Medical dry-type laser film

Abstract

The utility model discloses a medical dry-type laser film which comprises an antistatic layer, a heat insulation layer, a film base material layer, a fixed protection layer, a thermal induction imaging layer, a silver salt emulsion layer and an outer protection layer, the film base material layer is made of a high-molecular high-temperature-resistant material, one side surface of the film base material layer is coated with the antistatic layer and the heat insulation layer, the other side of the film base material layer is coated with the fixed protection layer, the other side of the fixed protection layer is coated with the thermal induction imaging layer, the other side of the thermal induction imaging layer is coated with the silver salt emulsion layer, and the other side of the silver salt emulsion layer is coated with the outer protection layer. The anti-static layer can prevent the overlapped films from being adhered, and the outer protective layer plays a role in protecting the film coating. Silver salt in the silver salt emulsion layer is smeared and added into the thermal induction imaging layer, so that an image is distinct in gradation and higher in precision, imaging can be achieved by adopting the thermal imaging principle without darkroom technology processing, the anti-static and heat insulation effects are good, the printing precision cannot be affected by heat generated in the printing process, and the information recording image quality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical films, in particular to a medical dry laser film. Background Art

[0002] Medical film refers to a medium for recording medical images and graphic information. The graphic images recorded by doctors on film are used for medical diagnosis. Dry film is the name relative to "wet film" and refers to digital imaging film that does not require traditional developer and fixer. According to the description in the "Equipment Encyclopedia": During the imaging process of dry laser film, the film is heated by a thermal printer, causing the dye layer on the film to undergo chemical changes, thereby forming an image. Existing dry film imaging requires darkroom technology processing, and its antistatic and heat insulation effects are not good. At the same time, the static electricity generated during the printing process will affect the printing coating, and the printing accuracy will also be affected by the heat generated during the printing process. Therefore, improvements are made to the defects of existing dry films. Summary of the invention

[0003] The purpose of the utility model is to solve the problems raised in the above background technology and provide a medical dry laser film.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a medical dry laser film, including an antistatic layer, a heat insulation layer, a film substrate layer, a fixed protective layer, a thermal sensing imaging layer, a silver salt emulsion layer, and an outer protective layer; the film substrate layer is composed of a polymer high temperature resistant material, one side of the film substrate layer is coated with an antistatic layer and a heat insulation layer, and the other side is coated with a fixed protective layer, the other side of the fixed protective layer is coated with a thermal sensing imaging layer, the other side of the thermal sensing imaging layer is coated with a silver salt emulsion layer, and the other side of the silver salt emulsion layer is coated with an outer protective layer, the antistatic layer can prevent the superimposed films from sticking together, and the outer protective layer protects the film coating.

[0005] In the above-mentioned medical dry laser film, the film substrate layer is a PET substrate layer, which is a polyethylene terephthalate and the most important type of thermoplastic polyester.

[0006] In the above-mentioned medical dry laser film, the silver salt emulsion layer includes a medium containing particles of silver halide or silver bromide, which are uniformly dispersed in one or more mixed glues such as gelatin, polyvinyl alcohol resin PVA, acrylic emulsion, polyurethane, styrene-butadiene latex, etc.

[0007] In the above-mentioned medical dry laser film, the antistatic layer is a mixture of one or more organic polymer liquid antistatic agents or inorganic antistatic agents, and the thermal insulation layer is a mixture of one or more light calcium carbonate, heavy calcium carbonate, silicon dioxide, aluminum oxide, kaolin, and mica powder.

[0008] In the above-mentioned medical dry laser film, one side of the film substrate layer is first coated with a heat-insulating layer and then coated with an antistatic layer, and the antistatic layer is formed by evenly coating an antistatic coating liquid on the heat-insulating layer.

[0009] In the above-mentioned medical dry laser film, the fixed protective layer is formed by uniformly coating a fixed coating liquid on one side of the film substrate layer.

[0010] In the above-mentioned medical dry laser film, the thermal imaging layer is formed by uniformly coating a thermal imaging coating liquid on one side of the fixed protective layer.

[0011] In the above-mentioned medical dry laser film, the silver salt emulsion layer is formed by uniformly coating an emulsion coating liquid on one side of the thermal sensing imaging layer.

[0012] In the above-mentioned medical dry laser film, the outer protective layer is formed by uniformly coating an outer protective coating liquid on one side of the silver salt emulsion layer.

[0013] The beneficial effects of the utility model are: antistatic layer, heat insulation layer, film substrate layer, fixed protective layer, thermal induction imaging layer, silver salt emulsion layer, outer protective layer,

[0014] The utility model is a new type of medical dry laser film in which the silver salt in the silver salt emulsion layer is applied and added to the thermal imaging layer. The film can be used to output images in thermal imaging printing equipment. The thermal imaging technology containing silver salt is adopted, and the image is output by a medical thermal imaging printer, so that the image has clear layers and higher precision. The image has the characteristics of high image clarity, high color density, bright color tone, fast printing speed, no fear of exposure, small gray fog, rich image layers, strong ability to record image information, good image quality, etc. It can be used for medical imaging diagnostic technologies such as CT, MRI, CR, DR, DV, DSA, etc.

