Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Reexamination Certificate
2000-02-10
2002-03-19
Hampton-Hightower, P. (Department: 1711)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
C428S141000, C428S156000, C428S161000, C428S172000, C428S339000, C428S040100, C428S353000, C428S354000, C283S081000
Reexamination Certificate
active
06358605
ABSTRACT:
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to labels for use on rubber products. In one aspect, the invention relates to labels comprising a polyester film while in another aspect, the invention relates to a label comprising a polyester film in combination with a primer for promoting adhesion of the label to a rubber substrate. In yet another aspect, the invention relates to methods of making and using such labels.
U.S. Pat. No. 5,709,918 to Kimijima and Sakashita, the disclosure of which is incorporated herein by reference, teaches an information-indicating label for use in the production of tires. The label consists essentially of a single layer polyester film substrate, e.g., polyethylene terephthalate (PET), in combination with a pressure sensitive adhesive, e.g., any of the natural or synthetic rubber-based adhesives. To promote the adhesive strength between the substrate and the pressure sensitive adhesive, a primer layer is included between the substrate and adhesive. Examples of appropriate primer layers include resorcinol-formaldehyde resin or resorcinol-formaldehyde latex resin.
While these labels are generally effective for their intended use, a demand remains for labels of this general construction but with an improved adhesiveness to rubber substrates, particularly green rubber such as tires prior to vulcanization.
SUMMARY OF THE INVENTION
According to this invention, a label comprising (i) a first primer layer of resorcinol-formaldehyde one side of which is in intimate contact with (ii) a film substrate, and the other side of which is in intimate contact with (iii) a pressure sensitive adhesive is improved by inserting between the film substrate and the primer layer (iv) a second primer layer comprising, in one embodiment, a condensation product of chlorophenol, resorcinol and a methylene donor, e.g., formaldehyde. The addition of this second primer layer significantly increases the peel adhesion of the label to a rubber substrate, particularly a green rubber substrate, e.g., a tire prior to vulcanization, at both ambient and elevated temperatures.
REFERENCES:
patent: 4098935 (1978-07-01), Knudsen
patent: 4252589 (1981-02-01), Hayakawa et al.
patent: 4256159 (1981-03-01), Williams
patent: 5160383 (1992-11-01), Gartland et al.
patent: 5286783 (1994-02-01), Hisaki et al.
patent: 5358772 (1994-10-01), Nakagawa et al.
patent: 5371153 (1994-12-01), Kuribayashi et al.
patent: 5408007 (1995-04-01), Mizuno et al.
patent: 5527407 (1996-06-01), Gartland et al.
patent: 5565507 (1996-10-01), Marco et al.
patent: 5571352 (1996-11-01), Disselbeck
patent: 5700623 (1997-12-01), Anderson et al.
patent: 5709918 (1998-01-01), Kimijima et al.
patent: 5863987 (1999-01-01), Nakamura et al.
patent: 5891567 (1999-04-01), Kim et al.
patent: 5891938 (1999-04-01), Williams
patent: 3347400 (1985-07-01), None
patent: 2018718 (1979-10-01), None
patent: 52040100 (1977-03-01), None
patent: 78029595 (1978-08-01), None
patent: 57054979 (1982-04-01), None
patent: 60187539 (1985-09-01), None
patent: 61027711 (1986-02-01), None
patent: 62016111 (1987-01-01), None
patent: 5096914 (1993-04-01), None
patent: 5290199 (1993-11-01), None
patent: 6028530 (1994-02-01), None
patent: 6312604 (1994-11-01), None
patent: 7266811 (1995-10-01), None
patent: 7306642 (1995-11-01), None
patent: 9068924 (1997-03-01), None
patent: 10143073 (1998-05-01), None
patent: 10187044 (1998-07-01), None
patent: 10222069 (1998-08-01), None
Brady Worldwide Inc.
Hampton-Hightower P.
Whyte Hirschboeck Dudek SC
LandOfFree
Label for use on rubber products does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Label for use on rubber products, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Label for use on rubber products will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2889303