EP0156914A1 - Method of and apparatus for application - Google Patents

Abstract

Application method in which a solution contained in an aerosol container is guided from a rod into an applicator member installed on a lateral surface of the aerosol container and is then extruded from an application surface, so as to be applied to carpet or other covering. A method is also described for effectively destroying harmful insects, such as ticks, contained in carpets by the method described below. The application process is efficiently carried out using an application type aerosol device. The device has an application unit comprising an applicator member fixed to the external surface of the device in the longitudinal direction of the latter and a guide chamber defined between the internal surface of the applicator member and the external surface of the device, the solution contained in the aerosol container being guided into this chamber. The application unit is installed outside the aerosol container in the longitudinal direction of the latter, and an inlet port connected to the rod of the aerosol container is connected to the application unit, allowing the solution from the intake port to flow to the outer surface of the application unit.

Description

Technical area

This invention relates to - a method of applying the content of an aerosol packaging and apparatus for implementing this method, characterized by the steps of guiding this liquid content by means of a rod towards a formed applicator element on a lateral part of the aerosol packaging, which causes the liquid content to flow from an application face of the applicator element, and from the application of the liquid which flows over a given surface, -a process for removing insects from carpets and floor coverings by treating the roots of the threads of carpets and floor coverings using the application process mentioned above, and an aerosol device suitable for this application. Technical background

lifestyle changes in recent years have encouraged an increasing number of homes to adopt the practice of laying carpets directly on concrete or wooden floors or placing a mat or mat first strongly hygroscopic tatami mats (straw mat used as floor covering), directly on these soils and then superimposing carpets on the mat or tatami mat. These floor coverings have favored the growth of various species of mites of the mite type, of house dust mites, of cheyletines, which not only displease the inhabitants but also expose them to diseases such as allergic asthma and psoriasis. Wool carpets and sheep coverings are infested with moths and anthers that live on the hair of animals. The larvae of these insect pests hide deep in the roots of carpet threads, eat at random in these roots and soil the carpets accordingly. The gradual rise in living standards has encouraged the frequent employment of many types of agents for external application, such as furniture cleaning agents, antistatic agents for clothing, phonograph records and plastic items, water repellents and stain removers for clothing, softeners and brighteners for leather goods, fungostatics and deodorants for clothing and leather goods, flame retardants for curtains and wall papers, cleaning and de-icing products for glass goods, anti-rust lubricants for sliding doors , lubricants for various sliding surfaces, bactericidal deodorants for patient rooms and sick beds, mosquito repellents and insecticides for stuffed animals, hair care agents, mosquito repellents and insecticides for stuffed animals , and carpet detergents.

• (1)Ces dispositifs sont incapables de permettre à leurs contenus tels que des insecticides, d'atteindre les racines des fils des tapis. Les contenus qui sont appliqués, bien qu'ils soient efficaces du point de vue de la prévention, ne peuvent pas produire leurs effets autant qu'on le souhaiterait sur les mites et les insectes nuisibles logeant déjà dans les tapis.
• (2) Puisque ces dispositifs entraînent la dispersion de leurs contenus dans les espaces environnants, ils peuvent exposer leurs utilisateurs aux dangers qui consistent à inhaler les substances nocives se déplaçant dans l'air et à souffrir d'une perte de santé.
• (3)Puisque ces dispositifs permettent inévitablement la dispersion de leurs contenus au cours de l'application, une partie des agents libérés qui ne peut pas atteindre les surfaces sous traitement adhère aux accessoires et aux mobiliers voisins pour tâcher leurs surfaces et salir leur environnement.
• (₄) Lorsque les objets sous traitement n'ont pas de surfaces plates lisses comme c'est le cas des articles en feutre par exemple, les dispositifs sont incapables de permettre à leur contenus d'atteindre les racines des fils lainés.

Until now, hand pumps and aerosol projectors have been the prevailing means for the application of these agents to carpets and other floor coverings. However, they have the following problems:

• (1) These devices are unable to allow their contents, such as insecticides, to reach the roots of carpet threads. The contents which are applied, although effective from the point of view of prevention, cannot produce their effects as much as would be desired on the mites and the harmful insects already lodging in the carpets.
• (2) Since these devices cause their contents to disperse in the surrounding spaces, they can expose their users to the dangers of inhaling harmful substances moving in the air and suffering health loss.
• (3) Since these devices inevitably allow the dispersion of their contents during application, some of the released agents which cannot reach the surfaces under treatment adhere to the accessories and neighboring furniture to stain their surfaces and soil their environment.
• ( ₄ ) When the objects under treatment do not have smooth flat surfaces as is the case with felt articles for example, the devices are unable to allow their contents to reach the roots of the woolen threads.

