To reduce the pre-drying time by 50% with dehumidifying dryer

Dehumidifying dryer (Quality stabilization)

2022.05.25

To reduce the pre-drying time by 50 with dehumidifying dryer

It is impossible to further shorten the molding cycle which has reached its limit in today's High-Mix Low-Volume Manufacturing. However, there is still a lot of room for improvement in the setup time for mold changes that we perform every day.

There are various processes involved in switching to the next production

Mold replacement
Chuck plate replacement
Material replacement in the injection cylinder dryer, etc.

The most time-consuming of these processes is the resin pre-drying time.

Problems

Do you have any following problems?

When using a hot air dryer, it takes almost 4 hours for pre-drying, especially for nylon-based materials.
There is no space for a spare dryer and it is costly.
Unable to mold even though the molds and chuck plates have been replaced.

Solution

Change from hot air dryer to dehumidifying dryer.

dryer-hero1@2x

Result

Shorten the drying time from taking 4 hours to 2 hours.
(It took 4 hours to dry the standard tangerine moisture content of 2800 ppm of 66PA material to the moldable moisture content of 1000 ppm, but now it can be dried in 2 hours.)
The defect rate was reduced because stable drying was possible without being affected by the season or weather.
The production efficiency increased by the shortened 2 hours.