JPH09182760A - Simultaneous extrusion device for plural reactive paste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable to take a specified amount of plural kinds of paste simultaneously and to knead it, by equipping two long tube bodies with a semicircular cross section with a paste storing part, inserting a plunger with an extrusion head with a semicircular cross section, and integrally fixing two tube bodies. SOLUTION: This simultaneous extrusion device for a plurality of reactive paste, which is preferably used for preparing a temporary sealing material for dental treatment and others, has tube bodies 1 and 2 with a semicircular cross section and reactive paste A and B are sealed in the tube bodies 1 and 2 respectively, and respective flat part of both tube bodies 1 and 2 are integrally fixed to each other via an adhesive 3. On each rear part of tube bodies 1 and 2, a setting pin 4 is set penetrating through each tube wall and simultaneously, plungers 7 and 8 integrated by a finger pressing part 9, and nozzle stoppers 10' and 20' are fixed to a tip opening part. Paste A and B are respectively sealed by the extrusion heads 5 and 6 protrudingly equipped on the tips of plunger 7 and 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reactive multi-paste co-extrusion device, which is particularly easy to use when plural kinds of pastes are mixed and kneaded such as cements and adhesives used for dental treatment. The present invention relates to a simple reactive multiple paste quantification device capable of collecting and kneading a plurality of types of paste at the same time.

[0002]

2. Description of the Related Art In a conventional system for curing a chemical composition at room temperature, two kinds of components, powder and fluid, and fluid and fluid, are mixed and kneaded immediately before use to carry out a chemical reaction. It was customary to let it cure. However, with this system, it is difficult to keep the mixing ratio of both components always accurate and the amount of sample collected accurately, and as a result, the physical properties of the mixed kneaded product obtained by reaction and curing are always constant. It was difficult to do.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above problems and has the following constitution. (1) The front part is provided with a nozzle part serving as a paste discharge port,
Two elongated cylinders having a semi-circular cross section with a plunger insertion opening in the rear part and a paste accommodating part in the middle part;
Two plungers each having an extrusion head with a semicircular cross-section in the front part to be inserted into each cylinder, and
The individual cylinders are face-to-face contact with each other by flat portions having a semicircular cross section, and are integrally fixed by fixing means, and the two plungers are finger-pressed with their rear ends connected and integrated. Reactive multi-paste co-extrusion device characterized in that it is configured to include a section. (2) A nozzle part that serves as a paste discharge port is provided in the front part,
Plural elongate cylinders each having a plunger insertion opening in the rear part and a paste accommodating part in the middle part and having a multi-section circular shape in cross section, and an extrusion with a multi-section circular section in the front part inserted into the same plurality of cylinders. A plurality of plungers each having a head, and the plurality of cylindrical bodies are face-to-face contact with each other by plane portions having a circular cross section, and are integrally fixed by fixing means. Is a reactive multi-paste co-extrusion device, characterized in that the plungers are provided with finger pressing portions whose rear ends are connected and integrated. (3) A nozzle part that serves as a paste discharge port is provided in the front part,
A plunger having a plunger insertion opening in the rear part, a plurality of elongated rectangular cylinders having a paste accommodating part in the middle part, and an extrusion head having a rectangular cross section in the front part inserted into the plurality of rectangular cylinders. And a plurality of the rectangular cylinders are face-to-face contact with each other on one flat surface and are integrally fixed by fixing means, and the plurality of plungers are A reactive multi-paste co-extrusion device comprising a finger pressing part whose ends are connected and integrated.

