WO2020140736A1 - 造纸的方法 - Google Patents
造纸的方法 Download PDFInfo
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- WO2020140736A1 WO2020140736A1 PCT/CN2019/125461 CN2019125461W WO2020140736A1 WO 2020140736 A1 WO2020140736 A1 WO 2020140736A1 CN 2019125461 W CN2019125461 W CN 2019125461W WO 2020140736 A1 WO2020140736 A1 WO 2020140736A1
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- the invention relates to the technical field of papermaking.
- the mechanism is continuous on the paper machine, diluting the pulp suitable for the paper quality to a certain concentration with water, dewatering initially in the wire part of the paper machine to form a wet paper sheet, then dewatering by pressing, and then drying into paper.
- the frame with bamboo curtain, polyester net or copper net is used to copy the fibers dispersed in water into wet paper sheets, which are dehydrated by pressing, and then dried or dried into paper.
- the biggest difference between machine-made and hand-made paper is that, because hand-made paper is manually beaten, the fibers in the pulp are well preserved; machine-made paper is beaten by machines, and the pulp fibers are broken. This makes handmade paper much better than machine-made paper in toughness.
- the mechanism paper has a pulp web speed difference, resulting in uneven distribution of fibers in the vertical and horizontal directions, and handmade paper does not have uneven distribution of fibers in the vertical and horizontal directions, which is particularly reflected on calligraphy and painting paper (such as rice paper).
- the existing papermaking technology In order to use white paper, the existing papermaking technology generally uses the chemical method of bleaching. The product of this method seriously affects the environment, and a large number of chemical agents are used in paper manufacturing. The use of paper is not safe and environmentally friendly, which is easy to harm. The user's physical and mental health, and the existing paper-making technology adopts the process of reacting in water in order to distribute the fiber evenly, requiring a large amount of water resources, causing waste of water resources, and its products have a serious impact on the environment.
- the purpose of the present invention is to provide a papermaking method that can save water resources and is environmentally friendly.
- step E coloring the wet paper sheet to change its surface to the desired color.
- the composition ratio of the raw materials for adjusting the paper manufacturing described in step C includes modulation: the mass content of cellulose is 40%-95%, the mass content of hemicellulose is 2.5%-20%, and the mass content of lignin It is 0-30%, the mass content of the filler is 0-35%, the mass content of the prepared binder is 0-10%, and the average fiber length is 0.5-5 mm.
- the viscosity of the gelatinous dough described in step C is 50-1000 Pa ⁇ s.
- step D includes:
- the gelatinous dough passes through the above-mentioned gap to form a wet paper sheet, and the humidity of the wet paper sheet is 50% to 70%.
- step E includes:
- step F is one or a combination of baking dehydration, press dehydration, and air drying dehydration; the moisture of the wet paper sheet is dehydrated to 5% to 8% to form a dry paper sheet.
- step G includes:
- the preparation of the average fiber length compare the average fiber length of the fiber raw material with the set average fiber length after step B, and then add relatively long fibers or relatively short fibers to the fiber raw material to achieve the set average fiber length.
- the pulping method used in step A includes: mechanical energy pulping, chemical and thermal energy pulping, and mechanochemical comprehensive treatment pulping.
- step D is a tablet press.
- the fiber raw material in step A is one of stem fibers, bast fibers, seed wool fibers, and wood fibers, or a combination thereof.
- the screening method used in step B is one of a screen filtering screening method and a gravity filtering method or a combination thereof.
- step C is one of unidirectional stirring, multidirectional stirring, stranded stirring, or a combination thereof.
- the prepared adhesive is one of natural adhesive, synthetic adhesive, or a combination thereof.
- the colored adhesive is one of natural adhesive, synthetic adhesive, or a combination thereof.
- the invention does not require paper pulp to react in water, saves a lot of water resources, not only has high working efficiency, but also saves energy and protects the environment.
- Figure 1 is a flowchart of a preferred embodiment of the present invention
- step C is a flowchart of step C of the preferred embodiment of the present invention.
- step D of the preferred embodiment of the present invention is a flowchart of step D of the preferred embodiment of the present invention.
- step E is a flowchart of step E of the preferred embodiment of the present invention.
- FIG. 5 is a flowchart of step G of the preferred embodiment of the present invention.
- a papermaking method includes the following steps:
- the above diameter is not greater than the gap between two parallel rollers placed in the tablet press. It can be adjusted according to different paper types.
