WO2014063338A1 - 一种淋膜纸材的制造方法及淋膜纸材 - Google Patents

一种淋膜纸材的制造方法及淋膜纸材 Download PDF

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Publication number
WO2014063338A1
WO2014063338A1 PCT/CN2012/083548 CN2012083548W WO2014063338A1 WO 2014063338 A1 WO2014063338 A1 WO 2014063338A1 CN 2012083548 W CN2012083548 W CN 2012083548W WO 2014063338 A1 WO2014063338 A1 WO 2014063338A1
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WIPO (PCT)
Prior art keywords
raw material
paper
coating
polypropylene
polyethylene
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PCT/CN2012/083548
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English (en)
French (fr)
Inventor
张开有
Original Assignee
Chang Kai-Yu
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Publication date
Application filed by Chang Kai-Yu filed Critical Chang Kai-Yu
Priority to CA2887692A priority Critical patent/CA2887692A1/en
Priority to KR1020157009751A priority patent/KR101847251B1/ko
Priority to US14/437,464 priority patent/US20150273805A1/en
Priority to EP12886966.6A priority patent/EP2913279A4/en
Priority to MX2015005135A priority patent/MX2015005135A/es
Priority to JP2015535953A priority patent/JP5978402B2/ja
Priority to AU2012392878A priority patent/AU2012392878B2/en
Priority to PCT/CN2012/083548 priority patent/WO2014063338A1/zh
Publication of WO2014063338A1 publication Critical patent/WO2014063338A1/zh
Priority to PH12015500816A priority patent/PH12015500816A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B05D1/265—Extrusion coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/10—Homopolymers or copolymers of propene
    • C09D123/12—Polypropene
    • 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
    • D21H27/30—Multi-ply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • Y10T428/31899—Addition polymer of hydrocarbon[s] only
    • Y10T428/31902—Monoethylenically unsaturated

