Chemical watermarking paper

The Customark Corporation remains the sole patent holder for chemical watermarking of paper, though it licenses the use of the technology to other mills. Since the development of the procedure, it has been used exclusively for the watermarking of stationery letter stock and envelopes.

Chemical watermarking paper

Experimentation with various conservation treatment steps on these materials gave conflicting results.

Chemical watermarking paper

Erasers seemed not to affect the watermark. Organic chemicals quickly altered the chemical watermark visually, yet under ultraviolet examination the mark appeared unaltered.

Conversely, exposure to other solutions left the watermark visually undisturbed yet indistinct under ultraviolet illumination. The Customark Corporation remains the sole patent holder for chemical watermarking of paper, though it licenses the use of the technology to other mills.

Since the development of the procedure, it has been used exclusively for the watermarking of stationery letter stock and envelopes. Inapproximately 6. Paper conservators in the near future should expect to routinely treat papers with chemical watermarks in archival collections and perhaps in modern art pieces.

Strictly speaking, a watermark is a design. Smaller secondary names, words, and dates in the corners or opposite the main design are more accurately referred to as countermarks. The first watermarked Western paper dates from the 13th century.

Chemical watermarking paper

Watermarks have not traditionally occurred in Eastern papers, although more contemporary examples exist. Watermarking originally might have been intended as an esthetic enhancement, a mark of quality, or a proprietary mark for the papermaker or the wealthy donor or client.

Similar types of information, such as a particular brand of paper, manufacture from a specific mill, or depiction of a logo for a business or organization, are conveyed in watermarks today.

Watermarks also relay historic information that can help date or geographically place a paper, thus validating a manuscript, document, or piece of art.

The history and development of watermarks has been extensively researched. See the bibliography for a brief listing of publications on the history, manufacture, and design of traditional watermarks.

Watermark designs are created by sewing metal wires or soldering metal stencils onto a wire screen. In making paper by hand, the wire, known as a mold, is dipped into the wet pulp slurry is in a tub known as a vat.

When the mold is removed from the vat, the excess water drains by gravity from the slurry. The fibers are distributed over the mold surface and deposited between the raised wires. In making paper by machine, the stock is run over or under the dandy roll, a wire cylinder to which the design is attached and which displaces the wet fibers in the area of design.

Designs may also be impressed by localized pressure between metal or rubber rollers or dies. However the mark is produced, the result is an area in the paper that is less dense and thus more translucent when held in front of a light source.

See Further Reading for additional explanations of the variations and nuances of traditional watermarking.

CHEMICAL WATERMARKING OF PAPER

The high cost, inconvenience, and difficulty of producing intricate designs in conventionally manufactured wire or chiaroscuro 1 watermarks were the impetus behind the invention of a simulated watermark in the commercial papermaking industry.

The process of chemically watermarking paper allows for a greater diversity of applications at significantly lower cost. With the Customark chemical watermark process, unmarked paper can be made in advance and stored.

When an order is received, the watermark design is produced by stamping the pre-made papers and impregnating them with the patented compound under heat and pressure.

While the manufacturer considers the resulting mark to be relatively inert Yankoski ca.A paper article with a chemical watermark which includes, in combination, a paper sheet, a chemical watermark composition applied on said sheet in the configuration of a selected design, the chemical watermarking composition consisting essentially of a hardened, synthetic, thermosetting resin having an index of refraction of about to about.

Find everything you need to know about watermarked papers. Discover Neenah Paper products that have watermarks that provide security and authenticity.

A watermark is an identifying image or pattern in paper that appears as various shades of lightness/darkness when viewed by transmitted light (or when viewed by reflected light, atop a dark background), caused by thickness or density variations in the paper.

Prior art keywords ester design paper process weight Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. We use a chemical process that allows the design to be seen on and through the paper, achieving very similar results to that of a ‘true’ watermark. Watermarking is an increasingly popular option for many clients and offers a range of benefits, from adding an extra aesthetic quality to your branding, to providing an important security 5/5(5).

The Customark Corporation remains the sole patent holder for chemical watermarking of paper, though it licenses the use of the technology to other mills. Since the development of the procedure, it has been used exclusively for the watermarking of stationery letter stock and envelopes.

What IS a WaterMark? | Chicago WaterMark Company