Apparatus for storing and dispensing flowable compositions

Abstract

An apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state.

Description

Background Technology

[0001] In dentistry and orthodontics, a large number of manual operations are often performed continuously and in a coordinated manner. Individual patients may typically require different amounts of dental compositions. Small amounts of liquid can be stored and dispensed in containers in the form of blister packs. In the thermoformed portion of the pack, which is closed by a removable film, for example, two recesses separated from each other are formed. The first recess can hold a small amount of liquid, and a brush can be placed in the other recess. Examples of some prior art packaging include the following.

[0002] Wo-96 / 03326 discloses a disposable container having recesses for storing a medicine and an applicator. Both recesses are protected from contamination by a peelable covering film. In one embodiment, the medicine is transferred to the recess containing the applicator by pressing the recess containing the medicine, thereby wetting the applicator.

[0003] U.S. Patent 3,835,834 discloses a treatment kit having two recesses in its main body, one for accommodating a care substance and the other for accommodating a swab. A sealing film protects the main body containing the care substance and swab from contamination.

[0004] European Patent Application No. 0 895 943 discloses an apparatus for storing and dispensing a flowable substance, comprising a container consisting of two membranes connected together to form two chambers for receiving the substance and a separate bag for removing a mixture of the two substances. The gap between one chamber and the bag has a selectively opening transition zone. To activate the apparatus, pressure is first applied to one chamber, thereby transferring the substance therein to the second chamber via the transition zone. This creates a positive pressure in the second chamber, causing one of the membranes forming the chamber to expand. To prevent the mixture from flowing back into the first chamber, the apparatus must bend in the region between the two chambers.

[0005] U.S. Patent 7,320,398 discloses a device specifically designed for storing and dispensing dental materials. The device includes a container comprising a first membrane and a second membrane forming at least one first chamber for receiving a first substance and a recess separated from the chamber for removing the first substance. A partition region between the recess and the first chamber is provided with a channel region that can be selectively opened.

[0006] EP Patent No. 1240087 discloses a device for storing and distributing free-flowing substances.

[0007] Examples of certain dental or orthodontic products available from the 3M Company in St. Paul, Minnesota include 3M... TM Adper TM Prompt TM L-Pop Adhesive, 3M TM Transbond TM L-Pop Adhesive, 3M TM Clinpro L-pop Blister, 3M TM Unitek TM Transbond TM and Transbond TM Plus SelfEtching Primer, 3M TM L-Pop Prime and Bond Adhesive, 3M TM Adper TM L-Pop Easy BondSelf-Etch Adhesive, 3M TM L-Pop Single Bond Universal Adhesive, 3M TM L-PopScotchbond TM Universal and Universal TM Plus Adhesive Unit Doses. Summary of the Invention

[0008] This disclosure relates to an apparatus for storing and dispensing flowable compositions and a method for manufacturing the same.

[0009] In one example, this disclosure relates to an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone, and a second chamber, the first chamber being for containing the flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, the material is held in the first chamber, and wherein in the active state, a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the material is thereby dispensed into the second chamber through the transition zone.

[0010] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone, and a second chamber, wherein the first chamber contains the flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the transition zone can be selectively opened by pressure on the first chamber, thereby allowing fluid communication between the first chamber, the transition zone, and the second chamber.

[0011] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a second chamber and a transition zone, the first chamber containing the flowable dental composition; and an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, a first volume of the dental composition is retained in the first chamber, and wherein in the active state, a second volume of the dental composition in the first chamber is smaller than the first volume.

[0012] In yet another example, this disclosure relates to an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; and a light-interrupting portion for protecting the flowable dental composition from premature curing.

[0013] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; wherein the second concave surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth convex surface aligned with the first concave surface.

[0014] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone, and a second chamber, the first chamber being for containing a flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, the material is held in the first chamber, and wherein in the active state, a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the material is thereby dispensed into the second chamber through the transition zone.

[0015] In yet another example, this disclosure relates to an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone, and a second chamber, wherein the first chamber contains the flowable dental composition; an applicator held within the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the transition zone can be selectively opened by pressure on the first chamber, thereby allowing fluid communication between the first chamber, the transition zone, and the second chamber.

[0016] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a second chamber and a transition zone, the first chamber containing the flowable dental composition; and an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, a first volume of the dental composition is retained in the first chamber, and wherein in the active state, a second volume of the dental composition in the first chamber is smaller than the first volume.

[0017] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; and a light-interrupting portion for protecting the flowable dental composition from premature curing.

[0018] In another example, this disclosure relates to an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for receiving a flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; wherein the second concave surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth convex surface aligned with the first concave surface.

[0019] In yet another example, this disclosure relates to a method of manufacturing an apparatus for storing and dispensing a flowable dental or orthodontic composition. The method includes: providing a first layer; cold-forming the first layer to partially form a first chamber and a second chamber; filling the first chamber with the flowable dental or orthodontic composition; providing a second layer; cold-forming the second layer to partially form the first and second chambers; sealing the second layer to the first layer in surface contact, opening the first and second chambers to form a dispensing area, and forming a selectively openable transition area between the first and second chambers and within the dispensing area; dye-cutting the apparatus to a desired shape; and partially cutting the first and second layers by cuts for light interruption portions. Attached Figure Description

[0020] Figure 1 This is a top view schematic diagram of an exemplary device for storing and dispensing a flowable dental composition;

[0021] Figure 2 It is the section AA along the line. Figure 1 A schematic cross-sectional view of the device;

[0022] Figures 3A to 3C It is the section AA along the line. Figure 1 A schematic cross-sectional view of the apparatus shows the steps of dispensing a flowable composition from the first chamber of the apparatus into the second chamber;

[0023] Figure 4 It is an enlarged schematic cross-sectional view of the first and second layers of the device;

[0024] Figure 5 It is an enlarged schematic cross-sectional view including the first and second layers of the exemplary light interruption portion;

[0025] Figure 6 yes Figure 5 An enlarged schematic cross-sectional view of the device;

[0026] Figure 7 This is a top view of an intermediate manufacturing step of the apparatus 10 of the present invention;

[0027] Figure 8 These are photographs illustrating the differences between prior art devices and the device of the present invention;

[0028] Figures 9A to 9C This is a top view schematic diagram of an additional exemplary device for storing and dispensing a flowable dental composition;

[0029] Figure 10 This is a schematic cross-sectional view of an apparatus for storing and dispensing flowable dental compositions;

[0030] Figure 11 This is a cross-sectional view of yet another exemplary device for storing and dispensing flowable dental compositions; and

[0031] Figures 12A to 12D yes Figure 11 A schematic cross-sectional view of the apparatus shows the steps of dispensing a flowable composition from the first chamber of the apparatus into the second chamber. Detailed Implementation

[0032] 3M's popular L-Pop TM The Adhesive product line offers single-step, unit-dose adhesives or primers for both dental and orthodontic use. Its unique packaging separates the contents into two compartments during storage until the dental professional is ready to perform etching, priming, and bonding in a single step by mixing the contents together.

