Japanese Paper Bib Tengujo 12g · 48×75 cm

Bib Tengujo Japanese Paper 12 gsm · ART. 240 · 48 × 75 cm

Why choose Bib Tengujo 12g?

• pH 7.1 (manufacturer-declared) — the only one in the Tengujo range declared above 7.0. The other six basis weights are declared between 6.7 and 7.0 (the 22g Kinugawa, at 7.0). If the intervention criterion is not to add acidity to the assembly, this is the highest value declared in the range.
• No declared alkaline reserve — the manufacturer does not declare added carbonate, and the declared pH (7.1) is consistent with an untamponed paper.
• Body for a moving point — 12 gsm of abaca gives a hinge strip enough body to accompany the movement of a fold with moderate stress, without the mass that would cause the reinforcement to dominate the original sheet.
• Abaca fiber — 3–6 mm leaf fiber obtained by chemical pulp. This is the fiber family of the 6, 9, 12, and 18g basis weights in the range; the 22, 29, and 43g are kozo, a different fiber with different properties.
• What you get — a translucent sheet: when applied to the artwork, it allows the lines and colors underneath to be read, and the reinforcement appears as a veil, not a patch. It has more body than a 6 or 9g sheet — it can be handled dry without folding in on itself when lifted — and when torn wet, it leaves a frayed edge of loose fibers, which is what blends the splice with the original instead of creating a sharp edge.
• Sheet of 48 × 75 cm (0.36 m²) — the 75 cm length allows a full hinge for a large folio or folded map to be cut in a single strip, without splices on the working axis.

Uses and Applications

• Reinforcement of folds and hinges of graphic works with moderate mechanical stress.
• Consolidation of creases in prints, maps, engravings, and drawings on paper.
• Bookbinding: inner hinges and endpaper reinforcements in items for occasional consultation.
• Conservation-restoration teaching and Fine Arts degrees: manageable basis weight for wet tearing practices and strip reinforcement application.

Technical Specifications

• Manufacturer Reference: CTS ART. 240 Bib Tengujo
• Basis Weight: 12 gsm
• Composition declared by manufacturer: 100% abaca (Manila hemp, Musa textilis)
• Fiber family: abaca — leaf fiber, 3–6 mm length, obtained by chemical pulp
• pH: 7.1 (declared by manufacturer)
• Alkaline reserve: not declared by manufacturer
• Sheet size: 480 × 750 mm (48 × 75 cm)
• Surface area per sheet: 0.36 m²

When to choose 12g and when another paper in the range?

The CTS Tengujo range is not a thickness scale: they are two distinct fiber families. The 6, 9, 12, and 18g basis weights are abaca: 3–6 mm leaf fiber, chemical pulp. The 22, 29, and 43g are kozo (Broussonetia papyrifera): 6–20 mm bast fiber, alkaline cooking. For the same basis weight, kozo withstands tearing much better. The real jump is between 18g and 22g, not in weight: here the material changes, and so does the price.

• Choose 12g (ART. 240) if you are going to reinforce folds or hinges with moderate mechanical stress, or if the intervention criterion is not to add acidity: it has the highest declared pH in the range (7.1).
• Go down to 9g Tengujo Kashmir (ART. 502) if the job is to repair fine tears or seal small losses, where minimal presence on the artwork is desired. Declared pH 6.7.
• Go down to 6g (ART. 561) if you need to veil or fully laminate a fragile document or brittle paper. Declared pH 6.7.
• Go up to 18g (ART. 508) if the job is perimeter reinforcement: same abaca, more body at the edge. Declared pH 6.7. This is the last paper in the abaca family: if 18g is not resistant enough for you, do not go up in basis weight within abaca — change fiber.

Frequently Asked Questions

Any doubts about which one to choose? Contact us. Available at innovart.art · info@innovart.art