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Coreboard

Paper Grades for Paper Tubes

  • IRIS
  • SNOWDROP
  • VIOLET
  • ACACIA
  • CYPRESS
  • HAZEL
  • ASTER
  • LILAC
  • OLIVE

IRIS - Paper Grade for Partially Oriented Yarn (POY) Paper Tubes

POY Paper Tube Requirements

  • Yarn Winding Speed 3000 to 4000 mpm
  • Dimensional stability for automated winders
  • Enhanced horizontal strength to sustain yarn tension and package weight
  • Excellent vertical strength to eliminate damage during transportation and auto handling
  • Smooth surface for complete unwinding of yarn
  • Recyclability

Salient Features of Paper

  • Consistency in dimensional parameters
  • Availability in wide range of bulk to achieve required dimensions at the tube winding stage
  • Considerable tensile strength for better run-ability on machine
  • Minimum dimensional variation in changing ambient conditions
  • Special measures to achieve greater horizontal and vertical strength
  • Ideal surface for uniform adhesive application & bonding 

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 300-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

SNOWDROP – Paper Grade for Fully Drawn Yarn (FDY) Paper Tubes

FDY Paper Tube Requirements

  • Yarn Winding Speed 4000 to 6000 mpm
  • Dimensional conformity
  • Distinct top layer paper and adhesive to prevent tube bursting at start up
  • Resilient tube to withstand yarn tension at 6000 mpm winding speed
  • Superior vertical strength to eliminate damage during transportation and auto handling

Salient Features of Paper

  • Congruity in dimensional specifications
  • Desire bursting strength to avoid tube shrinkage & delamination
  • Apt tensile strength for better runnablity on machine
  • Controlled moisture content for better gluablity
  • Improved specification for horizontal and vertical strength
  • Appropriate stiffness
  • Desired surface for uniform adhesive application

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 230-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

VIOLET – Paper Grade for Nylon Paper Tubes

Nylon Paper Tube Requirements

  • Non-shrinkage tube
  • Dimensional Stability
  • Tube should not sag and change dimensionally after winding of nylon yarn
  • High horizontal strength to withstand yarn tension
  • Perfect bonding of layers to sustain contact roller pressure
  • Bottom layer hardness to resist chuck pressure due to high yarn tension
  • Greater recyclability 

Salient Features of Paper

  • Consistency in dimensional parameters
  • High slit roll tension for tight winding of tube
  • High resilience
  • Better surface for uniform adhesive application & bonding
  • Good tensile strength for better runnability on machine
  • Controlled moisture content for better gluability
  • Superior horizontal and vertical strength
  • Inbuilt hardness to withstand chuck pressure

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 300-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

ACACIA – Paper Grade for Draw Textured Yarn (DTY) Paper Tubes

DTY Paper Tube Requirements

  • Yarn winding speed 600 to 1100 mpm
  • Straightness to avoid vibration during yarn winding
  • Smooth surface to eliminate layer falling
  • Superior strength to sustain pressure during long doffing time
  • High vertical strength for damage free transportation and storage
  • Exceptional dimensional stability 

Salient Features of Paper

  • Distinct surface for uniform adhesive application
  • Controlled moisture content for better gluablity
  • Minimum dimensional variability even in changing ambient conditions
  • Consistency in dimensional parameters
  • Smooth surface for uniform glue application
  • Greater horizontal and vertical strength
  • Greater tensile strength for better runnability on machine

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 350-420
Moisture Content % 6 to 9
Cobb g/m2 50-200

CYPRESS – Paper Grade for Paper and Paper Board Core

Paper & Paper Board Core Requirements

  • Thickness 10 to 15 mm & strength 1500 to 2000 N/100 mm
  • Dimensional Stability
  • Straightness across the length to avoid vibration of paper core
  • Controlled moisture for shrink free performance
  • Solidity
  • Bottom layer hardness to resist chuck pressure at high speed winding
  • Reusability

