CN115320209B - 一种溶胀胶带及其生产工艺 - Google Patents
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Abstract
本发明提供了一种溶胀胶带及其生产工艺,所述溶胀胶带包括基底膜、设置在所述基底膜两侧的弹性伸缩层,所述弹性伸缩层与基底膜之间设有粘结层,所述弹性伸缩层上均布孔洞,所述基底膜呈波浪形均布在两侧的弹性伸缩层之间。本发明具有如下有益效果:通过均布孔洞的弹性伸缩层配合粘结层与波浪形设置的基底膜,其解决了现有的溶胀胶带膨胀后,因为其形变不可控和容易损坏粘结层,导致在后续使用中,胶带容易发生滑动甚至脱离的技术问题。
Description
技术领域
本发明涉及溶胀胶带生产技术领域,尤其涉及一种溶胀胶带及其生产工艺。
背景技术
在很多情况下,需要对两个间隔对象之间的间隙进行填充,并且,具有间隙的两个对象应当通过填充该间隙而被固定在适当的位置。
例如,在通过将电极组件封装于圆柱形壳体中来制备电池时,电极组件通常具有小于圆柱形壳体的尺寸,因此在电极组件与壳体内壁之间存在间隙。在这种情况下,封装于壳体中的电极组件由于外部振动或冲击而在壳体内自由移动,这会使电池的内电阻增大或损坏电极片,大幅度降低电池的性能。因此,应当对间隙进行填充,并将电极组件牢固地固定在适当的位置。
因此就产生了溶胀胶带,溶胀胶带与特定液体接触后会反射膨胀,变为三维结构,具体如2015年07月15日公布的公开号为CN 104781951 A的填充间隙用溶胀胶带。
但是其在变为三维结构后,与固定对象的粘合面积就会变现小,如图1所示,会从原本一整个接触面变为多个小的接触面,甚至因为变现的不可控制性,会导致部分位置的脱离溶胀胶带,如图2所示,且因为在变形前已经进行粘贴,变形时容易损坏粘结层,即基底膜与粘结层撕裂,如图3所示,进而在后续使用中,受力胶带容易发生滑动。
发明内容
针对现有技术中所存在的不足,本发明提供了一种溶胀胶带及其生产工艺,其解决了现有的溶胀胶带膨胀后,因为其形变不可控和容易损坏粘结层,导致在后续使用中,胶带容易发生滑动甚至脱离的技术问题。
根据本发明的实施例记载的一种溶胀胶带,包括基底膜、设置在所述基底膜两侧的弹性伸缩层,所述弹性伸缩层与基底膜之间设有粘结层,所述弹性伸缩层上均布孔洞,所述基底膜呈波浪形均布在两侧的弹性伸缩层之间。
本发明的技术原理为:在初始状态就将基底膜设置成波浪状,避免基底膜在变形过程中变换为其他形状,而基底膜两侧都设有弹性伸缩层,在不使用时起到保护内侧的粘结层与基底膜,而在使用时,但未膨胀前,粘结层不会与固定对象粘结,只有当胶带膨胀后,粘结层才会被基底膜从孔洞中压出,与固定对象粘结,进而避免了,粘结层被撕裂损坏,而弹性伸缩层会随着基底膜变形而伸长。
相比于现有技术,本发明具有如下有益效果:通过均布孔洞的弹性伸缩层配合粘结层与波浪形设置的基底膜,其解决了现有的溶胀胶带膨胀后,因为其形变不可控和容易损坏粘结层,导致在后续使用中,胶带容易发生滑动甚至脱离的技术问题。
进一步的,所述基底膜设有两层,两层所述基底膜之间设有一层共用的弹性伸缩层,共用的所述弹性伸缩层两侧也设有粘结层。
进一步的,所述溶胀胶带上均布有穿透的穿刺孔。
