CN103374097A - Radiation-protection filtering contact lenses and production method therefor - Google Patents
Radiation-protection filtering contact lenses and production method therefor Download PDFInfo
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- CN103374097A CN103374097A CN2012101060458A CN201210106045A CN103374097A CN 103374097 A CN103374097 A CN 103374097A CN 2012101060458 A CN2012101060458 A CN 2012101060458A CN 201210106045 A CN201210106045 A CN 201210106045A CN 103374097 A CN103374097 A CN 103374097A
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Abstract
Provided is a contact lens material. The material is characterized by comprising liquid raw materials, by weight, 90-100 parts of hydroxyethyl methylacrylate, 10-12 parts of n-vinyl pyrrolidone, 0.3-0.4 part of ethylene glycol dimethacrylate, 0.15-0.2 part of azodiisobutyronitrile and 0.7-1 part of yellow UV absorbents for contact lenses. The contact lenses have good oxygen permeation coefficient, good moisture content, moderate hardness and less residual components, and have functions of good ultraviolet protection and filtration of purple light and blue light.
Description
Technical field
The present invention relates to a kind of material and manufacture method thereof of contact lens, on contact lens traditional manufacturing technology basis, by adding new material, changed the optical property of contact lens.
The present invention adopts a kind of novel control light technology, except the function of filtering ultraviolet light, can effectively control wavelength 450NM following shortwave purple light and blue light components.Optical property of the present invention makes contact lens can effectively defend optical radiation to the photochemical damage of ocular tissue.
Background technology
As everyone knows, UV-light not only can be killed virus, can cause larger injury to human body skin and eyes simultaneously, such as keratitis, the cataract of optical radiation initiation; Simultaneously, exist the short wavelength components such as purple light and blue light can retina be caused serious injury in the visible light, such as treating senile maculopathy.Visual discomfort even eye illness occur in people easily in the high luminous environment of UV-light, short wavelength light component proportions.As: asthenopia occurs in luminescent lamp, screen luminous environment easily, even the cloudy day in snowfield, still visual discomfort can occur, the impressions such as eyeball shouting pain, even snow blindness occurs, plateau and long-term outdoor study crowd, eyes are opened not open when snowfield walking or water surface work, have to narrow eyes, force to dwindle pupil, cause cataract incidence to increase; Same under strong artificial light, people can feel that also eyes have shouting pain uncomfortable, and above-mentioned objective phenomenon illustrates that all UV-light and short wavelength light have larger injury to our eyes; If asthenopia then occurs easily for long-term study under the environment of this light pollution, work, cause various ophthalmic diseasess.Present various artificial light is more and more, optical efficiency is also more and more higher, UV-light wherein, short wavelength light are along with the raising ratio of light source color temperature is also more high-strength, follow popularizing of computer and various screens, serious luminous environment pollutes and a higher requirement of using, need to adopt new means of defence, improve the adaptive faculty of eyes, safeguard eye health.
Present contact lens are accepted by a lot of people, wear contact lens and can reach light, attractive in appearance, fashion, the indeformable effect of correcting defects of vision, but its all be can not filtering ultraviolet light and the material of short wavelength light consist of, the uv-protection performance of contact lens is not high, more do not possess purple light, the light-operated performance of blue light, be the purpose that preventing ultraviolet again can filtering shortwave harmful light if reach, also need to wear separately other functional glasses, so namely heavy loaded down with trivial details not attractive in appearance yet, it is well-illuminated to the more important thing is that sun glasses has reduced light, things is unclear under dark situation, has lost the meaning of wearing contact lens.
Summary of the invention
Purpose of the present invention just provides a kind of light-filtering contact lens of novelty, this contact lens energy filtering ultraviolet light, can control again filtering part purple light and blue light (being that wavelength is the shortwave light of 380-450nm) component, the visible light more than the 450nm is then preferentially seen through.Use the present invention can effectively defend the photochemistry injury of optical radiation, can obtain better visual quality simultaneously, make people can both clearly look thing than low light environment with in than the high light environment, distinguish that look soft.
