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Yarn business division

Products Yarn business division Eco-friendly Biodegradable PPF Yarn

Eco-friendly Biodegradable PPF Yarn

Goals of our technology development

Dongdo deeply sympathized with the global trend of developing ecofriendly materials, and focused on the oxidative biodegradation method with the addition of decomposition accelerators through an in-depth discussion on whether it could be possible to develop eco-friendly products that are cheaper and have superior physical properties.

We have put great effort into developing alternatives that can be directly applied to real life by producing affordable products of higher quality. Compared to the existing PLA products, our products show superior performance.

In particular, it is expected to be used in a variety of products throughout the industry thanks to the convenience of being able to adjust the storage period as desired by adjusting the amount.

Applications

  • Disposable fishing nets

  • Band for planting forest seedlings

Mechanism of decomposition accelerator

Step 1 : Polymer becomes low molecular weight
[ 117 days since burying biodegradable material ]

  • LDPE

  • Yulchon Chemical

  • FILMAX

[ 117 days since burying biodegradable resin with 1% decomposition accelerator added ]

  • LDPE

  • Yulchon Chemical

  • FILMAX

Step 2 : Biodegradation process

SEM Observation after 6 months of JIS K6953 Compost Burial

  • Test Date : May. 2012 ~ October. 2012
  • Test sample : Oxo-bioegradable additives + PP. Non-Woven Cloth (Pre-treated : 80℃ ×9days)
  • Test Laboratory : Chemicals Evaluation and Research Institute. Japan (CERI)

Result of biodegradation test in underground environment of resin with decomposition accelerator

  • Test method : ISO17556
  • Test sample : LDPE film (Addition of decomposition accelerator 0.3%

Test method of oxidation biodegradable resin

  • Hydrolytic biodegradable resin JIS K 6953, EN 13432
  • Oxidative biodegradable resin ASTM D 6954
    • This evaluates the degradation performance of each step (step 1: oxidative degradation, step 2: biodegradation) of the oxidative biodegradable resin. Finally, the evaluation of the environmental toxicity of the soil after biodegradation (step 3) is also carried out

Applications

  • Household items (dish sponges, etc.)

  • Running shoes

  • Disposable fishing nets