CN106183130B - 光学膜传送带 - Google Patents

光学膜传送带 Download PDF

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CN106183130B
CN106183130B CN201610656067.XA CN201610656067A CN106183130B CN 106183130 B CN106183130 B CN 106183130B CN 201610656067 A CN201610656067 A CN 201610656067A CN 106183130 B CN106183130 B CN 106183130B
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李彦
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SUZHOU KECHUANG ELECTRONICS MATERIAL CO Ltd
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Abstract

本发明提供一种光学膜传送带,其为双层结构,具体包括,下层,呈层状结构,所述下层主成分为PET树脂或PP树脂;上层,呈层状结构,所述上层主成分采用PVC树脂;其中,所述下层与所述上层相对的表面上粘结有胶层或涂覆有胶液,所述下层与所述上层通过加热压合形成一体结构。本案提供的光学膜传送带通过上下层及胶液配方的特殊设计,使制得的传送带不分层、韧性好,不会对刀模造成伤害。

Description

光学膜传送带
技术领域
本发明涉及传送带,特别涉及光学膜传送带。
背景技术
在LCD生产行业,需用大量的如偏光膜、扩增膜、增亮膜等光学薄膜,而在光学膜的裁切成型过程中,传送带是必不可少的。
目前,光学膜裁切机使用的传送带厚度一般为0.6mm,宽度为1350、1400、1480、1500、1580、1600mm等,但目前国内仅有的几家厚PET的生产厂家如佛山杜邦、四川东材、常州同裕都只能生产单层最厚为0.35mm的PET,所以目前光学膜裁切机使用的传送带都采用双层复合的方法生产,这样生产的传送带在机器高速运转下很容易分层,并且由于材料较硬,在使用过程中,也容易对刀模造成伤害。
发明内容
针对上述技术中存在的不足之处,本发明提供一种光学膜传送带,以解决现有LCD光学膜裁切用传送带容易分层及容易对刀模造成伤害的问题。
为了实现根据本发明的这些目的和其它优点,本发明通过以下技术方案实现:
一种光学膜传送带,其为双层结构,具体包括,
下层,呈层状结构,所述下层主成分为PET树脂或PP树脂;
上层,呈层状结构,所述上层主成分采用PVC树脂;
其中,所述下层与所述上层相对的表面上粘结有胶层或涂覆有胶液,所述下层与所述上层通过加热压合形成一体结构。
优选的是,所述的光学膜传送带,其中,所述上层与所述下层相对的表面上也粘结有胶层或涂覆有胶液。
优选的是,所述的光学膜传送带,其中,所述胶层为含有纳米粉末的EVA热熔胶,所述胶液为聚氨酯水溶胶。
优选的是,所述的光学膜传送带,其中,所述EVA热熔胶包括以下成分(按质量百分数计):
通过将EVA树脂、过氧化物类交联剂、酚类或亚磷酸酯类抗氧剂、受阻胺类光稳定剂进行高速混合后,再加入纳米氧化钙粉末、纳米氧化铍粉末、纳米氧化硼粉末、纳米氧化钡粉末进行再混合,使制得的热熔胶中均匀填充无机粉末颗粒,从而增强上下层之间的粘结性,使其不分层。
优选的是,所述的光学膜传送带,其中,所述聚氨酯水溶胶包括以下成分(按质量百分数计):
聚氨酯,含量为45%~72.5%;
纳米二氧化硅粉末,含量为4%~10%;
纳米二氧化锆粉末,含量为4%~10%;
触变剂,含量为5%~10%,所述触变剂为比表面积为380㎡/g的气相二氧化硅或聚酰胺蜡中的一种;
水性环氧树脂,含量为4%~10%;
消泡剂,含量为0.5%~2.5%;
其余为胶乳胶液。
在胶乳胶液中依次加入聚氨酯、触变剂、水性环氧树脂及消泡剂进行充分混合后,再加入纳米二氧化硅粉末及纳米二氧化锆粉末进行充分混合,使制得的聚氨酯水溶胶中均匀混合有无机纳米颗粒粉末,从而增强上下层之间的粘结性,使其不分层。
优选的是,所述的光学膜传送带,其中,所述下层包括以下成分(按质量百分数计):
PET树脂或PP树脂,其含量为90%~95%;
紫外线吸收剂,其含量为0.3%~1.5%,所述紫外线吸收剂为2-羟基-4-丙烯酰氧基乙氧基二苯甲酮;
防老剂,其含量为1%~5%,所述防老剂为N-苯基-α-苯胺或N-苯基-N`-环己基对苯二胺;
抗氧剂,其含量为0.5%~1.5%,所述抗氧剂为2,6-二叔丁基-4-乙基苯酚;
交联剂,其含量为0.3%~1.3%,所述交联剂为过氧化苯甲酸叔丁酯;
偶联剂,其含量为0.15%~1.8%,所述偶联剂为3-(甲基丙烯酰氧)丙基三甲氧基硅烷。
将上述成分混料后进行熔融挤出、压延形成下层。
优选的是,所述的光学膜传送带,其中,所述下层包括以下成分(按质量百分数计):
