Pla resin for FIBRE STRAW

group nameDrinking Straw Manufacturing Machine and Materials
Min Order1 piece
brand nameToptac
payment method
update timeMon, 08 Oct 2018 17:03:03 GMT

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Min Order1 piece

Briefing

Pla resin for FIBRE STRAW

Detailed

PLA polymer REVODE711E

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

	PLAresinREVODE711E	Testing methods
Physical properties
Density（g/cm3）	1.26±0.05	GB/T1033-1986
Melt flow rate （ g/10min ， 190℃/2.16Kg)	3-10	GB/T3682-2000
Heat distortion temperature （℃）	60
Molding shrinkage rate (parallel melt flow direction)	0.005	ISO294-4:2001
Molding shrinkage (vertical melt flow direction)	0.003	ISO294-4:2001
Mechanical properties
Tensile strength（Mpa）	45-55	GB/T1040-2006
Elongation at break（%）≥	150	GB/T1040-2006
Impact strength（KJ/m2，Izod） ≥	3	GB/T1043-2008

Applications:

REVODE711E is suitablefor processing non-heat-resistant and non-transparent straws,including straight straws andcurved straws.

Processing Information

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

I: Theprocessing temperature (thespecific 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 unsmoothfeeding, it is recommended to pour cooling water into jacketin feeding throat section.

II: Color blending

If the product needs to be colored, make sure to use special color toner or PLA-basedcolor master batch. Improper toner or color master batch may lead to brittle product, unsmoothproduct surface andeven 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 Aluminumfoil bag, protected by box or bag outside can be used directly.Keep the packagesealed until ready to use and promptly reseal any unused material, or the resin will absorb the moisture.After then, the resin may present an increasedmobility during the process,and the productsmay have brittle property, surface shrinkage. If the resin exposed in the atmosphere for more than one hour, it should be re-driedbefore using, otherwise, the resin can be used directly.The possibility of absorbing the moisturecannot be excluded,if the resin exposedin the atmosphere with highmoisture.

When re-drying the resin, the un-dehumidified hot air is forbidden, for without dehumidifier, not only the dryingeffect cannot be obtained,but also the speed of water absorbance of PLA resincan be accelerated. The dehumidified air can guarantee the drying effect of PLA resin in desiccator. When using general oven, the dehumidification equipment shouldbe used to dehumidify the air in the oven.

SD-H series of honeycomb-wheels-type dehumidifiers supplied by Shini PlasticsTechnologies Inc. are strongly recommendedforPLA 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

Notice:

Close the baffle at the bottom of the hopper and purge the barrel when shuttingdown the machine for short time (within 30 min), avoiding blocking of the feed throat. Open the baffleand feed resinafter confirming to re-startinjection.

If color changing and decomposing happened during molding process, purge the barrel immediately to observethe state of the material.Keep on running ifthe materialis normal, or adjust the parameters.

Recovery treatment of renewable materials：

The unqualifiedproducts produced in the revode711E production process can be processedand processed with the new materials.The proportion of additionshould not be too large, otherwise theproduct will be too brittle,and the recycled materials can be treatedin the following two ways:

Mode 1: in the process of production, it is directly comminuted and conveyedto the hopper by means ofautomatic feeding.The new materialis mixed use, but need toensure that the bucket temperature is not higherthan 60 degrees,otherwise there maybe sticky material (recommended mode of use)