Definitions

  • the invention relates to a method for producing a paper coating and a component for coating a paper.
  • paper food containers are usually coated with a plastic coating on the inner and outer surfaces to achieve waterproof effect.
  • Conventional coatings usually use polyethylene (PE) as the main component, polyethylene fluidity. Good, easy to cover on paper.
  • PE polyethylene
  • the heat resistance of polyethylene is only about 60 °C. It can only be used for cold drinks. If hot drinks are used, the film may decompose and release toxic substances, resulting in content. The material is contaminated.
  • the coated paper container with polyethylene as the main component cannot be heated by microwave.
  • a few paper containers are coated with polypropylene (PP) as a raw material.
  • the heat resistance of polypropylene can reach about 135 °C, which is enough to hold hot drinks and can also be heated by microwave.
  • Propylene has poor fluidity.
  • polypropylene is hardened by air during flow coating. Therefore, polypropylene raw materials cannot be smoothly spread on the surface of paper and formed.
  • a larger amount of raw materials are used for laminating, and the quality of the coating which is too fast hardening is uneven, and it is easy to produce a plurality of blocks of uneven concentration, which lowers the yield, and if the quality is repeated, the film is deposited multiple times, thereby not only increasing the weight. , also increased costs.
  • a primary object of the present invention is to provide a method for producing a paper coating and a composition for a paper coating to provide a better heat resistance and to have better yield and product quality.
  • the present invention provides a method for producing a paper coating, comprising the steps of: (a) heat-melting and stirring a raw material in a kneading manner, and re-granulating the primary raw material into a second raw material, wherein the primary raw material comprises polypropylene (PP) and polyethylene (PE);
  • step (C) re-granulating the raw material that has been stirred in step (b);
  • step (d) heating and melting the re-granulated raw material of step (c);
  • step (e) the raw material heated and melted in step (d) is extruded through an extruder to form a coating
  • the initial raw material comprises 80 to 90% of polypropylene (PP) and 10 to 20% of polyethylene (PE), and the ratio of the first raw material to the second raw material of the step (b) is 80 ⁇ 92: 8 ⁇ 20.
  • the invention further provides a paper coating component, comprising a paper material and a coating film coated on the surface of the paper material, wherein a raw material is kneaded and regranulated to become a second raw material, the first material
  • the raw material is mixed with a first raw material, heated and melted, and then regranulated, heated and melted, and then extruded by an extruder to form the coating.
  • the first raw material is polypropylene (PP), and the raw material is composed of the raw material.
  • the invention comprises polypropylene (PP) and polyethylene (PE); wherein the primary raw material comprises 80 to 90% of polypropylene (PP) and 10 to 20% of polyethylene (PE), and the ratio of the first raw material to the second raw material For 80 ⁇ 92: 8 ⁇ 20.
  • the paper coating provided by the invention can withstand higher temperature, so that it can hold hot drinks and has better fluidity and can be evenly distributed on the surface of the paper, thereby improving quality and improving yield.
  • Figure 1 is a manufacturing flow diagram of the present invention.
  • S7 forms a coating S8 coated with a film on paper
  • the present invention provides a method for manufacturing a paper coating, comprising the following steps:
  • step (c) re-granulating the material that has been stirred in step (b);
  • step (d) heating and melting the re-granulated raw material of step (c), S5;
  • step (e) The raw material heated and melted in step (d) is extruded through an extruder to form a coating S7;
  • the initial raw material comprises 80 to 90% of polypropylene (PP) and 10 to 20% of polyethylene (PE), and the ratio of the first raw material to the second raw material of the step (b) is 80 ⁇ 92: 8 ⁇ 20.
  • the present invention also provides a paper coating component comprising a paper material and a coating film coated on the surface of the paper material, wherein the primary raw material is a second raw material after being kneaded and regranulated.
  • the second raw material is mixed with a first raw material, heated and melted, and then regranulated, heated and melted, and then extruded by an extruder to form the coating.
  • the first raw material is polypropylene (PP).
  • the ingredients of the raw materials include polypropylene (PP) and polyethylene (PE).
  • the primary raw material comprises 80 to 90% of polypropylene (PP) and 10 to 20% of polyethylene
  • the olefin (PE) the ratio of the first raw material to the second raw material is 80 to 92: 8 to 20.
  • the primary raw material can be uniformly formed into the second raw material, and after the second mixing and regranulation process, the first raw material and the second raw material can be thoroughly mixed and A uniform single-grain structure is formed, and the fluidity is improved by the addition of the second raw material, and the Melt flow index is increased.
  • the coating operation is performed, the single-grain structure can be quickly and evenly dispersed on the paper, each The single-grain structure is uniform, and when the laminar structure is formed, the quality is uniform and it is not easy to produce defective products.
  • the most important thing is that the heat-resistant temperature of the coating is higher than that of the conventional technology, and it can hold hot drinks and hot soup without being decomposed by heat. Toxins are harmful to health.
  • the present invention utilizes the mixing of two specific mixing ratios, so that the polyethylene and the polypropylene can be sufficiently mixed and uniformly distributed, and therefore, the prepared film has a good film. Mobility and yield, and the calculated ratio of polyethylene to the overall is quite low, significantly reducing the risk of releasing toxins after heating.
  • the method for producing a paper coating and the composition of the paper coating provided by the present invention can withstand high temperature and is less prone to explain toxins by containing hot drinks, and the coating material has better flow than conventional techniques. Sex (Ml value), so it can spread the paper more evenly and slow down the hardening time.
  • the finished product has light weight and better yield and quality, which is a progressive effect.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

一种淋膜纸材的制造方法及淋膜纸材，该方法包括以下步骤：将包含聚丙烯（PP）与聚乙烯（PE）的初原料经混炼与再制粒形成第二原料，以聚丙烯（PP）为第一原料与该第二原料混合后加热熔融并再制粒，将经过再制粒的原料加热熔融，经押出机押出后形成淋膜，并将该淋膜披覆于纸材表面；并由此形成一种耐高温的淋膜纸材。