PET树脂,其含量为91%,熔体流动速率为(40~45)g/10min;
紫外线吸收剂,其含量为1%;
防老剂,其含量为5%;
抗氧剂,其含量为1.5%;
交联剂,其含量为1.3%;
偶联剂,其含量为0.2%。
优选的是,所述的光学膜传送带,其中,所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为65%~82.47%;
透明填料,其含量为8%~20%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为5%~10%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为4%~10%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为0.5%~2.5%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.03%~0.1%,所述催化剂为二月桂酸二丁基锡。
优选的是,所述的光学膜传送带,其中,所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为82.45%;
透明填料,其含量为8%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为5%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为4%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为0.5%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.05%,所述催化剂为二月桂酸二丁基锡。
优选的是,所述的光学膜传送带,其中,所述上层是通过将PVC树脂、透明填料、增塑剂、促进剂及催化剂高速混合1小时后,加入触变剂,并再次高速混合,熔融挤出形成层状结构;所述下层及所述上层通过层压工艺复合,所述层压工艺温度为160℃,时间为30min。
本发明至少包括以下有益效果:本案通过上下层及胶液配方的特殊设计,使制得的传送带不分层、韧性好,不会对刀模造成伤害。
本发明的其它优点、目标和特征将部分通过下面的说明体现,部分还将通过对本发明的研究和实践而为本领域的技术人员所理解。
具体实施方式
下面对本发明做进一步的详细说明,以令本领域技术人员参照说明书文字能够据以实施。
应当理解,本文所使用的诸如“具有”、“包含”以及“包括”术语并不排除一个或多个其它元件或其组合的存在或添加。
实施例1
一种光学膜传送带,其为双层结构,具体包括,
下层,呈层状结构,所述下层主成分为PET树脂;
上层,呈层状结构,所述上层主成分采用PVC树脂;
其中,所述下层与所述上层相对的表面上粘结有胶层,所述下层与所述上层通过加热压合形成一体结构。
其中,所述上层与所述下层相对的表面上也粘结有胶层。所述胶层为含有纳米粉末的EVA热熔胶。
所述EVA热熔胶包括以下成分(按质量百分数计):
通过将EVA树脂、过氧化物类交联剂、酚类抗氧剂、受阻胺类光稳定剂进行高速混合后,再加入纳米氧化钙粉末、纳米氧化铍粉末、纳米氧化硼粉末、纳米氧化钡粉末进行再混合,使制得的热熔胶中均匀填充无机粉末颗粒,从而增强上下层之间的粘结性,使其不分层。
其中,所述下层包括以下成分(按质量百分数计):
PET树脂,其含量为91%,熔体流动速率为(40~45)g/10min;
紫外线吸收剂,其含量为1%;
防老剂,其含量为5%;
抗氧剂,其含量为1.5%;
交联剂,其含量为1.3%;
偶联剂,其含量为0.2%。
将上述成分混料后进行熔融挤出、压延形成下层。
所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为82.47%;
透明填料,其含量为8%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为5%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为4%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为0.5%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.03%,所述催化剂为二月桂酸二丁基锡。
其中,所述上层是通过将PVC树脂、透明填料、增塑剂、促进剂及催化剂高速混合1小时后,加入触变剂,并再次高速混合,熔融挤出形成层状结构;所述下层及所述上层通过层压工艺复合,所述层压工艺温度为160℃,时间为30min。
实施例2
一种光学膜传送带,其为双层结构,具体包括,
下层,呈层状结构,所述下层主成分为PP树脂;
上层,呈层状结构,所述上层主成分采用PVC树脂;
其中,所述下层与所述上层相对的表面上涂覆有胶液,所述下层与所述上层通过加热压合形成一体结构。
