Terms in this set (57)
Most appropriate coloration method for polypropylene textiles
Advantages of mass pigmentation over yarn/piece dyeing
Disadvantages of mass pigmentation over yarn/piece dyeing
complexity of managing colored fibers (variety and time), machinery contamination, high price
Advantages of Skein Dyeing
achieve high bulk, good for carpet yarns and bulky hand knitting yarns
Advantages of Package Dyeing
savings in energy, water, and space; less labor handling, more production for a given machine size, readily automated process
Advantages of loose-stock dyeing over yarn dyeing
better colorfastness, unique heather dyeing style
Advantages and Disadvantages of Jig Dyeing
-advantages: good for crease sensitive fabric, efficient, cheap
-disadvantages: slow, levelness problems (streaks), high tension is the major disadvantage
Advantages and Disadvantages of thermosol/continuous dyeing
-advantages: ideal for long yardages of single colors (high production rates), well suited for processing P/C blends, excellent technology for work wear/industrial uniform fabrics (disperse/vat) (disperse/sulfur)
-disadvantages: long lengths of fabric must be dyed same shade, stretches fabric, long clean up times, stiffens fabric, have to have a large order
Advantages and disadvantages of beck dyeing
-advantages: best for weaker fabrics, gentle, higher productivity than jig and beam
-disadvantages: high energy and water costs, unlevel dyeing, not good for fabrics that are sensitive to crease and abrasion, high liquor ratio
Advantages and disadvantages of beam dyeing
-advantages: fabric doesn't move, no tension, great quality, good retention for quality of fabrics
-disadvantages: expensive, challenge for even dyeing
Advantages and disadvantages of jet dyeing
-advantages: decreased energy costs, wastewater volume, and chemical use; improved quality, good for high temperature dyeing (pressurized), high productivity
-disadvantages: foam, tangles, surface abrasion, crease/compaction
Advantages and disadvantages of pad batch dyeing
-advantages: simple mechanical requirement, low liquor ratio, low energy consumption, high dye fixation, quick response to color and fabric changes
-disadvantages: lower productivity, more labor requirement
Micro denier vs. denier fibers
micro denier fibers use lots of dye while denier fibers use much less dye
What class of fibers is sometimes colored by gel dyeing method?
Select the most appropriate dyeing process for the production of a 100% cotton heather yarn.
Loose stock dyeing
Bulky knitting yarns are usually dyed by what method?
Indigo dyeing for the making of blue jeans uses what dyeing method?
Continuous yarn dyeing
Advantages of jet dyeing over beck dyeing
decreased energy costs, lower liquor ratio, better quality, even dyeing results
Pad-batch dyeing is used for what dye class
Advantages of pad-batch dyeing
low liquor ratio, high dye fixation, saves energy
Advantages of continuous dyeing over batch dyeing
higher productivity (can color more fabric at once), less labor requirement, saves money, saves time (however wont save money on short yardages)
Advantages of garment dyeing over yarn, piece, or fabric dyeing
quick response to trends, more money
Main difference between a pigment and an acid dye
a pigment dye uses a binder because they don't have affinity to materials while an acid dye does not use a binder
common black and white pigments are made from what?
-black: carbon black
-white: TiO2 (titanium dioxide)
low production, broken yarns from needles
most productive method
fast, but low quality
good quality, but slow
in between roller and flat screen printing
can print on piled materials, cheap, quick process, good for sample production methods, but hard to have consistent colors
no pollution in textile mills, easy operation, quick response, but low dye exhaustion (usually around 90%), lots of dye wasted, low color transfer
Pigment vs. Dye colorations
-Pigment: no limitations on fabrics, can use on blended materials, better colorfastness, stiffer hand (pad, dry, cure= simple procedure)
-Dyes: long and difficult procedures, better abrasion resistance, softer hand
Materials/Chemicals and procedures involved in pigment colorations and their functions
-materials: binder (purpose is to improve color fastness)
-chemicals: composed of hydrogen, phosphorus, carbon, nitrogen, oxygen (organic); also based on azo and anthraquinone chromagen
Effect of pigment particle size on properties of printed goods
-too small: loss of covering power and color intensity
-too large: dull and gray color
Space dyeing definition, different methods, and characteristics
-yarn printing, random coloration, different shades or shade of depths in different spaces along the threadline
-yarn --> warp, skein, package; fabric--> KDK and TDT
Advantages of KDK over skein/package space dyeing
more productivity, high bulk
Disadvantages of astro-dyeing process
low production and broken yarns from needles
3 major components in a pigment printing paste and their functions
colorants/pigments, thickeners, binder (normal dyes= dyes and thickener)
Purpose of steaming in textile printing
moisture and thermal energy (dyes are on surface, steaming helps them penetrate into fibers and get fixed into fibers)
Printing speeds for different printing technologies
roller printing= fastest, rotary= middle speed, flat= slowest
Right order of different layers of fabrics used in printing and their functions
-inner layer: roller/endless printing blanket
-middle layer: back gray fabric- used to protect dyes going onto wool layer
-outer layer: fabric you want to print
Vapor transfer printing is suitable for what dye classes and fabrics
Disperse dyes (good for polyester and sometimes acetate fabrics)
What dyeing method is good for stretch sensitive fabrics?
Beam or jet
What dyeing method for knit fabric (stretch sensitive) that is difficult to be dyed evenly?
If I dye 2 fabrics (one large denier and one small) separately to same depth of shade which dye bath requires more dye stuffs?
Fabric made from smaller denier fibers
Vapor transfer printing advantages
dry process therefor we don't have to wet and dry fabric which saves energy
What is a good binder for pigment coloration?
good water stability (wont swell or dissolve in water), resistant to chlorine (so you can use chlorine bleach), wont be affected by light, wont stiffen fabric too much
What is space dyeing?
What is KDK?
What is TDT?
Space dyed yarns are popular for auto interiors why?
good stain hiding ability (so many different colors so it hides stain better than solid color materials)
When fabric moves fast the disadvantage is that it creates high tension which creates what?
velvet and velveteen are both what/
Pad batch dyeing is used for what?
Which printing method produces the stiffest fabrics?
roller because it has the highest speed