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Plastic joining is the method of joining semi-finished products of plastic materials together or to other materials as a fabrication process or damage repair. Joining methods can be classified into three categories: Mechanical fastening, Adhesive bonding, Welding.
Well-suited for medical industry; No need to employ equipment for removing welding fumes as those are not produced in this process; Following are the disadvantages of ultrasonic welding: Depending on part's design, fixtures can be expensive; While the process is commonly used for welding of small parts, it is not easily adopted for larger ...
Plastic is the generic name for a family of synthetic materials derived from petrochemicals.It is often product of two or more components. There are many families of plastics and polymers being used in construction industry, such as acrylics, composites, expanded polystyrene, polycarbonates, polyethylene, polypropylene, and polyvinyl chloride.
When bonding plastics, in particular with solvent-based adhesives, diffusion processes can also play a role. In this case, the plastic at the substrate surface is dissolved by the solvent contained in the adhesive. This leads to an increased mobility of the plastic's polymer chains, which in turn allows penetration by those of the adhesive.
Ultrasonic welding is an industrial process whereby high-frequency ultrasonic acoustic vibrations are locally applied to work pieces being held together under pressure to create a solid-state weld. It is commonly used for plastics and metals, and especially for joining dissimilar materials. In ultrasonic welding, there are no connective bolts ...
Implant induction welding is a joining method used in plastic manufacturing. The welding process uses an induction coil to excite and heat electromagnetically susceptible material at the joint interface and melt the thermoplastic. The susceptible material can be contained in a gasket placed between the welding surface, or within the actual ...
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Plastics are generally divided into two categories, which are "thermosets" and "thermoplastics." A thermoset is a plastic in which a chemical reaction sets the molecular bonds after first forming the plastic, and then the bonds cannot be broken again without degrading the plastic. Thermosets cannot be melted, therefore, once a thermoset has set ...