The present invention relates to an easy-to-recycle laminated structure containing at least one layer of cellulose material in order to easily separate the layer of cellulose material from the polymer or aluminium layer by dissolving, in an aqueous medium, the lamination adhesive or a layer of primer pre-applied between the cellulose layer and the polymer or aluminium film, for subsequent lamination of this layer, using conventional water-based, solvent-based or solvent-free lamination adhesives, with a polymer film or aluminium film.
B32B 23/08 - Layered products essentially comprising cellulosic plastic substances comprising such substance as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 33/00 - Layered products characterised by particular properties or particular surface features, e.g. particular surface coatingsLayered products designed for particular purposes not covered by another single class
A multilayer structure may include a polyethylene-based polymeric film comprising: a sealing layer; at least one middle layer; and a printing layer; and an external layer of ultraviolet or electron beam curable ink or varnish cured on the printing layer of the polyethylene-based polymeric substrate, wherein the multilayer structure has a thermal surface resistance such that when sealing bars are applied to the polyethylene-based polymeric film in cycles of sealing of no more than 2 seconds and at a temperature corresponding to the melting temperature of the polyethylene, the sealing bars remain free of polymer.
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B65D 75/00 - Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
3.
MULTILAYER STRUCTURES, STAND-UP POUCHES, AND METHODS THEREOF
A multilayer structure may include a polyethylene-based polymeric film comprising: a sealing layer; at least one middle layer; and a printing layer; and an external layer of ultraviolet or electron beam curable ink or varnish cured on the printing layer of the polyethylene-based polymeric substrate, wherein the multilayer structure has a thermal surface resistance such that when sealing bars are applied to the polyethylene-based polymeric film in cycles of sealing of no more than 2 seconds and at a temperature corresponding to the melting temperature of the polyethylene-based polymeric film, the sealing bars remain free of polymer.
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
The present application relates to methods of manufacturing a laminate comprising coating at least a portion of at least a first substrate with a last down energy-curable adhesive ink; applying at least a second substrate to the coated portion of the first substrate to form a laminate; and curing the laminate. The present application further relates to adhesive ink compositions comprising at least one acrylate monomer, at least one pigment, at least one wetting agent, and at least one dispersing agent.
B32B 37/02 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
7.
Flexographic printing process with wet on wet capability
The invention refers to a flexographic printing process with wet on wet capability based on controlled polymer or polymer segment precipitation that leads to gel formation of ink compounds by controlling the solubility parameter of the ink system. The mechanism to obtain a desirable wet on wet color trapping is the formation and/or presence of a gel in the applied ink film due to a controlled physicochemical mechanism of resin precipitation. This is accomplished either by controlling a change in the Hansen Solubility Parameter of the liquid in the ink through evaporation of some or all of a non-reactive and volatile solvent, or alternatively by use of a polymer comprised of two distinct and separate segments one of which is soluble in the monomer/oligomer mix and the other of which is not. The insoluble segments form a reversible gel that is broken to a liquid by shear in the application process, allowing application of a liquid ink, and is reestablished in the applied ink film in such a manner and with such strength as to allow overprinting in the wet on wet flexographic printing process.
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
B41F 5/24 - Rotary letterpress machines for flexographic printing
B41F 23/04 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing by heat drying, by cooling, by applying powders
B41F 35/04 - Cleaning arrangements or devices for inking rollers
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
B41F 31/02 - Ducts, containers, supply or metering devices
8.
Apparatus for flexographic printing process with wet on wet capability
The present disclosure is related to an apparatus for a flexographic printing process with wet on wet capability based on controlled polymer or polymer segment precipitation that leads to gel formation of ink compounds by controlling the solubility parameter of the ink system. Insoluble segments in the ink form a reversible gel that is broken to a liquid by heat and/or shear forces during the application process, allowing application of a liquid ink. After application, the ink reverts to its gel state with such strength as to allow overprinting in the wet on wet flexographic printing process. The disclosure is also related to a flexographic printing apparatus comprising a feeding system for providing a flexographic ink, wherein the ink in a liquid state has a viscosity ranging from about 100 cps to about 4,000 cps, and the ink in a gel state has a measurable hardness.
B41F 31/02 - Ducts, containers, supply or metering devices
C09D 11/107 - Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
B41F 5/24 - Rotary letterpress machines for flexographic printing
B41F 23/04 - Devices for treating the surfaces of sheets, webs or other articles in connection with printing by heat drying, by cooling, by applying powders
B41F 35/04 - Cleaning arrangements or devices for inking rollers
C09D 11/101 - Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
9.
Ink for use in a flexographic printing process with wet on wet capability
A flexographic printing ink for use in a flexographic printing process with wet on wet capability, comprising a polymer and a combination of liquids comprising radiation curable monomers and/or oligomers, diluents, colorants, additives, and photoinitiators, the components having the Hansen Solubility Parameters adjusted to generate an ink with a capability to form a gel having the required physical characteristics, and that is in a liquid form in the presence of a small quantity of non reactive solvent, or is brought to a liquid state during the printing process. The disclosure is also directed to a flexographic printing process with wet on wet capability based on controlled polymer or polymer segment precipitation that leads to gel formation of ink compounds by controlling the solubility parameter of the ink system.
The present invention refers to a "Method for pasty ink flexography printing associated to ink load variation due to thermal modulation" developed to allow a novel printing technology in central drum flexography equipments with high viscosity inks and 100% solids with later UV radiation (UV) or electron beam (EB) curing. The invention provides a central drum flexographic printing system which by means of modifications in the inking systems allows applying high viscosity inks with no intermediate drying or curing system between the successive appliance of several colors having only the final drying with a curing device, preferably based on electron beam or optionally by actinic radiation (UV light).
The invention refers to a flexographic printing process with wet on wet capability based on controlled polymer or polymer segment precipitation that leads to gel formation of ink compounds by controlling the solubility parameter of the ink system. The mechanism to obtain a desirable wet on wet color trapping is the formation and/or presence of a gel in the applied ink film due to a controlled physicochemical mechanism of resin precipitation. This is accomplished either by controlling a change in the Hansen Solubility Parameter of the liquid in the ink through evaporation of some or all of a non-reactive and volatile solvent, or alternatively by use of a polymer comprised of two distinct and separate segments one of which is soluble in the monomer/oligomer mix and the other of which is not. The insoluble segments form a reversible gel that is broken to a liquid by shear in the application process, allowing application of a liquid ink, and is reestablished in the applied ink film in such a manner and with such strength as to allow overprinting in the wet on wet flexographic printing process.
