[특허]Activatable adhesive, labels, and related methods

Avery Dennison Corporation

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특허 상세정보

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Activatable adhesive, labels, and related methods

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G09F-003/10 C09J-007/02 C09J-133/10 C09J-133/02 C09J-125/14 C08K-003/00 C08K-003/04 C08K-005/00 C08K-005/10 C09J-133/08 G09F-003/02
출원번호	US-0892443 (2013-05-13)
등록번호	US-9653006 (2017-05-16)
발명자 / 주소	Kian, Kourosh Lee, Souphong Hseih, Dong-Tsai Edwards, David N. Lenkl, Johannes Bharadwaj, Rishikesh K. Mallya, Prakash Li, Kai
출원인 / 주소	Avery Dennison Corporation
대리인 / 주소	Avery Dennison Corporation
인용정보	피인용 횟수 : 0 인용 특허 : 105

초록

An activatable adhesive that is formulated to readily absorb energy from a given radiation source, an activatable adhesive label that incorporates such an activatable adhesive, a system for activating such labels, and related methods and uses are described. The activatable adhesive includes a plasticizer, a tackifier, and an adhesive base polymer that includes butyl acrylate, styrene, methyl methacrylate, methacrylic acid, and acrylic acid.

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1. A label comprising: a facestock layer; andan activatable, polymerized adhesive layer that is coupled to the facestock layer and includes: i. 20 to 35 wt % of an adhesive base polymer including butyl acrylate, styrene, methyl methacrylate, methacrylic acid, acrylic acid, at least one multifunctional monomer, and at least one chain transfer agent,ii. 50 to 75 wt % of a plasticizer, andiii. 5 to 20 wt % of a tackifier,wherein the adhesive base polymer has a weight average molecular weight within a range of from 10,000 Daltons to 150,000 Daltons. 2. The label according to claim 1, wherein: the label is configured to be exposed to a radiant energy;the radiant energy has a wavelength and an intensity that results in the adhesive layer becoming tacky after exposure to the radiant energy; andthe facestock layer is not discolored after the exposure of the label to the radiant energy. 3. The label according to claim 1, wherein the facestock layer is made of a material selected from the group consisting of a paper, a polymer film, a metallized paper, a paper backed foil, and a metal foil. 4. The label according to claim 1, wherein: the label is configured to be applied to an item; andthe label is configured to be repositioned for one minute after the label is applied to the item. 5. The label according to claim 1, wherein: the adhesive layer is activatable;the adhesive layer has a tackiness;the label is configured to be applied to an item; andafter the label is applied to the item, the adhesive layer's tackiness prevents the label from being removed from the item. 6. The label according to claim 1, wherein: the label is configured to be applied to an item; andafter the label is applied to the item, the label permanently bonds to the item after two minutes. 7. The label of claim 1 wherein the adhesive layer includes an agent for promoting energy absorption. 8. The label of claim 7 wherein the agent is selected from the group consisting of carbon black, dyes, colorants, pigments, inks, and combinations thereof. 9. The label of claim 8 wherein the agent is carbon black. 10. The label of claim 9 wherein the concentration of carbon black is at least about 0.1%. 11. The label of claim 1 wherein the adhesive base polymer has a weight average molecular weight within a range of from 15,000 Daltons to 100,000 Daltons. 12. The label of claim 1 wherein the adhesive base polymer has a weight average molecular weight within a range of from 20,000 Daltons to 40,000 Daltons. 13. The label of claim 1 wherein the adhesive layer comprises: 24-30 wt % of the adhesive base polymer;56-68 wt % of the plasticizer; and8-16 wt % of the tackifier. 14. The label of claim 1 wherein the adhesive layer comprises: about 28.6 wt % of the adhesive base polymer;about 57.1 wt % of the plasticizer; andabout 14.3 wt % of the tackifier. 15. The label of claim 1 wherein the adhesive layer comprises: about 25 wt % of the adhesive base polymer;about 66 wt % of the plasticizer; andabout 9 wt % of the tackifier. 16. The label of claim 1, wherein the adhesive base polymer comprises: from 5-50 wt % of the butyl acrylate;from 20-85 wt % of the styrene;from 1-35 wt % of the methyl methacrylate;from 0.5-5 wt % of the methacrylic acid;from 0.5-5 wt % of the acrylic acid;from greater than 0 to 5 wt % of the at least one multifunctional monomer; andfrom greater than 0 to 5 wt % of the at least one chain transfer agent. 17. The label of claim 1, wherein the adhesive base polymer comprises: from 12-48 wt % of the butyl acrylate;from 23-78 wt % of the styrene;from 3-30 wt % of the methyl methacrylate;from 1-2 wt % of the methacrylic acid;from 1-3 wt % of the acrylic acid;from 0.5-2.5 wt % of the at least one multifunctional monomer; andfrom 1.0-4.0 wt % of the at least one chain transfer agent. 18. The label of claim 1, wherein the adhesive base polymer comprises: from 9-14 wt % of the butyl acrylate;from 69-80 wt % of the styrene;from 2-6 wt % of the methyl methacrylate;from 1-2 wt % of the methacrylic acid;from 1-2 wt % of the acrylic add;from 0.5-2.5 wt % of the at least one multifunctional monomer; andfrom 1.0-4.0 wt % of the at least one chain transfer agent;wherein the at least one multifunctional monomer is ethylene glycol dimethacrylate (EGDMA); andwherein the at least one chain transfer agent is n-dodecyl mercaptan (n-DDM). 19. The label of claim 1, wherein the adhesive base polymer comprises: 12.8 wt % of the butyl acrylate;77.6 wt % of the styrene;3.2 wt % of the methyl methacrylate;1.2 wt % of the methacrylic acid;1.7 wt % of the acrylic acid;1.5 wt % of the at least one multifunctional monomer; and1.9 wt % of the at least one chain transfer agent;wherein the at least one multifunctional monomer is ethylene glycol dimethacrylate (EGDMA); andwherein the at least one chain transfer agent is n-dodecyl mercaptan (n-DDM). 