CN103420594B - Seal strip groove edge sealing, the convex surface vacuum glass and preparation method thereof of sealing - Google Patents
Seal strip groove edge sealing, the convex surface vacuum glass and preparation method thereof of sealing Download PDFInfo
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- CN103420594B CN103420594B CN201310298925.4A CN201310298925A CN103420594B CN 103420594 B CN103420594 B CN 103420594B CN 201310298925 A CN201310298925 A CN 201310298925A CN 103420594 B CN103420594 B CN 103420594B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
A kind of seal strip groove edge sealing, the convex surface vacuum glass of sealing, it includes glass and lower glass, described upper glass and described lower glass are convex glasses, bleeding point is had on described upper glass, the periphery of described upper glass and described bleeding point has sealing strip, there are seal groove and sealing strip in the periphery of described lower glass and the corresponding position of described bleeding point, the periphery of described upper glass and described lower glass welds together by low temperature glass solder edge sealing stove at ambient pressure, described bleeding point utilizes brazing metal self-closed in vacuum drying oven, a vacuum layer closed is formed between described upper glass and described lower glass.This vacuum glass of the present invention and preparation method thereof technique is simple, and prepared vacuum glass and toughened vacuum glass can overcome deficiency of the prior art, can effectively ensure that the air-tightness of vacuum glass, and can increase its intensity and heat insulation and sound insulation value.
Description
Technical field
The present invention relates to glass post-processing technical field, particularly relate to convex surface vacuum glass of a kind of seal strip groove edge sealing, sealing and preparation method thereof.
Background technology
Vacuum glass is a kind of novel energy-saving glass, and vacuum glass not only can solve " breathing " problem of the double glazing of existing a large amount of use, and has that heat-and sound-insulating performance is good, wind pressure resistant strength is high, thickness is little and the advantage such as length in service life.Vacuum glass is typically made up of two to three sheet glass, forms cavity between two adjacent sheet glass, and the periphery at glass is provided with edge sealing structure, and cavity forms vacuum layer after being evacuated.Vacuum glass is different according to the mode forming vacuum layer, can be divided into two kinds, a kind of is the vacuum glass without bleeding point, and the edge sealing of this vacuum glass is carried out in vacuum drying oven, along with completing of edge sealing, the cavity self-assembling formation vacuum layer closed between two adjacent sheet glass；Another kind is the vacuum glass having bleeding point, carry out in the edge sealing of this vacuum glass high temperature furnace at ambient pressure, edge sealing passes through the prefabricated bleeding point cavity evacuation to being closed between glass after completing again, finally at end rear enclosed bleeding point of bleeding, completes the making of vacuum glass.
The patent of the vacuum glass that present invention applicant applied in October, 2012 discloses a series of vacuum glass without bleeding point and preparation method thereof, but when utilizing low temperature glass solder edge sealing, owing to low temperature glass solder is made up of many oxide, at high temperature, under vacuum, the air of solder wettable and moisture, volatile substances in solder, in gas that solder dissolves in process of production and solder, the decomposition etc. of partial oxide all can cause in solder and produce substantial amounts of bubble, significantly weaken the properties especially air-tightness of solder, the feasibility causing this kind of mode is greatly affected.The vacuum glass of existing mass production is all the vacuum glass having bleeding point, but there is complex manufacturing technology, extraction temperature low (bleeding the most thorough), monolithic evacuation, cost is high, production capacity is low, can not make the shortcomings such as toughened vacuum glass.
Summary of the invention
The technical problem to be solved is the defect being to exist for existing bleeding point vacuum glass, convex surface vacuum glass of a kind of seal strip groove edge sealing, sealing and preparation method thereof is provided, the manufacture method technique of this vacuum glass is simple, prepared vacuum glass and toughened vacuum glass can overcome deficiency of the prior art, can effectively ensure that air-tightness and the transparency of vacuum glass, and its intensity and heat insulation, sound insulation value can be increased.
In order to solve above-mentioned technical problem, the invention provides a kind of seal strip groove edge sealing, the convex surface vacuum glass of sealing, including upper glass and lower glass, described upper glass and described lower glass are convex glasses, bleeding point is had on described upper glass, the periphery of described upper glass and described bleeding point has sealing strip, there are sealing strip and seal groove in the periphery of described lower glass and the corresponding position of described bleeding point, the periphery of described upper glass and described lower glass welds together by low temperature glass solder edge sealing stove at ambient pressure, described bleeding point utilizes brazing metal self-closed in vacuum drying oven, a vacuum layer closed is formed between described upper glass and described lower glass.
