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826
[Page extract]
Introduction to elongation and recovery testing
In industries working with textiles, rubber, elastomers, and flexible plastics, these properties are directly linked to product reli
827
[Page extract]
Relevant standards for lap shear under compression
International testing standards provide consistency and repeatability for adhesive strength tests, including those involving compressive loading. The following standards are particularly relevant:
828
[Page extract]
Understanding compressive deformation
Compressive deformation is the change in shape or size of a material when it is subjected to compressive forces. This can involve a reduction in length, thickness, or volume when an object is pressed or squeezed.
829
[Page extract]
Mecmesin equipment for insertion and withdrawal testing
Mecmesin provides high-precision systems for measuring insertion and withdrawal forces across a wide range of components.
Capabilities include:
830
[Page extract]
Applications and specimen types
Torque testing is used across a broad range of packaging designs, including:
831
[Page extract]
Applications and importance of breaking torque testing
Applications across sectors
Breaking torque testing plays a central role in confirming that products are not only functional, but also durable and safe throughout their lifecycle.
832
[Page extract]
Applications in demanding sectors
The strip method is used wherever fabric integrity under load is critical:
833
[Page extract]
Key applications of pull-off and pull-out testing
The versatility of these tests means they are used across a broad range of products and industries.
834
[Page extract]
Benefits and limitations of compressive shear testing
Advantages
High precision - accurate measurement of shear strength under controlled compression
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835
[Page extract]
Standard test methods for floating roller peel
Several international standards define procedures for floating roller peel testing:
836
[Page extract]
ISO 34-2 standards explained
ISO 34-2 specifies the Delft tear test procedure for vulcanised or thermoplastic rubber, ensuring testing is carried out under consisten
837
[Page extract]
Test methods for textiles and other materials
Flexible materials such as textiles and elastomers require test methods adapted to their specific mechanical behaviour.
838
[Page extract]
Maintenance and calibration of tear testers
To maintain accuracy and extend service life, regular maintenance and calibration are essential.
839
[Page extract]
Standards in torque testing
Mecmesin systems are designed to comply with widely recognised international standards.
840
[Page extract]
Understanding torque testing
Types of torque testing in packaging
Several torque measurements are relevant to closure performance:
841
Case study
Torsion spring testing
Customised engineering example
Unlike most compression and tension springs, torsion springs are produced in a variety of forms with differing leg positions.
842
Case study
Diamante pull-off test
Requirement
The customer was a supplier to major UK clothing retailer Marks & Spencer, who stipulate that all fasteners and attachments must be tested to failure.
843
Case study
Seat belt locking device test
Requirement
The customer requested a system to measure the force required to release the locking mechanism of a car seat-belt whilst it is under tension.
844
Case study
Card and paper crease line testing
Customised engineering example
A packaging production company needed to test the crease force of the ink-coated card used in their fully-enclosed cartons.
845
[Page extract]
ASTM F2458-05
This test method covers a means for comparison of wound closure strength of tissue adhesives used to help secure the apposition of soft tissue.
846
Case study
Medical suture device calibration system
Requirement
A number of devices which 'crimp' a curved needle to a fine medical thread needed to be tested. The crimp force was applied horizontally pulling a lever on the device.
847
[Page extract]
ASTM F2258-05
This test method is intended to provide a means for comparison of the adhesive strengths of tissue adhesives intended for use as surgical adhesives or sealants, or both, on soft tissue.
848
[Page extract]
BS EN ISO 19011:2011
Provides the fundamental knowledge needed for auditing management systems and has been expanded to reflect modern thinking and the intricacies of auditing multiple management system standards (MSS).
849
Case study
Metal bottle cap on glass pull-off test
Customised engineering example
Gripping the base of a glass bottle for a tensile test can be challenging due to the slippy surface and contoured shape.
850
Case study
Bow attachment pull-off test on clothing
Requirement
The customer was a supplier to major UK clothing retailer Marks & Spencer, who stipulate that all fasteners and attachments must be tested to failure.