[0033] This invention focuses on the sustainability or environmental aspects of L-pop-like designs. In the newly redesigned embodiments, the material used for the layers or laminating foil is reduced by up to 50% compared to conventional L-pop products. For example, this invention reduces the amount of laminating foil required to manufacture the device from 0.24g to 0.12g. Figure 8 The dimensional differences between 3M's prior art L-pop design (shown as the two items on the left) and the new design of this invention (shown as the two embodiments on the right) are illustrated and will be discussed further below. Furthermore, manufacturing output can be nearly doubled while using almost the same amount of material. Figure 7 This aspect will be further illustrated below. Furthermore, the geometry of the packaging of the present invention has been redesigned to reduce the likelihood of lamination or wrinkling in the liquid storage chamber, thereby maximizing the amount of flowable dental or orthodontic composition stored and then dispensed from the chamber or compartment. Figure 3C As shown, the lack of layered folds also minimizes unused contents remaining in the chamber. Finally, the invention includes a unique light-interrupting feature that prevents premature aging (chemical degradation) or premature curing of stored dental materials.

[0034] The exemplary device 10 of the present invention is in Figure 1 and Figure 2 As shown in the figures. In these figures, the device is in an inactive state. For example, this is how to store the device before use. Figures 3A to 3C The device 10 of the present invention in an active state is shown. For example, the device 10 in use is shown.

[0035] The device 10 includes a first layer 12 and a second layer 14. Each layer 12, 14 is preferably a laminated foil made of both a plastic layer and a metal foil. The two layers 12, 14 are sealed to each other in a peelable manner, forming a first chamber 16 and a second chamber 32. The first chamber is formed by a portion of the first layer 12 having a first concave surface 25 and a portion of the second layer 14 having a second concave surface 24 opposite to the first concave surface 25. Each concave surface is viewed in a side view relative to a horizontal axis AA extending along the length of the device 10, or alternatively in a view from the composition 30 filled into the chamber. However, describing the form of the layers 12, 14 as “concave” or “convex” does not preclude the possibility of the layers altering their curvature characteristics, particularly in the edge regions.

[0036] A flowable composition 30, preferably a flowable dental or orthodontic composition 30, is contained in a first chamber 16 during the inactive state of the device. Examples of flowable dental compositions 30 may include adhesives, flowable composites, cementitious agents, liner materials, sealants, caries indicators, desensitizing agents, and caries-preventing liquids. Examples of flowable orthodontic compositions also include adhesives. Layers 12 and 14 are formed to accommodate the composition 30 in the first chamber 16. In some embodiments, composition 30 may be exposed to ambient light entering the first chamber 16 via a light path between layers 12 and 14. In some embodiments, ambient light may enter the chamber 16 when layers 12 and 14 also include a transparent or translucent sealing layer; such a sealing layer may form a light guide or light path. In other words, light propagates within the light guide by total internal reflection until it reaches the chamber 16 and the composition 30 contained therein. Since the dental composition 30 may cure prematurely while the device 10 is stored, the device preferably includes a light interruption portion 17. The light interruption portion 17 can take many forms. One exemplary form is the cut portion 80, hereinafter referred to as... Figure 5 and Figure 6 To describe in more detail.

[0037] The two layers 12, 14 also form a transition zone that can be selectively opened by having peeling capability in a predetermined fracture zone located between a first chamber 16 and a second chamber 32 formed between the two layers 12, 14. The two layers 12, 14 also form a dispensing area 34 that holds the applicator 19. The applicator includes an application head 20 mounted on the end of a handle 22. The handle 22 may include an optional gripping aid 33. The head 20 is held within the second chamber 32. The second chamber 32 is shaped to have a relatively flat base and a convex covering portion that covers the head 20.

[0038] like Figures 3A to 3C As shown, the device 10 is activated by applying external pressure to the first chamber 16. The user can activate the device from its inactive state by applying external pressure via the user's index finger 50 and thumb 52. In this respect, the device is activated by the pressure applied to the first chamber 16, thereby transferring the composition 30 located in the first chamber 16 to the second chamber 32 via a transition zone 18, which is selectively opened by fluid pressure and the flow of the composition 30 between the first layer 12 and the second layer 14 in that zone. Thus, the selectively openable transition zone 18 can be considered to represent a predetermined break point at which the first chamber 16 opens and the composition 30 flows through the transition zone 18 and into the second chamber 32. The transition zone 18 is designed such that, in the stored or inactive state, it forms a sealed closure between the two chambers 16 and 32 and relative to the zone 34 through which the composition 30 is dispensed.

[0039] Chambers 16 and 32 are preferably formed so that they are circular (circular or elliptical, etc.), but may also be angular (square, rectangular, or triangular, etc., with rounded or sharp edges) if appropriate. Preferably, the first chamber 16 is hermetically sealed along its entire perimeter. By applying pressure to the first chamber 16, the activation of the device 10 can be visually observed.

[0040] The dispensing area 34 is preferably shaped to open to one side, i.e., in a bag-like form, and is configured to allow the dispensing instrument or applicator 19 to be introduced in an inactive or stored state. The applicator 19 is preferably designed to resemble a brush or swab. Alternatively, a pipette, cotton swab, sponge, scraper, or nozzle sealed into the dispensing area 34 may be used as an applicating instrument or applicator.

[0041] When the device 10 is active and the dental composition flows into the second chamber 32, the applicator 19 located in the dispensing zone 34 is wetted and subsequently available for application of the released dental composition 30. The applicator 19 can also be moved toward the first chamber 16 to release the selectively open transition zone 18. This also results in the head 20 of the applicator 19 being wetted. If repeated application of the released material is required, the applicator 19 can be reinserted into the bag dispensing zone 34. The dispensing zone 34 or the applicator 19 is preferably designed such that when reinserted, the handle 22 of the applicator 19 is not substantially wetted. This can occur, for example, through a channel-shaped configuration of the dispensing zone 34 and a matching configuration of the applicator handle 22. Similarly, the second layer 14 can be constructed in a disc-like or well-like manner in the dispensing zone, into which material is delivered to repeatedly wet the applicator 19 without wetting the handle 22 by extruding it into the second chamber in a manner similar to a tube.

[0042] If the outward-facing opening has a correspondingly small diameter, for example in the form of a sleeve, the dispensing area 34 itself can also be used as an application device.

[0043] Preferably, the two layers 12, 14 are cold-formed to provide the design as described above. For example, cold forming may include placing the layers 12, 14 containing the metal foil in a mold and extruding the two layers together into a molded body formed by the mold, while the metal in the mold is at room temperature or below the recrystallization temperature of the metal foil, to form the desired shape or structure within the layers.

