Claims
- 1. A method for making and screening many formulations of pressure sensitive adhesives in a rapid manner to achieve a target adhesion performance from a screened formulation comprising:
specifying desired target adhesion performance for any formulation selecting starting components to be used; designing a plurality of pressure sensitive adhesive formulations with said starting components using experimental design techniques; dispensing the said starting components to generate the said plurality of formulations; mixing each of the said plurality of formulations in order to uniformly disperse the said starting components; depositing the said plurality of formulations onto a substrate to form an array; processing all members of—the said array—into a plurality of coatings on the said substrate; treating of said plurality of coatings using a drying or curing process; testing the said plurality of coatings for compatibility performance and adhesion performance; and analyzing the compatibility performance and adhesion performance in order to identify any of the said formulations that display the said desired target performance.
- 2. The method of claim 1 wherein said starting components comprise at least one of base polymers, tackifiers, and blends of polymers.
- 3. The method of claim 2 wherein the starting components further comprise at least one of fillers, waxes, cross-linkers and plasticizers.
- 4. The method of claim 1 wherein the method further comprises the step of screening the plurality of coatings in order to determine compatibility performance by assessing haziness of the plurality of coatings
- 5. The method of claim 4 wherein the haziness is assessed by measuring absorbance of the said plurality of coatings
- 6. The method of claim 1 wherein a dye having a known extinction coefficient and concentration comprises at least one starting component of said formulations.
- 7. The method of claim 6 wherein said dye is utilized for determining the thickness of each of the said plurality of coatings.
- 8. The method of claim 1 wherein the dispensing of said starting components is performed by a robotic dispenser.
- 9. The method of claim 8 wherein said robotic dispenser is integrated with a balance.
- 10. The method of claim 1 wherein the testing for said adhesion performance of the said coatings utilizes a probe tester.
- 11. The method of claim 10 wherein the AAT is utilized as a probe tester.
- 12. A rapid method for screening materials to meet target adhesion performance, comprising:
selecting starting components; designing experimental formulations comprised of said starting components; compounding said starting components utilizing said experimental formulations in order to provide a plurality of material formulations, each of said plurality of material formulations being comprised of at least two starting components; applying samples of the plurality of material formulations to a substrate, thereby providing an array of samples of the plurality of materials; applying a leveling force onto the array of samples; utilizing a probe tester, having a probe, to test the array of samples of the plurality of materials in order to obtain test results; and evaluating the test results.
- 13. The method of claim 12 wherein the force is a centrifugal force.
- 14 The method of claim 12 wherein the array is formed by placing the formulations into a plurality of receptacles, the receptacles being formed by placing an apertured sheet upon the substrate, thereby forming a plurality of sample receiving wells.
- 15. The method of claim 12 wherein said designing step further comprises identifying candidate starting components and compounding them at starting ratios.
- 16. The method of claim 12 wherein the applying step further comprises the use of a multi-receptacle assembly comprised of the substrate and a rubber-based apertured sheet disposed thereon, forming a plurality of sample receiving wells.
- 17. The method of claim 12, wherein the testing is done with the said substrate mounted upon a platform having an X-Y motion and the probe tester moves in a Z-motion.
- 18. The method of claim 12, wherein the testing is done with the said substrate mounted upon a platform having an X-Y motion, and the probe tester moves in a Z-motion.
- 19. The method of claim 12, wherein the probe tester is able to move in an X-Y-Z motion while the said substrate, having the array of samples of the plurality of material formulations disposed thereon, remains stationary.
- 20. The method of claim 12, wherein the said substrate, having the array of samples of the plurality of material formulations disposed thereon, is able to move in an X-Y-Z motion and the probe tester remains in a fixed position.
- 21. The method of claim 12, wherein the AAT has a plurality of probes which test the samples of the plurality of material formulations in parallel, to obtain a plurality of test data from a plurality of materials having particular formulations.
- 22. The method of claim 12, wherein the AAT is utilized to perform tack tests on the array of samples.
- 23. The method of claim 12, wherein the probe is spherical.
- 24. The method of claim 23 wherein said probe is articulated.
- 25. The method of claim 21, wherein said plurality of probes are spherical.
- 26. The method of claim 25 wherein said plurality of probes are articulated.
- 27. The method of claim 12, wherein the probe is spherical and has a plurality of raised probing surfaces.
- 28. The method of claim 12, wherein the AAT is utilized to conduct loop or shear testing of the array of samples of the plurality of materials having particular formulations.
- 29. The method of claim 12 wherein the plurality of material formulations is further comprised of dye added to the formulations.
- 30. The method of claim 29 wherein said addition of dye to the material formulations is utilized to determine thickness of samples of the plurality of formulations disposed upon the substrate.
- 31. The method of claim 30 wherein photometry techniques are utilized to determine thickness of samples of the plurality of material formulations disposed upon the substrate.
- 32. The method of claim 12, 21 or 23 wherein a solvent is utilized in conjunction with a rotating cleaning device, to clean the probe between tests.
- 33. The method of claim 12, 21 or 23 wherein a blast of CO2 followed by solvent cleaning is utilized to clean the probes between tests.
- 34. The method of claim 12, wherein said plurality of materials having particular formulations are pressure sensitive adhesives.
- 35. An apparatus for characterizing a plurality of materials, comprising:
an array of a plurality of materials disposed upon a substrate; a platform upon which the substrate is positioned; a probe connected to a force transducer; coupling means for coupling said apparatus to a computer, said computer providing means for controlling said probe; automated means for displacing either the probe, the platform or both in any direction; and recording and analyzing means for recording and analyzing information provided by said probe connected to said force transducer.
- 36. The apparatus of claim 35 wherein said apparatus has a plurality of probes.
