JP2022054051A - Dental powder/liquid mixing/kneading type pharmacy package - Google Patents

Abstract

To provide a dental powder/liquid mixing/kneading type pharmacy package that makes it possible to sufficiently favorably mix and knead powder and liquid without requiring troublesome work.SOLUTION: A dental powder/liquid mixing/kneading type pharmacy package comprises a bag body that is constituted by one side wall formed from a single layer or synthetic resin laminate film and the other side wall formed from a single layer or synthetic resin laminate film and has the whole periphery that is closed. A check valve extending over the whole part in the width direction in an inner space of the bag body is disposed. Liquid is stored on the upstream side from the check valve in the inner space of the bag body; powder is stored on the downstream side of the check valve in the inner space of the bag body.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dental powder-liquid kneading type preparation package in which a powder material and a liquid material are separately contained, and more specifically, a single-sided wall and a single-layer or laminated composite formed from a single-layer or laminated synthetic resin film. It has a bag body composed of an other surface wall formed of a resin film and the entire peripheral edge is closed, and the internal space of the bag body is divided into two spaces, and a liquid is contained in one space of the other. The present invention relates to a dental powder-liquid kneading type dispensing package in which powder is stored in the space of.

Dental preparations such as denture base lining materials include separately prepared (meth) acrylic acid-based polymers and powders containing an oxidizing agent as the main components, and polymerizable monomers such as (meth) acrylic acid-based monomers and reduction agents. It is produced by kneading a liquid material containing an agent as a main component at a predetermined ratio. As the dental powder-liquid kneading type dispensing package for conveniently providing such a dental powder-liquid kneading type preparation, the following Patent Documents 1 and 2 describe a single-sided wall formed from a laminated synthetic resin film and a laminated synthetic resin film. A dental powder-liquid kneading type dispensing package is disclosed, which comprises a bag body composed of an other-sided wall formed of, and the entire peripheral edge of the one-sided wall and the other-sided wall is closed by welding to each other. The internal space of the bag is separated into two spaces by a separation region in which the inner surface of the one-sided wall and the inner surface of the other-sided wall are freely welded over the entire width, and a predetermined amount of liquid is contained in one space. The material is stored, and a predetermined amount of powder material is stored in the other space.

When the liquid material and the powder material are kneaded to form a preparation, a pressing force is applied to the space containing the liquid material to force the liquid material toward the separation region, thereby peeling the separation region. The liquid is mixed into the powder material by communicating the space containing the liquid material and the space containing the powder material, and then the required action is applied to the bag body with a finger or an appropriate instrument to apply the required action to the powder material and the liquid material. To knead. After that, open the bag and use the kneaded preparation.

Japanese Unexamined Patent Publication No. 2014-223237 Japanese Unexamined Patent Publication No. 2019-182765

Therefore, according to the experience of the present inventors, in the conventional dental powder-liquid kneading type dispensing package as described above, the liquid material contained in one of the spaces after the separation region is peeled off is used. When the liquid material flows into the other space and mixed with the powder to knead the powder material and the liquid material, the liquid material flowing into the other space returns to one space and the kneading becomes insufficient. There is a problem to be solved that uniform dispensing becomes difficult, or the liquid material that has returned to one space needs to be forced toward the other space again, which complicates the work.

The present invention has been made in view of the above facts, and its main technical problem is that it is possible to knead a powder material and a liquid material sufficiently well without requiring complicated work, which is novel and It is to provide an improved dental powder kneading type dispensing package.

As a result of diligent research and experiments, the present inventors can achieve the above-mentioned main technical problem by disposing a check valve extending in the entire width direction in the internal space of the bag body. I found.

That is, according to the present invention, as a dental powder-liquid kneading type dispensing package that achieves the above-mentioned main technical problems,
A bag body composed of a single-sided wall formed of a single-layer or laminated synthetic resin film and a other-sided wall formed of a single-layer or laminated synthetic resin film and whose entire peripheral edge is closed, and the inside space of the bag body. A check valve extending over the entire width direction, a liquid material contained on the upstream side of the check valve in the internal space of the bag body, and the check valve in the internal space of the bag body. Provided is a dental powder-liquid kneading type dispensing package comprising a powder material housed on the downstream side.

