Tamper proof and safety seal inspection
Detect safety seal defects and limit product recalls
Tamper-evident, or tamper proof, packaging has become a common safety measure used in many food and beverage products to prevent contamination and spillage and maintain the integrity of finished goods. Tamper-evident seals, rings, and sachets guarantee the quality and freshness of a product to customers, as well as provide a level of security to manufacturers. Intact tamper technology conveys the safety and trustworthiness of a finished product, but production errors can occur in the final sealing stages of primary packaging, affecting safety seals. Normal wear and tear of production machines make it nearly impossible to manufacture 100% defect-free products, so a quality control and detection process becomes essential to keep those products from leaving the line and reaching the market.
After a product has been checked for correct fill level and cap placement, vision systems inspect closures to verify seal integrity and specifically to verify tamper proof band and safety seal presence. Machine vision systems detect defects and verify package integrity through accurate and repeatable inspection. 3D laser displacement sensors ensure that the safety seal covers the entire opening, is free of bubbles or wrinkles around the rim, and does not exhibit any holes or punctures. Machine vision technology detects safety seal edges and measures the height, width, relative position, and gap size (if present), comparing them to the programmed limits. Tamper seal dimensions which do not comply with programmed limits are rejected, limiting risk of product recalls.