Sealing Integrity Testing and Cap Torque Strength Testing of Stand-up Package with Spout

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 popular 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 Integrity Testing of Stand-up Packaging with Spout

MFY-01 Leak Tester

The sealing integrity 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 cap 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 cap 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.

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.labthinkinternational.com.cn

Sealing Performance Test of Medical Plastic Bottle

Owing to its light weight, high strength, solid structure and excellent sealing characteristics, as well as moisture-proof and cleanliness performances, plastic bottle has found its wide applications in packing oral pills or liquid medicine. Moreover, medical plastic bottle coincides with the special packaging requirements for medicines and can be directly filled without cleaning or drying. In order to avoid the influences of light, heat and oxidization, etc., pharmaceuticals need bottles with excellent sealing performances, so that damp or deterioration will not occur during their validity period. Thus, it has been clearly stipulated in the relevant standards for the sealing performance of medical plastic bottles, which is a key index for manufacturers. Hereinafter, this article is to briefly introduce the sealing performance test of medical plastic bottle with Labthink MFY-01 Leak Tester.  

Sealing performance is referred to the sealing reliability of medical plastic bottle. Through sealing performance test, sealing integrity of the whole package could be guaranteed. Thus, excellent sealing performance of medical plastic bottle is a guarantee against moisture or deterioration during validity. It has been regulated in relevant national standards as follows: take a certain amount of medical plastic bottles, and fill each bottle with some glass balls. Then, tighten the closures of the bottles. The torque forces are listed below:

Diameter of closure (mm)	Torque Force (N· cm)
15～22	59～78
23～48	98～118
49～70	147～176

Then, submerge the bottle specimen into the water prefilled in the container with vacuum device, and vacuumize the test chamber to the vacuum degree of less than 27kPa and keep it for 2 minutes, during which no water should enter into the bottle, or no bubbles should be observed.

The working principle of Labthink MFY-01 Leak Tester is as follows: submerge the specimen into water and vacuumize the test chamber to form the pressure difference between the inside and outside of the specimen. Observe leakage of the specimen and how the specimen expands and restores to its original shape after vacuum released to determine the sealing performance of it. Labthink MFY-01 is fully automatic, easy to operate and user friendly; no more manual operation is needed besides inputting pressure value and duration. The above testing method is by visual observation which provides a qualitative determination. For quantitative determination of sealing and leakage property, the seal tester with positive pressure method should be used, e.g. Labthink LSSD-01 Leak and Seal Strength Detector.

Besides the sealing performance, more indexes such as oxygen permeability and water permeability, etc. need to be tested for medical plastic bottle to guarantee the shelf life. For more information of other related testing instruments, please visit www.labthinkinternational.com.cn. 

Did You Really Seal Your Blister Packaging - A Seal Integrity Testing Method for Blister Packaging

[Abstract] As blister packages for pharmaceutical drugs become more popular because of their many benefits, such as protecting drugs over long shelf-life, portability, and being tamper resistant. All of these benefits are based on that the blister packages are sealed well. But did you really seal your blister packaging? Do you know how to identify if your blister packages are sealed well? This article will introduce a simple and precise seal integrity testing method for blister packaging.
[Keywords] Blister Packages, Blister packaging, sealing Performance of blister packaging, Seal integrity testing, Seal integrity testing method

As blister packages for pharmaceutical drugs become more popular because of their many benefits, such as protecting drugs over long shelf-life, portability, and being tamper resistant. For a quality and process engineer, the common characteristics of a blister package provide a challenge. The good news is that blister packaging lines should never require 100% testing, as the process can be controlled in ways such that random defects do not occur. But laboratory tests are indispensable.

One of essential characteristic of blister package is seal integrity. It is the primary characteristic of blister packaging as a protection of drugs. Now, manufacturers can use a test instrument, like the Labthink MFY-01 Leak tester, to identify if their blister packages are sealed perfectly in laboratory. This is an automotive, easy-operated and user-friendly instrument.

Current Standard
The current industry standard for blister packaging leak test is bubble emission method, which is a gross leak testing method. In this method, submerge the blister package spcimen in an immersion fluid in a vacuum chamber, and then evacuate the vacuum chamber to form differential pressure between the inside and outside of blister package specimen. The leakage property could be obtained by observing the steady progression of bubbles from the specimen and how the specimen expands and restores to its original shape after vacuum release.