WO2019047280A1 - 生物可降解涂层纸及其生产设备 - Google Patents

生物可降解涂层纸及其生产设备 Download PDF

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Publication number
WO2019047280A1
WO2019047280A1 PCT/CN2017/102420 CN2017102420W WO2019047280A1 WO 2019047280 A1 WO2019047280 A1 WO 2019047280A1 CN 2017102420 W CN2017102420 W CN 2017102420W WO 2019047280 A1 WO2019047280 A1 WO 2019047280A1
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Prior art keywords
paper
coating
layer
biodegradable
coated
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PCT/CN2017/102420
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English (en)
French (fr)
Inventor
肖南
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重庆泰宝纸制品有限公司
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Priority claimed from CN201710804066.XA external-priority patent/CN107385993A/zh
Priority claimed from CN201721133339.4U external-priority patent/CN207244341U/zh
Application filed by 重庆泰宝纸制品有限公司 filed Critical 重庆泰宝纸制品有限公司
Publication of WO2019047280A1 publication Critical patent/WO2019047280A1/zh
Priority to AU2020100286A priority Critical patent/AU2020100286A4/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C13/00—Means for manipulating or holding work, e.g. for separate articles
    • B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • 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
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H19/80—Paper comprising more than one coating

Definitions

  • the invention relates to the field of coated paper technology, in particular to a biodegradable coated paper and a production device thereof.
  • a water-repellent coating is applied to the paper to form a coated paper.
  • the current main coatings can be divided into the following two categories:
  • PE polyethylene
  • PP polypropylene
  • PS polystyrene
  • PC polycarbonate
  • PET polyethylene terephthalate
  • ABS acrylonitrile
  • PMMA polymethyl methacrylate
  • nylon etc.
  • Bio-PE bio-polyethylene
  • Bio-PP bio-polypropylene
  • Bio-PA bio-polyamide
  • PTT polytrimethylene terephthalate
  • the mainstream coating coated paper in the market is mainly PE coated paper, and its coating is mainly high/low density polyethylene (H/LDPE).
  • H/LDPE high/low density polyethylene
  • the molecular structure of the material is very stable and it is difficult to be degraded by light and heat in nature. It takes about 200 years in the environment. If the decomposition is accelerated, it needs to be decomposed to ethylene (normal temperature gaseous state) by high-temperature incineration (>240 ° C), and also accompanied by various harmful oxidation products.
  • ethylene normal temperature gaseous state
  • high-temperature incineration >240 ° C
  • the production and use of PE coated paper in production and life is huge. PE synthetic polymer materials are difficult to degrade after being discarded, resulting in ecological environment pollution, and the pollution is expanding.
  • White pollution refers to an image of environmental pollution caused by waste plastics. Specifically, it refers to packaging bags made of polymer compounds such as polyethylene, polypropylene, and polyvinyl chloride. Plastic articles such as disposable tableware and plastic bottles are discarded as solid waste after use. Due to random littering, it is difficult to degrade and treat, causing irreversible pollution to the ecological environment and landscape.
  • the degradable coatings developed at home and abroad mainly include: PBAT (polyadipate), PCL (polycaprolactone), PHA (polyhydroxyalkanoate), PLA (polylactic acid); It is PLA, PLA is lactic acid produced by fermenting sugar derived from cereals or other organic matter, and lactic acid is further polymerized to obtain linear aliphatic polyester-polylactic acid (PLA). The degradation of PLA is divided into two stages.
  • the first stage is that its ester group is gradually hydrolyzed into lactic acid and other small molecules, and then these small molecules are decomposed by microorganisms in the environment, because the degradation proceeds step by step, and the degradation rate is slow.
  • PLA is often blended with starch to enhance its degradability and reduce cost.
  • Some producers also often use some other degradable polyesters to blend with PLA; however, this blend is hard and brittle and has poor plasticity, so it is also softened by adding some plasticizers such as glycerin and sorbitol. some.
  • the substrate of the existing coated paper is generally a single layer of paper, which has poor rigidity and a narrow application range.
  • a biodegradable coated paper comprising a substrate and a coating of a biodegradable material coated on a surface of the substrate, the substrate comprising a coating carrier layer and a support reinforcement layer, the biodegradable material coated on one side surface of the coating carrier layer forming the coating layer, the support reinforcement layer being disposed on the other side of the coating carrier layer
  • the surface and the support reinforcement layer can support or reinforce the coating carrier layer.
  • the support reinforcement layer is corrugated paper, hollow paper or white cardboard.
