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Categories: Book printing >> Support Center
The Flutes of Corrugated Board for Packaging Printing
Origin:Image Printing  Data: 3/13/2011  Keywords: packaging printing project,gift box packaging printing

In a packaging printing project, the designer should choose different flutes materials for corrugated board based on different strength requirements. Corrugated board is normally made in one of four flute sizes, designated A, B, C and E. However, there are other flute sizes available in the market which adapts the material to numerous usages. The flutes sizes are defined by their height and the number of flutes per unit length. Based on these properties the take-up factor is determined. The take-up defines the length of medium material used on a corrugated board structure compared with the length of facings.

A corrugated board packaging is usually built so that the flutes are oriented in the direction of the compression load of the package. The rigidity of corrugated board is influenced by five factors, height of flutes, frequency of flutes, integrity of flutes, elastic stiffness of the liners and fiber orientation of the paper used. The ranking reflects the top to bottom compression strength of the corrugated board material. However, it may not always reflect the compression strength of a corrugated board package, as the failure mode in a package is much more complex.

The corrugated board has many types of flute, like A, B, C, E and combinations. The structure can be single-face, single-wall and double-wall with various corrugation profiles. The surface paper should be white, brown kraft paper with coated outside liner. The corrugated board is popular for gift box packaging printing, drinks packaging, books packaging, advertising bags, decoration materials, folders and greeting cards etc.

Flutes Introductions:

Corrugated board is characterized by presence of a corrugated or fluted layer. Alternating flat liners are glued to fluted medium with different adhesives along the contact area of the top and bottom of crinkles and liners. The main characteristics of flute types are thickness (h) and pitch (t). The flute thickness is the distance between its top and bottom. The flute pitch is the distance between two tops of the adjacent flutes. The combination of these characteristics (thickness and pitch) determines the flute type.

Paperboard Flutes Features for Packaging Printing

Characteristics of flutes shown in below table

Flute

Thickness

Pitch

Number of flutes per meter of

corruqated sheet

E 1,1 - 1,6 mm 3,2 - 3,6 mm 295 - 315
B 2,2 - 3,2 mm 4,5 - 6,5 mm 160 - 222
C 3,2 - 4,5 mm 6,5 - 8 mm 125 - 155

Main flutes in single wall corrugated board

C flute corrugated board is designed for production of boxes and containers for transportation and storage of goods (high stacking strength).
B flute corrugated board is designed for production of boxes, containers and trays for transportation and storage of goods (low stacking strength, good printing surface).
E flute corrugated board is designed for production of small size packaging (low stacking strength, good printing surface).

Main flutes in double wall corrugated board

CB flute corrugated board is designed for production of boxes and containers for heavy articles requiring high protection (high stacking strength, high impact strength).
CE flute corrugated board is designed for production of boxes and containers for heavy articles requiring high protection (high stacking strength, high impact strength, good printing surface).

Corrugated types and grades

The corrugated board grades are determined by national standards.
Corrugated board is multi-layer material and its thickness is determined by a number of liners and flutings.

 C one wall corrugated board T - one wall corrugated board consists of two liners and one fluting.

 C double wall corrugated board n - double wall corrugated board consists of three liners and two flutings.

Main purpose of single wall corrugated board Grades T22 - T27, is use in containers and other packing media for packing of goods not subject to static loads.

Main purpose of double wall corrugated board, Grades n-32-34, is use in transportation packaging for goods requiring higher protection against mechanical damage and impacts and in corrugated packaging for large size articles; Grade n-35, is use in heavy duty and large size rigid packaging and containers.

Flutes of Corrugated Board for Gift Box Packaging Printing

photo book printing, comic book printing, cookbook printing, Hardbound Book Printing , Magazine Printing Services.All our printing is traditional offset printing, which produces the highest quality.  We believe digital printing can never match the sharp, clean results of offset and that?s why we don?t use it.


 

 
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As a professional book printing factory in China, Image Printing Packaging Ltd focus on book printing and packaging printing mainly for oversea and domestic customers. We are located in Shenzhen city, the book printing and packaging printing industrial center of China and even worldwide. Please be kindly note we offer a wide range of professional customed printing service with aggressive prices
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