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Cortec EcoShield® Barrier Coating for Paper

Cortec EcoShield® Barrier Coating for Paper

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Cortec EcoShield® is a recyclable barrier coating and completely reusable, eliminating the need for traditional wax and polyethylene papers.

In addition, you can apply the coating on recycled and kraft paper to protect the surface from corrosion caused by contaminants. EcoShield® Barrier covering is a packaging industry pioneer because it combines a contaminant sealant with a repulpable covering for kraft paper. This material can also be used to coat corrugated box liners, providing a moisture-resistant barrier. EcoShield® Barrier Coatings also provides exceptional grease and oil resistance.

In the past, wax and polyethylene coatings were used to cover corrugated, sheets and porous paper, waterproofing or vapor-proofing these materials. The resulting paper product is an environmental hazard that cannot be recycled by conventional means.

Packaging & Storage of Barrier Coating for Paper

Packaging options are available in plastic pails (5 gallons or 19 L), liquid totes, bulk and metal drums (55 gallons or 208 L). Before using, mix thoroughly.

To guarantee optimum product functionality, store it in its original container, out of direct exposure to sunlight. If stored indoors, make sure the temperature is at 40-100 °F (4-38 °C).

Shelf life: 1year

Features

  • Transmission Rate of water vapor (WVTR) is similar to poly-coated paper and far stronger than waxed paper in many ways.
  • ASTM F 1249 specifies barrier qualities at the end of the line.
  • Grease and oil resistance tested with the TAPPI T-559 KIT.
  • Tested for repulpability with TAPPI T 240 om-12 (See Table 1).
  • Developed in conformity with the FDA Code of Federal Regulations Title 21. • §176.170- Paper and paperboard in contact with watery and greasy meals.
  • §176.180: Paperboard and paper in contact with dry food.
  • UNI 11743:2019
  • Aticelca 501:2019 System of Evaluation certified the product as recyclable (See Table 2).

Note: Papers coated with the product have superior physical features such as tear, burst, elongation, tensile strength, coefficient of friction, folding durability, and smoothness.

Typical Applications

EcoShield® Barrier Coating can be applied using most standard paper roll coaters, such as flex, air-knife, gravure, and reverse-roll. The drying temperature ranges from 180 to 200 degrees Fahrenheit (82 to 93 degrees Celsius). The recommended masses (weight) are 8-11 pounds per ream (3000 square feet) (13-18 grams per square meter).

Water Vapour Barrier Properties (ASTM E 96)

 

EcoShield® Barrier Coating for Paper

Polycoated Paper

Waxed Paper

WVTR*

(g/hour•m2)

0.61-0.69

0.47-0.71

6.5-6.9

 

*Tested according to ASTM E-96, 73 °F (23 °C), 50% RH

Typical testing ranges: for EcoShield® Barrier Coated Paper (natural kraft paper #45 3msf, #10 coating), a similar polyethylene coated paper (40# 3msf material, 6# PE coating), and commercial waxed paper.

Table 1 - Repulpability Analysis 

Results*

Trial 1

Trial 2

% of Rejects

13.9

13.6

% Fiber Yield of Sample (85%)

86.1

86.4

Observe and note deposition on screens, movings parts, vessel walls, etc.

No

No

Deposition Observed? No If yes, detail below

N/A

N/A

SUMMARY

Operational Impact

Pass

Pass

Yield

Pass

Pass

*Methods and Notes:

Pulp Suspensions using TAPPI T 240 om-12 Consistency (concentration)

Dry/semi-dry sheet pulp samples are not filtered or diluted. Consistency is assessed by equilibrating the total sample (sliced into specimens) in a tight sealed plastic bag for at least one hour, then removing the two samples and drying them for at least four hours.

FBA Voluntary Standard for Recycling & Repulping

The Trial 2 (final pH) is below

Table 2 - Recyclability Assessment System Results*

Recyclability Assessment System Aticelca 501:2019
EcoShield® Barrier Paper Recyclable with Paper
Poly - ethylene Coated Paper
 
Level A+
Level A
Level B
Level C
Not Recyclable with Paper
Coarse Reject (%)
<1.5
1.5-10.0
10.1-20.0
20.1- 40.00
>40.0
Area Macrostickies ø<2000 µm. (mm2/kg)
<2.500
2.500-10.000
10.001-20.000
20.001-50.000
>50.000
Fibre Flakes (%)
<5.0
5.0-15.0
15.1-40.0
>40.0
 
Adhesiveness
Absent
Absent
Absent
Absent
Present
Optical Inhomogeneity
Level 1
Level 2
Level 3
Level 3
 

*Results obtained by applying a dry coat weight of 10 pounds per ream on 35 pounds per ream kraft paper.

 

Product Specifications (.PDF)

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