The candidates did not write the advantages in combining cotton and polyester well.
The required answers to the questions are as follows:
Question 1: Definition of Terms
(a) (i) Blends:
A blend is two or more fibres put together as the yam is
being made or spun.
OR
Blend is a yarn spun from two or more fibres of different origins
(ii) Mixture:
A mixture is two yarns put together as the fabric is
made or woven.
OR
A mixture is a fabric woven from two different yarns
e.g. the weft is cotton and the warp thread is wool.
(b) Advantages in combining cotton and polyester
The end product is cooler to wear than polyester
It is more absorbent than polyester
It can stand hotter temperature.
It is more crease-resistant than cotton.
It does not fray as badly as polyester.
It is strong/durable.
It dries more quickly than cotton
It may be set into permanent creases or pleats.
It is more resistant to moth and mildew.
It is easy to launder.
It is more shrink-resistant than cotton.
(c)Explanation of tenns in fabric production
(i) Glazing:
It is a process of applying resin to cotton and linen to
make it crease-resistant and dirt-repellent. It also
gives it a sheen.
(ii) Sanforisation: It is a process whereby the fabric is shrunk before
appearing on the market.
OR
It is a treatment given to fabric to prevent shrinkage
(iii)Bonding:
(iv) Proban:
This is a method of making non-woven fabrics by
laying fabrics into sheets and applying adhesive
substances.
Pressure and heat help the adhesive bond the fibres
together.
It is a process which uses chemical treatment to
prevent flames spreading through the fabric.
OR
The process that makes the fabric flame-proof.
