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TCF > Fibers > Flashcards

Fibers Flashcards

1
Q

What are textiles?

A

fibers and yarns used in making fabrics.

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2
Q

Name some types of fabrics?

A

knits, felts, laces, braids and nets

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3
Q

What is the name given to short fibers?

A

staple fibers

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4
Q

What are fibers?

A

fine strands measuring from 1cm (1/2 inch) to 20cm (8 inches) that can be twisted into yarns

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5
Q

What are natural fibers?

A

fibers that come from plant, animal and mineral sources

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6
Q

What are filament fibers?

A

very long continuous strand of fiber that may also be cut into staple fibers

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7
Q

What are cellulosic fibers?

A

fibers that are composed of pure cellulose. Cellulosic fibers can be either natural or man made

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8
Q

Give examples of natural cellulosic fibers?

A

cotton, flax and sisal

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9
Q

Give an example of a man made cellulosic fiber?

A

viscose

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10
Q

What are protein fibers?

A

fibers that come from an animal source

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11
Q

Give examples of protein fibers and name their sources

A

wool from sheep, wool from camels, cashmere & mohair from goats, silk from cocoons spun by silkworms.

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12
Q

What are regenerated fibers?

A

fibers made from chemically changing natural materials which come from plants

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13
Q

Give examples of regenerated fibers

A

viscose and modal

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14
Q

What are synthetic fibers?

A

fibers made from chemically changing materials which come from oil and coal

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15
Q

Give examples of synthetic fibers

A

acrylic, nylon and polyester

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16
Q

What are microfibers?

A

fibers that are less than one denier thick

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17
Q

What is fiber blend?

A

a combination of two or more fibers. The fibers may be combined in yarns or during the process of fabric making and they’ll assume the characteristics of each of the fibers used in their construction

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18
Q

Give an example of fiber blends

A

natural fibers and manufactured fibers

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19
Q

Define generic name?

A

the name for a group of related fibers

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20
Q

Define trade name

A

trade name is of a man made fiber and it is the name given by the fiber manufacturer to his own product

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21
Q

The sources of fibers can be either ?

A

natural or man made

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22
Q

Name the different sources of natural fibers and give an example of each

A

seedpods (cotton)
plant stems (flax/linen)
animal hair (wool)

23
Q

Some fibers can be manufactured using natural fibrous materials such as _______________, an example of which is ___________, or fibers can be built up (synthesized) from chemicals, as with _______________ or _____________.

A

wood pulp, rayon
nylon, polyester

24
Q

Fibers can be classified as?

A

cellulosic, protein, mineral or man made

25
Q

What are the two categories of man made fibers?

A

regenerated and synthetic

26
Q

Name the different categories of plant/cellulosic natural fibers

A

seed hairs, bast fibers, leaf fibers, nut husk fibers and mineral

27
Q

Name some examples of seed hair fibers

A

cotton and kapok

28
Q

Name some examples of bast fibers

A

flax, ramie, hemp and jute

29
Q

Name some examples of leaf fibers

A

abaca, pineapple and sisal (agave)

30
Q

Name some examples of nut husk fibers

A

coir and natural rubber

31
Q

Name some examples of mineral fibers

A

abestos

32
Q

Name the two sources of animal fibers

A

animal hair and animal secretion

33
Q

Name some examples of animal hair fibers

A

wool from, alpaca, camel, llama and angora rabbit

cashmere, mohair

34
Q

Give some examples of animal secretion fibers

A

silk ( cultivated an wild) and spider silk

35
Q

Give some examples of regenerated fibers

A

viscose, modal, acetate and triacetate

36
Q

Give some examples of synthetic fibers

A

acrylic, polyester and nylon (polyamide)

37
Q

What are the primary properties of textile fibers?

A

a high length-to-width ratio, strength, flexibility/pliability, spinning quality and uniformity

38
Q

What are the secondary properties of textile fibers?

A

1) physical shape
2) density
3) color
4) luster
5) moisture regain and absorption
6) elastic recovery and elongation
7) resiliency
8) thermal behavior
9) resistance to biological organisms and resistance to chemicals and other environmental conditions

39
Q

Explain the general process of fabric making

A

fabric making starts with fibers. First the fibers have to be made into yarns. The fibers are spun or twisted together to form yarns. The yarns are transformed into fabric by weaving or knitting, braiding or bonding. Finishes are applied to the fabric at the end, but they can also be applied to fibers and yarns earlier.

Fibres to yarns to fabric

40
Q

The best production of cotton is achieved in what type of climate?

A

tropical/warm climate under moist conditions

41
Q

Name two types of cotton

A

Sea Island cotton and American-Egyptian cotton

42
Q

The fleecy cotton fibers are ready for picking after?

A

after the seed boll matures and opens

43
Q

The picking of cotton is done by?

A

by hand, mechanical pickers or stripping devices

44
Q

The ‘class’ of a fiber refers to?

A

the staple length, the grade and the character of the cotton

45
Q

The ‘character’ of a fiber refers to?

A

the fiber strength, fineness, elastic recovery, uniformity, resiliency, pliability and cohesiveness

46
Q

Cotton fibers are composed of?

A

an outer cuticle (skin), a primary wall, a secondary wall and a central core (lumen)

47
Q

The lengthwise view of cotton shows a _________________ shape with __________ along the length

A

ribbon-like, twists

48
Q

Explain the production process of cotton

A

The fleecy cotton fibers are ready for picking after the seed boll matures and opens. Picking is done by hand, mechanical pickers or stripping devices. After picking, the cotton lint is separated from the seed by a process called ginning which removes all fibers and waste plant material from the seeds. The seeds are used for cattle feed and cotton seed oil. The fibers are packed into bales.

Samples are taken to determine the class of fiber. When the classification is complete, the bales are shipped to manufacturers for processing into yarns and fabrics. The best production of cotton is achieved under tropical/warm climate with moist conditions. Cotton fibers create fabrics that are comfortable.

49
Q

Characteristics of cotton fabrics

A

softness
moisture absorbency
permeability to air
pliability
it is easy to launder because the fabric’s strength increases when it is wet
it can accept dyes
it can be bleached

50
Q

Define cotton

A

cotton is a natural, cellulose, seed hair fiber which is derived from the cotton plant and is used to make comfortable clothing.

51
Q

Define linen

A

linen is a natural, cellulose, bast fiber which is derived from the stem or stalk of the flax plant and is used to make strong and cool clothing. It is also used to make table coverings and towels.

52
Q

The more complex name for the flax plant?

A

Linum usitatissimum

53
Q

The flax plant grows best in what climatic conditions?

A

a temperate climate with adequate moisture

TCF (3 decks)

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