阅读说明：本技术 生产单层纸或多层纸的方法 (Method for producing single-ply or multi-ply paper ) 是由 C·阿梅尔 A·埃瑟尔 F·德布鲁因 C·A·格雷 R·伊泽曼 于 2018-10-10 设计创作，主要内容包括：本发明涉及一种生产干燥的单层纸或多层纸的方法,该方法包含以下对于单层纸的步骤：(A)使第一水性纤维悬浮液脱水,从而产生干含量在14重量％和25重量％之间的第一纤维幅,(D-1)通过压制使第一纤维幅脱水,从而产生部分脱水的第一纤维幅,(E-1)用喷涂溶液或喷涂悬浮液在至少一个表面侧上对部分脱水的第一纤维幅喷涂,这得到喷涂的部分脱水的第一纤维幅,(F-1)通过施加热使喷涂的部分脱水的第一纤维幅脱水以形成干燥的单层纸,或包含对于多层纸的上述步骤(A)和以下步骤：(B)使第二水性纤维悬浮液脱水,从而产生干含量在14重量％和25重量％之间的第二纤维幅,(C)将第一纤维幅组装到第二纤维幅,使得两个纤维幅在整个表面侧上彼此接触,从而得到层复合物,(D-2)通过压制使层复合物脱水,由此形成部分脱水的层复合物,(E-2)用喷涂溶液或喷涂悬浮液在至少一个表面侧上对部分脱水的层复合物喷涂,由此形成喷涂的层复合物,(F-2)通过加热手段使喷涂的层复合物脱水以形成干燥的多层纸,其中喷涂溶液或喷涂悬浮液包含(e-a)水和(e-b)至少一种水溶性聚合物P,该水溶性聚合物P可通过聚合以下物质而获得：(i)40至85摩尔％的式I的单体,其中R<Sup>1</Sup>＝H或C<Sub>1</Sub>-C<Sub>6</Sub>-烷基,(ii)15至60摩尔％的不同于式I的单体的一种或多种烯键式不饱和单体,其中所有单体(i)和(ii)的总量为100摩尔％,并且任选地通过聚合成聚合物P的式(I)的单体的单元的随后的部分或完全水解以形成伯氨基或脒基,其中基于喷涂溶液或喷涂悬浮液,水的比例为至少75重量％。<Image he="271" wi="478" file="DDA0002543371770000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>(The invention relates to a method for producing a dry single-ply or multi-ply paper, comprising the following steps for single-ply paper: (A) dewatering the first aqueous fibre suspension, thereby producing a first fibrous web having a dry content of between 14 and 25 wt.%, (D-1) dewatering the first fibrous web by pressing, thereby producing a partially dewatered first fibrous web, (E-1) spraying the partially dewatered first fibrous web with a spraying solution or a spraying suspension on at least one surface side, which results in a sprayed partially dewatered first fibrous web, (F-1) dewatering the sprayed partially dewatered first fibrous web by applying heat to form a dried single ply paper, or comprising the above step (a) and the following steps for a multi ply paper: (B) dewatering the second aqueous fibre suspension, thereby producing a second fibrous web having a dry content of between 14 and 25 wt.%, (C) assembling the first fibrous web to the second fibrous web such that the two fibrous webs are in contact with each other over the entire surface sides, thereby obtaining a layer composite, (D-2) dewatering the layer composite by pressing, thereby forming a partially dewatered layer composite, (E-2) spraying the partially dewatered layer composite on at least one surface side with a spraying solution or a spraying suspension, thereby forming a sprayed layer composite, (F-2) dewatering the sprayed layer composite by heating means to form a dried multi-layer paper, wherein the spray solution or spray suspension comprises (e-a) water and (e-b) at least one water-soluble polymer P, which is obtainable by polymerizing: (i)40 to 85 mole% of a monomer of formula I, wherein R 1 H or C 1 ‑C 6 -an alkyl group, (ii)15 to 60 mol% of one or more ethylenically unsaturated monomers other than the monomer of formula I, wherein the total amount of all monomers (I) and (ii) is 100 mol%, and optionally by subsequent partial or complete hydrolysis of the units of the monomer of formula (I) polymerized to form the polymer P to form a primary amino group or an amidino group, wherein the proportion of water is at least 75 wt% based on the spray solution or spray suspension.)