PLA polymer REVODE711E

REVODE711E is one kind of modified PLA which is specifically designed for straws and etc.

Applications:

REVODE711E is suitable for processing non-heat-resistant and non-transparent straws, including straight straws and curved straws.

Processing Information

REVODE711E resin can be processed on traditional polypropylene (PP) straw extrusion molding machine. When processing, please note:

I: The processing temperature (the specific temperature needs to be optimized):

Heat first section (near feed throat):130-150℃, other sections：160-180℃

PLA resin REVODE711E starts melting at temperature above 60 ℃, in case of too high temperature in the feeding throat leads to resin agglomeration and unsmooth feeding, it is recommended to pour cooling water into jacket in feeding throat section.

II: Color blending

If the product needs to be colored, make sure to use special color toner or PLA-based color master batch. Improper toner or color master batch may lead to brittle product, unsmooth product surface and even unable to extrude.

If color blending materials can not be used up within 2 hours, it is recommended not use 25 kg / bag resin all at once, instead, use half of it and seal the other half with a hot sealing device at once. The purpose is to expose the material to the air as short as possible.

III. Drying

REVODE711E has been processed by drying crystallization, and the moisture content is less than 400 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 then, the resin may present an increased mobility during the process, and the products may have brittle property, surface shrinkage. 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: