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Co-Extrusion

Co-Extrusion
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Co-Extrusion

Product catalog summary
Introduction to Co-Extrusion
Co-Extrusion is a growing technology known for its superior barrier properties and versatility, used in markets like food packaging, cosmetics, agrochemicals, and automotive industries. BEKUM is a leading supplier, recognized for high technical standards and reliable performance.

Specifications and Process
The Co-Extrusion process bonds multiple plastics to create multi-layered structures with enhanced properties, allowing up to seven layers. It combines materials like PE and PP with barrier materials such as PA and EVOH, providing protection against oxygen, carbon dioxide, water vapor, and UV radiation.

Applications and Advantages
Co-Extrusion is effective in blow-molded food packaging due to its barrier properties and is used in cosmetics, pharmaceuticals, and automotive parts. It ensures precise wall thicknesses, leading to raw material savings and high output rates, resulting in environmentally friendly and marketable products.

Technical Parts and Standards
In the automotive sector, Co-Extruded parts must meet international safety standards, requiring certified barrier properties and mechanical resistance. BEKUM's systems ensure compliance with these standards.

Environmental Considerations
Co-Extrusion supports recycling by using post-consumer plastics as middle layers and calcium carbonate for environmentally friendly barrier properties, especially in the food industry.

Conclusion
BEKUM's technology offers innovative, practical, and cost-effective solutions, with over 40 years of experience in Co-Extrusion.

Overview of Multi-Layer Fuel Tank Technology
The document describes multi-layer fuel tanks using bonding agents for a permanent bond between layers, enhancing sustainability by recycling production scrap.

Co-Extrusion Process
The process involves multiple extruders and specialized heads to form precise parison profiles, allowing smooth transitions between materials.

BEKUM's Technological Advancements
BEKUM's machines feature advanced systems for precise material distribution and raw material savings, using high-grade steel for durability.

Applications and Industry Impact
There is increasing demand for 3D blow-moulded parts in the automotive sector, with BEKUM's technology known for efficiency and reliability.

Contact Information
Contact details for BEKUM's offices in Germany, Austria, and the USA are provided.
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Catalog excerpts

Co-Extrusion-1

Organic solvents Vitamines, Aromas Qxygen CO2, N2 Security Barrier Layer

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Co-Extrusion-2

Die BEKUM Mehrschicht-Technologie für anspruchsvolle Märkte BEKUM‘s multi-layer technology for demanding markets Weltweit verzeichnet die Co-Extrusion hohe Wachstumsraten. Mit ihren optimalen Barriere-Eigenschaften und vielfältigen Kombinationsund Einsatzmöglichkeiten hat sich die Mehrschicht-Technologie zum Nonplusultra für die unterschiedlichsten Märkte und Aufgaben entwickelt. Co-Extrusion applications are fast-growing in many countries around the world. With its optimum barrier properties and diverse possibilities for combinations and different applications, multi-layer technology has developed...

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Co-Extrusion-3

Das Verfahren innovativ, praxisgerecht, wirtschaftlich The process Innovative, practical, cost-effective Die Co-Extrudierte Verpackung verkaufsfördernd, umweltfreundlich, lagerbeständig Co-Extruded packaging Sales promoting, environmentally friendly, long shelf life Technische Teile vielseitig, langlebig, zertifiziert Technical parts Versatile - durable - certified Die Maschinenausrüstung hoher Wirkungsgrad, zuverlässige Produktion, brillante Ergebnisse The machine equipment Highly efficient, reliable production, excellent results

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Co-Extrusion-4

innovativ - praxisgerecht - wirtschaftlich Steigende Qualitäts-Anforderungen an die Verpackung erfüllt das Mehrschichtbzw. Co-Extrusions-Verfahren. Das Prinzip: Es werden zwei oder mehrere unterschiedliche Kunststoffe miteinander verbunden. In ihrer Kombination weisen sie Eigenschaften auf, die sie bei einzelner Verarbeitung nicht bieten können. Mit diesem Verfahren stehen den unterschiedlichsten Märkten technischwirtschaftliche Lösungen für höchste Ansprüche zur Verfügung. Die in ihrem molekularen Aufbau unterschiedlichen Kunststoffe werden mit separaten Extrudern in den Extrusionskopf eingespeist....