- the thickness of the finished paper affects the maximum diameter of particles and filaments that can be accepted during the crushing process of the fiber raw material.
- the fiber raw material is composed of long fibers and short fibers, the length of the long fibers is 2 to 5 mm, and the length of the short fibers is 0.5 to 2 mm.
- the pulping method in step A includes: mechanical energy pulping, chemical and thermal energy pulping, and mechanochemical comprehensive treatment pulping.
- mechanical energy is used for pulping, and the fiber raw material is processed by a grinder.
- the processed fiber raw material has better hydrophilicity.
- the fiber raw material described in step A is one or a combination of stem fibers, bast fibers, seed wool fibers, and wood fibers.
- the screening method used is a screen filtration screening method or/and gravity filtration method.
- the composition ratio of the raw materials used to adjust the paper in step C includes modulation: the mass content of cellulose is 40%-95%, the mass content of hemicellulose is 2.5%-20%, and the mass content of lignin is 0- 30%, the mass content of the filler is 0-35%, the mass content of the prepared binder is 0-10%, and the average fiber length is 0.5-5 mm.
- the viscosity of the gelatinous dough described in Step C is 50 to 1000 Pa ⁇ s.
- starch and protein are preferably used as preparation binders to reduce the use of chemical reagents, and the paper produced will not affect the health of users, and is safe and environmentally friendly.
- Modulation of average fiber length Compare the average fiber length of the fiber raw material with the set average fiber length after step B, and then add relatively long fibers or relatively short fibers to the fiber raw material to achieve the set average fiber length.
- the purpose of adjusting the cellulose ratio of the mixture is achieved by adding cellulose, filler, hemicellulose, and lignin.
- the content of short fibers is also adjusted according to actual needs. A high proportion of long fibers will increase the toughness of the entire paper.
- fibers that can be used as additives are: polyester fiber, viscose fiber, acrylic fiber, cotton fiber, etc.
- the stirring described in step C is one or a combination of unidirectional stirring, multidirectional stirring, and twisted stirring.
- the invention adopts the method of forward and reverse reciprocating stirring and then twisting and stirring of the high-speed mixer, so that the fibers and the adhesive are evenly distributed and interwoven, without the need to react in water, saving a lot of water resources, not only the work efficiency is high, but also Energy saving and environmental protection.
- step C includes:
- the prepared binder is made of materials including starch and protein.
- the mass ratio of the long fiber, short fiber and prepared binder is 2:5:1; the length of the long fiber is 2-5 mm, and the length of the short fiber It is 0.5 ⁇ 2mm.
- the paper raw materials are fully stirred to form a gelatinous dough, and the viscosity of the gelatinous dough is 50-1000 Pa ⁇ s.
- the prepared adhesive is a natural adhesive or/and a synthetic adhesive.
- Base material adhesives mainly include original (natural) starch, dextrin, casein, and now chemically synthesized and environmentally friendly various water-based latexes. Widely used in color boxes, cigarette packs, paper bags, gift boxes, hardcover boxes and various handmade boxes, as well as wooden furniture.
- Natural binders substances derived from nature. Including biological adhesives such as starch, protein, dextrin, animal glue, shellac, hide glue, rosin, etc.; also including mineral adhesives such as asphalt.
- Synthetic adhesive mainly refers to synthetic materials, including inorganic adhesives such as water glass, and organic adhesives such as synthetic resin and synthetic rubber.
- Water-soluble adhesives Adhesives using water as a solvent, mainly starch, dextrin, polyvinyl alcohol, carboxymethyl cellulose, etc.
- Solvent-based adhesive an adhesive that is insoluble in water and soluble in a certain solvent. Such as shellac, butyl rubber, etc.
- the filling material can be selected from kaolin, calcium carbonate, talc, titanium dioxide, etc. Filling on the one hand can reduce costs, on the other hand is to improve the properties of paper products.
- the content of filler in paper raw materials is 0 to 35%.
- step D includes:
- the gelatinous dough passes through the above-mentioned gap to form a wet paper sheet (cloth), and the humidity of the wet paper sheet is 50% to 70%.
- the color ink or color adhesive is usually white.
- the nozzle coating method is used: the nozzle is filled with white ink or white adhesive; the nozzle sticks the white ink or white The mixture is sprayed onto the surface of the cloth (wet paper sheet), and the surface color of the cloth (wet paper sheet) becomes the desired white.
- the colored adhesive in this embodiment is a natural adhesive or/and a synthetic adhesive.
