CN110509647B - 一种高强度的流延式tpu薄膜及其生产工艺 - Google Patents
一种高强度的流延式tpu薄膜及其生产工艺 Download PDFInfo
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Abstract
本发明公开了一种高强度的流延式TPU薄膜及其生产工艺,该流延式TPU薄膜包括上膜、下膜和位于上膜和下膜之间的粘合层,该工艺包括上膜和下膜的制备、粘合液的制备以及上膜和下膜的压合,本发明中的TPU薄膜通过两层薄膜整合,该TPU薄膜整体的强度高,通过在上膜和下膜的制备原料中添加聚酰胺树脂和线性聚乙烯进行混合,从而提高上膜和下膜的强度,通过在粘合液的制备原料中添加玻璃纤维,使得粘合液在固化成粘合层后其本身的强度和韧性得到大大增强;该薄膜压合装置集制备粘合液和压合薄膜的功能于一体,能够快速地生产出TPU薄膜,该薄膜压合装置可以自动对上膜涂抹粘合液,涂抹均匀,从而保证TPU薄膜的质量。
Description
技术领域
本发明涉及TPU薄膜生产技术领域,尤其涉及一种高强度的流延式TPU薄膜及其生产工艺。
背景技术
TPU,热可塑性TPU弹性体,由于弹性好、物性佳、各种机械强度都很好,因此,广泛用于射出、押出、压延及溶解成溶液型树脂等加工方式,是塑胶加工业者经常使用的塑胶材料,其制成产品涵盖了工业应用和民用必需品的范围,流延式TPU薄膜是在TPU颗粒料基础上,经流延工艺制成的薄膜;
专利文件(CN109501401A)公开了一种高强度耐磨TPU复合面料,包括基布和覆合在基布表面的TPU薄膜;将竹浆纤维和涤纶低弹丝按双罗纹组织在双面大圆机编织,织造成基布;将TPU薄膜采用无张力复合于基布的表面得到高强度耐磨TPU复合面料,该TPU复合面料通过在基布的一侧设置TPU薄膜来提高整体强度,但基布只有一侧设有薄膜,另一侧的润滑度大大降低,从而造成其适用范围大大降低,无法满足不同的使用需求,该TPU复合面料在生产过程中需要用涂抹机来涂抹涂膜液,操作较为复杂,不便于使用。
发明内容
本发明的目的在于提供一种高强度的流延式TPU薄膜及其生产工艺,本发明中的TPU薄膜含有两层薄膜,整体强度高,通过在上膜和下膜的制备原料中添加聚酰胺树脂和线性聚乙烯进行混合来提高上膜和下膜的强度,通过在粘合液的制备原料中添加玻璃纤维,使得粘合液在固化成粘合层后其本身的强度和韧性得到大大增强,解决了现有TPU薄膜强度低,光滑度低,适用性差的技术问题;
本发明中薄膜压合装置集制备粘合液和压合薄膜的功能于一体,使用方便,能够快速地生产出TPU薄膜,该薄膜压合装置可以自动对上膜涂抹粘合液,涂抹均匀,同时降低了劳动强度,解决了现有TPU薄膜过程中人为涂抹不均匀从而影响TPU薄膜质量以及操作复杂的技术问题。
本发明的目的可以通过以下技术方案实现:
一种高强度的流延式TPU薄膜,包括上膜、下膜和位于上膜和下膜之间的粘合层;
该流延式TPU薄膜通过下述步骤制得:
步骤一、将20-30份TPU颗粒放入温度为75-120℃的烘箱中进行干燥和烘干,烘干时间为2-3h,然后将烘干的TPU颗粒放入加热容器中加热30-45min,加热温度为110-130℃,熔化后向加热容器中加入6-10份聚酰胺树脂、3-5份二氧化硅、5-8份线性聚乙烯、4-6份天然多酚、5-10份环氧树脂和1-2份光稳定剂,调节温度至150-175℃,在450-600r/min的转速下搅拌15min,得到熔融的混合物,然后将熔融的混合物放入流延机中流延成膜并通过薄膜压合装置中的上膜放料辊和下膜放料辊分别收卷得到上膜和下膜;
