Design background: The supplement of the existing ballpoint pen is very short and will soon be exhausted. People had to discard and change refills. The consumption is huge, and the refill of the disposable ballpoint pen cannot be replaced, and the pen will be thrown away, causing huge waste and environmental pollution. Solution: The concept of the spiral pen is to extend the refill, and the refill is directly screwed into a spiral shape, and the replacement of the pen container and refill is no longer required. It greatly extends the service life of the pen and saves production materials.
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What age is it
The service life of the nib is not so long, and most of the refills are wasted because the tip of the nose is broken.
The concept is good, but it doesn't seem comfortable to hold it in your hand, and the ballpoint pen itself is very durable, so few people can use this pen until it is used up? Assuming that half of the people who buy the pen can use it completely, it will take a long time, then from the manufacturer's point of view, the business is too much to lose; moreover, if the pen is done, wouldn't it be useless?
I feel that after twisting so much, it still does not solve the problem of refills waste. it stretches out so many refills, but if it is wasted, there is a lot less pen head, and if there is no accident, it can prolong the use time of a pen
It is not practical to protect without a pen cap. the spiral shape of the refill is an idea, but the production cost will be greatly increased. is it sure that such a pen is comfortable to hold? I class = "expression-icon expression-type3" title = "naughty">/I>
Without a pen cap, it is easy to leak (personal painful experience)
If the pen head is broken, the whole pen will be useless. There could be greater waste, greater pollution
Isn't this the red dot work of Zhejiang University students a few years ago
Large capacity pens and refills are available on the market.
The moral of environmental protection reuse is very good, that is, there is too little display of product effect.
Ha, ha, ha, ha, this pen can last forever ~