Whiteness measuring instrument features and working principle
HIPS FILM, Rigid PS Film for Thermoforming
HIPS sheet material include:HIPS blister packaging, HIPS printing film,auti-electronic HIPS sheet,sand polishing sheet material.
1. Thickness: 0.18mm-1.50mm; Width: 75mm-800mm
2. Color: Natural color,White color,Milky white color,Brown color,Black color,Red Color,Blue Color ,Yellow Color,Coffee Color
3. Certificates: In accordance with the European RoHS Directive 2002/95/EC and its amendment directives.
4. Features: Highly smooth surface, uniform thickness & color, good luster, no oil stain, no perforation & breakage, no smell & toxicity. Can be easily thermoformed, glued, printed and folded.
5. Application: Being fit for thermoforming, vacuum form, blister package, folding box, printing, gluing in pharmaceutical, food and industry field, such as food tray, fruit tray, biscuit& chocolate insert pack, blister package for capsule, tablets, lozenge, toys, hardware, electronic products, stationery, cosmetic etc; Seed tray, advertisement board, clothes outer packing box, shirt color support, bidding documents cover, bank cards, shoe model, calendar, colorful plastic pictures, water spraying sheet etc.
6. Others: Special certificates can be applied for you according to your requirements.
Hips Film,White Hips Film,Hips Plastic Film,Black Hips Rigid Film Shandong Top Leader Plastic Packing CO., LTD , https://www.sdzlplastic.com
The design principle of the whiteness meter is complicated, and it is difficult for laymen to understand. The whiteness measuring instrument uses an integrating sphere to measure the absolute spectral diffuse reflectance. The light emitted by the tungsten halogen lamp is converted into a blue-violet light by the condenser and the filter, and enters the integrating sphere. After the light is diffusely reflected on the inner wall of the integrating sphere, the light is irradiated. The test mouth of the sample, the light reflected by the sample by the condenser, light bar filter group after the silicon photocell received, converted into electrical signals. Another silicon photocell receives the base signal inside the sphere. The two electrical signals are respectively amplified, mixed, and the result of the measurement is digitally displayed.
The whiteness measuring instrument adopts d/o illumination observation geometry (ISO2469). The diameter of the diffuser ball is φ150mm, and a light absorber is provided to eliminate the influence of the specular reflection light of the sample. The spectral power distribution of the R457 brightness optical system has a peak wavelength of 457 nm and a full width at half maximum of 44 nm. The RY optical system conforms to GB3979-83: Object Color Measurement Method. . The arithmetic mean of a series of measurements can be determined multiple times and given. With power-off protection, zero adjustment, alignment, and standard volume data, even if power is lost for a long period of time, it protects data from loss.