Technology | SUHUI Machinery

What Regrind Plastic Is and How Much You Can Blend

Regrind plastic is the cheapest raw material in any moulding or extrusion shop, because you already paid for it once. It is also the material most likely to produce a batch nobody can explain. This guide stays on the material side of the question, separating regrind from repro and bought-in recyclate, setting out what actually degrades when plastic is reground and remelted, explaining why colour and contamination accumulate faster than strength is lost, naming the four constraints that cap a blend ratio, and showing how the crusher screen and blade condition that produce the regrind decide how well it behaves later.

20 Aug

Technology | SUHUI Machinery

Melt Flow Index and What It Tells You About Recycled Resin

SUHUI builds recycling and extrusion lines, not testing instruments, and this article is not about how to run the test. It is about what a line engineer does with the result when a lot of recycled resin arrives with a melt flow index on the docket. It covers why the number moves during recycling and which direction it moves in each polymer, how to read a series of readings as a degradation record, which processes a given value can still feed, how the reading drives screw type, degassing and pelletizing method, and the four things the measurement cannot see on recycled feed.

20 Aug

Technology | SUHUI Machinery

What Plastic Granules Are and How Buyers Judge Quality

Plastic granules are polymer supplied as small uniform pieces a few millimetres across, either virgin from a resin producer or recycled from a pelletizing line. This guide covers the seven properties a buyer actually checks before accepting a load — size spread, fines, black specks and metal, moisture, colour, odour and melt flow consistency — why moisture is three different numbers depending on the polymer, how to sample and test a delivery at goods-in, and what a producing line's configuration tells you about the granules it makes.

20 Aug

Technology | SUHUI Machinery

How Granulator Blades and Screen Size Decide Output

Granulator blades cut plastic by shearing it between rotating rotor knives and stationary bed knives, and the screen underneath decides how small a piece must be before it can leave the chamber. This guide covers the three rotor blade arrangements and what each does to the cutting load, why cutting clearance matters more than sharpness, how screen aperture moves particle size, throughput, heat and fines all at once, how to match blade grade to an abrasive or impact-prone feed, when to sharpen rather than replace, and how to read a handful of regrind to diagnose the chamber.

19 Aug

Technology | SUHUI Machinery

Underwater Pelletizing vs Strand Water Ring and Die Face

Underwater pelletizing cuts molten polymer at the die face inside a flooded chamber and produces the roundest and most uniform pellets of the four industrial methods, but it is not simply the premium option on a ladder. This guide compares underwater, strand, water ring and die face hot cutting on where the cut happens, what carries the heat away, what pellet shape results, which drying equipment each one drags in behind it, the signature defect each produces when it is put on the wrong material, and how much a changeover costs, using four published SUHUI line configurations as worked examples.

19 Aug

Technology | SUHUI Machinery

What Is a Pelletizer and the Four Ways It Cuts

A pelletizer is the cutting unit at the end of a plastic recycling line, not the whole machine and not the part that melts the material. This guide separates it from the crusher, the extruder and the line it sits in, walks the four elements every pelletizer contains, names the four ways it can cut, explains why granule shape follows the cut method, and shows which arrangement SUHUI puts on each of its four pelletizing lines.

19 Aug

Buyer's Guides | SUHUI Machinery

How to Evaluate Plastic Extruder Manufacturers

Two suppliers quote the same extruder and the prices differ by thirty percent, because the items that create the gap are missing from both documents. This guide covers the six hardware facts that make plastic extruder manufacturers comparable — screw and barrel surface treatment, L over D stated as a number, who machines the die head, control component brands, a trial run on your own resin with a recorded tolerance band, and who pays for die corrections during ramp-up.

Plastic Recycling Industry Blog

What Regrind Plastic Is and How Much You Can Blend

Melt Flow Index and What It Tells You About Recycled Resin

What Plastic Granules Are and How Buyers Judge Quality

How Granulator Blades and Screen Size Decide Output

Underwater Pelletizing vs Strand Water Ring and Die Face

What Is a Pelletizer and the Four Ways It Cuts

How to Evaluate Plastic Extruder Manufacturers

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