ROHM AN D HA AS CHE M ICAL S L L C

MID W ES T TECHNICA L CENTER, 253 1 TECHNOLO GY D R

. S U IT E 301 ELGIN, IL 601 24 US A
TELEPHONE 847-64 9-3 800 FA X 847 -649- 376 0

The informa t ion pr esen ted here i n is based up on our o w n resear ch an d g eneral e x perien c e and is b e lieved to be accura te and re lia ble. Howe ver

, you should co ndu ct yo ur own te sts to evaluate the e ffe ctiveness o f the Roh m and Haa s p r od uct and our sug g e s tio n und er your o w n cond i t ion s prior to
commerci a l use

. As you can appre c ia te, si nce the conditions of hand ling, u s e and te st ing are beyond our control, we make no gu arantee of re sul t s an d
assume no liab ility for di rect or con s equential damage s incurr ed b y follow i ng the s e sugge sti ons. Nothi ng contained herein is t o be con s trued a s a recommenda tion fo r u s e in viola t ion of any pat e n ts or o f a pplicabl e law s o r re gulation s

.

Midwest Technical Center

Rohm and H aas Co. – 2531 Tech nolog y D r ive Suite 301 Elgin, IL 6 0124 Phone: 8 4 7 -649- 3800 Fax: 847-649 -3760 December 16, 200 8

Tom Ringelst e tter Corporate HSE Manager

A m eri can Pa ckaging
777 Drivi ng Park Avenue Rochester, NY 1461 3

Dear Mr. Rin g elstetter,

Rohm and Ha as, as y ou are aware, supplies a wide ran g e of adhesives to the packaging industry. American Packaging requested that we share our isocy a nate e xposure data as discussed in our telecom of 10 December.

We use OSHA Method 47 to assess exposure of affe cted workers to MDI (methy lene dipheny lene diisocy a nate). Method 47 may be reviewed at http://www.osha.gov/dts/sl tc/ m et hods/organic/org047/ org047.htm l . In 2004, we assessed the exposure of our personnel to MDI. We chose Mor-F reeTM 403A as the test adhesive. This adhesive has a high level of

MDI m onomer (18.6% based on our dat a contained in our Certified Product Data Sheet). Three staff e rs were tested f o r potential e xposure to MDI with the solventless laminator runni ng, enclosure door open, and personnel in f r ont of t h e machine. The three levels found were:

0.00 055 ppm
0.00 041 ppm
0.00 067 ppm

In January of 2006 , our ind u strial h y gien ist m onitored personnel in t h e use of Mor

- Free 403A and

Coreactant C- 411, t h is tim e at a custo m er ’ s site. Since this was a m o re for m al investigation, an external analy tical laboratory was e m ploy ed to perfor m the analy s is of samples in accordance with OS HA 47.

Two sam p les were collected from a point inside the lami nator abov e the adhesive pool that is typical in a
solventless lamination machine. The sam pl es showed airborne concentrations of 0.0072 and 0.0086 ppm MDI. Nor m al operations of solventless lam i nators in clude an exhaust sy stem above the adhesive pool t o collect, filter, and exhaust adhesive m i st s – to m i ni m i ze MDI exposure. To test the effectiven ess of the enclosure, several area sam p les were collected outside the enclosure around t h e exterior of the lam i nator.
Sa m p les colle cted outside the enclosure y i elded results of <0.000 14 ppm (below level of detection) and

0.00 034 ppm . One of the o p erators was tested in dupli cate during n o rmal lam i nator operation a nd b o th results showed low exposu r e levels of <0.00 018 ppm (below level of detection) and 0.0 002 9 ppm . The
continuous na ture of the tasks associat ed with th e operation of a solventless la m i nator and the close

agree m ent of the consecutive mea s ure m ents of MDI concentration are rea s onable esti m ates of full-shift

exposure.The information presented herein is based upon our own research and general experience and is believed to be accurate and relia ble. However, you should conduct your own tests to evaluate the effectiveness of the Rohm and Haas product and our suggestion under your own cond itions prior to commercial use. As you can appreciate, si nce the conditions of handling, use and test ing are beyond our control, we make no gu arantee of results and assume no liability for direct or consequential damages incurred by following these suggestions. Nothing contained herein is t o be construed as a recommendation for use in violation of any pat ents or of applicable laws or regulations

.

Midwest Technical Center

Rohm and Haas Co. – 2531 Technology Drive Suite 301 Elgin, IL 60124 Phone: 847-649-3800 Fax: 847-649-3760 The key findings for the internal and external tests were (1) very low levels of airborne MDI were detected inside the enclosure above the adhesive pool, (2) very low levels of MDI were detected in various samples taken throughout the laminating process, and (3 ) personal exposures to MDI did not exceed OSHA Permissible Exposure Limit (PEL = 0.02 ppm Ceiling) nor the Rohm and Haas Workplace Exposure Limit (WEL 8-hour TWA = 0.005 ppm). In addition, note that the airborne concentrations inside the enclosure
above the adhesive reservoir were extr emely low (0.0072 and 0.0086 ppm MDI).

Please review the information in this document and le t us know if you have an y further questions or

comments.

Regards,

Louis Dolmon Technical Service Manager Packaging and Industrial Adhesives
Rohm and Haas