WO2020225739A1 - Couvercle pour coupelle, en particulier couvercle pouvant être monté sur un pistolet de pulvérisation de peinture - Google Patents

Couvercle pour coupelle, en particulier couvercle pouvant être monté sur un pistolet de pulvérisation de peinture Download PDF

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Publication number
WO2020225739A1
WO2020225739A1 PCT/IB2020/054274 IB2020054274W WO2020225739A1 WO 2020225739 A1 WO2020225739 A1 WO 2020225739A1 IB 2020054274 W IB2020054274 W IB 2020054274W WO 2020225739 A1 WO2020225739 A1 WO 2020225739A1
Authority
WO
WIPO (PCT)
Prior art keywords
peripheral wall
lid
cup
local
peripheral
Prior art date
Application number
PCT/IB2020/054274
Other languages
English (en)
Inventor
Piet GREEVE
Carlo CERVETTI
Original Assignee
Chemicar Europe Nv
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
Priority claimed from BE20195295A external-priority patent/BE1027259B1/nl
Application filed by Chemicar Europe Nv filed Critical Chemicar Europe Nv
Priority to EP20726243.7A priority Critical patent/EP3965945A1/fr
Publication of WO2020225739A1 publication Critical patent/WO2020225739A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2478—Gun with a container which, in normal use, is located above the gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus

Definitions

  • Lid for a cup especially a lid mountable on a spray gun for paint
  • the present invention relates to an assembly of a lid and a cup for a liquid, particularly a paint mixture.
  • the invention relates particularly to a lid for use in such an assembly.
  • the lid is configured for removable coupling to the cup.
  • the lid or the cup is provided with a passage for the liquid, wherein the passage is preferably configured to be coupled to a spray gun for spraying the liquid.
  • Such an assembly of a lid and a cup is known.
  • Such an assembly can be mounted on a paint spray gun, wherein the lid is coupled to an inlet of the paint spray gun such that paint can flow from the cup to the paint spray gun.
  • a valve in the cup or in the lid such that air can be supplied in the case of a possible underpressure in the cup.
  • These valves are preferably configured such that the assembly of cup and lid is on the one hand liquid-tight and on the other allows a good supply of air in the case of an underpressure in the cup.
  • Such embodiments have the drawback that specially modified valves and a modification of the cup or the lid are necessary in order to realize the liquid-tightness on the one hand and a good supply of air on the other.
  • Embodiments of the invention have the object of providing an assembly of a lid and cup whereby a good air supply can be obtained in simpler manner, and particularly without additional components such as valves being necessary.
  • an assembly of a lid and a cup wherein the lid is configured for removable coupling to the cup.
  • the lid is preferably provided with a passage for the liquid.
  • the cup can be provided with a passage for the liquid.
  • the passage is preferably configured to be coupled to a spray gun for spraying the liquid.
  • the lid is provided with a peripheral wall which is configured to be in contact with a peripheral wall part of the cup.
  • the peripheral wall of the lid and/or the peripheral wall part of the cup is configured to form a number of local air passages between the peripheral wall of the lid and the peripheral wall part of the cup.
  • each local air passage preferably extends through an angle of less than 25°, more preferably less than 20°, still more preferably less than 15°, and most preferably less than 10°, as seen along a peripheral direction of the peripheral wall. Since the air passages extend over only a limited part of the periphery, the lid can still be mounted firmly on the cup and the air passages will not influence the strength of the connection between the lid and the cup, or will do so only to limited extent.
  • Each local passage preferably has a maximum peripheral dimension measured along a peripheral direction of the peripheral wall, wherein the maximum peripheral dimension is smaller than 8 mm, preferably smaller than 7 mm, more preferably smaller than 6 mm, most preferably smaller than 5 mm. In the case of a round peripheral wall the peripheral dimension is thus measured along a circle.
  • Each local passage preferably has a maximum dimension measured in a radial direction, wherein the maximum dimension is smaller than 2 mm, more preferably smaller than 1.5 mm, still more preferably smaller than 1 mm. In the case of a local deepened portion (see below) this maximum dimension can correspond to the maximum depth of the local deepened portion, and in the case of a local thickened portion to the maximum thickness of the local thickened portion.
  • the peripheral wall of the lid is preferably provided in a surface which is in contact with the peripheral wall part of the cup with a number of local deepened portions for the purpose of forming the number of local air passages.
  • the number of local deepened portions is preferably distributed uniformly over the peripheral wall.
  • the number of local deepened portions is preferably greater than two, more preferably greater than three, still more preferably greater than four and most preferably greater than five.
  • the number of local deepened portions can for instance lie between six and twelve.
  • the peripheral wall of the lid has an inner surface and an outer surface.
  • the peripheral wall is configured to extend at least partially into the cup, such that the outer surface of the peripheral wall is in contact with an inner surface of the peripheral wall part of the cup.
  • the number of local deepened portions is then preferably provided in the outer surface of the peripheral wall of the lid.
  • the inner surface comprises one or more in-mould labels or a film, preferably manufactured from a polypropylene material. More generally, the one or more in-mould labels or the film can be manufactured from any suitable material which is compatible with the material of the lid.
  • the inner peripheral wall can comprise on the outer side a plurality of wall parts which are mutually connected by one or more in-mould labels, such that an in-mould label can fulfil a membrane function at the position of the empty space between two adjacent wall parts.
  • the lid is provided on the inner side with a film which is attached against the peripheral wall part.
  • This film can optionally extend between two adjacent wall parts of the peripheral wall part so as to fulfil a membrane function at the position of the empty space between two adjacent wall parts.
  • the film is preferably provided with tear lines such that at least an inner portion of the film is removable, while a part between two adjacent wall parts is preserved.
  • the film can optionally be provided with a tongue which can be manipulated by a user for the purpose of removing at least an inner portion of the film.
  • the lid can optionally be provided with a filter which is attached to the underside of the lid and surrounds the passage of the lid.
  • the filter can be attached between the passage and the film.
  • the lid can for this purpose be provided with a stepped peripheral part with a first annular attaching part for attachment of the film and with a second annular attaching part for attachment of the filter.
  • the peripheral wall of the lid and/or the peripheral wall part of the cup is provided with one or more sealing edges extending in a peripheral direction of the peripheral wall.
  • the number of local air passages preferably formed by local deepened portions, can then extend at least in the one or more sealing edges.
  • the number of local air passages can thus extend for instance only in the one or more sealing edges, without material also being removed in the rest of the peripheral wall part.
