Construction Techniques

Question 1

How do you construct a french seam?

Answer 1

1. Cut two pieces of equally sized fabric.
2. Sew together the two pieces of fabric with wrong sides together and a 1.5 cm seam allowance.
3. Trim down the seam allowance
4. Press the seam allowance open
5. Sew enclosing seam
6. Finally press the seam to one side.

Question 2

Explain how a piece of quilted fabric is constructed

Answer 2

1. Cut two pieces of equally sized fabric
2. Place a piece of wadding between the fabric pieces.
3. Sew around the perimeter of the fabric

Question 3

Explain how to make an appliqué embellishment

Answer 3

1. Draw your design on a piece of paper
2. Trace the design from the template to the paper side of the fusible webbing
3. Cut out the fusible webbing leaving 1/4 inch around the tracing lines
4. Place the piece onto the wrong side of your chosen fabric then press with an iron.
5. Neatly cut out appliqué on the lines
6. Peel off the paper backing, next position appliqué piece on fabric.
7. Place a piece of cloth over the design then fuse it in place with an iron
8. If you wish stitch around the perimeter of the appliqué

Question 4

How do you construct a plain seam?

Answer 4

1. Cut two equally sized pieces of fabric
2. Place the fabric pieces on top of each other- right sides together
3. Stitch a straight line with a seam allowance of 1.5cm

Question 5

Explain how transfer printing would be applied to a fabric

Answer 5

Design is printed onto a special type of paper called sublimation paper.

The design is then transferred onto fabric using special heat rollers the fabric must be of at least 50% synthetic fibre

Question 6

What does the ‘resistant dyeing method’ mean?

Answer 6

Where dye is applied in a way to prevent it from reaching all the cloth so a type of pattern is formed

Question 7

Describe the structure of a plain weave

Answer 7

It’s the simplest weave
Creates an interlocking pattern
The weft yarn passes over and under the warp yarns.

Question 8

Describe the structure of a twill weave fabric

Answer 8

Creates a diagonal pattern(bias)

The weft yarn passes over and under either 2 or 4 warp yarns

Question 9

Describe the structure of a Satin. Weave fabric

Answer 9

The Weft yarns over and under 4-7 warp yarns

Question 10

Name 4 natural fibres

Answer 10

Wool
Silk

Linen
Cotton

Question 11

Name 3 regenerated fibres

Answer 11

Viscose
Acetate
Tencel

Question 12

Name 4 synthetic fibres

Answer 12

Polyester
Nylon
Acrylic
Elastane

Question 13

Explain how computer transfer printing is carried out

Answer 13

The computer is needed to transfer design

The design is then printed onto special transfer paper

Using an iron design is transferred face down onto fabric

Question 14

Name 2 resist dyeing methods

Answer 14

Tie dye

Batik

Question 15

Describe the structure of a weft knit

Answer 15

Have horizontal rows of knitted yarn

Have horizontal ribs on the wrong side

Have interlock loops above and below each row, that hold the fabric together

Question 16

Describe the structure of a warp knit

Answer 16

Have interlocking loops that run vertically up and down the fabric

Question 17

Describe the difference between a cotton Jersey fabric and a cotton woven fabric

Answer 17

The jersey fabric is knitted, so it is more elasticated because of the hoops. Woven fabrics lack elasticity

The jersey fabric is warmer

Question 18

What is the difference between one off production , mass and batch ?

Answer 18

Job- made by an individual or small team
Operators are highly skilled and use versatile equipment eg wedding dress

Batch - reasonable amount of products made for a limited amount of time eg seasonal demand.
Lower production costs than one off
Eg swimwear

Mass- used to manufacture large numbers of product for a long period of time
Products can usually be made cheaply and aren’t difficult to make eg tights

Question 19

How is the batik process carried out?

Answer 19

1. Create a design making sure it can be soon through stretched out fabric
2. Apply hot wax design on fabric using a Tjanting tool
3. Allow wax to dry
4. Paint over/ immerse in dye bath
5. Iron fabric between layers of paper to remove wax with heat