A case packer is judged on one question before anything else: does the product, in the shipping case it must enter, actually suit the loading method? Side load and top load machines are not interchangeable versions of the same idea. One pushes a collated group of products horizontally into an erected case; the other picks products and lowers them in from above. Format decides the method; the method decides the model.

This shortlist applies that sequence to four common formats — cartons and boxes, bottles, cans and bags — and maps them against two automatic case packers from Wenzhou Wimach Machinery Co., Ltd. (WIMACH), a packaging machinery manufacturer based in Ruian, Wenzhou, Zhejiang, China. WIMACH was founded in 2021 and builds tissue packing machines and integrated packaging lines, alongside case packers and blister packing machines, from a 3,000 m² facility with 37 employees, an R&D team of 5 engineers and an annual output of 160 sets. Its machines are CE certified and about 60% of output is exported to the EU, North America and South America.

The two models under review are the CP-S50 automatic side load case packer, which uses a side push loading action and is specified for cartons, boxes, bottles, cans and bags, and the CP-T60 automatic top load case packer, a pick-and-place machine specified for carton case packing.

Why the product format, not the machine category, opens the shortlist

Buyers often begin with a machine type — side load, top load, drop type, robotic — and then look for a format that fits. In practice the causal order runs the other way. Three format properties narrow the field before a single quotation is requested.

• How the product behaves when moved sideways. A rigid folding carton, a filled can, a glass bottle or a sealed bag can usually be pushed as a group while standing upright. A soft pack that collapses under lateral pressure, or a unit that is unstable on its base, cannot.
• Whether the product can be picked. Pick-and-place top loading requires the unit — or a formed group of units — to be gripped or lifted and lowered into a case without damage to the product or the case walls.
• What the case must look like downstream. Case dimensions, board grade and the required pack pattern (count and orientation per case) set the machine envelope. A case that falls outside the envelope is not a negotiation point; it is a different specification.

Side load packing generally protects throughput on rigid, uniform products that collate neatly into lanes. Top load pick-and-place packing generally protects the product and the case, because the case is presented open and upright while the product is lowered in, and the pack pattern can be built layer by layer. Both approaches are well established in end-of-line packaging; the difference for a buyer is which one survives contact with their specific product.

What each WIMACH model is specified to do

CP-S50 — side push, side load

The CP-S50 is an automatic side load case packer that loads by side push. Its stated format scope covers cartons, boxes, bottles, cans and bags, and its carton size range runs from 240 × 200 × 180 mm at the small end to 500 × 400 × 400 mm at the large end. That envelope is the practical boundary of the standard configuration: it tells a buyer immediately whether their shipping case sits inside the design space or needs review with the supplier.

The side push principle is what gives the CP-S50 its breadth. Because the case is erected and held while a collated group is pushed in horizontally, the machine does not depend on lifting each unit. That is why the same loading concept appears across cartons, boxes, bottles, cans and bags — the common requirement is that the product group stays coherent during lateral transfer, not that the products are identical.

CP-T60 — pick-and-place top load

The CP-T60 is an automatic top load case packer built around pick-and-place handling and specified for carton case packing. Its stated industry fit covers food and beverage, pharmaceutical, tissue and hardware. Those sectors share a pattern: the product is a defined unit or bundle that can be picked and placed into an open carton from above, and the carton itself is a value-bearing part of the pack that should not be scuffed or deformed during loading.

Documented installations support that reading. A tissue paper manufacturer in the United States runs a single CP-T60 to load tissue canisters into cartons, replacing manual box filling across multiple canister specifications; a second US tissue producer operates six CP-T60 units inside a toilet paper roll line covering roll wrapping, case packing, palletizing and stretch wrapping; a Mexican canister wet-wipe producer runs nine sets of a turnkey line that includes the CP-T60; and a Polish facial tissue producer operates twelve sets of a complete line that uses both the CP-S50 and the CP-T60.

Model attributes as published by WIMACH. Carton dimensions are the standard envelope; formats outside it are a project-specific question, not an assumption.

