Yes. A capable automatic packaging machine supplier can accommodate custom product sizes when the product range is defined before machine design and verified with real samples. Size handling may involve adjustable guide rails, servo-controlled film feeding, interchangeable forming sets, wider conveyors, modified sealing jaws, sensor repositioning, and stored PLC recipes. PMMI’s 2024 contract packaging research, based on 157 interviews and surveys plus 61 secondary sources, found that flexible machinery and faster changeovers remain important equipment requirements. The practical limit is not a single length or width figure: product weight, shape, film type, seal area, feeding behavior, required packs per minute, and the difference between the smallest and largest SKU all affect whether one machine can cover the requested range.
A standard packaging machine normally has an operating envelope rather than one fixed product size. A horizontal flow wrapper, for example, may use adjustable guides and configurable bag length while still having fixed mechanical limits for film width, jaw opening, conveyor clearance, and sealing geometry. Moving from a 100 mm product to a 120 mm product can therefore be simple, while moving from 100 mm to 300 mm may require different hardware.
That distinction matters more as SKU counts rise. PMMI’s 2024 research on contract packaging and manufacturing drew on 157 interviews and surveys conducted across contract packagers, manufacturers, and brand owners, together with analysis of 61 sources from 2023–2024. The report identifies machine flexibility, simpler operation, changeover optimization, automation, and supplier lifecycle support among equipment priorities.
A buyer should therefore give the supplier a dimensional range, not only the dimensions of one sample. A specification such as “200 × 100 × 40 mm” gives less engineering information than minimum, nominal, and maximum dimensions for every axis, accompanied by product weight and tolerances.
| Information supplied | Why the supplier needs it |
|---|---|
| Minimum and maximum length | Determines conveyor spacing, film advance, cut length, and timing range |
| Minimum and maximum width | Affects guides, film width, forming components, and sealing clearance |
| Minimum and maximum height | Affects jaw clearance, forming geometry, and product transfer |
| Product weight | Influences conveyor selection, acceleration, and handling |
| Size tolerance | Shows how much variation the machine must accept without adjustment |
| Required output | Establishes whether the requested size can run at the required packs/min |
| Number of SKUs | Helps define manual, recipe-based, or automated changeover |
| Packaging material | Affects sealing temperature, dwell time, tension, and film handling |
Once the dimensional envelope is known, the supplier can separate adjustments into three groups: settings changed through the HMI, mechanical adjustments made by an operator, and dedicated format parts. That separation should appear in the quotation because “handles multiple sizes” can describe very different machines.
A useful acceptance specification states exactly which SKU sizes the machine must run, the target speed for each SKU, the parts that must be changed, and the expected changeover procedure.
For products relatively close in size, adjustable guide rails, handwheels, sensor brackets, and recipe settings may be sufficient. Servo systems can change film length, conveyor timing, product spacing, or sealing position without replacing the whole mechanism. PMMI’s 2024 research also discusses growing use of data, machine vision, predictive maintenance, and digital tools in packaging and processing equipment.
Mechanical range still sets the boundary. A servo motor cannot make a 250 mm sealing jaw accommodate a package requiring substantially more physical sealing width. Software cannot increase conveyor clearance or make a narrow film roll cover a wider product. When the largest SKU exceeds those physical limits, larger components or a different machine frame may be needed.
A practical review can classify requested products before machine construction:
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Same format, moderate dimensional variation: adjustable guides and stored machine recipes may cover the range.
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Same package style with larger dimensional differences: interchangeable forming sets, sealing components, or change parts may be required.
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Different shapes or unstable products: the feeding and positioning section may need modification.
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Very large dimensional differences: one standard configuration may not provide efficient operation across every SKU.
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Different packaging materials: new temperature, tension, sealing-time, and film-tracking settings may also be required.
The feeding section deserves particular attention because fitting through the machine does not establish that a product can run reliably. A rigid rectangular carton can remain aligned on a conveyor, while a soft pouch, cylindrical item, lightweight tray, or irregular component of similar dimensions may rotate, slide, bunch, or arrive at the sealing section with inconsistent spacing.
For that reason, an automatic packaging machine supplier should review real products whenever feeding behavior cannot be established from drawings. A sample run can show whether side belts, lane guides, indexing conveyors, flighted conveyors, pushers, spacing belts, or another feeding arrangement is required.
The 2024 U.S. packaging machinery market also shows why manufacturers increasingly examine automation and flexibility together. PMMI reported U.S. packaging machinery shipments of $10.9 billion in 2023, up 5.8%, with projected industry growth of 2.5% for 2024 and a forecast growth rate reaching 8.0% in 2027. New plants, line upgrades, automation, and changing package formats were among factors affecting machinery investment.
Size flexibility can also change throughput. A machine advertised at 120 packs per minute should not automatically be assumed to produce 120 packs per minute for every permitted product. Longer packages require greater film travel and conveyor pitch; tall products may require different jaw movement; unstable products may need lower acceleration or greater spacing.
Consider a line where the nominal cycle allows 100 packs per minute. If a larger SKU requires a 20% longer machine pitch, maintaining the same linear conveyor speed does not automatically preserve the original package rate. Actual output must be established from the complete motion cycle, feeding conditions, seal dwell requirements, and downstream capacity rather than the headline maximum speed.
