CN102198771B

CN102198771B - Medical single reflection film and preparation method thereof

Info

Publication number: CN102198771B
Application number: CN201010594381.2A
Authority: CN
Inventors: 陆扬
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-17
Filing date: 2010-12-17
Publication date: 2014-04-09
Anticipated expiration: 2030-12-17
Also published as: CN102198771A

Abstract

The invention discloses a medical single reflection film and preparation method thereof. The film contains a film base, the front of which is equipped with a blotting coating and the back of which is provided with a single reflection layer, on the external surface of which an antistatic coating is installed. The film of the invention has the advantages that: it can enhance the print sharpness and grey scale, with long storage time and convenient preservation; the single reflection layer installed in the film allows the film to be placed on a table or in the hands when it is seen from the front, and the light source is on the front of the film so that weak light from the back side of the film can be blocked by the single reflection layer, so the film looks like a paper. However, if the film is put on a film viewer which is higher than the film front in terms of brightness, light from the back can penetrate the single reflection layer, thus making the film present a transparent stereo effect that is almost the same as traditional films and convenient for doctors used to see transparent films. Therefore, the film of the invention has an enlarged range of application and is helpful for doctors to diagnose the conditions of patients more accurately.

Description

A kind of Medical single reflection film and preparation method thereof

Technical field

The present invention relates to a kind of medical film and preparation method thereof, is a kind of Medical single reflection film and preparation method thereof specifically.

Background technology

The use of medical film has had the history of more than 100 year, film is originally called salt elargol sheet, film is at that time by x-ray imaging, X ray is through then imaging on film of human body, and then by developing and then imaging of photographic fixing, price neither be very high, and the price of every film is 4.5 yuans of left and right, and domestic a lot of producers also produce.But due in the mid-90 in last century, external large producer has formulated digital medical image technology standard, it is the DICOM picture and text standard under PACS system, X ray through after human body no longer to film imaging, but by IP plate (CR), dull and stereotyped (the DR of data, DSA), collector (CT) is collected, then via computer, image is flowed to dry type camera, by dry type camera imaging, be about to need the view data input medical dry laser camera of imaging, then camera laser scanning film, imaging on film, form final products, film by this mode work is called as DVB film, this technology has been used more than ten years, this technology or sensitization technology in fact, or salt elargol sheet, but owing to there being the bottleneck of PACS system, the producer of our China is out one after another, the external Ji Jia great of new medical DVB film quilt factory has monopolized.They are respectively Kodak, Fuji, Konica.Also having Yi Ge producer is in addition exactly German Ai Kefa, the film of Ai Kefa is not the photographic film of salt silver, what they used is heat sublimation technology, because they have also grasped the standard of PACS system, so they have also become one of four large manufacturers of domestic monopolization film.Due to domestic producer as Lekai and so on all by shelves outside the competitive scope of digitlization DVB film, so it is very high that price is done by these famous brand producers, the price of every film has increased to 22 yuan of left and right by 4.5 yuan, China's annual 600000000 multiple films, wherein have 500,000,000 multiple by these external producers, carved up.This situation has continued more than ten years so far!