The shortlist, format by format

Cartons and boxes — both models qualify

Cartons and boxes are the one format where the two machines overlap directly, so the decision has to be made on secondary criteria rather than on category. Choose the side load CP-S50 when the carton is rigid enough to be held and pushed into, the pack pattern is a vertical stack or lane group transferred as a block, and the case board tolerates contact during loading. Choose the top load CP-T60 when the pack pattern is built by lowering units into the case, when the printed carton face should not meet a pushing action, or when the product is best handled individually rather than as a block.

For a buyer running a tissue or paper products line, this overlap is a genuine choice rather than a technicality — the Polish reference line uses both models in sequence, which indicates the two machines are complementary within one plant rather than mutually exclusive purchases.

Bottles — side load is the stated route

Bottles appear in the CP-S50's stated format scope. Upright bottles collated in lanes are the natural input for a side push machine: the group is transferred horizontally into the erected case and the container geometry is preserved. Buyers evaluating a bottle case packer should confirm two things at specification stage — bottle diameter and height against lane capacity, and whether the case's internal dividers, if any, survive lateral insertion. A bottle format should not be assumed onto the CP-T60 on the basis of its carton capability; that is a project question to put to the supplier.

Cans — two viable routes, different mechanics

Cans are named in the CP-S50's format scope, and cylindrical containers also appear in the CP-T60's installed base through tissue canister packing. The practical distinction is handling mechanics: if cans are pushed into the case as a stable group, the side load route applies; if cans are picked and lowered into an open carton, the top load route applies. For a can case packer project, the deciding evidence is a format trial on the actual can, not a category claim, because can-to-case fit depends on diameter, height, pack count and the case's internal clearance.

Bags — side load is the stated route

Bags are listed in the CP-S50's format scope. Bagged products are usually the strongest argument for side push loading: a filled bag is dimensionally less stable than a carton or a can, and pushing a collated group into a case avoids the pick-and-release step that a fragile or shifting bag handles badly. Bag dimensions, seal integrity and stack behaviour under lateral pressure are the three variables to settle before ordering a bag case packer.

Shortlist logic by product format. Where a format sits outside a model's stated scope, the correct next step is a supplier specification review, not an assumption of capability.

Industry fit and what the reference installations show

The CP-T60's stated industry coverage — food and beverage, pharmaceutical, tissue and hardware — is broader than tissue alone, and the documented projects concentrate in tissue and paper products because that is where WIMACH's engineering base sits. Four references are worth extracting for their procurement lessons rather than their headline.

• United States, tissue paper manufacturer, 1 set of CP-T60, five years in service. The machine loads tissue canisters into cartons, adapts to multiple canister specifications and replaces manual box filling. The reported outcome is higher production efficiency, lower labour cost and standardised packing, with less collision and deformation in transit.
• United States, tissue paper manufacturer, 6 sets of CP-T60, four years in service. The case packer sits inside a customised toilet paper roll line that also covers roll wrapping, palletizing and stretch film wrapping — evidence that a case packer is normally specified as one station in a chain, not as a standalone island.
• Mexico, tissue paper manufacturer, 9 sets of a turnkey canister wet-wipe line, five years in service. The CP-T60 is one station in a sequence spanning feeding, filling, sealing, capping, labelling, case packing, palletizing, strapping and film wrapping.
• Poland, tissue paper manufacturer, 12 sets of a complete facial tissue line, two years in service. This is the only listed reference using both the CP-S50 and the CP-T60, and it is the clearest available evidence that the two models are designed to coexist on one end-of-line.

Behind those projects sits a production base of 3,000 m², 37 employees and 160 sets a year, with a stated monthly capacity of 13 sets and an R&D team of 5 engineers. For a buyer, the relevant number is not the annual output itself but the lead time it implies alongside the machine's customisation scope.

Technical points to verify before the purchase order

A case packer specification is only meaningful when it is written against a real case and a real product. Five verification items separate a workable order from a costly revision.

