I. Automotive Sealing and Shock Absorption Systems: Focusing on "Long-term Sealing and Low-noise Shock Absorption"

1. Production of Vehicle Body Seals

• Door frame weatherstrips: Adopting a composite structure of "EPDM rubber + steel core skeleton + flocking layer." The equipment synchronously controls the temperature (160-180℃) and pressure of the rubber material through multi-roll calendering to ensure tight bonding between rubber and steel core skeleton (peel strength ≥8N/cm). It also completes the flocking layer bonding online (flocking adhesion ≥5N/25mm), preventing flocking from falling off in low-temperature (-40℃) or high-temperature (80℃) environments, meeting the standard of ≤10% attenuation in sealing performance after 150,000 km of vehicle operation.
  
  
• Power battery compartment sealing strips: To meet the waterproof and dustproof requirements of high-voltage compartments in new energy vehicles, the equipment can produce "silicone + glass fiber cloth" composite sealing strips. The calendering process controls the rubber layer thickness deviation to ≤0.02mm, ensuring perfect fit between the sealing surface and the compartment, meeting IP6K9K protection rating (no leakage under high-pressure water spray), and its corona resistance (withstands ≥10kV for 1000 hours) adapts to the high-voltage environment of the battery compartment.
  
  

2. Shock Absorption and Noise Reduction Components

• Engine mount shock pads: Adopting a three-layer composite structure of "natural rubber + polyester cord fabric + metal lining." The equipment achieves bubble-free bonding between rubber and metal through continuous rubberizing technology, with the rubber layer's elastic modulus controlled at 5-8MPa (deviation ≤5%), ensuring a shock absorption efficiency of ≥80% and reducing noise transmitted from the engine to the vehicle body (attenuation ≥25dB).
  
  
• Chassis bushings: For rubber bushings of MacPherson suspensions, the equipment produces "neoprene thin sheets (0.3-0.5mm) + cord fabric reinforcement layer" composite structures through calendering. After molding and vulcanization, high-rigidity bushings (radial stiffness ≥150N/mm) are formed, adapting to the anti-deformation requirements during vehicle steering, while their fatigue resistance (no cracks after 1 million cycles) meets the vehicle's life cycle requirements.
  
  

II. Automotive Interior and Functional Components: Balancing "Texture, Environmental Protection, and Lightweight"

1. Interior Composite Parts

• Instrument panel skins: Using "PVC/ABS alloy rubber + non-woven fabric base" calendered composites. The equipment can simultaneously complete rubber coloring (e.g., imitation leather texture), embossing (Ra ≤0.8μm), and base material bonding, with a production speed of 15 meters/minute. By controlling the calendering temperature gradient, the skin's thermal shrinkage rate is ensured to be ≤0.3%, avoiding wrinkling after long-term use. The finished product meets the automotive interior standard of VOC (volatile organic compounds) ≤50μgC/g.
  
  
• Door armrest reinforcement layers: Using "glass fiber mat + PP rubber" continuous rubberizing and calendering to form lightweight reinforced panels (density ≤1.2g/cm³), replacing traditional metal skeletons, reducing weight by 30% while achieving a flexural strength of ≥80MPa, adapting to the lightweight needs of new energy vehicles.
  
  

2. Functional Interior Accessories

• Seat belt guides: Producing "nylon canvas + TPU rubber layer" composite sheets through calenders, which are cut and formed into guides. The rubber layer's friction coefficient is controlled at 0.3-0.4 (deviation ≤0.02), ensuring smooth retraction of the seat belt (resistance ≤5N), and its aging resistance (no cracking after 1000 hours at 120℃) meets the vehicle's sun exposure environment requirements.
  
  
• Trunk waterproof mats: Adopting a "polyester cloth + PVC rubber layer" double-sided rubberizing process, with uniform rubber layer thickness (deviation ≤0.03mm), ensuring waterproofness (no leakage under 0.1MPa pressure for 30 minutes). Meanwhile, calendered anti-slip textures (protrusion height 0.5-1mm) enhance item fixation, adapting to the trunk usage scenarios of SUVs and sedans.
  
  

III. Tire and Power Transmission Systems: Supporting "Safety, Efficiency, and Longevity"

1. Production of Core Tire Components

• Tire airtight layer: Using butyl rubber thin sheets (thickness 0.3-0.5mm) calendaring. The equipment ensures film air permeability ≤10⁻⁸cm³/(cm·s·Pa) through high-precision roll gap control (deviation ≤0.01mm), reducing tire monthly air leakage rate to ≤0.5%, adapting to the low rolling resistance tire needs of new energy vehicles.
  
  
• Tire body reinforcement layer: Polyester cord fabric is rubberized on both sides and calendered into shape, with the bonding strength between the rubber layer and cord fabric ≥10N/mm, improving the tire body's impact resistance (able to withstand 80km/h impact on obstacles without blowout), adapting to complex road conditions of commercial vehicles and off-road vehicles.
  
  

2. Transmission and Pipeline Systems

• Synchronous belts and transmission belts: Using "glass fiber cord fabric + neoprene" continuous rubberizing and calendering to produce engine timing synchronous belts. The equipment controls the belt thickness deviation to ≤0.02mm, ensuring transmission accuracy (phase error ≤0.5°), and oil and temperature resistance (-30℃ to 120℃ without performance attenuation), with a service life of ≥150,000 km.
  
  
• Fuel/coolant pipelines: Producing "oil-resistant nitrile rubber inner layer + reinforced cord fabric + EPDM outer layer" composite hoses through calenders. The uniform thickness of the inner rubber layer (deviation ≤0.03mm) ensures fuel permeability resistance (weight loss ≤0.5% in 24 hours), adapting to the fuel systems of traditional fuel vehicles and hybrid models. For new energy vehicle coolant pipelines, "silicone inner layer + polyester cloth reinforcement layer" can be produced, resistant to ethylene glycol corrosion (no swelling after 1000 hours), meeting the battery thermal management cycle requirements.
  
  

IV. Core Advantages of Technology Adapting to the Automotive Industry

• Meeting strict standards: Components produced by the equipment can pass automotive-grade certifications (e.g., ISO 16232, SAE J2000), adapting to extreme environments such as high and low temperatures (-40℃ to 120℃), vibration (10-2000Hz), and chemical corrosion (fuel, coolant).
  
  
• Supporting lightweight and integration: Through "textile reinforcement + thin rubber layer composite" technology, component weight is reduced by 20%-30% compared to traditional processes, and integrated production reduces splicing links (e.g., one-time 成型 of weatherstrips instead of 3-time bonding), improving assembly efficiency.
  
  
• Batch stability: The continuous production mode ensures that the performance deviation of products in the same batch is ≤3% (e.g., elastic modulus of shock-absorbing parts, cross-sectional size of seals), meeting the consistency requirements of millions of units mass production by automakers.