sealing performance of stand-up package with spout and its open easiness would directly influence the shelf-life of product and its properness for usage. Sealing performance has become a focus of manufacturers to monitor.

1. Introduction to Performances of Stand-up Package with Spout and Torque Strength Testing of the Cap
Abstract: sealing performance of stand-up package with spout and its open easiness would directly influence the shelf-life of
product and its properness for usage. Sealing performance has become a focus of manufacturers to monitor.
Keywords: stand-up package with spout, sealing performance, torque strength, leak tester, torque tester, leak and seal
strength tester
In recent years, stand-up package with spout, owing to its multiple open-close cap, low material consumption, high printing
standard, low costs in logistics and low disposal quantity, has become a poplar kind of packaging. The sealing performance and
torque strength of stand-up package with spout would directly influence the product shelf-life and its properness for usage.
Hereafter, we would introduce sealing performance testing of the package and open easiness testing of its cap with the help
of Labthink leak tester and torque tester.
1.The Sealing Performance Testing of Stand-up Packaging with Spout
The sealing performance of stand-up packaging with spout refers to the reliability of the packaging’s sealing performance. This
test can help evaluate sealing integration of the whole package, so as to avoid leakage, contamination or deterioration caused
by inferior sealing performance. There are several testing methods for sealing performance, for which, leak tester is the most
common means. Labthink MFY-01 Leak Tester applies vacuum method to maintain 0.5 minute intervals at -30kpa, -50kpa,
-70kpa and -90kpa respectively. As to vacuum package, revival is observed after testing. The above-mentioned method is by
visual observation, and is a qualitative testing method. As to the leak and seal strength performance testing for stand-up
package with spout, instrument of positive method can be used, such as Labthink LSSD-01 Leak and Seal Strength Tester.
2.Torque Strength Testing for the Cap of Stand-up Packaging with Spout
The torque strength for open and close stand-up package with spout is an important index for manufacturers for online and
offline observation. Properness of the torque strength would greatly influence transportation and consumption. Labthink
NJY-20 Torque Tester is monitored by mini-computer to realize dual testing modes for lock force and open easiness. The
instrument is easy to operate with human-friendly interface. It can keep peak value automatically, display in multiple units,
and carry out statistical analysis. Labthink NJY-20 Torque Tester is precise in measurement and stable in performance. It’s a
necessity for production.

2. When sealing performance of the package and torque strength of the cap are qualified, other indexes, including sealing
strength and barrier property/permeation, should be evaluated, so as to guarantee shelf-life and properness for usage. For
more information, please visit www.labthink.cn.
Yarina Gao
Marketing Department
Email: trade5@labthink.cn
Tel: 86-531-85060139
www.labthink.cn/en