A kind of contact lens material, the weight ratio of each component of liquid starting material is:
Hydroxyethyl methylacrylate: 90-100 part;
N-vinyl pyrrolidone: 10-12 part;
Ethylene glycol dimethacrylate: 0.3-0.5 part;
Diisopropyl azodicarboxylate: 0.15-0.2 part;
Contact lens are with yellow UV absorption agent: 0.7-1 part;
Above-mentioned a kind of contact lens material is characterized in that: described contact lens with yellow UV absorption agent be methacrylic acid azobenzene ester or 2-(2 '-hydroxyl-5 '-isopropyl olefin(e) acid ethoxycarbonyl phenyl)-the 2H-benzotriazole.
Use a kind of contact lens material of the present invention to make the method for contact lens, wherein, comprise successively following manufacture technology and method:
(1) make half: make a punch, the curvature of its bottom inside is identical with the curvature of contact lens, as the forming mould of contact lens;
(2) moulding of contact lens blank material: the liquid starting material of contact lens injected drying forming is eyeglass contact lens blank material in the half, complex body of this eyeglass contact lens blank material and half formation;
(3) turning blank: cut the spherical shape that is processed into needs with the sidecar that lathe exposes the eyeglass contact lens blank material on the complex body;
(4) grinding of turning surface: turning surface is carried out surface grinding process, to eliminate the vestige of turning;
(5) demoulding: eyeglass and half are broken away from;
(6) grind spectacle lens edge.
The production method of contact lens of the present invention, wherein, the making processes of half comprises in (one) step:
A, punch are manufactured
(1) raw material stoving: an amount of PBT particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PBT feed particulate material of having dried in the charging basket;
(3), installation mold: half is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the half packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
B, die are manufactured
(1) raw material stoving: an amount of PP particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PP feed particulate material of having dried in the charging basket;
(3), installation mold: half is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the half packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
The production method of contact lens of the present invention, wherein, the making processes of contact lens blank material comprises in (two) step:
(1), half is dried, bake out temperature is 100 ℃;
(2), in proportion be mixed with contact lens liquid raw material, stirred 2～4 hours after the preparation;
(3), will the contact lens liquid raw material for preparing cast in the half after the oven dry;
(4), with contact lens liquid raw material and the half oven dry of tunnel type baking oven with casting, it is three warm areas that tunnel type baking oven is divided into: being introduced into the first warm area, is the reflection district, and first district's temperature is controlled at 62 ± 0.2 ℃, and reflecting time is one hour; Enter the second warm area again, be polymeric area, the Second Region temperature is controlled at 82 ± 0.2 ℃, and polymerization time is one hour; Enter at last three-temperature-zone, be baking zone, the 3rd district's temperature is controlled at 105 ± 0.2 ℃, and bake out temperature is one hour.
The production method of contact lens of the present invention, wherein, in (four) step, the grinding of turning surface comprises: the eyeglass after the turning is installed on the positive axis surface grinding machine, employing forms grinding cup by polishing cloth, polishing sponge and polishing rotor, by the rotation of axle and the variation of putting, the eyeglass turning surface is carried out milled processed.Milling time is about 1 minute.
The production method of contact lens of the present invention, wherein, in (five) step, the demoulding is carried out at stripper, and eyeglass and half are broken away from.
The production method of contact lens of the present invention, wherein, in (six) step, grind spectacle lens edge: the semi-finished lenses of finishing the demoulding is placed on the positive axis shredder and with vacuum pump eyeglass is adsorbed on fixedly on the suction nozzle, eyeglass and abrasive substance be simultaneously rotation at an angle of 90, grinds about 1 minute.
Use a kind of contact lens material of the present invention to make the method for contact lens, wherein, comprise successively following manufacture technology and method:
(1) make full mould mould: make a punch, the curvature of its bottom inside is identical with the curvature of contact lens, as the forming mould of contact lens; Make a die, its outside inboard curvature is the luminosity of contact lens.
