CN108699769B - 高吸收水性材料sat(高吸水性纸巾) - Google Patents
高吸收水性材料sat(高吸水性纸巾) Download PDFInfo
- Publication number
- CN108699769B CN108699769B CN201680079371.0A CN201680079371A CN108699769B CN 108699769 B CN108699769 B CN 108699769B CN 201680079371 A CN201680079371 A CN 201680079371A CN 108699769 B CN108699769 B CN 108699769B
- Authority
- CN
- China
- Prior art keywords
- sap
- web
- dispersion
- poly
- salt solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/22—Agents rendering paper porous, absorbent or bulky
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28023—Fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28028—Particles immobilised within fibres or filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
- B01J20/3225—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating involving a post-treatment of the coated or impregnated product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
- B01J20/327—Polymers obtained by reactions involving only carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3291—Characterised by the shape of the carrier, the coating or the obtained coated product
- B01J20/3293—Coatings on a core, the core being particle or fiber shaped, e.g. encapsulated particles, coated fibers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
- D21H17/43—Carboxyl groups or derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Paper (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
一种湿法生产高吸水性材料的方法,包括:通过加入强酸或强碱,形成含有浓度为0.01‑4.5N离子盐,pH值为0‑6.0或8.0‑14.0的盐溶液;将高吸水性聚合物组分(SAP)分散在所述盐溶液中,其中在酸性盐溶液的情况下,所述超吸水性聚合物(SAP)组分选自含有至少一种未完全中和的酸性树脂的聚合物,和/或在碱性盐溶液的情况下,所述超吸水性聚合物(SAP)组分选自含有至少一种未完全中和的碱性树脂的聚合物;通过在真空抽吸下在SAP分散体的网筛带沉积部分上分层和抽吸来实现第一纸幅;用碱性溶液冲洗所述纸幅直到酸性盐溶液中SAP分散体酸度达到所需中和水平,或用酸性溶液冲洗所述纸幅直到碱性盐溶液中SAP分散体碱度达到所需中和水平;用水和吸力冲洗纸幅,然后干燥所述纸幅。pH和盐浓度之间的关系为,使得SAP中的吸水率等于或小于约30gH2O/gSAP。根据本发明所述的吸收性材料用于生产纸张和厨房用纸;卫生纸和面巾纸;吸收性卫生用品:婴儿尿布、女性卫生用纸、内裤衬垫、失禁成人尿布、失禁用户床垫和手术室床垫、腋下衬垫;用于食品工业的纸层或吸水垫层;用于吸收肉类、鱼类或蔬菜的排液的食品容器;宠物用纸层或吸水垫层;用于棺材的吸收纸或吸水垫层;用于吸收渗出液的医疗产品。
Description
技术领域
本发明涉及一种湿法生产高吸水性材料的方法。具体地,该方法涉及生产含有高吸水性聚合物(SAP)的纸幅或多层纸幅,所述高吸水性聚合物选自含有至少一种未完全中和的酸性树脂的聚合物或含有至少一种未完全中和的碱性树脂的聚合物,或生产多纸幅,其中多纸幅交替使用未完全中和的酸性树脂的SAP和碱性树脂的SAP。
背景技术
“薄纸”通常用于吸收液体,薄纸类产品例如为吸水式厨房毛巾卷、一次性面巾纸、包装吸水垫、卫生纸、餐巾纸、女性卫生巾、婴儿尿布或失禁成人尿布等。这些材料的基本性能是吸收性、比重、厚度、比容、亮度、拉伸强度、外观和舒适度,舒适度例如粗糙度和/或柔软性。
薄纸主要采用湿法方法在存在或不存在化学粘结剂的情况下在造纸设备上进行生产,以及在类似设备中获得的某些湿法非织造布或非织造布(NW),但是除了纤维素纤维之外,还可以使用其他纤维。
所述薄纸和湿法非织造布的一些实质性改进是通过机械处理和热处理获得的,其中提到的机械处理是由蠕变和压花所造成的,而热处理主要用于通过空气干燥(TAD)来进行干燥处理,这改善了薄纸或湿法非织造布诸如柔软性、蓬松性和吸收能力的性能。吸收能力这一特征在使用这类材料时是至关重要的。作为自由吸收,即通过浸渍和滴落而没有施加压力,薄纸的吸收限度约为每克材料吸收10至16克的水。