(4) A plurality of nozzles located at the front of the plurality of cylinders are eccentrically provided on each cylinder so that the nozzles are close to each other, and the above-mentioned (1) is provided. Item or or the reactive multiple paste coextrusion apparatus according to the item (2). (5) In any one of the items (1) to (4), the fixing means for the plurality of tubular bodies is formed by winding the outer circumference of the plurality of tubular bodies with a strip-shaped thin film. The reactive multi-paste coextrusion apparatus described. (6) The reactive multi-paste coextrusion apparatus according to item (5), wherein the strip-shaped thin film has a label display. (7) The reactive multi-paste coextrusion apparatus according to item (5) or (6), wherein the strip-shaped thin film is made of elastic rubber. (8) Any one of the items (1) to (7), wherein the fixing means for the plurality of cylinders is formed by adhering the contact surfaces of the plurality of cylinders with an adhesive. The reactive multi-paste co-extrusion device according to Crab. (8) The fixing means for the plurality of tubular bodies is characterized in that the plurality of tubular bodies are fitted into a short tube having an inner peripheral surface substantially the same as the outer shape of the plurality of tubular bodies. The reactive multi-paste coextrusion apparatus according to any one of (1) to (7). (10) The reactive multi-paste co-extrusion device according to any one of the items (1) to (9), characterized in that a finger hooking part is provided on the rear part of the cylindrical body. (11) The reactive multi-paste coextrusion apparatus according to any one of items (1) to (10), characterized in that the tip of the nozzle portion is sealed with a nozzle stopper.

(12) In the rear portion of the tubular body, a retaining pin is provided so as to pass through the tubular wall and the plunger rod portion, and (1) to (11). Reactive multi-paste co-extrusion equipment. (13) A plurality of cylinders are filled with different pastes, and each extrusion head has both an extrusion function of each paste and a sealing function of preventing each paste from flowing out. The reactive multi-paste coextrusion apparatus according to any one of (1) to (12), which is characterized. (14) From a cylindrical body in which one cylindrical body is divided into a plurality of vertically long spaces by a vertically long partition wall, and a plurality of plungers each having an extrusion head at a front portion to be inserted into the plurality of spaces. And a plurality of plungers each having a finger pressing portion whose rear ends are connected and integrated with each other.

In the present invention described above, the elements constituting the desired composition are divided into a plurality of fluids (a plurality of types of pastes) in advance, and these are filled in a plurality of cylinders, and the plurality of cylinders are filled. Are fixed integrally and a plurality of plungers are pushed into them by finger pressure, a fixed amount of a plurality of kinds of paste is always discharged from a plurality of nozzles at the tips of a plurality of cylinders.

Mixing these two discharged pastes
By kneading, it is possible to always obtain products of constant quality. It should be noted that it is preferable to arrange the discharge ports of the nozzles close to each other in order to bring the plural kinds of pastes closer to each other before mixing and kneading them.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall view of a reactive multi-paste co-extrusion device according to an embodiment of the present invention, which is preferably used for the preparation of a temporary sealing material for dental treatment, a resin cement for dental treatment, and the like. Longitudinal section, (b) is X of (a)
It is -X sectional drawing. As shown in FIG. 1, the reactive paste A and the second paste are added to the cylindrical body 1 having a first semicircular cross section (circle divided into two).
The reactive paste B is enclosed in the cylindrical body 2 having a semicircular cross section.

In this case, the paste A comprises a mixture of glass fine powder, polyacrylic acid fine powder + hydroxyethyl methacrylate monomer and a polymerization initiator, and paste B comprises silica gel, a polyacrylic acid aqueous solution and a polymerization accelerator. It consists of a mixture. The two cylindrical bodies 1 and 2 are brought into face-to-face contact with their plane portions C and C ′ aligned, and the abutting faces are integrally fixed via an adhesive 3.

Further, a retaining pin 4 is provided at the rear portion of the cylindrical body 1, 2 so as to penetrate the cylindrical wall and the plungers 7, 8. It should be noted that nozzles 10 and 20 are provided in front of the cylinders 1 and 2, and nozzle stoppers 10 ′ and 2 are provided at the tip opening portions thereof.
0'has been established. As described above, the paste A and the paste B are enclosed in the cylindrical bodies 1 and 2, and the pastes A and B are formed by the extrusion heads 5 and 6 projecting from the tips of the plungers 7 and 8. It is enclosed in the cylinders 1 and 2 in a state of being shielded from the outside world. The extrusion heads 5 and 6 are attached to the cylindrical bodies 1 and 2 by the retaining pins 4.
It is fixedly locked inside. Thus, the cylinders 1 and 2
Since the plungers 7 and 8 are integrated with each other via the retaining pin 4, the reactive multi-paste extruder can be handled as an integrated product, and no assembly work is required at the time of use.

