Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Weight per unit area specified
Reexamination Certificate
2000-04-27
2001-07-24
Pyon, Harold (Department: 1772)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Weight per unit area specified
C428S537500, C428S537700
Reexamination Certificate
active
06265063
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to paperboard materials for carrying static cling vinyl products for transport to end users. Such structures of this type, generally, provide good adhesion for the static cling vinyl product, but allow the vinyl product to be peeled off easily.
2. Description of the Related Art
It is known to employ systems and assembly methods that utilize carriers for static cling. Exemplary of such prior art are U.S. Pat. No. 4,652,239 ('239) to B. J. Brimberg, entitled “Space Planning System and Method,” U.S. Pat. No. 5,102,171 ('171) to R. S. Saetre, entitled “Static Cling Greeting Card,” and U.S. Pat. No. 5,334,431 ('431) to A. G. Longtin, entitled “Piggyback Assembly of Static Cling Decal, Intermediate Layer and Adhesive Web.”
It is also known, in current carriers for static cling vinyl products, to employ a glossy extrusion coated paperboard substrate. Exemplary of such prior art is commonly assigned U.S. Pat. No. 5,643,388 ('388) to R. S. Peterson, entitled “Process of Making Paperboard Carrier for Static Cling Vinyl Products.”
It is apparent from the above that there exists a need in the art for a carrier for static cling vinyl products which is light weight through simplicity of parts and uniqueness of structure, and which at least equals the static cling characteristics of the known carriers, but which at the same time utilizes less expensive materials and processes. It is a purpose of this invention to fulfill this and other needs in the art in a manner more apparent to the skilled artisan once given the following disclosure.
SUMMARY OF THE INVENTION
Generally speaking, this invention fulfills these needs by providing a paperboard carrier for static cling vinyl products, comprising a paperboard substrate, a layer of particulate minerals located adjacent to the paperboard substrate, and a layer of styrene-butadiene-based latex located adjacent to the particulate mineral layer such that a static cling vinyl product can adhere to the latex layer.
In certain preferred embodiments, the particulate minerals include clay. Also, the latex layer must have a high butadiene content and a glass transition temperature of approximately 5° C.
In another further preferred embodiment, the paperboard carrier provides good adhesion for the static cling vinyl product, but allows the product to be easily peeled off.
The preferred carrier, according to this invention, offers the following advantages: excellent adhesion for static cling vinyl products; lightness in weight; ease of assembly; good stability; good durability; good economy; and ease of static cling vinyl product removal. In fact, in many of the preferred embodiments, these factors of excellent adhesion and ease of product removal are optimized to the extent that is considerably higher than heretofore achieved in prior, known carriers.
The above and other features of the present invention, which will become more apparent as the description proceeds, are best understood by considering the following detailed description.
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Cordatos Haralambos
Hawes David Hillis
Bowman Donald L.
McDaniel Terry B.
Pyon Harold
Schmalz Richard L.
Tsoy Elena
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