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公开(公告)号：US4883698A
公开(公告)日：1989-11-28
申请号：US141728
申请日：1988-01-11
CPC分类号： B32B15/08 , C08F2/08 , G03G9/08702 , Y10S428/91 , Y10T428/1359 , Y10T428/24975 , Y10T428/2826 , Y10T428/31663 , Y10T428/31667 , Y10T428/31913
摘要： For packaging purposes, metallized multilayer films containing a biaxially oriented polypropylene film as a base layer should have high scratch resistance, good heat-sealing properties, such as low heat-sealing temperature, attractive visual properties, such as high metallic luster, excellent metallizability of the base layer or of a covering layer, and also good processing properties during metallization, printing, slitting, and during processing on fast-running packaging machines. This requirement profile is fulfilled by a multilayer film of asymmetric structure containing a biaxially oriented base layer 4 composed of polypropylene, a heat-sealing layer 3 which contains an additive combination composed of pigment in platelet form and siloxane and which is optionally modified by an addition of polypropylene and a hydrocarbon resin, and of a corona-treated polypropylene covering layer 2 which is not capable of being heat-sealed. A corona-treated, heat-sealable copolymer may also be used as the covering layer 2, instead of a covering layer 2 composed of non-heat-sealable polypropylene. The covering layer 2 can also be omitted; in that case the surface of the base layer 4 is metallized. Tubular bags, jackets, containers of various shape for packaging foodstuffs, including the vacuum packaging of foodstuffs, are manufactured from this multilayer film.
摘要翻译： 为了包装目的，含有作为基层的双轴取向聚丙烯薄膜的金属化多层膜应具有高的耐擦伤性，良好的热封性能，例如低的热封温度，有吸引力的视觉特性，例如高的金属光泽，优异的金属化性 基层或覆盖层，以及在快速运行的包装机器的金属化，印刷，切割和加工过程中也具有良好的加工性能。 该需求曲线通过包含由聚丙烯构成的双轴取向基底层4的不对称结构的多层膜来实现，该热封层3含有由片状的颜料和硅氧烷组成的添加剂组合，并且其任选地通过加成 的聚丙烯和烃树脂，以及不能被热密封的经电晕处理的聚丙烯覆盖层2。 也可以使用电晕处理的可热封的共聚物作为覆盖层2，而不是由不可热封的聚丙烯构成的覆盖层2。 覆盖层2也可以省略; 在这种情况下，基底层4的表面被金属化。 用这种多层膜制造包装食品的各种形状的管状袋，夹克，容器，包括食品的真空包装。
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公开(公告)号：US4663219A
公开(公告)日：1987-05-05
申请号：US780442
申请日：1985-09-26
CPC分类号： B32B27/32 , B32B27/20 , C08K3/0033 , Y10T428/2495 , Y10T428/265 , Y10T428/2813 , Y10T428/31
摘要： A coextruded multi-layer opaque film which has been biaxially oriented by stretching in the longitudinal direction and transverse direction at selected temperatures and with selected stretch ratios, and a method for producing the film. The film has a base layer of polypropylene or a copolymer thereof, and fillers. Its density is 0.4 to 0.6 g/cm.sup.3, the amount of filler, based on the mixture of polypropylene and filler, is 16 to 30% by weight, and the particles of the filler employed have a mean size of 2 to 5 .mu.m. Because of its reduced tendency to recover after folding, the film is particularly suitable for packaging purposes. One or more surface layers can be applied on either or both sides of the base layer.
摘要翻译： 一种共挤出的多层不透明膜，其通过在选定温度和选定的拉伸比下沿纵向和横向拉伸而双轴取向，以及该膜的制造方法。 该膜具有聚丙烯或其共聚物的基层和填料。 其密度为0.4〜0.6g / cm 3，基于聚丙烯和填料的混合物的填料量为16〜30重量％，所使用的填料的粒子的平均粒径为2〜5μm。 由于其折叠后恢复的趋势减少，因此该膜特别适用于包装目的。 可以在基层的一侧或两侧施加一个或多个表面层。
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公开(公告)号：US5026592A
公开(公告)日：1991-06-25
申请号：US288268
申请日：1988-12-22
IPC分类号： B32B27/20
CPC分类号： B32B27/20 , Y10T428/24876 , Y10T428/24967 , Y10T428/24992 , Y10T428/2826 , Y10T428/2982 , Y10T428/31913
摘要： Disclosed is an opaque, biaxially stretch-oriented, polyolefinic multilayered film comprising an opaque core layer and two transparent top layers. The core layer contains a mixture of1) about 45 to 90% by weight of a thermoplastic polymer comprising propylene,2) about 5 to 25% by weight of an inert, particulate filler, and3) about 5 to 30% by weight of a hydrocarbon resin being compatible with the thermoplastic polymer and having a softening point in the range from about 100.degree. to 160.degree. C.,the percentages being each time related to the total weight of the mixture. The top layers are free from admixtures comprising particulate filler and resin. The film possesses high resistance to delamination.
