Highway sound barrier panels are specialized structures designed to reduce traffic noise pollution in residential and sensitive areas adjacent to highways. These panels typically consist of multi-layered materials (e.g., metal sheets, sound-absorbing cores like mineral wool or glass fiber, and protective coatings) engineered to absorb, reflect, or dissipate sound energy. Sound barrier panels are often modular, with interlocking edges (e.g., tongue-and-groove joints) to minimize gaps and enhance sealing.
The market demand for highway sound-absorbing panels, as an important means of traffic noise control, is showing a growing trend globally. Countries have adopted different strategies and technologies to deal with the highway noise problem according to their own environment, policies and technology levels. The following is an overview of the highway acoustic panels market in different countries:
United States
The U.S. started early in highway noise control, adopting a variety of materials and structures for sound barriers, such as earth embankment, wood, reinforced concrete, and metal. In terms of design, the U.S. attaches great importance to the shape and color of the sound barrier wall to ensure its harmony and unity with the surrounding environment.
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Switzerland
Switzerland actively explores the combination of soundproof wall and renewable energy in highway noise control. For example, solar photovoltaic panels are installed on highway noise walls to realize the dual functions of noise reduction and power generation. However, such projects face various challenges in the implementation process, such as administrative approval, safety and funding.
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02
Netherlands
The Netherlands is also committed to installing solar photovoltaic panels on highway soundproofing facilities, transforming traffic arteries into power generation sites. This innovative initiative not only effectively reduces traffic noise, but also provides a new way for renewable energy production.
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03
Germany
Germany has adopted a variety of materials and structures for sound barriers in highway noise control, such as earth embankment, wood, reinforced concrete and metal. In terms of design, Germany attaches great importance to the shape and color of noise barriers to ensure their harmony and unity with the surrounding environment.
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Coil Perforation Line
Metal punching and rewinding line is a kind of automatic production line equipment used for metal sheet processing, the main function is to continuously punch and process the metal coil, and to rewind the processed sheet into rolls. It is usually used in construction materials, automobile manufacturing, home appliances, filters, sound barriers (e.g., highway sound-absorbing panels) and other fields.
The main components of a metal punching and rewinding line:
★Uncoiler:
Uncoils the original metal coil (e.g. aluminum, galvanized, stainless steel, etc.) to provide a continuous material input for subsequent processing.
★Leveling Machine:
Leveling the unfolded sheet metal, eliminating problems such as waves and deformation of the sheet material, and keeping the sheet material flat.
★Servo Feeder:
Accurately control the feeding speed and position of the sheet metal to match the processing rhythm of the punching machine and ensure the accuracy of punching.
★Punching Machine:
Continuous punching of metal sheets by means of molds, which can realize holes of different shapes and specifications (e.g. round holes, square holes, hexagonal holes, etc.).
★Recoiler:
Re-roll the punched sheet metal into rolls for subsequent transportation and storage.
★Control System:
Adopt PLC or numerical control system to realize the automatic control of the whole production line, including speed adjustment, position control, process parameter setting, etc.
Sound Barrier Roll Forming Machine
Sound Barrier Making Machine is design for product the highway sound barrier product,With metal coils, the coil is first unrolled by means of an unwinder, and the sheet is kept flat by eliminating any waves or bends in the material with a leveling machine. After punching, the sheet is passed through a Roll Forming Machine, which presses it into the desired shape, such as flat, wavy, or curved sheets.
This forming process increases the structural strength of the sheet and makes it easier to install and fix.
After molding, the back of the perforated sheet is filled with sound-absorbing material (e.g., glass wool, rock wool, polyurethane foam, etc.) and encapsulated and secured with acoustically permeable cloth or non-woven fabric.
The choice of sound-absorbing material depends on the noise reduction requirements and the environment in which it will be used, e.g. moisture-proof, fire-proof, etc.
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Panel Type |
Key Process Characteristics |
|
Metal Panels |
Perforation + Roll Forming + Surface Coating + Filling |
|
Concrete Panels |
Molding + Curing + Acoustic Coating Application |
|
Transparent Panels |
Acrylic or Polycarbonate Cutting + Drilling + Framing |
|
Composite Panels |
Multi-layer Composite + Hot Pressing + Acoustic Filling |
The production of highway sound barrier panels is a multidisciplinary process combining material science, acoustic engineering, and automation. With the market shifting toward sustainability and smart technologies, manufacturers must adopt innovative materials (e.g., nano-composites) and digital tools (e.g., AI-driven quality control) to stay competitive.
This has also increased the production requirements for highway guardrail machine equipment. As a manufacturer of cold roll forming machines, KINGREAL ROLL FORMER will customize the design and production according to the actual production needs of customers.