About Handmade Paper >> Manufacturing Process
1. SORTING & DUSTING: The raw material, waste cotton rags, is sorted by hand to remove foreign materials like plastics, iron and dust etc. that would contaminate the pulp.
2. RAG CHOPPING: The sorted cotton rags are put through a mechanized rag chopper that cuts the rags into small uniform sized pieces. In the past this process was done manually using a curved knife mounted on a wooden board.
3. BEATING: Beating is the most important step in the handmade paper making process. The chopped rags are converted into a fine pulp in a `Hollander Beater' by mixing water. Inert chemicals, like rosin soap and alum are added to give the paper the desired consistency and blot free characteristic. When making colored and or textured papers, the color dyes and or textured materials like straw, hemp, grass, silk and jute fibers etc., are added during this process. The resulting pulp is ready for sheet formation.
4.SHEET FORMATION: Dipping is the traditional method. In this method the pulp is transferred from the beater into a masonry trough or vat. Depending on the thickness of the paper required, the pulp is diluted by mixing it with water. The mould, made of a wooden frame with a wire mesh or a bamboo stick mat, is dipped by hand into the pulp. The frame is then shaken side to side horizontally (this gives the fiber cross linking pattern and strength a unique characteristic of handmade paper) and lifted out of the vat. A sheet of pulp is formed over the mould. This method requires a skilled operator and is physically demanding.
5.COUCHING: The wet paper sheet is then transferred onto a cloth or a felt piece of fabric, a couch, which acts as an interleaf separating the wet sheets.
6. PRESSING: A hydraulic press then squeezes out the excess water from the sheets. This compresses the pulp adding strength to the fiber and facilitating the drying process.
7. DRYING: Each sheet is dried in the open air. For colored papers drying in the shade, though slower, is preferred in order to obtain uniform color on both sides of the sheet.
8. CLEANING & SIZING: The sheets are then inspected for unwanted foreign matter. Small particles and dirt are removed manually with a sharp instrument.
9. CALENDERING: Each sheet is placed between metallic plates and passed through spring loaded rollers in a calendering machine. This smoothens the paper and also enhances the gloss.
10. CUTTING: At this point the sheet still has a deckle edge. The sheet may remain uncut if required by the customer. However, typically, the sheets are machine cut to a standard 22"x30" or 56x76 cm. size and then packed for shipment.