The AT2E Stress Crack Tester is designed to test the internal stress in bottle base and for determining the stress crack resistance of blow-molded PET carbonated soft drink bottles by measuring the propensity for base cracking upon exposure to an aqueous sodium hydroxide solution under a controlled environment, so that to estimate the long term behavior of bottles.

Attributes:

  • Muilt-position design, more convenient and efficient (Please consult AT2E for other position reqeust)
  • PLC control ensures the high accuracy and reliability
  • High quality stainless steel frame, more safe and duable
  • Flexible position selection, each position can be controlled separately by system. Users can enable the positionsaccording to their test reqeust
  • Automatic affusion system
  • Auto pressure compensation during test process
  • Suitable for testing various bottle size
  • Corrosion-resistant design
  • Anti-explosion and clear observation window, safe and easy to observe the sample status during tests
  • Various safety design

Description

Technical data:

  • Testing pressure: selectable from 0 – 6 Bar (Please consult AT2E for higher pressure request)
  • Display resolution: 0.01 Bar
  • Pressure units: Bar / psi
  • Testing time: selectable from 0 – 200 minutes (Please consult AT2E for longer testing time request)
  • Sample range: 60 – 120 mm in diameter / 150 – 350 mm in height (Please consult AT2E for bigger sample)
  • 7” LCD touch screen
  • Recommended solution: Sodium Hydroxide (NaOH) Solution 0.200%
  • Recommended operating temperature: 2 – 50 °C
  • Communication port: RS232
  • Air supply: 0-8 Bar (Air supply ≥Max. testing pressure)
  • Water supply: tap water (≥ 1.5 bar)
  • Main supply: 220 V
  • Overall size: 190×66×123 cm
  • Net weight: 260 kg

Option

  • Mini printer

Testing procedure

  • Install and clamp the sample bottle on each position then close the door
  • Affusion head will seal and fill the bottle automatically with target volume of water then pressurize the bottle to predefined pressure and stay for a target time (like 5 minutes). At same time of water filling and pressurizing, system will fill the solution into each posistion
  • After target staying time is up, all the testing positions descend until the predefined distance and bottle base will be coverred by the solution completely
  • Record the time and pressure for each bottle to failure until predefined time
  • Test stops after the predefined time

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