I. Core Application Areas
The multi-layer composite hot press is a key piece of equipment for mass-producing parts made from multiple materials. Combining the "stability of its four-column structure," the "efficiency of its multi-layer heating plates," and the "reliability of high-precision control," it is widely used in the following industries:
1. Man-made Board and Wood Processing Industry (Core Applications)
As the mainstream press in the engineered wood panel industry—officially known as the "Multi-layer Heating Hydraulic Press"—this machine is primarily used for applying pressure and heat to multiple board blanks, enabling the production of fundamental engineered wood products such as plywood, fiberboard, and particleboard. It can also be employed in advanced wood processing applications, including mold-pressing to create curved wood furniture components like chair backrests and sofa armrests, custom-designed decorative wood items such as wardrobe door panels and intricate floor patterns, as well as architectural wood elements like roof trusses and wall cladding boards. Its "multi-layer" design allows simultaneous processing of multiple board blanks, significantly boosting the efficiency of engineered wood production—for instance, an 8-layer hot press can achieve a capacity 6 to 8 times greater than that of a single-layer machine.
2. Composite Material Molding (Core Equipment for High-End Manufacturing)
For the molding needs of thermoset/thermoplastic composite materials such as carbon fiber, glass fiber, SMC/BMC, used in the production of:

• Aerospace: Aircraft wing structural components, missile launch compartments, and helicopter transmission shafts (requiring high strength and high-temperature resistance);
• New Energy and Automotive: New energy vehicle body frames, battery pack housings, and engine soundproofing panels (requiring lightweight design and impact resistance);
• Sports equipment: golf club heads, carbon fiber rackets, and skis (requiring high modulus and precise molding).

Through "high-precision temperature and pressure control," we ensure uniform resin flow in composite materials, consistent fiber orientation, and prevent delamination or air bubbles. (For example, the curing and molding of carbon fiber prepregs require strict temperature control between 120–180°C and pressure ranging from 5 to 15 MPa.)
3. Plastics and the 3C Electronics Industry
For thermal pressing of plastic sheets, veneer panels, and structural components for 3C products:

• Plastic Processing: Manufacturing plastic veneer panels (such as exterior panels for refrigerators and washing machines), PVC flooring, and PETG transparent sheets (requiring superior surface finish and dimensional accuracy);
• 3C Electronics: Manufacturing mobile phone back covers (such as PC+PMMA composite panels), VR/AR helmet casings, and TWS earphone back covers (requiring lightweight, aesthetically pleasing, and scratch-resistant properties);
• Membrane switches: Used for forming key caps on mobile phones and remote controls (e.g., the "membrane switch bulging" mentioned in Document 6), requiring precise control of pressure (to prevent membrane rupture) and temperature (to ensure adhesive curing).

4. Other Industries

• Home appliance industry: Manufacturing plastic components such as air conditioner casings and microwave oven door panels;
• Construction Industry: Developing new eco-friendly building materials (such as fiber cement boards and wood-plastic composite panels) that meet performance requirements like water resistance and fire protection.

II. Core Features (The Combined Advantages of High Precision + Four-Column Design + Multi-Layer Structure)
1. Four-column structure: High stability and repeat accuracy
The machine employs a four-column, three-beam structure (with the middle beam designed as a movable slider), where the four columns are precisely fitted with linear guide sleeves to ensure smooth slider movement—eliminating uneven loading or shaking. Paired with high-precision displacement sensors and servo-adjusted limit switches, the system achieves a repeat positioning accuracy of up to **±0.02mm** (as mentioned in Document 2: "Servo-adjusted limit distance delivers exceptional repeat positioning accuracy"), perfectly meeting the dimensional requirements for complex-shaped components, such as smartphone back covers.
2. Multi-layer hot press plates: Ensuring efficiency in mass production
Composed of multiple hot-press plates (typically 4 to 16 layers), this system can simultaneously apply pressure and heat to multiple sets of board blanks, significantly boosting production capacity— for instance, a 10-layer hot press machine can produce 30 to 40 sets of board blanks per hour. Some equipment is equipped with automatic plate-handling systems (as mentioned in Document 5: "Hot presses with more layers and larger dimensions are usually fitted with loading/unloading machines"), enabling fully automated "loading—forming—unloading" processes and reducing labor costs.
3. High-Precision Parameter Control: The Core Guarantee of Product Quality

