Hoses, Wrapped Articles and Rollers

Rubber Hoses, Wrapped Products & Rollers | Gummi Hansen

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Rubber Hoses with and without Reinforcements

WRAPPED ARTICLES AND CURVED HOSES

Rubber Hoses for Industrial Applications

Rubber hoses perform a wide variety of tasks in industry and trade, frequently requiring them to withstand severe mechanical, thermal, and chemical loads. For these demanding industrial applications, we have been developing and manufacturing reliable rubber hose solutions for decades.Whether delivery hoses for high operating pressures, robust dredge hoses, or custom-designed special hoses – we tailor the construction, material, and specifications to the respective area of application. Benefit from our long-standing expertise in the development and manufacture of technical hoses.

Rubber Hoses with and without Reinforcement Plies

Depending on requirements, our hoses can be manufactured without reinforcement or with various reinforcement plies. In designs with a fabric insert, the textile layer acts as a pressure carrier, increasing the load capacity of the hose. For exceptionally demanding operating conditions, designs with multiple pressure carriers and a concealed steel wire helix are also available. The integrated helix provides the hose with additional stability and supports reliable operation in corresponding applications. Alternatively, hoses can be manufactured with a concealed copper strand. Depending on the design and desired function, a variety of technical requirements can be met.

Connections, Couplings and Flange Systems

Alongside the actual hose construction, the right couplings play a major role in ensuring reliable integration into existing plants and systems. We therefore manufacture our rubber hoses with a wide range of fittings, connections, and flange systems. Custom designs and specialised connection solutions can also be accommodated according to the respective installation scenario. This includes the professional execution of external swaged/banded couplings and fittings, ensuring that the hose and connection technology are perfectly matched. 

Custom Manufacturing for Large Diameters and Lengths

In addition to standard designs, we realise customer-specific hoses for unusual dimensions and operating conditions. Custom designs are available with diameters up to 500 mm and lengths up to 40 m. The construction and configuration can be individually specified – for instance, regarding fabric inserts, pressure carriers, steel wire helices, copper strands, couplings, and flange systems. Our range of services includes: 

  • Rubber hoses for industrial applications
  • Pressure hoses with various pressure carriers
  • Dredge hoses for demanding operating conditions
  • Hoses with or without fabric inserts
  • Designs with a concealed steel wire helix
  • Designs with a concealed copper strand
  • Custom fittings and connections
  • Hoses with various flange systems
  • Custom designs up to 500 mm in diameter
  • Hose lengths up to 40 m 

Bespoke Rubber Hose Solutions

Every hose application places distinct demands on material, construction, pressure resistance, flexibility, and connection. Consequently, we do not develop our solutions based on a rigid template, but focus entirely on the specific application.

Put the experience of Gummi Hansen to work for your specialized hose application. We support you in selecting and configuring suitable rubber hoses and manufacture custom solutions for demanding technical and industrial applications.

WRAPPED ARTICLES AND curved hoses

Wrapped Engineered Components for Technical Applications

When technical products with complex geometries, custom dimensions, small production runs, or without high tooling costs are required, wrapped rubber components offer an economical and flexible solution. We develop and manufacture wrapped products, rubber hoses, and bends in various shapes and designs for a wide range of industrial and commercial applications.Our custom-manufactured rubber products are engineered for optimal functionality and tailored to meet specific technical requirements. We can supply both non-reinforced products and multi-layer designs with a variety of reinforcement layers.