因此,为了增强液体吸收能力,以及节省消耗和能源成本,由于生产薄纸和湿法非织造布要消耗大量能量,因此需要对所用的材料和生产技术进行创新。
此外,由于使用所述材料的产品为单一的或有限使用的类型,因此要考虑的另一方面是制造具有新型的生态可持续性处置的产品。
因此,对于这些材料来说,将其他材料与吸收能力相结合的可能性非常有意义,所述吸收能力比纤维素纤维,例如高吸水性聚合物(SAP)的吸收能力高一个或两个数量级,与那些例如用于婴儿尿布或失禁成人尿布的材料相同或相似,其自由吸收率可达140-150克/克或更高。
将SAP与造纸设备以及湿法非织造设备的混合结合时出现的主要问题之一是SAP,即使在非常低的浓度下吸收和凝胶化大量的水,也会由于内部形成庞大的凝胶状的块状物而导致设备实际无法使用。因此,SAP的凝胶部分吸收的大量水会产生巨大的技术问题和经济问题,其中技术问题与操作次数和机械速率有关,而经济问题则主要有关于干燥成本,这两者原因使得其无法应用于现有技术中。
为此目的,进行了多次尝试,但是结果都不理想。专利WO2005098134A1中描述了虽然是线下生产的具有突出效果的少数尝试中的其中一个尝试,其中具有可变粒度测定的粉末状的SAP颗粒以层压板的形式置于两层薄纸之间,因此纤维素纤维中未夹带SAP颗粒。因此,这导致材料易于分层,特别是在吸收水之后,更容易出现分层,使得由于使用分散在环境中的中等细粉末,将有限量的SAP至少与工作环境的安全问题相结合。
专利EP 0359615A1描述了一种在干燥步骤之前在湿纸巾的纸幅上施加SAP的固体干燥颗粒,然后用干燥纸幅(例如薄纸或非织造布等)涂覆并随后压制和干燥的方法。
专利EP 0437816A1描述了一种生产湿法非织造布非织造布的工艺,该工艺是将SAP颗粒加入水中的纤维分散体中或低醇含量的水溶液(如甲醇或乙醇)中,以降低SAP吸收能力。通过干燥,水和/或乙醇蒸发,SAP恢复其吸收能力。
专利US 5516585描述了一种纤维素纸幅,其中纤维素纤维至少部分地涂覆有热熔粘合剂,在纸幅成形和压缩之前,在其上粘附有SAP的固体颗粒。
专利US 5607550描述了由SAP纤维和吸收性较低纤维的混合物组成的湿法非织造布,该湿法非织造布通过由在纸幅成形之前将干燥的SAP纤维添加到其它吸收性较低的纤维的水分散体中的方法而制得。变体包括在水溶性有机液体中制备干燥的SAP纤维的分散体,在该有机液体中所述SAP纤维不会溶胀,然后在纸幅成形之前再与其它吸收性较低的纤维的水分散体混合。
专利US 5795439描述了一种通过在0℃至25℃的低温的适当条件下在水介质中混合纤维和SAP来生产湿法非织造布的工艺,其抑制了SAP的可溶胀性。水介质还可以包含抑制SAP溶胀的化合物,例如选自氯化钠(NaCl)、溴化钠(NaBr)、氯化钾(KCl)和溴化钾(KBr)的盐,盐的浓度范围为1wt%至6wt%。
专利US 5997690描述了通过首先制备这种SAP的含纤维和颗粒(在使用前具有小于250微米的尺寸)的分散体来生产浸渍有对离子敏感的SAP的湿法非织造布的工艺。然后将所述分散体与盐溶液混合,随后在真空抽吸下沉积在过滤网筛带上以形成纸幅,在用水冲洗该纸幅以除去过量的盐后,该纸幅最终得以干燥。
专利US 6056854描述了一种用于生产湿法NW的方法,其中纤维结构浸渍有SAP颗粒。这种生产将基于当SAP与水或水溶液接触时利用SAP的溶胀动力学。事实上,所述专利声称在使SAP与水溶液接触并后的5秒内,可以通过简单地将SAP颗粒添加到纤维水溶液中并且在湿法NW工艺机器的真空吸附沉积部分下将这样的混合物转移到网筛带上,并允许在所述SAP与水接触后的45秒内使所述纸幅抵达所述干燥区域的方式来生产这类材料。
专利US 6979386描述了一种用于形成薄纸的方法,该种方法通过以下步骤实施:通过在造纸设备的流浆箱上混合纤维状纤维素材料和预凝胶化的SAP颗粒(其吸收能力的至少30%),以获得含有0.1wt%至约5wt%SAP的纤维素纸幅,最后将该纤维素纸幅进行压制并且至少部分干燥。
专利US2003/0127202A1描述了一种用于离线生产复合多纸幅材料的方法,该复合多纸幅材料包括至少两个薄纸纸幅,所述薄纸纸幅通过其间插入的SAP纤维纸幅连接。SAP纤维通过粘合剂粘附到薄纸纸幅的内侧。
专利US2008/0115898A1描述了一种用于生产薄纸或湿法NW的单层或多层纸幅的离线方法,其中SAP粉末被分布在第一预粘附和压花纸幅上,如果需要,所述第一预粘附和压花纸幅可涂覆有第二纸幅。
专利WO 2005098134 A1和US 2005/0224200 A1描述了一种用于生产多纸幅材料的离线方法,其中至少两个预压花纸幅,其中至少一个预压花纸幅用水基粘合剂进行处理,一层SAP颗粒在其层压之前分布在其粘合剂表面上。
WO02/100032涉及生产通过组合未被中和的酸性和碱性的吸水树脂颗粒而形成的连续纸张。通过使用湿法、干法或混合干湿法,优选使用干气流成纸幅工艺或通过在热压下挤出进行湿式混合工艺,使用生产纸张的设备进行生产。由于粒状SAP容易粉碎,因此通过含有SAP含量>60%的干气流成纸幅工艺很难生产具有低比重(<200g/m2)的纸张。为了克服这些缺点,使用了粘合剂、胶黏剂或施胶剂。
由这种专利生产的材料用于使与它们接触的液体脱盐,进而以盐的形式转化,使它们具有吸水性,而对纯净的弱盐水则没有显示出显著的吸收能力。
WO03/092757涉及用SAP、增塑组分和其它任选成分的合适混合物来生产吸收材料片,这些吸收材料片在温度、压力下经受一段时间的加热和加压,以避免SAP和增塑剂之间的任何反应。
很明显,需要开发具有用于具有高吸收能力和合适机械强度的材料的生产方法,避免使用昂贵的离线处理或高温挤出,但该生产方法可以使用其中已经用到已知的和廉价的技术的湿法工艺,以制备薄纸或湿法非织造布。
发明内容
本发明提出使用高吸水性聚合物(SAP)产品以显著提高纸制或湿法非织造布产品的吸收能力。
