JPWO2020066586A1 - Aerosol type product with contents injection operation button and this contents injection operation button - Google Patents

Abstract

In the content injection operation button provided with an annular injection port, uniform spraying of the content, high adhesion rate of the content to the injection target part such as the affected part, and muffling of the content during injection are aimed at.
An injection port A is set between the annular nozzle 2 and the core 1c. The laterally linear content passage portion leading to the injection port A includes an upstream annular lateral passage portion B having a large content passage cross-sectional area with the core 1c and weakening the flow of the content, and a downstream side thereof. It is composed of a downstream annular cross passage portion C having a shape in which the cross-sectional area through which the contents pass is continuously reduced in the flow direction of the contents. The mode of reducing the content passage cross-sectional area of the downstream side annular cross passage portion C is set by the annular nozzle tapered surface 2a and the core 1c whose inner diameter becomes smaller toward the injection port A.

Description

The present invention is set in the annular gap space area extending to the content injection port of the longitudinal outer peripheral portion of the core arranged in the downstream space area of the stem, and the content injection port side of this annular gap space area. The present invention relates to a content injection operation button having an annular nozzle and a ring-shaped content passage portion composed of an annular nozzle.

In particular, the contents of the contents passage portion between the upstream side ring linear horizontal passage portion where the cross-sectional area of the contents passing between the contents and the core is large and weakens the flow of the contents, and the contents between the core on the downstream side thereof. The cross-sectional area through which the object passes becomes smaller in the flow direction of the content, and the downstream side ring-linear cross passage portion leading to the injection port is composed of the cross-sectional area.

Further, the injection direction for setting the flow direction of the contents to be injected into the external space area from the contents injection port between the core and the inner peripheral surface of the annular nozzle on the injection port side to the inside of the annular nozzle. There is a regulation department.

Further, the inner peripheral surface of the annular nozzle is prevented from coming into contact with the outer peripheral surface of the core so that the annular gap space area between the two is not partially blocked, and the core is set in a hollow shape. ..

In the present invention, the content injection operation button is provided with such an annular gap space area and an annular nozzle, and the annular nozzle is provided with a ring-linear content passage portion whose cross-sectional area through which the content passes changes, and the annular nozzle is restricted in the injection direction. By providing a part, etc., as will be described later,
-The contents are sprayed uniformly, the adhesion rate of the contents to the injection target part is increased, the sound is muted when the contents are injected, and the amount of resin used is reduced.

In the present specification, the longitudinal direction of each of the annular gap space area of the core and its outer peripheral portion and the annular nozzle is the front-rear direction (lateral direction), the content outflow side is "front", and the opposite content inflow side is. Write "after". That is, the left side of FIGS. 1, 2, 4, 4, 6 and 7 is referred to as "front", and the right side is referred to as "rear".

Conventionally, a content injection operation button has already been proposed in which an annular gap space area as a content passage portion to the injection port is provided in the longitudinal outer peripheral portion of the core arranged in the space area on the downstream side of the stem. (See Patent Document 1).

However, in the case of this content injection operation button,
(11) The contents flowing in from the stem side are injected into the external space area after being put into a weak current state at the upstream side of the ring linear passage.
(12) On the annular nozzle injection port side of the annular gap space area, the diffusion of the contents in the outward direction of the substantially annular injection target portion such as the external space area or the affected area is prevented as much as possible.
(13) Make the core hollow
There is no consideration about such things.

JP-A-2007-330861

The present invention takes into consideration the above points (11) to (13).

That is, in the content passage portion, the cross-sectional area of the content passage between the upstream side ring linear horizontal passage portion that weakens the flow of the content and the core becomes smaller in the content flow direction, and the downstream reaches the injection port. It is composed of a side ring linear cross passage and
The annular nozzle is provided with an injection direction regulating unit for setting the flow direction of the contents injected into the external space area from the content injection port between the core and the core to the inside of the ring.
By forming a separation setting portion on the annular nozzle to prevent contact with the outer peripheral surface of the core, etc.
The purpose is to make the contents uniformly sprayed, to increase the adhesion rate of the contents to the injection target part (external space area, affected part, etc.), and to mute the sound at the time of the above-mentioned contents injection.

Another purpose is to reduce the amount of resin used by setting the core to a hollow plastic one.

