TH43402A - A process for the continuous extruding of the extruded substance. - Google Patents

Abstract

DC60 (19/05/43) The process for extrusion and absorption of the extruded material with a truly continuous flow outline onto the substrate involves dividing the extruded fluid into several separate streams separated by equal distances across the width of the substrate, and then widening these separated streams of extruded fluid in the width direction and, ideally, connecting them before absorption onto the substrate. The extruder has an inlet and outlet and is incorporated in a superior manner with a cavity and removable shims. These elongated channels are sized to fit into the cavity of the cavity in a closed assembly relationship. Thus, these elongated channels form several flow channels created to facilitate the passage of the separated streams of extruded fluid from the inlet to the outlet. The elongated channels of the shims are widened at the outlet to facilitate the widening of the separated streams of extruded fluid. Ideally, the shims are recessed relative to the outlet. The process for extrusion and ejecting the extruded material with a truly continuous flow profile onto the substrate involves dividing the extruded fluid into several separate streams, separated by equal distances across the width of the substrate, and then widening these separate streams of extruded fluid in the width direction and, ideally, connecting them before being submerged onto the substrate. The extruder has an inlet and outlet and is incorporated in a superior manner with a cavity and removable shims. These shims have several elongated channels sized to fit into the cavity of the cavity in a closed assembly relationship. Thus, these elongated channels form several flow channels created to guide the separate streams of extruded fluid from the inlet to the outlet. The elongated channels of the shims are widened at the outlet to facilitate the widening of the separate streams of extruded fluid. Ideally, the shims are recessed relative to the outlet.

Claims (20)

1. The process for extruding extrudible fluid onto a substrate consists of: (a) preparation of the substrate; (b) preparation of the extrudible fluid source; (c) preparation of at least one first edge, the first edge width and the first edge width are created to accommodate the extrudible fluid; (d) preparation of a number of flow channels extending from the extrudible fluid source towards the first edge, each flow channel created to allow for the movement of divergent streams of extrudible fluid from the extrudible fluid source towards the first edge; each flow channel has a discharge end connected to the first edge, the discharge ends are separated by equal distances predetermined along the first edge, and at least some flow channels are widened at the discharge ends; (e) the continuous, relative and close movement of the substrate from edge to edge; (f) the movement of divergent streams of extrudible fluid within the flow channels and discharge. At least at the first edge, thus forming the extruded substance (g) bringing the extruded substance into contact with the substrate. 2. The process according to claim 1, where step (c) is then incorporated by the arrangement of a second edge opposite the first edge, where the second edge has a second border, in which step (d) the discharge end of the flow channel is arranged between the first and second edges. 3. The process under claim 2, where step (d) the discharge end of the flow channel is made into a niche relative to at least one of the first and second edges. 4. The process according to claim 3, where step (f) is further comprised of the widening of the extruded fluid stream in the transverse direction. 5. The process according to claim 4 in which step (d) the discharge ends of at least some of the flow channels are closely separated from each other, so in step (f) at least some partially separated streams of the extruded fluid, after being discharged onto at least one edge, will form a truly continuous outline of the extruded substance along at least one edge. 6. The process under claim 5, where step (f) in addition is comprised of making at least some of the extruded fluid separate streams, subsequently discharged from the flow channel onto at least one edge. 7. The process according to claim 6, where at least some of the terminal outlets of the flow channels are separated by exactly equal distances. 8. The process according to claim 7 in which step (f) the extruded substance has a truly uniform flow outline, at least partially along the width of the first edge. 9. The process pursuant to claim 5, where the extruded substance has an average flow rate of less than 1000 ml/min per inch of the first edge width. 10. The process under claim 9, where the extruded substance has an average flow rate from approximately 0.1 ml/min/inch to approximately 100 ml/min/inch of the first edge width. 11. The process stipulated in Claim 10, where the extruded substance has an average flow rate of approximately 1 ml/min/inch to approximately 10 ml/min/inch across the width of the first edge. 12. The procedure under claim 2, where the first and second margins are relative to each other. 13. The process under claim 12, which in addition includes the procedure of adjusting the distance between the first and second edges by moving the first and second edges by at least one relative part. 14. The process under claim 1 in which step (a) the substrate is composed of a fibrous membrane. 15. The process under claim 1 in which step (b) of the extruded fluid is selected from a group of active additives. 16. The process under Claim 1 in which the movement of an extruded fluid within a flow channel is induced by pressure applied to the extruded fluid. 17. The process under claim 1 in which step (c) the extruder is assembled with a cavity containing at least one shim with a number of longitudinal channels and is formed to fit into the cavity of the cavity in a closed assembly relationship, in which the shim is fixed within the cavity, so that a number of longitudinal channels of the shim form a number of flow channels. 18. The process for the formation of a truly continuous structure of the extrudible fluid consists of (a) the preparation of the extrudible fluid and (b) the preparation of the extruder, which consists of a chamber with separate front and rear cross-sections connected to the front cross-section. The chamber has an inlet and an outlet. The inlet has a distribution channel for receiving the extrudible fluid, and the outlet has a front and rear edge opposite the front edge. The front edge has a front border, and the rear edge has a rear border, which the front and rear edges define the outlet channel boundaries between them for the discharge of the extrudible fluid. The outlet has an outlet width and at least one replaceable shim with a number of longitudinal slots. Each longitudinal slot has an open discharge end. The shim is inserted between the front and rear cross-sections of the chamber in a closed assembly relationship, thus the discharge end of the slot (c) Delivery of extruded fluid into the distribution channel of the chamber section; (d) Movement of extruded fluid within the flow channel. The outlet end of the long channel is segmented relative to at least one of the front and rear edges and separated by equal distances along at least one of the front and rear edges. Thus, as the segmented streams of extruded fluid move out of the flow channel through the outlet end, at least some adjacent segmented streams of extruded fluid are connected, thus providing a true continuous outline of the extruded fluid across the width of the outlet channel. 19. The process pursuant to claim 18, in which step (b) at least a certain number of long channels of replaceable shims are made wide open at the discharge end to facilitate the widening of the split flow of the extruded fluid. 20. The process for adsorbing an extruded substance with a truly continuous width-bound outline onto a substrate consists of: (a) the preparation of a continuously moving width-bound substrate; (b) the preparation of the extrudable fluid; (c) the division of the extrudable fluid into segmented streams and the transfer of each segmented stream of the extrudable fluid to the vicinity of the substrate, thus the segmented streams of the extrudable fluid are separated by equal distances along the width of the substrate; (d) the widening of the segmented streams of the extrudable fluid along the width-bound direction in the vicinity of the substrate, thus at least some of the segmented streams of the extrudable fluid are interconnected, thus forming a truly continuous width-bound outline of the extruded substance composed of the extrudable fluid; and (e) the contact of the extruded substance with the substrate.