进一步的,所述弹性伸缩层采用PTT纤维编织成网状形而成,所述孔洞为PTT纤维的网状间隙,所述孔洞为菱形。
进一步的,靠近所述溶胀胶带外侧的粘结层厚度为靠近所述溶胀胶带外侧的弹性伸缩层的两倍。
进一步的,两层所述基底膜的共用的弹性伸缩层两侧的粘结层厚度小于等于共用的弹性伸缩层。
根据本发明的实施例记载的一种溶胀胶带的生产工艺,包括:
S1、拉伸:引出一卷所述弹性伸缩层,并且通过张紧的方式拉伸弹性伸缩层,使得弹性伸缩层保持弹性变形状态;
S2、首次复合:引出一卷所述基底膜,然后在所述基底膜一侧上涂覆上一层粘结层,并将粘结层烘干;
S3、初步压合:将所述S2步骤中带有烘干的粘结层的基底膜与S1步骤中拉伸的弹性伸缩层压合;
S4、回缩:将完成所述S3步骤的弹性伸缩层的张紧力减小,使得弹性伸缩层回缩,同时被压合在弹性伸缩层上的基底膜产生褶皱,形成波浪形结构;
S5、二次复合:在所述基底膜另一侧涂覆上一层粘结层,并将粘结层烘干,形成半成品胶带;
S6、最终压合:引出一卷新的所述弹性伸缩层,所述弹性伸缩层不进行拉伸直接与完成所述S5步骤的半成品胶带新涂覆有粘结层的一侧进行一次压合,然后在进行一次加热。
通过将弹性伸缩层拉伸后进行压合,然后让弹性伸缩层回缩的方法,生产出成波浪形的基底膜,使得本申请记载的溶胀胶带可以工业化的生产。
进一步的,所述S1步骤中弹性伸缩层拉伸出原本长度的10-20%。
进一步的,所述S3步骤中的压合方法为:让带有烘干的粘结层的基底膜与拉伸的弹性伸缩层通过两个压合辊之间;两个所述压合辊的间隙大于带有烘干的粘结层的基底膜的厚度,且小于带有烘干的粘结层的基底膜的与拉伸的弹性伸缩层的厚度之和。
进一步的,所述S6步骤中的压合方法为:让完成所述S5步骤的半成品胶带与新引出弹性伸缩层通过两个压合辊之间;两个所述压合辊的间隙大于半成品胶带厚度,且小于半成品胶带厚度与新的弹性伸缩层的厚度之和,所述加热温度控制在100℃,持续1分钟。
附图说明
图1为本发明背景技术中的原本的溶胀胶带膨胀后的结构示意图。
图2为本发明背景技术中的原本的溶胀胶带不可控制膨胀后的结构示意图。
图3为本发明背景技术中的原本的溶胀胶带膨胀损坏粘结层后的结构示意图。
图4为本发明实施例1的溶胀胶带结构示意图。
图5为本发明实施例1的溶胀胶带俯视图。
图6为本发明实施例1的溶胀胶带的工艺流程图。
图7为本发明实施例2的溶胀胶带结构示意图。
图8为本发明实施例2的溶胀胶带的工艺流程图。
上述附图中:1、第一固定对象;2、第二固定对象;3、基底膜;4、弹性伸缩层;5、粘结层;6、孔洞;7、PTT纤维;8、穿刺孔。
具体实施方式
下面结合附图及实施例对本发明中的技术方案进一步说明。
实施例1
如图4-5所示的溶胀胶带,包括基底膜3、设置在基底膜3两侧的弹性伸缩层4,弹性伸缩层4与基底膜3之间设有粘结层5,通过粘结层5粘合弹性伸缩层4与基底膜3,弹性伸缩层4上均布孔洞6,用于粘结层5被压出与固定对象粘合,基底膜3呈波浪形均布在两侧的弹性伸缩层4之间,使得变形时,也能保证为波浪形,而不会出现其他异形。
如图5所示,溶胀胶带上均布有穿透的穿刺孔8,穿刺孔8是用穿刺针在成品的溶胀胶带上扎出的,用于液体进入胶带内部,使得基底膜3膨胀。
