Method of making laminated thermal transfer printable labels

• US 5,738,748 A
• Filed: 08/05/1996
• Issued: 04/14/1998
• Est. Priority Date: 05/13/1994
• Status: Expired due to Fees

• Current Assignee: Wisconsin Label Corporation (Multi-Color Corporation)
• Original Assignee: Media Solutions, Inc.
• Inventors: Mitchell, Chauncey T. Jr.
• Primary Examiner(s): MAYES, MELVIN C
• Application Number:
  US08/692,203
• Time in Patent Office: 617 Days
• Field of Search: 156/184, 156/191, 156/192, 156/247, 156/278, 156/289, 156/290, 156/291, 156/268, 156/270, 156/324, 156/344, 156/277, 156/253, 428/40.1, 428/41.8, 428/41.9, 428/42.1, 428/42.3, 428/43, 428/198, 428/343, 428/354
• US Class Current: 156/253
• CPC Class Codes: B31D 1/027 involving, marking, printing or coding
• CPC Class Codes: B41M 5/38207 characterised by aspects not provided for in groups B41M5/385 - B41M5/395
• CPC Class Codes: B41M 5/42 Intermediate, backcoat, or covering layers B41M5/405 takes precedence; multilayer thermal transfer systems in general B41M5/38214
• CPC Class Codes: G09F 3/02 Forms or constructions layered products B32B
• CPC Class Codes: G09F 3/10 by an adhesive layer
• CPC Class Codes: Y10S 428/906 Roll or coil
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 156/1057 Subsequent to assembly of laminae
• CPC Class Codes: Y10T 156/1085 One web only
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/1481 Dissimilar adhesives
• CPC Class Codes: Y10T 428/1486 Ornamental, decorative, pattern, or indicia
• CPC Class Codes: Y10T 428/1495 Adhesive is on removable layer
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 428/24826 Spot bonds connect components
• CPC Class Codes: Y10T 428/2486 with outer strippable or release layer
• CPC Class Codes: Y10T 428/24901 including coloring matter
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree

Abstract

A label stock includes a thermal transfer facestock and a thermal transfer ribbon that are laminated together. The face stock has a front face for receiving thermal transfer ink and a back face covered by an adhesive. The ribbon has a front face covered by thermal transfer ink and a back face covered by a release. The facestock and ribbon are laminated and wound together into a roll so that the ribbon also functions as a conventional release liner.

Claims

1. A method of making labels comprising the steps of:

applying a linerless adhesive to a back face of a thermal transfer facestock;

applying a release coating to a back face of a thermal transfer ribbon;

laminating said facestock and said ribbon together; and

winding said laminated facestock and ribbon into a roll so that the release coating on the ribbon confronts the linerless adhesive on the back face of the thermal transfer facestock.

2. The method of claim 1 including the further step of dividing the facestock into individual labels.

3. The method of claim 2 in which said step of dividing separates the individual labels by a series of perforations.

4. The method of claim 2 in which said step of dividing includes cutting the facestock against the ribbon.

5. The method of claim 4 in which said step of dividing cuts the facestock into individual labels that are carried by the ribbon.

6. The method of claim 5 in which said step of dividing includes butt cutting the facestock.

7. The method of claim 1 in which said step of laminating includes laminating a front face of the facestock against a front face of the ribbon.

8. The method of claim 7 including the further step of binding the facestock and the ribbon together.

9. The method of claim 8 in which said step of binding includes applying a fugitive adhesive between the front face of the facestock and the front face of the ribbon prior to said step of laminating.

10. The method of claim 9 including the further step of dividing the facestock into individual labels and in which the fugitive adhesive is applied in a pattern that adheres the individual labels to the ribbon.

11. The method of claim 10 in which the fugitive adhesive is applied in strips along edges of the ribbon.

12. The method of claim 1 including the further step of unwinding the roll of laminated web and ribbon into a printer.

13. The method of claim 12 including the further step of applying a controlled pattern of heat to the back face of the thermal transfer ribbon for transferring printed images onto a front face of the facestock.

14. The method of claim 13 including a further step of printing onto one of the front and back faces of the facestock before said step of unwinding the roll.

