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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 |