Long glass fibre reinforced PP injection moulding at HSV-TMP the advantages

Long glass fibre reinforced PP Injection Moulding at HSV-TMP

Example motor unit with long glass fiber reinforced PP

Long glass fibre reinforced PP

Adding glass fibre to polypropylene (PP) significantly enhances the mechanical properties of the thermoplastic, such as tensile strength and compressive strength. Long glass fibre reinforced PP / long glass fibre filled PP is also affordable, sustainable, and easy to recycle. The material is also extremely suitable for redesigning metals or other technical materials. This makes it possible to achieve savings and develop alternative lightweight products and technical shaped components.

Long glass fibre reinforced PP

Long glass fibre reinforced PP / long glass fibre filled PP is regularly used for injection moulding of large shaped components, products and housings made of plastic. In fact, glass fibres are the type of fibres used most frequently in reinforced polymers. This material is used for such purposes as producing a high-quality finished product that is easy to clean, requires UV resistance, and has good thermal properties. Other advantages include:   

  • High modulus of elasticity
  • Low density
  • High strength
  • Long-lasting resistance to thermal ageing
  • Increased toughness
  • Beautiful surface finish

Injection moulding with long glass fibres

The initial length of the long glass fibres is somewhat limited during processing in an injection moulding machine, due to the size of the pellets (generally 10 mm – 25 mm).

In the first stage, during plasticisation, the fibres are subjected to extreme force. This is because the softened substrate is not yet fully melted at that point.

Flow resistance gradually decreases during the melting process. After the mixture is fully melted, the substance is injected into the mould.

Factors that are taken into account when processing long glass fibre PP include the configuration of the injection screw assembly and the non-return valve. Find out more about the injection moulding cycle of plastic products here.

When can fibre glass reinforced PP be used?

Wondering when fibre glass reinforced PP is used? Its mechanical properties make it possible to use this material in a wide range of applications and in various market segments. For example, this technical plastic is found in vehicles, or in agricultural applications such as: 

  • Instrument panels
  • Front-end components and
  • Base-plate components

It is also used to replace metals or other technical materials with lightweight materials. Would you like to know whether your product, shaped component or housing can be redesigned? Request a QuickScan and receive a quick answer about the possibilities and an initial estimate of the costs.

Finishing and assembly


If you have your products, shaped components or housings produced by HSV-TMP, you can also opt to have us handle assembly and logistics. This can offer you advantages and help you achieve cost reductions in multiple areas. More information on finishing and assembly, including paintwork, embossing, galvanising, prints and metallising, etc., is available on the assembly page.

What does long glass fibre reinforced PP injection moulding cost?

Would you like to request a cost estimate for long glass fibre reinforced PP injection moulding? The plastic experts at HSV-TMP are ready to help you arrive at an estimate of the costs for your plastic product, shaped component, housing or parts. Request a plastic QuickScan now. The results of the QuickScan are used to assess the feasibility of your product design and offer you an initial price estimate.

Sustainable production

At the HSV Technical Moulded Parts injection moulding company, we take good care of the environment. We consider sustainable production of plastic products to be logical, just like recycling and reusing plastics. Long glass fibre reinforced polypropylene is ideal for recycling and reuse and aligned with the circular economy. Read more about our sustainable initiatives.

Injection moulding of large plastic products

HSV Technical Moulded Parts specialises in injection moulding of large plastic products. Various thermoplastic polymers are used in injection moulding, sometimes supplemented with additives such as glass fibre. Would you like advice and information on which thermoplastic is best for the realisation of your plastic product, shaped component or housing? Request the Plastic QuickScan and receive advice without any obligations.

More about plastics


Plastic Quickscan

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About us: Introduction

Are you looking for a partner who can support you with the development of your plastic products due to practical experience? At HSV TMP we have decades of experience in the development of plastic components and a wealth of knowledge when it comes to the materials and techniques required.


Company profile

An increasing number of designers and purchasers are opting for plastic

HSV TMP is one of Europe’s leading companies when it comes to manufacturing large plastic products. At our factories in Ede and Leeuwarden we develop and produce innovative housings, fittings and other components for customers in a diverse range of sectors.

Company profile
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Our history and organisational structure

The history of HSV Technical Moulded Parts (HSV TMP) can be traced back to the foundation of our sister company, HSV Moulded Foams. This company – like HSV TMP now a separate division of the HSV Group – started manufacturing EPS packaging at a production location in Ede in 1968.


Core Values

How we do business

We are convinced that our customers not only work with us because of the products we supply, but also because of the way we do business. We have broken down this approach into 4 core values.

Core Values

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We think along with you

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