PKSC 2020: Corrugated Manufacturing
1. Corrugated industry structure: integrated and independent structure
2. integrated industry structure: consumes at least 50% of materials from aflliated mill
3. independent industry structure: buys more than 50% of their materials from other mills
4. type of corrugated plants: sheet feeder, sheet plant, and corrugator box plant
5. sheet feeder: -manufactures board for converters in sheet forms
-aka corrugator plant
6. sheet plant: buys boards from sheet feeder and converts them into finished product
-aka box plant
7. corrugator box plant: manufactures board and converts into finished product
8. BMC: Box Manufacturer's Certificate: Located on a box, states that it meets standards
9. corrugated board components: linerboard, fluting medium, and adhesive
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, 10. linerboard: -typically krafted, unbleached paper made from softwood pulp with a fourdrinier machine
-basis weight: 29-90lbs/msf (lbs/1000ft^2)
-strong in the CD
-in the USA, uses southern pine or douglas fir fibers
-can be either virgin or test linerboard
11. fluting medium: -semi-chemical hardwood pulp with recycled content >30%
-typically 80-100% recycled
-almost always unbleached with some lignin left for rigidity
-basis weight: 26lbs/MSF (lbs/1000ft^2)
12. adhesive: starch based glue made of corn or wheat
13. virgin linerboard: contains 20% or less recycled contents
14. test linerboard: virgin layer on top of recycled layer, lower quality linerboard
15. duplex fourdrinier process: -used for linerboard manufacturing, series of headboxes and forming
wires where the plies are added still wet
16. gel point: temperature where raw starch absorbs water and forms a gel, critical for promoting good bond
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1. Corrugated industry structure: integrated and independent structure
2. integrated industry structure: consumes at least 50% of materials from aflliated mill
3. independent industry structure: buys more than 50% of their materials from other mills
4. type of corrugated plants: sheet feeder, sheet plant, and corrugator box plant
5. sheet feeder: -manufactures board for converters in sheet forms
-aka corrugator plant
6. sheet plant: buys boards from sheet feeder and converts them into finished product
-aka box plant
7. corrugator box plant: manufactures board and converts into finished product
8. BMC: Box Manufacturer's Certificate: Located on a box, states that it meets standards
9. corrugated board components: linerboard, fluting medium, and adhesive
1/3
, 10. linerboard: -typically krafted, unbleached paper made from softwood pulp with a fourdrinier machine
-basis weight: 29-90lbs/msf (lbs/1000ft^2)
-strong in the CD
-in the USA, uses southern pine or douglas fir fibers
-can be either virgin or test linerboard
11. fluting medium: -semi-chemical hardwood pulp with recycled content >30%
-typically 80-100% recycled
-almost always unbleached with some lignin left for rigidity
-basis weight: 26lbs/MSF (lbs/1000ft^2)
12. adhesive: starch based glue made of corn or wheat
13. virgin linerboard: contains 20% or less recycled contents
14. test linerboard: virgin layer on top of recycled layer, lower quality linerboard
15. duplex fourdrinier process: -used for linerboard manufacturing, series of headboxes and forming
wires where the plies are added still wet
16. gel point: temperature where raw starch absorbs water and forms a gel, critical for promoting good bond
2/3
