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PP/PE Hollow Grid Board Extrusion Line — CX Series Twin-Wall Corrugated Plastic Sheet Production System

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Product Description

Product Overview

The CX Series Hollow Grid Board Extrusion Line by Chenxing Machinery is a fully automatic, high-output production system engineered for manufacturing PP, PE, and PC hollow grid boards — also widely known as corrugated plastic boards, twin-wall sheets, or hollow-structured polyolefin panels. These lightweight yet high-strength boards feature a distinctive grid-core architecture that delivers exceptional rigidity-to-weight performance, making them the preferred alternative to traditional cardboard, plywood, and metal sheet across industries ranging from construction and packaging to agriculture and signage.


Unlike conventional sheet extrusion lines that produce solid monolithic sheets, the CX series integrates a specialized multi-layer die head with precision-engineered flow channels to form the signature hollow grid structure directly from the melt phase. The result is a continuous, void-free production process that yields corrugated plastic boards with uniform cell geometry, consistent wall thickness, and outstanding surface finish — all within a single automated workflow.


This product page presents a comprehensive technical deep-dive into the CX series: four distinct models covering finished board widths from 1,300 mm to 2,100 mm and thicknesses from 1.5 mm to 60 mm, with maximum extrusion outputs ranging from 200 kg/h to 450 kg/h. Varying motor configurations (110–185 kW main drive) and material compatibility (PP, PE, PC) enable manufacturers to select the exact line configuration that matches their target market, whether producing thin packaging dividers, thick construction formwork panels, or UV-stabilized greenhouse sheets.


Built around a co-rotating twin-screw extruder with multi-zone electric heating and water-circulation temperature control, the CX series ensures melt homogeneity and thermal stability critical for the hollow grid formation process. This is complemented by a multi-layer composite die, cascade cooling and calibration stations, caterpillar haul-off, precision servo-driven cutting, and automatic stacking — all governed by an integrated PLC + HMI touchscreen control architecture that provides real-time monitoring of pressure, temperature, line speed, and board thickness at every production stage.


Manufacturers investing in a CX series extrusion line gain access to a production platform that combines versatility (one line can run PP, PE, and PC grades with die-insert changes), scalability (modular auxiliary stations for corona treatment, printing, and lamination), and export readiness (CE and ISO certification support). Whether you are expanding your corrugated plastic sheet capacity or entering the hollow-board market for the first time, the CX series delivers proven reliability backed by Chenxing Machinery's end-to-end engineering support.

multi-layer composite die head on CX12030 hollow grid board extruder producing 2100mm-wide PP corrugated sheet
PLC + HMI touchscreen control panel for CX series hollow grid board extrusion line with real-time temperature and speed monitoring display



Complete Production Line Layout

The CX Series hollow grid board extrusion line is a modular, fully integrated production system. Each functional station is engineered to work in synchronous coordination under centralized PLC control, ensuring uninterrupted continuous production from raw material feeding to finished board stacking.

Twin-Screw Extrusion & Multi-Layer Die — Hollow Grid Core Formation

At the heart of every CX series line lies a high-torque co-rotating twin-screw extruder configured with segmented screw elements optimized for PP, PE, or PC processing. Raw plastic granules — optionally pre-dried through a dehumidifying hopper system for hygroscopic materials like PC — are gravity-fed from the screw feeder / automatic feeding machine into the extruder barrel. The screw geometry, tailored with material-specific compression ratios and mixing/kneading zones, progressively conveys, melts, and homogenizes the polymer into a thermally uniform melt stream.

The extruder barrel features multiple independent heating/cooling zones using cast-aluminum heaters and water-jacket cooling circuits, regulated by PID controllers to maintain melt temperature within ±1°C tolerance. This thermal precision prevents polymer degradation while ensuring the melt viscosity is optimal for the downstream multi-layer die.

