Method and apparatus for making an absorbent composite
View Patent ↗A method and apparatus for making an absorbent composite from continuous tow is disclosed. The method and apparatus includes the steps of or means for spreading a crimped tow; de-registering the crimped tow; shaping the de-registered tow to a substantially rectangular cross-section; and distributing a particulate onto the shaped tow. The line speed of the particulate laden, shaped tow is greater than 190 m/min.
1. A method for making an absorbent composite from a continuous tow comprising the steps of:
spreading a crimped tow in a direction perpendicular to the tow's travel;
de-registering the crimped tow;
shaping the de-registered tow; and
distributing a particulate onto the shaped tow,
wherein a line speed of the particulate laden, shaped tow being greater than 190 m/min
thereby forming an absorbent composite adapted for use in a disposable absorbent garment.
2. The method of claim 1 , wherein the line speed being greater than 225 m/min.
3. The method of claim 1 further comprising shaping the de-registered tow to a substantially rectangular cross-section.
4. The method of claim 1 , further comprising applying a liquid to the tow.
5. The method of claim 1
wherein a ratio of tow line speed exiting from de-registration to tow line speed of particulate laden, shaped tow being in the range of 1.8 to 3.0.
6. The method of claim 5 wherein the ratio being 2.4.
7. An apparatus for making an absorbent composite from a continuous tow comprising:
means for spreading a crimped tow in a direction perpendicular to the tow's travel;
means for de-registering the crimped tow;
means for shaping the de-registered tow; and
means for distributing a particulate onto the shaped tow,
wherein a line speed of the particulate laden, shaped tow being greater than 190 m/min
thereby forming a means for making an absorbent composite adapted for use in a disposable absorbent garment.
8. The apparatus of claim 7 wherein the line speed being greater than 225 m/min.
9. The apparatus of claim 7 further comprising means for shaping the de-registered tow to a substantially rectangular cross-section.
10. The apparatus of claim 7 further comprising means for applying a liquid to the tow.
11. The apparatus of claim 7
wherein a ratio of tow line speed exiting from de-registration to tow line speed of particulate laden, shaped tow being in the range of 1.8 to 3.0.
12. The apparatus of claim 11 wherein the ratio being 2.4.