PERSONAL AND CONFIDENTIAL

Fatty Foods MOR-FREETM L 82-105/MOR-FREE C-33

Solventless Laminating Adhesive

Description 

Mor-Free L 82-105/Mor-Free C-33 is an aliphatic, solventless, two component, polyurethane adhesive 

system which is applied at low temperature. This adhesive system is used for film/film and film/foil retort 

applications. This adhesive has shown good adhesion to a wide variety of clear barrier films.

Mor-Free L 82-105/C-33 offers fast room temperature cure without need for hot room.

Typical Properties*

(Polyester) (Isocyanate)

Mor-Free L 82-105 Mor-Free C-33

Solids 100% 100%

Viscosity 77 F 11500 cps 1800 - 4000 cps

Weight/Gallon 10.14 lb 9.75 lb

Appearance Clear, Yellow Clear

Odor -------- Practically none-------

Mixing Ratio 100 pbw 60.0 pbw

100 pbv 60.0 pbv

Shelf Life 360 days 360 days

(unopened containers)

*These items are provided for general information only. They are approximate values and are not 

considered part of a product specification.

Mor-Free L 82-105/C-33 may react or interact with other components of laminations. Retained volatiles 

(solvents or water), slip additives, antiblock agents and inks are some of the components that may cause 

property changes of the laminated structure. If Mor-Free L 82-105/C-33 is used on high slip films 

(COF < 0.2) or with high slip LDPE/LDPE laminations, then the user must verify that potential film property 

changes due to the lamination process and materials are acceptable for the end use performance 

requirements.

Processing

Mor-Free L 82-105/C-33 must be used on machines which have been specially designed for solventless 

laminations. Such equipment allows the adhesive to be fed through a meter/mix/dispense device and 

provides web tension controls designed for adhesives with low initial tack.

Mor-Free L 82-105/C-33 cures sufficiently for further processing in 2-3 days @ 25oC. Avoid hot room cure 

for first 24 hours. Allow 6 days cure @ 25oC before retorting.

Preheating the adhesive and coreactant is not required under normal use to lower the viscosity. The 

application rolls should be heated to approximately 110 - 130°F or higher depending on line speed.

When processing Mor-Free L 82-105/C-33, the safety rules for working with isocyanates must be 

observed.

For short trial runs the adhesive can be batch mixed. We recommend preparation of no more adhesive 

than can be used within 5-10 minutes. However, the use of a meter/mix/dispense device which 

continuously mixes the adhesive at the chosen ratio, controls the feeding of the application unit, and stops 

production automatically in case of machine failures, is indispensable for extended trials and normal 

production.

Mor-Free L 82-105/C-33 April 2011 Page 1 of 5

PACKAGING AND

CONVERTING
Mor-Free L 82-105/C-33 April 2011 Page 2 of 4

Cleaning

Depending on the design of the meter/mix/dispense unit, it should be cleaned before the adhesive 

becomes insoluble by progressive curing, if the machine stops for more than 15 minutes. Methylene

chloride can be used to flush the mixing and metering units where a non-flammable solvent is required. 

Consult the Material Safety Data Sheet from the methylene chloride supplier for safe handling.

If the application unit and mixing device are combustion proof, they may be cleaned with esters or 

ketones such as ethyl acetate and MEK.

Several commercially available solvents are safe and effective for flushing and cleaning Mor-Free 

adhesive residues from solventless laminators and meter/mix/dispensing equipment that do not have 

combustion proof ratings. We recommend contacting either Dynaloy, Inc. (800-669-5709; 

www.dynaloy.com) or Danko Industries (630-761-3188) for cleaning solvent recommendations. Always 

consult the solvent supplier’s MSD for safety information before use.

Safety, Handling and Storage

 Mor-Free L 82-105 and its coreactant can be stored for 12 months in airtight, closed, original 

containers in dry rooms at temperatures of 70F±15F. Opened containers should be used as quickly 

as possible.

