Preform tooling

Injection tooling for the manufacturing of PET preforms: solutions for life

As the world’s second-largest mold maker, SIPA is able to deliver global tooling programs for new molds or mold conversions from single to 200 cavities. To ensure top quality, every SIPA mold is tested before shipping on dedicated XFORM machines. Over the years we have developed extensive knowledge of many different applications, even the most specialised ones, from narrow necks to wide mouths and thick walls.

HIGHLIGHTS

Innovative design of injection components: less wear, lower risk of flashing, better cooling, excellent quality ofparting line
Easier filling ability of injection mould thanks to our XMOULD technology which reduces the friction and improves cycle time
Optimized cooling layout to support fast cycle times and save energy costs
Patented hot runner technology to minimize hot runner downtime
11millions lif cycle guaranteed without need of components refurbishing with LongLife solution
Special hot runners design to reduce material stress and working pressures

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DOWNLOAD PRODUCT BROCHURE

XMOULD is an innovation from Sipa which allows reduction of friction between molten PET and molding surface of the injection stacks during injection phase, allowing production of thin-wall performs with length on wall thickness ratio above 50 (L/t in the range of 50 to 55 possible), so better/optimized thickness distribution on final packaging (avoid the accumulation of material on zone as under-neck and bottom areas).

XMOULD technology givesdesigners the power to create lightweighted preforms which do not compromise performance of the final container.Besides the possibility to reduce preform thicknesses, this solution also improves cycle times due to friction reduction at filling phase.

Available on new or legacy tooling, only special injection stacks are required to enjoy the XMOULD technology, no changes required neither on the machine nor the hot runner.

Range of solutions on shaping components to extend the life of the cold half of our preform molds (optional).
11million life cycles guaranteed (flash < 0.2mm) without need of components refurbishing, following lifetime conditions. Significantly reduced refurbishment costs.

Hot runner with Xflow technology:

Best in class balancing
Low pressure drop
Increased injection speed, shorter cycle time
Optimal preform weight distribution
Low PET degradation and no dead spots
Easy maintenance
Compatible with industry standard cold halves and machinery

Gen4 nozzle:

Improved temperature profile
Reduced pressure drop
Easy maintenance
Long life for nozzle tip

Gen4 valve drive system

Low powder formation incorporating the patented system called XActive-Cleaning:a supplementary circuit incorporating a series of valves which govern the entry and discharge of air from the hot runner, making sure that any PET dust particles created in the system are evacuated every cycle
Improved maintenance interval

Smart lock design applied regardless of the position of the parting line: better precision and higher durability with double tapers always implemented
Flange design to allow a significantly better cooling in the very critical split-line area
Self-centering gate insert, allows for a reduction of the parting line in the base area of the preform

Models

Our ever expanding portfolio includes:

Complete molds (cold half + hot half) from 2 up to200 cavities
Conversions of existing molds (full or partial changeover)
Mold spare parts and components
Hot half spare parts and components
Refurbishment options
Electronic temperature controllers

APPLICATIONS

Our range of solutions is wide and versatile. We can supply moulds with up to 192 cavities for standard applications like mineral water or soft drinks, however we have a wide range of solutions also for special applications like wide mouth preforms or long preforms for 5 gallon containers.