Preferably, the check valve has both side edges fixed and gripped between the inner surface of the one-sided wall and the inner surface of the other side wall, the upstream edge is fixed to the inner surface of the one-sided wall, and the downstream end is It is composed of a valve piece formed of a synthetic resin film that is in contact with the inner surface of the other surface wall. It is preferable that the downstream end portion of the valve piece is detachably fixed to the inner surface of the other surface wall. The check valve is formed of a synthetic resin film in which both side edges are fixed and gripped between the inner surface of the one-sided wall and the inner surface of the other-sided wall, and the upstream end is fixed to the inner surface of the one-sided wall. From a synthetic resin film in which the first valve piece and both side edges are fixed and gripped between the inner surface of the one-sided wall and the inner surface of the other-sided wall, and the upstream end is fixed to the inner surface of the other-sided wall. It is also preferable that the second valve piece is composed of the formed second valve piece, and the downstream end portion of the first valve piece and the downstream end portion of the second valve piece are in mutual contact with each other. It is preferable that the downstream end of the first valve piece and the downstream end of the second valve piece are detachably fixed to each other. Preferably, on the upstream side of the check valve, a separation region in which the inner surface of the one-sided wall and the inner surface of the other-sided wall are detachably fixed is arranged over the entire width direction of the internal space of the bag body. The liquid is contained upstream of the separation region. The separation region may be spaced apart from the check valve, or the separation region may be disposed adjacent to the check valve. It is preferable that the internal space of the bag has a width reduction region whose width is gradually reduced toward the downstream side on the upstream side of the check valve.

In the dental powder-liquid kneading type dispensing package of the present invention, the liquid material contained in the upstream side of the check valve in the internal space of the bag body is allowed to flow into the downstream side of the check valve through the check valve. When mixed with the powder material, the check valve ensures that the liquid material does not return to the upstream side of the check valve again, thus kneading the powder material and the liquid material sufficiently well without requiring complicated work. It is possible to do.

The plan view which shows the preferable embodiment of the dental powder liquid kneading type dispensing package configured according to this invention. FIG. 1 is an enlarged partial cross-sectional view taken along the line II-II of FIG. FIG. 2 is an enlarged partial cross-sectional view similar to FIG. 2, showing a modified example of the check valve in the dental powder-liquid kneading type dispensing package shown in FIG. 1. FIG. 3 is a plan view showing another preferred embodiment of a dental powder kneading type dispensing package configured according to the present invention. FIG. 3 is a plan view showing still another preferred embodiment of a dental powder kneading type dispensing package configured according to the present invention.

Hereinafter, the details will be further described with reference to the accompanying drawings showing suitable embodiments of the dental powder kneading type dispensing package configured according to the present invention.

Explaining with reference to FIGS. 1 and 2, the illustrated dental powder kneading type dispensing package shown by No. 2 as a whole includes a bag body 4 composed of a single-sided wall 6 and an other-sided wall 8 (FIG. 2). It is equipped. It is convenient that the one-sided wall 6 and the other-sided wall 8 have substantially the same dimensions and have a rectangular shape. Each of the one-sided wall 6 and the other-sided wall 8 can be formed from a single-layer synthetic resin film, but is a laminated resin film, particularly an outer layer having liquid and gas barrier properties and an inner layer (sealant layer) having heat welding properties. ) And is preferably formed from a laminated synthetic resin film. As a suitable synthetic resin film constituting the outer layer, a polyethylene terephthalate film and a polyethylene terephthalate film vapor-deposited with silica can be exemplified. As a suitable synthetic resin film constituting the inner layer, a film formed from a mixture of a polymer alloy containing an ionomer as a main component of a copolymer of ethylene and (meth) acrylic acid ester and polyethylene can be exemplified. .. If necessary, a synthetic resin film having excellent liquid and gas barrier properties, ultraviolet blocking properties, etc., for example, a polyethylene film and an ethylene-vinyl alcohol copolymer film, is interposed between the outer layer and the inner layer as an intermediate layer. You can also. It is convenient that at least one of the one-sided wall 6 and the other-sided wall 8 is transparent or translucent so that the powder and the liquid contained in the bag 4 can be visually recognized. In the bag body 4, two films of the film forming the one-sided wall 6 and the film forming the other-sided wall 8 are superposed on each other, and the required parts are fixed to each other, or a single film is folded and superposed. It can be created by anchoring the required site (adhesion will be mentioned next).