The present invention solves the above problems as follows.
(1) A core (for example, a core 1c described later) arranged in the downstream injection side space area of a stem for operating the content injection exhibiting a valve action (for example, the stem 5 described later) in the shape of the flow direction of the contents. 1d, 1e, 1g) and a linear annular gap for the contents passage set up to the injection port of the contents (for example, the injection port A described later) in the outer peripheral portion of the core, and the injection port of the annular gap. In the content injection operation button composed of the annular nozzle (for example, the annular nozzle 2 described later) set on the side.
An annular nozzle and the annular gap define a ring-linear content passage portion (for example, an upstream ring-linear cross passage portion B described later + a downstream-side ring linear lateral passage portion C).
The ring-linear content passage portion is
The content passage cross-sectional area between the core and the content passage cross-sectional area is large and the content passage cross-sectional area between the upstream side annular cross passage portion and the core on the downstream side is the upstream side. It has an annular lateral passage portion on the downstream side which is smaller in the flow direction than the annular lateral passage portion and reaches the injection port.
The one in the configuration mode is used.
(2) In (1) above
The annular nozzle
The downstream side annular cross passage portion is formed, and the diameter of the inner peripheral surface thereof is set according to the aspect of the inner tapered surface narrowed on the front end side (for example, the annular tapered surface 2a described later) in which the diameter becomes smaller toward the injection port.
The one in the configuration mode is used.
(3) A core (for example, a core 1c described later) arranged in the downstream injection side space area of a stem for operating the content injection exhibiting a valve action (for example, the stem 5 described later) in the shape of the flow direction of the contents. 1d, 1e, 1g) and a linear annular gap for the contents passage set up to the injection port of the contents (for example, the injection port A described later) in the outer peripheral portion of the core, and the injection port of the annular gap. In the content injection operation button composed of the annular nozzle (for example, the annular nozzle 2 described later) set on the side.
An annular nozzle and the annular gap define a ring-linear content passage portion (for example, an upstream ring-linear cross passage portion B described later + a downstream-side ring linear lateral passage portion C).
The annular nozzle
The inner circumference of the injection direction regulating unit (for example, the front end circumferential inner surface 2b described later) for setting the flow direction of the contents injected from the injection port to the core into the external space area to the inside of the ring. Prepared for the front end side of the surface,
The one in the configuration mode is used.
(4) In the above (1) and (2),
The annular nozzle
The front end side portion of the inner peripheral surface is provided with an injection direction regulating portion for setting the flow direction of the contents injected from the injection port to the core to the outer space area inside the ring.
The one in the configuration mode is used.
(5) In the above (1) to (4),
The annular nozzle
The inner peripheral surface is provided with a separation setting portion (for example, a separation setting convex portion 2e described later) for preventing contact between the inner peripheral surface portion of the core and the outer peripheral surface of the core.
The one in the configuration mode is used.
(6) In the above (1) to (5),
The cores (for example, cores 1c, 1d, 1e, 1g described later) are
A hollow plastic element,
The one in the configuration mode is used.

An aerosol-type product provided with a content injection operation button having such a configuration and the content injection operation button is the subject of the invention.

By adopting the above configuration, the present invention will be described in (41) to (47) described later.
(21) Aim for uniform spraying of the contents,
(22) To increase the adhesion rate of the contents to the injection target part,
(23) To mute the sound when the contents are injected,
(24) To reduce the amount of resin used,
You can do things like that.

It is explanatory drawing which shows the vertical cross section of the injection operation button (button body part + annular nozzle) which consists of a solid cylindrical core. It is explanatory drawing which shows the expanded state of the part of the annular injection port (annular gap) of FIG. It is explanatory drawing which shows the front view of FIG. This front view is the shape when the injection operation button shown in FIGS. 1 and 2 is viewed from the front. It is explanatory drawing which shows the vertical cross section of the injection operation button which consists of the core of the sheath shape with the front opening and the vertical circular cross section. It is explanatory drawing which shows the front view of FIG. 4 (and FIG. 6, FIG. 7). It should be noted that this front view is the shape when the injection operation buttons shown in FIGS. 4, 6 and 7 are viewed from the front of each. It is explanatory drawing which shows the vertical cross section of the injection operation button which consists of the first cylindrical core. It is explanatory drawing which shows the vertical cross section of the injection operation button which consists of the core of the 2nd cylinder shape. It is explanatory drawing which shows the verification example of the content injection pattern in the injection operation button of FIG.