  • the hollow paper comprises a hollow paper paper body, the opposite edges of the hollow paper paper body are both folded inwardly and the outer surface of the folded edge is attached to the other of the coated carrier layer On one side surface, there is a hollow chamber between the region between the two edges of the hollow paper body and the coated carrier layer.
  • the corrugated paper comprises a corrugated bottom paper and a corrugated outer layer, wherein:
  • the corrugated paper is attached to the other side surface of the coating carrying layer, and the outer layer of the corrugated paper is attached to a side surface of the corrugated bottom paper facing away from the coating carrying layer, and The outer layer of corrugated paper is pleated.
  • the biodegradable material comprises polybutylene succinate.
  • the extrusion casting compound machine (coating machine) used in the paper products industry is mainly for particles such as PE/PLA. If the PE/PLA type laminating machine is directly applied to the Bio-PBS coating process, Due to the difference in properties of Bio-PBS particles and PE and PLA, many problems will occur, such as 1 poor castability, uneven coating coating; 2 temperature mismatch, insufficient plasticization; 3 frequent sticking of cylinders.
  • the present invention also provides a laminating machine comprising an extrusion system capable of extruding the biodegradable material to a surface of the substrate paper, and a pressing system,
  • the press-fit system can pressurize the biodegradable material with the coated carrier layer by applying pressure.
  • the extrusion system comprises a storage device and a discharge device, the material outlet of the discharge device is in communication with an inlet of the discharge device, and the discharge device is capable of storing the storage device
  • the biodegradable material is extruded onto the surface of the substrate paper through a screw barrel, a die 26, and a die lip on the die 26, which are connected to each other.
  • the discharge device is internally provided with a pressure regulating device and a funnel valve.
  • a filter screen is disposed in the pressure regulating device.
  • the composite system comprises a composite drum having an outer surface having sand blasting and electroplating of Teflon.
  • the laminating machine further comprises a paper winding system and a conveying system, the paper winding system comprising a unwinding device and a winding device, wherein the coating carrier layer in a roll form is unwound by the unwinding device, And transported by the delivery system in a single layer to the extrusion system and the composite system for recombination; the coated paper produced by the extrusion system and the composite system is sent to the Winding device Make a roll.
  • the paper winding system comprising a unwinding device and a winding device, wherein the coating carrier layer in a roll form is unwound by the unwinding device, And transported by the delivery system in a single layer to the extrusion system and the composite system for recombination; the coated paper produced by the extrusion system and the composite system is sent to the Winding device Make a roll.
  • the unwinding device comprises a first reel and a second reel, one of the reel and the second reel is a working reel, and the other is a spare reel, and the working reel and the spare reel are both
  • the coated carrier transport system is coupled, and the substrate paper on the backup spool is continuously transported after the substrate paper on the work spool is transported.
  • the laminating machine further comprises a corona mechanism disposed between the unwinding device and the composite system and capable of improving adhesion of the surface of the coating carrier layer, A coating carrier layer is sequentially conveyed from the unwinding device to the corona mechanism and the composite system by the delivery system.
  • biodegradable coated paper Because biodegradable coated paper has the characteristics of low carbon environmental protection, ecological cycle, sustainable development, etc., it can be applied to containers, packaging, agriculture, automobiles, consumer goods, etc., and it is placed in domestic and foreign markets, and its advantages are obvious. With great potential and broad prospects, it will become an inevitable trend to gradually replace non-degradable types of coated paper such as PE coating.
  • FIG. 1 is a schematic structural view of a biodegradable coated paper having a support reinforcing layer as a hollow paper according to the present invention
  • FIG. 2 is a schematic structural view of a biodegradable coated paper having a double-coated coating layer of a coating support layer of a hollow paper according to the present invention
  • FIG. 3 is a schematic structural view of a biodegradable coated paper with a support reinforcing layer as a double-sided coating of hollow paper according to the present invention
  • FIG. 4 is a schematic structural view of a biodegradable coated paper supporting a reinforcing layer of corrugated paper according to the present invention
  • FIG. 5 is a schematic structural view of a biodegradable coated paper with a double-sided coating supporting a reinforcing layer as a white cardboard according to the present invention
  • Figure 6 is a schematic structural view of an extrusion system according to the present invention.
  • Figure 7 is a schematic structural view of the discharging device according to the present invention.
  • Figure 8 is a schematic structural view of a laminating machine according to the present invention.
  • Figure 9 is a schematic structural view of a screw barrel according to the present invention.
  • Figure 10 is a schematic view showing the structure of a die according to the present invention.
