One step, ready-to-tuft, mock space-dyed multifilament yarn

• US 5,804,115 A
• Filed: 12/13/1996
• Issued: 09/08/1998
• Est. Priority Date: 12/13/1996
• Status: Expired due to Fees

• Current Assignee: Honeywell International Inc.
• Original Assignee: BASF Corporation (BASF SE)
• Inventors: Blackwell, Robert H., Burton, Wendel L.
• Primary Examiner(s): Tentoni, Leo B.
• Application Number:
  US08/766,724
• Time in Patent Office: 634 Days
• Field of Search: 264/103, 264/171.13, 264/210.8, 264/211.12, 28/220, 28/221, 28/245, 28/247, 28/263, 28/271
• US Class Current: 264/103
• CPC Class Codes: D02G 1/165 characterised by the use of certain filaments or yarns
• CPC Class Codes: D02G 1/168 including drawing or stretching on the same machine
• CPC Class Codes: D02G 1/20 Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
• CPC Class Codes: D02G 3/346 with coloured effects, i.e. by differential dyeing process
• CPC Class Codes: D02G 3/445 Yarns or threads for use in floor fabrics floor fabrics A47G27/00; floor coverings on textile basis D06N7/0005

Abstract

A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn is a one-step process. It joins extruding, texturing, and interlacing to yield a yarn that may be tufted directly into carpet without further texturing or twisting. In another aspect, one or more additional strands may be inserted in the process. An apparatus for making the ready-to-tuft, mock space-dyed, bulked continuous filament yarn is described.

Claims

1. A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn comprising the sequential steps of:

(a) extruding two or more strands having two or more colors in separated color blocks or combined color groupings such that the color of each strand is different than the color of at least one other strand;

(b) combining said strands to create at least two fractions from said two or more strands;

(c) independently texturing at least one fraction;

(d) combining the fractions in an interlacer to yield a yarn suitable for tufting directly into carpet without further texturing or twisting; and

(e) winding said yarn after said combining step (d).

2. The process of claim 1 further comprising the step of:

(f) independently interlacing at least one fraction between said texturing and said combining step (d).

3. The process of claim 1 wherein said winding is at a speed of about 1000 to about 3400 meters per minute.

4. The process of claim 1 wherein said extruding is of three or more differently colored strands.

5. The process of claim 1 wherein said texturing is accomplished independently with at least two bulking jets operated in parallel and at least two of said fractions are guided separately to a respective bulking jet.

6. The process of claim 2 wherein said independently texturing is of less than all fractions.

7. The process of claim 2 wherein said winding is at a speed of about 1000 to about 3400 meters per minute.

8. The process of claim 2 wherein said extruding is of three or more differently colored strands.

9. The process of claim 2 wherein said texturing is accomplished independently with at least two bulking jets operated in parallel and at least two of said fractions are guided separately to a respective bulking jet.

10. A process for making ready-to-tuft, mock space-dyed bulked continuous filament yarn comprising the steps of:

(a) extruding one or more strands having one or more colors;

(b) drawing one or more strands;

(c) inserting one or more additional strands so that there is a total of at least two strands and the color of each strand is different than the color of at least one other strand;

(d) combining strands to create at least two fractions from the total;

(e) independently texturing at least one fraction;

(f) combining the fractions in an interlacer to yield a yarn suitable for tufting directly into carpet without further texturing or twisting; and

(g) winding said yarn after said combining step (f).

11. The process of claim 10 wherein said inserting is of a strand comprised of undrawn filaments and occurs before said drawing.

12. The process of claim 10 wherein said inserting is of a strand comprised of undrawn filaments and occurs after said drawing.

13. The process of claim 10 wherein said inserting is of a strand comprised of drawn filaments and occurs before said texturing.

14. The process of before claim 10 wherein said inserting is of a strand comprised of drawn filaments and occurs after said texturing.

15. The process of claim 13 wherein said drawn filaments are combined into a fraction with at least one of the strands from said extruding.

16. The process of claim 10 where said inserting occurs after said texturing and before said combining step (f).

17. The process of claim 10 wherein said winding is at a speed of about 1000 to about 3400 meters per minute.

18. The process of claim 10 wherein said texturing is accomplished independently with at least two bulking jets operated in parallel and at least two of said fractions are guided separately to a respective bulking jet.

19. The process of claim 10 further comprising the step of:

(h) independently interlacing at least one fraction between said texturing and said combining step (f).

20. The process of claim 19 wherein said inserting occurs after said texturing and prior to said independent interlacing step (h).