Paper Products Palletizer: How Paper and Tissue Plants Automate Bulky Case Stacking

A paper products plant has the opposite problem from a bottling plant. Cases off a tissue, towel or napkin line are rarely heavy — they are bulky, light and easy to crush. One case can take up much of a pallet layer, the stack grows tall quickly, and a careless placement can dent the product or lean the load. Hand-stacking looks light, but the reach and repetition make it tiring and inconsistent. Here is what to check before you automate it.

Check 1: Size to dimensions and the heaviest case, not weight alone

Start with the five sizing numbers we recommend in Pallet Patterns and Case Sizing: case length × width × height, heaviest weight, sustained cases per minute, cases per pallet, and pallet size. In paper products the dimensions matter as much as the weight. Most tissue and towel cases sit well inside our rental cell limit of cases up to 20 kg (44 lb), but a large club-store pack or a dense paper case can be both bigger and heavier than the standard retail case from the same line.

List every format in scope — retail, club-store and bulk formats may share one line end, and each needs its own pattern. Confirm the largest case fits the grip, the pattern and the robot’s reach of up to 1,880 mm. A palletizer sized only to the average case can be caught out by the one oversize format, even when it is light.

Check 2: Place bulky cases without crushing them

Tissue, towels and napkins compress. Squeeze a case too hard, drop it the last few inches, or stack upper layers so their weight bears unevenly, and the cases below arrive dented — a quality problem for a product customers judge by how clean and intact it looks on the shelf. Grip and placement are therefore a product-protection question, not just a handling question.

Prove the grip on your real sealed cases during installation and start-up, including the softest case in the range. Choose patterns that spread weight evenly and produce a square, stable load for stretch-wrapping. Interlocked layers help where case size allows; column stacking may suit other formats better. Each format’s pattern becomes a stored recipe, so the hundredth pallet matches the first — the same discipline we describe for cosmetics and personal care plants.

Check 3: Plan for tall stacks and fast-filling pallets

Because each case is large, a pallet layer may hold only a few cases, and a full pallet can reach its target height in fewer layers than on a small-case line. That changes the work at the line end: pallet exchanges come around on a rhythm set by case size, and operators hand-stacking tall pallets are repeatedly lifting bulky cases to shoulder height and above — the hardest placements to keep square and consistent.

Our typical layout has two pallet stations, one on each side of the robot, which helps stacking continue while a full pallet is exchanged. Remember the layout rule as well: a single fixed cobot places to its left and right only; serving four pallet positions takes a linear rail or a second robot. If your plant needs stacking heights above the standard setup, say so at the walkthrough stage — Dorna’s cobot cells can be customized, and height is a design question to settle before install day, not after.

For the cycle-time math behind sustained rates, see How Many Cases Per Minute Can a Cobot Palletizer Handle?

Check 4: Match the sustained rate and make changeovers a recipe change

Size the cell to the sustained cases per minute your line actually holds over a full run — including pallet exchanges, wrapper stops and SKU changeovers — not to a short peak. Paper lines change formats often: different sheet counts, pack sizes, retail and club formats, and private-label runs. By hand, every changeover is a chance for the new format to be stacked to the wrong pattern or mixed with the last run.

With stored recipes, a changeover becomes a selection: pick the recipe for the new case, confirm the first case matches the pattern, and follow a clear rule for the part-finished pallet from the previous run. Settle that sequence before install day — who selects the recipe, how part-finished pallets are completed or staged, and where finished pallets for different SKUs and customers are kept separated. That approach is the same one we recommend in our food plant palletizer guide, where frequent changeovers are also the norm.

Check 5: Footprint, power, air, dust and safety at the line end

Paper plants need clear floor discipline: finished pallets are bulky to stage and forklift routes at the line end are busy. A cobot cell is compact — a typical footprint is about 3,000 × 3,000 mm, with two pallet stations of 1,100 × 1,100 mm, a conveyor infeed at the top centre, 110 V power (max 15 A) and a compressed-air connection. Place it where sealed cases already travel, after the case packer or sealer, without blocking forklift routes, access ways or emergency exits.

Safety guides and a cage are options fitted when your risk assessment or plant rules call for them; the typical layout includes a safety light curtain on the open side. Our guide Are Cobot Palletizers Safe? walks through that assessment, and Palletizer Installation: What to Expect covers delivery — typically 3–4 weeks — through on-site installation, start-up, recipe creation and operator training. The robot ships on a wooden pallet; receiving it and moving it on site with a pallet jack, at a delivery time coordinated in advance, are the customer’s side of that plan.

Why paper products plants often rent the first cell

Formats in paper products change with retailer requirements and private-label contracts. A system bought and fixed around today’s pack sizes can be the wrong answer for next year’s formats. A palletizer rental at $1,999/month with zero upfront, installation and maintenance included, lets a plant prove the cell on its bulkiest case, its softest tissue case and its real changeover pattern before making automation permanent. Billing and the term start at installation and start-up, and the cell is tuned to your cases and patterns at install. If you are weighing rental against a purchase, Palletizer Rent vs Buy lays out the comparison, and our Pet Food Palletizer guide shows the opposite handling problem — heavy, shifting cases instead of light, bulky ones.

The bottom line

For a paper, tissue or towel manufacturer, the fit check is five questions: Have you listed every case format by dimensions and weighed the heaviest sealed case? Have you proved a grip and pattern that place bulky cases without crushing them? Have you planned for tall stacks, pallet-exchange rhythm and the two-station layout? Can the cell hold your sustained rate, with changeovers handled by stored recipes and a clear rule for part-finished pallets? And is about 3,000 × 3,000 mm, 110 V power and air available at the line end without blocking forklift routes? Answer those, and a paper products palletizer becomes a practical next step: square, intact pallets, without hand-stacking a single bulky case.