Why Leak Inspection Is Critical for Modern Packaging Operations

Consumers rarely see a failed package until something has already gone wrong. A small, difficult-to-detect leak can compromise product quality, shorten shelf life, create contamination concerns, contribute to costly waste, and potentially result in recalls or dissatisfied customers. For manufacturers operating high-speed packaging lines, identifying package integrity issues before products leave the facility is an important part of maintaining consistent quality.

Modern leak inspection technology makes it possible to perform these inspections at production speeds, including systems capable of inspecting thousands of containers per minute or identifying leaks measured in fractions of a millimeter. That’s why reliable leak inspection continues to play an important role in modern packaging operations.

Why Leak Inspection Matters

Package integrity affects much more than appearance. Even a small defect in a seal, closure, or container can compromise the product inside and create problems throughout the supply chain.

An effective leak inspection system can help manufacturers:

• Protect product quality by identifying compromised packages before they leave the production line.
• Reduce the risk of recalls by detecting potential package failures earlier in the process.
• Support food safety and quality control by helping ensure products remain properly contained and protected.
• Verify seal and package integrity as products move through production.
• Protect shelf life by identifying leaks that could expose products to outside conditions.
• Reduce costly product waste by catching packaging problems before defective products are shipped.
• Maintain production throughput with inspection technologies designed to operate at high line speeds.

Integrating inspection directly into the production process gives manufacturers another layer of quality control without relying solely on downstream or manual inspection.

Detecting Small Leaks at Production-Line Speeds

One of the biggest considerations when selecting a leak inspection system is balancing inspection sensitivity with production speed. Through its partnership with Teledyne TapTone, SEPKG can provide access to several inspection technologies designed for different package types, line speeds, and inspection requirements.

For flexible, non-pressurized plastic containers, TapTone’s Compression technology can detect leaking and damaged containers while supporting inspection speeds of up to 2,000 containers per minute. The system is designed to identify leaks greater than 0.508 mm / 0.020 in.

For applications requiring greater sensitivity, TapTone’s Dual Sensor Compression technology is designed to inspect flexible containers for micro leaks greater than 0.152 mm / 0.006 in while operating at production-line speeds up to 300 ft/min. The system takes comparative measurements at both the infeed and discharge to identify containers that fall outside acceptable parameters.

Those capabilities allow manufacturers to incorporate package integrity inspection into high-speed production environments without making inspection a separate offline process.

Inspection Technologies for Different Package Types

There is no single leak inspection method that works for every package. Container material, closure type, internal pressure, product characteristics, and line speed can all influence which technology is appropriate.

Compression and Dual Sensor Compression

For flexible plastic containers, TapTone Compression systems apply controlled force to the container sidewalls and measure the resulting response. Containers that fall outside established parameters can then be rejected from the production line.

Dual Sensor Compression adds comparative measurements at both the infeed and discharge, providing increased sensitivity for micro-leak applications.

Force Inspection for Pressurized Containers

For pressurized metal and plastic containers, TapTone Force technology measures sidewall tension to identify leaks or improper internal pressure.

The Force system supports applications with internal pressures up to 45 psi, while the Force Stainless system is designed for higher-pressure applications up to 160 psi. Both are rated for production speeds up to 300 ft/min.

These systems can be used with applications such as LN2-dosed or carbonated containers, with the Force Stainless system also designed for aerosol can applications.

Acoustic and Proximity Inspection

TapTone also offers technologies for inspecting pressure and vacuum in containers with metal closures.

Acoustic inspection evaluates the natural resonant frequency of a closure to determine whether the container falls within established pressure or vacuum parameters. Depending on the application, these systems can operate at speeds up to 1,500 containers per minute.

Proximity technology measures metal lid deflection and can support inspection speeds up to 2,000 containers per minute.

Case Inspection

Inspection can even take place after containers have been packed.

TapTone’s T4000 Case system provides 100% non-contact, non-destructive inspection through sealed cardboard and/or shrink-wrapped cases. Depending on the application, the system can identify pressure or vacuum issues as well as defects such as missing containers, missing lids, broken bottles, and damaged cans.

Case inspection can operate at speeds up to 250 cases per minute.

What Types of Packages Can Benefit From Leak Inspection?

TapTone inspection technologies can support a wide range of packaging formats, including:

• Flexible plastic containers
• Plastic bottles and containers
• Glass containers
• Metal cans
• Pressurized metal and plastic containers
• Foil and film-sealed containers
• Carbonated and LN2-dosed containers
• Sealed cases containing cans or glass jars

The appropriate technology depends on what needs to be detected and how the package behaves during inspection.

Why SEPKG Partners with Teledyne TapTone

Teledyne TapTone has decades of experience developing container inspection technology for food, beverage, chemical, health and beauty, pharmaceutical, nutraceutical, and other packaged-goods applications.

Its inspection portfolio includes leak, vacuum and pressure, fill-level, and vision inspection technologies for individual containers and cases. TapTone systems are also designed to accommodate rapid product changeovers, an important consideration for manufacturers running multiple products or package formats on the same line.

For SEPKG customers, that range of technology provides flexibility. Rather than trying to apply the same inspection method to every application, SEPKG can evaluate the package, product, required sensitivity, production speed, and existing line configuration before recommending an appropriate solution.

Choosing the Right Leak Inspection Solution

There isn’t a single inspection system that’s right for every production line.

A manufacturer running flexible containers at high speeds may have very different requirements from a facility inspecting pressurized cans, glass containers with metal closures, or finished cases.

Important considerations include:

• Package and container material
• Required leak detection sensitivity
• Production speed
• Internal pressure or vacuum
• Closure and seal design
• Product characteristics
• Available line space
• Washdown and sanitation requirements
• Reject requirements
• Existing conveyor and production equipment

SEPKG works with manufacturers to evaluate these factors before recommending an inspection solution.

The goal isn’t simply to add another piece of equipment to the line. It’s to identify the appropriate inspection technology for the application while maintaining throughput and strengthening overall quality control.

Improve Package Integrity Without Sacrificing Throughput

A packaging failure discovered after a product has left the facility can be significantly more costly than identifying it during production.

With inspection technologies capable of detecting leaks as small as 0.152 mm / 0.006 in in applicable flexible-container applications, along with systems capable of operating at speeds reaching 2,000 containers per minute, manufacturers have options for adding meaningful package integrity controls without unnecessarily slowing production.

If you’re evaluating leak inspection technology, upgrading an existing inspection system, or looking for ways to strengthen package quality control, the SEPKG team can help evaluate the right technology for your product and production line.

Contact SEPKG to discuss the right leak inspection solution for your application.