The cylindrical bodies 1 and 2 and the plungers 7 and 8 may not be integrated as described above, but may be prepared separately. In that case, for example, a rod (not shown) having the same outer diameter as the inner diameter of the cylinder is fitted between the rear ends of the pastes A and B in the cylinders 1 and 2 and the rear end of the cylinder, The rod should be pulled out at the time of use. Further, a shield film (not shown) is provided on the rear ends of the pastes A and B by adhering the peripheral portion to the inner wall of the cylinder, and the film is applied by the pressing force of the extrusion heads 5 and 6 of the plunger during use. Alternatively, the pastes A and B may be extruded from the nozzles 10 and 20 by breaking.

Next, in using the present extruder, first, the nozzle stoppers 10 'and 20' fixed to the tips of the nozzles 10 and 20 are removed, the retaining pins 4 are removed, and the cylindrical bodies 1 and 2 are removed. The index finger and the middle finger are hooked on the finger hooks 11 and 22, and the thumb is pressed against the finger pressing portion 9, and the thumb is pressed there. This allows the plunger 7,
The extrusion head parts 5 and 6 of 8 are pushed into the cylinders 1 and 2, and the A paste and the B paste in the cylinders 1 and 2 are injected into the nozzle part 10,
The same amount is simultaneously extruded from 20 onto an external kneading plate (not shown).

Since the nozzle portions 10 and 20 are arranged close to each other, the extruded pastes A and B can be easily mixed and kneaded with a spatula (kneading spatula) on the kneading plate. Immediately fill the cavity of the affected tooth with the mixture. Then, a cured composition having an appropriate curing rate, hardness, pressure resistance and the like can always be obtained with good repeatability.

The above example is a reactive two paste extruder having a circular cross section, but various perspective views may be shown in FIGS. 2 and 3. 2 (a) is a circular shape composed of the above-mentioned two semi-circular cylindrical bodies, FIG. 2 (b) is a rectangular shape having two cross sections, and FIG. 3 (c) is two cross sections. It is made up of trapezoids.

FIG. 3D shows a cylindrical body having a three-section circular cross section. The three cylindrical bodies have nozzles a-
10, b-20 and c-30, and plungers a-7, b-8 and c-9 in the rear, and three retaining pins 4 ... on the rear cylinder wall of the cylinder. Three plungers a-7, b-8 and c-9 are provided so as to penetrate therethrough. In addition, paste A,
Filled with B and C (not shown).

2 (a), 2 (b) and 3 (c), the label / wound band 3 serves as a fixing means for the cylinders 1 and 2.
0 is adopted. In the above case, not only the winding by the label and the winding band 30, but also the adhesive may be applied to the abutting surfaces of the cylindrical bodies 1 and 2 to more firmly fix them.

As described above, by using the coextrusion device of the present invention, a plurality of types (A, B, C.
It is possible to easily extrude and collect a plurality of kinds of pastes of (), and thus it is possible to provide a highly accurate reaction-curing composition. As a result, it becomes possible to surely exhibit the effect of maintaining the restoration, the effect of adhesion, and the effect of the drug in the dental treatment.

The reactive multi-paste co-extrusion device of the present invention is used in the dental treatment field as a sealant (temporary sealant) during the treatment of caries, a lining material for protecting living pulp, an inlay, a crown, a post and the like. It can be suitably used as an equal-quantity extrusion device for an adhesive material between a prosthesis and a tooth substance, cement, etc., and a silicone rubber impression material, a thiocoral rubber impression material, etc. used when obtaining a dental impression material.

