Gói Seam sealing ppt

Send the fabric to the • seal tape supplier for testing and suggesting • the appropriate seal tape 2.. Make mock up 40cm x 40cm from actual fabric and stitch in plus shape + wit

SEAM SEALING PROCESS

QUALITY DEPARTMENT

SEAM SEALING PROCESS

1 Send the fabric to the

• seal tape supplier for

testing and suggesting

• the appropriate seal

tape

2 Make mock up 40cm x

40cm from actual fabric

and stitch in plus shape ( +

) with actual seal tape

MOCK UP TESTING

3 Send the mock up to its lab for testing, if

ok approve & follow same condition for

production

If not ok , remake the mock up in the same manner as before but with revised

machine settings

SAMPLE OF TEST REPORT

TESTING PARAMETERS

• THE BASELINE STANDARD IS 2000 mm water for 2 minutes

• Then increase 1000 mm water for every

30 seconds

• Keep increasing until you reach the

breaking point

GO TO PRODUCTION

4 The approved seam sealing machine

setting must be clear to the operator and technician the parameters must be

available at the machine

MACHINE SETTING STANDARD

• SPEED OF THE MACHINE – 4

Meters/Minute

• TEMPRATURE – 530 to 550 Degrees Celsius

• HOT AIR PRESSURE – 1.1 to 1.3 kg/cm2

• ROLLER PRESSURE – 5 kg/cm2

• Generally this is the setting but it will be

different for different fabrics and different

machine brands.

ADJUST THE MACHINE AS

STANDARD

6 make sure the

machine setting is

as per the

approved standard

WATER PROOFING TEST IN

FACTORY

5 The output has to be tested atleast

2 times a day for water proofing

ability of seal tape while testing the

pressure has to be 3 psi for 2 to 3

minutes.

The record of test

must be maintained

& available at the

machine.

TESTING MACHINE

WORKING PROCEDURE

7 Before starting seam sealing machine should be running idle for 5 minutes

8 After joining the panels QC must check the seam & cut thread clean so that all topstitch will be smooth

ATTACH SEAM SEALING

Operator has to be careful while doing seam sealing to avoid breaking or joints.

Do not use overlap seal tape more than once if there is a break if more than once the seam

becomes thick and stiff.

CONTROL PROCEDURE

9 After attach seam sealing tape QC check 100% all seams

No puckering, must be smooth

No open seam

No run off seal tape

SEAM APPREARANCE MUST BE

AS SMOOTH AS POSSIBLE

AFTER SEAM SEALING.

CONTROL PROCEDURE

10 Water pressure testing is mandatory at the first out put every day.

First 10 pcs of the day should be kept for testing but testing should always be done

after atleast 30 minutes, so that seal tape is cool enough and bond properly.

11 Testing result must meet the standard

time – minimum 2 minutes

pressure – minimum 3 psi.

SEAL TAPE SPECIFICATIONS

COMMONLY USED SEAL TAPE

SEAL TAPE STORAGE