步骤二、将25-30份环氧树脂、15-20份氯化橡胶、5-8份玻璃纤维、3-6份粘性增强剂、2-5份乙酸乙酯、35-40份去离子水从进料口加入搅拌机中,在500-650r/min的转速下搅拌30min,得到粘合液,粘合液通过导液管进入容置槽内;
步骤三、通过第一放料电机带动上膜放料辊转动并开始放料,通过涂抹电机带动涂抹辊附着容置槽内的粘合液并对上膜的底部进行均匀涂抹,通过第二放料电机带动下膜放料辊放料,上膜和下膜通过经过下压辊和上压辊之间时,下压辊和上压辊挤压贴合在一起并经过加热辊加热,使上膜和下膜之间的粘液烘干固化成粘合层,并使上膜和下膜固定贴合得到高强度的流延式TPU薄膜,并通过冷却辊冷却后通过收料辊进行收卷。
一种高强度的流延式TPU薄膜的生产工艺,该工艺的具体步骤为:
步骤一、将20-30份TPU颗粒放入温度为75-120℃的烘箱中进行干燥和烘干,烘干时间为2-3h,然后将烘干的TPU颗粒放入加热容器中加热30-45min,加热温度为110-130℃,熔化后向加热容器中加入6-10份聚酰胺树脂、3-5份二氧化硅、5-8份线性聚乙烯、4-6份天然多酚、5-10份环氧树脂和1-2份光稳定剂,调节温度至150-175℃,在450-600r/min的转速下搅拌15min,得到熔融的混合物,然后将熔融的混合物放入流延机中流延成膜并通过薄膜压合装置中的上膜放料辊和下膜放料辊分别收卷得到上膜和下膜;
步骤二、将25-30份环氧树脂、15-20份氯化橡胶、5-8份玻璃纤维、3-6份粘性增强剂、2-5份乙酸乙酯、35-40份去离子水从进料口加入搅拌机中,在500-650r/min的转速下搅拌30min,得到粘合液,粘合液通过导液管进入容置槽内;
步骤三、通过第一放料电机带动上膜放料辊转动并开始放料,通过涂抹电机带动涂抹辊附着容置槽内的粘合液并对上膜的底部进行均匀涂抹,通过第二放料电机带动下膜放料辊放料,上膜和下膜通过经过下压辊和上压辊之间时,下压辊和上压辊挤压贴合在一起并经过加热辊加热,使上膜和下膜之间的粘液烘干固化成粘合层,并使上膜和下膜固定贴合得到高强度的流延式TPU薄膜,并通过冷却辊冷却后通过收料辊进行收卷。
进一步的,所述TPU颗粒由二苯基甲烷二异氰酸酯25-28份、甲苯二异氰酸酯17-20份、大分子多元醇15-18份、低分子多元醇6-7份和交联剂3-5份构成。
进一步的,所述TPU颗粒的粒径为0.03-0.05mm。
进一步的,所述加热辊的加热温度为37-43℃。
进一步的,所述流延机的内部温度为180-210℃。
进一步的,所述薄膜压合装置在使用时,将粘合液制备原料从搅拌机顶部的进料口加入,通过搅拌机搅拌并制得粘合液,打开导液管上的控制阀,粘合液通过导液管向下流入容置槽的内侧;
启动第一放料电机,第一放料电机带动上膜放料辊转动并开始放料,上膜经过导向辊的下方并与涂抹辊外周面的顶部紧密贴合,启动涂抹辊一端连接的涂抹电机,涂抹电机带动涂抹辊转动,涂抹辊的外周面粘有粘合液并对上膜的底部进行均匀涂抹;
涂抹有粘合液的上膜穿过壳体的一侧槽口并通过下压辊和上压辊之间,启动第二放料电机,第二放料电机带动下膜放料辊放料,使下膜经过下压辊和上压辊之间,上膜和下膜通过下压辊和上压辊挤压贴合在一起并经过加热辊加热,使上膜和下膜之间的粘液烘干定形,并通过冷却辊冷却后通过收料辊进行收卷。
本发明的有益效果:
本发明中的TPU薄膜是通过在两层相同原料制备得到的流延膜中间添加粘合液制成,两层薄膜的整合大大提高了该TPU薄膜整体的强度,通过在上膜和下膜的制备原料中添加聚酰胺树脂和线性聚乙烯进行混合,从而提高上膜和下膜的强度,通过在粘合液的制备原料中添加玻璃纤维,使得粘合液在固化成粘合层后其本身的强度和韧性得到大大增强;
