WO2020052676A1 - 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料及其制备方法 - Google Patents
一种可循环再生利用的纸塑复合材料用水溶性涂覆材料及其制备方法 Download PDFInfo
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- WO2020052676A1 WO2020052676A1 PCT/CN2019/105827 CN2019105827W WO2020052676A1 WO 2020052676 A1 WO2020052676 A1 WO 2020052676A1 CN 2019105827 W CN2019105827 W CN 2019105827W WO 2020052676 A1 WO2020052676 A1 WO 2020052676A1
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- water
- paper
- plastic composite
- soluble coating
- coating material
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Classifications
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- 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
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
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- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
-
- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/46—Non-macromolecular organic compounds
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- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/54—Starch
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- 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
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
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- 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
Definitions
- the present invention relates to the field of preparation and application of water-soluble coating materials for paper-based composite materials, and in particular, to a water-soluble coating material for paper-plastic composite materials that can be recycled and reused, and a preparation method thereof.
- the so-called composite packaging material is a packaging material with a two-dimensional structure, which is composed of two or more materials with different properties by lamination, coextrusion, and other methods.
- the composite packaging material follows the combination of strengths and avoids weaknesses in the microstructure, exerts the advantages of the constituents, expands the scope of use, improves economic benefits, and makes it a more practical and complete packaging material.
- Paper-plastic composite packaging materials have been widely used in food, pharmaceutical, chemical and daily product packaging, disposable consumer packaging, disposable convenience bags and other fields due to their light blocking, safety and health, convenient use and low cost. And it is increasing significantly every year. Therefore, research on the material, structure, and domestic and foreign recycling of paper-plastic composite packaging materials is of great significance.
- Paper-plastic composite packaging material is a paper with a basic structural material, and another or more than one film material, combined through one or more composite processes to form a certain function composite material, which With high strength, good water resistance and beautiful appearance, it is one of the most popular packaging materials.
- the film uses BOPP ⁇ PET ⁇ CPP ⁇ PE as the base material, and the paper uses refined composite special paper.
- Paper-plastic composite packaging material can be said to be an environmentally friendly product. There are about dozens of classifications according to different applications and processes. Kraft paper, white kraft paper, soft cotton paper, base paper, pearl paper, etc. are commonly used in the field of flexible packaging. The basis weight ranges from 25g / m 2 to 80g / m 2 .
- paper-plastic composite materials generally include: 1 bonding of paper materials and plastics through adhesives; and can be divided into dry composite and wet composite.
- Dry composite is solvent-free Type adhesives for compounding; such as patents CN106009155A, CN2635356, CN1445084, etc .
- wet methods are using solvent or water-based adhesives for compounding; such as patents CN106584918A, CN105365282A, CN1053 28965 A ⁇ CN105313411A, CN105291526A, CN105328964A, CN102069602A, CN101638559, etc. 2 Laminating and coating directly on paper materials.
- the currently mature paper-plastic materials include paper-based materials, adhesive material layers, and plastic film layers; in addition to the paper-based materials being environmentally friendly and environmentally friendly materials, other The adhesive layer and plastic layer compounded on the paper-based material do not meet environmental protection requirements. Even the paper-based material recycling after use will cause great confusion. It is not easy to separate these non-environmental material layers, which also leads to The difficulty or cost of recycling paper-based materials increases.
- the object of the present invention is to provide a water-soluble coating material for paper-plastic composite materials that can be recycled and used, and a method for preparing the same.
- the water-soluble coating material for paper-plastic composite materials that can be recycled is environmentally friendly and safe, It has excellent heat-seal adhesiveness, and can realize the renewable recycling of paper-plastic composite materials.
- a recyclable water-soluble coating material for a paper-plastic composite material including at least the following components:
- HPC Hydroxypropyl cellulose
- the polyvinyl alcohol (PVA) is a completely alcoholyzed polyvinyl alcohol; the polymerization degree of the completely alcoholyzed polyvinyl alcohol is 1100 2000, the degree of alcoholysis is 99%, and the completely alcoholyzed polymer is Vinyl alcohol has the characteristics of being insoluble in cold water and soluble in hot water.
