CN113400752A - 用于预成型vip板的阻隔膜、vip板和保温容器 - Google Patents
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Abstract
本发明提供了用于预成型VI P板的阻隔膜,包括从里层到外层依次复合的非结晶性聚对苯二甲酸乙二酯层、结晶性聚对苯二甲酸乙二酯层、铝箔层、聚乙烯层。本发明还提供了预成型的VI P板,包括:芯材、相向设置在芯材厚度方向两侧的第一阻隔件和第二阻隔件;所述第一阻隔件中的一部分经过预处理下凹形成凹槽;所述芯材全部或者部分容置于所述凹槽内;所述第二阻隔件与第一阻隔件凹槽以外的部分密封贴合形成沿着芯材周向延伸的封边;所述第一阻隔件和第二阻隔件为如上所述的阻隔膜。本发明还提供了保温容器,配备了如上所述的VI P板。
Description
技术领域
本发明涉及保温材料,尤其涉及VIP板。
背景技术
真空绝热板(VIP板)是英文Vacuum Insulation Panel的简称,是真空保温材料中的一种,是由填充芯材与真空保护表层复合而成,它有效地避免空气对流引起的热传递,因此导热系数可大幅度降低,低至0.0015w/m.k,并且不含有任何ODS材料,具有环保和高效节能的特性,是目前世界上最先进的高效保温材料。
真空绝热板一般包括芯材、真空阻隔复合膜和吸附剂,吸附剂放置于芯材内,真空阻隔膜包裹芯材,现有的阻隔膜中最常见结构为:从里到外(将阻隔膜制作成VIP阻隔袋时,PE作为热封层,在阻隔袋内侧)依次设置一层聚乙烯 (PE)膜、一层铝(AL)箔,一层镀铝聚对苯二甲酸乙二酯(MPET)膜,一层尼龙(NY) 膜,即PE/AL/MPET/NY。
此种结构存在以下问题:膜的抗拉伸性能比较弱,无法进行冲压成型凹槽。
发明内容
本发明所要解决的主要技术问题是提供一种用于预成型VIP板的阻隔膜,在冲压后还能保持良好的阻隔性能。
为了解决上述的技术问题,本发明提供了用于预成型VIP板的阻隔膜,其特征在于:包括从里层到外层依次复合的非结晶性聚对苯二甲酸乙二酯层、结晶性聚对苯二甲酸乙二酯层、铝箔层、聚乙烯层。
在一较佳实施例中:所述聚非结晶性聚对苯二甲酸乙二酯层的厚度为 50-500um。
在一较佳实施例中:所述结晶性聚对苯二甲酸乙二酯的厚度为10-100um。
在一较佳实施例中:所述铝箔层的厚度为5-40um。
在一较佳实施例中:所述聚乙烯层的厚度为40-200um。
本发明还提供了预成型的VIP板,包括:芯材、相向设置在芯材厚度方向两侧的第一阻隔件和第二阻隔件;
所述第一阻隔件中的一部分经过预处理下凹形成凹槽;所述芯材全部或者部分容置于所述凹槽内;所述第二阻隔件与第一阻隔件凹槽以外的部分密封贴合形成沿着芯材周向延伸的封边;
所述第一阻隔件和第二阻隔件为权利要求1-5中任一项所述的阻隔膜。
在一较佳实施例中:所述封边位于所述芯材朝向第二阻隔件的一面所在的平面上。
在一较佳实施例中:所述凹槽通过冲压成型或吸塑成型。
本发明还提供了保温容器,配备了如上所述的VIP板。
相较于现有技术,本发明的技术方案具备以下有益效果:
本发明提供了一种用于预成型VIP板的阻隔膜,利用非结晶性聚对苯二甲酸乙二酯的抗冲击性能和抗撕裂性,使得整个复合膜的耐拉伸性能大大增强,因此可以用于冲压成型凹槽,形成预成型的阻隔膜。并且本发明采用了单独的铝箔,传统的阻隔膜多采用镀铝的方式,这种阻隔膜在冲压过程中镀铝层因为拉伸就会失去阻水阻气的效果,因为不具备冲压成型的条件。
传统的VIP板采用多层阻隔材料复合后制成软包装袋,放入隔热蕊材后抽真空后进行热封,在进行折边成型。这种制作工艺过程复杂、工序多,制作过程中会对板的保温隔热性能带来破坏。而利用预成型的阻隔膜制作真空VIP隔热板减少了工序,减少了人工操制作过程中对外包装的损伤,有利于提高VIP 真空隔热板的隔热性能。
附图说明
图1为本发明优选实施例的分层结构图。
具体实施方式
下面将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。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“设置有”、“套设/接”、“连接”等,应做广义理解,例如“连接”,可以是壁挂连接,也可以是可拆卸连接,或一体地连接,可以是机械连接,也可以是电连接,可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通,对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
