Siegfried Hofmann GmbH
About us
The family-owned company offers its international customers innovative solutions in the areas of injection moulding, mechanical engineering, contract manufacturing and automation for the plastics processing industry with a focus on the automotive, medical and packaging sectors.
Continuous research work ensures new economical technologies. For example, the company's own product BEAD.MACHINE is also convincing thanks to various patents: The particle foam moulding machine shines with exceptional product quality, a high degree of design freedom, sustainable operation with resulting cost savings, as well as flexible and fast operational readiness.
More than 250 employees at the company headquarters in Lichtenfels develop and produce multi-cavity moulds as well as machine and automation solutions always according to the claim of highest product and service quality.
Founded in 1958, Siegfried Hofmann GmbH (formerly Werkzeugbau Siegfried Hofmann GmbH) has been operating under the brand name "Hofmann - Ihr Impulsgeber" since 2017.
Products & services
Minimised cycle time: MeKuMed research project - injection mould with handling
Turning five into three: Until now, there used to be five different individual manufacturing steps necessary for the production of medical crimp claps. As part of the state-funded “MeKuMed” research project, Hofmann has worked with project partners to develop a more efficient production in three steps only. Decisive for this: The mould developed by Hofmann, including a handling system for time-saving and automated production. From pilot mould to automated series mould - In the first stage of tool development, Hofmann created a new forming punch with different polishes and coatings for an existing test injection mould of the Institute for Plastics Development. - Following, a pilot tool with a single mould cavity was then designed, manufactured and further optimized to develop the combined process. - Using the resulting findings on the process and mould design, we then constructed and manufactured the final 4-cavity mould. New production chain With the new production chain, the time and equipment requirements can be significantly reduced thanks to our injection moulding tool. This results in a more efficient production with higher quality and which is less prone to errors. New manufacturing process 1. Microstructuring, pre-damaging and cutting out the blanks using a laser by project partner Fraunhofer ILT: circular pre-damaging allows the aluminium to be precisely removed. The rubber stopper can then be pierced with a needle. 2. Forming the metal blank into a crimped cap, followed by injection moulding the plastic component within the combined mould from Hofmann. Discover more at https://www.hofmann-impulsgeber.de/en/company/research-innovations/research-projekt-mekumed/
The particle foam booster: The BEAD.MACHINE
Maximum design freedom and dimensional accuracy for particle foam products – more resource-efficient and faster than ever before. The ready-to-use BEAD.MACHINE shape molding machine enables long-term cost savings while maintaining high quality standards thanks to mold-specific solutions for your product. Perfect for the EPP, EPA, ETPU, EPS, EPE and m-PPE. Amaze your customers with particle foam > Premium product quality > Low costs, less CO2 > Flexible and immediately ready for use Your benefits with the BEAD.MACHINE The shape moulding machine for modern particle foam products > Economical use of resources > New design options > Maximum reproducibility > 2K & Inlays Reduce costs with maximum process accuracy > Parallelism of clamping plates: ± 0,01 mm > Plate positioning accuracy: ± 0,01 mm > Max. traverse speed: 450 mm/sec Discover more at https://www.hofmann-impulsgeber.de/en/technology/particle-foam/beadmachine/
Multi-cavity injection molds
Maximum output with maximum availability: We manufacture multi-cavity injection molds for the special requirements of the medical technology, packaging and consumer goods industries. With great attention to the uniformity of the individual cavities, we ensure the best reproducibility of your injection molded products. Also in combination with other technologies such as 2K, 3K or insert injection molding. Up to 64-cavity: Our high-cavity injection molds set standards in productivity and enable continuous 24/7 production. Highest performance: Our mold are developed for maximum performance to meet even the most demanding production requirements. Maximum accuracy: Precise tolerances are not a compromise, but a promise. Our tools offer maximum accuracy in production. Replaceable cavities: The interchangeability of cavities enables flexibility, tool longevity and optimizes production processes. Based on a pilot injection mold: Injection molds can be designed on the basis of a carefully developed pilot tool. This allows us to optimize every nuance from the flow behavior of the plastic melt to the final cycle time and ensure that the end product meets the highest standards.