- Slitting & Rewinding
- PLC Control
BOPP tape Slitting Rewinder Machine are designed for various uses. The products covered are Paper, Film, Foil, Laminates, Paper Boards, Adhesive Tapes, Film Ribbons, Wall Paper, Photographic Paper & Film, Coated Paper, Telex & Fax Rolls, Film & Foil Small Rolls for manufacturers of packaging materials and converters. Special machines can also be designed for specific needs.
Several methods are available for soft materials like plastic films and paper. razor blades, straight, or circular blades are being used. Some blades cut through the material while others crush the material against a hard roll. Those are similar to knives and cut the material into narrow strips, which may be called coils when being rewound. The cutting blades can be set to a desired width. Some machines have many blades to increase the options of cutting widths, others have just a single blade and can be set to a desired location. The slit material is rewound on paper, plastic or metal cores on the exit side of the machine.
The process is used because of its low cost and high precision for mass production. Some machines have a program that monitors the blades and sharpens the blades often to maintain the quality and precision of the cut. Depending on the industry and the product that is being slit these machine can run between 10m/min (special metal webs) and 5000 m/min (paper making process). The machines can also incorporate extensive automation to precisely control material tension, automatically position the slitting knives, automatically align the cores onto which the material is wound and to reduce manual handling of the rolls.
Examples of materials that can be cut this way are: adhesive tape, foam, rubber, paper products, foil, plastics (such as tarps and cling wrap), glass cloth, fabrics, release liner and film.
See also: shearing (metal working)
For harder materials, such as sheet metal , blades cannot be used. Instead a modified form of shearing is used. Two cylindrical rolls with matching ribs and grooves are used to cut a large roll into multiple narrower rolls. This continuous production process is very economical yet precise; usually more precise than most other cutting processes. However, the occurrence of rough or irregular edges known as burrs are commonplace on slit edges. Also, the geometry of these rolls is determined by specific tolerances in addition to the type of material and work piece thickness.
- 3 Months
- All India
Office No: 11-15, Wing A, First Floor, Barcelona Complex, Nr. Odhav Circle, S P Ring Road, Kathwada, Ahmedabad, Gujarat, 382430, India