design Flashcards
printing definition
process of applying coloured patterns to the surface of fabrics by use of a print paste
printing principles
- print paste is applied to printing tool and pressed against surface of fabric
- each colour is printed separately so printed design is often repeated. aligning the print is known as registration
- printed fabric is then heat set through steaming or ironing. ensures that print paste penetrates the fibres
- fabric is then washed to get rid of excess dye and chemicals
printing advantage over dying
- greater variety of designs
- more colours
- more complicated designs
- more variety of methods
methods of printing
block, roller, screen, heat transfer, discharge, resist and digital direct
block printing
- hand process, so slow and expensive and irregularities can occur
- block or stamp made from carving into wood, foam or metal
- print paste applied
- block pressed down
roller printing
- allows for multicolour printing
- continuous mechanical process
- can produce large quantities of fabric
- roller engraved or etched with designs
- up to 16 colours
screen printing
- developed from stencilling
- carried out manually or mechanically
- screen of fine silk made for each colour of the design
- coated in a lacquer, to prevent printing paste getting through
- photographic plate for each colour is produced
- screen exposed to high intensity light
dyeing definition
process of applying a permanent colour to a fibre, yarn or fabric via immersion in a dye bath
principles of dyeing
- dissolve dyestuff in water = dye solution or dye liquor
- fibre yarn or fabric is then wetted out
- textile immersion in dye solution
- agitation used to assist dye uptake
- dye molecules migrate as dye liquor loses colour because the textile is becoming dyed
types of dye
- disperse (polyester or nylon)
- reactive (cellulosic)
- natural
occupation health and safety for printing and dyeing
rubber gloves, protective clothing, avoid inhaling vapours and dust, dispose of dyes carefully
principles of dyeing (3)
migration - dye molecules are attracted and move towards textile piece
diffusion - dye molecules diffuse into the fixation process
anchoring - dye molecule is anchored between the polymers of the fibre
pre 1900
women weren’t allowed to swim a man wanted to swim he would wear a one-piece wool flannel suit that covered them from neck to knee
1900-09
men and women swam in separate areas of the beach. women would wear bloomers with a wool overdress, stockings and lace up shoes (weights to stop dress from floating up in water). swimsuit challenged society’s concept of morality
1910-19
sunbathe instead of swim = more fitted swimsuits but still made of wool
1920-29
laws introduced stating what could be worn to the beach - skin tight tubular swimsuits made from wool jersey became the style (bared arms and backs)
1930-39
lifesavers bared their chests for the first time, designers took inso from movie stars = necklines lower, hemlines higher and cutout sections were popular
1940-49
bikini was patented, corsets or bra cups were built into swimsuits to create shape, zippers still used in the back of swimsuits
1950-59
new swimming pool culture developed - it was acceptable to sit and sunbaked but not get wet
1960-69
lycra and nylon were introduced - gave swimwear stretch and no longer needed zippers (elastic used around edges to keep them in place)
1970-79
Australia became leader in bikini designs
1980 onwards
acceptable to wear anything to beach
who are the Hmong people?
live in china, laos, burma, vietnam and thailand. six major groups named after their traditional clothing and headress