Word: moistureproof
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...toughest task was to develop a throwaway that was soft yet strong and moistureproof. For that, the engineers came up with a three-part design consisting of a quick-drying inner lining of soft rayon-like material, a middle layer of absorbent tissue wadding, and an outer sheet of waterproof polyethylene. By way of acknowledging that babies differ widely, the designers made Pampers in three sizes-"newborn," "daytime" and "extra strength" for overnight...
Safety glass is a double sheet with a transparent filler or binding layer between. In the old glass the filler was cellulose acetate. In the new it is polyvinyl acetal resin, a synthetic plastic made from acetylene. In an automobile this flexible, yielding pane is something like a transparent, moistureproof, windproof curtain. It is expected to cut down the number and seriousness of highway injuries due to sudden stops...
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