Salient Features of Paper

  • Consistency in dimensional parameters
  • Controlled moisture content for better gluability
  • Better surface for uniform adhesive application
  • Good tensile strength for better runnability on machine
  • Better tear resistance
  • Improved technology for better horizontal and vertical strength
  • Availability in higher bulk for weight reduction to facilitate cost reduction in core

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 300-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

HAZEL – Paper Grade for Writing, Printing & Tissue Paper Core

Writing, Printing & Tissue Paper Core Requirements

  • Thickness 12 to 15 mm & strength 2500 to 3500 N/100 mm
  • Stable Dimensions
  • Straightness across the length to avoid vibration
  • Low moisture to shrink free performance
  • Firm bottom layer to resist chuck pressure at high speed winding
  • High horizontal crush to avoid shrinkage
  • Exceptional beam strength

Salient Features of Paper

  • Dimensional accordance
  • Adequate moisture content for better gluability
  • High slit roll tension for tight winding of core
  • Fitting surface for even glue application and uniform bonding
  • Special measures to achieve greater horizontal and vertical strength

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 300-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

ASTER – Paper Grade for News print Paper Core

News Print Paper Core Requirements

  • Thickness 14 to 15 mm & strength 3500 to 4000 N/100 mm
  • Dimensions adherence
  • Straightness across the length to avoid vibration of paper core
  • Low moisture for shrink free performance
  • Extra hard bottom layer to resist chuck pressure at high speed winding
  • Advanced horizontal crush to avoid shrinkage

Salient Features of Paper

  • Consistent dimensional parameters
  • Minimum variation with changing environmental conditions
  • Compelling slit roll tension for tight winding of core
  • Appropriate stiffness
  • Better tear resistance
  • Improved gluability
  • Higher edge compression
  • Smooth surface for even glue application
  • Greater horizontal and vertical strength

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 350-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

LILAC – Paper Grade for Film Core

Film Core Requirements

  • Thickness 8 to 18 mm & strength 2000 to 3500 N/100 mm
  • Dimensions stability for automated core handling equipment
  • Oval free to prevent film stretching and web break
  • Linearity across the length for uniform winding tension & smooth unwinding
  • Conditioned to prevent core shrinkage and loose winding
  • Waviness free surface
  • Minimum spiral gap width to avoid gap sensation on film

Salient Features of Paper

  • Consistent dimensional parameters
  • Regulated moisture content for better gluability
  • Better surface for uniform application and bonding
  • Higher tensile strength for better runnability on machine
  • Improved technology for better horizontal and vertical strength
  • Availability in higher bulk for weight reduction to facilitate cost reduction

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.3
Basis Weight g/m2 350-450
Moisture Content % 6 to 9
Cobb g/m2 50-200

OLIVE – Paper Grade for Paper Cone

Paper Cone Requirements

  • Dimensional accuracy for efficient functioning of high speed automated winders
  • Round and balanced to avoid bouncing and vibration during high speed winding
  • Velvet surface to facilitate complete un-winding of the yarn
  • Enhanced horizontal strength to sustain yarn tension during winding
  • Improved vertical strength to avoid damages during handling and transportation
  • Appropriate paper absorption characteristics to avoid bleeding of ink and collapsing of cones during steaming
  • Precise notch, groove and suitable edges to facilitate yarn winding and to prevent tail loss
  • Suitable inner groove to assist easy anti nesting of cones during winding

Salient Features of Paper

  • Consistent dimensional parameters
  • Special characteristics to achieve greater horizontal and vertical strength
  • Ideal surface to facilitate proper adhesive application and bonding
  • Superior ring crush and higher tensile strength for better runability on machine
  • Suitable absorption properties
  • Adequate stiffness to support notching and grooving of cones

Paper Specification

Physical Properties Unit Specification
Bulk cm3/g >1.4
Basis Weight g/m2 315-350
Moisture Content % 6 to 9
Cobb g/m2 300-450
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