The melt then enters the multi-layer composite die head — the core differentiator of hollow grid board extrusion. Unlike simple slot dies used in standard sheet extrusion lines, the CX series die incorporates a network of internal mandrels and flow-distribution channels that split and recombine the melt stream into the characteristic grid-cell cross-section. For manufacturers requiring multi-color or multi-layer boards (e.g., a colored top skin over a white core for signage), the die accommodates co-extrusion feeders that laminate different melt streams within the die body itself, forming permanent interfacial bonds without adhesives.

Key die features include:

  • Adjustable lip gap for fine-tuning board thickness from 1.5 mm to 60 mm across models

  • Cartridge heater zones with independent thermocouple feedback to eliminate cold spots

  • Quick-change die inserts for switching between different grid geometries and cell sizes

  • Internal flow-channel polishing (Ra ≤ 0.2 μm) to minimize melt residence time and prevent charring

The combined extruder-and-die system is supported by an SML water-cooled chiller or SML air-cooled chiller to maintain consistent barrel and die cooling. For manufacturers also running PVC hot-cutting pelletizing lines or other extrusion processes in parallel, the chiller system can be centralized across equipment.


Cooling, Haul-off & Automatic Cutting/Stacking

Once the hollow grid board exits the die at melt temperature (typically 180–240°C depending on polymer grade), it passes immediately into a cascade cooling and calibration system designed to lock in the grid geometry without warping or cell collapse.

Stage 1 — Primary Cooling & Calibration:
The hot board enters a multi-zone spray-cooling tank or air-knife cooling bank, where precisely metered water or chilled air is applied to both board surfaces simultaneously. Vacuum calibration plates or precision roller stacks maintain flatness and thickness tolerances during the critical initial solidification phase, preventing the hollow cells from deforming under gravity or residual thermal stress.

Stage 2 — Haul-off:
The solidified board is gripped by a robust caterpillar haul-off machine equipped with synchronized top and bottom rubber-track belts. The haul-off speed is continuously variable and slaved to the extruder screw RPM via the PLC, ensuring constant line tension without stretching or compressing the board. Digital encoders on the haul-off rollers provide precise length measurement feedback to the downstream cutting station.

Stage 3 — Automatic Cutting:
An integrated photoelectric sensor or encoder-driven trigger activates the servo cutting unit. Depending on the model configuration, the cutting system employs either a flying saw (for high-speed thin-gauge production) or a guillotine shear (for thick boards up to 60 mm). The cutting length is programmable through the HMI in 1 mm increments, and the system automatically compensates for line-speed fluctuations to maintain cut-length accuracy within ±2 mm. Manufacturers familiar with dust-free pipe cutters will recognize the same precision servo control philosophy adapted for sheet applications.

Stage 4 — Automatic Stacking:
Cut boards are conveyed to a pneumatic or servo-driven stacking station that aligns and stacks finished sheets onto a pallet or roller conveyor. The stacking cycle is synchronized with the cutting cycle, and the stacking table automatically indexes downward as the stack height increases, maintaining a consistent drop height to prevent edge damage. For high-throughput operations, dual-station stackers enable non-stop production with pallet changeover.



Technical Specifications

The CX series comprises four models covering distinct production envelopes. The dual-motor notation (e.g., 185 kW / 22 kW) on CX120/38_JW45/30 and CX100/38_JW45/30 denotes the main extruder drive power and the auxiliary system drive power (cooling, haul-off, and ancillaries) respectively.

Parameter CX120/38_JW45/30 CX100/38_JW45/30 CX120/30 CX120/33
Applicable Materials PC PC PP, PE PP, PE
Board Width (mm) 2,100 1,300 2,100 1,300
Board Thickness (mm) 2 – 40 2 – 10 2 – 60 1.5 – 8
Main Motor Power (kW) 185 / 22 132 / 22 132 110
Max. Extrusion Output (kg/h) 450 300 350 200
Extruder Type Co-rotating Twin-Screw Co-rotating Twin-Screw Co-rotating Twin-Screw Co-rotating Twin-Screw
Die Type Multi-Layer Composite Multi-Layer Composite Multi-Layer Composite Multi-Layer Composite
Cooling Method Spray / Air-Knife Spray / Air-Knife Spray / Air-Knife Spray / Air-Knife
Cutting System Servo Saw / Shear Servo Saw / Shear Servo Saw / Shear Servo Saw / Shear
Control System PLC + HMI Touchscreen PLC + HMI Touchscreen PLC + HMI Touchscreen PLC + HMI Touchscreen
Warranty 12 Months 12 Months 12 Months 12 Months

Model Selection Guidance:

  • CX120/33 (PP/PE, 1,300 mm width, 1.5–8 mm thickness): Entry-level configuration optimized for thin-gauge packaging boards and lightweight signage sheets. Ideal for manufacturers entering the corrugated plastic board market with moderate volume requirements.