• Temperature Control: The heating plate is precision-ground using imported tool steel (heating deformation less than 0.1mm), and features intelligent PID control, enabling adjustable temperatures ranging from room temperature up to 300°C with a temperature accuracy of ±2°C (as noted in Document 2: "uniform heating with temperature control accuracy of ±2°C"). It also supports segmented heating processes—such as "preheating, heating, and pressure holding"—to accommodate the unique curing characteristics of various resins. For instance, epoxy resin requires maintaining 150°C for 30 minutes.
• Pressure and Displacement Control: Utilizing a servo-hydraulic system, the system achieves precise closed-loop control of both pressure (±0.1 MPa) and displacement (±0.01 mm)—as mentioned in Document 7, highlighting "stable pressure, high efficiency, and superior product yield." It also supports multi-stage pressure settings (e.g., "rapid pressurization—slow holding pressure—gradual depressurization"), preventing plastic sheet overflow or delamination in composite materials.

4. Smart and Flexible: Adaptable to Multi-Product Production

• Parameter Storage and Retrieval: Capable of storing over 100 sets of process parameters (such as mold number, temperature, pressure, and holding time). When switching products, simply recall the corresponding program to begin production—just as mentioned in Document 2: "Users can freely access and retrieve up to 100 parameter programs, eliminating the need for repetitive input."
• Touchscreen Control and Data Traceability: Equipped with a user-friendly touchscreen interface that displays real-time parameters such as pressure, temperature, and displacement; it can automatically generate production reports (e.g., output and yield) and supports data export in formats like Excel, making process optimization and quality traceability effortless.

5. Comprehensive Security Assurance

• Mechanical Safety: Equipped with a two-hand operation button (preventing accidental activation), an emergency stop button (for handling unexpected situations), and a pneumatic safety device (to prevent the upper die from falling).
• Optoelectronic Safety: Employs a highly sensitive through-beam photoelectric sensor (covering the equipment's opening area), which immediately shuts down the device when a human body or foreign object enters the hazardous zone.
• Mold Protection: Supports incremental movement of upper and lower dies (slow die adjustment), making mold installation and alignment easier (as mentioned in Document 1: "Equipped with incremental die movement for convenient mold installation and correction").

III. Application Analysis of Multi-layer Hot Press Molding in the Electronics and Electrical Fields
1. Major Composite Materials Products in the Electronics and Electrical Fields
The electronics and electrical sectors are a key market for composite material applications, particularly in areas such as 5G communications, smart wearables, and consumer electronics, where demand is rapidly growing for lightweight, high-strength composites with excellent signal penetration capabilities.
Products in the electronics and electrical fields that primarily utilize carbon fiber and glass fiber composites include:
5G communication equipment components:

• 5G phone back cover: Leveraging the lightweight, high-strength, and signal-penetrating advantages of carbon fiber composite materials.
• 5G base station antenna radomes: They must feature excellent electromagnetic wave penetration and weather resistance.
• Communication equipment enclosure: Requires lightweight, high strength, and a certain level of electromagnetic shielding performance.

Smart wearable devices:

• VR/AR device casings: Pursuing lightweight design, high strength, and comfort.
• Smartwatch and wristband structural components: require lightweight, high-strength materials.
• The rigid support structure of wearable devices: leveraging the high specific strength properties of carbon fiber.

Consumer electronics:

• Tablet backplate: Lightweight and high-strength design achieved through the use of carbon fiber or glass fiber composite materials.
• Laptop computer casing/base cover: Requires materials that are lightweight, high-strength, and offer excellent heat dissipation performance.
• TWS earphone back cover: Leveraging the lightweight, high strength, and signal-penetrating properties of fiberglass panels.