It is in fact domestic very early that just someone wants to break through this bottleneck, go to break the monopolization of external large factory to domestic film industry, but all unsuccessful, first be the transfer problem of software information, DICOM graphics standard under PACS be different from general computer system such as BMP, JPG, the universal standards such as PDF, domestic producer cannot convert these images at all, so at first, they just carry out cut-away view picture by the mode of screenshotss, be that they cannot obtain or say and cannot change out original distortionless image information, so they just intercept out with other software the image information showing on display, screenshotss getable image information be to have very large loss of data, definition declines to a great extent, cannot reach medical diagnosis standard at all, so product is at that time scarcely successful, just failed from image source.Next by about 2006, along with we a lot of returned student engineer's arrival, our domestic switching software also having had the DICOM image information stream under PACS, has just had the prerequisite that breaks through this blockade this time, and we have had figure source.But how that these images are intact, break-even printing, will also meet the necessary definition effect of medical diagnosis film and fast light heat-resisting moisture-proof and save-resistant performance simultaneously? what first expect is exactly laser printing technology, because laser printing technology is the printing technique of at present main flow, its speed is fast, and image definition is high, and the material of imaging is ink powder, the chemical stability of ink powder is very good, and the holding time is also very long.Data at that time are that the laser machine of main flow can print the image of 2400 * 2400DPI! the concrete meaning of this numerical value is, per square inch, on the area of 2.54 * 2.54 square centimeters, one has 2400 * 2400 some composition diagram pictures, this is a surprising numerical value, because mankind's eyes can only reach 300 * 300DPI left and right to the resolution capability of image definition, high again, the mankind's basic the resolution not out of eyes, but the bottleneck of laser machine having manifested out slowly: first, the fine definition of laser machine is based upon on colored basis, colored unit have 7 looks, so can mix out so abundant image information, and the image of our medical film is all black and white mostly, that is to say, the pictorial element of our medical film only has two, black and white, and paper itself is white, can go to regulate the ink powder of image to only have a kind of, that is exactly black powder, alone a kind of black powder cannot print high-quality black white image at all.The definition of black white image and the resolution standard of coloured image are different, what the resolution standard of coloured image was used is how many looks, generally 256 looks or 24 RGBs, and the standard of black white image is shade of gray, also be called shade of gray, so-called shade of gray is to print function be divided into how many steps from black to pure white image one, be exactly how many GTGs, GTG represents with several powers of 2, the shade of gray of printing black white image such as general printer is all 8 GTGs, and he can be printing off 256 different levels from black to game of shuttlecocks.And our human eye is very high for the resolution ratio of GTG, trained people's naked eyes approach 16 to the high energy of the resolution capability of GTG, and the general shade of gray using of medical film is all 12, that is to say, the standard of medical film is that handle is from black to being divided in vain 4096 levels.But saying the film printing, laser printer has the not in place of a lot of details performances, the main several situations that are embodied in below: first, the lung window picture of CT, lung's lung marking of the inside is comprised of the equally thin partially white microgroove of a lot of hairs, if the texture chap of lung, represent that there has been inflammation in lung, even and the film normal person's that our laser machine is printed lung marking seems all to feel somewhat thick; The rabat of the second, DR, reason is the same, is also to seem that lung marking is thicker; The 3rd, the malignant tumour probability that lung assembles is distinguished, the patient that lung assembles is a lot, but judge when this assembly is malignant tumour, be whether the periphery of observing this assembly has some thin as the radial blood vessel of hair, if had, these invasive blood vessels are indicating that this assembly is likely a malignant tumour so, but when using our laser technology printing film, these details are just difficult to find out; The 4th, bone trabecular pathology, bone trabecular pathology is also very trickle, some variations on weight and image texture can make doctor judge the approximate state of the state of an illness, but when passing through our laser machine printing, these details are not seen yet.Therefore also there is defect in laser printing technology on medical film is printed.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the object of the invention is for a kind of Medical single reflection film and preparation method thereof is provided, this film can be treated as transparent film or papery film is used, can make doctor more can go out conditions of patients by Accurate Diagnosis, can also improve and print definition and shade of gray, the holding time is long, preservation is convenient, with low cost.

Technical scheme: for realizing above-mentioned technical problem, the technical solution used in the present invention is: a kind of Medical single reflection film, comprise sheet base, on the front of sheet base, be provided with ink-absorbed coated layer, at reverse side, be provided with single reflecting horizon, in the outside of single reflecting horizon, be provided with anti-static coating.

Described single reflecting horizon is single pad pasting thoroughly.

The thickness of described base is 2-5 μ m.

The thickness of described anti-static coating is 1-2 μ m.

The thickness of described ink-absorbed coated layer is 1-2 μ m.

Described ink-absorbed coated layer is mainly made by the raw material of following parts by weight: nanometer gama-alumina hydrate 5-15 part, ethene-vinyl acetate copolymer emulsion 50-60 part, benzene emulsion 3-10 part.

A preparation method for Medical single reflection film, comprises the steps:

1) select PET or PVC material to make sheet base;

2) preparation ink-absorbed coated layer liquid: nanometer gama-alumina hydrate 5-15 part, ethene-vinyl acetate copolymer emulsion 50-60 part, benzene emulsion 3-10 part are mixed and obtains described ink-absorbed coated layer liquid;

3) described ink-absorbed coated layer liquid is sprayed in the one side of described base, the THICKNESS CONTROL of coating is at 1-2 μ m;

4) on the another side of described base, first stick single pad pasting thoroughly, then in the spraying of the outside of single pad pasting thoroughly, antistatic liquid forms anti-static coating, obtains described Medical single reflection film.

Beneficial effect: compared with prior art, advantage of the present invention is: can improve and print definition and shade of gray, the holding time is long, preservation is convenient, in film of the present invention, be provided with single reflecting horizon, it is placed on desk or takes when can make this film front see, light source is in the front of film, single reflecting horizon can block the low light level from the film back side, make film look like the effect of a piece of paper, if but film is inserted on viewbox, because the brightness of viewbox is higher than film front face brightness, single reflecting horizon can be come back side light penetration, make film seem to present transparent stereoeffect, about the same with conventional film, the doctor that can conveniently get used to like this transparent film uses, thereby expanded the scope of application, can also make doctor more can go out conditions of patients by Accurate Diagnosis.