It is important that the one-sided wall 6 and the other-sided wall 8 constituting the bag body 4 are closed over the entire peripheral edge, and a closed internal space is defined. In the illustrated embodiment, for convenience, the inner surface of the film forming the one-sided wall 6 and the inner surface of the film forming the other-sided wall 8 are fixed to each other in the region densely dotted with black dots in FIG. It is convenient that the film forming the one-sided wall 6 and the film forming the other side wall 8 are fixed by heat welding. In the illustrated embodiment, the internal space defined in the bag 4 is a relatively wide and rectangular first region 10a, and the width is gradually reduced toward the downstream side (left in FIG. 1). It has a second region 10b, a relatively narrow and rectangular third region 10c and a relatively wide and rectangular fourth region 10d. The first region 10a, the second region 10b, and, if necessary, a part of the third region 10c (the region on the 10b side of the check valve) together form a space for accommodating the liquid agent. A predetermined amount of liquid is sealed inside, and the fourth region constitutes a space for accommodating the powder, and a predetermined amount of powder is sealed inside the space. In the illustrated embodiment, the second region 10b is provided to narrow the width of the third region 10c, but the second region 10b is not provided and the widths of the first, third and fourth regions are not provided. May be the same width so that these regions are continuous.

Continuing the description with reference to FIGS. 1 and 2, in the dental powder-liquid kneading type dispensing package 2 configured according to the present invention, the bag body 4 extends in the entire width direction in the internal space. It is important that the check valve 12 is disposed. In the illustrated embodiment, the flow from upstream to downstream (from right to left in FIG. 1) is allowed in the third region 10c in the internal space defined in the bag body 4. A check valve 12 (FIG. 2) is provided to prevent the flow from downstream to upstream (from left to right in FIG. 1). As clearly illustrated in FIG. 2, the check valve 12 is composed of a valve piece 14 whose main portion extends downstream toward the other side wall 8 side (downward in FIG. 2). Both side edges (not shown) of the valve piece 14 are fixed and held between the one-sided wall 6 and the other-sided wall 8, the upstream end is fixed to the inner surface of the one-sided wall 6, and the downstream end is. It is in contact with the inner surface of the other surface wall 8. It is convenient that the downstream end portion of the valve piece 14 is not only abutted on the inner surface of the other surface wall 8 but also detachably fixed to the inner surface of the other surface wall 8. Here, "peelable fixing" means that the liquid material is peeled off by pressing to move the liquid material to the fourth region, which is the storage space for the powder material, to 10d during use (during dispensing). It means that it is fixed before the pressing is performed. Further, the adhesion of the upstream end portion to the inner surface of the one-sided wall 6 means the fixation that does not peel off even by such pressing.

The valve piece 14 as described above can be formed from a hard synthetic resin film. A preferable example of the rigid synthetic resin film forming the valve piece 14 is a film having a waist degree of about 10 to 300 mN, which is made of polyethylene terephthalate having a thickness of about 50 to 250 μm, nylon, polyester, polypropylene, EVOH, or the like. be able to. These films have a sealant layer for heat welding, and are fixed to the inner surface of the one-sided wall 6 and the inner surface of the other side wall 8 on both side edges of the valve piece 14, and the inner surface of the one-sided wall 6 at the upstream end of the valve piece 14. The adhesion to the sealant and the detachable adhesion to the inner surface of the other surface wall 8 at the downstream end of the valve piece 14 can also be conveniently performed by heat welding of the sealant layer.

FIG. 3 shows a modified example of the check valve 12. The check valve 12 shown in FIG. 3 is composed of a first valve piece 14a and a second valve piece 14b. Both side edges (not shown) of the valve piece 14a are fixed and held between the one-sided wall 6 and the other-sided wall 8, and the upstream end portion is fixed to the inner surface of the one-sided wall 6. The valve piece 14a extends from the upstream end portion fixed to the inner surface of the one-sided wall 8 toward the downstream side (left in FIG. 3) toward the other side wall (downward in FIG. 3). Both side edges (not shown) of the valve piece 14b are fixed and held between the one-sided wall 6 and the other-sided wall 8, and the upstream end is fixed to the inner surface of the other-sided wall 8. The valve piece 14b is inclined toward the one-sided wall side (upward in FIG. 3) toward the downstream (left in FIG. 3) from the upstream end portion fixed to the inner surface of the other-side wall 8 and extends. The downstream end of the valve piece 14a and the downstream end of the valve piece 14b are in contact with each other. It is convenient that the downstream end of the valve piece 14a and the downstream end of the valve piece 14b are not only in contact with each other but also detachably fixed. Except for the above-described configuration of the valve piece 14 shown in FIG. 3, it may be substantially the same as the valve piece 14 shown in FIG.

In addition, the check valve 12 of the form shown in FIG. 2 and the check valve 12 of the form shown in FIG. 3 are preferable, but various forms are substituted for the check valve 12 of such a form. The check valve of the above, for example, the check valve of the form disclosed in Japanese Patent Application Laid-Open No. 10-28881, International Publication No. WO2011 / 016573 and Japanese Patent Application Laid-Open No. 2005-9531 can also be adopted.

