Polymer Melt Transfer Tooling · Since 1986

Extrusion dies, extruder adapters & breaker plates

Custom extrusion tooling from the extruder outlet to the die: strand dies, adapters, breaker plates, crossover pipes and elbows. Coordinate the flow geometry, steel and surface treatment with one manufacturing team.

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Low-temperature pulse plasma nitrided stainless extrusion strand die showing internal melt-distribution passages

3,000 kgGrinding & wire EDM capacity

1,500 mmSurface-grinding envelope length

1,200 × 1,200 mmIn-house ion nitriding chamber

5 GradesPatt extrusion tooling steels

Melt-path components

Custom tooling that connects the extrusion line

Every transition between the extruder barrel, melt pump, screen changer and die affects residence time, pressure drop, sealing integrity and cleaning downtime. Patt machines both new custom assemblies and retrofit transition pieces to match existing line centrelines.

Strand dies & die components

Strand pelletizing dies, die bodies, orifice plates, die lips and internal melt-distribution manifolds machined, ground and polished for uniform flow balance and clean strand discharge.

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Extruder-to-filter adapters & flanges

Custom transition adapters, C-clamp flanges, split rings and bolted spools connecting extruders, melt filters, gear pumps and dies with coordinated bore transitions and high-pressure sealing faces.

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Heated crossover pipes & elbows

Melt-transfer pipework and angled elbows built around plant layout, connection orientation, heater-band zoning, melt-pressure sensor ports and streamlined internal transitions that avoid dead spots.

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Machined & nitrided extrusion tooling in detail

This stainless-steel strand die illustrates Patt’s integrated workflow: CNC machining and precision grinding of internal flow passages and mating faces, followed by low-temperature pulse plasma (ion) nitriding to protect the die face and strand orifices against cleaning-tool damage, abrasion and polymer corrosion.

Low-temperature nitrided stainless strand die · internal flow passages

Strand die · die face and strand openings

Extrusion die, adapter and pipework fabrication scope

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Extrusion die, adapter and melt-transfer pipework capabilities
Component family	Engineering, machining and surface-treatment focus	Typical materials & treatments
Strand dies and die assemblies	Internal melt-distribution channels, transition geometry, strand-hole arrays, die faces and precision ground sealing surfaces designed for low hang-up and repeatable cleaning.	Patt PEA, PEA+, Patt Corrosion, H13, 420 / 17-4PH / 316L stainless + pulse plasma / ion nitriding
Extruder-to-filter & filter-to-die adapters	Bore diameter transitions (circular-to-circular or circular-to-slot), high-pressure metal-to-metal sealing faces, bolt circles, alignment dowels and standard ½-20 UNF melt-sensor / thermocouple ports.	Patt Structural, PEA, H13, 4140 / 4340, precipitation-hardening stainless steels
Heated crossover pipes & elbows	Custom centreline offsets, multi-axis melt-transfer routing, matched heating zones, smooth internal transitions and disassembly access for pyrolysis or mechanical cleaning.	Patt PEA, Patt Corrosion, H13, nitriding steels and corrosion-resistant alloys
Flat & wave-shaped breaker plates	Precision-drilled and wire-EDM flow passages and screen-support ribs, including Patt’s wave-shaped breaker plate upgrade delivering 1.8× active screen area in approximately +15 mm width.	H13, Dievar, Patt Tool, Patt Structural + conventional or low-temperature ion nitriding

Single-source accountability

Tooling steel, precision machining and ion nitriding under one roof

Extrusion dies and adapters frequently fail at the intersection of base-metal strength, thermal distortion and surface wear or acid corrosion from PVC, CPVC, flame-retardant compounds and post-consumer recycled (PCR) resins. Producing the component in one facility allows Patt to coordinate stock allowances, stress relief, finish grinding and surface hardening as a single engineered sequence.

Proprietary Patt tooling steels: PEA (48–49.5 HRC), Structural (51.5–53.3 HRC), PEA+ (47.5–50.5 HRC), Patt Tool (50–57 HRC) and Patt Corrosion (42–48 HRC)
In-house pulse plasma / ion nitriding: Furnace chamber up to 1,200 × 1,200 mm (120 × 120 cm) and 2,000 kg (2 metric tons), with documented 250 µm+ H13 diffusion cases and low-temperature stainless S-phase / expanded-martensite routes
Wave-shaped breaker plate retrofits: 1.8× filtration screen area for existing screen changers and extrusion lines

Patt D-size wave-shaped breaker plates with machined screen-support surfaces and flow openings — Patt D-size wave-shaped breaker plates (1.8× screen area)

Documented equipment envelope

Machining and furnace capacities for extrusion tooling

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Documented machining and nitriding envelope · final suitability is confirmed from the drawing
Process	Machine / chamber envelope	Maximum workpiece	Maximum weight
Precision surface grinding	1,500 × 1,000 × 900 mm59.06 × 39.37 × 35.43 in	Drawing review required	3,000 kg6,614 lb
Wire EDM	800 × 600 × 505 mm31.5 × 23.62 × 19.88 in	1,250 × 1,020 × 505 mm49.21 × 40.16 × 19.88 in	3,000 kg6,614 lb
CNC milling	840 × 840 × 760 mm33.07 × 33.07 × 29.92 in	940 × 940 × 1,000 mm37.01 × 37.01 × 39.37 in	1,500 kg3,307 lb
CNC & centre turning	670 mm swing26.38 in swing	2,000 mm between centres78.74 in between centres	Drawing review required
Pulse plasma / ion nitriding	1,200 × 1,200 mm (120 × 120 cm)47.24 × 47.24 in (120 × 120 cm)	Geometry & fixture review	2,000 kg (2 metric tons)4,409 lb (2 metric tons)

Specifications are configuration-dependent and are confirmed during engineering review of your part drawings.

Application questions

Can Patt fabricate custom adapters to integrate a melt filter into an existing extrusion line?

Yes. Whether you are installing a Patt Rotary III, Rotary IV or Colossus system or connecting third-party extruders, melt pumps and dies, Patt designs and machines custom inlet/outlet adapters, flanges and heated crossover pipes to match your line heights, bolt patterns and bore diameters.

Which steel and surface treatment should be used for corrosive PVC or recycled PCR extrusion dies?

For corrosive condensates or frequent hydrolysis/pyrolysis cleaning, Patt offers stainless and precipitation-hardening tooling grades (PEA, PEA+ and Patt Corrosion) paired with low-temperature pulse plasma ion nitriding so the working surface resists wear, galling and scraper damage without stripping stainless corrosion resistance.

Our process

From your process to the finished component.

01
Define the duty
Review the polymer or part, operating conditions, drawings and production targets.
02
Engineer the fit
Coordinate flow geometry, material, surface treatment and the installation envelope.
03
Manufacture & inspect
Bring machining, nitriding and dimensional checks together in our Quebec facility.
04
Support production
Discuss installation, operation, cleaning and ongoing service with the team who built it.

Patt Technologies