--- title: "Automatic Paper Hole Cleaning Machine for Hang Tags & Labels: Complete Guide" date: 2026-09-20T07:40:03Z modified: 2026-09-20T07:47:15Z permalink: "https://www.qdblanking.com/blog/automatic-paper-hole-cleaning-machine-hang-tags/" type: post status: publish excerpt: "" wpid: 368 categories: - Blog featured_image: "https://www.qdblanking.com/wp-content/uploads/2026/09/Automatic-Paper-Hole-Cleaning-Machine-for-Hang-Tags-Labels-image-1-1.webp" timestamp: 2026-09-20T07:47:15Z tags: - Blog --- A hang tag comes off the die-cutter looking finished. The outline is cut, the crease is formed, and the thread hole is punched through the top corner. Then someone picks up the tag and finds a small disc of board still sitting inside that hole — held by two uncut fibres, flush with the surface, and invisible until a string is pushed at it. That disc is the reason an automatic paper hole cleaning machine exists. Leave it in and the tag cannot be strung, the label cannot be applied cleanly, and a loose chip of board turns up somewhere in the delivery. Pick it out by hand and you have created a repetitive job that is slow, hard on the wrists, and unforgiving on coated, laminated, or metallized stock. ![Industrial machine for cleaning paper holes](https://www.qdblanking.com/wp-content/uploads/2026/09/Automatic-Paper-Hole-Cleaning-Machine-for-Hang-Tags-Labels-image-1200x675.webp) ## What Is an Automatic Paper Hole Cleaning Machine? An automatic paper hole cleaning machine removes the small waste plugs left inside punched or die-cut holes in cards, tags, or labels — without separating the products first. The machine takes a pile of die-cut product, registers it, and drives a cleaning tool through the holes in one working cycle. The plugs are ejected into a waste path, and the stack leaves the machine with every hole clear, still collated and ready for stringing, threading, or application. That matters because a tag is a low-value item with a high handling cost: forcing the products apart before the holes are clear adds a re-stacking step to a job already thin on margin. ### Hole cleaning is not drilling A drilling machine makes the hole. A hole cleaning machine empties a hole that has already been made. The distinction matters because the two operations sit at opposite ends of the die-cutting stage. Thread holes for hang tags are usually drilled **before** die cutting, so the hole position is set against the printed sheet rather than against a cut outline. Drill after die cutting instead, and every hole inherits the registration error of the die-cutter — thread holes that should line up across a stack start to wander. The full sequence on a typical hang tag job runs: print → drill → die-cut → strip → clean holes → string. Two machines in that list are easy to confuse, and the model names do not help. The [HTDK-720 automatic drilling machine](https://www.qdblanking.com/product/htdk-720-automatic-drilling-machine/) makes the holes; the HTQK-720 clears them. ### Hole cleaning is not stripping Stripping removes the skeleton and the larger window waste from a die-cut sheet. It works at the scale of the sheet — a stripping die pushes out the matrix and the bigger internal offcuts, leaving the blanks sitting in what remains. Hole cleaning works at the scale of a single hole, which is often only 3–8 mm across. A stripping station has no reason to be tooled for that, and pushing it to handle very small apertures is usually the wrong answer. The two operations are complementary rather than competing: a plant running tags at volume typically uses a [stripping machine](https://www.qdblanking.com/product/htqf-1080-series-automatic-stripping-machine/) to clear the sheet, then a hole cleaning machine to finish the small apertures. Both sit inside the wider [other post-press equipment](https://www.qdblanking.com/wp-content/uploads/wp-mfa-exports/taxonomy/product_cat/other-post-press-machines.md) category alongside drilling. ## Why Hang Tags and Labels Need a Dedicated Cleaning Step Small holes are the hardest part of the sheet to clear well, for three reasons. **The plug has too little support to break on cue.** A die-cutter holds small internal pieces in place with nicks — deliberately uncut fibres that keep the plug in the sheet through handling and stacking. On a large window, those nicks are proportioned to the piece and break predictably. On a 5 mm hole, the same die design produces a plug that may release during the die-cut stroke, may survive stripping, or may hold until a worker attacks it with an awl. That variance is what makes the problem expensive. **The surface finish is at its most vulnerable.