Three-dimensional printing with food contact compliant agents
The present disclosure is drawn to food contact compliant three-dimensional printing kits, materials, compositions, systems, and methods. In one example, a multi-fluid kit of food contact compliant agents for three-dimensional printing can include a food contact compliant fusing agent and a food contact compliant detailing agent. The food contact compliant fusing agent can include from about 70 wt % to about 96 wt % water, from about 3 wt % to about 10 wt % by solids weight of a food contact compliant carbon black dispersion, and from about 1 wt % to about 25 wt % of a food contact compliant water-soluble first co-solvent. The food contact compliant detailing agent can include from about 75 wt % to about 99 wt % water and from about 0.01 wt % to about 1 wt % of a food contact compliant chelating compound.
1 . A multi-fluid kit of food contact compliant agents for three-dimensional printing, the multi-fluid kit comprising:
a food contact compliant fusing agent that is jettable from a fluid jet printer, the food contact compliant fusing agent comprising:
from about 70 wt % to about 96 wt % of water based on the total weight of the food contact compliant fusing agent;
a food contact compliant carbon black dispersion present in an amount of from about 3 wt % to about 10 wt % by solids weight of the carbon black dispersion out of the total weight of the food contact compliant fusing agent;
from 0.1 wt % to 0.3 wt % of dioctyl sulfosuccinate sodium salt;
a food contact compliant water-soluble first co-solvent present in the food contact compliant fusing agent in an amount of from about 1 wt % to about 25 wt % based on the total weight of the food contact compliant fusing agent, wherein the food contact compliant water-soluble first co-solvent comprises glycerol and polyethylene glycol; and
2-phenoxyethanol,
wherein the food contact compliant fusing agent is devoid of sodium dodecyl sulfate; and
a food contact compliant detailing agent comprising:
from about 75 wt % to about 99 wt % of water based on the total weight of the food contact compliant detailing agent;
a food contact compliant chelating compound present in an amount of from about 0.01 wt % to about 1 wt % based on the total weight of the food contact compliant detailing agent; and
2-phenoxyethanol.
2 . The multi-fluid kit of claim 1 , wherein the food contact compliant detailing agent further comprises a food contact compliant water-soluble second co-solvent present in an amount of from about 2 wt % to about 24 wt % based on the total weight of the food contact compliant detailing agent, wherein the food contact compliant water-soluble second co-solvent comprises glycerol and propylene glycol.
3 . The multi-fluid kit of claim 1 , wherein:
the 2-phenoxyethanol is present in the food contact compliant fusing agent in an amount of from about 0.2 wt % to about 1 wt % based on the total weight of the food contact compliant fusing agent; and
the 2-phenoxyethanol is present in the food contact compliant detailing agent in an amount of from about 0.2 wt % to about 1 wt % based on the total weight of the food contact compliant detailing agent.
4 . The multi-fluid kit of claim 1 , wherein the food contact compliant detailing agent comprises from about 75 wt % to about 80 wt % of the water based on the total weight of the food contact compliant detailing agent.
5 . The multi-fluid kit of claim 1 , wherein the food contact compliant chelating compound of the food contact compliant detailing agent is disodium ethylenediaminetetraacetate dihydrate.
6 . A three-dimensional printing kit, comprising:
a food contact compliant fusing agent that is jettable from a fluid jet printer, the food contact compliant fusing agent comprising:
from about 70 wt % to about 96 wt % of water based on the total weight of the food contact compliant fusing agent;
a food contact compliant carbon black dispersion present in an amount of from about 3 wt % to about 10 wt % by solids weight of the carbon black dispersion out of the total weight of the food contact compliant fusing agent;
from 0.1 wt % to 0.3 wt % of dioctyl sulfosuccinate sodium salt;
a food contact compliant water-soluble first co-solvent present in the food contact compliant fusing agent in an amount of from about 1 wt % to about 25 wt % based on the total weight of the food contact compliant fusing agent, wherein the food contact compliant water-soluble first co-solvent comprises glycerol and polyethylene glycol; and
2-phenoxyethanol,
wherein the food contact compliant fusing agent is devoid of sodium dodecyl sulfate;
a food contact compliant detailing agent comprising:
from about 75 wt % to about 99 wt % of water based on the total weight of the food contact compliant detailing agent;
a food contact compliant chelating compound present in an amount of from about 0.01 wt % to about 1 wt % based on the total weight of the food contact compliant detailing agent; and
2-phenoxyethanol; and
a thermoplastic polymer powder.
