CN112793267A - 一种灯箱布及其加工工艺 - Google Patents
一种灯箱布及其加工工艺 Download PDFInfo
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Abstract
本发明公开了一种灯箱布及其加工工艺,包括以下步骤:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,再进行冷却,冷却时倒入液体稳定剂与钛白粉,将原料依次倒入密炼机、开炼机与挤出机中进行塑化,之后送入压延机中压延成型,得到PVC层,最后依次在热压机工作台上铺设PVC层、碳纤维网和金属网,之后经热压合,得到灯箱布。本发明所述的一种灯箱布及其加工工艺,一是通过在灯箱布的内部设置金属网,可以在灯箱布受到利器损伤时,防止灯箱布进一步损坏,能够在提高灯箱布韧性的同时还提高了灯箱布使用的安全性,二是在热压合前,先对碳纤维网进行加热,能够将温度快速传输到灯箱布内部,便于更好的与PVC层进行粘合。
Description
技术领域
本发明涉及灯箱布生产加工技术领域,特别涉及一种灯箱布及其加工工艺。
背景技术
传统的灯箱布是一种由两层PVC和一层高强度的网格布组成的灯箱招牌面料,分内打光和外打光两种,其主要生产方法有刀刮涂层法、压延法、贴合法;
目前,现有的灯箱布使用时,如果与尖锐物体接触,灯箱布的表面就会出现破损,导致灯箱布的表面出现裂缝,影响灯箱布的继续使用,同时灯箱布的破损处,还容易在外力的最用下继续扩大,最终导致灯箱布整体发生破损,其次,现有灯箱布在制造时,先将各种原料层层铺设在一起,之后在使用热压机进行热压合,但是由于热业机通过与原料接触的面对原料进行加热,再通过原料之间热传递对内部的原料进行加热,因此较为于内侧的原料最后被加热,从而导致热压合时外部温度与内部温度不一致,热压合时原料之间的均匀受力,影响原料最内侧网格布与PVC层的粘合,为此,我们提出一种灯箱布及其加工工艺。
发明内容
本发明的主要目的在于提供一种灯箱布及其加工工艺,可以有效解决背景技术中的问题。
为实现上述目的,本发明采取的技术方案为:
一种灯箱布及其加工工艺,该灯箱布包括第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层组成,所述PVC层以下重量份数的组分:碳酸钙15-20份、聚氯乙烯树脂35-45份、抗氧剂5-6份、阻燃剂2-3份、液体稳定剂3-5份、钛白粉1-3份。
优选的,所述PVC层以下重量份数的组分:碳酸钙20份、聚氯乙烯树脂40份、抗氧剂5份、阻燃剂3份、液体稳定剂4份、钛白粉2份。
优选的,一种灯箱布的加工工艺,包括以下步骤:
(1)原料混合:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,得到混合原料;
(2)原料冷却:对经步骤(1)得到的混合原料进行冷却,冷却时倒入液体稳定剂与钛白粉,待其冷却至48-56℃时停止,得到基础原料;
(3)塑化:将基础原料倒入密炼机中进行初步塑化,再送入开炼机进行再次塑化,最后送入挤出机进行最终塑化;
(4)成型:将经步骤(3)塑化后,送入压延机中压延成型,得到PVC层;
(5)热压合:依次在热压机工作台上铺设第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层,之后经热压合,得到灯箱布。
优选的,所述反射层的材质包括铬、铝、银、镍中的至少一种。
优选的,步骤(1)中,所述碳酸钙与聚氯乙烯树脂投入搅拌装置前,先放入粉碎机中进行粉碎,得到碳酸钙粉末与聚氯乙烯树脂粉末。
优选的,步骤(1)中,所述加热搅拌时,加热温度为130-135℃,搅拌装置的搅拌速度为500-700r/min,搅拌时间为20-50s。
优选的,步骤(2)中,所述冷却时,对搅拌装置的表面进行水冷,待搅拌装置内部温度下降到85-96℃时,停止冷却,倒入液体稳定剂与钛白粉,搅拌30-35s后,再次对搅拌装置的表面进行水冷。
