In recent years, with the advancement of plastic modification technologies and growing environmental concerns, new types of plastic film materials have emerged. Among these, polyethylene terephthalate glycol (PETG) film has gained popularity due to its excellent toughness, high impact resistance, good molding performance, and ability to be cold-bent without whitening or cracking. It is also easy to print on and modify, making it a widely used material for ID card production. Another promising material, polyhydroxyalkanoates (PHA), which has developed rapidly over the past two decades, is a biopolymer with excellent biocompatibility and biodegradability. This makes it an environmentally valuable option for card body manufacturing. UV offset printing inks are also gaining attention for their fast curing speed, stable composition, and eco-friendly properties, making them suitable for various substrates. Understanding the color characteristics of UV inks on new film materials is crucial for optimizing print quality and performance. In this study, an IGT printability tester was used to conduct on-site proofing under varying printing pressures and ink supply volumes. The measured parameters—such as ink layer thickness, solid density, printing pressure, and ink volume—were analyzed and compared to determine the optimal printing conditions. These results were then used to perform overprinting proofs, where color data was collected and processed to evaluate the color properties and differences between UV offset inks printed on PETG and PHA films. Experiment Main Raw Materials 2. Experimental Equipment 3. Experimental Methods 4. Testing and Characterization Poly L-lactide-co-glycolide PLGA Poly(lactic-co-glycolic acid) is a copolymer which is used in a host of Food and Drug Administration approved therapeutic devices, owing to its biodegradability and biocompatibility. PLGA are currently widely used in many fields, such as bone nail; coatings; lifting thread; absorbable suture; microspheres, gel for drug delivery etc. The CAS Registry number of Poly(L-lactic acid) PLLA is 30846-39-0. It is white powder or floccule. What we can do are PLGA5050,PLGA7525,PLGA8515,PLGA9010,etc. We can provide Intrinsic viscosity from 0.30-2.25 dl/g, Mw from 6000-30000. For each batch a certificate of analysis is provided, showing the analytical data determined in our quality control laboratory. Additional analytical data can be made upon request. When stored in the original packaging at low temperatures (2-8°C), PLGA keeps its initial properties for at least two years. As a leading biodegradable biomaterial, PLGA is shaping the future of aesthetic treatments, regenerative medicine, and drug delivery systems. Its ability to enhance collagen production, support tissue growth, and provide controlled bioabsorption makes it a preferred choice among medical professionals worldwide. Want to explore PLGA-based products for your clinic or research? Contact us today for professional supply and collaboration opportunities! Medical Grade Copolymer PLGA,Biomedical Poly L-lactide-co-glycolide,Poly L-lactide-co-glycolide Polimer,Poly L-lactide-co-glycolide Rimless Industry Co.,Ltd. , https://www.rebornplla.com
The ink used was a UV offset printing ink. The substrates were PETG and PHA films (manufactured by Jiangsu Huaxin New Material Co., Ltd.), each with a thickness of 0.33 mm. Additional materials included ethanol (from Beijing Chemical Reagent Co., Ltd.) and cotton swabs.
The equipment used included the C1-5 Printability Tester (IGT, Netherlands), FusionLight Hammer 6 UV Curing Instrument (Deep UV System, USA), TaylorHobson Talysurf Surface Roughness Tester (TaylorHobson, UK), 610 Tape (3M, USA), X-Rite Swatchbook spectrophotometer, X-Rite Monitor Optimizer colorimeter (X-Rite, USA), and Colorshop software.
(1) Sample preparation: The film surface was cleaned with alcohol-soaked cotton swabs to remove any protective agents before proofing.
(2) Curing time determination: The UV curing instrument was used to cure the ink samples, and the curing process was checked by the fingertip touch method to ensure complete curing without smudging.
(3) Printing condition testing: Monochrome proofing (magenta, cyan, yellow) was conducted under different ink supply and printing pressure settings. Ink layer thickness and density were measured, and the optimal printing conditions were selected based on the ideal ink layer thickness range of 0.8–1.2 μm.
(4) Overprint proofing: Using the optimal settings from monochrome proofing, two-color (red-green, blue) and three-color (cyan-magenta-yellow) overprints were performed using dry overprinting techniques.
(1) Surface roughness was measured using the TaylorHobson surface roughness tester.
(2) Ink layer thickness was determined by the weighing method.
(3) Solid density was measured using the X-Rite Swatchbook spectrophotometer.
(4) Gamut map data analysis was carried out using the X-Rite Monitor Optimizer colorimeter and Colorshop software.Key Features & Benefits of PLGA:
Applications of PLGA in Aesthetic & Medical Fields:
Why Choose PLGA for Aesthetic & Medical Innovations?
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