KR‑2705 Series Wet‑Scrub Abrasion & Surface Washability Tester
Digital Wet Scrub Abrasion Washability Resistance Tester for Paints and Coatings
The instrument is mainly used to measure the wear resistance, brush resistance, and wash resistance of various materials. It can be used for wash resistance tests under dry and wet conditions. The touch screen control is widely used in waterborne coatings.
Product Details：
Product Overview
The KR‑2705 multi‑model wet‑dry scrub resistance analyser is purpose‑built lab apparatus for evaluating surface anti‑scrubbing performance of architectural paints, functional coatings and multiple substrate materials. It reproduces repeated mechanical rubbing encountered in real‑world cleaning scenarios, supporting both dry‑mode abrasion assessment and wet‑scrub test with detergent solution delivery.
Different interchangeable rubbing attachments including standard nylon bristle brushes, sponges and scouring pads can be fitted. Under calibrated vertical load, the reciprocating linear movement generates consistent wear effect. Operators record reciprocating cycles until coating film peels off, substrate gets exposed or predefined cycle target is achieved. This equipment fully complies with ASTM D2486, ASTM D3450, ASTM D4213, ISO 11998, DIN 53778, EN 12956, GB/T 9756‑2018 and GB/T 9780‑2013 standardsAlibaba.co…. Three variants (KR‑2705A / KR‑2705B / KR‑2705C) are available to satisfy varied sample‑throughput and automation‑level demands for coating factories, R‑D labs and accredited testing institutions.
Core Product Competitive Advantages
- Three‑Variant Modular Product Portfolio for Diverse‑Lab‑Needs
- KR‑2705A: Basic digital‑display edition with fixed 37±1 cycles/min, supporting up to 2 friction heads.
- KR‑2705B: High‑end touch‑screen dual‑drive model, maximum 4 friction heads, independently‑controlled dual‑peristaltic‑pump liquid‑supply, adjustable reciprocating‑speed from 1‑65 cycles/min for high‑volume batch‑testing.
- KR‑2705C: Compact touch‑screen version, 1‑drive structure, single‑peristaltic‑pump, 37±1 cycles/min, balancing cost and standard‑compliant test capacity.
Customers select proper configuration according to daily‑sample‑quantity and budget constraints.
- Precision Peristaltic‑Pump Liquid‑Feeding System
Peristaltic‑pump assembly conveys scrubbing detergent liquid onto rubbing‑head position without fluid‑contamination risk. Liquid output can be switched on/off and flow‑rate precisely regulated during test run, faithfully simulating real‑world wet‑cleaning conditions for coating washability evaluation.
- Rich‑Selection of Standard‑Compliant Interchangeable Rubbing‑Fixtures
The system accepts multiple test consumables: standard nylon brush blocks, sponge assemblies, scouring‑pad holders and fabric‑clamp modules. Quick‑swap fixture‑design supports test‑method switching among ASTM, ISO, DIN national‑standard protocols without complex tool‑disassembly. Standard 450 g calibrated friction load guarantees stable downward pressure upon specimen surface.
- Intelligent Control & Stable Reciprocating‑Motion Mechanism
High‑reliability air‑cooled drive‑motor delivers smooth linear‑reciprocating stroke up to 300 mm. Five‑digit cycle counter records test strokes up to 99 999 cycles. Unit automatically stops once reaching preset cycle‑value, lowering manual‑supervision workload. Touch‑screen‑equipped models store common‑used test‑parameter presets for rapid recall.
- Flexible Specimen‑Clamping Layout & Broad‑Sample‑Compatibility
Heavy‑duty sample‑clamps firmly fasten test‑panels with thickness ranging 0‑25 mm. It adapts to paint‑coated panels, leather sheets, wood boards, plastic plates and printed‑fiber‑materials. Compact benchtop footprint saves valuable laboratory counter‑top area.
Complete Technical Parameter Table
| Parameter Item | KR‑2705A | KR‑2705B | KR‑2705C |
|---|---|---|---|
| Reciprocating Scrub Speed | 37±1 cycles/min | 1‑65 cycles/min stepless adjustable | 37±1 cycles/min |
| Max Preset Cycle Count | 99 999 cycles | 99 999 cycles | 99 999 cycles |
| Acceptable Sample Thickness | 0‑25 mm | 0‑25 mm | 0‑25 mm |
| Quantity of Friction‑Heads | 1‑2 units | 1‑4 units | 1‑2 units |
| Human‑Machine Interface | LCD digital display | Colour touch‑screen, dual‑independent‑drive | Colour touch‑screen, single‑drive |
| Liquid‑Supply Module | Optional single‑peristaltic‑pump | Dual‑peristaltic‑pump, 0‑240 mL/min each | Single peristaltic‑pump |
| Standard Friction Load | 450 g | 450 g | 450 g |
| Effective Scrub Stroke | 300 mm | 300 mm | 300 mm |
| Power‑Supply | 110 V / 220 V, 50/60 Hz | 110 V / 220 V, 50/60 Hz | 110 V / 220 V, 50/60 Hz |
| Overall Dimension (A‑Model) | 580 × 480 × 300 mm | Custom dimension | Custom dimension |
| Approximate Gross Weight | 40 KG | Subject to configuration | Subject to configuration |
Compliance Standards: ASTM D2486, ASTM D3450‑15(2020), ASTM D4213, ISO 11998:2006, DIN 53778, EN 12956, GB/T 9756‑2018, GB/T 9780‑2013Alibaba.co…
Standard Complete Test Operating Workflow
- Pre‑Test Preparation
Position instrument on stable horizontal lab‑bench, secure power‑supply connection. Install matched rubbing‑fixture (brush / sponge / scouring‑pad) as per applicable‑standard. Prepare coated‑test‑panels which have completed curing procedure. Fill detergent‑solution into liquid reservoir, connect peristaltic‑pump tubing. Set target scrub‑cycle count, activate or deactivate liquid‑delivery function on control‑panel.