摘要翻译： 公开了一种不透明的双轴拉伸取向的聚烯烃多层膜，其包含不透明芯层和两个透明顶层。 核心层包含1）约45-90％重量的包含丙烯的热塑性聚合物，2）约5至25％重量的惰性颗粒填料和3％约5至30％重量的 烃树脂与热塑性聚合物相容并且软化点在约100至160℃的范围内，百分比每次都与混合物的总重量相关。 顶层没有包含颗粒填料和树脂的混合物。 该片具有很高的分层抵抗力。
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公开(公告)号：US4842187A
公开(公告)日：1989-06-27
申请号：US31379
申请日：1987-03-30
IPC分类号： B32B27/32 , B65D65/38 , B65D65/40 , C08K3/00 , C08L7/00 , C08L21/00 , C08L23/00 , C08L23/12 , C08L25/00 , C08L25/06 , C08L33/00 , C08L33/02 , C08L67/00 , C08L77/00 , C08L101/00
CPC分类号： C08L23/12 , B32B27/32 , C08L25/06 , Y10S206/80 , Y10S383/908 , Y10T428/1352 , Y10T428/1397 , Y10T428/26 , Y10T428/2826 , Y10T428/31913
摘要： Described is an opaque, biaxially draw-oriented thermoplastic film for candy twist wrapping. The film is formed from a polymer mixture comprising from about 40 to about 60% by weight of polypropylene and from about 35 to about 55% by weight of polystyrene, relative to the total weight of the mixture. The mixture additionally comprises from about 5 to about 15% by weight of a filler material, relative to the total weight of the mixture.
摘要翻译： 描述了用于糖果扭曲缠绕的不透明双轴拉伸取向热塑性薄膜。 相对于混合物的总重量，该膜由包含约40至约60重量％的聚丙烯和约35至约55重量％的聚苯乙烯的聚合物混合物形成。 该混合物相对于混合物的总重量另外包含约5至约15重量％的填料。
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公开(公告)号：US5110670A
公开(公告)日：1992-05-05
申请号：US365711
申请日：1989-06-14
CPC分类号： B32B27/20 , D21H19/02 , D21H27/30 , Y10T428/24975 , Y10T428/249969 , Y10T428/24997 , Y10T428/249986 , Y10T428/252 , Y10T428/254 , Y10T428/258 , Y10T428/259 , Y10T428/31913
摘要： A biaxially stretch-oriented film, suitable for the process of transfer metallizing, which comprises a base layer coextruded with covering layers on either side thereof and comprising an inert admixture is disclosed. The three layers are formed of polyolefin and the base layer comprises an additive which migrates from the base layer into the covering layers. The base layer contains the inert admixture in the form of finely divided particles, which partially protrude from the base layer and are completely enveloped by the covering layers. At least one of the two outer surfaces of the covering layers displays, at least in partial areas, an increased roughness attributable to the particles protruding from the base layer.
