Finishing system for 3d printed components

Patent metadata

Field	Value
Publication number	US-2017210063-A1
Application number	US-201515500550-A
Country	US
Kind code	A1
Filing date	Aug 3, 2015
Priority date	Aug 4, 2014
Publication date	Jul 27, 2017
Grant date	—

Abstract

Finishing system for a 3D printed object involves applying a film to an outer surface of the object in order to hide surface artifacts associated with the 3D printing process that created the object.

First claim

1 . A method of modifying a surface of a three dimension printed object made by sequential 3D layer buildup and having at least a first surface, the method comprising:
applying a stretchable adhesive-backed film to the first surface of a three dimension printed object having step-type printing artifacts, wherein the adhesive backed film comprises a substrate having a first major surface and a second major surface, and wherein the second major surface has an adhesive layer disposed thereon; wherein applying comprises stretching the area of the adhesive-backed film, and pressing the area onto an area of the first surface; and wherein the step-type printing artifacts associated with the area of the first surface are substantially undetectable after the applying step.

2 . The method of claim 1 , wherein applying further comprises brining the adhesive layer into intimate contact with the first surface.

3 . The method of claim 1 , further comprising:
pretreating the first surface before applying the adhesive-backed film.

4 . The method of claim 1 , wherein the adhesive layer comprises a pressure sensitive adhesive.

5 . The method of claim 1 , wherein applying further comprises applying heat to the area of the adhesive backed film, and wherein pressing the area comprises pressing the heated area of the adhesive backed film.

6 . The method of claim 1 , wherein the stretchable adhesive-backed film is a compliant film.

7 . The method of claim 1 , wherein the adhesive layer is a continuous adhesive layer.

8 . The method of claim 1 , wherein the substrate has a nominal thickness, and the adhesive layer has a nominal thickness, and wherein the nominal thickness of the substrate and the adhesive layer together is between 0.5 mils and 15 mils.

9 . The method of claim 1 , wherein the pressing that is done as part of the applying step is done with a squeegee.

10 . The method of claim 1 , wherein first major surface of the substrate comprises a functional surface.

11 . The method of claim 10 , wherein the functional surface comprises an abrasive surface.

12 . The method of claim 10 , wherein the functional surface comprises an electrically conductive surface.

13 . The method of claim 10 , wherein the functional surface comprises a light manipulation surface.

14 . The method of claim 1 , wherein the substrate comprise a composite film.

15 . The method of claim 1 , further comprising:
printing a graphic on the substrate.

16 . The method of claim 15 , further comprising:
printing fiducial marks upon the substrate, wherein the fiducial marks correspond with particular points on the three dimensional printed object.

17 . The method of claim 16 , wherein the three dimensional printed object includes printed indicia that correspond to at least some of the fiducial marks, and wherein applying further comprises aligning the fiducial marks to associated indicia.

18 . The method of claim 15 , wherein printing the graphic on the substrate comprises printing a distorted image on the substrate, the distorted image distorted such to appear not distorted after the applying step.

19 . The method of claim 1 , wherein the substrate comprises a thermoplastic film.

20 . The method of claim 1 , wherein the adhesive layer comprises a thermosettable adhesive, and wherein the applied heat is sufficient to initiate thermoset cure associated with the thermosettable adhesive.

21 . A surface modified three dimensional printed object, comprising:
a three dimensional printed part having a first surface with step-type printing artifacts; a stretchable adhesive-backed film comprising a substrate having a first major surface and a second major surface, the second major surface interfacing with an adhesive layer; and wherein the adhesive layer couples the substrate to the first surface, and the step-type printing artifacts associated with an area of the first surface are substantially undetectable.

22 . The surface modified three dimensional printed object of claim 21 , wherein the substrate is a printed substrate.

23 . The surface modified three dimensional printed object of claim 22 , wherein the adhesive layer is in intimate contact with the first surface.

24 . The surface modified three dimensional printed object of claim 21 , wherein the first surface of the substrate is a functional surface.

25 . The surface modified three dimensional printed object of claim 24 , wherein the functional surface comprises a light manipulation surface.

26 . The surface modified three dimensional printed object of claim 21 , wherein the adhesive layer and the substrate have nominal thicknesses, and the combined nominal thickness of the adhesive layer and the substrate is between 0.5 mils and 10 mils.

Assignees

• 3M Innovative Properties Co

Inventors

• Andres Christine M
• Bryan William J
• Schultz John C
• Kesti Michael R
• Allen Richard C

Classifications

• B29K2101/12

  Thermoplastic materials · CPC title

• B29C64/118

  using filamentary material being melted, e.g. fused deposition modelling [FDM] · CPC title

• B29K2995/0037

  Other properties · CPC title

• B29C64/188

  involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control (surface shaping B29C59/00; after-treatment of articles without altering their shape B29C71/00) · CPC title

• B29K2105/0097

  Glues or adhesives, e.g. hot melts or thermofusible adhesives · CPC title