CN105216472A - A kind of dry type medical film polyester film base - Google Patents
A kind of dry type medical film polyester film base Download PDFInfo
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- CN105216472A CN105216472A CN201510728218.3A CN201510728218A CN105216472A CN 105216472 A CN105216472 A CN 105216472A CN 201510728218 A CN201510728218 A CN 201510728218A CN 105216472 A CN105216472 A CN 105216472A
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Abstract
The invention provides a kind of dry type medical film polyester film base, comprise backing layer, film support, bottom, wherein, bottom and backing layer are coated on the two sides of film support respectively by online coating, the bottom of polyester film base improves the adhesive force with thermographic layer, backing layer with time slice base has excellent smooth performance and electrostatic-proof function, keeps, in film printing process, electrostatic and adhesion phenomenon to occur, and has good machine excessively.Described polyester film base production technology is simple, cheap for manufacturing cost, excellent combination property.
Description
Technical field
The present invention relates to medical film technical field, particularly a kind of sheet base for dry type medical film.
Background technology
Along with the development of Medical Imaging Technology, from wet type medical film to dry type medical film and dry type medical digital film.At present, dry type medical film becomes main flow in medical image record.Traditional wet medical film mainly refers to light-sensitive silver halide medical film, and such film is subject to outside environmental elements impact, and preservation difficulty is large.The imaging process of film needs to be machined by developing fixing, and film produces waste liquid in developing fixing process, contaminated environment.Dry type medical film does not then need through development and fixing solution processing as wet type medical film, is a kind of medical film of the processing mode novel digital imaging by adding temperature-sensitive, laser or inkjet printing.Process environmental protection is convenient, imaging clearly.
Dry type medical film structure is generally made up of backing layer, bottom, film support, bottom, imaging layer and cuticular layer.Dry type medical film is classified according to the difference of imaging mode, can be divided into laser printing dry type film, inkjet printing dry type film, thermal printing dry type film.Laser printing dry type film is a kind of photosensitive material medical film grown up with laser printer, the advantage of this film is image stabilization, easy to process, but this film uses coating material cost slightly high, the scope of application is restricted, and there is storage stability difference; Inkjet printing dry type film is the medical imaging film of one for inkjet printing, during use smooth performance and anti-static effect poor; Thermal printing dry type film is a kind of medical film for thermal printing, general uses organic heat susceptible coating imaging, and part film exists the sheet base problem bad with thermographic layer adhesive force, while smooth performance and anti-static effect poor.
Above-mentioned medical film is normally support with polyester film, in order to improve the tack of imaging layer to film support, need to carry out bottom coating waste water to polyester film support in advance, the finished polyester film of this bottom is commonly referred to as polyester film base, there is the situation bad with part thermographic layer adhesive force in described polyester film base, film is caused to produce dry linting, collapse the phenomenons such as limit cutting in print procedure, have impact on quality and the printing effect of film, damage is caused to processing machine equipment simultaneously; The back side of polyester film base, smooth performance and electrostatic-proof function poor, cause producing adhesion phenomenon in print procedure, cross machine poor performance, therefore need the back side to carry out coating to improve smooth performance and electrostatic-proof function, cost is higher.In the production process of traditional laser printing dry type film, inkjet printing dry type film and thermal printing dry type film, before backing layer coating process, the coating of bottom is first carried out on the surface of polyester film, then carry out the coating of backing layer in bottom surface, step tediously long being unfavorable for enhances productivity.
In sum, laser printing dry type film, inkjet printing dry type film and the thermal printing dry type film polyester film base back side all there is smooth performance and electrostatic-proof function poor, adhesion phenomenon is produced in print procedure, cross machine poor performance, therefore need the back side to carry out coating to improve smooth performance and electrostatic-proof function, cost is higher.Simultaneously there is bad phenomenon in the bottom of part thermal printing dry type film polyester film base and thermographic layer adhesive force.
Summary of the invention
The object of this invention is to provide a kind of dry type medical film polyester film base, by online two-sided barrier coating and backing layer aqueous high molecular material respectively, not only improve the adhesive force of film support and thermographic layer, complete backing layer coating simultaneously, improve smooth performance and antistatic performance, there is good machine excessively, smooth coating process and antistatic coating process is carried out again without the need to follow-up, simplify process of manufacture, reduce cost, combination property is more excellent.
