摘要:
A barrier packaging material containing a composite which comprises i) a cellulosic layer; ii) at least one metal layer which will dissolve under alkaline conditions; and iii) at least one polymer layer, in which the polymer is hydrolysable under alkaline conditions. The invention also relates to articles comprising the barrier packaging material. Further, the invention concerns the use of a polymer, which is hydrolysable under alkaline conditions, as a protective layer in barrier packaging products. In addition the present application is also concerned with a method for recycling the aforementioned barrier packaging products. Specifically the barrier packaging products are initially taken in an aqueous wastepaper suspension which is either pulped in an alkaline medium and/or treated in an alkaline medium in a deinking process and in which the metal and polymer are then separated from the cellulosic fibres contained in the cellulosic layer.
摘要:
A method for recycling a paper product sized, coated, or both sized and coated with a polymer, including: pulping an aqueous wastepaper suspension including a paper product in the presence of a hydrolase, the paper product being a paper product sized and/or coated with a polyester to obtain an aqueous solution, which is a waste paper suspension including a mixture of paper fibers and the polyester, and separating the polyester from the wastepaper suspension to recycle the paper fibers of the paper product, wherein the polyester is a polyester having a melt flow rate according to EN ISO 1133 (190° C., 2.16 kg weight) of from 2 to 50 cm3/10 min, and the hydrolase includes at least one of a carboxyesterase [3.1.1.1], a lipase [3.1.1.3], and a cutinase [3.1.1.74].
摘要翻译:一种用于回收尺寸,涂层或尺寸均匀并且涂覆有聚合物的纸制品的方法,包括:在水解酶存在下制浆包含纸产品的水性废纸悬浮液,所述纸制品是大小和/或涂布的纸制品 与聚酯一起获得水溶液,其是包括纸纤维和聚酯的混合物的废纸悬浮液,并将聚酯与废纸悬浮液分离以再循环纸制品的纸纤维,其中聚酯是具有 根据EN ISO 1133(190℃,2.16kg重量)的熔体流动速率为2至50cm 3 / 10min,并且水解酶包括羧酸酯酶[3.1.1.1],脂肪酶[3.1。 1.3]和角质酶[3.1.1.74]。
摘要:
A method for recycling paper products sized and/or coated with polymers, in which the paper products sized and/or coated with polymers are initially taken in an aqueous wastepaper suspension, this wastepaper suspension a) is pulped in the presence of at least one hydrolase, b) is pulped in an alkaline medium, and/or c) is treated in an alkaline medium in a deinking process, and the polymers are then separated from the wastepaper suspension, the polymers being biodegradable polymers.
摘要:
The present invention relates to single face or double faced corrugated fiberboard comprising one or more corrugated plies, wherein at least one of the linerboard plies or corrugated plies is a paper-film assembly comprising: i) a 30 to 600 g/m2 grammage papery material of construction, ii) a biodegradable polymeric coating from 1 to 100 μm in thickness. More particularly, the present invention relates to single face or double faced and/or corrugated fiberboard comprising one or more corrugated plies, wherein at least one of the linerboard plies or corrugated plies is a paper-film assembly comprising: i) a 30 to 600 g/m2 grammage papery material of construction as outer layer, ii) a biodegradable polymeric coating from 1 to 100 μm in thickness as interlayer, and iii) a 30 to 600 g/m2 grammage papery material of construction as inner layer. The present invention further relates to methods of producing this corrugated fiberboard.
摘要翻译:本发明涉及包括一个或多个波纹层的单面或双面瓦楞纤维板,其中至少一个衬板层或波纹层是纸膜组件,其包括:i)30至600g / m2克重纸质材料 的构造,ii)厚度为1至100μm的可生物降解的聚合物涂层。 更具体地,本发明涉及包括一个或多个波纹层的单面或双面和/或瓦楞纤维板,其中所述衬板层或波纹层中的至少一个是纸膜组件,其包括:i)30至600 g / m2构建外层纸质材料,ii)作为中间层的厚度为1〜100μm的可生物降解的聚合物涂层,以及iii)30〜600g / m 2的作为内层结构的构造纸质材料。 本发明还涉及生产该瓦楞纤维板的方法。
摘要:
The present invention relates to a process for producing filled paper, card and board comprising dewatering a paper stock with sheet formation and drying, wherein biodegradable polyester fibers and/or polyalkylene carbonate fibers are added to the paper stock.
摘要:
The present invention relates to single face or double faced corrugated fiberboard comprising one or more corrugated plies, wherein at least one of the linerboard plies or corrugated plies is a paper-film assembly comprising: i) a 30 to 600 g/m2 grammage papery material of construction, ii) a biodegradable polymeric coating from 1 to 100 μm in thickness. More particularly, the present invention relates to single face or double faced and/or corrugated fiberboard comprising one or more corrugated plies, wherein at least one of the linerboard plies or corrugated plies is a paper-film assembly comprising: i) a 30 to 600 g/m2 grammage papery material of construction as outer layer, ii) a biodegradable polymeric coating from 1 to 100 μm in thickness as interlayer, and iii) a 30 to 600 g/m2 grammage papery material of construction as inner layer. The present invention further relates to methods of producing this corrugated fiberboard.
摘要翻译:本发明涉及包括一个或多个波纹层的单面或双面瓦楞纤维板,其中至少一个衬板层或波纹层是纸膜组件,其包括:i)30至600g / m2克重纸质材料 的构造,ii)厚度为1至100μm的可生物降解的聚合物涂层。 更具体地,本发明涉及包括一个或多个波纹层的单面或双面和/或瓦楞纤维板,其中所述衬板层或波纹层中的至少一个是纸膜组件,其包括:i)30至600 g / m2构建外层纸质材料,ii)作为中间层的厚度为1〜100μm的可生物降解的聚合物涂层,以及iii)30〜600g / m 2的作为内层结构的构造纸质材料。 本发明还涉及生产该瓦楞纤维板的方法。
摘要:
The present invention relates to powder compositions whose particles comprise at least one inorganic pigment, wherein at least one biodegradable polyester polymer and/or polyalkylene carbonate polymer is arranged on the pigment surface, a process for producing these powder compositions and use thereof in the production of paper, card and board.
摘要:
Process for the production of paper, board and cardboard having high dry strength by addition of at least one water-soluble (a) polymer comprising vinylamine units and at least one (b) polymer comprising ethylenimine units and at least one water-soluble polymeric anionic compound to a paper stock, draining of the paper stock with sheet formation and drying of the paper products, the water-soluble cationic polymers (a) and (b) being metered in any sequence or as a mixture into a paper stock, and papers which are obtainable by this process.
摘要:
The present invention relates to an aqueous composition comprising at least one finely divided filler and at least one water-soluble amphoteric copolymer, a process for the preparation of such a composition and its use as an additive in the production of paper, cardboard and board.
摘要:
A façade or roof structure in light weight construction having at least one film element made of at least one film or fabric layer which forms the outer walls of a weather-proof cavity which can be filled with a gas, at least one material layer for reducing the transmission of energy by radiation and/or for noise insulation being disposed on at least one side of the film or fabric layer. The material layer is almost totally enclosed by the film or fabric layer in order to protect against climatic conditions.