In order to solve above-mentioned technical problem, the invention provides convex surface vacuum glass or the preparation method of convex surface toughened vacuum glass, comprising:
The first step, two pieces of flat glass up and down of the shapes and sizes cutting required size of the vacuum glass according to required making, edge at upper glass punches and makes bleeding point, offer seal groove at the periphery weld of lower glass and the corresponding position of bleeding point, and upper and lower two blocks of glass are carried out edging, chamfering, washing and drying treatment；
Second step, periphery at the periphery of upper glass and the periphery of bleeding point and seal groove prepares sealing strip, the sealing strip of upper glass is inserted in the seal groove of correspondence, glass up and down after processing loads hot bending die, is placed in bending furnace or annealing furnace, it is warming up to the temperature 550 of Glass Transition～750 DEG C, the gravity or the externally applied forces that rely on glass self make glass be formed down convex surface, and are down to room temperature with stove, or directly carry out tempering process；
3rd step, by even spread low temperature glass solder in the seal groove of lower glass periphery, upper and lower glass is sent in edge sealing stove after closing sheet；
4th step, carries out heat temperature raising operation to described edge sealing stove, is warming up to more than the melt temperature of low temperature glass solder, reaches edge sealing temperature, and the sealing strip of upper glass is under the action of gravity of glass in embedding sealing groove；Stopping heating, lower the temperature with stove, two blocks of glass are hermetic welded together by low temperature glass solder, and the fire door opening edge sealing stove obtains double glazing；
5th step, loads brazing metal in the bleeding point of double glazing, and sends in vacuum drying oven；To described vacuum sole evacuation, limit heating, being evacuated to below 0.1Pa, be warming up to more than the fusion temperature of brazing metal, brazing metal is fused into liquid, and liquid is deposited in the seal groove of lower glass, the sealing strip of upper glass also floods in a liquid, and liquid is by bleeding point self-sealing；Stop heating, lower the temperature with stove, after brazing metal solidification, bleeding point is realized airtight sealing, open vacuum drying oven, take out vacuum glass；
6th step, puts into fluid sealant in the bleeding point of vacuum glass, Paste Product trade mark or metal decorative sheet on fluid sealant.
Wherein, described convex glass convex surface facing outside, convex surface bow height is not less than 0.1mm, preferably 1 ~ 200mm, more preferably 3 ~ 10mm.
Wherein, the periphery of described upper glass or a periphery at least sealing strip of bleeding point.
Wherein, the periphery of described lower glass or a corresponding position at least seal groove of bleeding point and a sealing strip.
Wherein, the sealing strip of described upper glass is corresponding with the seal groove of described lower glass, and the sealing strip of described upper glass is inserted in the seal groove of described lower glass.
Wherein, described vacuum glass can also include one block of intermediate glass, described intermediate glass is clipped between described upper glass and described lower glass, bleeding point is had on described upper glass and described intermediate glass, described bleeding point utilizes brazing metal self-closed in vacuum drying oven, described upper glass and described lower glass to form two vacuum layer closed respectively with described intermediate glass.
Wherein, described upper glass, described intermediate glass and described lower glass are simple glass or safety glass or semi-tempered glass.
Wherein, described upper glass, described intermediate glass and described lower glass are simple glass or coated glass or Low-E glass.
Wherein, described sealing strip uses printing, printing or mechanically spraying cryogenic glass powder or the mode such as glass ink or metal paste to prepare.
Wherein, described seal groove is formed by machining or Laser Processing, preferably machining mode, such as mechanical lapping, machine cut etc..
Wherein, the inner surface of the seal groove of described lower glass bleeding point corresponding position can be with paint metals slurry, and metal paste contributes to combining closely of brazing metal and glass.
Wherein, described brazing metal includes that low-temperature metal solder and solder, described material are existing commercial commodity.
Further, the fusing point of described brazing metal is less than the fusing point of low temperature glass solder, and during brazing metal fusing, the low temperature glass solder of edge sealing keeps constant.
Further, described brazing metal be shaped as powdery, strip, lamellar or bulk, ring-type, tubulose etc..
