Polymer Film Waterproofing Membrane Production Line

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The polymer film waterproofing membrane production lin is a professional equipment used to produce polymer self-adhesive waterproofing coils. The following is its relevant introduction:

Main equipment composition

Extruder: It is one of the core equipment of the production line, which is used to heat and melt the polymer material and extrude it into the sheet part of the coil. According to production requirements and the characteristics of polymer materials, single-screw extruder or twin-screw extruder can be selected. Twin-screw extruder has better mixing and plasticizing effects and higher production efficiency, and is suitable for the extrusion of a variety of polymer materials 2.

Gluing device: Responsible for evenly coating the self-adhesive glue on the polymer sheet. Common gluing methods include scraper coating, roller coating, extrusion coating, etc. For example, scraper coating can control the thickness and uniformity of the glue layer by adjusting the gap and angle between the scraper and the sheet; roller coating uses a coating roller to transfer the glue to the surface of the sheet, which is suitable for large-area uniform coating 6.

Composite device: If the polymer self-adhesive waterproofing coil needs to be composited with other materials, such as fabric reinforcement layer, isolation film, etc., a composite device is required. The composite device can fit different materials tightly together under certain temperature, pressure and speed conditions to enhance the performance of the coil.

Cooling system: used to cool and shape the extruded polymer sheet and the coated coil to ensure the dimensional stability and physical properties of the coil. Common cooling methods include air cooling and water cooling. Air cooling uses a fan to blow air to cool the surface of the coil, while water cooling allows the coil to pass through a cooling water tank or cooling roller for cooling.

Reeling device: Automatically reel the finished polymer self-adhesive waterproof coil for subsequent storage, transportation and use. The reeling device needs to have a tension control function to ensure that the coil maintains appropriate tension during the reeling process to avoid wrinkles, deformation or excessive stretching of the coil.

Production process

Raw material preparation: Precisely measure and mix polymer materials (such as PVC, PE, EVA, etc.) and other auxiliary raw materials (such as plasticizers, stabilizers, fillers, etc.) according to a certain formula ratio. Extrusion molding: The mixed raw materials are added to the extruder, heated, melted, and extruded to form a continuous polymer sheet.

Gluing: The extruded polymer sheet enters the gluing device, and self-adhesive rubber asphalt adhesive or other types of self-adhesive adhesive are evenly coated on its surface.

Compounding and cooling: If a composite fabric reinforcement layer or isolation film is required, the composite operation is performed on the glued sheet, and then cooled and shaped through the cooling system.

Rewinding: The cooled polymer self-adhesive waterproofing roll is rewound through the rewinding device to form a finished roll.

Production technology features

High degree of automation: The advanced production line adopts a PLC control system to achieve precise control and automated operation of each production link such as extrusion, gluing, compounding, and rewinding, reducing manual intervention and improving production efficiency and product quality stability.

High production efficiency: The production line is designed to have a fast production speed and can meet the needs of large-scale production. For example, the production speed of some high-speed production lines can reach tens of meters per minute or even higher.

Good product quality: Through precise temperature control, extrusion process parameter optimization, glue coating uniformity control and other technical means, the produced polymer self-adhesive waterproof membrane has good physical properties, bonding properties and waterproof properties. For example, the tensile strength, elongation at break, impermeability and other indicators of the product can meet the requirements of national standards and industry standards.

Application field

Polymer self-adhesive waterproof membrane is widely used in roof waterproofing, basement waterproofing, bathroom waterproofing and other parts in construction projects, as well as waterproofing treatment of infrastructure projects such as subways, tunnels, bridges, and water conservancy.