The document outlines the steps to prepare paper from bagasse, including choosing bagasse as the raw material, using a chemical pulping method to extract fibers, bleaching the pulp, calendaring to smooth the paper, and drying. Key points are that bagasse requires less bleaching than wood, yields fibers of similar quality to hardwood at lower cost, and the produced paper has good absorbency when dried to 12% moisture content. The process involves boiling bagasse with sodium hydroxide to separate fibers, bleaching, laying the pulp into a circular mesh, calendaring twice or thrice, and drying the paper using sunlight.

1. PREPARATION
OF PAPER

2. STEPS INVOLVED IN PAPER
PREPARATION
 Choosing the raw material
 Choosing the pulping method
 Preparation of pulp
 Bleaching
 Calendaring process
 Drying

3. CHOOSING THE RAW MATERIAL:
 We can prepare the paper from the all woods but the all woods doesn’t give the good quality paper.
 so first of all we choose the best raw material
we selected bagasse for our paper preparation
 It will give the good quality paper
 cost wise efficiency
 Quality of bagasse pulp is similar to the hardwood pulps
 It requires the less bleaching agent than the wood pulp to achieve the brightness
 Fibers are long (1.7mm) and it is suitable for making tissues, newsprint and writing paper
 Bagasse contain 65-68% of fibers, 25-30% of pith, 2% of sugar , 1-2% of minerals.

4. CHOOSING THE PULPING
METHOD:
There are different types of pulping
method
MAJOR TYPES ARE:
 Chemical pulping method
 Mechanical pulping method
We choose the chemical pulping method for our paper preparation because to
obtain good quality paper (for good quality paper fiber should not be broken)
Chemical pulping = fibers should not be broken
Mechanical pulping = fibers are broken ( due to crushing )

5. PREPARATION OF PULP:
We selected the chemical method for
preparation of pulp
PULPING:
It is process of extracting the fibrous material from the wood or
other raw material
 From the bagasse we extract the fibers by adding the chemicals to the
bagasse
Chemical we used= NaOH(sodium hydroxide)

6. Process in detail:
 Take the vessel and add the required quantity of water and put the bagasse in
the water
 Start the water to boil
 And then add the chemical (sodium hydroxide) to the vessel
 keep boiling the water until the fibers separated from the bagasse
 Finally the pulp has been prepared
 After this we want remove the dust present in the pulp
 Finally the bleaching process have been done by adding the bleaching
powder to pulp.

7. Why we want done bleaching
Bleaching has been done to make the pulp to white color by adding the
bleaching agents.
 usually more bleaching was required to the wood pulp because it was in
brown color
 For our paper preparation the bleaching agent was not required in more
amount because the bagasse doesn’t require more bleaching agent
 bagasse pulp was already in white color

8.  After bleaching was done take out the pulp material in mesh
 Mesh can be either in circle or square shape or some other shape
according to customer requirement
 For our preparation of paper we selected the circular mesh

9. CALENDARING
 It is usually done to smoothening the paper
 It reduces the uneven areas of the paper and roughness of paper
 Finally it brings the paper to the flat surface without uneven areas
 Calendaring is done twice or thrice

10. DRYING:
 Drying is the process of reducing the mount of water content in the paper.
 Paper should contain 12% of moisture content
 Then only the absorbing of ink quality was good
 so dry the paper up to 12% of the moisture content
In company only they use the big dryers machines,for the single paper
production we use the SUNLIGHT to dry the paper.
we keep the paper under the sunlight until the paper became dry.
 Finally paper has been prepared.

11. THANK YOU!!!!