优选的,步骤(4)中,所述成型时,使用两个冷却辊对成型PVC层进行挤压冷却。
优选的,步骤(5)中,所述热压合时,压力为1.0-2.3T,热压温度为260-286℃,碳纤维网铺设前,先对碳纤维网进行加热,加热至温度为200-250℃,再将碳纤维网铺设到PVC层上。
与现有技术相比,本发明具有如下有益效果:
一是通过各种原料相互配合,能够大大提高灯箱布的各种性能,其次通过合理控制各种原料的配比与工序,能够在提高灯箱布质量的同时加快生产效率;
二是通过在灯箱布的内部设置金属网,可以在灯箱布受到利器损伤时,防止灯箱布进一步损坏,能够在提高灯箱布韧性的同时还提高了灯箱布使用的安全性;
三是通过在灯箱布的内部安装碳纤维网,能够提高灯箱布的拉伸强度与灯箱布的耐热性,其次,在热压合前,先对碳纤维网进行加热,不但能够提高热压合时将温度快速传输到灯箱布的内部提高热压合的效果,同时还能更好的与PVC层进行粘合。
附图说明
图1为本发明一种灯箱布及其加工工艺整体的流程框图。
具体实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施方式,进一步阐述本发明。
实施例1
一种灯箱布及其加工工艺,该灯箱布包括第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层组成,所述PVC层以下重量份数的组分:碳酸钙20份、聚氯乙烯树脂40份、抗氧剂5份、阻燃剂3份、液体稳定剂4份、钛白粉2份。
如图1所示,一种灯箱布的加工工艺,包括以下步骤:
(1)原料混合:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,得到混合原料,所述碳酸钙与聚氯乙烯树脂投入搅拌装置前,先放入粉碎机中进行粉碎,得到碳酸钙粉末与聚氯乙烯树脂粉末,所述加热搅拌时,加热温度为130℃,搅拌装置的搅拌速度为600r/min,搅拌时间为30s;
(2)原料冷却:对经步骤(1)得到的混合原料进行冷却,冷却时倒入液体稳定剂与钛白粉,待其冷却至50℃时停止,得到基础原料,所述冷却时,对搅拌装置的表面进行水冷,待搅拌装置内部温度下降到90℃时,停止冷却,倒入液体稳定剂与钛白粉,搅拌32s后,再次对搅拌装置的表面进行水冷;
(3)塑化:将基础原料倒入密炼机中进行初步塑化,再送入开炼机进行再次塑化,最后送入挤出机进行最终塑化;
(4)成型:将经步骤(3)塑化后,送入压延机中压延成型,得到PVC层,所述成型时,使用两个冷却辊对成型PVC层进行挤压冷却;
(5)热压合:依次在热压机工作台上铺设第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层,之后经热压合,得到灯箱布,所述热压合时,压力为2.0T,热压温度为270℃,反射层的材质包括铬、铝、银、镍中的至少一种。
实施例2
一种灯箱布及其加工工艺,该灯箱布包括第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层组成,所述PVC层以下重量份数的组分:碳酸钙20份、聚氯乙烯树脂40份、抗氧剂5份、阻燃剂3份、液体稳定剂4份、钛白粉2份。
如图1所示,一种灯箱布的加工工艺,包括以下步骤:
(1)原料混合:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,得到混合原料,所述碳酸钙与聚氯乙烯树脂投入搅拌装置前,先放入粉碎机中进行粉碎,得到碳酸钙粉末与聚氯乙烯树脂粉末,所述加热搅拌时,加热温度为130℃,搅拌装置的搅拌速度为600r/min,搅拌时间为30s;
(2)原料冷却:对经步骤(1)得到的混合原料进行冷却,冷却时倒入液体稳定剂与钛白粉,待其冷却至50℃时停止,得到基础原料,所述冷却时,对搅拌装置的表面进行水冷,待搅拌装置内部温度下降到90℃时,停止冷却,倒入液体稳定剂与钛白粉,搅拌32s后,再次对搅拌装置的表面进行水冷;