As an approach to solving these problems, furniture cleaning products have been invented which have sponge adapters and toric brush caps mounted around the sprayer jets. With these devices, users just have the possibility of spraying the products on the surfaces of the donated objects and then spreading these products deposited on the surfaces using brushes or sponges, supplied separately next to the jets of the packaging. Thus, these devices are still unable to overcome the problems (1), (2), (3) and (4) listed above. The surfaces actually treated with these devices are limited and the agents released cannot be spread uniformly. Statement of the invention

considering the exact state of the prior art described above, the inventors have pursued a diligent study oriented towards the development of a process capable of applying precisely and surely desired active agents to clothing, leather goods, furniture and carpets. Consequently, they have found that the aerosol spray method, precisely the method which comprises the steps of guiding the liquid content of an aerosol package via a rod towards an applicator element formed on the side wall of aerosol packaging, flow of the liquid content out of the application surface of the applicator element and spreading of the agent which flows over a given surface, allows safe and effective treatment as desired . This knowledge led to perfect this invention.

The method that this invention uses for the application of an active agent such as the insecticide or miticide contained in an aerosol package is characterized in that an applicator element formed along the length of the side wall of the container is used. aerosol packaging and which allows the active agent to be released via the applicator element and to be deposited on a given surface, instead of using the conventional adapter mounted around the nozzle of the aerosol packaging for example. The applicator element formed on the side wall of the aerosol package and the guide means for sending the active agent from the rod to the applicator element are not precisely limited as regards their shape.

Such an application method according to the invention as described above represents a new concept never anticipated by the conventional method for applying the content of an aerosol package.

This invention further relates to an aerosol package of the application type, used for carrying out the method mentioned above for the application of the active agent such as the insecticide or miticide contained in the aerosol package.

• un support d'application disposé en direction verticale sur la paroi extérieure de l'emballage aérosol et adapté pour fixer l'élément applicateur en direction longitudinale sur sa surface externe et en même temps pour former sur la surface interne de l'élément applicateur une chambre de guidage pour l'agent actif. contenu dans l'emballage aérosol et

More specifically, this invention provides an apparatus for applying the active agent contained in the aerosol package by guiding the active agent from a rod to an applicator member formed on the side wall of the aerosol package and causing the active agent to flow from the application face of the applicator element, this device comprising:

• an application support disposed vertically on the outer wall of the aerosol can and adapted to fix the applicator element in longitudinal direction on its external surface and at the same time to form a chamber on the internal surface of the applicator element guidance for the active agent. contained in the aerosol can and

a guide inlet connecting a rod of the aerosol package and the applicator element mentioned above so as to form a path allowing the active agent to flow from the application face of the applicator element.

In the aerosol device for application of the invention, the applicator element can be made of a liquid absorption material and the connection between the guide inlet and the application support can be made by opposing the inlet guide to an upper side wall of a guide support inserted in the guide chamber between the inner surface of the guide chamber and the flow space of the active agent.

Consequently, in one embodiment of this invention, the aerosol apparatus of the application type comprises an application support disposed vertically on the external wall of the aerosol packaging and adapted to fix the applicator element made of a material. liquid absorption in the longitudinal direction on its external surface; on the internal surface of the applicator element is formed a guide chamber for the active agent contained in the aerosol canister and a guide inlet connected to a rod of the aerosol canister is placed opposite an upper side wall a guide support inserted in the guide chamber in the middle of the inner surface of the guide chamber and the flow space of the active agent, so as to allow the active agent introduced by the intermediate of the guide arrival to flow from the external face of the application support.

Furthermore, in the aerosol apparatus of the application type, the application support can be manufactured by forming a trough-like receiving frame closed at its opposite ends in the longitudinal direction and having an opening formed therein. In this reception frame, the applicator element is fixedly installed. of a non-absorbent material, having a smooth application face projecting from one side.

In this embodiment of the invention, the aerosol device for application precisely comprises a guide inlet connected to the rod of the aerosol package and opening in a trough-shaped reception frame, closed at its ends. opposite in the longitudinal direction, an applicator element made of a non-absorbent material having its smooth application face projecting from one side and fixedly arranged in the receiving frame, and a flow space for the active agent interposed between the applicator element and the receiving frame, so that the active agent introduced via the guide inlet can flow from the external face of the application support.

All the embodiments described above share the basic operating principle, namely that the active agent contained in the aerosol packaging is sent from the rod to the applicator element formed on the side wall of the aerosol packaging. and that it can then flow from the application face of the applicator element. The applicator element formed on the side wall of the aerosol package and the guide means located between the rod and the applicator element are not particularly limited as to their shape.

The application device of the present invention described above represents an entirely new concept, never provided for by the conventional device, developed for the application of the contents of the aerosol package.

Other objects and features of this invention will become apparent from the subsequent description of the invention made in the following detailed description of preferred embodiments, with reference to the accompanying drawings.

Brief Description of the Drawings Figure 1 is a perspective view of an aerosol device of the application type according to one embodiment. tion of the invention.

