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HAVER & BOECKER
Production depth
Weave – assemble – test

All production processes from a single source

Would it not be great to order a product – in this case made of wire cloth – from just one supplier? And a supplier who delivers it to you without complication and from a single source? Without time-consuming coordination and elaborate agreements between different stakeholders – no matter how complex your product is? For several generations, Haver & Boecker's cause has been to fulfil precisely this wish for you. Our extraordinary depth of production helps us to achieve this.

We go into detail

Processes in the wire weaving division

To give you a specific idea of what happens on more than 30,000 m² of production space, we present the most important production steps in our wire weaving division in detail here.

Administration building of the Haver & Boecker wire weaving division Administration building of the Haver & Boecker wire weaving division Administration building of the Haver & Boecker wire weaving division
Administration building of the Haver & Boecker wire weaving division with facade cladding made of architectural wire mesh.

Weaving

It starts with in-house design of the weaving looms

As a wire weaving division, processing wires is our core competence. We can produce wire cloth or pre-crimped wire mesh from the following wire thicknesses on our own weaving looms:

  • 13 µm to 6.3 mm in Oelde
  • Up to 12 mm in Belgium
  • Up to 20 mm in Canada

For 130 years everything has revolved around warp and weft, and throughout the process a variety of woven wire cloth has been created, which will continue to grow with every new challenge in the future and truly leaves nothing to be desired.

We produce in Oelde in the fine weaving facility, coarse weaving facility and mesh facility. We produce in Oelde in the fine weaving facility, coarse weaving facility and mesh facility. We produce in Oelde in the fine weaving facility, coarse weaving facility and mesh facility.
In the fine weaving sector, we weave using an average of over 70 weaving machines.

Pre-crimped wire mesh

We produce pre-crimped wire meshes with a wire diameter of approx. 0.5 mm to 20 mm. They are characterised by the fact that the warp and weft wires are pre-crimped, i.e. pre-formed, before weaving. This way we guarantee you a maximum accuracy of the meshes. In addition to round wires, we also process flat wires, cables or triangular profiles. For architectural meshes different types of wire can be combined.

Haver & Boecker designs and produces the required crimping wheels itself.
Your advantage: Here, too, we can respond to almost any customer request and produce the appropriate specification consisting of material, weave type, aperture width and wire thickness.

We not only weave stainless steel

Learn more about our extraordinary variety of materials: Down to the finest wires, we process all weavable materials – from stainless steel to special materials such as titanium and Hastelloy.

Good reasons for supplier selection

Find out why we are the right partner for you

At our headquarters in Oelde, Germany alone, Haver & Boecker maintains amongst others a stock of more than 3,600 different types of mesh [...].
Good reasons for choosing this supplier
Find out more about why Haver & Boecker is a great cooperation partner Find out more about why Haver & Boecker is a great cooperation partner Find out more about why Haver & Boecker is a great cooperation partner

Calendering

The wire mesh is given a defined thickness

The woven wire cloth is rolled for the following reasons:

  • Stabilisation of the mesh, which becomes more resistant to displacement
  • Influencing the filter fineness with fine mesh types
  • Smoothing and homogenisation of the mesh surface
During calendering, the wire mesh is rolled to a defined thickness During calendering, the wire mesh is rolled to a defined thickness During calendering, the wire mesh is rolled to a defined thickness
During calendering, the wire mesh is reduced to a fixed thickness between two steel rollers.

Why is screen printing mesh calendered?

Precision screen printing is all about precise ink application.
The smoothed metal wire mesh has the effect of reducing deviations in print layer thickness and squeegee wear.

Processing screen printing mesh:

  • Aqueous ultrasonic cleaning
  • Calendering
  • Can be cut to size in different windings:
    e.g. 22.5° - 30° - 45° or 90°
Thermal treatment
Solution soft annealing enables 3D deformation of the wire cloth, sintering fixes the wire crossings.

Porostar® wire mesh laminates are sintered

The wire mesh layers are firmly joined together

All Porostar® composite plates have one thing in common: They consist of a multitude of individually configurable wire mesh layers that are firmly joined to each other by diffusion. The geometric structure of the individual mesh layers remains unchanged and a stable porous filter medium with pre-determinable characteristics is created.

Production steps for Porostar® wire mesh laminates:

  • Cutting the individual mesh layers
  • Configuring and sintering
  • Depending on the version, welding and / or moulding

Other processes at a glance

Cutting

Pieces or strips with and without edge protection

Rotating or fixed cutters, slitting, waterjet, plasma, laser or erosion cutting: We produce wire cloth blanks as individual or series production with different cutting procedures on high-precision machines.
 

Cutting the woven wire cloth into strips Cutting the woven wire cloth into strips Cutting the woven wire cloth into strips
Plain woven wire cloth is divided into several narrow strips.

Bonding

Sealing, protection, edging or insertion

For the production of pre-tensioned screen sections, the wire mesh is glued to the screen frame, e.g. under pre-tension. If required, the adhesive is food compliant according to VO (EG) No. 1935/2004, heat or acid resistant or suitable for the use of ultrasonic systems.