- the hydroxypropyl cellulose is a highly substituted hydroxypropyl fiber having a molar degree of substitution (MS)> 3.0, a degree of substitution (DS)> 2.0, and a degree of polymerization between 100 and 300.
- H-HPC Highly Substituted Hydroxypropyl Cellulose
- H-HPC is a good thermoplastic natural polymer with excellent film-forming properties, excellent adhesion, very tough film formation, gloss Good; chemically inert, difficult to chemically react with other substances; non-pharmacological, non-toxic, harmless to physiology.
- the glycerin is used as a plasticizer and used as a polyvinyl alcohol (PVA) plasticizer.
- PVA polyvinyl alcohol
- the ethylene glycol is used as a good solvent for hydroxypropyl cellulose (HPC) and used as a solubilizing effect. No ethylene glycol is added, and the mixed solution system is unstable. When the ethylene glycol is added, the mixed solution is mixed. Even and stable.
- HPC hydroxypropyl cellulose
- the starch includes one of corn starch and tapioca starch, and is added as a volume filler.
- the precipitation method silica and talc are added as a filler in the present invention, and its role is to provide a pit-filling effect for the paper-based surface, so that the film surface after coating is formed into a film. smooth.
- the defoamer is a water-soluble defoamer.
- the water is industrial deionized water.
- the present invention also includes a method for preparing a water-soluble coating material for a recyclable paper-plastic composite material as described above. The method includes the following specific steps:
- the present invention also provides an application of the water-soluble coating material as described above in a paper-plastic composite material, the application comprising applying the water-soluble coating material to a paper-based material through a coating machine.
- the surface is a recyclable paper-plastic composite material after drying, calendering and rolling.
- the present invention has the following characteristics and advantages compared with the existing methods and applications of paper-plastic composite materials: 1
- the composite coating completely uses water as a medium, and does not use any organic solvents in the production, which is environmentally friendly and safe;
- the coating glue used is both an adhesive and a composite film-forming material with a paper-based material; has excellent adhesion to the paper-based material; 3 after being formed into a film with the paper-based material, the composite film layer has a heat seal It can be mechanically heat-sealed to produce packaging bags made of paper-plastic materials with high efficiency.
- 4 Suitable for preparing various paper-based packaging materials, especially suitable for preparing disposable bags such as shopping bags, disposable packaging bags, and convenience bags.
- recycled paper can be recycled directly without the need to separate the coating film, because this coating film can be water-soluble in hot water and can be used as a reinforcing agent for paper fibers into the papermaking process. Realizing completely renewable recycling, it is a truly environmentally friendly renewable paper-plastic composite material.
- the polyvinyl alcohol (PVA) used is one or more of the polyvinyl alcohols of the brands PVA-1199, PVA-139 9, PVA-1799, and PVA-2099, so using hydroxypropyl cellulose (HPC) U.S. Hercules, Inc ⁇ produced Klucel-E, Klucel-L, Klucel-J of one
- the defoamer used is one of the defoamers and defoamers SRXP811, SRXP812, FSXP901, FSXP902 produced by Guangzhou Wanrong New Material Technology Co., Ltd.
- the leveling agent used is Guangzhou Wanrong New Material Technology Co., Ltd.
- the company produces one of LP0100, LP050A, and LP050C.
- a recyclable water-soluble coating material for paper-plastic composite materials includes the components shown in Table 1 below:
- each component is added to a container with a heating jacket, heated to 95 ° C under stirring, and kept warm for 2 hours (h) under stirring; 2 then stop heating And cooled to room temperature through jacketed cooling water; 3 continue to stir at room temperature for 0.5 hours (h); the output is a recyclable water-soluble coating material for paper-plastic composite materials.
- the above water-soluble coating material is metered on a coating machine to a surface of a paper-based material (60 g / m 2 ), and dried, calendered, and rolled is a recyclable paper-plastic composite material. .
- the basic performance is shown in Table 2.
