Testing of reliability of non-destructive pressure differential package leakage testers with semi-rigid aseptic cups

Eero Hurme, Gun Wirtanen, Lena Axelson-Larsson, Raija Ahvenainen

Research output: Contribution to journalArticleScientific

7 Citations (Scopus)

Abstract

The sensitivity and reliability of two commercial non-destructive leak testers were studied using commercially manufactured semi-rigid aseptic cups with headspace filled with milk pudding.
The lids of some of the aseptic cups had artificially constructed holes 10–60 μm in diameter. Leak testing was based either on detection or external vacuum decay in a test chamber or internal pressure decay in the package during mechanical compression.
The effect of leak testing itself on the cup integrity was also examined. From the evaluated methods, the external vacuum decay method showed greater sensitivity and reliability for detection of leakages. External vacuum and internal pressure decay methods did not reliably detect holes of 29 and 60 μm in diameter, respectively.
Furthermore, neither of the methods could reliably detect the threshold leakage of 10 μm in diameter for bacterial penetration (determined earlier using aseptic cups with artificially made holes).
Blocking of the holes with pudding greatly decreased the sensitivity of both leak testers. Leak testing did not affect the integrity of intact cups.
Original languageEnglish
Pages (from-to)49-55
JournalFood Control
Volume9
Issue number1
DOIs
Publication statusPublished - 1998
MoE publication typeB1 Article in a scientific magazine

Fingerprint

Vacuum
deterioration
puddings
Pressure
testing
lids
methodology
headspace analysis
Milk
milk

Cite this

Hurme, Eero ; Wirtanen, Gun ; Axelson-Larsson, Lena ; Ahvenainen, Raija. / Testing of reliability of non-destructive pressure differential package leakage testers with semi-rigid aseptic cups. In: Food Control. 1998 ; Vol. 9, No. 1. pp. 49-55.
@article{bd8fc0fd6f5447cab7610d4cf76a42a1,
title = "Testing of reliability of non-destructive pressure differential package leakage testers with semi-rigid aseptic cups",
abstract = "The sensitivity and reliability of two commercial non-destructive leak testers were studied using commercially manufactured semi-rigid aseptic cups with headspace filled with milk pudding. The lids of some of the aseptic cups had artificially constructed holes 10–60 μm in diameter. Leak testing was based either on detection or external vacuum decay in a test chamber or internal pressure decay in the package during mechanical compression. The effect of leak testing itself on the cup integrity was also examined. From the evaluated methods, the external vacuum decay method showed greater sensitivity and reliability for detection of leakages. External vacuum and internal pressure decay methods did not reliably detect holes of 29 and 60 μm in diameter, respectively. Furthermore, neither of the methods could reliably detect the threshold leakage of 10 μm in diameter for bacterial penetration (determined earlier using aseptic cups with artificially made holes). Blocking of the holes with pudding greatly decreased the sensitivity of both leak testers. Leak testing did not affect the integrity of intact cups.",
author = "Eero Hurme and Gun Wirtanen and Lena Axelson-Larsson and Raija Ahvenainen",
year = "1998",
doi = "10.1016/S0956-7135(97)00054-6",
language = "English",
volume = "9",
pages = "49--55",
journal = "Food Control",
issn = "0956-7135",
publisher = "Elsevier",
number = "1",

}

Testing of reliability of non-destructive pressure differential package leakage testers with semi-rigid aseptic cups. / Hurme, Eero; Wirtanen, Gun; Axelson-Larsson, Lena; Ahvenainen, Raija.

In: Food Control, Vol. 9, No. 1, 1998, p. 49-55.

Research output: Contribution to journalArticleScientific

TY - JOUR

T1 - Testing of reliability of non-destructive pressure differential package leakage testers with semi-rigid aseptic cups

AU - Hurme, Eero

AU - Wirtanen, Gun

AU - Axelson-Larsson, Lena

AU - Ahvenainen, Raija

PY - 1998

Y1 - 1998

N2 - The sensitivity and reliability of two commercial non-destructive leak testers were studied using commercially manufactured semi-rigid aseptic cups with headspace filled with milk pudding. The lids of some of the aseptic cups had artificially constructed holes 10–60 μm in diameter. Leak testing was based either on detection or external vacuum decay in a test chamber or internal pressure decay in the package during mechanical compression. The effect of leak testing itself on the cup integrity was also examined. From the evaluated methods, the external vacuum decay method showed greater sensitivity and reliability for detection of leakages. External vacuum and internal pressure decay methods did not reliably detect holes of 29 and 60 μm in diameter, respectively. Furthermore, neither of the methods could reliably detect the threshold leakage of 10 μm in diameter for bacterial penetration (determined earlier using aseptic cups with artificially made holes). Blocking of the holes with pudding greatly decreased the sensitivity of both leak testers. Leak testing did not affect the integrity of intact cups.

AB - The sensitivity and reliability of two commercial non-destructive leak testers were studied using commercially manufactured semi-rigid aseptic cups with headspace filled with milk pudding. The lids of some of the aseptic cups had artificially constructed holes 10–60 μm in diameter. Leak testing was based either on detection or external vacuum decay in a test chamber or internal pressure decay in the package during mechanical compression. The effect of leak testing itself on the cup integrity was also examined. From the evaluated methods, the external vacuum decay method showed greater sensitivity and reliability for detection of leakages. External vacuum and internal pressure decay methods did not reliably detect holes of 29 and 60 μm in diameter, respectively. Furthermore, neither of the methods could reliably detect the threshold leakage of 10 μm in diameter for bacterial penetration (determined earlier using aseptic cups with artificially made holes). Blocking of the holes with pudding greatly decreased the sensitivity of both leak testers. Leak testing did not affect the integrity of intact cups.

U2 - 10.1016/S0956-7135(97)00054-6

DO - 10.1016/S0956-7135(97)00054-6

M3 - Article

VL - 9

SP - 49

EP - 55

JO - Food Control

JF - Food Control

SN - 0956-7135

IS - 1

ER -