JP7274880B2

JP7274880B2 - METHOD FOR WELDING LIDS AND METHOD FOR MANUFACTURING PRESSURE PRODUCTS

Info

Publication number: JP7274880B2
Application number: JP2019022178A
Authority: JP
Inventors: 信也菅原; 公雄片岡; 英俊宮本
Original assignee: Daizo Corp
Current assignee: Daizo Corp
Priority date: 2019-02-09
Filing date: 2019-02-09
Publication date: 2023-05-17
Anticipated expiration: 2039-02-09
Also published as: JP2020128244A

Description

本発明は蓋体の溶着方法および加圧製品の製造方法に関し、とくに加圧容器用の容器本体に蓋体を超音波溶着する蓋体の溶着方法およびその方法を用いた加圧製品の製造方法に関する。 The present invention relates to a lid welding method and a pressurized product manufacturing method, and more particularly to a lid welding method for ultrasonically welding a lid to a container body for a pressurized container, and a pressurized product manufacturing method using the method. Regarding.

特許文献１の図１には、上端に開口部を有する容器本体と、その開口部を閉じ、容器本体に固定されるバルブ収容部とからなり、バルブ収容部の上端のフランジ部を容器本体の口部に形成した段部に当接させて支持させ、フランジ部を溶着あるいは接着によって容器本体に気密に固定することが開示されている。 In FIG. 1 of Patent Document 1, a container main body having an opening at the upper end and a valve accommodating portion that closes the opening and is fixed to the container main body are arranged. It is disclosed that the flange portion is air-tightly fixed to the container body by welding or bonding by contacting and supporting the stepped portion formed in the mouth portion.

特許文献２には、容器本体の口部内に挿入されるエアゾールバルブを容器本体に固定するための固定蓋（固定部材）の下面を口部の上面に超音波溶着した吐出容器が開示されている。また特許文献２の段落［００４１］には、口部の上面に断面三角形状の環状突起を設け、超音波振動を集中させて溶融させる技術が開示され、さらに溶融した樹脂が容器の内部に入り込まないよう、口部内面と固定蓋の外周面との間に溶融樹脂を貯めておく隙間を形成することが提案されている。 Patent Document 2 discloses a discharge container in which the lower surface of a fixing lid (fixing member) for fixing an aerosol valve inserted into the mouth of the container body to the container body is ultrasonically welded to the upper surface of the mouth. . Further, in paragraph [0041] of Patent Document 2, a technology is disclosed in which an annular protrusion having a triangular cross-section is provided on the upper surface of the mouth portion, and ultrasonic vibration is concentrated to melt the resin. In order to prevent this, it has been proposed to form a gap for storing molten resin between the inner surface of the mouth and the outer peripheral surface of the fixed lid.

特許文献３では、容器本体のフランジ（環状鍔）の上面を平らにし、そのフランジに重ねられるハウジングのフランジ（固定鍔）の下面に環状突起（溶着リブ）を設けるエアゾール容器の組み立て方法が開示されている。 Patent Document 3 discloses a method of assembling an aerosol container in which the upper surface of a flange (annular flange) of a container body is flattened, and an annular projection (welding rib) is provided on the lower surface of a flange (fixed flange) of a housing that overlaps the flange. ing.

ＷＯ２０１５／８０２５２号公報WO2015/80252 特開２０１８－１７７２６５号公報JP 2018-177265 A 特開昭６２－２８９２５５号公報JP-A-62-289255

特許文献１の内容物収容容器では、ハウジングのフランジは容器本体の段部に支持された状態で熱溶着されるので、強度および気密性が不充分になりがちである。特許文献２の吐出容器では、容器本体の上面に形成された環状突起が溶融して流動するので、固着強度およびシール性が高い。また、内側に流れ出る溶融樹脂については一応の対策がとられている。しかし外側に流れ出た樹脂が固化して溶融くずとなることにより、面同士の密着が妨げられ、長期間のうちに漏れが生ずることがある。また、周囲にはみ出した溶融くずが美観を損なう。特許文献３の吐出容器においても同様な問題が生ずる。 In the content-accommodating container of Patent Document 1, the flange of the housing is thermally welded while being supported by the stepped portion of the container body, so strength and airtightness tend to be insufficient. In the discharge container of Patent Document 2, the annular protrusion formed on the upper surface of the container body melts and flows, so that the fixing strength and sealing performance are high. In addition, some countermeasures are taken for the molten resin flowing out inside. However, the resin flowing out to the outside solidifies and becomes melted waste, which prevents the surfaces from coming into close contact with each other and may cause leakage over a long period of time. In addition, the melted waste protruding to the periphery impairs the appearance. A similar problem occurs in the discharge container of Patent Document 3 as well.

本出願人は未公開であるが、図１１に示す蓋体の溶着方法を提案している（特願２０１８－２１８７０４号）。この方法で製造される溶着容器１００では、蓋体１０１と外部容器１０２の間と、蓋体１０１と内部容器１０３の間の２個所に溶着しようとする当接部（溶着部）１０４、１０５がある。それらの当接部１０４、１０５はホーンＨと当接する蓋体１０１の天面１０７からの距離が異なっている。そのためホーンＨから振動を加えると、溶着条件によっては内部容器１０３の当接部のみが充分に溶着され、外部容器は充分に溶着されないことがある。また、外部容器１０２を溶着するために外部容器に溶着条件を合わせると、内部容器１０２の溶着が不充分になりやすく、さらに外部容器から溶着くずがはみ出しやすい。 Although not disclosed, the present applicant has proposed a welding method for the lid shown in FIG. 11 (Japanese Patent Application No. 2018-218704). In the welded container 100 manufactured by this method, contact portions (welded portions) 104 and 105 to be welded are provided between the lid 101 and the outer container 102 and between the lid 101 and the inner container 103. be. The contact portions 104 and 105 have different distances from the top surface 107 of the lid body 101 with which the horn H contacts. Therefore, when vibration is applied from the horn H, depending on the welding conditions, only the contact portion of the inner container 103 may be sufficiently welded, and the outer container may not be sufficiently welded. In addition, if the welding conditions are matched to the outer container in order to weld the outer container 102, the welding of the inner container 102 tends to be insufficient, and further, welding debris tends to protrude from the outer container.

本発明は容器本体に蓋体を溶着する溶着方法において、充分な溶着強度および気密性を得ることができ、とくに溶融樹脂の外側へのはみ出しを抑制することができる蓋体の溶着方法および加圧製品の製造方法を提供することを技術課題としている。 The present invention relates to a welding method for welding a lid to a container body, which is capable of obtaining sufficient welding strength and airtightness, and in particular, a welding method of a lid and a pressurization method capable of suppressing extrusion of molten resin to the outside. The technical problem is to provide a manufacturing method for the product.

本発明の蓋体の溶着方法は、円筒状の首部１３ｄ、１４ｄを有する容器本体１６（外部容器１３、内部容器１４）の前記首部１３ｄ、１４ｄの上端に、開口を密封するための蓋体１５を溶着する方法であって、前記首部１３ｄ、１４ｄの上端面１３ｆ、１４ｅと蓋体１５の対応する部位のうち、少なくとも一方の外周縁よりいくらか内側の位置に超音波溶着用の環状突起１３ｇ、１４ｇ、１３ｇ１、１３ｇ２を設けた容器本体１６と蓋体１５を準備し、前記首部１３ｄ、１４ｄの上端面１３ｆ、１４ｅに蓋体１５を載置し、前記蓋体１５の天面１７ｃにおける、前記環状突起１３ｇ、１４ｇ、１３ｇ１、１３ｇ２と対応する部位より外側（Ｒ）を除く範囲に超音波溶着用のホーンＨを当接させて超音波溶着することを特徴としている。 In the lid welding method of the present invention, a lid 15 for sealing the opening is attached to the upper ends of the necks 13d and 14d of a container body 16 (the outer container 13 and the inner container 14) having cylindrical necks 13d and 14d. , wherein an annular projection 13g for ultrasonic welding is positioned slightly inside the outer peripheral edge of at least one of the corresponding portions of the upper end surfaces 13f, 14e of the necks 13d, 14d and the lid 15; A container body 16 having 14g, 13g1, and 13g2 and a lid 15 are prepared, and the lid 15 is placed on the upper end surfaces 13f and 14e of the necks 13d and 14d. A horn H for ultrasonic welding is brought into contact with and ultrasonically welded in a range excluding the outer side (R) of the portions corresponding to the annular projections 13g, 14g, 13g1, and 13g2.

このような蓋体の溶着方法においては、前記ホーンＨの下面Ｈ１と蓋体１５の天面１７ｃのうち、いずれか一方または両方の径Ｄが、前記環状突起１３ｇ、１４ｇ、１３ｇ１、１３ｇ２の径と略同一であるか、またはいずれか一方または両方の前記環状突起と対応する部位より外側が切り欠かれていることが好ましい。 In such a lid body welding method, the diameter D of one or both of the lower surface H1 of the horn H and the top surface 17c of the lid body 15 is equal to the diameter D of the annular protrusions 13g, 14g, 13g1, and 13g2. , or one or both of the annular protrusions are preferably notched outside the corresponding portion.

さらに前記ホーンＨの下面Ｈ１のうち、容器本体１６の首部１３ｄ、１４ｄの内面より内側の範囲に、空所Ｈａが設けられていることが好ましい。 Further, it is preferable that the lower surface H1 of the horn H is provided with a hollow space Ha in a range inside the inner surfaces of the necks 13d and 14d of the container body 16. As shown in FIG.

