Blister Leak Tester down to 7 micron, non-destructive solution

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VisionScan Max is an automated, non-destructive and tool-less leak detection machine for blister packs

The automatic blister leak tester has been developed to test the integrity of blister packs and is capable of detecting channel leaks, weak seals and defects in individual cavities down to 7μm*

The Sepha VisionScan Max is a smart alternative to the traditional blue dye leak test as the non-destructive method enables product to be returned to the production line. The machine is installed with an automated feed magazine for minimal operator involvement and offers pharmaceutical blister pack manufacturers the ability to automatically leak test full production batches with minimal operator input at speeds of up to 8 packs per minute (recipe dependent).

The Sepha VisionScan Max enables pharmaceutical manufacturers to meet the stringent quality control requirements of the industry while reducing waste and costs. The blister leak tester generates accurate, reliable pass/fail results and its tool-less design improves efficiency where multiple product changeovers are required.

* Pack & material dependent

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Features
- Non-destructive, automated, tool-less seal and leak detection device for blister packs
- Utilises imaging technology to detect channel leaks, weak seals and defects in individual blister pockets down to 7μm (pack and material dependent)
- Stand-alone system with wheels for easy mobility
- Automatic feed system
- Automatic sorting of good and defective packs into segregated magazines
- High throughput of up to 8 packs per minute (recipe dependent)
- Ability to perform 100% batch testing
- User friendly touch screen interface
- Tool-less set-up. No format change parts required. Ideal solution for production lines running multiple products
- Operating system can store up to 30,000 product types
- Can be part of a 21 CFR Part 11 compliant system
- Active Directory included and OPC Connectivity is available on request
Technical Spec
- Pack Type
  Non-porous blister pack
- Pack Size
  Min. 30mm (L) x 65mm (W) x 3mm (H) / Max. 105mm (L) x 140mm (W) x 13mm (H)
- Blister Layout
  All
- Pocket Size
  Min. pocket area: 40mm2 / Max. pocket area: 600mm2
- Test Cycle
  From 8 packs per minute (recipe dependent)
- Operation
  Automatic
- Construction
  Stainless Steel (Grade 304) and Anodised Aluminium
- User Interface
  15″ XGA LCD display, 1024 x 768 pixels with resistive touch screen
- Utilities
  Electrical: 110/230 V Single Phase / Air: 6 Bar
- Configuration
  3 x USB ports 1 x Ethernet port
- Magazine Capacity
  480mm capacity
- Tooling Changeover
  None required
- Audit Compliance
  Can be run in compliance with 21 CFR Part 11
- Machine Dimensions
  851mm (L) x 884mm (W) x 1645mm (H)
- Machine Weight
  290kg
- Shipping Weight
  390kg
- Warranty
  Supplied with a 12-month warranty. (Extended warranties are available for additional support).
Vacuum Deflection

How does Vacuum Deflection testing work?

To conduct a vacuum deflection test, a blister pack is placed inside a vacuum test chamber. The surface of the blister pack is scanned by a laser or vision system, to provide data points for subsequent deflection measurement. A vacuum is applied, and the pack surface is scanned a second time. The vacuum level is then reduced, and the pack is scanned once more.

Deflection refers to the difference in the height of the foil of a cavity under vacuum compared to the first data point when the cavity was not under pressure. A cavity with a large hole will show no difference in the foil, as the hole allows the pressure inside the pocket to equalise to the applied vacuum inhibiting foil movement. If there is no hole present in the cavity, the lidding foil will move, and the second scan will show a large deflection as the cavity expands as a result of the applied vacuum.

Cavities with small holes will initially expand because of the applied vacuum. The third scan is required to identify small holes. The variation in the average height at full vacuum and reduced vacuum is referred to as collapse. If the collapse is greater than normal, a small hole is present. This occurs as the air slowly escapes through a small defect, allowing the pressure inside the pocket to equalise with the applied vacuum.
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