高吸水性聚合物(SAP)产品多年来在各种应用中为人们所熟知,从用于婴儿尿布和成人失禁的尿布以及用于女性卫生用品到其他一次性产品的应用,其中体液的吸收是关键因素。
本发明允许将任何形式的规则的和不规则形式的SAP,例如颗粒、粉末、纤维、薄片或珠子等形式的SAP与包裹在薄纸或湿法NW的纤维结构内的含量高达100%的内容物相结合,但是其到目前为止上述方法利用现有技术在不产生可能的二次安全问题及用类似于或略高于同样生产纸张或湿法非织造布工艺所需要的干燥成本的情况下是难以实施的。此外,由于吸收能力的显著增强,它允许生产和销售目前难以生产或不可能生产的产品,或者生产和销售需要使用通过连接两层或更多层薄纸而在离线纸生产中制造的复合材料的产品,其中薄纸只有一层或多层SAP,从而在生产/转换成本方面也获得了益处。
有利地,SAP纤维可完全替代纤维素纤维和/或其他天然、人造和合成纤维。
在一个方面,本发明涉及一种湿法生产如权利要求1所述的高吸水性材料的方法。该方法设想通过将强酸或强碱以及分散体添加到高吸水性聚合物(SAP)组分的盐溶液中来形成含有浓度为0.01-4.5N的离子盐和pH值为0至6.0或8.0至14.0的盐水溶液,其中在酸盐溶液的情况下,所述超吸水性聚合物(SAP)组分选自含有至少一种未完全中和的酸性树脂的聚合物,而在碱盐溶液的情况下,所述超吸水性聚合物(SAP)组分选自含有至少一种未完全中和的碱性树脂的聚合物。
pH和盐浓度的关系为使得SAP中的吸水率等于或小于约30.00gH2O/gSAP。
因此,第一纸幅的实施通过以下方式执行,即在真空抽吸下将第一纸幅沉积及分层堆放到SAP分散体的网筛带沉积上,然后用碱性溶液冲洗该纸幅,以产生酸性盐溶液中的SAP分散体,或者用酸性溶液冲洗该纸幅,以产生碱性盐溶液中的SAP分散体,以再次增强SAP的中和水平,从而提高其吸收能力。
最后,可能用水冲洗纸幅(用于除去盐残留物)并在真空下抽吸和干燥纸幅。
该方法的变体设想使用适当地减少盐化的SAP,使得一旦SAP放入盐溶液中,它将产生预期的pH。
根据优选的实施例,高吸水性聚合物(SAP)组分的盐溶液中的分散体还包括天然或人造纤维素纤维和/或人造或合成纤维的分散体,所述分散体适合于表面一起变湿或者用表面活性剂整体进行处理,且根据所用的SAP的类型,在PH未0至6.0或8至14.0的情况下在纤维和SAP的盐水溶液中形成分散体。
根据优选的实施例,该方法设想通过重复纸幅形成的步骤来形成接下来的多个层,使用相同的SAP和/或优选通过阴离子SAP的分层获得的第一纸幅,阳离子SAP的第二纸幅的分层以及最后的干燥来形成接下来的多个层。
分散在盐溶液中的SAP优选通过颗粒、粉末、纤维、薄片或珍珠单独或作为其混合物形成。
本发明进一步设想将根据本发明的方法所获得的吸收性材料应用于生产纸张和厨房用纸、卫生纸和面巾纸、吸收性卫生用品例如婴儿尿布和失禁成人尿布、医用/卫生湿巾、针对失禁用户的床和手术用床的床垫罩以及腋下衬垫等。
附图说明
图1和图2分别显示了表1和表2中每克SAP或SAF的H2O的吸收率。
具体实施方式
本发明基于以下观察结果:目前市场上可买到的SAP,优选取决于其官能团的盐化程度而出现盐化70-80%的SAP,无论它们是阴离子的例如聚丙烯酸酯,还是阳离子例如聚乙烯胺,随着盐化程度的减少显示出减少的吸收值,直到达成完全酸性的碱性形式到最小的小于2-4gH2O/gSAP;通过比较,纯纤维素的吸收率接近于4-6gH2O/g纤维素。
这种处于完全酸性或碱性形式或甚至在不同的盐化水平下的SAP可以直接从以预期的水平的盐化的SAP获得,或通过直接将在70-80%的盐度下的这类市场上可买到的材料分散在碎浆机或混合罐中来获得,其中纤维素纤维以小于2-4%的浓度分散在水中或盐溶液中,其中该浓度适合于转移到造纸设备上,且适合于根据所用的SAP类型来将其酸化或碱化到预期的PH值。以这种方式,SAP处于所需的低凝胶化水平并且没有凝胶状的块状物,取决于所用的SAP其形成由盐溶液和/或pH<6或>8而停止,且SAP均匀地沉积在造纸机的真空网筛带沉积部分上。根据具有纤维素纤维的优选实施例,纤维或SAP颗粒的混合物在适当的最小盐化程度下可以同正常生产纸张或湿法非织造布中一样转移到真空沉积部分下的网筛带上。
根据一个优选的实施例,实现其完全酸化或碱化可能是不太方便的,但是却足以实现最小程度的盐化,该最小程度的盐化会导致所述SAP吸收少于30gH2O/gSAP,而不会导致形成大量凝胶化物质,也不会影响结合有SAP的薄纸或湿法NW的生产率、可加工性、质量及干燥成本。
获得SAP颗粒的最大吸收能力的合适的SAT(超强吸水性纸巾)材料所需的下一步骤涉及在网筛带形成上处理(在抽吸下)含有酸性或碱性SAP颗粒的湿纸张纸幅。通过分别提供氢氧化钠(NaOH)溶液或氯化氢(HCI)溶液,上述步骤发生在形成纸幅和将纸幅转移到干燥筒之间的间隙内的网筛带沉积部分上,以使SAP再次成盐(至期望的盐化程度)同时使SAP的吸收能力再次提升。
由于SAP的凝胶化动力学相对于再盐化动力学和造纸机或湿法非织造布机器的加工速率较慢,因此SAP在那一刻没有经历大量的水的凝胶化,从而基本保持干燥成本不变。
用于获得具有不同的组分和不同层次的纤维素纤维(无论它们是原生纤维、再生纤维还是回收的纤维)的薄纸或者湿法NW以及用于实现机器的高速率的一些设备通过流浆箱使用更多碎浆机(每个都有其特定的纤维混合物)以及同时和共同层状地形成到真空下网筛带上。在这样的设备中,可以将有或没有纤维素纤维的SAP放入例如碎浆机中的盐溶液中,并根据SAP的性质适当地酸化或碱化,然而在另一种碎浆机中,放入具有氢氧化钠(NaOH)或氯化氢(HCI)的纤维素纤维,其中氢氧化钠(NaOH)溶液或氯化氢(HCI)的浓度可以分别中和其连接到网筛带沉积部分期间的之前碎浆机的内容物的酸性和碱性。这使得可以取消或减少对上述再盐化的随后的碱性或酸性处理的需要或浓度。
发明人根据(SAP的)UVAT-基于真空吸收测试的方法依据pH和盐度量化了SAP的凝胶化动力学。
