Product Overview

The KR‑425 coefficient‑of‑friction (COF) analyser quantifies static friction coefficient and kinetic sliding‑friction coefficient for flexible sheet‑form substrates. Typical test samples include plastic films, plastic sheets, various grades of paper and paper‑board materials. By simulating surface‑to‑surface sliding movement under controlled laboratory circumstances, the equipment delivers objective numerical indicators for surface slip‑behaviour.

These test results help packaging and paper manufacturers assess material running performance on high‑speed production machinery, anti‑blocking property and stacking stability. This desktop tester satisfies GB 10006‑88, ISO 8295, TAPPI T816 and ASTM D 1894‑01 standard requirements. It finds wide‑spread application in flexible‑film factories, paper‑making plants, packaging‑material R&D departments and accredited third‑party material‑testing laboratories.

Core Product Competitive Advantages

1. Low‑Noise Servo‑Driven Motion System High‑performance servo‑motor governs horizontal table movement. It provides smooth, low‑vibration sliding motion with precise speed regulation. Mechanical noise remains low during long‑duration continuous batch‑sample testing and minimises external disturbance to force‑sensor readings.
2. Large‑Size Colour Touch‑Screen Human‑Machine Interface Intuitive graphic touch‑panel visualises real‑time force data and test progress. Operators configure test‑speed and batch‑repetition parameters via on‑screen menus without complex keypad combinations.
3. Built‑In Automatic Statistical Calculation Upon completion of multi‑specimen group testing, the unit automatically computes key outputs including individual static / kinetic COF values, arithmetic mean and standard‑deviation for data consistency evaluation. It removes manual spreadsheet calculation workload for QC‑lab technicians.
4. Full‑Set Automatic Safety & Workflow Functions Integrated automatic slider‑home‑return routine after each completed test cycle. Hardware‑level overload protection safeguards high‑precision load‑cell against accidental force‑surge damage. The whole sequence of motion control, signal acquisition and numerical computation runs autonomously.
5. Standard RS232 Serial‑Data‑Communication Port Reserved serial‑interface enables stable data transmission to upper‑level host‑computer systems. Users can import raw test datasets for further curve plotting, batch‑report generation and long‑term quality‑data archiving.

Complete Technical Parameter Table

Standard Complete Test Operating Workflow

1. Pre‑Test Preparation Place instrument on flat, vibration‑free laboratory bench. Power‑on and allow system self‑check. Cut film / paper specimens to standard dimensions, condition samples under specified temperature‑humidity environment. Configure sliding‑speed settings on touch‑screen according to target test‑standard.
2. Specimen Mounting Secure one test‑piece flat onto the instrument’s horizontal test‑table; fasten the matching counterpart‑material sample onto the bottom surface of standard slider assembly. Ensure surfaces are clean and wrinkle‑free before starting measurement.
3. Automatic Friction‑Coefficient Measurement Lower slider assembly into contact position. Trigger test‑start command. Servo‑driven table moves horizontally at preset velocity. The system continuously captures force‑signals to calculate static‑COF at the moment of motion‑onset and kinetic‑COF during stable sliding phase. After measurement finishes, table automatically returns to home‑position.
4. Data Review & Export Read static‑friction and kinetic‑friction coefficient values directly from screen. Run repeated tests for batch‑samples to obtain average and standard‑deviation results. Transmit datasets to external PC via RS232 interface for report‑making and file‑storage.
5. Post‑Test Tidying Lift slider assembly, remove tested specimens. Clear dust and residual debris from test‑table and slider contact‑surface. Shut‑down main power after finishing all test batches. Perform periodic sensor‑verification calibration.

Wide Industrial Application Scenarios

Flexible‑Packaging Film Manufacturers

Friction‑property QC for food‑packaging plastic‑films, composite‑membranes; evaluate running stability on form‑fill‑seal packaging production‑lines.

Pulp‑Paper & Paper‑Board Production Plants

Surface‑slip‑performance testing for printing‑paper, packaging base‑paper and coated board; analyse stacking‑anti‑slip characteristics for finished‑paper products.

Polymer‑Material R&D Departments

Performance comparison for newly‑developed polymer‑film formulations; assess effectiveness of slip‑agent and anti‑blocking‑additive formulas.

University Material‑Science Laboratories

Teaching‑experiment apparatus for polymer‑and‑packaging‑majors for surface‑tribology research.

Third‑Party Accredited‑Testing‑Organizations

Carry‑out GB / ISO / ASTM / TAPPI‑compliant friction‑coefficient assessment and issue formal inspection‑documents for product‑certification audits.

Standard Factory‑Full‑Delivery Kit

1. KR‑425 friction‑coefficient‑tester main‑unit
2. Standard 200g test slider assembly (63 × 63 mm)
3. RS232 serial‑data‑communication cable
4. Power‑supply cable
5. Multilingual printed‑operation‑manual complying with GB10006‑88, ISO8295, ASTM D1894‑01, TAPPI T816
6. Factory‑issued performance‑inspection‑certificate

Global Distributor & After‑Sales‑Support

We provide remote‑one‑on‑one operational guidance covering speed‑parameter setup, specimen‑mounting procedure and routine calibration notes. Spare‑parts stock includes force‑sensor modules and slider‑accessories. 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‑425 COF Tester | Horizontal‑Plane Static & Kinetic Friction‑Coefficient Analyser For Plastic‑Film‑Paper‑Sheet Materials

Core‑Feature‑Labels‑For‑Product‑Images

Servo‑Motor Low‑Noise Drive | Colour Touch‑Screen UI | Auto‑Calculate Mean‑&‑Standard‑Deviation | Auto‑Return‑Home & Overload‑Protection | RS232 PC‑Data‑Interface | Complies GB‑ISO‑ASTM‑TAPPI Standards | Desktop Compact‑Layout

Safety‑Operation‑Reminder

Do not place hands beneath moving slider‑and‑table assembly during test cycles. Keep test‑table contact‑surface clean and scratch‑free. Conduct regular sensor‑calibration to guarantee measuring‑data reliability.