CN107312272A - 聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法 - Google Patents

聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法 Download PDF

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CN107312272A
CN107312272A CN201710673063.7A CN201710673063A CN107312272A CN 107312272 A CN107312272 A CN 107312272A CN 201710673063 A CN201710673063 A CN 201710673063A CN 107312272 A CN107312272 A CN 107312272A
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vinyl acetate
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孟永华
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    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
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Abstract

本发明涉及一种聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法,属于高分子膜技术领域。其首先在五辊压延机生产线生产出基材,然后在拉伸机生产线上对基材进行扩幅拉升,使横向收缩膜率达40%~55%,即得产品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。本发明制备所得的聚氯乙烯/氯醋树脂共混半哑光热收缩膜在印刷性能方面优越,作为防伪标识贴合粘结力较强。

Description

聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法
技术领域
本发明涉及一种聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法,具体涉及一种用于制作各类高档标签及防伪标签用的收缩膜,属于高分子膜技术领域。
背景技术
随着科学技术的不断发展及新技术的不断应用,生活水平的不断提高,对各类标签膜、防伪膜在美观上,防伪性能等方面提出新需求,目前市场最普遍使用的PVC硬质收缩膜是二面光的光膜,在印刷性能方面比较差,油墨易脱落,防伪标识贴合粘结力比较差,标签表面外观比较光等方面存在缺点。
发明内容
本发明的目的是克服上述不足之处,提供一种在印刷性能方面优越防伪标识贴合粘结力较强的聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法。
本发明的技术方案,聚氯乙烯/氯醋树脂共混半哑光热收缩膜,配方比例按重量份计如下:聚氯乙烯70~75份、氯醋树脂12~20份、增强剂7~9份、热稳定剂1.5~2份、润滑剂1~1.5份和加工助剂2~2.2份;
首先在五辊压延机生产线生产出基材,然后在拉伸机生产线上对基材进行扩幅拉升,使横向收缩膜率达40%~55%,即得产品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。
所述氯醋树脂为氯乙烯-醋酸乙烯共聚树脂,其中醋酸乙烯含量为10%-11%。
所述增强剂为甲基丙烯酸甲酯、丁二烯和苯乙烯的共聚物。
所述热稳定剂为硫醇甲基锡。
所述润滑剂为饱和脂肪酸。
所述加工助剂为加工助剂ACR。
所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜的制备方法,按重量份计步骤如下:
(1)熔融:按照聚氯乙烯70~75份、氯醋树脂12~20份、增强剂7~9份、热稳定剂1.5~2份、润滑剂1~1.5份和加工助剂2~2.2份配料,随后放入高速搅拌机,充分搅拌混合均匀,搅拌至料温102~112℃;
(2)冷却物料:将步骤(1)所得物料放至低速冷却搅拌机,使料温降至40~50℃;
(3)挤出塑化:取步骤(2)冷却好的物料均匀输入行星挤出机塑化,行星挤出机温度控制在145~160℃;
(4)压延:取步骤(3)所得塑化好的熔融物料均匀地送入压延机压延成片材,压延辊温度控制在160~185℃;
(5)引力片材:由引离冷却系统中引离辊把步骤(4)压延形成的片材从压延辊剥离;
(6)冷却定型:取步骤(5)所得片材经冷却辊冷却定型,引离辊温度控制在110~90℃,冷却辊温度控制在80~40℃,辊轮温度设定从高到低,最后一组冷却辊冷却温度设定为40℃;
(7)后处理:经步骤(6)冷却定型的片材由中心收卷机收卷、包装,得到收缩膜初品;
(8)拉伸加工:对步骤(7)所得收缩膜初品进行加工处理,经拉伸机作扩幅处理,使基片的加热收缩率为横向40%~55%,纵向≤3%;再经脱膜冷却定型,收卷,精切制得成品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。
对所述压延机辊轮进行喷砂处理,使辊轮表面粗糙度Ra值为1.5~2.0μm,另一辊轮为镜面。
步骤(8)中,所需产品收缩率根据需求可在拉伸机对基片的拉伸倍数作设计,拉伸机温度控制,控温一区90℃,控温二区95℃,控温三区95℃,控温四区95℃,控温五区60℃。
本发明先在五辊压延机生产线生产出基材,然后在拉伸机生产线上对基材进行扩幅拉升,使横向收缩膜率达40%~55%。
