CN114574119A - 一种三层共挤芯层微发泡pp膜胶带的制作方法 - Google Patents

一种三层共挤芯层微发泡pp膜胶带的制作方法 Download PDF

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CN114574119A
CN114574119A CN202210296997.4A CN202210296997A CN114574119A CN 114574119 A CN114574119 A CN 114574119A CN 202210296997 A CN202210296997 A CN 202210296997A CN 114574119 A CN114574119 A CN 114574119A
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林信光
黄锋
林信容
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Abstract

本发明公开了一种三层共挤芯层微发泡PP膜胶带的制作方法，包括步骤一，备料，分别称取聚乙烯原料粉、色母粒和开口剂加入到混合机中充分混合后作为A组分，分别称取低密度聚乙烯和发泡剂加入到混合机中充分混合后作为B组分；步骤二，挤出，将混合好的B组分和混合好的A组分分别加入到对应的料箱内，通过三螺杆三层共挤吹膜成型；步骤三，涂胶，共挤吹膜完成后，在微发泡膜的一面刮涂上水性压敏胶；步骤四，烘干，将涂覆上水性胶的胶膜通过牵引网带牵引到烘箱内进行烘干；步骤五，收卷，将烘干好的胶带通过收卷机收卷得到产品。本发明的优点在于：制作过程节约用料，产品柔软度好，贴合度高，克重小，减少了40％的塑料用量。

Description

一种三层共挤芯层微发泡PP膜胶带的制作方法
技术领域
本发明涉及胶带加工制造领域，尤其涉及一种三层共挤芯层微发泡PP膜胶带的制作方法。
背景技术
胶带是由基材和胶黏剂两部分组成,通过粘接使两个或多个不相连的物体连接在一起，其表面上涂有一层粘着剂。现有技术中的PP膜胶带同场采用直接混合吹塑的方式形成，而需要发泡的胶带则需要在挤出完成后再进行刮涂发泡剂，再进行发泡，工序比较繁琐，并且用料较多，此外，由于进行了多次加工，产品的柔软性较差，重量也比较大。现有技术中缺少能够减少用料，工艺简便的发泡PP膜胶带的制作方法。
发明内容
本发明要解决的技术问题是如何减少发泡PP膜胶带制作过程中的用料量和工艺步骤，针对上述要解决的技术问题，现提出一种三层共挤芯层微发泡PP膜胶带的制作方法。
为实现上述目的，本发明提供如下技术方案：一种三层共挤芯层微发泡PP膜胶带的制作方法，其通过如下步骤完成：
步骤一，备料，分别称取聚乙烯原料粉、色母粒和开口剂加入到混合机中充分混合后作为A组分，分别称取低密度聚乙烯和发泡剂加入到混合机中充分混合后作为B组分；
步骤二，挤出，将混合好的B组分加入到三螺杆挤出机中的中间料箱内，将混合好的A组分加入到三螺杆挤出机中的两端螺杆对应的料箱内，加入后通过三螺杆三层共挤吹膜成型；
步骤三，涂胶，共挤吹膜完成后，在微发泡膜的一面刮涂上水性压敏胶；
步骤四，烘干，将涂覆上水性胶的胶膜通过牵引网带牵引到烘箱内进行烘干；
步骤五，收卷，将烘干好的胶带通过收卷机收卷得到产品。
作为优选的，所述步骤二中挤出过程中前端的温度为115℃，中段的温度为120℃，后段的温度为140℃。
作为优选的，所述步骤二中挤出过程中挤出的速度为10m/min。
作为优选的，所述B组分的融指小于1克/10分钟。
作为优选的，所述步骤二中挤出过程中中间螺杆的挤出温度为115℃-140℃。
作为优选的，所述开口剂为二氧化硅。
作为优选的，所述发泡剂为偶氮类发泡剂。
与现有技术相比，本发明的有益效果是：
本发明通过采用三层共挤的方式进行挤出吹膜后再进行背胶，直接得到胶膜产品，使得胶带制作过程中的用料得到大大降低，相比于传统工艺，节约了40％的塑料使用，并且由于一次加工成型，加工步骤少，从而使得产品使用过程中的贴合度高，比重小，柔软度好。
附图说明
图1为本发明的方法流程示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中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做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
如图1所示的步骤图，本具体实施方式披露了一种三层共挤芯层微发泡PP膜胶带的制作方法，其通过如下步骤完成：
步骤一，备料，分别称取聚乙烯原料粉、色母粒和开口剂加入到混合机中充分混合后作为A组分，分别称取低密度聚乙烯和发泡剂加入到混合机中充分混合后作为B组分；
步骤二，挤出，将混合好的B组分加入到三螺杆挤出机中的中间料箱内，将混合好的A组分加入到三螺杆挤出机中的两端螺杆对应的料箱内，加入后通过三螺杆三层共挤吹膜成型；
步骤三，涂胶，共挤吹膜完成后，在微发泡膜的一面刮涂上水性压敏胶；
步骤四，烘干，将涂覆上水性胶的胶膜通过牵引网带牵引到烘箱内进行烘干；
步骤五，收卷，将烘干好的胶带通过收卷机收卷得到产品。
作为优选的，所述步骤二中挤出过程中前端的温度为115℃，中段的温度为120℃，后段的温度为140℃。
作为优选的，所述步骤二中挤出过程中挤出的速度为10m/min。
作为优选的，所述B组分的融指小于1克/10分钟。
作为优选的，所述步骤二中挤出过程中中间螺杆的挤出温度为115℃-140℃。
作为优选的，所述开口剂为二氧化硅。
作为优选的，所述发泡剂为偶氮类发泡剂。
作为优选的，所述步骤二中挤出过程中中间螺杆的挤出温度为115℃-140℃，加工过程中将挤出温度设置在此范围内，温度的高低主要影响挤出胶膜的硬度和张力大小，当选择比较适中的温度时，胶膜的硬度和张力均达到最大值，例如在本发明的其他具体实施方式中，可以设置温度为130℃。当然，在本发明的其他具体实施方式中，设置其他在115℃-140℃范围内的温度都是可以的。
作为优选的，所述开口剂为二氧化硅，二氧化硅开口剂是一种人工合成无定型二氧化硅，优选的，现有技术中采用合成二氧化硅作为开口剂，其更加有效率，有更好的光学度，是非结晶的，并且直接用到食品中去的，符合欧洲标准。并且具有更高的堆积密度，较低的开口辅助需求等同于较低的成本，分散更容易，操作更容易，较低的扬尘，更好地母料加工性。
作为优选的，所述发泡剂为偶氮类发泡剂，在本发明的其他具体实施方式中也可以采用其他食品级塑料使用的环保发泡剂。
本发明通过采用三层共挤的方式进行挤出吹膜后再进行背胶，直接得到胶膜产品，使得胶带制作过程中的用料得到大大降低，相比于传统工艺，节约了大于35％的用料，并且由于一次加工成型，加工步骤少，从而使得产品使用过程中的贴合度高，重量轻，柔软度好。
以上结合附图对本发明的实施方式作了详细说明，但本发明不限于所描述的实施方式。对于本领域的技术人员而言，在不脱离本发明原理和精神的情况下，对这些实施方式进行多种变化、修改、替换和变型，仍落入本发明的保护范围内。

