Process for making a bulked fabric laminate
Patent 5814178 Issued on September 29, 1998. Estimated Expiration Date: 
June 30, 2015. 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.
June 30, 2015. 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 ReferencesInventorAssigneeApplicationNo. 496876 filed on 06/30/1995US Classes:156/290, Bonding of facing continuously contacting laminae at spaced points only156/85, Subsequent to assembly of laminae156/163, Bonding of sheets or webs only156/229, With stretching428/198, Spot bonds connect components428/315.9Composite has more than two layersExaminersPrimary: Bell, James J.Attorney, Agent or FirmForeign Patent References
International ClassB32B 031/00AbstractThe present invention provides a process for producing a three dimensionally texturized liquid resistant laminate having a fibrous nonwoven layer and a liquid resistant layer. The process has the steps of placing the fibrous layer and the liquid resistant layer in juxtaposition to form a laminate, attaching the fibrous layer and the liquid resistant layer at a plurality of spaced-apart bond locations, heating the bonded laminate to a temperature that activates the latent shrinkability of the liquid resistant layer, and allowing the heated laminate to retract such that the liquid resistant layer shrinks and said fibrous layer forms gathers between said bond locations, thereby forming a three dimensional texture and heat annealing the laminate. The invention additionally provides a three dimensionally texturized laminate having a fibrous layer and a nonelastic liquid resistant layer. The layers of the laminate are joined at a multitude of spaced-apart bond sites, and the laminate is heat annealed, wherein the fibrous layer forms gathers between spaced-apart bond sites to provide the three dimensional texture and the laminate has a liquid resistant layer to fibrous layer length ratio between about 0.7 and about 0.95.Other References
Field of SearchWith shrinking of material of laminaSubsequent to assembly of laminae Bonding in stressed condition of at least one prestressed element Bonding of sheets or webs only Running length web With stretching Bonding of facing continuously contacting laminae at spaced points only Wrinkled, creased, crinkled or creped Aligned or parallel nonplanarities Pleats or otherwise parallel adjacent folds Spot bonds connect components MICROFIBER (LESS THAN 100 MICRON DIAMETER) Composite has more than two layers | |
