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  1. What type of ink can be used on InteProŽ sheets?
  2. What type of adhesives can be used on InteProŽ sheets?
  3. How long will InteProŽ sheets last outdoors?
  4. Does InteProŽ sheet have out-gasing?
  5. Does InteProŽ comply with Restriction of Hazardous Substances in Electrical and Electronic Equipment (RoHS) directive?
  6. Does InteProŽ pass NCHRP 350 of Department of Transportation?  
  7. How long will the surface treatments (dyne level) of InteProŽ last?  
  8. Are InteProŽ sheets suitable for application at extreme low temperature?
  9. What kind of paints can be used on InteProŽ?
  10. How can InteProŽ sheets be cut?
  11. Can InteProŽ be ultrasonic-welded?
  12. Will the mildew grow on InteProŽ sheets?

 

1.    Q: What type of ink can beused on InteProŽ sheets?

A: Inks, such as solvent-based inks, water-basedinks, UV inks, lettering enamels, etc., can be used on InteProŽ.  Since the ink selection is related tothe printing process and application, consultation with ink suppliers is highlyrecommended.

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2.    Q: What type of adhesivescan be used on InteProŽ sheets?

A: InteProŽ can be joinedwith different substrates with hot melt glues, pressure sensitive tapes, waterand solvent-based adhesives. Adhesives, such as polyurethane (PU), epoxy, ethylene vinyl acetate(EVA), polyethylene (PE), etc., were used to join InteProŽ to differentsubstrates with good bonding.  Theselection of adhesive for InteProŽ is related to the other joining substrate,application, process etc., consultation with adhesive suppliers is stronglysuggested. 

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3.    Q: How long will InteProŽsheets last outdoors?

A: Plastic material degrades outdoors and becomesbrittle and cracks due to the UV rays in the sunlight.  The length of life is related to localweather and varies in different geographical locations.  Regular white PP InteProŽ sheet of 4 mmin thickness was tested according to SAE J1960 and did not become brittle after2,500 hours, which corresponded to one (1) year outdoor exposure in Miami, FL.

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4.    Q: Does InteProŽsheet have out-gasing?

A: InteProŽ is made of polypropylene (PP) orpolyethylene (PE) materials, which are very stable and inert.  We are not aware of any out-gasing problems of InteProŽ.  We have customers using InteProŽ for thephoto frame application in which out-gasing is acrucial concern.  To the best of ourknowledge, we have not heard any complaints due to out-gasing. 

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5.    Q: Does InteProŽ comply with Restriction of Hazardous Substances inElectrical and Electronic Equipment (RoHS) directive?

A: RoHSdirective has stated that electrical and electronic equipment must not containlead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBBs)or polybrominated diphenylethers (PBDEs).  In review of the components inthe production of InteProŽ, none of the above chemicals, which are specified inthe RoHS directive, is added in the production. 

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6.    Q: Does InteProŽpass NCHRP 350 of Department of Transportation?  

A:The test of NCHRP 350 is for an entire traffic device.  InteProŽ has been used as parts of thetraffic device, such as three-way barrier, and the device passes the NCHRP 350.

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7.    Q: How long will the surfacetreatments (dyne level) of InteProŽ last?  

A: It is true that the surface treatment of InteProŽ decays graduallybut the speed is slow.  The durationof surface treatment is also related to the storage of InteProŽ sheets.  Grease, water, dust, direct sunlight,etc. on the surface of InteProŽ may reduce and expedite the decay the treatmentlevel.  It has been observed thatwell-packed InteProŽ sheets, which have been stored in the warehouse withoutdirect sunlight for six (6) months, can be excellently printed or glued.

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8.    Q: Are InteProŽsheets suitable for application at extreme low temperature?

A: A good indicator for brittle temperature ofplastics is the glass transition temperature at which the plastic materialturns to glassy state.  The glasstransition temperatures of PP and PE are about –20oC (-4oF) and –80oC (-112oF),respectively.  Therefore, PE InteProŽmay be a better option for application, which needs rough handling, at extremelow temperature.

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9.    Q: What kind of paints canbe used on InteProŽ?

A: PP InteProŽ can bepainted with spray paints for plastics, which can be obtained in regularhardware stores.  For PE InteProŽ, itis suggested to roughen the surface and test the bonding of the paint beforeusage  

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10.Q: How can InteProŽ sheets be cut?

A: A utility knife can be easily used to cut InteProŽof thin gauge.  For InteProŽ of thickgauge, a power saw may be a better option. InteProŽ can be also cut with converting equipment, such as guillotine,die cutting machine, etc.  It issuggested that users make their own trials and evaluations to determine thebest equipment for their own purposes and applications.

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11. Q: Can InteProŽ be ultrasonic-welded?

A: InteProŽ sheets arethick and the air spaces in the flutes impede the heat transfer through thesheets for welding.  In ultrasonicwelding, the welding heat is produced by mechanically hammering or rubbing theplastic materials together at high frequency.   Therefore, ultrasonic welding avery efficient process to weld InteProŽ.      

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12. Q: Will the mildew grow on InteProŽ sheets?

A: Well packed InteProŽsheets stored in a regular environment generally do not grow mildew.

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