Belt Type Sandwich Panel Line

Sinowa is a well-known manufacturer and technical service provider of high-end polyurethane insulation board production lines and various high-performance cold roll forming machine in China. Our main products include polyurethane double-sided color steel sandwich panel production line, polyurethane and phenolic soft facing insulation panel production line and high-efficiency roll forming machines.

Sinowa has invested outstanding efforts in belt type sandwich panel line, This is why our products are more efficiency, quality, automatic control technology, environmental protection, energy consumption indicators and the appearance and safety protection are comprehensively leading, Some subversive design changes in many major technical points,these major innovations make our products excellent in price/performance and user experience.

Sinowa is committed to the development and manufacturing of high-end and high-efficiency belt type sandwich panel line. Our sandwich panel production lines are leading the way in efficiency, automatic control, human-computer interaction, environmental protection and energy consumption. Using system integration and bus control technology, it realizes the automatic integrated linkage control of the entire production line, and can achieve remote interactive communication, which has the world-class level and a comprehensive leading high-performance production line in the market.

Belt type sandwich panel line is a fully automated continuous production system designed for manufacturing high-performance composite sandwich panels, widely adopted in the modern construction and insulation material industries. Differing from traditional intermittent pressing equipment, this production line relies on a precision double-belt transmission and pressing structure to realize uninterrupted compounding, curing and shaping of panel raw materials. It can integrate multiple production processes including material unwinding, surface forming, adhesive coating, core material laying, constant pressure thermosetting, fixed-length cutting and automatic stacking in one continuous workflow. The equipment features outstanding operational stability, flexible production adaptability and consistent product molding quality, capable of processing various surface sheet materials and lightweight core materials to produce diversified sandwich panels with excellent thermal insulation, sound insulation and structural strength. As a core intelligent manufacturing device for building composite materials, it effectively solves the problems of low efficiency, unstable bonding effect and poor panel flatness existing in traditional panel production modes, laying a solid foundation for large-scale and standardized production of building insulation panels.

The overall structural design of the belt type sandwich panel line follows a modular and integrated layout concept, with all functional units closely connected and precisely synchronized to ensure the continuity and fluency of the entire production process. The whole system is composed of multiple core functional modules, covering raw material feeding and preprocessing, roll forming, adhesive application, core material assembly, belt pressing and curing, post-processing molding and automatic discharging. Each independent module is equipped with an adaptive adjustment mechanism, which can independently adjust operating parameters according to different raw material characteristics and panel design requirements without affecting the overall production rhythm. The transmission system adopts high-precision synchronous driving components, which can maintain stable operating speed and uniform transmission tension during long-term continuous operation, avoiding material deviation and wrinkling. In addition, the overall mechanical structure is optimized for wear resistance and pressure resistance, effectively reducing equipment vibration and operational errors in the production process, ensuring that each batch of panels maintains consistent dimensional accuracy and structural uniformity, and greatly improving the overall yield of finished products.

Raw material pretreatment and feeding is the initial key link of the belt type sandwich panel line production process, which determines the foundation of subsequent panel molding quality. This link mainly completes the unwinding, leveling and finishing of upper and lower surface sheets, as well as the fixed-length cutting and orderly laying of core insulation materials. The sheet unwinding unit adopts a continuous unwinding structure, which can realize non-stop coil replacement to avoid production interruption caused by raw material switching. After unwinding, the metal or composite surface sheets will pass through a multi-group leveling mechanism to eliminate internal stress and surface unevenness generated during coil winding, ensuring the flatness of the base material before forming. For core materials such as mineral wool and foam materials, the equipment is equipped with a precision cutting and sorting device, which can cut the core materials into uniform specifications and arrange them neatly between the upper and lower sheets. The entire feeding process is automatically controlled by the system, with accurate material conveying metering and stable feeding speed, effectively avoiding material accumulation, deviation and missing laying problems, and creating uniform and stable processing conditions for subsequent composite pressing.

