EP2335521B1 - Brosse, en particulier brosse à dents - Google Patents

Brosse, en particulier brosse à dents Download PDF

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Publication number
EP2335521B1
EP2335521B1 EP10011705.0A EP10011705A EP2335521B1 EP 2335521 B1 EP2335521 B1 EP 2335521B1 EP 10011705 A EP10011705 A EP 10011705A EP 2335521 B1 EP2335521 B1 EP 2335521B1
Authority
EP
European Patent Office
Prior art keywords
active substance
toothbrush according
cavity
substance element
toothbrush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10011705.0A
Other languages
German (de)
English (en)
Other versions
EP2335521A1 (fr
Inventor
Peter Gross
Armin Bärtschi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trisa Holding AG
Original Assignee
Trisa Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trisa Holding AG filed Critical Trisa Holding AG
Priority to EP15187837.8A priority Critical patent/EP3000351B1/fr
Priority to EP10011705.0A priority patent/EP2335521B1/fr
Publication of EP2335521A1 publication Critical patent/EP2335521A1/fr
Application granted granted Critical
Publication of EP2335521B1 publication Critical patent/EP2335521B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/0068—Brushes where the reservoir is specifically intended for solid substance that dissolves gradually
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/0003—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water containing only one dose of substance, e.g. single-use toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
    • A46B11/0041—Flexible or deformable reservoirs, e.g. resilient bulbs, compressible tubes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/0062—Brushes where the reservoir is specifically intended for being refilled when empty
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0091—Container, e.g. bag or box with a collection of various devices
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the invention relates to a brush, in particular toothbrush, according to claim 1.
  • a toothbrush of this kind is from the US 1,797,946 known.
  • the toothbrush has a head part with a cleaning structure, a grip part and a neck part, wherein a hollow area with at least one outlet opening for an active substance is located in the head part.
  • the head part comprises at least one hard material and at least one soft material and in the immediate vicinity of the outlet opening bristles or soft elastic elements made of the soft material are arranged.
  • the soft-elastic elements increase the surface near the outlet openings.
  • Disposable toothbrushes which already contain toothpaste in various ways.
  • US 5,346,324 and US 5,909,977 is low-viscosity toothpaste in a reservoir in the grip area and is pushed by a piston in the head area, where it exits through openings in the region of the bristles.
  • the disadvantage of this is the difficult dosage of toothpaste, the need to use very thin toothpaste, the cumbersome handle, the frequent drying and congestion of the fluid channel and the difficult to impossible refilling of the reservoir.
  • toothbrushes are known in which a predetermined amount of toothpaste is in a hollow area in the head area and before cleaning by manual Deformation of the head area is squeezed out.
  • US 1,947,720 is deformed by deforming the head area a slit-like, initially closed opening so that the toothpaste can escape. Multiple use by refilling or exact dosage is not possible.
  • the delivery of toothpaste is also associated with relatively great effort. Show similar examples with toothpaste dispensing by manual squeezing FR 2 583 625 or US 5,865,195 , In the US 5,490,530 the outlet openings can be resealed by a slide. The toothpaste is squeezed out by pressing a button located on the underside of the head and reducing the volume of the toothpaste reservoir.
  • a disposable toothbrush in the bristle area contains an encapsulated dose of liquid dentifrice.
  • the capsule is broken by contact with the teeth.
  • the problem here is beside the restriction to single use, that the detergent can escape even with improper treatment.
  • the invention is therefore an object of the invention to provide a brush, in particular a toothbrush, with an active substance available, which is suitable for multiple use and / or refilling the active substance and allows easy handling and simple dosage of the active substance.
  • an active substance element which consists of a carrier material and an active substance incorporated therein.
  • the carrier material releases the active substance in a controlled manner on contact with water.
  • the carrier material is preferably solid, but may also be a high viscosity paste. It is preferably largely dimensionally stable without contact with water.
  • the cavity is adapted to the shape of the active substance element with a defined external shape.
  • the volume of the hollow region is greater than the volume of the active substance element, in particular by 1-2 times, at most 4 times greater.
  • the Active substance can also protrude from the head to form enough attack surface for the release of active substances. This ensures that the active substance element is well bathed in water during use.
  • the release of the active substance is purely passive by flushing the active substance element with water, manual influence of the brush is not necessary.
  • the brush would therefore already deliver significant active substances, if you would insert them at temperatures of 15 ° C or higher in water.
  • the cleaning movement can additionally support the migration of the active substance through the improved liquid circulation, it is the goal that the brush releases active substances in the context of water even without mechanical action.
  • the dosage can be adjusted and predefined by a suitable choice of the solubility or decomposability of the active substance element or its ability to deliver the active substance and the size of the outlet openings and thus also not dependent on the skill of the user.
  • the brush is at least in the region of the hollow area so flexible that the hollow area during normal use, ie during cleaning, deformed such that water is sucked into the hollow area and pushed out again.
  • the invention exploits a pumping / suction effect made possible by the flexibility of the hollow region with respect to the solvent water. This allows the entry of water into the hollow area and the rinsing of the active substance can be increased without the user having to manipulate the brush beforehand.
  • the hollow region is for this purpose preferably adapted to the shape of the active substance element, that this is at least partially spaced from the inner wall and is thus washed in use of water.
  • the hollow region is advantageously at least partially enclosed by thin-walled delimiting elements with a wall thickness of less than 3 mm, preferably less than 1.5 mm, made of rubber-elastic soft material, in order to generate said pumping action even at the slightest touch.
  • the entire brush head may also have flexible, movable portions, e.g. a flexible brush head front. Due to the flexible deflection of this partial area, the volume of the hollow area is likewise influenced and in turn the pumping / suction effect described above arises.
