Trap one

Many opaque signature refills will not fill the amount of ink according to the requirements of GB/T4306-92 (national standard), only 1-2 cm of ink near the tip of the pen; some transparent signature refills are close to 1 cm of the tip of the pen. The ink that can be written, the rest can not be written.

Trap two

Inferior inks can't be used in the ambient temperature range required by the national standard of 0-40 degrees C. When the weather is hot, ink will flow; if the weather is cold, it can't be written.

Trap three

The national standard for the warranty period of the pen is two years, and the inferior ink is dried up for several months.

Trap four

The standard writing angle of the pen is required to be 47 degrees. The inferior pen tip or inferior ink can be written only when it is vertical. It is difficult to write or write it when the pen is slightly tilted (to hold the pen at a 47 degree angle, reverse In the hour hand direction, fast circle is a good way to intuitively check the ballpoint pen).

Trap five

The pen of the signature pen is made of plastic. The cap of the inferior product is easy to slip, the pen and the pen cover are not in contact with the bayonet, and the glue is not bonded. It is easy to fall off due to the tension of the plastic itself; It is also easy to get rid of when writing hard. The production lines of these factories are almost all paid by piece. Even if there is a quality system, the inspection of the process and the end of the process will not be carried out, and the quality system will be ineffective.

Trap six

Neutral pens are emerging products. Neutral ink pens and refills have industry standards. There are no national standards for the time being. However, industry standards are more stringent than national standards. Due to the immature technology and production process, ink condensation, coarsening and crystallization are prone to occur. And so on. Many manufacturers do not know how to work hard, especially the nominal 0.5mm or 0.38mm needle gel pen, most products will not be written after 3-5 months.

Trap seven

Inferior inks are not only not smooth or can not be written, but also have the phenomenon of spitting ink or water seepage, often there is no problem when looking at the sample, but the goods are not right after the payment, there are many problems. (Gently draw a straight line at the same pen angle as the ballpoint pen, the line of good products is continuous, not thick and thin, and the color depth is consistent; then draw the fold line slowly with the same pen angle according to the general writing pressure. The product line does not accumulate ink (water seepage), when the writing is slow, there is no ink accumulation point, not thick and thin, the color depth is consistent; then the same pen angle is counterclockwise, fast circle, good product feels smooth Smooth)

Trap eight

Inferior pens in addition to the problem of ink, there are also inferior materials used in the ball, the inner cavity of the pen tip is rough, the tail plug oil can not follow, the sealing of the pen tip is elastic and the seal is not good, etc., these will be stored at the time. Long or problems during transportation or use.

Source of information: Internet

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