Thermosetting plastics, however, undergo some change during forming and result in a structure in which the molecules are cross-linked and form a network of interconnected molecules." (1) In general thermoplastic materials can be formed repeatedly by heating or molding because their basic chemical structure is unchanged from its initial linear form. "One method of classifying plastics is by the terms thermoplastic and thermosetting.
All have various costs, pros and cons depending on where and when you plan on using them.įigure 1: Polyethylene in bead form (prior to being molded) For instance if they are going to market the kayak for touring, sea expeditions, or playing in the sea (away from rocks and ledges) they will likely select a composite or linear polyethylene construction and some may opt for a cross molecular chain polymer or a thermoform hull. They will select the right type of material based on what they will market the kayak for. There are a few types of materials available to the kayak manufacturer.
To answer this you really need to ask yourself a few questions: What type of material should the kayak be made of?
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