elplast launches press to close zippers for packages containing powdered and granular products such as ground coffee, cocoa powder, sugars, and other similar products.these closures also include a unique additive helping repel powders from the press to close zipper profiles further enhancing the effectiveness of the closure for powdered and granular products. the unique design and additive used in elzip powder resistant zippers offer an effective combination helping eliminate the irritation caused by press to close zippers failing to function properly after becoming clogged by powdered and granular products.