SHJP-C Roll Inspection Machine | Multi-Functional Defect Detection, Marking, Edge Trimming & Rewinding

SHJP-C Inspection Machine Main parameters：

Integrated Defect Detection, Marking, Edge Trimming & Rewinding

Unlike single-function inspection equipment, the SHJP-C combines four critical post-finishing processes in one machine. Operators can detect surface defects, mark them for removal, trim edges to specification, and rewind the cleaned roll—all without transferring material between stations. This integrated workflow reduces handling damage, saves floor space, and cuts labor costs.

Surface Defect Detection

The machine inspects roll surfaces for bubbles, wrinkles, scratches, coating gaps, and inclusions. An optional high-precision intelligent vision system enables fully automatic defect identification, positioning, and traceability recording via computer—eliminating the missed inspections and misjudgments inherent in manual quality control.

Defect Marking & Material Removal

Dedicated material receiving platforms at both ends allow operators to mark defects, splice materials, and change rolls quickly. Defective sections are flagged and removed efficiently, ensuring only qualified material reaches the finished roll.

Precision Edge Trimming

The optional precision edge trimming function processes material edges to make them flat and smooth, significantly optimizing downstream converting results. Trimmed edges reduce waste in subsequent slitting, printing, and lamination operations.

Rewinding & Flatness Control

The rewinding module applies controlled tension to flatten rolls and eliminate telescoping, starring, or sagging. Proper rewinding tension ensures rolls are ready for immediate use in downstream processing or direct shipment to customers.

Shaftless Hydraulic Unwinding & Rewinding Structure

The SHJP-C adopts a full shaftless hydraulic clamping design for both unwinding and rewinding stations. This structure delivers stable loading, high load capacity, and significantly reduced manual workload during roll changes. The hydraulic system accommodates roll diameters up to 800 mm as standard, with larger diameters available upon customization.

High Load Capacity & Stable Operation

Shaftless hydraulic chucks grip rolls securely across the full width, distributing clamping force evenly. This prevents core deformation and supports heavy jumbo rolls without vibration, enabling stable 24-hour continuous production.

Labor-Saving Roll Loading & Unloading

Without the need for expansion shafts, operators load and unload rolls faster with less physical effort. The hydraulic clamping system automatically centers rolls, reducing setup time between production runs.

Optional Intelligent Vision Inspection System

For manufacturers requiring automated quality assurance, the SHJP-C can be equipped with a high-precision intelligent vision inspection system. This add-on enables real-time, computer-aided defect detection that surpasses manual inspection in both accuracy and consistency.

Automatic Defect Identification & Positioning

The vision system scans the full web width at production speed, automatically identifying defects by type, size, and location. Defect data is logged with meter position for full traceability, supporting ISO and customer audit requirements.

Traceability Recording & Quality Reports

Every inspected roll generates a digital quality report with defect maps, statistics, and pass/fail criteria. This data integrates with factory MES and ERP systems for end-to-end quality management.

EPC Web Guiding & PLC Intelligent Control

A high-sensitivity photoelectric EPC (Edge Position Control) system prevents material deviation throughout operation, ensuring neat rewinding and stable running. The Siemens PLC control module manages automatic meter counting, residual material detection, alarm shutdown, preset-length auto stop, and reverse rewinding.

±0.1 mm EPC Guiding Precision

The photoelectric sensor continuously monitors edge position and corrects deviation in real time, maintaining ±0.1 mm guiding accuracy even at maximum speed. This precision prevents telescoping and ensures consistently straight rolls.

Auto Meter Counting & Preset-Length Stop

The PLC intelligent meter counter tracks roll length with high accuracy. Operators can set target lengths for automatic shutdown, enabling unattended production runs and reducing material waste from over-rolling.

SHJP-C Inspection Machine Technical Specifications

Three standard working widths are available to match common roll sizes. All models share the same maximum operating speed (10–400 m/min), EPC precision (±0.1 mm), and maximum roll diameter (800 mm). Custom widths and roll diameters are available upon request.

SHJP-C 1100mm Model — Standard Width Base Configuration

Working width: 1100mm | Power: 18 kW | Weight: 2,300 kg | Overall dimension: 2100 × 2700 × 2100 mm. Ideal for narrow-to-medium roll inspection without vision system. Best entry-level price point at $22,800 USD.

SHJP-C 1300mm Model — Medium Width with Vision Upgrade

Working width: 1300mm | Power: 22 kW | Weight: 2,500 kg | Overall dimension: 2100 × 2900 × 2100 mm. Supports optional vision inspection system for automated defect detection. Priced at $29,500 USD.

SHJP-C 1600mm Model — Wide Format Full Configuration

Working width: 1600mm | Power: 25 kW | Weight: 2,700 kg | Overall dimension: 2100 × 3200 × 2100 mm. Full configuration with vision system compatibility for wide-format roll quality control. Priced at $36,500 USD.

Compatible Materials & Industry Applications

The SHJP-C inspection machine processes a wide range of rolled materials, making it suitable for multiple industries including flexible packaging, printing, label manufacturing, and technical textiles. Its strong compatibility and flexible customization options meet the processing demands of rolls in various specifications.

Plastic Film Inspection

Compatible with BOPP, CPP, PE, PET, PVC, and other plastic films. The machine detects coating defects, thickness variations, and surface contamination that affect downstream printing and lamination quality.

Paper Roll Inspection

Processes paper rolls including coated art paper, kraft paper, and specialty papers. Identifies wrinkles, tears, and splice defects before converting into finished products.

Self-Adhesive Label Material Inspection

Inspects self-adhesive laminates for adhesive voids, liner wrinkles, and die-cut defects. Edge trimming ensures clean release liner edges for smooth label dispensing.

Nonwoven Fabric Roll Inspection

Quality control for nonwoven fabric rolls used in hygiene products, medical supplies, and industrial applications. Detects fabric unevenness, holes, and contamination.

Why Choose Sanhui SHJP-C Inspection Machine

Sanhui Machinery brings years of expertise in roll converting and quality control equipment. The SHJP-C reflects our commitment to intelligent manufacturing, combining robust mechanical design with advanced control systems. Key advantages include: 4-in-1 integrated functionality, shaftless hydraulic operation, optional AI vision inspection, ±0.1 mm EPC precision, PLC automated control, and customizable specifications. Backed by comprehensive after-sales support and global export experience, the SHJP-C is the ideal inspection solution for enterprises seeking to strictly control quality, cut costs, and boost production efficiency.

Frequently Asked Questions About SHJP-C Inspection Machine

What materials can the SHJP-C inspection machine process?

The SHJP-C is compatible with plastic film (BOPP, CPP, PE, PET, PVC), paper rolls, self-adhesive label materials, and nonwoven fabric rolls. Custom configurations are available for specialty materials.

What is the maximum inspection speed of the SHJP-C?

The maximum operating speed is 400 m/min, with an adjustable range of 10–400 m/min to suit different material types and inspection requirements.

Does the SHJP-C support automatic defect detection?

Yes. An optional intelligent vision inspection system enables fully automatic defect identification, positioning, and traceability recording via computer, eliminating manual missed detection.

What working widths are available for the SHJP-C?

Three standard widths are offered: 1100mm, 1300mm, and 1600mm. Custom working widths and special roll diameters (up to 800mm standard, larger upon request) are available.

What is the EPC guiding precision of the SHJP-C?

The high-sensitivity photoelectric EPC system maintains ±0.1 mm guiding precision throughout operation, ensuring neat rewinding and stable material tracking.