Other electronic components:

• Circuit board substrate: Requires a composite material with excellent insulation properties and dimensional stability.
• Electronic device internal support structure: Leveraging the lightweight and high-strength properties of composite materials.
• E-cigarette body: Pursuing lightweight design, high strength, and aesthetic appeal.

2. Characteristics of the Multi-layer Hot Press Molding Process for Electronic and Electrical Products
Composite material products in the electronics and electrical fields are mostly thin-walled structures, placing high demands on dimensional accuracy, surface quality, and signal penetration. Their multi-layer hot-pressing molding process has the following characteristics:
Temperature control requirements:

• Lower curing temperature: Typically between 120–200°C to prevent damage to electronic components.
• Precise temperature control: Temperature fluctuations must be kept within a narrow range, typically ±1–2°C, to ensure consistent material performance.
• Rapid temperature rise and fall requirements: To enhance production efficiency, equipment often needs to have the ability to quickly heat up and cool down.

Pressure control requirements:

• Moderate molding pressure: Typically ranges from 1 to 10 MPa (equivalent to approximately 10 to 100 tons of force), depending on the material and product design.
• Uniform pressure distribution: Ensures that all parts of the product experience even stress, preventing deformation or uneven density.
• Multi-stage pressure control: A multi-step pressurization process may be required, involving low-pressure impregnation followed by high-pressure shaping.

Vacuum level requirement:

• High-vacuum environment: Typically, the vacuum level is required to be within the range of 0.1–1 kPa (-0.1 to -0.095 MPa) to eliminate bubbles and enhance material density.
• Vacuum-assisted molding: Initiate vacuum during the pre-compression stage to reduce porosity and enhance product quality.

Characteristics of the molding cycle:

• Shorter molding cycles: Compared to fields like aerospace, the thermoforming cycle for electronic and electrical products is typically shorter, usually ranging from 10 to 30 minutes.
• Suitable for mass production: The multi-layer hot-pressing molding process can meet the demands of large-scale manufacturing for electronic and electrical products.

IV. Application Analysis of Multi-Layer Hot-Press Molding in the Sports Equipment Field
1. Major Composite Material Products in the Sports Equipment Sector
The sports equipment industry was one of the earliest sectors to adopt carbon fiber and glass fiber composite materials, and the use of these materials has significantly enhanced the performance of sports gear—such as lightweight design, increased strength, improved elasticity, and greater durability.
In the sports equipment sector, products primarily made from carbon fiber and glass fiber composites include:
Ball sports equipment:

• Tennis racket frame: Leveraging the high specific strength and excellent elastic properties of carbon fiber.
• Badminton rackets: Pursuing lightweight design, high strength, and excellent elasticity.
• Golf clubs—comprising the shaft and clubhead—require composite materials with high modulus and high strength.
• Table tennis racket: Requires appropriate elasticity and weight distribution.

Cycling sports equipment:

• Bicycle rack: Leveraging the lightweight, high strength, and excellent shock-absorbing properties of carbon fiber composites.
• Bicycle wheelsets: Pursuing lightweight design, high strength, and aerodynamic performance.
• Cycling helmets require materials that are lightweight, high-strength, and offer excellent energy-absorbing properties.

Water sports equipment:

• Surfboard: Leveraging the lightweight and high-strength properties of carbon fiber and glass fiber composites.
• Rowing: Pursuing extreme lightweight design and high strength to enhance speed.
• Kayaking: Requires materials that are lightweight, high-strength, and offer excellent waterproof performance.

Winter sports equipment:

• Snowboards: Require appropriate flexibility, lightweight design, and high strength.
• Ski poles: Leveraging the high specific strength properties of carbon fiber.
• Sleds: Pursuing lightweight design and high strength.

Other sports equipment:

• Hockey stick: Requires high strength and good flexibility.
• Archery equipment: Includes the bow limbs and arrows, requiring composite materials with high modulus and high strength.
• Fitness equipment components: Leveraging the lightweight and high-strength properties of composite materials.