  • the flexibility of the brush head is formed at the point at which the hollow region occupies the largest proportion of the cross section of the brush head. This has the advantage that only a small proportion of the head cross-section must be made flexible. This can be achieved by means of targeted material weakening, e.g. Film hinge, side tunnel, etc., done in the hard component or by combining the hard and soft component. It is also possible to completely form the flexible zone from soft material.
  • the active substance element is preferably a solid or a highly viscous, dimensionally stable paste, but may also be formed by an encapsulated liquid, pasty or granular substance with a water-soluble coating.
  • a solubility or The decomposability of the active substance element or its coating succeeds in a well-defined dosage up to a uniform release of active substance during a cleaning process.
  • a multiple use of the same active substance element is possible if it is so dimensioned or its solubility or decomposability is chosen so that it survives several typical cleaning operations.
  • the active substances are delivered depending on the purpose before, during or after the cleaning process. The risk of drying or clogging of openings does not exist in this case, since any residues can be rinsed off easily after use.
  • the active substance element comprises a largely dimensionally stable carrier, from which the active substance is washed out, but which retains its original shape.
  • it contains an indicator by which it changes color or fades with the service life or the number of inserts.
  • the active substance element can be refilled by a resealable inlet opening.
  • the brush consists of a head part with a cleaning structure, usually bristles, a neck part and a handle part. All sub-elements may consist of at least one hard and one or more soft components.
  • hard components e.g. Polystyrene (PS), styrene-acrylonitrile (SAN), polyester (PET), polyethylene (PE), polymethylmethacrylate (PMMA), acrylobutadiene-styrene (ABS) etc., preferably polypropylene (PP).
  • the soft component used is a rubber-elastic material such as polyurethane (PUR) or polyethylene (PE), preferably a thermoplastic elastomer (TPE or TPU).
  • Hardenings of less than 70 Shore A, preferably less than 40 Shore A, are used in the brush head.
  • the bristle field is preferably at least partially filled with conventional bristles e.g. made of polyamide (PA) or polyester (PBT) and optionally with rubber-elastic cleaning or massage elements.
  • the conventional bristles have, for example, a cylindrical geometry with a diameter of less than 0.25 mm, preferably between 0.1 mm - 0.2 mm and are combined into bundles.
  • the rubber-elastic massage or cleaning elements usually have larger diameter with the smallest dimensions in the cross section of 0.5 to 5 mm, preferably 0.5 to 2 mm.
  • the hollow area offers at least space for an active substance element, preferably the hollow area offers additional space so that the active substance element can be lapped with water and the active substance can thereby unfold its effect by means of partial or complete dissolution.
  • the volume of the hollow region is maximally four times, more preferably one to two times larger than the size (the volume in original size) of the active substance element.
  • the hollow region has a volume of 5 to 1500 mm 3, preferably 100 to 500 mm 3 .
  • the active substance element can be clamped laterally or vertically in the hollow region.
  • projections or other geometric elements in the soft or / and hard component in the hollow area are preferably used for this purpose. This ensures that the active substance element during the cleaning process are not beaten back and forth within the hollow area can and possibly break apart prematurely.
  • the active substance element can also protrude outwardly through recesses in the boundary of the cavity and can be seen laterally or on the bristle-carrying side from the brush head.
  • the hollow region is preferably generally designed so that the active substance element is stably positioned despite continuous degradation in the hollow region.
  • the hollow region is provided with a flexible element, preferably made of soft material, which exerts a kind of spring action on the active substance element, e.g. an outer wall of the hollow portion is arched by inserting the active substance element to the outside.
  • the active substance element in original size is fixed with a certain bias in the hollow area.
  • the inner shape of the hollow portion follows, with the exception of the above-mentioned projections substantially the geometric shape of the active substance element, preferably with a predefined distance.
  • the hollow region can be designed as a slot into which a plate-shaped or foil-shaped active substance element can be introduced.
  • the active substance element can be introduced in a rod-shaped or cylindrical geometry into a correspondingly shaped hollow region.
  • the hollow region lies in the plan view of the cleaning structure, preferably within the bristle field, provided that conventional bristles are present are. This makes it possible for the hollow region to be produced with a thin wall, but still enough conventional bristles can be anchored around the hollow region with a certain anchoring depth that is technically determined.
  • Cleaning elements made of a soft component are preferably formed directly above the hollow region, which require less head volume or anchoring depth than conventional bristles for anchoring.
  • conventional bristles require the hard component for secure anchoring. Since the hollow area on the bristle-carrying side of the brush head is preferably delimited by a membrane of soft material, it is technically very difficult to anchor conventional bristles in this area.
  • the hollow region is bounded by a wall of hard and / or soft component, but preferably at least in regions by soft component, since in this way the abovementioned flexibility can be achieved in a simple manner.
  • Bristle anchoring advantages are found when the hollow area is in a region adjacent to the brush head, e.g. in the brush neck or in the transition between the brush neck and the brush head, which comes into contact with water.
  • This refinement has the advantage that consideration must not be given to the hollow region within the brush head with respect to the anchoring of the bristles. The fact that the active substance does not escape where it generally has the best effect, ie in the head area, is accepted.
  • the hollow region has at least one outlet opening for the entry of water, for emergence the active substance dissolved in water and for flushing the hollow area after use under the tap.
  • at least one introduction opening for introduction of the active substance element by the user is additionally present.
  • the introduction opening is larger in the open state than an outlet opening.
  • the insertion opening is preferably located on the brush head back and the outlet opening on the brush head front.
  • Alternative design variants show the insertion opening on the brush head side.
  • the outlet openings may alternatively / additionally be applied on the side and / or rear side of the brush head.
  • the insertion opening is preferably reclosable. But it can also serve as an outlet opening and does not complete the hollow area completely sealed.
