Plastic Auxiliary Equipment for Recycling Lines

Plastic Auxiliary Equipment Is Bought for a Line, Not on Its Own

Nobody sets out to buy an auxiliary machine. The question is always whether the line already being specified needs one, and the honest answer is often no. Plastic auxiliary equipment earns its place when a specific problem exists upstream or downstream, not because a complete line is supposed to have it. SUHUI supplies three units in this category: a high speed mixer for compounding and pre-drying ahead of extrusion, a film squeezer granulating machine that sits at the dewatering end of a PP PE film washing line, and a PET solid state polymerization system for raising intrinsic viscosity. Each one attaches to a particular main line, so tell us the line first and the auxiliary list follows from it.

Machine Range

Products in This Auxiliary Machine Category

Higher Speed Mixer

The SUHUI high speed mixer is an industrial hot mixer or hot/cold mixer combination system for PVC dry blend, PP, PE, ABS, WPC premix, masterbatch, filler blending and plastic compounding....

Plastic Film Squeezer Granulating Machine

SUHUI plastic film squeezer granulating machine processes wet PP/PE film directly after washing, combining squeezing, dewatering, melting, and pelletizing in one compact unit. Capacity range: 300-750 kg/h.

PET Solid State Polymerization System

The SUHUI PET Solid State Polymerization (SSP) System upgrades low-IV PET chips, PCR PET flakes and virgin PET material into higher-IV resin for bottle-grade, fiber-grade and engineering plastic applications. The...

Selection Guide

Which Auxiliary Machine Fits Your Process?

Material / project situation	Recommended machine	Why it fits
Compounding, pre-heating or drying before extrusion	Higher Speed Mixer	Blends resin with filler, masterbatch and additives while friction heat drives off surface moisture. Needed where you compound your own formulation; unnecessary if you buy ready-mixed pellets.
Washed film carrying too much water for the pelletizer	Plastic Film Squeezer Granulating Machine	Squeezes and densifies washed film in one pass, taking it to a moisture level and bulk density the extruder can feed. The most commonly needed unit in this category, because film out of a washing line is rarely dry enough on its own.
Recycled PET that has to reach bottle or sheet grade	PET Solid State Polymerization System	Raises intrinsic viscosity after pelletizing so rPET can re-enter higher-value applications. A significant capital item, and only worth it if your buyer actually pays for the higher grade.
You are not sure any of these apply	Send the line layout instead	Auxiliary equipment is the easiest place to overspend, because it is quoted as a list of add-ons rather than judged against a problem. Describe the line and the symptom you are trying to fix and we will say which of the three, if any, is warranted.

How Auxiliary Machines Fit Into a Line

01 Mixing and pre-drying Ahead of the extruder. Friction heat in a high speed mixer removes surface moisture, but it is not a substitute for a proper resin dryer on hygroscopic materials.
02 Squeezing and dewatering After washing, before pelletizing. This is where most of the residual water in film is actually removed, and it decides how hard the downstream extruder has to work.
03 Feeding and conveying Between stages. Usually supplied as part of the main line rather than as a separate purchase, which is why it does not appear as a product here.
04 Pelletizing support Densified film feeds far more consistently than loose flake. Feed instability, not extruder capacity, is the usual reason a pelletizing line misses its rated output.
05 Material upgrading After pelletizing. Solid state polymerization raises PET intrinsic viscosity so the pellet can go back into bottle or sheet rather than into fibre.

Which of the Three Your Line Actually Needs

Each unit answers a different problem and attaches to a different main line. Read down the column for the machine you are considering, and pay most attention to the row that says when to skip it.

Question

High Speed Mixer

Film Squeezer

PET SSP

Attaches to

MixerAhead of an extrusion line, most often PVC profile or pipe.

SqueezerBetween a film washing line and a pelletizing line.

SSPAfter a PET pelletizing line, as a final upgrading stage.

Problem it solves

MixerFiller and additives will not disperse evenly by hand, and cold resin feeds inconsistently.

SqueezerWashed film holds too much water and too little bulk density for the extruder to feed steadily.

SSPRecycled PET pellet has an intrinsic viscosity too low for bottle or sheet applications.

Skip it when

MixerYou buy ready-compounded pellets, or run unfilled PP and PE where there is nothing to blend.

SqueezerYou are selling washed flake rather than pelletizing, or running rigid material that dewaters easily.

SSPYour rPET goes into fibre, strapping or non-food sheet. Those grades do not pay for the extra viscosity.

What happens without it

MixerColour streaks and inconsistent filler loading show up in the finished profile.

SqueezerThe pelletizer surges and vents steam, output falls well below rating and pellet quality drifts.