An embodiment of the present invention will be described with reference to FIGS. 1 to 8.

1 to 3 show a content injection operation button having a solid cylindrical shape as a core for setting a ring-linear space area for passing the content in the outer peripheral portion, and FIGS. 4 to 7 show this button. A content injection operation button with a hollow sheath shape or a cylindrical shape for the core is shown.

It is shown that the component of the reference number with an alphabet (for example, the tubular vertical passage portion 1a) used in the present specification is, in principle, a part of the component of the numerical part of the reference number (for example, the button body portion 1). There is.

1 to 7
A is an injection port in an annular gap mode in which the contents are injected into the external space area.
B is an upstream ring linear cross passage that has a large cross-sectional area through the contents and weakens the flow of the contents.
In C, the cross-sectional area through which the contents pass becomes smaller in the direction of the contents flow, and the downstream ring linear cross passage portion leading to the injection port A,
φ1 is the outer diameter of the front end face of the core,
φ2 is the inner diameter of the front end face of the annular nozzle (> φ1),
θ is the inclination of the annular tapered surface with respect to the longitudinal direction of the core.
L is the length of the annular tapered surface in the anteroposterior direction,
Are shown respectively.
The radial length of the annular gap of the injection port A is (φ2-φ1) / 2.

again,
1 is a button body that constitutes an injection operation button for the contents of the container body,
1a is a tubular vertical passage portion for passing contents that communicates with a stem 5 described later, which is formed on the button main body portion 1 and exhibits a well-known valve action.
Reference numeral 1b is an annular horizontal passage portion for passing the contents, which is a circular linear passage portion communicating with the outflow portion of the tubular vertical passage portion 1a.
1c is a solid cylindrical core (see FIGS. 1 to 3) that forms an annular cross passage portion 1b on its outer circumference.
1d is a sheath-shaped core with a front opening and a vertical circular cross section that forms an annular cross passage 1b around its own circumference (see FIGS. 4 and 5).
1e is a first cylindrical core (see FIG. 6) that forms an annular cross passage portion 1b on its outer circumference.
1f is a vertical passage area for passing outside air, which is formed so as to communicate in the downward straight line direction from the rear end opening of the core 1e.
1 g is a second cylindrical core (see FIG. 7) that forms an annular cross passage 1b on the outer circumference.
1h is a lateral passage area for passing outside air, which is formed so as to communicate in the rear linear direction from the rear end opening of 1 g of the core.
An annular step portion 1j is formed on the outer inner peripheral surface of the annular cross passage portion 1b, and receives and engages with the rear end annular surface 2c of the annular nozzle 2 attached from the opening side thereof.
1k is an annular recess formed on the outer inner peripheral surface of the annular cross passage portion 1b in front of the annular step portion 1j and engages with the annular convex portion 2d of the annular nozzle 2.
1m is the top surface to be pushed down during injection operation,
Are shown respectively.

again,
2 is attached to the front end side portion (opening side) of the annular cross passage portion 1b to form an injection operation button together with the button main body portion 1, and is between each of the front end annular portions of the cores 1c, 1d, 1e, and 1g. , An annular nozzle defining the annular content injection port A,
2a is the entire inner peripheral slope of the annular nozzle 2, and is an annular tapered surface in a front narrowing mode in which the longitudinal annular cross-sectional area between the cores 1c, 1d, 1e, and 1g is smaller toward the injection port side. ，
2b is formed at the front end portion of the inner peripheral surface following the annular tapered surface 2a in the illustrated horizontal direction in which the cores 1c, 1d, 1e, and 1g project forward from the front end surfaces of the cores 1c, 1d, 1e, and 1g, respectively. Circumferential inner surface at the front end as an injection direction regulating part that regulates the flow direction of an object inside the ring, so to speak.
2c is a rear end annular surface that engages with the annular step portion 1j of the button body 1.
2d is an annular convex portion that engages with the annular concave portion 1k of the button body 1.
2e is formed at the front end portion of the inner peripheral surface of the annular nozzle at equal intervals in the circumferential direction to prevent the other inner peripheral surfaces from coming into contact with the outer peripheral surfaces of the cores 1c, 1d, 1e, 1g. For example, a total of three square pillar-shaped separation setting convex parts to secure a passage part in the annular front-rear direction around the core by separating both peripheral surfaces.
Are shown respectively.

