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AssigneeWeyerhaeuser Company
InventorsLee E. Perdelwitz, Jr., Paul G. Gaddis, Ron H. Iff, Michael E. Cotie, Amar N. Neogi
Estimating the term…
Materials have at least one layer comprising a mixture of thermoplastic and other fibers. This latter layer may be thermobonded together and then densified along at least a section of the eventual peripheral edge margin of an article to be formed from the material. Thermoplastic material-containing cover sheets may also be secured to the core and densified in this manner. The entire eventual peripheral edge margin of the article is typically densified. Fire retardant materials may be thermobonded within the layer to fix them within the article. The densified edge also helps to fix these materials in place. The composite materials are used in manufacturing infant car seat liners and other articles. Fire retardant films may be included as cover sheets for these materials. These films are typically bonded at every point of contact to an underlying core.
A fire resistant infant seat liner having a lower leg supporting section, a central seat supporting section and an upper body supporting section, the infant seat liner comprising a thermobonded mixture of thermoplastic and natural fibers, the thermobonded mixture including a fire resistant material in the amount sufficient to increase the fire resistance of the thermobonded mixture above the fire resistance of the thermobonded mixture without the fire resistant material, the infant seat liner having a flame propagation rate of no greater than 4.5 lineal inches per minute.
A fire resistant infant seat liner having a lower leg supporting section, a central seat supporting section and an upper body supporting section, the infant seat liner being comprised of a thermobonded mixture of thermoplastic and natural fibers of a first fire resistance, a layer of a material of a second fire resistance greater than the first fire resistance on at least one surface of the thermobonded mixture, and a first cover sheet mounted to the thermobonded mixture so as to overlay the layer, the infant seat liner having a flame propagation rate of no greater than 4.5 lineal inches per minute.
A fire resistant infant seat liner having a lower leg supporting section, a central seat supporting section and an upper body supporting section comprising a liquid permeable facing sheet, a core of an absorbent material of a first fire resistance, and a backing sheet of a material of a second fire resistance greater than the first fire resistance mounted to the core with the core disposed between the facing and backing sheets, the liner having a flame propagation rate of no greater than 4.5 lineal inches per minute.
A fire resistant disposable infant seat liner having a lower leg supporting section, a central seat supporting section and an upper body supporting section, the infant seat liner being comprised of an absorbent core, a liquid permeable facing sheet at one side surface of the core and a liquid impermeable backing sheet at the other side surface of the core, the facing and backing sheets being bonded to the core at every point of contact with the core so as to provide a composite infant seat liner, the composite infant seat liner having a backing sheet of a greater fire resistance than the fire resistance of the core, the liner having a flame propagation rate of not greater than 4.5 lineal inches per minute.
A fire resistant disposable infant seat liner having a lower leg supporting section, a central seat supporting section and an upper body supporting section, the infant seat liner being comprised of an absorbent core, a facing sheet at one side surface of the core and a backing sheet at the other side surface of the core, the facing and backing sheets being bonded to the core at every point of contact with the core so as to provide a composite infant seat liner, the composite infant seat liner having a flame propagation rate of no greater than 4.5 lineal inches per minute.
A disposable infant seat liner comprised of an absorbent core, a liquid permeable facing sheet at one side surface of the core and a liquid impermeable backing sheet at the other side surface of the core, the facing and backing sheets being bonded to the core at every point of contact with the core so as to provide a composite infant seat liner, the composite infant seat liner having a core which includes a fire resistant material in the amount sufficient to increase the fire resistance of the infant car seat liner without the fire resistant material, the infant car seat liner having a flame propagation rate of no greater than 4.5 lineal inches per minute.
A fire resistant disposable infant seat liner having a lower leg supporting section, a central seat supporting section and an upper body supporting section, the infant seat liner being comprised of nonwoven fibrous material and having a flame propagation rate of no greater than 4.5 lineal inches per minute.
Dependencies are inferred from the claim text.