From tree to paper

What is the first step in the paper-making process?

• 
  Chemical pulping

• Screening the pulp

• Harvesting trees

• Bleaching the pulp

What role do recycled materials play in paper production?

• They are used only for packaging

• They are used to make ink

• They are discarded as waste

• They are used in the pulping process

What does chemical pulping involve?

• Using water to wash wood chips

• Using mechanical force to grind wood

• Using chemicals to dissolve lignan

  
  

• Using heat to melt wood chips

  
  

What is the purpose of the screening process in paper-making?

• To dry the pulp

  
  

• To add color to the pulp

  
  

• To filter out large particles

  
  

• To cut the paper into sheets

  
  

Why is bleaching sometimes used in the paper-making process?

• To add strength to the paper

  
  

• To add fragrance to the paper

  
  

• To make the paper waterproof

  
  

• To remove any remaining color from the pulp

  
  

What is the purpose of pressing the wet mat of fibers in the paper-making process?

• To mix the fibers with chemicals

• To remove impurities from the fibers

• To squeeze out excess water and compact the fibers

  
  

• To add color to the paper

What is a crucial step in ensuring the integrity of the paper fibers during drying?

• Tensioning the sheet to prevent wrinkles

  
  

• Adding more water to the sheet

  
  

• Using chemical treatments

  
  

• Increasing the temperature of the cylinders

  
  

What is the role of heat-emitting cylinders in the paper-making process?

• To add a glossy finish to the paper

  
  

• To evaporate the remaining water from the paper sheet

  
  

• To cut the paper into specific sizes

  
  

• To mix the pulp with water

  
  

Why might paper undergo additional treatments after cutting?

• To achieve specific finishes or textures

  
  

• To change its color

  
  

• To remove excess fibers

  
  

• To increase its weight

  
  

What is an example of a quality control measure in paper-making?

• Increasing the drying time

  
  

• Changing the type of raw materials used

  
  

• Measuring the paper's thickness

  
  

• Adding more pulp to the mixture