Method for making structural foams with facing sheets
Patent 4130614 Issued on December 19, 1978. Estimated Expiration Date: 
February 2, 1996. 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.
February 2, 1996. 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 References 2727278 2728702 2841205 2993233 3082486 3283386 3286004 3382302 3911190 Refrigerator construction Patent #: 4005919 InventorAssigneeApplicationNo. 05/654617 filed on 02/02/1976US Classes:264/46.4, Shaping material and uniting to a preform or solidified layer264/257, One component is a fibrous or textile sheet, web, or batt264/45.3, Incorporating particulate material, fibers, or batts in a random distribution within a foamed body264/46.5, Uniting spaced preforms or solidified layers by introducing foamable material therebetween264/46.7, Utilizing metal part or reinforcement428/299.4, Glass fiber428/319.1InorganicExaminersPrimary: Anderson, PhilipAttorney, Agent or FirmInternational ClassesB29C 44/02 (20060101)B29C 44/14 (20060101) B29C 70/08 (20060101) B29C 70/10 (20060101) B29C 70/22 (20060101) AbstractA method for forming a structural foam article having a cellular core, a high density integral skin with fiber reinforcement embedded therein, and exterior facing sheets so as to substantially avoid blistering of the facing sheets, is disclosed. The foam article is prepared by foaming an expandable resin composition between the fiber reinforcing material and facing sheets. The resin has a predetermined viscosity which is a direct function of the porosity of the reinforcing material and an indirect function of the foam initiation time.Field of SearchUniting spaced preforms or solidified layers by introducing foamable material therebetweenComposite article making Incorporating particulate material, fibers, or batts in a random distribution within a foamed body Autogenously formed surface layer or base supplies surface (e.g., skin forming, etc.) Between at least two moving surfaces With roller applied pressure One component is a fibrous or textile sheet, web, or batt Shaping material and uniting to a preform or solidified layer Utilizing metal part or reinforcement Including surface treatment of porous body By gas forming or expanding Liquid to gas phase change Chemical blowing | |