Accompanying drawing explanation

Accompanying drawing is structural representation of the present invention.

The specific embodiment

Below in conjunction with drawings and Examples, the present invention is further described.

As shown in drawings, a kind of Medical single reflection film of the present invention, comprises sheet base 1, is provided with ink-absorbed coated layer 2, at reverse side, is provided with single reflecting horizon 3 on the front of sheet base 1, in the outside of single reflecting horizon 3, is provided with anti-static coating 4.Described single reflecting horizon 3 is single pad pasting thoroughly.The thickness of described base 1 is 2-5 μ m.The thickness of described anti-static coating 4 is 1-2 μ m.The thickness of described ink-absorbed coated layer 2 is 1-2 μ m.Wherein the concept of single reflecting horizon 3 is that the light of the one side that light is strong can pass medium, if and a little less than the light at the back side, part light penetration medium only, resulting effect is exactly, this film front is placed on desk or takes when seeing, light source is in the front of film, single reflecting horizon 3 can block the low light level from the film back side, make film look like the effect of a piece of paper, if but film is inserted on viewbox, because the brightness of viewbox is higher than film front face brightness, single reflecting horizon 3 can be come back side light penetration, make film seem to present transparent stereoeffect, about the same with conventional film.

Embodiment 1: a kind of preparation method of Medical single reflection film, comprises the steps:

1) select PET or PVC material to make sheet base 1;

2) preparation ink-absorbed coated layer liquid: nanometer gama-alumina hydrate 5 weight portions, ethene-vinyl acetate copolymer emulsion 50 weight portions, benzene emulsion 10 weight portions are mixed and obtain described ink-absorbed coated layer liquid;

3) described ink-absorbed coated layer liquid is sprayed in the one side (being the front of sheet base 1) of described base 1, the THICKNESS CONTROL of coating is at 1-2 μ m;

4) on the another side (being the back side of sheet base 1) of described base 1, first stick single pad pasting thoroughly, then in the spraying of the outside of single pad pasting thoroughly, antistatic liquid forms anti-static coating 4, obtains described Medical single reflection film.

Embodiment 2: substantially the same manner as Example 1, difference is the formula of ink-absorbed coated layer 2: nanometer gama-alumina hydrate 15 weight portions, ethene-vinyl acetate copolymer emulsion 55 weight portions, benzene emulsion 3 weight portions.

Embodiment 3: substantially the same manner as Example 1, difference is the formula of ink-absorbed coated layer 2: nanometer gama-alumina hydrate 10 weight portions, ethene-vinyl acetate copolymer emulsion 60 weight portions, benzene emulsion 6 weight portions.

Embodiment 4: substantially the same manner as Example 1, difference is the formula of ink-absorbed coated layer 2: nanometer gama-alumina hydrate 8 weight portions, ethene-vinyl acetate copolymer emulsion 58 weight portions, benzene emulsion 8 weight portions.

The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. a Medical single reflection film, is characterized in that: comprise sheet base (1), be provided with ink-absorbed coated layer (2) and be provided with overleaf single reflecting horizon (3) on the front of sheet base (1), in the outside of single reflecting horizon (3), be provided with anti-static coating (4); Described single reflecting horizon (3) is single pad pasting thoroughly; The thickness of described base (1) is 2-5 μ m; The thickness of described anti-static coating (4) is 1-2 μ m; The thickness of described ink-absorbed coated layer (2) is 1-2 μ m; Described ink-absorbed coated layer (2) is mainly made by the raw material of following parts by weight: nanometer gama-alumina hydrate 5-15 part, ethene-vinyl acetate copolymer emulsion 50-60 part and benzene emulsion 3-10 part.

2. the preparation method of a kind of Medical single reflection film according to claim 1, is characterized in that: comprise the steps:

1) select PET or PVC material to make sheet base (1);

2) preparation ink-absorbed coated layer liquid: nanometer gama-alumina hydrate 5-15 part, ethene-vinyl acetate copolymer emulsion 50-60 part and benzene emulsion 3-10 part are mixed and obtains described ink-absorbed coated layer liquid;

3) described ink-absorbed coated layer liquid is sprayed in the one side of described base (1) and forms ink-absorbed coated layer (2), the THICKNESS CONTROL of coating is at 1-2 μ m;

4) on the another side of described base (1), first stick single pad pasting thoroughly and form single reflecting horizon (3), then in the spraying of the outside of single pad pasting thoroughly, antistatic liquid forms anti-static coating (4), obtains described Medical single reflection film.