 Store in a well ventilated area away from heat and ignition sources. 

 Follow good manufacturing and handling practices.

 Wash thoroughly after handling. Wash contaminated goggles, face shield, and gloves. 

Professionally launder contaminated clothing before re-use.

 ATTENTION! Container can be hazardous when empty. Follow label warnings even after container 

is empty. Do not reuse empty container without professional cleaning.

 Refer to Material Safety Data Sheet for more information.

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

0:00 0:14 0:28 0:43 0:57 1:12 1:26 1:40 1:55

Brookfield Viscosity (#27/4), cp

Time, hours:minutes

Pot Life of Mor-Free L 82-105/C-33 (100/60) at 

50°C
Mor-Free L 82-105/C-33 April 2011 Page 3 of 4

0

500

1000

1500

2000

2500

3000

105 110 115 120 125 130 135

Brookfield Viscosity, cp (#27/20)

Temperature (°F)

Temperature vs. Viscosity for Mor-Free L 82-105/C-33 

(100:60)
Mor-Free L 82-105/C-33 April 2011 Page 4 of 4

Rohm and Haas Food and Drug Opinion

Specification:1034342

Name: MOR-FREE L 82-105/BASEBULK

Regulation Complies Opinion 

Date Limitations

21CFR175.105 Y 11/08/2010

21CFR177.1390 A 12/07/2010 ▪ Fatty Foods. 2 mil (50 micron) cast polypropylene film. Mor-Free L82-

105 and Mor-Free C- 33, used at a ratio of 100:60, at a maximum of 1.4 

lb/ream, cured for 7 days at room temperature, may be used as an adhesive 

layer in multilaminate food packaging materials with fatty foods provided 

that the adhesive layer is separated from food by a 2 mil (50 micron ) cast 

polypropylene film under all conditions of use in full compliance with the 

Federal Food, Drug and Cosmetic Act.

▪ Fatty Foods 1 mil (25 micron) cast polypropylene film. Mor-Free L82-

105 and Mor-Free C- 33, used at a ratio of 100:60, at a maximum of 1.4 

lb/ream, cured for 10 days at room temperature, may be used as an adhesive 

layer in multilaminate food packaging materials with fatty foods provided 

that the adhesive layer is separated from food by a 25 micron (1 mil) cast 

polypropylene film under all conditions of use in full compliance with the 

Federal Food, Drug and Cosmetic Act.

▪ Aqueous Foods. 1 mil (25 micron) cast polypropylene. Mor-Free L82-

105 and Mor-Free C- 33, used at a ratio of 100:60, at a maximum of 1.4 

lb/ream, cured for 6 days at room temperature, may be used as an adhesive 

layer in multilaminate food packaging materials with aqueous foods 

provided that the adhesive layer is separated from food by a 25 micron (1 

mil) cast polypropylene film under all conditions of use in full compliance 

with the Federal Food, Drug and Cosmetic Act.

21CFR177.1395 L 11/08/2010 ▪ In accordance with the limitations as described under 21CFR177.1390 

above.

Legend:

Regulations:

21CFR175.105 Adhesives

21CFR177.1390 Laminate structures for use at temperatures of 250F and above

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

Mor-Free is a registered trademark of Rohm and Haas Company.

These suggestions and data are based on information we believe to be reliable. They are offered in good faith, but without 

guarantee, as conditions and method of use of our products are beyond our control. We recommend that the prospective user 

determine the suitability of our materials and suggestions before adopting them on a commercial scale.

Suggestions for uses of our products or the inclusion of descriptive material from patents and the citation of specific patents in this 

publication should not be understood as recommending the use of our products in violation of any patent or as permission or license 

to use any patents of the Rohm and Haas Company.

Visit us at http://www.rohmhaas.com/AdhesivesSealants

Rohm and Haas Company, Midwest Technical Center, 2531 Technology Drive, Suite 301, Elgin, IL 60124

Phone: 847-649-3800 Fax: 847-649-3760