本发明通过薄膜压合装置的顶部设置用于搅拌生成粘合液的搅拌机,并通过设置导液管将搅拌机内的粘合液导入下方的容置槽内,通过在容置槽上方设置涂抹辊对上膜的底部进行自动涂抹,通过设置上压辊和下压辊对上膜和下膜进行挤压整合,通过加热辊对整合的薄膜烘干成型,该薄膜压合装置集制备粘合液和压合薄膜的功能于一体,使用方便,能够快速地生产出TPU薄膜,工作效率高,而且该薄膜压合装置可以自动对上膜涂抹粘合液,涂抹均匀,从而保证TPU薄膜的质量,同时降低了劳动强度。
附图说明
为了便于本领域技术人员理解,下面结合附图对本发明作进一步的说明。
图1为本发明一种高强度的流延式TPU薄膜的结构示意图;
图2为本发明中薄膜压合装置的结构示意图;
图3为本发明中薄膜压合装置的结构剖面图。
图中:1、壳体;101、槽口;2、上膜放料辊;3、涂抹辊;4、容置槽;5、搅拌机;51、进料口;6、上膜;7、支撑板;8、下膜放料辊;9、下压辊;10、上压辊;11、收料辊;12、导向辊;13、下膜;14、第一放料电机;15、第二放料电机;16、收料电机;17、支架;18、导液管;19、加热辊;20、冷却辊;21、粘合层。
具体实施方式
下面将结合实施例对本发明的技术方案进行清楚、完整地描述,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作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
如图1-3所示,一种高强度的流延式TPU薄膜,包括上膜6、下膜13和位于上膜6和下膜13之间的粘合层21。
一种高强度的流延式TPU薄膜的生产工艺,该工艺的具体步骤为:
步骤一、将20-30份TPU颗粒放入温度为75-120℃的烘箱中进行干燥和烘干,烘干时间为2-3h,然后将烘干的TPU颗粒放入加热容器中加热30-45min,加热温度为110-130℃,熔化后向加热容器中加入6-10份聚酰胺树脂、3-5份二氧化硅、5-8份线性聚乙烯、4-6份天然多酚、5-10份环氧树脂和1-2份光稳定剂,调节温度至150-175℃,在450-600r/min的转速下搅拌15min,得到熔融的混合物,然后将熔融的混合物放入流延机中流延成膜并通过上膜放料辊2和下膜放料辊8分别收卷成上膜6和下膜13;
步骤二、将25-30份环氧树脂、15-20份氯化橡胶、5-8份玻璃纤维、3-6份粘性增强剂、2-5份乙酸乙酯、35-40份去离子水从进料口51加入搅拌机5中,在500-650r/min的转速下搅拌30min,得到粘合液,粘合液通过导液管18进入容置槽4内;
步骤三、通过第一放料电机14带动上膜放料辊2转动并开始放料,通过涂抹电机带动涂抹辊3附着容置槽4内的粘合液并对上膜6的底部进行均匀涂抹,通过第二放料电机15带动下膜放料辊8放料,上膜6和下膜13通过经过下压辊9和上压辊10之间时,下压辊9和上压辊10挤压贴合在一起并经过加热辊19加热,使上膜6和下膜13之间的粘液烘干定形,并通过冷却辊20冷却后通过收料辊11进行收卷。
所述TPU颗粒由二苯基甲烷二异氰酸酯25-28份、甲苯二异氰酸酯17-20份、大分子多元醇15-18份、低分子多元醇6-7份和交联剂3-5份构成。
所述TPU颗粒的粒径为0.03-0.05mm。
所述加热辊19的加热温度为37-43℃。
所述流延机的内部温度为180-210℃。
所述薄膜压合装置包括壳体1,所述壳体1的两端均开设有槽口101,所述壳体1的内侧转动连接有上膜放料辊2,所述上膜放料辊2用于对上膜6放料,所述上膜放料辊2的一侧设置有两个导向辊12,两个所述导向辊12之间设置有涂抹辊3,所述壳体1的下侧内壁对应涂抹辊3所在位置处固定安装有装有粘合液的容置槽4,所述涂抹辊3的底部位于容置槽4内,所述壳体1的顶部固定安装有搅拌机5,所述搅拌机5的底部固定安装有导液管18,导液管18上安装有控制阀,所述导液管18的底端贯穿壳体1的侧壁并延伸至壳体1的内侧且与容置槽4相连通;