  • CX120/30 (PP/PE, 2,100 mm width, 2–60 mm thickness): High-capacity PP/PE line with the broadest thickness range in the series. Covers everything from thin dividers to heavy-duty construction formwork panels and industrial packaging.

  • CX100/38_JW45/30 (PC, 1,300 mm width, 2–10 mm thickness): Compact PC-specialized line for high-clarity, UV-resistant sheets used in greenhouse glazing, skylights, and architectural applications.

  • CX120/38_JW45/30 (PC, 2,100 mm width, 2–40 mm thickness): Flagship PC line offering maximum width and output for large-format polycarbonate hollow sheets used in premium construction, stadium roofing, and daylighting systems.

For manufacturers running both PP/PE corrugated sheet and other plastic extrusion products — such as PP formwork extrusion lines or reinforced pipe production lines — Chenxing offers integrated factory planning to optimize shared utilities (chillers, material handling, and electrical infrastructure) across multiple extrusion lines.



Key Features

1. Superior Surface Finish — Smooth, Bubble-Free, and Impurity-Free

The CX series is engineered to deliver corrugated plastic boards with a mirror-smooth surface free of bubbles, flow marks, and impurities. This is achieved through (a) precision melt filtration at the extruder breaker-plate stage, (b) vacuum venting on the twin-screw barrel to remove volatiles and moisture, and (c) highly polished die-lip surfaces (Ra ≤ 0.1 μm) with optimized land-length geometry. The result is a finished board surface that requires no post-processing before printing, laminating, or direct use in visible applications.


2. Exceptional Compressive Strength — Grid Architecture for Load-Bearing Applications

The hollow grid core structure functions as a 3D truss network, distributing compressive loads efficiently across the board cross-section. Independent laboratory testing on CX-series-produced PP boards (4 mm thickness, standard grid) demonstrates compressive strengths exceeding 1.2 MPa in the through-thickness direction. This makes CX-series boards suitable for heavy-duty packaging applications — including pallet liners, machinery crate separators, and load-spreading dunnage — where traditional corrugated cardboard would buckle under load.


3. Lightweight Design with High Structural Rigidity

Compared to solid plastic sheets of equivalent thickness, hollow grid boards produced on the CX series achieve 40-60% weight reduction while retaining over 80% of the bending stiffness. For end users, this translates to lower shipping costs, easier on-site handling, and reduced material consumption. In logistics and construction applications where weight directly impacts operational cost, the weight-to-strength advantage of CX-series hollow grid boards delivers measurable ROI improvements for both the sheet manufacturer and the downstream customer.


4. Outstanding Process Stability for Continuous 24/7 Production

The CX series incorporates multiple layers of process stabilization: (a) closed-loop PID temperature control with adaptive tuning across all barrel and die zones, (b) automatic die-centering feedback via melt-pressure transducers at the die entry, (c) high-efficiency cascade cooling with independently adjustable zone flow rates, and (d) haul-off tension control that dynamically compensates for minor melt-viscosity variations. These systems work in concert to maintain consistent board dimensions and mechanical properties across multi-shift, continuous production runs.


5. Multi-Material Compatibility — PP, PE, and PC on a Single Platform

The CX series extruder and die system supports PP (homopolymer and copolymer), HDPE, LDPE, and PC grades with minimal changeover. Switching between materials typically requires only (a) purging the barrel with the new material or a transition compound, (b) swapping or adjusting die inserts if the target grid geometry differs, and (c) updating temperature and speed setpoints on the PLC recipe manager. This material flexibility allows manufacturers to serve diverse market segments — packaging (PP/PE), construction (PP), agriculture (PE), and glazing (PC) — from a single production asset, maximizing equipment utilization and ROI.


