CN109306097A - 一种能够降解的塑料薄膜的制造方法 - Google Patents

一种能够降解的塑料薄膜的制造方法 Download PDF

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CN109306097A
CN109306097A CN201710618130.5A CN201710618130A CN109306097A CN 109306097 A CN109306097 A CN 109306097A CN 201710618130 A CN201710618130 A CN 201710618130A CN 109306097 A CN109306097 A CN 109306097A
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film
polyvinyl chloride
reclaimed materials
plastic film
polylactic acid
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江翠萍
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Fushun Nanjing Plastic Industry Co Ltd
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    • 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
    • C08L23/06—Polyethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/20—Recycled plastic

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  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
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Abstract

本发明提供一种能够降解的塑料薄膜的制造方法，(1)备料，选择薄膜级聚乙烯、薄膜级聚乳酸、聚乙二醇、亚磷酸三苯酯、聚氯乙烯薄膜回收料；(2)对聚氯乙烯薄膜回收料进行清洗、除杂、干燥；(3)将各原料进行混合，得到混合料；(4)将混合料注入塑料吹膜机的料仓，进行融化后挤出成膜；(5)成卷、裁剪、检测后打包制得成品。本发明中，除了采用聚乳酸外，还采用了一部分聚氯乙烯薄膜回收料，这些聚氯乙烯薄膜回收料在加热后能够与聚乳酸均匀的混合，并形成部分接枝反应，当这些塑料薄膜被废弃后，在一定温度及微生物的作用下，仍会产生分解，其中的聚氯乙烯部分也会同步降解，采用这种方法可以消耗一定量的非降解塑料薄膜。

Description

一种能够降解的塑料薄膜的制造方法
技术领域
本发明具体涉及一种能够降解的塑料薄膜的制造方法。
背景技术
采用塑料薄膜制作的塑料袋及相关制品具有轻、薄、透明、低成本等特点，给人们的生产和生活带来了极大的方便，随着塑料薄膜的广泛使用，对环境造成了污染，为了降低塑料薄膜对环境的污染，人们制成了可降解塑料薄膜，但是对于一些行业来说，由于特征的要求，在目前仍无法使用可降解塑料薄膜，非降解塑料薄膜仍大量存在，如何将这些非降解塑料薄膜妥善地处理，也称为目前的一个较大的问题。
发明内容
本发明的目的在于提供一种能够降解的塑料薄膜的制造方法，该制造方法能够有效地利用现有的非降解塑料薄膜来制作能够降解的塑料薄膜，以降低塑料薄膜对环境的污染量，该制造方法具体包括如下步骤：
(1)备料，选择薄膜级聚乙烯、薄膜级聚乳酸、聚乙二醇、亚磷酸三苯酯、聚氯乙烯薄膜回收料；
(2)对聚氯乙烯薄膜回收料进行清洗、除杂、干燥；
(3)将各原料进行混合，得到混合料；
(4)将混合料注入塑料吹膜机的料仓，进行融化后挤出成膜；
(5)成卷、裁剪、检测后打包制得成品。
进一步，各原料的重量比如下：薄膜级聚乙烯50-60％、薄膜级聚乳酸20-30％、聚乙二醇5-6％、亚磷酸三苯酯0.5-2％、聚氯乙烯薄膜回收料10-15。
优选地，所述干燥温度为50-70℃。
进一步，所述塑料吹膜机采用螺杆挤压机，从加料端到出口端，融化温度分为三个阶段，分别为120-130℃、140-150℃和160-180℃。
聚乳酸具有良好的抗拉强度和延展性，所制成的薄膜具有良好的光泽性和延展性，聚乳酸薄膜在常温下性能稳定，在环境温度高于55℃或在富氧及微生物的作用下会自动分解。废弃的聚乳酸薄膜能被自然界的微生物完全降解，生成水和二氧化碳，本发明中，除了采用聚乳酸外，还采用了一部分聚氯乙烯薄膜回收料，这些聚氯乙烯薄膜回收料在加热后能够与聚乳酸均匀的混合，并形成部分接枝反应，当这些塑料薄膜被废弃后，在一定温度及微生物的作用下，仍会产生分解，其中的聚氯乙烯部分也会同步降解，采用这种方法可以消耗一定量的非降解塑料薄膜。
具体实施方式
实施例1
1#塑料薄膜的制造，包括如下步骤：
(1)备料，取薄膜级聚乙烯50公斤、薄膜级聚乳酸29公斤、聚乙二醇5公斤、亚磷酸三苯酯1公斤、聚氯乙烯薄膜回收料15公斤；
(2)对聚氯乙烯薄膜回收料进行清洗、除杂，在50-60℃下干燥3小时；
(3)将各原料进行混合，得到混合料；
(4)将混合料注入采用螺杆挤压机的塑料吹膜机的料仓，进行融化后挤出成膜，从加料端到出口端，融化温度分为三个阶段，分别为120-125℃、140-145℃和160-170℃；
(5)成卷、裁剪、检测后打包制得成品。
实施例2
2#塑料薄膜的制造，包括如下步骤：
(1)备料，取薄膜级聚乙烯60公斤、薄膜级聚乳酸22公斤、聚乙二醇6公斤、亚磷酸三苯酯2公斤、聚氯乙烯薄膜回收料10公斤；
(2)对聚氯乙烯薄膜回收料进行清洗、除杂，在60-70℃下干燥3小时；
(3)将各原料进行混合，得到混合料；
(4)将混合料注入采用螺杆挤压机的塑料吹膜机的料仓，进行融化后挤出成膜，从加料端到出口端，融化温度分为三个阶段，分别为124-130℃、145-150℃和170-180℃；
(5)成卷、裁剪、检测后打包制得成品。

