What is a Canvas Fabric?
Canvas is a plain weave fabric formed from cotton, linen, jute, cotton, hemp, or – today, when canvas has become a generic term for heavy, tightly-woven fabric - polyester. Canvas is heavy and dense and has applications in making tents, sails, tarpaulins, awnings, upholstery, umbrellas, shoe uppers, embossed wall coverings that form a substratum for paint or gilding, and totes. Additionally, canvas serves as a support for oil painting, and is the name for the mesh fabric on which embroidery and needlepoint are done. A “canvas” paper for inkjet printing has even been developed.
Canvas Fabric. Canvas is used in applications in which a thick, tough, durable fabric is required. Duck, from the Dutch word
doek, which originally referred to a particular type of linen canvas used for garments for sailors - for instance, their white trousers - is now used for a selection of canvas, including army duck, awning duck, belting duck, boat duck, flat duck, hose duck, linen duck, number duck, ounce duck, sail duck, shoe duck, tent duck, and
others
.
Processing of Technical Textiles:
The heavily constructed fabrics that are
normally used as a canvas material for awnings and tents would have invariably
10ozs/sq.yard to 20 ozs/sq.yard. These fabrics are very to handle processing in
regular machineries. Since these materials are very heavy, normally a length
more than 100 meters from loom state is not possible to produce.
Mostly 100% cotton fabric is preferred in the
market. But owing to the cost factor of cotton, PE, Acrylic, Jute, linen and
hemp are some of the material blends are now available in the market.
From (shirt) collar lining, tents, awnings,
military jeep tops etc., canvas materials are used in artistic drawing purpose
too.
General Finishes of Canvas:
Due to its heavy nature, mostly canvas is used
for rough and rugged purposes only. It would be exposed mostly to sun, rain and to
all seasonal and climatic conditions. So the purpose of canvas is to protect
valuable men, machine and properties from the impact of nature.
It is obvious that the required finishes on
canvas fabric would be water proof ( resists water to penetrate), water
repellant ( throw away water droplets and behaves like hydrophobic
materials), fire proof (resists fire to spread), moth and rot proof (
withstand the action of microbes and moths).
Machineries for canvas processing:
CBR or CDR (Continuous Bleaching Ranges or
Continuous Dyeing Ranges) could not be employed for processing due to practical
reasons in handling. So, right from scouring and bleaching to dyeing and
finishing would be carried out in heavy duty jumbo jiggers.
Drying of the processed fabric would be carried
out mostly in Cylinder Drying Machines and heavy duty pin stenters.
Process Sequences:
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