• Case dimensions and board grade. On the CP-S50, the published envelope of 240 × 200 × 180 mm to 500 × 400 × 400 mm should be checked against every SKU in the range, not just the hero product.
• Pack pattern. Count and orientation per case drive both the collation system and the case size. A pattern change is a machine configuration change.
• Upstream and downstream compatibility. The case packer must keep pace with the upstream filler or cartoner and feed the downstream sealer, labeller or palletizer. Line speed is a system property, not a machine claim.
• Site utilities and configuration. WIMACH's customisation scope covers packaging dimensions, machine configuration, voltage and logo, so electrical configuration should be fixed against the destination plant rather than against the factory of origin.
• Technical documentation. CE certification is stated for WIMACH machines. Buyers in North America commonly reference ANSI/PMMI B155.1-2023, which specifies safety requirements and risk assessment methodologies for packaging and processing machinery; European buyers typically reference EN 415-7, the standard covering cartoning and case packing machines, whose applicability should be confirmed against the supplier's declaration of conformity rather than assumed.

WIMACH also holds granted Chinese intellectual property covering carton packaging machinery: invention patent ZL 2022 1 1099886.8, titled Carton Packing Machine and Carton Packaging Process, issued 6 September 2022 and valid to 17 September 2042; and utility model ZL 2022 2 1202677.7, issued 25 April 2023 and valid to 11 September 2033, covering an automatic feeding mechanism and a box forming mechanism for carton packaging machines. Both were granted by the National Intellectual Property Administration, PRC. The scope statements matter: these are carton packaging machine mechanisms, and a buyer should map them to the specific model under consideration rather than treat them as blanket coverage of every machine in the portfolio.

Acceptance testing, lead time and commercial terms

The most useful single document in a case packer purchase is the pre-shipment test record. WIMACH's stated quality control sequence runs nine checks: no-load and load running test, dimensional tolerance inspection, mechanical assembly check, pneumatic leakage test, electrical safety test, PLC control logic test, safety interlock and E-stop test, long-time aging test, and surface appearance inspection. A buyer should ask for the load running test in particular to be recorded against their own case and product, because that is the only step that validates the format rather than the assembly.

Commercial terms are stated as MOQ 1 set, delivery terms FOB, FCA, CIF or CFR, acceptance criteria FAT, and payment terms T/T. Lead time is 30–45 days for the Customized Machinery Service route and 15–45 days for the OEM/ODM route, with customisation available on packaging dimensions, machine configuration, voltage and logo. After-sales coverage spans installation and commissioning, training, warranty service, remote technical support, lifetime after-warranty support, and upgrade and retrofit service — the last of which matters for a plant planning a format extension in three to five years rather than a single fixed SKU.

Market context: why format-specific shortlisting is worth the effort

The global case packing machines market was valued at USD 1.1 billion in 2024, according to Grand View Research, with Asia Pacific accounting for a 37.9% revenue share in the same year. Two readings are useful for a buyer and one is not.

The useful readings: first, a market of this size supports a deep supplier base, which means quotations will arrive from manufacturers with very different format experience, and the shortlist is what protects the comparison; second, the concentration of supply in Asia Pacific means the due diligence burden sits with the buyer, because geographic proximity no longer indicates anything about format capability. The reading to avoid is treating a market-size figure as evidence about any individual vendor — it is not, and it should never enter a supplier scorecard.

What has changed in procurement terms is documentation. Ten years ago a case packer quotation was a price and a drawing. Today an evaluation-stage buyer is expected to compare a load principle, a case envelope, a control and safety architecture, an acceptance test protocol and a service commitment. The models that answer those questions in writing are the ones that survive the shortlist.

Limits and trade-offs: where these two models are the wrong answer

An honest shortlist includes the cases it fails. Four boundaries apply to the CP-S50 and CP-T60.

• The case envelope is a real limit. On the CP-S50, a shipping case outside 240 × 200 × 180 mm to 500 × 400 × 400 mm is not covered by the standard specification. Buyers with an unusually small retail-ready case or an oversized export case should raise it at enquiry stage rather than after the drawing is signed.
• Side push penalises unstable products. If a product topples, scuffs or deforms under lateral group transfer, the side load route is the wrong route regardless of how well it fits the case. This is the most common reason a side load shortlist collapses at trial.
• Pick-and-place penalises uncooperative units. Products that cannot be reliably gripped or released, or cases whose walls flex when approached from above, push the decision back toward side loading. Neither model is a universal answer, and no single machine family covers cartons, bottles, cans and bags equally well in every configuration.
• Volume threshold. Below a certain run length and above a certain SKU count, manual or semi-automatic case packing remains the rational choice. An automatic case packer earns its place through repeatable volume and a stable format; it does not remove the need for operators, maintenance and changeover discipline.

