Blown Film Extrusion

Blown film extrusion is a process used to manufacture plastic films and sheets. 

The process starts with the melting of plastic resin pellets, which are then extruded through a circular die to form a tube, or "bubble," of plastic. The bubble is then inflated by blowing air into it, causing it to expand and form a flat film. The film is then cooled and collapsed to form a flat plastic sheet, which can be wound onto a roll. 

Rotogravure printing involves process wherein metal cylinders engraved as per artwork transfer ink from ink fountain to substrate. 

It produces finest grid patterns, achieve the highest possible colour density, and deliver photographic print quality. 

Advantages

• High-Quality printing
• High Speed
• Consistency in printing
• Flexible and can print on variety of substrates
• Cost-effective for high volumes

Disadvantages

• Initial cost on cylinders
• Longer lead time due to cylinder preparation
• Visible dots for half tone prints

Lamination is the process in which two or more flexible packaging webs such as poly films, paper, aluminum foil are fused together using an adhesive to produce a multi-layer laminate web. 

Functions of Lamination

• Create barrier properties to protect products from light, moisture, gas
• Sandwich the ink and protect packaging designs
• Improve strength of material for more resistance to tearing

Slitting and Rewinding is the process wherein the Jumbo Rolls of materials are unwinded and fed through a slitter to slit the material into narrower size as per specific width requirements and rewinded into smaller rolls.