SSPThe pellet still sells, just into a lower-value market. This is a commercial loss, not a technical failure.

Common mistake

MixerTreating it as a dryer. It removes surface moisture only, not moisture absorbed into the resin.

SqueezerUndersizing it to match the washing line rather than the pelletizer it has to feed.

SSPBuying it before securing a customer who pays a premium for bottle-grade rPET.

Film squeezer

$28,000–40,000

Published reference range. Mixer and SSP are quoted per project, since both are sized from formulation and throughput rather than from a model list.

Plastic Auxiliary Equipment SUHUI Does Not Supply

Worth stating plainly, because buyers arrive at this page looking for equipment we do not build. Knowing that in the first minute is more useful than a quotation that arrives a week later.

Resin dryersA plastic dryer machine of the hopper or desiccant type is not part of our range. The high speed mixer removes surface moisture through friction heat, and washing lines have their own thermal drying stage, but neither replaces a dedicated dryer where PET or PLA needs one before extrusion.
Central conveying and feeding systemsVacuum loaders, silos and plant-wide material handling. Conveying between stages of a SUHUI line is included in that line, but plant-level systems are a separate trade.
Chillers and cooling water plantCooling water is required by almost every line we build and is normally sourced locally, since capacity depends on your ambient conditions and existing plant utilities.
Crushers, shredders and granulatorsThese are size reduction machines rather than auxiliaries, and we do build them. They sit in the crusher and shredder category rather than here.

If a supplier quotes you every auxiliary on the list without asking what your line does, the list is a price sheet rather than a recommendation. Send the main line specification and the symptom you are trying to fix, and expect to be told which items you can leave out.

Before You Ask

What to Send Before Requesting a Quote

To receive a more accurate recommendation, send your material type, material form, contamination level, required capacity, target output, plant space, local voltage and destination country. Material photos or videos are also helpful.

Material type: PET, HDPE, PP, PE, PVC, ABS, PS or mixed plastic
Material form: bottle, film, bag, pipe, lump, profile, flake, pellet or powder
Material condition: clean, dirty, wet, oily, labeled, baled or loose
Target output: flakes, pellets, pipe, profile or finished product
Capacity requirement: kg/h or tons/day
Destination country and voltage
Existing equipment, if any

Request an Auxiliary Machine Recommendation

Tell us your material and target output. We reply with practical recommendations, not generic sales replies.

Frequently Asked Questions

What is an auxiliary machine?

Auxiliary machines support main recycling and extrusion lines with mixing, drying, squeezing, feeding, conveying and material upgrading functions.

Do I need auxiliary equipment for a complete line?

Most complete lines include auxiliary equipment. The exact list depends on material condition, layout and the target output of your project.

When is a film squeezer used?

A film squeezer dewaters and densifies washed film before pelletizing, improving feeding stability and pellet quality.

What information is needed to choose auxiliary machines?

Describe your existing line, material type and condition, capacity and the process stage you want to improve.

How much does auxiliary equipment cost?

The film squeezer granulating machine has a published reference range of USD 28,000 to 40,000 depending on capacity. The high speed mixer and PET solid state polymerization system are quoted per project, because both are sized from your formulation and throughput rather than selected from a model list. Auxiliary equipment is usually quoted alongside the main line rather than separately.

Does SUHUI supply a plastic dryer machine?

No. Hopper and desiccant dryers for hygroscopic resin are outside our range of plastic auxiliary equipment. The high speed mixer drives off surface moisture through friction heat and washing lines include a thermal drying stage, but neither is a substitute for a dedicated resin dryer where PET or PLA requires one before extrusion. We will say so rather than offer a mixer as a workaround.

Do I need a film squeezer if I already have a washing line?

Only if you pelletize afterwards. Washed film leaving a washing line is rarely dry enough or dense enough for an extruder to feed steadily, and the squeezer fixes both in one pass. If you sell washed flake rather than pellets, you do not need it. Size the squeezer from the pelletizer it has to feed, not from the washing line ahead of it.

Is a high speed mixer the same as a dryer?

No, and treating it as one is the most common mistake in this category. A high speed mixer generates friction heat that removes moisture sitting on the surface of the resin, which is enough for PVC compounding. It cannot remove moisture absorbed into the polymer itself, which is what hygroscopic materials such as PET and PLA carry and what a desiccant dryer exists to handle.

When is PET solid state polymerization worth the investment?

Only when a customer pays a premium for the higher grade. Solid state polymerization raises the intrinsic viscosity of recycled PET so it can go back into bottle or sheet rather than fibre and strapping. It is a significant capital item, so the decision is commercial rather than technical: confirm the offtake price for bottle-grade rPET before specifying the system.

Plastic Auxiliary Machine for Recycling Lines