How to Troubleshoot Common Issues in Glue Binding Machines?
2025-09-18
1. Introduction
This article addresses 8 common problems (e.g., weak bonds, glue leaks, page jams) in EVA, PUR, and cold glue binding machines. It offers easy troubleshooting steps. It also gives advice on when to replace a machine instead of fixing it. Additionally, it includes links to extra guides, like machine types, and suggests models to help with decision-making.
2. Glue Binding Machine Troubleshooting Details (Table Format)
1) Common Issues for All Glue Binding Machines
| Issue | Causes | Fix glue binding machine issues solutions |
|---|---|---|
| Weak or Loose Bindings | 1. Insufficient glue heating (hot melt machines) 2. Misaligned pages 3. Too thin glue application |
1. Preheat to correct temp (EVA: 150-180°C; PUR: 120-140°C). 2. Align pages (tap edges, use paper clips for thick stacks). 3. Apply a second thin glue layer; let set as recommended. |
| Pages Jamming | 1. Stack thicker than machine’s max capacity 2. Excess clamp pressure 3. Dried glue blocking the slot |
1. Reduce stack size (desktop: ≤50 sheets; commercial: ≤200 sheets). 2. Lower clamp pressure to "Medium". 3. Turn off machine; wipe dried glue (PUR cleaner for PUR; alcohol for EVA). |
2) Issues Specific to Machine Types
| Machine Type | Issue | Causes | Solutions |
|---|---|---|---|
| EVA Hot Melt | Glue Not Melting | 1. Loose/damaged power cord 2. Broken heating element 3. Expired glue sticks |
1. Re-plug cord; test outlet with another device. 2. Replace heating element (contact support). 3. Use new EVA glue sticks. |
| PUR | Glue Leaking from Nozzle | 1. Incorrect cartridge installation 2. Unclean nozzle (from last use) 3. Excess clamp pressure |
1. Re-install cartridge (ensure it clicks into place). 2. Clean nozzle with PUR cleaner (machine at 60-70°C). 3. Lower clamp pressure to "Medium". |
| Cold Glue | Glue Taking Too Long to Dry | 1. High humidity 2. Low glue in tank 3. Expired cold glue |
1. Use a dehumidifier (ideal humidity: 30-50%). 2. Refill tank to "Max" line. 3. Replace glue (shelf life: 6 months unopened). |
3) When to Replace the Machine
Replace your glue binding machine if:
- It is over 5 years old (replacement parts are hard to source).
- Repair costs exceed 50% of a new machine (e.g., a broken industrial EVA heater).
- It cannot handle your current workload (e.g., a desktop machine binding 200+ sheets daily—upgrade to a commercial model).
For help choosing a replacement: Refer to the guide What Types of Glue Binding Machines Are There in the Market?
4) Pro Tips to Prevent Future Issues
4) Pro Tips to Prevent Future Issues
- Clean the machine after every use (dried glue causes jams).
- Use only compatible glue (EVA for EVA machines; PUR for pur glue machine problems—generic glue damages parts).
- Store glue properly:
EVA sticks: Cool, dry place.
PUR cartridges: Refrigerate (follow storage instructions for recommended cartridges). - Never exceed the machine’s max sheet capacity (overloading breaks the clamp and motor).
5. Conclusion
Most issues with glue binding machines are easily fixable (e.g., adjusting temperature, cleaning nozzles). For unresolved problems (e.g., a PUR machine failing to preheat), contact support. Designers create recommended models (e.g., Commercial PUR Machine – Model C3) to minimize common issues. To learn proper operation: Refer to the guide How to Operate a Glue Binding Machine Step by Step.
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