[0044] Except for the areas forming chambers 16 and 32, layers 12 and 14 are preferably connected to each other in face-to-face contact. Alternatively, the connection between the first layer 12 and the second layer 14 can be achieved, for example, by heat sealing, adhesive bonding, and / or ultrasonic welding using an ultrasonic generator. The first layer 12 and the second layer 14 are adhered together in a non-active state in the transition zone 18 and around the first chamber 16 and the second chamber 26. In this state, the adhesion between the first layer 12 and the second layer 14 is reduced in the transition zone 18 compared to other areas surrounding the first chamber 16 and the second chamber 32.

[0045] When the device 10 is inactive, the first cold-formed inner surface 24 of the first chamber 16 is concave, and the second cold-formed inner surface 25 of the first chamber 16 is concave. When the device 10 is active, the first cold-formed inner surface 24 of the first chamber 16 remains concave when viewed from the inside, and the second cold-formed surface 25 is deformed into a convex shape. Alternatively, both layers 12, 14 may be circular, or between them may be partially convex and partially concave, but always in near-complete surface contact with each other. In any case, the flowable dental composition 30 is thus dispensed from the first chamber 16 through the transition zone 18. Because surfaces 24 and 25 have matching surface areas, the complete discharge of the composition 30 from the chamber 16 is easily facilitated when surface 25 is deformed convexly to match and engage with surface 24 held in the concave configuration. This is possible because both surfaces 24, 25 are pre-cold-formed. An example of this phenomenon is... Figure 3C middle.

[0046] Figure 4 and Figure 5 An exemplary device 10 having multiple layers 12, 14 is shown. Both the first layer 12 and the second layer 14 have three layers. The second layer 14 has a top layer 56, and the first layer 12 has a bottom layer 66. Layers 56 and 66 can both be made of a transparent material. Examples of suitable materials for the transparent material in layers 56 and 66 include polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyamide (PA), polyvinyl chloride (PVC), ethylene-vinyl alcohol (EVA), and PVF (polyvinyl fluoride). The second layer 14 includes a foil layer 58 adjacent to the top layer 56. The first layer 12 has a foil layer 64. The intermediate foil layers 58 and 64 are metal foils, preferably aluminum. The first layer 12 also includes a film or sealing layer 62. Examples of suitable films or sealing layers 60 and 62 include polymer films and / or adhesive films. In some embodiments, polymer sealing layers 60 and 62 are transparent or translucent. In those embodiments where one or both of the sealing layers 60 and 62 are transparent or translucent, light-guiding may occur between the foil layers 58 and 64 when layers 58 and 64 are at least partially reflective, such as in the case of aluminum.

[0047] The first layer also includes a film or sealing layer 60. The second layer 14 also includes a film or sealing layer 62. Examples of suitable films or sealing layers 60 and 62 include polymer layers and / or adhesive layers. In some embodiments, polymer sealing layers 60 and 62 are transparent or translucent. In those embodiments where one or both of sealing layers 60 and 62 are transparent or translucent, light conduction may occur between foil layers 58, 64 when layers 58 and 64 are at least partially reflective, such as in the case of metal foils (such as aluminum). Examples of suitable sealing layers include polyethylene (PE), polypropylene (PP), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET), polyamide (PA), polybutylene terephthalate (PBT), polyvinyl chloride (PVC), ethylene-vinyl alcohol (EVA), and PVF (polyvinyl fluoride).

[0048] As described above, the device preferably includes an optical interruption section 17. Figure 5 An example of such a light interruption portion 17 is shown (as shown, the light interruption portion 17 includes a cutout portion 80. Alternatively, the cutout 80 may also begin on opposite sides starting from layer 12). The cutout portion 80 serves as a potential light guide for any ambient light or as an interruption of direct light from outside the device 10. Light is guided through film layers 60, 62 and internally reflected between metal foil layers 58 and 64. In a preferred embodiment, as... Figure 1 As shown, the cut portion 80 can be shaped to partially surround the first chamber 16. This light-interrupting portion 17 helps prevent any premature curing or aging of dental compositions stored in the first chamber 16, particularly those that are light-cured (e.g., light-cured by UV curing). Additionally, layers 12, 14 may include layers with sufficient diffusion impermeability. Other embodiments of the light-interrupting portion 17 include carbon black material in layers 60 and / or 62. In some other embodiments, the light-interrupting portion 17 may include aluminum layers 58 and / or 64 coated with carbon black. In some embodiments, the light-interrupting portion 17 may include doped layers 60 and 62 with carbon black or other additives to interrupt internal reflection of light between foil layers 58 and 64.

[0049] Figure 6A schematic cross-section of an exemplary light-interrupting portion 17 used with light source 202 is shown. Ambient light, schematically shown by light source 202, is positioned relative to device 10 such that light emitted by the light source enters layers 12, 14 and is transmitted within the device via total internal reflection. Light will not enter through the top or bottom of device 10 due to the metal foil (such as aluminum) or opaque layers 58, 64 (which reflect light outward from the device). Ambient light emitted by the light source is represented by external rays, and then by individual rays 206, 207, 208 transmitted via total internal reflection. In this case, the light-interrupting portion 17, the cutout portion 80, serves to prevent the propagation of internal reflection of ray 208. Additionally, the process of creating the cutout portion 80 may also produce deformation (not shown) in one or both of layers 58 and 64; such deformation in the form of slight bending and folding itself can provide the primary function of the light-interrupting portion 17. Thus, the composition 30 is protected from such light. Figure 1 As shown, the cut portion 80 surrounds the first chamber 16 containing the composition 30 to provide such protection.

[0050] The multilayer structure of the first layer 12 and the second layer 14 can be achieved by lamination, calendering, or lamination of individual layers including single layers. If appropriate, it can also be achieved by vapor deposition, for example using metals such as aluminum. Furthermore, depending on the application area and desired deformability, layers 12 and 14 are stretched or unstretched before the device 10 is started. These layers can be selected from plastic layers, metal foils, and ceramic sheets. Suitable plastic layers are, for example, PE, PP, PTFE, PET, PA, PBT, PVC, EVA, and PVF (polyvinyl fluoride). Suitable metal foils are, for example, aluminum (Al), tin (Sn), gold (Au), silver (Ag), iron (Fe), and lead (Pb) based materials such as steel. Suitable ceramic sheets should be understood to mean layers having, for example, layers containing SiOx.

[0051] The volume of the first chamber 16 is typically in the range of 5 μl to 500 μl, preferably in the range of 10 μl to 250 μl. The volume of the second chamber 32 is preferably less than or equal to the volume of the first chamber, at least before the device is started, and is in the range of 3 μl to 500 μl, preferably in the range of 5 μl to 250 μl. The diameter of the first chamber 16 is, for example, 1 mm to 25 mm, preferably in the range of 5 mm to 15 mm. The second chamber 32 has a diameter, for example, 1 mm to 25 mm, preferably in the range of 5 mm to 15 mm.

