HIGHLY CONFIDENTIAL

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UV Handling SafetySeminar
HIGHLY CONFIDENTIAL
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Overview

• Safe Use and Handling of UV Curables in the Press
  Room.
• Switching Between Water-base and UV.
• Safe Use and Handling of Hot Melt Products in the
  Press Room.
• Press Set Up and Quality Control (QC) Procedures
  for UV Integrated Label System

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Safe Use and Handling in the Press Room
The processing of any chemistry, whether it be in
the printing industry or in other industrial
applications, requires that safety be given high
priority. It is important to understand the
products that are being processed and the
protective measures required.
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Safe Use and Handling of UV Curables in the
Press Room

• Ultraviolet (UV) curable inks, adhesives and
  coatings are used in many press rooms today. Like
  other chemistries, UV products require that
  specific precautions be taken for use and
  storage. The focus is on the liquid material as
  UV products pose no health consideration once
  they are cured.

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Safe Use and Handling of UV Curables in the
Press Room

• Prevention
• Wear gauntlet-style Nitrile rubber gloves when
  handling liquid UV curables. Gloves should be
  removed and discarded if exposed to liquid.
• Wear safety glasses with side shields or chemical
  splash goggles to prevent eye contact when
  handling liquid UV.
• Do not wear contact lenses when working with
  liquid UV.

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Safe Use and Handling of UV Curables in the
Press Room

• Corrective Action - Skin and Eyes
• If the skin is exposed to liquid UV, wash the
  affected area immediately. Use mild soap and,
  beginning with cool water, gradually increase the
  water temperature until the area is thoroughly
  cleansed.
• For minor skin irritation or burns, a 1
  hydrocortisone cream should be applied. The area
  should be kept clean and shielded from direct
  sunlight.
• For more severe irritations, consult a doctor.
  Provide the MSDS information to the doctor so he
  or she knows that the class of irritant involved
  is acrylate. Typically, physicians prescribe a
  topical steroid cream or an internal steroid
  pill.
• If liquid UV comes in contact with the eye, both
  eyes should be flushed for at least 15 minutes
  with eye flush solution. Consult a doctor to
  ensure that the eye has been completely cleaned.

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Safe Use and Handling of UV Curables in the
Press Room

• Corrective Action - Clothes and Shoes
• If liquid UV adhesive or coating is splashed or
  spilled on clothing, remove the article of
  clothing immediately. (Wash the affected skin as
  instructed.)
• Do not launder the affected article of clothing
  with other clothing. Before laundering, soak the
  affected area of the clothing with concentrated
  alkaline laundry soap. This will remove the
  liquid UV compound completely.
• Liquid UV will soak into leather or canvas shoes
  and cannot be removed. To prevent contact with
  the skin, remove shoes immediately if liquid UV
  is spilled on your shoes. Discard the shoes.

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Safe Use and Handling of UV Curables in the
Press Room

• Handling and Storage
• UV adhesive and coatings should be stored out of
  direct sunlight at temperatures below 100F.
  Containers of liquid UV that are not in use
  should be closed with the cover supplied and
  should have air space over the surface of the
  liquid.

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Safe Use and Handling of UV Curables in the
Press Room

• Do not expose the liquid UV to acids, bases,
  copper, brass, carbon steel or rusty iron. Such
  contamination can cause the liquid UV to begin to
  cure and gel.
• Allow head space in the container 1 Gallon
  can - 1 inch 5 Gallon pail - 3 inches 55
  Gallon drum - 5 inchesIf you pour the adhesive
  or coating from one container into another, make
  sure the second container has adequate head space
  (see above).
• Do not use high shear pumps and do not overfill
  pumping vessels in order to ensure adequate head
  space (see above).
• Keep the work area clean. If liquid UV is spilled
  or splashed on the press, remove it before it is
  spread by hand contact to other parts of the
  press such as switches or controls.
• Never add water to UV products.

