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Biodegradable Starch Resin
Film Blowing Grade Starch Based Biodegradable Master Batch
Product Features：
Granules are in light yellow and come in cylinder and round shape, with slight fragrance. They absorb moisture easily and are easily decomposed by microbes. They are anti-static. The processing temperature of them is lower than that of conventional plastic. They are easily colored. Such resin is a kind of additive which should be blended with polyolefin materials like PE, PP, PVA, EVA, etc. to process finish products. It can be 100% degraded within 2 to 2.5 years in the laboratory conditions.
Product Testing：
● The degradation rate in 100 days is up to the adding ratio of it.
● Biodegradation can be achieved when blended with conventional plastic, like PE, PP, PVA, EVA, etc.
Properties and Data:
Testing Item | Standard | Unit | Result |
Appearance | | | Light Yellow |
Density | GB 1033 | g/ cm3 | 1.10 – 1.25 |
Moisture Content | | % | 0.6– 1.5 |
Melt Flow Index | GB3682 | g/10 min | 0 - 2 |
Tear strength | GB 1040 | MPa | ≥15 |
Elongation | GB 1040 | % | ≥300 |
Bio Substances Content | | % | ≥90 |
n-hexane Extracts | GB/T5009.58 | % | ≤4.0 |
Rockwell hardness | GB9342 | R gauge | |
Softening point | GB/1633 | ºC | >65 |
Degradation rate in 100days | Degradation rate is affected by the adding ratio. | ||
The data for tensile strength and elongation refer to that of finished film products. | |||
Recommended Applications：
For all sorts of anti-static packing purposes, e.g. electronic product packaging, car interior covering film, electrical appliance packaging, agricultural mulch film, shopping bags, T-shirt bags, document folders, filter bags, storage bags, bin bags, tear-on-roll bags, disposable gloves, table cloths, aprons and rain coats, etc.
Processing Equipment：
Common film blowing extruder, sheet extruder, bag making machine, printers, and heat sealing machines are all can be used.
Processing Technology：
● Best results will be achieved with a screw L/D ratio ≥ 28:1. The blow-up ratio should be more than 1:3 to obtain the maximum production yield and the best quality.
● LT-M
● Newly made film feels brittle, , or crispy. Its elongation is low. This is due to severe dehydration during production. Therefore, the film needs to be settled for a 24- hour curing period to regain elongation and anti-tear strength before being used to make finish products, e.g. bag-making or printing.
● The minimum thickness of film made of such material can be 10 microns.
Remarks：
● The price of LT-M
● Due to the high starch content, the resin easily absorbs moisture. So it needs to be stored in a dry environment. The package should also be sealed properly to prevent the ingress of moisture.
● In case the resin is damp, it should be dried for 2 hours at 80ºC.
● Its processing temperature is 5ºC to 10ºC lower than that of PE. During processing, the temperature is correct when corn starch fragrance can be smelled at the hopper.
● It can be easily decomposed into soil friendly substances in microbial environment.