Buyers should request speed data against named product dimensions and packaging materials instead of accepting one maximum machine-speed figure.
Film introduces another set of dimensional constraints. Increasing product width or height changes the amount of material required to wrap the cross-section. The new film width must still fit the machine's unwind system, forming section, tracking arrangement, and sealing area. Film thickness and structure can also alter the temperature and dwell conditions needed for a repeatable seal.
That issue becomes more important in regulated packaging. ISO 11607-2:2019, which was reviewed and confirmed in 2024, specifies validation requirements for forming, sealing, and assembly processes used for terminally sterilized medical-device packaging. FDA’s recognized consensus standards database also lists ISO 11607-2 and ASTM F88/F88M-23 for flexible-barrier seal-strength testing.
Although most general consumer packaging is not governed by ISO 11607, the engineering principle is useful: dimensional compatibility alone does not establish an acceptable package. Seal width, continuity, temperature, pressure, dwell time, material behavior, and repeatability may need verification after a format change.
Changeover time should therefore be measured as part of machine selection. A plant changing SKU once every two weeks may accept manual guide adjustment and replacement tooling. A line changing SKU four times per 8-hour shift faces a different calculation because even 15 minutes per changeover would consume 60 minutes, or 12.5% of an 8-hour shift, before cleaning or startup checks are included.
Stored recipes can reduce the settings portion of that work. A PLC/HMI may store film length, conveyor speed, registration position, temperature setpoints, timing values, and servo positions for individual SKUs. The operator selects the recipe while mechanical format parts are changed where required.
Recipe storage should not be confused with fully automatic size change. Ask which settings reposition themselves and which require an operator. A machine may store 50 or 100 recipes while still requiring manual adjustment of guide rails, film formers, sensors, or sealing assemblies.
The distinction can be documented in a simple procurement comparison:
| Changeover item | Manual system | Higher-automation system |
|---|---|---|
| Product recipe | Operator enters values | Stored PLC/HMI recipe |
| Guide width | Hand adjustment | Servo or motor adjustment may be available |
| Film length | Manual parameter entry | Recipe-controlled |
| Forming set | Physical replacement | Usually physical replacement |
| Sensor position | Manual adjustment on some designs | Fixed or automatically compensated on suitable designs |
| Verification | Trial packages | Recipe plus trial/inspection |
The next question is repeatability after changeover. Returning a machine to a previous SKU should reproduce the approved settings without extended trial-and-error. PMMI’s December 2024 work on packaging data acquisition highlights OEE measurement, machine connectivity, sensor retrofits, standardization, MES/SCADA integration, and statistical process control as areas manufacturers are using to understand equipment performance.
A factory acceptance test can put that repeatability into measurable terms. Instead of asking the supplier to “test several sizes,” the buyer can provide the smallest SKU, largest SKU, and representative intermediate products, then define acceptable package dimensions, seal condition, output rate, reject criteria, and changeover procedure.
For a family of 12 SKUs, testing all 12 may be appropriate when their materials or handling behavior differ substantially. Where products are mechanically similar, boundary samples can be selected with engineering justification. The smallest product may challenge sensor detection and guiding, while the largest may challenge clearance, film width, sealing-jaw opening, and conveyor pitch.
A useful FAT record can include:
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Actual product dimensions and weight for every sample tested.
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Packaging material specification and film width.
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Target and measured packs per minute.
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A defined continuous production run rather than several hand-picked packages.
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Reject count and reason for each reject.
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Seal, cut, registration, label, or code inspection results where applicable.
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Time required to move from one SKU to another.
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Parts and tools required during that changeover.
Sample quantity should match the application rather than an arbitrary universal number. Medical packaging validation, for example, requires statistically justified sampling appropriate to the process and risk; there is no responsible single sample count that fits every product. ISO 11607-2:2019 remains current after its 2024 confirmation, while the FDA database recognizes associated packaging standards including ASTM F88/F88M-23.
Maintenance also changes when a machine carries many formats. Ten interchangeable forming sets create ten sets of parts that must be identified, stored, inspected, and kept available. Tool-free components, engraved format identification, repeatable position indicators, and documented recipes can reduce mistakes when operators switch among many SKUs.
Future sizes deserve attention before the purchase order is released. If a manufacturer currently packages products between 80 and 180 mm long but expects a 220 mm SKU within 2 years, giving the supplier that information during design may allow suitable conveyor length, jaw clearance, film capacity, and control range to be incorporated before fabrication.
Supplier documentation should finally state the approved size envelope rather than use broad wording such as “custom sizes available.” PMMI’s 2024 State of the Industry research combined supplier surveys, 30+ packaging-machinery supplier interviews, and public economic datasets, and identified automation, digital tools, aftermarket support, quality, and changing material requirements among major areas affecting machinery development.
The purchase specification should list minimum and maximum dimensions, weight range, approved packaging materials, target output by SKU, utilities, required change parts, changeover method, and FAT acceptance conditions. A machine is suitable for custom product sizes only when those sizes can be fed, packaged, sealed, discharged, and repeated at the agreed production conditions—not merely when the product physically fits inside the equipment.