2202 - IMAGE SYSTEMS FOR RETROFLECTIVE SHEETING 2200-3
2202.1 Description
This specification covers Process Inks, Electronic Cuttable Films, and Digital Print for use on retroreflective sheeting.
2202.2 Requirements
a. General. Provide transparent or opaque process inks with reducers and thinners as required for proper application. Provide durable, transp arent or opaque, colored electronic cuttable films with a pressure sensitive adhesive and a removable liner. Provide digital print on Ty pe XI retroreflective sheeting. Provide materials that are suitable for processing legends, borders, and background colo rs on retroreflective sheeting. Provide process inks or electronic cuttable films in 2 types as follows: Type I - For use with Type I retroreflective sheeting. Type High Intensity - For use with all type s of High Intensity retroreflective sheeting. b. Color. Provide transparent inks, films, and digital print that are yellow, red, orange, green, blue, or brown. Opaque ink, film, or digital print is black. Provide colors that comply with the chromaticity limits in ASTM D 4956. c. Performance. Provide process inks, electronic cuttable films, and digital print that, when applied according to the manufacturer’s recommendations, comply with the following:
1.They are compatible with the retroreflective sheeting.
2.They have good adhesion to the sheeting and do not cause blistering, puckering, shrinkage, expansion or other deterioration of the sheeting.
3.After artificial weathering, they have a "good" or better colorfastness, and show no evidence of cracking, edge lifting, curling or other surface deterioration.
4.Process inks dry hard within 16 hours.
2202.3 Test Methods
All tests will be conducted in accordance with ASTM D 4956 with the exception of artificial weathering. Artificial weathering will be conducted according to AS TM G 155, Cycle 1, with the following additions and exceptions: At the end of each 20-hour cycle, place the panels in a cold cabinet at approxi mately 0ºF for 1 hour. After removal from the cold cabinet, return the panels to the weatherometer to await the start of the next cycle.
2202.4 Prequalification
Manufacturers desiring to provide material under this specification are to submit prequalification samples of each type and color covered by this specification that they wish to prequalify. Each sample of process ink consists of 1 quart of transparent and opaque inks and any necessary reducer or thinner required for proper application. Each sample of electronic cuttable film and digital print consists of 2 pieces 24 inches square. Supply a sufficient quantity of the correct type of re troreflective sheeting for ink or film applications. Directions for proper application to retroreflective sheeting must accompany all samples of ink or film. Forward the prequalification samples to the Engineer of Tests. Samples will be tested for compliance with all requirements of this specification. Each manufacturer will be notified of the test results. If the prequalification samples of ink, film, or digital print comply with this specification, the product will be placed on a list of prequalified produc ts maintained by the Bur eau of Materials and Resear ch. No ink, film, or digital print will be used on KDOT projects unless it has been prequalified. Manufacturers will be required to requalify at intervals determined by the Engineer of Tests. 2202 - IMAGE SYSTEMS FOR RETROFLECTIVE SHEETING 2200-4 Testing and evaluation by KDOT may be waived if complete testing has been performed on the identical product by AASHTO National Transportation Product Evaluation Program (NTPEP) within the last five years. Forward an official copy of the test report along with evidence that the product referenced is identical to that submitted for prequalification, to the Engineer of Tests for evaluation.
2202.5 Basis of Acceptance
Prequalification as required by subsection 2202.3. Receipt and approval of a Type C certification as specified in DIVISION 2600. Visual observation of performance.
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Source: Standard Specifications for State Road and Bridge Construction, 2015 Edition. Pages 907–908 of 978. View official source ↗