LightFastnessTestForInkPrintedMaterials测试指引

TITLE: Light Fastness Test For Ink Printed MaterialsReleased Date: Rev. No:Originating Department: Originating Author:1.PURPOSE AND SCOPE1.1Purpose: The method is to provide instructions to assess the light fastness of ink printedmaterials.1.2Scope: The method is applicable for all print substrates such as paper, board，plastic films , thinmetal plate ( i.e tins) and to all printing processes.2.EQUIPMENT AND MATERIALS USED IN TEST2.1A xenon arc lamp apparatus with either air cooled or water cooled device;2.2Blue wool references, in accordance with ISO 12040-1997;2.3A grey scale is used for the determination of colour change in accordance with ISO 105-A02;2.4Black-Panel-Thermometer, in accordance with ISO 12040-1997;2.5Light source, is a xenon arc lamp with a colour temperature of 5500 K to 6500 K;2.6The filter should completely absorb radiation at wavelengths below 310 nm. The transparency ofthe glass filters shall be at least 90 % in the range of wavelengths from 380 nm to 700 nm (simulating sunlight behind window glass).3.SAFETY AND HANDLING3.1Test personnel must have the basic knowledge and been trained on the materials and equipmentused in this test method.3.2Appropriate personal protective equipment (PPE) should be worn if necessary.4.SAMPLES TO BE TESTED4.1Test samples should be produced at least 24 hour prior to test.Preconditions test samples for at least 2 hours at room temperature prior to test.5.PROCEDURE5.1The test pieces and the blue wool references are mounted together as closely as possible in awell-ventilated test chamber;5.2Use an opaque board with the thickness of 0.5 mm at least to partly cover the test pieces and theblue wool references;5.3The temperature of the test pieces shall not exceed 45℃as measured by theBlack-Panel-Thermometer. Expose the samples to the light in a prescribed manner for a timeTITLE: Light Fastness Test For Ink Printed Materialssufficient to cause a distinct change, which is defined as equal to or less than grade 3 of the grey scale. Take out the test pieces and blue wool reference from the chamber.6.INTERPRETATION OF RESULTS6.1Compare the color change between the test pieces and blue wool reference, give the test piece alight-fastness rating that corresponds to the number of the blue wool reference that has the same level of color change.If the change of the test piece falls between the two successive numbers of blue wool references, the light fastness rate should be given the two corresponding numbers (e.g. 6-7). This rating method is not applicable to light fastness rating below 5. If the test piece’s color darkens, this test method is not applicable.6.2The light-fastness rating should be 6 or above.7.REFERNCES7.1ISO 12040-1997 Graphic technology - Prints and printing inks - Assessment of light fastnessusing filtered xenon arc light7.2GB/T 22771-2008 Graphic technology - Prints and printing inks - Assessment of light fastnessusing filtered xenon arc light7.3ISO 105-A102 Grey scale for assessing change in color8.ANNEXESN/ADOCUMENT HISTORICAL INFORMATIONREV DATEINITIATED CHANGEORDERREASONChooseCause orReviewDESCRIPTION标题: 印刷品耐晒测试方法发行日期：版本号：起草部门：起草人：1.0 目的和范围1.1 目的：本程序规定了测试印刷品耐光性的方法；1.2 本程序适用于纸、纸板、塑料薄膜、金属薄板印刷承印物，并适用于所有的印刷工艺。

2.0 实验所需仪器及材料2.1 附有空冷或水冷装置的氙弧灯设备；2.2 标准蓝色羊毛参考物，应符合ISO 12040-1997的规定；2.3 评定变色用灰色样卡，应符合ISO 105-A102的规定；2.4 黑板温度计，应符合ISO 12040-1997的规定；2.5 光源，色温为5500K-6500K的氙弧灯；2.6 滤光器，滤光器应能够吸收310nm以下的辐射，且在380nm-700nm波长范围内的透过率不低于90%（模拟透过玻璃窗户后的阳光）。

3.0 安全与操作3.1 测试人员必须具备本测试方法中所涉及到的材料及设备的基本知识，并已受过相应的培训。

3.2 如有必要需使用适当的防护设备4.0 测试样品准备4.1 取生产后24小时的待测包材，在室温下放置2小时以上，并在此温度下进行测试；5.0 测试步骤5.1 将测试样品和蓝羊毛标准样品尽可能接近地摆放在通风良好的测试箱中；5.2 用不透明板部分遮盖测试样品和蓝羊毛标准样品，不透明板的厚度至少应为0.5 mm；5.3 用黑板温度计测定测试样品，温度不能超过45℃,将测试样品和蓝羊毛标准样品放在氙弧灯光下曝晒，直至3级蓝羊毛标准发生明显变化,所谓的明显变化是指等于或小于评定变色灰色样卡3级。

取出测试样品和蓝羊毛标准样品；6.0 结果判定标题: 印刷品耐晒测试方法6.1 对比测试样品和蓝羊毛标准样品的颜色变化，确定和测试样品发生相同颜色变化程度的蓝羊毛标准样品的等级，该等级即为测试样品的耐光等级。

如果测试样品的变化落在两个连续等级之间，则应给出两个相应的等级（例如6-7），这种分级方法不适用于5级以下的等级。

如果测试样品颜色变深，则该方法不适用。

6.2 要求耐晒等级大于或等于6级7.0 参考文献7.1 ISO 12040-1997 Graphic technology - Prints and printing inks - Assessment of light fastnessusing filtered xenon arc light7.2 GB/T 22771-2008印刷技术印刷品与印刷油墨用滤光氙弧灯评定耐光性(Graphictechnology - Prints and printing inks - Assessment of light fastness using filtered xenon arc light)7.3 ISO 105-A102 Grey scale for assessing change in color8.0 附录N/A文档历史信息版本起草日期变更号变更理由描述。