First experiments: the process

During the first day of experiments (14^th October) the following procedures took place:

·         different types of bottles were tested for burst strength

·         bottles of the same type were filled with solid C0₂ ranging from 2 to 34,5 gr.

The stable samples will be used for the compression test scheduled on the 17^th of this month

·         leakage through the cap was evaluated and different sealing methods were attempted

·         first set of measurements was taken to determine CO₂ leakage.

      Next measurements will take place on the 17^th of this month

·         12 bottles of the same type were filled with 6gr of solid C0₂ and will be tested together under compression (lateral)

·         The elastic deformation of the different samples was observed

Types of bottles

List of measurements on the samples

 

Based on the outcome of the experiments:

·         A comparison between PET bottles regarding burst strength was formulated

·         The areas of the PET bottles most prone to cracking were located 

·         A first perception of the relationship between CO₂ content and the resulting rigidity was obtained

·         The performance of screw caps for carbonated and non-carbonated products

was compared

In short, the steps of the experiment were the following:

Insert dry ice in the bottles

Examine deformation and cracking

Repeat process varying the dosage, the bottle type 

and the sealing method