Measurement Testing System for Plastic Containers

Agr International’s Gawis 4D™ measurement testing system is designed to automate a number of critical bottle and preform measurements into a single operation.

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Image 3 Gawis User Interface

This new laboratory test system provides a new level of measurement capabilities to support the design, process and quality management of plastic containers and preforms.

Agr International’s Gawis 4D is two systems in one; a thickness measurement system, and a dimensional gauging device. This system incorporates the latest optical gauging and thickness measurement technology, in combination with automation, to simplify container measurement operations while maximizing testing throughput. It is designed to provide broad measurement capabilities on a wide range of plastic containers and preforms with unmatched accuracy, repeatability and operational throughput.

Built upon a completely new measurement platform, this system incorporates a number of advanced features and capabilities that are designed to simplify testing and maximize throughput including:

• Large, customizable and intuitive user interface with swipe and zoom capabilities

• Powerful yet simple job creation and editing tools incorporating AutoJob™ - automated job setup

• Precise finish gauging and body measurement capabilities utilizing high resolution, USB 3 camera technology, optimized lensing and telecentric optics with 360º imaging

• Comprehensive, non-destructive thickness measurement compatible with PET and a wide range of polymers

• Performance to ISBT, ASTM and equivalent international standards

• Industry 4.0 communication protocols


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The vision measurement technology incorporated in the Gawis 4D utilizes high pixel density camera components in combination with enhanced telecentric optics and lighting. This combination provides a very crisp edge shadow, making it possible to achieve the highest dimensional precision and repeatability as well as a very low percent of process variation for individual measurements.

Also, Agr developed AutoJob™, a patent pending feature on the Gawis 4D that is designed to simplify job setup by providing automated recognition of key finish measurements on a bottle or preform sample. With this feature, the operator simply selects the AutoJob mode and the work of locating and identifying finish features is performed automatically. The Gawis 4D scans the sample, identifies the standard finish measurements for that sample and incorporates them into the job within a matter of seconds. The operator can adjust the selection, add control limits to the selection and incorporate additional measurements as necessary. This feature greatly accelerates job creation, saving hundreds of labor hours through the course of a year.

Thickness measurement in the Gawis 4D utilizes two approaches. For translucent materials, the Gawis 4D incorporates an all-new, patent pending Integrative Thickness Measurement™ method. This method takes advantage of the full IR bandwidth and expands the capabilities of the system  to provide measurements on translucent plastic materials that were previously not possible with non-contact measurement. With this capability, most HDPE, PP, PE and heavily colored PET containers that have IR light transmission as low as 5% can now be measured.

Industry 4.0 standard communication protocols have also been incorporated into the Gawis 4D to improve communications and support Industry 4.0 objectives.

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