Description

一种淋膜纸材的制造方法及淋膜纸材 技术领域
本发明涉及一种纸材淋膜的制造方法与一种纸材淋膜的成分。
背景技术
纸制食品容器为避免液体浸渗纸材， 通常于内外表面覆以一塑料淋膜处理， 以达到防水效果， 而习知的淋膜通常使用聚乙烯 （PE) 为主要成分， 聚乙烯流动 性佳， 容易平均地披覆于纸材上， 然而， 聚乙烯耐热温度仅止于约 60°C， 仅能适 用于冷饮， 若盛装热饮， 淋膜即可能分解而释出毒性物质， 造成内容物被污染， 此外， 为避免高能造成淋膜分解， 以聚乙烯为主要成分的淋膜的纸容器无法以微 波加热。
另一方面， 为克服上述缺点， 有少数的纸容器淋膜采用聚丙烯 （PP) 作为原 料， 聚丙烯耐热温度能达到 135°C左右， 足够盛装热饮， 也能进行微波加热， 然 而， 聚丙烯流动性甚差， 当淋膜作业时， 聚丙烯在流动涂布的过程中即遇空气而 硬化成形， 因此， 无法顺利地将聚丙烯原料均匀地布满纸材表面并成形， 或是需 要更大量的原料进行淋膜， 且太快硬化的淋膜品质不均， 易产生多个浓度不均的 区块， 降低了良率， 若为补强品质而进行多次淋膜， 不仅增加重量， 也提高了成 本。
发明内容
本发明的主要目的在于提供一种纸材淋膜的制造方法与一种纸材淋膜的成 分， 以提供较佳的耐热效果， 并具有较佳的良率与产品品质。
为达成上述目的， 本发明提供一种纸材淋膜的制造方法， 包含以下步骤： (a) 将一初原料以混炼方式予以加热熔融与搅拌， 并将初原料再制粒成为一 第二原料， 其中该初原料的成分包含聚丙烯 （PP) 与聚乙烯 （PE);
(b) 将一第一原料与该第二原料混合并加热熔融与搅拌， 其中该第一原料为 聚丙烯 （PP);
(C) 将 (b)步骤搅拌完成的原料进行再制粒；
(d) 将 (c)步骤经再制粒的原料加热熔融；
(e) 将 (d)步骤经加热熔融的原料经押出机押出而形成淋膜；
(f) 将该淋膜披覆于一纸材表面；
其中， （a)步骤中该初原料包括 80〜90%的聚丙烯 （PP) 与 10〜20%的聚乙 烯 （PE)， （b)步骤的第一原料与第二原料的比例为 80〜92： 8〜20。
本发明更提供一种纸材淋膜的成分， 包含一纸材与一披覆于该纸材表面的淋 膜， 其中一初原料经混炼与再制粒后成为一第二原料， 该第二原料再与一第一原 料混合并加热熔融搅拌后， 经再制粒、 加热熔融再经押出机押出而形成该淋膜， 其中该第一原料为聚丙烯（PP) ,该初原料的成分包含聚丙烯（PP)与聚乙烯（PE); 其中， 该初原料包括 80〜90%的聚丙烯 （PP) 与 10〜20%的聚乙烯 （PE), 第一原料与第二原料的比例为 80〜92： 8〜20。
本发明的优点在于：
本发明提供的纸材淋膜能承受较高的温度，因此可盛装热饮，且流动性较佳， 能较均匀地分布于纸材表面， 进而改善品质并提高良率。
附图说明
图 1为本发明的制造流程图。
附图标记 1 第一原料 2第二原料 P1 初原料 P2 混炼 P3 再制粒 S1 混合 S2 加热熔融 S3 搅拌 S4 再制粒 S5 加热熔融 S6 押出机押出
S7 形成淋膜 S8 披覆淋膜于纸材
具体实施方式
以下仅以实施例说明本发明可能的实施态样， 然并非用以限制本发明所欲保 护的范畴， 合先叙明。
请参考图 1， 本发明提供一种纸材淋膜的制造方法， 包含以下步骤：
(a) 将一初原料 PI以混炼 P2方式予以加热熔融与搅拌， 并将初原料再制粒 P3成为一第二原料 2，其中该初原料 P1的成分包含聚丙烯（PP)与聚乙烯（PE);
(b) 将一第一原料 1与一第二原料 2混合 S1并加热熔融 S2与搅拌 S3， 其中 该第一原料 1为聚丙烯 （PP);
(c) 将 (b)步骤搅拌完成的原料进行再制粒 S4;
(d) 将 (c)步骤经再制粒的原料加热熔融 S5;
(e) 将 (d)步骤经加热熔融的原料经押出机押出 S6而形成淋膜 S7;
(f) 披覆淋膜于纸材 S8: 将该淋膜披覆于一纸材表面。
其中， （a)步骤中该初原料包括 80〜90%的聚丙烯 （PP) 与 10〜20%的聚乙 烯 （PE)， （b)步骤的第一原料与第二原料的比例为 80〜92： 8〜20。
因此， 本发明也提供了一种纸材淋膜的成分， 包含一纸材与一披覆于该纸材 表面的淋膜， 其中一初原料经混炼与再制粒后成为一第二原料， 该第二原料再与 一第一原料混合并加热熔融搅拌后， 经再制粒、 加热熔融再经押出机押出而形成 该淋膜， 其中该第一原料为聚丙烯 （PP) , 该初原料的成分包含聚丙烯 （PP) 与 聚乙烯（PE)。 其中， 该初原料包括 80〜90%的聚丙烯（PP) 与 10〜20%的聚乙 烯 （PE)， 而第一原料与第二原料的比例为 80〜92 : 8〜20。
通过第一次混炼与再制粒的过程， 能将初原料均匀形成第二原料， 再经过第 二次混炼与再制粒的过程， 该第一原料与该第二原料能充分混合并形成均匀的单 粒结构， 且由于第二原料的添加使流动性提升， Ml值 （Melt flow index) 增加， 进行淋膜作业时， 单粒结构能快速且平均地分散于纸材上， 每一单粒结构成分均 匀， 形成淋膜结构时， 品质均匀而不易产生不良品， 最重要的是， 该淋膜耐热温 度较习用技术高， 能盛装热饮、 热汤而不会因受热分解而释出毒素， 危害健康。
此外， 由于聚乙烯无法直接与聚丙烯混合均匀， 因此本发明利用两次特定混 合比例的混炼， 使聚乙烯与聚丙烯能充分混合而分布均匀， 因此， 所制成的淋膜 具有良好的流动性与良率， 且经过计算后的聚乙烯占总体的比率相当地低， 大幅 减低加热后释出毒素的风险。
综上所述， 本发明提供的纸材淋膜的制造方法与纸材淋膜的成分， 能耐高温 而较不易因盛装热饮而分解释出毒素， 且淋膜材料具有较习用技术为佳的流动性 (Ml值）， 因此可较均匀地布满纸材， 并减缓硬化时间， 成品具有较轻的重量与 较佳的良率与品质， 实为具有进步的功效。

