Bundle system

Snap / POPPER Button attaching process1hossainA snap fastener (also called snap, popper, and press stud) is a pair of interlocking discs, made out of a metal or plastic, commonly used in place of buttons to fasten clothing and for similar purposes. A circular lip under one disc fits into a groove on the top of the other, holding them fast until a certain amount of force is applied. Snap fasteners are often used in children's clothing, as they are relatively easy for children to use and Mens jeans as well.Introducing of FastenersDifferent types of Fastener components

Dies & Snap components

Lower Die which feed the Socket Upper Die which makes Ring rivetingSocketWasherRingFasteners Application on Different types of Garments

Fasteners Application on Different types of Garments

Different types of Machines use to press Snap Fasteners

Electrical powered snap mcPneumatic powered snap pressing mcPneumatic powered snap pressing mcWith Laser sensorsPneumatic powered Snap pressing machine

Air PistonAir In to pistonAir out from pistonAir filterAir solenoid valveSafety guideWastage containerAir in after filteringUpper Die holder Main Air inAir regulator(Pres. Adjuster)Pres. MeterLower Die holderMachines should adjust according to buyers specifications

1. Machine Setting1.4. Pressure setting Pneumatic powered machine

Set required pressure using pres. regulatorDifferent Pressure readings

Psi, Kg/fcm2Mpa / psi2. Machine Safety

Safety GuideCheck safety of set safety guideSafety Guide must be checked using a device which similarThickness to Finger & Ensure Machine does not work untilSafety guide keeping touch the checking device.

3. Safer machine OperatingUse Goggles to protect eyes from broken fragmentsWear Finger guards for finger safety

4.2. Inspect Pressed Snap against the given approved mock-up.

Satin pillow test should be done by quality department

Defective garments should put to the popper reject box and only good garments should pass to end line

Mock up boards should hanged

Traffic light system should be applied

4.4. Defect Identification.

ImageDefect DescriptionEyelet become shape out due to over pressure applying or use wrong DieFor the eyelet.Eyelet Post reverted and split over edge due to inaccurate pressure.Snap/eyelet color is removing due to using wrong Die/ Over pressure or cause of poor quality of snap.Open Eyelet/snap due to wrong machine setting.

ImageDefect DescriptionSnap/Eyelet looseness due to inaccurate pressure / incorrect die is in place.Fabric gets damaged due to wrong die/machine setting.

Pull test is carried-out to ensure the Snap attaching process & machine setting are accurate in order to achieve Customer quality requirements of Pull force testing and to ensure it is complying with safety requirements of the particular Customer.

4.5. Button Pull Test.

Procedure

Pull Test machine Calibration; The Pull test machine is Calibrated by using 15 lbs (6.82kg) Dead weight.

The Dead weight is Calibrated from BSTI.

Machine must be Calibrated daily before the Test.

Accepted variation of calibration is +/- 10% for pull force testing. Pull Test; Snap attached samples from particular style are Tested daily as per Buyer requirement of Pull force.

Pressure is applied on testing snap by increasing gradually until reach the Buyer specified force requirements for recommended time.

If the Snap is pulled out with in the mentioned pressure & time, the Machine has to be stopped & Do required adjustments, check, re- set & re-calibrate & ensure ok for the Test.

And same Pull test need to be carried-out on 3 samples in case of changing any Die mid of the production. Thank you !!!