The object of the invention is to be achieved through the following technical solutions:
A kind of dry type medical film polyester film base, comprise film support, bottom and backing layer, wherein, bottom and backing layer are coated on the two sides of film support respectively by online coating; Described underlayer thickness is 0.1 μm ~ 1.0 μm, is preferably 0.2 μm ~ 0.8 μm.
Above-mentioned dry type medical film polyester film base, described backing layer thickness is 0.2 μm ~ 5.0 μm, is preferably 0.5 μm ~ 3.0 μm.
Above-mentioned dry type medical film polyester film base, described bottom contains adhesive, crosslinking agent, the first matting agent, the first auxiliary agent and deionized water, and the percentage by weight of each component is as follows:
Adhesive 5% ~ 55%
Crosslinking agent 0.3% ~ 4%
First matting agent 0.3% ~ 3%
First auxiliary agent 3% ~ 5%
Deionized water 40% ~ 85%.
Above-mentioned dry type medical film polyester film base, described backing layer contains resin, crosslinking agent, the second matting agent, the second auxiliary agent, antistatic additive and deionized water, and the percentage by weight of each raw material is as follows:
Resin 8% ~ 45%
Crosslinking agent 0.5% ~ 3.5%
Second matting agent 2% ~ 15%
Second auxiliary agent 2% ~ 5%
Antistatic additive 4% ~ 10%
Deionized water 40% ~ 60%.
Above-mentioned dry type medical film polyester film base, described adhesive is one or more in the multi-component adhesive of polyester, polyvinyl alcohol, polyacrylate, polyurethane, MS modified silane, epoxy resin, gelatin, styrene-butadiene latex or phenolic aldehyde-epoxy type modification, preferred styrene-butadiene latex, polyvinyl alcohol and polyacrylate mixed type adhesive.
Above-mentioned dry type medical film polyester film base, described antistatic additive is polythiophene Polymer-metallic Catalyst, cationic antistatic agent, preferred polythiophene Polymer-metallic Catalyst.
Above-mentioned dry type medical film polyester film base, described first matting agent is Ludox or polymethyl methacrylate, preferred Ludox.Described first auxiliary agent is surfactant, can be ionic surfactant or nonionic surface active agent.
Above-mentioned dry type medical film polyester film base, described second matting agent is one or more in Ludox, polymethyl methacrylate, fluoropolymer, long-chain fatty acid ester or silicone derivative, preferred polymethyl methacrylate mixes matting agent with Ludox, polymethyl methacrylate particle diameter is 0.5 μm ~ 5 μm, and described Ludox particle diameter is 0.01 μm ~ 1.0 μm.Described second auxiliary agent is levelling agent, can be surfactant, polyacrylic acid or carboxymethyl cellulose.
Above-mentioned dry type medical film polyester film base, described resin is the hybrid resin of one or more in polyester, polyurethane, polyacrylate, preferred polyester and polyurethane.
Above-mentioned dry type medical film polyester film base, described second matting agent surface topography can be the spherical or irregular shape of rule, and the roughness value Ra of described backing layer is at least more than 0.05.
Prepare a method for dry type medical film polyester film base, concrete steps are:
First by film support on coating machine after sided corona treatment, by the mode that intaglio plate coating or Mayer are coated with, bottom coating fluid and backing layer coating fluid are uniformly coated on film support surface by the mode of online double spread, obtained bottom and backing layer, rolling after the drying of 100 DEG C of hot blasts at least 30s, obtained dry type medical film polyester film base.
Beneficial effect of the present invention is:
1, the present invention is directly coated with backing layer coating fluid in the one side of polyester film base, by being once coated with, realizes the combination of backing layer and bottom, carries out smooth coating process and antistatic coating process again, simplify production technology without the need to follow-up.
2, the present invention is by optimizing bottom formula, preferred composition and material type, and add antistatic agent, the bottom of thermal printing dry type film polyester film base and thermographic layer is made to have excellent adhesive force, by optimizing the formula of backing layer, preferred feed, improves smooth performance and antistatic performance, adhesion in film printing process, has good machine excessively.
Accompanying drawing explanation
Fig. 1 is the structural representation of dry type medical film polyester film base.
In figure, each label is expressed as: 1, film support, and 2, bottom, 3, backing layer.
Detailed description of the invention
Film support of the present invention is celluloid, cellulose triacetate, polyester, preferred polyester.
