Sandwich Panel Production Technologies
sandwich panel line
Ongoing and discontinuous panel producing approaches
Above the very last fifty a long time, sandwich panels have progressed as a specifically inexpensive implies of design. The combined supplies are usually two pores and skin layers (rigid metallic dealing with material or flexible skins this kind of as thin aluminum, paper or membranes, dependent on the application) and a core insulating substance.
There are fundamentally two panel manufacturing systems: ongoing and discontinuous. In the continuous process, all the utilised supplies are processed jointly, and the entirely shaped panel is lower to the sought after length with out halting the line. In the discontinuous method, the components are processed independently this means the facings are fashioned and reduce to the sought after size and then assembled together in a press where the foam is injected.
The discontinuous approach has a lower degree of productivity that are not able to be in comparison with that of the continuous 1. It is employed nowadays for goods with styles that do not let the ongoing procedure, or when the generation fee needed does not justify expenditure in a constant line.
A ongoing line has an common pace of about 14 meters for every minute in generation of medium panel thickness (forty-50 mm) with metal facings. With one particular 8-hour change a day over 220 days in a year, generation quantities to about one,180,000 meters per yr, assuming an performance of eighty p.c. A discontinuous line with a double press 12 meters lengthy, beneath the exact same circumstances, can reach manufacturing of about one hundred,000 meters for each year when working one particular change for every day.
Steady panel manufacturing line
A normal continuous line is produced up of the following a few sections:
• exterior levels processing part
• insulating substance processing section
• panels dealing with segment
In a common scenario of a sandwich panel with both exterior surfaces in sheet steel and an insulating main in polyurethane rigid foam, the very first section starts off with the sheet decoilers and continues with all the tools for forming the two sheets into the preferred shape. The panel could be a panel for walls or for roofs. Sandwich panels with adaptable layers (aluminum, glass fiber sheets, asphalt paper) are not rollformed. Both surfaces of the closing panels are totally flat. The surfaces are pre-heated to the temperature needed by the approach (typically amongst 40 and 65 C) and then the insulating substance is well prepared.
In the situation of polyurethane (PU-PIR) panels, the foam is generated by starting up from the necessary chemical elements metered and combined collectively in the foaming device. The resulting liquid combination is evenly distributed over the reduce metal sheet. The metallic facings, foam and attainable facet strips or gaskets are pressed inside of the double conveyor or continuous press. This machine has to sustain the metal sheets separated at the desired length while the foam expands.
In this way, the panel will have the wanted thickness and condition after the foam has expanded and fully remedied. The most essential parameter to ensure a great outcome from the method is the temperature control of the chemical factors, metal sheets and push region. If the insulating content is mineral wool or expanded polystyrene, it is inserted and glued to the metallic sheets in the type of mattresses that have been minimize and shaped to the right thickness prior to insertion.
Temperature is once more a crucial parameter, this time for the reaction of the glue, i.e. for excellent adhesion of the internal board to the exterior layers. After currently being formed, the panel is reduce, cooled, stacked and wrapped with a plastic movie. These very last operations can be executed immediately or manually, depending upon the automation stage that the consumer demands for their production line.
Ongoing and discontinuous panel producing approaches
Above the very last fifty a long time, sandwich panels have progressed as a specifically inexpensive implies of design. The combined supplies are usually two pores and skin layers (rigid metallic dealing with material or flexible skins this kind of as thin aluminum, paper or membranes, dependent on the application) and a core insulating substance.
There are fundamentally two panel manufacturing systems: ongoing and discontinuous. In the continuous process, all the utilised supplies are processed jointly, and the entirely shaped panel is lower to the sought after length with out halting the line. In the discontinuous method, the components are processed independently this means the facings are fashioned and reduce to the sought after size and then assembled together in a press where the foam is injected.
The discontinuous approach has a lower degree of productivity that are not able to be in comparison with that of the continuous 1. It is employed nowadays for goods with styles that do not let the ongoing procedure, or when the generation fee needed does not justify expenditure in a constant line.
A ongoing line has an common pace of about 14 meters for every minute in generation of medium panel thickness (forty-50 mm) with metal facings. With one particular 8-hour change a day over 220 days in a year, generation quantities to about one,180,000 meters per yr, assuming an performance of eighty p.c. A discontinuous line with a double press 12 meters lengthy, beneath the exact same circumstances, can reach manufacturing of about one hundred,000 meters for each year when working one particular change for every day.
Steady panel manufacturing line
A normal continuous line is produced up of the following a few sections:
• exterior levels processing part
• insulating substance processing section
• panels dealing with segment
In a common scenario of a sandwich panel with both exterior surfaces in sheet steel and an insulating main in polyurethane rigid foam, the very first section starts off with the sheet decoilers and continues with all the tools for forming the two sheets into the preferred shape. The panel could be a panel for walls or for roofs. Sandwich panels with adaptable layers (aluminum, glass fiber sheets, asphalt paper) are not rollformed. Both surfaces of the closing panels are totally flat. The surfaces are pre-heated to the temperature needed by the approach (typically amongst 40 and 65 C) and then the insulating substance is well prepared.
In the situation of polyurethane (PU-PIR) panels, the foam is generated by starting up from the necessary chemical elements metered and combined collectively in the foaming device. The resulting liquid combination is evenly distributed over the reduce metal sheet. The metallic facings, foam and attainable facet strips or gaskets are pressed inside of the double conveyor or continuous press. This machine has to sustain the metal sheets separated at the desired length while the foam expands.
In this way, the panel will have the wanted thickness and condition after the foam has expanded and fully remedied. The most essential parameter to ensure a great outcome from the method is the temperature control of the chemical factors, metal sheets and push region. If the insulating content is mineral wool or expanded polystyrene, it is inserted and glued to the metallic sheets in the type of mattresses that have been minimize and shaped to the right thickness prior to insertion.
Temperature is once more a crucial parameter, this time for the reaction of the glue, i.e. for excellent adhesion of the internal board to the exterior layers. After currently being formed, the panel is reduce, cooled, stacked and wrapped with a plastic movie. These very last operations can be executed immediately or manually, depending upon the automation stage that the consumer demands for their production line.
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