Products

Oxo-Biodegradeable Straw
We are the first straw producer to manufacture PP Drinking Straw under d2w® technology with Oxo-Biodegradeable process. 

d2w® is an additive technology that is added into the basic polymer resin during the manufacturing process.

 

This process will breaks the molecular chain and plastic starts degrading at end of pre-determined useful life.

The process of oxidation – caused by light, heat and stress

Polyolefin consists of long entangled molecular chains. There is a backbone of Carbon atoms to which Hydrogen atoms are attached.

The catalytic effect of the d2w additive breaks these chains by generating free radicals. Theses free radicals combine with the available oxygen atoms and create hydroperoxides  - which are the precursors to full bio-degradation.

After the degradation process the harmless residues are CO2, H2O and Biomass

 The advantages of d2w® eco-compatible plastics are many :

1.       It will degrade within the timescale specified

2.       It will not degrade prematurely

3.       Until it degrades it is just as strong and serviceable as conventional plastic

4.       It a product with  Food contact approval (based on 2002/72/EC and US FFDC Act and regulations) and it doesn't content heavy metals (defined by 94/62/EC Art 11 as Lead, Mercury, Cadmium or Hexavalent Chromium)

5.       It can be recycled and can be made from recyclate

6.       It does not just fragment but totally degrades to nothing more than CO2, water and humus, leaving no harmful residues

The plastic product will become brittle and disintegrate into tiny flakes. As the chains continue to reduce in size, oxygen is permitted to bond with the carbon and produce CO2. 

The molecular mass descends to below 40,000u and at that stage, the material effectively becomes water wettable and micro-organisms can access the carbon and hydrogen.

 We choose d2w instead of starch plastics made from sugar cane, sweet potato, corn and other agriculture products, as it does not compete with food crops. 

As we all know a food crisis is the last thing we need and with a growing population and changing climate patterns  becomes more and more a real threat. 

Adding to it by using food crops to produce plastic and biofuel seems a bit counterproductive to us.

 

 

Terminology

  • "Degradable Plastic" is normally used to describe plastic which will degrade in a shorter timescale than normal plastic.
  • "Biodegradable Plastic" or "Bioplastic" is plastic which degrades due wholly or partly to the influence of micro-organisms. It may be oil-based plastic or crop-based plastic.
  • "Oxo-degradation" is defined by CEN (the European Standards Organisation) in TR15351as "degradation identified as resulting from oxidative cleavage of macromolecules.
  • "Oxo-biodegradation" is defined in TR 15351 as "degradation identified as resulting from oxidative and cell-mediated phenomena, either simultaneously or successively." Symphony's d2w plastic falls into this category.
  • "Hydro-degradation" is defined in TR 15351 as "degradation identified as resulting from hydrolytic cleavage of macromolecules.
  • "Hydro-biodegradation" is "degradation identified as resulting from hydrolytic cleavage of macromolecules and cell-mediated phenomena, either simultaneously or successively." The "compostable" plastics normally fall within this category.
  • "Compostable plastic" is normally used to describe hydro-biodegradable plastic which can comply with the composting Standards (EN13432, ASTM D6400, D6868, ISO 17088 and Australian Standard 4736-06. However, trials are ongoing which show that oxo-biodegradable plastic can be composted satisfactorily in industrial composting facilities. Composting is a man-made process which works to a short timescale, and is not the same as biodegradation in the environment.
  • "Bio-based plastic" is normally used to describe plastic which is derived from vegetable matter such as corn-starch.
  • Oxo-biodegradable plastics will biodegrade in the presence of oxygen in a timescale which can be approximately determined by the chemical formulation which is added to normal plastic at the extrusion stage. They are therefore "Controlled-life" Plastics.
  • Hydro-biodegradable plastics are intended for composting, and will biodegrade only if they are in a highly-microbial environment such as a composting plant. The rate of biodegradation cannot be determined at manufacture. Although hydro-biodegradable plastics are designed for composting, 90% of the plastic must (as indicated above) be converted to CO2 gas within 180 days. They therefore contribute to climate change but not to the improvement of the soil. They are also much more expensive and many of them are not strong enough unless mixed with oil-based plastic.