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    • 7. 发明授权
    • Low-noise film unwrapping and device
    • 低噪音膜包装和装置
    • US5884453A
    • 1999-03-23
    • US892559
    • 1997-07-14
    • David B. RamseyRobert G. VidaurriBrad A. CoblerThomas Oswald
    • David B. RamseyRobert G. VidaurriBrad A. CoblerThomas Oswald
    • B65B11/04B65B53/00
    • B65B11/045
    • A method and device for unwrapping self-adhering films at reduced noise levels are disclosed. The method and device include means to maintain a sufficiently high unwrapping take-off angle during the unwrapping and dispensing or unwinding of film rollstock. Suitable means provide for substantial acceleration and adjustment of the rollstock rotational speed relative to the speed of the first power driven member of an unwrapping apparatus, or the use of one or more carefully positioned deflector members. The method and device is particularly useful in unwrapping and dispensing operations of high cling stretch wrap films involving the use of turntable-style power driven equipment as well as in unwrapping and unwinding operations of pressure-sensitive adhesive tapes.
    • 公开了以降低的噪声水平展开自粘膜的方法和装置。 该方法和装置包括在薄膜卷筒的展开和分配或展开期间保持足够高的展开起飞角度的装置。 合适的装置提供了相对于展开装置的第一动力驱动构件的速度或使用一个或多个精心定位的导流构件的卷筒转速的显着加速和调节。 所述方法和装置在涉及使用转台式动力驱动设备的高粘附拉伸包装膜的展开和分配操作以及压敏粘合带的展开和展开操作中特别有用。
    • 10. 发明授权
    • Blends of ethylenic polymers with improved modulus and melt strength and articles fabricated from these blends
    • 具有改进的模量和熔体强度的乙烯类聚合物的共混物和由这些共混物制成的制品
    • US06723793B2
    • 2004-04-20
    • US10350564
    • 2003-01-24
    • Thomas OswaldBharat I. ChaudharyJeffrey Weinhold
    • Thomas OswaldBharat I. ChaudharyJeffrey Weinhold
    • C08L2306
    • C08L23/0815C08L23/02C08L2205/02C08L2207/07C08L2666/04
    • A blend which comprises; A) a heterogeneous or homogenous linear ethylene homopolymer or interpolymer; B) a branched homopolymer or interpolymer; wherein said blend has; 1) a melt index, I2, of about 0.05 to about 20 g/10 min; 2) a flexural modulus of ≧100,000 psi or ≦30,000 psi; 3) a melt strength of ≧2 cN; 4) a melt extensibility of ≧25 mm/sec; and 5) wherein said melt strength of said blend meets the following relationship; Melt strength≧FMS*[(f*A)+((1−f)*B)]; where: A=3.3814*(I2)−06476 and B=16.882*(I2)−06564; where I2 is the measured melt index of the blend; f is the weight fraction of the linear polyethylene in the blend and FMS is ≧1.1. Also included in the present invention are foams, films, fibers, blow molded articles, wire and cable articles and extrusion coatings comprising said blend.
    • 一种共混物,其包含:A)非均相或均匀的线性乙烯均聚物或互聚物; B)支化均聚物或互聚物;其中所述共混物具有:1)约0.05至约20g / 10min的熔体指数I 2; 2 )≥100000psi或<= 30,000PSI的挠曲模量; 3)≥2cN的熔体强度; 4)> 25mm / sec的熔体延展性; 和5)其中所述共混物的熔体强度满足以下关系:其中:A = 3.3814 *(I2)< - 06476>和B = 16.882 *(I2)< - 06564>; 其中I 2是混合物的测量熔体指数; f是共混物中线性聚乙烯的重量分数,FMS = 1.1。本发明还包括泡沫,膜,纤维,吹塑制品,电线和电缆制品以及包含所述共混物的挤出涂层。