Biodegradable kraft paper tea sachet bags
Material:White kraft paper+Bio PE
Size:7.5*8cm for tea.
Xiongxian Juren Paper & Plastic Packing Co Ltd is interested in evaluating Wells’ “Reverte” oxobiodegradable masterbatch for use in PE film. Reverte oxo-biodegradable masterbatch BD 92771 has been recommended for their application. This product contains a mixture of a metal ion pro-oxidant and a photoinitiated initial degradation inhibition package. The grade utilised is polyethylene based and is generally suitable for inclusion in a broad range of polyethylenes including high density polyethylene (HDPE), low density polyethylene (LDPE) and linear low density polyethylene (LLDPE). The formulation has been developed for a 1% addition to give thin section PE films maintained at 20oC a controlled in-house shelf life of approximately 18 months, a further dwell time, normally around 2 to 6 months after photoinitiation and then a rapid breakdown of film properties resulting in acute embrittlement, normally after around 8 - 18 months. However, thicker section products, some stabiliser packages and specific polymer blends and pigmentation can significantly extend this embrittlement period and thinner sections, mineral fillers etc. can shorten it. Xiongxian Juren Paper & Plastic Packing Co Ltd supplied one sample for evaluation of its oxobiodegradable properties. The sample was a translucent PE film detailed as being produced from LDPE. It measured ~38 µm in thickness and was submitted as containing 1% BD 92771. A section was cut out and labelled with a description/internal testing number for identification. The sample was subjected to testing of its oxo-degradable properties in Wells Plastics' laboratory at their plant in Stone, Staffordshire, UK.
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