(3)塑化:将基础原料倒入密炼机中进行初步塑化,再送入开炼机进行再次塑化,最后送入挤出机进行最终塑化;
(4)成型:将经步骤(3)塑化后,送入压延机中压延成型,得到PVC层,所述成型时,使用两个冷却辊对成型PVC层进行挤压冷却;
(5)热压合:依次在热压机工作台上铺设第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层,之后经热压合,得到灯箱布,所述热压合时,压力为2.0T,热压温度为270℃,碳纤维网铺设前,先对碳纤维网进行加热,加热至温度为210℃,再将碳纤维网铺设到PVC层上,反射层的材质包括铬、铝、银、镍中的至少一种。
实施例3
一种灯箱布及其加工工艺,该灯箱布包括第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层组成,所述PVC层以下重量份数的组分:碳酸钙20份、聚氯乙烯树脂40份、抗氧剂5份、阻燃剂3份、液体稳定剂4份、钛白粉2份。
如图1所示,一种灯箱布的加工工艺,包括以下步骤:
(1)原料混合:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,得到混合原料,所述碳酸钙与聚氯乙烯树脂投入搅拌装置前,先放入粉碎机中进行粉碎,得到碳酸钙粉末与聚氯乙烯树脂粉末,所述加热搅拌时,加热温度为130℃,搅拌装置的搅拌速度为600r/min,搅拌时间为30s;
(2)原料冷却:对经步骤(1)得到的混合原料进行冷却,冷却时倒入液体稳定剂与钛白粉,待其冷却至50℃时停止,得到基础原料,所述冷却时,对搅拌装置的表面进行水冷,待搅拌装置内部温度下降到90℃时,停止冷却,倒入液体稳定剂与钛白粉,搅拌32s后,再次对搅拌装置的表面进行水冷;
(3)塑化:将基础原料倒入密炼机中进行初步塑化,再送入开炼机进行再次塑化,最后送入挤出机进行最终塑化;
(4)成型:将经步骤(3)塑化后,送入压延机中压延成型,得到PVC层,所述成型时,使用两个冷却辊对成型PVC层进行挤压冷却;
(5)热压合:依次在热压机工作台上铺设第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层,之后经热压合,得到灯箱布,所述热压合时,压力为2.0T,热压温度为270℃,碳纤维网铺设前,先对碳纤维网进行加热,加热至温度为230℃,再将碳纤维网铺设到PVC层上,反射层的材质包括铬、铝、银、镍中的至少一种。
实施例4
一种灯箱布及其加工工艺,该灯箱布包括第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层组成,所述PVC层以下重量份数的组分:碳酸钙20份、聚氯乙烯树脂40份、抗氧剂5份、阻燃剂3份、液体稳定剂4份、钛白粉2份。
如图1所示,一种灯箱布的加工工艺,包括以下步骤:
(1)原料混合:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,得到混合原料,所述碳酸钙与聚氯乙烯树脂投入搅拌装置前,先放入粉碎机中进行粉碎,得到碳酸钙粉末与聚氯乙烯树脂粉末,所述加热搅拌时,加热温度为130℃,搅拌装置的搅拌速度为600r/min,搅拌时间为30s;
(2)原料冷却:对经步骤(1)得到的混合原料进行冷却,冷却时倒入液体稳定剂与钛白粉,待其冷却至50℃时停止,得到基础原料,所述冷却时,对搅拌装置的表面进行水冷,待搅拌装置内部温度下降到90℃时,停止冷却,倒入液体稳定剂与钛白粉,搅拌32s后,再次对搅拌装置的表面进行水冷;
(3)塑化:将基础原料倒入密炼机中进行初步塑化,再送入开炼机进行再次塑化,最后送入挤出机进行最终塑化;
(4)成型:将经步骤(3)塑化后,送入压延机中压延成型,得到PVC层,所述成型时,使用两个冷却辊对成型PVC层进行挤压冷却;
(5)热压合:依次在热压机工作台上铺设第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层,之后经热压合,得到灯箱布,所述热压合时,压力为2.0T,热压温度为270℃,碳纤维网铺设前,先对碳纤维网进行加热,加热至温度为250℃,再将碳纤维网铺设到PVC层上,反射层的材质包括铬、铝、银、镍中的至少一种。
实施例1为对比例,且实施例1-4均为单一变量,通过在碳纤维网铺设前对碳纤维加热至不同温度,检测生产后灯箱布每10cm2中气泡数与粘合强度(即将1m2大小的碳纤维网撕下时拉力大小),检测结果如下表:
由表格可以看出,实施例1与实施例2对比可知,在碳纤维网铺设前,先进行加热,能够在改善灯箱布内部气泡数量的同时还能提高灯箱布与PVC层之间粘合的强度,这是由于传统的灯箱布在生产加工时,无法将热量及时的传输到位于PVC层内部的碳纤维层,导致碳纤维层与PVC层之间的接触面溶解不充分,无法将碳纤维网全部包裹住,从而导致碳纤维网与PVC层之间的粘合效果不紧密,其次,随着对碳纤维网加热温度的不断升高,碳纤维网与PVC层之间粘合强度不断提高,但是最终成品灯箱布中气泡数量出现先减后增的趋势,这是由于碳纤维网的加热温度较高,导致PVC层与碳纤维网接触位置融化过快,使得PVC层表面出现凹凸不平的情况,最终在热压合时,PVC层表面的控制无法排除,从而成较多的气泡,另由表个可以看出,实施例2为最优选。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (9)
1.一种灯箱布,其特征在于,该灯箱布包括第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层组成,所述PVC层以下重量份数的组分:碳酸钙15-20份、聚氯乙烯树脂35-45份、抗氧剂5-6份、阻燃剂2-3份、液体稳定剂3-5份、钛白粉1-3份。
2.根据权利要求1所述的一种灯箱布,其特征在于:所述PVC层以下重量份数的组分:碳酸钙20份、聚氯乙烯树脂40份、抗氧剂5份、阻燃剂3份、液体稳定剂4份、钛白粉2份。
3.根据上述权利要求1~2任意一项所述的一种灯箱布的加工工艺,其特征在于:包括以下步骤:
(1)原料混合:将碳酸钙、聚氯乙烯树脂、抗氧剂和阻燃剂投入搅拌装置中搅拌加热均匀,得到混合原料;
(2)原料冷却:对经步骤(1)得到的混合原料进行冷却,冷却时倒入液体稳定剂与钛白粉,待其冷却至48-56℃时停止,得到基础原料;
(3)塑化:将基础原料倒入密炼机中进行初步塑化,再送入开炼机进行再次塑化,最后送入挤出机进行最终塑化;
(4)成型:将经步骤(3)塑化后,送入压延机中压延成型,得到PVC层;
(5)热压合:依次在热压机工作台上铺设第一PVC层、碳纤维网、第二PVC层反射层、金属网与第三PVC层,之后经热压合,得到灯箱布。
4.根据权利要求3所述的一种灯箱布的加工工艺,其特征在于:所述反射层的材质包括铬、铝、银、镍中的至少一种。
5.根据权利要求3所述的一种灯箱布的加工工艺,其特征在于:步骤(1)中,所述碳酸钙与聚氯乙烯树脂投入搅拌装置前,先放入粉碎机中进行粉碎,得到碳酸钙粉末与聚氯乙烯树脂粉末。
6.根据权利要求3所述的一种灯箱布的加工工艺,其特征在于:步骤(1)中,所述加热搅拌时,加热温度为130-135℃,搅拌装置的搅拌速度为500-700r/min,搅拌时间为20-50s。
7.根据权利要求3所述的一种灯箱布的加工工艺,其特征在于:步骤(2)中,所述冷却时,对搅拌装置的表面进行水冷,待搅拌装置内部温度下降到85-96℃时,停止冷却,倒入液体稳定剂与钛白粉,搅拌30-35s后,再次对搅拌装置的表面进行水冷。
8.根据权利要求3所述的一种灯箱布的加工工艺,其特征在于:步骤(4)中,所述成型时,使用两个冷却辊对成型PVC层进行挤压冷却。
9.根据权利要求3所述的一种灯箱布的加工工艺,其特征在于:步骤(5)中,所述热压合时,压力为1.0-2.3T,热压温度为260-286℃,碳纤维网铺设前,先对碳纤维网进行加热,加热至温度为200-250℃,再将碳纤维网铺设到PVC层上。
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