前記容器本体１６が、円筒状の首部１３ｄを有する外部容器１３と、前記外部容器１３の内部に収容され、外部容器１３の首部１３ｄと嵌合する首部１４ｄを有する内部容器１４とからなり、前記内部容器１４が、その首部１４ｄの上端に、外部容器１３の上端面１３ｆから上に突出して外部容器１３の首部１３ｄの上端面１３ｆに係止されるフランジ１４ｆを有し、前記蓋体１５が、外部容器１３および内部容器１４の首部１３ａ、１４ｄの上端に当接する部位（１７ａ１、１７ｂ）を有し、前記蓋体１５を、外部容器１３および内部容器１４の首部１３ｄ、１４ｄの上端に載置し、前記ホーンＨを蓋体１５に当接して、前記蓋体１５を外部容器１３および内部容器１４の首部１３ｄ、１４ｄの上端１３ｆ、１４ｅにそれぞれ超音波溶着することにより、外部容器１３および内部容器１４の上端開口を密封することが好ましい。 The container main body 16 comprises an outer container 13 having a cylindrical neck portion 13d and an inner container 14 which is housed inside the outer container 13 and has a neck portion 14d which fits into the neck portion 13d of the outer container 13. The inner container 14 has a flange 14f on the upper end of the neck portion 14d thereof, which protrudes upward from the upper end surface 13f of the outer container 13 and is engaged with the upper end surface 13f of the neck portion 13d of the outer container 13. , and portions (17a1, 17b) abutting on the upper ends of the necks 13a, 14d of the outer container 13 and the inner container 14, and the lid body 15 is placed on the upper ends of the necks 13d, 14d of the outer container 13 and the inner container 14. The horn H is brought into contact with the cover 15, and the cover 15 is ultrasonically welded to the upper ends 13f, 14e of the necks 13d, 14d of the outer container 13 and the inner container 14, respectively. Preferably, the top opening of inner container 14 is sealed.

前記ホーンＨの下面Ｈ１のうち、内部容器１４の首部１４ｄの内面より内側の範囲に、空所Ｈａが設けられていることが好ましい。 It is preferable that the lower surface H1 of the horn H is provided with a hollow space Ha in a range inside the inner surface of the neck portion 14d of the internal container 14. As shown in FIG.

前記蓋体１５が、内部容器１４のフランジ１４ｆの外周と嵌合する外筒部１７ａと、内部容器１４の首部１４ｄに内挿する内筒部１５ａ１と、内部容器１４のフランジ１４ｆの上面１４ｅと当接する平板部１７とを有し、前記外筒部１７ａの下端１７ａ１が外部容器１３の首部１３ｄの上端面１３ｆと当接することが好ましい。 The lid body 15 includes an outer cylindrical portion 17a fitted to the outer periphery of the flange 14f of the inner container 14, an inner cylindrical portion 15a1 inserted into the neck portion 14d of the inner container 14, and an upper surface 14e of the flange 14f of the inner container 14. The lower end 17a1 of the outer cylindrical portion 17a preferably contacts the upper end surface 13f of the neck portion 13d of the outer container 13. As shown in FIG.

本発明の加圧製品の製造方法は、熱可塑性樹脂からなる容器本体１６、１３と、その容器本体１６、１３に溶着されて容器本体１６を閉じる蓋体１５と、容器本体１６、１３内に充填される加圧剤Ｐとからなる加圧製品１１ａの製造方法であって、円筒状の首部１３ｄを有する容器本体１６、１３と、前記首部１３ｄの上端面１３ｆと当接して溶着部Ｙ２を形成する平板部１７とを有し、前記首部１３ｄの上端１３ｆまたは蓋体１５の平板部１７の下面１７ｃのうち、少なくとも一方に環状突起１３ｇを備えた加圧容器１１と、その加圧容器１１に充填する加圧剤Ｐとを準備し、前記容器本体１６、１３の首部１３ｄの上端面１３ｆに蓋体１５を載置し、前記蓋体１５の天面１７ｃにおける、前記環状突起１３ｇと対応する部位より外側（Ｒ）を除く範囲に超音波溶着用のホーンＨを当接させて超音波溶着し、前記容器本体１６、１３内に、蓋体１５の溶着の前または後に加圧剤Ｐを含む内容物を充填することを特徴としている。 The method for producing a pressurized product according to the present invention includes container bodies 16 and 13 made of thermoplastic resin, lids 15 welded to the container bodies 16 and 13 to close the container bodies 16, and inside the container bodies 16 and 13, A method for manufacturing a pressurized product 11a comprising a pressurizing agent P to be filled, comprising container bodies 16 and 13 having a cylindrical neck portion 13d, and a welded portion Y2 formed by abutting the upper end surface 13f of the neck portion 13d. A pressurized container 11 having a flat plate portion 17 formed thereon and provided with an annular projection 13g on at least one of the upper end 13f of the neck portion 13d and the lower surface 17c of the flat plate portion 17 of the lid body 15; The lid body 15 is placed on the upper end surface 13f of the neck portion 13d of the container body 16, 13, and the top surface 17c of the lid body 15 corresponds to the annular projection 13g. A horn H for ultrasonic welding is brought into contact with a range excluding the outer side (R) of the part to be welded, and ultrasonic welding is performed. It is characterized by filling the contents containing

本発明の蓋体の溶着方法は、蓋体の天面における、前記環状突起と対応する部位より外側を除く範囲に超音波溶着用のホーンを当接させて超音波溶着するので、超音波振動を発振するホーンを天面に当接し、加圧したとき、環状突起と対応する部位より外側では、ホーンの振動が伝わりにくい。そのため、蓋体の周囲に流れる振動エネルギーは少なくなる。そのため、溶けた環状突起は口部の上面と蓋体の下面の間に挟まれている範囲に留まり、外周面側へのはみ出しが減る。したがって内容物を充填して蓋体を超音波溶着した加圧製品は、はみ出した樹脂が冷やされてできた樹脂片（溶着くず）によって外観が損なわれない。また、溶着くずによって邪魔されず、溶着部（溶着される部材の当接され、押圧される部位）をより確実に溶着することができ、固着強度が向上し、内容物の漏れの発生が抑制される。 In the lid welding method of the present invention, ultrasonic welding is performed by bringing a horn for ultrasonic welding into contact with a range of the top surface of the lid excluding the outer side of the region corresponding to the annular projection, so that ultrasonic vibration is applied. When the horn that oscillates is brought into contact with the top surface and pressurized, the vibration of the horn is less likely to be transmitted outside the portion corresponding to the annular projection. Therefore, less vibration energy flows around the lid. Therefore, the melted annular projection remains in the range sandwiched between the upper surface of the mouth portion and the lower surface of the lid body, and the protrusion to the outer peripheral surface side is reduced. Therefore, the appearance of a pressurized product in which the content is filled and the cover is ultrasonically welded is not spoiled by resin pieces (welded waste) formed by cooling the protruding resin. In addition, it is possible to more reliably weld the welded part (the part where the member to be welded contacts and is pressed) without being disturbed by the welding debris, improving the fixing strength and suppressing the occurrence of leakage of the contents. be done.

前記ホーンの下面と蓋体の天面のうち、いずれか一方または両方の径が、前記環状突起の径と略同一である場合、またはいずれか一方または両方の前記環状突起と対応する部位より外側が切り欠かれている場合は、振動エネルギーが蓋体を介して環状突起に伝わりやすく、環状突起の溶解が容易になり、蓋体と容器本体とが溶着しやすい。また、ホーンの下面と対応する円の外側、あるいは環状の外周切り欠き部の下方には振動エネルギーが伝わりにくく、特に、環状突起より外側の部位に流れる振動エネルギーは少なくなる。そのため、溶けた環状突起は口部の上面と蓋体の下面の間に挟まれている範囲に留まりやすく、外周面側へのはみ出しが減る。 When the diameter of one or both of the lower surface of the horn and the top surface of the lid is substantially the same as the diameter of the annular projection, or the outer side of the portion corresponding to the annular projection of either one or both When is notched, vibration energy is easily transmitted to the annular projection through the lid body, the annular projection is easily melted, and the lid body and the container body are easily welded. Further, the vibration energy is less likely to be transmitted to the outside of the circle corresponding to the lower surface of the horn or to the lower side of the annular outer peripheral notch, and particularly the vibration energy flowing to the outside of the annular projection is reduced. Therefore, the melted annular projection tends to remain in the range sandwiched between the upper surface of the mouth portion and the lower surface of the lid body, and protruding to the outer peripheral surface side is reduced.

前記ホーンの下面のうち、容器本体の首部の内面より内側の範囲に、空所が設けられている場合は、蓋体のうち環状突起がある範囲に振動エネルギーが伝わりやすく、容器本体の首部の内面に挿入されている部分、とくに蓋体の嵌合部に振動エネルギーが伝わりにくい。それにより蓋体の下部に設けられている部分、とくに被開封部（封盤部）が破断されにくい。 If a hollow space is provided in the lower surface of the horn inside the inner surface of the neck of the container body, the vibration energy is likely to be transmitted to the area where the annular projection is located in the lid, and the neck of the container body. Vibrational energy is less likely to be transmitted to the portion inserted into the inner surface, especially the fitting portion of the lid. As a result, the portion provided in the lower portion of the lid, particularly the unsealable portion (sealing portion), is less likely to break.

前記容器本体が、円筒状の首部を有する外部容器と、前記外部容器の内部に収容され、外部容器の首部と嵌合する首部を有する内部容器とからなり、前記内部容器が、その首部の上端に、外部容器の上端面から上に突出して外部容器の首部の上端面に係止されるフランジを有し、前記蓋体が、外部容器および内部容器の首部の上端に当接する部位を有し、前記蓋体を、外部容器および内部容器の首部の上端に載置し、前記ホーンを蓋体に当接して、前記蓋体を外部容器および内部容器の首部の上端にそれぞれ超音波溶着することにより、外部容器および内部容器の上端開口を密封する場合は、外部容器の溶着部と内部容器の溶着部の高さが異なるにも関わらず、いずれの溶着部も密封性が高い。 The container body includes an outer container having a cylindrical neck, and an inner container that is housed inside the outer container and has a neck that fits with the neck of the outer container. and a flange that protrudes upward from the upper end surface of the outer container and is engaged with the upper end surface of the neck of the outer container. placing the lid on the upper ends of the necks of the outer container and the inner container, bringing the horn into contact with the lids, and ultrasonically welding the lids to the upper ends of the necks of the outer container and the inner container, respectively; Therefore, when sealing the upper end openings of the outer container and the inner container, the welded portions of the outer container and the welded portions of the inner container have high sealing performance, although the heights of the welded portions are different.

すなわち、通常は外側の溶着部と内側の溶着部で高さが異なる場合は、片方のみ（通常は高い内側）に振動エネルギーが集中して他方（通常は低い外側）の溶着が不充分になりがちである。しかし本発明の蓋体の溶着方法では、振動エネルギーが蓋体の天面の外周に拡がるのが抑制されるため、高さが異なる両方の溶着部をいずれも充分に溶着することができる。したがって内容物の漏れが長期にわたって抑制される。 In other words, if the welded part on the outside and the welded part on the inside are different in height, the vibration energy is concentrated only on one side (usually the high inner side), and the other side (usually the low outer side) is welded insufficiently. tend to However, in the lid welding method of the present invention, the spread of the vibration energy to the outer periphery of the top surface of the lid is suppressed, so both welding portions having different heights can be sufficiently welded. Therefore, leakage of contents is suppressed for a long period of time.

