Constantia Teich Gmbh

Research Center for Non Destructive Testing Gmbh

Alfred Wegenberger

Martin Kornfeld

Adolf Schedl

Lambert Nekula

Franz Reiterer

Robert Afflenzer

Bernhard Reitinger

Matthias Steiner

Juergen Roither

Clemens Gruensteidl

Saeid Zamiri

Clemens GRÜNSTEIDL

Jürgen Roither

Frank Eger

Marie Macherhammer Geb Braunbruck

Christoph Klauser

Igor Cerri

Composite materials, and sealing foils prepared with such composite materials for sealing a container, where the composite materials include an inner layer configured to face the container during sealing, the inner layer being single- or multi-layer, and including a self-contained and closed weakening line; an outer layer that may be single- or multi-layer, and that is configured to be peeled from the inner layer; where an area of the inner layer delimited by the closed weakening line remains attached to the outer layer when the outer layer is peeled from the inner layer, thereby creating a hole in the inner layer; the outermost of the inner layers is in contact with the outer layer, and includes a semicrystalline ethylene-propylene copolymer that is substantially free of dienes; and the innermost of the outer layers is a barrier layer or a lacquer.

Composite material for the production of sealing foils and sealing foils made therefrom

For a simple, fast, safe and reliable determination of the layer thickness of a bonding layer between two layers of a packaging, a laser ultrasonic method is provided, in which the transit time of the ultrasonic wave through the first and second packaging layers () is determined in advance, and a maximum (M, M, M) in the measurement signal (S) is sought, and the point in time of occurrence of this maximum (M, M, M) is determined as the total transit time (T, T, T) of the ultrasonic wave, and the transit time of the ultrasonic wave through the first and second packaging layers () is subtracted from the total transit time (T, T, T), and the thickness (d) of the bonding layer is deduced from the known ultrasonic speed (v) in the bonding layer ().

Method for determining the layer thickness of a connecting layer between two packaging layers

A lid () for closing a cup () along a peripheral sealing edge () and a method for producing such a lid. The lid includes at least one aluminum film and an optionally multi-layered plastic layer which is co-extruded onto the aluminum film and has a closed predetermined tearing line (). The plastic layer is made of plastic based on polyethylene (PE) or plastic based on polypropylene (PP), and the predetermined tearing line is introduced into the plastic layer preferably by means of a COlaser. The predetermined tearing line () may be provided directly in the region of the sealing edge ().

Lid for closing a cup

Packaging for foodstuffs

Growing community of inventors

Langenlois, Austria

Alfred Wegenberger