- the nozzle is filled with white ink or white adhesive. It is preferred to use white starch adhesive for spraying on the surface, which is healthier and lower cost. For some application scenarios that do not require white, this spraying process can be omitted.
- the whiteness can be selected according to the purpose.
- the whiteness of books and periodicals paper is 55%-75%
- the whiteness of newsprint is 45%-52%
- the whiteness of offset color printing paper is 77%-87%
- the whiteness of color printing coated paper The maximum requirement is 80% to 85%.
- the dehydration method is one or a combination of baking dehydration, press dehydration, and air drying dehydration; it is formed by dehydrating the humidity of the wet paper sheet to 5% to 8% Dry paper sheet.
- step G includes:
- the fiber raw materials are crushed into particles with an average diameter of less than 1000 ⁇ m and filaments with a diameter of 1 to 1000 ⁇ m; After the physical selection of the fiber raw materials, to remove impurities and debris; according to the actual output demand and the actual fiber content of the raw materials, by adding cellulose, filler, hemicellulose, lignin to achieve the modulation of the fiber mixture
- the purpose of the element ratio is also to adjust the ratio of the content of long fibers and short fibers according to actual needs. A high ratio of long fibers will improve the toughness of the entire paper.
- the fiber and the preparation adhesive are evenly distributed and interweaved by the forward and reverse reciprocating stirring of the high-speed mixer and then the twisting and stirring method, and then the gelatinous dough is formed.
- the method of the invention is simple, and the surface of the produced colored paper is sprayed or printed with white adhesive or white ink, which becomes a generally accepted white color.
