The introduction of dissolving film to cleaning products has simplified many household tasks. Many opt for these products as a means of eliminating mess and waste with pre-measured liquids in tablet form. Exactly what is the film on dishwasher tablets though?
Dishwasher tablets are typically encased in a film designed to dissolve during the wash cycle. This film is often made from polyvinyl alcohol (PVA), a water-soluble plastic.(1) In the case of Finish® products, this biodegradable film is 100% water-soluble. When the dishwasher starts, the high temperatures and water pressure cause the PVA film to break down. The film dissolves completely, releasing the detergent inside and allowing it to work on your dishes.
Naturally, people often wonder what happens to the plastic on dishwasher pods. The dissolvable film does not leave behind any solid residue. Instead, it breaks down into water-soluble components that are carried away with the wash water. This process ensures that no plastic particles are left in your dishwasher or on your dishes, and that the detergent is released effectively, and any remnants of the film are completely washed away.
(1) https://home.howstuffworks.com/home-improvement/household-hints-tips/cleaning-organizing/dishwasher-pods-or-powders.htm#pt2
