封边对表面完美无瑕,产品经久耐用至关重要。此过程中,开始缠绕外包装过程前或封边带开始上胶前,需要在板材边缘涂上粘贴膏。这样,可改善板材耐环境损坏(例如水分渗入)的能力。沿着板材形成一个光滑平整的表面,使得外包装缠绕和封边带涂覆轻松容易、平整均匀。
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