Static bending strength test
Products
Green River Holding Co., Ltd.
“Green River only makes the best”: quality is forged by passing multiple tests
Rubber wood is a by-product of the rubber plantation industry for the production of latex. From proudly standing rubber trees, to chunks of rubber logs, to pieces of particle board materials, Green River transforms this wood material into high-value particle board through a series of processes where quality is measured and controlled at key steps along the way.
The rubber tree is tapped for latex from year 7 to 25 after which time the yield declines and the tree is felled to make way for the replanting of new trees. Wood from the felled trees is extracted for a variety of uses including the production of solid timber and engineered wood panels such as particleboard and MDF.
The quality of Green River particleboard is forged in a variety of distinctive ways:
- By laboratory testing of samples taken at different stages of the manufacturing process
- By the use of online quality assurance gauges at key stages of the manufacturing process
- By final visual inspection for surface and edge quality
- By the use of state-of-the-art manufacturing equipment
- By a Quality Management System certified to ISO 9001:2015
When the boards are freshly out of the factory, they are not immediately packaged on the spot and sent to different parts of the world. An essential step must be taken before that: quality tests!
Green River particleboard is an engineered wood panel which is produced to international standards. The Quality Management System for the manufacturing process is certified to ISO 9001: 2015. Low formaldehyde emission boards complying with several country-specific standards are available to ensure your family’s health and safety.
As particleboard is an engineered wood panel, laboratory testing is carried out on samples of board at pre-determined intervals to ensure the board properties comply with specifications and to adjust the manufacturing process as necessary. The principal tests are static bending strength, stiffness, swelling rate, screw holding strength and formaldehyde emission.
Three short video clips highlight the measurements and inspections made throughout the manufacturing process to assure the quality of finished board from Green River Panels.
Green River has made significant investments to equip its laboratories with modern apparatus for the periodic testing of board samples. One such device is the IMAL IB700 Universal Testing Machine which is designed to quickly and accurately test the mechanical properties of wood based panels to ensure compliance with relevant standards.
IMAL Autolab: https://www.imalpal.com/en/impianto.php?pr=121&cat=2&zona=8
The measure for static bending strength is Modulus of Rupture (MOR) which is the pressure that a panel can withstand when it is bent to breaking.
The measure for stiffness is the Modulus of Elasticity (MOE) which represents the ability of a board to resist deformation. This is an important measure for furniture applications; the greater the MOE, the stronger is the ability of the furniture component to resist an applied load such as books on a shelf.
Screw holding strength test of Green River’s board
Screw holding strength is measured by the IB700 Universal Testing Machine at Green River which measures the force needed to withdraw the screw.
Through panel density profile is also measured in the laboratory at Green River to ensure uniform density in the core for good screw holding strength.
Formaldehyde emission test of Green River’s board
Green River employs the perforator method for the measurement of formaldehyde emissions from its particleboard. Formaldehyde is first dissolved from the board into toluene and then dissolved in distilled water after which it is evaporated and chilled.
The sample is tested for formaldehyde content using a Merck Prove 100 Spectrophotometer. This advanced instrument from Germany provides a measure of formaldehyde emission efficiently and accurately.
After this series of tests has been conducted, Green River laboratory will issue an “examination report” of the board showing the results of each measurement.
This data is the proof that the Green River’s boards are very “healthy” and have achieved the required standards for “quality, safety and environmental protection”.
Green River has made significant investments in laboratory test equipment from leading European suppliers. Furthermore it has developed an experienced team of laboratory staff and field inspectors. Members of the team rigorously follow standard operating procedures and implement quality standards to ensure that quality particleboards are produced consistently.
An additional component of the Quality Management System at Green River is the 5S visual management system. This system consists of 5 pillars: seiri (sort), seiton (set in order), seiso (shine), seiketsu (standardize), and shitsuke (sustain). This is to ensure that the workplace is maintained in a good visual condition leading to greater efficiencies.
The Quality Management System at Green River Panels is certified to ISO 9001 2015.
Standard Operating Procedures are strictly followed for factory operations and laboratory testing. Other certifications are for products complying with CARB P2 (USA), EPA (USA), CARB NAF (USA), EPA NAF (USA), FSC (International Forest Certification) , JIS (Japan) and ELE (European).
Nowadays, as consumers are expecting more, the only strategy is to upgrade our products with technology, and continue to innovate so to adapt to the market and meet different needs of consumers. Green River will control the quality of raw materials, production management, technical R&D and quality inspection to produce high-quality products and to safeguard the new home of every consumer!
Whether it is production control or quality test, we always make our best effort to produce each board, and strive to ensure that “Green River only makes the best” on every aspect.