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I wonder if the QA standards are too high for throwaway goods. Is a soda bottle a high-precision moulding that needs super-precise tolerances? And if so, are
by hakfoo 3y ago
I wonder if the QA standards are too high for throwaway goods.
Is a soda bottle a high-precision moulding that needs super-precise tolerances? And if so, are there ways to redesign this to reduce the constraints?
- 542458 3y agoSoda bottles are injection-blowmolded, which requires fairly predictable elongation under heat and pressure. I do know using 100% post consumer plastic would affect elongation, but I don’t know how significant the effect is or how hard it would be to compensate for. Fwiw they do need fairly tight tolerances otherwise the cap won’t seal and the product will leak or spoil.
- wuming2 3y agoWould it help to increase thickness? More weight and material, increased cost, to factor in the reduced trail of pollution every piece of single use plastic has?
- ygra 3y agoThis probably leads you to reusable bottles, which are just cleaned and refilled again.
- wuming2 3y agoWould be the next logical step. But without strong incentives, either intentional rationing of row materials or the equivalent sharp increase of their cost, I don’t see any indication producers and retailers would adopt it.
- droopyEyelids 3y agoThe problem is the plastic we see as a uniform material is a chemical cocktail of the polymer, plasticizers, chain extenders, curing agents, lubricators and process aids, stabilizers, colorants and more. Size tolerance, the way plastic flows through the molding equipment, temperature at which its blown, how much shit leeches into the beverage, how strong the resulting container is, all that factors in. Plastics are a complex technology and people are optimizing what we can do with them as across every dimension much as possible