Thermal laminates and laminating method of food packaging films
US7281360B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2005 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Aug 8, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2553/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The specification discloses a method for forming a packaging film. According to the method, a packaging film base layer is provided having a first side and a second side and formed from polymeric materials. At least one additional layer of polymeric material is extrusion coated onto the first side of the base layer. A heat sealable layer is applied onto the second side of the base layer. The method also includes providing a packaging film outer layer having a first side and a second side and formed from polymeric materials. At least one of the outer layer first and second sides is capable of being printed thereon and selected packaging information is printed onto at least one side of the outer layer. Preferably, the outer layer is reverse printed on its second side. Finally, the method includes thermally laminating the base layer and outer layer to one another using a combination of heat and pressure. A packaging film and a method for packaging food products with the film are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.