VpCI-144 Multimetal VCI Kraft Paper – 35# 48″ x 600′ (Cortec® VpCI®-144)

Description

VpCI®-144 is Cortec’s premium moisture-barrier VCI paper: a neutral natural kraft sheet coated on one side with a blend of water-based barrier coating and vapor-phase corrosion inhibitor, and with the barrier coating alone on the reverse. This listing is the 48″ × 600′ roll, the wide width for lining crates and pallets, interleaving plate and sheet, and wrapping large or oily parts in one sheet. It does three jobs in one wrap: blocks water vapor like a polyethylene-coated paper, resists oil and grease so a lightly oiled part does not soak through, and releases VpCI inside the package to lay a molecular protective layer on every metal surface. Because the barrier is water-based, the used paper still repulps and recycles.

VpCI-144 protects carbon steel, stainless steel, galvanized steel, cast iron, aluminum alloys, copper, brass (up to 30% zinc) and solder, so one paper covers mixed-metal assemblies. Wrapped and closed it covers shipping and warehouse storage; enclosed in an airtight outer package, up to ten years. In the Cortec Product Consultation Guide it is rated 2, inside storage, on all eight metals: enclosed packaging, uncovered indoor storage and shipment inside a crate or container; for outdoor lay-up, wrap the parts inside MilCorr shrink film. It replaces polyethylene-coated and waxed papers, which cannot be recycled, and the oil-dip-plus-wrap routine for parts that ship through wet climates: on Cortec’s ASTM E-96 test its water vapor transmission rate matches a polyethylene-coated paper and is roughly a tenth that of wax paper. Parts can be painted, welded and soldered without removing anything, and the film does not change the conductivity of electronic components. VpCI-144 is commercially equivalent to MIL-P-3420E, meets MIL-STD-3010C (modified) and conforms to NACE TM0208-2008 and RP0487-2000, is made without chlorine bleaching, contains no nitrites, phosphates, silicones, chromates or heavy metals, and its Nano-VpCI coating is patented (US 5,894,040).

Typical applications

• Oily or lightly greased machined parts that would soak through plain VCI paper
• Coils, wire reels, plate and bar from the mill
• Raw and machined forgings and castings
• Stampings, sheet metal work, springs, bearings, fasteners, tube and pipe
• Finished goods: engines, machinery, tools, hardware, appliances, instruments and motors
• Electrical and electronic components, controls and printed circuit boards
• Crate liners, shipping-tube end closures and separator sheets
• Export shipments through humid or marine climates in place of wax or poly-coated paper

How to use VpCI-144

1. Prepare the parts. Package as soon after cleaning as possible: clean, dry, at room temperature, no standing water. A light film of rust-preventive oil is acceptable, which is the point of this grade; pooled coolant is not.
2. Size the paper. Pull and cut to length from a roll dispenser; a 48″ width covers a standard pallet in one sheet and interleaves wide plate and sheet without piecing. Cortec’s dosing rule: about 1 ft² (0.09 m²) of VpCI-144 per 3 ft² (0.28 m²) of metal surface, and 1 ft² per 0.5 ft³ of void inside the package.
3. Coated side to the metal. The VpCI-and-barrier side faces the part, the plain barrier side faces out; keep the paper as close to the surface as practical with no other barrier between.
4. Wrap, fold and tape. Fold the edges together and tape the folds. For crates, line the box coated side in and fold the paper over the top of the load before closing.
5. Enclose for long storage. Protection lasts while the wrap stays closed. For up to ten years, enclose the wrapped product in an airtight heat-sealed VpCI-126 bag or 126 gusseted liner.
6. Unpack and use. Nothing to remove; the surface is ready for finishing or coating. The paper is fully recyclable and repulpable (TAPPI Useful Method 253, modified).
7. Store the paper. Original wrapping, away from heat and moisture, rotated first-in, first-out.

Typical properties from the Cortec data sheet; Cortec publishes these as typical values intended as guides only, not as specifications.

Property (TAPPI method)	VpCI-144
Basis weight, lb/3000 ft² (g/m²) (T-410)	54.8 (89.2)
Caliper, mil (µm) (T-411)	5 (125)
Tear, MD / CD, g (T-414)	47.5 / 58.5
Dry tensile, MD / CD, lb/in (T-494)	47.14 / 17.68
Stretch, MD / CD, % (T-404)	1.47 / 4.26
Smoothness, Sheffield, plain side / VpCI side (T-538)	240 / 231
Abrasion, g loss per 100 rev, plain side / VpCI side (T-476)	0.007 / 0.002

Water vapor transmission rate, ASTM E-96 at 73 °F and 50% RH, example test ranges from the Cortec data sheet.