Claims (4)

1.一种能够降解的塑料薄膜的制造方法，其特征在于，包括如下步骤：
(1)备料，选择薄膜级聚乙烯、薄膜级聚乳酸、聚乙二醇、亚磷酸三苯酯、聚氯乙烯薄膜回收料；
(2)对聚氯乙烯薄膜回收料进行清洗、除杂、干燥；
(3)将各原料进行混合，得到混合料；
(4)将混合料注入塑料吹膜机的料仓，进行融化后挤出成膜；
(5)成卷、裁剪、检测后打包制得成品。
2.根据权利要求1所述的制造方法，其特征在于，各原料的重量比如下：
薄膜级聚乙烯50-60％、薄膜级聚乳酸20-30％、聚乙二醇5-6％、亚磷酸三苯酯0.5-2％、聚氯乙烯薄膜回收料10-15。
3.根据权利要求1所述的制造方法，其特征在于，所述干燥温度为50-70℃。
4.根据权利要求1所述的制造方法，其特征在于，所述塑料吹膜机采用螺杆挤压机，从加料端到出口端，融化温度分为三个阶段，分别为120-130℃、140-150℃和160-180℃。
CN201710618130.5A 2017-07-26 2017-07-26 一种能够降解的塑料薄膜的制造方法 Withdrawn CN109306097A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111073236A (zh) * 2019-12-12 2020-04-28 顺德区均安镇苏汉玉塑料制品厂 一种环保塑料袋的制备方法
CN111138819A (zh) * 2020-03-01 2020-05-12 张小飞 一种塑料薄膜
CN111312061A (zh) * 2020-03-26 2020-06-19 上海福助工业有限公司 一种防伪薄膜及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103044747A (zh) * 2012-12-13 2013-04-17 新昌县冠阳技术开发有限公司 一种环保型绿色塑料袋制品

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103044747A (zh) * 2012-12-13 2013-04-17 新昌县冠阳技术开发有限公司 一种环保型绿色塑料袋制品

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111073236A (zh) * 2019-12-12 2020-04-28 顺德区均安镇苏汉玉塑料制品厂 一种环保塑料袋的制备方法
CN111138819A (zh) * 2020-03-01 2020-05-12 张小飞 一种塑料薄膜
CN111312061A (zh) * 2020-03-26 2020-06-19 上海福助工业有限公司 一种防伪薄膜及其制备方法

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Application publication date: 20190205