6. Wide Width and Thickness Coverage Across Four Models

The CX series collectively covers finished board widths from 1,300 mm to 2,100 mm and thicknesses from 1.5 mm to 60 mm, making it one of the most versatile hollow grid board extrusion line portfolios available from a single manufacturer. Thin-gauge boards (1.5–3 mm) serve the signage, stationery, and light packaging markets. Mid-gauge boards (4–12 mm) dominate the industrial packaging, furniture panel, and agricultural sectors. Heavy-gauge boards (15–60 mm) target construction formwork, temporary road mats, and structural panel applications that traditionally relied on plywood or steel.


7. Full-Automation PLC Control — One-Touch Operation with Fault Diagnostics

The CX series is controlled through a Siemens or Mitsubishi PLC (depending on export region) paired with a 10-inch or larger color HMI touchscreen. The control architecture provides: (a) one-touch start/stop with automated warm-up and shutdown sequencing, (b) real-time multi-parameter trending (barrel temperature, melt pressure, line speed, board thickness) with data logging to USB or Ethernet for QC traceability, (c) tiered alarm management with on-screen troubleshooting guidance for common fault conditions, and (d) recipe storage for up to 100 product configurations, enabling rapid changeover between different board thicknesses, widths, and material grades. This level of automation reduces operator dependency and training requirements while improving production consistency.


8. Environmentally Responsible Production — Zero Toxic Emissions and Full Waste Recyclability

The CX series hollow grid board process is inherently clean: PP, PE, and PC are melt-processed without solvents, plasticizers, or chemical additives that could produce volatile organic compound (VOC) emissions. Production scrap — edge trim, startup sheets, and off-spec boards — can be fully recycled. Chenxing offers an integrated closed-loop regrind system combining a plastic crusher and a disc grinding pulverizer to process production waste back into reusable granules, which can be blended with virgin material at controlled ratios without compromising board quality.


9. Flexible Customization — Grid Geometry, Cell Size, and Multi-Layer Construction

The CX series die system supports extensive customization to meet specific end-use requirements. Manufacturers can specify: (a) cell size and wall thickness variations within the grid cross-section, (b) solid-surface skins co-extruded over the grid core for printing or aesthetic requirements, (c) UV-stabilized outer layers for outdoor durability, (d) anti-static or flame-retardant additive packages, and (e) embossed or textured surface finishes applied in-line. Chenxing's engineering team works with customers during the pre-sale phase to define the optimal die and screw configuration for their target product portfolio.


10. CE/ISO Certification Support for Global Export Compliance

All CX series extrusion lines are designed and documented to meet CE marking requirements (EU Machinery Directive 2006/42/EC) and ISO 9001 quality management system standards. Chenxing provides the full technical file — including risk assessments, electrical schematics, hydraulic/pneumatic diagrams, and declaration of conformity — to support customers' import clearance and regulatory compliance in their target markets. For customers requiring region-specific certifications (UL, CSA, GOST-R, etc.), the engineering team can adapt electrical and safety systems accordingly during the pre-production engineering phase.



How It Works — Hollow Grid Board Extrusion Process

The CX series transforms raw PP, PE, or PC granules into finished hollow grid boards through a seven-stage continuous process, fully automated under PLC supervision.

Stage 1: Raw Material Feeding and Conditioning

Plastic granules are loaded into the feed hopper — either manually or via a screw feeder / automatic feeding machine for continuous bulk supply. For PC production or in high-humidity environments, an optional desiccant dehumidifying dryer pre-conditions the granules, reducing moisture content below 50 ppm to prevent hydrolytic degradation during melt processing. A high-speed mixer can be integrated upstream for blending color masterbatch, UV stabilizers, or recycled regrind with virgin material before feeding.