所述壳体1的一侧设置有两个平行且纵向分布的支撑板7,两个所述支撑板7之间且靠近壳体1的位置处转动连接有下膜放料辊8,所述下膜放料辊8位于上膜6的下方,所述下膜放料辊8的一侧设置有下压辊9,所述下压辊9的正上方设置有上压辊10,所述下压辊9和上压辊10均位于两个支撑板7之间,两个所述导向辊12以及涂抹辊3均位于同一水平高度,所述壳体1底面的四个拐角位置处均固定安装有支架17,所述下压辊9远离下膜放料辊8的一侧设置有加热辊19,所述加热辊19远离下压辊9的一侧设置有冷却辊20,所述冷却辊20中含有冷却循环水,两个所述支撑板7之间且远离壳体1的位置处转动连接有收料辊11。
所述壳体1的一侧外壁固定安装有第一放料电机14,所述第一放料电机14用于带动上膜放料辊2转动,所述第一放料电机14的输出轴端与上膜放料辊2的一端固定连接,所述壳体1的另一侧外壁对应涂抹辊3所在位置处固定安装有用于带动涂抹辊3转动的涂抹电机。
其中一个所述支撑板7的外壁处固定安装有第二放料电机15和收料电机16,所述第二放料电机15的输出轴端与下膜放料辊8的一端固定连接,所述收料电机16的输出轴端与收料辊11的一端固定连接。
所述薄膜压合装置的工作原理为:
将粘合液制备原料从搅拌机5顶部的进料口51加入,通过搅拌机5搅拌并制得粘合液,打开导液管18上的控制阀,粘合液通过导液管18向下流入容置槽4的内侧;
启动第一放料电机14,第一放料电机14带动上膜放料辊2转动并开始放料,上膜6经过导向辊12的下方并与涂抹辊3外周面的顶部紧密贴合,启动涂抹辊3一端连接的涂抹电机,涂抹电机带动涂抹辊3转动,涂抹辊3的外周面粘有粘合液并对上膜6的底部进行均匀涂抹;
涂抹有粘合液的上膜6穿过壳体1的一侧槽口101并通过下压辊9和上压辊10之间,启动第二放料电机15,第二放料电机15带动下膜放料辊8放料,使下膜13经过下压辊9和上压辊10之间,上膜6和下膜13通过下压辊9和上压辊10挤压贴合在一起并经过加热辊19加热,使上膜6和下膜13之间的粘液烘干定形,并通过冷却辊20冷却后通过收料辊11进行收卷。
本发明中的TPU薄膜是通过在两层相同原料制备得到的流延膜中间添加粘合液制成,两层薄膜的整合大大提高了该TPU薄膜整体的强度,通过在上膜6和下膜13的制备原料中添加聚酰胺树脂和线性聚乙烯进行混合,从而提高上膜6和下膜13的强度,通过在粘合液的制备原料中添加玻璃纤维,使得粘合液在固化成粘合层后21其本身的强度和韧性得到大大增强;
本发明通过薄膜压合装置的顶部设置用于搅拌生成粘合液的搅拌机5,并通过设置导液管18将搅拌机5内的粘合液导入下方的容置槽4内,通过在容置槽4上方设置涂抹辊3对上膜6的底部进行自动涂抹,通过设置上压辊10和下压辊10对上膜6和下膜13进行挤压整合,通过加热辊19对整合的薄膜烘干成型,该薄膜压合装置集制备粘合液和压合薄膜的功能于一体,使用方便,能够快速地生产出TPU薄膜,工作效率高,而且该薄膜压合装置可以自动对上膜6涂抹粘合液,涂抹均匀,从而保证TPU薄膜的质量,同时降低了劳动强度。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节,也不限制该发明仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。
Claims (2)
1.一种高强度的流延式TPU薄膜,其特征在于,包括上膜(6)、下膜(13)和位于上膜(6)和下膜(13)之间的粘合层(21);
