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WO2025173050A1 - Dispositif de séparation de résines photosensibles - Google Patents

Dispositif de séparation de résines photosensibles

Info

Publication number
WO2025173050A1
WO2025173050A1 PCT/IT2025/050032 IT2025050032W WO2025173050A1 WO 2025173050 A1 WO2025173050 A1 WO 2025173050A1 IT 2025050032 W IT2025050032 W IT 2025050032W WO 2025173050 A1 WO2025173050 A1 WO 2025173050A1
Authority
WO
WIPO (PCT)
Prior art keywords
cannula
liquid
ultraviolet radiation
light source
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/IT2025/050032
Other languages
English (en)
Inventor
Oscar MESCHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Upwardip Srl
Original Assignee
Upwardip Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Upwardip Srl filed Critical Upwardip Srl
Publication of WO2025173050A1 publication Critical patent/WO2025173050A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J19/12—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electromagnetic waves
    • B01J19/122—Incoherent waves
    • B01J19/123—Ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C02F1/325—Irradiation devices or lamp constructions
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/30—Imagewise removal using liquid means
    • G03F7/3092—Recovery of material; Waste processing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/46—Polymerisation initiated by wave energy or particle radiation
    • C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light

Definitions

  • the present patent intends to overcome the above critical issues by implementing a device for separating photosensitive resins which is preferably but not necessarily usable in three- dimensional printing processes.
  • Further objects of the present invention are to provide a transfer apparatus which allows the safe transfer of the liquid after precipitation as well as to provide a method for separating the resin which makes use of such a device.
  • a first aspect of the invention is based on the idea of providing a device for separating photosensitive resin suspended in a liquid, the device comprising:
  • a hollow cannula cylindrical in shape and having an external and internal surface, the cannula being made of material adapted to diffuse ultraviolet radiation and at least partially transparent to ultraviolet radiation, as a light guide ;
  • a light source adapted to emit ultraviolet radiation; wherein the light source is arranged so that the ultraviolet radiation emitted by it is irradiated into the cannula and di f fused by it both internally and externally .
  • the light source comprises at least one light emitting diode adapted to emit ultraviolet radiation .
  • the light source is adapted to emit germicidal ultraviolet radiation having a wavelength between 200 nanometres and 480 nanometres , preferably between about 255 nanometres and about 275 nanometres .
  • the device further comprises an electronic control unit configured to control the activation or deactivation of the light source and/or the radiant power and/or the wavelength of the radiation emitted therefrom .
  • a second aspect of the proposed invention is based on the idea of providing a trans fer apparatus comprising :
  • a discharge portion arranged connected to a second end of the cannula, opposite the first end of the cannula, and adapted to allow the passage of liquid from the inside of the cannula to the outside .
  • an opening portion in which there is at least one opening adapted to allow the passage of liquid from the outside to the inside of the cannula, and arranged between the tube portion and the umbrella portion .
  • the light source is arranged on said discharge portion, i . e . , is made integrally therewith .
  • the tube portion of the suction mouth is screwed or clamped onto the cannula and/or the discharge portion is screwed or clamped onto the cannula .
  • the proposed trans fer apparatus can advantageously further comprise a pump, preferably a bellows pump, adapted to generate a vacuum at the discharge portion to suck liquid from the suction mouth to inside the cannula .
  • a pump preferably a bellows pump
  • a third aspect of the invention is based on the idea of providing a method for separating photosensitive resin suspended in a liquid comprising the following steps : a ) providing a liquid containing photosensitive resin suspended in the liquid inside a container ; b ) arranging the device according to the first aspect of the invention inside said container ; c ) activating the light source of the device so that the ultraviolet radiation emitted by it is irradiated on and inside the cannula and from there di f fuses inside the container ; d) extracting the clari fied liquid .
  • FIG. 1 is an exploded view of a side section of an apparatus according to an embodiment of the second aspect of the invention
  • - Figure 2 is a lateral sectional view of the apparatus of Figure 1 .
  • the device for separating photosensitive resin suspended in a liquid is generally indicated with the reference number 10 .
  • Said device 10 is used to promote the precipitation of photosensitive resin suspended in a liquid when the liquid is contained inside a container .
  • the cannula 12 is made of a material at least partially transparent to ultraviolet radiation .
  • the material used is adapted to di f fuse the ultraviolet radiation both inwards and outwards of the cannula 12 .
  • the cannula 12 is made as a light guiding element .
  • the wall thickness of the cannula 12 can for example be about 3 or 4 mm .
  • the cannula 12 can for example be made of opal polycarbonate , i . e . , transparent , i . e . , polymethylmethacrylate .
  • the light source 14 is adapted to be electrically powered by a battery or by a wired electrical connection to emit ultraviolet radiation in the direction of said cannula 12 .
  • the light source 14 is arranged so that said ultraviolet radiation is irradiated in or on the cannula 12 .
  • the light source 14 can for example comprise at least one light emitting diode .
  • the emitted ultraviolet radiation can preferably be germicidal ultraviolet radiation, therefore having a wavelength between about 200 and about 480 nanometres , more preferably between about 255 and about 275 nanometres .
  • the emitted ultraviolet radiation can preferably be ultraviolet radiation speci fically selected to promote the polymeri zation of a speci fic resin or a speci fic type of resins .
  • the ultraviolet radiation emitted by the light source 14 is emitted towards or onto the cannula 12 and di f fuses radially with respect to the axial direction of the cannula 12 inside the container .
  • the device 10 can also comprise an integrated or dedicated electronic control unit .
  • the second aspect of the invention relates to a trans fer apparatus 100 comprising the device 10 according to the first aspect of the invention .
  • the trans fer apparatus 100 further comprises a suction mouth 102 and a discharge portion 104 .
  • the suction mouth 102 is adapted to allow or promote the passage of liquid from the outside , i . e . , from the container, towards the inside of the cannula 12 , and is therefore made as a hollow body .
  • the suction mouth 102 is connected to the first end 12a of the cannula 12 .
  • the suction mouth 102 comprises a tube portion 106 , an umbrel la portion 108 and an opening portion 110 .
  • the tube portion 106 is made so as to ensure the fluid connection with the cannula 12 , i . e . , to allow fluid to pass from inside the suction mouth 102 to inside the cannula 12 .
  • the tube portion 106 is made so that it can be screwed, internally or externally, or clamped, on the cannula 12 at the first end 12a .
  • the umbrella portion 108 extends radially with respect to the tube portion 106 and is preferably made of flexible material , for example rubber, so as to be able to enter a narrower neck opening of the container with respect to the umbrella portion 108 .
  • the umbrella portion 108 serves to shield the inlet of the cannula 12 or to prevent the suction of the cannula 12 from occurring directly on the bottom wall of the container, where the photosensitive resin is expected to have precipitated, and therefore to prevent the precipitated material from being sucked instead of the liquid present in the container .
  • the umbrella portion 108 is connected to the tube portion 106 by an opening portion 110 .
  • the opening portion 110 there is at least one opening 112 , in the radial direction, adapted to allow the passage of the liquid contained in the container towards the inside of the cannula 12 , by means of the fluid connection ensured by the tube portion 106 .
  • the discharge portion 104 is made so as to ensure the fluid connection with the cannula 12 , i . e . , so as to allow the liquid to pass from the inside of the cannula 12 to the outside , to end the trans fer process .
  • it is arranged connected to the second end 12b of the cannula 12 , therefore opposite the suction mouth 102 .
  • the discharge portion 104 is made so that it can be screwed, internally or externally, or clamped, on the cannula 12 at the second end 12b .
  • the light source 14 is arranged on said discharge portion 104 , for example being integrally mounted thereon or being integrally made therewith . In the embodiment shown in the figures , the light source 14 is mounted inside a cavity of the discharge portion 104 facing the cannula 12 .
  • the trans fer apparatus 100 can further comprise , for generating the vacuum necessary for suction at the discharge of the liquid to be trans ferred, a pump (not shown, known per se ) , such as a bellows pump .
  • the device 10 can be used in a method for separating photosensitive resin suspended in a liquid comprising the steps of : a ) providing a liquid containing photosensitive resin suspended in the liquid inside a container ; b ) arranging the device 10 according to the first aspect of the invention inside said container; c ) activating the light source 14 of the device 10 so that the ultraviolet radiation emitted by it is irradiated on and inside the cannula 12 and from there di f fuses inside the container d) extracting the clari fied liquid .
  • the method can be used within a trans fer procedure in which it is first intended to promote the precipitation on the bottom of the container of the photosensitive resin initially suspended in the liquid and then trans fer the puri fied liquid without sucking any part of the material deposited on the bottom .
  • a device according to the present invention provides several advantages .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