(2) moulding of full mould contact lens: carry out the pressing drying forming in the full mould mould that the liquid starting material of contact lens is injected.
(3) demoulding: die and punch are detached the contact lens dry plate;
The production method of contact lens of the present invention, wherein, the making processes of full mould mould comprises in (one) step:
A, punch are manufactured
(1) raw material stoving: an amount of PBT particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PBT feed particulate material of having dried in the charging basket;
(3), installation mold: mould is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the convex mold packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
B, die are manufactured
(1) raw material stoving: an amount of PP particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PP feed particulate material of having dried in the charging basket;
(3), installation mold: mould is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the negative mold packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
The production method of contact lens of the present invention, wherein, the making processes of contact lens dry plate comprises in (two) step:
(1), punch and concave die oven dry, bake out temperature is 100 ℃;
(2), in proportion be mixed with contact lens liquid raw material, stirred 2～4 hours after the preparation;
(3), will the contact lens liquid raw material for preparing cast in the concave die after the oven dry, then punch and die are carried out pressing;
(4), with tunnel type baking oven with the oven dry of contact lens liquid raw material and mould, it is three warm areas that tunnel type baking oven is divided into: being introduced into the first warm area, is the reflection district, and first district's temperature is controlled at 62 ± 0.2 ℃, and reflecting time is one hour; Enter the second warm area again, be polymeric area, the Second Region temperature is controlled at 82 ± 0.2 ℃, and polymerization time is one hour; Enter at last three-temperature-zone, be baking zone, the 3rd district's temperature is controlled at 105 ± 0.2 ℃, and bake out temperature is one hour.
The production method of contact lens of the present invention, wherein, in (three) step, the demoulding is carried out at stripper, makes eyeglass and mould separating.
Contact lens of the present invention can be obtained good oxygen transmission coefficient, water ratio and can obtain good ultraviolet protection and the filtering effect of purple light, blue light.
Embodiment
Embodiment 1
Hydroxyethyl methylacrylate: 90 parts;
N-vinyl pyrrolidone: 10 parts;
Ethylene glycol dimethacrylate: 0.3 part;
Diisopropyl azodicarboxylate: 0.15 part;
0.7 part of methacrylic acid azobenzene ester.
Use the method for the contact lens material making contact lens of this enforcement, may further comprise the steps successively:
Step (one) is made half: make a punch, the curvature of its bottom inside is identical with the curvature of contact lens, as the forming mould of contact lens.
The making processes of half comprises:
(1), raw material stoving: an amount of PBT particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PBT feed particulate material of having dried in the charging basket;
(3), installation mold: half is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the half packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
The moulding of step (two) contact lens blank material: drying forming is eyeglass contact lens blank material in the half that the liquid starting material of contact lens is injected, complex body of this eyeglass contact lens blank material and half formation.
The making processes of contact lens blank material comprises:
(1), half is dried, bake out temperature is 100 ℃;
(2), in proportion be mixed with contact lens liquid raw material, stirred 2～4 hours after the preparation;
(3), the contact lens liquid raw material for preparing is cast in the half after the oven dry;
(4), with contact lens liquid raw material and the half oven dry of tunnel type baking oven with casting, it is three warm areas that tunnel type baking oven is divided into: being introduced into the first warm area, is the reflection district, and first district's temperature is controlled at 62 ± 0.2 ℃, and reflecting time is one hour; Enter the second warm area again, be polymeric area, the Second Region temperature is controlled at 82 ± 0.2 ℃, and polymerization time is one hour; Enter at last three-temperature-zone, be baking zone, the 3rd district's temperature is controlled at 105 ± 0.2 ℃, and bake out temperature is one hour.
