1. A nonwoven fabric production method for cleaning, comprising:
a raw material supply step for inputting 80-90 weight % of a cotton plug and 10-20 weight % of a synthetic fiber;
a step for mixing the inputted raw materials using a scutching machine;
a step for producing a sheet-shaped web by processing the mixed raw materials using a carding machine;
a step for producing a fiber web in such a way to stack a plurality of the webs and to spray a water jet and to bind a plurality of the webs; and
a step for heat-drying the fiber webs and smoothing the synthetic fibers and enhancing a binding with the cotton plug.
2. The method of claim 1, wherein the synthetic fiber is a poly olefin-based fiber or a polyester fiber having a melting point of 100-120\xb0 C.
3. The method of claim 1, wherein the raw material supply step has features in that the cotton fiber and the synthetic fiber are alternately stacked and form at least three stages and then are supplied.
4. The method of claim 1, wherein the heat treatment step has features in that the fiber web is processed for 80-100\xb0 C. for 50-120 seconds by a heat-wind device andor a heating roll.
5. A nonwoven fabric for cleaning which is manufactured by a production method defined in claim 1.
6. A nonwoven fabric for cleaning which is manufactured by a production method defined in claim 4.
7. The method of claim 2, wherein the heat treatment step has features in that the fiber web is processed for 80-100\xb0 C. for 50-120 seconds by a heat-wind device andor a heating roll.
8. The method of claim 3, wherein the heat treatment step has features in that the fiber web is processed for 80-100\xb0 C. for 50-120 seconds by a heat-wind device andor a heating roll.
9. A nonwoven fabric for cleaning which is manufactured by a production method defined in claim 2.
10. A nonwoven fabric for cleaning which is manufactured by a production method defined in claim 3.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A pneumatic tire having a radial carcass made from a sulfur-crosslinked rubber mixture which comprises:
from 70 to 100 phr (parts by weight, based on 100 parts by weight of all of the rubbers in the mixture) of natural rubber;
from 0 to 30 phr of at least one polybutadiene;
from 0 to 15 phr of at least one carbon black;
from 20 to 100 phr of at least one silica;
at least one silane coupling agent; and,
an adhesive system,
wherein the rubber mixture is a carcass rubber mixture and the silica has a CTAB number above 100 m2g in accordance with ASTM D3765; and,
wherein the rubber mixture comprises less than 15 phr of processing aid.
2. The pneumatic tire as claimed in claim 1, wherein the at least one polybutadiene is selected from the group consisting of a polybutadiene having more than 95% by weight cis content and a functionalized Li-polybutadiene.
3. The pneumatic tire as claimed in claim 1, wherein the rubber mixture comprises from 40 to 80 phr of the at least one silica.
4. The pneumatic tire as claimed in claim 1, wherein the at least one silica has a CTAB number above 130 m2g in accordance with ASTM D3765.
5. The pneumatic tire as claimed in claim 1, wherein the at least one silica is a high-dispersibility silica.
6. The pneumatic tire as claimed in claim 1, wherein the radial carcass comprises metallic reinforcement.
7. The pneumatic tire as claimed in claim 6, wherein the adhesive system is a steel cord adhesive system comprising an organic cobalt salt, a reinforcing resin, and more than 2.5 phr of sulfur.
8. The pneumatic tire as claimed in claim 1, wherein the pneumatic tire is a commercial-vehicle tire.