Product Overview

The KR‑406 fully‑automatic bursting‑strength tester evaluates the burst‑resisting capacity of paper, corrugated fibre‑board, leather, woven textiles and synthetic leather materials. It applies steadily‑rising hydraulic pressure to expand the elastic rubber diaphragm, inflating the clamped specimen until rupture occurs. The instrument captures peak pressure at the moment of breakage to output bursting‑strength values, which reflect material’s ability to withstand internal stress during handling, printing and transportation.

Controlled by microprocessor circuitry, the unit completes pneumatic clamping, hydraulic pressurisation, data capture, hydraulic reset and result‑statistics automatically after specimen placement. It conforms to ISO 2759, GB/T 6545, JIS‑P8112, JIS‑L1018, ASTM‑D2210 and TAPPI‑T403 specifications. Widely deployed in paper‑making plants, carton‑manufacturing workshops, footwear factories, packaging‑R&D centres and accredited third‑party QC labs for incoming‑material acceptance and finished‑goods quality auditing.

Core Product Competitive Advantages

1. Full‑Automatic Test Cycle, Minimal Manual Intervention Once the specimen is secured, the machine executes the complete workflow: pneumatic clamping, constant‑rate hydraulic pressurisation, auto‑stop upon sample rupture, hydraulic‑system automatic roll‑back. No frequent manual adjustment is required, greatly improving throughput for high‑volume daily quality‑control sampling.
2. High‑Precision Pressure‑Sensing & Multi‑Unit Switchable Display High‑accuracy pressure sensor delivers 0.01 kg/cm² readout resolution. The LCD panel supports quick unit switching among kg/cm², kPa and custom‑defined units. Peak bursting value, group maximum‑minimum and average statistics are presented directly on‑screen for batch‑comparison analysis.
3. Adjustable Pneumatic Specimen‑Clamping Mechanism Configurable clamping‑pressure up to 5 kg/cm² ensures uniform, firm grip on diverse‑thickness specimens, preventing sample slippage or edge‑leakage during hydraulic inflation, which avoids distorted burst‑strength test readings. External compressed‑air source (≥6 kg/cm²) is required for clamping function.
4. On‑Board Thermal Printer For Instant On‑Site Report Output Integrated miniature thermal printer prints timestamped inspection slips containing individual test readings, mean value and coefficient‑of‑variation. Operators obtain hard‑copy records without connecting external peripheral devices, convenient for lab filing and product‑certification documentation.
5. Stable Hydraulic‑System & Standard‑Defined Pressurisation Rate Hydraulic pumping rate is held at 170 ± 20 cc/min, matching international‑standard test‑requirements. Standard working liquid formula (85 % glycerin mixed with 15 % distilled water) guarantees consistent diaphragm‑expansion behaviour and long‑term measuring repeatability.

Complete Technical Parameter Table

Compliance Standards: ISO 2759, GB/T 6545, JIS‑P8112, JIS‑L1018, ASTM‑D2210, TAPPI‑T403

Standard Complete Test Operating Workflow

1. Pre‑Test Preparation Position tester on rigid horizontal lab floor. Connect AC power and external compressed‑air supply. Check hydraulic‑liquid volume and rubber diaphragm condition. Cut specimens into standard dimensions and condition samples under specified temperature‑humidity environment. Power‑on and complete system self‑check.
2. Specimen Installation Place flat, wrinkle‑free test‑piece centrally between upper‑and‑lower clamping rings. Trigger pneumatic‑clamping function to lock sample securely.
3. Launch Automatic Bursting‑Strength Measurement Initiate test sequence. Hydraulic system raises pressure at standard speed, bulging rubber‑diaphragm together with specimen. Instrument automatically halts pressurisation the instant sample ruptures, capturing peak burst‑pressure value. Hydraulic system resets automatically afterwards.
4. Data Review & Report Output Read bursting‑strength result from LCD display. Perform repeated tests on parallel‑specimens to acquire batch statistical‑values. Print inspection report via built‑in thermal‑printer as required for lab‑archiving.
5. Post‑Test Tidying Release pneumatic clamp, remove ruptured specimen. Inspect diaphragm for damage. Clear debris from clamping‑ring surfaces. Shut‑off air‑supply and main power after finishing test batches. Replace hydraulic‑liquid and rubber‑diaphragm periodically.

Technical Parameters:

Wide Industrial Application Scenarios

Pulp‑Paper & Corrugated‑Carton Manufacturing Plants

Burst‑strength QC for liner‑board, corrugated‑medium and finished carton‑boards; assess anti‑burst‑performance for shipping‑packaging materials.

Leather & Footwear Production Enterprises

Burst‑resistance evaluation for natural leather, synthetic‑leather and fabric raw‑materials for bag‑making and shoe‑manufacturing workflows.

General‑Goods Packaging Factories

Raw‑material incoming‑inspection for food, home‑appliance and commodity‑shipping cartons, verify package safety for logistics‑transit scenarios.

University Material‑Science Laboratories

Teaching‑experiment hardware for packaging‑and‑textile‑majors for researching burst‑failure characteristics of sheet‑form materials.

Third‑Party Accredited‑Testing‑Organizations

Carry‑out multi‑standard‑compliant bursting‑strength assessment and issue formal inspection‑documents for product‑certification audits.

Standard Factory‑Full‑Delivery Kit

1. KR‑406 automatic bursting‑strength‑tester main‑unit
2. Standard rubber diaphragm assembly
3. Built‑in thermal‑printer plus initial roll of printer‑paper
4. Power‑supply connecting‑cable
5. Multilingual printed‑operation‑manual complying with ISO 2759, GB/T 6545, JIS‑P8112, ASTM‑D2210, TAPPI‑T403
6. Factory‑issued performance‑inspection‑certificate

Notes: External air‑compressor is not included within standard delivery scope. Hydraulic working‑liquid (glycerin‑water mixture) needs to be prepared on‑site by user.

Global Distributor & After‑Sales‑Support

We provide remote‑one‑on‑one operational guidance covering air‑source configuration, hydraulic‑liquid preparation, diaphragm‑replacement and parameter setup. Spare‑parts stock includes rubber‑diaphragms, printer consumables and pressure‑sensor assemblies. 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‑406 Automatic Bursting‑Strength Tester | Multi‑Standard‑Compliant Instrument For Paper‑Board‑Leather‑Fabric Rupture‑Resistance‑Measurement

Core‑Feature‑Labels‑For‑Product‑Images

Fully‑Automatic Burst‑Test‑Workflow | 0‑50 kg/cm² Measuring‑Range | 0.01 kg/cm² High‑Resolution | Adjustable Pneumatic Specimen‑Clamp | Multi‑Unit Switchable LCD Display | On‑Board Thermal‑Print‑Output | Standard‑Rate Hydraulic Pressurisation | ISO‑GB‑ASTM‑TAPPI‑Compliant

Safety‑Operation‑Reminder

Ensure stable and sufficient external air‑source pressure before running tests. Do not open hydraulic‑system housing without professional‑guidance. Keep hands away from clamping‑ring zone during pneumatic‑clamping action. Periodically inspect rubber‑diaphragm and replace once aged or cracked.