UVAT的目的在于通过利用真空下的抽吸的过滤,在不同的pH值和盐度以及其他条件下,例如在液体样品的温度下以及其他类型的溶剂例如甲醇或乙醇等的存在下,测量由SAP(高吸水性聚合物)所吸收的液体的保留,其中真空再现了通常用于制造纸张或湿法非织造布的技术中所用的条件。
使用的设备包括玻璃烧杯、真空漏斗型布氏、滤纸Edero ltype 3/N,真空瓶Erlenmeyer、真空泵。
测量通过精确度为0.01g的分析天平,精确度为0.01pH的pH计,电导率计进行,其中电导率计的测量范围为0.01μS/cm至1000mS/cm,这对应于0.01mg/l至600g/l的氯化钾(KCl)或470g/l的氯化钠(NaCl)的表观盐度。
(例如对于酸性SAP)制备具有以下特征的水溶液:
1.用于降低待测溶液pH的250ml浓度为0.5-1.0-1.5-2.0-2.5-3.0-3.5-4.0-4.5和5.0N的刻度烧瓶中的氯化氢(HCl)溶液
2.用于提高待测的非酸化溶液pH的100ml的刻度烧瓶中的2N氢氧化钠(NaOH)水溶液
3.用于待测试的每个盐度水平的10升刻度烧瓶中的0.00-0.025-0.05-0.10-0.15-0.30-0.75-1.50-3.0或4.5N氯化钠(NaCl)盐溶液
使用的方法如下:
-对于每个盐度水平,制备由每个待测pH水平的250ml玻璃烧杯组成的测试装置。
-对于每对烧杯,在分析天平上进行校准后,添加以下量之一:
0.0-0.50-1.0-1.50-2.0-2.50-3.0-3.50-4.0-4.50-5.0-5.50-6.0-6.5-7.0-7.5-9.0-11.0-15.0-20.0或25.0meq氯化氢(HCl)
或:0.5-1.0-1.5-2.0-2.5或3.0meq氢氧化钠(NaOH)
然后加入试验盐溶液,直至最终溶液的重量等于200.0g。
-仅对于一个烧杯,对于每对,然后添加1.00g的SAP,而另一个将用于在过滤步骤期间的清洗,以避免在该步骤期间SAP条件的任何变化。
-将含有SAP的烧杯搅拌至少2小时,以获得吸收的均匀性,然后测量溶液中存在的所有离子的pH和电导率或作为氯化钠(NaCl)的表观等效性的表观盐度,然后进行真空过滤。
-除了添加到溶液中的有效的氯化钠(NaCl)外,其他离子对于所用的氯化钠(NaCl)的规定浓度1.0/1.5的贡献也是至关重要的,且在这样的盐度之外变得无关紧要;因此,超出盐度1.5N,后者可以被认为等于所用氯化钠(NaCl)的规定浓度。由此获得的吸收的SAP减去1.00g所用的干燥SAP的净重将在PH和盐度的测量条件下给出SAP的吸收值。
表1显示了对于每种不同的NaCl浓度,H2O吸收为g/gSAP,其中SAP是根据Danson程序获得的高吸水性聚合物颗粒,产品类型DSorb A100-228(SAP)。
表1.1
表1.2
表1.3
类似地,表2显示了对于每种不同的NaCl浓度,H2O的吸收率为g/gSAF,其中SAF是由技术吸收剂类型111/6/10(SAF)生产的高吸水性纤维。
表2.1
表2.2
表2.3
图1和图2分别显示了表1和表2中每克SAP或SAF的H2O的吸收率,这些行根据侧面图例连接并调节具有相同盐度的值。由于某些行的数据被认为是冗余的,因此省略了表中某些行的数据。从这些图中可以注意到,在pH小于5.00-4.50的条件下,SAP或SAF中的吸水率小于10gH2O/gSAP或gH2O/gSAF。
根据本发明的方法使用一种设备来湿法生产纸张。特别是,湿法生产高吸水性材料的方法,包括:
a)通过加入强酸或强碱,形成浓度为0.01-4.5N离子盐,pH为0-6.0或8.00-14.00的盐水溶液;
b)将高吸水性聚合物(SAP)组分分散在盐溶液中,其中在酸性盐溶液的情况下,所述高吸水性聚合物组分选自含有至少一种未完全中和的酸性树脂,而在碱性盐溶液的情况下,所述高吸水性聚合物组分选自含有至少一种未完全中和的碱性树脂,
c)通过在SAP分散体的沉积帆布上分层和抽吸来实施第一纸幅,
d)用碱性溶液冲洗纸幅,直至部分中和酸性盐溶液中的SAP分散体的酸性,或者用酸性溶液冲洗纸幅,直至部分中和碱性盐溶液中的SAP分散体的碱性;
e)用水冲洗纸幅并吸出;
f)干燥纸幅;
其中pH和盐浓度之间的关系为使SAP中的吸水率等于或小于约30.00gH2O/gSAP。
如图1和2所示,在所要求保护的工作条件下,尽管存在SAP,即使在相对高的量下,也吸收了有限量的水,因此限制了SAP的吸水和凝胶化现象。干燥成本因此而受到限制,并且避免了所有弊端的出现,例如大体积凝胶状块状物的内在形成和设备的中断。除了会导致纤维素填料的均化和均匀性变差之外,块状物的形成还会导致干燥周期变长,且工作速率浪费成本的上升,这会妨碍用于生产纸质材料的设备的特定技术的实施和生产。
根据优选的实施例,根据本发明的方法设想的盐溶液中的高吸水性聚合物(SAP)组分的分散体还包括天然或人造纤维素纤维和/或人造或合成纤维的分散体,所述分散体适用于制成可湿性的表面或者用表面活性剂整体进行处理,且根据所用的SAP的类型,在PH为0至6.0或8至14.0的情况下在纤维和SAP的盐水溶液中形成分散体。
SAP选自聚丙烯酸、水解丙烯腈聚合物、水解丙烯酰胺聚合物、淀粉-丙烯酸接枝共聚物、水解淀粉-丙烯腈接枝共聚物、聚(乳酸)、聚(天冬氨酸)、乙烯-马来酸酐共聚物、马来酸酐-异丁烯共聚物、皂化乙酸乙烯酯-丙烯酸酯共聚物、磺化聚苯乙烯、聚(乙烯基磷酸)、聚(乙烯基膦酸)、聚(乙烯基硫酸)、聚(乙烯基磺酸)及其混合物;优选地,酸性树脂是聚丙烯酸。
根据本发明的另一个实施例,所述分散体在略微交联的阳离子吸水树脂(SAP)的碱性水溶液中,所述阳离子吸水树脂(SAP)选自聚(乙烯胺)、聚(乙烯亚胺)、聚(乙烯基胍)、聚(烯丙胺)、聚(烯丙基胍)、聚(二烷基氨基(甲基)丙烯酰胺)、由N-(二烷基氨基(甲基)丙烯酰胺)的酯类似物制备的聚合物、聚(二甲基二烃基氢氧化铵)、胍改性的聚苯乙烯、季铵化的聚苯乙烯、季铵化的聚(甲基)丙烯酰胺或其酯类似物、聚(乙烯醇-共-乙烯胺)及其混合物;优选地,树脂是聚(乙烯胺)、聚(乙烯亚胺)、聚(乙烯基胍)、聚(二甲基氨基乙基丙烯酰胺)以及聚(DMAPMA)。
