Regarding the shelf life of biodegradable plastic bags, biodegradable plastic bags beyond the shelf life cannot be used, and the degradation time of biodegradable plastic bags is related to the environment in which they are located. In a normal daily environment, even after the expiration date (six to eight months), it will not disintegrate immediately. The appearance remains basically the same, but the physical properties have changed, and the strength and toughness have gradually deteriorated with time. When it is torn, it is as brittle as paper and can be torn into pieces (as shown in the figure below). These are the characteristics of starting to degrade.
So the key point for a biodegradable pouch is to keep it's self shelf life when packaging. If you need packaging for food, then the material is so important to make sure it is higher barrier. JTD could produced the fully biodegradable pouches with more than 3 layers to keep the bags utral barrier.
Typical Properties | Test Method | Units | Typical Values | ||||
Thickness | - | μm | 15 | 25 | 40 | ||
Average Thickness Tolerance （ %） | ISO4593 | % | ±3 | ±3 | ±3 | ||
Tensile strength | MD | ASTM D882 | MPa | 125 | |||
TD | 120 | ||||||
Elongation at break | MD | ASTM D882 | % | 100 | 100 | 100 | |
TD | 80 | 80 | 80 | ||||
Heat Shrinkage | MD | ASTM D1204 | % | 4 | 4 | 4 | |
TD | 1.5 | 1.5 | 1.5 | ||||
Dynamic COF | Untreated side / Untreated side | ASTM D1894 | _ | 0.6 | 0.6 | 0.6 | |
Surface Tension | Treated side | ASTM D2578 | mN/m | 44 | 44 | 44 | |
Untreated side | 34 | 34 | 34 | ||||
Haze | ASTM D1003 | % | 4.5 | 4.5 | 4.5 | ||
Light transmission | 94 | 94 | 94 | ||||
Gloss（angle 45°） | ASTM D2457 | % | 80 | 80 | 80 | ||
Water vapor permeability | GB/T 1037 | g/(㎡ * 24h) | 120 | 120 | 120 | ||
Melting point ℃
| GB/T19466.3-2004 | ℃ | 140 | 140 | 140 | ||
DENSITY
| ASTM D-1505
| g/cm 3
| 1.25 | 1.25 | 1.25 | ||
G.S.M | Analysis Balance | g/m 2
| 18.19-19.31 | 30.31-32.19 | 48.5-51.5 | ||
PLA performance similar to BOPP | |||||||
Application | Daily food packaging, heat-sealable packaging, industrial packaging Packaging films Fresh food films Twist films Adhesive tape films Window lamination films Paper covered films | ||||||
Corona outside, Heat sealable inside 外电晕，内热封。 Can be double side heat sealing 可做双面热封 | |||||||
Features | A Lower carbon footprint and additional end of life options compared to oil-based plastics High Mechanical Strength Excellent transparency and gloss Consistent surface energy for good printability Very Strong Seal
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Reel length (m) Standard 6000, 12000 and 18000 (other length on request) Reel width (mm) 300-1600 Core diameter (inches) 3 and 6 | |||||||
