US 11,028,205 B2Granted

Water-breakable formulations and additive manufacturing processes employing same

AssigneeStratasys, Inc.

InventorsTal Ely, Mariana Pokrass, Dani Peri, Avraham Levy, Dana Tenne

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Abstract

Curable formulations which form cured materials that are breakable upon immersion in water are disclosed. The cured materials break into a plurality of particles being a few millimeters or less in size. Methods of fabricating three-dimensional objects utilizing the curable formulations are also disclosed, as well as model objects fabricated thereby. The curable formulations include at least a mono-functional curable material and a multi-functional curable material, as described in the specification.

Claims22

Dependent claims

A curable formulation comprising at least one mono-functional curable material and at least one multi-functional curable material, said mono-functional and multi-functional curable materials and a concentration ratio thereof being selected such that a cured material formed upon exposing the formulation to a curing energy breaks into particles upon immersion in an aqueous solution,

wherein:
said cured material breaks upon said immersion into particles having a size ranging from 1 micron to 100 mm;
and/or
said cured material features a degree of cross linking that ranges from 10 to 80%;
and/or
said cured material has a swelling capacity of from 10 to 300% by weight;
and/or
a 3-gram cube made of said cured material breaks upon static immersion in water in less than 10 hours.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/070,280Filed 15 Jan 2017 · us provisional application
Priority: 15 Jan 2016
Published: US 2019/0010270 A110 Jan 2019
Granted: 8 Jun 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

B29C 64/40
Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive…
B29C 64/112
Using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material: using individual droplets, e.g. from jetting heads
B33Y 40/10
Auxiliary operations or equipment, e.g. for material handling: pre-treatment
B33Y 40/20
Auxiliary operations or equipment, e.g. for material handling: post-treatment, e.g. curing, coating or polishing

Family

Application62/279,002Us provisional application · filed 15 Jan 2016
US 2019/0010270 A1Pre-grant publication · published 10 Jan 2019
US 11,028,205 B2This patent

From the US filing history. Foreign family members aren’t listed.

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