seamless sportswear design and fabrication jin yun zhou,jimmy lam and yi li institute of texitile...
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Seamless Sportswear Design and Fabrication
Jin Yun Zhou,Jimmy Lam and YI LIInstitute of Texitile and Clothing,The Hong Kong Po
lytechnic University,Hung Hom,Hong kong15/08/2008
Seamless Sportswear Design and Fabrication
1. Introduction of seamless Knitting technology
2. Design in terms of color
3. Design in terms of functions
4. Stitch design
5. Application and examples of seamless sportswear
6. Future directions of seamless sportswear technology
1.Introduction of seamless Knitting technology
• Double needle bar warp knitting Front needle bar and needle bar knit the front and back panels respectively,
the middle jacquard bar connects them to form the seamless garment.
• Computerized flat knitting The yarn knits on front and back needle beds in turn to form tubular fabric.
The complete garment was formed by stitch move.
• Body size circular knitting The cylinder needles knit the tubular fabric. It could be formed garment by si
mple cut and sew.
RDPJ 6/2 Double needle bar raschel machine with piezo-jacquard system for the production of jacquard seamless garment
The complete garment knitted on computerized flat knitting machine
At the start the elements sleeve/body/sleeve are knitted next
to each other. A separate yarn carrier is required for each element.
After the body and sleeve elements are joined together, knitting is
continued with only one yarn carrier
Santoni SM8-top2s
Special features of SM8-top2• Electronic needle and yarn finger selec
tion• Digital control of yarn input tension• Digital stitch length control through gr
aphic design• Cylinder: 14 inch, machine gauge 28G
2.Design in terms of color
• Horizontal striper Horizontal striper effect can be achieved by changing yarn carries in sequence.
• Jacquard The same course is knitted by different yarns through needle selection. The
floating yarn on back side is shorted by tuck to form an even surface.
• Mock intarsia
The same course is also knitted by different yarns and the floating yarns on back side were cut by round knife
Design in terms of color
Horizontal striper effect can be achieved by changing yarn carries in sequence
Design in terms of color
The same course is knitted by different yarns through needle selection. The floating yarn on back side is shorted by tuck to form an even surface.
Design in terms of color
The same course is also knitted by different yarns and the floating yarns on back side were cut by round knife.
3. Design in terms of functions
Function design for seamless sportswear knitted on body size circular knitting machine
1. Moisture Management (sweat control)
2. Thermal management (heat dissipation)
3. Pressure management (muscle power)
Design in terms of functions
1. Moisture Management (sweat control) Moisture Management Fabric improves the sweat expelling effect. It c
an be designed and fabricated by the application of:
a. Functional yarn (combination and distribution of hydrophilic or hydrophobic fibers in fabric, capillary attraction benefited from special cross section) (coolmax, pp, tactel)
b. Fabric structure (plating for single jersey, sandwich structure for double jersey)
Design in terms of functions
2. Thermal management (heat dissipation)
Dynamic heat control by power net:
a. Elastic yarn or fiber (Lycra, XLA, PTT)
b. Mesh structure (mesh size and distribution)
Design in terms of functions
3. Pressure management (muscle power)
Fabric stretch properties design
a. Yarn (yarn elasticity)
b. Stitch structure (miss stitch distribution and density)
c. Knitting parameter (loop length, elastic yarn pre-elongation)
Stitch combination on SM8-top2s
1.Plain stitch + mesh 2. Plain stitch + tuck 3.Plain +mesh with two colors plating
4.Plain +tuck with two colors plating 5.Plain +miss +tuck 6.Sharp Pattern
5.Application and examples of seamless sportswear
• Color design (Logo)• Function design (moisture, thermal and pressure)
6.Future directions of seamless sportswear technology
• New material application and finishing. (staple yarn for warp knitting, functional fiber…)
• Novel knitting technique. (more flexible combinations of function design and color design, application of flat knitting technique in seamless sportswear design and fabrication)
• Equipment (Fine gauge for double jersey machine to expend the extent of function and color design compare to single jersey machine)