{"id":579,"date":"2026-05-25T07:50:07","date_gmt":"2026-05-25T07:50:07","guid":{"rendered":"https:\/\/rock-crusher-tractor.com\/?p=579"},"modified":"2026-05-25T07:50:07","modified_gmt":"2026-05-25T07:50:07","slug":"ep-cwb-2l-big-bag-potato-harvester-korea-guide","status":"publish","type":"post","link":"https:\/\/rock-crusher-tractor.com\/de\/ep-cwb-2l-big-bag-potato-harvester-korea-guide\/","title":{"rendered":"EP-CWB-2L Big Bag Potato Harvester \u2014 Complete Guide for Korea"},"content":{"rendered":"
\n

<\/p>\n

\n
<\/div>\n
\n

EP-CWB-2L Big Bag Potato Harvester \u2014 Complete Guide for Korean Processing Supply Chains<\/h1>\n

In-field FIBC packaging from harvest to truck in one pass \u2014 who this machine is actually for, the supply chain it enables, and the honest comparison with the EP-AWB-1600 for farms that don’t need the big bag configuration.<\/p>\n

Discuss Potato Harvest Equipment for Your Farm<\/a><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Korea’s potato processing industry \u2014 crisps (\uacfc\uc790), frozen products, starch, and food service potato supply \u2014 has grown steadily over the past decade as Korean consumers’ consumption of processed potato products has increased alongside the expansion of Korean convenience food, fast food, and industrial food manufacturing sectors. This processing industry growth has created a distinct supply chain segment separate from the fresh market: farms contracted directly to processing companies, delivering potato in large format packaging (FIBC big bags of 500 Kg) rather than in bulk bins, nets, or fresh-market retail packaging.<\/p>\n

The EP-CWB-2L big bag harvester is Watanabe’s solution for this specific supply chain configuration \u2014 a machine that harvests, grades, and packages potato directly into 500 Kg FIBC bags in-field, eliminating the packhouse handling step between field and processing plant. This guide explains what the machine does, exactly which Korean operations benefit from it, and \u2014 equally important \u2014 when the standard Kartoffelroder EP-AWB-1600<\/a> remains the better choice.<\/p>\n

<\/p>\n

What the EP-CWB-2L Does \u2014 Step by Step<\/h2>\n

\"EP-CWB-2L<\/p>\n

The EP-CWB-2L performs the complete harvest-through-packaging sequence in a single field pass. Understanding each stage of the sequence explains why it enables the direct processing supply chain:<\/p>\n

\n
\n
STUFE 1<\/div>\n
\n

Lifting and Soil Separation<\/p>\n

The lifting shares travel beneath the planted rows and bring the ridge \u2014 soil, tubers, and any remaining surface material \u2014 up onto the primary conveyor and vibrating web separator. Soil and fine particles fall through the web mesh back to the field; tubers ride the web forward. This stage is mechanically equivalent to the EP-AWB-1600 harvest operation.<\/p>\n<\/div>\n<\/div>\n

\n
STUFE 2<\/div>\n
\n

In-Field Grading<\/p>\n

After the web separator, the clean tubers pass through an in-field grading system that separates undersized and oversized tubers from the target grade range specified in the processing plant contract. Undersized tubers (below the minimum weight or diameter threshold) and oversized tubers (above the maximum for the specific processing line) are diverted to a separate stream. Only the on-grade product continues to the packaging stage.<\/p>\n<\/div>\n<\/div>\n

\n
STUFE 3<\/div>\n
\n

FIBC Big Bag Filling<\/p>\n

On-grade tubers are transferred into a 500 Kg FIBC (Flexible Intermediate Bulk Container \u2014 \ub300\ud615 \ud3ec\ub300) mounted on the machine’s bag frame. The FIBC is the same packaging unit that will be used for transport to the processing plant \u2014 no repackaging occurs between harvest and delivery. When a bag reaches its 500 Kg capacity, the operator pauses briefly to lower the filled bag from the bag frame, attach an empty FIBC, and continue harvesting. Total bag exchange time: approximately 2\u20133 minutes per bag.<\/p>\n<\/div>\n<\/div>\n

\n
RESULT<\/div>\n
\n

Filled Bags \u2014 Field to Truck Without Intermediate Handling<\/p>\n

The filled 500 Kg FIBC bags are positioned on the field headland (by the machine’s lowering mechanism, or by a forklift following the machine) and collected by the delivery truck at the end of the harvest session. The truck delivers directly to the processing plant’s receiving dock. There is no farm packhouse stop, no rebagging, no intermediate grading facility \u2014 the field-harvested grade goes directly into the processing intake stream.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

The Supply Chain the EP-CWB-2L Enables \u2014 and the Economics<\/h2>\n

\"EP-CWB-2L<\/p>\n

The EP-CWB-2L is designed for a specific supply chain model that differs structurally from the fresh market supply chain used by most Korean potato farmers:<\/p>\n

\n
\n

EP-CWB-2L Supply Chain<\/p>\n

\n
\u25b6<\/span> Field harvest + grading (in-machine)<\/div>\n
\u25b6<\/span> 500 Kg FIBC fill (in-field)<\/div>\n
\u25b6<\/span> Direct truck load at field headland<\/div>\n
\u2713<\/span> Processing plant intake<\/div>\n

Packhouse step eliminated. Farm receives processing grade premium price for direct delivery.<\/p>\n<\/div>\n<\/div>\n

\n

Standard Fresh Market Chain<\/p>\n

\n
\u25b6<\/span> Field harvest (EP-AWB-1600)<\/div>\n
\u25b6<\/span> Bulk bin to farm store \/ packhouse<\/div>\n
\u25b6<\/span> Grading + washing + packaging<\/div>\n
\u25b6<\/span> Retail market or cooperative delivery<\/div>\n
\u2713<\/span> Fresh market price premium<\/div>\n

Packhouse investment and operating cost required. Higher price per Kg but higher handling cost.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

The Economics of Packhouse Elimination<\/h3>\n

Korean farms selling processed potato to crisps manufacturers, starch processors, and frozen food companies via direct big-bag supply typically receive lower per-kg prices than farms selling premium fresh market potato. However, the elimination of packhouse handling costs can improve net farm margin even at lower gross prices. The cost items eliminated or reduced by switching from fresh market (packhouse) to direct processing supply (EP-CWB-2L) include:<\/p>\n