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 North America's #1 Resource for Paper Grade and Company InformationThursday, March 28, 2024  
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Japan art paper
Used for artist's proofs or engravings. Irregularly mottled paper imitating imperial vellum. Such papers are long-fibered and strong. Basic size: 25" x 38". Basis weight: 50 to 150 lbs.
Jaw Folder
On a web press, the web of paper passes through three cylinders to make one or two parallel folds at right angle to the direction of the web. In the process, the lead edge of the web catches on to pins that carry it around, tucker blades force the forming signature into the folding jaws on the second cylinder. There, a cut-off knife separates the fold of the signature from the web. Then the signature is carried around and released by the jaws as the cycle continues. In like manner, the signature can be passed on to the third cylinder to make a second parallel fold.
jet deckle
The edge on a web of paper formed by a stream of water or air in the papermaking process.
job lot
Paper that for one reason or another is unsuitable for the customer's desired end-use. Also quantities of overruns, defective or off-standard paper that is still usable.
jog
In paper handling, the process of evenly stacking sheets of paper directly on top of one another, either by hand or mechanically.
Jordan
A name given to a refiner in which the pulp is macerated to improve its performance. (See refiner).
jumbo roll
Rolls measuring over 24" in diameter and weighing more than 500 lbs.
junior carton
A package of reamed sealed, cut-size paper packed 8 to 10 reams per carton.
justify
In printing, fitting a line of type to both margins.
jute
Strong, long-fibered pulp made from hemp, used in combination with kraft pulps for the manufacture of jute tag.
jute board
Made on cylinder machines with both outer plies made from kraft or kraft waste. The inner ply is usually made from mixed waste papers. It contains no jute fiber.
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