Stage 2: Twin-Screw Plasticization and Melt Homogenization

The granules enter the co-rotating twin-screw extruder barrel, where intermeshing screws convey the material through a series of functional zones: solids conveying → compression and melting → intensive mixing/kneading → metering and pressure build-up. Barrel heating (electric resistance heaters with cast-aluminum jackets) provides the initial energy input, while shear heating from screw rotation completes the melting process. Vacuum venting ports downstream of the melting zone extract residual moisture and volatiles, ensuring a bubble-free melt.


Stage 3: Multi-Layer Die Extrusion — Hollow Grid Formation

The homogenized melt is forced through the multi-layer composite die at pressures typically ranging from 8 to 25 MPa, depending on material viscosity and throughput. Within the die body, a system of internal mandrels, flow splitters, and converging channels shapes the melt into the hollow grid cross-section. The die design ensures uniform flow distribution across the full board width — a critical factor in achieving consistent cell size and wall thickness from edge to edge. For multi-layer products, satellite extruders feed secondary melt streams into the die's co-extrusion ports, where they are laminated with the core layer under pressure.


Stage 4: Cooling and Calibration — Solidifying the Grid Structure

The molten board emerging from the die enters the cascade cooling system. Spray nozzles or air knives deliver controlled cooling medium to both surfaces, extracting heat rapidly enough to freeze the grid geometry without inducing thermal shock that could cause warping. Vacuum calibration plates or precision roller stacks, positioned in the initial cooling zone, maintain board flatness and thickness during the critical glass-transition phase. Cooling water is circulated through an SML water-cooled chiller or industrial chiller to maintain consistent water temperature regardless of ambient conditions.


Stage 5: Haul-off — Constant-Tension Board Conveyance

The solidified board is pulled through the line by a caterpillar haul-off machine with synchronized upper and lower rubber-track belts. The haul-off speed is a master control variable in the PLC system: it is set according to the target production rate and maintained with closed-loop feedback from a digital encoder on the drive motor. Smooth, pulsation-free conveyance is essential to prevent surface marking and thickness variation.


Stage 6: Automatic Cut-to-Length

The integrated servo cutting station receives length-setpoint commands from the PLC HMI and triggers the cut cycle based on encoder feedback from the haul-off station. The system compensates for line-speed variations to ensure cut-length accuracy within ±2 mm regardless of production speed. Off-cut boards are automatically conveyed forward to the stacking station. For thin-gauge, high-speed production, a rotary flying saw ensures clean, burr-free cuts without slowing the line.


Stage 7: Automatic Stacking and Palletizing

Finished boards are aligned and stacked by a pneumatic or servo-driven stacker. The stacking table indexes downward incrementally as each board is added, maintaining a consistent drop height to prevent edge damage. Once the pre-set stack count is reached (configurable via HMI), an audible/visual alert prompts the operator to remove the completed stack. For high-volume operations, a dual-station stacker configuration allows non-stop production with seamless pallet changeover.

Finished PP hollow grid boards stacked on automatic palletizing station
Cross-section detail of PP hollow grid board showing uniform cell geometry, consistent wall thickness, and smooth surface produced by CX series line



End-Product Applications & Markets

Hollow grid boards produced on the CX series extrusion line serve as a high-performance alternative to corrugated cardboard, plywood, MDF, and sheet metal across a wide spectrum of industries. The material's inherent advantages — waterproof, chemical-resistant, lightweight, impact-resistant, and 100% recyclable — make it the material of choice wherever traditional substrates fail under moisture, load, or durability requirements.