其中,所述上层与所述下层相对的表面上也涂覆有胶液,所述胶液为聚氨酯水溶胶。
所述聚氨酯水溶胶包括以下成分(按质量百分数计):
聚氨酯,含量为82.5%;
纳米二氧化硅粉末,含量为4%;
纳米二氧化锆粉末,含量为4%;
触变剂,含量为5%,所述触变剂为比表面积为380㎡/g的气相二氧化硅或聚酰胺蜡中的一种;
水性环氧树脂,含量为4%;
消泡剂,含量为0.5%;
其余为胶乳胶液。
在胶乳胶液中依次加入聚氨酯、触变剂、水性环氧树脂及消泡剂进行充分混合后,再加入纳米二氧化硅粉末及纳米二氧化锆粉末进行充分混合,使制得的聚氨酯水溶胶中均匀混合有无机纳米颗粒粉末,从而增强上下层之间的粘结性,使其不分层。
其中,所述下层包括以下成分(按质量百分数计):
PP树脂,其含量为95%;
紫外线吸收剂,其含量为0.3%,所述紫外线吸收剂为2-羟基-4-丙烯酰氧基乙氧基二苯甲酮;
防老剂,其含量为3.75%,所述防老剂为N-苯基-α-苯胺或N-苯基-N`-环己基对苯二胺;
抗氧剂,其含量为0.5%,所述抗氧剂为2,6-二叔丁基-4-乙基苯酚;
交联剂,其含量为0.3%,所述交联剂为过氧化苯甲酸叔丁酯;
偶联剂,其含量为0.15%,所述偶联剂为3-(甲基丙烯酰氧)丙基三甲氧基硅烷。
将上述成分混料后进行熔融挤出、压延形成下层。
其中,所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为65%;
透明填料,其含量为20%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为10%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为4%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为0.97%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.03%,所述催化剂为二月桂酸二丁基锡。
其中,所述上层是通过将PVC树脂、透明填料、增塑剂、促进剂及催化剂高速混合1小时后,加入触变剂,并再次高速混合,熔融挤出形成层状结构;所述下层及所述上层通过层压工艺复合,所述层压工艺温度为160℃,时间为30min。
实施例3
一种光学膜传送带,其为双层结构,具体包括,
下层,呈层状结构,所述下层主成分为PET树脂;
上层,呈层状结构,所述上层主成分采用PVC树脂;
其中,所述下层与所述上层相对的表面上粘结有胶层,所述下层与所述上层通过加热压合形成一体结构。
其中,所述上层与所述下层相对的表面上也粘结有胶层。
其中,所述EVA热熔胶包括以下成分(按质量百分数计):
通过将EVA树脂、过氧化物类交联剂、亚磷酸酯类抗氧剂、受阻胺类光稳定剂进行高速混合后,再加入纳米氧化钙粉末、纳米氧化铍粉末、纳米氧化硼粉末、纳米氧化钡粉末进行再混合,使制得的热熔胶中均匀填充无机粉末颗粒,从而增强上下层之间的粘结性,使其不分层。
其中,所述下层包括以下成分(按质量百分数计):
PET树脂,其含量为91%,熔体流动速率为(40~45)g/10min;
紫外线吸收剂,其含量为1%;
防老剂,其含量为5%;
抗氧剂,其含量为1.5%;
交联剂,其含量为1.3%;
偶联剂,其含量为0.2%。
将上述成分混料后进行熔融挤出、压延形成下层。
其中,所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为70%;
透明填料,其含量为10%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为10%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为8%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为1.9%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.1%,所述催化剂为二月桂酸二丁基锡。
所述上层是通过将PVC树脂、透明填料、增塑剂、促进剂及催化剂高速混合1小时后,加入触变剂,并再次高速混合,熔融挤出形成层状结构;所述下层及所述上层通过层压工艺复合,所述层压工艺温度为160℃,时间为30min。
将本案制得的实施例1至3中所述光学膜传送带与市售光学膜传送带进行层间力学强度测试,实施例1至3所述光学膜传送带的力学强度测试结果为市售光学膜传送带的2至4倍,由此可见本案所示出的光学膜传送带能够克服现有技术易于分层的缺陷,本案上层采用PVC树脂,较现有的PET或PP树脂对于切刀的损伤性较低,有保护切刀的作用。
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用。它完全可以被适用于各种适合本发明的领域。对于熟悉本领域的人员而言可容易地实现另外的修改。因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节。