  • the insertion opening can be formed by means of removable or in the head integrated lid or closure, for example by means of a directly molded on the head of the film hinge.
  • Particularly preferred is a membrane made of soft material with a corresponding opening, for example with one or more crossed slots, which corresponds to the size of the active substance element, as reclosable element.
  • the membrane can simultaneously represent a flexible wall of the hollow area and / or serve as a carrier of cleaning / massage elements.
  • slots other geometric elements can be provided which allow the introduction of the active substance element and prevent its escape as far as possible, for example an expandable hole in the membrane which is smaller than the active substance element.
  • this has a thickness of less than 3 mm, preferably a thickness of 0.7 - 1.5 mm.
  • 2 to 6 slots are preferably used as the introduction opening.
  • the length of the slots for toothbrushes is 3 - 15 mm, preferably around 6 - 10 mm.
  • the insertion opening may have a securing device which prevents or at least impedes the falling out of the active substance element during use.
  • the membrane is formed with slits or a funnel such that the introduction of the active substance takes place with little pressure (for example 10 to 300 g), but falling out by means of e.g. funnel-shaped geometry in the opening area requires more pressure. Less preferred but also possible are additional locking or securing elements.
  • the insertion opening may still be closed during the first use (first opening safeguard or seal).
  • first opening safeguard can be broken by the user, e.g. by cutting thin residual connections within the prefabricated slots.
  • the outlet openings allow a continuous, but limited exit of the active substance dissolved in water.
  • the number of openings and their size (total surface of the outlet opening) and the water solubility of the active substance element or of the carrier material determine the actual exit of the active substance dissolved or dispersed in water. Since the water solubility of the active substance is rather a resulting size, the outlet openings (number and size) of the water solubility of the active substance adapted to determine the range of the active substance during use.
  • the dissolution of the active substance element can also serve as a time indicator for the (total) cleaning time that has been carried out so far.
  • a single outlet opening preferably does not fall below a minimum area of 0.05 mm 2 . Because smaller openings can easily pollute and thus affect the fluid exchange. Moreover, it is advantageous if the user examines the size of the hollow substance still existing active substance element through the outlet openings and possibly decide whether the active substance should be refilled. For these reasons, surfaces of 0.05 to 100 mm 2 are preferably used for the outlet openings, preferably 1 to 20 mm 2 . This ensures accurate dosing and prevents the active substance or fragments of the active substance element from being able to leave the hollow region in an uncontrolled manner.
  • the individual outlet openings on a brush head can have different sizes (areas) in order to weight outlet quantity and outlet location.
  • individual groups of outlet openings are provided at designated locations on the brush head.
  • the exit of the active substances at different points of the bristle field with respect to quantity and location can be controlled.
  • one to five groups (clusters) are formed by outlet openings.
  • These groups of exit openings may also be positioned asymmetrically with respect to the longitudinal axis on the brush head.
  • the different groups of outlet openings are preferably manufactured in one operation from the same material.
  • outlet openings when the outlet openings are embedded in the rubber-elastic material, this is operated from an injection point for all groups, ie the material side, these groups are interconnected.
  • the outlet openings may be designed so that they have geometric elements which increase the surface in the vicinity of the outlet opening in order to keep the active substance as possible in the region of the brush head.
  • a substantially funnel-shaped or at least outwardly opening geometry can be used. This also favors a simple cleaning of the hollow area after use under the tap. Additional cleaning and massage elements in the area of the outlet openings have the same advantage.
  • sponge-like and / or holey soft elements can be placed in the region of the outlet openings, which also contribute to the better retention of the active substance.
  • the outlet openings can be formed in the hard material and / or in the soft material of the brush head. However, they are preferably integrated into the above-described membrane made of soft material. In this case, it preferably has a thickness of less than 3 mm, preferably from 0.7 to 1.5 mm.
  • the hollow region is preferably bounded by membranes of soft material as described above.
  • These membrane (s) are flexible to adapt to the environment (gums, teeth, oral cavity, etc.) during use and to the membrane during cleaning to exert a certain pumping and suction effect on the hollow area. These effects can be enhanced by a domed shape of the membrane.
  • the membrane can form a kind of expandable network structure. As described above, this network structure can have minimum outlet openings of at least 0.05 mm 2 in area.
  • network structures can be installed on all sides of the brush head. These preferably have a convex U-shaped or pan-shaped outer geometry for enlarging the surface and thus for maximizing the cavity.
  • the cross webs of the network have a diameter of 0.1 - 2 mm, preferably 0, 2 - 0.5 mm and made of soft material (eg TPE or PE).
  • cleaning and massage elements made of soft material are preferably formed on the flexible membranes which delimit the hollow region.
  • a part of the brush head with a flexible membrane and this design with cleaning and / or massage elements made of soft material can be advantageously used for brushes which have no hollow area for active substances, but, for. only an empty or no hollow area.
  • the membrane and the cleaning and / or massage elements are manufactured in one operation, in particular by injection molding. It succeeds in the production of a brush with a particularly elastic suspended cleaning / massage structure. Unless specifically related to the hollow area, the following preferred embodiments also apply to brushes without a hollow area, but with a membrane provided with a cleaning / massage structure.
  • cleaning and / or massage elements which are located in the region of the outlet openings, are aligned parallel to the Entformungscardi of the brush head.
  • Fabrication technically complex, but effective in use are cleaning or massage elements, which are aligned at a certain angle, preferably substantially perpendicular to the possibly curved membrane surface.
  • the cleaning or massage elements which are located in the region of the outlet openings, are preferably less long than the conventional bristles in their environment, so that during use in the end of the cleaning or massage elements can form a kind of reservoir for the active substance dissolved in water.