[0052] Device 10 can be manufactured, for example, by: a) providing a first layer 12; b) cold-forming the first layer 12 to partially form the first chamber 16 and the second chamber 32; c) filling the first chamber 16 with a flowable dental composition 30; d) providing a second layer 14; e) cold-forming the second layer 14 to partially form the first chamber 16 and the second chamber 32; f) sealing the second layer 14 to the first layer 12 in a largely surface-contact manner, thereby freeing the chambers 16, 32 and forming a transition zone 18 that can be selectively opened between the two chambers 16 and 32 and in the dispensing area 34; g) dye-cutting the outer contour or desired shape of the device; and h) cutting these layers through a cut 80 for the light-interrupting portion 17. The sealing step can be performed in two stages. The first stage seals the two layers 12, 14 together, but they remain peelable. The second stage seals the two layers 12, 14 together such that they are not peelable in all areas except the transition zone 18 and the open chambers 16, 32.

[0053] Figure 7 The intermediate steps in the above manufacturing process are shown. Figure 7 In this process, steps a) through f) have been completed. To achieve the goal of manufacturing a more sustainable and environmentally friendly device, devices 10a through 10d are arranged as shown in the figure to optimize material usage. This arrangement helps increase manufacturing output.

[0054] Figure 8 This demonstrates existing L-Pop designs, particularly those from 3M. TM Scotchbond TM A side-by-side comparison of Universal L-Pop adhesive (two images on the left, front and back) and the device 10 of the present invention (two images on the right, front and back). Figure 8 This is a photograph showing the differences between a prior art device (all on the left are prior art devices) and the device of the present invention without the light interruption portion 17.

[0055] The device 10 is shown to have different shapes for the first chamber 16. In this case, the first chamber 16 is elliptical or circular. However, the first chamber 16 can be any desired shape.

[0056] Other exemplary devices 100 of the present invention are Figures 9A to 9C , Figure 10 and Figure 11 As shown in the figures. In these figures, device 100 is in an inactive state. For example, this is how device 100 is stored before use. Figures 12A to 12D One of the devices of the present invention 100e in an active state is shown. For example, the device 100e in use is shown.

[0057] Devices 100a, 100b, 100c, 100d, and 100e are very similar to device 10 shown in the previous figures, except that each device includes an optional flow barrier 36 in the dispensing area 34. The flow barrier 36 helps prevent excess flowable dental composition 30 from accidentally splashing out of the dispensing area 34 during activation of device 100 or when the applicator 22 pulls the brush head 20 out of the second chamber 32. Instead, the flow barrier allows some excess composition 30 to be wiped away from the soaked brush head 20, thus allowing the user to apply composition 30 in a more controlled manner and leaving unnecessary composition 30 within device 100. The flow barrier 36 also improves the fit between the brush head 20 and handle 22 within the dispensing area 34 and the second chamber 30 to help prevent the applicator 19 from accidentally falling out of device 100.

[0058] Similar to the device 10 described above, devices 100a to 100e include a first layer 12 and a second layer 14. Each layer 12, 14 is preferably a laminated foil made of both a plastic layer and a metal foil. The two layers 12, 14 are sealed to each other in a peelable manner, forming a first chamber 16 and a second chamber 32. The first chamber is formed by a portion of the first layer 12 having a first concave surface 25 and a portion of the second layer 14 having a second concave surface 24 opposite to the first concave surface 25. Each concave surface is viewed in a side view relative to a horizontal axis AA extending along the length of the device 10, or alternatively in a view from the composition 30 filled into the chamber. However, describing the form of the layers 12, 14 as “concave” or “convex” does not preclude the possibility of the layer altering its curvature characteristics, particularly in the edge regions.

[0059] Layers 12 and 14 are formed to accommodate the composition 30 in the first chamber 16. The two layers 12 and 14 also form a transition zone 18, which can be selectively opened by having a peeling capability in a predetermined fracture zone located between the first chamber 16 and the second chamber 32 formed between the two layers 12 and 14. The two layers 12 and 14 also form a dispensing zone 34. The dispensing zone 34 is formed by flow barriers 36, which are areas where the two layers 12 and 14 are sealed, thereby forming a bag therebetween to retain the shaft 32 of the applicator 22.

[0060] exist Figures 9A to 9C In the implementation scheme shown, the allocation area 34 can take various forms. Figure 9A In this embodiment, the distribution region 34 in device 100a includes a first flow barrier 36a and a second flow barrier 36b. In this embodiment, the flow barriers 36a and 36b are constructed with opposite sinusoidal waves. Figure 9B In the device 100b, the distribution area has flow barriers 36c and 36d in an aligned sine wave configuration. Figure 9CA device 100c with a distribution region 34 is shown, which has flow barriers 36e and 36f in opposite sinusoidal configurations, which are stretched to have fewer peaks and valleys.

[0061] Figure 10 Another implementation scheme for allocation area 34 is shown. Figure 10 The dispensing zone 34 includes a curved first membrane 12 and a curved second membrane 14, instead of having a relatively flat base for the first membrane 12 as shown in the previous figures. The curved flow barrier is aligned perpendicular to the axis of the applicator 19.

[0062] Figure 11 An alternative device 100, very similar to the aforementioned device, is shown, but the first membrane 12 in this device 100e is not completely flat, as shown in FIG3. Instead, the first membrane in device 100e is looser and concave, thus forming a more symmetrical second chamber 30.

[0063] like Figures 12A to 12D As shown, the device 100e is activated by applying external pressure to the first chamber 16. The user can activate the device from its inactive state by applying external pressure via the user's index finger 50 and thumb 52. In this respect, the device is activated by the pressure applied to the first chamber 16, thereby transferring the composition 30 located in the first chamber 16 to the second chamber 32 via a transition zone 18, which is selectively opened by fluid pressure and the flow of the composition 30 between the first layer 12 and the second layer 14 in that zone. Thus, the selectively openable transition zone 18 can be considered to represent a predetermined break point at which the first chamber 16 opens and the composition 30 flows through the transition zone 18 and into the second chamber 32. The transition zone 18 is designed such that, in the stored or inactive state, it forms a sealed closure between the two chambers 16, 32 and relative to the zone 34 through which the composition 30 is dispensed.

[0064] Chambers 16 and 32 are preferably formed so that they are circular (circular or elliptical, etc.), but may also be angular (square, rectangular, or triangular, etc., with rounded or sharp edges) if appropriate. Preferably, the first chamber 16 is hermetically sealed along its entire perimeter. By applying pressure to the first chamber 16, the activation of the device 10 can be visually observed.

[0065] The dispensing area 34 is preferably shaped to open to one side, i.e., in a bag-like form, and is configured to allow the dispensing instrument or applicator 19 to be introduced in an inactive or stored state. The applicator 19 is preferably designed to resemble a brush or swab. Alternatively, a pipette, cotton swab, sponge, scraper, or nozzle sealed into the dispensing area 34 may be used as an applicating instrument or applicator.