** Hang tags and labels are frequently coated, foiled, laminated, or metallized, because they carry branding and have to survive handling in a retail environment. Poking a plug out with a hand tool presses against the face of the product, and over a shift that produces the scuff marks and edge damage that surface as customer complaints rather than as scrap on the factory floor. **Every downstream step depends on the hole being clear.** Stringing machines, threading stations, and tag applicators all index on the hole. A single retained plug stops the machine, mis-feeds the string, or sends a defective tag through to packing. The real cost is not the plug — it is the unplanned stop two stations later, on a machine with far less tolerance for variation than a die-cutter has. The manual alternative also has a staffing dimension: clearing plugs by hand needs several people per shift across a multi-machine hall, it is monotonous, and turnover shows here early. Automation is not about replacing a craft skill; it is about deleting a task nobody can hold for a full shift. ## How a Pneumatic Inner Hole Cleaning Machine Works The machine is air-driven, and that is a deliberate design choice rather than a cost compromise. A stack of die-cut product is loaded into the working area, typically between 30 mm and 100 mm high. The stack is registered, and the cleaning tool is driven through the hole pattern in a single stroke. Compressed air drives the plug out of the hole and into the waste path, and the cycle repeats, at 8 to 20 cycles per minute depending on the product and the tooling. Because the tool only moves a plug a few millimetres, the force involved is small, so the machine runs directly from the shop air line. Electrical demand is correspondingly light — 0.5 kW — which matters in a hall where spare capacity on the distribution board is already spoken for. The practical consequences are worth stating plainly: - **It runs on shop air.** The machine needs a compressed-air supply at around 3 litres per minute. That supply is normally already in the building; no new hydraulic circuit is required. - **Start-up is quick.** There is no hydraulic reservoir to bring up to temperature, so the machine is ready to run shortly after the air is connected and the tooling is set. - **Maintenance is limited to what actually moves.** Air preparation — filters, regulators, and the line itself — plus the cleaning tool and the registration surfaces. - **The footprint is small.** Under a square metre of floor in the standard configuration, so it can sit at the end of a die-cutter rather than in a dedicated room. One point before you specify: this machine clears holes in stacked products. It is not a general waste-removal machine and does not replace the stripping stage. ## HTQK-720 Specifications The QIANDING HTQK-720 is a pneumatic inner hole cleaning machine built for die-cut paperboard products. Its published specification covers the working envelope in one table. | Item | Specification | | --- | --- | | Model | HTQK-720 | | Largest product size | 720 × 500 mm | | Minimum product size | 50 × 50 mm | | Work product height | 30–100 mm | | Working speed | 8–20 cycles per minute | | Air consumption | 3 L/min | | Power (pneumatic / hydraulic) | 220 / 380 V, 0.5 kW | | Machine dimensions | 800 × 650 × 1500 mm | | Net weight | 200 kg | | Package dimensions | 900 × 700 × 1700 mm | | Gross weight | 260 kg | The figure that surprises most buyers is the product size range. The same machine clears holes in a 50 × 50 mm tag and in a 720 × 500 mm sheet, because the tooling is set to the hole pattern rather than to the outer dimensions of the product. That range is what makes one machine viable for a plant running a mixed tag and label order book, instead of one machine per product family. The stack height range of 30–100 mm is the other number to check against your own workflow. It is set by how deep the cleaning tool can reach reliably, and it must match how the product arrives at the machine — a 30 mm stack and a 100 mm stack are different loading tasks on the same equipment. ## Sizing the Machine to Your Job Three inputs determine whether a given machine fits, and all three should come from your own job mix. **The hole itself.** Diameter and shape set the tooling. A 3 mm round hole and a 6 mm slot are different jobs, and a product carrying several aperture sizes in one layout needs a tool that handles them together. This is the first thing to bring to a supplier, and the detail most often left out of an enquiry. **The product envelope.