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A Pumping Method for Assessing Airtightness of Packs - Application to Heated Tobacco Products * Cover

A Pumping Method for Assessing Airtightness of Packs - Application to Heated Tobacco Products *

Open Access
|Dec 2023

Figures & Tables

Figure 1.

Structure of an airtightness assessing system.
1) punching device; 2) pack of HTPs; 3) deflation pump; 4) gas flowmeter; 5) program control system; 6) differential pressure gauge; 7) vacuum generator; 8) testing chamber; 9) ventilation channel; 10) vacuum area; 11) vacuum channel; 12) sucker.
Structure of an airtightness assessing system. 1) punching device; 2) pack of HTPs; 3) deflation pump; 4) gas flowmeter; 5) program control system; 6) differential pressure gauge; 7) vacuum generator; 8) testing chamber; 9) ventilation channel; 10) vacuum area; 11) vacuum channel; 12) sucker.

Figure 2.

The airtightness as well as the sample mass during 10 days of conditioning at 22 °C, 60% relative humidity.
A) Sample C; B) Sample M; C) Sample T.
The airtightness as well as the sample mass during 10 days of conditioning at 22 °C, 60% relative humidity. A) Sample C; B) Sample M; C) Sample T.

Figure 3.

The airtightness as well as the mass change after 10 days of conditioning at 22 °C, 60% relative humidity.
A) Sample C; B) Sample M; C) Sample T.
The airtightness as well as the mass change after 10 days of conditioning at 22 °C, 60% relative humidity. A) Sample C; B) Sample M; C) Sample T.

Accuracy results obtained with air permeable disks_

Disk1 (kPa)2 (kPa)3 (kPa)4 (kPa)5 (kPa)
10.071.113.255.138.04
20.081.113.275.138.05
30.071.113.275.148.06
40.061.113.275.138.07
50.071.113.275.138.08
60.051.123.275.138.06
70.071.113.275.148.08
80.071.113.275.148.10
90.071.113.275.128.11
100.071.123.265.148.11
      
Mean0.071.113.275.138.08
SD0.0080.0040.0070.0110.025
r0.0300.0100.0200.0400.070
cv0.1180.0040.0020.0020.003

Results obtained with HTP packs_

HTP packsSample C1 (kPa)Sample C2 (kPa)Sample M1 (kPa)Sample M2 (kPa)Sample T1 (kPa)Sample T2 (kPa)
16.263.561.402.334.203.69
26.143.561.392.354.183.54
36.153.551.372.374.183.54
46.063.541.402.394.173.57
56.043.541.402.404.213.46
66.033.521.402.424.303.46
76.043.531.392.444.333.64
86.013.531.422.424.343.57
95.983.521.332.444.383.51
106.023.501.362.454.383.42
      
Mean6.073.541.392.404.273.54
SD0.0850.0190.0260.0410.0870.083
r0.2800.0600.0900.1200.2100.270
cv0.0140.0050.0190.0170.0200.023
Language: English
Page range: 140 - 146
Submitted on: May 8, 2023
Accepted on: Sep 14, 2023
Published on: Dec 16, 2023
Published by: Institut für Tabakforschung GmbH
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2023 Zhihao Chen, Zhandong Shi, Pengfei Zhang, Li Ding, Qing Zhang, Zhigang Li, Miao Sun, Chao Ye, Hao Wang, Xiaosong Wu, Dong Li, published by Institut für Tabakforschung GmbH
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License.