Underlayer thickness of the present invention is 0.1 μm ~ 1.0 μm, if underlayer thickness is too little, the adhesive force of film support and imaging layer is reduced; If underlayer thickness is too large, cause the increase of coating material and the increase of energy consumption in production process, production cost increases.So underlayer thickness of the present invention is preferably 0.2 μm ~ 0.8 μm.
Backing layer thickness of the present invention is 0.2 μm ~ 5.0 μm, if backing layer thickness is too little, sheet primary surface does not reach certain roughness, causes machine poor performance; If backing layer thickness is too large, cause the increase of coating material and the increase of energy consumption in production process, production cost increases.So backing layer thickness of the present invention is preferably 0.5 μm ~ 3.0 μm.
Second matting agent of the present invention is the mixing matting agent of one or more in Ludox, polymethyl methacrylate, fluoropolymer, long-chain fatty acid ester or silicone derivative, preferred polymethyl methacrylate and Ludox.Matting agent particle diameter of the present invention will control in certain scope, and matting agent particle diameter is too little, and surface roughness effect is bad; Matting agent particle diameter is excessive, easily comes off; Used in combination by organic matting agent and inorganic matting agent different-grain diameter scope, makes sheet primary surface have certain surface roughness and anti-stickly connect effect.Polymethyl methacrylate particle diameter of the present invention is preferably 0.5 μm ~ 5 μm, and Ludox particle diameter of the present invention is preferably 0.01 μm ~ 1.0 μm.
Crosslinking agent of the present invention is melamine, oxazoline or nitrogen pyridine, preferred melamine.
Dry type medical film polyester film base of the present invention is all-transparent or milky or blueness.
Below in conjunction with embodiment, the present invention is described further:
Embodiment 1
Prepared by bottom coating fluid:
First by 10g deionized water and 3g first auxiliary agent (surfactant, the trade mark is FES-993, Guangzhou Kai Shi Chemical Co., Ltd.) premix obtains A liquid, then by 75g deionized water and 5g adhesive, ((trade mark is SD332N to 2g styrene-butadiene latex, BASF), (trade mark is 1788 to 2g polyvinyl alcohol, Shanghai Kai Du industry development Co., Ltd), 1g polyacrylate (the trade mark 941, Guangzhou Sheng Xin Chemical Industry Science Co., Ltd)) premix obtains B liquid, finally A liquid is slowly joined in B liquid, stir and add 0.3g crosslinking agent after ten minutes (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City), continuation stirring adds 0.3g first matting agent after ten minutes (trade mark is 14808-60-7, Shanghai Ze Cheng Chemical Co., Ltd.) obtained bottom coating fluid.
Prepared by backing layer coating fluid:
First by 10g deionized water and 2g second auxiliary agent (levelling agent, the trade mark is PE-100, Guangzhou Heng Yu Chemical Co., Ltd.) (trade mark is SN slowly to add 4g antistatic additive after mix and blend 2min, Tong Lin chemical products Co., Ltd of Zhengzhou City), then by 50g deionized water and 8g resin, ((trade mark is 3300S# to 4g polyester, Dongguan City Wan Jie Chemical Co., Ltd.), (trade mark is 901 to 4g polyurethane, Xiamen Li get Wei Chemical Co., Ltd.)) premix stirs and slowly adds 0.5g crosslinking agent after 2min (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City) obtained B liquid, finally A liquid is slowly joined in B liquid, stir and add 2g second matting agent after ten minutes ((trade mark is V040 to 1g polymethyl methacrylate, Dongguan City You Chang engineering plastics Co., Ltd), (trade mark is LY-57 to 1g Ludox, Guangzhou Han Ju macromolecular material Chemical Co., Ltd.)), obtained backing layer coating fluid.
At the coating fluid that thickness is 100 μm of above-mentioned preparations of the online coating in film support surface, obtain bottom and backing layer, the thickness of bottom is 0.2 μm, and the thickness of backing layer is 0.5 μm, finally obtains a kind of dry type medical film polyester film base.
Embodiment 2
The preparation of bottom coating fluid:
First by 10g deionized water and 3.5g first auxiliary agent (surfactant, the trade mark is FES-993, Guangzhou Kai Shi Chemical Co., Ltd.) premix obtains A liquid, then by 40g deionized water and 25g adhesive, ((trade mark is SD332N to 10g styrene-butadiene latex, BASF), (trade mark is 1788 to 10g polyvinyl alcohol, Shanghai Kai Du industry development Co., Ltd), 5g polyacrylate (the trade mark 941, Guangzhou Sheng Xin Chemical Industry Science Co., Ltd)) premix obtains B liquid, finally A liquid is slowly joined in B liquid, stir and add 1.5g crosslinking agent after ten minutes (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City), continuation stirring adds 0.8g first matting agent after ten minutes (trade mark is 14808-60-7, Shanghai Ze Cheng Chemical Co., Ltd.) obtained bottom coating fluid.