[0015] This utility model patent adopts the principle of thermal imaging and can form images without darkroom technology processing. It has good antistatic and heat insulation effects. The static electricity generated during the printing process will not affect the printing coating, and the heat generated during the printing process will not affect the printing accuracy, so that the information recording image quality is high.

[0016] The film substrate layer in this practical type is PET substrate, which is a thermoplastic resin of polyethylene terephthalate. PET substrate is a thermoplastic environmentally friendly plastic product. It is odorless and tasteless after burning and does not produce toxic gas. It has high transparency, no water ripples on the surface, no crystal points, no direction and no fold white; strong resistance to oil and grease and chemicals; strong toughness and rigidity, and good impact resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described in conjunction with the accompanying drawings.

[0019] See also Figure 1 The utility model provides a medical dry laser film, characterized in that it includes an antistatic layer 1, a heat insulation layer 2, a film substrate layer 3, a fixed protective layer 4, a thermal sensing imaging layer 5, a silver salt emulsion layer 6, and an outer protective layer 7; the film substrate layer 3 is composed of a polymer high temperature resistant material, one side of the film substrate layer 3 is coated with an antistatic layer 1 and a heat insulation layer 2, and the other side is coated with a fixed protective layer 4, the other side of the fixed protective layer 4 is coated with a thermal sensing imaging layer 5, the other side of the thermal sensing imaging layer 5 is coated with a silver salt emulsion layer 6, and the other side of the silver salt emulsion layer 6 is coated with an outer protective layer 7, the antistatic layer 1 can prevent the superimposed films from sticking, and the outer protective layer 7 protects the film coating.

[0020] The film substrate layer 3 is a PET substrate layer. The PET substrate is corona treated and is a polyethylene terephthalate, which is the most important type of thermoplastic polyester.

[0021] The silver salt emulsion layer 6 includes a medium containing particles of silver halide or silver bromide, which are uniformly dispersed in one or more mixed glues such as gelatin, polyvinyl alcohol resin PVA, acrylic emulsion, polyurethane, styrene-butadiene latex, etc.

[0022] The antistatic layer 1 is a mixture of one or more organic polymer liquid antistatic agents or inorganic antistatic agents, and the heat insulating layer is a mixture of one or more light calcium carbonate, heavy calcium carbonate, silicon dioxide, aluminum oxide, kaolin, and mica powder.

[0023] One side of the film substrate layer 3 is first coated with a heat-insulating layer 2 and then coated with an antistatic layer 1. The antistatic layer 1 is formed by uniformly coating the heat-insulating layer 2 with an antistatic coating liquid. There are three methods for preparing the antistatic coating liquid: fully stir sodium polystyrene sulfonate at a ratio of 1:5 with alcohol water in a ratio of 1:10, add it to the dispersed heat-insulating dispersion, mix it at a stirring speed of 60r / min, and obtain a translucent antistatic coating liquid. Or fully stir octadecyl dimethyl hydroxyethyl quaternary ammonium nitrate at a ratio of 1:8 with alcohol water in a ratio of 1:8. Add it to the dispersed heat-insulating dispersion, mix it at a stirring speed of 60r / min, and obtain a transparent antistatic coating liquid. Or mix polythiophene and sodium polystyrene sulfonate at a ratio of 1:6 with alcohol water in a ratio of 1:1 and stir it evenly. Add it to the dispersed heat-insulating dispersion, mix it at a stirring speed of 45r / min, and obtain a transparent antistatic coating liquid. Select according to actual use needs.

[0024] The fixed protective layer 4 is formed by uniformly coating a fixed coating liquid on one side of the film substrate layer 3. There are three methods for preparing the fixed coating liquid: mixing and stirring the water-based polyurethane and the solvent (water) in a ratio of 1:9 to obtain a transparent fixed coating liquid. Alternatively, mixing and stirring the water-based acrylic emulsion and the solvent (water) in a ratio of 1:5 to obtain a milky white transparent fixed coating liquid. Alternatively, mixing and stirring the water-based acrylic emulsion: water-based polyurethane: solvent (water) in a ratio of 1:4:8 to obtain a milky white transparent fixed coating liquid.

