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Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. Polycarbonate lenses also protect the eye from UV light.
The manufacture of plastic film for products such as food packages, shopping bags, and continuous sheeting is achieved using a blown film line. [5] This process is the same as a regular extrusion process up until the die. There are three main types of dies used in this process: annular (or crosshead), spider, and spiral.
Paper straws are in demand as a sustainable alternative to plastic straws, and they are made by a different manufacturing process. Plastic straws are typically made from polypropylene, but paper straws are made from layers of food-grade paper bonded together with water-based or hot melt adhesives, using gum powder and packing materials.
A die in polymer processing is a metal restrictor or channel capable of providing a constant cross sectional profile to a stream of liquid polymer.This allows for continuous processing of shapes such as sheets, films, pipes, rods, and other more complex profiles.
A converter is a company that specializes in modifying or combining raw materials [1] such as polyesters, adhesives, silicone, adhesive tapes, foams, plastics, felts, rubbers, liners and metals, as well as other materials, to create new products. Materials such as paper, plastic film, foil and cloth often are produced in long, continuous sheets ...
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 ...
The move by Trump — who has long railed against paper straws, and whose 2019 reelection campaign sold Trump-branded reusable plastic straws for $15 per pack of 10 — targets a Biden ...
Thermoforming is a manufacturing process where a plastic sheet is heated to a pliable forming temperature, and stamped to a specific shape in a 2-part mold. Or a vacuum can be used to pull the plastic sheet onto the mold in a simplified process known as vacuum forming. The excess material is trimmed off and recycled.