Method and device for testing box blanks

US9435780B2 · kind B2 · utility

Assignee

• Texmag GmbH Vertriebsgesellschaft · CH

Inventors

• Thomas Reiter · Dachau, DE
• Lars Zwerger · Augsburg, DE

Key dates

• Filing date: Feb 18, 2014
• Grant date: Sep 6, 2016
• Expiry date: Jan 24, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B31B2120/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method for testing a box blank formed from flat material, the said box blank is guided along a blade (12). At least one of the layers (10) is folded onto the blade (12), so that it is located between the layers (10, 14). A component (16) is located opposite the blade (12), which component is located outside the box blank (2). Waves (17, 21) which are affected by the layer (10) are propagated between the blade (12) and the component (16). In order to achieve a high contrast, the blade has at least one physical property which differs from the corresponding physical property of the box blank.