  • the present invention provides a biodegradable coated paper comprising a substrate and a coating 12 of biodegradable material coated on the surface of the substrate, the substrate comprising a coated carrier layer 11 and support reinforcement a layer, a biodegradable material coated on one side surface of the coating carrying layer 11 forms the coating layer 12, the support reinforcing layer being disposed on the other side surface of the coating carrying layer 11 and
  • the support reinforcement layer can support or reinforce the coating carrier layer 11.
  • the support reinforcement layer is corrugated paper, hollow paper or white cardboard.
  • the hollow paper comprises a hollow paper paper body 13, the opposite edges of the hollow paper paper body 13 are both folded inwardly and the outer surface of the folded portion is attached to the coating.
  • a hollow chamber exists between a region between the two edges of the hollow paper sheet body 13 and the coating carrying layer 11; as shown in Fig. 2, the hollow
  • the outer surface of the paper sheet body 13 may be coated with the coating 12 of the biodegradable material; as shown in FIG. 3, as shown in the figure, the outer surface of the hollow paper sheet body 13 may be attached to the biofilm on both sides.
  • the coating carrier layer 11 of the coating 12 of the degradation material may be used to the coating.
  • the corrugated paper comprises a corrugated bottom paper 14 and a corrugated paper outer layer 15, wherein: the corrugated bottom paper 14 is attached to the other side surface of the coating carrying layer 11, outside the corrugated paper A layer 15 is attached to a side surface of the corrugated base paper 14 facing away from the coating carrying layer 11, and the corrugated paper outer layer 15 is pleated.
  • the biodegradable coated paper further comprises a double-layer coated paper comprising a white cardboard as a substrate, and both sides of the white cardboard are coated with a biodegradable material. Coating 12.
  • the biodegradable material comprises polybutylene succinate (abbreviated as PBS).
  • PBS polybutylene succinate
  • the polybutylene succinate is obtained by esterification polycondensation of succinic acid succinic acid and 1.4 butanediol.
  • the biodegradable material further comprises polybutylene succinate, an antioxidant, and a release agent, which together constitute the biodegradable material (abbreviated as Bio-PBS particles).
  • the present invention provides a laminating machine comprising an extrusion system and a press system 3 capable of extruding the biodegradable material to the substrate paper In the surface, the pressing system 3 can pressurize the biodegradable material with the coating carrier layer 11 by applying pressure.
  • the extrusion system comprises a storage device 7 and a discharge device 2, the material outlet of the discharge device 2 is in communication with the inlet of the discharge device 2, and the discharge device 2 can
  • the biodegradable material stored in the stocker 7 is extruded to the surface of the substrate paper through a screw barrel 25, a die 26, and a die lip 24 on the die 26 that communicate with each other.
  • the discharge device 2 is internally provided with a pressure regulating device 22 and a funnel valve 23, and a filter screen 21 is disposed in the pressure regulating device 22.
  • the structure of the screw barrel 25 is suitable for the rheological property of the Bio-PBS particles; the pressure regulating device 26 is added to the front section of the screw barrel 25, and the funnel valve is installed on the connecting flow path to ensure more uniform extrusion plasticization;
  • the die and lip ensure a more uniform and controllable extrusion of the Bio-PBS particles.
  • the invention solves a series of problems that the conventional laminating machine has poor ductility, uneven coating coating, temperature mismatch, and insufficient plasticization.
  • the composite system comprises a composite drum 3 having an outer surface with sand blasting and electroplating of Teflon, which solves the problem of frequent sticking of the coating.
  • the laminating machine further comprises a paper winding system and a conveying system
  • the winding system comprises a unwinding device 4 and a winding device 6, and the coating carrier layer 11 is formed in a roll shape.
  • the unwinding device 4 is unwound and transported by the conveying system in a single layer to a position where the extrusion system and the composite system 3 are composited; a coating formed by the extrusion system and the composite system 3
  • the paper is sent to the winding device 6 through the conveying system for winding.
  • the unwinding device 4 includes a first reel 41 and a second reel 42, one of the reel 41 and the second reel 42 is a work reel, and the other is a spare reel, Both the work reel and the spare reel are coupled to the coating carrier layer 11 delivery system, and the substrate paper on the backup reel is continuously conveyed after the substrate paper on the work reel is conveyed.
  • the laminating machine further comprises a corona mechanism 5 disposed between the unwinding device 4 and the composite system 3 and capable of enhancing the carrying of the coating Adhesion of the surface of the layer 11 by which the coating carrier layer 11 is sequentially transported from the unwinding device 4 to the corona mechanism 5 and the composite system 3.