Custom Wrapped Rubber Products

We possess decades of experience in solving specialized technical challenges. This expertise is directly integrated into the selection of suitable rubber compounds, customized shaping, and the choice of the appropriate manufacturing method.Depending on the application, different manufacturing and assembly techniques are used. These include mandrel-wrapped components as well as single- and multi-layer designs. Surface texturing and material configurations can also be individually tailored to the subsequent function.Our product range includes, for example:

  • cylindrical and conical rubber hoses and hose sleeves
  • single- and multi-layer hose rings
  • pinch valves
  • sleeves and bellows
  • expansion joints
  • coupling pipe pieces
  • bag holders and inflatable pipe packers
  • funnel sections and reducing pieces with flanges
  • downpipes and collars
  • rubber straps
  • tubing for peristaltic pumps
  • seals and sealing rings

Rubber Hoses, Seals, and Technical Engineering Components

The manufacture of wrapped products enables the realization of custom geometries that can sometimes only be implemented with high tooling effort or high mould costs using traditional moulding processes. Especially for small batch sizes and custom-made products, wrapped articles therefore offer an economically attractive alternative.

In addition to classic rubber hoses, we manufacture complex engineering components such as pinch valves, expansion joints, sleeves, and hose rings. Depending on the field of application, the products can be reinforced with suitable plies and constructed in multiple layers.

In doing so, we take into account the requirements for elasticity, resistance, pressure load, flexibility, and the desired service life. The selection of the suitable rubber or elastomer compound is made according to the subsequent application.

Precision Manufacturing to Custom Requirements

From the initial idea to the finished product, we accompany our customers in the development of custom wrapped rubber articles. Our experience in material selection, shaping, and fabrication enables the implementation of even demanding technical requirements.

Whether rubber hose, seal, sealing ring, hose ring, sleeve, socket, expansion joint, or pinch valve – we develop and manufacture high-performance engineering components for a wide variety of industrial applications.

Leverage our many years of know-how to turn your ideas into functional and economical rubber products and technical rubber goods.

ROLLER COVERS AND COMPLETE ROLLERS

Elastomeric Rollers and Roller Covers

Elastomeric rollers and roller covers ensure precise, reliable, and cost-effective process workflows across numerous industrial applications. Our high-quality roller covers are custom-tailored to the specific application and meet even the most demanding technical requirements.

Whether for the precisely metered transport of ultra-fine paper in the printing and fine printing industries or the powerful operation of a squeeze roller in industrial systems: our rollers impress with reliable performance, high load capacity, and precise execution.

Roller Covers for Diverse Applications

We manufacture a variety of elastomeric rollers for technical and graphic applications. These include pressure rollers, drive rollers, feed rollers, ink transfer rollers, dampening rollers, counter-pressure rollers, squeeze rollers, and transport rollers, among others.

Depending on the field of application, the roller covers are produced using suitable rubber compounds and matched to the respective requirements. Factors such as mechanical load, chemical exposure, temperature, operating speed, and the desired surface finish play a crucial role here.

Our expertise in roller rubber lining enables us to reliably solve even demanding tasks. From selecting the appropriate rubber compound and manufacturing method to the precise surface finishing, every step of the process is tailored to the roller's subsequent function.

Elastomeric Rollers for Industry and Technical Applications

Our rubber rollers and roller covers are used across various sectors, most notably:

  • Printing and graphic industries
  • Chemical industry
  • Conveyor and materials handling technology
  • Paint and varnish industries

Our elastomeric rollers can be engineered for highly diverse requirements – ranging from the transport of delicate materials to the heavy-duty processing and conveying of goods.

Custom Roller Rubber Lining and Precision Manufacturing

For many years, we have specialized in the manufacture and processing of roller covers. Our know-how in selecting suitable rubber and elastomer compounds, as well as in roller rubber lining, enables us to provide tailor-made solutions for the most diverse technical applications.

We manufacture various rollers and elastomeric roller covers with diameters of up to 400 mm and overall lengths of up to 2,500 mm. The primary focus is always on the optimal alignment of material, manufacturing process, and surface finishing for the respective application.

Whether transport roller, pressure roller, drive roller, ink transfer roller, or squeeze roller – we develop and manufacture high-quality roller solutions to ensure your processes run reliably and smoothly.