  • the cleaning and massage elements may themselves have outlet openings, which may be e.g. with straw-shaped bristles, lamellae and warts with holes is the case. These have the advantage that they can bring the active substance directly to the site. By capillary action, the active substance can travel a relatively long way in this case.
  • the membrane can deliver or pass active substances even in the submicroscopic range, e.g. through microporosity, semipermeability.
  • the active substance element is preferably a solid which, in use, at least partially dissolves in the water.
  • the active substance element in solid form is in the form of a tablet, pill, a rod-shaped element, plate or foil formed according to the hollow region.
  • a paste or kneadable mass having a dynamic viscosity higher than conventional commercially available pastes (toothpaste) may also be employed.
  • a spatially defined shape can be produced and the active substance stay as long as possible in the hollow area.
  • the paste can harden after introduction into the hollow region in order to deliver the active substance in various applications.
  • the active substance can be easily portioned by the user.
  • the solid is already pre-portioned in the sales packaging.
  • the paste can be simply portioned by the consumer due to the given volume of the hollow area.
  • the active substances can be used together with conventional cleaning agents or independently of these.
  • the brush can generally also be used without active substances with conventional cleaning agents.
  • Suitable carrier materials are, for example, biodegradable substances based on starch or plastics which are not chemically reactive with the active substances.
  • a preferred carrier material is Polyox® from Dow Chemicals, a water-soluble resin based on polyethylene oxide polymers, which is suitable for forming a matrix or a carrier for an active substance and also because of its thermoplastic properties can be processed in a variety of ways, such as cast, sprayed or extruded.
  • both the single use of an active substance element as well as the multiple use is possible.
  • use of the brush consumes an active substance element.
  • the active substance element can be reintroduced before each use or even occasionally used.
  • use of the brush consumes only a portion of the active substance element.
  • the user recognizes when the active substance is used up, and can then replenish the brush by means of a new active substance element.
  • concentration or amount of the active substance is set much lower in the intended single use than in multiple use.
  • the concentration corresponds approximately to the concentration of the active ingredients of conventional pastes.
  • the corresponding concentration is increased by a multiple.
  • the range / duration of use of the active substance element is also influenced by the water solubility and water circulation / openings.
  • the system hollow area, openings and water solubility of the active substance element can be set so that the user can be displayed a certain duration of use (time indicator).
  • time indicator the Characteristics for single use chosen so that the active substance is used up after 3 minutes of cleaning time.
  • the active ingredient is depleted after a typical 3 month use period, indicating that the entire brush should be replaced due to wear.
  • a lettering eg 'Change'
  • the active substance element can be provided with additional recesses, concave or convex elements on the surface.
  • the color of the active substance element is preferably chosen so that it differs significantly from brush head and the user can easily judge the consumption of the active substance.
  • the solubility or decomposability of the active substance and of the carrier material depends on the water temperature used.
  • the user can control the delivery of the amount of active substance by controlling the water temperature. With a temperature increase from 10 ° C to 40 ° C, the delivered amount of active substance increases significantly.
  • the active substance is incorporated in an advantageous development in an effervescent tablet or paste with effervescence as a carrier material. This additional function allows the user to determine during the deployment whether the active substance is already used up or is still present in the hollow area without removing the brush from the mouth.
  • the brush is packaged such that the package unambiguously shows the brush and active substance element to the consumer.
  • the active substance element is placed next to the brush head.
  • the active substance element is preferably provided in a part of the packaging which is independent of the opening of the brush packaging.
  • the active substance element remains hygienically closed until the opening of the intended portion.
  • a first active substance element is preferably already placed in the sales packaging in the hollow region of the brush head.
  • the brush head is placed in the package so that the inlet and outlet openings can be shown.
  • a so-called double blister offers itself, which allows the user to view both brush head sides.
  • only the active substance element can be provided as a replacement (refill).
  • the active substance may be provided in a suitable carrier material in a dispenser for portionwise delivery.
  • the brush head can be introduced in this embodiment variant in the dispenser and the active substance are then donated mechanically through the introduction opening into the hollow area.
  • the active substance and the carrier material in a different physical state than in later use in the Brush head on or to attach.
  • the active substance can, for example, be poured or sprayed into the cavity in liquid form (for example by heating or with a solvent). After curing, the active substance element is formed, which releases the corresponding active ingredients in use with water.
  • the active substance element is preferably introduced into the cavity before attaching the cleaning elements such as bristles etc.
  • Injection of the membrane with any existing cleaning and massage elements can be performed before or after the onset of conventional bristles.
  • the injection points for the membrane and any cleaning or massage elements placed on it should be selected as far as possible within the head or in the neck region of the brush. At most, areas of soft material can be made in the handle of the toothbrush in the same operation with the same material.
  • the cleaning or massage elements which are arranged in the region of the membrane, made with the same material in one operation with the membrane.
  • a soft component with a Shore A hardness of less than 70, preferably less than 40
  • stiffness of the cleaning or massage elements cleaning effect, massage effect
  • the connection of the membranes of soft material to the hard component of the brush head is preferably carried out in multi-component injection molding.
  • a geometry element of 0.1 to 2 mm depth / length is preferably formed on the predominant region of the connection of the membrane to the hard component for better connection of the membrane.
  • the first introduction of the active substance element into the brush head may be provided by the consumer during the first use or during the manufacturing process of the brush.
  • the methods with a two-part brush head in particular by means of AFT, are particularly suitable.
  • the active substance element is placed in the toothbrush head before the bristled AFT plate is indissolubly welded with the toothbrush handle.
  • the AFT process generally lends itself between the bristled AFT plate and the Toothbrush handle to place an additional component or element.
  • Fig. 1-4 show various views of a head portion 10 of a toothbrush according to the invention.
  • a cleaning structure 12 consisting of conventional bristles 14, summarized in bundles, and soft elastic cleaning elements 16 attached. Instead of the conventional bristles 14, in some cases only the anchoring areas 38 of the bristle bundles are indicated.