  • the peripheral wall of the lid and/or the peripheral wall part of the cup can be provided with screw thread and the number of local air passages can extend at least in the screw thread. In a possible embodiment the number of local air passages extends only in the screw thread and/or in the one or more sealing edges.
  • the lid is provided with a U-shaped peripheral channel which is open on an underside of the lid for the purpose of receiving therein a peripheral edge of the cup.
  • the cup can for instance have a U-shaped peripheral edge which is closed on an upper edge of the cup and which fits in the U-shaped peripheral channel of the lid.
  • the above stated peripheral wall of the lid then typically forms a wall of the U-shaped peripheral channel of the lid.
  • Said peripheral wall of the lid preferably forms an inner wall of the U-shaped peripheral channel of the lid, which inner wall is intended to extend into the cup.
  • the outer wall of the U-shaped peripheral channel can then extend on the outer side of the cup so as to make contact with its outer surface with the peripheral wall part of the cup.
  • the local deepened portions are provided only in the inner wall and not in the outer wall, and preferably not in an intermediate wall connecting the inner wall to the outer wall either. This is particularly possible when the outer wall and the intermediate wall do not connect airtightly to the cup.
  • the lid has an underside and an upper side, wherein the peripheral wall extends downward from an underside of the lid.
  • Each local deepened portion has a height measured perpendicularly of the underside of the lid and a peripheral dimension measured along a peripheral direction of the peripheral wall.
  • the height of a local deepened portion can extend over the whole height of the peripheral wall or over a part thereof, on the condition that the local deepened portion allow a local air passage to the cup to be created.
  • the peripheral dimension decreases as the distance to the underside of the lid increases. In this way the air passage will become narrower in the direction toward the cup. In this way a good liquid density can be realized in combination with a good air supply.
  • each local deepened portion has a maximum peripheral dimension, measured along a peripheral direction of the peripheral wall, which is smaller than 8 mm, preferably smaller than 5 mm.
  • the minimum peripheral dimension of the local deepened portion is preferably smaller than 5 mm, more preferably smaller than 4 mm.
  • each local deepened portion has a maximum depth, measured in radial direction, which is greater than 0.05 mm and is smaller than 1.5 mm.
  • the minimum wall thickness of the peripheral wall of the lid at the position of the number of air passages, measured in the radial direction preferably lies between 0.03 mm and 0.5 mm, for instance between 0.1 mm and 0.5 mm. In this way the wall is also still sufficiently thick at the position of the number of air passages to give the lid the necessary strength for realizing a good closure.
  • the peripheral wall of the lid has an inner surface and an outer surface, wherein the outer surface of the peripheral wall is intended for the purpose of making contact with an inner surface of the peripheral wall part of the cup when the lid is placed on the cup.
  • a number of local recesses can be arranged in the inner surface of the peripheral wall, such that the inner wall can function as a movable membrane at the position of the local recesses for the purpose of forming an air passage on the outer surface of the peripheral wall opposite each local recess.
  • the local recesses can optionally be combined with local deepened portions, wherein the number of local recesses is then preferably arranged opposite the number of local deepened portions.
  • the air passage is thus not formed in the local recess, but is formed on the outer surface of the peripheral wall in which local deepened portions are optionally arranged.
  • each local recess preferably has a maximum peripheral dimension, measured along a peripheral direction of the peripheral wall, which is smaller than 10 mm, preferably smaller than 8 mm.
  • the peripheral wall extends at least partially into the cup, and wherein the liquid seal between the cup and the lid is realized between an outer surface of the peripheral wall of the lid and an inner surface of the peripheral wall part of the cup. It is however also possible to realize a liquid seal between an inner surface of a peripheral wall of the lid and an outer surface of a peripheral wall part of the cup.
  • the number of local deepened portions will be arranged in the inner surface of the peripheral wall of the lid, and local recesses can optionally be provided in the outer surface of the peripheral wall of the lid.
  • the peripheral wall is provided with a number of flexible sealing tongues at the position of the number of air passages, wherein the flexible sealing tongues are configured to close or leave clear the air passage in accordance with the pressure in the cup.
  • Such flexible sealing tongues can for instance extend into the cup in line with the peripheral wall, and in a closed state of the air passage can lie against the peripheral wall part of the cup.
  • these flexible sealing tongues are bent to some extent by the pressure difference for the purpose of leaving clear the number of local air passages.
  • these flexible sealing tongues At the position where the local deepened portion debouches into the cup these flexible sealing tongues preferably have a peripheral dimension greater than the peripheral dimension of the corresponding local deepened portion. In this way a good seal of the air passage can be obtained.
  • the peripheral wall of the lid is provided in a surface which is in contact with the peripheral wall part of the cup with a number of local thickened portions for the purpose of forming the number of local air passages around the number of local thickened portions.
  • the number of local thickened portions can be limited, wherein the local thickened portions then extend between a top of a local thickened portion and a location where the peripheral wall makes contact with the peripheral wall part.