如图5所示,弹性伸缩层4采用PTT纤维7编织成网状形而成,孔洞6为PTT纤维7的网状间隙,孔洞6为菱形,采用菱形的孔,因为菱形的不稳定性,便于溶胀胶带向外膨胀拉伸。
如图4所示,两侧的粘结层5厚度为弹性伸缩层4的两倍,使得在膨胀后,PTT纤维7会被压入粘结层5,而粘结层5也能顺利通过孔洞6与固定对象接触。
基底层可采用聚氨酯膜,具体的述聚氨酯可以包括包含具有至少两个异氰酸酯基的异氰酸酯化合物、多元醇化合物和增链剂的混合物的反应产物。
粘结层5可采用压敏胶。
如图6所示的溶胀胶带的生产工艺,包括:
S1、拉伸:引出一卷弹性伸缩层4,并且通过张紧的方式拉伸弹性伸缩层4,使得弹性伸缩层4保持弹性变形状态,具体的弹性伸缩层4拉伸出原本长度的10-20%,如果拉出长度过长,会导致弹性伸缩层4产生永久变形,进而无法回缩;如果拉出长度过短,会导致后续基底膜3变形为波浪形时,因为形变力的不足,导致变形部分处的粘结层5不能顺利脱离弹性伸缩层4,因此保持在10-20%的范围最好,其中拉长10%与20%的区别在于,拉长20%最后制得的溶胀胶带的基底膜3厚度更厚,因为回弹量更大。
S2、首次复合:引出一卷基底膜3,然后在基底膜3一侧上涂覆上一层粘结层5,并将粘结层5烘干,使得粘结层5与基底膜3紧密结合。
S3、初步压合:将S2步骤中带有烘干的粘结层5的基底膜3与S1步骤中拉伸的弹性伸缩层4压合,具体的压合方法为:让带有烘干的粘结层5的基底膜3与拉伸的弹性伸缩层4通过两个压合辊之间;两个压合辊的间隙大于带有烘干的粘结层5的基底膜3的厚度,且小于带有烘干的粘结层5的基底膜3的与拉伸的弹性伸缩层4的厚度之和,控制间隙以保证,弹性伸缩层4粘附在粘结层5上,但是其粘附力不强,但是在后续收缩过程中,基底膜3变形为波浪形时,因为粘结层5与弹性伸缩层4之间的粘附力不强,使得变形部分处的粘结层5能顺利脱离弹性伸缩层4。
S4、回缩:将完成S3步骤的弹性伸缩层4的张紧力减小,使得弹性伸缩层4回缩,同时被压合在弹性伸缩层4上的基底膜3产生褶皱,形成波浪形结构,需要特别说明的是弹性伸缩部在回缩完成后还是受到一定的张紧力的,用于保证面料是平面状态,否则弹性伸缩部会跟随基底膜3形状变为波浪形。
S5、二次复合:在基底膜3另一侧涂覆上一层粘结层5,并将粘结层5烘干,形成半成品胶带。
S6、最终压合:引出一卷新的弹性伸缩层4,所述弹性伸缩层4不进行拉伸直接与完成所述S5步骤的半成品胶带新涂覆有粘结层5的一侧进行一次压合,然后在进行一次加热,具体的压合方法为:让完成所述S5步骤的半成品胶带与新引出弹性伸缩层4通过两个压合辊之间,此处的压力辊上需要有穿刺针,用于在成品胶带上压出穿刺孔8;两个所述压合辊的间隙大于半成品胶带厚度,且小于半成品胶带厚度与新的弹性伸缩层4的厚度之和,加热温度控制在100℃,持续1分钟,通过控制间隙,保证粘结层5不会从孔洞6中压出,而加热到100℃保持1分钟,是为了使得粘结层5与弹性伸缩层4连接更加紧密。
实施例2
如图7所示,本实施例与实施例1的区别在于:基底膜3设有两层,靠近溶胀胶带外侧的粘结层5厚度为靠近溶胀胶带外侧的弹性伸缩层4的两倍,两层基底膜3之间设有一层共用的弹性伸缩层4,共用的弹性伸缩层4两侧也设有粘结层5,具体的两层基底膜3的共用的弹性伸缩层4两侧的粘结层5厚度小于等于共用的弹性伸缩层4,有效降低弹性层的厚度。
