Injection blow molding is a specialized plastic manufacturing technique used to produce hollow parts using compressed air. The method combines the precision of injection molding with the flexibility of blow molding and is ideal for everything from containers and bottles to technical components with internal cavities.
You can quickly find answers to common questions about "Injection Blow Molding" by clicking [here].
Injection blow molding is a hybrid process that combines elements from both injection molding and blow molding. The method uses compressed air to shape the heated plastic into the mold, allowing for the production of parts with internal cavities and complex geometries.
The result is strong, lightweight, and functional plastic parts that can be customized for a wide range of applications.
At Krebs & Co., we have many years of experience in injection blow molding and deliver customized solutions that meet even the most specific requirements. Whether you need durable industrial components or lightweight products with complex geometries, our advanced manufacturing methods ensure high quality and consistent results.
Although both injection blow molding and injection molding are used for producing plastic parts, they differ significantly in both method and result.
Injection Molding It is primarily used for compact, solid parts – such as technical components and parts where high precision is required.
Injection Blow Molding on the other hand, is used for hollow parts that require a lightweight structure but still demand high strength and accuracy.
By combining the precision of injection molding with the hollow forming capabilities of blow molding, injection blow molding opens up new design and production possibilities.
Injection blow molding offers a range of advantages that make it an ideal choice in many industries and sectors where there are unique requirements for certain products or equipment. These advantages include:
We understand that your business needs a partner who can deliver reliable results on time. At J. Krebs & Co., we combine experience, advanced technology, and streamlined processes to ensure your injection-molded components are produced quickly and with precision.
Are you looking for a partner who can deliver injection blow molding with a focus on precision and speed? Contact us today for a no-obligation discussion on how we can help optimize your company's production through professional injection blow molding.
Injection blow molding is primarily used for the production of hollow plastic parts where low weight, functional design, and high strength are required. Typical applications include plastic containers, bottles, technical components with internal cavities, medical packaging, and products with integrated grips, threads, or filling systems.
The method is particularly relevant where both form and function are required, such as in the packaging, automotive, electronics, and ventilation industries.
Injection blow molding can use a variety of thermoplastic materials, depending on the product's requirements for strength, flexibility, and chemical resistance. The most commonly used materials are:
Polyethylene (PE) – flexible, durable, and chemical-resistant.
Polypropylene (PP) – lightweight, rigid, and suitable for technical parts.
PET (Polyethylene Terephthalate) – commonly used for bottles and food packaging.
Technical plastics – such as PA (nylon), EVA, and TPE for specific functions.
Material selection depends on factors such as temperature tolerance, food approval, environmental requirements, and the product's mechanical properties.
The cost of injection blow molding depends on several factors, including the complexity of the part, material selection, mold design, the number of units, and any post-processing requirements. For smaller batches, tooling costs may represent a larger share of the total cost, while larger batches benefit from lower unit prices and faster cycle times.
It is a cost-effective method for high-volume production of hollow plastic parts, especially where low material consumption and lightweight are key parameters. Contact us for a specific evaluation and quote based on your project.
Contact us at krebs@krebs-co.dk to get a quote for your production needs.
Injection blow molding is used in a variety of industries where there is a need for hollow plastic products with specific functions and low weight. The most typical industries include:
Packaging industry – e.g., containers, bottles, and dispensing systems
Medical and pharmaceutical industry – for safe and hygienic packaging
Automotive industry – for technical plastic parts and fluid containers
Electronics and ventilation – for lightweight, hollow components and enclosures
Food and cosmetics – for user-friendly and durable plastic packaging
The method is particularly attractive in industries where product safety, weight reduction, and design flexibility are key considerations.
J. Krebs & Co. is a Danish-owned company specializing in consulting and manufacturing plastic components—primarily technical parts, medical products, and packaging for a wide range of customers both in Denmark and abroad. With decades of experience, we’ve been a trusted name in the industry since 1956.
From consulting to manufacturing, we deliver your plastic parts at competitive rates.