Step (three) turning blank: the blank raw material is fixed on the turning axle of lathe, adjusts center thickness, Guang Qu, edge thickness imaging.Rotation by turning axle is carried out turning to contact lens blank material during with the spherical rotary lathe tool and is shaped.
The grinding of step (four) turning surface: turning surface is carried out surface grinding process, to eliminate the vestige of turning; Concrete steps are: the eyeglass after the turning is installed on the positive axis surface grinding machine, employing forms grinding cup by polishing cloth, polishing sponge and polishing rotor, by the rotation of axle and the variation of putting, the eyeglass turning surface is carried out milled processed, milling time is about 1 minute.
Step (five) demoulding: eyeglass and half are broken away from: the demoulding is carried out at centrifugal stripper, namely the eyeglass that has ground a side surface and half is installed on the centrifugal stripper and pushes, and makes the disengaging of eyeglass and half.
Step (six) grind spectacle lens edge is placed on the semi-finished lenses of finishing the demoulding on the positive axis shredder and with vacuum pump eyeglass is adsorbed on fixedly on the suction nozzle, and eyeglass and abrasive substance rotate at an angle of 90 simultaneously, grind about 1 minute.
The contact lens of gained is carried out following test:
Oxygen transmission coefficient (DK)
Adopt GTG (gas is to gas) analyser (REHDER DEVELOPMENT COMANY) (U.S.) manufacturing, minute 2 minutes, measure 35 ℃ of temperature, adopt the ISO9912-2 standard to convert the numerical value that obtains, obtain the DK value, the DK value means oxygen transmission coefficient value [(cm2/sec) (mLO2/mLmmHg)], particularly in the oxygen transmission coefficient value with 10-11 on duty, the results are shown in Table 1.
Water ratio
The contact lens of thickness 0.5mm (dry after) take 10 as 1 group, measuring every group of weight (A[g]) has contained in the sample bottle of distilled water in 25 ℃ of dippings after 24 hours, the moistening weight of mensuration contact lens (B[g]), click formula and calculate water ratio, the results are shown in Table 1.
Water ratio (%)=(B-A)/A} * 100
Optical index parameter (ultraviolet, blue light damage rejection rate)
Survey eyeglass sample is placed on the monitor station of TM-2 spectrograph (opening up Pu Kang), in system, set the scope of the relevant wavelength numerical value of absorption and transmission, transmittance to two kinds of ultraviolet bands of UV-A, UV-B is carried out quantitative measurement, and the data that gather are carried out Calculation Comparison, simultaneously with the light beam direct irradiation on the eyeglass sample, measure the energy height that sees through the eyeglass light beam, calculate again the transmittance of this wave band according to the energy of transmission.The results are shown in Table 1.
Embodiment 2-5
Embodiment 2-5 carries out same operation with embodiment 1 except the proportioning of component is changed, the results are shown in Table 1.
Table 1
Embodiment 6-10
Embodiment 6-10 is except the proportioning of component is changed, carry out same operation with embodiment 1, embodiment 6-10 and embodiment 1-5 difference be with 2-(2 '-hydroxyl-5 '-isopropyl olefin(e) acid ethoxycarbonyl phenyl)-the 2H-benzotriazole substitutes methacrylic acid azobenzene ester, the results are shown in Table 2.
Table 2
Comprehensive evaluation; the applicant finds by numerous experiments; each component is in the protection domain of this patent claim the time, and contact lens can be obtained good oxygen transmission coefficient, water ratio, and can play the filtering effect of good ultraviolet protection and purple light, blue light.
Claims (13)
1. contact lens material, the weight ratio of each component of liquid starting material is:
Hydroxyethyl methylacrylate: 90-100 part;
N-vinyl pyrrolidone: 10-12 part;
Ethylene glycol dimethacrylate: 0.3-0.5 part;
Diisopropyl azodicarboxylate: 0.15-0.2 part;
Contact lens are with yellow UV absorption agent: 0.7-1 part.
