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Latest News

EconCore chooses MEAF 50-H34 extruder for R-PET honeycomb sandwich panels EconCore from Leuven (Louvain) in Belgium has chosen the high speed, energy efficient MEAF 50-H34 extruder for its trial production of recycled PET (R-PET) ThermHex honeycomb sandwich panels.

[view details]29-08-2019

EconCore Shows its Lightweight Honeycomb Production Technology at K 2019 EconCore, the worldwide leader in thermoplastic honeycomb production technology, will be exhibiting at K 2019 from October 16 to 23 in Düsseldorf, Germany.

[view details]27-08-2019

EconCore Teams up with Ultrapolymers and DuFor for Recycled PET Honeycomb Development EconCore, the leader in thermoplastic honeycomb core production technology, collaborates with Ultrapolymers and DuFor in an R&D project funded by the Flemish Government to develop a new product: a thermoplastic honeycomb core made from recycled PET.

[view details]03-07-2019

EconCore presents new thermoplastic honeycomb panel production technology at Plastics Extrusion World Expo 2019 EconCore, a leader in thermoplastic honeycomb production technology, will be exhibiting at the Plastics Extrusion World Expo in Cleveland (Ohio, USA) on May 8 and 9.

[view details]30-04-2019

GALM Summit On 24/25 April industry experts and OEMs will meet in Munich for the 8th "Global Automotive Lightweight Materials Summit 2019" (GALM Summit).

[view details]24-04-2019

Sandwich Technology

Today, the exploitation of the economical advantages of weight reduction has become essential for many industries. 

It is well known that the task distribution in sandwich construction enables high stiffness and strength for lightweight panels and parts. Sandwich construction with low cost core materials can not only be more lightweight but also more cost effective, especially because the advancement and automation of production processes results in a reduction of the production cost for lightweight sandwich panels.

The combination of materials to utilize their favorable properties is the basic idea of composites engineering. With a monolithic material, a thickness increase leads to an increase of both weight and material cost of a panel. 

Sandwich constructions use the fact that the core of a panel that is loaded in bending does not carry much in-plane stresses and does not represent the surface of the panel. The core can thus be made from a different, more lightweight and/or less expensive material. Sandwich construction takes the different demands on the central layer (core) and surface layers (skins) into account

The selection and optimisation of the different material layers according to their demands enables to improve the weight and/or cost specific properties of the construction. The potential economic advantage of low cost core materials is as big as the potential weight saving due to low density core materials.

The support of the skins (to prevent relative displacements of the skins out-of-plane and in-plane) is the main task of every sandwich core material, thus a classification should be made based on how this task is fulfilled by the different core materials. Honeycombs are used in aerospace industries since many decades as the preferred core material for very light and strong sandwich panels and structures. From all sandwich core materials honeycombs enable the best mechanical performance per weight, thus they offer the largest potential for material cost savings.

econcore
Principle components in sandwich construction and task distribution between core and skins

econcore
Effect of sandwich construction on weight and material cost and the economic advantage of low cost cores

econcore
Sandwich core material classification and comparison