High Precision Moldmakers
Sabe quais são os materiais mais usados na injeção de moldes?
Designing and creating a mould is a complex task that requires advance planning. One of the factors to take into account is the type of material that will be injected into the moulds, as they all serve different purposes. Though some are more well-known than others, several materials can be used for injection moulding, so check out some of the most popular options.


Polyethylene (PE)

This is the most widely used plastic in the world, especially when it comes to producing plastic bottles, shampoo containers, toys and fuel tanks with its popularity stemming from its key properties: durability, insularity, and water resistance. Every year, over 100 tons of this resin are produced making up around 34% of the plastics market. Several variants of polyethylene are produced, examples including high density (HDPE) and low density (LDPE) polyethylene.


Acrylonitrile Butadiene Styrene (ABS)

An engineering-grade plastic with good dimensional stability that is highly resistant to scratches, cracks and tears and has a low melting temperature, ABS can be used for electronics and car parts, pipe fittings or toys. Many of the toys sold by Lego are made out of this material.


Polymethyl methacrylate (PMMA)

Better known as acrylic, this transparent thermoplastic is often used in sheet form as an alternative to glass. As well as being more transparent than glass, it is 30 times stronger and 2 times lighter. PMMA  can be used on signs, lenses, skylights, LCD screens and security barriers.


Nylon (PA)

Nylon is a very versatile, durable, flexible synthetic thermoplastic polymer that comes in a range of colours. Often used as an alternative to silk, rubber, and latex, it is widely used to make safety belts, ropes, parachutes and hoses.


Polycarbonate (PC)

Polycarbonate belongs to a group of thermoplastic polymers used in engineering. Easily worked, moulded, and thermoformed, it is also fire resistant and an excellent insulator. This material is often used to manufacture mobile phones, computers, car radiator grilles, and even bus stops.


Polyetherimide (PEI)

Polyetherimide PEI is an amorphous, amber-to-transparent thermoplastic that is both chemical and fire resistant. However, it’s the plastic’s adhesive properties and chemical stability that have made it a popular base material for 3D printers. It is also widely used to make medical instrument components, electrical connectors, and parts of scientific equipment.


Polyoxymethylene (POM)

Used to make screws, nuts, electronic cigarettes, watch straps, and guitar picks, this is an engineering thermoplastic often used when parts require high precision, rigidity, low friction and excellent dimensional stability. Its properties mean that it can even be used instead of metal.


Polypropylene (PP)

Partly crystalline, non-polar, robust, resistant, and highly flexible, this thermoplastic polymer is used to manufacture a variety of items from bottle caps to car bumpers and rucksacks to even sutures, cling film and tobacco.


Polystyrene (PS)

Best known as Styrofoam, this synthetic aromatic hydrocarbon polymer is made out of a monomer known as styrene. Whether produced as a solid or foamed, general purpose polystyrene is transparent and hard but brittle. It can be moulded easily with high precision and can be coloured. Polystyrene is often used to produce egg cartons, meat trays, insulation, and even household appliances.


Operating in the market for over 30 years, Rectimold has always stood out for its technique in working high-precision steel moulds. The company’s solid structure, the quality of its work, the competence of every employee and an unwavering compliance with deadlines are all characteristics that set it apart in the industry.

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