6.7.3 Continued

Question 1

Why is fusing used in waterproof garments?

Answer 1

To prevent water from passing through seams

Question 2

How is heat-fusing used to form a waterproof sealed seam? (2)

Answer 2

• seam tape covers the seams
• heat fusing is used to bond the inside of a product forming a waterproof sealed seam

Question 3

How are three layered seam tapes applied to seams of a garment? Why?

Answer 3

• by a hot air machine
• prevents water leaving through the seam

Question 4

What is another method instead of seam tape?

Answer 4

brush on plastic adhesive

Question 5

What do overlock stitches sew?

Answer 5

they sew over the edge of one or more pieces of material to form a strong barrier against fraying

Question 6

Use of two thread stitches (4)

Answer 6

• edging & seaming
• stitching elastic and lace to underwear
• hemming
• neatening seam edge

Question 7

Uses of three thread stitches (3)

Answer 7

• narrow rolled hems
• creating seams on knitted/woven fabrics
• neatening seam edge

Question 8

Uses of four thread stitches
Why

Answer 8

• high stress areas that need to stay flexible
• (strongest)

Question 9

Why is pressing (ironing) used?

Answer 9

• helps to press all seams open before joining them to different parts

Question 10

How do manufacturers seek to reduce wastage?

Answer 10

more effective lay planning of templates