- a recyclable water-soluble coating material for a paper-plastic composite material includes the components shown in Table 3 below:
- the above water-soluble coating material is metered on a coating machine to a surface of a paper-based material (80 g / m 2 ), and dried, calendered, and rolled is a recyclable paper-plastic composite material. .
- the basic performance is shown in Table 4.
- a recyclable water-soluble coating material for paper-plastic composite materials includes the components shown in Table 5 below:
- each component is added to a container with a heating jacket, heated to 95 ° C under stirring, and kept warm for 3 hours (h) under stirring; 2 then stop heating And cooled to room temperature through jacketed cooling water; 3 continue to stir at room temperature for 0.5 hours (h); the output is a recyclable water-soluble coating material for paper-plastic composite materials.
- the above water-soluble coating material is metered and coated on the surface of a paper-based material (45 g / m 2 ) on a coating machine, and dried, calendered, and rolled is a recyclable paper-plastic composite material. .
- the basic performance is shown in Table 6.
- a recyclable water-soluble coating material for a paper-plastic composite material includes the components shown in Table 7 below:
- the above water-soluble coating material is metered on a coating machine to the surface of a paper-based material (35 g / m 2 ), and dried, calendered, and rolled is a recyclable paper-plastic composite material. .
- the basic performance is shown in Table 8.
- a recyclable water-soluble coating material for paper-plastic composite materials includes the components shown in Table 9 below:
- the above water-soluble coating material is metered on a coating machine to a surface of a paper-based material (125 g / m 2 ), and dried, calendered, and rolled is a recyclable paper-plastic composite material. .
- the basic performance is shown in Table 10.