Roll forming and adhesive coating are two essential intermediate processes that directly affect the structural performance and bonding firmness of sandwich panels. After pretreatment, the flat surface sheets enter the roll forming unit composed of multiple groups of precision forming rollers. Through gradual rolling and shaping, the sheets are processed into customized contour structures required for wall and roof panels, with smooth forming lines and accurate structural dimensions. All forming rollers are made of high-hardness wear-resistant materials, which can maintain long-term forming accuracy and reduce replacement and maintenance frequency. After forming, the inner surfaces of the upper and lower sheets will enter the automatic adhesive coating station. The precision gluing system adopts a uniform spraying and scraping integrated mode, which can evenly coat high-performance adhesive on the entire bonding surface, with controllable glue amount and no local accumulation or missing coating. The adjustable gluing structure can adapt to different sheet thicknesses and panel types, ensuring that the adhesive layer maintains uniform thickness and good permeability, which can significantly enhance the bonding tightness between the surface sheet and the core material, and prevent delamination and cracking of panels in long-term use.

The double-belt pressing and thermosetting system is the core functional part of the entire belt type sandwich panel line, undertaking the key tasks of panel composite molding and adhesive curing. The system consists of upper and lower endless steel belt conveyor structures, which can provide continuous and uniform static pressure for the composite panel in the full-length operation range. Different from intermittent pressing equipment, the belt pressing structure realizes dynamic continuous pressing, so that the panel can complete lamination and bonding while moving forward at a constant speed. The internal heating zone adopts multi-stage zoned temperature control design, forming a gradual temperature gradient from low temperature preheating to high temperature curing. This gradual heating mode can effectively avoid the quality defects such as internal bubble and uneven curing caused by rapid temperature rise of the adhesive. The synchronous operation of constant pressure and constant temperature enables the adhesive to fully react and cure, making the layered structure of the panel closely integrated. Meanwhile, the belt tension and pressing gap can be automatically adjusted according to different panel thicknesses, ensuring that panels of various specifications can obtain ideal flatness and structural compactness after molding.

Precision post-processing and shaping processes further optimize the finished panel quality and ensure product dimensional standardization. After completing thermosetting and preliminary shaping through the belt pressing system, the semi-finished continuous panel will enter the trimming and cutting unit. The automatic edge trimming device can accurately trim the irregular edges on both sides of the panel to ensure consistent panel width and neat edge structure. The fixed-length cutting mechanism adopts high-precision servo control, which can cut the continuous panel into customized lengths according to production settings, with smooth cutting sections and no burrs. After cutting, the panels will pass through the cooling and shaping channel to slowly dissipate internal heat, eliminating structural deformation caused by thermal expansion and cold contraction, and stabilizing the overall flatness and mechanical properties of the panels. In addition, the system is equipped with a defect detection function, which can automatically identify unqualified products such as uneven bonding and dimensional deviation in the production process, realizing real-time screening of defective products and effectively improving the overall qualification rate of finished panels.

The automatic control and intelligent operation system endows the belt type sandwich panel line with excellent production flexibility and operational intelligence. The entire production process is centrally controlled by an integrated intelligent system, which can uniformly adjust and monitor key parameters such as operating speed, pressing pressure, heating temperature, gluing amount and cutting size of each functional module. The system supports parameter presetting and one-key switching of different panel production modes, enabling rapid conversion between different material combinations and product specifications, which greatly shortens the production debugging cycle. Equipped with real-time data monitoring and fault self-diagnosis functions, the equipment can automatically record production operation data, remind abnormal operating conditions in real time, and provide corresponding fault prompt information, facilitating timely maintenance and debugging by operators. The highly automated control mode reduces manual intervention links, not only reduces labor operation errors and production labor costs, but also ensures the stability and repeatability of the production process, realizing standardized and intelligent batch production of sandwich panels.

With its superior continuous production performance and stable product quality, the belt type sandwich panel line has become the mainstream production equipment in the field of building energy-saving insulation materials. Its modular structure design and intelligent control system enable the equipment to adapt to the diversified production needs of different application scenarios, covering industrial factory buildings, civil buildings, cold storage insulation and other fields. The continuous belt pressing process effectively improves the production efficiency of sandwich panels, realizing large-scale continuous production that traditional equipment cannot achieve, while ensuring that each finished panel has excellent thermal insulation, wind resistance and structural stability. With the continuous upgrading of building energy-saving standards and composite material technology, the belt type sandwich panel line is also constantly optimized in structural design and functional configuration, gradually developing towards higher intelligence, higher production efficiency and stronger product adaptability, providing reliable equipment support for the high-quality development of the building composite material industry.