Alkaline Paper Advocate

Volume 08, Number 2
Jun 1995


Paige Company Introduces Archival Boxes

The Paige Company (Parker Plaza, 400 Kelby St., Fort Lee, NJ 07024, 800/957-2443, fax 201/461-2677) is known for furnishing ingeniously designed, sturdy assemble-it-yourself boxes for storage of documents. Until now, Paige boxes have always been non-archival, that is, without a calcium carbonate buffer to keep the pH from falling over time. Now, however, they are making boxes that conform to the specifications of the National Archives: lignin-free, pH 8-10, 3% calcium carbonate filler, with a mold inhibitor and no residual sulphur.

These new boxes sell for about a dollar more than the old ones. There are three kinds: the "Archival Storage Box," for file materials, and "Archival Document Boxes" (the narrow kind usually found in archives), for both letter-size and legal documents. The old boxes are still sold. [From the May 1995 Abbey Newsletter, p. 35] (3.6)

Recyclable Pressure-Sensitive Adhesives Developed

Two companies have patented aqueous pressure-sensitive adhesives that are said to be repulpable. The first, developed by Nippon Carbide Kogyo, completely dissolves in alkaline solution and is easily removed in recycling operations. The second, developed by Dow Chemical, is water-insoluble when dried, but is nevertheless repulpable. It consists of a combination of alkali-dispersible and nonalkali-dispersable adhesives. [From Progress in Paper Recycling, May 1995, p. 75.] (3.73)

MTI will Build Two PCC Plants in Brazil

Whenever a paper mill contracts to have a precipitated calcium carbonate (PCC) plant built, this means that it plans to make a lot of alkaline paper in the future, if it is not doing so already. So when Minerals Technologies (MTI) announces that it will build a new plant or two, this means that the supply of alkaline paper is due to get more plentiful.

In May, MTI announced that it would build two plants for a single Brazilian paper company, whose name cannot be revealed until later this year. The plants should be in operation by the fourth quarter of 1995. This will be good news for Brazilian conservators and preservation librarians and a lot of other people who need to use alkaline paper in their work, but who cannot find a domestic source.

The plants will be built, owned and operated by Specialty Minerals do Brasil, a wholly owned subsidiary of MTI. Minerals Technologies has been building PCC satellite plants for nine years, and now has 37 in operation around the world. (3A9.4)

Mills Identify New Paper Qualities on Packaging

International Paper's Riverdale Mill Starts up New Deinking, PCC & Papermaking Facilities

IP's Riverdale Mill in Selma, Alabama, has had a thorough makeover and expansion, at a cost of $325 million. Its new paper machine, Riverdale 16, is the largest uncoated freesheet machine in the world (wire width 392"), able to produce 1,090 tpd. It started up in May, using recycled fiber from a new 400-tpd proprietary deinking plant, and PCC from the world's largest onsite plant, installed by Specialty Minerals. Other improvements include a new power plant, an upgraded environmental treatment system, an expanded warehouse, and additional sheeting and packaging equipment.

All the Springhill and Hammermill grades are made at this plant. This includes six Springhill and 18 Hammermill grades that will be listed in the forthcoming 1995 North American Permanent Papers booklet, distributed by Abbey Publications. (3A9.9)

Thorold Quits Making Printing and Writing Papers

Thorold Specialty Papers (Thorold, Ontario), formerly Noranda Forest Recycled Papers, no longer makes alkaline printing and writing papers. It now makes wallpaper and flexible packaging. (3A9.9)

Breeding Trees with Easily Removable Lignin

A company called Zeneca Ltd. has developed a method for modifying the lignin in the growing tree, to make it easier to pulp their wood, using less energy and bleaching. It has contracted with Nippon Paper Industries Co. and Shell Research Ltd. to provide a gene that supresses the cinnamyl alcohol dehydrogenase (CAD) enzyme in the plant. Nippon and Shell already are able to insert the gene into select lines of high performing trees. (3B1.7)

G-P's Port Hudson Mill has its New PCC Plant Expanded

Minerals Technologies has expanded production capacity of the PCC plant at Georgia-Pacific's mill in Port Hudson, Louisiana. The plant started up only a year and a half ago, when the mill converted from acid to alkaline, and the expansion was complete by June 30, 1995. It will give the mill about 30,000 additional tons of PCC a year.

PCC (precipitated calcium carbonate) is a specialty pigment for filling and coating high-quality paper. By substituting PCC for more expensive wood fiber and other filler pigments, mills can produce paper at lower cost. (3B3.44)

Patriot Paper Starts New Life as a Corrugated Medium Mill

Patriot Paper Corp. was producing recycled printing and writing paper until it had to file for bankruptcy in 1993. From September 4, 1990 to the time it shut down, it made alkaline paper. Its location in the "urban forest" of Boston was an advantage, but the mill was 200 years old and had problems with its state-of-the-art wastepaper sorting and deinking system. This past spring it was purchased out of bankruptcy by a Chicago-based investment group, and in April it was slated to start up again making corrugated medium, the fluted inner ply in corrugated board. Bay State Paper Co. will operate it. (3B3.7)

ISO Certifications for Printing and Writing Mills

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