Construction Techniques Flashcards
How do you construct a french seam?
- Cut two pieces of equally sized fabric.
- Sew together the two pieces of fabric with wrong sides together and a 1.5 cm seam allowance.
- Trim down the seam allowance
- Press the seam allowance open
- Sew enclosing seam
- Finally press the seam to one side.
Explain how a piece of quilted fabric is constructed
- Cut two pieces of equally sized fabric
- Place a piece of wadding between the fabric pieces.
- Sew around the perimeter of the fabric
Explain how to make an appliqué embellishment
- Draw your design on a piece of paper
- Trace the design from the template to the paper side of the fusible webbing
- Cut out the fusible webbing leaving 1/4 inch around the tracing lines
- Place the piece onto the wrong side of your chosen fabric then press with an iron.
- Neatly cut out appliqué on the lines
- Peel off the paper backing, next position appliqué piece on fabric.
- Place a piece of cloth over the design then fuse it in place with an iron
- If you wish stitch around the perimeter of the appliqué
How do you construct a plain seam?
- Cut two equally sized pieces of fabric
- Place the fabric pieces on top of each other- right sides together
- Stitch a straight line with a seam allowance of 1.5cm
Explain how transfer printing would be applied to a fabric
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
What does the ‘resistant dyeing method’ mean?
Where dye is applied in a way to prevent it from reaching all the cloth so a type of pattern is formed
Describe the structure of a plain weave
It’s the simplest weave
Creates an interlocking pattern
The weft yarn passes over and under the warp yarns.
Describe the structure of a twill weave fabric
Creates a diagonal pattern(bias)
The weft yarn passes over and under either 2 or 4 warp yarns
Describe the structure of a Satin. Weave fabric
The Weft yarns over and under 4-7 warp yarns
Name 4 natural fibres
Wool
Silk
Linen
Cotton
Name 3 regenerated fibres
Viscose
Acetate
Tencel
Name 4 synthetic fibres
Polyester
Nylon
Acrylic
Elastane
Explain how computer transfer printing is carried out
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
Name 2 resist dyeing methods
Tie dye
Batik
Describe the structure of a weft knit
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
Describe the structure of a warp knit
Have interlocking loops that run vertically up and down the fabric
Describe the difference between a cotton Jersey fabric and a cotton woven fabric
The jersey fabric is knitted, so it is more elasticated because of the hoops. Woven fabrics lack elasticity
The jersey fabric is warmer
What is the difference between one off production , mass and batch ?
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
How is the batik process carried out?
- Create a design making sure it can be soon through stretched out fabric
- Apply hot wax design on fabric using a Tjanting tool
- Allow wax to dry
- Paint over/ immerse in dye bath
- Iron fabric between layers of paper to remove wax with heat
