A4 specifications: 21 * 29.7 centimeters B4 specifications: 25 * 35.4, B5 specifications: 18.2 * 25.7
The specifications of the paper refers to the paper is made, after trimming and cutting the edges, cut to a certain size. In the past is how many "open" (for example, 8 or 16 open, etc.) to indicate the size of the paper, now I use the international standard, the provisions of the A0, A1, A2, B1, B2 ...... and other markings to indicate the width of the paper specifications. The standard specifies that the proportional relationship between the width (expressed as X) and length (expressed as Y) of the paper is X:Y=1:n .
In accordance with the basic area of the paper width, the width specifications are divided into A series, B series and C series, the width specifications for the A0 format size of 841mm × 1189mm, the width area of 1 square meters; B0 format size of 1000mm × 1414mm, the width area of 2.5 square meters; C0 format size of 917mm × 1279mm, the width area of 2.25 square meters, the width area of 2.25 square meters; the size of 917mm × 1279mm, the width area of 2.25 square meters. The format area is 2.25 square meters; the format specifications of copy paper are only A series and B series. If the A0 paper along the length of the way into two equal parts, it becomes A1 specifications, the A1 paper along the length of the direction of the folio, it becomes A2 specifications, so the folio to the A8 specifications; B8 paper is also in accordance with the method of folio to the specifications of the B8. A0 ~ A8 and B0 ~ B8 of the size of the width of the table below. Among them, A3, A4, A5, A6 and B4, B5, B6 and other 7 kinds of format specifications for copy paper commonly used specifications.
Example: "A4" paper, that is, the basic size of the A type of paper folded 4 times, so the area of an A4 sheet of paper is the basic paper area of 2 of the 4 times the square, that is, 1/16. the rest and so on.
General printing paper is the use of copy paper, copy paper classification is divided by size, there are several standards: 1, A-type; 2, B-type; 3, K-type, K-type paper is often referred to as the open type of paper, only in the country is useful for K-type paper. Now generally use A-type paper. Regardless of the type A type B, it is classified as such, such as A5 is twice as much as A6, A4 is twice as much as A5, A3 is twice as much as A4, B4 is twice as much as B5 B3 is twice as much as B4, and the classification of K-type is a large 1K paper is divided into two for the 2K, 2K paper is divided into half of the 4K, 4K is divided into half of the 8K, 8K is divided into half of the 16K, the 16K is divided into in half for 32K, etc.
There are also office printing paper, classification is based on the size of the paper and the number of layers, such as 241-1, 241-2, they were expressed in 1 layer and 2 layers of narrow line printing paper, of course, there are 3 layers of 4 layers; commonly used wide line printing paper and 381-1, 381-2 and so on.
There are also divided by the thickness of the paper, such as 60g, 70g, 75g, 85g, 120g, etc., refers to the weight of the paper in the unit area of more than one, because the density of the paper is basically the same, in the unit area of the weight of the paper is heavier, the thickness of the paper is thicker. For example, the general printing machine is about 40g of paper, and all-in-one machine with 50-60g of paper, and copiers with 70-85g of paper, printer with a general minimum do not use less than 60g thick paper, otherwise it is easy to jam.
Paper by use and quality classification (Continental Classification)
Usually divided into six categories: printing paper and paperboard; writing, graphic and reproduction paper and paperboard; packaging paper and paperboard; life, health and decorative paper and paperboard; technical paper and paperboard; processed paper categories.
Printing paper and paperboard
1, coated printing paper and paperboard
Offset printing coated paper, offset printing coated paper, offset printing coated paper, coated stamp paper, coated stamp paper, coated white paperboard, low quantitative offset printing coated paper, embossed offset printing coated paper, cast coated paper, cast coated paper, cast coated paper, cast coated white paperboard, cast coated white paperboard, cast coated white paperboard, non-glossy printing coated paper, Coated cardboard, coated boxboard, low quantitative gravure printing coated paper.
2, non-coated printing paper and paperboard
Newsprint paper, dictionary paper, map paper, chart paper, offset booklet paper, letterpress paper, school textbook paper, offset printing paper, single-sided offset printing paper, book cover paper, poster paper, white cardboard, metric cardboard, gravure printing paper, securities paper, stamps, paper, paper, Braille printing paper, poker face, weekly paper, thin letterpress paper, single-sided book cover paper, postcard cardboard, banknote paper, train ticket cardboard, ticket paper, cover cardboard, cover cardboard.
Culture, art, life paper and cardboard
1, writing paper
Typing paper, drawing paper, rice paper, writing paper, one-sided writing paper (glossy paper), drawing paper, watercolor paper, drawing paper, charcoal drawing paper, double-red paper, striped writing paper, ledger paper, burlap paper, Lianshi paper, leather drawing paper, watercolor writing paper, oil painting blanks, ink blotting paper, Plum red paper.
