摘要:
Cooling systems and the methods of cooling filaments using the cooling systems are disclosed. One embodiment of the cooling system includes a layer of nozzles (130) that spray air on the filaments (30) above a pre-pad water spray. Alternatively, another cooling system utilizes air-atomizing nozzles to spray a mixture of air and water on the filaments. The cooling systems provide an improved distribution of cooling fluid particulars to enhance the cooling of the filaments. The sprays from the nozzles have a higher momentum and are able to penetrate deeper into a filament fan than conventional cooling systems. The results are an improved temperature uniformity among the filaments and an overall reduction in temperature of the filaments prior to the application of size material.
摘要:
A paving mat (14) for use in a paved surface (10) includes a fibrous mat in the form of a paving mat. The fibrous mat includes a fibrous matrix containing a mixture of polymer fibers, first mineral fibers having a first median length, and second mineral fibers having a second median length that is different from the first median length. In another embodiment, the paving mat includes a fibrous mat including a fibrous matrix which is bonded together by a binder. In one embodiment, the binder is a mixture of different binders. The fibrous matrix includes a mixture of mineral fibers in an amount within a range of from 61 wt% to 85 wt% and polymer fibers in an amount within a range of from 15 wt% to 39 wt%. The polymer fibers have a melting point greater than 320°F (160°C). The mat has a stiffness in the machine direction within a range of from 65 g-cm to HO g- cm. The mat has a load-elongation behavior such that when the mat is subject to tensile stress, the mat achieves at least 90% of its ultimate load at an elongation not greater than 5% of the specimen length in the direction of applied stress. Another embodiment of the paving mat is made with a carboxy-modified acrylic binder.