  • a very large number of local thickened portions can be arranged, for instance at least twenty, or even more than thirty local thickened portions, which are distributed over said surface of the peripheral wall, such that a network of local air passages is formed between the local thickened portions. The air passages can then extend between two tops of mutually adjacent local thickened portions.
  • Each local thickened portion preferably has a thickness, measured in radial direction, which is smaller than 0.7 mm, more preferably smaller than 0.5 mm, still more preferably smaller than 0.2 mm.
  • Each local thickened portion preferably has a peripheral dimension, measured in a peripheral direction of the peripheral wall, which is smaller than 1.5 mm, more preferably smaller than 1.2 mm, still more preferably smaller than 1.0 mm.
  • the U-shaped peripheral channel has an inner wall and an outer wall, and the number of local thickened portions are arranged on the inner wall and/or on the outer wall.
  • an assembly of a lid and a cup for a liquid wherein the lid is configured for removable coupling to the cup.
  • the lid is preferably provided with a passage for the liquid, wherein the passage is preferably configured to be coupled to a spray gun for spraying the liquid.
  • the lid is provided with a peripheral wall which is configured to be in contact with a peripheral wall part of the cup, wherein the peripheral wall of the lid and/or the peripheral wall part of the cup is provided with an air-permeable layer for the purpose of forming an air passage between the peripheral wall of the lid and the peripheral wall part of the cup.
  • the air-permeable layer is preferably formed integrally with the peripheral wall of the lid and/or with the peripheral wall part of the cup.
  • the air-permeable layer can for instance be provided as an insert or a label (for instance a so-called in-mould label IML) in a mould for forming the lid and/or the cup.
  • the air-permeable layer preferably comprises a foam material, such as a polypropylene foam material.
  • the lid is provided with a U-shaped peripheral channel which is open on an underside of the lid for the purpose of receiving therein a peripheral edge of the cup.
  • the cup can for instance have a U-shaped peripheral edge which fits in the U-shaped peripheral channel of the lid.
  • the above stated peripheral wall of the lid then typically forms a wall of the U- shaped peripheral channel of the lid.
  • Said peripheral wall of the lid preferably forms an inner wall of the U-shaped peripheral channel of the lid, which inner wall is intended to extend in the cup.
  • the outer wall of the U-shaped peripheral channel can then extend on the outer side of the cup.
  • the air-permeable layer is provided only on the inner wall and not on the outer wall.
  • the U-shaped channel is provided on the inner and outer wall and on an intermediate wall which connects the inner wall to the outer wall with an air- permeable layer, or only the outer wall is provided with an air-permeable layer. This can depend, among other factors, on the embodiment of the lid and on the location of the liquid seal, i.e. the location where the lid makes liquid-tight contact with the cup.
  • the invention further relates to a lid, preferably a lid for use in an assembly according to any one of the above described embodiments.
  • the lid is configured for removable coupling to the cup.
  • the lid is preferably provided with a passage for the liquid, wherein the passage is configured to be coupled to a spray gun for spraying the liquid.
  • the lid is provided with a peripheral wall which is configured to be in contact with a peripheral wall part of the cup, wherein the peripheral wall of the lid is configured to form a number of air passages between the peripheral wall of the lid and the peripheral wall part of the cup.
  • Each local air passage preferably extends through an angle of less than 25°, preferably less than 20°, still more preferably less than 15°, as seen along a peripheral direction of the peripheral wall.
  • Above described advantageous features of the lid of the assembly can likewise be provided in the lid according to the invention.
  • the invention relates to a cup, preferably a cup for use in an assembly according to any one of the above described embodiments.
  • the cup is configured for removable coupling to a lid.
  • the cup is provided with a peripheral wall part which is configured to be in contact with a peripheral wall of the lid.
  • the peripheral wall part of the cup is configured to form a number of air passages between the peripheral wall part of the cup and the peripheral wall of the lid.
  • Each local air passage preferably extends through an angle of less than 25°, preferably less than 20°, still more preferably less than 15°, as seen along a peripheral direction of the peripheral wall part.
  • the peripheral wall part of the cup is provided with one or more sealing edges and/or with a screw thread.
  • the number of local air passages can then extend in the one or more sealing edges and/or in the screw thread.
  • local deepened portions can be formed in the peripheral wall part of the cup by locally removing the material of the one or more sealing edges and/or the material of the screw thread.
  • the peripheral wall part of the cup is provided with one or more local thickened portions which can have similar properties as the local thickened portions on the lid, which were described above.
  • Figure 1 illustrates a schematic perspective view of an embodiment of an assembly of a cup and lid mounted on a paint spray gun
  • Figures 2A-2F illustrate respectively a perspective view, a perspective detail view of part IIB of figure 2A, a cross-section along IIC-IIC in figure 2E, a detail IID of the cross-section of figure 2C, a bottom view and a detail IIF of the bottom view of figure 2E of an embodiment of a lid;
  • Figure 3A illustrates schematically an embodiment of a cup
  • Figure 3B illustrates a detail of the peripheral wall part of the cup of figure 3A
  • Figures 4A-4G illustrate respectively a perspective view, a perspective detail view of a part IVB of figure 4A, a cross-sectional along IVC-IVC in figure 4E, a detail IVD of the cross-section of figure 4C, a bottom view, a detail IVF of the bottom view of figure 4E, and a detail IVG of figure 4A of an embodiment of a lid;
  • Figure 5A illustrates a perspective view of yet another embodiment of a lid
  • Figure 5B shows a perspective detail view of the lid of figure 5A
  • Figures 6A-6C illustrate respectively a perspective view, a cross-section and a detail view of the cross-section of yet another embodiment of a lid
