| Basic Manual Rub Tester | Routine comparison of printed samples in small laboratories and production areas | Approximately 2–20 N, using interchangeable weights | Fixed stroke; typically 60–100 mm per cycle at a controlled manual or low-speed drive rate | Coated paper, labels, folding cartons, commercial print samples | Stable sample clamping, repeatable stroke length, smooth carriage movement, visible counter | Use the laboratory method specified for the product; ASTM D5264 or an equivalent internal procedure may be suitable when applicable | Condition samples before testing, align the print area with the rubbing path, and use the same load and number of cycles for every comparison | Clean the carriage and specimen platform daily; inspect fasteners and weights weekly; verify stroke length at least every six months | Suitable for entry-level quality control when test volume and automation requirements are low |
| Motorized Dry-Rub Tester | Repeatable dry-rub testing for commercial printing, packaging, and ink development | Approximately 2–20 N, with calibrated load selection | Usually 60–100 mm stroke; adjustable speed commonly about 20–100 cycles per minute | Paperboard, coated paper, films, flexible packaging, printed labels | Constant speed, accurate cycle counting, parallel rubbing head, repeatable pressure application | ASTM D5264 may be used for printed materials when its scope and sample configuration are appropriate; follow customer or internal specifications where required | Run a blank movement check before testing, confirm the programmed cycle count, and avoid touching the printed test zone during setup | Remove paper dust after each shift; lubricate approved moving points according to the service schedule; check load accuracy and speed annually | Best general-purpose choice for laboratories that need reliable repeatability without complex automation |
| Wet-Rub and Dry-Rub Combination Tester | Evaluating ink resistance to water, damp wiping, and dry friction | Approximately 2–20 N, depending on the selected rubbing head and method | Adjustable stroke commonly 60–100 mm; controlled reciprocating motion | Water-based inks, packaging prints, coated stocks, paper products, varnished surfaces | Controlled liquid application, leak-resistant fluid tray, consistent rubbing medium, easy cleaning | Use the relevant customer, ink-system, or laboratory method; do not assume a dry-rub standard covers wet-rub conditions | Measure and record the liquid volume, use fresh rubbing material for each defined test series, and prevent liquid from entering the drive mechanism | Rinse and dry wet-contact parts immediately; inspect seals and trays weekly; check for corrosion and verify liquid delivery monthly | Preferred when both dry and moisture-related print durability are important |
| High-Cycle Production Tester | High-throughput quality control and process monitoring on production lines | Approximately 5–30 N, subject to the approved test method | Programmable stroke and speed; commonly up to 100–150 cycles per minute | Cartons, paper bags, decorative laminates, high-volume printed packaging | Long-term drive durability, overload protection, automatic cycle counting, emergency stop, data logging | Apply the documented plant method and verify that load, stroke, speed, and rubbing medium match the required specification | Use a written setup checklist, run a control sample at the start of each shift, and quarantine results if the control value is outside its acceptance range | Inspect belts, bearings, clamps, and electrical connections monthly; perform preventive servicing at the interval defined by operating hours | Recommended for frequent testing where downtime, operator variation, and traceability are major concerns |
| Instrumented Rub Tester | Research, method development, failure analysis, and comparative material studies | Approximately 1–30 N with load measurement or load verification capability | Programmable stroke, speed, dwell time, and cycle count; profile depends on the test method | Printed films, specialty coatings, security print, labels, synthetic substrates | Force monitoring, digital records, programmable profiles, repeatability data, exportable test results | Use the applicable standard or validated internal method; document all deviations from the reference procedure | Save a controlled test recipe, record substrate direction and conditioning details, and include raw observations with numerical results | Verify force sensors and motion parameters at defined intervals; protect the instrument from dust, vibration, humidity, and unauthorized profile changes | Best for laboratories requiring traceable results, method validation, and detailed root-cause analysis |
| Compact Portable Tester | Incoming inspection, field audits, supplier checks, and limited-space workstations | Typically 2–15 N with a compact weight or spring-loading system | Short to medium fixed stroke; speed may be manual or limited by the compact drive system | Labels, cartons, paper samples, printed promotional materials | Low weight, secure transport, simple setup, robust clamping, clear operating instructions | Use only with a validated portable procedure and maintain consistent environmental conditioning during comparisons | Place the unit on a stable level surface, verify the load after transport, and avoid testing samples that exceed the platform size | Store in a dry protective case; clean contact surfaces after use; inspect the clamp and load components before every field visit | A practical option for screening and audits, but laboratory confirmation may be needed for disputed results |
| Custom Multi-Station Tester | Parallel testing of multiple samples or specialized production materials | Commonly 2–30 N per station, configured for the approved method | Independent or synchronized stations; programmable cycle counts and controlled motion | Large packaging runs, multi-layer boards, specialty coated materials, comparative ink systems | Station-to-station uniformity, independent counters, easy specimen replacement, synchronized operation | Validate each station against the selected method before routine use; document station identification in the test record | Randomize sample positions when appropriate, compare station control results, and stop testing if one station shows abnormal friction or movement | Clean every station, inspect all rubbing heads, and perform a station-to-station verification at least quarterly or after repairs | Appropriate for high sample volumes and laboratories that need to reduce testing time without sacrificing control |
