OverviewThe Crest WSL is a high-precision slitter rewinder and optional inline laminator engineered for tension-sensitive converting of flexible films, specialty foams and laminates. It integrates pneumatic circular slitting, loop-controlled center winding and an advanced inline lamination station to enable single-pass and dual-pass workflows while preventing material deformation and telescoping.
Key capabilities- Pneumatic circular knives for accurate, burr-free slitting and fast, operator-friendly knife changeovers.
- Loop-controlled center winding for deformation-free winding and stable tension across full roll diameter.
- Optional inline Corona surface activation for improved adhesive anchoring.
- Dual-roller nip lamination system to prevent micro-air inclusions and ensure homogeneous composite quality.
- Modular configuration supporting single-pass and dual-pass lamination workflows on one heavy-duty platform.
Applications / Where it is used- Deformation-free master roll converting for advanced foams, high-tack adhesive laminates and technical films.
- High-precision slitting for converters requiring ultra-clean edges without adhesive bleeding or material fraying.
- Multi-pass lamination and converting workflows (e.g., production of self-adhesive flexo plate carriers) combining foam activation and backing application in two passes.
Process flow (dual-pass example)- PASS 1: Foam Activation & Adhesive Coating — unwinds specialty foam, applies inline Corona treatment to activate the surface, then laminates a high-tack adhesive under precise nip pressure for a durable bond.
- PASS 2: Plastic Backing Application — the laminated adhesive foam from Pass 1 is fed back in; the plastic backing is applied (Corona off) and pneumatic circular knives slit the final laminate to customer-specified widths.
Suitable materials- Technical foam laminates (examples: ProBAK®, Softprint®, Cushion-Mount™)
- Flexographic backing and compressible foams
- Polyester (PET) and PVC plastic backing films
- High-tack self-adhesive laminates
- Protective films and release liners
Best suited for- Converters of delicate, compressible foams requiring precise tension control to avoid structural deformation.
- Operations needing 100% bubble-free lamination with dual-roller post-pressing to eliminate micro-air inclusions.
- High-volume, heavy-duty production handling jumbo rolls with demanding center-winding requirements.
- Short-run flexibility with rapid, toolless changeovers between core sizes.
Why it performs- Maximized yield and minimized scrap via pneumatic slitting and responsive loop-controlled tension.
- Zero-defect composite quality from stable center winding and dual-roller lamination.
- Heavy-duty industrial uptime with operator-friendly knife positioning and flexible shaft configurations.
Caractéristiques / spécifications techniques- Model name: WSL
- Manufacturer / brand: Crest
- Pneumatic circular slitting (crush-cut) with rapid changeover
- Loop-controlled center winding for deformation-free winding
- Optional inline Corona surface activation unit
- Dual-roller nip lamination system to avoid micro-air inclusions
- Supports single-pass and dual-pass lamination workflows (integrated laminator optional)
- Adjustable working widths (example: up to 1650 mm and beyond, depending on configuration)
- Capable of handling jumbo master rolls up to ø1200 mm diameter and up to 500 kg via center winding
- Flexible shaft handling with quick changeovers for 3-inch and 6-inch cores
- Designed for heavy-duty production environments and high uptime
- Warranty example noted on page: 5-year warranty when a service agreement is in place