Adhesive material composition and method

Patent metadata

Field	Value
Publication number	US-2015136301-A1
Application number	US-201414541076-A
Country	US
Kind code	A1
Filing date	Nov 13, 2014
Priority date	Nov 13, 2013
Publication date	May 21, 2015
Grant date	—

Abstract

An adhesive material includes a vinyl polymer and a solvent that includes xylene and toluene. The adhesive material has a viscosity in the range from about 1.0 cP to about 20.0 cP such that the adhesive material can be applied to a surface using an ink jet print head.

First claim

We claim:

1 . An adhesive material comprising a vinyl polymer and a solvent that includes xylene and toluene, wherein the adhesive material has a viscosity in the range from about 1.0 cP to about 20.0 cP such that the adhesive material can be applied to a surface using an ink jet print head.

2 . The adhesive material of claim 1 , wherein the viscosity is in the range from about 1.0 cP to about 8.8 cP.

3 . The adhesive material of claim 1 , wherein the vinyl polymer comprises a terpolymer of ethylene, vinyl acetate, and maleic anhydride.

4 . The adhesive material of claim 1 , wherein the vinyl polymer has an average number molecular weight in the range of from about 30,000 to about 40,000 g/mol.

5 . The adhesive material of claim 1 , wherein the adhesive material does not degrade gamma butyrolactone and n-methyl-2-pyrrolidone.

6 . The adhesive material of claim 1 , wherein the ratio by weight of toluene to xylene ranges from about 1.125:1 to about 1.222:1.

7 . The adhesive material of claim 1 , further comprising a further polymer.

8 . The adhesive material of claim 7 , wherein the further polymer is a terpolymer of ethylene, ethyl acrylate, and maleic anhydride.

9 . The adhesive material of claim 1 , further comprising one of a surfactant, a further polymer, a leveling agent, an inorganic compound, an organic compound, dielectric particles, dielectric resins, and compounds having electrically insulative properties.

10 . The adhesive material of claim 1 , wherein the surface comprises one of a substrate and an intermediate layer disposed atop the substrate.

11 . The adhesive material of claim 10 , wherein the substrate comprises one of copper and aluminum.

12 . The adhesive material of claim 10 , wherein the intermediate layer comprises one of an insulator material and a cathode material.

13 . The adhesive material of claim 10 , wherein the surface includes a portion of a substrate and a portion of an intermediate layer disposed on the substrate.

14 . The adhesive material of claim 1 , further comprising a device for use in an ink jet print operation comprising:
a housing; a series of ejection nozzles mounted within the housing, each ejection nozzle capable of ejecting a drop on demand; and a source of the adhesive material communicating with the nozzles.

15 . An adhesive adapted to be applied using an ink jet print head, comprising:
from about 1% to about 8% by weight of a vinyl polymer; from about 1% to about 98% by weight of toluene; and from about 1% to about 98% by weight of xylene; and up to about 1.5% by weight of a surfactant; wherein the adhesive has a viscosity such that the adhesive can be jetted by the ink jet print head.

16 . The adhesive of claim 15 , wherein the vinyl polymer is present in an amount from about 2% to about 7% by weight; wherein the toluene is present in an amount ranging from about 30% to about 68% by weight; and wherein the xylene is present in an amount of about 30% to about 68% by weight.

17 . The adhesive of claim 15 , wherein the vinyl polymer is present in an amount from about 4% to about 5% by weight; wherein the toluene is present in an amount ranging from about 45% to about 55% by weight; and wherein the xylene is present in an amount ranging from about 40% to about 45% by weight.

18 . The adhesive of claim 15 , wherein the ratio by weight of toluene to xylene ranges from about 1.125:1 to about 1.222:1.

19 . The adhesive of claim 15 , further comprising a heat-resistant polymer.

20 . A method of manufacturing a battery using an ink jet print head comprising the steps of:
jetting an adhesive onto a surface, and wherein the adhesive material comprises a solvent and has a viscosity in the range from about 1.0 cP to about 20.0 cP; and vaporizing a portion of the solvent.

21 . The method of claim 20 , wherein the adhesive material comprises a vinyl polymer and a solvent that includes xylene and toluene, and wherein the viscosity of the adhesive material is in the range from about 1.0 cP to about 8.8 cP.

22 . The method of claim 20 , wherein a majority of the solvent is vaporized.

23 . The method of claim 20 , wherein the surface comprises a metallic substrate.

24 . The method of claim 23 , wherein the substrate is heated to promote evaporation of the solvent.

25 . The method of claim 24 , wherein the substrate is heated to a temperature in the range from about 23° C. to about 176° C.

26 . The method of claim 20 , further comprising the step of laminating the battery at a temperature of at least 135° C.

27 . The method of claim 20 , wherein the adhesive forms a layer having a thickness of from about 10 microns to about 12 microns.

28 . The method of claim 20 , wherein the adhesive is jetted by an ink jet print head, and wherein the step of jetting includes relative movement of the ink jet print head over the surface to form a layer thereon.

29 . The method of claim 28 , wherein the relative movement includes up to 50 passes.

30 . The method of claim 29 , wherein the relative movement includes up to about 30 passes.

31 . The method of claim 30 , wherein the relative movement includes up to about 15 passes.

Assignees

• Donnelley & Sons Co

Inventors

• Cyman Jr Theodore F
• Hook Kevin J
• Geddes Pamela
• Murzynowski Alan R
• Blease James W
• Kanfoush Daniel E

Classifications

• H01M4/08

  Processes of manufacture · CPC title

• C09J5/00

  Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers · CPC title

• C09J133/14 Primary

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09J131/04

  Homopolymers or copolymers of vinyl acetate · CPC title

• C09J5/06

  involving heating of the applied adhesive · CPC title