KR‑439B Automatic Paper & Board Air Permeability Tester

Category 5. Paper and Carton Box Testing Machine

Additional information

Air Permeability Test Machine for Paper Fabric Film

1. Adopt an important USA chip and load sensor to make the test accurate.
2. The whole test is fully automatic, fast and accurate.
3. The instrument is controlled by a microcomputer, with a high-resolution color touch screen menu interface that is convenient for customers to operate or view test data.
4. Micro-printer, fast and clear printing.

Product Details：

Product Overview

The KR‑439B air permeance analyser applies positive‑pressure outflow measuring principle to quantify air flow passing through flat sheet‑type specimens. It delivers reliable air‑permeance and air‑resistance readings for materials ranging from highly‑porous non‑woven textiles down to low‑permeability barrier papers.

Built to satisfy multiple global testing protocols including ISO 2965, ISO 5636‑3/4/5, GB/T 458, TAPPI T460 and DIN 53120, this bench‑top analyser supports Gurley, Bendtsen and Sheffield measuring modes. Featuring imported high‑precision sensing hardware and intelligent algorithm processing, it is widely deployed in paper mills, tobacco‑material production sites, battery‑separator manufacturers, composite‑material factories and accredited third‑party test laboratories for raw‑material validation and finished‑goods quality audits.

Core Product Competitive Advantages

High‑Performance Sensing & Fast‑Prediction Algorithm Adopts premium imported flow‑sensor components with measuring error controlled within ±1 %. The embedded short‑cycle prediction algorithm completes valid assessment in merely several seconds, making it well‑suited for frequent on‑production‑line spot‑check sampling without sacrificing data credibility.
Multilingual 7‑Inch Touch‑Screen Operating Interface Intuitive graphical touch‑panel supports Chinese‑English language toggle. Operators can swiftly switch among different test standards, adjust differential‑pressure parameters and view real‑time flow data. New lab technicians can master routine operations within five minutes, drastically cutting staff‑training workload.
Intelligent Self‑Diagnosis & Self‑Calibration Capability Built‑in automatic self‑check routine detects system leakage and sensor drift before each test run. This function greatly reduces human‑caused measuring mistakes and maintains stable long‑term performance. Users can toggle freely between manual‑triggered and sensor‑triggered automatic‑test workflows.
Wide Adjustable Differential‑Pressure Range Differential‑pressure is configurable from 0.1 kPa up to 50 kPa. It can handle ultra‑thin cigarette paper as well as dense high‑barrier industrial sheets, covering diverse permeability grades across multiple industry sectors.
Rich Data‑Output & Durable Mechanical Layout On‑board thermal printer generates hard‑copy inspection slips recording individual‑sample values plus batch statistics including maximum, minimum and standard‑deviation. The compact metal‑cabinet construction extends equipment service‑life up to around 10 years while lowering routine maintenance expenses.

Complete Technical Parameter Table

Parameter Item	KR‑439B Standard Specification
Nominal Test Pressure	20.0 kPa
Measuring Range	0.003‑100 μm/Pa·s2‑40000 s (Gurley)0.3‑8800 ml/min (Bendtsen)0.2‑1400 SU (Sheffield)
Readout Resolution	0.001 μm/Pa·s
Display Unit	7‑inch colour multi‑language touch‑screen
Max Throat Depth	110 mm
Single‑Test Duration	2‑10 seconds adjustable
Specimen Clamping Pressure	1 MPa
Standard Test Area	50 cm²
Selectable Measuring Units	μm/Pa·s, Gurley(s), Bendtsen(ml/min), Sheffield(SU)
Calculated Test Outputs	Air permeability, max / min / average, standard deviation
Operating Modes	Automatic induction test / manual‑start test selectable
Input Power Supply	AC220V ±10 V, 50 Hz
Complete‑Machine Net Weight	Approx. 25 KG