  • Figures 7A-7D illustrate respectively a perspective view, a section in radial direction through a local thickened portion, a detail view when looking at an edge of the underside of the lid, and a perspective detail view of part VIID in figure 7 A of an embodiment of a lid;
  • Figure 7E illustrates a schematic view of the air passages for the variant of figures 7A-7D;
  • Figures 8A-8D illustrate respectively a perspective view, a section in radial direction through a plurality of local thickened portions, a detail view when looking at an edge of the underside of the lid, and a perspective detail view of part VIIID in figure 7A of an embodiment of a lid;
  • Figure 8E illustrates a schematic view of the air passages for the variant of figures 8A-8D; and Figures 9A-9D illustrate respectively a perspective view, a detail view of IXB in figure 9A, a detail view of IXC in figure 9A, and a cross-section of an embodiment of a lid; and
  • Figures 10A-10C illustrate respectively a cross-section, a first perspective view and a second perspective detail view of a portion of a lid according to yet another embodiment.
  • FIG 1 illustrates an assembly of a lid 100 and a cup 200 which is mounted on a paint spray gun 300.
  • cup 200 is filled with liquid, typically a viscous liquid such as paint, after which lid 100 is arranged on cup 200.
  • the connection between lid 100 and cup 200 is preferably liquid-tight or substantially liquid-tight.
  • the assembly of cup 200 and lid 100 is arranged upside down on paint spray gun 300.
  • Lid 100 is provided with a passage 110 through which liquid can flow from cup 200 to a channel of paint spray gun 300.
  • the upper side 102 of lid 100 can for this purpose be configured to be coupled to paint spray gun 300.
  • Such assemblies of a cup 200 with a lid 100 are known.
  • Embodiments of the present invention have for their object an assembly in which such a separate valve for guaranteeing a suitable air supply to the cup is not necessary.
  • Lid 100 has an upper side 102 and an underside 101.
  • the lid is provided with a passage 110.
  • the lid can be provided with a spherical or conical portion 105 in order to facilitate the liquid supply from the cup to passage 110.
  • Lid 100 is provided with a U- shaped peripheral channel 140 which is open on the underside 101 of lid 100 for the purpose of receiving therein a peripheral edge 240 of cup 200 (see figures 3 A and 3B).
  • Peripheral edge 240 of the cup can likewise be embodied as a U-shaped peripheral edge with a closed upper end which fits in the U-shaped peripheral channel 140 of lid 100.
  • the U-shaped peripheral channel 140 is bounded by an inner peripheral wall 120, an outer peripheral wall 150 and an intermediate wall 160 which connects the outer peripheral wall 150 to the inner peripheral wall 120.
  • Intermediate wall 160 can extend in line with the upper side 102 of lid 100.
  • the inner and outer peripheral walls 120, 150 are provided on the underside 101 of lid 100.
  • the inner peripheral wall 120 is intended to extend at least partially into the cup 200, while the outer peripheral wall 150 is intended to extend on the outer side of cup 200.
  • the inner peripheral wall 120 is provided on its outer surface 121 with two sealing edges 123, 124.
  • the outer surface 121 of inner peripheral wall 120 is provided with a number of local deepened portions 131 so as to form a number of local air passages 130.
  • local deepened portions 131 are arranged in the outer surface 121 of inner peripheral wall 120. Local deepened portions 131 are preferably distributed uniformly along the periphery. Each local deepened portion 131 extends through an angle a of less than 10°.
  • each local deepened portion 131 extends through the sealing edges 123, 124 and into the remaining material of inner peripheral wall 120.
  • the local deepened portion 131 has a height h (see figure 2D), measured perpendicularly of the underside 101 of lid 100, i.e. perpendicularly of a flat portion of lid 100.
  • Local thickened portion 131 has a peripheral dimension 01, 02, see figure 3B, measured along a peripheral direction of the peripheral wall, wherein the peripheral dimension preferably decreases as the distance to underside 101 increases. In other words, the peripheral dimension 01, 02 decreases in the direction in which air flows into the cup.
  • the peripheral dimension 02 is thus preferably smallest at the position where local deepened portion 131 debouches into cup 200.
  • Each local deepened portion preferably has a maximum peripheral dimension w, measured along a peripheral direction of peripheral wall 120, see figure 2F, which is smaller than 8 mm, preferably smaller than 5 mm.
  • the maximum depth d of the local deepened portion 131, measured in radial direction, see figure 2D, is preferably greater than 0.15 mm and smaller than 1.5 mm.
  • the wall thickness t of peripheral wall 120 at the position of an air passage 130, measured in radial direction, see figure 2D preferably lies between 0.1 mm and 0.5 mm.
  • a plurality of local air passages 130 are thus formed in the peripheral wall 120 of the lid.
  • the local air passages 130 are created by providing local deepened portions 131. It is noted here that the intermediate wall 160 and the outer wall 140 do not co-act airtightly with cup 200, such that it suffices to provide local deepened portions 131 only in the inner peripheral wall 120. When an underpressure is created in the cup as a result of the amount of liquid in the cup decreasing, air can thus be supplied from outside through the local air passages 130.
  • FIGS 4A-4G illustrate a second embodiment of a lid according to the invention.
  • the upper side 102 of lid 100 is substantially identical to the upper side 102 of the lid of figures 2A-2F, and as a result will not be described in detail again.
  • the underside 101 of lid 100 is provided with a U-shaped peripheral channel 140 which is bounded by an inner peripheral wall 120, an outer peripheral wall 150 and an intermediate wall 160.
  • the outer surface of the inner peripheral wall is provided with a plurality of local deepened portions 131, here six local deepened portions 131.
  • the local deepened portions 131 are formed by locally interrupting the sealing edges 123, 124 which are provided on outer surface 121.
  • the inner surface 122 of inner peripheral wall 120 is provided with a plurality of local recesses 132, here six local recesses 132, which are arranged opposite the local deepened portions 131.
