A kind of water-based inkjet, laser printing dual-purpose medical film and preparation method thereof

Abstract

The invention relates to the technical field of medical film, especially relates to a dual-purpose medical film for waterborne inkjet and laser printing and preparation method thereof. The dual-purpose medical film is prepared from a base material, the base material is PET sheet or PVC sheet, the thickness of the base material is 75 to 180 mu m, an upper surface of the front of the base material is provided with two layers of coating, i,e., a printing layer and an adhesion layer below the printing layer, the back of the base material is coated with a functional auxiliary coating, the dual-purpose medical film can print black or color images with high resolution, clear image and good color reducibility both on a laser printer and an inkjet printer.

Description

technical field [0001] The invention relates to the technical field of medical film, in particular to a water-based inkjet and laser printing dual-purpose medical film and a preparation method thereof. Background technique [0002] Medical film is a kind of film based on polyethylene terephthalate (PET) plastic sheet and coated with functional polymer coating, which is used for the output of images or graphics in the field of medical imaging. According to the different coating imaging conditions and methods on the substrate, the medical film on the market is mainly divided into four categories: photosensitive film coated with silver salt photosensitive material, thermal film, water-based inkjet printing film and color laser printing film , due to the problems of expensive production materials, insufficient environmental protection, and relatively harsh storage conditions for photosensitive films and thermal films, water-based inkjet printing films and color laser printing fi...

AI Technical Summary

Problems solved by technology

[0003] At present, water-based inkjet film can only be used for printing on inkjet printers, while laser printing film can only be printed on laser printers. When printing water-based inkjet film on a color laser printer, the image will be blurred, the resolution is low, and the black density is low. , The toner is not adhered firmly, the coating adheres to the fixing roller of the printer during printing, causing damage to the machine consumables, and the machine alarms after printing multiple sheets and needs to turn off the power, etc. One or more problems; laser printing film on the water-based inkjet printer Printing will cause the coating to absorb ink for a long time, the border of the printed image is blurred, the color reproduction is poor, the resolution is low, or the coating does not absorb ink, etc. Water-based inkjet film and laser printing film cannot be used together. We have to take time out of our busy schedules to understand the similarities and differences of products, and incidents of buying wrong film also happen from time to time, which brings a lot of inconvenience to users

[0004] The publication number is CN 205736492 U, which discloses a new type of water-based inkjet medical film, including a substrate, the substrate is a PET substrate, and the front and / or back of the substrate are coated with an inkjet printing coating. layer, the inkjet printing coating is a coating composed of water-based paint, the water-based paint is a water-based inkjet coating liquid, the inkjet printing coating is suitable for inkjet printing, the printing imaging speed is fast, and it is suitable for long-term Preserved, but this document cannot be applied to laser printing film, and printing on a color laser printer will cause blurred images, low resolution, low black density, and poor adhesion of toner.

[0005] The document with the publication number CN 105437813 A discloses a laser medical film and its preparation method. This PET medical film is prepared for laser printing requirements. The antistatic layer is coated on one side of the film base and is made of polystyrene sulfonate, and the laser ink-absorbing coating is coated on the other side of the film base, and the laser coating contains nano-scale alumina powder dispersion liquid , although the medical film has fast printing speed, good imaging effect, high temperature resistance, and good anti-static effect, the medical film cannot be applied to water-based inkjet printers. Poor reducibility, low resolution or coating does not absorb ink, etc.

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