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A major polycarbonate market is the production of compact discs, DVDs, and Blu-ray discs. [13] These discs are produced by injection-molding polycarbonate into a mold cavity that has on one side a metal stamper containing a negative image of the disc data, while the other mold side is a mirrored surface.
The strength of the plastic after welding would decrease with an increasing amount of fillers in the matrix compared to the bulk material. [16] Use of abrasive fillers can affect the tool used for welding. Abrasive fillers will degrade the welding tools faster, for example, the surface of the ultrasonic horn in contact with the plastic.
Thermoforming is a manufacturing process where a plastic sheet is heated to a pliable forming temperature, formed to a specific shape in a mold, and trimmed to create a usable product. The sheet, or "film" when referring to thinner gauges and certain material types, is heated in an oven to a high-enough temperature that permits it to be ...
Besides plastics production, plastics engineering is an important part of the industrial sector. The latter field is dominated by engineering plastic as raw material because of its better mechanical and thermal properties than the more widely used commodity plastics .
Global production in 2022 was estimated to be in the region of 10 million tonnes. [8] BPA's largest single application is as a co-monomer in the production of polycarbonates, which accounts for 65–70% of all BPA production. [9] [10] The manufacturing of epoxy resins and vinyl ester resins account for 25–30% of BPA use.
An SLS machine being used at the Centro de Pesquisas Renato Archer in Brazil.. Selective laser sintering (SLS) is an additive manufacturing (AM) technique that uses a laser as the power and heat source to sinter powdered material (typically nylon or polyamide), aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure.
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The trend towards thin wall molding continues to increase in many plastic industries as plastic material and energy costs continue to rise and delivery lead times are squeezed. [2] The following industries make use of thin wall molding: food packaging ( e.g. food containers and lids) [3] automotive (e.g. both structural and non-structural car ...