Paper	WVTR, g/(h·m²)
VpCI-144	0.61 – 0.69
Comparable polyethylene-coated paper	0.47 – 0.71
Commercial wax paper	6.5 – 6.9

Combining with other VpCI packaging

VpCI-144 is the paper for oily parts and wet routes. Line and interleave the crate with it and close the load in a VpCI-126 gusseted liner or heat-sealed 126 bag, the airtight package the ten-year claim depends on; add a VpCI-132 foam pad or BioPad for a large void, a Desicorr VpCI pouch where humidity is trapped, and MilCorr over the crate for outdoor storage. Parts should be clean and dry before wrapping; see Build-All and Magido aqueous parts washers, with a dip in VpCI-377 or BioCorr where parts wait between washing and packing.

Where it fits in the Cortec line

VpCI-146 is the general-purpose VCI kraft for dry parts and interleaving; VpCI-144 is the step up when a moisture and grease barrier is needed too. Cortec also makes VpCI-144 Super Barrier, a high-gloss grade with more water resistance on the barrier side, and EcoShield Super Barrier paper with the same coating and no inhibitor for oily-part wrapping and pallet liners; ask us for either. EcoSonic ESD paper covers static-sensitive electronics and VpCI-143 squares go inside small components. Both stock widths are listed here: 36″ × 600′ and 48″ × 600′. Browse the full Cortec VpCI line and the VpCI product selection guide.

Field notes

A Michigan brake-rotor maker replaced liquid rust preventive with VpCI-146 interleaving about 15 years ago. When it automated packing in 2020, the robot line cuts 48-inch by 10,000-foot rolls of VpCI-146, layers paper and rotors on plywood and auto-wraps the pallet in Cor-Pak VpCI stretch film, which replaced a competitor’s bags. Ten-plus years on paper, residue-free. (Cortec Case History #716)

An Illinois transmission plant rusted parts every Midwest summer despite a competitor’s VCI paper and film, and liquids were not allowed on the line. In a spring trial, parts interleaved with VpCI-146 paper and bagged in VpCI-126 sat in the shop 3 to 4 months without rusting; the plant switched by summer and reports no major corrosion issues in seven years. (Cortec Case History #777)

A Southeast Asian armed forces agency had 105 mm charge bags and cartridge cases corroding in two-year tropical depot storage. Wrapping them in VpCI-146 plus an absorbent layer eliminated the corrosion, with estimated savings of about 900,000 US dollars a year. (Cortec Case History #105)

Specifications

Protection	Up to ten years for long-term storage when the wrapped product is enclosed in an airtight package
Metals	Carbon steel, stainless steel, galvanized steel, cast iron, aluminum alloys, copper, brass (≤30% Zn), solder
Consultation guide rating	2 – inside storage, all eight metals
Specification	Commercially equivalent to MIL-P-3420E; meets MIL-STD-3010C (modified)
Standards	NACE TM0208-2008 and NACE RP0487-2000; patented Nano-VpCI coating (US 5,894,040)
Basis weight (Cortec data sheet)	48 lb/3000 ft² (78 g/m²); caliper 4.6 mil (115 µm)
Biobased content	69% USDA certified; fully repulpable per Fibre Box Association standard and TAPPI T 240
Barrier	Water-based coating rather than polyethylene or wax
Moisture barrier	WVTR 0.61–0.69 g/(h·m²) (ASTM F1249, 73 °F, 50% RH), comparable to polyethylene-coated paper (0.47–0.71)
Oil and grease	Resistant; suitable for wrapping lightly oiled parts
Construction	Neutral natural kraft, VpCI and barrier blend on one side, barrier coating on the reverse; VpCI side goes toward the metal
Dosage	About 1 ft² of paper per 3 ft² of metal surface, or per 0.5 ft³ of void space
After unwrapping	No removal required; parts can be painted, welded and soldered; does not affect conductivity or resistivity of electronic components
Disposal	Non-toxic, biodegradable, fully recyclable and repulpable
Important	Keep the VpCI paper as close to the metal surface as practical, leaving no barrier between the paper and the metal
Shelf life	2 years
Storage	Original packaging, indoors, out of direct sunlight, 40–100 °F (4–38 °C)
Format	Roll stock, 48″ (122 cm) wide × 600′ (183 m); custom widths available from Cortec up to 100″ (2.5 m)
Size	35# 48″ x 600′
Shipping weight	46 lb (20.9 kg)
Availability	In stock
Cortec product number	40600576

Solvent Recycling Systems is an authorized Cortec® distributor. See the full Cortec VpCI line, browse the VpCI product selection guide, or contact us for volume pricing and lead times.