Nonwoven web laminate having relatively hydrophilic zone and related method for its manufacture
AssigneeBBA Nonwovens Simpsonville, Inc.
InventorsJuris Jankevics, Glenn Roberts
Life of this patent
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AssigneeBBA Nonwovens Simpsonville, Inc.
InventorsJuris Jankevics, Glenn Roberts
Estimating the term…
A zone-treated spunbonded/meltblown/spunbonded (SMS) fabric laminate that combines the separate functions of the topsheet and cuff in one component of an absorbent article. The SMS fabric laminate is treated with surfactant to form a hydrophilic zone. The untreated areas of the SMS fabric laminate remain hydrophobic and perform the function of the cuff. Alternatively, a spunbonded/spunbonded fabric laminate is formed and then zone-treated with surfactant. The fabric laminate is treated with surfactant on both sides using a foam applicator. The application of foam produces sharp transitions between the hydrophilic and hydrophobic zones. After foam application, the fabric laminate is dried and slitted. The treated and slitted material is then wound and sold in roll form for converting into the finished disposable diaper.
A fiber laminate comprising a layer of melt-blown fibers sandwiched between first and second layers of spunbonded fibers, said layer of meltblown fibers and said first and second layers of spunbonded fibers each being treated with surfactant over a first region of said fiber laminate and being not treated with said surfactant over a second region of said fiber laminate.
A fiber laminate comprising a first layer of spunbonded fibers bonded to a second layer of spunbonded fibers, each of said first and second layers of spunbonded fibers being treated with surfactant over a first region of said fiber laminate and being not treated with said surfactant over a second region of said fiber laminate.
A method of manufacturing a spunbonded/melt-blown/spunbonded fiber laminate, comprising the steps of:
A method of manufacturing a spunbonded/spunbonded fiber laminate, comprising the steps of:
A method of manufacturing a nonwoven fiber laminate, comprising the steps of:
A method of manufacturing a nonwoven fiber laminate, comprising the steps of:
A fiber laminate comprising a first nonwoven layer of fibers bonded to a second nonwoven layer of fibers, said first and second nonwoven layers of fibers each being treated with surfactant over first and second regions of said fiber laminate and being not treated with said surfactant over a third region of said fiber laminate lying between said first and second regions, said first and second regions extending in parallel in a machine direction, said first region having a substantially constant first dimension in a cross direction perpendicular to said machine direction, and said second region having a substantially constant second dimension in said cross direction.
Dependencies are inferred from the claim text.