- the invention does not require paper pulp to react in water, saves a lot of water resources, not only has high working efficiency, but also saves energy and protects the environment.
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Abstract
一种造纸方法,包括以下步骤:将纤维原材料粉碎成平均直径小于1000μm的颗粒和直径为1~1000μm的丝状物;将粉碎后的纤维原材料进行物理筛选,剔除其中的杂质和杂物;调制造纸的原材料的成分配比并搅拌均匀形成胶状面团;将胶状面团挤压穿过两个平行滚轴间的缝隙形成湿纸页;将湿纸页脱水形成干纸页;对干纸页进行裁切和废料剪切。
Description
本发明涉及造纸技术领域。
现有的造纸技术。机制是在造纸机上连续进行,将适合于纸张质量的纸浆,用水稀释至一定浓度,在造纸机的网部初步脱水,形成湿的纸页,再经压榨脱水,然后烘干成纸。手工则用有竹帘、聚酯网或铜网的框架,将分散悬浮于水中的纤维抄成湿纸页,经压榨脱水,再行晒干或烘干成纸。机制和手工两种造出来的纸最大区别在于,由于手工纸采用人工打浆,纸浆中的纤维保存完好;机制纸采用机器打浆,纸浆纤维被打碎。使得手工纸在韧性拉力上大大优于机制纸。机制纸存在浆网速差导致纤维纵横向分布不均,手工纸不存在纤维纵横向分布比例不均,特别体现在书画用纸上(比如:宣纸)。
现有的造纸技术为了用到白色的纸张,普遍采用了漂白这一化学方法,该方法的产物严重影响了环境,而且在纸张制造中采用了大量的化学制剂,纸张使用不够安全环保,容易危害使用者的身心健康,同时现有的造纸技术为了让纤维均匀的分布,而采用了在水中反应的过程,需要大量的水资源,造成水资源的浪费,并且其产物对环境造成了严重影响。
发明内容
本发明的目的在于提供一种可节约水资源、环保的造纸的方法。
本发明的目的可以这样实现,设计一种造纸的方法,包括以下步骤:
A、将纤维原材料粉碎成平均直径小于1000μm的颗粒和直径为1~1000μm的丝状物;
B、将粉碎后的纤维原材料进行物理筛选,剔除其中的杂质和杂物;
C、调制造纸的原材料的成分配比并搅拌均匀形成胶状面团;
D、将胶状面团挤压穿过两个平行滚轴间的缝隙形成湿纸页;
F、将湿纸页脱水形成干纸页;
G、对干纸页进行裁切和废料剪切。
进一步地,还包括步骤E、对湿纸页进行着色,将其表面变成所需的颜色。
进一步地,步骤C中所述的调制造纸的原材料的成分配比包括调制:纤维素的质量含量为40%~95%、半纤维素的质量含量为2.5%~20%、木质素的质量含量为0~30%、填料的质量含量为0~35%、调制粘合剂的质量含量为0~10%、纤维平均长度为0.5~5毫米。
进一步地,步骤C中所述的胶状面团的粘度为50~1000Pa·s。
进一步地,步骤D包括:
D1、设置两组平行放置的机器滚轴;
D2、把胶状面团从两个平行放置的滚轴之间的缝隙挤压出去,缝隙的间距为1μm~5000μm;
D3、胶状面团穿过上述缝隙后形成湿纸页,湿纸页的湿度为50%~70%。
进一步地,步骤E包括:
E1、准备着色的油墨或着色粘合剂;
E2、将着色的油墨或着色粘合剂印刷或喷涂到湿纸页上而形成湿纸页的外在颜色。
进一步地,步骤F中所述的脱水方法为烘烤脱水、压榨脱水、晾晒脱水中的之一或者其组合;把湿纸页的湿度脱水至5%~8%而形成干纸页。
进一步地,步骤G包括:
G1、将干纸页根据实际需求的尺寸进行修剪裁切;
G2、将裁切后的纸张的多余的边缘裁切掉。
进一步地,纤维平均长度的调制:把经过步骤B后纤维原材料的纤维平均长度与设定纤维平均长度比较,然后向纤维原材料中添加相对长纤维或者相对短纤维而达到设定的纤维平均长度。
进一步地,步骤A所采用的制浆方法包括:机械能制浆、化学品和热能制 浆、机械化学综合处理制浆。
进一步地,步骤D中所采用的设备为压片机。
进一步地,步骤A中所述的纤维原材料为茎干纤维类、韧皮纤维类、种毛纤维类、木材纤维类之一或者其组合。
进一步地,步骤B所采用的筛选方法为滤网过滤筛选法、重力过滤法之一或者其组合。
进一步地,步骤C中所述的搅拌为单方向搅拌、多方向搅拌、绞制搅拌之一或者其组合。
进一步地,调制粘合剂为天然粘合剂、合成粘合剂之一或者其组合。
进一步地,着色粘合剂为天然粘合剂、合成粘合剂之一或者其组合。
本发明无需纸浆在水中反应,节约了大量的水资源,不仅工作效率较高,而且还节能环保。
图1是本发明较佳实施例的流程图;
图2是本发明较佳实施例之步骤C的流程图;
