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公开(公告)号：US5234733A
公开(公告)日：1993-08-10
申请号：US346788
申请日：1989-05-03
IPC分类号： B29C61/06 , B29K23/00 , B29K105/02 , B29L9/00 , B32B27/32
CPC分类号： B32B27/32 , B29K2995/0022 , Y10S428/91 , Y10T428/1393 , Y10T428/24967 , Y10T428/2826 , Y10T428/31913
摘要： A shrink film which is comprised of a plurality of polyolefinic layers is disclosed. The base layer comprises polypropylene and a hydrogenated hydrocarbon resin admixture, and the top layers on each side of the base layer comprise polyolefinic sealable raw materials. The film possesses a shrinkability of more than 15% in the transverse direction and of less than 6% in the longitudinal direction, both measured at 90.degree. C. Also disclosed is a process for manufacturing the film comprising coextrusion followed by stretching of the film in the longitudinal and transverse directions, whereby stretching in the longitudinal direction is performed such that the double refraction value .DELTA.n of the longitudinally oriented film is not greater than 15.times.10.sup.-3.
摘要翻译： 公开了一种由多个聚烯烃层组成的收缩膜。 基层包括聚丙烯和氢化烃树脂混合物，基层每侧的顶层包含聚烯烃密封的原料。 该膜在90℃下在横向上具有大于15％的收缩率和在纵向上的收缩率小于6％。还公开了一种制造该膜的方法，包括共挤出，随后将膜拉伸 纵向和横向，由此进行纵向拉伸，使得纵向取向膜的双折射率ΔTAn不大于15×10 -3。
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公开(公告)号：US4758396A
公开(公告)日：1988-07-19
申请号：US905190
申请日：1986-09-09
申请人： Guenther Crass , Gunter Schloegl , Lothar Bothe , Herbert Peiffer
发明人： Guenther Crass , Gunter Schloegl , Lothar Bothe , Herbert Peiffer
CPC分类号： C08J5/18 , C08J3/226 , C08K3/0033 , C08J2323/12 , Y10T428/25 , Y10T428/258 , Y10T428/259 , Y10T428/28 , Y10T428/2826 , Y10T428/31913
摘要： A process for the preparation of a biaxially stretch-oriented film having at least one opaque layer is described. The opaque layer is composed essentially of propylene polymer and fillers in a quantity of about 10 to 40% by weight, relative to the total weight of propylene polymer and fillers. In production, the granules are melted in a screw extruder, are forced through a die and are formed by cooling to give a preformed film. The preformed film is then stretch-oriented both along the machine direction and transversely perpendicular to the machine direction and is then heat-set. The fillers are added in the form of a masterbatch to the granules of unfilled polymers. The masterbatch should have a filler content of more than about 30% by weight.
摘要翻译： 描述了制备具有至少一个不透明层的双轴拉伸取向膜的方法。 相对于丙烯聚合物和填料的总重量，不透明层基本上由丙烯聚合物和填料组成，其量为约10至40重量％。 在生产中，颗粒在螺杆挤出机中熔化，被迫通过模具，并通过冷却形成以得到预成型膜。 然后将预成型薄膜沿机器方向和横向垂直于机器方向拉伸取向，然后热定形。 将填料以母料的形式加入未填充聚合物的颗粒中。 母料应具有大于约30重量％的填料含量。
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3.发明授权Transparent shrink film based on polypropylene, process for its manufacture, and its use for shrink labels 失效基于聚丙烯的透明收缩膜及其制造方法及其用于收缩标签
公开(公告)号：US5091237A
公开(公告)日：1992-02-25
申请号：US371300
申请日：1989-06-26
CPC分类号： B32B27/32 , B29C55/143 , B29K2023/12 , B29K2995/0049 , Y10S428/91 , Y10T428/24967 , Y10T428/2826 , Y10T428/31913 , Y10T428/31924
摘要： A shrink film comprising at least one polyolefinic layer comprising polypropylene and a resin admixture is disclosed. The film processes a shrinkability of more than 20%, measured at 90.degree. C., in the transverse direction and of less than 8%, also measured at 90.degree. C., in the longitudinal direction. The film is manufactured by coextrusion followed by stretching in the longitudinal and transverse directions, whereby stretching in the longitudinal direction is performed such that the birefringence value .DELTA.n of the longitudinally oriented film does not exceed the range from 10.times.10.sup.-3 to 13.times.10.sup.-3.