  • the coating layer is uniformly coated, the thickness is uniform, and there are no defects such as lack of film, stripping, shrinking film and delamination;
  • Bio-PBS coated film on both sides of the web trimmed edges, no burrs, no gaps;
  • the deviation of the weight of the coating is not more than ⁇ 2g / m 2
  • the weight range of PE coating can refer to the following table standard: and the biodegradable coated paper is 230g / m due to the composite characteristics 2 and 280g/m 2 size base paper, the pre-set coating weight of the process equipment is set to 20g/m 2 to ensure the composite strength.
  • the biodegradable coated paper quantitative and peel strength test results obtained from the trial production are as follows table:
  • Biodegradable coated paper quality standard and test report (this test method and standard temporary test PE coated paper GB related standard), the main test indicators are: 1 quantitative 2 quantitative difference 3 banner quantitative difference 4 thickness 5 Banner thickness difference 6 size error (reel diameter + width) 7 whiteness 8 PBS quantitative difference 9 moisture 10 stiffness Smoothness Peel strength Ash Dust Water absorption Side seepage Exterior Odor hygiene standard Plasticizer indicators, etc.
  • Bio-PBS quantitative fluctuations ⁇ 1g / m 2 and peel strength test (based on reasonable sample width, length and peel speed) results are in line with PE coated paper related standards.
  • BioPBS coated paper permeability, water permeability test indicators (tested by third-party ptt-MCC company):
  • biodegradable coated paper quantitative, peel strength, gas permeability, water permeability, and hygienic indicators can meet the requirements for the detection of PE coated paper.

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  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Biological Depolymerization Polymers (AREA)

Abstract

一种生物可降解涂层纸及其生产设备，该生物可降解涂层纸包括基材以及涂布在基材的表面上的生物可降解材料的涂层（12），基材包括涂层承载层（11）和支撑加固层，涂布于涂层承载层（11）的一侧表面的生物可降解材料形成涂层（12），支撑加固层设置在涂层承载层（11）的另一侧表面且支撑加固层能支撑或加固涂层承载层（11）。

Description

生物可降解涂层纸及其生产设备 技术领域
本发明涉及涂层纸技术领域，尤其是涉及一种生物可降解涂层纸及其生产设备。