The preparation of backing layer coating fluid:
First by 10g deionized water and 4g second auxiliary agent (levelling agent, the trade mark is PE-100, Guangzhou Heng Yu Chemical Co., Ltd.) (trade mark is SN slowly to add 5g antistatic additive after mix and blend 2min, Tong Lin chemical products Co., Ltd of Zhengzhou City), then by 45g deionized water and 15g resin, ((trade mark is 3300S# to 7.5g polyester, Dongguan City Wan Jie Chemical Co., Ltd.), (trade mark is 901 to 7.5g polyurethane, Xiamen Li get Wei Chemical Co., Ltd.)) premix stirs and slowly adds 1.0g crosslinking agent after 2min (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City) obtained B liquid, finally A liquid is slowly joined in B liquid, stir and add 12g second matting agent after ten minutes ((trade mark is V040 to 6g polymethyl methacrylate, Dongguan City You Chang engineering plastics Co., Ltd), (trade mark is 7631-86-9 to 6g Ludox, Shandong Ding Xiang Science and Technology Ltd.)), obtained backing layer coating fluid.
At the coating fluid that thickness is 125 μm of above-mentioned preparations of the online coating in film support surface, obtain bottom and backing layer, the thickness of bottom is 0.3 μm, and the thickness of backing layer is 1.0 μm.Finally obtain a kind of dry type medical film polyester film base.
Embodiment 3
The preparation of bottom coating fluid:
First by 10g deionized water and 4g first auxiliary agent (surfactant, the trade mark is FES-993, Guangzhou Kai Shi Chemical Co., Ltd.) premix obtains A liquid, then by 50g deionized water and 35g adhesive, ((trade mark is SD332N to 14g styrene-butadiene latex, BASF), (trade mark is 1788 to 14g polyvinyl alcohol, Shanghai Kai Du industry development Co., Ltd), 7g polyacrylate (the trade mark 941, Guangzhou Sheng Xin Chemical Industry Science Co., Ltd)) premix obtains B liquid, finally A liquid is slowly joined in B liquid, stir and add 2.0g crosslinking agent after ten minutes (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City), continuation stirring adds 1.2g first matting agent after ten minutes (trade mark is 14808-60-7, Shanghai Ze Cheng Chemical Co., Ltd.) obtained bottom coating fluid.
The preparation of backing layer coating fluid:
First by 10g deionized water and 3.5g second auxiliary agent (levelling agent, the trade mark is PE-100, Guangzhou Heng Yu Chemical Co., Ltd.) (trade mark is SN slowly to add 7g antistatic additive after mix and blend 2min, Tong Lin chemical products Co., Ltd of Zhengzhou City), then by 40g deionized water and 25g resin, ((trade mark is 3300S# to 12.5g polyester, Dongguan City Wan Jie Chemical Co., Ltd.), (trade mark is 901 to 12.5g polyurethane, Xiamen Li get Wei Chemical Co., Ltd.)) premix stirs and slowly adds 1.7g crosslinking agent after 2min (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City) obtained B liquid, finally A liquid is slowly joined in B liquid, stir and add 8g second matting agent after ten minutes ((trade mark is MA-50 to 4g polymethyl methacrylate, Dongguan City three closes Chemical Co., Ltd.), (trade mark is FR-250 to 4g Ludox, Hong Yuan Chemical Company)), obtained backing layer coating fluid.
Be the coating fluid of the above-mentioned preparation of the online coating in film support surface of 150 μm at thickness, obtain bottom and backing layer, the thickness of bottom is 0.5 μm, and the thickness of backing layer is 1.5 μm.Finally obtain a kind of dry type medical film polyester film base.