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Safe Use and Handling of UV Curables in the
Press Room

• Spill Control
• Absorb the liquid UV with towels or spill
  granules. Place in sealed, marked container.
• If possible, incinerate the soaked towels or
  granules. Otherwise, dispose of these in
  accordance with local, state federal
  regulations.
• For assistance in disposing of liquid UV that is
  contaminated due to a major spill, contact the
  manufacturer as stated on the Material Safety
  Data Sheet (MSDS).
• After a spilled UV compound is picked up, wash
  the area with soap and water.

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Switching Between Water-base UV

• Switching from Water-base to UVWhenever
  switching from anything water-base to a UV
  curable material, a complete clean up is needed.
  Any pot or pan should be drained and cleaned with
  IPA or 50/50 IPA/Xylene. The pot or pan should
  also be completely dry before adding the UV
  curable material. Since UVs are not water-base,
  any water can inhibit curing.
• Switching from UV to Water-baseThe same clean up
  procedure should be followed as above.

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Safe Use and Handling of Hot Melts in the Press
Room

• HandlingWhen using hot melts, one should always
  be aware of the temperature at which hot melt is
  applied. Most hot melts are applied at
  temperatures greater than 300F. Therefore,
  extreme caution should be taken when handling and
  filling hot melt equipment.
• CleaningThere is no real clean up necessary
  after using hot melts besides turning off the
  equipment and allowing it to cool before handling
  the equipment.

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Press Set Up and Quality Control Procedures
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Press Set Up and QC Procedures for ILFS
Integrated Label System (with UV Silicone)

• For Flexo Applied Applications
• Utilize a photopolymeric plate
• Handling and Substrate Requirements
• L9091L UV free radical and PC-605 UV cationic
  silicone release coatings are both one-component
  systems that are thixotropic in rheology,
  offering excellent hold out characteristics on
  uncoated paper stock. Both products should be
  mixed for a few minutes prior to running. Also,
  it is best to keep constant agitation on the
  products while running.

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Press Set Up and QC Procedures for ILFS
Integrated Label System (with UV Silicone)

• Use Nitrile rubber gloves when handling UV during
  mixing process.
• Do not leave pails or drums of UV open when not
  in use due to the inherent UV light sensitivity
  of this type of product.
• Shelf life for these products is three to six
  months.
• UV Curing Requirements
• 200 fpm per 300 watts/inch lamp

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Press Set Up and QC Procedures for ILFS
Integrated Label System (with UV Silicone)

• On Line Quality Control Procedure (before
  adhesive is applied)
• Use a micrometer to ensure that the volume of UV
  silicone release coating remains at no less than
  0.15 mil.
• Check reverse side of web after UV application
  and make sure no UV silicone has penetrated. This
  should be done visually as well as with a
  permanent pressure sensitive label (shipping
  label) by sticking the label on the reverse side
  of the web and making sure fiber tear occurs.
• Using your fingernail, scratch the surface of the
  cured UV to make sure only an insignificant
  amount of UV silicone is coming off. This is a
  quick test to confirm that cross-linking has
  taken place.

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Press Set Up and QC Procedures for ILFS
Integrated Label System (with UV Silicone)

• Visually check the curing of the coating. If
  coating remains in liquid state after the UV
  lamps, take the following steps
• Make sure the lamps are operating properly.
• Make sure the paper has not been exposed to a
  high degree of relative humidity. If high
  humidity is an issue, increase the UV application
  until cross-linking is observed.
• Check the effectiveness of the release coating
  with a permanent pressure sensitive shipping
  label before hot melt coater is engaged. If
  clean release is observed, turn on the hot melt
  coater.

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Press Set Up and QC Procedures for ILFS
Integrated Label System (with UV Silicone)

• As Final Quality Control Check After Hot Melt
  Coater is Engaged
• Peel hot melt labels off integrated label piece
  and make sure no streaks are observed on the
  release coating surface.
• Directly off line, pinch long way on label
  label should almost fall off.
• Make sure dies are not set too deep so as to
  punch through back of piece. This will result
  in fiber tear of the label.