again,
3 is a well-known container body for aerosol-type products containing the contents and injection gas described later.
Reference numeral 4 denotes a well-known mounting cup attached to the winding portion of the opening end of the container body 3.
No. 5 has a well-known valve action by protruding upward from the central opening of the mounting cup 4 and engaging with the tubular vertical passage portion 1a, and pushing down against the upward urging force. Stem,
Are shown respectively.

Here, the button body 1 and the annular nozzle 2 are made of plastic, and are made of, for example, polypropylene, polyethylene, polyacetal, nylon, polybutylene terephthalate, or the like.

The container body 3 and the stem 5 are made of, for example, plastic or metal. Further, the mounting cup 4 is made of metal, for example.

The basic features of the illustrated content injection operation button are:
(31) An annular nozzle 2 is set on the injection port A side of the annular cross passage portion 1b of the button main body 1 so that its annular tapered surface 2a faces the outer peripheral surfaces of the cores 1c, 1d, 1e, and 1g, respectively. death,
(32) In the state of this "annular transverse passage portion 1b + annular nozzle 2", the upstream side ring linear transverse passage portion B and the downstream side ring linear transverse passage portion C leading to the injection port A are defined.
(33) The front end faces of the cores 1c, 1d, 1e, and 1g are retracted from the front end faces of the annular nozzle.
(34) Separation setting that prevents the inner peripheral surface of the annular nozzle and the outer peripheral surfaces of the cores 1c, 1d, 1e, and 1g from coming into contact with each other on the front end side of the inner peripheral surface of the annular nozzle 2 on the outer circumference of the front end surface of the core. A convex portion 2e is formed,
(35) A hollow-shaped core 1d, 1e, 1g was formed on the plastic button body 1.
And so on.

The width (length) of the front end circumferential inner surface 2b of the annular nozzle 2 in the front-rear direction is about 0.5 mm, and the receding length corresponding to the illustration in (33) above is about 0.3 mm.

here
(41) The upstream side ring linear cross passage portion B has a large content passage cross-sectional area with the core, weakens the flow of the inflow contents from the stem 5, and the downstream side ring linear cross passage portion C. Is provided in such a manner that the cross-sectional area through which the contents pass is continuously reduced between the annular tapered surface 2a and the outer peripheral surface of the core, and is otherwise contacted by the contact action of the convex portion 2e for setting the separation with respect to the outer peripheral surface of the core. The annular gap passage portion is surely set. As a result, the turbulent state of the inflow contents is suppressed, and substantially stable and uniform injection of the contents from the injection port A is ensured.
(42) Further, by making the injection port A annular, the flow force of injection is reduced even with the same injection amount as compared with the conventional round hole-shaped injection port, and the contents are injected without adhering to the injection target portion. Prevents diffusion due to the flow of the gas, and improves the content adhesion rate to the injection target portion.
(43) Further, the jet noise can be reduced by increasing the injection port A in an annular shape to reduce the jet flow, and the annular tapered surface 2a is used to continuously measure the cross-sectional area of the contents passing through to the injection port A. Even if it is made smaller linearly, pressure fluctuations due to turbulence or the like are suppressed, the contents are less likely to vaporize, and the sound of the vaporized contents passing through the jet port can be reduced.
(44) Further, the flow direction of the contents passing through the downstream ring linear cross passage portion C is displaced inward as it approaches the injection port A due to the guiding action of the annular tapered surface 2a, thereby causing the contents to be displaced inward from the injection port A. The injection contents are easily injected into the annular inner region, and the diffusion of the injection contents to the outer ring is suppressed (see FIG. 8).
(45) Further, the outward diffusion suppressing action of the injection content is further enhanced by forming the front end circumferential inner surface 2b on the front end inner peripheral surface portion of the annular nozzle 2 so that this becomes a circumferential outer wall with respect to the injection content. It will be effective. It is optional whether or not the front end circumferential inner surface 2b is provided in addition to the annular tapered surface 2a.
(46) As described above, the illustrated content injection operation button guarantees uniform spraying of the content, high adhesion rate of the content to the injection target portion, and muffling of the content when the content is injected.
(47) Further, a hollow-shaped core 1d, 1e, 1g is formed on the plastic button main body 1, thereby ensuring a reduction in the amount of resin used for producing the button main body.

