KR‑851 Laboratory Two‑Roll Textile Calendering Finishing Machine

Category 6. Textile Testing Machine

Additional information

RT-851 Automatic Calender Laboratory Textile Roll Calendering Machine

Fabric calender, also known as textile calendering machine. A process of fabric finishing. The use of fibers in high pressure or high temperature conditions of physical plasticity of the fabric surface flat or rolled out patterns to increase the smoothness of the fabric finishing process. According to the roll surface material, rolling pressure, temperature, different soft, hard roll combination and wear cloth, can obtain different calendering effect.

Product Details：

Product Overview

The KR‑851 pilot‑scale two‑roll textile calendering simulator is dedicated lab‑scale finishing equipment for woven, knitted and blended fabrics. It leverages fibre thermal‑plastic characteristics under combined heat, pressure and mechanical friction to reproduce real‑factory calendering effects. By adjusting roller pressure, processing temperature and line speed, users obtain diversified surface performances including fabric flattening, gloss enhancement and heat‑transfer printing effects.

This bench‑simulation unit reproduces large‑scale production finishing conditions within laboratory settings. It helps textile‑formulation engineers evaluate finishing‑agent recipes, optimise process parameters and pre‑verify finished‑fabric hand‑feel and surface appearance before mass‑production roll‑out. It is widely adopted by textile‑dyeing‑finishing factories, textile‑material R‑D centres, textile colleges and third‑party textile‑process‑research‑laboratories.

Core Product Competitive Advantages

Specialised Dual‑Roller Matching Structure for Textile Finishing Simulation
Upper roller is high‑temperature‑resistant nylon gravity roller; lower roller adopts mirror‑chrome‑plated stainless‑steel heating roller. Chrome‑plated surface delivers outstanding hardness, anti‑adhesion and wear‑resistance. Different pressure‑temperature‑speed combinations generate varied gloss and smoothness results for cotton, linen, synthetic fibre and mixed textile samples.
Hydraulic High‑Pressure System with Precise Pressure Regulation
Full‑hydraulic power system supports maximum 5‑ton line pressure. Equipped with real‑time pressure‑gauge display. Built‑in time‑relay module manages pressurisation holding‑time and pressure‑release interval, avoiding long‑duration static compression which may damage the nylon upper roller. Foot‑pedal control frees operator’s hands for convenient fabric feeding operation.
Circulating Oil‑Temperature Heating System for Homogenous Thermal Output
3 kW oil‑circulation heating assembly delivers even heat distribution across the whole roller surface, maximum working temperature reaches 180 °C. Operators can set target temperature according to fibre‑type requirements. Integrated forced‑air‑cooling fan accelerates roller cooling‑down after test completion.
Frequency‑Conversion Stepless Speed‑Regulating Drive Unit
Fabric feeding speed ranges from 0‑6 m/min for flexible matching of different finishing‑process requirements. The drive system requires rollers to keep rotating before applying pressure, effectively preventing permanent roller deformation caused by static squeezing.
Integrated Cabinet‑Type Frame with Complete Safety‑Interlock Logic
All hydraulic power‑pack, electric‑control components and cooling‑fan are housed inside heavy‑duty steel cabinet. The control panel centralises all switches, indicators and parameter‑setting knobs. The machine supports non‑standard modification for roller width and auxiliary‑fixtures to satisfy custom lab‑test demands.

Complete Technical Parameter Table

Parameter Item	KR‑851 Standard Specification
Core Functions	Fabric surface flattening, gloss finishing, heat‑transfer printing simulation
Feeding Speed	0‑6 m/min, frequency‑conversion stepless adjustable
Max Hydraulic Line Pressure	5 T
Heating Mode	Circulating oil‑temperature heating, rated heating‑power 3 kW
Max Working Temperature	180 °C
Upper Roller	Nylon gravity roller, dimension: W400 mm × Φ150 mm
Lower Roller	Mirror chrome‑plated stainless‑steel heating roller, dimension: W400 mm × Φ150 mm
Total Installed Power	7 kW
Power‑Supply	AC 380V, 50 Hz
Overall Outer Dimension(L×W×H)	1430 × 400 × 1650 mm
Complete‑Machine Net Weight	1200 KG

Standard Complete Test / Simulated‑Finishing Operating Workflow

Pre‑Test Preparation

Position machine on solid level workshop floor. Verify reliable equipment grounding. Check hydraulic‑station oil‑liquid level, foot‑pedal linkage and cooling‑fan condition. Power‑on main‑unit. Confirm hydraulic‑motor rotation‑direction complies with specification. Prepare pre‑conditioned fabric test‑samples.
Parameter Configuration