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
一种可循环再生利用的纸塑复合材料用水溶性涂覆材料,包括聚乙烯醇(PVA)、羟丙基纤维素(HPC)、甘油、乙二醇、淀粉、沉淀法二氧化硅、滑石粉、消泡剂、流平剂和水。其制备方法为:各组分计量后加入到带有加热夹套的容器中,在搅拌下升温至95℃,在搅拌下保温2-4小时,然后停止加热,并通过夹套冷却水冷却至室温,在室温下继续搅拌0.5小时,出料即为一种可循环再生利用的纸塑复合材料用水溶性涂覆材料。
Description
一种可循环再生利用的纸塑复合材料用水溶性涂覆材料 及其制备方法
技术领域
[0001] 本发明涉及纸基复合材料用水溶性涂覆材料的制备及应用领域, 具体涉及一种 可循环再生利用的纸塑复合材料用水溶性涂覆材料及其制备方法。
背景技术
[0002] 我国的软包装兴起于上世纪 70年代末。 随着包装设备的引进, 软包装及其复合 包装材料迅速发展起来。 所谓复合包装材料是由两种或两种以上不同性能的材 料通过层合、 共挤等方法结合在一起组成的具有二维结构的包装材料。 复合包 装材料在微观结构上遵循扬长避短的结合, 发挥所组成物质的优点, 扩大使用 范围、 提高经济效益, 使它成为一种更实用、 更完备的包装材料。 纸塑复合包 装材料以其阻光、 安全卫生、 使用方便和成本低廉等特点, 已被世界各国广泛 应用于食品、 药品、 化学品及日用品包装及一次性消费包装、 一次性便利袋等 领域, 且每年都在大幅度递增。 因此, 对纸塑复合包装材料材质、 结构及国内 外回收利用等方面的研究具有十分重要的意义。
[0003] 纸塑复合包装材料是一种以纸为基本结构材料, 与另一种或一种以上薄膜材料 , 经过一次或多次复合工艺而组合在一起, 从而构成一定功能的复合材料, 其 具有高强度、 防水性好、 外观漂亮等特点, 是目前最流行的包装材料之一。
[0004] 通常薄膜采用 BOPP\PET\CPP\PE等为基材, 纸张则采用精制复合专用纸。 纸塑 复合包装材料可以说是一种环保产品。 根据用途、 工艺等情况不同大约有几十 种分类, 常用到软包装领域的有牛皮纸、 白牛皮纸、 软棉纸、 原纸、 珠光纸等 , 定量从 25g/m 2到 80g/m 2不等。
[0005] 目前, 纸塑复合材料的生产工艺一般有: ①通过粘合剂实现纸质材料与塑料粘 合进行复合; 又可分为干法复合和湿法复合, 干法复合是采用无溶剂型粘合剂 进行复合; 如专利 CN106009155A、 CN2635356、 CN1445084等; 湿法是采用溶 剂型或水性粘合剂进行复合; 如专利 CN106584918A、 CN105365282A、 CN1053
28965 A ^ CN105313411A、 CN105291526A、 CN105328964A、 CN102069602A、 CN101638559等②直接在纸质材料上进行淋涂涂覆复合。 如专利 CN106256706A 、 CN202480505U等。
[0006] 未来, 纸塑复合包装材料将主要向两方面发展:
[0007] 1.功能性纸塑复合包装材料
[0008] 由普通四边封袋子向自立袋方向发展; 向插嘴袋、 易撕拉链袋方向发展; 向独 立小包装方向发展; 向环保型包装袋方向发展; 溯源系统的强制建立实施, 纸 塑包装袋将向一袋一码方向发展等。
[0009] 2.低温封口纸塑复合包装材料
[0010] 未来包装机械要求简单方便, 节约能源, 提高速度, 增加效率, 以适应现代大 批量包装的需要, 其中使用低温封口包装材料是必要条件。 随着包装需求的不 断增加, 现代化商品对包装提出了更多的要求, 这在很大程度上促进了包装材 料的创新发展, 从简单的纸包装, 到单层的塑料包装, 再发展到纸塑复合包装 材料。 未来, 纸塑复合包装材料必将向着系列化、 多功能、 高性能、 特殊功能 等方向发展, 呈现百花齐放的市场局面。
[0011] 综上所述, 不难看出, 目前成熟生产的纸塑材料, 包含有纸基材料、 粘合剂材 料层和塑料薄膜层; 其中除了纸基材料属于环保和环境友好材料外, 其他复合 到纸基材料上的粘合层和塑料层并不具备环保要求, 甚至在使用后的纸基材料 回收上会造成很大困扰, 不容易把这些不环保的材料层分离出来, 也就导致纸 基材料回收的困难增大或成本增大。
发明概述
技术问题
问题的解决方案
技术解决方案