The content injection operation buttons of FIGS. 1 to 7 are used in a state of being attached to the stem 5 as shown in the drawing.

When a user or the like pushes down the top surface 1 m of the content injection operation button, the entire operation button and the stem integrated with the operation button move downward.

As the stem 5 moves downward, the well-known valve action portion of the stem and stem gasket shifts from the closed state to the open state, and the contents of the container body 3 move to the stem 5 due to the action of the injection gas. Flows into the tubular vertical passage portion 1a.

The contents flowing into the tubular vertical passage portion 1a are injected into the external space area by the flow of "upstream side ring linear horizontal passage portion B-downstream side ring linear horizontal passage portion C-annular injection port A". NS.

The content injection pattern of FIG. 8 is
φ1 (outer diameter of the front end face of the core): 6.5 mm
φ2 (inner diameter of front end face of annular nozzle: 7.0 mm
θ (inclination of the annular tapered surface with respect to the core longitudinal direction): 15 degrees L (length of the annular tapered surface in the front-rear direction): 6.3 mm
Contents and injection gas: LPG with 0.5% ethyl alcohol added
Injection time: 1 second Injection distance: 20 mm
This is a verification example in.

The illustrated verification pattern is an observation example when the contents are injected onto the thermal paper, and the portion inside the illustrated dotted line is the injection pattern itself. The portion extending downward from the inside of the dotted line is a portion where the injection contents hang down, so to speak, and this is not the injection pattern itself.

That is, it can be confirmed from the injection pattern itself in the illustrated dotted line that the contents are injected almost evenly, and the effects such as (21) and (22) above can be seen.

It goes without saying that the present invention is not limited to the above embodiments.
(51) Instead of the annular tapered surface 2a, an arbitrary number of stepped portions in the front narrowing mode is set.
(52) Set the gap vertical cross-sectional shape of the injection port A to various shapes such as ellipses and polygons other than circles.
(53) Separation setting Set an arbitrary number of convex portions 2e,
(54) Applicable to the content injection passage part corresponding to various button type operation parts such as tilt type and trigger lever other than push-down type.
You may do so.

Products to which the present invention is applied include cleaning agents, cleaning agents, antiperspirants, cooling agents, muscle anti-inflammatory agents, hair styling agents, hair treatment agents, hair dyes, hair growth agents, cosmetics, shaving foams, foods, and nutrition. Supplements (vitamins, etc.) Pharmaceuticals, quasi-drugs, paints, gardening agents, repellents (insecticides), cleaners, deodorants, washing glue, urethane foam, fire extinguishers, adhesives, lubricants, etc. There is a thing.

As the contents to be stored in the container body, various forms such as liquid, cream, and gel can be used, and the components to be blended in the contents include, for example, powders, oil components, alcohols, and surfactants. Examples include activators, polymer compounds, active ingredients according to each application, and water.

As the powder, metal salt powder, inorganic powder, resin powder, or the like is used. For example, talc, kaolin, aluminum hydroxychloride (aluminum salt), calcium alginate, gold powder, silver powder, mica, carbonate, barium sulfate, cellulose and mixtures thereof are used.

As the oil component, silicone oil, palm oil, eucalyptus oil, camellia oil, olive oil, jojoba oil, paraffin oil, myristic acid, palmitic acid, stearic acid, linolenic acid, linolenic acid and the like are used.

As alcohols, monohydric lower alcohols such as ethanol, monohydric higher alcohols such as lauryl alcohol, and polyhydric alcohols such as ethylene glycol, glycerin, and 1,3-butylene glycol are used.

Surfactants include anionic surfactants such as sodium lauryl sulfate, nonionic surfactants such as polyoxyethylene oleyl ether, amphoteric surfactants such as betaine lauryldimethylaminoacetate, and cations such as alkyltrimethylammonium chloride. Use a sex surfactant or the like.

As the polymer compound, methyl cellulose, gelatin, starch, casein, hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer and the like are used.