图3是本发明较佳实施例之步骤D的流程图;
图4是本发明较佳实施例之步骤E的流程图;
图5是本发明较佳实施例之步骤G的流程图。
以下结合实施例对本发明作进一步的描述。
如图1所示,一种造纸的方法,包括以下步骤:
A、将纤维原材料粉碎成平均直径小于1000μm的颗粒和直径为1~1000μm的丝状物。
上述直径不大于压片机中两个平行放置的滚轴之间的缝隙间距就好,根据不同的纸张类型可调。成品纸张的厚度影响了在纤维原材料的粉碎过程中所能够接受的颗粒和丝状物的最大直径。
本实施例中,所述纤维原料由长纤维和短纤维混合而成,长纤维的长度为2~5mm、短纤维的长度为0.5~2mm。步骤A中的制浆方法包括:机械能制浆、化学品和热能制浆、机械化学综合处理制浆。本实施例采用机械能制浆,用磨碎机处理纤维原料,处理后的纤维原料亲水性较佳。
步骤A中所述的纤维原材料为茎干纤维类、韧皮纤维类、种毛纤维类、木材纤维类之一或者其组合。
B、将粉碎后的纤维原材料进行物理筛选,剔除其中的杂质和杂物;杂物就是尺寸不合格的部分。杂质就是材质不合格的部分,比如砂石泥土等。所采用的筛选方法为滤网过滤筛选法或/和重力过滤法。
C、调制造纸的原材料的成分配比并搅拌均匀形成胶状面团。
步骤C中所述的调制造纸的原材料的成分配比包括调制:纤维素的质量含量为40%~95%、半纤维素的质量含量为2.5%~20%、木质素的质量含量为0~30%、填料的质量含量为0~35%、调制粘合剂的质量含量为0~10%、纤维平均长度为0.5~5毫米。步骤C中所述的胶状面团的粘度为50~1000Pa·s。
在调制的过程中优选淀粉、蛋白质作为调制粘合剂,以降低对化学试剂的使用,生产出来的纸张不会影响使用者的健康,安全环保。
纤维平均长度的调制:把经过步骤B后纤维原材料的纤维平均长度与设定纤维平均长度比较,然后向纤维原材料中添加相对长纤维或者相对短纤维而达到设定的纤维平均长度。
在调制的过程中,根据实际的产出需求和实际的原材料的纤维含量,通过添加纤维素、填料、半纤维素、木质素而达到调制该混合物的纤维素比例的目的,同时对于长纤维和短纤维的含量,也根据实际需求去调制其比例,长纤维比例高会提高整个纸张的韧性。
可以作为添加剂的纤维,举例如下:涤纶纤维、黏胶纤维、腈纶纤维、棉纤维等。
步骤C中所述的搅拌为单方向搅拌、多方向搅拌、绞制搅拌之一或者其组合。本发明采用高速搅拌机的正反往复搅拌然后绞制搅拌的方法,从而使纤维和粘合剂均匀的分布交织,无需在在水中反应,节约了大量的水资源,不仅 工作效率较高,而且还节能环保。
在一个实施例中,如图2所示,C步骤包括:
C1、调制造纸的纤维原材料的成分配比。
C2、调制粘合剂采用包括淀粉和蛋白质材质制成,所述长纤维、短纤维以及调制粘合剂的质量比为2:5:1;长纤维的长度为2~5mm、短纤维的长度为0.5~2mm。
C3、纸张原料充分搅拌均匀后形成胶状面团,胶状面团的粘度为50~1000Pa·s。
调制粘合剂可有多种选择,如基材料粘合剂、天然粘合剂、合成粘合剂、水溶型粘合剂、溶剂型粘合剂等。本实施例中调制粘合剂为天然粘合剂或/和合成粘合剂。
基材料粘合剂:主要包括原始(天然)的淀粉,糊精,酪蛋白和现在的化学合成而又环保的各种水性胶乳等。广泛应用于彩盒、烟包、纸袋、礼品盒、精装盒和各类手工盒,以及木器家私。
天然粘合剂:取自于自然界中的物质。包括淀粉、蛋白质、糊精、动物胶、虫胶、皮胶、松香等生物粘合剂;也包括沥青等矿物粘合剂。
合成粘合剂:主要指人工合成的物质,包括水玻璃等无机粘合剂,以及合成树脂、合成橡胶等有机粘合剂。
水溶型粘合剂:用水作溶剂的粘合剂,主要有淀粉、糊精、聚乙烯醇、羧甲基纤维素等。
溶剂型粘合剂:不溶于水而溶于某种溶剂的粘合剂。如虫胶、丁基橡胶等。
加填,填充料的材料有高岭土、碳酸钙、滑石粉、钛白粉等可选择。加填一方面可降低成本、另一方面是为了改善纸品的性质。填充料在纸张原料中的含量为0~35%。
D、将胶状面团挤压穿过两个平行滚轴间的缝隙形成湿纸页;
在一个实施例中,如图3所示,D步骤包括:
D1、设置两组平行放置的机器滚轴;
D2、把胶状面团从两个平行放置的滚轴之间的缝隙挤压出去,缝隙的间距 为1μm~5000μm;
D3、胶状面团穿过上述缝隙后形成湿纸页(布状物),湿纸页的湿度为50%~70%。
E、对湿纸页进行着色,将其表面变成所需的颜色。
E1、准备着色的油墨或着色粘合剂;
E2、将着色的油墨或着色粘合剂印刷或喷涂到湿纸页上而形成湿纸页的外在颜色。