  • each local deepened portion 131 extends through an angle a of less than 10°, and each local recess 132 extends through an angle a’ of less than 20°.
  • the local deepened portions 131 are thus formed only by the interruption of sealing edges 123, 124, without additional material being removed in outer surface 121.
  • the peripheral wall 120 is however very thin at the position of local deepened portions 131 and local recesses 132, such that inner wall 120 can there function as a movable membrane for making the air passage 130 bigger or smaller in accordance with the pressure difference between the interior of the cup and the area surrounding the cup.
  • the thickness t of the peripheral wall 120 at the position of local deepened portions 131 and recesses 132 is preferably smaller than 0.5 mm, still more preferably smaller than 0.3 mm.
  • the peripheral dimension w of the local deepened portion 131 is preferably smaller than 5 mm, still more preferably smaller than 3 mm, and preferably greater than 0.05 mm (see figure 4F).
  • the peripheral dimension w’ of a local recess 132 is preferably smaller than 10 mm, more preferably smaller than 8 mm, and is preferably greater than 2 mm.
  • the maximum depth d’ of a local recess 132, measured in radial direction, see figure 4D, is preferably greater than 0.15 mm and smaller than 2.5 mm.
  • FIGS 5A and 5B illustrate yet another embodiment of a lid according to the invention.
  • This variant is similar to the variant of figures 4A-4G, with the difference that no local recesses 132 are provided and that the peripheral dimensions of the local deepened portions 131 are greater.
  • a number of flexible sealing tongues 133 are further provided at the position of the number of local deepened portions 131, wherein the number of flexible sealing tongues 133 is configured to close or leave clear the number of air passages 130 in accordance with the pressure in the cup.
  • the flexible sealing tongues 133 extend in line with the peripheral wall 120, such that they protrude downward into the cup and lie against an inner surface of cup 200 when the pressure is the same inside and outside the cup.
  • sealing tongues 133 can bend inward to some extent, away from the inner surface of cup 200, in order to clear air passages 130.
  • the peripheral dimension w” of a flexible sealing tongue 133 is preferably greater than the peripheral dimension w of a local deepened portion 131.
  • FIGS 6A-6C illustrate yet another embodiment of a lid 100’ according to the invention.
  • the lid 100’ is provided on its underside 101 with a U-shaped peripheral channel 140 which is bounded by an inner peripheral wall 120, an outer peripheral wall 150 and an intermediate wall 160 which connects the inner peripheral wall 120 to the outer peripheral wall 150.
  • a U-shaped peripheral channel 140 which is bounded by an inner peripheral wall 120, an outer peripheral wall 150 and an intermediate wall 160 which connects the inner peripheral wall 120 to the outer peripheral wall 150.
  • an air-permeable layer 170 Provided in the U-shaped peripheral channel 140 is an air-permeable layer 170.
  • the air- permeable layer 170 extends over the whole inner surface of the U-shaped channel 140, although the skilled person will appreciate that the air-permeable layer can also extend only on the outer surface 122 of the inner peripheral wall 120, and more generally at any location where lid 100 makes contact with cup 200.
  • the air-permeable layer 170 is preferably formed integrally with lid 100.
  • the air-permeable layer preferably comprises a foamed polypropylene material.
  • the air-permeable layer is configured on the one hand to realize a liquid-tight connection between lid 100 and cup 200, and on the other hand to allow sufficient air to pass in the case of a pressure difference between an inner space in the cup and the outside environment.
  • Air-permeable layer 170 preferably comprises a foam material, more preferably a foamed polypropylene material.
  • Air- permeable layer 170 can be formed by providing an IML label with two outer layers and a core of a foamed material, for instance a foamed polypropylene, in a mould for forming the lid and/or the cup.
  • the label preferably has a thickness of between 50 and 200 micrometres, for instance between 80 and 120 micrometres.
  • FIGS 7A-7E illustrate yet another embodiment of a lid 100 according to the invention.
  • This variant is similar to the variant of figures 2A-2F, 4A-4G, with the difference that local deepened portions are not provided, but local thickened portions 134, 134’ are.
  • Lid 100 has a U-shaped peripheral channel 140 with an inner wall 120 and an outer wall 150.
  • an outer surface 121 of inner wall 120 and an inner surface 151 of outer wall 150 is provided with a number of local thickened portions 134, 134’, although the skilled person will appreciate that the local thickened portions 134, 134’ can also be provided only on the inner wall 120 or only on the outer wall 150, depending on the position where the lid makes sealing contact with the cup.
  • FIG. 7E shows a section which is similar to that of figure 7C but in which is shown only the surface 121 of the lid and a surface 221, co-acting therewith, of a cup.
  • a local thickened portion 134, 134’ preferably has a thickness tb, measured in radial direction, which is smaller than 0.7 mm, more preferably smaller than 0.5 mm, still more preferably smaller than 0.2 mm, and for instance smaller than 0.1 mm.
  • a local thickened portion 134, 134’ has a peripheral dimension wb, measured in a peripheral direction of peripheral wall 120, which is preferably smaller than 1.5 mm, more preferably smaller than 1.2 mm, still more preferably smaller than 1.0 mm.
  • FIGS 8A-8D illustrate yet another embodiment of a lid 100 according to the invention.
  • This variant is similar to the variant of figures 7A-7E, with the difference that a large number of thickened portions 134, 134’ is provided on an outer surface 121 of inner wall 120 and on an inner surface 151 of outer wall 150.
  • the skilled person will appreciate that the local thickened portions 134, 134’ can also be provided only on inner wall 120 or only on outer wall 150, depending on the position where lid 100 makes contact with the cup.
  • more than twenty local thickened portions are provided, which are distributed over said surfaces 121, 151 of peripheral walls 120, 150, such that a network of local air passages 130 is formed between the local thickened portions, see figure 8E.
