Double Layer Extrusion Blow Molding Machine for Plastic Bottles

The MP70FS double layer extrusion blow molding machine is engineered for continuous production of plastic bottles with a co-extruded two-layer wall. The parison combines a presentable outer skin with a functional inner layer, producing bottles that resist chemicals, light, and daily mechanical stress.

Equipped with a double station shuttle clamping system and a 70 mm screw, this extrusion blow molder keeps cycles fast and parison wall thickness uniform from bottle to bottle, delivering consistent weight, clean parting lines, and reliable downstream filling.

• Two-Layer Parison Co-Extrusion: Dual extruders feed a shared crosshead, so each bottle develops a distinct inner and outer layer that may differ in colour, material, or barrier function.
• Double Station Shuttle Clamping: The toggle-clamping frame and premium linear guides shorten dry cycle time and hold platen motion stable for round-the-clock bottle output.
• 70 mm Screw with 24:1 L/D: A 90 kg/h plasticizing capacity for HDPE keeps melt quality high and output steady even during long, uninterrupted runs.
• Uniform Wall Thickness Control: Dynamic microcomputer parison programming maintains even bottle wall thickness, cutting scrap and material waste.
• Clean Neck Finish and Flashing Control: Down-blowing calibration trims the bottle neck automatically, while an in-cylinder liquid control valve removes flashes at the parting line.
• Centralized Microcomputer System: One controller manages sequencing, temperatures, and parison control, with memory for forty mould recipes.
• Safety-Compliant Guarding: Category-4 safety door interlocking with dual limit sensors instantly halts clamping motion when a guard is opened.

This double layer blow molding machine is widely used for personal care and household bottles such as shampoo, detergent, lotion, and cosmetic packaging, where a decorative surface and a protective inner layer work together.

It also suits agricultural and industrial bottle production, including agrochemical and lubricant bottles that demand chemical resistance and dependable sealing.

Q: How does double layer extrusion improve plastic bottles?
A: Double layer extrusion forms a single parison with an outer and an inner layer, so bottles can combine a glossy or coloured surface with a chemical-resistant or recycled inner layer, improving appearance, protection, and material cost control.

Q: What screw size does this bottle blow molding machine use?
A: It uses a 70 mm screw with a 24:1 L/D ratio and a plasticizing capacity of about 90 kg/h for HDPE, which supports steady high-speed bottle output.

Q: Can the machine run recycled material?
A: Yes. The inner layer may be produced from recycled or regrind material while the outer layer keeps a virgin, presentable surface, an efficient route to cost reduction.

Q: What bottle volume is supported?
A: The MP70FS handles hollow products up to 10 L with one to four die heads, covering a broad range of bottle and container sizes.

Every unit is packed in a standard export package with an optional wooden pallet or wooden case for long-distance sea freight. The machine is CE and ISO9001:2008 certified and is supported by remote commissioning, operator training, wearing-part supply, and responsive after-sales service worldwide.