[0066] When the device 10 is active and the dental composition flows into the second chamber 32, the applicator 19 located in the dispensing zone 34 is wetted and subsequently available for application of the released dental composition 30. The applicator 19 can also be moved toward the first chamber 16 to release the selectively open transition zone 18. This also results in the head 20 of the applicator 19 being wetted. If repeated application of the released material is required, the applicator 19 can be reinserted into the bag dispensing zone 34. The dispensing zone 34 or the applicator 19 is preferably designed such that when reinserted, the handle 22 of the applicator 19 is not substantially wetted. This can occur, for example, through a channel-shaped configuration of the dispensing zone 34 and a matching configuration of the applicator handle 22. Similarly, the second layer 14 can be constructed in a disc-like or well-like manner in the dispensing zone, into which material is delivered to repeatedly wet the applicator 19 without wetting the handle 22 by extruding it into the second chamber in a manner similar to a tube.

[0067] Preferably, the two layers 12, 14 are cold-formed to provide the design as described above. For example, cold forming may include placing the layers 12, 14 containing the metal foil in a mold and extruding the two layers together into a molded body formed by the mold, while the metal in the mold is at room temperature or below the recrystallization temperature of the metal foil, to form the desired shape or structure within the layers.

[0068] When the device 10 is inactive, the first cold-formed inner surface 24 of the first chamber 16 is concave, and the second cold-formed inner surface 25 of the first chamber 16 is concave. Similarly, in the inactive state, both the inner surfaces 24 and 25 of the second chamber 30 are concave. When the device 10 is active, the first cold-formed inner surface 24 of the first chamber 16 remains concave when viewed from the inside, and the second cold-formed surface 25 is deformed into a convex shape. Alternatively, both layers 12, 14 may be circular, or between them may be partially convex and partially concave, but always in near-complete surface contact with each other. In any case, the flowable dental composition 30 is thus dispensed from the first chamber 16 through the transition zone 18. By having matching surface areas, the complete discharge of the composition 30 from the chamber 16 is easily facilitated when the surface 25 is deformed convexly to match and engage with the surface 24 held in the concave configuration. This is possible because both surfaces 24, 25 are pre-cold-formed. An example of this phenomenon is... Figure 12C middle.

[0069] Continuing, after the composition has been completely discharged from the second chamber 30 through the transition zone 34 and the applicator 19 has been withdrawn from the device 100e, the first cold-formed inner surface 24 of the second chamber 30 remains concave when viewed from the inside, and the second cold-formed surface 25 of the second chamber 30 is deformed into a convex shape. Alternatively, both layers 12, 14 may be circular, or between them may be partially convex and partially concave, but always in near-complete surface contact with each other. The complete discharge of the composition 30 from the chamber 30 is easily facilitated by the matching surface areas of surfaces 24 and 25, when surface 25 is deformed convexly to match and engage with surface 24 held in the concave configuration. This is possible because both surfaces 24, 25 are pre-cold-formed. An example of this phenomenon is... Figure 12D The construction of the cold-formed foil further contributes to the sustainability of the device of the present invention and helps to reduce the overall manufacturing cost.

[0070] Although both dental and orthodontic compositions for use in device 10 have been discussed above, other flowable compositions are also possible, such as fragrances, lotions, lubricants, oils, coatings, and permanent adhesives.

[0071] Various modifications and alterations to this disclosure will become apparent to those skilled in the art without departing from its scope and spirit. It should be understood that this disclosure is not intended to be unduly limited to the exemplary embodiments, aspects, and examples shown herein, and such embodiments, aspects, and examples are presented by way of example only. The scope of this disclosure is intended to be limited only by the claims set forth herein.

[0072] Exemplary aspects

[0073] Aspect 1 is an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state the material is held in the first chamber, and wherein in the active state a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the material is thereby dispensed into the second chamber through the transition zone.

[0074] Aspect 2 is the apparatus described in aspect 1, wherein the first concave surface and the second concave surface are cold-formed.

[0075] Aspect 3 is the apparatus described in aspects 1 to 3, and further includes an optical interruption portion.

[0076] Aspect 4 is the apparatus described in aspect 3, wherein the first layer and the second layer include a first transparent layer, a second metal foil layer and a third sealing layer.

[0077] Aspect 5 is the device described in aspect 4, wherein the light interruption portion includes a cutout portion that passes through the first layer and a portion of the second layer.

[0078] Aspect 6 is the apparatus described in aspect 5, wherein one of the third sealing layers comprises carbon black.

[0079] Aspect 7 is the device described in aspects 2 to 6, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface is deformed into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

[0080] Aspect 8 is the apparatus described in aspects 2 to 7, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

[0081] Aspect 9 is the apparatus described in aspects 2 to 8, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

[0082] Aspect 10 is the apparatus described in aspects 1 to 9, wherein the first chamber is hermetically sealed along its entire periphery.

[0083] Aspect 11 is the apparatus described in aspects 1 to 10, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

[0084] Aspect 12 is the apparatus described in aspects 1 to 11, wherein the first layer and the second layer are adhered together by a heat seal.

[0085] Aspect 13 is the apparatus described in aspects 1 to 12, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

[0086] Aspect 14 is the apparatus described in aspect 13, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other areas surrounding the first chamber and the second chamber.

[0087] Aspect 15 is the apparatus described in aspects 1 to 14, wherein the brush head of the applicator is located in the second chamber.

[0088] Aspect 16 is the apparatus described in aspects 1 to 15, wherein the brush head of the applicator enters the transition zone during the active state.

[0089] Aspect 17 is the device described in aspects 1 to 16, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

[0090] Aspect 18 is an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, wherein the first chamber contains the flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the transition zone can be selectively opened by pressure on the first chamber, thereby allowing fluid communication between the first chamber, the transition zone and the second chamber.

[0091] Aspect 19 is the apparatus described in aspect 18, wherein the first concave surface and the second concave surface are cold-formed.

[0092] Aspect 20 is the apparatus described in aspects 18 and 19, and further includes an optical interruption portion.

[0093] Aspect 21 is the apparatus described in aspect 20, wherein the first layer and the second layer include a first transparent layer, a second metal foil layer and a third sealing layer.

[0094] Aspect 22 is the device described in aspect 21, wherein the light interruption portion includes a cutout portion that passes through a portion of the first layer and the second layer.

[0095] Aspect 23 is the apparatus described in aspect 22, wherein the third sealing layer comprises carbon black.

[0096] Aspect 24 is the device described in aspects 19 to 23, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface is deformed into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

[0097] Aspect 25 is the apparatus described in aspects 19 to 24, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

[0098] Aspect 26 is the apparatus described in aspects 19 to 25, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

[0099] Aspect 27 is the apparatus described in aspects 18 to 26, wherein the first chamber is hermetically sealed along its entire periphery.