[0012] 本发明的目的在于提供一种可循环再生利用的纸塑复合材料用水溶性涂覆材料 及其制备方法, 所述可再循环利用的纸塑复合材料用水溶性涂覆材料环保、 安 全, 具有优异的热封粘合性, 并能够实现纸塑复合材料的可再生循环利用。
[0013] 本发明的目的至少通过如下技术方案之一实现。
[0014] 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料, 以重量份数计, 至少 包括如下组分:
[0015] 聚乙烯醇 (PVA) 100
[0016] 羟丙基纤维素 (HPC) 10-30
[0017] 甘油 10-20
[0018] 乙二醇 5-15
[0019] 淀粉 5-10
[0020] 沉淀法二氧化硅 2-6
[0021] 滑石粉 5-15
[0022] 消泡剂 0.3-0.8
[0023] 流平剂 0.5-2.0
[0024] 水 450-600。
[0025] 优选的, 所述聚乙烯醇 (PVA) 为完全醇解型聚乙烯醇; 该完全醇解型聚乙烯 醇的聚合度为 1100 2000、 醇解度为 99%, 完全醇解型聚乙烯醇具有冷水不溶而 热水可溶的特性。
[0026] 优选的, 所述羟丙基纤维素(HPC)是摩尔取代度 (MS) >3.0, 取代度 (DS) > 2.0, 聚合度在 100-300之间的高取代度羟丙基纤维素 (H-HPC) , 高取代度羟丙 基纤维素 (H-HPC) 是一种良好的热塑性天然高分子,具有优良的成膜性, 优良 的粘结性, 成膜非常坚韧, 光泽性良好; 呈化学惰性, 难与其他物质发生化学 反应; 无药理作用,无毒,对生理无害。
[0027] 优选的, 所述甘油作为增塑剂, 用作聚乙烯醇 (PVA) 增塑。
[0028] 优选的, 所述乙二醇作为羟丙基纤维素 (HPC) 的良溶剂, 用作增溶作用, 不 加乙二醇, 混合溶液体系不稳定, 当加入乙二醇后混合溶液均匀稳定。
[0029] 优选的, 所述淀粉包括玉米淀粉、 木薯淀粉中的一种, 作为体积填料加入。
[0030] 优选的, 所述沉淀法二氧化硅、 滑石粉在本发明中作为一种填料加入, 其作用 在于为纸基表面提供填坑补平等作用, 使涂覆成膜后的膜面更平整。
[0031] 优选的, 所述消泡剂为水溶性消泡剂。
[0032] 优选的, 所述水是工业去离子水。
[0033] 本发明还包括一种如上所述的可循环再生利用的纸塑复合材料用水溶性涂覆材 料的制备方法, 所述制备方法包括如下具体步骤:
[0034] ①将各组分加入到带有加热夹套的容器中, 在搅拌下升温至 95°C, 在搅拌下保 温 2-4小时;
[0035] ②然后停止加热, 并通过夹套冷却水冷却至室温;
[0036] ③在室温下继续搅拌 0.5小时,出料即为一种可循环再生利用的纸塑复合材料用 水溶性涂覆材料。
[0037] 本发明还提供了一种如上所述的水溶性涂覆材料在纸塑复合材料中的应用, 该 应用包括将所述的水溶性涂覆材料通过涂覆机涂覆到纸基材料表面, 经干燥、 压光、 收卷后即为一种可再循环利用的纸塑复合材料。
发明的有益效果
有益效果
[0038] 本发明与目前现有的纸塑复合材料的制备方法和应用对比有如下特征和优点: ①复合涂层完全使用水作介质, 生产中不使用任何有机溶剂, 环保、 安全; ②所 使用的涂覆胶即是与纸基材料的粘合剂又是复合的成膜材料; 与纸基材料具有 优异的粘合性; ③与纸基材料复合成膜后, 复合膜层具有热封性, 在纸塑材料制 备包装袋可以实现机械热封制袋, 效率高; ④适合制备各种纸基包装材料, 特别 适合制备一次性使用的如购物袋、 一次性包装袋、 便利袋等快消品的包装和消 费; ⑤使用完后可以直接回收再生造纸, 不需把涂层膜分离, 因为此涂层膜可以 在热水下水溶, 并可作为纸纤维的补强剂进入造纸过程, 实现完全可再生循环 利用, 是一种真正意义上的环保可再生纸塑复合材料。
发明实施例
本发明的实施方式
[0039] 以下结合具体实施例对本发明技术方案作进一步具体详细的描述, 但本发明的 实施方式和保护范围不限于此。
[0040] 下列具体实施例中, 所使用的聚乙烯醇 (PVA) 是牌号为 PVA-1199、 PVA-139 9、 PVA-1799、 PVA-2099的聚乙烯醇中的一种或多种, 所使用的羟丙基纤维素 (HPC) 为美国 Hercules, Inc ·公司生产的 Klucel-E、 Klucel-L、 Klucel-J中的一种,
所使用的消泡剂为广州市万容新材料科技有限公司生产的消泡抑泡剂 SRXP811 、 SRXP812、 FSXP901、 FSXP902中的一种, 所使用的流平剂为广州市万容新材 料科技有限公司生产 LP0100、 LP050A、 LP050C中的一种。