Continuing the description with reference to FIG. 1, the first region 10a, the second region 10b, and the third region 10c in the internal space of the bag body 4 before the specific portion of the peripheral edge of the bag body 4 is closed. The required liquid material (not shown) is housed in a part, that is, the region on the upstream side (right side in FIG. 1) of the check valve 12, and the required powder material is contained in the fourth region 10d. (Not shown) is accommodated. After that, the specific portion of the bag body 4 is also closed, and the internal space inside the bag body 4 is sealed.

In order to knead the powder material and the liquid material contained in the bag body 4 to generate a dental preparation, for example, in a portion corresponding to the first region 10a of the internal space, with the outer surface of the one-sided wall 6. A finger is placed against the outer surface of the other surface wall 8 to press it, thereby applying pressure to the liquid material contained therein. Then, pressure is applied to the check valve 12 from the liquid material, and the check valve 12 is in the form shown in FIG. 2, and the downstream end portion of the valve piece 14 is detachably fixed to the inner surface of the other surface wall. In this case, the downstream end of the valve piece 14 is peeled off from the inner surface of the other surface wall 8, and the check valve 12 has the form shown in FIG. When the downstream end of the second valve piece 14b is detachably fixed, the downstream end of the valve piece 14a and the downstream end of the second valve piece 14b are first separated and passed through the check valve 12. Virtually all liquid materials can be flowed into the fourth region 10d of the internal section and mixed with the powder material contained in the fourth region 10d. The check valve 12 prevents the liquid material that has flowed into the fourth region 10d from flowing back into the third region 10c, the second region 10b, and the first region 10a.

Therefore, in the illustrated embodiment, the width of the second region 10b located on the upstream side of the check valve 12 in the internal space of the bag body 4 is gradually reduced toward the downstream side, so that the liquid material is used. The applied pressure is effectively transmitted to the valve pieces 14 or 14a and 14b of the check valve 12, and the liquid material is smoothly flowed downstream through the check valve 12. Further, when the check valve 12 is in the form shown in FIG. 2 and the downstream end portion of the valve piece 14 is detachably fixed to the inner surface of the other surface wall, or in the form shown in FIG. First, when the downstream end of the valve piece 14a and the downstream end of the second valve piece 14b are detachably fixed, when the dental powder-liquid kneading type dispensing package 2 is transported, etc. It is possible to prevent the liquid material from accidentally flowing to the downstream side through the check valve 14.

After substantially all the liquid material has flowed into the fourth region 10d, the powder material and the liquid material are used by a finger or by using an appropriate kneading tool such as the kneading tool disclosed in Patent Document 2 above. And knead. After that, the paste-like preparation produced by kneading the powder material and the liquid material by breaking an appropriate part of the bag body 4 is taken out from the bag body 4, and more specifically, from the fourth region 10d of the internal space. To use.

FIG. 4 illustrates another preferred embodiment of the dental powder kneading type dispensing package configured according to the present invention. In the embodiment illustrated in FIG. 4, there is an interval with respect to the downstream end of the first region 10a in the internal space of the bag 4 (thus, the third region 10c in which the check valve 12 is arranged). A separated region 16 in which the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 are detachably fixed is arranged in the portion located on the upstream side) over the entire width direction. In FIG. 4, for convenience, the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 are detachably fixed and the separated region 16 is shown with sparse black dots. It is convenient that the peelable fixation between the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 is carried out by heat fusion. In the embodiment shown in FIG. 4, the liquid material is housed in a portion on the upstream side (right side in FIG. 4) of the separation region 16 in the internal space of the bag body 4. The configuration of the embodiment shown in FIG. 4 other than the above-mentioned points is substantially the same as the embodiment described with reference to FIGS. 1 to 3.