• Figure 2 is an enlarged cross-section of part of the apparatus of Figure 1.
• FIG. 3 is a lateral cross section of the part of a guide inlet in the diagram of FIG. 1.
• FIGS. 4 and 5 are lateral transverse sections illustrating modifications of the part of the guide inlet of FIG. 3.
• Figure 6 is a cross section of the apparatus of Figure 1.
• Figure 7 is a partial cross section of an aerosol apparatus of the application type according to another embodiment of this invention.
• Figure 8 is a partial cross-section of an aerosol device of the application type according to another embodiment of this invention.
• FIG. 9 is an elevation of a reception frame shown in the diagram of FIG. 8.
• Figure 10 is a cross section taken along line IX-IX in the diagram of Figure 9.
• Figure 11 is a partial perspective diagram illustrating an application support.
• Figure 12 is a side cross section of a connecting tube holding a receiving frame and an application support assembled.
• FIG. 13 is a diagram showing the positions in which the fungal spores are transplanted onto a cover used in the experiment (4). Modes of Carrying Out the Invention
• The present invention will be described more precisely below with reference to the accompanying drawings.

Figure 1 is a perspective view of an aerosol apparatus of the application type according to an embodiment of this invention. Figure 2 is an enlarged cross-section of part of the embodiment of Figure 1. Figure 3 is a lateral cross section of the portion of a guide inlet in the apparatus of Figure 1. In these diagrams, an aerosol package 1 consists of an aerosol unit, an injector of the type pump, clamp cylinder unit, etc. At the upper end of a cylinder 2, a mounting cup is fixed by means of a fixing flange 3. A rod 5 passes and leaves the mounting cup 4. To this rod 5 is connected a button 6. The pressure button 6 is constructed so that when lowered, the contents such as an insecticide, a paint, a cleaning agent or a wax prepared in an applicable form, spurts through a nozzle 7 due to the propelling force of an accumulated pressure propellant or the pressure generated by a pump mechanism. This nozzle 7 is integrally formed, via its outer end, with a button cover 8, fixed on the upper end of the aerosol can 1. While the pressure button 6 is kept lowered, the nozzle 7 folds slightly and changes shape to guide the contents of the aerosol can 1 towards the outside. Over almost its entire length, in the vertical direction of the aerosol can 1, an application support 11 is fixed by means of raised flanges 10 of the button cover 8. This application support 11 allows an element sheet-shaped applicator 12, made of an absorbent material such as felt, open-cell foam, paper, nonwoven fabric or fabric, to cover three sides of its external surface in the direction of the length, admits the opposite sides of the applicator element 12 into adjustment grooves 13 each formed on its opposite sides and maintains the applicator element 12 over a prescribed width with assembly bars 14. In the application support 11, a guide chamber 15 for the contents of the aerosol can is formed in the direction of its length on the internal surface of the applicator element 12. The nozzle 7 of the aerosol can 1 is connected to the upper end of the guide chamber 15 and a guide support 17 of cylindrical shape is inserted in the guide chamber 15 in the middle of the inner surface of the guide chamber 15 and a flow space 16 for the contents of the aerosol can. An injection orifice 18 of the nozzle 7 mentioned above is placed opposite the central part of an upper side wall of the guide support 17.

In the apparatus constructed in the manner described above, when the pressure button 6 is depressed to cause the contents of the aerosol can 1 to spurt out through the nozzle 7, almost all of the contents which spurts from the nozzle 7 strikes the upper side wall of the guide support 17. Only a portion of this content advances directly via the inner surface of the guide chamber 15 and the flow space 16 in the upper part of the applicator element 12. Most of the remaining content which has sprung is partly brought to rest on the guide support 17 and to flow along the flow space 16, being partly entrained by the content which then springs from the nozzle 7 then is brought into contact with the interior surface of the application support 11 and is absorbed there. Consequently, this content is uniformly dispersed over the entire surface of the applicator element 12 disposed in the vertical direction of the aerosol can 1 and adapted to have a large surface.

In the embodiment described above, the applicator element 12 is in the form of a sheet and the application support 11 causes this applicator element 12 to cover three of its sides in the direction of the length of its outer surface. It admits the opposite faces of the applicator element into the adjustment grooves 13 each formed on its opposite sides, and it fixes the element applicator element 12 according to a prescribed width by means of bars 14. According to a modification of this embodiment, the applicator element 12 can be produced in the form of a plate having its external surface curved outwards, this applicator element in the form of a plate 12 which can be fixedly mounted on the front face of the applicator element 11, as shown in FIG. 4 and in FIG. 5.

In the previous embodiment, the guide support 17 is of cylindrical shape. According to a modification of this embodiment, it can be in the form of a flat plate or in the form of a flattened cylinder having an elliptical cross section as illustrated in FIG. 4 and in FIG. 5.

In the embodiment described above, the release of the contents which gushes out is carried out by depressing the pressure button 6. When the packaging is a spray bottle, this release of the contents can be carried out by pressing the cylinder 2 of the bottle. When using an aerosol unit, a continuous spray mechanism can be adopted, capable of continuously spouting the contents. In another way, the applicator element 11 can be adapted so that the gushing of the content is obtained by pressing the applicator element 11 against the object to be treated and by allowing the pressure thus applied to press directly on the rod 5. The forced release of the content by the pressure of the applicator element 11 will now be described, more specifically with reference to FIG. 6. The rod 5 is connected to an inclined operating valve adapted to make the content spout out when it is pressed in a direction intersecting its axial direction. The applicator element 11 which is connected to this rod 5 via the nozzle 7, is opposed to the aerosol can 1 through a suitable movement space 20. In addition, one face at the lower end of the applicator element 11 is pivotally supported on the base support 21 with a fixing rod 22. In the apparatus constructed in the manner described above, when the applicator 12 is pressed against the object to be treated, the application support 11 moves in the direction of the aerosol packaging 1 with the fixing rod 22 as a fulcrum for tilting the rod 5 by means of the nozzle 7. Consequently, the valve of the aerosol can 1 is released to make the contents flow out through the nozzle 7 and, by virtue of the operation mentioned above, to cause the contents which gush out to disperse over the entire surface of the applicator element 12.

