Knowledge Bank
A way to attach the outsole and midsole to the upper body using “cement”, or more commonly: glue. Cemented shoes be found in all price ranges for most footwear types.
A highly renowned construction method considered to be one of the best for shoes constructed with a welt. A method for stitching outsole to welt and then the welt to outsole. Due to this two level stiching resoling is relatively easy to conduct.
Vulcanization is the process for transforming natural rubber into a cured, more durable rubber. It will become less sticky and since the rubber normally melts slightly in the controlled vulcanization process, making it bond with surrounding materials. One of the most common processes to make footwear.
Ankle-high boot identified by the elastic on sides instead of front lacing, round toe and low heel. Also common with loops on back to grab when putting shoe on.
Ankle high boots with open lacing system and normally rounded toe box. The term Chukka boot is not describing one kind of shoe but rather a family sharing characteristics.
Wide group of shoe comprising various different models, explain below. Common among all is that they don't have any lacing system but is just slip in. Normally it's a moccasin stitch on vamp, however it´s not necessarily functional. There are both loafers of more dressed character and more casual versions.
EVA or ethylene-vinyl acetate, sometimes known as PEVA, poly ethylene-vinyl acetate, is a polymer based material consisting of ethylene and vinyl acetate merged together, a copolymer. EVA also popularly known as expanded rubber or foam rubber.
Tunit or resin rubber outsoles were developed in the early 1950´s with the purpose to imitate leather. With a base of vulcanized rubber made with synthetic SBR rubber reinforced with styrene resin. Normally it´s produced in sheets and cut into shape.
There are several different kind of TPEs, thermoplastic elastomers, also known as TPR, thermoplastic rubber. The most common in outsole production is SBS, Styrene-butadiene-styrene, SEBS, Styrene-Ethylene/Butylene-Styrene and TPU, thermoplastic polyurethan. Normally when TPR is mentioned it refers to SBS. TPU is widely known under it´s correct name. EVA is also a thermoplastic elastomer but is handled in a separate article.