2, copying paper
Tracing paper, iron pen wax paper, dry electrostatic copy paper, solarization paper, dry diazo photographic paper, copying paper, typing copy paper, charcoal-free copy paper, two-low drawing paper, electrostatic copying tracing paper, typing wax paper paper, transcription paper, typing wax paper liner, thermal copy paper, electrostatic copying paper, charcoal-free copy paper.
3, hygienic paper
There are sanitary napkins, wrinkled toilet paper, diaper paper, thin non-woven fabrics, rodenticidal paper, ointment paper, medicated cotton paper, water-soluble medicated paper, tissue paper, wet tissue paper.
4, household paper
Shoe cardboard, woven paper, paper insoles, black photo cardboard, tablecloth paper, cloth paper, kitchen paper, powder paper, mirror paper, petticoat paper.
5, decorative paper
decorative surface paper, decal liner, waxed paper, decorative original paper, waxed original paper, wallpaper original paper, plastic-coated wallpaper, wrinkled original paper, self-adhesive original paper, plastic posting cardboard, gypsum cardboard, paper, paper, surface paper, ceramic film appliqué, ceramic film appliqué, ceramic film appliqué liner, metal appliqué, metal appliqué liner, enamel appliqué paper,
Packaging paper and paperboard
1, general-purpose packaging paper
Paper bag paper, kraft paper, egg paper, aluminum foil liner, wrapping needle paper, translucent paper, striped kraft paper, film protection paper, match paper, neutral wrapping paper, stretching paper bag paper, thin pages of wrapping paper, ordinary wrapping paper, striped wrapping paper, agricultural wrapping paper, soap wrapping paper, crumpled tire wrapping paper, paddle slag wrapping paper, aluminum ware Wrapping paper, packaging paper, Vellum cloth paper composite packaging materials, recycled kraft paper, recycled cement bag paper, waterproof bag paper, phosphorus fertilizer bag paper, recycled wrinkled bag sealing paper, wrapping paper, kraft cardboard, grey liner, blue package sandpaper, composite wrinkled paper, mechanism of the white paper, more empty aluminized paper, vacuum aluminized paper, film liner.
2, special wrapping paper
Industrial parchment paper, extra fine parchment paper, industrial parchment paper, extra fine parchment paper, neutral paraffin paper, neutral paraffin paper, cellophane, striped tar paper, striped tar paper, leachate moisture-proof paper, gas-phase moistureproof paper, gas phase antirust paper, black opaque paper, sodium benzoate antirust paper, neutral plastic wax moisture-proof wrapping paper, clamping line tar paper.
3, food wrapping paper
Food parchment paper, food parchment paper, candy wrapping paper, popsicle wrapping paper, imitation parchment paper, ordinary food wrapping paper, greaseproof paper, composite materials for liquid food packaging, extruded confectionery wrapping paper, pastry preservation of oxygen-isolating composite packaging materials, pastry preservation of oxygen absorber bag paper.
4, packaging cardboard
There are single-sided white cardboard, thick cardboard, yellow cardboard, neutral cardboard, boxboard, kraft boxboard, corrugated cardboard, standard cardboard, lift box cardboard, tea board, matches outside the box of cardboard, matches inside the box of cardboard, double-sided gray cardboard, green and gray cardboard.
Technical paper and paperboard
1, testing and information recording paper and paperboard
There are information processing unperforated paper tape, perforated teletype paper, electronic computer continuous recording format paper, industrial automation instrumentation recording paper, electrocardiogram paper, information processing continuous format paper, single-page teletype typewriter paper, perforated cardboard, wet sonar recording paper, electric spark recording paper, Red translucent force-sensitive recording paper, white translucent force-sensitive recording paper. Deep-well water-resistant recording paper, heat-sensitive fax paper, deep-well polyester cardboard, deep-well pressure recording paper, electroencephalography paper, low-voltage electrosensitive paper, recording paper for oscillating wave, electroacoustic paper, force-sensitive recording paper, meteorological recording paper, calibrating meter ink ribbon paper, thermal recording paper, ECG original paper, spark fax paper, spark transcription fax paper, pH test paper original paper, hydrogen sulfide analysis paper, carbon paper, wet electrochemical recording paper, acoustic core paper, meter Recording paper, potassium chloride recording paper, perforated recording paper, electrostatic aunt paper. 150 fuel oil filter paper, HM-180 aviation filter paper, J-180 cotton-gum filter paper, M-150 cotton-gum filter paper, unimpregnated 530 filter paper, heat-sealed tea filter paper, K-120 air filter paper, K-280 air filter paper, K-80 air filter paper, No. 1 filter paper, No. 2 filter paper, No. 1 microfilter paper, No. 2 microfilter paper, No. 3 microfilter paper, No. 01 air filter paper, No. 02 air filter paper, No. 03 air filter paper, No. 04 air filter paper, No. 05 air filter paper, No. S-06 air filter paper, Desert Air Filter Paper, MH-530 Filter Paper, No. 1.5 Cotton Machine Filter Paper, No. C-180 Kaneko Cotton Diesel Filter Paper, NC-220 filter paper, wrinkled 220 filter paper, beer filter paper, decontamination filter paper, fiberglass filter paper, milk filter paper, water purification paper, cancer cell filter paper, filter paper for precision grinder, hydraulic oil filter paper, activated carbon filter paper, activated carbon filter paper for radioactive gas measurement, synthetic fiber-containing filter paper, non-corrugated sheet WG-59 filter paper, oil and gas separation filter paper, slit filter paper, filter paper for smoke meter, lead smoke filter paper, High temperature resistant air filter paper, ion exchange resin filled filter paper, cation exchange fiber filter paper, uncoated sterilization type asbestos filter plate, coated sterilization type liquid net filter plate, uncoated sterilization type liquid net filter plate, SI wrinkled filter paper, high efficiency filter corrugated raw paper, type 69 gas mask filter paper, type 69 purified air filter paper, type 49 purified air filter paper, 0.1um high efficiency air filter paper, brewing tea wrapping paper, triple filter paper. filter paper.
