Shipping Sack Abbreviations
AF&PA: American Forest and Paper Association
AL: Aluminum
ANK: All Natural Kraft
AOP: All Over Perforations
AOPH: All Over Pinhole Perforations
ASCS: Agricultural Stabilization and Conservation Service
ASTM: American Society for Testing and Materials
BK: Bleached kraft
BL: Bleached white
BON: Biaxially Oriented Nylon
BOPP: Biaxially Oriented Polypropylene
BTB: Bottom Fold to Back
BTF: Bottom Fold to Face
BW: Basis Weight
C/L: Carload (rail)
cc: Cubic Centimeter
CD: Cross Machine Direction
Coex: Coextrusion
COF: Coefficient of Friction
C1S: Clay coated one side
C2S: Clay coated two sides
DOT: US Department of Transportation
DPI: Dots per inch
EVA: Ethylene Vinyl Acetate
EXT: Extensible
FBL: Finished Bag Length
FC: Flush Cut
FCS: Freight Classification Stamp
FDA: United States Food and Drug Administration
FFS: Form Fill and Seal
FIBC: Flexible Intermediate Bulk Containers
FST: Flat Sewn Tube (open mouth)
FSV: Flat Sewn Valve (flat tube)
FT: Flat Tube
FW: Face Width
GP: Greaseproof
GW: Gusset Width
HDPE: High Density Polyethylene
HFFS: Horizontal Form Fill and Seal
Hr: Hour
IMP: Impregnated
IRT: Insect Resistant Treatment
LCL: Less than Carload (rail)
LDPE: Low Density Polyethylene
LLDPE: Linear Low Density Polyethylene
LLH: Lower Left Hand, viewed with the printing right side up
LPI: Lines per inch
LRH: Lower Right Hand, viewed with the printing right side up
LS: Low Stretch
LTL: Less Than Truck Load
M/C: Machine Creped
MD: Machine Direction
MDPE: Medium Density Polyethylene
MET: Metallized
MF: Machine Finish
MG: Machine Glazed
Mil: 1/1000th of an inch
MVTR: Moisture Vapor Transmission Rate (same as WVTR)
MWK: Multiwall Kraft
N: Nylon
NK: Natural Kraft Paper
NMFC: National Motor Freight Classifications (truck)
OPP: Oriented Polypropylene
OTR: Oxygen Transmission Rate
P/S: Pinch Seal
PA: Polyamid (Nylon)
PB-FC: Pinch Bottom – Flush Cut
PBOM: Pinch Bottom Open Mouth Bag
PBV: Pinch Bottom Valve Bag
PE: Polyethylene
PET: Polyester
PHP: Pinhole Perforations
POM: Pasted Open Mouth – Satchel Bottom
PP: Polypropylene
PSOS: Pasted Open Mouth – SOS
PSSMA: Paper Shipping Sack Manufacturers Association
PVDC: Polyvinylidene Chloride
PVE: Pasted Valve Bag
PVE-TIS: Pasted Valve – Tuck In Sleeve
PVR: Pasted Valve Regular (flush cut tube)
PVSE: Pasted Valve Stepped End
RFO: Rough Finish Out
SB: Satchel Bottom
SBL: Semi-Bleached
SEPV: Stepped-End Pasted Valve
SG: Staggered Gussets
SOM: Sewn Open Mouth Bag
SOMF: Sewn Open Mouth Flat Tube
SOS: Automatic or Self Opening Sack or Self Opening Square
SPK: Super Performance Kraft or Flakt dried kraft
SPS: Sift Proof Square (another term for PBOM)
SPX: Extensible SPK from Tolko Manitoba, Inc.
Sq: In Square Inches
SV-TIS: Sewn Valve – Tuck In Sleeve
SV: Sewn Valve
TAPPI: Technical Association of the Pulp & Paper Industry
TEA: Tensile Energy Absorption
TIS: Tuck-in Sleeve
TL: Truck Load
TL: Tube Length
TOS: Tape Over Sewing
UFC: Uniform Freight Classification (rail)
ULH: Upper Left Hand, viewed with the printing right side up
URH: Upper Right Hand, viewed with the printing right side up
USDA: United States Department of Agriculture
UU-S-48: Federal Specification for Multiwall Bags
UVP: Under Valve Perforations
VFFS: Vertical Form Fill and Seal
VTB: Valve Folded to Back
VTF: Valve Folded to Face
VVH: Valve Vent Holes
WPP: Woven Polypropylene
WS: Wet Strength Paper
WVTR: Water Vapor Transmission Rate (same as MVTR)
XK: Extensible Kraft