Stock material or miscellaneous articles – Layer or component removable to expose adhesive
Reexamination Certificate
1998-06-22
2001-01-23
Ahmad, Nasser (Department: 1772)
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
C156S268000, C156S269000, C156S271000, C156S277000, C428S041300, C428S041700, C428S041800, C428S042200, C428S042300, C428S906000, C428S914000
Reexamination Certificate
active
06177163
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention is in the field of adhesive sheets in roll form and processes for making them.
2. Description of Related Art
Label assemblies in which a release agent coated carrier sheet has a plurality of pressure sensitive adhesive coated labels adhered to it are known. Such label assemblies are available in sheet or roll form with, or without, a blank facing capable of receiving markings. Such label assemblies are often used to mark folders, address envelopes, label containers, label file cabinets, label shelves and so forth. Typically, such labels are made of paper and are removed from the carrier sheet by bending the carrier sheet and “picking” at the label.
Those known label assemblies are often unsatisfactory for use in an industrial setting. Paper is adversely affected by solvents, oils and humidity, resulting in staining and curling, is easily torn and damaged and often has insufficient conformability to nonflat surfaces. The adhesive used is generally either ineffective to hold the label on a nonsmooth or contaminated surface, or leaves an adhesive residue on the surface after it is removed, which interferes with use as a temporary or repositionable label.
Although paper labels coated within a low-tack repositionable pressure-sensitive adhesive have been a phenomenal success in the office setting in which the note is typically applied to a paper surface, the inventors have found that such notes perform poorly on substrates which have an irregular surface and/or have a surface with low surface energy or contamination which reduces the effectiveness of the adhesive. Such surfaces are prevalent in industrial settings, research and development laboratories, the construction industry, warehouses, and other settings which require the ability to post temporary notes on non-paper surfaces.
Such settings also require that the labels be dispensed in a manner that facilitates removal from carrier and application to the substrate. Workers and technicians often are required to wear gloves, they often are in situations in which they have only one hand available for removing and applying the note and they are often pressed for time. The typical assemblies used to dispense self-adhesive labels are not satisfactory for meeting these end use requirements.
SUMMARY OF THE INVENTION
The problem of providing robust markable removable printable adhesive sheets in a form that can be easily applied in an industrial environment is solved by the present invention.
One aspect of this invention are adhesive sheet assemblies comprising:
a continuous carrier of flexible sheet material in roll form, the carrier having two substantially parallel side edges extending in a longitudinal direction of the carrier;
a series of longitudinally spaced adhesive sheets on the carrier, each adhesive sheet having a front side facing away from the carrier capable of receiving markings, a back side facing toward the carrier substantially covered with a pressure sensitive adhesive, the back side having a first portion and a second portion;
at least one cut in the carrier defining, for each adhesive sheet, one cover piece cut from the web such that the cover piece has an outer peripheral edge within the first portion on the backside of the adhesive sheet, so that the cover piece may be separated from the web and retained on the first portion of the backside of the adhesive sheet when the adhesive sheet is peeled off the carrier due to adhesion between the cover piece and the adhesive sheet.
Another aspect of this invention is a process for making the adhesive sheet assemblies of the present invention comprising:
A. Adhering a continuous carrier having two substantially parallel side edges extending in a longitudinal direction to the back side of a continuous flexible polymer film, polymer-reinforced sheet or cloth having a Taber stiffness of not less than 0.03 measured according to ASTM D747 A and having two substantially parallel side edges extending in a longitudinal direction, a front side facing away from the carrier capable of receiving markings, a back side facing toward the carrier substantially covered with a pressure sensitive adhesive such that the carrier substantially covers the pressure-sensitive adhesive to form a continuous web having a front side capable of receiving markings, a continuous carrier on the back side, and two substantially parallel side edges extending in a longitudinal direction of the web;
B. Scoring the front side of the web to serially cut out spaced apart adhesive sheets adhered to the carrier; and
C. Scoring the back side of the web to cut out a cover piece from the web having an outer peripheral edge which has at least 40, preferably at least 50, more preferably at least 60, percent of its total length in registration with the scoring of step B.
These and other aspects of the invention are described in greater detail below.
REFERENCES:
patent: 1965289 (1934-07-01), Humphner
patent: 2278673 (1942-04-01), Savada et al.
patent: 3885070 (1975-05-01), Chapman
patent: 4032679 (1977-06-01), Aoyagi
patent: 4055249 (1977-10-01), Kojima
patent: 4060168 (1977-11-01), Romagnoli
patent: 4188250 (1980-02-01), Grass
patent: 4317852 (1982-03-01), Ogden
patent: 4584219 (1986-04-01), Baartmans
patent: 4968540 (1990-11-01), Linsenbigler
patent: 5182152 (1993-01-01), Ericson
patent: 5220858 (1993-06-01), Allen et al.
patent: 5225260 (1993-07-01), McNaul et al.
patent: 5262216 (1993-11-01), Popat et al.
patent: 5279875 (1994-01-01), Juszak et al.
patent: 5484168 (1996-01-01), Chigot
patent: 5512343 (1996-04-01), Shaw
patent: 5601313 (1997-02-01), Konkol et al.
patent: 5686159 (1997-11-01), Langan
patent: 5704648 (1998-01-01), Brown et al.
patent: 5827591 (1998-10-01), Blok et al.
patent: 5882753 (1999-03-01), Pedginski et al.
patent: 5935670 (1999-08-01), Downs
patent: 0 431 825 A2 (1991-06-01), None
Blok Lana M.
Wenzler Larry E.
Wright Gene A.
Ahmad Nasser
Jessen Derek
Tricor Direct, Inc.
Whyte Hirschboeck Dudek SC
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