Marker Making Definition: precise arrangement of pattern pieces or process of determining the most efficient layout of pattern pieces Points to be considered before marker making: •
Trang 1Marker Making
Definition:
precise arrangement of pattern pieces
or process of determining the most efficient layout of pattern pieces
Points to be considered before
marker making:
• Fabric width must be higher than marker width (1/2 inch)
Fabric length must be higher than marker length.
Length of the cutting table.
Trang 2Marker
Trang 3Marker Making
Marker Efficiency:
the percentage of the total
fabric that is actually used
in garment parts
Area of pattern in the marker
Marker Efficiency =
-X 100% Total area of the marker plan
Trang 4• Size of the garments:
Smaller and larger garment sizes ↓ ↓ Marker Marker
Efficiency
Medium garment sizes ↑ Marker Efficiency
• Numbers of sizes in a style:
Fewer and higher numbers of sizes in a style ↓ ↓ Marker Efficiency
Trang 5Plotter
Trang 6Marker efficiency can be increased
by changing pattern design of
particular parts of the garments
• Fabric characteristics:
Usually symmetrical fabric ↑ Marker Efficiency
Trang 7Marker Making
• Marker making method:
Computerized method Marker ↑
Computerized method Marker ↑
Efficiency
Manual method Marker Efficiency ↓
Manual method Marker Efficiency ↓
• Marker width:
↑
↑ marker width M.E and easier marker width M.E and easier ↑ ↑ marker plan
Trang 8Methods of marker making
A Manual method.
In this process, marker can be made in two ways
a By using full size pattern:
-full size pattern pieces on marker paper
or
-directly on the top ply of the fabric in a
spread
b By using miniaturized pattern:
-full size pattern pieces are reduced to
1/5 of its original size by using pantograph -made by plastic sheet or thick board paper
-Marker planning is done by using those
miniaturized patterns
-reproduced full size using the mini-marker as
a reference
Trang 9Methods of marker making
Area Covered by pattern measured by planimeter to get Marker efficiency.
higher marker efficiency as control
over the marker is better than the full size pattern
rapidly being replaced by
computerized method
Trang 10Pantograph
Trang 11Features of manual marker making
time consuming and require a great deal of space
errors and inconsistencies that may occur in grain variation, poor line definition,
placement and alignment of pieces and slip
of the pieces
Accuracy of a manually made marker
depends on the skill of the individual who
laid out the marker and traced it
Trang 12Methods of marker making
B computerized marker making
very accurate and provides the greatest opportunity for pattern manipulation, marker efficiency and
shortest response time
Production patterns may be developed on the
computer or digitized or scanned in to the computer
parameters for markers are entered in to the
computer from cutting orders - style numbers, size distribution and fabric width
Protective devices are built in to the programs to
ensure the grain alignment and prevent overlapping
of pieces
Automatic marker making may be used to determine yardage requirements and fabric costs for designs prior to line adoption
Trang 13Advantages of computerized method
Increases in material efficiency with
subsequent decreases in material waste,
Time and labor savings in making markers;
Improvements in overall marker quality;
Avoidance of backlogs during peak periods; and
Fast, precise cost proposals for clients.
Trang 14Disadvantages of computerized method:
Initial investment is high.
Skilled operator is required
Trang 16Modes of marker
A nap-either-way: symmetric, non directional fabrics,
considering only grain line
B nap-one-way: asymmetrical and directional fabrics,
all pattern pieces be placed on a marker in only one direction
C nap-up-and-down: some directional fabrics
all the pattern pieces of one size to be placed in
one direction and another size placed in the
opposite direction
D group: ‘end to end’ or ‘side to side’ shade variation,
pattern pieces of a size of garments are laid
together in accordance to the shade of the fabric
Trang 17Constraints of Marker making:
garment is depending on the matching
of grain line To maintain grain line is one of the biggest constraints to
achieve higher marker efficiency
attention required to set pattern pieces
on the asymmetrical fabric, such as
pile fabric, special print etc.
from check or stripe fabric requires
mirror image (matching check or stripe
in adjacent two parts of the garment)
Trang 18Constraints of Marker making:
d Cutting Quality: Marker should be
made carefully so that cutting blade can move easily in the lay
e Production Planning: production planning
is a constraint of marker making as
numbers of pieces of
different sizes are not exactly proportionate
Trang 19Fabric wastage outside marker
Ends of ply losses: For the extensibility of the fabric and limitation of cutting
machines, 2 cm allowances is required in
each end of the each ply.
Loss of fabric ends: during preparation of
the fabric lay, the last or end remains of the fabric roll are separated by cutting
Trang 20Fabric wastage outside marker
Selvedge losses: Each fabric has two
selvedges along width The amount of cut
out is considered 3% (approximately) along width
Purchase loss: Less fabric may wound on
roll than identified length
Trang 21Methods of Drawing a Marker
1 Marking directly on the fabric
a Drawing by Chalk or pencil:
mark directly onto the fabric using pipe clay or wax
not allow copying least accurate method Not applicable method for pile
or woolen fabric
Trang 22Methods of Drawing a Marker
B Paint Spray: fine jets of paint are
sprayed over the patterns that have been
laid on the fabric, leaving an outline of the patterns when they are removed
More fabric is required to allow gaps for paint.
Paint can migrate under the pattern edges
Pattern sizes grow as layers of paint build up The machine must be cleaned every day
Trang 23Methods of Drawing a Marker
pieces are precisely arranged on to the marker paper and draw the outline of the patterns by using pencil This
method is widely used in the industry
screen to produce a marker
and the range of the pattern pieces are shown on top
Trang 24Methods of Drawing a Marker
3 Computerized Drawing:
– These pieces can be rotated, reversed and
moved into place
– The computer can calculate marker efficiency – The completed marker is then drawn using a
linked digital plotter
– These systems are extremely quick and
accurate and an unlimited quantity of markers can be produced and/or reproduced
Trang 25Methods of Drawing a Marker
4 Photographic System: patterns pieces
are set onto a light sensitive paper passing through ultra-violet light and revealed by
using ammonia vapor This method is quick and clean
Trang 26Methods of Duplicating a Marker:
a Carbon duplicating: Carbon paper in
between two marker paper
capital and material costs
layer
difficult, labour intensive process
Trang 27Methods of Duplicating a Marker:
b Spirit duplicating: working procedure is same as Office duplicating machine/Xerox machine
size of the machine
copy set on the machine improperly
Trang 28Methods of Duplicating a Marker:
c Photographic method: With the
photographic method, the original marker is set onto a light sensitive paper using ultra- violet light and revealed by using ammonia vapor This method is quick and clean and produces unlimited numbers of duplications
Trang 29Methods of Duplicating a Marker:
d Perforated method: obsolete technique that involves punching a series of
perforation around the marker,
placing it on the fabric and lightly
dusting with chalk It can be used
many times