Wherein, in the vacuum layer of described convex surface vacuum glass not or have a small amount of supporter, convex surface vacuum glass to rely primarily on convex shape to resist atmospheric pressure.
Wherein, above support is made up of metal, pottery, glass or high molecular polymer, composite, it is preferred to use prepared by printing, sprayed glass ink or polymer.
Wherein, above support has one layer or two-layer；Above support is printed on one block of glass, or is printed on two blocks of glass, and conventional vacuum glass is preferably printed on one block of glass, and toughened vacuum glass is preferably printed on two blocks of glass.
Wherein, above support is column, or is strip；When supporter is printed on one block of glass, the most cylindric；When supporter is printed on two blocks of glass simultaneously, preferably strip, and vertical pile.
Wherein, described edge sealing stove can once heat one to several piece vacuum glass.
Wherein, described edge sealing stove has basic heating system and hot spot system when heating safety glass, basis heating system can use Hot-blast Heating or the mode such as heating wire, electrothermal tube, electric hot plate etc. of resistance heating, hot spot system can with adopt be heated by resistive, the mode such as infrared heating, LASER HEATING, Electromagnetic Heating, microwave heating；
Further, the heating of described basis, it is that burner hearth or glass entirety are heated to a relatively low temperature, such as 300 ~ 350 DEG C, is not result in that safety glass is substantially annealed；
Further, described local is heated, and is that solder or glass periphery are heated to a higher temperature, such as 400 ~ 450 DEG C, prevents the overall substantially annealing of safety glass；
Wherein, described evacuation and bleeding point seal, and can carry out by batch, it is also possible to monolithic is implemented in vacuum drying oven；Overall can heat glass, it is also possible to local heating bleeding point.
Wherein, described vacuum drying oven heats, and can use conventional heating, Infrared Heating, it would however also be possible to employ sensing heating, LASER HEATING, it is also possible to use microwave heating and other suitable heater or heater means.
Further, described heating, glass can be heated overall, it is also possible to local heating bleeding point.
Wherein, the preferred organic fluid sealant of described fluid sealant, more preferably PUR, hot-setting adhesive or double-component fluid sealant.
Beneficial effects of the present invention:
The seal strip groove edge sealing of the present invention, the convex surface vacuum glass of sealing on it periphery of glass and the periphery of bleeding point have sealing strip, there are seal groove and sealing strip in the lower periphery of glass and the corresponding position of bleeding point, the edge sealing and the sealing that make vacuum glass are easier, more reliable, even if sealing strip ensure that vacuum glass sealing effectiveness in the case of glass deformation with the chimeric of seal groove, have more higher bond strength than soldered glass between sealing strip and upper and lower glass, the chimeric of sealing strip and seal groove increases the sealing area between upper and lower glass and airtight layer thickness, the chimeric of sealing strip and seal groove achieves automatic-sealed and the mass sealing of bleeding point；Under normal pressure, under low temperature glass solder edge sealing and vacuum, brazing metal sealing solves the airtight integrity problem of solder, add the tightness of vacuum layer between upper and lower glass, improve the life-span of vacuum glass, drastically increase the productivity ratio of vacuum glass and qualification rate, reduce the production cost of vacuum glass.
Accompanying drawing explanation
Fig. 1 is the convex surface vacuum glass structural representation having supporter of the present invention；
Fig. 2 is the convex surface vacuum glass structural representation of the present invention；
Fig. 3 is the convex surface vacuum glass structural representation of double vacuum layer of the present invention.
In figure: 1. go up glass, 2. descend glass, 3. bleeding point, 4. low temperature glass solder, 5. sealing strip, 6. seal groove, 7. brazing metal, 8. supporter, 9. intermediate glass, 10. fluid sealant, 11. product brands.
Detailed description of the invention
Hereinafter using embodiment and accompanying drawing to describe embodiments of the present invention in detail, to the present invention, how application technology means solve technical problem whereby, and the process that realizes reaching technique effect can fully understand and implement according to this.
