ESI Extrusion Services, Inc.

Leader in the design and manufacture of automated downstream extrusion equipment and systems.

25 Plus Years of Continuous Innovation

ESI has been supplying top quality downstream extrusion equipment to fortune 500 companies since 1981.

Product Line: Coiling / Let-Off / Accumulators

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ESI - Coiling/Let-off/Accumulators

ESI manufactures a very wide range of coilers, accumulators, let-offs and panners. In addition to our wide range of standard coiling equipment ESI has extensive experience in providing custom coiling and web handling systems for a wide variety of industries. Coilers are available in single or dual station designs and can be supplied in automatic cut-and-transfer…

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ESI - Coiling/Let-off/Accumulators

ESI manufactures a very wide range of coilers, accumulators, let-offs and panners. In addition to our wide range of standard coiling equipment ESI has extensive experience in providing custom coiling and web handling systems for a wide variety of industries. Coilers are available in single or dual station designs and can be supplied in automatic cut-and-transfer configurations, some incorporating automatic banding and coil ejection.

 
ESI supplies sheet windup systems with web guiding and optional slitting and edge trim. Paper or plastic liners can also be applied to the sheets and anti-static bars can be mounted. Very tight control of product tension can be provided.


Coiling systems can be supplied with servo motion control systems and recipe functions for storing of specific product parameters. Due to the high degree of automation on ESI cut-and-transfer systems with banding and part ejection, machine payback due to labor saving can be extremely quick.


Accumulators and let-offs or coilers can be supplied as a system with co-coordinated controls. Very heavy-duty let-offs and accumulators can be supplied for metal reinforcement often used on automotive profiles and hoses.

 

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Coilers

ESI coilers are available in single or dual station designs. When two coiling stations are provided, operator switches stations when one reel is full while other station is coiling. Coilers can be supplied with traverse mechanisms for layering extrudate side by side on a wide reel or without traverse for strip winding applications. Mechanical traverses are driven by the main coiler drive and allow the operator to mechanically adjust the ratio on the traverse mechanism. Upgraded electronic traverses are also available which incorporate a separate drive motor, which is electronically ratioed to the main coiler drive. Coilers are supplied with dancer mechanisms ...

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Cut-and-Transfer coiler

ESI Cut-and-transfer coilers automatically cut the extrudate to length, index coiling stations and start the next coil without operator intervention. This can greatly reduce labor by allowing the operator to be assigned additional tasks, instead of waiting for the reel to complete. On high speed extrusion lines or lines which run short length coils it is often necessary to allocate an operator exclusively to the coiling station to change reels. The time taken to manually change reels often results in a significant length of extrudate being accumulated during the changeover causing extrudate to pile up on the floor and the operator to run the coiler at a very high speed to catch up.

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Panners

ESI Panners are frequently utilized in the rubber industry for automatically winding product in a ‘lay flat’ condition onto a pan (e.g. uncured rubber tube or hose). Extrudate can be taken from the panner and cured in an autoclave or stored for later application of reinforcement. Panners can be single station or dual station with automatic transfer between the pans. Machines are typically servo controlled and consists of a driven lead-in conveyor, a driven support turntable and a traverse mechanism to move the turntable laterally.  Pan rotational speed and pan lateral position are automatically adjusted to lay the product in spirals with preset gap between the extrudates.

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Let-Offs

Powered Let-Offs are designed to unwind profile from coiled reels. They are typically utilized on crosshead extrusion lines and can be used for letting off metal reinforcement (e.g. automotive seal lines) or extruded tubes with or without reinforcement (e.g. hose lines). Let-offs are often supplied in conjunction with accumulators to ensure continuous supply of material to the extrusion line. Let-offs can also be used for transfer of bulk coiled extrudate to smaller consumer sized packages. Let-offs are typically dancer controlled to adjust reel speed as effective reel diameter changes and can be designed as single station or dual station. Machines are designed for a ...

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Accumulators

ESI's accumulators are designed to provide accumulated storage of flexible material during line operation without having to shut the line down. ESI manufactures accumulators for use ahead of the extruder on crosshead extrusion lines such as metal reinforced profiles or for use at the end of the extrusion line ahead of windups or on lines requiring additional cooling. Accumulation is typically vertical to minimize floor space and is primarily used during reel changeovers. Accumulators consist of a series of free turning upper and lower rolls.  The upper rolls are moved up and down on a linear slide and can be motor driven or pneumatic, while lower rolls are ...

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