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Foam Plastics Flammability Tester (Electric Welding Spark Method) – New GB 8624 Standard

This test is applicable to various rigid and flexible foam plastics, such as polystyrene, polyethylene, polyurethane, phenolic resin, and other materials. Under laboratory conditions, it evaluates the ignition performance of horizontally positioned foam samples by subjecting them to impacts from electric welding sparks. Test principle: Leveraging the tendency of metals to produce spatter during welding, a welding machine generates continuous electric sparks, with the intensity carefully controlled to ensure consistent stability. These sparks serve as an ignition source, continuously impinging on the sample exposed within a defined test area, while the sample’s response to the flame is observed to assess its ignition characteristics under the influence of electric welding sparks.

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Foam Plastics Flammability Tester (Electric Welding Spark Method) – New GB 8624 Standard

Description

Product Introduction:

This test is applicable to various rigid and flexible foamed plastics, such as polystyrene, polyethylene, polyurethane, phenolic resin, and other materials. Under laboratory conditions, an electric welding spark is used to impact a horizontally positioned foam sample in order to determine its ignition characteristics.

Principle of the test:

Based on the tendency of metals to generate spatter during welding, a welding machine is used to produce continuous electric sparks. By controlling the intensity of these sparks and maintaining their steady, uninterrupted flow, they serve as an ignition source that continuously impinges upon specimens exposed within a controlled area. The specimens’ response to the flame is then observed to assess their flammability under the influence of electric welding sparks.

Technical Specifications:

Parameter Category	Parameter content
Overall composition	It consists of a combustion chamber, an electric‑arc ignition system, a base, a sample holder, and a tray, and is equipped with a touch‑screen control.
Combustion Chamber – Structural Observation	A heat-resistant glass window is installed on the front of the enclosure.
Combustion Chamber – Internal Specifications	Internal dimensions comply with the corresponding standard.
Combustion Chamber – Mounting Structure	The entire assembly is mounted on a base, which houses the controller.
Combustion Chamber – Ventilation Method	Natural ventilation is achieved through the opening at the bottom of the enclosure.
Combustion Chamber–Exhaust Gas Structure	A smoke vent is installed at the top to exhaust combustion fumes.
Components of the electric welding ignition system	It includes a welding machine, welding wire, a welding torch, steel plates, and a micro‑motor; the welding machine is housed in a small enclosure on one side of the combustion chamber, which is integrally welded to the combustion chamber.
Control component composition	Equipped with a power switch, a test switch, a micro-motor speed adjustment knob, and a timing device.
Power switch function	Main power control switch for the entire test setup
Test switch function	Initiation and Termination of the Control Experiment
Speed control knob function	Adjust the micro-motor speed to control the steel plate’s running speed.
Timing Device Performance	Sustainable recording of test duration, with a display accuracy of 1 second and a minimum display resolution of 1 second.

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FAQs

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We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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Foam Plastics Flammability Tester (Electric Welding Spark Method) – New GB 8624 Standard

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