Thermoforming vs Roller-Plate Blister Machines: How to Choose

Choose the machine class based on the depth and forming area your product requires, then compare output on the material you intend to use. The thermoforming blister packaging models presented accommodate deeper cavities. Roller-plate offers higher speed for medium and large batches, provided the format fits within the machine’s limits.

For buyers and production managers, the comparison needs to show which machine can pack the product before discussing speed. A quote may look better because it gives a higher figure, even though it uses a different unit. The proposed machine may also need more space or have a higher installed power rating than the factory can accommodate.

Start the buying process with a real sample, the packaging drawing and production demand. The comparison below brings together the blister packing machine specifications supplied by Jianghua and explains how to assess the limits of each class. Use the trial to identify which machine suits the product and when replacing the machine will not solve the problem.

Each column is a range across the models in that series, not the specification of one machine. Our website quotes cutting efficiency in two different units across these models — strokes per minute and plates per minute. The two units are not the same measurement and cannot be compared by size.

1. How do the two forming methods work?

Thermoforming shapes the pack between flat plates, while roller-plate forms and seals the material web continuously between rollers. In the first class, the process heats and shapes the material between the plates. In the second, the web passes through rollers during forming and sealing.

Differences in the blister packaging process help you choose a machine, but do not rank the machines by quality. A thermoforming blister packaging machine can handle products that the roller-plate models cannot handle. Compare the application without treating one class as basic and the other as superior.

2. Which speed figures can you compare?

Compare speeds only when the unit and material are the same. Strokes/min measures cutting frequency, while plates/min measures output in plates, and a single cutting stroke may produce several plates.

For the DPH-260L, the catalogue lists 40-200 strokes/min on alu-PVC and 120 strokes/min on alu-alu. The alu-PVC speed is given as an adjustable range, while the alu-alu speed is a single figure. Buying on the basis of the highest alu-PVC figure may leave you with an unsuitable machine when the pack requires alu-alu.

You can also use alu-alu in thermoforming blister packaging, but comparisons must still refer to the model. The DPP-260K lists 20-180 plates/min on alu-PVC and 20-120 plates/min on alu-alu. Material compatibility does not mean the same output. When choosing alu-alu, consider both the pack’s material requirements and the machine’s output, without assuming that one material is better for every application.

Tip: watch the unit before you compare two machines.

Blister machine speed is quoted two ways in this industry: cutting frequency in strokes per minute, and output in plates per minute. One cutting stroke can produce several plates at once, so these are not the same measurement. They cannot be converted into each other, and they cannot be compared by size.

When a supplier quotes a speed, ask which of the two it is, and on which material it was measured.

3. Which class fits a deep cavity?

Cavities deeper than 12 mm rule out roller-plate DPH-260L, DPH-400K and DPH-400H models, whose maximum forming depth is 12 mm. Speed cannot compensate for a depth the machine cannot form.

In the thermoforming class, the standard DPP-260K allows a maximum forming depth of 14 mm, and the DPP-140H allows 18 mm. Show the supplier your deepest cavity, even if it accounts for a small share of orders. The blister forming machine must accommodate the product that determines your depth requirement.

Tip: take three things to a factory visit.

A finished sample of your deepest cavity, your actual packaging material — one roll of PVC and one of foil — and your target output per shift.

Ask the supplier to run your material at your cavity size, not a demo setup they prepared in advance. Time the changeover yourself while you are there. A changeover figure in a brochure was measured under conditions nobody will describe to you.

4. How does forming area change the choice?

Forming area favours the roller-plate models in this comparison when the cavity layout requires a larger format. The DPH-400K and DPH-400H allow a maximum area of 380 x 200 mm. The DPH-260L allows 250 x 250 mm.

For the thermoforming DPP-260H and DPP-260K models, the maximum area is 160 x 250 mm. Check depth and area together. If the drawing requires both a deeper cavity and a layout larger than the available limits, revise the layout or confirm another configuration with the supplier.

5. What do power and floor space tell you?

Installed power and dimensions show requirements that speed figures do not reveal. The DPP-260K has a total power rating of 8 kW at 380 V 50 Hz. The DPH-260L lists 25 kW at 380 V 50 Hz. The quoted installed power ratings do not show how much electricity the machine uses while running.

The data for thermoforming blister packaging also show why you need to compare length and weight by model. The DPP-260K is 4,700 mm long and weighs 2,600 kg. The DPH-260L is 4,350 mm long and weighs 3,200 kg. The heavier machine is not necessarily the longer one.

Check access, operating space and electrical capacity before accepting the quote. To compare energy costs, ask for consumption figures under actual working conditions. Without that measurement, a calculation based on installed power is an estimate rather than a prediction of cost.

Tip: put electricity into the five-year sum.

Multiply the installed power by the hours the machine runs per day, then by your local tariff, to get the daily difference between the two classes. Multiply that by your production days in a year.