Start hydraulic‑station. Set pressurisation‑holding‑duration and pressure‑release interval via electric‑box time‑relay. Configure target processing temperature, wait for roller surface to achieve full thermal equilibrium. Set fabric‑feeding line‑speed. Important operating‑rule: always start roller rotation first before applying hydraulic pressure. Static long‑time squeezing without rotation will cause permanent damage to nylon roller.
Fabric Feeding & Calendering Simulation

Feed textile sample steadily into roller nip by manual guidance via foot‑pedal operation. Adjust hydraulic pressure amplitude gradually (minimum initial pressure approx.15 kg). Observe gloss, smoothness and hand‑feel changes of output fabric. Fine‑tune temperature, pressure or speed if finishing‑effect fails to meet expectation.
Sample Evaluation & Process‑Recording

Collect processed fabric specimens. Compare surface gloss, flatness and tactile‑feeling against reference‑sample. Record full‑set process‑parameters: speed, temperature, line‑pressure for repeat‑testing and process‑documentation. Multiple replicate runs are recommended for stable‑process‑formula confirmation.
Post‑Test Shutdown & Maintenance

Release hydraulic pressure completely. Keep rollers rotating, activate cooling‑fan and cool rollers down below 60 °C. Only cut‑off main‑power after temperature drops. Clean roller surface to clear fabric fibre residues. Inspect hydraulic‑station oil‑condition. When equipment stays idle for extended periods, ensure rollers remain fully separated without contact pressure.

Emergency‑handling note: Under sudden power‑failure or accident‑situation, manually open hydraulic‑station relief‑valve to release pressure and separate upper‑lower rollers, avoid long‑term static compression damaging nylo

Wide Industrial Application Scenarios

Textile Dyeing‑Finishing Manufacturing Enterprises

Lab‑scale simulation of calendering finishing process for woven‑and‑knitted‑fabrics; screen finishing‑agent formulas and optimise temperature‑pressure‑speed process‑windows for new‑product‑development.

Synthetic‑Fibre & Blended‑Material R&D Departments

Investigate the influence of calendering‑parameters on fabric gloss, compactness and hand‑feel performance of cotton, linen, polyester and blended‑textiles.

Textile‑Printing Factories

Simulate laboratory‑scale heat‑transfer‑printing process and verify transfer‑effect for pattern‑printed textile‑samples.

University Textile‑Engineering Teaching‑Laboratories

Practical‑training apparatus for textile‑finishing‑technology courses for demonstrating calendering‑process principles.

Third‑Party Textile‑Process‑Development‑Institutes

Carry‑out customer‑sample finishing‑simulation trials and provide process‑optimisation technical‑support.

Standard Factory‑Full‑Delivery Kit

KR‑851 laboratory textile two‑roll calendering‑machine main‑unit
Matching nylon gravity upper‑roller and chrome‑plated stainless‑steel heating‑lower‑roller assemblies
Complete hydraulic‑power‑station system with pressure‑gauge and time‑relay‑control module
Circulating oil‑heating assembly plus forced‑air cooling‑fan unit
Foot‑pedal operation‑control assembly
Central electrical‑control cabinet with frequency‑conversion drive components
Power‑supply connecting‑cable
Multilingual printed‑operation‑manual including process‑setting, safety‑operation and daily‑maintenance guidelines
Factory‑issued performance‑inspection‑certificate

Optional spare‑parts & custom‑options: replacement nylon roller, custom‑working‑width roller assembly.

Global Distributor & After‑Sales‑Support

We deliver remote‑one‑on‑one technical‑guidance covering process‑parameter‑setting, hydraulic‑system‑adjustment, roller‑maintenance and common‑fault troubleshooting. Spare‑parts stock includes roller components, hydraulic‑valve parts, temperature‑sensors 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‑851 Laboratory Two‑Roll Textile Calendering Finishing Machine | Hydraulic‑Driven Lab‑Simulator For Fabric Gloss‑Flatting‑Heat‑Transfer‑Printing Process‑Research

Core‑Feature‑Labels‑For‑Product‑Images

Safety‑Operation‑Reminder

Keep hands away from roller nip zone while machine is running. Must rotate rollers before applying hydraulic pressure; static compression without rotation will destroy nylon roller. Follow cooling‑sequence procedure, do not cut‑off main‑power when rollers remain at high‑temperature. Check hydraulic‑oil‑level regularly. In emergency‑situation, release hydraulic pressure immediately to separate two rollers.

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Product Categories

KR‑851 Laboratory Two‑Roll Textile Calendering Finishing Machine

KR‑851 Laboratory Two‑Roll Textile Calendering Finishing Machine

Additional information

RT-851 Automatic Calender Laboratory Textile Roll Calendering Machine

Product Details：

Product Overview

Core Product Competitive Advantages

Complete Technical Parameter Table

Standard Complete Test / Simulated‑Finishing Operating Workflow

Wide Industrial Application Scenarios

Textile Dyeing‑Finishing Manufacturing Enterprises