[0100] Aspect 28 is the apparatus described in aspects 18 to 27, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

[0101] Aspect 29 is the apparatus described in aspects 18 to 28, wherein the first layer and the second layer are adhered together by a heat seal.

[0102] Aspect 30 is the apparatus described in aspects 18 to 29, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

[0103] Aspect 31 is the apparatus described in aspect 30, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other areas surrounding the first chamber and the second chamber.

[0104] Aspect 32 is the apparatus described in aspects 18 to 31, wherein the brush head of the applicator is located in the second chamber.

[0105] Aspect 33 is the apparatus described in aspects 18 to 32, wherein the brush head of the applicator enters the transition zone during the active state.

[0106] Aspect 34 is the device described in aspects 18 to 33, wherein the dental composition is a cement, adhesive or fluoride treatment agent.

[0107] Aspect 35 is an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising:

[0108] A first layer and a second layer, wherein the first layer and the second layer form a first chamber, a second chamber and a transition zone, the first chamber being for containing a flowable dental composition; and an applicator, the applicator being held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the device includes an inactive state and an active state, wherein in the inactive state, a first volume of the dental composition is held in the first chamber, and wherein in the active state, a second volume of the dental composition in the first chamber is smaller than the first volume.

[0109] Aspect 36 is the device described in aspect 35, wherein the second volume is 10% smaller than the first volume of the dental composition in the chamber.

[0110] Aspect 37 is the apparatus described in aspects 35 and 36, wherein the first concave surface and the second concave surface are cold-formed.

[0111] Aspect 38 is the apparatus described in aspects 35 to 37, and further includes an optical interruption portion.

[0112] Aspect 39 is the apparatus described in aspect 38, wherein the first layer and the second layer include a first transparent layer, a second metal foil layer and a third sealing layer.

[0113] Aspect 40 is the device described in aspect 39, wherein the light interruption portion includes a cutout portion that passes through a portion of the first layer and the second layer.

[0114] Aspect 41 is the apparatus described in aspect 40, wherein one of the third sealing layers comprises carbon black.

[0115] Aspect 42 is the device described in aspects 37 to 41, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface is deformed into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

[0116] Aspect 43 is the apparatus described in aspects 37 to 42, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

[0117] Aspect 44 is the apparatus described in aspects 37 to 43, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

[0118] Aspect 45 is the apparatus described in aspects 35 to 44, wherein the first chamber is hermetically sealed along its entire periphery.

[0119] Aspect 46 is the apparatus described in aspects 35 to 45, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

[0120] Aspect 47 is the apparatus described in aspects 35 to 46, wherein the first layer and the second layer are adhered together by a heat seal.

[0121] Aspect 48 is the apparatus described in aspects 35 to 47, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

[0122] Aspect 49 is the apparatus described in aspect 48, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other areas surrounding the first chamber and the second chamber.

[0123] Aspect 50 is the apparatus described in aspects 35 to 49, wherein the brush head of the applicator is located in the second chamber.

[0124] Aspect 51 is the apparatus described in aspects 35 to 50, wherein the brush head of the applicator enters the transition zone during the active state.

[0125] Aspect 52 is the device described in aspects 35 to 51, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

[0126] Aspect 53 is an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; and a light-interrupting portion for protecting the flowable dental composition from premature curing.

[0127] Aspect 54 is the apparatus described in aspect 53, and further includes an optical interruption portion.

[0128] Aspect 55 is the apparatus described in aspect 54, wherein the first layer and the second layer include a first transparent layer, a second aluminum layer and a third sealing layer.

[0129] Aspect 56 is the device described in aspect 55, wherein the light interruption portion includes a cutout portion that passes through a portion of the first layer and the second layer.

[0130] Aspect 57 is the apparatus described in aspect 56, wherein the third sealing layer comprises carbon black.

[0131] Aspect 58 is the device described in aspects 53 to 57, wherein the first layer and the second layer comprise metal, and wherein the metal is fused together under high heat and serves as the light interruption portion.

[0132] Aspect 59 is the apparatus described in aspects 53 to 57, wherein the first chamber has a first concave surface and a second concave surface.

[0133] Aspect 60 is the apparatus described in aspects 53 to 59, wherein the first concave surface and the second concave surface are cold-formed.

[0134] Aspect 61 is the apparatus described in aspects 53 to 60, wherein the apparatus includes an inactive state and an active state, wherein when in the inactive state, a substance is held in the chamber, and wherein when in the active state, a portion of the second convex surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the substance is thereby dispensed into the second chamber through the transition zone.

[0135] Aspect 62 is the device described in aspects 55 to 61, wherein when the device is inactive, and when the device is active, the first convex surface remains concave and the second cold-formed surface deforms from concave to convex, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

[0136] Aspect 63 is the apparatus described in aspects 55 to 62, wherein a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

[0137] Aspect 64 is the apparatus described in aspects 55 to 63, wherein when the apparatus is in an active state, the first surface remains concave without significant wrinkles, and the second surface deforms into a convex surface without significant wrinkles.

[0138] Aspect 65 is the apparatus described in aspects 55 to 64, wherein the first chamber is hermetically sealed along its entire periphery.

[0139] Aspect 66 is the apparatus described in aspects 55 to 65, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

[0140] Aspect 67 is the apparatus described in aspects 55 to 66, wherein the first layer and the second layer are adhered together by a heat seal.

[0141] Aspect 68 is the apparatus described in aspects 55 to 67, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

[0142] Aspect 69 is the apparatus described in aspect 68, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other areas surrounding the first chamber and the second chamber.

[0143] Aspect 70 is the apparatus described in aspects 66 to 69, wherein the brush head of the applicator is located in the second chamber.

[0144] Aspect 71 is the apparatus described in aspects 66 to 70, wherein the brush head of the applicator enters the transition zone during the active state.

[0145] Aspect 72 is the device described in aspects 66 to 71, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

[0146] Aspect 73 is an apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing the flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; wherein the second concave surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth convex surface aligned with the first concave surface.

[0147] Aspect 74 is the apparatus described in aspect 73, wherein the apparatus includes an inactive state and an active state, wherein when in the inactive state, a substance is held in the chamber, and wherein when in the active state, a portion of the second concave surface is substantially irreversibly deformed in response to pressure applied to the first chamber, and the substance is thereby dispensed into the second chamber through the transition zone.

[0148] Aspect 75 is the apparatus described in aspects 73 to 74, wherein the first concave surface and the second concave surface are cold-formed.

[0149] Aspect 76 is the apparatus described in aspects 73 to 75, and further includes an optical interruption portion.

[0150] Aspect 77 is the apparatus described in aspect 76, wherein the first layer and the second layer include a first transparent layer, a second aluminum layer and a third sealing layer.

[0151] Aspect 78 is the device described in aspects 66 to 77, wherein the light interruption portion includes a cutout portion that passes through the first layer and a portion of the second layer.