20. The label of claim 1 further comprising: a reflective layer that is coupled between the facestock layer and the adhesive layer. 21. The label according to claim 20, wherein: the label is configured to be exposed to a radiant energy;the radiant energy has a wavelength and an intensity that results in the adhesive layer becoming tacky after exposure to the radiant energy; andthe facestock layer is not discolored after the exposure of the label to the radiant energy. 22. The label of claim 20, wherein: the facestock layer has a bottom surface; andthe reflective layer is made of a material that is applied as a coating to the bottom surface of the facestock layer. 23. The label of claim 22, wherein the material of the reflective layer is selected from the group consisting of gold, silver, aluminum, and copper. 24. The label of claim 20, wherein the reflective layer has a thickness of greater than one micron. 25. The label of claim 20, wherein: the reflective layer has a reflectivity value; andthe reflectivity value is greater than approximately 90 percent. 26. The label of claim 20, wherein the reflective layer underlies only a portion of the facestock layer. 27. The label of claim 20, wherein: the adhesive layer has a first surface;the reflective layer has a second surface that is adjacent to the first surface; andthe second surface is textured. 28. The label of claim 27, wherein the second surface's texture is configured to be retroreflective. 29. The label of claim 20 wherein the adhesive layer includes an agent for promoting energy absorption. 30. The label of claim 29 wherein the agent is selected from the group consisting of carbon black, dyes, colorants, pigments, inks, and combinations thereof. 31. The label of claim 30 wherein the agent is carbon black. 32. The label of claim 31 wherein the concentration of carbon black is at least about 0.02%. 33. The label of claim 1 further comprising a barrier layer. 34. The label of claim 33 wherein the barrier layer comprises at least one polymeric material having styrene moieties. 35. The label of claim 33 wherein the barrier layer protects the label from discoloration. 36. The label of claim 35 wherein the barrier layer protects the label from discoloration at a temperature of from −20° C. to 80° C. 37. The label of claim 35 wherein the barrier layer protects the label from discoloration for a time period of up to 1 year. 38. The label of claim 35 wherein the barrier layer protects the label from discoloration at a humidity level of from 10% to 99%. 39. The label of claim 33 wherein the barrier layer includes an agent for promoting energy absorption. 40. The label of claim 39 wherein the agent is selected from the group consisting of carbon black, dyes, colorants, pigments, inks, and combinations thereof. 41. The label of claim 40 wherein the agent is carbon black. 42. The label of claim 41 wherein the concentration of carbon black is about 0.1% by weight. 43. The label of claim 1 further comprising a primer layer. 44. The label of claim 43 wherein the primer layer includes an agent for promoting energy absorption. 45. The label of claim 44 wherein the agent is selected from the group consisting of carbon black, dyes, colorants, pigments, inks, and combinations thereof. 46. The label of claim 45 wherein the agent is carbon black. 47. The label of claim 46 wherein the concentration of carbon black is at least about 0.1%. 48. A label comprising: a facestock layer defining an outer face and an oppositely directed inner face; an activatable, polymerized adhesive layer underlying the inner face, the activatable, polymerized adhesive includingi. 20 to 35 wt % of an adhesive base polymer including butyl acrylate, styrene, methyl methacrylate, methacrylic acid, acrylic acid, at least one multifunctional monomer, and at least one chain transfer agent;ii. 50 to 75 wt % of a plasticizer; andiii. 5 to 20 wt % of a tackifier,wherein the adhesive base polymer has a weight average molecular weight within a range of from 10,000 Daltons to 150,000 Daltons, wherein the adhesive exhibits an activation time of less than 1 second, exhibits an open time of at least 30 seconds and exhibits an initial tack to a substrate of at least 1.0 Newton. 49. The label of claim 48 wherein the adhesive is activated by exposure to electromagnetic radiation having a wavelength of from 0.1 micrometers to 10 micrometers. 50. The label of claim 49 wherein the intensity of the electromagnetic radiation is from about 100 kW/m2 to about 800 kW/m2. 51. The label of claim 49 wherein the adhesive is non-blocking before activation. 52. The label of claim 51 wherein the adhesive is non-blocking at a temperature of about 45° C. 53. The label of claim 51 wherein the adhesive is non-blocking at a pressure of from 15 psi to 30 psi. 54. The label of claim 51 wherein the adhesive is non-blocking at a relative humidity level from 10% to 99%. 55. The label of claim 48 further comprising: a barrier layer disposed between the facestock layer and the adhesive layer. 56. The label of claim 55 wherein the barrier layer comprises at least one polymeric material having styrene moieties. 57. The label of claim 55 wherein the barrier layer protects the label from discoloration. 58. The label of claim 57 wherein the barrier layer protects the label from discoloration at a temperature of from −20° C. to 80° C. 59. The label of claim 57 wherein the barrier layer protects the label from discoloration for a time period of up to 1 year. 60. The label of claim 57 wherein the barrier layer protects the label from discoloration at a humidity level of from 10% to 99%. 61. Use of the label of claim 1 in a printer. 62. Use of the label of claim 20 in a printer. 63. Use of the label of claim 48 in a printer.

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