Robond PLA

- WB/CR WB

- PLA October 200 7 Page 1 of 5Robond PLA

- WB/CR WB

- PLA October 200 7 Page 2 of 5

Mixing

MIX WELL BEFORE USING.

Dilution to the proper application solids is r ecommended for Robond PLA

- WB/CR WB

- PLA. For solids
reduction, it is recommended to dilute the adhesive/coreactant mix with deionized water for a range of 40

- 45 % solids

. If fur ther solids reduction can be obtained below 40% with water but further d ilution below

35% solids will cause mechanical stability problems . Alcohol/water dilution is not typically used but can be used using a 75% water/25% alcohol premix. Isopropyl Alcohol can not be added directly to this

system since it will cause shocking of the polymer. IT is recommended that defoamer Foamaster  O (Cognis) may be used at levels of 0.05

- 0.10% on a wet/wet basis for foam control

.

It is necessary that the CR WB

- PLA ad ded to the Robond PLA

- WB adhesive with mechanical agitation. Prior to adding the CR WB

- PLA

, Robond PLA

- WB needs to be mixed us ing mechanical agitation with

sufficient speed to create a small vortex ; this assur es that the adhesive is drawn from the sides a nd bottom of the mixing vessel. Slowly charge the appropriate amount of CR WB

- PLA at the edge of the vortex and continue mixing for 15

- 30 minutes. Then add the appropriate amount of recommended defoamer followed by the amount of diluent to reduce the sol ids of the mix, mix for an additional 10

- 15

minutes.

A typical mix @ 40% solids: typical mix @42% solids typical mix @44% solids

Robond PLA

- WB/CR WB

- PLA Robond PLA

- WB/CR WB

- PLA Robond PLA

- WB/CR WB

- PLA

Robond PLA

- WB 100 lb Robond PLA

- WB 100 lb Robond PLA

- WB 100 lb

CR WB

- PLA 11.5 lb CR WB

- PLA 11.5 lb CR WB

- PLA 11.5 lb

Water 18.5 lb Water 12.3 lb Water 6.7 lb

Foamaster O 295 grams Foamaster O 282 grams Foama ster O 268 grams

Coating Conditions Recommended coating weight is 1.0

- 1.5 dry pounds/ream (3000 square feet) for typical snack food applications. Lower coat weights can be used, but the bond values will be reduced accordingly. Higher

coa t weights are required for more demanding end uses.

Apply the adhesive to the least porous or most stable substrate with standard gravure type cylinders.

It is recommended to Corona retreat, treated films in order to remove any extraneous materials that may have transferred to the surface that will be coated with the adhesive mix.

Optimum coating properties are achieved at 40 %

- 45% solids on pan applied coater stations diluted with water using a 180

- 200Q type gravure cylinder. Coarse 150

- 165Q type gravur e cylinders may be used as required to run lower solids down to 35%; however

, adhesive appearance properties may be of lesser quality. A smoothing bar is recommended to obtain the best appearance. For enclosed doctor blade applications, it is recommende d that a running solids range of 40

- 42% be utilized.

Corona treatment levels of 4 2 dynes or higher are necessary to achieve good wetting and bonding of both

t he primary and secondary webs . In

- line corona treatment will be necessary if treatment levels ar e
inconsistent or low. In

- line corona treatment is recommended for optimum wetting clarity and bond strength. Follow the substrate supplier’s recommendations for treatment.

Hollow core gravure rolls with cold water circulation, typically used to apply w ater based coatings, will aid in the reduction of plugged cells due to adhesive dry

- out.Robond PLA

- WB/CR WB

- PLA October 200 7 Page 3 of 5

Drying and Combining Temperatures Maintain temperatures and air velocities in the drying tunnel to completely remove the water. An exit web temperature of 150 °

- 1 80 ° F normally is sufficient.

Nipping conditions depend upon pressure, temperature, and dwell time. These are different for each laminating system. Optimum performance and adhesive appearance is realized with a glue line temperature of 140 °

- 160 ° F or ab ove. Rewind chill roll temperatures are recommended at 110°F to insure sufficient roll temperature to maintain the desired cure response of the adhesive and coreactant.