背景技术
为了使普通纸具有防水的效果，会在纸上涂附隔水涂层，形成涂层纸。当前主要涂层可分为以下两类：
①石油基：传统塑料：PE(聚乙烯)，PP(聚丙烯)，PS(聚苯乙烯)，PC(聚碳酸酯)，PET(聚对苯二甲酸乙二醇酯)，ABS(丙烯腈-丁二烯-苯乙烯)，PMMA(聚甲基丙烯酸甲酯)，尼龙等；
②淀粉与PE混合基：Bio-PE(生物聚乙烯)Bio-PP(生物聚丙烯)Bio-PA(生物聚酰胺)PTT(聚对苯二甲酸丙二醇酯)。石油机材料综合性能优良，是人们生产和生活中的主要材料。
目前市场主流涂层淋膜纸主要为PE涂层纸，其涂层主要为高/低密度聚乙烯(H/LDPE)，其材料分子结构非常稳定，很难被自然界的光和热降解，常规环境下约需要200年。若加速其分解，则需要高温焚烧等方式(＞240℃)其降解为乙烯(常温气态)，同时也伴有各种有害氧化产物。但是当前生产和生活中PE涂层纸生产及使用量巨大，PE合成高分子材料使用废弃后较难降解，造成生态环境污染，且污染呈现扩大趋势。
此类污染可归结为白色污染，白色污染是指对废塑料污染环境现象的一种形象称谓，具体是指用聚乙烯、聚丙烯、聚氯乙烯等高分子化合物制成的包装袋、农用地膜、一次性餐具、塑料瓶等塑料制品使用后被弃置成为固体废物，由于随意乱丢乱扔，难于降解处理，给生态环境和景观造成不可逆的污染。其主要以①视觉污染：在城市、旅游区、水体和道路旁散落的废旧塑料包装物给 人们的视觉带来不良刺激，影响城市、风景点的整体美感，破坏市容、景色；②潜在危害：侵占土地过多、污染空气、污染水体、火灾隐患、很难降解，造成长期深层次生态环境问题。
面对日益严重的白色污染问题，人们希望寻找一种能替代现行PE涂层涂层纸，又不造成白色污染的塑料替代品。目前国内外研发出的可降解涂层涂层主要包括：PBAT(聚己二酸)，PCL(聚己内酯)、PHA(聚羟基脂肪酸酯)、PLA(聚乳酸)；其中较常用的是PLA，PLA是利用来自于谷物或其它有机物的发酵糖产生的乳酸，乳酸再通过聚合反应得到线形脂肪族聚酯--聚乳酸(PLA)。PLA的降解分为两个阶段，第一阶段是它的酯基团逐步水解成为乳酸和其它小分子，然后这些小分子被环境中的微生物所分解，因为降解分步进行，降解速度慢。PLA经常和淀粉共混以增强其可降解性能并降低成本。一些生产者也经常使用一些别的可降解聚酯与PLA共混来；但是这种共混产物硬脆，可塑性差，因此还要加入一些增塑剂如甘油和山梨糖醇使其变得柔软一些。
另外，现有的涂层纸的基材一般都是单层纸，刚性差，应用范围窄。
发明内容
本发明的目的在于提供一种基于生物可降解涂层纸及其生产设备，以解决现有技术中存在的涂层纸刚性较差的技术问题。
为实现上述目的，本发明提供了以下技术方案：一种生物可降解涂层纸，包括基材以及涂布在所述基材的表面上的生物可降解材料的涂层，所述基材包括涂层承载层和支撑加固层，涂布于所述涂层承载层的一侧表面的生物可降解材料形成所述涂层，所述支撑加固层设置在所述涂层承载层的另一侧表面且所述支撑加固层能支撑或加固所述涂层承载层。
优选的，所述支撑加固层为瓦楞纸、中空纸或白卡纸。
优选的，所述中空纸包括中空纸纸张本体，所述中空纸纸张本体的位置相对的两个边沿均朝内折边且折边部位的外表面附着在所述涂层承载层的所述另 一侧表面上，所述中空纸纸张本体的两个边沿之间的区域与所述涂层承载层之间存在中空腔室。
优选的，所述瓦楞纸包括瓦楞底纸和瓦楞纸外层，其中：
所述瓦楞底纸附着在所述涂层承载层的所述另一侧表面上，所述瓦楞纸外层附着在所述瓦楞底纸背离所述涂层承载层的一侧表面上，且所述瓦楞纸外层呈褶皱状。
优选的，所述生物降解材料包括聚丁二酸丁二醇酯。
目前纸制品行业所应用的挤出流延复合机(淋膜机)主要是针对PE/PLA等性状粒子，若直接将PE/PLA类型的淋膜机应用在Bio-PBS淋膜涂层工艺上，由于Bio-PBS粒子与PE、PLA属性差异，将产生诸多问题，如①流延性不佳，淋膜涂层不均匀；②温度不匹配，塑化不充分；③频繁粘缸等现象。
为了解决上述问题本发明还提供了一种淋膜机，包括挤出***和压合***，所述挤出***能够将所述生物可降解材料挤出至所述基材纸的表面，所述压合***能采用施压的方式使所述生物可降解材料与所述涂层承载层复合。
优选的，所述挤出***包括储料装置和出料装置，所述出料装置的物料出口与所述出料装置的入口连通，所述出料装置能将所述储料装置中储存的所述生物可降解材料通过相互连通的螺杆螺筒、模头26以及模头26上的模唇挤出至所述基材纸的表面，所述出料装置内部设有调压装置和漏斗阀，所述调压装置内设有滤网。
优选的，所述复合***包括复合滚筒，所述复合滚筒的外表面具有喷砂和电镀铁氟龙。
优选的，所述淋膜机还包括卷纸***和输送***，所述卷纸***包括放卷装置和收卷装置，成卷状的所述涂层承载层通过所述放卷装置解卷，并通过所述输送***以单层的形式输送至所述挤出***和复合***进行复合的位置；经过所述挤出***和复合***制成的涂层纸通过所述输送***送至所述收卷装置 进行收卷。
