摘要:
The invention more particularly relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.0 to 8.0 μm (based on the mass of the top layer (A)), wherein c) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.3 and e) the layer thickness of the top layer (A) dA being from 0.5 to 2.5 μm.
摘要:
The invention more particularly relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from at least APET, the heatsealable and peelable top layer (A) consisting of a) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.0 to 8.0 μm (based on the mass of the top layer (A)), wherein c) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.3 and e) the layer thickness of the top layer (A) dA being from 0.5 to 2.5 μm.
摘要翻译:本发明更具体地涉及一种共挤出透明的双轴取向聚酯膜,其包含可从至少APET剥离的基底层(B)和可热封顶层(A),所述可热封和可剥离的顶层(A)由 )80-98重量%的聚酯和b)2-10重量%的平均直径d <50> 2.0至8.0微米的无机和/或有机颗粒(基于 顶层(A)),其中c)聚酯由30-95mol%的衍生自至少一种芳族二羧酸的单元和5-70mol%衍生自至少一种脂族二羧酸的单元组成, d)顶层(A)的粒径d <50%和层厚度d A A的比例大于1.3,e)顶层的层厚度( A)d A a为0.5至2.5μm。
摘要:
The invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a hotsealable top layer (A) which is peelable from APET, the hotsealable and peelable top layer (A) consisting of a) 80-98% by weight of polyester and b) 2-10% by weight of inorganic and/or organic particles having an average diameter d50 of from 2.0 to 8.0 μm (based on the mass of the top layer (A)), and c) the polyester being composed of 30-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-70 mol % of units which derive from at least one aliphatic dicarboxylic acid, d) the ratio of particle size d50 and layer thickness dA of the top layer (A) being greater than 1.3 and e) the layer thickness of the top layer (A) dA being from 0.5 to 2.5 μm. The invention further relates to a process for producing the film and to its use.
摘要:
The invention relates to a white, sealable, thermoformable, biaxially oriented and coextruded polyester film that comprises at least one base layer B and at least one sealable cover layer A, wherein at least the base layer B contains a polyester starting compound and a cycloolefin copolymer (COC). The polyester starting compound should contain an increased amount of diethylene glycol, polyethylene glycol or isophthtalic acid. The invention further relates to a method for producing the inventive polyester film and to the use thereof for thermoformed articles, especially on high-speed machines.
摘要:
This invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable with respect to at least CPET. The heatsealable and peelable top layer (A) consists of a) 70–97% by weight of polyester and b) 3–20% by weight of a polyester-incompatible polymer (=anti-PET polymer) based on the mass of the top layer (A), wherein c) the polyester is composed of 20–95 mol % of units derived from at least one aromatic dicarboxylic acid and 5–80 mol % of units derived from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, and d) the layer thickness of the top layer (A) dA is from 1.7 to 6.0 μm. The invention further relates to a process for producing the film and to its use.
摘要翻译:本发明涉及一种共挤出,透明的双轴取向聚酯膜,其包含相对于至少CPET可剥离的基底层(B)和可热封顶层(A)。 可热封和可剥离顶层(A)由以下组成:a)70-97重量%的聚酯和b)3-20重量%的聚酯不相容的聚合物(=抗PET聚合物),基于顶部的质量 层(A),其中c)聚酯由20-95mol%的衍生自至少一种芳族二羧酸的单元和5-80mol%衍生自至少一种脂族二羧酸的单元组成,二羧酸 酸衍生的摩尔百分比为100,d)顶层(A)d A A的层厚度为1.7至6.0μm。 本发明还涉及一种制备该膜及其用途的方法。
摘要:
The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a polymer, or of a mixture of polymers, which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 40% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer, and at least one film surface has a surface tension of from 35 to 65 mN/m and/or has been provided with a functional coating of thickness from 5 to 100 nm. The film has low atmospheric oxygen transmission. It is particularly suitable for packaging uses, specifically for packaging foods and other consumable items, and for laminating, metallizing and printing.
摘要翻译:本申请公开了一种透明的双轴取向聚酯膜,其具有至少80重量%的基层,其由热塑性聚酯组成,并具有至少一个外层,其中外层由聚合物或 聚合物的混合物,其包含至少40重量%的2,6-萘二甲酸乙二醇酯单元和至多40重量%的来自脂环族或芳族二醇和/或二羧酸的对苯二甲酸乙二醇酯单元和/或单元,条件是 聚酯薄膜的T T g 2值高于基层的T 2 g 2值,但低于基层的T 2 g 2值 外层,并且至少一个膜表面具有35至65mN / m的表面张力和/或具有厚度为5至100nm的功能性涂层。 该膜具有低气氛氧传输。 特别适用于包装用途,专门用于包装食品和其他消耗品,以及层压,金属化和印刷。
摘要:
The application discloses a sealable biaxially oriented polyester film having a base layer B at least 80% by weight of which is composed of a thermoplastic polyester, and having two outer layers A and C, wherein the outer layer A is composed of a polymer or of a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units and up to 60% by weight of ethylene terephthalate units and/or units from cycloaliphatic or aromatic diols and/or dicarboxylic acids, and the opposite outer layer C is sealable and has a sealing initialization temperature of from about 100 to 200° C. The film has low atmospheric oxygen transmission. It is particularly suitable for packaging applications, specifically for packaging foods and other consumable items.
摘要:
A biaxially oriented polyester film is disclosed which has a base layer of at least 80% by weight of a thermoplastic polyester, and which has a cover layer and, located on the cover layer, a layer functioning as an O2 barrier, wherein said cover layer is composed of a polymer or of a mixture of polymers which comprises at least 40% by weight of ethylene 2,6-naphthalate units; 0% up to 40% by weight of ethylene terephthalate units; and, if desired, up to 60% by weight of units from other aliphatic, cycloaliphatic or aromatic diols and/or aliphatic, cycloaliphatic or aromatic dicarboxylic acids; with the proviso that the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the cover layer. The film has particularly low atmospheric oxygen transmission and has high gloss. It is particularly suitable for packaging light- and air-sensitive foodstuffs and other light- and air-sensitive consumable items, and also for producing insulating materials.
摘要:
The invention relates to a coextruded, transparent, biaxially oriented polyester film comprising a base layer (B) and a heatsealable top layer (A) which is peelable from APET, the heatsealable and peelable top layer (A) consisting of 70-97% by weight of polyester and 3-20% by weight of a polyester-incompatible polymer (=anti-PET polymer) based on the mass of the top layer (A), and the polyester being composed of 20-95 mol % of units which derive from at least one aromatic dicarboxylic acid and 5-80 mol % of units which derive from at least one aliphatic dicarboxylic acid, the sum of the dicarboxylic acid-derived molar percentages being 100, and the layer thickness of the top layer (A) dA being from 1.7 to 6.0 μm. The invention further relates to a process for producing the film and to its use.
摘要:
The application discloses a transparent, biaxially oriented polyester film having a base layer at least 80% by weight of which is composed of a thermoplastic polyester, and having at least one outer layer, wherein the outer layer is composed of a copolymer or of a mixture of polymers which comprises at least 35 mol % of ethylene 2,6-naphthalate units, up to 44 mol % of ethylene terephthalate units, and from 1 to 20 mol % of ethylene isophthalate units, and also up to 20 mol % of a sulfo-substituted dicarboxylic acid and, if desired, up to 10 mol % of units from aliphatic, including cycloaliphatic, or aromatic diols and/or dicarboxylic acids (based in each case on the total content of dicarboxylic acid or diol).