Product Introduction > Drying method
  • REVODE101
  • REVODE201
  • REVODE701
  • REVODE711

REVODE101 has been processed by drying crystallization, after which, the highest heat stability of the resin is 110 ℃, and the moisture content is less than 200 ppm. The resin that stored in Aluminum foil bag, protected by box or bag outside can be used directly. Re-drying of the resin can make the moisture content lower than 100 ppm, which is favorable to enhance the processability of the resin and the quality of the sheet.
When re-drying the resin, the un-dehumidified hot air is forbidden, for without dehumidifier, not only the drying effect cannot be obtained, but also the speed of water absorbance of PLA resin can be accelerated. The dehumidified air can guarantee the drying effect of PLA resin in desiccator.
Suggested PLA drying conditions are shown in the following table:


Drying Parameter

Typical Settings

Residence Time(hours)

2-3

Air Temperature(℃)

90

Air Dew Point(℃)

-40~-42

Air Flow Rate(m3/hr-kg resin)

>1.85

REVODE201 has been processed by drying crystallization, after which, the highest heat stability of the resin is 110 ℃, and the moisture content is less than 200 ppm. The resin that stored in Aluminum foil bag, protected by box or bag outside can be used directly. Keep the package sealed until ready to use and promptly reseal any unused material, or the resin will absorb the moisture. After than, the resin may present an increased mobility during the process, and the products may have brittle property, crazing on the surface, white materials on the mold polishing surface. If the resin exposed in the atmosphere for more than one hour, it should be re-dried before using, otherwise, the resin can be used directly. The possibility of absorbing the moisture cannot be excluded, if the resin exposed in the atmosphere with high moisture.
When re-drying the resin, the un-dehumidified hot air is forbidden, for without dehumidifier, not only the drying effect cannot be obtained, but also the speed of water absorbance of PLA resin can be accelerated. The dehumidified air can guarantee the drying effect of PLA resin in desiccator. When using general oven, the dehumidification equipment should be used to dehumidify the air in the oven.
SD-H series of honeycomb-wheels-type dehumidifiers supplied by Shini Plastics Technologies Inc. are strongly recommended for PLA drying, other equipments with the same dehumidified effect can also be selected.
Typical drying conditions are shown in the table below:

Drying Parameter

Typical Settings

Residence Time(hours)

2-3

Air Temperature(℃)

70 (Temperature of Drying hopper)

Air Dew Point(℃)

-40 (Temperature of molecular sieve dehumidifier)

Air Flow Rate(m3/hr-kg resin)

>1.85

   Note: During the molding process, if the molding mass is light, the 25 kg/bag resin should not be used on one time, when coloring the materials. The suggested method is that: only using half of bag resin, the residue is sealed by heat sealing device immediately. The aim is to avoid exposure in the atmosphere as short as possible. If a dehumidifier is equipped, it should be used during the molding process. The dehumidifier can stop the moisture absorption of resin during the molding process, so the problems mentioned above can be neglected.

REVODE701 has been processed by drying crystallization, and the moisture content is less than 200 ppm. The resin that stored in Aluminum foil bag, protected by box or bag outside can be used directly. Keep the package sealed until ready to use and promptly reseal any unused material, or the resin will absorb the moisture. After than, the resin may present an increased mobility during the process, and the products may have brittle property, crazing on the surface, white materials on the mold polishing surface. If the resin exposed in the atmosphere for more than one hour, it should be re-dried before using, otherwise, the resin can be used directly. The possibility of absorbing the moisture cannot be excluded, if the resin exposed in the atmosphere with high moisture.
When re-drying the resin, the un-dehumidified hot air is forbidden, for without dehumidifier, not only the drying effect cannot be obtained, but also the speed of water absorbance of PLA resin can be accelerated. The dehumidified air can guarantee the drying effect of PLA resin in desiccator. When using general oven, the dehumidification equipment should be used to dehumidify the air in the oven.
SD-H series of honeycomb-wheels-type dehumidifiers supplied by Shini Plastics Technologies Inc. are strongly recommended for PLA drying, other equipments with the same dehumidified effect can also be selected.
Typical drying conditions are shown in the table below:


Drying Parameter

Typical Settings

Residence Time(hours)

2-3

Air Temperature(℃)

50(Temperature of normal oven)

Air Dew Point(℃)

-40 (Temperature of dehumidifier)

Air Flow Rate(m3/hr-kg resin)

>1.85

REVODE711 has been processed by drying crystallization, and the moisture content is less than 200 ppm. The resin that stored in Aluminum foil bag, protected by box or bag outside can be used directly. Keep the package sealed until ready to use and promptly reseal any unused material, or the resin will absorb the moisture. After than, the resin may present an increased mobility during the process, and the products may have brittle property, surface shrinkage, white line on the mold surface. If the resin exposed in the atmosphere for more than one hour, it should be re-dried before using, otherwise, the resin can be used directly. The possibility of absorbing the moisture cannot be excluded, if the resin exposed in the atmosphere with high moisture.
When re-drying the resin, the un-dehumidified hot air is forbidden, for without dehumidifier, not only the drying effect cannot be obtained, but also the speed of water absorbance of PLA resin can be accelerated. The dehumidified air can guarantee the drying effect of PLA resin in desiccator. When using general oven, the dehumidification equipment should be used to dehumidify the air in the oven.
SD-H series of honeycomb-wheels-type dehumidifiers supplied by Shini Plastics Technologies Inc. are strongly recommended for PLA drying, other equipments with the same dehumidified effect can also be selected.
Typical drying conditions are shown in the table below:


Drying Parameter

Typical Settings

Residence Time(hours)

2-3

Air Temperature(℃)

80(Temperature of normal oven)

Air Dew Point(℃)

-40(Temperature of dehumidifier)

Air Flow Rate(m3/hr-kg resin)

>1.85