What are plastic moulded zips made from?
Plastic moulded zips are normally made from Polyester Tapes and Poly Oxy Methylene (POM) teeth. Alternative materials can be used for teeth such as Polypropylene for clear teeth materials. Other more highly technical plastic materials can be used for more specialist end use. Zip tape is generally polyester.
What is the difference between sewn coil and spiral zips?
Spiral zips are made from integrally weaving monofilament into the centre of the zip as one continuous process. Because this process only involves two materials this is a more quality efficient process. See the Product Information on our website.
Why are sewn coil zips sometimes called nylon zips?
Previously these zips may have been made from a range of manmade materials like nylon, polyester, polypropylene, poly butyl phthalate (PBT). Nylon was a common material used for zips due to its smoother feel and so this remained as a name for this category of zips.