  • Pressure rollers / Nip rollers
  • Drive rollers
  • Applicator rollers
  • Metering rollers
  • Feed rollers
  • Ink transfer rollers
  • Dampening rollers
  • Counter-pressure rollers
  • Flexo plate rollers / Plate cylinders
  • Squeeze rollers
  • Transport rollers and many others...

The Right Production Technology for Any Batch Size and Component Dimension

Dimensionally Accurate Thin Uncured Rubber Sheets

The foundation for wrapped products and roller covers consists of thin, high-tack uncured rubber sheets drawn on the calender. Textile reinforcements required to strengthen the products are also rubber-coated on the calender. These dimensionally accurate sheets are wound layer by layer onto various shaped mandrels and cores. All standard rubber compounds can be processed.

  • High-tack compounds form the foundation
  • Dimensionally accurate calendered uncured sheets
  • All standard rubber compounds

Mandrels and Cores

For the production of wrapped products and bends, we use rotationally symmetrical mandrels made of steel and aluminium with a wide variety of geometries.Cores for elastomeric roller covers can be supplied by us upon request, or we can use customer-supplied cores. Existing old covers can also be stripped by us.

  • Mandrels with various geometries
  • Mandrels made of steel and aluminium
  • Complete rollers or covers onto supplied cores

Wrapped Designs

In the wrapping process, dimensionally accurate and high-tack uncured rubber sheets drawn on the calender are wound layer by layer onto various shaped mandrels and cores. In this way, multi-layer products such as hose rings and hose sleeves can also be manufactured from a variety of rubber compounds. To provide reinforcement and stabilization, particularly for bends, we also use rubber-coated textile inserts.

  • Textile reinforcements for high demands
  • Multi-layer structure for varying operating conditions
  • Hose sleeves and hose rings

Pull-on Designs

For thick-walled, single-layer wrapped products, and especially for roller covers, unvulcanised extruded blanks – which are usually tubular – are pulled onto the mandrels or cores by hand. For small rollers subject to low operational stress already vulcanised hose sleeves are pulled under tension onto prepared, bare metal cores and subsequently finished.

  • Extruded tubular blanks for thick-walled, single-layer wrapped products
  • Vulcanised blanks as covers for rollers subject to low operational stress

Vulcanisation in Autoclaves

The vulcanisation of wrapped products and roller covers is carried out in autoclaves. To allow the individual layers to fuse together properly, establish a secure bond to the core, and give the product its final structural integrity, the items are wrapped with curing tape prior to vulcanisation. It is only through vulcanisation that the textile reinforcements become permanently embedded.

  • Only through vulcanisation are the individual layers permanently bonded into a single unit
  • Taping prevents excessive flowing and sagging during thermal heating
  • Secure bonding to the prepared bare metal core

Efficiency by professional coordination of internal and external processes

Mechanical Machining

Ready-to-install products made from wrapped blanks. After vulcanisation and once they are released from the supporting textile bandages, the vulcanised blanks are finished by turning, grinding, cutting, or parting-off. In addition to mechanical machining, complex components can also be assembled by bonding them with other parts.

  • Wrapped products are mechanically machined
  • Turning, grinding, cutting, parting-off
  • Assembly of complex components

Surface Machining

All roller covers are manufactured with an oversize, making mechanical surface processing necessary in every case. For subsequent use, concentricity and surface finish are of paramount importance. Fine grinding is used for the transfer of inks and finishes, while rough grinding ensures a good traction effect.

  • Specific surface profiles can be produced
  • Corrugations, grooves, and cambers
  • Rough grinding ensures an excellent traction effect

Product-Specific Testing

We perform various product-specific tests on the finished product. These include concentricity testing and inspection of the surface finish for elastomeric roller covers, pressure testing for reinforced bends and pneumatic seals or control elements, as well as tightness, compressibility, and deflection paths for expansion joint hose sleeves.

  • Acceptance testing according to customer-specific test plans