2. Features of the Multi-layer Hot-Press Molding Process for Sports Equipment Products
Sports equipment products are mostly structural components, placing high demands on the material's mechanical properties—such as strength, stiffness, and elasticity. Their multi-layer hot-pressing molding process has the following characteristics:
Temperature control requirements:

• Moderate curing temperature: Typically between 150–250°C, depending on the material type and formulation.
• Precise temperature control: Temperature fluctuations must be kept within a narrow range, typically ±2–3°C, to ensure consistent material performance.
• A stepwise temperature increase may be necessary: Depending on the material's curing characteristics, a stepwise heating curve might be required—such as first heating at a low temperature and then gradually raising it to a higher level.

Pressure control requirements:

• Higher molding pressure—typically ranging from 5 to 20 MPa (equivalent to approximately 50 to 200 tons of force)—is used to ensure the material's density and mechanical properties.
• Uniform pressure distribution: For sports equipment with complex shapes, it's essential to ensure even pressure distribution to prevent localized defects.
• Multi-stage pressure control: Multiple pressurization steps may be required, such as low-pressure impregnation followed by high-pressure shaping.

Vacuum Level Requirement:

• Higher vacuum requirements: Typically, a vacuum level of 0.1–1 kPa (-0.1 to -0.095 MPa) is needed to eliminate air bubbles and enhance the material's density.
• Vacuum-assisted curing: For high-performance sports equipment, curing may need to be carried out in a vacuum environment to enhance material properties.

Characteristics of the molding cycle:

• Longer molding cycles: Compared to electronic and electrical products, the thermoforming cycle for sports equipment is typically longer, usually ranging from 30 to 90 minutes, depending on the material and product design.
• Post-curing treatment may be required: Some high-performance composite materials may need additional post-curing steps to achieve optimal performance.

V. Major Composite Material Products in the Medical Field
The medical field places stringent demands on materials regarding biocompatibility, lightweight design, high strength, and precision manufacturing. As a result, carbon fiber and glass fiber composites—thanks to their outstanding performance characteristics—are increasingly being adopted in medical applications.
Medical applications primarily use carbon fiber and glass fiber composite materials in products such as:
1. Medical device structural components:

• MRI equipment housing: Leveraging the lightweight and non-magnetic properties of carbon fiber composites.
• CT machine components require materials that are lightweight, high-strength, and offer excellent ray penetration.
• Medical robot components: Leveraging the high specific strength and lightweight properties of carbon fiber.
• Medical device moving parts: Striving for lightweight design and high strength to reduce energy consumption and enhance motion performance.

Medical implants and prosthetics:

• Orthopedic implants—such as artificial joints, bone screws, and bone plates—require materials that exhibit excellent biocompatibility with human tissues.
• Dental implants: Require materials with excellent biocompatibility and mechanical properties.
• Prosthetic components: Leveraging the lightweight, high strength, and comfort of carbon fiber composites.

Medical assistive devices:

• Surgical table components: Require lightweight, high-strength materials that are easy to clean.
• Medical bed structural components: Pursuing lightweight design and high strength to enhance mobility and safety.
• Rehabilitation equipment components: Leveraging the lightweight properties and excellent mechanical performance of composite materials.

Medical consumables and disposable items:

• Medical splints: Leveraging the lightweight, high strength, and X-ray penetrability of glass fiber composite materials.
• Medical packaging materials must possess excellent physical properties and biocompatibility.
• Structural components for single-use medical devices: striving for lightweight design and sufficient strength.

2. Characteristics of the Multi-layer Thermal Pressing Process for Medical Products
Medical-grade composite materials for the healthcare sector have extremely high requirements for biocompatibility, dimensional accuracy, and surface quality. The multi-layer hot-press molding process used for these materials features the following characteristics:
Temperature control requirements:

• Moderate curing temperature: Typically between 150–250°C, ensuring material performance while avoiding biocompatibility issues.
• Precise temperature control: Temperature fluctuations must be kept within a narrow range, typically ±1–2°C, to ensure consistent material properties and biocompatibility.
• Uniform temperature distribution: The entire working area must maintain a consistent temperature to prevent localized overheating or overcooling, which could compromise product quality.

