Method and device for functionalizing the surfaces of adhesive closure parts
AssigneeGottlieb Binder GmbH & Co. KG
InventorKonstantinos Poulakis
Life of this patent
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Abstract
The invention relates to a method for functionalizing the surfaces of adhesive closing parts which form, with correspondingly formed adhesive closing parts, an adhesive closure that can be repeatedly opened and closed. The surface energy of the adhesive closing part is modified by means of a proton and/or electron exchanging medium, especially in the form of donors or collectors, using high energy in such a way that the physicochemical properties of the material of the adhesive closing part can be adjusted without a coating and with ageing resistance, by the attachment of functional groups of the exchanging medium to the adhesive closing part material. The invention also relates to a device for carrying out one such method.
Claims30
A method of functionalizing the surface of an adhesive closure member having a plurality of fastener elements adapted for mating with a corresponding adhesive closure member, said method comprising the step of:
- subjecting the surface of the adhesive closure member including the plurality of fastener elements with a proton and/or electron exchange medium in the form of donors and collectors to modify a surface energy and to introduce a functional group to the surface of the adhesive closure member to resist aging of the adhesive closure member and where said fastener elements are free of coatings after introduction of the functional group.
A method of producing a closure member having fastener elements with a functionalized surface comprising the steps of:
- providing a mold screen having a first side and a second side, and a plurality of openings extending between said first side and second side for forming fastener elements;
- introducing a plastic material to said first side and into said openings to form the closure member having a plurality of fastener elements;
- and
- subjecting the second surface of the screen with a proton and/or electron donor exchange medium in the form of donors and collectors to introduce a functional group to a surface of the fastener elements to resist aging without the use of coatings.
An apparatus for producing a closure member, comprising:
- a mold screen having a first side and a second side, and a plurality of openings extending between said first side and second side;
- a dispenser for introducing a plastic material to said first side and into said openings for forming the closure member with a plurality of fastener elements;
- and
- a discharge unit subjecting said second side of the mold screen and the plastic material in said openings to an electron donor exchange medium in the form of donors and collectors to modify a surface energy and to introduce a functional group to said plastic material to resist aging without the use of coatings.
Dependencies are inferred from the claim text.