A similar embodiment, according to the present invention, is shown in FIG. 7.

Figure 7 is a partial cross section of the apparatus. In the drawing, an aerosol package 1 is fixed with an application support 11 over its entire length in the vertical direction. The application support 11 has an applicator element of the sheet type 12 made of an absorbent material such as felt, open-cell foam, paper, a nonwoven fabric or cloth and so on, or an applicator element made of a non-absorbent material so as to distribute the liquid content over the entire applicator element 12, and a flow space 16 formed inside the applicator element 12 and connected to a nozzle.

In the apparatus constructed in the manner described above, when the pressure button 6 is lowered to make the contents of the aerosol container 1 spout out via the nozzle 7, the contents strike a guide support 17 and is also guided by a flow space 16 to flow therein or to be entrained therein due to the depression of the content then projected by the nozzle 7. The content is thus uniformly dispersed over the entire surface of the applicator element disposed vertically on the package 1 so as to perform the desired application.

Thanks to the construction described above, the present invention provides the following effect. Since the application support which has the applicator element fixed in the direction of the length on its external surface, is fixed in the vertical direction on the external wall of the aerosol can, the device offers a large application surface . Because the projection nozzle of the aerosol can or the guide inlet connected to the rod is placed opposite the guide support inside the guide chamber, almost all of the content projected by the intermediate of the projection nozzle strikes an upper side wall of the guide support and only a small portion of the projected content is absorbed by the applicator element via the interior surface of the guide chamber and the space content and becomes applicable. At the same time, most of the projected content remains on the guide support, flows along the flow space and disperses uniformly over the entire surface of the applicator element with a large surface. As a result, the applicator element may have a large surface for the application of the content and allows the application of the content to a large surface with great efficiency.

Now, another embodiment according to the invention will be described below with reference to the accompanying drawings. Figure 8 is a partial cross section of the aerosol apparatus of the application type according to another embodiment of this invention. Figure 9 is an elevation of a housing frame in the apparatus illustrated in Figure 8. Figure 10 is a cross section along line IX-IX shown in the diagram in Figure 9. Figure 11 is a partial perspective view of the application support. Figure 12 is a side cross-section of the portion of a connecting tube used to hold the housing frame and the device support reciprocally assembled plication.

In these diagrams, an aerosol package 101 has a mounting cup 104 fixed to the upper end of a cylinder 102 by means of a flange 103. A rod 105 comes out of this mounting cup 104. At this rod 105 is connected a pressure button 107 having a tilting guide tube 106 protruding on one of its sides. The rod 105 is adapted so that when the pressure button 107 is lowered, a valve mechanism placed inside it opens and the content of the aerosol such as an insecticide, a paint, a product of cleaning or a wax prepared in an applicable form, spurts accordingly through the guide tube 106. The front end of the guide tube 106 is fixed to a side wall 110 of a button cover 108, fixed to the upper end of the aerosol can 105. On the external surface of the fixing element 111 is formed a depression 112 for its insertion. A receiving frame 113 is connected to the outside lateral wall of the touch-sensitive cover 108 and to the aerosol can 101 along the length of the assembly in the axial direction towards the lower end of the aerosol can 101. housing 113 is formed of a flattened trough-like element 115, having its extreme sides in its longitudinal direction closed with walls 114 facing each other. A connection tube 117 communicating with a guide inlet 116 opening into the flattened trough-like element 115 projects beyond the rear. This connection tube 117 is detachably connected to the depression 112. Consequently, by means of this connection tube 117, the content of the aerosol supplied by the guide tube 106 is introduced into the depression in the form of 'trough 115. This trough-shaped depression 115 has an arcuate applicator element, with a smooth surface 118, protruding on one side in the direction of the length which must be provided with an application support 120, produced in a non-absorbent material. On the rear surface 122 of the trough-shaped depression 115 which is in very good contact with the rear face 121 of the application support 120, a groove 123 communicating with the guide rear 116 is formed in the central part, in the direction of the length of the trough-shaped depression 115. A notch 124 is formed on the rear side 121 of the application support 120 in the position corresponding to the front end part of this groove 123. A dispersion groove 126, communicating with this notch 124, is formed in the lengthwise direction of the side wall 125 of the application support 120. On the side wall 125 of the application support 120, continuing in the dispersion groove 126 and on the side of the application support 120 , are made of fine surface irregularities 127 resembling the aventurine model. Therefore, a small flow space for the contents of the aerosol is formed along the inner wall 128 of the side wall of the receiving frame 113. This flow space still appears between the groove 123 mentioned above. and the rear face 121 of the application support 120, between the notch 124 and the bottom surface 122 of the receiving frame 113, and between the dispersion groove 126 and the internal surface 128 of the side wall of the frame 113. Thus , through this flow space, the content of the aerosol can be distributed to the applicator element 118 of the application support 120. The reception frame 113 is formed in the manner described above to place in the direction of the length on a side face of the aerosol can 101. The connection of this frame 113 with the aerosol can 101 is done by causing the insertion of the fixing of a hanging tab 132, protruding from the lower end of the receiving frame 113 in the assembly groove 131 of the fixing element 130 fixed on the lower bottom of the aerosol can 101. At the same time, it determines the pinching of a fixing tab 133 which protrudes from opposite faces in the direction of the upper end of the receiving frame 113 and which must be engaged with hooking depressions (not shown sensed), on the external lateral face of the touch-sensitive cover 108 fixed to the upper end of the aerosol can 101. The receiving frame 113 and the application support 120 are fixedly joined by causing insertion with attachment of the attachment projections 134 each formed at the upper and lower ends of the rear face 121 of the application support 120 and of the parts provided for attachment of the frame 113.

