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    Process for producing ultrasonic seal, and film structures and flexible containers with same
    4.
    发明授权
    Process for producing ultrasonic seal, and film structures and flexible containers with same 有权

    公开(公告)号：US10293575B2

    公开(公告)日：2019-05-21

    申请号：US14776862

    申请日：2014-04-09

    Applicant: Dow Global Technologies LLC

    Inventor： Selim Bensason ,  Jozef J. Van Dun ,  Gagan Saini

    IPC: B32B7/12 ,  B32B27/32 ,  B32B15/08 ,  B32B27/08 ,  B32B27/34 ,  B32B37/06 ,  B32B27/36 ,  B29C65/08 ,  B29C65/82 ,  B29C65/00

    Abstract: The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, ΔHm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125° C., (c) a storage modulus in shear (G′) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G″) greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

    MULTILAYER FILMS, ARTICLES COMPRISING THE SAME, METHODS OF MANUFACTURING MULTILAYER FILMS
    5.
    发明申请
    MULTILAYER FILMS, ARTICLES COMPRISING THE SAME, METHODS OF MANUFACTURING MULTILAYER FILMS 审中-公开

    公开(公告)号：US20190126598A1

    公开(公告)日：2019-05-02

    申请号：US16094619

    申请日：2017-06-28

    Applicant: Dow Global Technologies LLC

    Inventor： Yijian Lin ,  Wenyi Huang ,  Selim Bensason

    IPC: B32B27/08 ,  B32B27/32 ,  B32B27/30 ,  B32B27/28 ,  B65D65/40 ,  B32B7/035 ,  B32B38/00

    Abstract: The present invention provides multilayer films, packages formed from such films, and methods of making multilayer films. In one aspect, a multilayer film comprises multilayer film comprising at least 3 layers, each layer having opposing facial surfaces and arranged in the order A/B/C, wherein Layer A comprises a high density polyethylene having a Mw,cc/Mn,cc of at least 6.0, a Mz,abs of at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957-0.970 g/cm3, wherein the high density polyethylene comprises at least 90 percent by weight of Layer A; Layer B comprises a gas permeation layer, wherein a top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A; and Layer C comprises a high density polyethylene having a Mw,cc/Mn,cc of at least 6.0, a Mz,abs of at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957-0.970 g/cm3, wherein the high density polyethylene comprises at least 90 percent by weight of Layer C and wherein a top facial surface of Layer C is in adhering contact with a bottom facial surface of Layer B, wherein the film is oriented in the machine direction and wherein the film exhibits a normalized carbon dioxide transmission rate of at least 3000 cm3·mil/100 in2/day when measured according to ASTM F-2476 at 23° C., 0% relative humidity, and 1 atm, and wherein the film exhibits a ratio of the carbon dioxide transmission rate to an oxygen transmission rate of at least 4.0, when the oxygen transmission rate is measured according to ASTM D3985 at 23° C., 0% relative humidity, and 1 atm.

    PROCESS TO PRODUCE ENHANCED MELT STRENGTH ETHYLENE/ALPHA-OLEFIN COPOLYMERS AND ARTICLES THEREOF
    9.
    发明申请
    PROCESS TO PRODUCE ENHANCED MELT STRENGTH ETHYLENE/ALPHA-OLEFIN COPOLYMERS AND ARTICLES THEREOF 有权
    生产增强熔体强度乙烯/丙烯共聚物的方法及其制品

    公开(公告)号：US20160326283A1

    公开(公告)日：2016-11-10

    申请号：US15216473

    申请日：2016-07-21

    Applicant: Dow Global Technologies LLC

    Inventor： Lawrence J. Effler ,  Teresa P. Karjala ,  Mehmet Demirors ,  Nilesh R. Savargaonkar ,  Selim Bensason ,  Zhe Zhou

    IPC: C08F210/16 ,  C08K5/52 ,  C08K5/134

    CPC classification number: C08F210/16 ,  C08F2/06 ,  C08F10/02 ,  C08J3/201 ,  C08J5/18 ,  C08J2323/06 ,  C08J2323/08 ,  C08K5/134 ,  C08K5/52 ,  C08K5/524 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L23/20 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/17

    Abstract: An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

    Abstract translation: 包含衍生自乙烯的单元的乙烯/α-烯烃共聚物; 和衍生自至少一种α-烯烃的单元; 其中所述乙烯/α-烯烃共聚物的密度在0.90至0.94g / cc的范围内; 熔体指数（I 2）在0.05至50dg / min的范围内; Mw / Mn为3至5; 并且提供了乙烯/α-烯烃共聚物中每100万个碳原子的300-500个乙烯基不饱和度。 还提供了一种生产乙烯/α-烯烃共聚物的方法，包括：（1）在聚合反应器中聚合乙烯和一种或多种α-烯烃; （2），由此产生具有每1,000,000个碳原子具有300-500个乙烯基不饱和单元的增强的熔融强度乙烯/α-烯烃共聚物，密度在0.90-0.94g / cc范围内; 熔体指数（I 2）在0.05至50dg / min的范围内; Mw / Mn为3〜5。

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