Non-fogging sheet and its production
Patent 5273812 Issued on December 28, 1993. Estimated Expiration Date: 
December 24, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 24, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesLamination process and apparatus Method and apparatus for forming an extremely thin film on the surface of an object Radiation cure release coatings without silicone Patent #: 5037668 InventorsAssigneeApplicationNo. 773664 filed on 12/24/1991US Classes:428/220, Physical dimension specified156/247, With stripping of adhered lamina156/273.7, Applying pressure before electrical, magnetic, or radiant energy428/409, SURFACE PROPERTY OR CHARACTERISTIC OF WEB, SHEET OR BLOCK428/411.1COMPOSITE (NONSTRUCTURAL LAMINATE)ExaminersPrimary: Ryan, PatrickAssistant: Jewik, Patrick Attorney, Agent or FirmInternational ClassB32B 009/00AbstractA method for producing a thick film type of non-fogging sheets having a thickness of 30 μm or more comprises the steps of: preparing a solvent-free composition comprising (a) a polymer, (b) a hydrophilic monomer and (c) a surface active agent and having a viscosity of 50,000 cP or less, applying this composition as a coating on the surface of a backing film without recourse to any solvent, and crosslinking the thus coated composition by exposure thereof to ionizing radiation, thereby forming a hydrophilic film having a thickness of 30 μm or more.Other References
Field of SearchOrganic baseTreating between rollers (e.g., calendering, etc.) With heating (e.g., heated roller, etc.) Applying pressure before electrical, magnetic, or radiant energy To polymerize or cure material in work Running or continuous webs of indefinite length With stripping of adhered lamina Synthetic resin containing Delaminating, per se SURFACE PROPERTY OR CHARACTERISTIC OF WEB, SHEET OR BLOCK COMPOSITE (NONSTRUCTURAL LAMINATE) 1 mil or less Physical dimension specified MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC. | |