Naturally, it is possible to advance the content of the aerosol towards the application support 120, simply by depressing the pressure button with a finger. In the embodiment presented, the progression of the content of the aerosol is carried out using a permanent valve opening mechanism 136. This mechanism 136 is produced by providing the pressure button 107 on its opposite faces an operating lever 140, the lower ends of which are pivotally supported on the fulcrum of an axis 137, and the upper end of which forms a hollow plate 138, by perforating an oblong groove 142 in the direction vertical in the support wall 141 of the operating lever 140, further forming a latching depression 143 on the side faces of the oblong groove 142 and letting the latching depression 143 communicate with the oblong groove 142. In addition, a latching projection 145 is fixed on the internal faces of the external walls 144 of the touch cover 108 and is inserted into the oblong groove 142. The latching projection 145 and the support element of the axis 137 of the levi er of operation 140 under conditions which do not cause the aerosol content to spurt out, are separated by a distance less than the distance between the support element of the axis 137 and the hanging depression 143. This difference in distance constitutes the stroke of the depression exerted on the pressure button 107 for the spouting of the content of the aerosol. The support wall 141 on which are formed the oblong groove 142 mentioned above and the hanging depression 143 on the side opposite to the pressure button 107, at its upper end connected to the recessed upper plate 138 so as to ensure precise depressing of the pressure button 107 In addition, a display means 146 protrudes from the upper face on one end of the upper plate 138. In a cover plate 147 of the receiving frame 113 above the button cover 108, a viewing opening 148 is provided. , which allows the means 146 to exit only during the operation of the continuous opening valve of the operating lever 140 and does not allow its exit in the absence of the operation of this valve.

In the apparatus constructed in the manner described above, when the upper depression plate 138 of the operating lever 140 is lowered, the button 107 is pressed down via the fulcrum of the axis 137 so as to release the valve mechanism and advance the content of the aerosol towards the guide tube 106. When the upper plate 138 no longer supports the vacuum, the button 107 rises thanks to the spring of the valve mechanism and the gushing of the contents towards the guide tube 106 stops. The content of the aerosol which has progressed can flow along the flow space defined between the guide tube 106, the guide inlet 116, the groove 123, the notch 124, the dispersion groove 126 and the fine surface irregularities 127 on the one hand and their opposite external faces on the receiving frame 113 and the application support 120 on the other hand. As the applicator element 118 must take a lower horizontal position relative to the device as a whole, the content of the aerosol is uniformly dispersed in the applicator element and can be applied uniformly to the object to be treated. The intermittent spurting of the aerosol contents mentioned above is sufficient for the application of a small amount of the active agent on a small area. For the application of a large quantity of active agent on a large surface, it becomes necessary to continuously spray the contents of the aerosol. To achieve continuous spouting of the contents of the aerosol, the operating lever 140 is lowered to start spouting and is then placed obliquely in the direction opposite to spouting as indicated by the dashed line in Figure 8 so that the latching projection 145 is brought into engagement with the latching depression 143 formed continuously along the oblong groove 142. When the latching projection 145 is in the condition which does not cause the contents of the aerosol, it is held inside the oblong groove 142 of the operating lever 140 and it can have no effect on this lever. Since the distance between the fulcrum l ^the axis 137 and the latching projection 145, when the press button 107 is in the conditions which do not involve the spouting of the aerosol content, is less than the distance between the fulcrum of the axis lever 137 and the hanging depression 143 and that this difference in distance constitutes the driving stroke that the pressure button 107 requires to initiate the spouting of the content of the aerosol, l 'attachment established between the attachment depression 143 and the attachment projection 145 keeps the pressure button 107 lowered and allows the continuous spouting of the content of the aerosol. This continuous gushing causes the movements relating to the attachment of the attachment projection 145 with the attachment depression 143 placed along the oblong groove 142 and to the lowering of the fulcrum of the axis 137. Consequently, the operating lever 140 which serves as a permanent valve opening mechanism 136 moves relative to the position which it ensures in the absence of spouting of the content of the aerosol. In particular, the visuali sation 146 protruding at one end of the recessed upper plate 138 greatly changes its position so as to exit from the viewing opening 148 of the cover plate 147 of the key cover 108 to clearly indicate that the valve opening mechanism permanent 136 is then in action. A red color or a fluorescent color applied to the upper part of the display means 146 helps by adding a lot to highlighting the operating state.