Construction & Building Materials

CX-series hollow grid boards are extensively used in construction as:

  • Interior partition panels and room dividers — lightweight and easy to install without heavy framing

  • Skylight and daylighting panels (PC grades) — UV-stabilized for long-term outdoor exposure

  • Acoustic wall panels — grid structure combined with perforations provides sound absorption

  • Decorative cladding and ceiling tiles — paintable and printable surfaces

  • Green building components — contributing to energy efficiency through thermal insulation from the air-filled cells

  • Concrete formwork panels (thick PP boards, 15–40 mm) — reusable, non-stick surface, and moisture-impermeable, directly replacing plywood formwork


Industrial & Protective Packaging

The packaging industry is the largest single market for corrugated plastic boards. Compared to cardboard, CX-series-produced PP/PE hollow grid sheets offer:

  • Waterproof and moisture-proof performance — no loss of structural integrity in humid or wet environments

  • Chemical resistance to oils, solvents, mild acids, and alkalis

  • Reusability over dozens or hundreds of cycles vs. single-use cardboard

  • Custom die-cut shapes for precision-fit liners and dividers

Typical packaging applications include:

  • Heavy machinery export crate liners and protective separators

  • Automotive parts dunnage, returnable pallet sleeves, and tier sheets

  • Electronics and appliance interleaf boards with anti-static treatment

  • Fresh produce and seafood transport boxes (food-grade PP)

  • E-commerce protective mailers and rigid envelopes


Signage, Display & Advertising

The smooth, printable surface of CX-series hollow grid boards makes them ideal for:

  • Outdoor signage and real estate boards — weather-resistant and UV-stabilized

  • Exhibition and trade-show display panels — lightweight for easy transport and setup

  • Point-of-purchase (POP) displays and retail shelf signage

  • Screen-printed and digitally printed advertising boards

  • Election campaign signage (short- to medium-term outdoor use)


Agriculture & Horticulture

In the agricultural sector, hollow grid polyolefin sheets produced on the CX series are used for:

  • Greenhouse cladding and end-wall panels (PP and PC grades with UV stabilization)

  • Nursery tray dividers and plant propagation benches

  • Livestock pen partitions and poultry-house lining — easy to clean and sanitize

  • Silage covers and temporary crop protection panels

  • Hydroponic tray bases and growing-medium support boards


Logistics & Warehousing

The logistics sector benefits from hollow grid boards as:

  • Warehouse rack decking and shelving panels — replacing steel or wood at lower cost and weight

  • Mezzanine floor infill panels in automated storage and retrieval systems (AS/RS)

  • Partition walls for temperature-controlled cold storage zones

  • Dunnage platforms and load-stabilization sheets in containerized shipping

  • Reusable pallet top-decks and slip sheets


Education, Furniture & Institutional

Hollow grid boards find growing application in institutional settings:

  • Student desk and laboratory table surfaces — chemical-resistant and easy to clean

  • Library shelf dividers and bookend panels

  • Playground and daycare partition panels — non-toxic, rounded-edge safe

  • Modular furniture components for schools and offices


Additional Niche Applications

Beyond the mainstream markets, CX-series hollow grid boards have been deployed in:

  • Automotive interior panels and trunk liners (lightweight PP boards)

  • Marine bulkhead panels and boat cabin dividers (moisture-proof)

  • Sports equipment — gym mat bases, scoreboard panels

  • Disaster relief — temporary shelter panels, field-hospital partitions

The market opportunity for hollow grid board manufacturers is substantial and growing, driven by global trends toward circular-economy packaging, lightweight construction materials, and plastic-waste reduction through reusable product design. A CX series extrusion line positions manufacturers to capture demand across all these segments from a single production platform.



Why Choose Chenxing Machinery CX Series Grid Board Lines

End-to-End Engineering, Not Just Equipment Sales

Chenxing Machinery approaches every CX series project as a partnership. From initial material trials and die-design consultation through factory commissioning and operator training, our engineering team is embedded in your project. We do not ship a container of components and walk away — we ensure your line achieves nameplate output, board quality specifications, and production stability before project sign-off.


Proven Technology with Modular Flexibility

The CX series is built on proven twin-screw extrusion and multi-layer die technology refined over hundreds of installed sheet extrusion lines and pipe extrusion lines. Its modular auxiliary station design means you can start with a baseline configuration and add corona treatment, printing, lamination, or automated palletizing as your market grows — without replacing core equipment.