前記ホーンの下面のうち、内部容器の首部の内面より内側の範囲に、空所が設けられている場合は、蓋体のうち内部容器に挿入される部分に振動エネルギーが伝わりにくくなる。そのため蓋体の下部に設けられている部分、とくに被開封部（封盤部）が破断されにくい。 If the lower surface of the horn is provided with a space inside the inner surface of the neck of the internal container, the vibration energy is less likely to be transmitted to the portion of the lid that is inserted into the internal container. Therefore, the portion provided in the lower portion of the lid, especially the unsealable portion (sealing portion), is less likely to break.

前記蓋体が、内部容器のフランジの外周と嵌合する外筒部と、内部容器の首部に内挿する内筒部と、内部容器のフランジの上面と当接する平板部とを有し、前記外筒部の下端が外部容器の首部の上端面と当接する場合は、蓋体と外部容器および蓋体と内部容器との密封性が一層確実になる。 The lid has an outer cylindrical portion fitted to the outer periphery of the flange of the inner container, an inner cylindrical portion inserted into the neck portion of the inner container, and a flat plate portion contacting the upper surface of the flange of the inner container, When the lower end of the outer cylindrical portion is in contact with the upper end surface of the neck portion of the outer container, the sealability between the lid and the outer container and between the lid and the inner container is more assured.

本発明の加圧製品の製造方法は、蓋体の天面における、前記環状突起と対応する部位より外側を除く範囲に超音波溶着用のホーンを当接させて超音波溶着するので、超音波振動を発振するホーンを天面に当接し、加圧したとき、環状突起と対応する部位より外側では、ホーンの振動が伝わりにくい。そのため、蓋体の周囲に流れる振動エネルギーは少なくなる。そのため、溶けた環状突起は口部の上面と蓋体の下面の間に挟まれている範囲に留まり、外周面側へのはみ出しが減る。したがってはみ出した樹脂が冷やされてできた樹脂片（溶着くず）によって外観が損なわれない。また、溶着くずによって邪魔されず、溶着部（溶着される部材の当接され、押圧される部位）をより確実に溶着することができ、固着強度が向上し、内容物の漏れの発生が抑制される。 In the method for producing a pressurized product of the present invention, a horn for ultrasonic welding is brought into contact with the top surface of the lid body except for the area outside the region corresponding to the annular projection, and ultrasonic welding is performed. When a horn that oscillates vibration is brought into contact with the top surface and pressurized, the vibration of the horn is less likely to be transmitted outside the portion corresponding to the annular projection. Therefore, less vibration energy flows around the lid. Therefore, the melted annular projection remains in the range sandwiched between the upper surface of the mouth portion and the lower surface of the lid body, and the protrusion to the outer peripheral surface side is reduced. Therefore, the external appearance is not spoiled by resin pieces (welding debris) formed by cooling the protruding resin. In addition, it is possible to more reliably weld the welded part (the part where the member to be welded contacts and is pressed) without being disturbed by the welding debris, improving the fixing strength and suppressing the occurrence of leakage of the contents. be done.

図１Ａは本発明の製造方法で得られた加圧製品を用いた吐出装置の一実施形態を示す断面図、図１Ｂは加圧製品の組み立て前の断面図である。FIG. 1A is a cross-sectional view showing one embodiment of a discharge device using a pressurized product obtained by the manufacturing method of the present invention, and FIG. 1B is a cross-sectional view of the pressurized product before assembly. 図２Ａは本発明の蓋体の溶着方法の一実施形態を示す要部断面図、図２Ｂは溶着後の断面図である。FIG. 2A is a cross-sectional view of a main part showing an embodiment of the lid body welding method of the present invention, and FIG. 2B is a cross-sectional view after welding. 図３は図１Ａの吐出部材の拡大断面図である。FIG. 3 is an enlarged cross-sectional view of the discharge member of FIG. 1A. 本発明の製造方法に用いる加圧剤充填装置の一部断面正面図である。1 is a partially cross-sectional front view of a pressurizing agent filling device used in the manufacturing method of the present invention; FIG. 本発明の溶着方法の他の実施形態を示す要部断面図である。FIG. 4 is a cross-sectional view of a main part showing another embodiment of the welding method of the present invention; 本発明の溶着方法のさらに他の実施形態を示す要部断面図である。FIG. 5 is a cross-sectional view of a main part showing still another embodiment of the welding method of the present invention; 本発明の溶着方法のさらに他の実施形態を示す要部断面図である。FIG. 5 is a cross-sectional view of a main part showing still another embodiment of the welding method of the present invention; 図８Ａは本発明の製造方法で製造する加圧製品の他の実施形態を示す断面図、図８Ｂはその加圧製品に用いる溶着方法の要部断面図である。FIG. 8A is a cross-sectional view showing another embodiment of the pressurized product manufactured by the manufacturing method of the present invention, and FIG. 8B is a main part cross-sectional view of the welding method used for the pressurized product. 本発明の溶着方法の他の実施形態を示す断面図である。FIG. 5 is a cross-sectional view showing another embodiment of the welding method of the present invention; 本発明の加圧製品の製造方法の一実施形態を示す概略工程図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic process drawing which shows one Embodiment of the manufacturing method of the pressurized product of this invention. 製造方法の参考例を示す断面図である。It is sectional drawing which shows the reference example of a manufacturing method.

図１Ａに示す吐出装置１０は、加圧容器（二重加圧容器）１１と、その加圧容器１１に装着される吐出部材１２と、加圧容器１１に充填された原液Ｃおよび加圧剤Ｐとからなる。加圧容器１１に原液Ｃと加圧剤Ｐを充填したものが加圧製品１１ａである。加圧製品１１ａと吐出部材１２は組み立て前のセット品として、あるいは吐出部材１２を加圧製品１１ａの上端にいくらかねじ込んだ、しかも未開封の半結合状態で販売される。加圧製品１１ａは吐出部材１２と共に販売されるほか、交換用として単独でも販売される。その場合は吐出部材１２は繰り返し使用するので、省資源に資する。吐出部材１２も単独で販売されることがある。 A discharge device 10 shown in FIG. 1A includes a pressurized container (double pressurized container) 11, a discharge member 12 attached to the pressurized container 11, a stock solution C and a pressurizing agent filled in the pressurized container 11. P. The pressurized product 11a is obtained by filling the pressurized container 11 with the concentrate C and the pressurizing agent P. The pressurized product 11a and the discharge member 12 are sold as a pre-assembled set or in an unopened, semi-bonded condition with the discharge member 12 partially screwed onto the top of the pressurized product 11a. The pressurized product 11a is sold together with the discharge member 12, and is also sold separately as a replacement. In that case, since the discharge member 12 is used repeatedly, it contributes to resource saving. The ejection member 12 may also be sold separately.

図１Ｂに示す加圧容器１１は、外部容器１３と、その内部に収容されている可撓性を有する内部容器１４と、外部容器１３と内部容器１４を封止するための蓋体（封盤）１５とからなる。バルブやポンプは備えていない。外部容器１３と内部容器１４を組み合わせたものは容器本体１６である。内部容器１４の内部は原液Ｃを充填する原液収容室Ｓｃであり、外部容器１３と内部容器１４の隙間の空間は加圧剤Ｐを充填する加圧剤収容室Ｓｐである（図１Ａ参照）。それらは蓋体１５によって封止されるが、図１Ｂの状態では原液Ｃも加圧剤Ｐも充填されておらず、蓋体１５も溶着されていない。この実施形態では、内部容器１４で原液Ｃと噴射剤Ｐを分離して収容し、吐出部材１２を装着することにより原液Ｃのみ吐出するようにしている。しかし内部容器１４を用いず、容器本体１６に加圧剤Ｐと原液Ｃとを混合して充填するようにしてもよい（図８Ａ、Ｂ、図９参照）。その場合は原液Ｃと加圧剤Ｐが内容物となる。 The pressurized container 11 shown in FIG. 1B includes an outer container 13, a flexible inner container 14 housed therein, and a lid body (sealing plate) for sealing the outer container 13 and the inner container 14. ) 15. It has no valves or pumps. A container body 16 is a combination of the outer container 13 and the inner container 14 . The inside of the inner container 14 is the concentrate storage chamber Sc filled with the concentrate C, and the space between the outer container 13 and the inner container 14 is the pressurizing agent accommodating chamber Sp filled with the pressurizing agent P (see FIG. 1A). . They are sealed by the lid 15, but in the state of FIG. 1B, neither the stock solution C nor the pressurizing agent P is filled, and the lid 15 is not welded. In this embodiment, the concentrate C and the propellant P are separately contained in the inner container 14, and only the concentrate C is discharged by attaching the discharge member 12 thereto. However, the pressurizing agent P and the concentrate C may be mixed and filled in the container body 16 without using the inner container 14 (see FIGS. 8A, 8B and 9). In that case, the undiluted liquid C and the pressurizing agent P are the contents.

図１Ｂは蓋体１５を容器本体１６に被せる前の状態で示している。外部容器１３は底部１３ａと、円筒状の胴部１３ｂと、肩部１３ｃと、円筒状の首部１３ｄとからなる。首部１３ｄの外周には雄ねじ１３ｅが形成されている。首部１３ｄは上端で開口しており、首部１３ｄの上端面１３ｆは蓋体１５を安定して支持し、溶着できるように略平坦にしている。 FIG. 1B shows the state before the lid 15 is put on the container body 16 . The outer container 13 comprises a bottom portion 13a, a cylindrical body portion 13b, a shoulder portion 13c, and a cylindrical neck portion 13d. A male thread 13e is formed on the outer circumference of the neck portion 13d. The neck portion 13d is open at the upper end, and the upper end surface 13f of the neck portion 13d supports the lid body 15 in a stable manner and is substantially flat so that it can be welded.

内部容器１４も外部容器１３と同様に、底部１４ａ、胴部１４ｂ、肩部１４ｃおよび首部１４ｄからなる。首部１４ｄの上端近辺が口部である。内部容器１４の首部１４ｄの外面は外部容器１３の首部１３ｄの内面との間にわずかな隙間を有するように嵌合されている。内部容器１４の底部１４ａは外部容器１３の底部１３ａと当接しており、加圧剤を充填するときや蓋体１５を固着するときなど、内部容器１４が下がらないように支持される。 Like the outer container 13, the inner container 14 also comprises a bottom portion 14a, a body portion 14b, a shoulder portion 14c and a neck portion 14d. The vicinity of the upper end of the neck portion 14d is the mouth portion. The outer surface of the neck portion 14d of the inner container 14 is fitted to the inner surface of the neck portion 13d of the outer container 13 with a slight gap. The bottom portion 14a of the inner container 14 is in contact with the bottom portion 13a of the outer container 13, and is supported so that the inner container 14 does not fall down when filling the pressurizing agent or fixing the lid 15.

