6.7.3 Continued Flashcards
1
Q
Why is fusing used in waterproof garments?
A
To prevent water from passing through seams
2
Q
How is heat-fusing used to form a waterproof sealed seam? (2)
A
- seam tape covers the seams
- heat fusing is used to bond the inside of a product forming a waterproof sealed seam
3
Q
How are three layered seam tapes applied to seams of a garment? Why?
A
- by a hot air machine
- prevents water leaving through the seam
4
Q
What is another method instead of seam tape?
A
brush on plastic adhesive
5
Q
What do overlock stitches sew?
A
they sew over the edge of one or more pieces of material to form a strong barrier against fraying
6
Q
Use of two thread stitches (4)
A
- edging & seaming
- stitching elastic and lace to underwear
- hemming
- neatening seam edge
7
Q
Uses of three thread stitches (3)
A
- narrow rolled hems
- creating seams on knitted/woven fabrics
- neatening seam edge
8
Q
Uses of four thread stitches
Why
A
- high stress areas that need to stay flexible
- (strongest)
9
Q
Why is pressing (ironing) used?
A
- helps to press all seams open before joining them to different parts
10
Q
How do manufacturers seek to reduce wastage?
A
more effective lay planning of templates