Claims

权 利 要 求
1、 一种纸材淋膜的制造方法， 其特征在于， 包含以下步骤：
(a) 将一初原料以混炼方式予以加热熔融与搅拌， 并将初原料再制粒成为一 第二原料， 其中该初原料的成分包含聚丙烯与聚乙烯；
(b) 将一第一原料与该第二原料混合并加热熔融与搅拌， 其中该第一原料为 聚丙烯；
(c) 将 (b)步骤搅拌完成的原料进行再制粒；
(d) 将 (c)步骤经再制粒的原料加热熔融；
(e) 将 (d)步骤经加热熔融的原料经押出机押出而形成淋膜；
(f) 将该淋膜披覆于一纸材表面；
其中， （a)步骤中该初原料包括 80〜90%的聚丙烯与 10〜20%的聚乙烯， （b) 步骤的第一原料与第二原料的比例为 80〜92： 8〜20。
2、 一种纸材淋膜的成分， 其特征在于， 包含一纸材与一披覆于该纸材表面 的淋膜， 其中一初原料经混炼与再制粒后成为一第二原料， 该第二原料再与一第 一原料混合并加热熔融搅拌后， 经再制粒、 加热熔融再经押出机押出而形成该淋 膜， 其中该第一原料为聚丙烯， 该初原料的成分包含聚丙烯与聚乙烯；
其中， 该初原料包括 80〜90%的聚丙烯与 10〜20%的聚乙烯， 第一原料与 第二原料以 80〜92： 8〜20的比例混合。
PCT/CN2012/083548 2012-10-26 2012-10-26 一种淋膜纸材的制造方法及淋膜纸材 WO2014063338A1 (zh)

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