FIG. 5 illustrates yet another embodiment of the dental powder kneading type dispensing package configured according to the present invention. In the embodiment shown in FIG. 5, the length in the liquid flow direction of the third region 10c, which is relatively narrow and rectangular in the internal space of the bag body 4, is the length in the liquid flow direction (the length in the left-right direction in FIG. 5). It is set to be slightly larger than the third region 10c in the embodiment shown in FIG. 1, and is correspondingly relatively wide and rectangular. First, the length of the region 10a in the liquid flow direction (in FIG. 5). The length in the left-right direction) is set to be slightly smaller than that of the third region 10a in the embodiment shown in FIG. A check valve (not shown) is disposed on the downstream side (left side in FIG. 5) half of the third region 10c, and the upstream side (right side in FIG. 5) half of the third region 10c, and therefore. At a portion adjacent to the check valve and located on the upstream side thereof, a separation region 18 in which the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 are detachably fixed is arranged over the entire width direction. .. Also in FIG. 5, for convenience, the separated region 18 in which the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 are detachably fixed is shown with sparse black dots. It is convenient that the peelable fixation between the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 is carried out by heat fusion. In the embodiment shown in FIG. 5, the liquid material is housed in a portion upstream (right side in FIG. 5) of the separation region 18 in the internal space of the bag body 4. The configuration of the embodiment shown in FIG. 5 other than the above-mentioned points is substantially the same as the embodiment described with reference to FIGS. 1 to 3.

In the embodiment shown in FIGS. 4 and 5, the inner surface of the one-sided wall 6 and the inner surface of the other-sided wall 8 are detachably fixed to the upstream side of the check valve (not shown) over the entire width direction. Since the separated region 18 is arranged, it is surely prevented that the liquid material is accidentally mixed with the powder material through the check valve during transportation or the like. In order to knead the powder material and the liquid material contained in the bag body 4 to generate a dental preparation, for example, in a portion corresponding to the first region 10a of the internal space, with the outer surface of the one-sided wall 6. A finger is placed against the outer surface of the other surface wall 8 to press it, thereby applying pressure to the liquid material contained therein. Thus, the pressure applied from the liquid material separates the inner surface of the one-sided wall 6 and the inner surface of the other side wall 8 in the isolated region 16 or 18, so that the liquid flows through the isolated region 16 or 18, and then the liquid material It flows into the fourth region 10d of the internal space through a check valve (not shown) and is mixed with the powder material.

2: Dental powder kneading type dispensing package 4: Bag body 6: Single-sided wall 8: Other-sided wall 10a: First area of internal space 10b: Second area of internal space 10c: Third area of internal space 10d: Fourth area of internal space 12: Check valve 14: Valve piece 14a: First valve piece 14b: Second valve piece 16: Separation area 18: Separation area

Claims (9)

A bag body composed of a single-sided wall formed of a single-layer or laminated synthetic resin film and a other-sided wall formed of a single-layer or laminated synthetic resin film and whose entire peripheral edge is closed, and the inside space of the bag body. A check valve extending over the entire width direction, a liquid material contained on the upstream side of the check valve in the internal space of the bag body, and the check valve in the internal space of the bag body. A dental powder-liquid kneading type preparation package comprising a powder material housed on the downstream side. The check valve has both side edges fixed and gripped between the inner surface of the one-sided wall and the inner surface of the other-sided wall, the upstream end edge is fixed to the inner surface of the one-sided wall, and the downstream end is the other-sided wall. The dental powder-liquid kneading type dispensing package according to claim 1, which is composed of a valve piece formed of a synthetic resin film, which is in contact with the inner surface of the above. The dental powder-liquid kneading type dispensing package according to claim 2, wherein the downstream end portion of the valve piece is detachably fixed to the inner surface of the other surface wall. The check valve is formed of a synthetic resin film in which both side edges are fixed and gripped between the inner surface of the one-sided wall and the inner surface of the other-sided wall, and the upstream end is fixed to the inner surface of the one-sided wall. From a synthetic resin film in which the first valve piece and both side edges are fixed and gripped between the inner surface of the one-sided wall and the inner surface of the other-sided wall, and the upstream end is fixed to the inner surface of the other-sided wall. The dentistry according to claim 1, which is composed of a second valve piece formed, and the downstream end of the first valve piece and the downstream end of the second valve piece are in mutual contact with each other. Powder liquid kneading type dispensing package. The dental powder kneading type dispensing package according to claim 4, wherein the downstream end of the first valve piece and the downstream end of the second valve piece are detachably fixed to each other. On the upstream side of the check valve, a separation region in which the inner surface of the one-sided wall and the inner surface of the other-sided wall are detachably fixed is disposed over the entire width direction of the internal space of the bag body. The dental powder-liquid kneading type dispensing package according to any one of claims 1 to 5, wherein the liquid material is housed on the upstream side of the separation region. The dental powder kneading type dispensing package according to claim 6, wherein the separation regions are arranged at intervals with respect to the check valve. The dental powder kneading type dispensing package according to claim 6, wherein the separation region is arranged adjacent to the check valve. The dental powder according to any one of claims 1 to 8, wherein the internal space of the bag has a width reduction region whose width is gradually reduced toward the downstream side on the upstream side of the check valve. Kneading type dispensing package.

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