図２Ａは容器本体１６に蓋体１５を被せた状態である。蓋体１５の天面１７ｃには超音波溶着用のホーンＨが当接されている。蓋体１５の溶着はまだ行われていない。このとき原液収容室Ｓｃに原液Ｃは充填されているが、加圧剤収容室Ｓｐに加圧剤Ｐは充填されていない。外部容器１３の首部１３ｄの上端面１３ｆには、超音波溶着のときに蓋体１５との当接圧を高くして溶解しやすくし、蓋体１５と一体にするための溶着部(図２ＢのＹ２）をつくる環状突起１３ｇが形成されている。環状突起１３ｇは断面略三角形で、とくに二等辺三角形ないし正三角形である。 FIG. 2A shows a state in which the container body 16 is covered with the lid 15 . A horn H for ultrasonic welding is in contact with the top surface 17c of the lid 15. As shown in FIG. Welding of the lid body 15 has not yet been performed. At this time, the undiluted solution C is filled in the undiluted solution storage chamber Sc, but the pressurizing agent P is not filled in the pressurizing agent storage chamber Sp. On the upper end surface 13f of the neck portion 13d of the outer container 13, a welding portion (Fig. 2B An annular projection 13g is formed to form Y2). The annular projection 13g has a substantially triangular cross section, particularly an isosceles or equilateral triangle.

この実施形態では環状突起１３ｇは首部１３ｄの厚みの範囲の略中央に設けている。蓋体１５側に環状突起を設け、首部１３ｄの上端面１３ｆは平坦とすることもできる。上端面１３ｆの内部側には傾斜部１３ｈが複数個設けられており、超音波溶着のときに溶けた樹脂が冷やされてできた樹脂片（溶着くず）がはみ出ないように収容するための空間としている。 In this embodiment, the annular protrusion 13g is provided substantially in the center of the thickness range of the neck portion 13d. An annular protrusion may be provided on the lid body 15 side, and the upper end face 13f of the neck portion 13d may be made flat. A plurality of inclined portions 13h are provided on the inner side of the upper end surface 13f, and a space for accommodating resin pieces (welding waste) formed by cooling the resin melted during ultrasonic welding so as not to protrude. and

図２Ａに示すように、内部容器１４の首部１４ｄの上部は外部容器１３の上端面１３ｆより突出しており、その突出している部位に外部容器１３の上端面１３ｆと係合するフランジ１４ｆが形成されている。フランジ１４ｆの厚さ（半径方向の寸法）は、外部容器１３の首部１３ｄの厚さの１／３～１／２程度である。そのため、フランジ１４ｆを外部容器１３の首部１３ｄの上端面１３ｆに係止させたとき、外部容器１３の首部１３ｄの上端面１３ｆは外側の部分が覆われずに残る。前記外部容器１３の上端の環状突起１３ｇは、その外側の部分に設けられている。内部容器１４の首部１４ｄの上端面１４ｅにも、超音波溶着のときに蓋体１５との当接圧を高くして蓋体１５との溶着部（図２ＢのＹ１）をつくるための環状突起１４ｇが形成されている。この実施形態ではこの環状突起１４ｇも断面略三角形、とくに二等辺三角形ないし正三角形としている。 As shown in FIG. 2A, the upper portion of the neck portion 14d of the inner container 14 protrudes from the upper end surface 13f of the outer container 13, and a flange 14f that engages with the upper end surface 13f of the outer container 13 is formed at the projecting portion. ing. The thickness (dimension in the radial direction) of the flange 14f is about 1/3 to 1/2 of the thickness of the neck portion 13d of the outer container 13. As shown in FIG. Therefore, when the flange 14f is engaged with the upper end surface 13f of the neck portion 13d of the outer container 13, the outer portion of the upper end surface 13f of the neck portion 13d of the outer container 13 remains uncovered. An annular projection 13g at the upper end of the outer container 13 is provided on its outer portion. Also on the upper end surface 14e of the neck portion 14d of the internal container 14, an annular projection is formed to increase the contact pressure with the lid 15 during ultrasonic welding to form a welded portion (Y1 in FIG. 2B) with the lid 15. 14g are formed. In this embodiment, the annular projection 14g also has a substantially triangular cross-section, particularly an isosceles triangle or an equilateral triangle.

内部容器１４のフランジ１４ｆの下面には、半径方向に延びる加圧剤充填用の横溝１４ｈが等間隔で４カ所に形成されている。さらに内部容器１４の首部１４ｄの外周面には、その横溝１４ｈと連通する縦溝１４ｉが形成されている。縦溝１４ｉは横溝１４ｈから肩部１４ｃの上端まで延びており、それにより加圧剤Ｐを加圧剤収容室Ｓｐ内に充填しやすい。 In the lower surface of the flange 14f of the internal container 14, four lateral grooves 14h for filling the pressurizing agent extending in the radial direction are formed at equal intervals. Further, a longitudinal groove 14i communicating with the lateral groove 14h is formed on the outer peripheral surface of the neck portion 14d of the inner container 14. As shown in FIG. The longitudinal groove 14i extends from the lateral groove 14h to the upper end of the shoulder portion 14c, thereby facilitating the filling of the pressurizing agent P into the pressurizing agent storage chamber Sp.

外部容器１３および内部容器１４はいずれも合成樹脂製、とくにポリエチレンテレフタレート、ポリエチレンナフタレート、ポリエチレン、ポリプロピレンなどの熱可塑性樹脂製である。これらは、たとえば外部容器用のプリフォームの中に内部容器用のプリフォームを入れ、首部１３ｄ、１４ｄの下端より下側を同時にブロー成形することにより製造することができる。とくに所定形状のプリフォームをインジェクション成形し、ついでブロー成形するインジェクション・ブロー成形法が好ましい。 Both the outer container 13 and the inner container 14 are made of synthetic resin, particularly thermoplastic resin such as polyethylene terephthalate, polyethylene naphthalate, polyethylene and polypropylene. These can be manufactured, for example, by inserting a preform for the inner container into a preform for the outer container and simultaneously blow-molding the portions below the lower ends of the necks 13d and 14d. Particularly preferred is an injection blow molding method in which a preform having a predetermined shape is injection molded and then blow molded.

前記蓋体１５は、内部容器１４の首部１４ｄ内に挿入される有底筒状の封止部１５ａと、その上端に連続する環状のフランジ１５ｂとからなる。封止部１５ａの上部は内部容器１４の首部１４ｄの内面と隙間をもって嵌合する内筒部１５ａ１であり、下部は吐出部材１２のバルブ２１を着脱自在に収容し、シール材（図１の符号２８）を介して嵌合するバルブ収容部（嵌合筒部）１５ａ２である。バルブ収容部１５ａ２は内筒部１５ａ１より小径である。 The lid body 15 is composed of a bottomed cylindrical sealing portion 15a inserted into the neck portion 14d of the internal container 14 and an annular flange 15b continuing to the upper end of the sealing portion 15a. The upper portion of the sealing portion 15a is an inner cylindrical portion 15a1 that is fitted to the inner surface of the neck portion 14d of the inner container 14 with a gap. 28) is a valve accommodating portion (fitting cylindrical portion) 15a2. The valve accommodating portion 15a2 has a smaller diameter than the inner cylindrical portion 15a1.

蓋体１５のフランジ１５ｂは、封止部１５ａの上端から半径方向外向きに拡がる平板部１７と、その平板部１７の外縁から下向きに延びる外筒部１７ａとからなる。平板部１７の下面１７ｂは内部容器１４の首部１４ｄの上端面１４ｅ、とくに環状突起１４ｇと当接して溶着部（図２Ｂの符号Ｙ１）を形成しシールする部位で、外筒部１７ａの下面１７ａ１は外部容器１３の首部１３ｄの上端面１３ｆ、とくに環状突起１３ｇと当接して溶着部（図２Ｂの符号Ｙ２）を形成しシールする部位である。内部容器１４の溶着部Ｙ１は、原液収容室Ｓｃと加圧剤収容室Ｓｐの間をシールする。外部容器１３の溶着部Ｙ２は、加圧剤収容部Ｓｐと外部の間をシールする。平板部１７の天面１７ｃ（フランジ１５ｂの天面）は超音波溶着機の超音波振動を発振するホーンＨとの当接面である。ホーンＨは円柱状で、下面Ｈ１は平坦である。 The flange 15b of the lid 15 is composed of a flat plate portion 17 extending radially outward from the upper end of the sealing portion 15a and an outer cylindrical portion 17a extending downward from the outer edge of the flat plate portion 17. As shown in FIG. The lower surface 17b of the flat plate portion 17 is a portion that abuts against the upper end surface 14e of the neck portion 14d of the inner container 14, particularly the annular projection 14g, to form a welded portion (symbol Y1 in FIG. 2B) for sealing. is a portion that abuts against the upper end surface 13f of the neck portion 13d of the outer container 13, particularly the annular projection 13g, to form a welded portion (symbol Y2 in FIG. 2B) for sealing. The welded portion Y1 of the inner container 14 seals between the undiluted solution storage chamber Sc and the pressurizing agent storage chamber Sp. The welded portion Y2 of the outer container 13 seals between the pressurizing agent containing portion Sp and the outside. A top surface 17c of the flat plate portion 17 (top surface of the flange 15b) is a contact surface with a horn H for oscillating ultrasonic vibrations of an ultrasonic welding machine. The horn H is cylindrical and has a flat lower surface H1.