本实施例主要用于缝隙较大的空间,如果采用实施例1的溶胀胶带,因为溶胀厚度较大,其基底膜3在膨胀过程中还是容易发生不可控的变形,而做成两层基底膜3,使得两层基底膜3的变形都在可控范围内。
如图8所示,本实施例的生产工艺与实施例1区别在于:需要进行两次S2步骤,S3步骤需要分别使用两次S2步骤得到粘结层5与基底膜3在弹性伸缩层4两侧都进行一遍压合,同时S5步骤也是在两侧的基底膜3上都进行涂覆粘结层5,而S6步骤中半成品胶带两侧都需要压合弹性伸缩层4。
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。
Claims (7)
1.一种溶胀胶带,其特征在于:包括基底膜、设置在所述基底膜两侧的弹性伸缩层,所述弹性伸缩层与基底膜之间设有粘结层,所述弹性伸缩层上均布孔洞,所述基底膜呈波浪形均布在两侧的弹性伸缩层之间,所述溶胀胶带上均布有穿透的穿刺孔;
所述溶胀胶带的生产工艺,包括:
S1、拉伸:引出一卷所述弹性伸缩层,并且通过张紧的方式拉伸弹性伸缩层,使得弹性伸缩层保持弹性变形状态;
S2、首次复合:引出一卷所述基底膜,然后在所述基底膜一侧上涂覆上一层粘结层,并将粘结层烘干;
S3、初步压合:将所述S2步骤中带有烘干的粘结层的基底膜与S1步骤中拉伸的弹性伸缩层压合;
所述压合方法为:让带有烘干的粘结层的基底膜与拉伸的弹性伸缩层通过两个压合辊之间;两个所述压合辊的间隙大于带有烘干的粘结层的基底膜的厚度,且小于带有烘干的粘结层的基底膜的与拉伸的弹性伸缩层的厚度之和;
S4、回缩:将完成所述S3步骤的弹性伸缩层的张紧力减小,使得弹性伸缩层回缩,同时被压合在弹性伸缩层上的基底膜产生褶皱,形成波浪形结构;
S5、二次复合:在所述基底膜另一侧涂覆上一层粘结层,并将粘结层烘干,形成半成品胶带;
S6、最终压合:引出一卷新的所述弹性伸缩层,所述弹性伸缩层不进行拉伸直接与完成所述S5步骤的半成品胶带新涂覆有粘结层的一侧进行一次压合,然后在进行一次加热。
2.如权利要求1所述的一种溶胀胶带,其特征在于:所述基底膜设有两层,两层所述基底膜之间设有一层共用的弹性伸缩层,共用的所述弹性伸缩层两侧也设有粘结层。
3.如权利要求1或2所述的一种溶胀胶带,其特征在于:所述弹性伸缩层采用PTT纤维编织成网状形而成,所述孔洞为PTT纤维的网状间隙,所述孔洞为菱形。
4.如权利要求1或2所述的一种溶胀胶带,其特征在于:靠近所述溶胀胶带外侧的粘结层厚度为靠近所述溶胀胶带外侧的弹性伸缩层的两倍。
5.如权利要求2所述的一种溶胀胶带,其特征在于:两层所述基底膜的共用的弹性伸缩层两侧的粘结层厚度小于等于共用的弹性伸缩层。
6.如权利要求1所述的一种溶胀胶带,其特征在于:所述S1步骤中弹性伸缩层拉伸出原本长度的10-20%。
7.如权利要求1所述的一种溶胀胶带,其特征在于:所述S6步骤中的压合方法为:让完成所述S5步骤的半成品胶带与新引出弹性伸缩层通过两个压合辊之间;两个所述压合辊的间隙大于半成品胶带厚度,且小于半成品胶带厚度与新的弹性伸缩层的厚度之和,所述加热温度控制在100℃,持续1分钟。
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