该流延式TPU薄膜通过下述步骤制得:
步骤一、将20-30份TPU颗粒放入温度为75-120℃的烘箱中进行干燥和烘干,烘干时间为2-3h,然后将烘干的TPU颗粒放入加热容器中加热30-45min,加热温度为110-130℃,熔化后向加热容器中加入6-10份聚酰胺树脂、3-5份二氧化硅、5-8份线性聚乙烯、4-6份天然多酚、5-10份环氧树脂和1-2份光稳定剂,调节温度至150-175℃,在450-600r/min的转速下搅拌15min,得到熔融的混合物并放入流延机中流延成膜并通过薄膜压合装置中的上膜放料辊(2)和下膜放料辊(8)分别收卷得到上膜(6)和下膜(13);
步骤二、将25-30份环氧树脂、15-20份氯化橡胶、5-8份玻璃纤维、3-6份粘性增强剂、2-5份乙酸乙酯、35-40份去离子水从进料口(51)加入搅拌机(5)中,在500-650r/min的转速下搅拌30min,得到粘合液,粘合液通过导液管(18)进入容置槽(4)内;
步骤三、上膜放料辊(2)放料时,通过涂抹电机带动涂抹辊(3)附着容置槽(4)内的粘合液并对上膜(6)的底部进行均匀涂抹,同时下膜放料辊(8)放料,上膜(6)和下膜(13)通过经过下压辊(9)和上压辊(10)之间经过挤压贴合在一起,并经过加热辊(19)加热,使上膜(6)和下膜(13)之间的粘液烘干固化成粘合层(21),并使上膜(6)和下膜(13)固定贴合得到高强度的流延式TPU薄膜,并通过冷却辊(20)冷却后通过收料辊(11)进行收卷;
所述TPU颗粒由二苯基甲烷二异氰酸酯25-28份、甲苯二异氰酸酯17-20份、大分子多元醇15-18份、低分子多元醇6-7份和交联剂3-5份构成;
所述TPU颗粒的粒径为0.03-0.05mm;
所述加热辊(19)的加热温度为37-43℃;
所述流延机的内部温度为180-210℃。
2.一种根据权利要求1所述的高强度的流延式TPU薄膜的生产工艺,其特征在于,该工艺的具体步骤为:
步骤一、将20-30份TPU颗粒放入温度为75-120℃的烘箱中进行干燥和烘干,烘干时间为2-3h,然后将烘干的TPU颗粒放入加热容器中加热30-45min,加热温度为110-130℃,熔化后向加热容器中加入6-10份聚酰胺树脂、3-5份二氧化硅、5-8份线性聚乙烯、4-6份天然多酚、5-10份环氧树脂和1-2份光稳定剂,调节温度至150-175℃,在450-600r/min的转速下搅拌15min,得到熔融的混合物,然后将熔融的混合物放入流延机中流延成膜并通过薄膜压合装置中的上膜放料辊(2)和下膜放料辊(8)分别收卷得到上膜(6)和下膜(13);
步骤二、将25-30份环氧树脂、15-20份氯化橡胶、5-8份玻璃纤维、3-6份粘性增强剂、2-5份乙酸乙酯、35-40份去离子水从进料口(51)加入搅拌机(5)中,在500-650r/min的转速下搅拌30min,得到粘合液,粘合液通过导液管(18)进入容置槽(4)内;
步骤三、通过第一放料电机(14)带动上膜放料辊(2)转动并开始放料,通过涂抹电机带动涂抹辊(3)附着容置槽(4)内的粘合液并对上膜(6)的底部进行均匀涂抹,通过第二放料电机(15)带动下膜放料辊(8)放料,上膜(6)和下膜(13)通过经过下压辊(9)和上压辊(10)之间时,下压辊(9)和上压辊(10)挤压贴合在一起并经过加热辊(19)加热,使上膜(6)和下膜(13)之间的粘液烘干固化成粘合层(21),并使上膜(6)和下膜(13)固定贴合得到高强度的流延式TPU薄膜,并通过冷却辊(20)冷却后通过收料辊(11)进行收卷。
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