[0152] Aspect 79 is the apparatus described in aspect 78, wherein one of the third sealing layers comprises carbon black.

[0153] Aspect 80 is the device described in aspects 75 to 79, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface is deformed into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

[0154] Aspect 81 is the apparatus described in aspects 75 to 80, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

[0155] Aspect 82 is the apparatus described in aspects 75 to 81, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

[0156] Aspect 83 is the apparatus described in aspects 73 to 82, wherein the first chamber is hermetically sealed along its entire periphery.

[0157] Aspect 84 is the apparatus described in aspects 73 to 83, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

[0158] Aspect 85 is the apparatus described in aspects 73 to 84, wherein the first layer and the second layer are adhered together by a heat seal.

[0159] Aspect 86 is the apparatus described in aspects 73 to 85, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

[0160] Aspect 87 is the apparatus described in aspect 86, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other areas surrounding the first chamber and the second chamber.

[0161] Aspect 88 is the apparatus described in aspects 73 to 87, wherein the brush head of the applicator is located in the second chamber.

[0162] Aspect 89 is the apparatus described in aspects 73 to 88, wherein the brush head of the applicator enters the transition zone during the active state.

[0163] Aspect 90 is the device described in aspects 73 to 89, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

[0164] Aspect 91 is an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing a flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state the material is held in the first chamber, and wherein in the active state a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the material is thereby dispensed into the second chamber through the transition zone.

[0165] Aspect 92 is an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, wherein the first chamber contains a flowable dental composition; an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the transition zone can be selectively opened by pressure on the first chamber, thereby allowing fluid communication between the first chamber, the transition zone and the second chamber.

[0166] Aspect 93 is an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a second chamber and a transition zone, the first chamber containing the flowable dental composition; and an applicator held in the second chamber; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, a first volume of the dental composition is retained in the first chamber, and wherein in the active state, a second volume of the dental composition in the first chamber is smaller than the first volume.

[0167] Aspect 94 is an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing a flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; and a light-interrupting portion for protecting the flowable dental composition from premature curing.

[0168] Aspect 95 is an apparatus for storing and dispensing a flowable orthodontic composition, the apparatus comprising: a first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being for containing a flowable dental composition; wherein the first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; an applicator held in the second chamber; wherein the second concave surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth convex surface aligned with the first concave surface.

[0169] Aspect 96 is a method of manufacturing an apparatus for storing and dispensing a flowable dental or orthodontic composition, the method comprising: providing a first layer; cold-forming the first layer to partially form a first chamber and a second chamber; filling the first chamber with the flowable dental or orthodontic composition; providing a second layer; cold-forming the second layer to partially form the first chamber and the second chamber; sealing the second layer to the first layer in a surface-contact manner to open the first chamber and the second chamber, forming a dispensing area, and forming a selectively openable transition area between the first chamber and the second chamber and in the dispensing area; dye-cutting the apparatus into a desired shape; and partially cutting the first layer and the second layer by means of cuts for light interruption portions.

[0170] Aspect 97 is the apparatus described in aspects 1 to 95, further comprising a distribution area formed between the first layer and the second layer, wherein the distribution area includes a first flow barrier and a second flow barrier.

[0171] Aspect 98 is the apparatus described in aspect 97, wherein the first flow barrier and the second flow barrier are configured as waveforms.

[0172] Aspect 99 is the apparatus described in aspects 1 to 95, and further includes a dispensing region, wherein when in the active state, a portion of the second surface deforms substantially irreversibly in response to pressure applied to the second chamber, and the substance is thereby dispensed from the second chamber through the dispensing region.

Claims

1. An apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: A first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being used to contain a flowable dental composition; The applicator is held in the second chamber; The first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; The device includes an inactive state and an active state, wherein in the inactive state, the substance is held in the first chamber, and wherein in the active state, a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the substance is thereby dispensed into the second chamber through the transition zone. The device also includes an optical interruption section; The first and second layers include a first transparent layer, a second metal foil layer, and a third sealing layer; and The light interruption portion includes a cutout portion that passes through a portion of the first layer and a portion of the second layer.

2. The apparatus of claim 1, wherein the first concave surface and the second concave surface are cold-formed.

3. The apparatus of claim 1, wherein one of the third sealing layers comprises carbon black.

4. The device according to claim 2, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface deforms into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

5. The apparatus of claim 2, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

6. The apparatus of claim 2, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

7. The apparatus of claim 1, wherein the first chamber is hermetically sealed along its entire periphery.

8. The apparatus of claim 1, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

9. The apparatus of claim 1, wherein the first layer and the second layer are adhered together by a heat seal.

10. The apparatus of claim 1, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

11. The apparatus of claim 10, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other regions surrounding the first chamber and the second chamber.

12. The apparatus of claim 1, wherein the brush head of the applicator is located in the second chamber.

13. The apparatus of claim 1, wherein the brush head of the applicator enters the transition zone during the active state.

14. The device according to claim 1, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

15. The apparatus of claim 1, further comprising a distribution region formed between the first layer and the second layer, wherein the distribution region includes a first flow barrier and a second flow barrier.

16. The apparatus of claim 15, wherein the first flow barrier and the second flow barrier are configured as waveforms.

17. The apparatus of claim 1, further comprising a dispensing region, wherein, when in the active state, a portion of the second surface deforms substantially irreversibly in response to pressure applied to the second chamber, and the substance is thereby dispensed from the second chamber through the dispensing region.

18. An apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: A first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, wherein the first chamber contains a flowable dental composition; The applicator is held in the second chamber; The first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; The transition zone can be selectively opened by pressure on the first chamber, thereby allowing fluid communication between the first chamber, the transition zone, and the second chamber; The device also includes an optical interruption section; The first layer and the second layer include a first transparent layer, a second metal foil layer and a third sealing layer; The light interruption portion includes a cutout portion that passes through a portion of the first layer and a portion of the second layer.

19. The apparatus of claim 18, wherein the first concave surface and the second concave surface are cold-formed.

20. The apparatus of claim 18, wherein the third sealing layer comprises carbon black.

21. The device of claim 19, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface deforms into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

22. The apparatus of claim 19, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

23. The apparatus of claim 19, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

24. The apparatus of claim 18, wherein the first chamber is hermetically sealed along its entire periphery.

25. The apparatus of claim 18, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

26. The apparatus of claim 18, wherein the first layer and the second layer are adhered together by a heat seal.

27. The apparatus of claim 18, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

28. The apparatus of claim 27, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other regions surrounding the first chamber and the second chamber.

29. The apparatus of claim 18, wherein the brush head of the applicator is located in the second chamber.

30. The apparatus of claim 18, wherein the brush head of the applicator enters the transition zone during the active state.

