US 7,320,581 B2
Stabilized filament drawing device for a meltspinning apparatus
Martin A. Allen, Dawsonville, Ga. (US); Patrick L. Crane, Dawsonville, Ga. (US); Steven Clark, Cumming, Ga. (US); and Matthew Thompson, Cumming, Ga. (US)
Assigned to Aktiengesellschaft Adolph Saurer, (Switzerland)
Filed on Nov. 17, 2003, as Appl. No. 10/714,778.
Prior Publication US 2005/0104261 A1, May 19, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. B28B 5/00 (2006.01)
U.S. Cl. 425—72.2  [264/211.14] 31 Claims
OG exemplary drawing
 
1. A drawing device for attenuating a plurality of filaments received from a spin pack of a meltspinning apparatus, said drawing device comprising:
a manifold including an inlet receiving the plurality of filaments from the spin pack, an outlet oriented in a cross-machine direction, and a passageway extending between said inlet and said outlet, said manifold having a slotted channel communicating with said passageway for discharging air in said passageway to impinge the filaments in said passageway, and said manifold discharging the filaments and the flow of air from said outlet in a downward direction perpendicular to said cross-machine direction;
a first plurality of guides positioned proximate to said outlet and aligned in a first row oriented in the cross-machine direction, each of said first plurality of guides inclined at a first angle relative to said downward direction, wherein each of said first plurality of guides has first and second side edges, a first surface extending between the first and second side edges parallel with the cross-machine direction, and second and third surfaces extending from the first and second side edges perpendicular to the cross-machine direction; and
a second plurality of guides positioned proximate to the outlet of the filament drawing device and aligned in a second row oriented in the cross-machine direction, each of said second plurality of guides positioned between an adjacent pair of said first plurality of guides, and each of said second plurality of guides inclined at a second angle relative to said downward direction, wherein each of said second plurality of guides has third and fourth side edges and a fourth surface extending between the third and fourth side edges parallel with the cross-machine direction, and the second and third surfaces of each of said first plurality of guides extend to the third and fourth edges of each of said second plurality of guides,
wherein said first plurality of guides and said second plurality of guides are configured to cause the flow of air and the filaments to deviate from said downward direction.