- 37. The apparatus of claim 36 wherein said plurality of probes is connected to a plurality of force transducers.
- 38. The apparatus of claim 35 wherein said automated means comprises a step motor.
- 39. The apparatus of claim 35 wherein said automated means is comprised of a plurality of step motors.
- 40. The apparatus of claim 35 wherein said probe is utilized to conduct texture analysis of a plurality of material formulations.
- 41. The apparatus of claim 40 wherein the probe has a geometric shape.
- 42. The apparatus of claim 35 or 36, wherein the probes are articulated.
- 43. The apparatus of claim 42 wherein said probe has a plurality of raised probing surfaces.
- 44. The apparatus of claim 35 wherein the array of a plurality of material formulations is disposed upon a substrate comprised of plastic.
- 45. The apparatus of claim 35 wherein the substrate is a composition suitable for use as facestock.
- 46. The apparatus of claim 35 wherein the array of a plurality of material formulations disposed upon a substrate is provided by placing the samples into a plurality of receptacles, the receptacles being formed by placing an apertured sheet upon the substrate, thereby forming a multi-layered casting assembly and plurality of receptacles.
- 47. The apparatus of claim 46 wherein said multi-layered casting assembly having sample receiving wells, having said plurality of material formulations disposed in the plurality of receptacles, is placed into a centrifuge and subjected to a centrifugal force.
- 48. The apparatus of claim 47, wherein the multi-layered casting assembly, with the plurality of material formulations disposed in the plurality of receptacles, is covered during centrifugation.
- 49. The apparatus of claim 47, wherein the centrifuge is constructed to be airtight.
- 50. The apparatus of claim 49 wherein atmospheric conditions within the centrifuge are varied by a user.
- 51. The apparatus of claim 50 wherein the atmospheric condition to be varied is selected from the group consisting of temperature, pressure, humidity and gaseous content.
- 52. The apparatus of claim 47 wherein the plurality of material formulations disposed in the plurality of receptacles are cured during centrifugation.
- 53. The apparatus of claim 52 wherein the plurality of material formulations disposed in the plurality of receptacles are cured by the application of ultraviolet or ionizing radiation, heat, or microwaves.
- 54. The apparatus of claim 35 wherein said apparatus is utilized to perform adhesive tests on the array of a plurality of material formulations disposed upon a substrate.
- 55. The apparatus of claim 35 wherein the array is comprised of rows of plurality of material formulations disposed upon a substrate, each component of the plurality having a different formulation than the other components, disposed upon the same substrate.
- 56. The apparatus of claim 35 wherein the array is comprised of a plurality of material formulations, each component of the plurality having the same formulation as the other components of the plurality, each disposed upon a differing substrate.
- 57. The apparatus of claim 35 wherein material having various or similar formulations, and make up the array, are applied onto the substrate at varying thicknesses.
- 58. The apparatus of claim 35 wherein the apparatus is placed in an environmental chamber and testing is carried out in the environmental chamber.
- 59. An apparatus for characterizing a plurality of materials, comprising:
an array of a plurality of materials disposed upon a substrate; a platform upon which the substrate is positioned; a probe connected to a force transducer, wherein the probe, the platform or both are displaceable; and the apparatus being in communication with a computer, the computer being adapted to provide instructions to the apparatus, and to record and analyze information provided by said probe.
- 60. The apparatus of claim 59 wherein motor is provided to displace at least one of the probe and the platform.
- 61. The apparatus of claim 59 wherein a plurality of motors is provided to displace at least one of the probe and the platform.
- 62. The apparatus of claim 59 wherein at least one of the probe and the platform, is provided electrically.
- 63. The apparatus of claim 59 wherein said apparatus has a plurality of probes.
- 64. The apparatus of claim 59 wherein said probe is utilized to conduct texture analysis of the plurality of materials having various formulations in the array.
- 65. The apparatus of claim 59 wherein the array of a plurality of materials disposed upon a substrate is provided by placing the samples into a plurality of receptacles, the receptacles being formed by placing an apertured sheet upon the substrate, thereby forming a multi-layered casting assembly and plurality of receptacles.
- 66. The apparatus of claim 65 wherein said multi-layered casting assembly having sample receiving wells and said plurality of material formulations disposed in the plurality of receptacles, is placed into a centrifuge and subjected to a centrifugal force.
- 67. The apparatus of claim 59 wherein the probe has a geometric shape.
- 68. The apparatus of claim 59 wherein said apparatus has a plurality of probes.
- 69. The apparatus of claim 59 or 68, wherein the probe(s) are articulated.
- 70. The apparatus of claim 59 or 68 wherein said probe(s) has a plurality of raised probing surfaces.
- 71. The apparatus of claim 65 wherein the multi-layered casting assembly, having a plurality of receiving receptacles, is flexible.
- 72. The apparatus of claim 59 wherein the probe is spherical.
- 73. The apparatus of claim 65 wherein the multi-layered casting assembly in positioned within a chamber of the centrifuge, the chamber having a variable atmosphere.
- 74. The apparatus of claim 59 wherein the apparatus is placed in an environmental chamber and testing is carried out in the environmental chamber.
RELATED APPLICATIONS
[0001] This application is a continuation-in-part of Avery Dennison Corporation's PCT Patent Application No. PCT/US00/29854, filed Oct. 30, 2000, which this application incorporates by reference. This application claims priority from U.S. Provisional Patent Application Serial No. 60/162,349, filed on Oct. 29, 1999, which this application also incorporates by reference.
Provisional Applications (1)
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Number |
Date |
Country |
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60162349 |
Oct 1999 |
US |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
PCT/US00/29854 |
Oct 2000 |
US |
Child |
10263564 |
Oct 2002 |
US |