Active ingredients according to each application include anti-inflammatory analgesics such as methyl salicylate and indomethacin, disinfectants such as sodium benzoate and cresol, pest repellents such as pyrethroid and diethyl toluamide, and antiperspirants such as zinc oxide. Cooling agents such as camphor and menthol, anti-asthmatic agents such as ephedrine and adrenaline, sweeteners such as sclarose and aspartame, adhesives and paints such as epoxy resin and urethane, dyes such as paraphenylenediamine and aminophenol, dihydrogen phosphate Use fire extinguishing agents such as ammonium and sodium hydrogen carbonate / potassium.

Further, other than the above contents, suspension agents, ultraviolet absorbers, emulsifiers, moisturizers, antioxidants, sequestrants and the like can also be used.

The injection gas (injector) in the aerosol type product includes compressed gas such as carbon dioxide gas, nitrogen gas, compressed air, oxygen gas, rare gas, and a mixed gas thereof, and liquefied gas such as liquefied petroleum gas, dimethyl ether, and fluorocarbon. Is used.

A: Injection port of the annular gap B: Upstream ring linear cross passage C: Downstream ring linear cross passage

1: Button body 1a: Cylindrical vertical passage 1b: Circular horizontal passage 1c: Solid cylindrical core (FIGS. 1 to 3)
1d: Sheath-shaped core with front opening and vertical circular cross section (Figs. 4 and 5)
1e: First cylindrical core (Fig. 6)
1f: Vertical passage area for passing outside air (Fig. 6)
1g: Second cylindrical core (Fig. 7)
1h: Horizontal passage area for passing outside air (Fig. 7)
1j: annular step 1k: annular recess 1m: top surface

2: Circular nozzle 2a: Circular tapered surface 2b in front narrowing mode: Front end circumferential inner surface 2c: Rear end annular surface 2d: Circular convex portion 2e: Separation setting convex portion

3: Container body 4: Mounting cup 5: Stem

Claims (7)

A core arranged in the downstream injection side space area of the stem for operating the content injection that exhibits a valve action in the shape of the flow direction of the content, and the injection port of the content are set in the outer peripheral portion of the core. In the content injection operation button consisting of a linear annular gap for the content passage and an annular nozzle set on the injection port side of the annular gap.
The ring-shaped content passage portion is defined by the ring-shaped nozzle and the ring-shaped gap.
The ring-linear content passage portion is
The content passage cross-sectional area between the core and the content passage cross-sectional area is large and the content passage cross-sectional area between the upstream side annular cross passage portion and the core on the downstream side is the upstream side. It has an annular lateral passage portion on the downstream side which is smaller in the flow direction than the annular lateral passage portion and reaches the injection port.
Contents injection operation button characterized by that. The annular nozzle
The downstream side annular cross passage portion is formed, and the diameter of the inner peripheral surface thereof is set by the inner tapered surface mode of the narrowing on the front end side where the diameter becomes smaller toward the injection port.
The content injection operation button according to claim 1. A core arranged in the downstream injection side space area of the stem for operating the content injection that exhibits a valve action in the shape of the flow direction of the content, and the injection port of the content are set in the outer peripheral portion of the core. In the content injection operation button consisting of a linear annular gap for the content passage and an annular nozzle set on the injection port side of the annular gap.
The ring-shaped content passage portion is defined by the ring-shaped nozzle and the ring-shaped gap.
The annular nozzle
The front end side portion of the inner peripheral surface is provided with an injection direction regulating portion for setting the flow direction of the contents injected from the injection port to the core to the outer space area inside the annular shape.
Contents injection operation button characterized by that. The annular nozzle
The front end side portion of the inner peripheral surface is provided with an injection direction regulating portion for setting the flow direction of the contents injected from the injection port to the core to the outer space area inside the annular shape.
The content injection operation button according to claim 1 or 2. The annular nozzle
The inner peripheral surface is provided with a separation setting portion for preventing contact between the inner peripheral surface portion of the core and the outer peripheral surface of the core.
The content injection operation button according to any one of claims 1 to 4. The core is
A hollow plastic element,
The content injection operation button according to any one of claims 1 to 5. The content injection operation button according to any one of claims 1 to 6 is provided, and the injection gas and the contents are housed in the container body.
An aerosol-type product characterized by this.

Images