Pressure control requirements:

• Moderate to very high molding pressure: Typically ranges from 5 to 20 MPa (equivalent to approximately 50 to 200 tons of force), depending on the material and product design.
• Precise pressure control: Pressure fluctuations must be kept within a narrow range to ensure consistent product quality.
• Multiple-stage pressure control may be required: Depending on the material's curing characteristics, a multi-stage pressurization process might be necessary.

Vacuum Level Requirement:

• High-vacuum environment: Typically, a vacuum level between 0.1 and 1 kPa (-0.1 to -0.095 MPa) is required to eliminate bubbles, enhancing material density and biocompatibility.
• Inert gas protection may be required: For certain materials sensitive to oxidation, curing may need to be carried out in an inert gas environment.

Characteristics of the molding cycle:

• Longer molding cycles: Compared to electronic and electrical products, the thermoforming cycle for medical devices is typically longer, usually ranging from 60 to 120 minutes, depending on the material and specific product requirements.

Strict curing control: Precise control of the curing process is required to ensure the material's final performance and biocompatibility.

Summary

Through an analysis of the multi-layer thermoforming process requirements in three fields—electrical and electronics, sports equipment, and medical devices—and a systematic summarization of the hydraulic press parameters for multi-layer thermoforming, we have arrived at the following key research findings:
Differentiated needs across application areas:

• In the electrical and electronics field: High precision in temperature control and vacuum levels are required, typically calling for lower curing temperatures (120–200°C) and enhanced temperature control accuracy (±1–2°C).
• In the field of sports equipment: This area places high demands on both pressure and the mechanical properties of materials, typically requiring significant molding pressure (5–20 MPa, equivalent to approximately 50–200 tons of force) and moderate temperatures (150–250°C).
• Medical field: Highly demanding in terms of biocompatibility, dimensional accuracy, and surface quality, this area typically requires precise temperature control (±1–2°C) and elevated vacuum levels (0.1–1 kPa).

Common parameters of multi-layer hot pressing hydraulic presses:

• Temperature control accuracy: Most applications across the three fields require temperature control precision within a range of ±1–2°C to ensure consistent product quality.
• Pressure uniformity: Both require the workbench's flatness and parallelism to be controlled at a high level (typically ≤0.05 mm and ≤±0.03 mm, respectively), ensuring even pressure distribution.
• Vacuum requirement: Most applications demand a vacuum level of 0.1–1 kPa (-0.1 to -0.095 MPa) to enhance material density and improve product quality.

Key factors in equipment selection:

• Product size and batch quantity are the primary factors determining the workbench dimensions and the number of mold layers.
• Material properties: Different materials have varying requirements for temperature, pressure, and curing time, directly influencing the selection of equipment parameters.
• Process requirements: Different molding processes—such as whether vacuum assistance is needed, multi-stage pressure control, and so on—place varying demands on equipment configuration.

Applicability of the Universal Series Models:

• 30-ton model: Primarily suitable for small electronic components, small sports equipment parts, and miniature medical products.
• 50-100-ton models: Suitable for producing medium-sized products, this is the most widely used model series.
• 200–300-ton models: Primarily suitable for large-scale products and application scenarios with high-pressure requirements.

Main performance and features of the equipment:
a. High temperature control accuracy of ±1℃;
b. The hot plate temperature difference can be as low as ±3°C at best;
c. The hot plate flatness accuracy can reach up to ±0.02mm;
d. Multi-stage pressure control, with each stage having its own set holding pressure time;
e. Multiple venting function;
f. Multi-stage temperature control;
g. Scheduled heating function;
h. Menu-based save/restore function for product production data;
I. Three-stage pneumatic inflation function;
j. 1000-second ultra-long holding pressure function;
k. Heating methods: Optional electric heating tube heating or mold temperature controller heating;
1. Optional vacuum function;
m. Module configuration: 1–10 layers customizable;

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