Embodiment 4
The preparation of bottom coating fluid:
First by 10g deionized water and 3.5g first auxiliary agent (surfactant, the trade mark is FES-993, Guangzhou Kai Shi Chemical Co., Ltd.) premix obtains A liquid, then by 35g deionized water and 50g adhesive, ((trade mark is SD332N to 20g styrene-butadiene latex, BASF), (trade mark is 1788 to 20g polyvinyl alcohol, Shanghai Kai Du industry development Co., Ltd), 10g polyacrylate (the trade mark 941, Guangzhou Sheng Xin Chemical Industry Science Co., Ltd)) premix obtains B liquid, finally A liquid is slowly joined in B liquid, stir and add 3.0g crosslinking agent after ten minutes (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City), continuation stirring adds 2.5g first matting agent after ten minutes (trade mark is 14808-60-7, Shanghai Ze Cheng Chemical Co., Ltd.) obtained bottom coating fluid.
The preparation of backing layer coating fluid:
First by 10g deionized water and 4g second auxiliary agent (levelling agent, the trade mark is PE-100, Guangzhou Heng Yu Chemical Co., Ltd.) (trade mark is SN slowly to add 8g antistatic additive after mix and blend 2min, Tong Lin chemical products Co., Ltd of Zhengzhou City), then by 35g deionized water and 40g resin, ((trade mark is 3300S# to 20g polyester, Dongguan City Wan Jie Chemical Co., Ltd.), (trade mark is 901 to 20g polyurethane, Xiamen Li get Wei Chemical Co., Ltd.)) premix stirs and slowly adds 2.5g crosslinking agent after 2min (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City) obtained B liquid, finally A liquid is slowly joined in B liquid, stir and add 4g second matting agent after ten minutes ((trade mark is HY-690 to 2g polymethyl methacrylate, sea powder spreading body Science and Technology Ltd. of Shenzhen), (trade mark is CT-199 to 2g Ludox, prosperous safe micro-nano chemical plant, Shouguang City of Shandong Province)), obtained backing layer coating fluid.
Be the coating fluid of the above-mentioned preparation of the online coating in film support surface of 175 μm at thickness, obtain bottom and backing layer, the thickness of bottom is 0.7 μm, and the thickness of backing layer is 2.5 μm.Finally obtain a kind of dry type medical film polyester film base.
Embodiment 5
The preparation of bottom coating fluid:
First by 10g deionized water and 5g first auxiliary agent (surfactant, the trade mark is FES-993, Guangzhou Kai Shi Chemical Co., Ltd.) premix obtains A liquid, then by 30g deionized water and 55g adhesive, ((trade mark is SD332N to 22g styrene-butadiene latex, BASF), (trade mark is 1788 to 22g polyvinyl alcohol, Shanghai Kai Du industry development Co., Ltd), 11g polyacrylate (the trade mark 941, Guangzhou Sheng Xin Chemical Industry Science Co., Ltd)) premix obtains B liquid, finally A liquid is slowly joined in B liquid, stir and add 4g crosslinking agent after ten minutes (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City), continuation stirring adds 3.0g first matting agent after ten minutes (trade mark is 14808-60-7, Shanghai Ze Cheng Chemical Co., Ltd.) obtained bottom coating fluid.
The preparation of backing layer coating fluid:
First by 10g deionized water and 5g second auxiliary agent (levelling agent, the trade mark is PE-100, Guangzhou Heng Yu Chemical Co., Ltd.) (trade mark is SN slowly to add 10g antistatic additive after mix and blend 2min, Tong Lin chemical products Co., Ltd of Zhengzhou City), then by 30g deionized water and 45g resin, ((trade mark is 3300S# to 22.5g polyester, Dongguan City Wan Jie Chemical Co., Ltd.), (trade mark is 901 to 22.5g polyurethane, Xiamen Li get Wei Chemical Co., Ltd.)) premix stirs and slowly adds 3.5g crosslinking agent after 2min (trade mark is LF-8500, Fu Neng resin Co., Ltd of Linan City) obtained B liquid, finally A liquid is slowly joined in B liquid, stir and add 15g second matting agent after ten minutes ((trade mark is J-592 to 7.5g polymethyl methacrylate, Guangzhou Xing Jia Chemical Co., Ltd.), (trade mark is 25ST to 7.5g Ludox, Shanghai Chemical Co., Ltd. of Hang Seng)), obtained backing layer coating fluid.
Be the coating fluid of the above-mentioned preparation of the online coating in film support surface of 250 μm at thickness, obtain bottom and backing layer, the thickness of bottom is 0.8 μm, and the thickness of backing layer is 3.0 μm.Finally obtain a kind of dry type medical film polyester film base.
Comparative example 1
First bottom coating fluid is uniformly coated on the two sides of film support by the mode of online double spread, obtained a kind of dry type medical film polyester film base.
