Tie-Barless Clamping Extrusion Blow Molding Machine, 90kN Force

Tie bars are the first thing a maintenance team learns to hate on an older blow molding machine. They limit mould size, block scrap collection and turn a mould change into a two hour job. The MP70D-2 uses a tie-barless clamping system in which force is transferred directly to the middle of the back platen and mirrored forward through alignment rods.

The practical result is that the mould area is open on both sides. Operators slide a mould in from the front, locate it on the positioning holes and clamp, and scrap drops straight into a bin underneath instead of onto the tie bars. On a line running several bottle sizes per week, that difference pays for itself within months.

• Tie-barless clamping: Direct-acting cylinders push force to the platen centre, so no tie bars obstruct mould loading or scrap fall
• 90 kN clamping force: High force for its frame size, holding parting lines closed on thin-wall 1L HDPE parisons
• Positioning holes for quick change: Moulds locate on dowel holes and clamp in minutes rather than hours
• Open drop zone: Scrap and flash collect in a clear bin below the platens, keeping the floor cleaner and the operator safer
• Adjustable platen stroke: 180 to 480 mm opening covers small 10 ml moulds and full 1L two cavity tooling
• Direct force path: Less mechanical linkage means fewer wear parts and more repeatable clamp pressure over long runs

• Plants changing bottle sizes several times per week
• Contract blow moulders running short order batches
• 1L HDPE lubricant and chemical bottle production
• Thin-wall containers where flash control is critical
• Job shops needing fast tooling turnaround

A: With pre-set mould plates, a two person team completes the change in 30 to 45 minutes including die head adjustment and first article check. The absence of tie bars is the main reason: there is nothing to slide the mould past and no need to remove a platen extension.

A: Force is closed through the platen structure itself, so deflection at the parting line stays within the tolerance specified for the 430 x 350 mm mould area. We supply deflection figures for a 90 kN load with every machine so buyers can verify the design.

A: Yes. Proportional hydraulic control lets the operator set clamp pressure per recipe, so a 10 ml vial mould is not subjected to the same force as a 1L bottle mould. This protects small tooling and extends mould life.

Machines are shipped on a reinforced wooden pallet with the platens blocked to prevent movement, then enclosed in a plywood case. Delivery is 25 to 35 working days after deposit from Ningbo. CE marking, ISO9001:2008 production control, 12 month warranty, English manuals and remote commissioning support are included, with optional on-site installation.