KR‑426 Ink Rub & Decolour Resistance Tester

Product Overview

The KR‑426 ink rub resistance tester is a dedicated lab instrument to assess the anti‑abrasion performance of printed ink layers. It simulates real‑world friction conditions occurring during stacking, transit and handling of printed goods. Under defined load and reciprocating‑stroke motion, the unit performs dry‑rub and wet‑rub tests to evaluate ink‑layer adhesion, anti‑scuff and anti‑decolouring properties on paper, cardboard and colour carton substrates.

The equipment meets GB/T 7705‑2008, GB/T 7706‑2008, ISO and ASTM‑related printed‑matter evaluation requirements. It is widely used by printing plants, ink‑manufacturing enterprises, packaging‑material factories, R&D laboratories and accredited third‑party testing institutions for incoming‑material validation, process adjustment and finished‑product quality auditing.

Core Product Competitive Advantages

1. Four‑Speed‑Grade Adjustable Reciprocating Friction Drive Motor‑driven linear reciprocating friction mechanism provides four selectable stroke frequencies: 21, 43, 85, 106 cycles per minute. Operators can pick suitable speed settings for different ink formulas and substrate materials to match diverse test‑specification requirements.
2. Dual‑Standard Friction‑Weight Configuration Supports two standard loading weights: 908 g (2 lbs) and 1810 g (4 lbs). Change‑over between loads is fast without complex tools, covering light‑pressure gentle‑rubbing and heavy‑load severe‑abrasion test scenarios.
3. Programmable Digital Cycle Counter LED digital counter allows users to preset target friction cycles within the 0‑9999 range. The machine will automatically halt once the set stroke number is reached, avoiding manual timing errors and simplifying unattended test‑run workflows.
4. Reliable Mechanical‑Clamping Sample Stage Adjustable locking fixtures firmly secure printed‑sample sheets. It accommodates specimens up to 60 × 200 mm in dimension and prevents sample shifting during high‑speed reciprocating friction, ensuring stable and repeatable test outcomes for batch‑sample evaluation.
5. Compact Robust Bench‑Top Cabinet Build Solid metal cabinet‑style construction guarantees long‑term continuous‑operation stability. Start‑stop physical push‑buttons plus speed‑selector knob deliver straightforward operation; lab staff can master routine operation with minimal training.

Complete Technical Parameter Table

Standard Complete Test Operating Workflow

1. Pre‑Test Preparation Place instrument on level lab workbench. Power‑on the unit. Cut printed test‑specimens and friction medium paper to standard sizes. Select target friction weight and set appropriate friction‑speed via adjustment knob. Input desired test‑cycle number on digital counter.
2. Specimen & Friction‑Paper Mounting Fix the printed sample flat onto the machine’s sample‑holding platform. Secure friction‑medium paper onto the friction‑head block; make sure both are tightly clamped to avoid slippage during reciprocating movement.
3. Execute Automatic Rubbing Test Press start button to launch test sequence. Friction‑head carries out linear back‑and‑forth rubbing according to preset parameters. Equipment stops automatically once reaching pre‑programmed cycle quantity.
4. Result Observation & Assessment Take‑out specimen and friction‑medium paper. Visually inspect ink transfer, decolouring, scuff‑mark and ink‑layer peeling conditions. Record test‑phenomenon for quality grading and comparison among different batches.
5. Post‑Test Tidying Remove tested sample and used friction‑paper. Clean friction‑head and sample‑stage surface. Reset counter value. Shut‑down power supply after finishing all test batches.

Wide Industrial Application Scenarios

Commercial Printing & Packaging Factories

Evaluate anti‑rub performance for colour‑printed cartons, labels, brochures and packaging printed‑matter; verify finished‑goods quality before shipment.

Ink Manufacturing Enterprises

Formula‑comparison testing for new‑developed printing‑ink products; assess ink adhesion and anti‑decolouring property for product‑grade classification.

Paper‑and‑Printing‑Material R&D Departments

Carry‑out comparative tests for different printing‑process parameters, supporting production‑process optimisation work.

University Graphic‑Arts Laboratories

Teaching‑experiment equipment for printing‑technology‑related majors.

Third‑Party Accredited‑Testing‑Organizations

Perform GB / ISO / ASTM‑compliant ink‑rub‑resistance evaluation and issue formal inspection‑documents for product‑certification audits.

Standard Factory‑Full‑Delivery Kit

1. KR‑426 ink‑rub‑resistance‑tester main‑unit
2. Two sets of standard friction weights: 2 lbs and 4 lbs
3. Sample‑clamping fixture assemblies
4. Power‑supply cable
5. Multilingual printed‑operation‑manual complying with GB/T 7705‑2008, GB/T 7706‑2008
6. Factory‑issued performance‑inspection‑certificate

Global Distributor & After‑Sales‑Support

We provide remote‑one‑on‑one operational guidance covering weight‑replacement, speed‑selection and specimen‑clamping workflows. Spare‑parts stock includes friction‑head accessories and counter‑module components. Bulk‑order customers can request custom‑voltage variants for overseas‑market deployment. Regional‑exclusive‑agent privileges contain priority‑production‑scheduling, OEM private‑branding‑services and complete‑set high‑definition product‑marketing‑image‑resources.

Product‑Banner‑Marketing‑Slogan

KR‑426 Ink Rub‑Resistance Tester | Reciprocating‑Friction Instrument For Printed‑Ink Anti‑Scuff & Decolouring‑Performance Testing

Core‑Feature‑Labels‑For‑Product‑Images

Four‑Speed‑Adjustable Reciprocating‑Rub | Dual‑Standard 2LB / 4LB Friction‑Weights | 0‑9999 Preset‑Cycle Auto‑Stop | Reliable Specimen‑Clamping Stage | LED Digital‑Count‑Display | Compact Bench‑Top Cabinet | GB‑ISO‑ASTM‑Compliant

Safety‑Operation‑Reminder

Keep hands away from moving friction‑head zone while equipment is running. Check clamping fixtures are locked tight before starting each test‑cycle. Keep platform surface free of paper scraps and ink residues.