2. a kind of contact lens material as claimed in claim 1 is characterized in that: described contact lens with yellow UV absorption agent be methacrylic acid azobenzene ester or 2-(2 '-hydroxyl-5 '-isopropyl olefin(e) acid ethoxycarbonyl phenyl)-the 2H-benzotriazole.
3. use any one contact lens material as claimed in claim 1 or 2 to make the method for contact lens, it is characterized in that: comprise successively following manufacture technology and method:
(1) make half: make a punch, the curvature of its bottom inside is identical with the curvature of contact lens, as the forming mould of contact lens;
(2) moulding of contact lens blank material: the liquid starting material of contact lens injected drying forming is eyeglass contact lens blank material in the described half, this eyeglass contact lens blank material and half form a complex body;
(3) turning blank: cut the spherical shape that is processed into needs with the sidecar that lathe exposes the eyeglass contact lens blank material on the described complex body;
(4) grinding of turning surface: described turning surface is carried out surface grinding process, to eliminate the vestige of turning;
(5) demoulding: eyeglass and half are broken away from;
(6) grind spectacle lens edge.
4. the production method of contact lens according to claim 3, it is characterized in that: the making processes of half comprises in described (one) step:
A, punch are manufactured
(1) raw material stoving: an amount of PBT particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PBT feed particulate material of having dried in the charging basket;
(3), installation mold: described half is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the half packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
B, die are manufactured
(1), raw material stoving: an amount of PP particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PP feed particulate material of having dried in the charging basket;
(3), installation mold: described half is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the half packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
5. the production method of contact lens according to claim 3, it is characterized in that: the making processes of contact lens blank material comprises in described (two) step:
(1), the oven dry of described half, bake out temperature is 100 ℃;
(2), in proportion be mixed with contact lens liquid raw material, stirred 2～4 hours after the preparation;
(3), the described contact lens liquid raw material for preparing is cast in the half after the oven dry;
(4), with contact lens liquid raw material and the half oven dry of tunnel type baking oven with casting, it is three warm areas that tunnel type baking oven is divided into: being introduced into the first warm area, is the reflection district, and first district's temperature is controlled at 62 ± 0.2 ℃, and reflecting time is one hour; Enter the second warm area again, be polymeric area, the Second Region temperature is controlled at 82 ± 0.2 ℃, and polymerization time is one hour; Enter at last three-temperature-zone, be baking zone, the 3rd district's temperature is controlled at 105 ± 0.2 ℃, and bake out temperature is one hour.
6. the production method of contact lens according to claim 3, it is characterized in that: in described (four) step, the grinding of turning surface comprises: the eyeglass after the turning is installed on the positive axis surface grinding machine, employing forms grinding cup by polishing cloth, polishing sponge and polishing rotor, by the rotation of axle and the variation of putting, the eyeglass turning surface is carried out milled processed.
7. the production method of contact lens according to claim 6, it is characterized in that: described milling time is about 1 minute.
8. the production method of contact lens according to claim 3, it is characterized in that: in described (five) step, the demoulding is carried out at stripper, and eyeglass and half are broken away from.
9. the production method of contact lens according to claim 3, it is characterized in that: in described (six) step, grind spectacle lens edge: the semi-finished lenses of finishing the demoulding is placed on the positive axis shredder and with vacuum pump eyeglass is adsorbed on fixedly on the suction nozzle, eyeglass and abrasive substance be simultaneously rotation at an angle of 90, grinds about 1 minute.
10. use any one contact lens material as claimed in claim 1 or 2 to make the method for contact lens, it is characterized in that: comprise successively following manufacture technology and method:
(1) make full mould mould: make a punch, the curvature of its bottom inside is identical with the curvature of contact lens, as the forming mould of contact lens; Make a die, its outside inboard curvature is the luminosity of contact lens.
(2) moulding of full mould contact lens: the liquid starting material of contact lens injected in the described full mould mould carry out the pressing drying forming.
(3) demoulding: die and punch are detached the contact lens dry plate.
