Laminated Film Materials and Processes for Manufacturing Thereof and Uses Thereof
AssigneeOptifresh, LLC
InventorsToby R. Thomas, William P. Belias
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Abstract
Provided herein are laminated films with active agents, such as volatile anti-microbial agents, suitable for use as food packaging materials. Also provided herein are bags made from such laminated films, as well as methods of manufacturing such laminated films.
Claims46
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A method of manufacturing a plurality of laminated film bags, comprising:
- a) providing a roll of a barrier film comprising barrier resin encased within transmission resin;
- b) providing a roll of a transmission film comprising transmission resin;
- c) directing the barrier film and transmission film towards a lamination nip;
- d) dispensing a liquid active on a surface of the barrier film prior to pulling the barrier film and the transmission film through the lamination nip,
- wherein the surface of the barrier film is adjacent to the transmission film, and
- wherein the liquid active comprises a volatile compound;
- e) pulling the barrier film and the transmission film through the lamination nip, thereby spreading the liquid active between the barrier film and the transmission film and producing a laminated film,
- wherein an interface is formed by the barrier film and the transmission film,
- wherein at least a portion of the barrier film is thermoplastic welded to the transmission film at the interface, and
- wherein the liquid active at least partially holds the barrier film and the transmission film together at the interface;
- f) heat sealing edges of the laminated film to minimize loss of liquid active;
- g) folding the heat sealed film using a V-folder, wherein the transmission film becomes adjacent interior transmission layers and the barrier film becomes exterior barrier layers;
- and
- h) cut sealing the folded film to produce the plurality of laminated film bags.
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Dependencies are inferred from the claim text.