Embodiment 1: see Fig. 1, vacuum glass is made up of upper glass 1 and lower glass 2, and the periphery of two blocks of glass is welded together by low temperature glass solder 4, and centre is vacuum layer.Its manufacture method is as follows: the first shapes and sizes according to made vacuum glass cut two pieces of flat glass of required size, it is bleeding point 3 that edge at upper glass 1 bores a through hole, seal groove 6 is offered at the periphery of lower glass 2 and the corresponding position of bleeding point 3, and carry out edging, chamfering and cleaning, be dried, periphery at periphery weld, the periphery of bleeding point 3 and the lower glass capsulation groove of upper glass 1 utilizes mechanical spraying technology to prepare sealing strip 5, and with point gum machine at upper and lower glass preparation supporter 8；Secondly upper and lower two blocks of glass are loaded mould, are placed in bending furnace, it is warming up to temperature 550-750 DEG C of Glass Transition, the gravity relying on glass self makes glass be formed down convex surface, is down to room temperature with stove, and makes supporter 8 be in same level height by plane lapping method；Again by even spread low temperature glass solder 4 in the seal groove 6 of lower glass 2 periphery, and two pieces of glass consistencies from top to bottom are stacked together, send in edge sealing stove, it is warming up to the melt temperature more than 450 DEG C of low temperature glass solder 4, stopping heating, lower the temperature with stove, two blocks of glass are hermetic welded together by low temperature glass solder 4；Last loading metallic zinc solder 7 in bleeding point 3, send in vacuum drying oven, carry out evacuation and heating operation, it is evacuated to below 0.1Pa, is warming up to the melt temperature more than 420 DEG C of metallic zinc solder 7, metallic zinc solder 7 is fused into liquid and is deposited in seal groove 6, the sealing strip 5 of upper glass also floods in a liquid, and liquid is by bleeding point self-sealing；Stopping heating, lower the temperature with stove, metallic zinc solder 7 condenses into solid, bleeding point is realized airtight sealing, opens vacuum drying oven, takes out vacuum glass.Fluid sealant 10 such as butyl rubber is put into while hot in bleeding point, the above covering product brand 11 of fluid sealant 10, trade mark 11 and the upper surface flush of upper glass 1.
Embodiment 2: see Fig. 2, vacuum glass is made up of upper glass 1 and lower glass 2, two blocks of glass are safety glass or semi-tempered glass, one of or low emissivity glass, its manufacture method is as follows: first cut one piece of flat glass of required size and one block of low emissivity glass according to the shapes and sizes of made vacuum glass, selecting low emissivity glass is lower glass 2, it is bleeding point 3 that edge at upper glass 1 bores a through hole, seal groove 6 is offered at the periphery of lower glass 2 and the corresponding position of bleeding point 3, and carry out edging, chamfering and cleaning, it is dried, periphery weld at upper glass 1, on the periphery of bleeding point 3 and lower glass 2, the periphery of seal groove 6 utilizes screen printing technique to print sealing strip；Secondly two blocks of glass are respectively charged in two moulds, this mould has mold and lower mold (i.e. formpiston and former), glass clamp is between mold and lower mold, and can press and make upper and lower mould close, the mould that will be equipped with glass is warming up to temperature 650-700 DEG C of Glass Transition, dependence puts on the pressure on mould makes the glass in mould form convex surface, removes mold immediately and carries out wind-cooling reinforcing, obtaining tempering or semi-tempered glass；Again by even spread low temperature glass solder 4 in the seal groove 6 of lower glass 2 periphery, and two pieces of glass consistencies from top to bottom are stacked together, send in edge sealing stove, edge sealing stove has basic heating system and hot spot system, first with basis heating system such as electric heater for heating, making basal temperature rise to 300 ~ 350 DEG C, low temperature glass solder is heated to melt temperature 430 ~ 450 DEG C by recycling hot spot system such as far infra-red heater, and two blocks of glass are bonded together by melted low temperature glass solder 4；Stopping heating, lower the temperature with stove, two blocks of glass are hermetic welded together by low temperature glass solder 4；Finally carrying out the sealing of bleeding point 3, with embodiment 1, simply brazing metal 7 changes metallic tin into.