Integrated Factory Ecosystem

Chenxing manufactures the full range of upstream and downstream equipment needed for a complete hollow grid board factory, including plastic crushers, disc grinding pulverizers / SMF pulverizers, plastic grinding machines, high-speed mixers, ZSQ vibrating screens, screw feeders, plastic pelletizers, and chillers. Procuring the complete line from a single manufacturer eliminates integration risk, simplifies after-sales support, and often reduces total project cost through bundled pricing.


Global Export Readiness

Chenxing Machinery has supplied extrusion lines to customers across Asia, the Middle East, Africa, Eastern Europe, and Latin America. Every CX series line ships with CE-compliant documentation, English-language manuals, electrical schematics, and a comprehensive spare-parts list. Our pipe belling machine, pipe coiler, and dust-free pipe cutter product lines have established our reputation for reliable, export-ready equipment — and the CX series continues that tradition.


After-Sales That Keeps You Running

Post-commissioning support includes remote diagnostics via VPN connection to the PLC, rapid spare-parts dispatch from our Zhangjiagang warehouse, and optional on-site service visits for preventive maintenance or production troubleshooting. We understand that a stopped extrusion line costs our customers money, and we prioritize response times accordingly.



Frequently Asked Questions

1. What is the difference between a hollow grid board and a standard corrugated plastic sheet?

A hollow grid board and a corrugated plastic sheet refer to the same product category — lightweight, twin-wall polyolefin panels with internal structural ribs. The term "hollow grid board" emphasizes the 3D grid-core architecture (intersecting vertical and horizontal ribs forming rectangular or square cells), while "corrugated plastic sheet" is the broader industry term that can also encompass single-wall fluted sheets (like those used in yard signs). The CX series produces true hollow grid boards with a closed-cell cross-section that delivers higher compressive strength and better thermal insulation than open-flute corrugated sheets. If you are evaluating whether a CX series line is right for your target product, Chenxing's application engineers can help you benchmark your board specifications against the line's capabilities.


2. Can I produce both PP and PC hollow boards on the same CX series line?

Yes, with caveats. The CX120/30 and CX120/33 are optimized for PP and PE processing. Running PC on these models is theoretically possible but not recommended for sustained production because PC requires higher processing temperatures (260–300°C vs. 180–240°C for PP), different screw geometry to manage its higher viscosity and shear sensitivity, and pre-drying equipment to prevent hydrolytic degradation. The CX120/38_JW45/30 and CX100/38_JW45/30 are purpose-built for PC, with corrosion-resistant screw and barrel materials, enhanced venting, and higher-capacity cooling. If you need to run both PP and PC on a single line, Chenxing can configure a hybrid model with appropriate material-handling, screw, and temperature-control specifications — contact our engineering team for a detailed feasibility assessment.


3. What support do you provide for die design if I need a custom grid geometry?

Chenxing's in-house die-design team uses computational flow simulation (CFD) to model melt-flow behavior through proposed grid geometries before machining the die. The process works as follows: you provide your target board specifications (cell size, wall thickness, rib pattern, layer structure), and our engineers develop a preliminary die design. Flow simulation identifies potential issues — such as uneven flow distribution leading to thickness variation or weld lines in the grid — and the design is iterated before manufacture. A custom die typically adds 4–8 weeks to the production lead time compared to a standard die configuration. We also recommend a factory-acceptance trial with your target material to validate board quality before shipment.


4. How does the CX series compare to European or Japanese hollow board extrusion lines in terms of performance and price?

The CX series is positioned as a high-value alternative to premium European and Japanese brands. In terms of core performance metrics — output rate per kW, board thickness tolerance, surface finish quality, and continuous-run stability — the CX series is competitive with mid-to-upper-tier European lines at a significantly lower capital cost, typically 40–60% less for equivalent specifications. The trade-off is primarily in areas like cosmetic fit-and-finish of the machine frame and enclosures, which do not affect production performance but reflect the cost difference. Chenxing uses globally recognized brand components for critical subsystems: Siemens or Mitsubishi PLCs, Schneider or ABB electrical components, Nord or SEW gearmotors, and SKF or NTN bearings. This ensures reliability and serviceability while avoiding the brand premium of a fully European-assembled machine. For manufacturers seeking a strong price-performance ratio with reliable after-sales support, the CX series represents a compelling option.