As described above, this invention allows the content of the aerosol supplied via the guide inlet to flow from the external face of the application support, causing the guide inlet to open. connected to the rod of the aerosol can towards the receiving frame in the shape of a trough closed on its opposite sides in its longitudinal direction, and at the same time allowing the solid fixing of the application support made of a non-absorbent material in the receiving frame with the applicator element of flat and smooth surface projecting on one side which gives rise to the space for flow of the aerosol content between the application support and the frame. Thus, the applicator element exerts an extremely low friction resistance on flexible materials such as carpets and fabrics. Therefore, it can be strongly pressed against a flexible object of great thickness such as a carpet so that the content of the aerosol is applied to the deep cavities of the object.

The aerosol device of the application type used according to the invention is not necessarily limited to the above embodiments. For example, the shape of the applicator element can be freely chosen to suit the intended use and the surface of the object to be treated. When you adopt the device for applying the content of the aerosol on furniture and clothing items that have large areas, it is very effective because the applicator element extends almost over the entire length of the aerosol can. When the apparatus is intended for articles of small surface, the part of the applicator element formed over a part of the entire length proves effective.

Since the content of the aerosol is in the liquid state when it passes the guide section, the guide section can have any desired shape. It is only necessary that the content of the aerosol progresses towards the applicator element.

The gas spout orifice may for example be in the form of a tube deployed on the lateral face of the packaging and provided in suitable positions with spouting orifices, the application support being able to be fixed to this tube.

In addition, in the device constructed as illustrated in the diagrams, it is possible to insert a guide bar adapted to adjust the movement of the content of the aerosol. Although the guide support is effective in guiding the content of the spray aerosol towards the guide section, it is not an essential constituent when the application support is made of a non-absorbent material or when the upper part of the guide bar is opposite the gushing outlets of the nozzle.

Examples of the solvent for the active agent fixed in the contents of the aerosol include alcohols, ketones, ethers, oils, halogenated hydrocarbons, fluorohalogenated hydrocarbons and various other substances. This solvent can be chosen to suit the intended use. Petroleum-based solvents generally excel in their ability to facilitate the absorption of active agents by the treated surfaces, but they are likely to wet the surfaces. When the objects to be treated require the rapid and safe drying of the active agents, the use of a non-flammable solvent or of their mixtures chosen from the group comprising lower alcohols, ethers and fluorohalogenated hydrocarbons having boiling points not exceeding 100 ° C. proves desirable. As a propellant, any conventional propellant can be used, such as those generally adopted for mist aerosols. To ensure safety against fire, it is desirable that such a propellant be used in admixture with a flame retardant gas.

Examples of the active ingredient to be incorporated into the contents of the aerosol include furniture cleaning products such as "Carnauba", "Ceresin", and "Silicone 200" waxes, antistatic agents or agents for removing static electricity containing sulfates of higher alcohols and organic amine salts of phosphates of higher alcohols, waterproofing agents such as stearamide methylpyridinium chloride, octadecylethylene urea and silicone resins, softening agents and brighteners for leather goods using spermaceti alcohol, liquid paraffin and fatty acid esters of glycerin as main constituents, varnishes, fungicide products such as sorbic acid and acid dehydroacetic, deodorants such as glycerol and hexachlorophene, glass cleaning products containing straight chain sodium alkylbenzenesulfonate and sodium pyrophosphate potassium, stain removers and de-icing agents using alcohols and diethylene glycol, anti-rust lubricants and lubricants for supplies consisting of metallic soaps, sorbitan mono-oleate and naphthenic acid, fungicidal deodorants for patient rooms , such as cresol or benzalkonium chloride, hair care agents using the sodium salt, lauryl ethyl sulfate as the main constituent, salicylic acid, acrolin, and invert soap. Examples of insecticides and miticides include various pyrethroid compounds such as phenothrin, permethrin, resmethrine, 3'-phenoxybenzyl 2,2,3,3, -tetramethylcyclopropane carboxylate, allethrin, furamethrin, empenthrin and other proprietary medicinal products, synergistic agents for pyrethroid compounds such as IBTA, S-421, lethane 384, piperonyl butylate, "Sorepyrin 222" and "Serepyrin 500", various organophosphorus insecticides such as sumithion, diazinon, various carbamate insecticides such as "MTMC", and "MPMC" , other insecticides and mosquito repellants such as "Deet" and benzyl benzoate. The combined use of these active ingredients with fungicides and bactericides is also possible. Also included are insecticides and mosquito repellants containing pyrethroid-type compounds and used for the protection of stuffed animals and stuffed animals. These examples are cited only to illustrate and not to limit the active ingredient in the content of the aerosol which is suitably determined depending on the intended use and the conditions of application for example.