図２Ａの溶着方法の特徴は、ホーンＨの下面Ｈ１が蓋体１５の天面１７ｃの全体に当接せず、天面１７ｃのうち、外側の環状突起１３ｇと対応する部位、とくに断面の三角形の頂点より外側の円環状の範囲ＲではホーンＨが当接しない点である。すなわち、ホーンＨの外径Ｄが蓋体１５の天面１７ｃの径より小さく、容器本体１３の環状突起１３ｇの径（平面視の径）と同一か、それよりいくらか大きい程度である。そして［天面１７ｃの外径＞ホーンＨの下面の外径Ｄ≧外部容器の環状突起１３ｇの径］となっている。なお、外筒部１７ａの外径は外部容器１３の径（雄ねじ１３ｅを除く）と略同一であるか、わずかに小さい。 A feature of the welding method of FIG. 2A is that the lower surface H1 of the horn H does not contact the entire top surface 17c of the lid 15, and the portion of the top surface 17c corresponding to the outer annular projection 13g, particularly the triangular cross-section, does not contact the entire top surface 17c. The point is that the horn H does not come into contact with the annular range R outside the vertex of . That is, the outer diameter D of the horn H is smaller than the diameter of the top surface 17c of the lid 15, and is the same as or slightly larger than the diameter of the annular projection 13g of the container body 13 (diameter in plan view). Then, [the outer diameter of the top surface 17c>the outer diameter D of the lower surface of the horn H≧the diameter of the annular projection 13g of the outer container]. The outer diameter of the outer cylindrical portion 17a is substantially the same as or slightly smaller than the diameter of the outer container 13 (excluding the male screw 13e).

蓋体１５の超音波溶着は、内部容器１４内の原液収容室Ｓｃに原液Ｃを充填し、容器本体１６の開口に蓋体１５を被せた後、溶着用のホーンＨを組み込んだ加圧剤充填装置（図４の符号３０参照）によって行うことができる。超音波溶着は、図２Ａの外部容器１３と内部容器１４の間の加圧剤収容室Ｓｐに加圧剤Ｐをアンダーカップ充填した後に行う。 The ultrasonic welding of the lid 15 is performed by filling the concentrate C into the concentrate storage chamber Sc in the inner container 14, covering the opening of the container body 16 with the lid 15, and then applying a pressurizing agent incorporating a horn H for welding. It can be done by a filling device (see numeral 30 in FIG. 4). Ultrasonic welding is performed after undercup filling the pressurizing agent P in the pressurizing agent storage chamber Sp between the outer container 13 and the inner container 14 in FIG. 2A.

図２Ａに示すように、ホーンＨの外径Ｄが蓋体１５の天面１７ｃより小さいので、ホーンＨが平板部１７の天面１７ｃに当接して下方に押圧し、振動エネルギーを天面１７ｃから下方に付与したとき、振動エネルギーが外側に拡がりにくく、外筒部１７ａの外周側に流れる振動エネルギーが少なくなる。そのため、付与された振動エネルギーは下方に効率よく流れ、内部容器１４と蓋体１５の間の溶着部Ｙ１と外部容器１３と蓋体１５の間の溶着部Ｙ２を同時に溶着することができる。さらに溶着部Ｙ２で溶けた樹脂のはみ出しが減り、固化した溶着くずによって邪魔されずに溶着することができる（図２Ｂ参照）。 As shown in FIG. 2A, since the outer diameter D of the horn H is smaller than the top surface 17c of the lid 15, the horn H comes into contact with the top surface 17c of the flat plate portion 17 and presses it downward, and the vibration energy is transferred to the top surface 17c. When applied downward from the outer cylinder portion 17a, the vibrational energy is less likely to spread outward, and less vibrational energy flows to the outer peripheral side of the outer cylindrical portion 17a. Therefore, the applied vibrational energy flows downward efficiently, and the welded portion Y1 between the inner container 14 and the lid 15 and the welded portion Y2 between the outer container 13 and the lid 15 can be welded at the same time. Furthermore, the protrusion of the melted resin at the welding portion Y2 is reduced, and welding can be performed without being hindered by solidified welding debris (see FIG. 2B).

溶着した後は、図２Ｂに示すように、外筒部１７ａの下面１７ａ１が外部容器１３の上端面１３ｆと溶着され、平板部１７の下面１７ｂが内部容器１４の上端面１４ｅと溶着され、加圧製品１１ａとなる。そして前述のように、溶融した樹脂が両者の隙間から外部にはみ出すことがない。また、２つの溶着部Ｙ１、Ｙ２は連続的に充分に溶着形成されるので、長期間にわたり加圧剤Ｐが加圧剤収容室Ｓｐから漏れ出すことがなく、また原液Ｃが原液収容室Ｓｃから漏れ出すことがない。溶着時に内側へはみ出した樹脂は、傾斜部（傾斜溝）１３ｈに蓄えられ、加圧剤収容室Ｓｐに流れ込むことはない。 After the welding, as shown in FIG. 2B, the lower surface 17a1 of the outer cylindrical portion 17a is welded to the upper end surface 13f of the outer container 13, the lower surface 17b of the flat plate portion 17 is welded to the upper end surface 14e of the inner container 14, and the heat is applied. It becomes the pressure product 11a. Further, as described above, the melted resin does not protrude outside from the gap between the two. In addition, since the two welded portions Y1 and Y2 are sufficiently welded continuously, the pressurizing agent P does not leak from the pressurizing agent storage chamber Sp for a long period of time, and the concentrate C does not leak from the concentrate storage chamber Sc. does not leak from Resin that protrudes inward during welding is stored in the slanted portion (slanted groove) 13h and does not flow into the pressurizing agent storage chamber Sp.

なお、前記封止部１５ａの底部、すなわちバルブ収容部１５ａ２の底部１５ｃには、周囲に比して厚肉にされた受圧部１５ｄ１を備えた被開封部１５ｄが設けられている。被開封部１５ｄの周囲は、一部（連続部）１５ｅを除き、環状溝などの弱め線１５ｆで囲まれている。前記受圧部１５ｄ１は被開封部１５ｄの上面全体に設けられ、弱め線１５ｆは受圧部１５ｄ１の周囲を囲むように、底部１５ｃの上面に形成されている。弱め線１５ｆはたとえばＶ溝からなる。被開封部１５ｄの連続部１５ｅには、補強部（補強リブ）１５ｇが半径方向外向きに延びるように設けられている。 At the bottom of the sealing portion 15a, that is, at the bottom 15c of the valve accommodating portion 15a2, there is provided an unsealable portion 15d having a pressure receiving portion 15d1 thicker than the surrounding portion. The circumference of the unsealable portion 15d is surrounded by a weakening line 15f such as an annular groove, except for a portion (continuous portion) 15e. The pressure receiving portion 15d1 is provided on the entire upper surface of the unsealable portion 15d, and the weakening line 15f is formed on the upper surface of the bottom portion 15c so as to surround the pressure receiving portion 15d1. Weakening line 15f is formed of, for example, a V-groove. A continuous portion 15e of the unsealable portion 15d is provided with a reinforcing portion (reinforcing rib) 15g extending radially outward.

蓋体１５の材料は外部容器１３や内部容器１４との熱接合性が高い熱可塑性樹脂が用いられ、外部容器１３や内部容器１４と同じ材料を用いることが好ましい。図２Ｂに示すように、蓋体１５で原液収容室Ｓｃと加圧剤収容室Ｓｐを封止すると共に、内部容器１４および外部容器１３の両方に固着することにより、内容物（原液Ｃ、加圧剤Ｐ）を長期間安全に、漏れないように保管しておくことができる。 The material of the lid 15 is a thermoplastic resin having high thermal bondability with the outer container 13 and the inner container 14, and preferably the same material as the outer container 13 and the inner container 14 is used. As shown in FIG. 2B, the lid body 15 seals the undiluted solution storage chamber Sc and the pressurizing agent storage chamber Sp, and by adhering to both the inner container 14 and the outer container 13, the contents (undiluted solution C, added The pressurizing agent P) can be safely and leak-tightly stored for a long period of time.

原液Ｃとしては、洗顔剤、洗浄剤、入浴剤、保湿剤、クレンジング剤、日焼け止め、化粧水、シェービング剤、脱毛剤、制汗剤、殺菌消毒剤、害虫忌避剤などの皮膚用品、トリートメント剤、スタイリング剤、染毛剤などの頭髪用品などの人体用品、ホイップクリーム、オリーブオイルなどの食品、消臭剤、芳香剤、殺虫剤、防虫剤、花粉除去剤、殺菌剤などの家庭用品、潤滑剤などの工業用品などである。但し、これらの用途に限られるわけではない。原液Ｃは被開封部１５ｄの内面側と接触させるのが好ましい。それにより蓋体１５と容器本体１６との溶着時に被開封部１５ｄが原液Ｃで冷やされ、被開封部１５ｄが熱で溶ける問題を解消できる。 Concentrate solution C includes skin products and treatment agents such as facial cleansers, detergents, bath agents, moisturizers, cleansers, sunscreens, lotions, shaving agents, hair removers, antiperspirants, disinfectants, insect repellents, etc. , Styling agents, hair products such as hair products, food products such as whipped cream and olive oil, household products such as deodorants, air fresheners, insecticides, insect repellents, pollen removers and disinfectants, lubricants industrial goods such as chemicals. However, it is not limited to these uses. The undiluted liquid C is preferably brought into contact with the inner surface of the unsealable portion 15d. As a result, the portion to be unsealed 15d is cooled by the concentrate C when the lid 15 and the container body 16 are welded together, and the problem of the portion to be unsealed 15d melting due to heat can be resolved.

加圧剤Ｐとしては窒素ガス、圧縮空気、炭酸ガスなどの圧縮ガスが好ましい。加圧剤により加圧容器１１内の圧力を０．１～０．５ＭＰａ（２５℃、ゲージ圧）、とくに炭酸飲料と同程度の圧力０．３～０．５ＭＰａ（２５℃、ゲージ圧）にするのが好ましい。また、外部容器１３の容量は３０～５００ｍｌであることが好ましい。内部容器（原液収容室Ｓｃ）１４の容量は２０～３００ｍｌ程度が好ましい。加圧剤収容室Ｓｐの容量は１０～２００ｍｌ程度が好ましい。 As the pressurizing agent P, a compressed gas such as nitrogen gas, compressed air, or carbon dioxide gas is preferable. The pressure in the pressurized container 11 is set to 0.1 to 0.5 MPa (25° C., gauge pressure) by a pressurizing agent, especially to 0.3 to 0.5 MPa (25° C., gauge pressure), which is about the same as that of carbonated beverages. preferably. Also, the capacity of the external container 13 is preferably 30 to 500 ml. The capacity of the internal container (concentrate solution storage chamber Sc) 14 is preferably about 20 to 300 ml. The capacity of the pressurizing agent storage chamber Sp is preferably about 10 to 200 ml.