优选的，所述放卷装置包括第一卷轴和第二卷轴，所述一卷轴和第二卷轴其中之一为工作卷轴，其中另一为备用卷轴，所述工作卷轴和备用卷轴均与所述涂层承载层输送***连接，当所述工作卷轴上的基材纸被输送后，所述备用卷轴上的基材纸被继续输送。
优选的，所述淋膜机还包括电晕机构，所述电晕机构设置在所述放卷装置与所述复合***之间且能够提高使所述涂层承载层表面的附着性，所述涂层承载层通过所述输送***从所述放卷装置依次输送至所述电晕机构和所述复合***。
本发明产出合格的生物可降解涂层纸。因为生物可降解涂层纸具有低碳环保、生态循环、可持续发展等优良特性，可应用于容器、包装、农业、汽车、消费品等方面，将其投放于国内外市场，其优势明显，市场潜力巨大、前景广阔，逐步替代PE涂层等不可降解类型的涂层纸将成为一种必然趋势。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明所述的支撑加固层为中空纸的生物可降解涂层纸的结构示意图；
图2是本发明所述的支撑加固层为中空纸的涂层承载层双面涂层的生物可降解涂层纸的结构示意图；
图3是本发明所述的支撑加固层为中空纸双面涂层的的生物可降解涂层纸的结构示意图；
图4是本发明所述的支撑加固层为瓦楞纸的生物可降解涂层纸的结构示意图；
图5是本发明所述的支撑加固层为白卡纸的双面涂层的生物可降解涂层纸的结构示意图；
图6是本发明所述的挤出***的结构示意图；
图7是本发明所述的出料装置的结构示意图；
图8是本发明所述的淋膜机的结构示意图；
图9是本发明所述的螺杆螺筒的结构示意图；
图10是本发明所述的模头的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将对本发明的技术方案进行详细的描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所得到的所有其它实施方式，都属于本发明所保护的范围。
本发明提供了一种生物可降解涂层纸，包括基材以及涂布在所述基材的表面上的生物可降解材料的涂层12，所述基材包括涂层承载层11和支撑加固层，涂布于所述涂层承载层11的一侧表面的生物可降解材料形成所述涂层12，所述支撑加固层设置在所述涂层承载层11的另一侧表面且所述支撑加固层能支撑或加固所述涂层承载层11。
作为可选的实施方式，所述支撑加固层为瓦楞纸、中空纸或白卡纸。
如图1所示，所述中空纸包括中空纸纸张本体13，所述中空纸纸张本体13的位置相对的两个边沿均朝内折边且折边部位的外表面附着在所述涂层承载层11的所述另一侧表面上，所述中空纸纸张本体13的两个边沿之间的区域与所述涂层承载层11之间存在中空腔室；如图2所示，所述中空纸纸张本体13的外表面可以涂布所述生物可降解材料的涂层12；如图3所示，如图所述中空纸纸张本体13的外表面可以附着在双面涂布所述生物可降解材料的涂层12的所述涂层承载层11。
如图4所示，所述瓦楞纸包括瓦楞底纸14和瓦楞纸外层15，其中：所述瓦楞底纸14附着在所述涂层承载层11的所述另一侧表面上，所述瓦楞纸外层15附着在所述瓦楞底纸14背离所述涂层承载层11的一侧表面上，且所述瓦楞纸外层15呈褶皱状。
如图5所示，所述生物可降解涂层纸还包括双层涂层纸，所述双层图纸包括由白卡纸作为基材，白卡纸两侧面均涂布有生物可降解材料的涂层12。
不同类型涂层纸的特点和适用范围：单涂层适合普通单层容器；双面涂层适合容器内外层温差较大的冷饮、冰淇淋容器；瓦楞纸：适用于隔热、防滑、挺度大、质感要求高等特性的容器；中空纸：适用于隔热、质感要求较高等特性的容器；
作为可选的实施方式，所述生物降解材料包括聚丁二酸丁二醇酯(简称PBS)。所述聚丁二酸丁二醇酯由丁二酸琥珀酸和1.4丁二醇经酯化缩聚而得。
作为可选的实施方式，所述生物降解材料还包括聚丁二酸丁二醇酯、抗氧化剂和脱模剂，共同构成所述生物可降解材料(简称Bio-PBS粒子)。
所述Bio-PBS粒子包括以下特性：
①FZ71PM注塑，附合度更优，更适用于亚洲客户，
②FZ91PM挤出，加工稳定性更优，更适用于欧洲客户
③MZ7A0101抗氧化剂，与FZ71PM熔融抗氧化效果更佳
④MB92AM抗氧化剂，与FZ91PM熔融抗氧化效果更佳
⑤MB71BM脱模剂～防止粘连冷却缸
⑥MZ7C0201脱模剂～防止粘连冷却缸
如图6-10所示，本发明提供了一种淋膜机，包括挤出***和压合***3，所述挤出***能够将所述生物可降解材料挤出至所述基材纸的表面，所述压合***3能采用施压的方式使所述生物可降解材料与所述涂层承载层11复合。
作为可选的实施方式，所述挤出***包括储料装置7和出料装置2，所述出料装置2的物料出口与所述出料装置2的入口连通，所述出料装置2能将所述储料装置7中储存的所述生物可降解材料通过相互连通的螺杆螺筒25、模头26以及模头26上的模唇24挤出至所述基材纸的表面，所述出料装置2内部设有调压装置22和漏斗阀23，所述调压装置22内设有滤网21。螺杆螺筒25的结构适用于Bio-PBS粒子流变特性；螺杆螺筒25前段增加调压装置26，且连接流道上安装漏斗阀，保证挤出塑化更均匀；