For the extermination of various species of dust mites from homes infesting carpets, the application of a pyrethrum-type compound at a rate of 0.5 mg to 5 g per square meter, possibly in combination with an increasing agent the synergy of the pyrethrum type compound applied at a rate of 0.5 mg to 5 g is sufficient. This app is very safe.

This invention is particularly intended for the protection of carpets and floor coverings. It is effective in exterminating various species such as house dust mites, cheyletins, mite type mites and wool-damaging insects such as moths, web moths, various anthrene, black beetles infesting carpets all stages of their growth, i.e. eggs, larvae, nymphs, imagos. In addition, it is effective in exterminating household ticks, atropos and beetles, wasp flies, cockroaches, cereal pests such as rice weevils, fleas, lice and bedbugs.

This invention is not limited at all as to the type of carpet or floor covering to be treated. It is also effective in the treatment of oriental blankets, wool carpets, looped carpets, fur and sheep cushions, and all kinds of floor coverings without reference to the depth of the threads or pile.

This invention is quite unique in the sense that it adopts an aerosol device of the application type, designed to be used safely (free from toxicity and combustion) inside and such that the application surface of a material with a freely chosen shape, ensures an effective and uniform application of the active agent mentioned above.

Now, the invention will be described more precisely with reference to various examples of implementation. It should be noted, however, that the following examples do not limit this invention.

Experiment 1: (test-on the extermination effect) 7 cm squares cut out of a carpet are all infested with about 200 mites of house dust and after a period of one day, they are treated with a variety of agents according to the method of this invention. Each square of carpet thus treated is placed in a glass container and left to stand under conditions which are 25 ° C. for the temperature and 65% for the humidity. After a period of one week under these conditions, the square is heated to hunt the surviving mites. The extermination rate is determined by taking into account the surviving mites thus driven out of the treated square.

As a control, we try the conventional spraying process at the same time? 5 and 6).

The results of the test indicate that in all the tests carried out according to the aerosol method by application according to the invention, the rates of extermination of the dust mites of dwellings are invariably 100% while in the tests conducted according to In the conventional spraying process, the extermination rates are very low because the agents cannot reach the roots of the carpet threads. In the formulation of test No. 3 which uses petroleum as solvent, the agent applied does not dry as quickly as desired and tends to make the surface of the treated carpet tacky.

Experiment 2: (test on the preventive effect)

Squares of 7 cm cut from a carpet are treated with a variety of agents according to the method of the invention, and after a period of 1 day, they are infested with about 200 mites of house dust. Then, following the procedure of Example 1, the extermination rate of the mites is determined after a period of one week.

As a control, the conventional spraying process is tested at the same time (tests no. 4 and no. 5).

The results of the test indicate that the treatment by the aerosol method by application according to the invention is highly effective, by preventing the carpet from being infested with mites and that the agents applied manifest significant residual effects. In the tests carried out according to the conventional spraying method, although the preventive effects are relatively higher than the extermination effects, they remain insufficient.

Experiment 3: (test of the furniture cleaning product as to the effect)

Various cleaning products are applied to areas of 1 m ² of the surfaces of articles of furniture completely soiled with greasy dirt, using the aerosol device of the type for application of the invention.

As a control, the same treatment is carried out according to the conventional spraying method and the method using an apparatus which has a felt toroidal adapter near the spray nozzle. After the treatment, the surfaces are examined in relation to cleanliness (A), the degree of dispersion of the active agent in the surrounding area (B) and the duration of the treatment (C). The results of the test are classified on the four-point scale in which ++++, +++, ++ and + denote progressively decreasing orders starting respectively from the highest degree of cleanliness in (A), the lowest degree of dispersion of the active agent in (B) and the shortest duration of treatment in (C).

The results of the test indicate that the method of applying the aerosol (tests 1 and 2) according to the invention far exceeds the conventional methods, that is to say the spray method ( _s test No. 3) and the method using the apparatus which has a ring adapter sponge attached proximate the spray nozzle (test No. 4), in respect of the cleanliness due to the treatment, prevention the dispersion of the agent applied in the surrounding area and the duration of the treatment.

Experiment 4: (test on the fungicidal and deodorant effect on a woolen article)

Molds developing in a cabinet are incubated and transplanted in 5 points on a variety of covers (0.5 m wide and 1.5 m long) at the positions indicated by the mark X in Figure 13. Then the blanket is left under 100% humidity for 2 weeks. To the covers thus prepared, various active agents are applied by the method of this invention and the conventional methods for examining the fungicidal and deodorant effect, the degree of dispersion of the active agent (A), and the duration of the treatment (B). . In treatments according to conventional methods, the agents are sprayed at a distance of approximately 40 cm from the surface of the covering.

The results of the test are classified according to the four-point scale in which ++++, +++, ++ and + denote progressively decreasing orders, starting respectively from the highest fungicidal and deodorant effect, lowest degree of dispersion of active agent and shortest duration of treatment.

