Alum/PVC Film Testing Procedure:

The sample Alum/PVC foil is made from the Aluminium foil laminated with a PVC (polyvinyl chloride) Layer. The foil is printed and unprinted type. The foil is printed on the aluminium layer. The aluminium layer is the outer side of the foil, and the PVC layer is inside the foil. The pharmaceutical finished product tablets and capsules.

Description:

The sample of Aluminium foil is laminated with a PVC layer. There are two types of printed or unprinted foil.

2. Text matter:

The sample of text matter testing. The film is printed, and the sample is compared with a shade card and text matter.

3. Color scheme:

The Alum/PVC foil sample is a texting color scheme that matches with the shade card and Pantone card.

4. Width:

The sample of Alum/PVC foil is being tested for width measurement using a measuring scale. The sample is taken and measured using width and down readings.

5. Inner core diameter:

The sample of foil is as a roll, the inner core diameter measuring with the measuring scale. Take a sample from the stock, measure the inner core diameter, and note down the reading.

6. Identification by FTIR:

The identification of the sample of Alum/PVC Foil is done by identification testing performed with the help of an instrument by FTIR. The sample of the PVC side layer identifies its instrument. Its sample compares the sample of the PVC Layer reference standard. We take the PVC Reference Standard and the sample of the PVC Layer side. Its graph is plotted at a wavelength of 3800-650cm^-1.

The spectrum obtained from the specimen exhibits major absorption bands only at the same wavelengths as the spectrum of the PVC reference standard.

7. Grammage:

Total Grammage:

The sample of Alum/PVC foil is total Grammage testing cut the sample 10 x 10 cm² or 5 x 5 cm² with the help of a GSM plate. If the sample is printed, remove the text matter, the cotton, or the clean cloth dipped in ethyl acetate rubbing on the text matter. The text matter is removed from the aluminium layer. The sample was dried at room temperature, weighing the sample at the analytical balance, and calculated by the given formula,

Total Grammage = weight in grams x 100 or 400 (the sample cut 10 x 10 cm² or 5 x 5 cm²)

Aluminium and PVC layer Grammage:

The sample of total Grammage sample was dipped in an ethyl acetate-containing glass beaker. After 15-20 min, the aluminium layer is separated from the PVC Layer. Both layer is washed from the water. Dry the sample in the hot air oven for 2 min at 65⁰c. Cool the sample in the desiccator. Weighing the sample at analytical. Calculation of the Grammage by the given formula,

Aluminium layer Grammage =weight in grams x 100 or 400 (the sample cut 10 x 10 cm² or 5 x 5 cm²)

PVC Layer Grammage = weight in grams x 100 or 400 (the sample cut 10 x 10 cm² or 5 x 5 cm²)

8. Identification of aluminium by chemical method

This test is performed to identify aluminium by the chemical method. Take a sample of the Grammage of the aluminium layer. In a beaker, mix 30ml 1NHCL, then heat on a hot plate. The beaker aluminium foil to dissolve in solution, add about 0.5 ml conc HCL and thioacetamide regents. No precipitate is formed, add NaoH solution dropwise, and a gelatinous white precipitate is formed, which dissolves on further addition of 1NaoH Solution after the gradual addition of ammonium hydroxide solution gelatinous white precipitate is re-formed.

9. Thickness:

Total thickness

The sample of Alum/PVC Foil total thickness with the help of a digital micrometer. The sample measures the total thickness and notes down the reading.

Aluminium layer thickness

The sample of the Aluminium Grammage Layer measures the total thickness with the help of a digital micrometer. The sample measures the total thickness and notes down the reading.

The PVC Layer

The sample of the PVC Grammage Layer measures the total thickness with the help of a digital micrometer. The sample measures the total thickness and notes down the reading.

10. Pinhole:

The selected sample of Alum/PVC foil tested the pinhole of the sample foil with the help of an instrument pinhole tester. The sample was plotted on the back of the light background the light visually, the not observe the hole in the sample. If the sample has a hole light passed the light, it is easily verified in a pinhole. It test is important for foil in pharmaceutical finished product packaging.