Claims (7)

1.一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，通过如下步骤完成：
步骤一，备料，分别称取聚乙烯原料粉、色母粒和开口剂加入到混合机中充分混合后作为A组分，分别称取低密度聚乙烯和发泡剂加入到混合机中充分混合后作为B组分；
步骤二，挤出，将混合好的B组分加入到三螺杆挤出机中的中间料箱内，将混合好的A组分加入到三螺杆挤出机中的两端螺杆对应的料箱内，加入后通过三螺杆三层共挤吹膜成型；
步骤三，涂胶，共挤吹膜完成后，在微发泡膜的一面刮涂上水性压敏胶；
步骤四，烘干，将涂覆上水性胶的胶膜通过牵引网带牵引到烘箱内进行烘干；
步骤五，收卷，将烘干好的胶带通过收卷机收卷得到产品。
2.根据权利要求1所述的一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，所述步骤二中挤出过程中前端的温度为115℃，中段的温度为120℃，后段的温度为140℃。
3.根据权利要求1所述的一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，所述步骤二中挤出过程中挤出的速度为10m/min。
4.根据权利要求1所述的一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，所述B组分的融指小于1克/10分钟。
5.根据权利要求1所述的一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，所述步骤二中挤出过程中中间螺杆的挤出温度为115℃-140℃。
6.根据权利要求1所述的一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，所述开口剂为二氧化硅。
7.根据权利要求1所述的一种三层共挤芯层微发泡PP膜胶带的制作方法，其特征在于，所述发泡剂为偶氮类发泡剂。
CN202210296997.4A 2022-03-24 2022-03-24 一种三层共挤芯层微发泡pp膜胶带的制作方法 Pending CN114574119A (zh)

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JP2003041204A (ja) * 2001-07-27 2003-02-13 Fuji Clean:Kk 環境にやさしい塗装用マスキングフィルムロール体及びその製造方法
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