It takes ten minutes, and on most projects it moves the total cost more than the difference in the machine price does. Use your own tariff and your own shift pattern, not somebody else's.

6. What determines tooling and changeover time?

Changeover time depends on the parts replaced and the adjustments needed to restart production. Watch how the operator removes the mould, repositions the guides and resets the registration of the PVC and PTP (aluminium foil for sealing) webs.

The DPP-260K has a quick-change system that allows mould removal from the front. Replacing a complete mould set on the DPP-260K takes about 10-15 minutes. Restarting production may require other adjustments.

A trial with your material and format should show which settings the control system stores and which need to be adjusted manually.

7. When should you keep the machine you have?

Keep the current machine when its forming capacity already suits the product and lost output has another cause. Buying extra speed will not remove a bottleneck outside the blister stage.

• If the cartoner limits output, examine the capacity of that stage first.

• If frequent changeovers interrupt production, review batch scheduling and settings before replacing the equipment.

• If the product does not yet have proven demand, postpone buying a machine sized for continuous operation.

Consider bottlenecks and product demand when reviewing the process. A quote for new equipment should show which constraint the machine will remove.

8. How do you reach a buying decision?

Rule out configurations that do not fit the cavity and forming area before ranking quotes by output. Then compare figures for the same material and in the same unit. Assess power and space requirements for the remaining models.

Test the choice with real samples. For thermoforming blister packaging and roller-plate alike, the quote needs to state the configuration examined and the trial conditions. Before accepting the quote, check the machine itself to confirm any conditions the supplier has not yet documented.

9. Where Jianghua blister machines fit

Jianghua builds both classes. The thermoforming range covers the DPP-140H, DPP-260H, DPP-260K, DPP-320H and DPP-500, with forming depths from 14 mm up to 26 mm, and suits deep cavities, frequent format changes and small to medium batches. The roller-plate range covers the DPH-260L, DPH-400K and DPH-400H, forms to a maximum depth of 12 mm, and reaches 600–800 plates per minute on alu-PVC on the DPH-400K and DPH-400H, for medium to large volumes and larger formats.

Both classes run alu-PVC and alu-alu, and the thermoforming range also runs paper-alu. Every model in both ranges takes the same standard plate size, 80 × 57 mm. Our machines are designed for pharmaceutical GMP production requirements. Our quality management system is certified to ISO 9001:2015, with the scope of design and production of blister packaging machines for drug packaging, and the DPH, DPP, DPR, DPHR and DXH series are covered by our EU CE attestation of conformity under the Machinery Directive.

The two classes are not substitutes for each other. If your deepest cavity is over 12 mm, the roller-plate class is out of the running, and that has nothing to do with speed. Conversely, if your cavity's long edge is over 250 mm, the thermoforming class cannot produce it. Selection starts with the cavity, not with the speed figure.

10. FAQ

Q1. Which is faster, a thermoforming or a roller-plate blister machine?

Roller-plate is the faster class for medium and large batches, but comparisons require the same unit and material. The DPH-400K and DPH-400H list 600-800 plates/min on alu-PVC and 300-500 plates/min on alu-alu. Do not compare these figures directly with a cutting frequency expressed in strokes/min.

Q2. My product needs a deep cavity. Which class should I choose?

Choose thermoforming if the required depth exceeds the 12 mm maximum of the DPH models compared. The standard DPP-260K allows a maximum forming depth of 14 mm, and the DPP-140H allows 18 mm. The choice also depends on the forming area needed, so check the combination of depth and cavity layout with a product sample.

Q3. What is the power consumption of a thermoforming blister machine?

Actual consumption needs to be confirmed while the machine runs, since the stated figures are installed power and component ratings. The DPP-260K lists a total power rating of 8 kW at 380 V 50 Hz. For the DPP-140H, the figures are 1.1 kW for the main motor and 2.4 kW for heating, at 220 V 50 Hz.

Q4. How long does a blister machine changeover take?

There is no confirmed general changeover time for these models. The figure supplied for the DPP-260K is about 10-15 minutes to replace a complete mould set using the front-withdrawal system. Guide adjustments and web registration also affect the return to production. Time the changeover during a trial with your format and material.

Q5. Can both machine classes run alu-alu packaging?

Yes, the thermoforming and roller-plate classes presented can both run alu-alu. Being able to run the material does not always mean keeping the alu-PVC speed. For the DPH-260L, the quoted frequency is 120 strokes/min on alu-alu, compared with an adjustable range of 40-200 strokes/min on alu-PVC. Compare performance on the chosen material before deciding what capacity to buy.

11. Not sure whether thermoforming or roller-plate fits your product?

Send us your dosage form, your cavity size, your deepest cavity and your target output per shift. We will tell you which class fits — including when the answer is not one of ours.

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