  • the head region 10 consists of a hard component 30 that is solid (see also FIG Fig. 5-7 ) and in particular the conventional bristles 14 are anchored with a certain anchoring depth.
  • a circular or elliptical recess 31 which is circular or elliptical in plan view and which is covered on the front and rear sides by a flexible wall 28 in the form of an elastic membrane 28 or 26 made of soft material 32.
  • a hollow region 22 is formed within the head region 10.
  • the soft elastic structure 16 is anchored in the front membrane 28.
  • the membrane and the soft elastic structure are formed together in one manufacturing step from the same material from the same injection point.
  • the membrane 26 on the back 20 has two crossed slots, which serve as a reclosable insertion opening 34 for an active substance element 24.
  • the front side membrane 28 has outlet openings 36 through which water can enter the hollow region 22 and enriched with active substance can escape again.
  • the wall region of the hollow region 22 formed of soft material 32 forms a flexible zone 29. Under cleaning pressure, the toothbrush deforms in this zone 29 such that water is sucked into the hollow region 22 and pushed out again.
  • the membranes 26, 28 may also be made of a hard component with a correspondingly small wall thickness in order to provide the necessary flexibility to reach.
  • a soft component has advantages insofar as the anchoring of cleaning elements in a thin hard material layer is problematic in terms of manufacture, but the simultaneous injection of soft elastic elements onto a soft membrane is unproblematic.
  • a combination of hard and soft materials may form the membrane.
  • the flexible elements of the membrane and cleaning elements are made of soft material.
  • the hard component forms only structuring, stabilizing elements of the membrane or merely serves as a production-related material compound.
  • the hollow portion 22 is adapted to the shape of an active substance element 24 that this is at least partially spaced from the inner wall 23.
  • an active substance element 24 For secure retention of the active substance element 24, inwardly projecting projections or edges 40 are formed out of the flexible membranes 26, 28 ( Fig. 5-7 ). Due to the flexibility of the membranes 26, 28, the active substance element 24 is well positioned even as the resolution progresses.
  • outlet openings 36 are each between the soft-elastic cleaning elements 16 within the front-side membrane 28.
  • the membrane surface thus has a net-like perforated structure.
  • Fig. 8, 9 show another example of a hard and soft component 30, 32 existing toothbrush.
  • the soft component 32 forms a flexible zone 29 which interconnects the two otherwise separate parts 10 ', 10 "of the hard component brush head 10.
  • the entire brush head front 10' may deflect relative to the brush head rear 10".
  • the hollow region 22 is bounded on the front and rear side and additionally also laterally by thin material layers (membranes 26, 28) made of soft component 32 and in the longitudinal direction by the hard component 30.
  • a compound of hard component 30 can additionally be guided within the soft component 32, which makes it possible to produce the two brush head parts 10 ', 10 "from hard component 30 in one working step, preferably this connection is made very thin so that the flexibility is not adversely affected
  • conventional bristles 14 are anchored in the hard component 30, while the soft component 32 is provided with soft-elastic cleaning elements 16.
  • the insertion opening 34 is as in FIG Fig. 1-7 designed as a cross slot.
  • FIG. 10 shows a substantially Fig. 1-7 corresponding example, in which the flexible zone 29 with the hollow portion 22 is not centered within the Borstenfeldes, but rather the neck region 52 faces. This has the advantage that the most heavily loaded zone in the brush head front can be formed from conventional bristles.
  • the flexible zone 29 formed of soft material 32 occupies the entire brush tip and is designed to be substantially circular in plan view. In a concentric arrangement, it carries here from inside to outside soft elastic cleaning elements 16, outlet openings 36 and conventional bristles 14 (or their anchoring areas). Toward the neck region 52, a conventional bristle field embedded in the hard component 30 adjoins. The outlet openings 36 are so large that the underlying hollow area 22 is visible.
  • the part of the brush head formed from the hard component 30 is in one piece. However, it has recesses in such a way that a flexible zone 29 connected to the rear side 20 with three regions (clusters) 44 is formed by outlet openings 36. These are located at the top and on the sides of the head region 10 in a respective outwardly curved flexible wall / membrane 28, preferably made of soft material 32.
  • the remaining area of the head part 10 is bristled on the front side 18 with conventional bristles 14; on the back there is again a cross-shaped insertion opening 34 as in Fig. 5-7 ,
  • Fig. 16-21 show examples of different shapes of the flexible zone 29 in a toothbrush according to the invention in front and rear view ( Fig. 16-19 ) or only in Front view ( Fig. 20, 21 ). On the back is in all examples, in turn, a cross-shaped insertion opening 34 as in Fig. 5-7 (only partially shown).
  • the flexible zone 29 has three laterally arranged, gill-like regions 46 (or clusters 44) with lamellar cleaning / massage elements 16 and outlet openings 36 arranged therebetween.
  • the regions 46 are connected to one another at the rear via a material bridge 32 (see FIG Fig. 17 ).
  • the lamellae / fish gills are less pronounced and only two lateral clusters 44 are present.
  • Fig. 20 shows a modification thereof with asymmetrically curved geometry.
  • the outlet openings 36 are uniformly distributed over the lateral edge of the head portion 10 and each knob-like surrounded by soft material, so that also here by the knobs during cleaning results in a massage effect.
  • Fig. 22, 23 show a brush in front and rear view, in which the outlet openings 36 are located on the back facing away from the bristle 20 and thus the active substance is released mainly at the back 20.
  • the back 20 is largely made of hard material 30 which is broken like a net and the view of the hollow portion 22 within the brush head 10 releases.
