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    Heat shrinkable laminated packaging material
    45.
    发明授权
    Heat shrinkable laminated packaging material 失效
    热收缩层压包装材料

    公开(公告)号：US4652490A

    公开(公告)日：1987-03-24

    申请号：US769833

    申请日：1985-08-27

    Applicant: Masanobu Arita ,  Hisao Tanaka ,  Yukio Mogami

    Inventor： Masanobu Arita ,  Hisao Tanaka ,  Yukio Mogami

    IPC: B32B7/02 ,  B29C61/02 ,  B29C61/06 ,  B32B27/08 ,  C09J7/02 ,  B29D7/24

    CPC classification number: C09J7/0242 ,  B29C61/0616 ,  B32B27/08 ,  Y10S428/91 ,  Y10T428/2817 ,  Y10T428/31573 ,  Y10T428/31757 ,  Y10T428/31797 ,  Y10T428/31913

    Abstract: A heat shrinkable and heat sealable laminated packaging material comprising a heat shrinkable film which is endowed with a heat shrinkability by biaxial stretching in advance of lamination, such as biaxially stretched polyamide film or biaxially stretched polypropylene film, and a heat shrinkable polyolefin sealant film which is endowed with a heat shrinkability by stretching in advance of lamination, such as biaxially stretched linear low density polyethylene film, the sealant film being laminated on one or both surfaces of the heat shrinkable film. The laminated packaging material imparts a tight appearance to a finish package in heat shrink packaging due to its excellent heat shrinkability.

    Abstract translation: 一种热收缩且可热封的层压包装材料，其包括通过双轴拉伸聚酰胺薄膜或双轴拉伸聚丙烯薄膜等层叠之前通过双轴拉伸而具有热收缩性的热收缩薄膜和可热收缩聚烯烃密封胶膜， 通过层压之前的拉伸，例如双轴拉伸的线性低密度聚乙烯膜，具有热收缩性，密封膜层压在热收缩膜的一个或两个表面上。 由于其优异的热收缩性，层压包装材料在热收缩包装中对精加工包装施加紧密的外观。

    Extrusion of films of vinylidene fluoride polymers
    47.
    发明授权
    Extrusion of films of vinylidene fluoride polymers 失效
    偏二氟乙烯聚合物膜的挤出

    公开(公告)号：US4481158A

    公开(公告)日：1984-11-06

    申请号：US442122

    申请日：1982-11-16

    Applicant: Pierre Georlette ,  Nestor Maquet

    Inventor： Pierre Georlette ,  Nestor Maquet

    IPC: B29C49/00 ,  B29C47/00 ,  B29C55/00 ,  B29C55/06 ,  B29D7/00 ,  B29K27/12 ,  B29L7/00 ,  C08J5/18 ,  H01L41/45 ,  B29D7/24

    CPC classification number: C08J5/18 ,  B29D7/00 ,  H01L41/45 ,  B29C47/0021 ,  B29C47/0057 ,  C08J2327/02

    Abstract: The film (11) extruded from a vinylidene fluoride polymer is subjected to a stretching of at least 200% while still in the molten state, and then cooled rapidly to a temperature below 50.degree. C.The equipment comprises, in series, an extruding device (1) (2), a cooling device consisting of a thermostatically controlled liquid bath (6), the level of which is located at a distance of 10 to 300 mm from the extruding device, and a device (8) (9) for stretching the extruded film by at least 200% in its part located between the extruding device and the cooling device.The film obtained is suitable for manufacturing piezoelectric films.

    Abstract translation: 从偏二氟乙烯聚合物挤出的薄膜（11）在熔融状态下经受至少200％的拉伸，然后迅速冷却到低于50℃的温度。该设备包括串联的挤压装置 （1）（2）所示的冷却装置，所述冷却装置由与所述挤出装置的距离为10〜300mm的恒温控制液槽（6）组成，所述冷却装置（8）（9）用于 在挤出装置和冷却装置之间的部分将挤出的膜拉伸至少200％。 获得的膜适用于制造压电膜。

    Machine direction orientation of nylon film
    48.
    发明授权
    Machine direction orientation of nylon film 失效
    尼龙膜的机器方向取向