Care must be taken to evaluate compatibility with inks, substrates

, and coatings used in conjunction with

Robond PLA

- WB due to the pH of the adhesive. The alkaline nature of the adhesive may potentially cause discoloration of inks and coatings.

Cleaning Drain the adhesive from the cylinder, pan and reservoir and dispose in accordance wit h State and local laws. Do not allow wet parts to dry out. Immediately rinse with tap water to remove the bulk of the adhesive residue. Follow by cleaning all wetted parts with ethyl acetate or other suitable solvent to remove any further residue. Dry all wetted parts.

Safety, Handling and Storage

 Store both Robond PLA

- WB and CR WB

- PLA between 50 °

- 100 ° F in a dry, well ventilated area.

 Follow good manufacturing and handling practices.

 Wash thoroughly after handling. Wash contaminated goggles, face sh ield, 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 Ma terial Safety Data Sheet for more information.



### ______________________________________________________________________ Robond is a r egistered 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 spec ific patents in this publication should not be understood as recommending the use of our products in violation of any patent or as permission or l icense to use any patents of the Rohm and Haas Company.

Visit us at 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

- 3760Robond PLA

- WB/CR WB

- PLA October 200 7 Page 4 of 5



# Rohm and Haas Food and Drug Opinion

Name: ROBOND (TM) PLA

- WB



### Regulation Complies 

### Opinion

Date Limitations

21CFR175.105 Y 10/10/2007

21CFR175.105 A 10/10/2007 ▪ It has been determined through migration studies that the combination of ROBOND (TM) PLA

- WB and CR

- WBPLA may be used as a laminating adhesive in polyolefin laminate structures for lidding sealed to microwaveable trays containing frozen food subjected to heating for 5

- 6 minutes to reach temperatures of approximately 100C.



### Legend:

L Yes, this product is cleared with limitations noted

N No, this product is not cleared

Y Yes, this product is cleared.

A Affirmed as compliant based on migration studies.



### Regulations:

21CFR175.105 Adhesives

21CFR175.105 Adhesives



### Disclaimer:
This information relates specifically to this product. We believe this information to be accurate and

reliable as of this date.

We recommend that our customers make t heir own determination on the suitability of this product for their particular application. We cannot guarantee that the indirect food additives/food

- contact status of this product will remain unchanged indefinitely; therefore we recommend that you pe riodically verify its status.Robond PLA

- WB/CR WB

- PLA October 200 7 Page 5 of 5



# Rohm and Haas Food and Drug Opinion

Name: CR

- WBPLA



### Regulation Complies 

### Opinion

Date Limitations

21CFR175.105 Y 10/10/2007

21CFR175.105 A 10/10/2007 ▪ It has been determined through migration studies that the

combination of Robond PLA

- WB and CR

- WBPLA may be used as a laminating adhesive in polyolefin laminate structures for lidding sealed to microwaveable trays containing frozen food subjected to

heati ng for 5

- 6 minutes to reach temperatures of approximately

100C.

21CFR175.300 Y 11/13/2006

21CFR176.170 L 11/13/2006 ▪ PROVIDED THAT THE FOOD CONTACT SURFACE OF THE

PAPER AND PAPERBOARD COMPLIES WITH THE

EXTRACTIVES LIMITATIONS IN 21CFR176.170 PARAGRAPH (C).

21CFR176.180 Y 11/13/2006



### Legend:

L Yes, this product is cleared with limitations noted

N No, this product is not cleared

Y Yes, this product is cleared.

A Affirmed as compliant based on migration studies.



### Regulations:

21CFR175.105 Adhesiv es 21CFR175.105 Adhesives

21CFR175.300 Resinous and polymeric coatings

21CFR176.170 Components of paper and paperboard in contact with aqueous and fatty foods

21CFR176.180 Components of paper and paperboard in contact with dry food



### Disclaimer:
This information relates specifically to this product. We believe this information to be accurate and

reliable as of this date. We recommend that our customers make their own determination on the suitability of this product for their particular application. We cannot guarantee that the indirect food additives/food

- contact status of this product will remain unchanged indefinitely; therefore we recommend that you periodically verify its status.