  • the hollow portion 22 extends substantially over the entire surface of the head portion 10. The sufficient flexibility of the wall of the hollow portion 22 is achieved by a correspondingly thin material thickness and through the openings or outlet openings 36.
  • a portion of the hollow portion 22 is back covered by a membrane 26 made of soft material 32, in which star-shaped arranged, serving as an insertion opening 34 slots are located.
  • the brush head 10 consists of two parts (tip 10 'and neck-side region 10 ") of a hard component 30 joined together by a flexible zone 29 of soft material 32 or a combination of hard and soft material
  • the hollow region 22 is delimited towards the front side 18 by three webs 48 made of soft material 32. Between the webs 48 there are two outlet openings 36 with a total width of approximately half the head width.
  • the underside of the hollow region 22 is made entirely of soft material 32 or a combination of hard and soft material, soft elastic cleaning elements 16 are arranged on the webs 48, and conventional bristles 14 are anchored on the hard regions at the tip and in the neck region the bottom 66 of the hollow portion 22 is an ellips Enförmigen insertion opening 34 for the active substance element 24 is formed.
  • This has essentially the shape of a cylinder with elliptical cross-section and rounded edges.
  • the active substance element 24 is clamped between the webs and the bottom 66. Laterally, however, it is spaced from the inner wall of the hollow portion 22, so that it is washed around there and in the region of the outlet openings 36 of water.
  • the webs 48 may also consist of the hard component 30 and the Hinge tip as well as the neck area; the flexibility is ensured in this case by a correspondingly thin wall thickness of the webs 48.
  • Fig. 25-27 show variations of the example Fig. 24 also with a substantially two-part head portion 10 of a hard component 30 and the parts 10 ', 10 "connecting flexible zone 29 of soft component 32 or a combination of hard and soft component, in which the hollow portion 22 accommodated for receiving the active substance element 24 is at FIGS. 25 and 26
  • the hollow portion 22 and the active substance element 24 themselves are cylindrical with a circular cross section.
  • the introduction opening 34 is likewise circular and may have a smaller diameter than the hollow area 22 itself, so that the active substance element 24 in the hollow area 22 can be at least partially washed around.
  • the hollow region 22 is substantially surrounded by soft material 32 in its radial direction with the exception of the outlet openings 36 in the front-side membrane 28.
  • Fig. 25-27 show variations of the example Fig. 24 also with a substantially two-part head portion 10 of a hard component 30 and the parts 10 ', 10 "connecting flexible zone 29 of soft component 32 or a combination of hard and soft component, in which the hollow
  • Fig. 27 shows an analogous example with an elongated in the longitudinal direction of the brush head elastic zone 29 in which a substantially cuboid hollow portion 22 is formed. This is connected to a plate or foil-shaped active substance element 24 adapted.
  • the plate or sheet-shaped hollow portion 22 can be mounted as backpack-shaped structure on the brush head back.
  • the active substance element 24 has a thickness of 0.01 to 5.0 mm, preferably 0.05 to 1.0 mm.
  • the hollow region 22 on the rear side 20 of the brush head is covered by a flexible membrane 26 of soft material 32 and otherwise formed within the hard component 30.
  • the outlet openings 36 are formed on the membrane 26 within knob-shaped or funnel-like elevations, which can simultaneously act as cleaning or massage elements 16, in particular for the palate and tongue.
  • the existing of the hard component 30 front 18 can thus be bristled conventionally above the hollow portion 22.
  • a combination of this embodiment with a previously shown flexible membrane on the front of the brush head is also conceivable.
  • Fig. 29 shows a toothbrush, wherein the hollow portion 22 is formed by a cage-like, adapted to a spherical or ellipsoidal shape of the active substance element thickening in the neck region 52.
  • This one has a lot of Outlet openings 36 through which the hollow portion 22 is visible.
  • the boundary of the hollow region may be formed of hard and / or soft component, resulting in the latter case, a damping zone in the neck region 52. The flexibility of this zone favors the previously discussed pumping action around the active substance element.
  • Fig. 30-33 show schematically different production methods for brushes according to the invention. Of course, these manufacturing methods can be used for all design variants shown.
  • the toothbrush is made of two parts consisting of hard and / or soft component 30 by injection molding, on the one hand the bristle side upper half of the brush head and on the other hand the back cover 54.
  • the upper half is a recess for the active substance element 24th formed, which is later closed with the lid 54 to form the hollow portion 22.
  • the outlet openings 36 and optionally cleaning elements 16 are formed of soft component 32.
  • Conventional bristles are anchored laterally from the cleaning elements 16 by conventional plugging or In Mold Tufting (IMT).
  • IMT In Mold Tufting
  • the lid 54 may include a membrane of soft component, in which the outlet openings are formed in knob-like elevations. Lid 54 and remaining brush head are then connected to the inclusion of a flat active substance element 24 releasably (snapping, sliding, locking, etc.) or non-detachable (gluing, welding, positive locking, etc.).
  • the toothbrush is also made of two parts of a hard and / or soft component by injection molding.
  • the brush head back half of the brush head has a plate-shaped recess which forms a cavity 22 in the assembled state with a support plate 56.
  • the support plate is made including openings which are closed in a further injection molding step with soft component 32 to form a membrane 26 and possibly soft elastic cleaning elements 16 of soft component.
  • the conventional bristles 14 are then anchored in the support plate 56.
  • the support plate 56 can also be bristled in the Anchor Free Tufting process, which has the advantage that the support plate can be made thinner.
  • the support plate is then releasably (snap, slide, clicks, etc.) or non-detachable (gluing, welding, positive locking, etc.) connected to the rest of the toothbrush, wherein an active substance element 24 is enclosed in the cavity 22.
  • Fig. 32 shows a combination of the examples FIGS. 30 and 31 with a three-part (annular body, support plate 56 and back cover 54) existing brush head.