3, electrical insulation paper and paperboard
There are impregnated insulating paper, power cable paper, communication cable paper, semiconductor cable paper, telephone paper, insulating paperboard, coiled insulating paper, electrolytic capacitor paper, capacitor paper, crumpled cable paper, polyester composite insulating paper, double double-density dry electrolytic capacitor paper, 110 ~ 330kV high-voltage cable paper, 500kV ultra-high-voltage cable paper, porcelain dielectric capacitor professional cardboard, battery diaphragm paper, H-class electrical insulating paper, battery diaphragm paper, self-extinguishing impregnated insulating paper, 50kV electrical appliances turn-to-turn insulating paper, 50kV oil-paper casing insulating paper, insulating crumpled paper, unimpregnated liner paperboard.
4, industrial and agricultural production supporting paper and paperboard
Red light gun paper, tampon tube steel cardboard, filter stick paper, ammunition cartridge paper, fuse paper, gravel paper, explosives cigarettes, hard steel cardboard, soft steel cardboard, steel cardboard, steel paper tubes, steel paper, paper, linoleum paper, (all hemp) cigarette paper, silkworm seed paper, jacquard cardboard, accordion box board, asphalt waterproof cardboard, plastic modeling paper, golden hot press copy paper, silver hot press paper, record hot press paper, cigar smoke paper, water pine original paper, water pine paper, cigar smoke original paper, cloth wheel paper, metallographic sandpaper, water-resistant sandpaper original paper, clock face paper, adhesive paper, moisture-absorbent paper, lacquered paper original paper, wine bottle cork seal liner paper, rice nursery transplant paper, sugar beet nursery paper, onion skin paper, nursery paper, black hot press paper, PVC heat sealing paper, battery blotting paper, parchment paper, 501 perforated black tape paper, photographic film liner paper, woolen professional paper, wax stem match paper, abrasive film base paper.
5, other technical paper
Dental engagement paper, blood test paper, stomach cancer test paper, fracture fixation splints, flame retardant paper, filling carbon insulation paper, water-soluble paper, quick-flame paper, bacterial culture paper, heat-resistant insulation paper, font paperboard.
Mechanical paper
1. Printing paper Including newsprint, letterpress paper, offset paper, gravure paper, coated paper, book cover paper, poster paper, etc.
2. Writing paper Including writing paper, glossy paper, typewriting paper.
3. Drawing, drawing paper Including tracing paper, drawing paper, drawing paper.
4. Electrical insulating paper, including capacitor paper, telephone paper, cable paper, insulating paper.
5. Cigarette paper Including cigarette paper, cigarette paper and so on.
6. Absorbent paper, including ink absorbing paper, filter paper, steel paper, parchment paper and so on.
7. Paper for meter Including typewritten telegraph paper tape, rolled telegraph paper, punched cardboard, and so on.
8. Photographic paper, including photographic paper, photographic paper.
9. Transfer paper including copy paper, typing wax paper, etc..
10. Industrial technical paper, including jacquard paper, sandpaper, paper rope paper, moisture-proof paper, corrugated paper and so on.
11. Packaging paper, including kraft wrapping paper, grass pulp wrapping paper, wood pulp wrapping paper, paper wrapping paper, reed pulp wrapping paper, pulp wrapping paper, plant parchment paper, imitation parchment paper, carton paper, match paper, paper bag paper, and so on.
Cardboard
1. Binding cardboard, including gray waste paperboard, binding box cardboard.
2. Box making cardboard Including strawboard, white cardboard, corrugated cardboard, boxboard and so on.
3. Electrically insulated cardboard, including electrically insulated cardboard, rayon cardboard, and so on.
4. Industrial and technical paperboard, including ticket board, kraft board, jacquard board, word mold board, and so on.
5. Construction paperboard, including roof paperboard, wall paperboard, linoleum paper, etc..
6. Shoemaking cardboard Including heel cardboard, rag leather insole cardboard.
But just don't know what you are talking about the specific type of paper used!