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Co-Extrusion-5

Innovative - practical - cost-effective Schichtaufbau eines 6-Schicht-Co-Ex-Kopfes: Um höchsten Qualitätsansprüchen gerecht zu werden, wird der Schlauch in 8 Fließkanälen mit versetzten Fließnähten gebildet. Cross-section through a Co-Ex parison with 6 layers. The relevant head works with 8 flow channels and displaced welding seams. Inner layer Adhesive layer Barrier layer Adhesive layer Regrind layer Outer layer is now possible for plastic products to penetrate successfully into markets which were previously the exclusive domain of glass or metal packaging. The barrier materials used have outstanding...

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Co-Extrusion-6

verkaufsfördernd - umweltfreundlich - lagerbeständig Verpackungen schützen Füllgüter vor Verderb und Beschädigungen beim Transport, der Präsentation und der Lagerung. Die Qualität der Verpackung spielt dabei eine entscheidende Rolle. Gleichzeitig ist sie - besonders im Lebensmittelund Kosmetikbereich - ein wichtiges Instrument der Verkaufsförderung. Hier machen Verpackungen Märkte. Einen entscheidenden Beitrag für sichere und attraktive Verpackungen leistet die Co-Extrusion für folgende Branchen: Lebensmittel Kosmetik Agrochemikalien Pharmazie Medizin Bi-Ex & Tri-Ex Glossy, soft touch or colour...

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Co-Extrusion-7

Co-Extruded packaging Sales promoting - environmentally friendly - long shelf life Glossy surfaces LDPE, PP, PA, PC as the outer layer Enhanced light and UV barrier For dairy bottles made from HDPE. Combination of a 3-layer bottle with white inner and outer layers and black colored UV absorbent HDPE middle layer. Gas and permeation barrier EVOH for really oxidizing colorants and flavorings, aromatic and malodorous substances, active ingredients or nutrient solutions. The shelf life of high quality products is significantly prolonged. Security layer barrier PA or EVOH for toxic solvents and chemical...

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Co-Extrusion-8

Technische Teile vielseitig - langlebig - zertifiziert An die Herstellung Co-Extrudierter Automobil- und technischer Teile werden extreme Anforderungen gestellt. Internationale Sicherheitsbestimmungen verlangen einen hohen Standard bei der Produktion, um strenge Qualitätsnormen zu garantieren. Technische Teile müssen deshalb … ■ zertifizierte Barriere-Eigenschaften besitzen (z.B. Kraftstoff-Behälter für die Automobil-Industrie) - ■ praxiserprobte mechanische Eigenschaften aufweisen - ■ über eine ausgezeichnete Witterungsbeständigkeit verfügen ■ bei hohen Temperaturen ihre Form bewahren Der Mehrschicht-Kraftstoff-Behälter:...

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Co-Extrusion-9

Technical parts Versatile - durable - certified As a variation of the standard Co-Ex version, in which the different materials are formed simultaneously as a parison (radial layer build-up), in sequential Co-Extrusion the different materials are extruded successively one at a time through the die head (axial parison buildup). This variant of the technical process has become increasingly significant for technical parts, for example air ducts in cars. This involves the bonding together of flexible and hard materials (for example, hard / soft / hard). For the automotive sector, there is now an increasing...

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Co-Extrusion-10

hoher Wirkungsgrad - zuverlässige Produktion - brillante Ergebnisse Die BEKUM-Mehrschicht-Technologie: Vorsprung durch Können Eine über 4 Jahrzehnte entwickelte Erfahrung sowie stetige Weiterentwicklung der Kopf- und Verfahrenstechnik haben BEKUM führend in der Co-Extrusion gemacht. Maschinentechnisch bedeutet Co-Extrusion die Ausrüstung konventioneller Blasautomaten mit mehreren Extrudern und speziellen Extrusionsköpfen. Die Plastifizierung der Rohstoffe erfolgt auf Einschneckenextrudern mit genuteter Einzugsbuchse, wobei für die teuren Funktionsschichten (EVOH, HV) nur wenige kg/h benötigt...

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Co-Extrusion-11

Highly efficient - reliable production - excellent results The special process engineering parameters are monitored by means of a precise Touch-Screen machine control system. As far as the end user is concerned, the blow moulding proves for multi-layer containers is virtually conventional. At the same time, the ability to precisely control the thickness of the functional layer results in raw material savings. Gravimetric material melting systems can be supplied with BEKUM Co-Ex systems and consequently SPC (Statistic Process Control) standards are easily met and documented. The technique ensures...

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