摘要翻译： 公开了包含至少一个包含聚丙烯和树脂混合物的聚烯烃层的收缩膜。 该薄膜在纵向方向上在90℃下测量的收缩率大于20％，并且在90℃下测量的小于8％。 通过共挤出然后沿纵向和横向拉伸制造薄膜，由此进行纵向拉伸，使得纵向取向薄膜的双折射值DELTA n不超过10×10 -3至13×10 -3的范围。
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公开(公告)号：US4975329A
公开(公告)日：1990-12-04
申请号：US274334
申请日：1988-11-21
申请人： Lothar Bothe , Guenther Crass , Gunter Schloegl , Thomas Wilheim
发明人： Lothar Bothe , Guenther Crass , Gunter Schloegl , Thomas Wilheim
IPC分类号： B29C55/12 , B29K23/00 , B29K105/34 , B29L9/00 , B32B27/32 , C08L23/12 , H01B17/60 , H01G4/18
CPC分类号： H01G4/18 , B32B27/32 , C08L23/12 , C08L23/06 , C08L23/0815 , C08L23/10 , C08L23/20 , C08L53/00 , Y10S428/91 , Y10T428/31692 , Y10T428/31913
摘要： A coextruded, biaxailly oriented multilayer film comprises a base layer comprising an extremely pure raw material and outer layer. It is suitable for use as an electrically insulating film, as a dielectric in an electrical capacitor, and has improved dielectrical properties for this purpose. The base layer and the outer layer or layers contain propylene polymer on one or both sides and stabilizers for propylene polymers. The raw material for the base layer has an idealized thermal oxidation temperature in the range of 260.degree. to 300.degree. C., preferably in the range 260.degree. to 280.degree. C., and the raw material for the outer layer or layers has an idealized thermal oxidation temperature in the region of 240.degree. to 300.degree. C., preferably in the range 240.degree. to 270.degree. C. The multilayer film as a whole has an idealized thermal oxidation temperature in the range 250.degree. to 290.degree. C., in paticular in the range 250.degree. to 275.degree. C. The content of organic neutralizing agents, in particular calcium stearate, in the raw materials is less than or equal to 100 ppm.
摘要翻译： 共挤出的双轴取向多层膜包括包含极纯原料和外层的基层。 它适合用作电绝缘膜，作为电容器中的电介质，并且为此目的具有改进的介电特性。 基层和外层或层在一侧或两侧含有丙烯聚合物和用于丙烯聚合物的稳定剂。 用于基层的原料具有理想的热氧化温度在260℃至300℃的范围内，优选在260℃至280℃的范围内，而外层的原料具有理想的 热氧化温度在240℃至300℃的范围内，优选在240℃至270℃的范围内。多层膜整体具有理想的热氧化温度在250°至290℃的范围内， 在250〜275℃的范围内，原料中的有机中和剂，特别是硬脂酸钙的含量小于或等于100ppm。
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公开(公告)号：US4912091A
公开(公告)日：1990-03-27
申请号：US111791
申请日：1987-10-23
申请人： Lothar Bothe , Guenther Crass , Gunter Schloegl
发明人： Lothar Bothe , Guenther Crass , Gunter Schloegl
CPC分类号： B32B27/32 , B32B27/18 , Y10S428/91 , Y10T428/1334 , Y10T428/24967 , Y10T428/31663 , Y10T428/31913
摘要： An on-sealable, biaxially oriented, transparent multi-layer film is disclosed comprising a base layer, two intermediate layers separated from each other by this base layer and two covering layers, one covering layer each being arranged on top of an intermediate layer, the intermediate layers containing a combination of additives comprising a long-chain aliphatic amine and an inorganic pigment and the covering layers containing, in each case, a polydialkylsiloxane. A process for the production of the multi-layer film and its use are also disclosed.