通过重复步骤c)-e),通过在步骤e)获得的纸幅上分层来获得另外的纸幅。
根据另一个实施例,于通过阴离子SAP分层获得的第一纸幅上,直接层压成阳离子SAP纸幅,然后进行纸幅干燥步骤;或者重复阴离子SAP分层,然后进行阳离子SAP分层,重复多次。
分散在盐溶液中的SAP可由颗粒、粉末、纤维、薄片或珍珠或其混合物组成。
根据优选的实施例,pH和盐浓度之间的关系为使得SAP的吸水率等于或小于约20.00gH2O/gSAP,优选小于15.00gH2O/gSAP。
方便地,该方法设想了其中加入湿强度树脂的纸幅,例如聚酰胺-胺-表氯醇(PAE)树脂或类似树脂。
根据本发明获得的吸收性材料允许生产纸张和厨房用巾,卫生纸和面巾纸,用于婴儿、失禁成人、月经期间或之间的妇女的吸收性卫生用品,失禁用户床垫罩和手术用床的床垫罩,腋下衬垫,用于食品工业的纸层或吸水垫层,用于吸收肉类、鱼类或蔬菜的排液的食品容器,宠物用吸水纸或吸水垫层,或用于棺材中吸收尸体腐烂时分泌的体液,以及吸收渗出液,例如伤口的医疗产品。
本发明的其他变化和修改对于本领域技术人员来说是显而易见的,并且覆盖这些变化和修改是所附权利要求的目的。
可以改变上面讨论的特定值和特定设置,并且引用它们仅仅是对本发明的特定实施例的说明,并不是旨在限制本发明的领域。
本发明的领域旨在由所附权利要求限定。
Claims (16)
1.一种湿法生产高吸水性材料的方法,其特征在于,包括:
a)通过加入强酸,形成盐溶液,盐溶液含有浓度为0.01-4.5N离子盐,pH值为0-6.0;
b)将高吸水性聚合物(SAP)组分分散在所述盐溶液中,其中所述高吸水性聚合物(SAP)组分选自含有至少一种未完全中和的酸性树脂的聚合物;
c)通过在SAP分散体的网筛带沉积部分上分层和抽吸来实现第一纸幅;
d)用碱性溶液冲洗所述纸幅直到酸性盐溶液中SAP分散体酸度达到所需中和水平;
e)用水冲洗所述纸幅并且吸收;
f)干燥所述纸幅;
其中pH和盐浓度之间的关系为,使得SAP中的吸水率等于或小于30gH2O/gSAP。
2.根据权利要求1所述的方法,其特征在于,在所述高吸水性聚合物(SAP)组分的盐溶液中的分散体还包括天然或人造纤维素纤维和/或人造和/或合成纤维的分散体,所述分散体适合于制成可湿性的表面或者用表面活性剂整体进行处理,在PH为0至6.0的情况下在纤维和SAP的盐水溶液中形成分散体。
3.根据权利要求1所述的方法,其特征在于,所述分散体在轻度交联的阴离子吸水树脂(SAP)的酸性水溶液中,并且SAP选自聚丙烯酸、水解丙烯腈聚合物、水解丙烯酰胺聚合物、淀粉-丙烯酸接枝共聚物、水解淀粉-丙烯腈接枝共聚物、聚(乳酸)、聚(天冬氨酸)、乙烯-马来酸酐共聚物、马来酸酐-异丁烯共聚物、皂化乙酸乙烯酯-丙烯酸酯共聚物、磺化聚苯乙烯、聚(乙烯基磷酸)、聚(乙烯基膦酸)、聚(乙烯基硫酸)、聚(乙烯基磺酸)及其混合物。
4.根据权利要求1所述的方法,其特征在于,通过重复步骤c)-e)在从步骤e)获得的纸幅上获得通过分层的另外的纸幅。
5.根据权利要求1所述的方法,其特征在于,所述盐溶液中分散的SAP由颗粒、粉末、纤维、薄片或珍珠或其混合物组成。
6.根据权利要求1所述的方法,其特征在于,pH和盐浓度之间的关系为,使得SAP吸水率小于或等于20.00gH2O/gSAP。
7.根据权利要求1所述的方法,其特征在于,在至少一个纸幅中含有湿强度树脂。
8.根据权利要求7所述的方法,其特征在于,所述湿强度树脂为聚酰-胺-表氯醇(PAE)树脂。
9.一种湿法生产高吸水性材料的方法,其特征在于,包括:
a)通过加入强碱,形成盐溶液,盐溶液含有浓度为0.01-4.5N离子盐,pH值为8.0-14.0;
b)将高吸水性聚合物组分(SAP)分散在所述盐溶液中,所述高吸水性聚合物(SAP)组分选自含有至少一种未完全中和的碱性树脂的聚合物;
c)通过在SAP分散体的网筛带沉积部分上分层和抽吸来实现第一纸幅;
d)用酸性溶液冲洗所述纸幅直到碱性盐溶液中SAP分散体碱度达到所需中和水平;
e)用水冲洗所述纸幅并且吸收;
f)干燥所述纸幅;
其中pH和盐浓度之间的关系为,使得SAP中的吸水率等于或小于30gH2O/gSAP。
10.根据权利要求9所述的方法,其特征在于,在所述高吸水性聚合物(SAP)组分的盐溶液中的分散体还包括天然或人造纤维素纤维和/或人造和/或合成纤维的分散体,所述分散体适合于制成可湿性的表面或者用表面活性剂整体进行处理,在PH为8至14.0的情况下在纤维和SAP的盐水溶液中形成分散体。
11.根据权利要求9所述的方法,其特征在于,所述分散体在轻度交联的阳离子吸水树脂(SAP)的碱性水溶液中,并且所述SAP选自聚(乙烯胺)、聚(乙烯亚胺)、聚(乙烯基胍)、聚(烯丙胺)、聚(烯丙基胍)、聚(二烷基氨基(甲基)丙烯酰胺)、由N-(二烷基氨基(甲基)丙烯酰胺)的酯类似物制备的聚合物、聚(二甲基二烃基氢氧化铵)、胍改性的聚苯乙烯、季铵化的聚苯乙烯、季铵化的聚(甲基)丙烯酰胺或其酯类似物、聚(乙烯醇-共-乙烯胺)及其混合物。
12.根据权利要求9所述的方法,其特征在于,通过重复步骤c)-e)在从步骤e)获得的纸幅上获得通过分层的另外的纸幅。
13.根据权利要求9所述的方法,其特征在于,所述盐溶液中分散的SAP由颗粒、粉末、纤维、薄片或珍珠或其混合物组成。
14.根据权利要求9所述的方法,其特征在于,pH和盐浓度之间的关系为,使得SAP吸水率小于或等于20.00gH2O/gSAP。
15.根据权利要求9所述的方法,其特征在于,在至少一个纸幅中含有湿强度树脂。
16.根据权利要求15所述的方法,其特征在于,所述湿强度树脂为聚酰-胺-表氯醇(PAE)树脂。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITGE20150013 | 2015-01-30 | ||
