This article consists of Standard test procedure for Polybag.

Standard test procedure for Polybag

1.Description:

Following visual checking to be carried out

Procedure: Examine Low-density polyethylene (LDPE) Bags in day light for appearance. Low-density polyethylene (LDPE) Bags should receive in properly wrapped with polythene bag. Note down the results in test data sheet.

(Standard: Plain 3 sides closed & one side open translucent LDPE Low density polythene) bag. Free from dust, any foreign particles & blisters in bubble forms.)

2. Identification of LDPE:

(Test to be performed on maximum five samples)

Procedure: Burn Test.-Hold the piece of LDPE with pair of tong on burner. LDPE will impart paraffin odour and the burn piece when dipped in water burn piece will float.

Note down the results in test data sheet of Standard test procedure for Polybag.

(Standard: LDPE will impart paraffin odour and the burn piece when dipped in water burn piece will float)

3. Length:

(Test to be performed on maximum five samples)

Instrument: Scale

Procedure: Measure the Length of Low-density polyethylene (LDPE) Bags by using and calculate the minimum, maximum and average Length.

Note down the results in test data sheet of Standard test procedure for Polybag.

4. Width:

(Test to be performed on maximum five samples)

Instrument: Scale

Procedure: Measure the Width of Low-density polyethylene (LDPE) Bags by using and calculate the minimum, maximum and average Width.

Note down the results in test data sheet.

5. Thickness:

(Test to be performed on maximum five samples)

Instrument: Digital Micrometer

Procedure: Measure the Thickness of Low-density polyethylene (LDPE) Bags by using foot ruler and calculate the minimum, maximum and average Thickness.

Note down the results in test data sheet.

6. Grammage:

(Test to be performed on maximum five samples)

Instrument: Scale

Procedure: Cut the 5 X 5 cms piece of Low-density polyethylene (LDPE) Bags by using scale and cutter

Weigh the piece on analytical balance, note down the weight in test data sheet.

Calculate the grammage as per formula given below.

Weight of piece in gm                            10000

GSM= —————————————— x   —————————

Length of piece in cms                      width of piece in cms

Note down the results in test data sheet of Standard test procedure for Polybag

7. Sealing:

(Test to be performed on maximum five samples)

Procedure: Fill with some water in Low-density polyethylene (LDPE) Bags and check visually.

Note down the results in test data sheet.

(Standard: The bottom sealing should be perfect)

8. Cutting/ Finishing:

(Test to be performed on maximum five sampled rolls)

Procedure: Check visually that Check for improper cut or finish.

Note down the results in test data sheet of Standard test procedure for Polybag

(Standard: Should be perfect)

9. Revision History: