Plastic enclosures – find manufacturers and suppliers

Plastic enclosures are housings made of plastic that are used to encase and protect electronic, mechanical or other sensitive components, and often also to design the form and function of a product.

They are widely used in numerous industries, including the electronics, automotive, medical technology and consumer goods industries.

Below you will find how plastic enclosures work, the different materials and manufacturing processes, their use and their advantages:

How plastic enclosures work:

The main function of a plastic enclosure is to protect the internal components from external influences such as moisture, dust, mechanical shocks and chemical substances.

1. Mechanical protection:
   Absorbs shocks and vibrations.
   Prevents the ingress of foreign bodies.
   Increases the service life of the protected components.
2. Electrical protection:
   Insulates electrical components and prevents short circuits.
   Reduces the risk of electric shocks for the user.
3. Environmental and chemical resistance:
   Protection against moisture, water and corrosion.
   Resistant to many chemicals, depending on the type of plastic.
4. Thermal properties:
   Depending on the material, it can be heat-resistant or heat-insulating.
   Supports the dissipation of heat through special designs.

Materials for plastic enclosures:

Different plastics are used depending on the area of application, including:

1. ABS (acrylonitrile butadiene styrene) is particularly robust, impact-resistant and easy to process. These housings are used in electronics and household appliances.
2. Polycarbonate (PC) has a high impact resistance. Transparent versions of this plastic are also available. Polycarbonate is used in medical technology.
3. Polypropylene (PP) is particularly resistant to chemicals and flexible. This plastic is used for housings in the chemical industry.
4. PVC (polyvinyl chloride) is weather-resistant and flame-retardant.
5. Polyamide (PA, nylon) has a high mechanical strength and is very abrasion-resistant. Polyamide is often used for housings in mechanical engineering and the automotive industry. |

Manufacturing processes for plastic enclosures:

There are various processes for manufacturing plastic enclosures, depending on the choice of material and the desired properties:

1. Injection molding is suitable for complex shapes and high production volumes.
2. Thermoforming is cost-effective and suitable for thin-walled housings.
3. Extrusion is ideal for elongated housing shapes.
4. 3D printing is used in prototype construction and increasingly for the production of small series.

Use of plastic enclosures:

1. Electronics:
Enclosures for smartphones, computers and household appliances.
Protective housings for industrial controls and sensors.

2. Automotive industry:
Covers for control units.
Protective housings for batteries and sensors.

3. Medical technology:
Enclosures for diagnostic devices and medical instruments.
Sterilizable plastic housings.

4. Industry and mechanical engineering:
Robust enclosures for machine controls.
Protective housings for measuring devices.

5. Household and consumer goods:
Switch enclosures and remote controls.
Weather-resistant outdoor enclosures.

Advantages of plastic enclosures:

• Lighter than metal enclosures of comparable size.
• Easy and flexible to process.
• Very inexpensive.
• High corrosion resistance. Therefore suitable for damp and aggressive environments.
• High design freedom.

Plastic enclosures are indispensable in numerous industries due to their versatility, cost efficiency and protective function. Depending on the requirements, different materials and manufacturing processes can be selected to provide an optimum solution for specific applications.

Below you will find an overview of the most important criteria to look out for when purchasing plastic enclosures:

Purchasing plastic enclosures requires careful analysis of various factors to ensure quality, cost, functionality and delivery reliability.

• Before making a purchase, the purpose for which the enclosure is required should be clearly defined.
• Area of application: Industry, medical technology, electronics, automotive or outdoor use, etc.
• Mechanical stress: Does the housing need to be impact-resistant, resilient or flexible?
• Environmental influences: Is the enclosure exposed to moisture, dust, chemicals or UV radiation?
• Safety requirements:*Does it need to be flame-retardant, EMC-protected or insulating?
• Depending on the application, different plastics are more or less suitable.
• ABS (acrylonitrile butadiene styrene): Impact-resistant, easy to process and very cost-effective. Well suited for machine control housings or electronics.
• Polycarbonate (PC): High impact strength and temperature resistant. Transparent housings are possible. Suitable for medical technology and safety engineering.
• Polypropylene (PP): Chemical-resistant, flexible and lightweight. For enclosures in the chemical industry and for containers.
• PVC (polyvinyl chloride): Flame retardant, weatherproof and good electrical insulator. Suitable for electrical enclosures and outdoor applications.
• Polyamide (PA/nylon): High strength, abrasion resistant and durable. Good for housings in mechanical engineering and the automotive industry.
• PEEK (polyetheretherketone): Extremely temperature-resistant, high-strength and chemical-resistant. For high-performance applications in aviation and medical technology.
• If you are unsure about the right material, suppliers or material testing laboratories can provide advice.
• Are available standard enclosures sufficient or is a custom-made enclosure more suitable?
• Standard enclosures are available in many dimensions and designs. They are inexpensive and can be delivered quickly and are often available with accessories (seals, brackets).
• Custom-made enclosures are tailor-made solutions for specific requirements. They are more expensive and have longer delivery times.
• If a standard enclosure with minor modifications is sufficient, you save time and money.
• Check the protection classes and certifications that may be required.
• Many applications require special protection classes and standards.
• IP protection classes (Ingress Protection): Important for protection against dust and water.
• IP54: Protection against splash water and limited dust.
• IP65: Dust-tight, protection against water jets.
• IP67: Dust-tight, protection against brief immersion.
• IP68: Dust-tight, permanent immersion possible.
• Other relevant standards are:
• UL certification: fire protection, electrical safety.
• EMC protection: Electromagnetic compatibility for electronic devices.
• RoHS / REACH: Environmental and material conformity.
• FDA approval. For medical technology or food applications.
• You should clarify certifications with the supplier in advance and request test reports if necessary.
• Quality assurance measures should be clarified with the manufacturer.
• Clarify the price-performance ratio and purchasing conditions before buying:
• Cost factors include material costs, the manufacturing process, tooling costs (for individual injection molds), certification and testing costs as well as transport and customs fees (for imports).
• Please note. Standard products are usually available immediately, custom-made products take longer
• Compare offers from several suppliers and use long-term contracts for stable prices.
• For critical applications, a reliable supplier is more important than the cheapest supplier.

Professional purchasing of plastic enclosures requires a sound analysis of material properties, protection requirements, manufacturing processes, quality standards and delivery conditions. Careful planning and selection of the right supplier saves costs in the long term and minimizes risks.

Plastic enclosures can be sourced from various suppliers. Comprehensive information about manufacturers and suppliers of Plastic enclosures from all over the world can be found on Exportpages.