Shanghai Heat Shrink Film Packaging Machine Wholesale Prices _ Supplier Quotation Sheet [Wenzhou Kaishao Machinery Co., Ltd.] The heat shrink machine wraps the heat shrinkable film around the product or packaged item, then heats it to make the film shrink tightly around the product or packaged item, fully displaying the item's appearance, enhancing the product's display and sales appeal, and adding to its aesthetic appeal and perceived value.