What is Pressing Machine? Resistance to Abrasive Paper Process
Pressing Machine
Pressing machine is used for pressing the garments by heat and it make permanent palette. In this machine we used steam as heat. First press the garments take steam to reaction of resin.
Abrasive paper
This paper which is used for scrapping the garments is called abrasive paper . This paper has so many grade. In washing plant we used some of the grade. Like 320,420,620. This serial is based on the power of the paper. If the number is less power is more .If the number is high power is less.
RESISTANCE TO ABRASIVE PAPER OF COATED GOLF BALLS
- SCOPE:
This In House Test Method describes the method of test in order to determine the abrasive resistance of coated golf balls, using pilling boxes modified with course abrasive paper.
- PRINCIPLE
The correct number of test specimens are to be prepared and tested as specified within this test method in order to achieve a performance assessment of the product/fabric as described within the scope.
- EQUIPMENT:
- ICI pilling boxes lined with standard cork 3mm thick, with coarse abrasive paper attached to the cork lining. (Speed 30rpm reverse tumble every 100 revs).
- Roll double sided tape.
- CONDITIONING
The test specimens are to be conditioned in the standard atmosphere of 65% Relative Humidity (RH) +/- 2% and 20°C +/- 2°C for a minimum of 16 hours. All tests should also be carried out in this atmosphere.
- HEALTH & SAFETY
Not applicable.
- PREPARATION OF TEST SPECIMENS/MATERIALS
6.1 Cut six (6) squares 9” x 9” of coarse abrasive paper and line reverse with double sided tape.
6.2 Remove backing from tape and attach all squares to the cork lining inside the box.
Carry out the test in the conditioned atmosphere.
- TEST PROCEDURE
Before commencing test, ensure that new abrasive paper is in the box.
7.1 Place the four balls into the pilling box. Close and secure the lid.
7.2 Reverse tumble the samples (balls) in the box for a total of 1,800 revolutions (1 hour) reversing every 100 revs. Examine at 100 revs, 1,000 revs and end at 1,800 revs.
- ASSESSMENT/RESULTS OF TESTED SPECIMENS
Grade the balls against the standards already prepared.
Rate each sample using the grades as follows:
* No change in print appearance/texture of ball
* Slight change in print appearance/texture of ball
* Moderate change in print appearance/texture of ball
* Severe change in print appearance/texture of ball
* Complete change in print appearance/texture of ball.
Summery
REPORTING OF RESULTS. Record the grades as above.. Report the results after 100 revs, 500 revs, 1,000 revs and 1,800 revs. Pressing Machine is used in garments factory