[0025] The thermal imaging layer 5 is formed by uniformly coating a thermal imaging coating liquid on one side of the fixed protective layer 4. The preparation method of the thermal imaging coating liquid is as follows: Step 1: weigh 10g ODB-2, 4g α-methylnaphthalene, and 40g ETAC into the same beaker, and put it into a heated water bath, so that ODB-2 is dissolved in a mixed solvent of a high boiling point solvent α-methylnaphthalene and a low boiling point ethyl acetate solvent, take it out and cool it to room temperature, and ODB-2 cannot precipitate; take an appropriate amount of capsule wall material and put it in it, and the oil phase is ready; Step 2: Take 150ml of 3% PVA aqueous solution and put it into a shear tank, add 10ml of surfactant, and the water phase is ready; use a high-speed emulsifying shearing machine to adjust the shearing of the water phase, and the speed is 7000-9000rpm , then add the oil phase to the water phase, emulsify and disperse for 15 minutes to obtain an oil-in-water emulsion; Step 3: Add 15ml of 5% PVA aqueous solution, 100ml of deionized water, 10ml of surfactant, and an appropriate amount of tetraethylenepentamine to the emulsion; use a microcomputer to control the double-column emulsification equipment to stir at a constant temperature of 60oC, a speed of 600-700-800rpm, and mature for 4 hours to obtain a dye precursor microcapsule emulsion; Step 4: Take 35ml of 5% protective colloid PVA, 3ml of surfactant and 3.5g of D-8, mix them in a ball mill for 8-12 hours, and obtain about 38ml of developer dispersed emulsion. Step 5: Take the dispersed emulsion in step 4 and mix it with the thermal imaging microcapsule emulsion at a ratio of 3.5:1 to finally obtain a thermal imaging coating liquid.

[0026] The silver salt emulsion layer 6 is formed by uniformly coating an emulsion coating liquid on one side of the thermal imaging layer 5. The preparation method of the emulsion coating liquid is as follows: 3g of silver halide particles are uniformly dispersed in 100g of a homemade solvent at a stirring speed of 800r / min for 5-10 minutes; then the silver dispersion is added to the aqueous polyurethane dispersion at a rotation speed of 45-80r / min and stirred for 15 minutes to obtain an emulsion coating liquid.

[0027] The outer protective layer 7 is formed by uniformly coating the outer protective coating liquid on one side of the silver salt emulsion layer 6. The preparation method of the outer protective coating liquid is as follows: 10g PVA is added to 90g deionized water, and the temperature is raised to 94 degrees to slowly dissolve, and after the PVA is completely dissolved and transparent, the temperature is kept for 1 hour, and then the temperature is lowered to 25-40 degrees, and 40g water-soluble acrylic emulsion is added, and the speed is 60r / min and the stirring time is 20 minutes to obtain the outer protective coating liquid.

[0028] The above is a detailed introduction to a medical dry laser film provided by an embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the technical solution disclosed by the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the utility model.

Claims

1. A medical dry laser film, characterized in that: The invention comprises an antistatic layer (1), a heat insulating layer (2), a film substrate layer (3), a fixed protective layer (4), a thermal imaging layer (5), a silver salt emulsion layer (6), and an outer protective layer (7); the film substrate layer (3) is composed of a polymer high temperature resistant material; one side of the film substrate layer (3) is coated with an antistatic layer (1) and a heat insulating layer (2), and the other side is coated with a fixed protective layer (4); the other side of the fixed protective layer (4) is coated with a thermal imaging layer (5); the other side of the thermal imaging layer (5) is coated with a silver salt emulsion layer (6); the other side of the silver salt emulsion layer (6) is coated with an outer protective layer (7); the antistatic layer (1) can prevent the superimposed films from sticking together; and the outer protective layer (7) plays a protective role on the film coating.

2. A medical dry laser film according to claim 1, characterized in that: The film substrate layer (3) is a PET substrate layer, which is a polyethylene terephthalate and the most important type of thermoplastic polyester.

3. A medical dry laser film according to claim 1, characterized in that: The silver salt emulsion layer (6) comprises a medium containing particles of silver halide or silver bromide, which are uniformly dispersed in one or more mixed glues of gelatin, polyvinyl alcohol resin PVA, acrylic emulsion, polyurethane, styrene-butadiene latex.

4. The medical dry laser film according to claim 1, characterized in that: The antistatic layer (1) is a mixture of one or more organic polymer liquid antistatic agents or inorganic antistatic agents, and the heat insulating layer is a mixture of one or more light calcium carbonate, heavy calcium carbonate, silicon dioxide, aluminum oxide, kaolin, and mica powder.

5. The medical dry laser film according to claim 1, characterized in that: One side of the film substrate layer (3) is first coated with a heat insulating layer (2) and then coated with an antistatic layer (1); the antistatic layer (1) is formed by evenly coating an antistatic coating liquid on the heat insulating layer (2).

6. The medical dry laser film according to claim 1, characterized in that: The fixed protective layer (4) is formed by uniformly coating a fixed coating liquid on one side of the film substrate layer (3).

7. The medical dry laser film according to claim 1, characterized in that: The thermal imaging layer (5) is formed by uniformly coating a thermal imaging coating liquid on one side of the fixed protective layer (4).

8. The medical dry laser film according to claim 1, characterized in that: The silver salt emulsion layer (6) is formed by uniformly coating an emulsion coating liquid on one side of the thermal sensing imaging layer (5).

9. The medical dry laser film according to claim 1, characterized in that: The outer protective layer (7) is formed by uniformly coating an outer protective coating liquid on one side of the silver salt emulsion layer (6).

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