Air Permeability Tester TQD-G1

What is Air Permeability?

Air Permeability is a resistance of fabrics (woven, knitted and non woven textile materials) to the passage of air under constant pre-set air pressure. Air permeability is an important property of some textile materials. The air permeability is mainly dependent upon fabric's weight and construction (thickness and porosity).

Labthink TQD-G1 Air Permeability Tester is professionally applicable to the determination of air permeability of decorating materials used in cars, e.g. polyurethane, expanded plastics, PVC, leather, textiles, non-woven and other materials.

TQD-G1 Air Permeability Tester conforms to the multiple international standards:

• ISO 4638 - Polymeric materials, cellular flexible -- Determination of air flow permeability
• ISO 5636 - Paper and board -- Determination of air permeance and air resistance
• ISO 9237 - Textiles -- Determination of the permeability of fabrics to air
• ASTM D737 - Standard Test Method for Air Permeability of Textile Fabrics
• TAPPI T460 - Air Resistance of Paper (Gurley Method)

Air Permeability Tester Priciple:

• Method A
  Providing a constant air flux going through the specimen vertically, the air permeability could be obtained by measuring the pressure difference.
• Method B
  Providing the constant pressure difference between two sides of the specimen, the air permeability could be obtained by measuring the air flux through specific area in the certain time.

Air Permeability Tester Technical Specifications:

• Test Range of Pressure: 0 ~ 1 KPa
• Test Range of Flux: 0 ~ 1800 L/h
• Specimen Size: Method A: 52 mm x 52 mm, Method B:Φ12 mm ≤ D(diameter) ≤ Φ71 mm

About Labthink:

Labthink, focusing on the laboratory testing instruments R&D and production and laboratory IT services, is dedicated to provide professional quality control solutions for customers in packaging, food, pharmaceutical, medical, daily chemistry, printing, adhesive, automotive, petrochemistry, bioscience, construction, new energy and other industries. 

More information about Air Permeability Tester and relative testing instruments? Please feel free to contact us via Labthinkchina@gmail.com.

Packaging Seal Strength Tester XLW (PC)

XLW (PC) packaging seal strength tester is professionally applicable to the determination of force properties of various flexible packaging materials, with high precision (better than 0.5% of reading value) and multiple test ranges.

This instrument conforms to various national and international standards as follows:
ASTM F88 - Standard Test Method for Seal Strength of Flexible Barrier Materials


Part examples for the Packaging Seal Strength Tester Basic Applications:
Heat Seal Strength Test, Tensile Property, 90 & 180 Degree Peel Test, Tear Resistance Test and etc.

Packaging Seal Stength Test Principle:
The pre-conditioned specimen is mounted between two grips, which move in relative direction during the test. The signals of force and displacement changes are separately recorded by the load cell fixed on the driven grip and embedded displacement transducer. The tensile strength, tear strength and elongation rate can be obtained by further calculation.

View the video:

More information about packaging seal strength tester and relative testing instruments?  Please contact us via Labthinkchina@gmail.com

Package Integrity Testing Equipment

In order to maintain the sterility of a packaged product until it reaches its point of end use, Manufacturers must demonstrate that, under the rigors of distribution, storage, handling, and aging, the sterile package integrity is maintained at least for the claimed shelf life of the food or medical device or product. The growth of these barrier packages and retort pouch use is a powerful driving force behind the need to define, standardize and institute critical package integrity tests.

A number of physical tests are commonly used for Packages integrity, including:

• Visual inspection method - "eyeballing" the pouch for problem
• Internal pressure method (bubble testing)
• Vacuum leak method, in which the package is submerged in water inside a vacuum chamber and escaping bubbles are observed
• Trace gas detection, where the package is pressurized with a gas other than air and then examined for escaping gas with a gas leak detector.
• Pressure (or vacuum) decay test, which is accomplished by pressurizing the package to a fixed pressure, shutting off the pressure and connecting a pressure transducer.

Vacuum Leak method Tester and Pressure Decay test are often used to perform package integrity (leak) testing on flexible pouches or other packages that have non-porous material surfaces and seals. These methods are highly recommended as it is affordable, sensitive, repeatable and quantitative.

More information about package Integrity Testing and relative testing instruments? please feel free to contact us or ask our package testing expert for your further package integrity testing projects.( Labthinkchina@gmail.com)

Water Vapor Permeation Analyzer W3/030

W3/030 Water Vapor Permeation Analyzer is for the water vapor permeation rate measurement of plastic films, laminated films, sheets as well as various materials used in medical and construction industries. Through water vapor permeation rate testing, the demands for control and adjust technical indexes and satisfy.

This instrument confroms to the followting standards:
ASTM E96: Standard Test Methods for Water Vapor Transmission of Materials
ASTM D1653: Standard Test Methods for Water Vapor Transmission of Organic Coating Films
ISO 2528: Sheet materials -- Determination of water vapour transmission rate -- Gravimetric (dish) method
TAPPI T464: Water Vapor Transmission Rate of Paper and Paperboard at High Temperature and Humidity

Water Vapor Permeation Analyzer Principle
A specific humidity difference is formed among the two sides of the specimen under a certain temperature. The water vapor permeates through the specimen and into the dry side. By measuring the weight changes of the cup, water vapor transmission rate and other parameters can be obtained.

Water Vapor Permeation Analyzer Technical Specifications
Test Range: 0.1~10,000 g/m²•24h (Routine)
Accuracy : 0.01 g/m²•24h
Test Temperature: 15°C ~ 55°C (Routine)
Temperature Accuracy: ± 0.1°C
Test Humidity: 10% RH~98% RH(Standard 90% RH)
Humidity Accuracy : ±1%RH
Purge Velocity: 0.5~2.5 m/s   (Note: non-standard purge velocity can be customized.)
Test Area: 33 cm² ×3
Numbers of Specimen: 3 Pieces
Specimen Thickness: ≤3mm  (Note: demands for other thicknesses can be customized.)
Specimen Size: φ74 mm
Test Chamber Volume: 15L
Gas Source: air
Gas Source Pressure: 0.6MPa
Inlet Size: φ4mm polyurethane pipe

Contact us for more detail information via Labthinkchina@gmail.com