摘要翻译： 公开了一种适用于转移金属化过程的双轴拉伸取向薄膜，其包括在其两面上共挤出覆盖层并包含惰性混合物的基底层。 三层由聚烯烃形成，基层包括从基层向覆盖层迁移的添加剂。 基层包含细分颗粒形式的惰性混合物，其部分地从基层突出并被覆盖层完全包围。 覆盖层的两个外表面中的至少一个至少在部分区域中显示出归因于从基层突出的颗粒的增加的粗糙度。
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公开(公告)号：US4983447A
公开(公告)日：1991-01-08
申请号：US95448
申请日：1987-09-11
申请人： Guenther Crass , Siegfried Janocha , Lothar Bothe
发明人： Guenther Crass , Siegfried Janocha , Lothar Bothe
CPC分类号： B32B27/18 , B32B27/32 , Y10S428/906 , Y10T428/24975 , Y10T428/258 , Y10T428/259 , Y10T428/2826 , Y10T428/31663 , Y10T428/31913
摘要： An opaque polyolefin film having a base layer composed essentially of propylene polymers and having sealing layers present on both sides, composed essentially of sealable olefin polymers, is disclosed. From about 0.2% to 1.5% by weight, relative to the layer of polydialkylsiloxane is incorporated in one of the two sealing layers, and this layer has not been subjected to corona treatment. The other sealing layer has been subjected to corona treatment and has polydialkylsiloxane, not incorporated, but present on the outer surface of this layer, the polydialkylsiloxane having been transferred to this layer by contact between the sealing layer in which polydialkylsiloxane is incorporated. The relative polydialkylsiloxane occupancy of this layer, which is determined by means of ESCA spectroscopy, is not more than 15. The three-layer opaque polyolefin film is prepared by the coextrusion process. It is particularly suitable for use as a packaging film on high-speed packaging machines.
摘要翻译： 公开了一种不透明聚烯烃膜，其具有基本上由丙烯聚合物组成并具有基本上由可密封的烯烃聚合物组成的两侧上的密封层的基层。 相对于聚二烷基硅氧烷层，约0.2重量％至1.5重量％掺入两个密封层之一中，该层未进行电晕处理。 另一个密封层已进行电晕处理，并且具有未加入的聚二烷基硅氧烷，但存在于该层的外表面上，聚二烷基硅氧烷通过其中掺入聚二烷基硅氧烷的密封层之间的接触转移到该层。 通过ESCA光谱法测定的该层的相对聚二烷基硅氧烷占有率不超过15.三层不透明聚烯烃膜通过共挤出法制备。 特别适用于高速包装机上的包装薄膜。
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公开(公告)号：US4720420A
公开(公告)日：1988-01-19
申请号：US801808
申请日：1985-11-26
申请人： Gunther Crass , Lothar Bothe , Siegfried Janocha
发明人： Gunther Crass , Lothar Bothe , Siegfried Janocha
IPC分类号： B32B27/32 , C09D123/12 , C09J123/14 , B32B7/02 , B32B27/08 , C09J7/02
CPC分类号： C09D123/12 , B32B27/32 , C09J123/142 , Y10T428/24975 , Y10T428/259 , Y10T428/2826 , Y10T428/2848 , Y10T428/31663 , Y10T428/31667 , Y10T428/31913
摘要： A sealable, transparent polyolefinic multilayer film composed of a polypropylene base layer, a non-sealable surface layer, and a sealable surface layer, and process therefor. The sealable surface layer has a low minimum sealing temperature and is made from a copolymer of propylene and ethylene or butene-1 units and/or a terpolymer of ethylene, propylene and butene-1 units. The non-sealable layer is a combination of a propylene homopolymer, a slip agent, and an anti-blocking agent. The process includes coextruding the three layers, biaxially stretching the coextruded film, and subjecting the non-sealable layer to a corona-discharge treatment.
摘要翻译： 由聚丙烯基层，不可密封表面层和密封性表面层构成的可密封的透明聚烯烃多层膜及其工艺。 可密封的表面层具有低的最小密封温度，并由丙烯和乙烯或丁烯-1单元和/或乙烯，丙烯和丁烯-1单元的三元共聚物制成。 不可密封层是丙烯均聚物，增滑剂和防粘连剂的组合。 该方法包括共挤出三层，双轴拉伸共挤出膜，以及对不可密封层进行电晕放电处理。
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公开(公告)号：US4652489A
公开(公告)日：1987-03-24
申请号：US804890
申请日：1985-12-05
申请人： Gunther Crass , Siegfried Janocha , Lothar Bothe
发明人： Gunther Crass , Siegfried Janocha , Lothar Bothe
IPC分类号： B32B5/18 , B32B27/32 , C09D123/12 , C09J123/14 , B32B7/02
CPC分类号： C09D123/12 , B32B27/32 , C09J123/142 , Y10S428/91 , Y10T428/266 , Y10T428/2826 , Y10T428/31663 , Y10T428/31913
摘要： A sealable, opaque polyolefinic multilayer film composed of a polypropylene base layer, a non-sealable surface layer, and a sealable surface layer, and process therefor. The sealable surface layer has a low minimum sealing temperature and is made from a copolymer of propylene and ethylene or butene-1 units and/or a terpolymer of ethylene, propylene and butene-1 units. The non-sealable layer is a combination of a propylene homopolymer and a slip agent. The base layer contains an additive which is incompatible with polypropylene. The process includes stretching of the film, and during the stretching step, the polymer matrix is torn open around the additive particles to form vacuoles which give the base layer a degree of opacity.