Properties method of testing is as follows:
(1) adhesive force test: testing example round floor is to the adhesive force of medical film thermographic layer, baking oven is put into after the imaging layer liquid of thickness 10-20 μm being applied to the round floor of embodiment polyester film with square spreader, 1h is dried under the condition of 100 DEG C, then take out print and carry out final adhesive force test, the method for clicking is graded:
◆: after firmly rubbing print, imaging layer does not come off;
◇: after firmly rubbing print, imaging layer slightly comes off;
×: after firmly rubbing print, imaging layer large area comes off;
(2) backing layer resistance value method of testing: GB/T1410-2006;
(3) backing layer crosses machine method of testing: in film printing, and crossing machine adhesion is then zero; Adhesion is then ×.
(4) backing layer surface roughness method of testing: use TR200 surfagauge to test.
Table 1
As can be seen from above table (1), film support in the present invention and thermographic layer adhesive force more excellent, and possess excellent antistatic performance and smooth performance, adhesion in film printing process, possess good machine excessively, combination property is more excellent.
Claims (10)
1. a dry type medical film polyester film base, it is characterized in that, comprise film support (1), bottom (2), backing layer (3), it is characterized in that, described bottom (2) and backing layer (3) are coated on the two sides of film support (1) respectively by online coating technique; The thickness of described bottom (2) is 0.1 μm ~ 1.0 μm, and the thickness of described backing layer (3) is 0.2 μm ~ 5.0 μm.
2. dry type medical film polyester film base according to claim 1, is characterized in that, the component that described bottom (2) forms containing following percentage by weight:
Adhesive 5% ~ 55%
Crosslinking agent 0.5% ~ 4%
Matting agent 0.3% ~ 3%
First auxiliary agent 3% ~ 5%
Deionized water 40% ~ 85%.
3. dry type medical film polyester film base according to claim 2, is characterized in that, the component that described backing layer (3) forms containing following percentage by weight:
Resin 8% ~ 45%
Crosslinking agent 0.5% ~ 3.5%
Matting agent 2% ~ 15%
Second auxiliary agent 2% ~ 5%
Antistatic additive 4% ~ 10%
Deionized water 40% ~ 60%.
4. dry type medical film polyester film base according to claim 3, it is characterized in that, described adhesive is one or more in the multi-component adhesive of polyester, polyvinyl alcohol, polyacrylate, polyurethane, MS modified silane, epoxy resin, gelatin, styrene-butadiene latex or phenolic aldehyde-epoxy type modification, preferred styrene-butadiene latex, polyvinyl alcohol and polyacrylate mixed type adhesive.
5. dry type medical film polyester film base according to claim 4, is characterized in that, described matting agent is Ludox or polymethyl methacrylate, preferred Ludox, and described first auxiliary agent is ionic surfactant or nonionic surface active agent.
6. dry type medical film polyester film base according to claim 5, is characterized in that, described antistatic additive is polythiophene Polymer-metallic Catalyst, cationic antistatic agent, preferred polythiophene Polymer-metallic Catalyst.
7. dry type medical film polyester film base according to claim 6, it is characterized in that, described matting agent is one or more in Ludox, polymethyl methacrylate, fluoropolymer, long-chain fatty acid ester or silicone derivative, preferred polymethyl methacrylate mixes matting agent with Ludox, polymethyl methacrylate particle diameter is 0.5 μm ~ 5 μm, described Ludox particle diameter is 0.01 μm ~ 1.0 μm, described second auxiliary agent is levelling agent, is selected from the one in surfactant, polyacrylic acid or carboxymethyl cellulose.
8. dry type medical film polyester film base according to claim 7, described resin is the hybrid resin of one or more in polyester, polyurethane, polyacrylate, preferred polyester and polyurethane.
9. dry type medical film polyester film base according to claim 8, described matting agent surface topography can be the spherical or irregular shape of rule, and the roughness value Ra of described backing layer is at least more than 0.05.
10. prepare a method for the dry type medical film polyester film base as described in claim as arbitrary in claim 1 to 9, it is characterized in that, carry out as follows:
First by film support on coating machine after sided corona treatment, by the mode that intaglio plate coating or Mayer are coated with, bottom coating fluid and backing layer coating fluid are uniformly coated on film support surface by the mode of online double spread, obtained bottom and backing layer, rolling after the drying of 100 DEG C of hot blasts at least 30s, obtained described dry type medical film polyester film base.
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