Patent classifications
D04H5/06
METHODS OF MAKING COMPOSITE NONWOVEN WEBS
Disclosed herein are improvements to processes and equipment for the manufacture of composite nonwoven webs comprising a mixture of two or more different fibers and formed from at least two streams of air-entrained fibers. Adjacent the perimeter of an exit port of one of the fiber streams are located a series of spaced tabs and apertures. As a first stream of air-entrained fibers pass the series of tabs and apertures, vortices are formed therein. When mixed with a second stream of air-entrained fibers, the vortices within the first stream of fibers causes increased mixing of the fibers, helping to drive the first fibers deeper into the second stream of air-entrained fibers.
Nonwoven fabric structure and method for producing the same
Provided is a nonwoven fabric structure containing an odd-shaped fiber. The odd-shaped fiber has bubbles inside and has a cross-sectional shape that is an irregular, non-circular cross-section. Further, it is preferable that the cross-sectional shape of the odd-shaped fiber changes in the fiber length direction, the odd-shaped fiber has a crystallinity of 40% or less, and the odd-shaped fiber is made of at least two kinds of thermoplastic resins. It is also preferable that that the nonwoven fabric structure contains a heat fusible fiber, the odd-shaped fiber is present in the form of a net-like fiber sheet, and the odd-shaped fiber is in the form of short fibers. In addition, a method for producing such a nonwoven fabric structure is a method in which a thermoplastic resin containing a foaming agent is extruded through a slit die to give an odd-shaped fiber having bubbles inside, followed by three-dimensional shaping.
Nonwoven fabric structure and method for producing the same
Provided is a nonwoven fabric structure containing an odd-shaped fiber. The odd-shaped fiber has bubbles inside and has a cross-sectional shape that is an irregular, non-circular cross-section. Further, it is preferable that the cross-sectional shape of the odd-shaped fiber changes in the fiber length direction, the odd-shaped fiber has a crystallinity of 40% or less, and the odd-shaped fiber is made of at least two kinds of thermoplastic resins. It is also preferable that that the nonwoven fabric structure contains a heat fusible fiber, the odd-shaped fiber is present in the form of a net-like fiber sheet, and the odd-shaped fiber is in the form of short fibers. In addition, a method for producing such a nonwoven fabric structure is a method in which a thermoplastic resin containing a foaming agent is extruded through a slit die to give an odd-shaped fiber having bubbles inside, followed by three-dimensional shaping.
Absorbent laminated material
Absorbent laminated materials that include two spunbond nonwoven layers with a cellulose layer arranged in between the spunbond nonwoven layers are disclosed. The different layers of the absorbent laminated material are bonded through an ultrasonic treatment, and can further undergo an embossing step. In addition, the absorbent laminated materials may be used as disposable wiping products, among other applications.
Absorbent laminated material
Absorbent laminated materials that include two spunbond nonwoven layers with a cellulose layer arranged in between the spunbond nonwoven layers are disclosed. The different layers of the absorbent laminated material are bonded through an ultrasonic treatment, and can further undergo an embossing step. In addition, the absorbent laminated materials may be used as disposable wiping products, among other applications.
Method for manufacturing an integrally formed cap and a cap manufactured by the method
A method is providing for manufacturing an integrally formed cap, the method comprising: in step 1, providing a shell fabric B and a thermoplastic lining fabric C, superposing the shell fabric on a surface of the lining fabric and tightly attaching the shell fabric to the lining fabric, to obtain the fabric A needed, and providing the shaping mold matched with the shape of a cap; in step 2, cutting the fabric A obtained in Step 1 into set dimensions; and in step 3, tightly attaching the fabric A cut in Step 2 onto the shaping mold obtained in Step 1, thermally shaping the fabric A by a container, so as to integrally shape the fabric A into the cap. With the method of the invention, the production speed and quality stability can be increased, the production cost reduced, and the production process is energy-saving and environment-friendly.
Thermally stable nonwoven web comprising meltblown blended-polymer fibers
A thermally stable nonwoven web including blended-polymer meltblown fibers containing a blend of poly (butylene terephthalate) and poly (ethylene terephthalate).
Thermally stable nonwoven web comprising meltblown blended-polymer fibers
A thermally stable nonwoven web including blended-polymer meltblown fibers containing a blend of poly (butylene terephthalate) and poly (ethylene terephthalate).
Nonwoven fabric web
A nonwoven fabric web having an excellent sound absorption coefficient in a frequency range from 800 Hz to 1000 Hz when used as a sound absorbing member for a vehicle exterior. The nonwoven fabric web including a nonwoven fabric having meltblown fibers and binder fibers arranged so as to be confounded with the meltblown fibers and fused with the meltblown fibers at some of the confounding points at the very least, the weight per unit area of the nonwoven fabric being from 400 g/m.sup.2 to 1500 g/m.sup.2, and the flexural rigidity of the nonwoven fabric being from 2.0 N/50 mm to 20.0 N/50 mm.
Nonwoven fabric web
A nonwoven fabric web having an excellent sound absorption coefficient in a frequency range from 800 Hz to 1000 Hz when used as a sound absorbing member for a vehicle exterior. The nonwoven fabric web including a nonwoven fabric having meltblown fibers and binder fibers arranged so as to be confounded with the meltblown fibers and fused with the meltblown fibers at some of the confounding points at the very least, the weight per unit area of the nonwoven fabric being from 400 g/m.sup.2 to 1500 g/m.sup.2, and the flexural rigidity of the nonwoven fabric being from 2.0 N/50 mm to 20.0 N/50 mm.