PCT/EP2016/051089 WO2016120130A1 (en) | 2015-01-30 | 2016-01-20 | Superabsorbent material sat (super absorbent tissue) |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108699769A CN108699769A (zh) | 2018-10-23 |
CN108699769B true CN108699769B (zh) | 2021-10-15 |
Family
ID=52774340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201680079371.0A Expired - Fee Related CN108699769B (zh) | 2015-01-30 | 2016-01-20 | 高吸收水性材料sat(高吸水性纸巾) |
Country Status (12)
Country | Link |
---|---|
US (1) | US10844545B2 (zh) |
EP (1) | EP3405153B1 (zh) |
JP (1) | JP6730451B2 (zh) |
CN (1) | CN108699769B (zh) |
AU (1) | AU2016212254B2 (zh) |
BR (1) | BR112018014248A2 (zh) |
CA (1) | CA3010390A1 (zh) |
ES (1) | ES2775548T3 (zh) |
MX (1) | MX2018008593A (zh) |
PL (1) | PL3405153T3 (zh) |
RU (1) | RU2719669C2 (zh) |
WO (1) | WO2016120130A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE539751C2 (en) * | 2015-11-09 | 2017-11-14 | Stora Enso Oyj | Active moisture control material for packaging and a method for production thereof |
CN111482160A (zh) * | 2020-04-30 | 2020-08-04 | 杭州亨玛电力科技有限公司 | 一种调湿片及其制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0702031A2 (en) * | 1994-09-16 | 1996-03-20 | Air Products And Chemicals, Inc. | Liquid absorbent composition for nonwoven binder applications |
US5997690A (en) * | 1998-02-18 | 1999-12-07 | Basf Corporation | Smooth textured wet-laid absorbent structure |
CN1627927A (zh) * | 2002-02-04 | 2005-06-15 | H·B·富勒许可和金融公司 | 超吸收性复合材料和包括它的吸收性制品 |
CN1649635A (zh) * | 2002-05-01 | 2005-08-03 | 巴斯福股份公司 | 增塑的超强吸收性聚合物片材及其在卫生制品中的应用 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61113900A (ja) | 1984-11-09 | 1986-05-31 | 旭化成株式会社 | アクリル系吸水性紙 |
EP0359615A1 (en) | 1988-09-01 | 1990-03-21 | James River Corporation Of Virginia | Manufacture of superabsorbent composite structures |
US5230959A (en) | 1989-03-20 | 1993-07-27 | Weyerhaeuser Company | Coated fiber product with adhered super absorbent particles |
EP0437816B1 (en) | 1990-01-16 | 1995-07-26 | Hoechst Celanese Corporation | Superabsorbent wet-lay nonwoven product |
GB2269602A (en) | 1992-08-13 | 1994-02-16 | Courtaulds Plc | Absorbent nonwoven fabric |
US20020007169A1 (en) | 1996-12-06 | 2002-01-17 | Weyerhaeuser Company | Absorbent composite having improved surface dryness |
US5795439A (en) | 1997-01-31 | 1998-08-18 | Celanese Acetate Llc | Process for making a non-woven, wet-laid, superabsorbent polymer-impregnated structure |
CN1208088A (zh) | 1997-08-11 | 1999-02-17 | 塞拉尼斯艾丝泰特有限责任公司 | 无纺纤维状超吸收产品 |
