The Laboratory Concora Medium Fluter (also known as corrugated base paper corrugator) is the basic testing equipment for corrugated base paper in the laboratory after corrugating (called corrugated paper) to perform corrugated flat pressure (CMT) and corrugated paper compression strength (CCT) tests. It needs to be used with ring pressure sampler and ring pressure strength tester.

The KR‑431 laboratory‑grade Concora medium fluter is specialised sample‑preparation equipment for corrugating medium paper. Under controlled temperature and pressure conditions, it forms standard A‑type corrugated test strips from flat medium paper. These pre‑fluted specimens are essential precursors to run CMT (Concora Medium Flat Crush Test) and CCT (Corrugated Crush Test) when paired with ring‑pressure sample cutters and compression strength testers.
This instrument strictly complies with GB/T 1061 and ISO 7263 international testing standards. It simulates industrial corrugator thermal‑forming conditions inside laboratory environment, delivering repeatable, standardised fluted samples. It is widely deployed in corrugated‑board mills, paper‑making enterprises, packaging R&D centres and accredited third‑party packaging‑material‑testing laboratories.


| Parameter Item | KR‑431 Standard Specification |
|---|---|
| Upper Tooth Radius | 1.50 ± 0.1 mm |
| Lower Tooth Radius | 2.00 ± 0.1 mm |
| Tooth Depth | 4.75 ± 0.05 mm |
| Gear Tooth Profile | Type‑A flute |
| Working Rotation Speed | 4.5 r/min |
| Temperature Display Resolution | 1 ℃ |
| Working‑Temperature Adjustable Range | Ambient ~ 200 ℃ |
| Standard Operating Temperature | 175 ± 8 ℃ |
| Adjustable Contact‑Pressure Range | 49 ~ 108 N |
| Overall Dimension (L×W×H) | 530 × 400 × 475 mm |
| Input Power Supply | AC220V 50Hz |
| Complete‑Machine Net Weight | 54.2 KG |


Produce standard fluted test‑strips for incoming‑QC of corrugating‑medium base‑paper; evaluate raw‑material flat‑crush and edge‑crush performance for carton‑production quality‑control.
Performance‑comparison testing for new‑formula corrugating‑medium paper; assist pulp‑formula adjustment and product‑grade classification.
Lab sample‑preparation for developing lightweight corrugated‑board materials, support new‑packaging‑structure research projects.
Teaching‑experiment equipment for paper‑packaging‑majors for corrugated‑material mechanical‑property‑research.
Produce ISO 7263 / GB/T 1061‑compliant fluted specimens, support official CMT / CCT performance‑assessment and issue formal inspection‑documents.
Matching Recommended Auxiliary Equipment: ring‑pressure sample cutter, paper‑board compression strength tester (for subsequent CMT / CCT testing).
We provide remote‑one‑on‑one operational guidance covering temperature‑parameter setting, pressure‑adjustment and specimen‑making workflow. Spare‑parts stock includes heating‑elements, forming‑gear components and control‑module assemblies. Bulk‑order customers can request custom‑voltage variants for overseas‑markets. Regional‑exclusive‑agent privileges contain priority‑production‑scheduling, OEM private‑branding‑services and complete‑set high‑definition product‑marketing‑image‑resources.
KR‑431 Concora Medium Fluter | Lab Sample‑Prep Machine For CMT‑CCT Corrugating‑Medium Flat‑Crush‑Edge‑Crush Test, Complies ISO7263‑GB/T1061
PID Intelligent Temp‑Control | Over‑Temp Safety‑Protection | A‑Type Precision Corrugating‑Gear | Adjustable Contact‑Pressure | 4.5r/min Stable Forming‑Speed | Power‑Off Parameter‑Memory | Bench‑Top Cabinet‑Layout | ISO‑GB‑Standard‑Compliant
The forming‑gear station reaches high working‑temperature during operation; avoid direct skin‑contact to prevent scald injury. Keep hands away from paper‑feeding slot when machine is running. Clean fibre dust from gear assembly after finishing sample batches.
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