[0041] 实施例 1
[0042] 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料, 以重量份数计 (例如 单位 g) , 包括如下表 1所示组分:
[0043] 表 1
[] [表 1]
[0044] 将上述各组分别计量好, ①将各组分加入到带有加热夹套的容器中, 在搅拌下 升温至 95°C, 在搅拌下保温 2小时 (h) ; ②然后停止加热, 并通过夹套冷却水冷 却至室温; ③在室温下继续搅拌 0.5小时 (h) ; 出料即为一种可再循环利用的纸 塑复合材料用水溶性涂覆材料。
[0045] 将上述水溶性涂覆材料在涂覆机上经过计量涂覆到纸基材料 (60g/m 2) 表面, 干燥、 压光、 收卷即为一种可再循环利用的纸塑复合材料。 基本性能如表 2。
[0046] 表 2.实施例 1基本性能:
60
(g/m 紙基复合材料 (g/m 81 复合膜层水溶性
135
( 9CTC, S) 纸基复合材料
3. I QB/T 2358--9B 熱圭 f性能 (N/ISoro)
[0048] 从上述实验数据可知, 实施例 1制备的一种可再循环利用的纸塑复合材料已经 具备热封性, 可以进行机器自动化制袋, 而且复合在纸基材料表面的涂膜具备 热水可完全溶解的特征。
[0049] 实施例 2
[0050] 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料, 以重量份数计, 包括 如下表 3所示组分:
[0051] 表 3
[]
[表 2]
[0052] 将上述各组分别计量好, ①将各组分加入到带有加热夹套的容器中, 在搅拌下 升温至 95°C, 在搅拌下保温 4小时 (h) ; ②然后停止加热, 并通过夹套冷却水冷 却至室温; ③在室温下继续搅拌 0.5小时 (h) ; 出料即为一种可再循环利用的纸 塑复合材料用水溶性涂覆材料。
[0053] 将上述水溶性涂覆材料在涂覆机上经过计量涂覆到纸基材料 (80g/m 2) 表面, 干燥、 压光、 收卷即为一种可再循环利用的纸塑复合材料。 基本性能如表 4。
[0054] 表 4.实施例 2基本性能:
[0055]
80
(g/W) 纸基复会猶料 (g/fR2) 112 复合靡层水溶性
153
( t;, S) 纸基复合材料
[0056] 从上述实验数据可知, 实施例 2制备的一种可再循环利用的纸塑复合材料已经 具备优良的热封性, 可以进行机器自动化制袋, 而且复合在纸基材料表面的涂 膜具备热水可完全溶解的特征。
[0057] 实施例 3
[0058] 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料, 以重量份数计, 包括 如下表 5所示组分:
[0059] 表 5
[]
[表 3]
[0060] 将上述各组分别计量好, ①将各组分加入到带有加热夹套的容器中, 在搅拌下 升温至 95°C, 在搅拌下保温 3小时 (h) ; ②然后停止加热, 并通过夹套冷却水冷 却至室温; ③在室温下继续搅拌 0.5小时 (h) ; 出料即为一种可再循环利用的纸 塑复合材料用水溶性涂覆材料。
[0061] 将上述水溶性涂覆材料在涂覆机上经过计量涂覆到纸基材料 (45g/m 2) 表面, 干燥、 压光、 收卷即为一种可再循环利用的纸塑复合材料。 基本性能如表 6。
[0062] 表 6 ·实施例 3基本性能:
[0063]
实施例 3 测试标准 复合前纸基材料
2 \
Vg/ ffi ) 紙基复合材料 (g/m ) 63 复合騰歷水溶性
ioe
( >9rc , S) 紙基复合材料
材料破坏 QB/T 2358-98 热封性能 ( 5_)
[0064] 从上述实验数据可知, 实施例 3制备的一种可再循环利用的纸塑复合材料已经 具备优良的热封性, 可以进行机器自动化制袋, 而且复合在纸基材料表面的涂 膜具备热水可完全溶解的特征。
[0065] 实施例 4
[0066] 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料, 以重量份数计, 包括 如下表 7所示组分:
[0067] 表 7
[]
[表 4]
[0068] 将上述各组分别计量好, ①将各组分加入到带有加热夹套的容器中, 在搅拌下 升温至 95°C, 在搅拌下保温 4小时 (h) ; ②然后停止加热, 并通过夹套冷却水冷 却至室温; ③在室温下继续搅拌 0.5小时 (h) ; 出料即为一种可再循环利用的纸 塑复合材料用水溶性涂覆材料。