摘要翻译： 由聚丙烯基层，不可密封表面层和可密封表面层构成的可密封的不透明聚烯烃多层膜及其工艺。 可密封的表面层具有低的最小密封温度，并由丙烯和乙烯或丁烯-1单元和/或乙烯，丙烯和丁烯-1单元的三元共聚物制成。 不可密封层是丙烯均聚物和滑爽剂的组合。 基层含有与聚丙烯不相容的添加剂。 该方法包括拉伸膜，并且在拉伸步骤期间，聚合物基体围绕添加剂颗粒被撕开以形成空泡，这使得基层具有一定程度的不透明度。
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公开(公告)号：US5288437A
公开(公告)日：1994-02-22
申请号：US878258
申请日：1992-05-04
摘要： A process is described to produce ultra thin biaxially stretched film made of thermoplastic where at least two film webs are superimposed and stretched together in both the longitudinal and transverse directions. The film webs are subjected to a heat treatment before the first draw step. After stretching, the film webs are separated again from each other.
摘要翻译： 描述了一种制造由热塑性塑料制成的超薄双轴拉伸膜的方法，其中至少两个薄膜腹板在纵向和横向方向上叠加并拉伸在一起。 在第一次拉伸步骤之前对薄膜网进行热处理。 拉伸后，将膜片彼此重新分离。
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公开(公告)号：US5229140A
公开(公告)日：1993-07-20
申请号：US857185
申请日：1992-03-25
CPC分类号： B29C47/92 , B29C47/0019 , B29C47/0021 , B29C47/165 , B29C47/86 , B29C47/862 , B29C2947/92152 , B29C2947/92428 , B29C2947/92647 , B29C2947/92704 , B29C2947/92904 , Y10S264/46 , Y10S425/013
摘要： A device for smoothing out the thickness of a sheet of thermoplastic material which includes a sheet die and a heating device which is integrated with the upper die lip of the sheet die. The heating device includes a hollow box filled with a liquid and a bar which projects laterally beyond the endfaces of the hollow box. The inlet and outlet openings of the bar in the hollow box are sealed. Arranged on the underside of the bar are small hot plates which are electrically heated. The liquid in the hollow box serves as a heat transfer medium and typically is an oil having a boiling point higher than 280.degree. C. The thickness profile of the extruded sheet is controlled, on the one hand, via controlling elements and, on the other hand, remaining thick and/or thin points of the sheet profile are smoothed by the bar of the heating device, in which the bar is progressively moved transversely with respect to the running direction of the sheet across the sheet width with the aid of a motor into a position in which the small hot plates are aligned with the thick/thin points to be smoothed. The corresponding thick/thin points of the sheet are smoothed by exposing the small hot plates to different temperatures or heating powers.
摘要翻译： 一种用于平滑热塑性材料片的厚度的装置，其包括片模和与片模的上模唇一体化的加热装置。 加热装置包括填充有液体的中空箱和横向突出于中空箱的端面的杆。 中空箱中的杆的入口和出口被密封。 安排在酒吧底部的是电加热的小型热板。 中空箱中的液体用作传热介质，通常是沸点高于280℃的油。一方面通过控制元件控制挤出片材的厚度分布，另一方面 通过加热装置的条来平滑片材型材的剩余厚度和/或薄点，其中杆通过电动机相对于片材的运行方向在片材宽度上横向逐渐移动 进入其中小热板与厚/薄点对准的位置，以使其平滑。 通过将小的热板暴露于不同的温度或加热功率来使片材的相应厚/薄点平滑。
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