Waterproof Breathable Membrane Production Line Equipment

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Extrusion cast film production line:

Principle: The raw materials such as PE modified breathable particles containing inorganic fillers are melted and extruded through a screw extruder at high temperature, formed through a hanger-type extrusion mold, and then stretched by a roller at a high ratio to form a breathable film with sub-nanometer micropores.

Equipment composition: including plastic pellet dehumidification and drying device, single screw extruder, quick-change filter, metering pump, hanger-type mold, cast film forming table, longitudinal stretching machine, cooling and shaping device, trimming recovery mechanism, corona device, traction and conveying equipment, tension feedback system and winding device.

Product features and applications: The produced PE breathable film has the characteristics of good dispersibility and uniform plasticization, and is widely used in the sanitary industry, such as baby diapers, women's sanitary products, etc.

Film blowing technology production line:

Principle: After the film blank is extruded, it is completed in one go through the processes of blowing, cooling, traction, and winding. The film blank forms a microporous structure during the blowing process to achieve a breathable effect. At the same time, due to the characteristics of the polymer material itself and the surface treatment, it has a waterproof function.

Equipment composition: mainly extruder, film blowing head, cooling device, traction device, winding device, etc.

Product features and applications: For example, Hengtian Jiahua's high-end breathable film production line adopts film blowing technology, the product thickness is thin, the breathability is good, and it is widely used in high-end medical protection and hygiene fields, such as surgical gowns, diapers, etc.

Co-extrusion composite film production line:

Principle: Polymer materials with different properties are co-extruded through multiple extruders to form a composite film with a multi-layer structure, of which at least one layer is a material with waterproof and breathable functions, such as TPU, etc., combining the advantages of each layer of materials to achieve waterproof and breathable and other specific performance requirements.

Equipment composition: It consists of multiple extruders, co-extrusion molds, composite devices, cooling and shaping equipment, traction and winding equipment, etc.

Product features and applications: It can produce composite films with multiple functions, such as TPU composite fabrics for clothing and shoes, sports and fitness equipment, inflatable toys, etc., which have waterproof, breathable, wear-resistant, and aging-resistant properties.

Waterproof and breathable membrane production lines of different materials

PE waterproof and breathable membrane production line: PE breathable rubber particles are used as raw materials and produced by extrusion casting. The equipment is as described in the above extrusion casting production line.

TPU waterproof and breathable membrane production line: high-speed extrusion calendering and casting molding are adopted. The production line has an independently designed segmented screw structure, which is suitable for high shear stress TPU extrusion molding and stable extrusion volume; special three-roller design, the roller material is suitable for cooling and molding of TPU materials, and the thickness of the finished product is well controlled; high-precision temperature-controlled tempering rollers reduce shrinkage and other adverse factors; specially designed automatic cutting and changing rolls, highly automated.

E-PTFE waterproof breathable membrane production line: The raw materials are polytetrafluoroethylene, etc. The production process includes basic steps such as raw material mixing, melt extrusion, and calendering. Due to the particularity of e-PTFE materials, high requirements are placed on the precision, temperature control, and pressure control of production equipment. Special stretching and other processes are also required to form a microporous structure to achieve a breathable effect.