    公开(公告)号：US4477407A

    公开(公告)日：1984-10-16

    申请号：US467823

    申请日：1983-02-18

    Applicant: Brian L. Hetherington ,  Peter H. Gray ,  Alistair N. Mollison

    Inventor： Brian L. Hetherington ,  Peter H. Gray ,  Alistair N. Mollison

    IPC: B29C49/00 ,  B29C55/00 ,  B29C55/04 ,  B29C55/06 ,  B29K77/00 ,  B29L7/00 ,  B29D7/24 ,  B29G7/00

    CPC classification number: B29C55/06 ,  B29C55/005 ,  B29K2077/00

    Abstract: A process for machine direction orientation of nylon films in which nip rolls are applied to both the slow and fast orientation rolls with a substantially uniform force in the range of 15 to 45 N/cm width of nip roll. The temperature of the slow roll is held between 70.degree. and 180.degree. C. and the temperature of the fast roll is held between the temperature of the first roll and 20.degree. C. below the melting temperature of the nylon film. The distance between the orientation rolls is in the range of 10 to 2050 .mu.m.

    Abstract translation: 尼龙薄膜的机器方向取向的方法，其中夹持辊以慢速和快速取向辊施加在压辊宽度为15至45N / cm的范围内的基本均匀的力。 慢辊的温度保持在70〜180℃之间，快速辊的温度保持在第一辊的温度和低于尼龙膜的熔融温度的20℃之间。 取向辊之间的距离在10〜2050μm的范围内。

    Process for continuously producing an aromatic polyimide film
    49.
    发明授权
    Process for continuously producing an aromatic polyimide film 失效
    用于连续生产芳族聚酰亚胺膜的方法

    公开(公告)号：US4473523A

    公开(公告)日：1984-09-25

    申请号：US457441

    申请日：1983-01-12

    Applicant: Yoshikazu Sasaki ,  Hiroshi Inoue ,  Youji Negi ,  Kazuhiko Sakai

    Inventor： Yoshikazu Sasaki ,  Hiroshi Inoue ,  Youji Negi ,  Kazuhiko Sakai

    IPC: B29C47/00 ,  B29B7/00 ,  B29C31/00 ,  B29C39/00 ,  B29C39/24 ,  B29C41/12 ,  B29C47/88 ,  B29C47/92 ,  B29K79/00 ,  B29L7/00 ,  C08G73/10 ,  C08J5/18 ,  B29D7/24

    CPC classification number: C08G73/1067

    Abstract: An aromatic polyimide film having excellent mechanical, thermal and electrical properties, is continuously produced by the steps of:preparing a dope solution having a rotation viscosity of 500-10.sup.5 poises at 100.degree. C. by uniformly dissolving aromatic polyimide in a solvent consisting of at least one phenol compound; extruding the dope solution through a T-die at 50.degree. C. or more, but at least 30.degree. C. below the boiling point of the solvent, under conditions which cause the apparent viscosity and shear stress of the dope solution to be 500-5.times.10.sup.4 poises and 10.sup.4 -10.sup.6 dyne.multidot.cm.sup.-2, respectively, to form a filmy stream of the dope solution; placing the filmy stream of the dope solution on a surface of a supporting means while heating the surface at a temperature of 50.degree. C. or more and continuously moving it along its endless path, maintaining the placed filmy stream of the dope solution on the moving, heating surface of the supporting means until the filmy stream forms a film having a uniform thickness and then the film is solidifed by evaporating the solvent therefrom to an extent that the concentration of the solvent is 50% by weight or less; continuously peeling off the solidified film from the moving heating surface of the supporting means; and drying the peeled film at a temperature of 200.degree. C. to 600.degree. C. to provide an aromatic polyimide film free from the solvent.

    Abstract translation: 通过以下步骤连续生产具有优异的机械，热和电特性的芳族聚酰亚胺膜：在100℃下制备旋转粘度为500-105泊的涂料溶液，通过将芳族聚酰亚胺均匀地溶解在由 至少一种酚化合物; 在使溶液的表观粘度和剪切应力为500℃的条件下，在50℃以上，但低于溶剂沸点至少30℃的条件下，将掺杂溶液挤出， 5x104泊和104-106 dynexcm-2，以形成涂料溶液的薄膜流; 将涂料溶液的薄膜流放在支撑装置的表面上，同时在50℃或更高的温度下加热表面，并使其沿其环形路径连续移动，将涂布溶液的被放置的薄膜流保持在移动 加热支撑装置的表面，直到膜流形成具有均匀厚度的膜，然后通过从其中蒸发溶剂将膜固化至溶剂浓度为50重量％以下的程度; 连续地从支撑装置的移动加热表面剥离凝固膜; 在200〜600℃的温度下干燥剥离膜，得到不含溶剂的芳香族聚酰亚胺膜。

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