Embodiment 3: see Fig. 3, vacuum glass is made up of upper glass 1, intermediate glass 9 and lower glass 2.Its manufacture method is as follows: first cut three pieces of flat glass of required size according to the shapes and sizes of the vacuum glass of required making, upper glass 1 and intermediate glass 9 bore a through hole respectively and forms bleeding point 3, wherein go up the through hole on glass 1 more than the through hole on intermediate glass 9, seal groove 6 is offered at intermediate glass 9 and the upper surface periphery of lower glass 2 and the periphery of bleeding point 3 and corresponding position, and three blocks of glass are carried out edging, chamfering, cleaning, dried；Secondly sealing strip 5 is prepared in the periphery spraying at upper glass 1 and the lower surface periphery of intermediate glass 9, the periphery of bleeding point 3 and corresponding position and seal groove 6, intermediate glass 9 is sent directly in annealing furnace and carries out tempering process, upper and lower two blocks of glass are loaded in mould, it is warming up to the temperature 550 of Glass Transition～750 DEG C, the gravity or the externally applied forces that rely on glass self make glass be formed down convex surface, and carry out tempering process immediately；Again will fill low temperature glass solder 4 in the peripheral sealing groove 6 of intermediate glass 9 and lower glass 2, and described three pieces of glass consistencies from top to bottom are stacked together, it is ensured that the sealing strip 5 on upper glass 1 and intermediate glass 9 lower surface is corresponding with seal groove 6, sends in edge sealing stove；Finally carrying out edge sealing and the sealing of bleeding point 3, with embodiment 2, simply brazing metal 7 changes magnesium alloy into.
All above-mentioned primary these intellectual properties of enforcement, do not set this new product of enforcement and/or the new method limiting other forms.Those skilled in the art's amendment based on foregoing, can realize the implementation status being similar to.But, all modifications or transformation belong to the right of reservation based on new product of the present invention.
The above, be only presently preferred embodiments of the present invention, is not the restriction that the present invention makees other form, and any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified as the Equivalent embodiments of equivalent variations.But every without departing from technical solution of the present invention content, any simple modification, equivalent variations and remodeling above example made according to the technical spirit of the present invention, still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. a seal strip groove edge sealing, the convex surface vacuum glass of sealing, including upper glass and lower glass, it is characterized in that described upper glass and lower glass are convex glasses, bleeding point is had on described upper glass, the periphery of described upper glass and described bleeding point has sealing strip, there are seal groove and sealing strip in the periphery of described lower glass and the corresponding position of described bleeding point, the sealing strip of described upper glass is inserted in the seal groove of described lower glass, weld together in sealing strip that described upper glass and lower glass are entrenched togather by periphery and seal groove and low temperature glass solder edge sealing stove at ambient pressure；Described bleeding point utilizes the sealing strip being entrenched togather and seal groove to realize self-closed and mass in vacuum drying oven after forming liquid seal, cooling solidification after adding heat fusing under vacuo by the brazing metal being placed in bleeding point and seals, and forms a vacuum layer closed between described upper glass and lower glass.
Vacuum glass the most according to claim 1, it is characterized in that described vacuum glass also includes one block of intermediate glass, described intermediate glass is clipped between described upper glass and described lower glass, bleeding point is had on described upper glass and described intermediate glass, described bleeding point utilizes brazing metal self-closed in vacuum drying oven, described upper glass and described lower glass to form two vacuum layer closed respectively with described intermediate glass.
Vacuum glass the most according to claim 1 and 2, it is characterised in that described upper glass, described intermediate glass and described lower glass are simple glass or coated glass.
Vacuum glass the most according to claim 1, it is characterised in that described sealing strip uses the mode of printing or mechanically spraying cryogenic glass powder or glass ink or metal paste to prepare.
Vacuum glass the most according to claim 1, it is characterised in that described seal groove uses machining or Laser Processing to form.
Vacuum glass the most according to claim 1, it is characterised in that described convex glass convex surface facing outside, convex surface bend a height of 3 ~ 10mm.
