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Automatic Mix And Dosing Device For straight yarn Extrusion Line - High Precision Masterbatch Blending System

  • Weighs, not volumes — materials are measured by weight, so the recipe holds even when pellet bulk density drifts between lots.
  • Set the ratio, not the arithmetic — operators enter the target weight ratio directly; nobody calculates percentages at the machine any more.
  • Self-compensating — the controller corrects for material fluctuation automatically, and the load-cell logic is unaffected by the shock and vibration of a running extrusion line.
  • Two mixer sizes: MH-300-4S at up to 170 kg/h (four horizontal distribution valves) and MH-300-6S at up to 130 kg/h (six valves).
  • Colour touch screen with a manual material-release button — the whole cleaning job is one press, not a spanner.
  • Matching vacuum loader ML-3-4 — four 7.5 L suction cylinders (six available), 4.0 HP motor, 4 m vertical and 10 m horizontal conveying, up to 200 kg/h.
  • Built to be cleaned in minutes — hopper discharge port, compressed-air tube and air gun, air-blow device and a reserved anti-bridging port.
  • Installs directly on the moulding/extrusion equipment; 230 V/1/50 Hz mixer and 380 V/3-phase loader.
  • Turnkey from JDS: layout design, on-site installation, operator training, process optimisation.
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Product Overview

The Automatic Mix And Dosing Device For Extrusion Line, developed by JDS Textile Machinery Co., Ltd., is a cutting-edge solution designed to streamline material handling in extrusion processes. This integrated system combines a high-precision mixing section and an efficient suction section, enabling automatic, consistent feeding of masterbatch and additives. By eliminating manual intervention, it not only enhances production efficiency but also ensures superior product quality through precise dosing, while significantly reducing labor costs.

Ideal for modern extrusion lines, this device is engineered to adapt to varying production demands, offering reliability and flexibility for manufacturers. Whether handling new materials or recycled inputs, its advanced design ensures stable performance, making it a critical ancillary equipment for optimizing extrusion workflows.

Technical Specifications

Mixer — MH-300-4S / MH-300-6S

Parameter

MH-300-4S

MH-300-6S

Mixing volume (new material)

Max. 170 kg/h

Max. 130 kg/h

Distribution valves

Four horizontal valves

Six valves

Control

Colour touch screen, friendly HMI, manual material release button

Same

Electricity consumption

230 V / 1 phase / 50 Hz

230 V / 1 phase / 50 Hz

Measurement method

By weight; direct weight-ratio setting

Same

Compensation

Automatic for material fluctuation; unaffected by shock and vibration

Same

Cleaning

Storage hopper with discharge port; compression tube and air gun

Same

Installation

Directly on the moulding equipment; air-blow device; reserved anti-bridging device

Same

Suction / vacuum loader — ML-3-4

Parameter

Value

Suction cylinder capacity

7.5 L × 4 pcs (7.5 L × 6 pcs available)

Suction pipe and air duct diameter

1.5″

Motor power

4.0 HP

Voltage

380 V / 3 phase

Vertical conveying height

4 m

Horizontal conveying length

10 m

Maximum conveying capacity

200 kg/h (160 kg/h for the extended six-cylinder setup)

Sizing for your line depends on throughput, masterbatch let-down ratio and material bulk density — confirm with our team before ordering.

Sizing the System to Your Line

Your situation

Recommended configuration

Reasoning

Single straight-yarn line, standard colour work

MH-300-4S + ML-3-4 (4 cylinders)

170 kg/h mixing with 200 kg/h conveying leaves headroom

Multiple colours changed daily

MH-300-6S + ML-3-4 (6 cylinders)

Six valves and quick-clean hopper shorten changeover

Long conveying run from a central silo

ML-3-4 with 6 cylinders

10 m horizontal and 4 m vertical with capacity to spare

Frequent regrind use

Weight-based mixing is essential

Regrind bulk density varies most — the case where volumetric feeding fails hardest

Tight shade tolerance / premium turf

Consider loss-in-weight (gravimetric) dosing

If you need ±0.5% or better across a 24-hour run, discuss the next tier with us

A sizing warning worth repeating. Undersizing is the most common buying error in dosing equipment. Size for your maximum expected throughput, not your average, and leave 15–20% headroom for higher-concentration recipes and future growth.