US6623576B2 (en) * | 1998-10-28 | 2003-09-23 | Basf Aktiengesellschaft | Continuous manufacture of superabsorbent/ion exchange sheet material |
CN1220324A (zh) | 1997-12-18 | 1999-06-23 | 塞拉尼斯阿希德特Llc公司 | 无纺纤维状超吸收产品 |
US6056854A (en) | 1998-03-27 | 2000-05-02 | Basf Corporation | Process to make a wet-laid absorbent structure |
WO2001000259A1 (en) | 1999-06-29 | 2001-01-04 | Stockhausen Gmbh & Co. Kg | Manufacture of web superabsorbent polymer and fiber |
US6979386B1 (en) | 1999-08-23 | 2005-12-27 | Kimberly-Clark Worldwide, Inc. | Tissue products having increased absorbency |
US6914095B2 (en) | 2000-09-21 | 2005-07-05 | Rohm And Haas Company | Nanocomposite compositions and methods for making and using same |
US7211171B2 (en) | 2002-01-05 | 2007-05-01 | The Procter & Gamble Company | Multiply tissue product |
US7579402B2 (en) | 2003-11-12 | 2009-08-25 | Evonik Stockhausen, Inc. | Superabsorbent polymer having delayed free water absorption |
US20050224200A1 (en) | 2004-04-07 | 2005-10-13 | Robert Bouchard | Super absorbent tissue products |
ITFI20050011A1 (it) | 2005-01-21 | 2006-07-22 | Perini Fabio Spa | Metodo ed impianto per la produzione di un manufatto in carta tissue o simile comprendente un materiale superassorbente |
US7910688B2 (en) | 2008-10-22 | 2011-03-22 | Evonik Stockhausen Inc. | Recycling superabsorbent polymer fines |
JP5957351B2 (ja) | 2012-09-27 | 2016-07-27 | 花王株式会社 | 抄造成形体の製造方法 |
-
2016
- 2016-01-20 MX MX2018008593A patent/MX2018008593A/es unknown
- 2016-01-20 ES ES16703270T patent/ES2775548T3/es active Active
- 2016-01-20 RU RU2018127664A patent/RU2719669C2/ru active
- 2016-01-20 US US16/069,743 patent/US10844545B2/en active Active
- 2016-01-20 EP EP16703270.5A patent/EP3405153B1/en active Active
- 2016-01-20 JP JP2018555818A patent/JP6730451B2/ja not_active Expired - Fee Related
- 2016-01-20 AU AU2016212254A patent/AU2016212254B2/en not_active Ceased
- 2016-01-20 WO PCT/EP2016/051089 patent/WO2016120130A1/en active Application Filing
- 2016-01-20 PL PL16703270T patent/PL3405153T3/pl unknown
- 2016-01-20 CA CA3010390A patent/CA3010390A1/en not_active Abandoned
- 2016-01-20 BR BR112018014248A patent/BR112018014248A2/pt not_active Application Discontinuation
- 2016-01-20 CN CN201680079371.0A patent/CN108699769B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0702031A2 (en) * | 1994-09-16 | 1996-03-20 | Air Products And Chemicals, Inc. | Liquid absorbent composition for nonwoven binder applications |
US5997690A (en) * | 1998-02-18 | 1999-12-07 | Basf Corporation | Smooth textured wet-laid absorbent structure |