本发明的有益效果:本发明制备所得的聚氯乙烯/氯醋树脂共混半哑光热收缩膜在印刷性能方面优越,作为防伪标识贴合粘结力较强。
具体实施方式
实施1:聚氯乙烯/氯醋树脂共混半哑光热收缩膜
备料:称取聚氯乙烯720kg,氯醋树脂150kg,加工助剂20kg,增强剂80kg,热稳定剂15kg,润滑剂15kg。
加工工艺:
1、熔融:按配比将上述各种原料放入高速搅拌机,充分搅拌混合均匀,并搅拌至料温102℃;
2、冷却物料:把高速搅拌好的物料排放至低速冷却搅拌机冷却搅拌,使料温降至40℃;
3、挤出塑化:把冷却好的物料均匀输入行星挤出机塑化,行星挤出机温度控制在145℃;
4、压延:经行星挤出机塑化好熔融物料均匀地送入五辊压延机压延,根据客户所需材料厚度控制好辊轮间隙,同时压延辊温度控制在160℃;
5、引力片材:由引离冷却系统中引离辊把步骤(4)所形成之片材从压延辊剥离;
6、冷却定型:经冷却辊冷却定型,引离辊温度控制在110℃,冷却辊温度控制在80~40℃,辊轮温度设定从高到低,最后一组冷却辊冷却温度设定为40℃。由自动测厚装置检测厚度,如发现所检出厚度超标,自动测厚装置会反馈至压延机自动调节辊轮间隙达到所需厚度。
7、收卷:经冷却定型的片材由中心收卷机收卷、包装。
实施例2
实施例2和实施例1的不同之处仅在于各原料的配比不同:称取聚氯乙烯700kg,氯醋树脂170kg,加工助剂20kg,增强剂75kg,热稳定剂20kg,润滑剂15kg。
其余同实施例1。
实施例3:
实施例3和实施例1的不同之处仅在于各原料的配比不同:称取聚录乙烯750kg,氯醋树脂110kg,加工助剂20kg,增强剂85kg,热稳定剂20kg,润滑剂15kg。
其中氯醋树脂为氯乙烯—醋酸乙烯的共聚物。加工助剂是ACR。增强剂为甲基丙烯酸甲酯与丁二烯和苯乙烯的共聚物,代号为MBS。热稳定剂是硫醇甲基锡。润滑剂是饱和脂肪酸。
其物理机械性能测试数据如下表1所示:
表1
实施例4
聚氯乙烯/氯醋树脂共混半哑光热收缩膜,配方比例按重量份计如下:聚氯乙烯730kg、氯醋树脂150kg、增强剂80kg、热稳定剂18kg、润滑剂15kg和加工助剂22kg;
所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜的制备方法,按重量份计步骤如下:
(1)熔融:按照上述配方配料随后放入高速搅拌机,充分搅拌混合均匀,搅拌至料温112℃;
(2)冷却物料:将步骤(1)所得物料放至低速冷却搅拌机,使料温降至50℃;
(3)挤出塑化:取步骤(2)冷却好的物料均匀输入行星挤出机塑化,行星挤出机温度控制在160℃;
(4)压延:取步骤(3)所得塑化好的熔融物料均匀地送入压延机压延成片材,压延辊温度控制在185℃;
(5)引力片材:由引离冷却系统中引离辊把步骤(4)压延形成的片材从压延辊剥离;
(6)冷却定型:取步骤(5)所得片材经冷却辊冷却定型,引离辊温度控制在90℃,冷却辊温度控制在80~40℃,辊轮温度设定从高到低,最后一组冷却辊冷却温度设定为40℃;
(7)后处理:经步骤(6)冷却定型的片材由中心收卷机收卷、包装,得到收缩膜初品;
(8)拉伸加工:对步骤(7)所得收缩膜初品进行加工处理,经拉伸机作扩幅处理,使基片的加热收缩率为横向55%,纵向≤3%;再经脱膜冷却定型,收卷,精切制得成品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。
对所述压延机辊轮进行喷砂处理,使辊轮表面粗糙度Ra值为2.0μm,另一辊轮为镜面。
步骤(8)中,所需产品收缩率根据需求可在拉伸机对基片的拉伸倍数作设计,拉伸机温度控制,控温一区90℃,控温二区95℃,控温三区95℃,控温四区95℃,控温五区60℃。
本发明先在五辊压延机生产线生产出基材,然后在拉伸机生产线上对基材进行扩幅拉升,使横向收缩膜率达55%。
实施例5
聚氯乙烯/氯醋树脂共混半哑光热收缩膜,配方比例按重量份计如下:聚氯乙烯730kg、氯醋树脂180kg、增强剂80kg、热稳定剂18kg、润滑剂12kg和加工助剂21kg;
所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜的制备方法,按重量份计步骤如下:
(1)熔融:按照配方比例将上述原料放入高速搅拌机,充分搅拌混合均匀,搅拌至料温108℃;
(2)冷却物料:将步骤(1)所得物料放至低速冷却搅拌机,使料温降至45℃;
(3)挤出塑化:取步骤(2)冷却好的物料均匀输入行星挤出机塑化,行星挤出机温度控制在152℃;
(4)压延:取步骤(3)所得塑化好的熔融物料均匀地送入压延机压延成片材,压延辊温度控制在175℃;
(5)引力片材:由引离冷却系统中引离辊把步骤(4)压延形成的片材从压延辊剥离;
(6)冷却定型:取步骤(5)所得片材经冷却辊冷却定型,引离辊温度控制在100℃,冷却辊温度控制在80~40℃,辊轮温度设定从高到低,最后一组冷却辊冷却温度设定为40℃;
(7)后处理:经步骤(6)冷却定型的片材由中心收卷机收卷、包装,得到收缩膜初品;
(8)拉伸加工:对步骤(7)所得收缩膜初品进行加工处理,经拉伸机作扩幅处理,使基片的加热收缩率为横向50%,纵向≤3%;再经脱膜冷却定型,收卷,精切制得成品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。
对所述压延机辊轮进行喷砂处理,使辊轮表面粗糙度Ra值为1.5~2.0μm,另一辊轮为镜面。
步骤(8)中,所需产品收缩率根据需求可在拉伸机对基片的拉伸倍数作设计,拉伸机温度控制,控温一区90℃,控温二区95℃,控温三区95℃,控温四区95℃,控温五区60℃。
本发明先在五辊压延机生产线生产出基材,然后在拉伸机生产线上对基材进行扩幅拉升,使横向收缩膜率达50%。