11. the production method of contact lens according to claim 10 is characterized in that: the making processes of full mould mould comprises in described (one) step:
A, punch are manufactured
(1) raw material stoving: an amount of PBT particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PBT feed particulate material of having dried in the charging basket;
(3), installation mold: described mould is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the convex mold packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
B, die are manufactured
(1) raw material stoving: an amount of PP particulate material is put into the baker oven dry take out afterwards stand-by;
(2), injection moulding machine is prepared: connect the injection moulding machine power supply, opening power so that injection moulding machine charging basket and injection moulding hot spots reach the requirement temperature, then joins the PP feed particulate material of having dried in the charging basket;
(3), installation mold: described mould is installed on the injection moulding machine on request, notes adjusting clamp force, make clamp force more as far as possible.
(4), injection moulding workpiece: set the injection moulding machine processing parameter by processing requirement, then begin piece;
(5), clean: the workpiece of accomplishing fluently is cleaned, dries;
(6), packing: the negative mold packing of cleaning after drying, carry out disinfection by ultraviolet light, warehouse-in on request.
12. the production method of contact lens according to claim 10 is characterized in that: the making processes of contact lens dry plate comprises in described (two) step:
(1), the oven dry of described punch and concave die, bake out temperature is 100 ℃;
(2), in proportion be mixed with contact lens liquid raw material, stirred 2～4 hours after the preparation;
(3), the described contact lens liquid raw material for preparing is cast in the concave die after the oven dry, then punch and die are carried out pressing;
(4), with tunnel type baking oven with the oven dry of contact lens liquid raw material and mould, it is three warm areas that tunnel type baking oven is divided into: being introduced into the first warm area, is the reflection district, and first district's temperature is controlled at 62 ± 0.2 ℃, and reflecting time is one hour; Enter the second warm area again, be polymeric area, the Second Region temperature is controlled at 82 ° ± 0.2 ℃, and polymerization time is one hour; Enter at last three-temperature-zone, be baking zone, the 3rd district's temperature is controlled at 105 ° ± 0.2 ℃, and bake out temperature is one hour.
13. the production method of contact lens according to claim 10 is characterized in that: in described (three) step, the demoulding is carried out at stripper, makes eyeglass and mould separating.
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| CN2012101060458A CN103374097A (en) | 2012-04-12 | 2012-04-12 | Radiation-protection filtering contact lenses and production method therefor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105599329A (en) * | 2015-12-28 | 2016-05-25 | 哈尔滨工业大学 | Preparing method of antibiosis antiultraviolet contact lenses |
| CN105729840A (en) * | 2014-12-11 | 2016-07-06 | 奇鼎科技股份有限公司 | Preparing method for blue-ray-resisting contact lenses |
| CN106478878A (en) * | 2015-08-26 | 2017-03-08 | 卓弘祥 | A kind of contact lenss processing technology integrating change normal complexion anti-ultraviolet |
| CN106597683A (en) * | 2017-01-05 | 2017-04-26 | 褚仕博 | Ultraviolet-proof healthcare multifunctional contact lens |
| CN109134747A (en) * | 2018-06-27 | 2019-01-04 | 周振宇 | The manufacturing method of contact lens material and contact lenses |
| CN110018578A (en) * | 2019-04-10 | 2019-07-16 | 军视康(北京)科技发展有限公司 | A kind of double light improvement of flat-top are near-sighted to promote uncorrected visual acuity eyeglass and manufacturing method |
| CN112225844A (en) * | 2020-09-24 | 2021-01-15 | 周振宇 | Contact lens material, contact lens containing contact lens material and preparation method of contact lens |
| CN114181635A (en) * | 2019-11-27 | 2022-03-15 | 河源轩朗光电科技有限公司 | Curved screen protection film |
| JP7399962B2 (en) | 2018-12-10 | 2023-12-18 | 株式会社シード | UV absorbing ophthalmic lenses |
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