Terminology On Paper & Pulp: Types of Paper and ...

Cylinder Paper Machine One of the principal types of papermaking machines, characterized by the use of wire-covered cylinders or molds, on which a web is formed. These cylinders may be partially immersed and rotated in vats containing a dilute stock suspension or may be equipped with a headbox or other apparatus for distributing the fibers.

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PRODUCTION OF CELLULOSE BY REMOVING NON .

D21D covers treatment of materials before passing to the paper-making machine. D21F covers papermaking machines and methods for producing paper thereon. D21H covers Pulp compositions (not covered by subclasses of D21C and D21D), impregnating or ... CPC Definition - D21C

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Papermaking - Wikipedia

Papermaking is the manufacture of paper and cardboard, which are used widely for printing, writing, and packaging, among many other purposes.Today almost all paper is made using industrial machinery, while handmade paper survives as a specialized craft and a medium for artistic expression.. In papermaking, a dilute suspension consisting mostly of separate cellulose fibres in water is drained ...

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PULP COMPOSITIONS; PREPARATION THEREOF NOT .

Papermaking per se: machines and methods D21F Calenders and accessories for papermaking D21G D21H 27/00 Special paper not otherwise provided for, e.g. made by multi-step processes Definition statement This place covers: Paper materials for a special use (release paper, tissue paper, packing paper, wallpaper, etc.) or having a multi-ply structure.

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Papermaking PAPERMACHINE – DRYING Introduction

Papermaking . PAPERMACHINE – DRYING . Introduction . Drying in papermaking serves two functions. First, it removes the remaining water in the web that cannot be removed by vacuum or pressing. Second, it causes fibres to bond together by hydrogen bonding. Types of Water in Web: The water remaining in a web after pressing is of several types ...

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Glossary of Papermaking Terms - PITA

A machine for converting paper from the reel to specific sheet sizes. CUTTING PIPE Water jets used to trim the rough edge off the paper while it is being made on the machine (deckle edges). COUCH The point on a papermaking machine where the wet web leaves the wire before the presses. CURL

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CPC Definition - D01G

CPC - D01G - 2016.11 D01G PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING (winding or unwinding, conducting or guiding laps, webs, slivers or rovings in general, sliver or roving cans, depositing in sliver or roving cabs B65H; preparation of fibres for paper-making D21) Definition .

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CPC Definition - D21C PRODUCTION OF CELLULOSE BY .

Definition; CPC-to-IPC ... D21D covers treatment of materials before passing to the paper-making machine. D21F covers papermaking machines and methods for producing paper thereon. D21H covers Pulp compositions (not covered by subclasses of D21C and D21D), impregnating or coating of paper, ...

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CPC Definition - D21D

CPC - D21D - 2016.11 D21D TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE Definition statement This place covers: Beating and refining methods and equipments for fibrous materials; purification methods and equipments for pulp suspensions acting by mechanical means, i.e. straining, screening, centrifugal

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CPC Definition - F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS .

Rolls, e.g. as guiding mechanism, in wet end of machines for making continuous webs of paper. D21F 1/00. Rolls, e.g. pressure rolls or suction rolls, in wet presses of the press section of paper making machines. D21F 3/00. Cylinders in dryer section of paper making machines. D21F 5/00. Rolls or their bearings in calenders. D21G 1/02

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Papermaking OVERVIEW AND INTRODUCTION 1. Introduction .

- Fourdrinier machines - twin-wire formers - multi-ply formers . By far the most common type of paper machine in use today is Fourdrinier. In this former, stock is drained on a moving horizontal screen called a fabric. The various parts of a typical Fourdrinier machine are illustration in Figure 3. The full machine is shown in Figure 4.

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CPC Scheme - D TEXTILES; PAPER

"pulp" means a dispersion, {e.g. an aqueous suspension,} comprising paper-making fibres and optional additives, which is to be processed, and covers the term "stock"; it also means dry paper-making fibres which are to be made into paper by either wet or dry processes; "paper" means paper, cardboard or wet-laid non-woven fabrics.

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Paper machine - Wikipedia

A paper machine (or paper-making machine) is an industrial machine which is used in the pulp and paper industry to create paper in large quantities at high speed. Modern paper-making machines are based on the principles of the Fourdrinier Machine, which uses a moving woven mesh to create a continuous paper web by filtering out the fibres held in a paper stock and producing a continuously ...

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Papermaker | Definition of Papermaker by Merriam-Webster

Papermaker definition is - one that makes paper. Recent Examples on the Web Gearing up for his re-election campaign, Franklin Roosevelt watched with mounting alarm as the papermakers and dairy farmers in New Hampshire started to consider forging their own reformist agenda. — Alexander Zaitchik, The New Republic, "This Is How Bernie Wins," 7 Feb. 2020 As the stock of rags for papermaking grew ...

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