Application Scenarios

Artificial grass yarn extrusion lines. Masterbatch, UV stabiliser and colour pigment must hit the melt at a fixed ratio; a drift of a fraction of a percent becomes a visible shade difference across a 4 m-wide roll.

Monofilament and multifilament textile extrusion. The same weight-based logic applies wherever colour or additive concentration is a specification rather than a preference.

Recycled-material processing. Regrind density swings far more than virgin pellet density. This is precisely where volumetric feeders lose control and weight-based dosing holds the recipe.

Multi-colour production and frequent changeovers. Manual release, hopper discharge and air-gun cleaning turn a colour change from a half-shift job into a routine task.

Plants scaling from one line to three. Turnkey layout design and system integration mean the second installation is a repeat, not a redesign.

Quality-driven export producers. When a European or US buyer specifies colour tolerance in the purchase contract, the dosing system is what lets you sign that clause.

Comparison — Volumetric vs Weigh-Based vs Loss-in-Weight

Volumetric feeder

This system (weight-based batch)

Loss-in-weight (gravimetric)

Principle

Screw speed × assumed density

Each component weighed, then mixed

Continuous mass flow, real-time correction

Typical accuracy

±1–3% (drifts with fill level)

Material variation compensated automatically

±0.1–0.5%

Bulk density change

Manual recalibration needed

Automatic compensation

Automatic, continuous

Colour changeover

Moderate

Fast — release button, discharge port, air gun

Fast

Best fit

Stable single-grade, low-cost additives

Grass yarn, monofilament, regrind-heavy lines

Premium film, tight-tolerance colour, 24/7 campaigns

Relative investment

Lowest

Mid

Highest

FAQ

Q: How is this different from a normal volumetric colour mixer?

A: A volumetric unit meters by screw speed and assumes a fixed bulk density. This system measures materials by weight, so when pellet density, regrind shape or hopper fill level changes, the controller compensates instead of drifting. Operators also enter the weight ratio directly instead of calculating a percentage.

Q: What accuracy can I expect?

A: The published specification is weight-based measurement with automatic compensation for material fluctuation, and the controller is unaffected by shock and vibration — the practical result is that the ratio holds across a shift and across material lots. If your process needs a stated ±0.5% or tighter figure for a certification, ask us for the gravimetric tier and its documented accuracy rather than assuming a number for this unit.

Q: Which model do I need, MH-300-4S or MH-300-6S?

A: The 4S is specified at up to 170 kg/h of new material with four horizontal distribution valves; the 6S at up to 130 kg/h with six valves. Higher throughput is not automatically better — the 6S exists for finer distribution and more components, so match the choice to your recipe and throughput, not just to the bigger number.

Q: Can the vacuum loader reach my silo?

A: The ML-3-4 handles 4 m vertical and 10 m horizontal through 1.5-inch lines at up to 200 kg/h with four cylinders (160 kg/h with six). Send us your layout and we will confirm pipe routing before you buy.

Q: What power supply does it need?

A: The mixer runs on 230 V, single phase, 50 Hz; the vacuum loader on 380 V, three phase, with a 4.0 HP motor. Confirm your site supply at quotation — regional variants exist.

Q: How long does a colour change take?

A: The design is built for it: manual material release button, storage hopper with discharge port, compression tube and air gun, plus an air-blow device. Exact time depends on the colour contrast and how thoroughly operators clean, but the hardware removes the dismantling step that usually dominates changeover.

Q: Will it fit an existing line that is not from JDS?

A: It installs directly on the moulding/extrusion equipment, and we customise to your factory layout and process parameters. Send photographs of the machine throat and the available space, and we will confirm the mounting arrangement.

Q: Do you install and train on site?

A: Yes — professional on-site installation to integrate with your existing extrusion line, plus hands-on operator training covering operation, process optimisation and troubleshooting, with support available after installation.

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