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Chaffless Center Cut® process

How Chaffless works

Our proprietary Center Cut process cracks roasted coffee and uses airflow to separate residual chaff and center-cut material before final grinding. The result is roasted coffee prepared with less of that papery material in the final grind.

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Crematics Center Cut Chaffless coffee processing machine
Center Cut equipmentRollers / airflow / collection

Start to finish

Four steps, in order

  1. 01

    Roast

    Specialty coffee, roasted to order in Atlanta.

  2. 02

    Crack

    Rollers crack the roasted beans open.

  3. 03

    Separate

    Moving air lifts the loosened chaff away.

  4. 04

    Finish

    Packed whole. Ground when you brew.

What is chaff?

The skin in the crease

Silverskin is the thin layer that hugs the coffee seed. Roasting detaches most of it, and what comes off is the light, papery material roasters call chaff.

A little stays down in the center cut, the natural crease running the length of the bean. That leftover material is what this process is built to reduce.

A roasted coffee bean with chaff visible in the center crease, and a loose flake of chaff beside it

Inside the machine

Rollers, airflow, and collection

Nothing is added and nothing is dissolved. The patent family describes a purely mechanical system: roller geometry, moving air, and a staged collection path.

Patent drawing: roasted coffee falls through cutting rollers while airflow carries loosened material into a collection tray
From KR 10-2555200. Coffee drops through the cutting rollers (120); air moves the loosened material left and down into collection (150).
01

Patterned rollers

Purpose-built roller surfaces crack the roasted coffee open without grinding it. This is a separation step, not the grind you brew with.

02

Airflow

Directed air lifts the lighter chaff and center-cut material off the heavier roasted coffee.

03

Collection

The separated material is carried into a collection path while the roasted coffee continues down the line.

Separated materialChaff / center cut

The result

What comes out

This is the material the airflow carries away: papery chaff and center-cut fragments, taken off the roasted coffee and collected at the end of the separation path.

In plain terms

What the process does

Center Cut reduces residual chaff and center-cut material after roasting and before the final grind. It is a physical separation process. It does not add ingredients or flavor, remove caffeine, or replace the grind you brew with.

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Source materialPatent record4 records

These documents describe the machinery and the method. They do not, on their own, prove a taste, health, caffeine, or percentage-removal claim.

Drawings on this page are reproduced from the linked patent records. The equipment photo was published by Crematics Lab and included in the supplied process evidence dossier.