Claims (9)

1.聚氯乙烯/氯醋树脂共混半哑光热收缩膜,其特征是配方比例按重量份计如下:聚氯乙烯70~75份、氯醋树脂12~20份、增强剂7~9份、热稳定剂1.5~2份、润滑剂1~1.5份和加工助剂2~2.2份;
首先在五辊压延机生产线生产出基材,然后在拉伸机生产线上对基材进行扩幅拉升,使横向收缩膜率达40%~55%,即得产品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。
2.如权利要求1所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜,其特征是:所述氯醋树脂为氯乙烯-醋酸乙烯共聚树脂,其中醋酸乙烯含量为10%-11%。
3.如权利要求1所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜,其特征是:所述增强剂为甲基丙烯酸甲酯、丁二烯和苯乙烯的共聚物。
4.如权利要求1所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜,其特征是:所述热稳定剂为硫醇甲基锡。
5.如权利要求1所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜,其特征是:所述润滑剂为饱和脂肪酸。
6.如权利要求1所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜,其特征是:所述加工助剂为加工助剂ACR。
7.权利要求1所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜的制备方法,其特征是按重量份计步骤如下:
(1)熔融:按照聚氯乙烯70~75份、氯醋树脂12~20份、增强剂7~9份、热稳定剂1.5~2份、润滑剂1~1.5份和加工助剂2~2.2份配料,随后放入高速搅拌机,充分搅拌混合均匀,搅拌至料温102~112℃;
(2)冷却物料:将步骤(1)所得物料放至低速冷却搅拌机,使料温降至40~50℃;
(3)挤出塑化:取步骤(2)冷却好的物料均匀输入行星挤出机塑化,行星挤出机温度控制在145~160℃;
(4)压延:取步骤(3)所得塑化好的熔融物料均匀地送入压延机压延成片材,压延辊温度控制在160~185℃;
(5)引力片材:由引离冷却系统中引离辊把步骤(4)压延形成的片材从压延辊剥离;
(6)冷却定型:取步骤(5)所得片材经冷却辊冷却定型,引离辊温度控制在110~90℃,冷却辊温度控制在80~40℃,辊轮温度设定从高到低,最后一组冷却辊冷却温度设定为40℃;
(7)后处理:经步骤(6)冷却定型的片材由中心收卷机收卷、包装,得到收缩膜初品;
(8)拉伸加工:对步骤(7)所得收缩膜初品进行加工处理,经拉伸机作扩幅处理,使基片的加热收缩率为横向40%~55%,纵向≤3%;再经脱膜冷却定型,收卷,精切制得成品聚氯乙烯/氯醋树脂共混半哑光热收缩膜。
8.如权利要求7所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜的制备方法,其特征是:对所述压延机辊轮进行喷砂处理,使辊轮表面粗糙度Ra值为1.5~2.0μm,另一辊轮为镜面。
9.如权利要求7所述聚氯乙烯/氯醋树脂共混半哑光热收缩膜的制备方法,其特征是:步骤(8)中,所需产品收缩率根据需求可在拉伸机对基片的拉伸倍数作设计,拉伸机温度控制,控温一区90℃,控温二区95℃,控温三区95℃,控温四区95℃,控温五区60℃。
CN201710673063.7A 2017-08-09 2017-08-09 聚氯乙烯/氯醋树脂共混半哑光热收缩膜及其制备方法 Pending CN107312272A (zh)

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