7. the preparation method of the vacuum glass described in any one of claim 1,4 to 6, it is characterised in that comprise the steps:
The first step, two pieces of flat glass up and down of the shapes and sizes cutting required size of the vacuum glass according to required making, edge at upper glass punches and makes bleeding point, offer seal groove at the periphery weld of lower glass and the corresponding position of bleeding point, and upper and lower two blocks of glass are carried out edging, chamfering, washing and drying treatment；
Second step, periphery at the periphery of upper glass and the periphery of bleeding point and seal groove prepares sealing strip, the sealing strip of upper glass is inserted in the seal groove of correspondence, glass up and down after processing loads hot bending die, is placed in bending furnace or annealing furnace, it is warming up to the temperature 550 of Glass Transition～750 DEG C, the gravity or the externally applied forces that rely on glass self make glass be formed down convex surface, and are down to room temperature with stove, or directly carry out tempering process；
3rd step, by even spread low temperature glass solder in the seal groove of lower glass periphery, upper and lower glass is sent in edge sealing stove after closing sheet；
4th step, carries out heat temperature raising operation to described edge sealing stove, is warming up to more than the melt temperature of low temperature glass solder, reaches edge sealing temperature, and the sealing strip of upper glass is under the action of gravity of glass in embedding sealing groove；Stopping heating, lower the temperature with stove, two blocks of glass are hermetic welded together by low temperature glass solder, and the fire door opening edge sealing stove obtains double glazing；
5th step, loads brazing metal in the bleeding point of double glazing, and sends in vacuum drying oven；To described vacuum sole evacuation, limit heating, being evacuated to below 0.1Pa, be warming up to more than the fusion temperature of brazing metal, brazing metal is fused into liquid, and liquid is deposited in the seal groove of lower glass, the sealing strip of upper glass also floods in a liquid, and liquid is by bleeding point self-sealing；Stop heating, lower the temperature with stove, after brazing metal solidification, bleeding point is realized airtight sealing, open vacuum drying oven, take out vacuum glass；
6th step, puts into fluid sealant in the bleeding point of vacuum glass, Paste Product trade mark or metal decorative sheet on fluid sealant.
The preparation method of vacuum glass the most according to claim 7, it is characterised in that described edge sealing stove once heats one to several piece vacuum glass.
The preparation method of vacuum glass the most according to claim 7, it is characterised in that described edge sealing stove has basic heating system and hot spot system.
The preparation method of vacuum glass the most according to claim 9, it is characterized in that described basis heating system uses one or several of the heating of Hot-blast Heating, resistance, Infrared Heating and Far-infrared Heating, described hot spot system uses one or several of the heating of microwave heating, Electromagnetic Heating, resistance, Infrared Heating and Far-infrared Heating.
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| CN201310298925.4A CN103420594B (en) | 2013-07-17 | 2013-07-17 | Seal strip groove edge sealing, the convex surface vacuum glass and preparation method thereof of sealing |
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| CN201310298925.4A CN103420594B (en) | 2013-07-17 | 2013-07-17 | Seal strip groove edge sealing, the convex surface vacuum glass and preparation method thereof of sealing |
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| CN103420594B true CN103420594B (en) | 2016-08-10 |
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| CN202543043U (en) * | 2012-04-23 | 2012-11-21 | 潍坊亚通玻璃制品有限公司 | Transparent edge-sealed vacuum glass |
| CN102951821A (en) * | 2012-10-06 | 2013-03-06 | 戴长虹 | Glass solder-welded and strip frame-groove-edge-sealed convex vacuum glass and manufacturing method thereof |
| CN102951819A (en) * | 2012-10-06 | 2013-03-06 | 戴长虹 | Metal solder-welded and groove-edge-sealed convex vacuum glass and manufacturing method thereof |
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| CN103420594A (en) | 2013-12-04 |
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Effective date of registration: 20191204 Address after: No. 6047, floor 6, building a, small and micro entrepreneurship and Innovation Industrial Park, No. 288, Yansan Road, Jiuguan Town, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Li Qiannan Address before: 266033 Shandong province Qingdao City, Fushun Road No. 16 Patentee before: Dai Changhong |
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Effective date of registration: 20191230 Address after: 246725 automobile parts Industrial Park, hengbu Town, Zongyang, Tongling, Anhui Patentee after: Anhui Youkun Glass Co.,Ltd. Address before: No. 6047, floor 6, building a, small and micro entrepreneurship and Innovation Industrial Park, No. 288, Yansan Road, Jiuguan Town, Nanxun District, Huzhou City, Zhejiang Province Patentee before: Li Qiannan |
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Denomination of invention: Convex vacuum glass for sealing edges and sealing grooves and its preparation method Effective date of registration: 20230314 Granted publication date: 20160810 Pledgee: Tongling Rural Commercial Bank Co.,Ltd. Tongdu Sub branch Pledgor: Anhui Youkun Glass Co.,Ltd. Registration number: Y2023980034828 |