** The HTQK-720 covers 50 × 50 mm up to 720 × 500 mm. Check both ends: the smallest product you expect to run matters as much as the largest, because a machine sized only for big formats may not index a small tag reliably. **The stack, and how it arrives.** Stack height between 30 mm and 100 mm decides the loading method. If your die-cutter delivers a full pile that then has to be broken down before feeding, count that manual step in the labour case — it is easy to specify a fast machine and then bottleneck it at the loading station. Working speed of 8–20 cycles per minute is stated as a cycle rate, not a piece rate, because the number of products per cycle depends on the tooling and the stack. Size the machine against your actual job, not the cycle rate. ## The Upstream and Downstream Steps Worth Planning Together Hole cleaning is one station in a chain, and the two neighbours are worth looking at before you commit to a layout. **Upstream — drilling.** If your product carries a thread hole, that hole is normally made before die cutting. Drilling the printed sheet first positions the hole against the printed image; drilling a die-cut tag positions it against a cut edge, and any registration drift in the die-cutter is inherited by the hole. The [HTDK-720 automatic drilling machine](https://www.qdblanking.com/product/htdk-720-automatic-drilling-machine/) is built for this order of operations, with a drilling diameter range of 3–8 mm and a paper size of 720 × 600 mm. **Upstream — stripping.** If your product arrives as a full die-cut sheet, the sheet has to be stripped before any individual hole can be cleaned. That work belongs to the [HTQF-1080 automatic stripping machine](https://www.qdblanking.com/product/htqf-1080-automatic-stripping-machine/) and the wider [blanking machine range](https://www.qdblanking.com/wp-content/uploads/wp-mfa-exports/taxonomy/product_cat/blanking-machine.md), which handle the skeleton and the larger internal waste. **Downstream — stringing and application.** Everything after cleaning indexes on the hole, so a hole that is 95% clear will still pass inspection and stop a threader. If you are automating more than one of these stages at once, design the sequence as a line rather than as a list of machines. [Custom stripping and blanking lines](https://www.qdblanking.com/wp-content/uploads/wp-mfa-exports/taxonomy/product_cat/custom-stripping-blanking-line.md) exist for that reason, and planning the waste paths at the same time avoids the common mistake of giving each machine an output the next one cannot accept. ## Manual Plug Removal vs Automatic Hole Cleaning | Consideration | Manual removal | Automatic hole cleaning | | --- | --- | --- | | Throughput | Limited by hand speed and fatigue; slows through a shift | 8–20 cycles per minute, held for the whole shift | | Staffing | Several people per shift across a production hall | One operator, shared across other tasks | | Consistency | Varies by operator, stock, and hour of shift | Set by the tool, so every stack is treated the same | | Surface risk | Hand tools press against the face of the product | Tool engages the hole, not the printed surface | | Changeover | Immediate — any product, any hole | Tooling must be matched to the hole pattern | | Best fit | Low volumes and long-tail products | Repeat work where the same holes recur | The honest reading of that table is that automation is not automatically the right answer. For a job that runs once a month in a few thousand pieces, a hand tool is cheaper and more flexible. The case for a machine builds where holes recur across a steady order book — the normal situation in a tag and label plant. ## What to Check Before You Buy 1. **The hole pattern.** Diameter, shape, and how many apertures appear on one product. This drives the tooling and should be the first question a supplier asks. 2. **The full product range**, at both the largest and the smallest format you expect to run. 3. **The stack height** you will actually present, and whether the pile needs breaking down first. 4. **The upstream process.** Confirm whether you drill before die cutting, and whether the sheet needs stripping before cleaning. 5. **Air supply.** Pressure and available flow at the point of installation, and whether the machine will share a line with other equipment. 6. **Power.** 220 V or 380 V, checked against the local supply. 7. **Waste path.** Where the ejected plugs go, and who empties it. 8. **Floor space and access.