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Hancock Engineering designs, engineers, and manufactures new calenders to your exacting specifications from lab size to full production calenders from 12" up to 110" face width.
Typical Calenders:
- 2 Roll Vertical
- 2 Roll Vertical
- 2 Roll Vertical
- 3 Roll Vertical
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- 3 Roll Inverted 'L'
- 3 Roll 120° Offset
- 4 Roll Inverted L
- 4 Roll 'L'
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Calenders are used to impart certain characteristics, or change properties in materials. Some of these properties include:
- Porosity
- Surface smoothness
- Density
- Bonding
- Permeability
- Caliper Thickness Reduction
Calender Design Features:
- Individually driven rolls to produce variable nip friction ratios and speeds.
- Roll crossing (positive or negative) to attain gauge control.
- Roll adjust using 8800:1 ratio, ½ HP
- Roll bending for uniform thickness control through the web cross section
- Pre-loaded rolls (hydraulic or spring)
- Hollow bore gear boxes mounted on roll end or motor gear boxes with u-joint drive shafts in drive stand
- Rotary unions and supply pipe
- Drilled roll closure rings
- Tri-pass drilled rolls for stable temperature profile
- AC vector motors
- Bearing lube systems
- Cooling can units
- Digital control and monitoring of Gauge using LVDT's, scanning caliper lasers or GAMA backscatter
- Real-time display of last scan profile, roll defect mapping thickness and weight
- Bearing lubricating systems and hydraulic systems
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Parameters for the design and manufacture of Calenders include:
- Web Formation
- Bulk Reduction
- Gloss
- Laminating
- Frictioning
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- Heating Requirements (material and rolls)
- Process Speed
- Pressure
- Roll Composition
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- Surface Finish
- Material Type
- Material Width
- Roll Deflection Criteria
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