5. What are the utility requirements for installing a CX series hollow grid board line?

Utility requirements vary by model but typical specifications for a CX120/30 line (the most popular configuration) are:

  • Electrical supply: 380V, 50Hz, 3-phase (adaptable to 400V/415V/440V/480V, 50/60Hz for export markets)

  • Installed power: approximately 180 kVA (including extruder, haul-off, cut-off, stacker, and auxiliaries)

  • Cooling water: 15–25 m³/h closed-loop circulation at 15–25°C, supplied by the included SML water-cooled chiller

  • Compressed air: 0.6–0.8 MPa, approximately 1 m³/min for pneumatic actuators and air knives

  • Floor space: approximately 35 m (length) × 6 m (width) for the complete line; additional space needed for raw material storage, finished goods, and operator walkways

  • Foundation: Reinforced concrete floor capable of supporting 2–3 tonnes per linear meter of machine length

Chenxing provides detailed foundation drawings, utility connection diagrams, and a pre-installation checklist 4–6 weeks before shipment to ensure your factory is ready for line installation.


6. What is the typical lead time and installation schedule for a CX series extrusion line?

Standard lead time is 90–120 days from confirmed order and receipt of advance payment, depending on current production queue and die complexity (custom dies may extend this by 4–8 weeks). Installation and commissioning follow this typical schedule:

  • Days 1–3: Unloading and positioning of main line components at customer factory

  • Days 4–7: Mechanical assembly, utility connections, and electrical wiring

  • Days 8–10: Cold commissioning — PLC I/O checks, safety circuit verification, motor rotation tests, water and air system leak checks

  • Days 11–14: Hot commissioning — heating system ramp-up, extruder and die purging, initial board production trials

  • Days 15–18: Process optimization — achieving target board quality and output rate with customer's production material

  • Days 19–20: Operator training (2–3 operators), maintenance training, and handover documentation

Chenxing provides 1–2 commissioning engineers on-site for the full installation and commissioning period. Travel, accommodation, and per-diem costs for the engineers are quoted separately. After commissioning, remote support via WeChat/WhatsApp video call and VPN-based PLC diagnostics remains available throughout the warranty period and beyond.



Inquiry & Quotation — Start Your Hollow Grid Board Production Journey

Ready to explore how a CX series hollow grid board extrusion line can transform your manufacturing capabilities? Our four-step inquiry process is designed to deliver an accurate, comprehensive quotation with minimal back-and-forth.

Step 1: Define Your Requirements

Tell us your target product specifications — material (PP, PE, PC, or multi-material), board width range, thickness range, desired output capacity, and any special requirements (multi-layer, UV stabilization, anti-static, custom grid geometry). If you have samples of the board you want to produce, photos and dimensions are extremely helpful.


Step 2: Receive Your Tailored Quotation

Within 2–3 business days, our engineering team will review your requirements and provide a detailed quotation including: recommended CX series model, complete line configuration with auxiliary equipment options, technical specification datasheet, estimated shipping dimensions and weights, payment terms, and delivery timeline.


Step 3: Engineering Review & Factory Visit (Optional)

We encourage prospective buyers to visit our manufacturing facility in Zhangjiagang, Jiangsu Province, China. You can witness a CX series line in operation, inspect build quality firsthand, and discuss custom die design with our engineering team. For customers unable to travel, we offer live video walkthroughs of the factory and reference installations.


Step 4: Order Confirmation & Production Kick-off

Upon order confirmation, we initiate the engineering submittal process: detailed plant-layout drawings, utility specifications, electrical single-line diagrams, and a Gantt-chart project schedule. Your dedicated project manager will provide monthly progress updates with photos from our production floor until the line is ready for factory acceptance testing and shipment.

Contact Nicole today to begin your inquiry:

  • Contact Person: Nicole

  • Phone / WhatsApp: +86 15951187228

  • Email: ceo@cxsljx.com

  • Company: Zhangjiagang Chenxing Machinery Co., Ltd.

  • Website: www.chenxingmachinery.com

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