  • the local thickened portions 134, 134’ are here arranged in a pattern of a plurality of rows, although the skilled person will appreciate that many patterns are possible. Air passages 130 are here formed between mutually adjacent thickened portions 134,
  • FIGS 9A-9D illustrate yet another embodiment of a lid 100’ which is similar to the lid of figures 6A-6C.
  • Lid 100’ has an underside 101 and an upper side 102.
  • Lid 100’ is provided on its underside 101 with a U-shaped peripheral channel 140 which is bounded by an inner peripheral wall 120, an outer peripheral wall 150 and an intermediate wall 160 which connects the inner peripheral wall 120 to the outer peripheral wall 150.
  • the upper side 102 of lid 100 can for instance be similar to the upper side 102 of the lid of figures 2A-2F and, as a result, will not be described in detail again.
  • the inner peripheral wall 120 comprises a plurality of wall parts 125 which are arranged at a distance w from each other so as to form a plurality of air passages 130.
  • a thin inner peripheral wall 180 Formed on the inner side of wall parts 125 is a thin inner peripheral wall 180, preferably with a thickness smaller than 500 micrometres, more preferably smaller than 200 micrometres, still more preferably smaller than 100 micrometres.
  • This thin inner peripheral wall 180 can for instance be realized by arranging an in mould label (IML) in the mould for forming the lid.
  • the IML label is preferably manufactured from a material compatible with the material of the lid, for instance a polypropylene material when the lid is manufactured from a polypropylene material.
  • the label preferably has a thickness of between 30 and 100 micrometres, for instance between 35 and 80 micrometres.
  • the peripheral wall is very thin at the position of the empty spaces, since it is there formed only by the thin inner peripheral wall 180, such that the thin inner peripheral wall 180 can there function as a movable membrane for making the air passage 130 bigger or smaller in accordance with the pressure difference between the interior of the cup and the area surrounding the cup.
  • the inner surface 122 of peripheral wall 120 is thus formed by the thin inner peripheral wall 180.
  • a plurality of IML labels can also be provided, for instance one per empty space between two adjacent wall parts 125.
  • Peripheral wall 120 is thus provided in an outer surface 121 which is intended for the purpose of making contact with the peripheral wall part of the cup with a number of local deepened portions 131 (bounded by the adjacent wall parts 125 and the thin inner peripheral wall 180) which form the local air passages 130.
  • Each passage 130 preferably extends through an angle a of less than 20°, more preferably less than 10°.
  • the distance w between the wall parts 125 is preferably smaller than 5 mm, still more preferably smaller than 3 mm.
  • the distance w between the wall parts 125 is preferably greater than 0.2 mm, more preferably greater than 0.5 mm.
  • FIGS 10A-10C illustrate a further embodiment of a lid 100’ which is similar to the lid of figures 9A-9D.
  • Lid 100’ has an underside 101 and an upper side 102.
  • Lid 100’ is provided on its underside 101 with a U-shaped peripheral channel 140 which is bounded by an inner peripheral wall 120, an outer peripheral wall 150 and an intermediate wall 160 which connects inner peripheral wall 120 to outer peripheral wall 150.
  • the upper side 102 of lid 100 can for instance be similar to the upper side 102 of the lid of figures 2A-2F, and as a result will not be described in detail again.
  • the inner peripheral wall 120 comprises a plurality of wall parts 125 which are arranged at a distance w from each other so as to form a plurality of air passages 130.
  • a film 400 which is attached against the inner peripheral wall 120. More specifically, peripheral parts 480 of film 400 are attached against the inner side of wall parts 125.
  • the film 400 preferably has a thickness smaller than 500 micrometres, more preferably smaller than 200 micrometres, still more preferably smaller than 100 micrometres.
  • This film 400 is preferably manufactured from a material compatible with the material of the lid, for instance a polypropylene material when the lid is manufactured from a polypropylene material.
  • Film 400 preferably has a thickness of between 30 and 100 micrometres, for instance between 35 and 80 micrometres. Film 400 is arranged in partially removable manner, all this such that at least a part 425 of film 400 remains between two adjacent wall parts 125 for the purpose of fulfilling a membrane function there, as in the embodiment of figures 9A-9D. In order to be able to remove the innermost part 420 of the film 400 in simple manner, tear lines 410 are provided in film 400.
  • peripheral wall By providing empty spaces (over a distance w) between wall parts 125 the peripheral wall is very thin at the position of the empty spaces, since it is there formed only by a part 425 of film 400, such that the film 400 can there function as a movable membrane for making the air passage 130 bigger or smaller in accordance with the pressure difference between the interior of the cup and the area surrounding the cup.
  • the inner surface 122 of peripheral wall 120 is thus formed by the film 400 at the position of the air passage 130.
  • Peripheral wall 120 is thus provided in an outer surface 121 which is intended for the purpose of making contact with the peripheral wall part of the cup with a number of local deepened portions 131 (bounded by the adjacent wall parts 125 and the part 425 of film 400) which form the local air passages 130.
  • Each passage 130 preferably extends through an angle of less than 20°, more preferably less than 10°, as seen in the peripheral direction.
  • the distance w between the wall parts 125 is preferably smaller than 5 mm, still more preferably smaller than 3 mm.
  • the distance w between wall parts 125 is preferably greater than 0.2 mm, more preferably greater than 0.5 mm.
  • Lid 100’ can optionally be provided with a filter 500.
  • Filter 500 is here attached between the central passage (not shown in figures 10A-10C but designated with reference numeral 110 in the other figures) and the film 400.
  • Lid 100’ can for this purpose be provided with a stepped peripheral part with a first annular attaching part 141 for attachment of film 400 and with a second annular attaching part 142 for attachment of filter 500.