CN1627927A (zh) * | 2002-02-04 | 2005-06-15 | H·B·富勒许可和金融公司 | 超吸收性复合材料和包括它的吸收性制品 |
CN1649635A (zh) * | 2002-05-01 | 2005-08-03 | 巴斯福股份公司 | 增塑的超强吸收性聚合物片材及其在卫生制品中的应用 |
Also Published As
Publication number | Publication date |
---|---|
CA3010390A1 (en) | 2016-08-04 |
MX2018008593A (es) | 2018-08-15 |
JP6730451B2 (ja) | 2020-07-29 |
WO2016120130A1 (en) | 2016-08-04 |
RU2018127664A (ru) | 2020-02-20 |
US20190017225A1 (en) | 2019-01-17 |
AU2016212254B2 (en) | 2021-09-23 |
US10844545B2 (en) | 2020-11-24 |
ES2775548T3 (es) | 2020-07-27 |
RU2719669C2 (ru) | 2020-04-21 |
CN108699769A (zh) | 2018-10-23 |
EP3405153B1 (en) | 2019-12-04 |
BR112018014248A2 (pt) | 2018-12-18 |
JP2019506546A (ja) | 2019-03-07 |
EP3405153A1 (en) | 2018-11-28 |
AU2016212254A1 (en) | 2018-08-02 |
PL3405153T3 (pl) | 2021-07-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR940000808B1 (ko) | 흡수성 코어 및 이를 포함하는 일회용 흡수성 제품 | |
JP5236668B2 (ja) | 高透過率の超吸水性ポリマー組成物を含む吸収性物品 | |
RU2186797C2 (ru) | Композиционные составы с высокой абсорбционной способностью, абсорбирующий листовой материал, покрытый такими составами, и способ его изготовления | |
KR101075314B1 (ko) | 고투과성의 신장성 흡수 복합재 | |
EP2583647B1 (en) | Absorbent sheet and method for producing same | |
HUT72728A (en) | Porosus, absorbent macrostructures of bonded absorbent particles surface crosslinked with cationic amino-epichlorohydrin adducts, producing thereof and a product | |
JPH10508528A (ja) | 基板と橋かけ可能なハイドロゲルポリマー粒子とから成る吸収性複合構造体 | |
TW200305448A (en) | Superabsorbent composite and absorbent articles including the same | |
EP1503812A1 (en) | Plasticized superabsorbent polymer sheets and use thereof in hygienic articles | |
TW477709B (en) | Water absorbing agent and water absorbent material | |
JP3720118B2 (ja) | 乾燥状態および湿潤状態における改善された構造的安定性を有する吸収性材料およびその製法 | |
EP0724419A1 (en) | Absorbent material comprising a porous macrostructure of absorbent gelling particles | |
CN104349796B (zh) | 改进的个人护理吸收性制品 | |
KR20130132504A (ko) | 보유능이 향상된 크레이프 티슈 제품 | |
US20120289917A1 (en) | Enhanced personal care absorbent articles | |
CN108699769B (zh) | 高吸收水性材料sat(高吸水性纸巾) | |
MXPA02001985A (es) | Compuesto absorbente formado en humedo. | |
JP6971360B2 (ja) | 高吸収性材料sat(高吸収性薄紙) | |
TW384218B (en) | A method of producing an absorbent structure and an absorbent article including the same (revised as of Aug. 1999) | |
KR860001384B1 (ko) | 섬유상 흡수 플러프의 제조 방법 | |
KR20030062738A (ko) | 흡수성 수지조성물 및 그 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211015 Termination date: 20220120 |