Abstract:
A process for making a metal-polymer composites sheet suitable for shaping into container end panels having improved adhesion and water resistance. A polymer precurser coating is applied to a metal sheet. The polymer precurser coating is selected from the group consisting of epoxy acrylates, silicones, and polyester acrylates. The polymer precurser coating on the metal sheet is irradiated with ultraviolet or an electron beam energy to polymerize the coating and heated to adhere the polymer to the microsurface of the metal sheet.
Abstract:
Disclosed is a method for making a substrate coated with an adhesive, comprising applying an electron beam modifiable adhesive layer onto a repeatably reusable transfer surface, irradiating the adhesive layer with an electron beam to chemically modify the adhesive layer, and transferring the irradiated adhesive layer to a substrate. Also disclosed is an adhesive coated web, comprising a substrate having at least one component susceptible to electron beam radiation degradation having no electron beam radiation modification and an adhesive layer having an electron beam modified composition and having no chemical, thermal, or ultraviolet crosslinking agent.
Abstract:
A process for producing products in web form comprising at least two layers, in which a composition emerging from an applicator is applied as a layer to a substrate in web form which is guided on a transport means, said application taking place with application of electrostatic charges, and the substrate coated with the composition is electrostatically neutralized before departing the applicator.
Abstract:
Process for the radiation crosslinking of double-sided adhesive tapes, in which a backing material coated on both sides with adhesives is irradiated asymmetrically from both sides with different doses in an irradiation means.
Abstract:
A thermally-stable cationic photoinitiator capable of flash vaporization under vacuum and temperature conditions of an available flash-evaporation chamber is selected. The photoinitiator is mixed with a cation-polymerizable monomer and/or oligomer of interest and the mixture is flash evaporated and condensed in conventional manner as a film on a cold substrate. The resulting vacuum-deposited, homogeneous layer is cured with a high-energy radiation source that causes the cationic photoinitiator to liberate acidic species that catalyze the crosslinking of the monomer/oligomer compounds in its deposited film form. As a result of the homogeneous, pinhole-free nature of the vacuum deposition process, the thin-film polymer product does not suffer from the disadvantages attendant to prior-art atmospheric processes for cationically-cured polymers. In addition, because of the versatility afforded by vacuum deposition, hybrid films of such polymers with inorganic materials are also easily manufactured in-line during the same process.
Abstract:
A thermally-stable cationic photoinitiator capable of flash vaporization under vacuum and temperature conditions of an available flash-evaporation chamber is selected. The photoinitiator is mixed with a cation-polymerizable monomer and/or oligomer of interest and the mixture is flash evaporated and condensed in conventional manner as a film on a cold substrate. The resulting vacuum-deposited, homogeneous layer is cured with a high-energy radiation source that causes the cationic photoinitiator to liberate acidic species that catalyze the crosslinking of the monomer/oligomer compounds in its deposited film form. As a result of the homogeneous, pinhole-free nature of the vacuum deposition process, the thin-film polymer product does not suffer from the disadvantages attendant to prior-art atmospheric processes for cationically-cured polymers. In addition, because of the versatility afforded by vacuum deposition, hybrid films of such polymers with inorganic materials are also easily manufactured in-line during the same process.
Abstract:
The present invention relates to a method of and a device for optimizing at least one coating material at at least one point of a substrate surface to which the coating material is applied. The method, which is carried out with the corresponding device, comprises at least the following steps: a) applying said at least one coating material to said at least one point of the substrate surface, b) curing said at least one coating material at said at least one point of the substrate surface, and c) determining the state, especially the curing and/or yellowing and/or gloss, of said coating material at said at least one point of the substrate surface, possessed by said coating material as a consequence of steps a) and b).
Abstract:
In a system for the application of a decorative layer made of a beam-curable coating mass, in particular out of lacquer, glue, adhesive or a mixture of some or all thereof (lacquer and glue, lacquer and adhesive, glue and adhesive, or lacquer, glue and adhesive), on a carrier-plate and/or a web-formed substrate, where the decorative-layer will be treated so long with high-energy radiation particularly UV-radiation, x-ray-radiation, laser-radiation and/or electron radiation, under the maintenance of a certain temperature at normal pressure, so that it will be crosslinked and/or polymerized until the decorative-layer has reached a desired hardness, it is provided, that the decorative layer, which has to be cured, as a shield against the influence of oxygen on one side, it will be covered by the from the substrate formed carrier-plate and on the other side, it will be covered by a foil, for example by a carrier foil, that the radiation of the decorative layer with high-energy, take place in an inert gas-free atmosphere and that a pressure in the heights of atmospheric pressure will be tuned and that during the effective time of the high-energy radiation, this pressure will be maintained.
Abstract:
The method for making a multilayer composite having one or more colors brings together a number of acrylic layers, which are partially cured in a first step and completely cured in a second step. The curing takes place with actinic radiation, such as accelerated electrons, UV radiation or X-ray radiation, the curing unit operating with different dosage rates during the two steps. The curable acrylic layers are applied to the respective supporting layers by screen printing or stencil printing, or else may be applied to the supporting layers by casting or with the aid of printing rollers.
Abstract:
A process for lacquer coating substrates with a colored and/or effect base lacquer and a clear lacquer topcoat, in which a colored and/or effect base lacquer layer of a base lacquer coating composition is applied onto a substrate and is provided in a wet-on-wet process with a clear lacquer coating. Before being jointly stoved or jointly cured with the base lacquer layer, the uncured clear lacquer layer is exposed to high-energy radiation. In the clear lacquer coating composition, the resin solids content contains 50 to 98 wt. % of a system A) thermally curable by addition and/or condensation reactions, which system contains substantially no free-radically polymerisable double bonds and substantially no groups capable of reacting in another way with free-radically polymerisable double bonds of a system B). The resin solids content further contains 2 to 50 wt. % of a system B) which is curable under the action of high-energy radiation by free-radical polymerisation of olefinic double bonds, wherein the weight percentages adds up to 100 wt. % and the C═C equivalent weight of the total resin solids content of A) and B) is between 300 and 10000. Clear lacquer coating compositions made by the process are also described.