Landscapes

  • Closures For Containers (AREA)

Abstract

La présente invention concerne un assemblage d'un couvercle (100) et d'une coupelle (200) pour un liquide, le couvercle (100) étant conçu pour un accouplement amovible à la coupelle (200), le couvercle (100) ou la coupelle (200) étant pourvu d'un passage (110) pour le liquide, le passage (110) étant de préférence conçu pour être accouplé à un pistolet de pulvérisation (300) pour pulvériser le liquide, le couvercle (100) étant pourvu d'une paroi périphérique (120) qui est conçue pour être en contact avec une partie paroi périphérique de la coupelle (200), la paroi périphérique (120) du couvercle (100) et/ou la partie paroi périphérique de la coupelle (200) étant conçues pour former un certain nombre de passages d'air locaux (130) entre la paroi périphérique (120) du couvercle (100) et la partie paroi périphérique de la coupelle (200).
PCT/IB2020/054274 2019-05-06 2020-05-06 Couvercle pour coupelle, en particulier couvercle pouvant être monté sur un pistolet de pulvérisation de peinture WO2020225739A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20726243.7A EP3965945A1 (fr) 2019-05-06 2020-05-06 Couvercle pour coupelle, en particulier couvercle pouvant être monté sur un pistolet de pulvérisation de peinture

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE20195295A BE1027259B1 (nl) 2019-05-06 2019-05-06 Deksel voor beker, in het bijzonder een deksel monteerbaar op een verfpistool
BE20195295 2019-05-06
BE201905860 2019-12-03
BE20195860 2019-12-03

Publications (1)

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WO2020225739A1 true WO2020225739A1 (fr) 2020-11-12

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PCT/IB2020/054274 WO2020225739A1 (fr) 2019-05-06 2020-05-06 Couvercle pour coupelle, en particulier couvercle pouvant être monté sur un pistolet de pulvérisation de peinture

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EP (1) EP3965945A1 (fr)
WO (1) WO2020225739A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3110465A1 (fr) * 2020-05-20 2021-11-26 Exel Industries Godet pour pistolet de produit de revêtement à équilibrage de pression

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664703A (en) * 1994-02-28 1997-09-09 The Procter & Gamble Company Pump device with collapsible pump chamber having supply container venting system and integral shipping seal
WO2007003245A1 (fr) * 2005-07-05 2007-01-11 N.V. Omniform S.A. Reservoir de pistolet de pulverisation dote d’un orifice d’entree etanche aux liquides
WO2014160922A1 (fr) * 2013-03-29 2014-10-02 3M Innovative Properties Company Assemblage de conteneur aéré
BE1026378A1 (nl) * 2018-06-15 2020-01-16 Deca Packaging Group Nv Ventielloze recipiënt voor gebruik op een spuitpistool en werkwijze waarbij zulke recipiënt wordt toegepast.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664703A (en) * 1994-02-28 1997-09-09 The Procter & Gamble Company Pump device with collapsible pump chamber having supply container venting system and integral shipping seal
WO2007003245A1 (fr) * 2005-07-05 2007-01-11 N.V. Omniform S.A. Reservoir de pistolet de pulverisation dote d’un orifice d’entree etanche aux liquides
WO2014160922A1 (fr) * 2013-03-29 2014-10-02 3M Innovative Properties Company Assemblage de conteneur aéré
BE1026378A1 (nl) * 2018-06-15 2020-01-16 Deca Packaging Group Nv Ventielloze recipiënt voor gebruik op een spuitpistool en werkwijze waarbij zulke recipiënt wordt toegepast.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3110465A1 (fr) * 2020-05-20 2021-11-26 Exel Industries Godet pour pistolet de produit de revêtement à équilibrage de pression

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