Claims (7)

1.一种光学膜传送带,其特征在于,为双层结构,具体包括,
下层,呈层状结构,所述下层主成分为PET树脂或PP树脂;
上层,呈层状结构,所述上层主成分采用PVC树脂;
其中,所述下层与所述上层相对的表面上粘结有胶层或涂覆有胶液,所述下层与所述上层通过加热压合形成一体结构;
所述胶层为含有纳米粉末的EVA热熔胶,所述胶液为聚氨酯水溶胶;
所述EVA热熔胶包括以下成分(按质量百分数计):
所述聚氨酯水溶胶包括以下成分(按质量百分数计):
聚氨酯,含量为45%~72.5%;
纳米二氧化硅粉末,含量为4%~10%;
纳米二氧化锆粉末,含量为4%~10%;
触变剂,含量为5%~10%,所述触变剂为比表面积为380㎡/g的气相二氧化硅或聚酰胺蜡中的一种;
水性环氧树脂,含量为4%~10%;
消泡剂,含量为0.5%~2.5%;
其余为胶乳胶液。
2.根据权利要求1所述的光学膜传送带,其特征在于,所述上层与所述下层相对的表面上也粘结有胶层或涂覆有胶液。
3.根据权利要求1所述的光学膜传送带,其特征在于,所述下层包括以下成分(按质量百分数计):
PET树脂或PP树脂,其含量为90%~95%;
紫外线吸收剂,其含量为0.3%~1.5%,所述紫外线吸收剂为2-羟基-4-丙烯酰氧基乙氧基二苯甲酮;
防老剂,其含量为1%~5%,所述防老剂为N-苯基-α-苯胺或N-苯基-N`-环己基对苯二胺;
抗氧剂,其含量为0.5%~1.5%,所述抗氧剂为2,6-二叔丁基-4-乙基苯酚;
交联剂,其含量为0.3%~1.3%,所述交联剂为过氧化苯甲酸叔丁酯;
偶联剂,其含量为0.15%~1.8%,所述偶联剂为3-(甲基丙烯酰氧)丙基三甲氧基硅烷。
4.根据权利要求3所述的光学膜传送带,其特征在于,所述下层包括以下成分(按质量百分数计):
PET树脂,其含量为91%,熔体流动速率为(40~45)g/10min;
紫外线吸收剂,其含量为1%;
防老剂,其含量为5%;
抗氧剂,其含量为1.5%;
交联剂,其含量为1.3%;
偶联剂,其含量为0.2%。
5.根据权利要求1所述的光学膜传送带,其特征在于,所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为65%~82.47%;
透明填料,其含量为8%~20%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为5%~10%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为4%~10%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为0.5%~2.5%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.03%~0.1%,所述催化剂为二月桂酸二丁基锡。
6.根据权利要求5所述的光学膜传送带,其特征在于,所述上层包括以下成分(按质量百分数计):
PVC树脂,其含量为82.45%;
透明填料,其含量为8%,所述透明填料为透明粉与200㎡/g气相二氧化硅的混合物;
触变剂,其含量为5%,所述触变剂为比表面积为380㎡/g的气相二氧化硅;
增塑剂,含量为4%,所述增塑剂为邻苯二甲酸二辛脂;
促进剂,含量为0.5%,所述促进剂为γ-(2,3-环氧丙氧)丙基三甲氧基硅烷;
催化剂,其含量为0.05%,所述催化剂为二月桂酸二丁基锡。
7.根据权利要求6所述的光学膜传送带,其特征在于,所述上层是通过将PVC树脂、透明填料、增塑剂、促进剂及催化剂高速混合1小时后,加入触变剂,并再次高速混合,熔融挤出形成层状结构;所述下层及所述上层通过层压工艺复合,所述层压工艺温度为160℃,时间为30min。
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