7 . The three-dimensional printing kit of claim 6 , wherein the thermoplastic polymer powder is selected from the group consisting of polyamide-6 powder, polyamide-9 powder, polyamide-11 powder, polyamide-12 powder, polyamide-66 powder, polyamide-612 powder, polyethylene powder, thermoplastic polyurethane powder, thermoplastic polyamide powder, polypropylene powder, polyester powder, polycarbonate powder, polyether ketone powder, polyacrylate powder, polystyrene powder, polyvinylidene fluoride powder, and a combination thereof.
8 . The three-dimensional printing kit of claim 6 , wherein the thermoplastic polymer powder has an average particle size of from about 10 microns to about 200 microns.
9 . The three-dimensional printing kit of claim 6 , wherein:
the food contact compliant detailing agent comprises from about 75 wt % to about 80 wt % of the water based on the total weight of the food contact compliant detailing agent;
the food contact compliant chelating compound is disodium ethylenediaminetetraacetate dihydrate; and
the food contact compliant detailing agent further comprises a food contact compliant water-soluble second co-solvent present in an amount of from about 2 wt % to about 24 wt % based on the total weight of the food contact compliant detailing agent.
10 . A three-dimensional printing system, comprising:
a powder bed comprising a thermoplastic polymer powder;
a fluid jet printer, comprising:
a first fluid ejector in communication with a reservoir of a food contact compliant fusing agent to jet the food contact compliant fusing agent onto the powder bed, wherein the food contact compliant fusing agent comprises:
about 70 wt % to about 96 wt % of water based on the total weight of the food contact compliant fusing agent;
a food contact compliant carbon black dispersion present in an amount of from about 3 wt % to about 10 wt % based on the total weight of the food contact compliant fusing agent;
from 0.1 wt % to 0.3 wt % of dioctyl sulfosuccinate sodium salt;
a food contact compliant water-soluble first co-solvent present in the food contact compliant fusing agent in an amount of from about 1 wt % to about 25 wt % based on the total weight of the food contact compliant fusing agent, wherein the food contact compliant water-soluble first co-solvent comprises glycerol and polyethylene glycol; and
2-phenoxyethanol,
wherein the food contact compliant fusing agent is devoid of sodium dodecyl sulfate; and
a second fluid ejector in communication with a reservoir of a food contact compliant detailing agent to print the food contact compliant detailing agent onto the powder bed, wherein the food contact compliant detailing agent comprises:
from about 75 wt % to about 99 wt % of water based on the total weight of the food contact compliant detailing agent;
a food contact compliant chelating compound present in an amount of from about 0.01 wt % to about 1 wt % based on the total weight of the food contact compliant detailing agent; and
2-phenoxyethanol; and
a fusing radiation source to expose the powder bed to electromagnetic radiation sufficient to fuse thermoplastic polymer powder that has been printed with the food contact compliant fusing agent.
11 . The three-dimensional printing system of claim 10 , wherein:
the food contact compliant detailing agent comprises from about 75 wt % to about 80 wt % of the water based on the total weight of the food contact compliant detailing agent;
the food contact compliant chelating compound is disodium ethylenediaminetetraacetate dihydrate; and
the food contact compliant detailing agent further comprises a food contact compliant water-soluble second co-solvent present in an amount of from about 2 wt % to about 24 wt % based on the total weight of the food contact compliant detailing agent.