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双面胶带质量检查Quality inspection of double-sided adhesive tape
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双面胶带质量检查Quality inspection of double-sided adhesive tape
* 来源 : * 作者 : admin * 发表时间 : 2013-04-01 * 浏览 : 131

  双面胶带的质量检查主要有以下几点:
1、检查双面胶带上是否有裂纹
双面胶带在分切时,如果分切刀具调整不合适或刀刃不够锋利,都会在双面胶带的面纸或底纸上出现裂纹,裂纹处拉出的纤维又会被粘合剂粘住。贴双面胶机提示,裂纹的发生可能是连续的,也可能是随机的,可能出现在卷筒双面胶带的一边,也可能两边都有,所以,双面胶带上机加工前,不定要仔细察看其底纸和面纸上是否有小的裂纹。
然后,取一段经过上述检查的样纸,剥于底纸再次检查一下面纸和底纸上是否有裂纹,因为裂纹有时是非常小的,只有分开底纸和面纸后才能发现。
2、检查双面胶带是否有毛边
卷筒双面胶带边缘光洁、无损坏,是确保双面胶带质量的基础,所以,加工前一定要仔细检查卷筒双面胶带的分切边缘是否有毛边,是否因储运不当而出现了破损,并且要将卷筒双面胶带卷下4—5圈,仔细检查其分切边缘。
3、检查卷筒双面胶带分切端面是否平直、复卷松紧是否一致
如果卷筒双面胶带的分切端面不齐,不仅会影响加工时的套准,而且会因模切位置发生变化而发生排废困难;复卷时松紧不一致则会引起印刷时纸张力的变化,张力不均同样会造成印刷质量问题。

Quality inspection of double-sided adhesive tape

 The main points of double sided tape quality inspection are as following:

1 Checking whether there is a crack in double side adhesive tape.

When cutting the double-sided adhesive tape, there will be some cracks on the substrate of the double-sided adhesive tape if cutting tool’s adjustment is not suitable or not enough sharp. And where there is a crack, there will be sticky. The occurrence of cracks may be continuous or be random, may appeared in one side of the drum double-sided tape or on both sides. Therefore, even a little crack must be found out before the double-sided tape installed on the machine.

Take a bit of sample mentioned above, then take off the release paper and check whether there are some cracks on the release paper or adhesive tape or not. The crack is too small to found out unless you take off the release paper

2 Checking the deckle edge of the double-sided adhesive tape

What guarantees the basic quality of the double-sided tape is the drum double-sided tape’s edge is bright and clean and no damages. So, the double-sided adhesive tape must be checked carefully before being for production. The checkpoints include that whether there are some deckle edges of the double-sided adhesive tape or some damages due to the improper storage or transportation. When checking, the drum double-sided tape needs to be removed 4 or 5 laps to check the cutting edge carefully.

3 Checking the straightness of the reel double-sided tape’s section and the consistency of the reel double-sided tape’s tightness

If the end face of the roller (double-sided adhesive tape) is not even, the alignment will be impacted, what’s more, the waste discharging will be more difficult due to the change of the die-cutting location. If the tightness of the roller is inconsistent, the tension of the tape will be affected and so it is with the quality problem of sticking.


 

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