what grade of polythylene should I use to manufacture garbage bag? ( i
it LDPE or HDPE or LLDPE). and which grade
-- ashara
----------------------------------------------------------------------- asharaf's Profile:
Linear low density usually, It has more stretch and tensile strength due to the branched molecular chains, so you can use a thinner gauge for the same strengh and save material cost. As for grade, well that opens a whole new can of worms.... But errr, isn't this the wrong group for this question?
Peter
Early bin liners were made from reclaimed stock, heavily weighted towards low density. I think the ones available now tend to be linear low density, with some high density added. The key to a good bag is to get a good web profile. A gauge variation across the web width will cause weak spots making the bags useless!
HTH
squirrell
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