- Specimen Securing
Place conditioned test‑panel onto sample‑base platform, tighten side clamping‑levers to keep sample flat and immobile. Mount calibrated 450 g counter‑weight onto friction‑head assembly. Adjust fixture height to ensure rubbing‑medium closely contacts specimen surface.
- Initiate Abrasion‑Scrub Test
Trigger start‑command. Machine carries out stable back‑and‑forth linear scrubbing motion. If wet‑test mode is enabled, peristaltic‑pump feeds cleaning‑liquid to rubbing‑zone continuously throughout cycles. Operators can observe surface‑change status during running‑process.
- Automatic Termination & Result Assessment
When reaching preset cycle‑quantity the machine stops automatically. Take‑out specimen, inspect coating‑surface for film‑breakage, substrate‑exposure, peeling or obvious wear‑loss. Record failure‑cycle‑number or conduct film‑thickness‑loss measurement according‑to‑standard requirements. Perform multiple parallel‑specimen tests for statistical‑reliability.
- Post‑Test Tidying
Remove test‑panel, detach rubbing‑fixture assembly. Clear residual paint‑chips and dirt fragments. Flush pump‑tubing to avoid detergent‑crystal‑deposition. Shut‑off main‑power‑supply after finishing‑all‑test‑batches. Periodically inspect brush‑bristle wear‑status and tubing ageing‑condition, replace consumables timely.
Wide Industrial Application Scenarios
Architectural‑Coating & Water‑Based‑Paint Manufacturers
Anti‑scrub and wash‑resistance QC for interior‑wall coatings; compare formulation difference of raw‑materials, optimise paint formula in new‑product‑development cycles.
Printing‑Ink, Leather & Furniture‑Material Factories
Surface‑wear‑performance evaluation for printed‑layers, leather‑finish films, wood‑surface‑coating and plastic decorative‑layers.
R‑D Departments For New‑Surface‑Materials
Carry‑out comparative‑abrasion trials for varied coating‑formulas, cleaning‑agent‑formulations, assess stain‑removal performance under wet‑scrub conditions.
University Material‑Science & Chemical‑Engineering Laboratories
Special‑purpose teaching‑research‑instrument for studying coating‑film mechanical‑wear‑and‑failure‑mechanisms.
Third‑Party Accredited‑Coating‑Testing‑Organizations
Execute multi‑standard‑compliant wet‑dry scrub‑abrasion assessment and issue formal inspection‑reports for coating‑product‑certification‑audits.
Standard Factory‑Full‑Delivery Kit
- KR‑2705 series wet‑scrub washability‑tester main‑unit (select A/B/C model as per purchasing‑order)
- Standard‑spec nylon‑bristle brush assemblies, sponge holders and scouring‑pad fixture‑components
- 450 g standard calibrated friction‑load‑weight set
- Complete‑set sample‑clamping‑mechanism
- Peristaltic‑pump liquid‑supply assembly (matching corresponding‑model configuration)
- Power‑supply connecting‑cable
- Multilingual printed‑operation‑manual complying with ASTM‑ISO‑DIN‑GB relevant‑coating‑standards
- Factory‑issued performance‑inspection‑certificate
Optional spare‑parts: extra replacement brushes, sponges, pump‑tubing, custom‑spec friction‑blocks.
Accessory:
Global Distributor & After‑Sales‑Support
We provide remote‑one‑on‑one operational guidance covering fixture‑swap, liquid‑flow‑adjustment, parameter‑setting and consumable‑replacement guidance. Spare‑parts stock includes rubbing‑heads, pump‑tubing and control‑module accessories. Bulk‑order customers can apply for custom‑power‑supply‑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‑2705 Series Wet‑Scrub Abrasion Washability Tester | ASTM‑ISO‑DIN‑GB‑Compliant Multi‑‑Model Analyser For Paint‑Coating‑Leather‑Plastic Surface‑Anti‑Scrub‑Performance‑Evaluation
Core‑Feature‑Labels‑For‑Product‑Images
Three‑Model A/B/C Optional | Max 4‑Friction‑Heads | 300 mm Long‑Reciprocating‑Stroke | Precision Peristaltic‑Pump Liquid‑Delivery | Interchangeable Brush‑Sponge‑Scour‑Pad Fixtures | Standard 450g Calibrated‑Load | Up‑to‑99999 Programmable‑Cycle‑Counter | Auto‑Stop Upon Target‑Cycle | Touch‑Screen / Digital‑Display Options | Dry‑&‑Wet Dual‑Test‑Mode | Multi‑Global‑Coating‑Standard‑Compliant
Safety‑Operation‑Reminder
Keep fingers away from reciprocating‑rubbing‑head moving‑zone during equipment‑running. Secure specimens tightly before starting test‑run. Avoid detergent‑liquid infiltration into internal electrical‑components. Regularly check bristle‑wear of brushes and replace severely‑worn consumables to guarantee test‑result repeatability.
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