Methods for fabricating three-dimensional objects by 3D-inkjet printing technology are provided. The methods utilize curable materials that polymerize via ring-opening metathesis polymerization (ROMP) for fabricating the object. Systems suitable for performing these methods and kits containing modeling material formulations usable in the methods are also provided.

A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; wherein the polymerizable composition of the liquid consists of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.

A free radical curable liquid for inkjet printing of food packaging materials includes no initiator or otherwise one or more initiators selected from the group consisting of non-polymeric di- or multifunctional initiators, oligomeric initiators, polymeric initiators, and polymerizable initiators; wherein the polymerizable composition of the liquid consists of: a) 25-100 wt % of one or more polymerizable compounds A having at least one acrylate group G1 and at least one second ethylenically unsaturated polymerizable functional group G2 different from the group G1; b) 0-55 wt % of one or more polymerizable compounds B selected from the group consisting of monofunctional acrylates and difunctional acrylates; and c) 0-55 wt % of one or more polymerizable compounds C selected from the group consisting of trifunctional acrylates, tetrafunctional acrylates, pentafunctional acrylates and hexafunctional acrylates.

Adhesive compositions disclosed herein can be applied to substrates using flexo-printing (via, e.g., photopolymer plate); cured to a hardened, tack-free state; and readily be rendered tacky on application of heat and pressure to accurately transfer foil to the substrates. An example adhesive composition includes a monomer component, an oligomer/resin component including one or more oligomers and one or more inert thermoplastic resins that are soluble in the monomers, and, where required, one or more free radical polymerization initiators.

Adhesive compositions disclosed herein can be applied to substrates using flexo-printing (via, e.g., photopolymer plate); cured to a hardened, tack-free state; and readily be rendered tacky on application of heat and pressure to accurately transfer foil to the substrates. An example adhesive composition includes a monomer component, an oligomer/resin component including one or more oligomers and one or more inert thermoplastic resins that are soluble in the monomers, and, where required, one or more free radical polymerization initiators.

A three-dimensional shaping composition of this invention is a three-dimensional shaping composition which is used for producing a three-dimensionally shaped article by laminating layers and contains particles having a hydrophilic surface and water-soluble monomers having a hydroxyl group. The water-soluble monomer is preferably at least one selected from the group consisting of 4-hydroxybutyl acrylate, 2-hydroxybutyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, and phenol epoxy acrylate.

A three-dimensional shaping composition of this invention is a three-dimensional shaping composition which is used for producing a three-dimensionally shaped article by laminating layers and contains particles having a hydrophilic surface and water-soluble monomers having a hydroxyl group. The water-soluble monomer is preferably at least one selected from the group consisting of 4-hydroxybutyl acrylate, 2-hydroxybutyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, and phenol epoxy acrylate.

To provide an active-energy-ray-curable composition including: a (meth)acrylic acid ester compound represented by General Formula (1) below, ##STR00001##
where in the General Formula (1), R.sub.1 represents a hydrogen atom or a methyl group, R.sub.2 represents a hydrogen atom, an alkyl group having from 1 through 5 carbon atoms, or an alkyloxy group having from 1 through 5 carbon atoms, n is an integer of from 0 through 5, and X represents an electron-withdrawing functional group.

To provide an active-energy-ray-curable composition including: a (meth)acrylic acid ester compound represented by General Formula (1) below, ##STR00001##
where in the General Formula (1), R.sub.1 represents a hydrogen atom or a methyl group, R.sub.2 represents a hydrogen atom, an alkyl group having from 1 through 5 carbon atoms, or an alkyloxy group having from 1 through 5 carbon atoms, n is an integer of from 0 through 5, and X represents an electron-withdrawing functional group.

A radiation-curable ink jet composition used in an ink jet printing apparatus including an ink jet head using a material with an SP value of 7.0 (J/cm.sup.3).sup.1/2 to 8.0 (J/cm.sup.3).sup.1/2 in a flow path is provided. The radiation-curable ink jet composition contains polymerizable monomers A including at least one polymerizable monomer B with an SP value of 7.0 (J/cm.sup.3).sup.1/2 or less or 8.0 (J/cm.sup.3).sup.1/2 or more and at least one polymerizable monomer C with an SP value of more than 7.0 (J/cm.sup.3).sup.1/2 to less than 8.0 (J/cm.sup.3).sup.1/2. The amount of the at least one polymerizable monomer B is 20% by mass or more relative to the total mass of the ink jet composition, and the amount of the at least one polymerizable monomer C is 22.5% by mass or less relative to the total mass of the ink jet composition.