着色的油墨或着色粘合剂常规选择白色,在一个实施例中,如图4所示,采用喷嘴涂布方式:喷嘴内装填白色的油墨或白色粘合剂;喷嘴将白色的油墨或白色粘合剂喷涂至布状物(湿纸页)的表面,布状物(湿纸页)的表面颜色变成所需白色。
也可以根据用户的实际对纸张表面颜色需求选择其它颜色。也可以采用原料的原色,而省略步骤E。
本实施例中着色粘合剂为天然粘合剂或/和合成粘合剂。
本实施例中,喷嘴内填充有白色油墨或白色粘合剂。优选的使用白色淀粉粘合剂用于喷涂在表面,更健康也成本更低。对于一些不需要白色应用场景,这一道喷涂的工序可以省略。
白色可根据用途选择白度,书刊纸白度要求为55%~75%,新闻纸要求白度为45%~52%,胶版彩印纸白度要求为77%~87%,对彩印铜版纸白度要求最高为80%~85%。
F、将湿纸页脱水形成干纸页;所述的脱水方法为烘烤脱水、压榨脱水、晾晒脱水中的之一或者其组合;把湿纸页的湿度脱水至5%~8%而形成干纸页。
G、对干纸页进行裁切和废料剪切。
在一个实施例中,如图5所示,G步骤包括:
G1、将干纸页根据实际需求的尺寸进行修剪裁切;
G2、将裁切后的纸张的多余的边缘裁切掉。
工作时,首先通过机械能制浆、化学品和热能制浆、机械化学综合处理制浆的方法,将纤维原材料粉碎成平均直径小于1000μm的颗粒和直径为1~1000 μm的丝状物;将粉碎后的纤维原材料进行物理筛选,剔除其中的杂质和杂物;根据实际的产出需求和实际的原材料的纤维含量,通过添加纤维素、填料、半纤维素、木质素而达到调制该混合物的纤维素比例的目的,同时对于长纤维和短纤维的含量,也根据实际需求去调制其比例,长纤维比例高会提高整个纸张的韧性。调制完成后,通过高速搅拌机的正反往复搅拌然后绞制搅拌的方法使纤维和调制粘合剂均匀分布交织,而后形成胶状面团。
将胶状面团挤压穿过两个平行滚轴间的缝隙形成湿纸页;在喷嘴内填充白色的油墨或着色粘合剂,喷嘴将白色的油墨或着色粘合剂喷涂至湿纸页(布状物)的表面,从而把该湿纸页(布状物)的表面颜色变成白色或者其它颜色,而后将湿纸页脱水形成干纸页,最后对干纸页进行裁切和废料剪切。
本发明的方法简单,生产出来的有色纸张表面喷涂或者印刷白色的粘合剂或者白色油墨,变成了大家普遍接受的白色。本发明无需纸浆在水中反应,节约了大量的水资源,不仅工作效率较高,而且还节能环保。
Claims (9)
- 一种造纸的方法,其特征在于,包括以下步骤:A、将纤维原材料粉碎成平均直径小于1000μm的颗粒和直径为1~1000μm的丝状物;B、将粉碎后的纤维原材料进行物理筛选,剔除其中的杂质和杂物;C、调制造纸的原材料的成分配比并搅拌均匀形成胶状面团;D、将胶状面团挤压穿过两个平行滚轴间的缝隙形成湿纸页;F、将湿纸页脱水形成干纸页;G、对干纸页进行裁切和废料剪切。
- 根据权利要求1所述的造纸的方法,其特征在于:还包括步骤E、对湿纸页进行着色,将其表面变成所需的颜色。
- 根据权利要求1所述的造纸的方法,其特征在于,步骤C中所述的调制造纸的原材料的成分配比包括调制:纤维素的质量含量为40%~95%、半纤维素的质量含量为2.5%~20%、木质素的质量含量为0~30%、填料的质量含量为0~35%、调制粘合剂的质量含量为0~10%、纤维平均长度为0.5~5毫米。
- 根据权利要求1所述的造纸的方法,其特征在于:步骤C中所述的胶状面团的粘度为50~1000Pa·s。
- 根据权利要求1所述的造纸的方法,其特征在于,步骤D包括:D1、设置两组平行放置的机器滚轴;D2、把胶状面团从两个平行放置的滚轴之间的缝隙挤压出去,缝隙的间距为1μm~5000μm;D3、胶状面团穿过上述缝隙后形成湿纸页,湿纸页的湿度为50%~70%。
- 根据权利要求2所述的造纸的方法,其特征在于,步骤E包括:E1、准备着色的油墨或着色粘合剂;E2、将着色的油墨或着色粘合剂印刷或喷涂到湿纸页上而形成湿纸页的外在颜色。
- 根据权利要求1所述的造纸的方法,其特征在于,步骤F中所述的脱水方法为烘烤脱水、压榨脱水、晾晒脱水中的之一或者其组合;把湿纸页的湿度脱水至5%~8%而形成干纸页。
- 根据权利要求1所述的造纸的方法,其特征在于,步骤G包括:G1、将干纸页根据实际需求的尺寸进行修剪裁切;G2、将裁切后的纸张的多余的边缘裁切掉。
- 根据权利要求3所述的造纸的方法,其特征在于,纤维平均长度的调制:把经过步骤B后纤维原材料的纤维平均长度与设定纤维平均长度比较,然后向纤维原材料中添加相对长纤维或者相对短纤维而达到设定的纤维平均长度。
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