上記のように、加圧容器１１を用いた加圧製品１１ａは部品数が少なく、バルブを備えていないので、安価に製造することができる。そして加圧剤Ｐの圧力が低く、炭酸飲料などと同程度であるので、消費者が持ち運んだり、流通業者が配送したりするときに安全である。また、万一、外部容器１３にひびが入っても、加圧剤Ｐが漏れるだけで内部容器１４内の原液Ｃは漏れない。そのため一層安全である。 As described above, the pressurized product 11a using the pressurized container 11 has a small number of parts and does not have a valve, so it can be manufactured at low cost. Since the pressure of the pressurizing agent P is low and comparable to that of carbonated beverages, it is safe for consumers to carry and for distributors to deliver. Further, even if the outer container 13 should crack, only the pressurizing agent P leaks and the concentrate C in the inner container 14 does not leak. It is therefore safer.

つぎに図３を参照して、図１Ａの吐出部材１２を説明する。前記吐出部材１２は、外部容器１３の首部１３ｄの雄ねじ１３ｅと螺合するキャップ（装着部）２０と、そのキャップ２０によって保持されるバルブ２１と、バルブ２１のステム２２に装着される操作ボタン（操作部、アクチュエータ）２３とからなる。キャップ２０は有底筒状で、内周面に雌ねじが形成されている。そして上底２０ａの下側に、バルブ２１のハウジング２４の上部を保持する筒状のバルブ保持部１８ａを備えたバルブホルダ１８が取り付けられている。 3, the ejection member 12 of FIG. 1A will be described. The discharge member 12 includes a cap (mounting portion) 20 screwed onto the external thread 13e of the neck portion 13d of the outer container 13, a valve 21 held by the cap 20, and an operation button (mounted on the stem 22 of the valve 21). It consists of an operation part, an actuator) 23 . The cap 20 has a cylindrical shape with a bottom, and has a female thread formed on its inner peripheral surface. A valve holder 18 having a cylindrical valve holding portion 18a for holding the upper portion of the housing 24 of the valve 21 is attached to the lower side of the upper base 20a.

バルブ２１は、有底筒状のハウジング２４と、その内部に上下移動自在に収容される前述のステム２２と、そのステム２２を上向きに付勢するバネ２５と、ハウジング２４の上端とバルブホルダ１８のラバー押さえ１８ｂの間に介在されるステムラバー２６とからなる公知の基本構造を有する。さらにこの実施形態では、ハウジング２４の下端に下向きに突出する略円柱状の開封部２７が設けられている。開封部２７は蓋体１５の下部に設けられる被開封部１５ｄ（図２Ｂ参照）を破断して開封する部分である。ハウジング２４の下部外周にＯリングなどのシール部材２８が装着されている。 The valve 21 includes a cylindrical housing 24 with a bottom, the above-described stem 22 housed therein so as to be vertically movable, a spring 25 for urging the stem 22 upward, an upper end of the housing 24 and a valve holder 18. It has a known basic structure consisting of a stem rubber 26 interposed between rubber retainers 18b. Further, in this embodiment, a substantially cylindrical opening portion 27 that protrudes downward is provided at the lower end of the housing 24 . The unsealing portion 27 is a portion that is opened by breaking the unsealable portion 15d (see FIG. 2B) provided in the lower portion of the lid 15. As shown in FIG. A sealing member 28 such as an O-ring is attached to the lower outer circumference of the housing 24 .

シール部材２８は、開封時および開封後に蓋体１５のバルブ収容部１５ａ２の内周面とハウジング２４の間をシールするものである。開封部２７の中心にはハウジング２４内部と連通する深穴２７ｂが形成されており、開封部２７にはその深穴２７ｂの内部と外部を連通する横孔２７ｃが形成されている。横孔２７ｃは開封後にハウジング２４内と内部容器１４内の原液室Ｓｃとを連通して、吐出される原液の通路となる。横孔２７ｃは破断した被開封部１５ｄにより塞がれないため、安定した吐出状態が維持される。横孔２７ｃに代えて、開封部２７の中心に底面２７ａに達する縦孔を形成することもできる。また、横孔と縦孔を形成してもよい。 The sealing member 28 seals between the inner peripheral surface of the valve accommodating portion 15a2 of the lid 15 and the housing 24 during and after opening. A deep hole 27b communicating with the inside of the housing 24 is formed in the center of the unsealable portion 27, and a horizontal hole 27c is formed in the unsealable portion 27 to communicate the inside and the outside of the deep hole 27b. After opening, the lateral hole 27c communicates the inside of the housing 24 with the stock solution chamber Sc in the internal container 14, and serves as a passage for the stock solution to be discharged. Since the horizontal hole 27c is not blocked by the broken unsealable portion 15d, a stable discharge state is maintained. Instead of the horizontal hole 27c, a vertical hole can be formed in the center of the opening portion 27 to reach the bottom surface 27a. Also, a horizontal hole and a vertical hole may be formed.

開封部２７の底面２７ａの高さ方向の位置は、キャップ２０を外部容器１３の雄ねじに１～２回程度螺合させたときに受圧部１５ｄ１（図２Ｂ参照）と当接する位置である。したがって出荷時および流通時にはキャップ２０を緩く螺合させて被開封部１５ｄを破断せず、シール状態のまま吐出部材１２と加圧容器１１とを仮結合させておくことができる。そのため、購入した消費者はキャップ２０を数回回してねじ込むだけで容易に開封することができる。 The position in the height direction of the bottom surface 27a of the unsealing portion 27 is the position at which the cap 20 comes into contact with the pressure receiving portion 15d1 (see FIG. 2B) when the cap 20 is screwed onto the male screw of the outer container 13 once or twice. Accordingly, during shipping and distribution, the cap 20 is loosely screwed to prevent the unsealable portion 15d from being broken, and the discharge member 12 and the pressurizing container 11 can be temporarily joined in a sealed state. Therefore, the purchased consumer can easily open the cap 20 by screwing it in several turns.

使用者が購入した吐出装置１０を使用する場合、まずキャップ２０を外部容器の雄ねじ１３ｅにねじ込む。それによりキャップ２０全体およびバルブ２１が下降し、開封部２７の底面２７ａが被開封部１５ｄを押し下げる。それにより被開封部１５ｄは弱め線１５ｆで破断され、バルブ収容部１５ａ２の底部１５ｃを突き破り、ハウジング２４内と原液収容室Ｓｃとを連通する。その後は操作ボタン２３を押し下げることにより、加圧剤Ｐの圧力によって原液Ｃを吐出することができる。 When using the discharge device 10 purchased by the user, the cap 20 is first screwed onto the external thread 13e of the outer container. As a result, the entire cap 20 and the valve 21 are lowered, and the bottom surface 27a of the unsealable portion 27 pushes down the unsealable portion 15d. As a result, the unsealable portion 15d is broken at the weakened line 15f, breaks through the bottom portion 15c of the valve accommodating portion 15a2, and communicates the inside of the housing 24 with the concentrated solution accommodating chamber Sc. After that, the undiluted solution C can be discharged by the pressure of the pressurizing agent P by pressing the operation button 23 .

つぎに図４を参照して前述の加圧剤の充填と溶着に用いられる加圧剤充填装置の一例を説明する。図４の加圧剤充填装置３０は、ベース３１と、そのベース３１に設けられる昇降台３２と、その昇降台３２の上方に配置される筒状の充填具３３と、その充填具３３の上部開口を閉じ、充填具３３内に昇降自在に設けられる超音波溶着用のホーンＨとからなる。充填具３３はベース２１から立ち上がる２本の支柱３５によって高さ調節自在に支持されている。充填具３３の下端にはシール材３６が設けられ、外部容器１３の肩部１３ｃに気密に当接する。ホーンＨは流体シリンダまたはモータなどの駆動源を備えた昇降機構を介して超音波発振器に取り付けられている。 Next, with reference to FIG. 4, an example of a pressurizing agent filling device used for filling and welding the above-described pressurizing agent will be described. The pressurizing agent filling device 30 shown in FIG. It consists of a horn H for ultrasonic welding, which closes the opening and is provided in the filler 33 so as to be able to move up and down. The filling tool 33 is supported by two supports 35 rising from the base 21 so as to be adjustable in height. A sealing member 36 is provided at the lower end of the filling tool 33 and abuts against the shoulder portion 13c of the outer container 13 in an airtight manner. The horn H is attached to the ultrasonic oscillator via an elevating mechanism having a driving source such as a fluid cylinder or a motor.

ホーンＨは、前述のように充填具３３内をシールしながら上下に摺動できるように中部Ｈｍが充填具３３の内径に合わせられている。また、ホーンＨは超音波発振器から振動エネルギーを下側に向けて増幅できるように、上部Ｈｕから中部Ｈｍにかけて縮径し、さらに中部Ｈｍから下部Ｈｂにかけて縮径しており、下端近辺３８は外部容器１３の環状突起１３ｇの径に合わせて細くされている。 The middle portion Hm of the horn H is matched with the inner diameter of the filler 33 so that it can slide up and down while sealing the inside of the filler 33 as described above. Further, the horn H has a diameter reduced from the upper part Hu to the middle part Hm and further from the middle part Hm to the lower part Hb so that the vibration energy from the ultrasonic oscillator can be amplified downward. It is narrowed according to the diameter of the annular protrusion 13g of the container 13. As shown in FIG.

図５に示す溶着方法は、ホーンＨの下面Ｈ１に略円柱状の空所Ｈａを設け、下部近辺３８を厚肉円筒状としている点が特徴である。ホーンＨの下部近辺３８の外径Ｄは、図２Ａのホーンと同様に外部容器１３の上端の環状突起１３ｇと略同径であり、空所Ｈａの内径Ｄ１は内部容器１４の首部１４ｄの内径と略同径である。他は図２Ａの溶着方法と同様である。 The welding method shown in FIG. 5 is characterized in that a substantially cylindrical void Ha is provided in the lower surface H1 of the horn H and a thick cylindrical portion 38 is provided near the lower portion. The outer diameter D of the lower portion 38 of the horn H is substantially the same diameter as the annular projection 13g at the upper end of the outer container 13, similarly to the horn of FIG. 2A. and approximately the same diameter. Others are the same as the welding method of FIG. 2A.

