bioplasticsMAGAZINE_1406
bioplasticsMAGAZINE_1406
bioplasticsMAGAZINE_1406
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Films | Flexibles | Bags<br />
New film bags<br />
for fresh food<br />
and electronics<br />
Measuring only eight microns (µm) thick, Natural<br />
Shield transparent film bags are currently<br />
the thinnest bags made out of Ingeo PLA.<br />
Fully 70 % of the Natural Shield film consists of Ingeo.<br />
Because Natural Shield bags are so thin, water<br />
vapor and gas transmission are high and many fresh<br />
foods are better preserved with these properties.<br />
Furthermore, aroma transmission is low, preventing<br />
odors from being released, and while the film has<br />
good stiffness it is still quiet when handled. Natural<br />
Shields high transparency showcases the bag contents,<br />
and the bags reclose naturally thanks to the<br />
film’s unique twist effect. A high strength film as<br />
compared to petroleum-based alternatives, Natural<br />
Shield is USDA certified biobased (69 %, ASTM<br />
D 6866) and DIN CERTO certified compostable (EN<br />
13432 / ASTM D 6400).<br />
Natural Shield film shrinks at energy saving low<br />
temperatures, making it an ideal choice for shrink-film<br />
applications. The film has a controllable shrink ratio<br />
for improved processing during shrink applications.<br />
The film does not contain BPA (bisphenol A), is food<br />
contact compliant, and offers superior printability. In<br />
addition to fresh food packaging, the film’s anti-static<br />
properties make it ideal for packaging electronic<br />
parts and components.<br />
Natural Shield key specifications include:<br />
Thickness (μm) 6-30<br />
Thickness deviation (%) ≤±15<br />
Width (mm) 200~600<br />
Width deviation (mm) ≤±20<br />
Tensile strength (MPa)<br />
Elongation at break (%)<br />
MD≥75 TD≥85<br />
MD50-150 TD50-120<br />
Initial shrink temperature °C 55-65<br />
Shrink ratio (%) (70 °C)<br />
Light transmittance (%)<br />
Haze (%)<br />
MD20-65 TD20-65<br />
≥85<br />
≤4<br />
O 2<br />
permeability (kg·m/m 2 sPa) ~3×10 -18<br />
H 2<br />
O vapor permeability (kg·m/m 2 sPa) ~8×10 -15<br />
Remarks: MD = machine direction, TD = transverse direction<br />
Shanghai Natural Shield New Material Technology<br />
Co. Ltd. developed the Ingeo based film. Formed<br />
by professors, students, and partners, this startup<br />
company relies on the outstanding engineering<br />
and technical knowledge of East China University<br />
of Science and Technology as well as the extensive<br />
business experience of its partners. Based on<br />
innovation and developing strategy, the company<br />
promotes novel environmentally friendly and<br />
sustainable polylactide-based films under the<br />
Natural Shield brand. MT<br />
www.natureshieldchina.com<br />
10 bioplastics MAGAZINE [06/14] Vol. 9
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