** The machine is compact, but loading and maintenance access still have to be planned. ## Maintenance and Day-to-Day Operation A pneumatic machine of this class has a short maintenance list, and most of it is about air quality rather than about the machine itself. Drain and check the air supply. Moisture and oil carry-over in a compressed-air line reach the tool and the valves, and they cause more faults on this class of machine than wear does. A filter-regulator unit at the machine, drained on a schedule, prevents most of them. Inspect the cleaning tool on a fixed interval, not when a hole fails. Tool wear shows up first as a plug that needs a second cycle to release — easy to miss on a busy line, expensive to discover at the threader. Keep the registration surfaces clean. Board dust accumulates on the surfaces that align the stack, and a build-up changes the relationship between the tool and the holes. Treat the tooling as a consumable with a specification: when the hole pattern changes, the tool changes with it. A spare tool for your highest-volume product is cheaper than an unplanned stop. ## Frequently Asked Questions **What size product can an automatic paper hole cleaning machine handle?** The HTQK-720 covers products from 50 × 50 mm up to 720 × 500 mm, with a working stack height of 30–100 mm. Tooling is matched to your hole pattern, so the outer product dimensions are not the limiting factor they are on some equipment. **Does it handle labels as well as hang tags?** Yes. It works on any die-cut paperboard product — tags, labels, tags with punched openings, and small-format cartons. Cigarette packs and cosmetic boxes are common applications. **Can I use it instead of a stripping machine?** No. Stripping removes the skeleton and the larger sheet waste; hole cleaning removes the plugs left inside individual small apertures. They are different operations at different scales, and sheet-fed die-cut work needs both. **Does it need a hydraulic power unit?** No. The HTQK-720 is pneumatic. It runs from a compressed-air supply at around 3 L/min, with a total electrical demand of 0.5 kW — which is why it can be installed on a normal shop air line and a light power drop. **Should I drill before or after die cutting?** For thread holes and any hole that must align with the printed image, drill first. Drilling the printed sheet sets the hole against the print; drilling after die cutting sets it against a cut edge and inherits any die-cutting registration drift. **How fast is it?** Published working speed is 8–20 cycles per minute. Pieces per cycle depend on the tooling and the stack, so confirm throughput against your own product rather than assuming it from the cycle rate. **What does it cost?** Price depends on the machine configuration and, most of all, on the tooling for your hole pattern. Send the hole sizes, product range, and a die-cut sample stack for a configured figure rather than a list price. ## Getting a Configured Recommendation A hole cleaning machine is specified, not selected from a catalogue. The variable that decides the outcome is not the machine model — it is the tooling built for your hole pattern, and that only exists once someone has seen the job. Send three things and the recommendation can be made against real numbers: the hole diameters and shapes on your product, the smallest and largest formats you run, and a die-cut sample stack or layout drawing. That is enough to confirm the tooling, the throughput, and whether the machine belongs upstream or downstream of your existing stripping step. You can start with the [HTQK-720 inner hole cleaning machine](https://www.qdblanking.com/product/htqk-720-inner-hole-cleaning-machine/), pair it with the [HTDK-720 automatic drilling machine](https://www.qdblanking.com/product/htdk-720-automatic-drilling-machine/) if you still make holes by hand, or review [other post-press equipment](https://www.qdblanking.com/wp-content/uploads/wp-mfa-exports/taxonomy/product_cat/other-post-press-machines.md) and the full [product range](https://www.qdblanking.com/products/) to see how the stage fits the rest of the line. The machines are built on a 25,000 m² production base with in-house component machining and full export documentation — the [manufacturing](https://www.qdblanking.com/manufacturing/) and [certificates](https://www.qdblanking.com/certificates/) pages cover both. [Request a quotation](https://www.qdblanking.com/contact-us/) with your hole sizes and product range, and the reply will be a tooling recommendation rather than a general brochure.