SEMANAT Knowledge Hub
Tools and resources for plastics buyers and converters
Two tools and three guides in English: a cost comparison of two alternative materials, a glossary of the terms used in data sheets and plastics trading, and guides on MFR / MFI, recycled pellets and PP types. Our other guides and articles are currently published in Polish.
Tools
Compare costs. Understand material specifications.
Two tools you can use right away: convert a price per kilogram into a cost per part, and look up what a term in a data sheet or listing actually means.
Part Cost Calculator
Two prices per kilogram converted into the cost per good part: density, delivery costs, reject rate, cycle time and trial. Runs in your browser, stores nothing.
Open the calculator →Plastics Glossary — EN / PL / DE
136 terms used in technical data sheets, test methods and plastics trading: English, Polish and German equivalents, units, standards, sources and practical guidance for sourcing and processing materials.
Open the glossary →More resources
Guides, materials and development
Three guides are available in English; the other guides and articles are currently published in Polish. The materials and development pages are available in English. The language is marked on each card.
Guides in English
MFR / MFI: what it means — and what it does not tell you
What the melt flow rate measures, why the test conditions are part of the result, why the same MFR does not mean the same material — and how to state an MFR requirement in an enquiry.
Read →PRACTICEPP and PE recycled pellets: what to check before buying — and when the next lot behaves differently
What to agree before buying regranulate or regrind, how to compare the next delivery with the lot that worked, which tests to order for which symptom and what to send the supplier.
Read →BASICSPP homopolymer or copolymer: which type fits your application?
Homopolymer, random copolymer and impact (heterophasic) copolymer: what the type decides in the part, typical selection mistakes, an outdoor housing example and what to put in an enquiry.
Read →Next
Couldn't find what you need?
The knowledge hub is a starting point. We select material for the application and assess a lot by what is known about it.
Looking for a material
Describe the product, the process and the requirements. We match the material to what the part has to do — not to a symbol from a previous offer.
CONTACT US →Have material or a lot to offer
Send what you know: origin, form, test results. We will say which buyers the lot suits and what is worth measuring.
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