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Slipcover tailors offered clear vinyl or plastic slipcovers. These clear plastic slipcovers were available in large department stores such as Jordan Marsh or custom-made by artisans. In some cities in the northeast U.S., slipcover tailors were sometimes given the nickname "summertime millionaires" as their busy season was in the spring and summer.
Plastic wrap, cling film, Saran wrap, cling wrap, Glad wrap or food wrap is a thin plastic film typically used for sealing food items in containers to keep them fresh over a longer period of time. Plastic wrap, typically sold on rolls in boxes with a cutting edge, clings to many smooth surfaces and can thus remain tight over the opening of a ...
In 2023, preliminary figures indicate that over 400 million metric tons of plastic were produced worldwide. [3] If global trends on plastic demand continue, it is estimated that annual global plastic production will reach over 1.3 billion tons by 2060. [3] Major applications include packaging (40%) and building/construction (20%). [1]
[2] A fourth type of review, the systematic review, also reviews literature (the scientific literature), but because the term literature review conventionally refers to narrative reviews, the usage for referring to it is "systematic review." A systematic review is focused on a specific research question, trying to identify, appraise, select ...
In the United States, the most common core size found on lamination film is one inch (25- to 27-inch-wide film). Larger format laminators use a larger core, often 2 1 ⁄ 4 to 3 inches in diameter. Film is usually available in 1.5, 3, 5, 7, and 10 mil thicknesses. The higher the number, the thicker the film. A mil is one thousandth of an inch ...
They employ bridged bis-metallocene complexes of the type bridge-(Cp 1)(Cp 2)ZrCl 2 where the first Cp ligand is the cyclopentadienyl group, the second Cp ligand is the fluorenyl group, and the bridge between the two Cp ligands is -CH 2-CH 2-, >SiMe 2, or >SiPh 2. [35]
3 H 4 O 2) n or [–C(CH 3)HC(=O)O–] n. PLA is formally obtained by condensation of lactic acid C(CH 3)(OH)HCOOH with loss of water (hence its name). It can also be prepared by ring-opening polymerization of lactide [–C(CH 3)HC(=O)O–] 2, the cyclic dimer of the basic repeating unit. Often PLA is blended with other polymers.
Long-term changes in plastic meso-litter have been reported using surface net tows: in the North Pacific Subtropical Gyre in 1999, plastic abundance was 335,000 items per square kilometre (870,000/sq mi) and 5.1 kilograms per square kilometre (29 lb/sq mi), roughly an order of magnitude greater than samples collected in the 1980s.