Ukupakisha kwesikhwama se-zipplock okucindezelekayo ukupakisha okuthambile okunamandla okulula ukukushintsha. Ukupakisha kwepulasitiki okuguquguqukayo kungenye yezingxenye ezikhula ngokushesha kakhulu zokupakisha futhi kuvame ukwenziwa ngama-polymers epulasitiki afana ne-polyethylene ne-polypropylene.