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Polyvinyl chloride is formed in flat sheets in a variety of thicknesses and colors. As flat sheets, PVC is often expanded to create voids in the interior of the material, providing additional thickness without additional weight and minimal extra cost (see closed-cell PVC foamboard ).
Typical values for the Water Vapor Transmission Rate (WVTR or MVTR) of a 250 μm PVC film are around 3.0 g/m 2 per day measured at 38 °C (100 °F) and 90% RH and the Oxygen Transmission Rate (OTR) is around 20 mL/m per day. In order to overcome the lack of barrier properties of PVC film, it can be coated with PVDC or laminated to PCTFE or COC ...
Toy safety is the practice of ensuring that toys, especially those made for children, are safe, usually through the application of set safety standards. In many countries, commercial toys must be able to pass safety tests in order to be sold.
Vinyl chloride is an organochloride with the formula H 2 C=CHCl. It is also called vinyl chloride monomer (VCM) or chloroethene. It is an important industrial chemical chiefly used to produce the polymer polyvinyl chloride (PVC). Vinyl chloride is a colourless flammable gas that has a sweet odor and is carcinogenic.
The restriction states that the amount of these phthalates may not be greater than 0.1% mass percent of the plasticized part of the toy. Generally, the high molecular weight phthalates DINP, DIDP, and DPHP have been registered under REACH and have demonstrated their safety for use in current applications. They are not classified for any health ...
Among the earliest examples in the wave of new polymers were polystyrene (first produced by BASF in the 1930s) [6] and polyvinyl chloride (first created in 1872 but commercially produced in the late 1920s). [6] In 1923, Durite Plastics, Inc., was the first manufacturer of phenol-furfural resins. [137]
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Plastisol. A plastisol is a colloidal dispersion of small polymer particles, usually polyvinyl chloride (PVC), in a liquid plasticizer.When heated to around 180 °C (356 °F), the plastic particles absorb the plasticizer, causing them to swell and fuse together forming a viscous gel.