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在给儿童挑选笔类用品时,首先要关注的就是笔盖上是否有通气孔!笔帽上留着一个小孔到底是做什么用的?有人猜测,笔帽上留孔的作用不过是平衡气压以防打不开盖,也有人猜测可能是笔帽被墨水弄脏后便于清洗……如果就为这点小作用在笔帽上加一个小孔,厂家犯得着吗?殊不知,为了加一道打孔的工序,生产厂家就要多加一条生产线,这其中的费用是相当高的。笔帽上的这个小孔到底有多大作用呢?2013年10月的一天,美国迈阿密儿童医院接收了一名
The first thing to keep in mind when choosing pen supplies for children is that there is a vent in the pen cap! What is the purpose of keeping a small hole in the pen cap? Some have speculated that the effect of the hole in the pen cap is simply to balance the pressure Anti-open does not open the lid, it was also speculated that the cap may be dirty after the ink is easy to clean ... ... If for this little role in the cap plus a small hole, the manufacturers make it? As everyone knows, in order to add a drilling process, The manufacturer will have to add a production line, of which the cost is quite high. On the day of October 2013, the Miami Children’s Hospital in the United States received one