模头和模唇保证Bio-PBS粒子挤出的更均匀且可控。解决了传统淋膜机流延性不佳、淋膜涂层不均匀、温度不匹配、塑化不充分的一系列问题。
作为可选的实施方式，所述复合***包括复合滚筒3，所述复合滚筒3的外表面具有喷砂和电镀铁氟龙，解决了涂层频繁粘缸的问题。
作为可选的实施方式，所述淋膜机还包括卷纸***和输送***，所述卷纸***包括放卷装置4和收卷装置6，成卷状的所述涂层承载层11通过所述放卷装置4解卷，并通过所述输送***以单层的形式输送至所述挤出***和复合***3进行复合的位置；经过所述挤出***和复合***3制成的淋膜纸通过所述输送***送至所述收卷装置6进行收卷。
作为可选的实施方式，所述放卷装置4包括第一卷轴41和第二卷轴42，所述一卷轴41和第二卷轴42其中之一为工作卷轴，其中另一为备用卷轴，所述工作卷轴和备用卷轴均与所述涂层承载层11输送***连接，当所述工作卷轴上的基材纸被输送后，所述备用卷轴上的基材纸被继续输送。
作为可选的实施方式，所述淋膜机还包括电晕机构5，所述电晕机构5设置在所述放卷装置4与所述复合***3之间且能够提高使所述涂层承载层11表面的附着性，所述涂层承载层11通过所述输送***从所述放卷装置4依次输送至所述电晕机构5和所述复合***3。
淋膜纸生产的工艺条件：
一次实施例中淋膜加工过程中每卷淋膜记录工艺参数统计表如下：
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000001
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000002
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000003
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000004
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000005
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000006
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000007
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000008
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000009
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000010
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000011
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000012
Bio-PBS淋膜试车工艺参数统计表
Figure PCTCN2017102420-appb-000013
成品涂层纸检验项目及结果
Figure PCTCN2017102420-appb-000014
(1)外观
①淋膜层涂覆均匀、厚薄一致，无缺膜、脱膜、缩膜、分层等不良现象；
②卷筒纸端面平整，无严重的翘曲、凹凸，整卷纸接头≤1个，接头有明显的标记；
③卷筒纸两边Bio-PBS涂层膜：切边整齐、无毛边、缺口；
④原纸与Bio-PBS涂层复合面无皱褶。
(2)规格尺寸
参照PE涂层纸的克重规定，淋膜克重偏差不超过±2g/m2，PE涂层克重范围可参照下表标准：而生物可降解涂层纸由于复合特性，针对230g/m2与280g/m2规格原纸，将制程设备预设涂层克重设置为20g/m2，以保证其复合强度，此次试产得到的生物可降解涂层纸定量与剥离强度检测结果如下表：
Figure PCTCN2017102420-appb-000015
Figure PCTCN2017102420-appb-000016
(3)生物可降解涂层纸质量标准及检测报告(此次检测方法及标准暂试用PE涂层纸GB相关标准)，其主要检测指标有：①定量②定量差③横幅定量差④厚度⑤横幅厚度差⑥尺寸误差(卷盘直径+幅宽)⑦白度⑧PBS定量差⑨水分⑩挺度
Figure PCTCN2017102420-appb-000017
平滑度
Figure PCTCN2017102420-appb-000018
剥离强度
Figure PCTCN2017102420-appb-000019
灰分
Figure PCTCN2017102420-appb-000020
尘埃度
Figure PCTCN2017102420-appb-000021
吸水性
Figure PCTCN2017102420-appb-000022
边渗水
Figure PCTCN2017102420-appb-000023
外观
