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Plastic molding: techniques, materials and mold manufacturing

Plastic molding is one of the most advanced solutions for producing industrial components, offering a unique combination of precision, versatility and speed. Thanks to modern processes and innovative materials, companies can obtain high-quality finished products that are durable and customized to their specific needs. This manufacturing method allows the creation of a wide range of items — from small mechanical parts to large structural components — always ensuring excellent performance and flawless finishes.

Among plastic processing techniques, the injection molding process stands out for its ability to produce complex-shaped parts quickly and consistently, reducing waste and optimizing costs.

The use of specific thermoplastic materials, selected according to the required mechanical, thermal and chemical properties, is essential to achieve outstanding results. The careful selection of materials and strict control of production phases are key factors in ensuring not only the functionality of the components but also their durability and resistance under demanding operating conditions.

Plastic molding techniques

Plastic molding can be carried out using different techniques, each suited to specific production needs. The choice of the most appropriate technology depends on factors such as production volume, part geometry complexity and the required mechanical properties.

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Compression molding

mainly used for the production of thick and highly resistant parts. The plastic material is heated and compressed inside a mold until it reaches its final shape.

Blow molding

ideal for producing hollow containers such as bottles and tanks. A molten tube of plastic (parison) is placed inside a mold and inflated so that it adheres to the mold walls, taking on the desired shape.

Injection molding

The main technology offered by Expyou, ideal for producing high-volume components with outstanding precision and repeatability. The plastic material is heated until it becomes fluid and then injected at high pressure into a mold. This process ensures fine details, fast production times and a wide range of applications — from electrical and plant engineering to electronics, hydraulics, ventilation and acoustics.

Rotational molding

used for large, thin-walled objects such as tanks and industrial containers. The plastic material is heated inside a rotating mold until it spreads evenly along the walls.

Extrusion molding

a technique used for the production of continuous profiles, such as pipes and seals, where molten plastic is pushed through a die to obtain the desired shape.

Mold manufacturing service: a key stage in production

Mold manufacturing is an essential process to ensure a high-quality final result. The molds are designed according to the specific requirements of each product and made from materials resistant to wear and high temperatures, such as hardened steel.

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01

CAD design: use of advanced software to define the part geometry and mold specifications.

02

Prototyping: creation of test models, often made using 3D printing, to verify proper design accuracy.

03

CNC machining: manufacturing of the final mold using computer numerical control machines, ensuring maximum precision.

04

Finishing and testing: mold refinement to eliminate imperfections and testing to ensure optimal performance during production.

Mold manufacturing is an essential process to ensure a high-quality final result. The molds are designed according to the specific requirements of each product and made from materials resistant to wear and high temperatures, such as hardened steel.

Molded thermoplastic materials: features and applications

Choosing the right plastic material is essential to ensure the strength, flexibility and performance required by the final product. Each material offers specific processing characteristics and properties, making it more or less suitable for certain applications.

The thermoplastic materials we use in our production process include a wide range of polymers, each with distinctive properties and specific uses. Polyethylene, for example, is valued for its lightness and chemical resistance, while polypropylene provides excellent mechanical and thermal performance. Polycarbonate is known for its transparency and impact resistance, making it ideal for covers and protective components, while PMMA (or plexiglass) offers a durable and lightweight alternative to glass for applications where transparency is essential. Other materials, such as POM, are chosen for their rigidity and low friction coefficient, ideal for precision mechanical parts, while ABS combines strength and ease of processing, making it suitable for a wide range of consumer products. Each polymer is selected based on project requirements, ensuring tailor-made solutions for sectors ranging from orthopedics to air treatment, water treatment and the electrical industry.

Find out more

Molded thermoplastic materials: features and applications

Choosing the right plastic material is essential to ensure the strength, flexibility and performance required by the final product. Each material offers specific processing characteristics and properties, making it more or less suitable for certain applications.

The thermoplastic materials we use in our production process include a wide range of polymers, each with distinctive properties and specific uses. Polyethylene, for example, is valued for its lightness and chemical resistance, while polypropylene provides excellent mechanical and thermal performance. Polycarbonate is known for its transparency and impact resistance, making it ideal for covers and protective components, while PMMA (or plexiglass) offers a durable and lightweight alternative to glass for applications where transparency is essential. Other materials, such as POM, are chosen for their rigidity and low friction coefficient, ideal for precision mechanical parts, while ABS combines strength and ease of processing, making it suitable for a wide range of consumer products. Each polymer is selected based on project requirements, ensuring tailor-made solutions for sectors ranging from orthopedics to air treatment, water treatment and the electrical industry.

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Why choose us

Thanks to our expertise in injection molding, we support our clients through every stage of the process — from design to production — offering customized, high-quality solutions.

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