Knitwear with a perforated structure and method for producing said knitwear
A method for producing knitwear formed at least partially as single jersey knitwear with a perforated structure and a functional textile based on the knitwear, provide very fine knitting stitches and perforated structures with large holes meeting demands of sportswear and underwear. The knitwear is produced on a double jersey knitting machine with first and second oppositely disposed needle carriers and a machine gauge of >24 needles/inch. The first needle carrier has a needle number/inch of latch-type needles corresponding to the machine gauge and the second needle carrier has transfer needles. The needle number/inch of the transfer needles is at most half that of the latch-type needles of the first needle carrier. The transfer needles form loop accumulations with at least one tuck loop per hole subsequently transferred with or without at least one knitting stitch from the transfer needles onto the latch-type needles.
1. A method for producing a knitwear formed at least partially as single jersey knitwear with a perforated structure having holes, the method comprising the following steps:
producing the knitwear on a double jersey knitting machine with first and second needle carriers and a machine fineness of ≧24 needles/inch;
placing the first needle carrier opposite the second needle carrier;
providing the first needle carrier with a needle number/inch of latch needles corresponding to the machine fineness;
providing the second needle carrier with transfer needles having a needle number/inch being smaller at least by a factor of 2 than the needle number/inch of the latch needles of the first needle carrier;
forming loop accumulations of at least two tuck loops per hole using the transfer needles; and
subsequently transferring the tuck loops from the transfer needles onto the latch needles with or without at least one stitch.
2. The method according to claim 1 , wherein the transfer needles are transfer needles corresponding to a needle carrier fineness of ≧18 needles/inch.
3. The method according to claim 1 , wherein the double jersey knitting machine is a double jersey circular knitting machine.
4. The method according to claim 3 , wherein the double jersey circular knitting machine has a rib dial on which the latch needles are provided and a cylinder on which the transfer needles are provided.
5. The method according to claim 3 , wherein the transfer needles are cylinder needles selected by a mechanical or electronic selection device.
6. The method according to claim 1 , which further comprises forming knops projecting out of a face of the knitwear using the loop accumulations.
7. The method according to claim 1 , which further comprises working at least one weft thread into the knitwear.
8. The method according to claim 6 , which further comprises forming at least one of sizes or spacings of at least one of the holes of the perforated structure or the knops as a function of requirements of the knitwear with regard to at least one of its capacity for an exchange of at least one of gas, heat or water vapor or its elasticity.
9. The method according to claim 1 , which further comprises knitting with the double jersey knitting machine using at least two systems with a following transfer system.
10. The method according to claim 1 , wherein the needle number/inch of the transfer needles is smaller by a factor of 3 or 4 than the needle number/inch of the latch needles of the first needle carrier.
11. A functional textile, comprising:
a knitwear constructed at least partially as a single jersey knitwear with a perforated structure having holes and being produced by knitting on a double jersey knitting machine with first and second mutually opposite needle carriers and a machine fineness of ≧24 needles/inch, the first needle carrier having a needle number/inch of latch needles corresponding to the machine fineness, the second needle carrier having transfer needles, and the needle number/inch of the transfer needles being smaller by at least a factor of 2 than the needle number/inch of the latch needles of the first needle carrier; and
said perforated structure being formed from loop accumulations generated by the transfer needles and having at least two tuck loops per hole being transferred from the transfer needles onto the latch needles with or without at least one stitch.
12. The functional textile according to claim 11 , wherein said perforated structure is configured to locally increase a vapor permeability of the functional textile.
13. The functional textile according to claim 11 , which further comprises:
a face of said knitwear;
a right fabric side and a left fabric side of the functional textile;
said perforated structure disposed at least on said right fabric side of the functional textile; and
knops formed by using said loop accumulations and projecting out of said face of said knitwear on said left fabric side of the functional textile.
14. The functional textile according to claim 11 , which further comprises at least one weft thread worked into said knitwear.
15. The functional textile according to claim 13 , wherein at least one of sizes or spacings of at least one of said holes of said perforated structure or of said knops are formed as a function of local requirements of the functional textile with regard to at least one of its capacity for an exchange of at least one of gas, heat or water vapor or its elasticity.