この溶着方法では、蓋体１５の天面１７ｃにホーンＨを当接して振動エネルギーを付与したとき、振動エネルギーが外側や内側に広がらず、ほぼまっすぐ下に伝わる。そのため、内部容器１４と蓋体１５の間の溶着部Ｙ１と外部容器１３と蓋体１５の間の溶着部Ｙ２を同時に溶着することができ、さらに、外部容器１３と蓋体１５の間の溶着部で溶けた樹脂の外側および内側へのはみ出しが減り、固化した溶着くずによって邪魔されずに溶着することができる。また、外観もよくなる。また、振動エネルギーは内筒部１５ａ１から底部１５ｃに流れにくくなり、消費者が被開封部１５ｄを開封しやすくするために設けられている弱め線１５ｆの溶解を防止することができる。 In this welding method, when the horn H is brought into contact with the top surface 17c of the lid 15 and vibrational energy is imparted, the vibrational energy does not spread outward or inward, but is transmitted substantially straight downward. Therefore, the welded portion Y1 between the inner container 14 and the lid 15 and the welded portion Y2 between the outer container 13 and the lid 15 can be welded at the same time. The protrusion of melted resin to the outside and inside is reduced, and welding can be performed without being hindered by solidified welding debris. Also, the appearance is improved. In addition, the vibrational energy is less likely to flow from the inner cylindrical portion 15a1 to the bottom portion 15c, thereby preventing the weakening wire 15f provided to facilitate opening of the unsealable portion 15d by the consumer from melting.

図６に示す溶着方法では、蓋体１５のフランジ１５ｂの天面、すなわち平板部１７の天面１７ｃの外周に、断面矩形状の外周切り欠き部１７ｄが形成されている点である。そのため、外周切り欠き部１７ｄより径が大きいものであれば、下面が平坦な円柱状を呈する一般的なホーンＨを使用することができる。なお、外周切り欠き部１７ｄの立ち壁１７ｄ１は、環状突起１３ｇの頂点の位置と対応している。この溶着方法においても、外部容器１３の環状突起１３ｇより外側の範囲には超音波エネルギーが伝わりにくい。そのため、内部容器１４と蓋体１５の間の溶着部Ｙ１と外部容器１３と蓋体１５の間の溶着部Ｙ２を同時に溶着することができる。さらに、外部容器１３と蓋体１５の間の溶着部で溶けた樹脂の外側および内側へのはみ出しが減り、固化した溶着くずによって邪魔されずに溶着することができる。また、外観もよくなる。 In the welding method shown in FIG. 6, the top surface of the flange 15b of the lid 15, that is, the top surface 17c of the flat plate portion 17 is formed with an outer peripheral notch portion 17d having a rectangular cross section. Therefore, a general horn H having a cylindrical shape with a flat lower surface can be used as long as the diameter is larger than that of the outer peripheral notch portion 17d. The standing wall 17d1 of the outer peripheral notch 17d corresponds to the position of the apex of the annular projection 13g. Also in this welding method, the ultrasonic energy is less likely to be transmitted to the range outside the annular protrusion 13g of the outer container 13. As shown in FIG. Therefore, the welded portion Y1 between the inner container 14 and the lid 15 and the welded portion Y2 between the outer container 13 and the lid 15 can be welded at the same time. Furthermore, the melted resin at the welded portion between the outer container 13 and the lid body 15 is less likely to protrude outward and inward, and welding can be performed without being hindered by solidified welding debris. Also, the appearance is improved.

図７に示す溶着方法では、蓋体１５の天面１７ｃに外周切り欠き部１７ｄを形成したことに加えて、内筒部１５ａ１の上端角部に内周切り欠き部３３ａを形成している。そのため、振動エネルギーは内筒部１５ａ１からバルブ収容部１５ａ２の底部１５ｃ側に流れにくくなり、消費者が被開封部１５ｄを開封しやすくするために設けられている弱め線１５ｆの溶解を防止することができる。 In the welding method shown in FIG. 7, in addition to forming an outer peripheral cutout portion 17d on the top surface 17c of the lid 15, an inner peripheral cutout portion 33a is formed at the upper end corner of the inner cylindrical portion 15a1. Therefore, the vibration energy is less likely to flow from the inner cylindrical portion 15a1 to the bottom portion 15c side of the valve accommodating portion 15a2, thereby preventing the melting of the weakening wire 15f provided for making it easier for the consumer to open the unsealable portion 15d. can be done.

図８Ａに示す加圧製品４０は、内部容器を備えておらず、外部容器１３がそのまま容器本体となっている。そして蓋体１５によりバルブ２１を取り付けており、その蓋体１５は外部容器１３の首部１３ｄの上端面１３ｆに超音波溶着されている。バルブ２１には、ディップチューブ４１が装着されている。図８Ｂに示すように、蓋体１５は水平に広がる平板部１７と、外部容器１３の首部１３ｄの内面に嵌合される嵌合部４２およびその内側のバルブ保持部４２ａとからなる。バルブ保持部４２ａにバルブ２１のハウジング２４が取り付けられており、嵌合部４２の外周面にＯリング溝４３が形成され、その中に収容されたＯリング４４が容器本体（外部容器１３）と蓋体１５の隙間をシールしている。 The pressurized product 40 shown in FIG. 8A does not have an inner container, and the outer container 13 serves as the container body as it is. The valve 21 is attached to the lid 15, and the lid 15 is ultrasonically welded to the upper end face 13f of the neck portion 13d of the outer container 13. As shown in FIG. A dip tube 41 is attached to the valve 21 . As shown in FIG. 8B, the lid 15 is composed of a horizontally extending flat plate portion 17, a fitting portion 42 fitted to the inner surface of the neck portion 13d of the outer container 13, and a valve holding portion 42a inside thereof. The housing 24 of the valve 21 is attached to the valve holding portion 42a, and an O-ring groove 43 is formed on the outer peripheral surface of the fitting portion 42, and the O-ring 44 accommodated therein is connected to the container body (outer container 13). The gap of the lid 15 is sealed.

外部容器１３の首部１３ｄの上端面１３ｆには、同心状に２本の環状突起１３ｇ１、１３ｇ２が形成されている。そしてホーンＨの外径Ｄは、外部容器１３における外側の環状突起１３ｇ１と略同径である。また、ホーンＨは、外部容器１３の首部１３ｄの内面４５と対応する部位の近辺より内側を空洞４６にしている。 Two annular protrusions 13g1 and 13g2 are concentrically formed on the upper end surface 13f of the neck portion 13d of the outer container 13. As shown in FIG. The outer diameter D of the horn H is approximately the same diameter as the outer annular projection 13g1 of the outer container 13. As shown in FIG. Further, the horn H has a cavity 46 inside from the vicinity of the portion corresponding to the inner surface 45 of the neck portion 13 d of the external container 13 .

この加圧製品４０においても、蓋体１５の天面１７ｃに筒状のホーンＨを当接させて振動エネルギーを付与させると、振動エネルギーは主として環状突起１３ｇ１、１３ｇ２を含む下側に伝わり、外側の環状突起１３ｇ１より外側への広がりは抑制され、首部１３ｄの内面４５より内側への拡がりも抑制される。そのため、効率的に溶着が行われ、溶着くずが外側や内側に広がることが抑制される。さらに２本の環状突起１３ｇ１、１３ｇ２の両方を蓋体１５に密に溶着することができ、長期にわたり内容物の漏れを抑制することができる。 In this pressurized product 40 as well, when the cylindrical horn H is brought into contact with the top surface 17c of the lid body 15 to impart vibrational energy, the vibrational energy is mainly transmitted to the lower side including the annular projections 13g1 and 13g2, and then to the outside. is suppressed from spreading outward from the annular projection 13g1, and spreading inward from the inner surface 45 of the neck portion 13d is also suppressed. Therefore, welding is performed efficiently, and welding debris is suppressed from spreading outward and inward. Furthermore, both of the two annular projections 13g1 and 13g2 can be tightly welded to the lid 15, and leakage of the contents can be suppressed for a long period of time.

図９に示す溶着方法では、図８Ａと同様に、外部容器１３のみで容器本体を構成しており、円筒状の下部を有するホーンＨを用いている。そして図６の溶着方法と同様に、蓋体１５のフランジ１５ｂの天面１７ｃの外周に、断面矩形状の外周切り欠き部１７ｄが形成されている。この方法では、ホーンＨは、外周切り欠き部１７ｄや蓋体１５より径が大きいものを採用することができる。そしてこの溶着方法においても、外部容器１３の環状突起１３ｇ１より外側には超音波エネルギーが伝わりにくい。そのため、外部容器１３と蓋体１５の間の溶着部で溶けた樹脂の外側および内側へのはみ出しが減り、固化した溶着くずによって邪魔されずに溶着することができる。また、外観もよくなる。 In the welding method shown in FIG. 9, similarly to FIG. 8A, the container main body is composed only of the outer container 13, and a horn H having a cylindrical lower portion is used. In the same manner as in the welding method of FIG. 6, an outer peripheral notch 17d having a rectangular cross section is formed on the outer periphery of the top surface 17c of the flange 15b of the lid 15. As shown in FIG. In this method, the horn H having a diameter larger than that of the outer peripheral notch portion 17d and the lid body 15 can be adopted. Also in this welding method, the ultrasonic energy is less likely to be transmitted to the outside of the annular projection 13g1 of the outer container 13. As shown in FIG. Therefore, the melted resin at the welded portion between the outer container 13 and the lid body 15 is less protruded to the outside and the inside, so that welding can be performed without being hindered by solidified welding debris. Also, the appearance is improved.

図１０に示す加圧容器の製造方法は、原液充填工程Ｓ１と、蓋体装着・収縮工程Ｓ２と、収縮外力解除工程Ｓ３と、加圧剤充填・蓋体溶着工程Ｓ４とからなる。収縮工程と収縮外力解除工程Ｓ３は省略してもよい。この製造方法では、始めに外部容器１３に内部容器１４を装着した容器本体１６を準備しておく。二重の容器本体１６は二重ブロー成形などによって製造することができる。そして原液充填工程Ｓ１のとき、内部容器１４の上部に原液Ｃを充填しない空所（ヘッドスペース）Ｈｓを残しておく。 The method for manufacturing a pressurized container shown in FIG. 10 includes a stock solution filling step S1, a lid attaching/shrinking step S2, a shrinkage external force releasing step S3, and a pressurizing agent filling/lid welding step S4. The contraction step and the contraction external force releasing step S3 may be omitted. In this manufacturing method, first, the container body 16 in which the inner container 14 is attached to the outer container 13 is prepared. The double container body 16 can be manufactured by double blow molding or the like. Then, in the concentrate filling step S1, a space (head space) Hs is left in the upper part of the inner container 14 where the concentrate C is not filled.