摘要翻译： 公开了一种可密封的双向取向的透明多层膜，其包括基层，由该基层彼此分离的两个中间层和两个覆盖层，每个覆盖层布置在中间层的顶部， 含有包含长链脂族胺和无机颜料的添加剂组合的中间层和在各种情况下包含聚二烷基硅氧烷的覆盖层。 还公开了生产多层膜的方法及其用途。
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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：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：US4863032A
公开(公告)日：1989-09-05
申请号：US167179
申请日：1988-03-11
申请人： Lothar Bothe , Gunter Schloegl , Guenther Crass
发明人： Lothar Bothe , Gunter Schloegl , Guenther Crass
CPC分类号： G11B33/0494 , G11B33/0411 , Y10T428/1355
摘要： A packaging wrapper for disk-shaped magnetic information carriers is disclosed. The wrapper is formed by folding over a blank to form a flat wrapper. The wrapper has projecting tabs jutting out laterally from the sides of the front wrapper wall and overlap zones on the rear wrapper wall formed as a result of folding-over of the projecting tabs. The projecting tabs are firmly bonded to the rear wrapper wall by means of welding. The blank for forming the packaging wrapper is formed from a biaxially oriented, opaque multi-ply film comprising a base layer consisting essentially of polypropylene and fillers. The fillers are present in a quantity in the range from 10 to 30% by weight, relative to the total weight of the polypropylene and fillers.
摘要翻译： 公开了一种用于盘形磁信息载体的包装包装。 包装物通过在坯料上折叠以形成平坦的包装物而形成。 包装纸具有从前包装壁的侧面横向突出并且由于突出突片折叠而形成的后包装壁上的重叠区域的突出片。 突出的突片通过焊接牢固地结合到后包装壁。 用于形成包装包装的坯料由双轴取向的不透明多层膜形成，其包括基本上由聚丙烯和填料组成的基层。 相对于聚丙烯和填料的总重量，填料的存在量为10-30重量％。
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9.发明授权
公开(公告)号：US5118566A
公开(公告)日：1992-06-02
申请号：US542045
申请日：1990-06-22
CPC分类号： C08J5/18 , C08K5/0008 , C08K5/0083 , C08L23/02 , C08L23/10 , C09J7/0271 , C08J2323/02 , C08L21/00 , C08L7/00 , Y10S428/91 , Y10T428/269 , Y10T428/2826 , Y10T428/31913
摘要： A biaxially-oriented film with high mechanical strength, which includes 69 to 94.99% by weight of a polyolefin, 5 to 30% by weight of a natural or synthetic resin having a softening point in the range from 70.degree. to 170.degree. C., and 0.01 to 1% by weight of a nucleating agent, based on the total weight of the film. A method for producing this film includes biaxially drawing the film at temperatures below the melting point of the polyolefin.
摘要翻译： 具有高机械强度的双轴取向膜，其包含69至94.99重量％的聚烯烃，5至30重量％的软化点在70至170℃的天然或合成树脂， 和0.01〜1重量％的成核剂，基于膜的总重量。 制造该膜的方法包括在低于聚烯烃熔点的温度下双轴拉伸薄膜。
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公开(公告)号：US5096630A
公开(公告)日：1992-03-17
申请号：US574056
申请日：1990-08-29
申请人： Lothar Bothe , Gunter Schloegl , Guenther Crass , Thomas Wilhelm
发明人： Lothar Bothe , Gunter Schloegl , Guenther Crass , Thomas Wilhelm
IPC分类号： B32B15/085 , B32B27/18 , B32B27/20 , B32B27/32
CPC分类号： B32B27/20 , B32B27/32 , Y10S428/91 , Y10T428/24975 , Y10T428/25 , Y10T428/31507 , Y10T428/31692 , Y10T428/31743 , Y10T428/31746 , Y10T428/31797 , Y10T428/31902 , Y10T428/31913 , Y10T428/31917
摘要： A process for producing a metallizable, sealable, biaxially stretch-oriented multi-ply film includes the steps of: providing melts of a predominantly polypropylene base layer, and first and second polyolefinic facing layers; co-extruding the melts through a flat film die, wherein the first and second polyolefinic facing layers are co-extruded on either side of the base layer; solidifying the co-extruded film by cooling; longitudinally stretching the co-extruded film at a temperature from about 120.degree. to 130.degree. C. in a ratio of from about 5 to 7:1; transversely stretching the co-extruded film at a temperature from about 160.degree. to 170.degree. C. in a ratio of from about 8 to 10:1; and corona-treating one facing layer of the co-extruded film which is metallizable. Each of the melts contains a calcium carbonate neutralizing agent having an absolute particle size of less than about 10 .mu.m, a mean particle size of less than about 0.1 .mu.m, a specific surface area of more than about 40 m.sup.2 /g and a whiteness of more than about 90%, and also a phenolic stabilizer against thermal degradation which has a molecular weight of more than about 1,000 g/mol, and wherein one polyolefinic facing layer contains an anti-blocking agent.
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