Tantec Gmbh

Trans Tech America, Inc.

Mark Blitshteyn

Richard Wright

Reinhard Gaenzle

Joergen Hansen

Robert K Shaw

An apparatus for simultaneous electrical discharge treatment and adhesive application to a polymer component. The apparatus includes a jig having an electrically conductive region and a dispenser having an electrically grounded dispensing tip with a dispenser orifice which functions as an electrode as it is moved across an upper surface of the polymer component in close proximity thereto. During such movement, the tip coacts with the jig which underlies the component and to which high voltage is applied to create an electrical discharge which is directed onto the component and makes the surface thereof susceptible to bonding with adhesive applied to the component from the tip virtually simultaneously with the discharge.

Method and apparatus for simultaneous electrical discharge treatment of

An apparatus for treating the surfaces of formed plastic articles including a plurality of bare metal discharge electrodes connected to a high frequency AC power supply, a counterelectrode disposed in spaced relation to the discharge electrodes for defining a treatment zone therebetween, and an insulation layer mounted in spaced relation to the counterelectrode such that a discreet air space exists between the insulation and counterelectrode for moderating the electrical discharge between the discharge electrodes and counterelectrode and enabling greater control and uniformity in the electrical discharge between the electrodes and counterelectrodes. In the illustrated the embodiment, a first set of discharge electrodes define a first treatment zone for treating one-half of the circumferential surface of articles directed through the first treatment zone and a second set of discharge electrodes define a second treatment zone for an treating opposite peripheral half of the circumferential surface of articles passing through the second treatment zone.

Method of controlling high-frequency arc discharge and apparatus for

A method and apparatus for determining the contact angle of a droplet of test liquid on a substrate surface. The apparatus includes a test article support plate, a pipette for depositing a droplet of test liquid onto a substrate surface of the test article, and a lamp for projecting an image of the deposited droplet onto a projection screen with a base line of the image positioned on a horizontal axis line of the screen. The screen further has a protractor scale calibrated to read twice the normal angular value, and a rotatable reference line which upon positioning through a contact point of the droplet with the substrate surface and an apex point of the droplet farthest removed from the substrate surface directly indicates the value of the contact angle of the on the protractor scale.

Method and apparatus for measuring contact angles of liquid droplets on

A method and apparatus adapted for the rapid, accurate and repeatable determination of contact angles of liquid droplets applied to curved substrate surfaces. The apparatus includes a support upon which an article may be mounted with the curved substrate surface facing downwardly, a pipette having a discharge end below the downwardly facing curved surface and operable for transferring a predetermined relatively small droplet of a test liquid onto the downwardly facing curved surface, and a contact angle measuring device which includes a lamp for directing a light beam across the suspended droplet such that an image thereof is projected onto a screen from which the contact angle is measurable.

Growing community of inventors

Bloomingdale, IL, United States of America

Mark Blitshteyn