r/plastic

Image 1 — A weird  Phenomenon about  matte PP plastic ?
Image 2 — A weird  Phenomenon about  matte PP plastic ?
Image 3 — A weird  Phenomenon about  matte PP plastic ?
▲ 3 r/plastic+1 crossposts

A weird Phenomenon about matte PP plastic ?

We compounded a matte PP with SEBS, but here is a weird phenomenon:When we inject matte PP in small template mould, our matte finish isn't as good as our competitors', but when applied to the client's large, standard product molds, the resulting matte finish is even more beautiful, like a flocked effect—very soft and evenly glossy. How can this be? The injection temperature of the client's large product is actually higher than the injection temperature of our sample mold, who can explain it?

u/Flat_Special_3386 — 10 days ago

Artist needs insight - flexible plastic rod?

Hi all - I'm an artist working on a project and I could use some advice. I create assemblies that I want to mount on the end of a plastic rod . The nexus of this idea is a cat wand toy, I literally stripped a cat wand and repurposed the rod. What I am aiming for is some deflection in the rod so the assemblies swing and bounce a little in the wind. The assemblies are light. I'm thinking maybe 6-10mm rod, or tube I guess would be okay.

When I started to look at plastics - whoa, overwhelm - so many different types! So - any idea where I could start to look at samples? What material is a cat wand most likely made of? Any insight is most greatly appreciated

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u/mercymayhem742 — 11 days ago

What's with the halt in plastics findings for the last 40 years?

I fell into a rabbit hole and have found that since 1839, there's been developments in plastics on average just a few years apart. The biggest logged jump between discoveries is from 1965 to the 1980's. Mostly, it's between five to fifteen years for updates in this timeline;

https://en.wikipedia.org/wiki/Timeline\\\_of\\\_plastic\\\_development

But there's nothing I can find past 1988. It's 2026; I can't believe that nothing has been found in 38 years with this past frequency. What am I missing? Are my internet skills too lazy?

Tl:dr; has there been further findings with different types of plastics in the last 40 or so years?

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u/discombobulate83 — 13 days ago

Microplastic Capture Filtration – Material Suggestions

**Hi, I’m working on a microplastic capture filtration project. Can anyone suggest cheap and easily available materials for the filter, along with their advantages and a simple setup?

Actually, our project is about removing microplastics from water, not air. We’re looking for a cheap and easily available household material that could potentially work as a filter medium. The idea is to test different materials and compare their effectiveness with existing filtration methods.

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u/marathimontustories — 12 days ago