31. The device of claim 18, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

32. An apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: A first layer and a second layer, wherein the first layer and the second layer form a first chamber, a second chamber and a transition zone, the first chamber containing a flowable dental composition; and The applicator is held in the second chamber; The first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; The device includes an inactive state and an active state, wherein when in the inactive state, a first volume of the dental composition is retained in the first chamber, and wherein when in the active state, a second volume of the dental composition in the first chamber is smaller than the first volume; The device also includes an optical interruption section; The first layer and the second layer include a first transparent layer, a second metal foil layer and a third sealing layer; The light interruption portion includes a cutout portion that passes through a portion of the first layer and a portion of the second layer.

33. The device of claim 32, wherein the second volume is 10% smaller than the first volume of the dental composition in the chamber.

34. The apparatus of claim 32, wherein the first concave surface and the second concave surface are cold-formed.

35. The apparatus of claim 32, wherein one of the third sealing layers comprises carbon black.

36. The device of claim 34, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface deforms into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

37. The apparatus of claim 34, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

38. The apparatus of claim 34, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

39. The apparatus of claim 32, wherein the first chamber is hermetically sealed along its entire periphery.

40. The apparatus of claim 32, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

41. The apparatus of claim 32, wherein the first layer and the second layer are adhered together by a heat seal.

42. The apparatus of claim 29, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

43. The apparatus of claim 42, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other regions surrounding the first chamber and the second chamber.

44. The apparatus of claim 32, wherein the brush head of the applicator is located in the second chamber.

45. The apparatus of claim 32, wherein the brush head of the applicator enters the transition zone during the active state.

46. ​​The device of claim 32, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

47. An apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: A first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being used to contain a flowable dental composition; The first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; The applicator is held in the second chamber; and A light-interrupting portion, wherein the light-interrupting portion is used to protect the flowable dental composition from premature curing; The first layer and the second layer include a first transparent layer, a second aluminum layer and a third sealing layer; The light interruption portion includes a cutout portion that passes through a portion of the first layer and a portion of the second layer.

48. The apparatus of claim 47, wherein the third sealing layer comprises carbon black.

49. The apparatus of claim 47, wherein the first layer and the second layer comprise metal, and wherein the metal is fused together under high heat and serves as the light interruption portion.

50. The apparatus of claim 47, wherein the first chamber has a first concave surface and a second concave surface.

51. The apparatus of claim 47, wherein the first concave surface and the second concave surface are cold-formed.

52. The apparatus of claim 47, wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, the substance is held in the chamber, and wherein in the active state, a portion of the second concave surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the substance is thereby dispensed into the second chamber through the transition zone.

53. The device of claim 52, wherein when the device is in an active state, the first concave surface remains concave and the second cold-formed surface deforms from concave to convex, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

54. The apparatus of claim 47, wherein a portion of the second surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

55. The apparatus of claim 47, wherein when the apparatus is in an active state, the first surface remains concave without significant wrinkles, and the second surface deforms into a convex surface without significant wrinkles.

56. The apparatus of claim 47, wherein the first chamber is hermetically sealed along its entire periphery.

57. The apparatus of claim 47, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

58. The apparatus of claim 47, wherein the first layer and the second layer are adhered together by a heat seal.

59. The apparatus of claim 47, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

60. The apparatus of claim 59, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other regions surrounding the first chamber and the second chamber.

61. The apparatus of claim 57, wherein the brush head of the applicator is located in the second chamber.

62. The apparatus of claim 57, wherein the brush head of the applicator enters the transition zone during the active state.

63. The device of claim 57, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

64. An apparatus for storing and dispensing a flowable dental composition, the apparatus comprising: A first layer and a second layer, wherein the first layer and the second layer form a first chamber, a transition zone and a second chamber, the first chamber being used to contain a flowable dental composition; The first chamber has a first concave surface formed in the first layer and a second concave surface formed in the second layer; The applicator is held in the second chamber; The second concave surface deforms substantially irreversibly in response to the pressure applied to the first chamber and forms a smooth convex surface aligned with the first concave surface; The device also includes an optical interruption section; The first layer and the second layer include a first transparent layer, a second aluminum layer and a third sealing layer; The light interruption portion includes a cutout portion that passes through a portion of the first layer and a portion of the second layer.

65. The apparatus of claim 64, wherein the apparatus includes an inactive state and an active state, wherein in the inactive state, the substance is held in the chamber, and wherein in the active state, a portion of the second concave surface deforms substantially irreversibly in response to pressure applied to the first chamber, and the substance is thereby dispensed into the second chamber through the transition zone.

66. The apparatus of claim 64, wherein the first concave surface and the second concave surface are cold-formed.

67. The apparatus of claim 64, wherein one of the third sealing layers comprises carbon black.

68. The device of claim 66, wherein when the device is inactive, the first cold-formed surface is concave and the second cold-formed surface is concave, and when the device is active, the first cold-formed surface remains concave and the second cold-formed surface deforms into a convex shape, and the flowable dental composition is thereby dispensed from the first chamber through the transition zone.

69. The apparatus of claim 66, wherein a portion of the second cold-formed surface deforms substantially irreversibly in response to pressure applied to the first chamber and forms a smooth surface aligned with the first concave surface.

70. The apparatus of claim 66, wherein when the apparatus is in an active state, the first cold-formed surface remains concave without significant wrinkles, and the second cold-formed surface deforms into a convex surface without significant wrinkles.

71. The apparatus of claim 64, wherein the first chamber is hermetically sealed along its entire periphery.

72. The apparatus of claim 64, wherein the dispensing area is connected to the second chamber, and wherein the dispensing area holds the axis of the applicator.

73. The apparatus of claim 64, wherein the first layer and the second layer are adhered together by a heat seal.

74. The apparatus of claim 64, wherein the first layer and the second layer are adhered together in an inactive state in the transition zone and around the first chamber and the second chamber.

75. The apparatus of claim 74, wherein the adhesion of the transition zone between the first layer and the second layer is reduced compared to other regions surrounding the first chamber and the second chamber.

76. The apparatus of claim 64, wherein the brush head of the applicator is located in the second chamber.

77. The apparatus of claim 64, wherein the brush head of the applicator enters the transition zone during the active state.

78. The device of claim 64, wherein the dental composition is a cement, adhesive, or fluoride treatment agent.

79. A method of manufacturing an apparatus for storing and dispensing a flowable dental or orthodontic composition, the method comprising: Provide the first layer; The first layer is cold-formed, thereby partially forming the first chamber and the second chamber; The first chamber is filled with the described flowable dental or orthodontic composition; Provide a second layer; The second layer is cold-formed, thereby partially forming the first chamber and the second chamber; The second layer is sealed to the first layer in a surface contact manner, thereby opening the first chamber and the second chamber to form a distribution area, and forming a selectively openable transition area between the first chamber and the second chamber and in the distribution area; The dye cuts the device to the desired shape; as well as The first and second layers are partially cut by making cuts for the light interruption portion.

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