UCF72 Combiblock: Ultra-Clean Filling for High-Capacity Lines

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A combiblock puts blow moulding, filling and capping on one frame with one control system, so the preform goes in and the capped bottle comes out. Equipped with a full CIP online cleaning system, the pipeline is designed to prevent material backflow during production while enabling full fluid circulation during sanitation cycles, supported by 60 sets of automatic dummy cups for unmanned cleaning cycles.

UCF72 Combiblock: Ultra-Clean Filling for High-Capacity Lines

Key facts at a glance
CombinesBlow moulding, filling and capping in one block
Output range2,000-48,000 BPH
Format range0.2-16 L PET
ProductsStill water, CSD, juice, tea, edible oil
ValvesLoad cell, volumetric, mechanical or semi-electric
OperationOne operator for the complete block

Which tasks keep the line running, and which are wasted effort?

Maintenance effort should follow the wear map, not the machine layout. Seals, capping inserts, guide rail blocks and filters account for most unplanned stops; painting and polishing account for none. A short daily check on those four items beats a long monthly inspection.

Every detail prioritizes Class 100 local cleanliness: stainless steel bottle grippers, rigid tube distributors, fully sealed viewing windows and maintenance gloves are standard.

What does a combiblock actually combine?

A combiblock joins blow moulding, filling and capping into one frame with one drive and one control system. The preform goes in at one end and the capped bottle comes out at the other, with no intermediate buffer and no bottle storage between blowing and filling.

In terms of operational efficiency, the machine achieves a finished product yield of no less than 98%, with a defective cap rate controlled below 0.1%.

ConfigurationWhat is insideTypical use
3-in-1 monoblockRinse, fill, capStill water in bought bottles
CombiblockBlow, fill, capPET lines with in-house blowing
Combiblock + labellerBlow, fill, cap, labelSingle-footprint PET line
Combiblock + packerBlow to caseHigh-volume single-format plant

For the same duty in another bottle format, the Blow-fill-cap Combibloc for CSD & Sparkling Water is specified separately.

How is the hygiene zone around the block maintained?

With a positive-pressure enclosure over the blow-fill-cap path, filtered air, and a defined cleaning cycle for the filler and the capper. The bottle is formed, filled and closed inside the same zone, which is the reason the format exists.

Equipped with a full CIP online cleaning system, the pipeline is designed to prevent material backflow during production while enabling full fluid circulation during sanitation cycles, supported by 60 sets of automatic dummy cups for unmanned cleaning cycles.

Site requirements, air and water consumption sit with the Blow-fill-cap Combibloc for Still Water.

How is output measured on a combiblock?

At the discharge of the block, in good capped bottles per hour, including the stops caused by blowing. Measuring at the filler alone flatters the number, because the filler waits for the blower more often than the other way round.

The same question is worked through from another angle in How Blow-Fill-Cap Technology Minimizes Contamination.

How to read the numbers. The output figures are specification ranges; the measured rate depends on the product and the shift. A combiblock rating assumes one preform and one cap; mould change and CIP sit outside it, so size on 0.65-0.85.

Frequently asked questions

What is the difference between a combiblock and a monoblock?

A monoblock combines rinsing, filling and capping. A combiblock adds blow moulding, so the preform goes in and the capped bottle comes out. The two terms are often confused, and the difference is whether a blow moulder is inside the block.

Does a combiblock save labour?

It is designed for one operator on the complete block, which is fewer people than three separate machines need. The saving is real only if the plant also removes the buffer and the bottle handling between stations.

What happens if the blower stops?

The filler stops within seconds because there is no accumulation. That is why the uptime target for a combiblock is set for the block, not for each machine, and why preventive maintenance on the blower is not optional.

How much floor space does a combiblock save?

It removes the empty-bottle buffer and the conveyor between the blower and the filler, which is the largest space item on a conventional PET line. The exact saving depends on the buffer length in the original layout.

Key takeaways
  1. The valve follows the product; the block is only the frame.
  2. One uptime target for the block, not three for the machines.
  3. Foundation and levelling matter more because the machines are linked.
  4. The buffer is the space you save and the cushion you give up.
About the author
Written by the Sunswell engineering team - led by Howie SUN, Founder & CEO, with 14 years in filling and blow-moulding equipment R&D and turnkey project delivery across 71+ countries.
Last reviewed: 2026-08-28 . Reviewed by Sunswell engineering team
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