneth C. Harding ,  Gene C. Weedon

    发明人： Kenneth C. Harding ,  Gene C. Weedon

    IPC分类号： B29C43/26

    CPC分类号： B29C55/06 ,  B29C43/003 ,  B29C43/006 ,  B29C43/228 ,  B29C55/065 ,  B29C55/18 ,  B29C67/04 ,  B29K2023/0683 ,  B29K2223/0683

    摘要： A multi-calender process for forming a high modulus, high strength component for use in ballistic-resistant articles. The process includes forming ultrahigh molecular weight polyethylene powder into a uniform sheet at a low pressure. Multiple calender units mold and draw the uniform sheet into a non-fibrous, monolithic, ultra high molecular weight polyethylene tape. The multi-calender process and subsequent draw stages stretch the non-fibrous UHMWPE tape to a total draw of at least 100 to 1 to produce a high modulus, high strength UHMWPE component with a modulus of 1,400 grams per denier or greater. The multi-calender process of the present invention enables production of a high-strength, high-modulus UHMWPE component for ballistic-resistant articles and other applications at significantly higher rates and at a lower unit cost.

    摘要翻译： 用于形成用于防弹制品的高模量，高强度组分的多压延方法。 该方法包括在低压下将超高分子量聚乙烯粉末形成均匀的片材。 多个压光机单元模制并将均匀的薄片拉制成非纤维状，整体式，超高分子量的聚乙烯胶带。 多压延工艺和随后的拉伸阶段将非纤维UHMWPE带拉伸至至少100-1的总拉伸，以产生模量为1400克/旦尼尔或更高的高模量，高强度UHMWPE组分。 本发明的多压延方法能够以显着更高的速率和更低的单位成本生产用于防弹制品的高强度，高模量UHMWPE组分和其它应用。

    Multiple calender process for forming non-fibrous high modulus ultra high molecular weight polyethylene tape
    27.
    发明申请
    Multiple calender process for forming non-fibrous high modulus ultra high molecular weight polyethylene tape 有权
    用于形成非纤维高模量超高分子量聚乙烯胶带的多重压延工艺

    公开(公告)号：US20080251960A1

    公开(公告)日：2008-10-16

    申请号：US11880520

    申请日：2007-07-23

    申请人： Kenneth C. Harding ,  Gene C. Weedon

    发明人： Kenneth C. Harding ,  Gene C. Weedon

    IPC分类号： B29C55/18

    CPC分类号： B29C55/06 ,  B29C43/003 ,  B29C43/006 ,  B29C43/228 ,  B29C55/065 ,  B29C55/18 ,  B29C67/04 ,  B29K2023/0683 ,  B29K2223/0683

    摘要： A multi-calender process for forming a high modulus, high strength component for use in ballistic-resistant articles. The process includes forming ultrahigh molecular weight polyethylene powder into a uniform sheet at a low pressure. Multiple calender units mold and draw the uniform sheet into a non-fibrous, monolithic, ultra high molecular weight polyethylene tape. The multi-calender process and subsequent draw stages stretch the non-fibrous UHMWPE tape to a total draw of at least 100 to 1 to produce a high modulus, high strength UHMWPE component with a modulus of 1,400 grams per denier or greater. The multi-calender process of the present invention enables production of a high-strength, high-modulus UHMWPE component for ballistic-resistant articles and other applications at significantly higher rates and at a lower unit cost.

    摘要翻译： 用于形成用于防弹制品的高模量，高强度组分的多压延方法。 该方法包括在低压下将超高分子量聚乙烯粉末形成均匀的片材。 多个压光机单元模制并将均匀的薄片拉制成非纤维状，整体式，超高分子量的聚乙烯胶带。 多压延工艺和随后的拉伸阶段将非纤维UHMWPE带拉伸至至少100-1的总拉伸，以产生模量为1400克/旦尼尔或更高的高模量，高强度UHMWPE组分。 本发明的多压延方法能够以显着更高的速率和更低的单位成本生产用于防弹制品的高强度，高模量UHMWPE组分和其它应用。

    Method and apparatus for the production of high tenacity polyolefin sheet
    28.
    发明授权
    Method and apparatus for the production of high tenacity polyolefin sheet 有权
    用于生产高强度聚烯烃片材的方法和设备

    公开(公告)号：US08142699B2

    公开(公告)日：2012-03-27

    申请号：US12928617

    申请日：2010-12-15

    申请人： Kenneth C. Harding ,  Gene C. Weedon

    发明人： Kenneth C. Harding ,  Gene C. Weedon

    IPC分类号： B29C43/26

    CPC分类号： B29C67/04 ,  B29C43/22 ,  B29C71/02 ,  B29C2071/022 ,  B29K2023/0683

    摘要： A process for the production of virtually full density polyolefin suitable for further processing by drawing to form a high tenacity, highly oriented polyolefin sheet comprising: a) feeding a metered amount of polyolefin powder into the nip between two heated calender rolls initially set at a gap smaller than the size of the smallest polyolefin powder particle and at a temperature above the melting point of the powder; b) rolling the powder through the nip under these conditions until a coherent sheet of polyolefin is produced: and c) once a coherent sheet of polyolefin exits the nip lowering the temperature in the nip to a temperature below the melting point of the polyolefin powder and increasing the gap to a desired level above the thickness of the largest powder particle. Apparatus for the performance of such a process is also described.

    摘要翻译： 一种用于生产几乎全密度聚烯烃的方法，其适用于通过拉伸形成高强度，高取向聚烯烃片材的进一步加工，其包括：a）将计量的聚烯烃粉末进料到初始设定在间隙处的两个加热的压延辊之间的辊隙中 小于最小聚烯烃粉末颗粒的尺寸，并且在高于粉末熔点的温度下; b）在这些条件下滚动粉末通过辊隙，直到产生粘结的聚烯烃片材，并且c）一旦聚烯烃的相干片材离开辊隙将辊隙中的温度降低到低于聚烯烃粉末熔点的温度， 将间隙增加到高于最大粉末颗粒厚度的所需水平。 还描述了用于执行这种处理的装置。

    Method and apparatus for the production of high tenacity polyolefin sheet
    29.
    发明授权
    Method and apparatus for the production of high tenacity polyolefin sheet 有权

    公开(公告)号：US08109750B2

    公开(公告)日：2012-02-07

    申请号：US12928612

    申请日：2010-12-15

    申请人： Kenneth C. Harding ,  Gene C. Weedon

    发明人： Kenneth C. Harding ,  Gene C. Weedon

    IPC分类号： B29C43/24 ,  B29C43/34

    CPC分类号： B29C67/04 ,  B29C43/22 ,  B29C71/02 ,  B29C2071/022 ,  B29K2023/0683

    摘要： A process for the production of virtually full density polyolefin suitable for further processing by drawing to form a high tenacity, highly oriented polyolefin sheet comprising: a) feeding a metered amount of polyolefin powder into the nip between two heated calender rolls initially set at a gap smaller than the size of the smallest polyolefin powder particle and at a temperature above the melting point of the powder; b) rolling the powder through the nip under these conditions until a coherent sheet of polyolefin is produced: and c) once a coherent sheet of polyolefin exits the nip lowering the temperature in the nip to a temperature below the melting point of the polyolefin powder and increasing the gap to a desired level above the thickness of the largest powder particle. Apparatus for the performance of such a process is also described.