参考图1,本实施例提供了用于预成型VIP板的阻隔膜,包括从里层到外层依次复合的非结晶性聚对苯二甲酸乙二酯层1、结晶性聚对苯二甲酸乙二酯层2、铝箔层3、聚乙烯层4。
选用非结晶性聚对苯二甲酸乙二酯层1是利用其抗冲击性能和抗撕裂性、耐高低温热性,提高阻隔膜的抗撕裂性能,使其在冲压过程中不会破损。结晶性聚对苯二甲酸乙二酯是水气阻隔层,提高阻隔膜的水气阻隔性能,保证长时间使用后的真空度。选用单独的铝箔层3是避免铝箔层3在冲压过程中失去阻水阻气的性能,保证阻隔膜在冲压后依旧具备良好的阻隔性能。
非结晶性聚对苯二甲酸乙二酯层1是一种吸塑材料,也称聚酯硬质胶布,是热塑性环保塑胶产品,其边料与废品可回收,其所含化学元素同纸张一样为碳、氢、氧,属可降解性塑料。用这种材料制成的包装产品丢弃后,最终成为水和二氧化碳。
因此,本实施例的阻隔膜可以采用吸塑、热压工艺,起定型作用,形成具有立体结构的包装盒。传统的VIP板阻隔袋复合膜只适用于袋包装,不能制作预成型立体结构的包装盒。
具体来说,所述非结晶性聚对苯二甲酸乙二酯层1的厚度为50-500um。所述结晶性聚对苯二甲酸乙二酯的厚度为10-100um。所述铝箔层3的厚度为 5-40um。所述聚乙烯层4的厚度为40-200um。
所述铝箔的牌号为:AL801或AL8079或AL8011。
上述的用于预成型VIP板的阻隔膜,利用聚对苯二甲酸乙二酯的抗冲击性能和抗撕裂性,使得整个复合膜的耐拉伸性能大大增强,因此可以用于冲压成型凹槽,形成预成型的阻隔膜。并且本发明采用了单独的铝箔,传统的阻隔膜多采用镀铝的方式,这种阻隔膜在冲压过程中镀铝层因为拉伸就会失去阻水阻气的效果,因为不具备冲压成型的条件。
本发明还提供了预成型的VIP板,包括:芯材、相向设置在芯材厚度方向两侧的第一阻隔件和第二阻隔件;
所述第一阻隔件中的一部分经过预处理下凹形成凹槽;所述芯材全部或者部分容置于所述凹槽内;所述第二阻隔件与第一阻隔件凹槽以外的部分密封贴合形成沿着芯材周向延伸的封边;
所述第一阻隔件和第二阻隔件为如上所述的阻隔膜。
传统的VIP板采用多层阻隔材料复合后制成软包装袋,放入隔热蕊材后抽真空后进行热封,在进行折边成型。这种制作工艺过程复杂、工序多,制作过程中会对板的保温隔热性能带来破坏。而利用预成型的阻隔膜制作真空VIP隔热板减少了工序,减少了人工操制作过程中对外包装的损伤,有利于提高VIP 真空隔热板的隔热性能。
本实施例中,所述封边位于所述芯材朝向第二阻隔件的一面所在的平面上。所述凹槽通过冲压成型或吸塑成型。
本实施例还提供了保温容器,配备了如上所述的VIP板。
以上所述,仅为本发明较佳的具体实施方式,但本发明的设计构思并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,利用此构思对本发明进行非实质性的改动,均属于侵犯本发明保护范围的行为。
Claims (9)
1.用于预成型VIP板的阻隔膜,其特征在于:包括从里层到外层依次复合的非结晶性聚对苯二甲酸乙二酯层、结晶性聚对苯二甲酸乙二酯、铝箔层、聚乙烯层。
2.根据权利要求1所述的用于预成型VIP板的阻隔膜,其特征在于:所述聚对非结晶性聚对苯二甲酸乙二酯层的厚度为50-500um。
3.根据权利要求1所述的用于预成型VIP板的阻隔膜,其特征在于:所述结晶性聚对苯二甲酸乙二酯的厚度为10-100um。
4.根据权利要求1所述的用于预成型VIP板的阻隔膜,其特征在于:所述铝箔层的厚度为5-40um。
5.根据权利要求1所述的用于预成型VIP板的阻隔膜,其特征在于:所述聚乙烯层的厚度为40-200um。
6.预成型的VIP板,其特征在于包括:芯材、相向设置在芯材厚度方向两侧的第一阻隔件和第二阻隔件;
所述第一阻隔件中的一部分经过预处理下凹形成凹槽;所述芯材全部或者部分容置于所述凹槽内;所述第二阻隔件与第一阻隔件凹槽以外的部分密封贴合形成沿着芯材周向延伸的封边;
所述第一阻隔件和第二阻隔件为权利要求1-5中任一项所述的阻隔膜。
7.根据权利要求6所述的预成型的VIP板,其特征在于:所述封边位于所述芯材朝向第二阻隔件的一面所在的平面上。
8.根据权利要求6所述的预成型的VIP板,其特征在于:所述凹槽通过冲压成型或吸塑成型。
9.保温容器,其特征在于配备了权利要求6-8中任一项所述的VIP板。
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