The application determines the adhesive The application determines the adhesive The application determines the adhesive
Weld seams are sealed and parts inserted by bonding.

Forming and hooking

Every detail counts when it comes to hook strips

At first glance, hooking of wire cloth seems rather simple. However, the example of screen sections makes the complexity clear. This is because forming and hooking of screening mesh has a direct influence on:

  1. The service life of the screen section
  2. The installation and tensioning of the screen section
  3. The leak densitiy in the screening machine
Clamping screen sections are screening media with screen hooks. Clamping screen sections are screening media with screen hooks. Clamping screen sections are screening media with screen hooks.
Screen sections are more than "just" screening mesh with hook strips.

Cleaning

For rolls, coils and piece goods

Various cleaning processes are available as part of our production. These include, for example, degreasing and aqueous cleaning with and without ultrasonic support.

Aqueous cleaning of wire cloth in rolls is only one of many options. Aqueous cleaning of wire cloth in rolls is only one of many options. Aqueous cleaning of wire cloth in rolls is only one of many options.
Complete wire cloth rolls are cleaned in this continuous ultrasound bath.

Why is the cleaning of wire cloth filters so important in medical technology?

Wire cloth chips in medical technology? Loose wires are unthinkable in this industry. That is why we clean our filter elements made of metal wire cloth particularly intensively.

For example, inhaler screens are cleaned in several steps:

  • Wire mesh cleaning
  • Degreasing edged parts
  • Ultrasound cleaning
  • Screening

More about medical technology products


Plastic injection moulding

Individually or on fully automated production lines

We overmould single- or multi-layered, smooth or pleated wire cloth products with a plastic adapted to your application:

  • Standard plastics (e.g. PA66)
  • Special plastics (e.g. the heat-resistant plastic PEEK)

 

The wire cloth blanks are usually picked up fully automatically and overmoulded with plastic. The wire cloth blanks are usually picked up fully automatically and overmoulded with plastic. The wire cloth blanks are usually picked up fully automatically and overmoulded with plastic.
Cavities (hollow spaces) determine the shape and structure of the plastic edging.

Metal filter with plastic edging

Plastic injection moulding is extremely accurate and versatile

  • Plastic edging protects against injuries from sharp-edged wire cloth.
  • The plastic edge prevents cross-flow of liquids or viscosities and thus serves as a gasket.
  • Several layers of wire cloth are joined together by a plastic overmoulding.
  • Fine wire cloth filters in particular gain stability through plastic overmoulding and also gating.
  • Plastic overmouldings enable easy handling and unproblematic assembly of the final product.
  • Deep-drawn parts in particular are given their individual three-dimensional shape through the use of plastic.

Testing

Quality assurance using standardised, specially developed and certified test procedures

We use various measuring and testing procedures to prove that our wire cloth products meet the respective requirements. All wires and wire cloth made from them are tested in our works laboratory. Furthermore, we pursue a zero-fault strategy in our production. In order to achieve this goal even with large-scale products and to be able to detect possible deviations from standards in a timely manner, these production processes are continuously monitored with the Haver Vision System developed in-house.

HAVER Vision Systems enable 100 percent inspection of the wire cloth products and are integrated into the production process. HAVER Vision Systems enable 100 percent inspection of the wire cloth products and are integrated into the production process. HAVER Vision Systems enable 100 percent inspection of the wire cloth products and are integrated into the production process.
HAVER Vision Systems are used for the visual 100% inspection and monitoring of large-scale products.
Wire cloth testing also includes checking for weaving faults – a key aspect of quality management. Wire cloth testing also includes checking for weaving faults – a key aspect of quality management. Wire cloth testing also includes checking for weaving faults – a key aspect of quality management.
With screen printing mesh, the focus is on wire mesh thickness and mesh accuracy.
Thanks to an on-screen analysis, wire cloth can be certified and calibrated. Thanks to an on-screen analysis, wire cloth can be certified and calibrated. Thanks to an on-screen analysis, wire cloth can be certified and calibrated.
On-screen analysis enables certification and calibration of wire cloth / analysis screens.

The packaging of wire cloth products, e.g. in blister packs, is also fully automated as required. The packaging of wire cloth products, e.g. in blister packs, is also fully automated as required. The packaging of wire cloth products, e.g. in blister packs, is also fully automated as required.
Packaging, for example in blister packs, is integrated into the production automation system as required.

Packaging

From a cardboard box to a blister pack, there are many possibilities

Manual or fully automatic, bulk or individual packaging, returnable or disposable packaging:
Your wishes regarding automation and further processing determine our packaging solutions.



Do you have any questions?
I will be happy to help you:
Andreas Brormann
Head of Business Unit
HAVER & BOECKER OHG
Drahtweberei
Woven Media and Post Weaving Processes
Ennigerloher Str. 64
59302 Oelde, Germany