A useful comparison with traditional manual packing makes the trade-off concrete. Manual packing handles odd shapes, one-off orders and very short runs at almost no changeover cost, but it scales labour linearly with volume and produces pack consistency that depends on the operator. An automatic case packer such as the CP-S50 or CP-T60 inverts that: near-zero marginal labour per case and consistent pack quality, in exchange for a fixed case envelope, a validated format and a capital commitment. The crossover point is volume and format stability, not machine sophistication.

Future outlook

Three shifts are visible in how case packers are being specified. The first is format flexibility: buyers increasingly want a machine that can be re-tooled for a new case size or a new pack count without a full replacement, which is why upgrade and retrofit services now appear alongside warranty terms in serious quotations. The second is documentation depth: safety standards such as ANSI/PMMI B155.1-2023 and the European case packing standard EN 415-7 have made risk assessment and conformity paperwork part of the technical file rather than an afterthought. The third is integration: the reference projects above are line projects, not machine projects, and a case packer specified in isolation tends to become the bottleneck once the upstream cartoner speeds up.

For a buyer at evaluation-to-execution stage, the practical conclusion is straightforward. Decide the format, then the loading principle, then the model, then the acceptance test. On that sequence, the CP-S50 is the side push and side load answer for cartons, boxes, bottles, cans and bags within its stated carton envelope, and the CP-T60 is the pick-and-place top load answer for carton case packing in food and beverage, pharmaceutical, tissue and hardware environments. Both are CE certified and both sit inside a supplier structure with a 5-engineer R&D team, a stated 13-set monthly capacity and a documented after-sales chain from commissioning to retrofit.

FAQ

What is the difference between a side load and a top load case packer?

A side load case packer pushes a collated group of products horizontally into an erected case; a top load case packer picks products and lowers them into an open case from above. The WIMACH CP-S50 uses side push loading, while the CP-T60 uses pick-and-place top loading. The distinction changes which product formats are practical, how the case is protected during loading, and how the pack pattern is built.

What carton size range does the CP-S50 handle?

The CP-S50 automatic side load case packer is specified for carton dimensions from 240 × 200 × 180 mm to 500 × 400 × 400 mm. Cartons outside that range fall outside the standard specification and require review with the manufacturer before they can be quoted as a standard configuration.

Which product formats and industries is the CP-T60 specified for?

The CP-T60 is an automatic top load case packer specified for carton case packing, with stated industry fit across food and beverage, pharmaceutical, tissue and hardware. Documented installations include tissue canister packing into cartons, tissue roll lines, and canister wet-wipe lines where the case packer operates as one station in a longer sequence.

Can the same case packer handle bottles, cans and bags as well as cartons?

The CP-S50's stated format scope covers cartons, boxes, bottles, cans and bags, so those formats fall within one side load model family, subject to the carton size envelope and a format trial. The CP-T60's stated scope is carton case packing. A plant running both cartons and bags should treat that as a two-model or reconfiguration question rather than assuming one machine covers both without verification.

What are the minimum order quantity and lead time for a customised case packer?

WIMACH states an MOQ of 1 set. Lead time is 30–45 days for the Customized Machinery Service route and 15–45 days for the OEM/ODM route, with customisation available on packaging dimensions, machine configuration, voltage and logo. Delivery terms offered are FOB, FCA, CIF and CFR, with payment by T/T.

What acceptance testing is performed before a case packer ships?

The stated quality control sequence covers nine checks: no-load and load running test, dimensional tolerance inspection, mechanical assembly check, pneumatic leakage test, electrical safety test, PLC control logic test, safety interlock and E-stop test, long-time aging test, and surface appearance inspection. Factory acceptance testing is the stated acceptance criterion. The load running test is the step that validates the customer's own case and product rather than only the machine assembly.

How should a buyer validate a new format before committing to a case packer order?

Validation requires the physical case and the physical product. The format should be checked against the machine's stated carton envelope, the pack pattern confirmed for count and orientation, the product's behaviour under the chosen loading principle assessed, and the result recorded during the load running test. Where a format sits outside a model's stated scope, the correct step is a specification review with the manufacturer, not an assumption that the machine will adapt.