9 results about "Flexographic ink" patented technology

The object of the present invention is to provide an aqueous flexographic ink that achieves a balance of long-term stability, color density, leveling properties, and retort resistance. [Solution] The above problem is solved by providing a heat-resistant organic pigment, a binder resin, and water, wherein the bulk density of the heat-resistant organic pigment is 0.15 g / cm³. 3 The above is a water-based flexographic ink, or one containing a heat-resistant organic pigment, a binder resin, and water, wherein the bulk density of the heat-resistant organic pigment is 0.15 g / cm³. 3 The above problem can be solved with water-based flexographic ink that is resistant to retort processing.

The present invention provides a water-based flexographic ink that is excellent in plate-clogging properties, stability over time, print density, and other properties. [Solution] An aqueous flexographic ink comprising a colorant, an aqueous acrylic resin (A), an aqueous medium, and a water-soluble styrene-maleic acid resin, wherein the content of the colorant is 20 mass% or more in 100 mass% of the aqueous flexographic ink; or an aqueous flexographic ink wherein the solids mass ratio of the colorant to the water-soluble styrene-maleic acid resin is 60:40 to 99:1.

The invention discloses a manufacturing process for an environmentally friendly paper packaging bag. A paper film bag obtained by the invention completely uses paper for packaging and avoids the degradation problem caused by the use of plastic films, such that the paper film bag can be sufficiently degraded; to prevent adhesive diffusion during heat sealing, a special water-based heat-sensitive adhesive is used to ensure stable adhesion during heat sealing; and a front side of a paper sheet is flexographically printed with an aqueous flexographic ink, such that the packaging bag obtained by the manufacturing process can package a product completely with paper and does not use any plastic materials, thereby being quickly degradable after being discarded, avoiding pollution, and more environmentally friendly from production to application.

To provide an easily adhesive polyester film having an easily adhesive layer which is excellent in antistatic property, suppresses transition of an antistatic agent in the easily adhesive layer to other article contacting the easily adhesive layer and a back surface of the film itself, and is excellent in adhesion to aqueous flexographic ink.SOLUTION: An aqueous flexographic easily adhesive polyester film has an easily adhesive layer on at least one surface of a polyester film, in which the easily adhesive layer is obtained by curing a composition containing an ion conductive antistatic agent, a polyester-based resin and a polycarbonate urethane resin, a surface resistivity of the surface of the easily adhesive layer is 1.0×1013 Ω / sq. or less, and a surface resistivity of the surface of the other polyester film contacting the surface of the easily adhesive layer after the other polyester film is brought into contact with the surface of the easily adhesive layer, and is held at 50°C under pressurization of 1 kg / cm2 for 3 days or more is 1.0×1014 Ω / sq. or more.SELECTED DRAWING: None

The present invention aims to provide a method for manufacturing printed materials that satisfies all requirements of trapping properties, long-run suitability, blocking resistance, and laminate strength. [Solution] A method for producing gravure or flexographic ink comprising a pigment, a binder resin, a hydrocarbon wax, and an organic solvent, comprising a dispersion step of mill-dispersing the hydrocarbon wax in the presence of the organic solvent to adjust the average particle size (D50) of the hydrocarbon wax in the particle size distribution to 4 μm to 20 μm.

The publicly disclosed method for manufacturing composite sheets for pharmaceutical packaging is as follows: S1 Mix 12-19 parts of LLDPE granules, 65-72 parts of LDPE granules, 12-18 parts of titanium dioxide, and 0.6-1.2 parts of silica, heat to melt and extrude, blow into film, cool and form, and rotate and roll to obtain the middle layer milky white PE film; S2 Flexographically print graphics on the inner surface of the outer PE film; S3 Compositely connect the obtained middle layer milky white PE film and the outer PE film with printed graphics to form a semi-finished composite sheet structure; S4 Solventlessly composite the semi-finished composite sheet with an Al barrier film and an inner PE film in sequence using EAA adhesive to form a composite sheet structure of "outer PE film layer - flexographic ink layer - middle milky white PE film layer - first EAA adhesive layer - Al barrier film layer - second EAA adhesive layer - inner PE film layer". In this manufacturing method, the self-made intermediate milky white PE film layer meets the whiteness standard and is thin and flat. It can reduce the overall thickness of the composite sheet while maintaining whiteness, thereby improving the quality problem of bulging edges caused by excessive thickness.

The invention discloses a manufacturing process for an environmentally friendly paper packaging bag. A paper film bag obtained by the invention completely uses paper for packaging and avoids the degradation problem caused by the use of plastic films, such that the paper film bag can be sufficiently degraded; to prevent adhesive diffusion during heat sealing, a special water-based heat-sensitive adhesive is used to ensure stable adhesion during heat sealing; and a front side of a paper sheet is flexographically printed with an aqueous flexographic ink, such that the packaging bag obtained by the manufacturing process can package a product completely with paper and does not use any plastic materials, thereby being quickly degradable after being discarded, avoiding pollution, and more environmentally friendly from production to application.

To provide a gravure or flexographic ink excellent in storage stability, laminate strength and heat seal strength when laminated, and plate fogging properties and plate clogging properties during printing.SOLUTION: The gravure or flexographic ink contains a pigment, a polyurethane resin, a vinyl chloride copolymer resin and / or a cellulosic resin, and an acidic compound, wherein the acidic compound contains a block copolymer having a structure derived from a polyether and / or a polyester.SELECTED DRAWING: None

This invention discloses a low-odor flexographic ink for breathable membranes and its preparation method, belonging to the field of water-based flexographic ink technology. It aims to solve the technical problems of existing flexographic inks for breathable membranes, such as strong odor, high VOC emissions, severe damage to breathability, poor adhesion to PE substrates, insufficient abrasion resistance and storage stability, and the inability to synergistically improve multiple performance aspects. The ink of this invention uses a core-shell structured water-based acrylic composite emulsion as the core film-forming component, combined with optimized proportions of composite pigments, low-odor film-forming aids, and composite dispersants; and is equipped with a pre-dispersion, grinding, paint mixing, and filtration / degassing preparation process. The resulting ink can synergistically achieve low odor and low VOC, high breathability retention, strong adhesion, high abrasion resistance, and high storage stability, making it suitable for the flexographic printing needs of PE breathable membranes in hygiene products, medical protective equipment, food packaging, and other fields.