UU-F-1206C
3.1.2.5.2 Recovered Materials Content (see 6.3.2). The kraft offered shall include a minimum of 25% of recovered materials.
3.1.2.5.3 Recovered Materials Content (see 6.3.2). The manila offered shall include a minimum of 20% of recovered materials.
3.1.3 Gusset Material. Folders fabricated from Grade A paperboard shall have the front and back leaves joined by a gusset material (see 6.2). The color of the gusset shall be complimentary to the paperboard color, and shall compare favorably in color, hue, and intensity to gusset material use in commercial production for similar file folders. The gusset shall be two-ply with the end (on the width) joined on the inside so that there is at least a { inch overlap. The gusset shall provide for an expansion of one inch, with one fold inward and parallel to the leaves or 2 inches as required, with 3 inward folds at ½ inch intervals and parallel to the leaves. The gusset material shall be glued on each side of the leaves over a width not less than ½ and not more than one inch. The gusset shall be firmly glued to the folder so that its removal results in paperboard failure and not the adhesive bond failure. The gusset material shall be made in accordance with 3.1.3.1 or 3.1.3.2, at the supplier’s option.
3.1.2.1 Cloth Gusset. The cloth gusset shall be well sized and filled so that the fold does not lose shape or flatten out when the folder is used. The cloth shall have a thread count of not less than 60 threads in the warp and not less than 50 threads in the filling when tested in accordance with Table III. The cloth gusset (two plies of cloth) shall have an Elmendorf tearing strength of not less than 900 grams in the long direction (when the folder is held in the closed position), when tested as specified in 4.4.2.1.1.
3.1.3.2 Spunbonded Polyolefin Gusset. File folder gusset shall be made from two plies of spunbonded polyolefin material which shall not lose its shape or flatten out in use. The spunbonded polyolefin gusset shall have an Elmendorf tearing strength of not less than 400 grams in the long direction (when the file folder is held in the closed positions) when tested in accordance with 4.4.2.2.1. The spunbonded polyolefin shall have a fold endurance of not less than 5,000 folds when tested in accordance with
4.4.2.2.2.
3.2 Construction.
3.2.1 Type I Folders. Type I folders shall be fabricated from grade C board (see table I). The folders shall be formed by folding the board to form a front and back leaf. Type I folders shall be drawer or shelf, as specified (see 6.2). The dimensions on the front and back leaf shall be as specified for the applicable size (see 3.3). The front leaf shall be scored % inch expansion at 3/8 or { inch intervals across the bottom width of the folder. Unless otherwise specified, Type I folders with straight-cut tabs shall be scored on the tab using two single lines to show the position of 1/3 cut tabs. Type I folders shall be furnished with (class 1) or without (class 2) fasteners as specified (see 3.5 and 6.2). All top corners of the folder shall be rounded and, for shelf folders, the bottom of the tab portion of the back leaf shall be rounded (rounded corners may include “s” curves).
3.2.1.1 Double Top Tab (if required see 6.2). The back leaf of the folder shall be reinforced along the top of side tab edge, as applicable, for the specified drawer or shelf folder. The reinforcing material shall be
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