Paper101

Quick answer: Water-hyacinth paper uses stems and leaves of a fast-spreading aquatic plant. Harvested biomass is washed, dried, chopped and pulped or beaten, then usually blended with stronger fibre to make handmade sheets, packaging or board. Water-Hyacinth Paper is sold or encountered as handmade paper, cards, baskets, packaging, board and community craft products. Its main advantages are can…

Quick answer: Paper jams occur when a sheet fails to separate, feed, travel, image or exit correctly. Moisture, curl, static, damage, incorrect size or weight, worn rollers, overloaded trays and debris are common causes. A jam is not always a “bad paper” problem. Printers use precisely timed rollers, sensors, guides and heat. The paper must have suitable stiffness, friction, moisture and…

Quick answer: A5 paper is 148 × 210 millimetres, or 14.8 × 21 centimetres and approximately 5.83 × 8.27 inches. It has the ISO A-series aspect ratio of 1:√2, so it can be enlarged or reduced to neighbouring A sizes without changing the page shape. A5 is half an A4 sheet and is close to the familiar small-notebook and digest-book format. It is compact without forcing body text into very narrow…

Quick answer: Fountain-pen ink feathers when it spreads sideways through the paper’s fibre network, and it shows through when the sheet lacks enough opacity to hide the writing. Bleed-through occurs only when ink penetrates substantially into or through the sheet. Fountain pens deliver a continuous water-based ink flow. A broad or wet nib, saturated ink and slow handwriting can place far more…

Quick answer: Ink bleeds through when liquid or colourant penetrates far enough into the sheet to become visible or emerge on the reverse. Paper porosity, sizing, thickness, coating and the ink’s volume and chemistry all influence the result. “Bleed-through” is often confused with show-through and feathering. Show-through is seeing an image through the paper because the sheet is not opaque…

Quick answer: Polypropylene paper is a plastic printing substrate engineered to handle like paper. It may be a solid film, a microporous sheet or a multilayer grade with a printable surface. It is waterproof and does not absorb moisture like cellulose. Polypropylene Paper is sold or encountered as durable labels, maps, menus, tags, manuals, signs and waterproof print. Its main advantages are…

Quick answer: A4 paper is 210 × 297 millimetres, or 21 × 29.7 centimetres and approximately 8.27 × 11.69 inches. It has the ISO A-series aspect ratio of 1:√2, so it can be enlarged or reduced to neighbouring A sizes without changing the page shape. A4 is the default office-paper format in the United Kingdom and most countries using ISO paper sizes. It balances readable page area with economical…

The Materials Journalism Foundation, operators of tar.fyi and paper101.uk, have recieved invite-only membership into the Information Economy Allience earlier this week. MJF thanks the Social Centre for Research for Inclusive, Better and Equal Life (SCRIBE) for this incredible honour and opportunity. The Information Economy Alliance is an prestigious independent network created by the Social…

Quick answer: A3 paper is 297 × 420 millimetres, or 29.7 × 42 centimetres and approximately 11.69 × 16.54 inches. It has the ISO A-series aspect ratio of 1:√2, so it can be enlarged or reduced to neighbouring A sizes without changing the page shape. A3 is exactly twice the area of A4. It is the largest format supported by many office multifunction printers and a useful bridge between document…

Quick answer: Ordinary paper weakens when wet because water disrupts many of the hydrogen bonds between cellulose fibres, lubricates the fibre network and allows fibres to swell and move. Dry paper gains much of its strength from contact and bonding between a large number of overlapping fibres. Water enters that network readily unless the sheet has strong sizing or a wet-strength treatment. The…

Quick answer: Kenaf is an annual fibre crop with a long bast fraction around a shorter woody core. The fractions can be separated or pulped together and used in printing, packaging, board or handmade paper, often in blends. Kenaf Paper is sold or encountered as printing paper, newsprint trials, board, packaging, stationery and handmade sheets. Its main advantages are rapid crop cycle; bast…

Quick answer: A2 paper is 420 × 594 millimetres, or 42 × 59.4 centimetres and approximately 16.54 × 23.39 inches. It has the ISO A-series aspect ratio of 1:√2, so it can be enlarged or reduced to neighbouring A sizes without changing the page shape. A2 is half an A1 and one quarter of A0. It is large enough to carry detailed diagrams while remaining manageable on many studio tables and…

Quick answer: Paper cuts often hurt disproportionately because they are shallow injuries in nerve-rich areas such as fingertips, they move repeatedly during daily use, and the thin cut can expose or irritate nerve endings without producing much protective clotting. Paper is not uniquely poisonous or chemically sharp. The pain comes mainly from location, cut geometry and repeated disturbance.…

Quick answer: Reed paper may use common reed, giant reed or related fibrous stems. Reeds can be chopped and pulped into true paper; this should be distinguished from ancient papyrus, which is formed from layered strips rather than dispersed pulp. Reed Paper is sold or encountered as handmade paper, art sheets, packaging, board and local non-wood fibre projects. Its main advantages are available…

Quick answer: Paper often tears more cleanly or easily in one direction because machine-made fibres tend to align with the direction of manufacture, producing grain and directional mechanical properties. A sheet looks uniform, but its fibre network is anisotropic: it does not behave exactly the same in every direction. On a paper machine, flowing stock and the moving forming fabric orient more…

Quick answer: A1 paper is 594 × 841 millimetres, or 59.4 × 84.1 centimetres and approximately 23.39 × 33.11 inches. It has the ISO A-series aspect ratio of 1:√2, so it can be enlarged or reduced to neighbouring A sizes without changing the page shape. A1 is half the area of A0. Cutting an A0 sheet parallel to its shorter edge produces two A1 sheets, subject to normal cutting…

Quick answer: A0 paper is 841 × 1189 millimetres, or 84.1 × 118.9 centimetres and approximately 33.11 × 46.81 inches. It has the ISO A-series aspect ratio of 1:√2, so it can be enlarged or reduced to neighbouring A sizes without changing the page shape. A0 is the starting sheet in the ISO A series. Its nominal area is one square metre; rounding the sides to whole millimetres produces the…