15. The method of claim 14 in which said further step of printing is performed with a press.

16. The method of claim 1 in which said laminating step includes laminating the back face of the facestock against the back face of the ribbon.

17. The method of claim 16 including the further steps of separating the laminated back faces of the facestock and ribbon and relaminating a front face of the facestock against a front face of the ribbon.

18. The method of claim 17 in which said further steps of separating and relaminating take place after said winding step.

19. The method of claim 18 including the further step of thermal transfer printing onto the front face of the facestock by applying heat to the ribbon following said further steps of separating and relaminating.

20. The method of claim 19 including the further step of dividing the facestock into individual labels.

21. The method of claim 20 in which said step of dividing separates individual labels by a series of perforations.

22. The method of claim 1 including the further step of applying a fugitive adhesive between a front face of the facestock and a front face of the ribbon.

23. The method of claim 22 in which the fugitive adhesive is applied in a pattern.

24. The method of claim 23 in which the fugitive adhesive is applied in strips along edges of the ribbon.

25. The method of claim 24 in which gaps are formed in the strips to release air between the facestock and the ribbon.

26. A method of making a self-adhesive, thermal transfer printed label, the method comprising:

a. applying a linerless adhesive layer to a back face of a length of label stock having a front face receptive to thermal transfer ink;

b. applying a release layer to a back face of a length of thermal transfer ink ribbon having a front face coated with an unimaged layer of thermal transfer ink;

c. winding the label stock and ribbon together in a roll so that the release layer on the back face of the ribbon confronts the adhesive on the back face of the label stock; and

d. unwinding the label stock and ribbon so that the front face of the ribbon stock contacts the front face of the label stock in a printer that thermally prints the label with ink imaged from the ribbon.

27. The method of claim 26 including laminating the front face of the ribbon against the front face of the label stock.

28. The method of claim 27 including using a fugitive adhesive disposed between the front faces of the ribbon and label stock.

29. The method of claim 28 including applying the fugitive adhesive in strips to edges of the front face of the ribbon.

30. The method of claim 29 including forming gaps in the strips of fugitive adhesive to release air from between the label stock and ribbon.

31. The method of claim 26 including dividing the label stock into individual labels.

32. The method of claim 31 including tacking the label stock and ribbon together with a binder.

33. The method of claim 32 including using a fugitive adhesive disposed between the front faces of the label stock and the ribbon to serve as the binder for attaching individual labels to the ribbon.

34. The method of claim 33 including forming a stronger bond with the fugitive adhesive between the front faces of the label stock and ribbon than is produced between the adhesive and release layer of the back faces.

35. The method of claim 31 including using for the ribbon a film that resists splitting apart upon partial penetration of a cutting tool.

36. The method of claim 26 including laminating the back face of the label stock against the back face of the ribbon.

37. The method of claim 36 including dividing the label stock into individual labels by a series of perforations.

38. The method of claim 26 including forming the thermal transfer ink of a material that melts from the ribbon upon application of heat to the back face of the ribbon.

39. The method of claim 38 including applying a non-thermal ink to a face of the label stock.

40. The method of claim 26 including forming the label stock into a series of self-adhesive labels.

41. A method of making a self-adhesive label printable by thermal transfer ink, the method comprising:

a. preparing a label stock having a pressure-sensitive adhesive layer on a back face unprotected by any release liner;

b. winding the label stock into a roll with a thermal transfer ink ribbon having a release coating on a rear face that confronts the adhesive layer; and

c. unwinding the label stock and ribbon so that the front face of the label stock contacts the front face of the ribbon within a printer where ink from the front face of the ribbon is transferred to image the label stock.

42. The method of claim 41 including laminating the label stock and ribbon together with the ink confronting the front face of the label stock.

43. The method of claim 42 including using a fugitive adhesive for bonding the ribbon and label stock together.

44. The method of claim 41 including laminating the label stock and ribbon together with the adhesive layer confronting the release coating.

45. The method of claim 41 including dividing the label stock into separable labels.

46. The method of claim 41 including forming the label stock into a series of self-adhesive labels.