Figure PCTCN2017102420-appb-000024
异味
Figure PCTCN2017102420-appb-000025
卫生指标
Figure PCTCN2017102420-appb-000026
塑化剂指标等。
涂层纸(Bio-PBS)关键指标说明：定量波动≤1g/m2及剥离强度检测(基于合理的试样宽度、长度与剥离速度)结果均符合PE涂层纸相关标准。
BioPBS涂层纸透气性、渗水实验指标(第三方ptt-MCC公司检测)：
Figure PCTCN2017102420-appb-000027
其透气标准值：水(WVTR)：ASTM E96/E96m-10→温度：38℃/90％RH
氧气(OTR)：ASTM D3985-05→温度：23℃/0％RH
Figure PCTCN2017102420-appb-000028
综上所述，可以得出结论：
生物可降解涂层纸定量、剥离强度、透气性、渗水性、卫生指标等关键指标可以满足PE涂层纸的检测相关要求。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到 变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (10)

  1. 一种生物可降解涂层纸，其特征在于，包括基材以及涂布在所述基材的表面上的生物可降解材料的涂层(12)，所述基材包括涂层承载层(11)和支撑加固层，涂布于所述涂层承载层(11)的一侧表面的生物可降解材料形成所述涂层(12)，所述支撑加固层设置在所述涂层承载层(11)的另一侧表面且所述支撑加固层能支撑或加固所述涂层承载层(11)。
  2. 根据权利要求1所述的生物可降解涂层纸，其特征在于，所述支撑加固层为瓦楞纸、中空纸或白卡纸。
  3. 根据权利要求2所述的生物可降解涂层纸，其特征在于，所述中空纸包括中空纸纸张本体(13)，所述中空纸纸张本体(13)的位置相对的两个边沿均朝内折边且折边部位的外表面附着在所述涂层承载层(11)的所述另一侧表面上，所述中空纸纸张本体(13)的两个边沿之间的区域与所述涂层承载层(11)之间存在中空腔室。
  4. 根据权利要求2所述的生物可降解涂层纸，其特征在于，所述瓦楞纸包括瓦楞底纸(14)和瓦楞纸外层(15)，其中：
    所述瓦楞底纸(14)附着在所述涂层承载层(11)的所述另一侧表面上，所述瓦楞纸外层(15)附着在所述瓦楞底纸(14)背离所述涂层承载层(11)的一侧表面上，且所述瓦楞纸外层(15)呈褶皱状。
  5. 根据权利要求1所述的生物可降解涂层纸，其特征在于，所述生物降解材料包括聚丁二酸丁二醇酯。
  6. 一种用于生产权利要求1-5任一所述生物可降解涂层纸的淋膜机，其特征在于，所述淋膜机包括挤出***和压合***(3)，所述挤出***能够将所述生物可降解材料挤出至所述基材纸的表面，所述压合***(3)能采用施压的方式使所述生物可降解材料与所述涂层承载层(11)复合。
  7. 根据权利要求6所述的淋膜机，其特征在于，所述挤出***包括储料装 置(7)和出料装置(2)，所述出料装置(2)的物料出口与所述出料装置(2)的入口连通，所述出料装置(2)能将所述储料装置(7)中储存的所述生物可降解材料通过相互连通的螺杆螺筒(25)、模头26以及模头26上的模唇(24)挤出至所述基材纸的表面，所述出料装置(2)内部设有调压装置(22)和漏斗阀(23)，所述调压装置(22)内设有滤网(21)。
  8. 根据权利要求7所述的淋膜机，其特征在于，所述复合***包括复合滚筒(3)，所述复合滚筒(3)的外表面具有喷砂和电镀铁氟龙。
  9. 根据权利要求8所述的淋膜机，其特征在于，所述淋膜机还包括卷纸***和输送***，所述卷纸***包括放卷装置(4)和收卷装置(6)，成卷状的所述涂层承载层(11)通过所述放卷装置(4)解卷，并通过所述输送***以单层的形式输送至所述挤出***和复合***(3)进行复合的位置；经过所述挤出***和复合***(3)制成的涂层(12)纸通过所述输送***送至所述收卷装置(6)进行收卷。
  10. 根据权利要求9所述的淋膜机，其特征在于，所述淋膜机还包括电晕机构(5)，所述电晕机构(5)设置在所述放卷装置(4)与所述复合***(3)之间且能够提高使所述涂层承载层(11)表面的附着性，所述涂层承载层(11)通过所述输送***从所述放卷装置(4)依次输送至所述电晕机构(5)和所述复合***(3)。
PCT/CN2017/102420 2017-09-05 2017-09-20 生物可降解涂层纸及其生产设备 WO2019047280A1 (zh)

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CN103080419A (zh) * 2010-08-23 2013-05-01 巴斯夫欧洲公司 防潮性瓦楞纸板
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