[0069] 将上述水溶性涂覆材料在涂覆机上经过计量涂覆到纸基材料 (35g/m 2) 表面, 干燥、 压光、 收卷即为一种可再循环利用的纸塑复合材料。 基本性能如表 8。
[0070] 表 8.实施例 4基本性能:
(>9crcs s)
纸基复合材料
材料破坏 QB/T 2358-98 热封性能 (N/15mm)
[0072] 从上述实验数据可知, 实施例 4制备的一种可再循环利用的纸塑复合材料已经 具备优良的热封性, 可以进行机器自动化制袋, 而且复合在纸基材料表面的涂 膜具备热水可完全溶解的特征。
[0073] 实施例 5
[0074] 一种可循环再生利用的纸塑复合材料用水溶性涂覆材料, 以重量份数计, 包括 如下表 9所示组分:
[0075] 表 9
[]
[表 5]
[0076] 将上述各组分别计量好, ①将各组分加入到带有加热夹套的容器中, 在搅拌下 升温至 95°C, 在搅拌下保温 4小时 (h) ; ②然后停止加热, 并通过夹套冷却水冷 却至室温; ③在室温下继续搅拌 0.5小时 (h) ; 出料即为一种可再循环利用的纸 塑复合材料用水溶性涂覆材料。
[0077] 将上述水溶性涂覆材料在涂覆机上经过计量涂覆到纸基材料 (I25g/m 2) 表面 , 干燥、 压光、 收卷即为一种可再循环利用的纸塑复合材料。 基本性能如表 10
[0078] 表 10.实施例 5基本性能:
12§
Cl/m2} 紙基复合材料 (g/mr) 162 5 复合膜层水溶性
127
(>9trc, s)
紙基复合材料
材料破坏 韻 /T 23驗、、雜 热圭 t性能 ( N/ 15mm )
[0080] 从上述实验数据可知, 实施例 5制备的一种可再循环利用的纸塑复合材料已经 具备优良的热封性, 可以进行机器自动化制袋, 而且复合在纸基材料表面的涂 膜具备热水可完全溶解的特征。
[0081] 上述实施例为本发明较佳的实施方式, 但本发明的实施方式并不受上述实施例 的限制, 其它的任何未背离本发明的精神实质与原理下所作的改变、 修饰、 替 代、 组合、 简化, 均应为等效的置换方式, 都包含在本发明的保护范围之内。
Claims
[表 1]
[权利要求 2] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述聚乙烯醇为完全醇解型聚乙烯醇; 该完全醇 解型聚乙烯醇的聚合度为 1100-2000 ^ 醇解度为 99%。
[权利要求 3] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述羟丙基纤维素的摩尔取代度 23.0, 取代度 22 .0, 聚合度在 100-300之间。
[权利要求 4] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述甘油作为增塑剂, 用作聚乙烯醇增塑。
[权利要求 5] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述乙二醇作为羟丙基纤维素的良溶剂, 主要用
作增溶作用。
[权利要求 6] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述淀粉包括玉米淀粉、 木著淀粉中的一种, 作 为体积填料加入。
[权利要求 7] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述消泡剂为水溶性消泡剂。
[权利要求 8] 根据权利要求 1所述的可循环再生利用的纸塑复合材料用水溶性涂覆 材料, 其特征在于, 所述水是工业去离子水。
[权利要求 9] 一种如权利要求 1~8任一所述的可循环再生利用的纸塑复合材料用水 溶性涂覆材料的制备方法, 其特征在于, 包括如下具体步骤:
①将各组分分别计量好,加入到带有加热夹套的容器中, 在搅拌下升温 至 95°C, 在搅拌下保温 2-4小时;
②然后停止加热, 并通过夹套冷却水冷却至室温;
③在室温下继续搅拌 0.5小时,出料即为一种可循环再生利用的纸塑复 合材料用水溶性涂覆材料。
[权利要求 10] 一种如权利要求 1~8任一所述的水溶性涂覆材料在纸塑复合材料中的 应用, 其特征在于, 将所述的水溶性涂覆材料通过涂覆机涂覆到纸基 材料表面, 经干燥、 压光、 收卷后即为一种可再循环利用的纸塑复合 材料。
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