Standard Complete Test Operating Workflow

Pre‑Test Inspection Place unit on level lab bench. Switch on power and run built‑in self‑diagnosis procedure. Confirm air‑circuit tightness, select corresponding test‑standard and configure differential‑pressure parameters via touch‑screen.
Specimen Placement Prepare sheet‑specimen following standard conditioning requirements. Lay sample flat onto the test platform, ensure the measuring area is free of creases, holes and contamination.
Initiate Measuring Cycle Either trigger manually by pressing start button or enable sensor‑induction auto‑start. Test head descends and clamps sample at defined pressure. Instrument collects airflow signals throughout measuring period.
Data Review & Report Output When measurement finishes, test‑head lifts automatically. View calculated permeability‑related indexes on‑screen. Print test report locally or export datasets for external computer filing.
Post‑Test Tidying Remove measured sample. Clear dust or fibre residues from test‑head sealing surface. Shut‑down instrument after completing all batch‑sample runs. Carry‑out periodic calibration as stated within operation manual.

Wide Industrial Application Scenarios

Pulp‑Paper & Tobacco‑Material Factories

Permeability inspection for industrial paper, packaging base‑paper and cigarette‑paper; quality‑control for filter‑plug‑wrap and joining‑paper materials for tobacco‑product production.

New‑Energy‑Material Enterprises

Air‑flow‑performance evaluation for lithium‑ion‑battery separator films and various polymer barrier sheets.

Textile & Non‑Woven Producers

Air‑permeance testing for woven fabrics, non‑woven webs, glass‑fibre and mineral‑fibre sheet‑materials.

Insulation & Construction‑Material Manufacturers

Performance verification for electrical‑insulation sheets, refractory fibre‑products and building‑grade breathable materials.

Third‑Party Accredited‑Testing‑Organizations

Carry‑out standard‑compliant air‑permeability assessment and issue formal inspection‑documents for product‑certification and factory‑acceptance audits.

Standard Factory‑Full‑Delivery Kit

KR‑439B air‑permeability‑tester main‑unit
Integrated thermal‑printer assembly
Power‑supply adaptor and connecting‑cables
Multilingual printed‑operation‑manual complying with ISO 2965 / GB/T 458 / TAPPI T460
Factory‑issued performance‑inspection‑certificate

Global Distributor & After‑Sales‑Support

We deliver remote‑one‑on‑one guidance covering standard‑parameter selection, specimen‑placement, self‑calibration workflow and daily maintenance. Spare‑parts stock includes flow‑sensor modules, printer consumables and sealing‑ring accessories. Bulk‑purchase clients may request custom‑range configuration. 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‑439B Automatic Air‑Permeability Tester | Multi‑Mode Gurley‑Bendtsen‑Sheffield Analyser For Paper‑Board‑Film‑Non‑Woven Permeance Testing

Core‑Feature‑Labels‑For‑Product‑Images

Safety‑Operation‑Reminder

Check air‑circuit sealing condition before formal testing. Keep test‑head sealing ring clean of paper‑dust and fibre debris to prevent measuring deviation. Do not place hands beneath descending test‑head during automatic‑testing cycles.

Build Your Market with DGKAREY

KAREY products are trusted by customers across more than 100 countries, supporting long-term business growth in the testing equipment industry.
We are now seeking reliable partners to represent our brand in their local markets.

As an authorized distributor, you will receive dedicated regional support, ensuring a stable and protected business environment.
Your orders will be handled with priority, and our team will assist you with tailored equipment solutions based on your market needs.

From initial cooperation to ongoing development, we work closely with you to strengthen your presence and competitiveness.

KR‑439B Automatic Paper & Board Air Permeability Tester

KR‑439B Automatic Paper & Board Air Permeability Tester

Additional information

Air Permeability Test Machine for Paper Fabric Film

Product Details：

Product Overview

Core Product Competitive Advantages

Complete Technical Parameter Table

Standard Complete Test Operating Workflow