Film packaging is the most effective and economic way of producing multipacks of products for distribution and shipment purposes. Shrink wrap equipment is used to package products in a film that is heat shrunk around the product to create a very tight seal. There are many types of shrink equipment including shrink tunnels, lap sealers, automatic and manual L-bar sealers, multipackers, and side sealers. Once your product is wrapped in shrink film, it passes through a heat tunnel, which shrinks the film closely around the product.