PE chemical foam gasket production line: This equipment adopts a 120-30:1 single-screw extruder, hydraulic automatic screen changer, adjustable mold, vertical three-roll calender, three-in-one roller constant temperature machine, stainless steel cooling bracket with electrostatic treatment device, alloy edge trimmer with adjustable width, rubber roller traction machine, and double-station air shaft winding machine. The entire line uses: Omron intelligent temperature controller (Japan), Schneider low-voltage electrical components, and domestically renowned brand frequency converters. The produced PE foam rolls are mainly used for sound and heat insulation in automotive doors, trunk fenders, etc., and can also be used as linings for bags and sealing gaskets for cosmetic bottle caps. Product width is generally 700-1000 mm, and thickness is 0.5-2 mm.
Key Features of the Equipment
Dedicated Foaming Extrusion System
Equipped with a specially designed foaming screw and a barrel with a large length-to-diameter ratio, ensuring thorough and uniform mixing of the foaming agent and PE melt, and providing stable pressure and temperature to control the timing of decomposition and foaming.
Precision Temperature Control is Key
Extremely stringent temperature control requirements are placed on each section of the extruder and the die. Precise "low-temperature extrusion" must be achieved to ensure that the foaming agent does not decompose prematurely before reaching the die exit, and that it fully foams instantly after exiting, forming uniform and fine cells.
Highly Synergistic Traction System
Foamed products have low strength and are easily stretched and deformed; therefore, the traction system must be perfectly synchronized with the extrusion speed to ensure that the gasket moves smoothly under no tension or constant micro-tension, guaranteeing product dimensional stability and preserving the cell structure.
Core Advantages of the Equipment:
Superior Cell Structure:
The equipment can stably produce high-quality gaskets with high closed-cell ratio and uniform, fine pores. This results in excellent cushioning, sealing, sound insulation, and thermal insulation properties.
High Production Efficiency and Cost-Effectiveness:
Continuous production line with high output. Through physical foaming (optional) or precise control of chemical foaming agent dosage, material density can be significantly reduced, achieving raw material savings and lower unit costs.
Flexible Product Specifications:
By changing the die head and adjusting process parameters, gaskets of different thicknesses, widths, and densities can be flexibly produced to meet diverse market demands.
Smooth Product Surface and Stable Quality:
Precise temperature control and a unique shaping device ensure that the foamed gaskets have a smooth and flat surface, small thickness tolerance, uniform performance, and reliable quality.
Polyethylene (PE) foam sheets have completely independent pores, moderate hardness, good cushioning, excellent sealing effect, good chemical resistance and water resistance, excellent moisture resistance and vacuum retention, and a clean surface with a pearly luster. They are widely used in various pharmaceutical/oil bottle cap gaskets, food bottle cap gaskets, cosmetic bottle cap gaskets, and wine bottle cap gaskets, with a broad market prospect and considerable profit margin.
