Printable film

Patent metadata

Field	Value
Publication number	US-10131173-B2
Application number	US-201515564176-A
Country	US
Kind code	B2
Filing date	Jul 9, 2015
Priority date	Jul 9, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A printable film that contains a base film substrate and an image receiving layer. The film substrate is a polyethylene terephthalate base film substrate that contains inorganic particles and that has an opacity ranging from about 50 to about 95. The image receiving layer comprises, at least, a polymeric network, poly-alkene polymeric compounds and inorganic compounds. Also disclosed herein is the method for obtaining the printable film.

First claim

The invention claimed is:

1. A printable film comprising:
a. a polyethylene terephthalate base film substrate that contains inorganic particles and that has an opacity ranging from about 50 to about 95; and
b. an image receiving layer that comprises, at least, a polymeric network, poly-alkene polymeric compounds and inorganic compounds, wherein the poly-alkene polymeric compounds are polytetrafluoroethylenes, polyamide or polyethylene polymer particles.

2. The printable film of claim 1 wherein the polyethylene terephthalate base film substrate further comprise a tie layer.

3. The printable film of claim 2 wherein the tie layer is a copolymer emulsion of butyl acrylate-ethyl acrylate.

4. The printable film of claim 1 that has a thickness comprised between 80 μm and 250 μm.

5. The printable film of claim 1 wherein the polyethylene terephthalate base film substrate has an opacity that is ranging from about 60 to about 90.

6. The printable film of claim 1 wherein the polyethylene terephthalate base film contains inorganic particles that have particle size between about 500 nm and about 600 nm.

7. The printable film of claim 1 wherein the polyethylene terephthalate base film contains inorganic particles that are metal oxide particles.

8. The printable film of claim 1 wherein the polyethylene terephthalate base film contains at least two different inorganic particles.

9. A printable film, comprising:
a. a polyethylene terephthalate base film substrate that contains at least two different inorganic particles and that has an opacity ranging from about 50 to about 95, wherein the polyethylene terephthalate base film has a first type of inorganic particles with a refractive index (n) that is superior or equal to 1.8; and
b. an image receiving layer that comprises, at least, a polymeric network, poly-alkene polymeric compounds and inorganic compounds.

10. A printable film, comprising:
a. a polyethylene terephthalate base film substrate that contains at least two different inorganic particles and that has an opacity ranging from about 50 to about 95, wherein the polyethylene terephthalate base film has a second type of inorganic particles with a refractive index (n) that is between 0.4 and 1.8; and
b. an image receiving layer that comprises, at least, a polymeric network, poly-alkene polymeric compounds and inorganic compounds.

11. The printable film of claim 8 wherein the polyethylene terephthalate base film comprises a first type of inorganic particles which is titanium dioxide and a second type of inorganic particles which is calcium carbonate.

12. The printable medium of claim 1 wherein the polymeric network, in the image receiving layer, is formed by using vinyl-urethane hybrid copolymers or acrylic-urethane hybrid polymers.

13. A printable recording medium having a polyethylene terephthalate base film substrate having a tie layer which is a copolymer emulsion of butyl acrylate-ethyl acrylate and that has been through a corona treatment, and an image receiving layer, wherein the base film contains at least two different inorganic particles: a first type with a refractive index that is superior or equal to 1.8 and a second type with a refractive index that is between 0.4 and 1.8.

14. A method for forming a printable film comprising:
a. providing a polyethylene terephthalate base film that contains inorganic particles and that has an opacity ranging from about 50 to about 95;
b. coating an image receiving layer that comprises, at least, a polymeric network, poly-alkene polymeric compounds and inorganic compounds on one side of the base film, wherein the poly-alkene polymeric compounds are polytetrafluoroethylenes, polyamide or polyethylene polymer particles; and
c. drying the coating in order to obtain a printable film.

15. The printable film of claim 1 wherein polyethylene terephthalate base film substrate is semi-transparent and has an opacity that is ranging from about 68 to about 82.

16. The printable film of claim 1 wherein the image receiving layer further includes a non-reactive polymeric substance.

17. The printable film of claim 1 wherein the image receiving layer further includes a water-soluble high-valence metal complex.

18. The printable film of claim 1 wherein the image receiving layer further includes an ionic polymeric compound.

19. The method of claim 14 , further comprising applying a tie layer on the polyethylene terephthalate base film.

Assignees

• Hewlett Packard Development Co

Inventors

• Zhou Xiaoqi
• Pirayesh Francois K

Classifications

• B41M5/5254

  characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers · CPC title

• B41M5/5263

  characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• B41M5/5218

  characterised by inorganic additives, e.g. pigments, clays · CPC title

• B41M3/008

  Sequential or multiple printing, e.g. on previously printed background; Mirror printing; Recto-verso printing; using a combination of different printing techniques; Printing of patterns visible in reflection and by transparency; by superposing printed artifacts · CPC title

• B41M5/506

  Intermediate layers · CPC title