Home

Home

Food Nutrition

Food Chemistry

Food Microbiology

Food Packaging

Food Preservation

Food Processing

Food Additives

Food Analysis
Food Safety

Food Spoilage

Food Dictionary

News   New

Submit Article

view Article

Free Members Join

View members

Submit industry

View industries

Post Jobs

Job Vacancies

Post Institute

List Of Institute

Site Map

Contact Us

 

Food Packaging

Aluminum foil
Plastic wrap
Corrugated fiberboard  
Paper
Polyethylene
Polypropylene (PP)
Polyester
Polyvinylidene chloride

Plastics
Carton
Moisture vapour transmission rate  
Packaging developments
Packaging design and development  
Food biodeterioration
Food preservation methods
Factors affecting packaged product quality and shelf life
packaging for food marketing systems
Functions of  packaging
Packaging issues
Distribution performance testing
Packaging materials
Metal Cans
Packaging of food in glass containers
Plastics in food packaging
Coating of plastic films  
Lamination of plastic Film
Printing and labelling of plastic
Food contact and barrier properties of plastic
Sealability and closure
Retort pouch
Environmental and waste management issues of plastic
Active packaging
Paper and paper board packaging
Paper and paperboard manufacture
Packaging papers and paperboards
Properties and Designing of paper and paperboard
Types of paper and paper board package Modified atmosphere packaging
Gaseous environment in MAP
Packaging materials used In MAP

Modified atmosphere packaging machines
Quality assurance of MAP
 

  Corrugated fiberboard is a paper-based construction material consisting of a fluted corrugated sheet and one or two flat linerboards. It is widely used in the manufacture of corrugated boxes and shipping containers. The corrugated medium and linerboard are made of paperboard, a paper-like material usually 0.010 inch, or 0.25 mm thick. Paperboard and corrugated fiberboard are sometimes called cardboard.

              Manufacture of Corrugated Board

  In the classical corrugator the paper is humidified by means of high pressure steam. The humidity aims to soften the paper fibers so that the formation of the flute and the consequent gluing will go smoothly. The process adds a considerable amount of water to the papers. After the formation of the board this humidity has to be removed by drying in the so-called dry-end. Here the newly formed corrugated board is heated from the bottom by hot plates. On the top various pressures are applied by a load system on the belt.

  The corrugated medium is usually a 26 lb/1000 sq ft (127 g/m2) paperboard; higher grades are also available. It arrives to the corrugator on large rolls. At the single-facer, it is heated, moistened, and formed into a fluted pattern on geared wheels. This is joined to a flat linerboard with a starch based adhesive to form single face board. At the double-backer, a second flat linerboard is adhered to the other side of the fluted medium to form single wall corrugated board. Linerboards are often Kraft paperboard (of various grades) but may be bleached white, mottled white, colored, or preprinted.

  Common flute sizes are "A", "B", "C", "E" and "F" or microflute. The letter designation relates to the order that the flutes were invented, not the relative sizes. Flute size refers to the number of flutes per lineal foot, although the actual flute dimensions for different corrugator manufacturers may vary slightly. Measuring the number of flutes per lineal foot is a more reliable method of identifying flute size than measuring board thickness, which can vary due to manufacturing conditions. The most common flute size in corrugated boxes is "C" flute

  Corrugated fiberboard can be specified by the construction (single face, single wall, double wall, etc), flute size, burst strength, edge crush strength, flat crush, basis weights of components (pounds per thousand square feet, grams per square meter, etc), surface treatments and coatings, etc.

  The choice of corrugated medium, flute size, combining adhesive, and linerboards can be varied to engineer a corrugated board with specific properties to match a wide variety of potential uses. Double and triple-wall corrugated board is also produced for high stacking strength and puncture resistance.