Product Overview
Capacitor Film Slitting Equipment converts wide capacitor film master rolls into narrow finished rolls for film capacitor production. It processes thin PP and PET films, including metallized and non-metallized structures.
The system combines unwinding, web guiding, tension control, slitting and rewinding. Machine configuration is selected from film thickness, master-roll width, roll diameter, finished-roll width, core size and required production speed.
Capacitor Film Processing
Capacitor films can be only a few micrometres thick. Controlled tension and stable web transport are required through the slitting path to maintain film geometry and finished-roll accuracy.
Metallized film requires controlled contact and cutting conditions around the coated surface and margin area. Slitting parameters are matched to film thickness, metallization structure and required edge profile.
The rewinding section controls film position and winding conditions for each finished roll. Correct tension and roll alignment help maintain consistent roll geometry for the next production process.
Slitting Methods
Straight Cut
Straight cutting produces a continuous linear edge and is used for standard capacitor film widths. Razor cutting can be configured according to film thickness and target slit width.
Wave Cut
Wave cutting produces a controlled edge profile for capacitor film applications requiring a defined film margin. Wave length and amplitude can be selected according to the film construction and winding requirement.
Tension Control
Low-Tension Transport
Thin films require controlled tension from unwinding through rewinding. The operating range is selected according to film thickness, web width, roll diameter and material characteristics.
Web Guiding
Automatic web guiding keeps the film laterally aligned through the cutting section. Stable alignment supports repeatable slit positioning across the finished rolls.
Precision Rewinding
Core Positioning
Rewind cores are positioned according to finished-roll width and the required winding arrangement. Core dimensions are matched to the finished roll specification.
Winding Stability
Controlled winding conditions help maintain uniform roll formation. Rewind settings are selected according to film thickness, finished-roll diameter, core size and required winding condition.
Key Equipment Features
Precision Slitting
The cutting section supports straight or wave cutting according to film construction, finished width and edge requirements.
Controlled Web Tension
Tension control manages the film through unwinding, cutting and rewinding, supporting stable processing of thin capacitor films.
Automatic Guiding
Web guiding maintains the lateral position of the film before and during slitting, supporting consistent finished-roll placement.
Flexible Configuration
Unwinding, cutting and rewinding specifications can be matched to different film thicknesses, master-roll dimensions, slit widths and finished-roll requirements.
Technical Parameters
|
Parameter |
Typical Range |
|
Applicable Film |
PP, PET, Metallized PP/PET |
|
Film Thickness |
2–15 μm |
|
Master Roll Width |
400–1,750 mm |
|
Master Roll Diameter |
Up to 650 mm |
|
Finished Roll Diameter |
Up to 350 mm |
|
Slit Width |
4.5–150 mm |
|
Straight-Cut Speed |
Up to 500 m/min |
|
Wave-Cut Speed |
Up to 350 m/min |
|
Cutting Method |
Straight Cut / Wave Cut |
|
Web Guiding |
Automatic |
|
Rewinding |
Multi-Roll |
Application Areas
Film Capacitors
The equipment converts dielectric films into narrow rolls for film capacitor winding and related manufacturing processes.
Metallized Films
It processes metallized PP and PET films where controlled cutting, web alignment and finished-roll formation are required.
Electronic Film Converting
The configuration can also be applied to other thin polymer film converting processes with comparable thickness, width and winding requirements.
Selection Criteria
Film Specification
Confirm film material, thickness, metallization structure, master-roll width and roll diameter. These values determine the suitable web-handling and cutting configuration.
Finished Roll
Define finished width, roll diameter, core size and winding arrangement. The number of finished rolls required from each master roll also affects the slitting layout.
Production Target
Specify the required running speed together with film thickness, slit width and cutting method. These parameters should be evaluated as one operating set when selecting the machine configuration.
Quality Control
Edge Inspection
Slit edges are checked for cutting continuity, edge condition and specified profile. Wave-cut dimensions can be verified against the selected cutting geometry.
Roll Inspection
Finished rolls are checked for width, alignment, winding formation and dimensional consistency before entering the next production stage.
Trial Verification
Production samples can be used to verify film transport, cutting conditions, finished-roll formation and target slit dimensions before final equipment approval.
FAQ
Q: What films can be processed?
A: The equipment can be configured for PP, PET, metallized PP and metallized PET capacitor films. The applicable range depends on film thickness and material structure.
Q: What film thickness can be slit?
A: Typical configurations cover approximately 2–15 μm. The actual range depends on web width, film structure, slit width and required running speed.
Q: Can the machine perform both straight and wave cutting?
A: Yes. The cutting configuration can be selected according to film construction, finished width and the required edge profile.
Q: How is the slit width determined?
A: Slit width is determined by the required capacitor dimensions, master-roll width, finished-roll quantity and selected cutting method.
Q: What information is needed for machine configuration?
A: The main data includes film material, thickness, master-roll width and diameter, target slit widths, finished-roll diameter, core size, cutting method and production speed.
Hot Tags: capacitor film slitting equipment, China capacitor film slitting equipment manufacturers, factory