The dental lumber and its paste material combination which can be effectively produced by using the reactive multi-paste coextrusion apparatus of the present invention are exemplified below. (1) Temporary sealing material for dental treatment A paste material composition: glass fine powder + triethylene glycol dimethacrylate (3G) + tertiary amine B paste material composition: silica gel + polycarboxylic acid aqueous solution + benzoyl peroxide (2) dentistry Therapeutic resin cement A paste material composition: fine glass powder + bis GMA monomer + MMA monomer +
Tertiary amine B paste material composition: glass fine powder + bis GMA monomer + 2.6E monomer + benzoyl peroxide (3) Dental precision silicone rubber impression material A paste material composition: polydimethylsiloxane + curing agent B paste material composition: poly Dimethylsiloxane + Curing Accelerator Conventionally, in the area of dental treatment materials, many products were obtained by mixing and kneading two kinds of paste components, and it was not easy to quantitatively and simultaneously collect the pastes A, B ... By using the apparatus, it is possible to easily extrude and supply a plurality of pastes A, B, ... At the same time, and greatly improve the dental treatment effect.

At present, in general adhesives (for example, epoxy resin adhesive, urethane resin adhesive, etc.), there are many commercially available packages in which the A paste and the B paste are separately packaged in an aluminum tube. It is difficult to properly adjust the extrusion rate ratio of both pastes, and a sufficient adhesive effect may not be exhibited. However, by using the reactive multiple paste coextrusion apparatus of the present invention, the difficulty can be solved and the adhesive effect can be further improved.

The above example is an extrusion apparatus in which a plurality of cylinders are fixed in contact with each other. However, a cylinder in which one cylinder is originally divided into a plurality of spaces by a vertically long inner wall may be used. . That is, a single cylindrical body is divided into a plurality of vertically long spaces by vertically long partition walls, and a plurality of plungers each having an extrusion head at the front part inserted into the plurality of spaces. The plurality of plungers may be a reactive multi-paste co-extrusion device characterized in that the rear ends of the plurality of plungers are provided with finger pressing portions which are connected and integrated.

[0022]

As described above, according to the reactive multi-paste extrusion apparatus of the present invention, a plurality of types of reactive pastes can be easily extruded and supplied simultaneously in a fixed amount. Also, for example, in the rear part of the tubular body, a retaining pin is pierced through the tubular wall and the plunger rod part, and the plunger is partially inserted into the tubular body, and the retaining pin locks in an immovable state to integrate it. The reactive multi-paste extruding device does not require an assembling operation at the time of use and can be used immediately by pulling out the retaining pin.

Therefore, the present invention makes a great contribution in the fields of general bonding technology and dental treatment.

[Brief description of the drawings]

FIG. 1 is an overall view of a reactive multi-paste coextrusion apparatus according to an embodiment of the present invention, which is preferably used for preparing a temporary sealing material for dental treatment, a resin cement for dental treatment, and the like (1)
Is an overall longitudinal sectional view, (2) is an XX sectional view of (1),
(3) is a YY sectional view of (1) figure, (3) is a ZZ sectional view of (1) figure.

FIG. 2 is a perspective view of an extrusion device according to another embodiment.

FIG. 3 is a perspective view of an extrusion device according to another embodiment.

[Explanation of symbols]

 1: 1st cross-section semicircular cylinder 2: 2nd cross-section semicircular cylinder 3: Adhesive 4: Fastening pin 5,6: Extrusion head 7,8, a-7, b-8, c- 9: Plunger 9: Finger pressing part 10, 20, a-10, b-20, c-30: Nozzle 10 ', 20' Nozzle stopper 11, 22: Finger hook part 30: Label and winding band A: A paste , B: B paste C, C ': plane part

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[Procedure amendment]

[Submission date] March 8, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG. 1 is an overall view of a reactive multi-paste coextrusion apparatus according to an embodiment of the present invention, which is preferably used for adjusting a temporary sealing material for dental treatment, a resin cement for dental treatment, and the like (1)
Is an overall longitudinal sectional view, (2) is an XX sectional view of (1),
(3) is a YY sectional view of (1) figure, ( 4 ) is a ZZ sectional view of (1) figure.

