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The plant biomaterial plastic(PBM-P) is a compound of natural plant-based polymer and the PLA like resins,the polymer itself is a mixture of starch,fiber powder,plant glue and plant oil,with special improvement process.The PBM-P appears to be sand or granulated particles,characterizing exactly the same as regular thermalplastic.PBM-P formulation technology and processing are listed into China patents for invention£¨Patent#£ºZL00114396.4£»ZL00114397.2£© |
 Properties |
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Excellent thermal plasticity,compatibility and possibility. |
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High impact toughness,strength and flexibility. |
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Minimal forming shrinkage,no distortion of shape in particular for large size works . |
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Originated from mother nature biomass,no hazardous substance. |
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Commercial products can be disposed freely,degradable in garbage landfills and or composts . |
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Higher performance price ratio than PLA degradable resins with its excellent overall performances and lower costs |
| Applications |
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PBM-P products can be used to replace the regular plastic for injection,in particular suitable for making of kitchenwares,drinkwares,hotel disposable items, seedling containers,flower pots and types of FMCG packaging |
| Performance Parameters |
| Item |
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Parameter |
Measurement |
| Particle Features |
diameter |
grain like or 2-6mm particle |
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appearance |
white to light yellow |
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Density |
1.0~1.1 |
g/cm3 |
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moist content |
1.3 |
% |
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softening point |
130~150 |
¡É |
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melt flow |
10~16 |
g/10min |
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shore HA |
75 |
HA |
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mold shrinkage |
0.2~0.5 |
% |
Physical Features of Moulded Products |
longitudinal
tensile strength
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7.95 |
MPa |
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Lateral tensile strength |
5.17 |
MPa |
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longitudinal
elongation
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149 |
% |
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lateral elongation |
149 |
% |
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longitudinal tearing |
27.9 |
kN/m |
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lateral teating |
31.5 |
kN/m |
| Degradability |
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Growth grade 5 for fungi and bateria,degradaded by microbes |
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Content of Toxic Elements |
Pb |
<2.5 |
mg/kg |
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As |
<2.5 |
mg/kg |
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Cr |
<2.5 |
mg/kg |
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Hg |
<2.5 |
mg/kg |
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Cd |
<2.5 |
mg/kg |
| Inspection and Test |
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Approved by Hubei Provincial Quality Monitoring Bureau and China Environmental Products Quality Monitoring and Inspection Center,and certified by EU SGS and the USA FDA. |
| Usage |
| For injection use,cautions are below£» |
Caution |
Parameter
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Injection volume(workpiece and runner) |
40-80% of the machine¡¯s maximum injection volume
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Clamping force |
400~700kg/cm2 |
Melt Temperature
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140~190¡É for the fully degradable PBM-P
160-210¡É for the degradable PBM-P
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Injection pressure |
The first injection is set 60~85%
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backpressure |
Appropriate backpressure helps plastisizing and air-out, 5~10kg/cm2
Is recommended
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Workpiece cooling |
Blowing or natural cooling,no water.
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Cleaning machine |
The most effective cleaners are PBM-P like polmers,such as PE,PP.Prior to maching,use PE as cleaner,at stop use PP,PE and PS. |
Use of scraps |
Clean and fully dry scraps can be almost 100%,a ratio of 10-30% is recommended
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| Shelf Life |
| Two years in airtight storage |
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