  • Fig. 33 shows a further example in which the active substance in the manufacture of the toothbrush is inserted or injected into a recess in the hard component 30 and overmolded with the soft component 32.
  • a cavity 22 is formed with a flexible wall in the form of a thin membrane 26 of soft component 32.
  • the flexibility of the wall of the hollow portion 22 results from the choice of a wall material with a certain elasticity, in particular by having at least one membrane of soft material 32, and / or by the overall existing bending elasticity of the existing hard and / or soft material Brush. As long as the sufficient contact with water or the adequate dissolution of the active substance is ensured, it is sufficient if the pumping / suction effect or volume change of the hollow region is only slightly or not at all due to the plastering pressure.
  • FIGS. 34 and 35 show a self-explanatory package 58 for a toothbrush with active substance, in which in addition to a matched to the brush shape recess 60, a detachable area, each with an active substance element 24 is present. The user therefore immediately recognizes which product it is.
  • the embodiment variants shown above can of course also be used in electric toothbrushes.
  • the mechanical movement or vibration of at least a part of the brush head additionally promotes the fluid exchange into and out of the hollow area. If the brush head is subdivided into a movable and a non-movable brush head segment, the hollow region, within the variants described above, is preferably accommodated in the non-movable segment.
  • Fig. 36 shows a household brush, also with a head, neck and handle area 10, 52, 62.
  • head area 10 there is a hollow region 22 which can be reclosed on the side facing away from the cleaning structure 12 by a flap 64 and can receive an active substance element 24.
  • flap 64 In the flap 64 are the outlet openings for the dissolved active substance.
  • a solid soap is preferably used as the active substance element. All previously shown design variants can be adopted analogously for the dishwashing brush. The dimensions given are to be adjusted in proportion to the dimensions of the cleaning brush head.
  • a brush with a flexible membrane in the head part which carries cleaning and / or massaging elements, even without an underlying hollow area or without an introduced in the hollow area active substance element advantages, in particular because of the flexible suspension of the cleaning and / or massaging elements.
  • All the examples shown can be modified accordingly, for example by no hollow area or a hollow area not communicating with the outside world being provided.

Claims (23)

  1. Brosse à dents avec une partie de tête (10) ayant une structure de nettoyage (12) comprenant en particulier des poils (14), avec une partie de manche (62) et une partie d'encolure (52), dans laquelle un espace creux (22) avec au moins une ouverture de sortie (36) pour une substance active est localisé dans la partie de tête (10), la partie de tête (10) présente au moins un composant dur (30) et au moins un composant souple (32), et des éléments élastiques souples (16) fabriqués à partir du composant souple (32) sont disposés à proximité directe de l'ouverture de sortie (36), lesquels agrandissent la surface à la proximité de l'ouverture de sortie (36), caractérisée en ce que la partie de tête (10) a une moitié du côté arrière de la tête de brosse avec un creux en forme d'assiette, qui dans un état assemblé avec une plaque support (56) forme l'espace creux (22), la plaque support (56) présente au moins une ouverture, qui est fermée avec le composant souple (32) pour former une membrane (26) et des éléments élastiques souples (16), l'ouverture de sortie (36) est fabriquée dans le composant souple (32) et la plaque support (56) est garnie de poils.
  2. Brosse à dents selon la revendication 1, caractérisée en ce que les éléments élastiques souples (16) dans la zone de l'ouverture de sortie (36) ont une géométrie en forme de poil, de lobe, de lamelle ou de mamelon.
  3. Brosse à dents selon la revendication 1 ou 2, caractérisée en ce que les ouvertures de sortie (36) dans la zone de la surface de la brosse à dents sont façonnées en s'élargissant en particulier en forme d'entonnoir.
  4. Brosse à dents selon l'une des revendications 1 à 3, caractérisée en ce que les éléments élastiques souples (16) sont façonnés comme des éléments de nettoyage ou de massage, de préférence pour le palais ou la langue.
  5. Brosse à dents selon l'une des revendications 1 à 4, caractérisée en ce que les éléments élastiques souples (16) sont moins longs que les poils conventionnels (14) dans leur voisinage.
  6. Brosse à dents selon l'une des revendications 1 à 5, caractérisée en ce que les éléments élastiques souples (16) façonnés de préférence comme des lobes de massage, des lamelles de massage ou des bosses de massage, sont utilisés pour masser les gencives, la cavité buccale ou la langue.
  7. Brosse à dents selon l'une des revendications 1 à 6, caractérisée en ce que les éléments élastiques souples (16) eux-mêmes ont des ouvertures de sortie (36).
  8. Brosse à dents selon la revendication 7, caractérisée en ce que les éléments élastiques souples (16) sont façonnés comme des poils en forme de paille, de lamelles ou de mamelons avec des trous.
  9. Brosse à dents selon l'une des revendications 1 à 8, caractérisée en ce que la brosse à dents est flexible au moins dans la zone de l'espace creux (22).
  10. Brosse à dents selon l'une des revendications 1 à 9, caractérisée en ce que l'espace creux (22) est au moins partiellement délimité par une paroi flexible (26, 28).
  11. Brosse à dents selon la revendication 10, caractérisée en ce que la paroi flexible (26, 28) est constituée du composant souple (32).
  12. Brosse à dents selon la revendication 10 ou 11, caractérisée en ce que la forme et le matériau de la membrane (26) sont adaptés l'un à l'autre d'une façon telle qu'un élément à substance active (24) inséré dans l'espace creux (22) est, dans son état original et aussi dans son état partiellement dissous, fixé par prétension dans l'espace creux (22), en particulier en étant pressé de façon élastique contre la paroi intérieure de l'espace creux (22) respectivement contre d'éventuelles saillies (40) sur la paroi intérieure.
