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Polyurethane Edge Sealing Rock Wool Sandwich Panel Machine

Aug 15, 2025

The polyurethane edge sealing rock wool sandwich panel machine is a highly automated composite panel manufacturing system, specifically designed for producing building sandwich panels with multiple properties such as fire resistance, insulation, and sound insulation.

Polyurethane Edge Sealing Rock Wool Sandwich Panel Machinesandwich panel machine

This rock wool sandwich panel production line combines the excellent sealing performance of polyurethane and the fire resistance of rock wool, and through precision controlled production processes, produces high-performance building materials widely used in industrial plants, cold storage, clean workshops, and other places.

Core component modules

  • Raw material pretreatment system
    Rock wool processing unit: equipped with high-precision cutting device, can cut rock wool into specific thickness and width according to design requirements
    Metal panel processing line: including unwinding machine, cleaning machine, leveling machine, and laminating machine, to ensure that the surface of the panel is flat and flawless
    Polyurethane raw material storage tank: a temperature controlled raw material storage system that ensures the stability and reactivity of chemical raw materials

  • Automated composite production line
    Double track continuous foaming machine: the core equipment adopts precise temperature control and pressure control system to ensure uniform foaming of polyurethane on the edge of rock wool
    3D positioning system: high-precision sensors monitor the position of the board in real-time, ensuring accurate alignment of each layer of material
    Gradient pressure device: automatically adjusts pressure according to different stages of the composite process to optimize product density

Production process flow

  • Panel pretreatment: After cleaning and leveling, the metal panel enters the laminating section

  • Lower layer composite: The first layer panel is preliminarily bonded to the rock wool substrate under precise control

  • Polyurethane edge sealing: A dedicated nozzle injects polyurethane raw material along the edge of rock wool, which instantly foams and solidifies under high pressure environment

  • Upper layer composite: The top panel is precisely pressed together to form a "sandwich" structure

  • Curing and shaping: The board enters the constant temperature curing zone to complete the final curing process

  • Fixed length cutting: high-precision slitting according to order requirements

Application advantages

  • Excellent sealing performance: Polyurethane edge sealing completely solves the problems of water seepage and ventilation at the edges of traditional rock wool boards

  • Balancing fire prevention and insulation: rock wool core material provides fire protection, while polyurethane edge enhances insulation effect

  • Structural strength improvement: Polyurethane edge sealing forms an overall frame structure, increasing bending strength by more than 40%

  • High installation efficiency: precise size control makes on-site installation more convenient and fast

  • Long service life: The enclosed edge structure effectively prevents the core material from absorbing moisture and aging

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