CAD, Computer-aided design, garments pattern made in a computer using different CAD software. CAD is the 1st step of Garments manufacturing, garments measurement, shape, and pattern can be controlled easily. Here I am giving CAD room working procedures from starting pattern making to bulk marker printing flow chart-wise, your concept will be clear about CAD work what they have to do in the Garments industry.
Purpose of using CAD in Garments:
1. For reducing time in marker making.
2. For reducing Marker Wastage.
3. For increasing marker efficiency.
4. To make the marker accurate.
5. To calculate the fabric consumption accurately.
CAD/Pattern Room SOP, Procedure and working Flow chart in Apparel Industry
Initial Tech-pack/ PDM receive
From Merch Dept
↓
Create a New Pattern
↓
Calculate Fabrics Consumption
by Electric mini marker in Yardage Yield (YY)
↓
Send Consumption to Buyer
↓
Consumption Approval
↓
Order Confirmation
↓
Receive E-Pattern, block and
Fit Sample from a buyer
↓
Pattern Grading
↓
Submit Pattern to buyer
↓
Approve→ Reject→ Remake
↓
Marker Making for Sample
↓
Shrinkage and Sewing loss adjustment
↓
Sample making for bulk
production
↓
Approve sample from Buying
House
↓
Marker making for size set
↓
Marker printing
↓
Cut size set
↓
↓
Pattern correction
↓
Marker printing by
↓
Send Marker to cutting
↓
Marker Lay
↓
Bulk cutting
Note: The whole process flow chart for new order development, when you do rebuy/ repeat order for the same style you may not need to do consumption and marker making again.
Bulk cutting: If everything is okay then bulk cutting start. A straight knife, a round knife is used to cut. During cutting Production proper tension should be maintained.
CAD section/ Department Flow chart SOP is described briefly:
Initial
tech pack/PDM receives from merchandising dept.:
Firstly have to know about the tech pack / PDM (Product
development Method) sheet. The sheet which contains all detailed descriptions of
a definite garment is known as the tech pack/PDM sheet. CAD section collects it
from the merchandiser at first.
Create a
new Pattern:
In this step, the CAD department develops a pattern according to
tech pack requisition. “Pattern” is a hard paper that contains all single parts of
a garment.
Calculate
fabric consumption by an electric mini marker in yds:
Consumption means – How much fabric needs to produce a
garment. With the revolution of scientific invention nowadays it does not need
to calculate manually. It is already calculated by CAD section automated
Lectra/Gerber/Red tree software.
Send
consumption to Buyer:
After calculating the consumption, the report sends to the buyer
for approval. The less consumption you can submit the more chance to get an order
for those styles.
Consumption
Approval:
If the buyer is satisfied with the consumption report, Then a buyer
approved the report and agrees to place an order.
Order
Confirmation:
Here Order is confirmed by the buyer. If the buyer confirms an order, the garments maker may go forward with the next process.
Receive
E-Pattern, Block and fit sample from a buyer:
CAD section receives E-pattern, Block, and fit samples from the buyer. A block sample means the pattern without allowance. Fit sample means the
sample fit for a dummy.
Pattern
Grading: Grading means the size variation from the master size. Firstly a pattern is created with the
standard Size, then it would be graded
according to all sizes. suppose, S, M, L, XL, XXL sizes are ordered. L is the master size pattern. Then S, M, XL, XXL are created based on master
size.
Submit to the buyer: After completing grading the complete pattern is submitted
to a buyer for approval.
If Approve, then goes for marker making for a sample. If not, it
will be rejected and comments for the remake.
Marker
Making for a sample:
For Sample making
marker is created. A marker is a thin piece of paper that bears all the parts of garments. Here Marker is created by CAD software.
Shrinkage
and sewing loss adjustment:
During pattern making, they adjust the shrinkage and sewing
thread loss tendency at the warp and weft direction.
Sample
Making for bulk production:
Now the sample is created for bulk production.
Approve
sample from buying a house:
In this step, The sample for bulk is approved from buying the house. Then go for bulk.
Marker
making for size set:
According to the required size, the marker is produced by CAD.
Marker
Printing:
Now the created marker is ready for print.
Cut size
set:
Size set marker used for trial cutting. Then check
measurement before and after wash.
P.P
meeting: P.P means (pre-production) meeting. Here the P.P meeting
arranged so that styling never be a mistake.
Pattern
Correction: If any problem is found in the size set, In the P.P meeting the solution will be given where the pattern would be correct.
Marker
printing by Plotter:
The plotter machine is used for marker printing. The completed
marker is printed through it.
Send marker
to cutting:
Marker is ready to send the cutting section.
Marker lay: After spreading the fabric on the cutting
table the marker is placed on it. Before Cutting the marker is checked very
carefully, whether any parts or sizes are missing or not.
Bulk cutting: If everything is okay then bulk cutting start. A straight knife, a round knife is used to cut. During cutting Production proper tension should be maintained.