Dispositif (10) de séparation de résine photosensible en suspension dans un liquide comprenant : une canule creuse (12), de forme cylindrique et présentant une surface externe (16) et une surface interne (18), la canule (12) étant en matériau adapté pour diffuser un rayonnement ultraviolet et au moins partiellement transparente au rayonnement ultraviolet ; et une source de lumière (14) adaptée pour émettre un rayonnement ultraviolet ; la source de lumière (14) étant conçue pour que le rayonnement ultraviolet émis par celle-ci soit irradié dans la canule (12) et diffusé par celle-ci à la fois à l'intérieur de la canule (12) et à l'extérieur de celle-ci.
PCT/IT2025/050032 2024-02-14 2025-02-13 Dispositif de séparation de résines photosensibles Pending WO2025173050A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102024000003166 2024-02-14
IT202400003166 2024-02-14

Publications (1)

Publication Number Publication Date
WO2025173050A1 true WO2025173050A1 (fr) 2025-08-21

Family

ID=91022717

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2025/050032 Pending WO2025173050A1 (fr) 2024-02-14 2025-02-13 Dispositif de séparation de résines photosensibles

Country Status (1)

Country Link
WO (1) WO2025173050A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153107A (en) * 1997-08-14 2000-11-28 Asahi Kasei Kogyo Kabushiki Kaisha Process for treating development waste liquor
US20090294688A1 (en) * 2005-09-20 2009-12-03 Logistic Solutions Limited Ultraviolet Radiation Treatment System
US20150314024A1 (en) * 2013-01-24 2015-11-05 Atlantium Technologies Ltd Method and apparatus for liquid disinfection by light emitted from light emitting diodes
CN207310528U (zh) * 2017-10-31 2018-05-04 广州形优科技有限公司 光敏树脂废料处理装置及光敏树脂成型系统
CN219009979U (zh) * 2022-12-09 2023-05-12 苏州立琻半导体有限公司 一种紫外消杀模块及紫外水处理装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6153107A (en) * 1997-08-14 2000-11-28 Asahi Kasei Kogyo Kabushiki Kaisha Process for treating development waste liquor
US20090294688A1 (en) * 2005-09-20 2009-12-03 Logistic Solutions Limited Ultraviolet Radiation Treatment System
US20150314024A1 (en) * 2013-01-24 2015-11-05 Atlantium Technologies Ltd Method and apparatus for liquid disinfection by light emitted from light emitting diodes
CN207310528U (zh) * 2017-10-31 2018-05-04 广州形优科技有限公司 光敏树脂废料处理装置及光敏树脂成型系统
CN219009979U (zh) * 2022-12-09 2023-05-12 苏州立琻半导体有限公司 一种紫外消杀模块及紫外水处理装置

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