The results of the test indicate that the method of applying the aerosol by application (tests 1 and 2) according to the invention far surpasses the conventional methods (tests 3 and 4) in with regard to the fungicidal and deodorant effects, the prevention of the dispersion of the active agent in the surrounding area and the duration of the treatment.

While the spray method is not applicable for the active agent to reach the roots of the carpet yarns, the method of the invention is capable of distributing the active agent all over the entire surface of the blanket.

Example 1

In a mixed solvent ethanol and F-113, 1.0 g of d-resmethrin and 2.0 g of "Synepyrin 500" are dissolved. The solution is placed in an aerosol packaging of the spreading type and a pressurized propellant is added thereto to produce an aerosol. About 1/4 of the total volume of the aerosol mentioned above is applied to the entire surface of a carpet covering 6 tatami mats (straw mats) and suffering from the significant growth of house dust mites. After a period of 1 week, the coverage is examined to find out the survival rate of the mites. The rate is less than 2%.

Example ² an aerosol

Preparing / by spreading following the method of Example 1 but using 1.5 g of d-phenothrin 2.0 g of benzyl benzoate. About 1 / 5th of the total volume of the aerosol thus produced is applied to the entire surface of a pure wool carpet covering 4 and a half mats. After a period of one day, 100 moth larvae and 200 moth eggs are transplanted. After a period of one week, the cover is examined to see the number of surviving moth larvae. The number of moth larvae surviving is less than 2. When examined after a period of one months, we do not observe newly born mites. Thus the extermination method according to the present invention has a significant effect against the harmful insects of wool.

Example 3

In 80 g of a mixed solvent of isopropanol and n-propanol, 5.0 g of diethylene glycol are dissolved. The solution is placed in an aerosol package per application. A pressurized propellant is added. Therefore, an aerosol is produced.

About 1 / 5th of the total volume of the aerosol thus produced is applied to the entire surface of a completely smudged window (approximately 3 m ² ). The glass immediately becomes perfectly clean.

Example 4

An aerosol is prepared by application following the method of Example 1 and using 8 g of a sodium alkyl higher benzene sulfonate and 2 g of potassium pyrophosphate. About 1/4 of the total volume of the aerosol is applied by spreading thus produced over the entire surface of a mat covering 4 and a half mats and soiled with fatty food.

The treatment does not cause any dispersion of the active agent and lasts a short time (approximately 15 minutes). It results in elimination of tasks.

Claims (9)

1 - Method for the application of the content of an aerosol package, characterized by the steps which consist in conducting said content of a rod towards an applicator element formed on the side wall of said aerosol package and in allowing said content to flow d 'an application face of said applicator element. 2 - The method of claim 1, wherein said content of said aerosol package contains an insecticide or miticide as an active ingredient. 3 - Process according to any one of claims 1 or 2, wherein said content of said aerosol packaging is applied to carpets and floor coverings for the extermination of mites and harmful insecticides from these carpets and floor coverings. 4 - Method according to any one of claims 1 or 2, wherein said insecticide or miticide is applied to treat the roots of the son of carpets and floor coverings. 5 - Aerosol device of the application type, for guiding the content of an aerosol package from a rod to an applicator element formed on the side wall of said package and allowing said content to flow from an application side of said element and adhere to a given surface, this device comprising: an application support disposed in a vertical direction on the external face of said aerosol package, comprising said applicator element fixed in the longitudinal direction on its external surface and a guide chamber for the content of said aerosol solution formed on the internal surface of said applicator element and, a guide inlet communicating with the rod of said aerosol package, connected to said application support and adapted to allow the incoming content to flow from the external surface of said application support. 6 - Aerosol device of the application type according to claim 5, in which said applicator element is made of an absorbent material and the connection of said guide inlet to said application support is made by opposing said guide inlet to an upper lateral face of a guide support inserted in said guide chamber in the middle of the internal surface of said guide chamber and the flow space of said content. 7 - aerosol apparatus of the application type according to any one of claims 5 or 6, wherein said application support formed in the vertical direction on the external face of said aerosol packaging comprises said applicator element, made of an absorbent material and disposed in the longitudinal direction on the external surface of said application support, said guide chamber for said content of said aerosol can formed on the internal surface of said applicator element and in which said guide inlet communicating with said rod of said aerosol can is placed opposite an upper lateral end of said guide support inserted in said guide chamber in the middle of the internal surface of said chamber and -said flow space so as to allow the content introduced via said guide inlet to flow from the external surface of said application support. 8 - aerosol device of the application type according to claim 5, wherein said application support is open on a trough-shaped housing closed at its opposite ends in its longitudinal direction and in which an applicator element made of a material non-absorbent with a flat and smooth application face extending over one of its faces is firmly fixed in a receiving frame. 9 - aerosol device of the application type according to any one of claims. or 8, in which said guide inlet communicating with said rod of said aerosol packaging can open in said trough-shaped receiving frame closed at its opposite ends in its longitudinal direction, in which said applicator element is made of a non-absorbent material and having a flat and smooth application face projecting on one of its sides is fixedly mounted in said receiving frame and in which said applicator element and said frame define a flow space for said content so that the content introduced via said guide inlet can flow from the external surface of the application support.

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