Claims (14)

[Claims] 1. Two elongated cylinders having a semi-circular cross section having a nozzle portion serving as a paste discharge port at a front portion, a plunger insertion port at a rear portion, and a paste accommodating portion at an intermediate portion; Two plungers each having an extrusion head with a semicircular cross section inserted into the front of each of the cylinders, and the two cylinders are face-to-face abutted with each other by a flat portion having a semicircular cross section, and Reactive multi-paste co-extrusion device characterized in that the two plungers are integrally fixed by a fixing means, and the two plungers are provided with finger pressing portions whose rear ends are connected and integrated. . 2. A plurality of elongated cylindrical members each having a circular shape with a plurality of sections and having a nozzle portion serving as a paste discharge port at a front portion, a plunger insertion port at a rear portion, and a paste accommodating portion at an intermediate portion, A plurality of plungers each having an extrusion head with a circular cross section divided into a plurality of sections inserted into a plurality of cylindrical bodies; And a plurality of plungers are integrally fixed by a fixing means, and the plurality of plungers are provided with finger pressing portions whose rear ends are connected and integrated. Co-extrusion device. 3. A plurality of elongated rectangular cylinders each having a nozzle portion serving as a paste discharge port at a front portion, a plunger insertion port at a rear portion, and a paste accommodating portion at an intermediate portion, and a plurality of the same corners. A plurality of plungers each having a push-out head having a rectangular cross-section in the front part to be inserted into the cylindrical body, and the plurality of rectangular cylindrical bodies are face-to-face contact with each other by one flat surface portion, and are fixed by a fixing means. The reactive multi-paste co-extrusion device, wherein the plurality of plungers are integrally fixed, and the plurality of plungers are provided with finger pressing portions whose rear ends are connected and integrated. 4. A plurality of nozzles located at the front of a plurality of cylinders are eccentrically provided to each cylinder so that the nozzles come close to each other.
The reactive multi-paste coextrusion apparatus described. 5. The fixing means for a plurality of cylinders is formed by winding the outer circumference of a plurality of cylinders with a strip-shaped thin film. Reactive multiple paste coextrusion equipment. 6. The reactive multi-paste coextrusion apparatus according to claim 5, wherein the strip-shaped thin film has a label display. 7. The reactive multi-paste coextrusion apparatus according to claim 5, wherein the strip-shaped thin film is made of a rubber material having elasticity. 8. The fixing means for a plurality of cylinders, wherein the abutting surfaces of the plurality of cylinders are adhered by an adhesive agent. The reactive multi-paste coextrusion apparatus described. 9. The immobilizing means for a plurality of tubular bodies comprises a plurality of tubular bodies fitted into a short pipe having an inner peripheral surface substantially the same as the outer shape of the plurality of tubular bodies. The reactive multiple paste coextrusion apparatus according to any one of claims 1 to 7, which is characterized in that. 10. The reactive multi-paste co-extrusion device according to claim 1, wherein a finger hooking portion is provided on a rear portion of the cylindrical body. 11. The reactive multi-paste co-extrusion apparatus according to claim 1, wherein the tip of the nozzle portion is sealed with a nozzle stopper. 12. The reactive multiple paste according to claim 1, wherein a retaining pin is provided at a rear portion of the tubular body so as to pass through the tubular wall and the plunger rod portion. Co-extrusion device. 13. A plurality of cylinders are filled with different pastes, and each extrusion head has both an extrusion function for each paste and a sealing function for preventing each paste from flowing out. The reactive multi-paste co-extrusion device according to any one of claims 1 to 12, characterized in that. 14. A cylindrical body in which one cylindrical body is divided into a plurality of vertically long spaces by vertically long partition walls, and a plurality of plungers each having an extrusion head at a front portion to be inserted into the plurality of spaces. And a plurality of plungers each having a finger pressing part whose rear ends are connected and integrated with each other.