  13. Brosse à dents selon l'une des revendications 1 à 12, caractérisée en ce que le composant souple a une dureté Shore A de moins de 70, de préférence de moins de 40.
  14. Brosse à dents selon l'une des revendications 1 à 13, caractérisée en ce que des poils conventionnels (14) fabriqués avec du polyamide ou du polyester sont ancrés sur la plaque support (56).
  15. Brosse à dents selon l'une des revendications 1 à 14, caractérisée en ce que des propriétés mécaniques des éléments élastiques souples (16), par exemple les dimensions, la flexibilité, le matériau, sont adaptés suivant l'effet qui doit être obtenu avec la substance active.
  16. Brosse à dents selon l'une des revendications 1 à 15, caractérisée en ce que l'espace creux (22) est adapté à la forme d'un élément à substance active (24) présentant une forme extérieure définie, et en ce que le volume de l'espace creux (22) est plus grand que le volume de l'élément à substance active (24).
  17. Brosse à dents selon la revendication 16, caractérisée en ce que, sur sa paroi intérieure, l'espace creux (22) présente des saillies (40) ou d'autres éléments géométriques qui positionnent dans l'espace creux (22) l'élément à substance active (24) inséré, de préférence en le coinçant.
  18. Brosse à dents selon la revendication 16 ou 17, caractérisée en ce que l'élément à substance active (24) est un corps solide ou une pâte hautement visqueuse, dimensionnellement stable.
  19. Brosse à dents selon l'une des revendications 16 à 18, caractérisée en ce que l'élément à substance active (24) contient un indicateur, tel que l'élément à substance active (24) change sa couleur ou perd sa couleur avec la durée d'utilisation.
  20. Brosse à dents selon l'une des revendications 16 à 19, caractérisée en ce que l'élément à substance active (24) est produit par durcissement d'une substance qui est introduite, en particulier injectée par moulage par injection, sous forme liquide dans l'espace creux (22).
  21. Brosse à dents selon l'une des revendications 16 à 20, caractérisée en ce que l'élément à substance active (24) comprend un porteur pour la substance active, qui libère la substance active lors du contact avec l'eau.
  22. Brosse à dents selon la revendication 21, caractérisée en ce que le porteur, fabriqué de préférence avec un matériau physiologiquement sûr et biodégradable, en particulier à base d'amidon, est soluble dans l'eau et est de préférence traité avec la technique de moulage par injection.
  23. Brosse à dents selon la revendication 21 ou 22, caractérisée en ce que le porteur est fabriqué avec un matériau insoluble dans l'eau, par exemple un polymère, qui est de préférence traité avec la technique de moulage par injection.
EP10011705.0A 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents Not-in-force EP2335521B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP15187837.8A EP3000351B1 (fr) 2004-09-22 2005-09-07 Procédé de fabrication d'une brosse à dents et brosse à dents
EP10011705.0A EP2335521B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP20040022614 EP1639913B1 (fr) 2004-09-22 2004-09-22 Brosse, notamment brosse à dents et procédé de fabrication
EP05785195.8A EP1796507B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents, et procédé de production de cette brosse
EP10011705.0A EP2335521B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents

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EP05785195.8 Division 2005-09-07
EP05785195.8A Division EP1796507B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents, et procédé de production de cette brosse

Related Child Applications (2)

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EP15187837.8A Division-Into EP3000351B1 (fr) 2004-09-22 2005-09-07 Procédé de fabrication d'une brosse à dents et brosse à dents
EP15187837.8A Division EP3000351B1 (fr) 2004-09-22 2005-09-07 Procédé de fabrication d'une brosse à dents et brosse à dents

Publications (2)

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EP2335521A1 EP2335521A1 (fr) 2011-06-22
EP2335521B1 true EP2335521B1 (fr) 2015-12-16

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EP20040022614 Active EP1639913B1 (fr) 2004-09-22 2004-09-22 Brosse, notamment brosse à dents et procédé de fabrication
EP05785195.8A Not-in-force EP1796507B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents, et procédé de production de cette brosse
EP10011705.0A Not-in-force EP2335521B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents
EP15187837.8A Active EP3000351B1 (fr) 2004-09-22 2005-09-07 Procédé de fabrication d'une brosse à dents et brosse à dents

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EP20040022614 Active EP1639913B1 (fr) 2004-09-22 2004-09-22 Brosse, notamment brosse à dents et procédé de fabrication
EP05785195.8A Not-in-force EP1796507B1 (fr) 2004-09-22 2005-09-07 Brosse, en particulier brosse à dents, et procédé de production de cette brosse

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US (6) US8109686B2 (fr)
EP (4) EP1639913B1 (fr)
AT (1) ATE534314T1 (fr)
WO (1) WO2006032367A1 (fr)

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US20190357666A1 (en) 2019-11-28
US8408833B2 (en) 2013-04-02
EP1639913B1 (fr) 2011-11-23
EP1639913A1 (fr) 2006-03-29
US8109686B2 (en) 2012-02-07
EP1796507B1 (fr) 2013-10-23
EP3000351B1 (fr) 2020-02-12
US20130212823A1 (en) 2013-08-22
US20120121312A1 (en) 2012-05-17
US10856647B2 (en) 2020-12-08
WO2006032367A1 (fr) 2006-03-30
US20080014010A1 (en) 2008-01-17
US20170079420A1 (en) 2017-03-23
US20140348569A1 (en) 2014-11-27
EP1796507A1 (fr) 2007-06-20
US8851781B2 (en) 2014-10-07
ATE534314T1 (de) 2011-12-15
US9538837B2 (en) 2017-01-10
EP2335521A1 (fr) 2011-06-22
EP3000351A1 (fr) 2016-03-30
US10390606B2 (en) 2019-08-27

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