次の蓋体装着・収縮工程Ｓ２では、加圧剤収容室Ｓｐおよび原液収容室Ｓｃへのガスの出入りが可能な状態で蓋体１５を装着し（蓋体装着工程）、外部容器１３の胴部１３ｂを外周から押し込み（収縮工程）、ヘッドスペースＨｓ内の空気を排出する。なお、外部容器１３の収縮後に蓋体１５を装着してもよい。加圧剤収容室Ｓｐと外部とは図２Ａの横溝１４ｈと縦溝１４ｉによって外部と連通している。 In the next lid attachment/contraction step S2, the lid 15 is attached in a state in which gas can enter and exit the pressurizing agent storage chamber Sp and the concentrate storage chamber Sc (cover attachment step), and the outer container 13 is closed. The portion 13b is pushed in from the outer periphery (shrinkage step), and the air in the headspace Hs is discharged. Note that the lid 15 may be attached after the outer container 13 is shrunk. The pressurizing agent storage chamber Sp and the outside communicate with the outside through the horizontal groove 14h and the vertical groove 14i shown in FIG. 2A.

ついで収縮外力解除工程Ｓ３において、蓋体１５で内部容器１４を気密に封止しながら（溶着はまだ行わない）収縮外力を解除し、外部容器１３が弾力的に元の形状に復帰する力を利用して、加圧剤収容室Ｓｐに外部から空気を吸引する。あるいは空気を注入してもよい。それにより、内部容器１４と外部容器１３の隙間を拡げて加圧剤収容室Ｓｐを形成する。このような収縮工程と収縮外力解除工程Ｓ３は、加圧剤収容室Ｓｐの形状をできるだけ均等にするためである。すなわち、内部容器と外部容器を二重ブロー成形などによって製造したときは、内部容器と外部容器が密着しており、加圧剤Ｐを充填するときに加圧剤収容室Ｓｐが不均一に拡がりがちである。そのため、加圧剤Ｐを充填する前に、あらかじめ収縮工程と収縮外力解除工程Ｓ３を行って隙間を均等にするのが好ましい。別個に成形した内部容器１４を外部容器１３に挿入する製造法などでは、収縮工程と収縮外力解除工程Ｓ３を省略することができる。 Next, in the contraction external force releasing step S3, the contraction external force is released while the inner container 14 is airtightly sealed with the lid 15 (welding is not yet performed), and the external container 13 is elastically restored to its original shape. Air is sucked into the pressurizing agent storage chamber Sp from the outside. Alternatively, air may be injected. Thereby, the gap between the inner container 14 and the outer container 13 is widened to form the pressurizing agent storage chamber Sp. Such contraction step and contraction external force releasing step S3 are for making the shape of the pressurizing agent storage chamber Sp as uniform as possible. That is, when the inner container and the outer container are manufactured by double blow molding or the like, the inner container and the outer container are in close contact with each other, and when the pressurizing agent P is filled, the pressurizing agent storage chamber Sp expands unevenly. tend to Therefore, before filling the pressurizing agent P, it is preferable to perform the contraction step and the contraction external force releasing step S3 in advance to equalize the gap. In the manufacturing method of inserting the separately molded inner container 14 into the outer container 13, the contraction step and the contraction external force releasing step S3 can be omitted.

収縮外力解除工程Ｓ３についで加圧剤充填・蓋体溶着工程Ｓ４を行う。この工程では蓋体１５と外部容器１３の隙間を通して加圧剤収容室Ｓｐに加圧剤Ｐを充填し（アンダーカップ充填）、蓋体１５を外部容器１３と内部容器１４に溶着して密封する。このとき、たとえば図４の加圧剤充填装置３０などを採用することができ、図２Ａ、図６～図９の溶着方法を採用することができる。それにより溶着くずが外部に出にくく、蓋体１５と外部容器１３の密着性が高くなり、漏れが少なく、外観に優れた加圧製品を得ることができる。
なお、原液充填工程Ｓ１にて加温した原液を充填して内部容器を熱収縮させたり、原液充填工程Ｓ１の前に内部容器に熱風を吹き付けて熱収縮させてから原液を充填することもできる。これらの場合は収縮外力解除工程Ｓ３を省略することができる。 After the contraction external force releasing step S3, the pressurizing agent filling/lid body welding step S4 is performed. In this step, the pressurizing agent storage chamber Sp is filled with the pressurizing agent P through the gap between the lid member 15 and the outer container 13 (undercup filling), and the lid member 15 is welded to the outer container 13 and the inner container 14 for sealing. . At this time, for example, the pressurizing agent filling device 30 shown in FIG. 4 can be employed, and the welding method shown in FIGS. 2A and 6 to 9 can be employed. As a result, it is possible to obtain a pressurized product with less leaking and excellent appearance because welding dust is less likely to come out to the outside, the tightness between the lid 15 and the outer container 13 is increased, and leakage is reduced.
It is also possible to heat-shrink the inner container by filling the heated concentrate in the concentrate filling step S1, or to heat-shrink the inner container by blowing hot air to the inner container before the concentrate filling step S1 before filling the concentrate. . In these cases, the contraction external force releasing step S3 can be omitted.

以上、本発明の好ましい実施形態について説明したが、本発明はこれらの実施形態に限定されるものではなく、発明の範囲内で種々の変形を行うことができる。たとえば図１Ａなどの二重の容器本体１６では、蓋体１５は内部容器１４と外部容器１３の両方に溶着しているが、外部容器１３のみに固着し、内部容器１４とは単にＯリングなどで封止（シール）するだけでもよい。 Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made within the scope of the invention. For example, in a double container body 16 such as that shown in FIG. 1A, the lid 15 is welded to both the inner container 14 and the outer container 13, but is fixed only to the outer container 13, and the inner container 14 is simply an O-ring or the like. It is also possible to simply seal with .

また、前記実施形態では、外部容器１３や内部容器１４など、容器本体１６側に超音波溶着用の環状突起１３ｇ、１４ｇを設けているが、容器本体１６側の上端面を平坦とし、蓋体１５の下面に環状突起を設けてもよい。また、前記実施形態では、吐出部材１２の容器本体１６への装着をネジ締めによって行うようにしているが、スナップ嵌合など、他の取り付け・固定方法を採用することもできる。 In the above-described embodiment, the outer container 13, the inner container 14, and the like are provided with annular projections 13g and 14g for ultrasonic welding on the container body 16 side. An annular projection may be provided on the lower surface of 15 . Further, in the above-described embodiment, the discharge member 12 is attached to the container body 16 by screwing, but other attachment/fixing methods such as snap fitting may be employed.

図１０の製造法では、加圧剤収容室Ｓｐに加圧剤Ｐを充填した後、蓋体１５を容器本体１６に溶着しているが、外部容器１３の底部１３ａなどに加圧剤充填用バルブを設けているなどの場合は、先に蓋体１５を容器本体１６に溶着し、その後、加圧剤Ｐを充填することができる。その場合は、たとえば消費地に搬送した後、加圧剤Ｐを充填することができるので、搬送が容易になる。図２ＡではホーンＨの下部近辺の外径Ｄを外部容器１３の環状突起１３ｇと略同一としているが、図６の蓋体１５の外周切り欠き部１７ｄと同様の環状の切り欠き部をホーンＨに形成してもよい。さらにホーンＨと蓋体１５の両方に切り欠き部を形成してもよい。切り欠き部は断面矩形状のほか、テーパー状あるいは扇状であってもよい。 In the manufacturing method of FIG. 10, after the pressurizing agent storage chamber Sp is filled with the pressurizing agent P, the lid body 15 is welded to the container body 16. If a valve is provided, the lid 15 can be welded to the container body 16 first, and then the pressurizing agent P can be filled. In that case, for example, the pressurizing agent P can be filled after being transported to the place of consumption, thus facilitating transport. In FIG. 2A, the outer diameter D of the vicinity of the lower portion of the horn H is substantially the same as the annular projection 13g of the outer container 13. can be formed to Further, both the horn H and the lid body 15 may be formed with notches. The notch may have a rectangular cross section, a tapered shape, or a fan shape.

１０吐出装置
１１加圧容器
１１ａ加圧製品
１２吐出部材
Ｃ原液
Ｐ加圧剤
１３外部容器
１３ａ底部
１３ｂ胴部
１３ｃ肩部
１３ｄ首部
１３ｅ雄ねじ
１３ｆ首部の上端面
１３ｇ環状突起
１３ｈ傾斜部
１４内部容器
Ｓｃ原液収容室
Ｓｐ加圧剤収容室
１４ａ底部
１４ｂ胴部
１４ｃ肩部
１４ｄ首部
１４ｅ上端面
１４ｆフランジ
１４ｇ環状突起
１４ｈ横溝
１４ｉ縦溝
１５蓋体
１５ａ封止部
１５ａ１内筒部
１５ａ２バルブ収容部（嵌合筒部）
１５ｂフランジ
１５ｃ底部
１５ｄ被開封部
１５ｄ１受圧部
１５ｅ連続部
１５ｆ弱め線
１５ｇ補強部（補強リブ）
１６容器本体
１７平板部
１７ａ外筒部
１７ａ１外筒部の下面
１７ｂ平板部の下面
１７ｃ平板部の天面
Ｒ円環状の範囲
１７ｄ外周切り欠き部
１７ｄ１立ち壁
１８バルブホルダ
１８ａバルブ保持部
１８ｂラバー押さえ
２０キャップ（装着部）
２０ａ上底
２１バルブ
２２ステム
２３操作ボタン
２４ハウジング
２５バネ
２６ステムラバー
２７開封部
２７ａ（開封部の）底面
２７ｂ深穴
２７ｃ横孔
２８シール部材
Ｈホーン
Ｈ１ホーンの下面
３０加圧剤充填装置
３１ベース
３２昇降台
３３充填具
３５支柱
３６シール材
３７昇降装置
３８ホーンの下端近辺
Ｄホーンの下部近辺の外径
Ｈａ空所
Ｄ１空所の内径
３３ａ内周切り欠き部
Ｈｕホーンの上部
Ｈｍホーンの中部
Ｈｂホーンの下部
４０加圧製品
４１ディップチューブ
４２嵌合部
４２ａバルブ保持部
４３Ｏリング溝
４４Ｏリング
４５内面
１３ｇ１、１３ｇ２環状突起
４６空洞
Ｓ１原液充填工程
Ｓ２蓋体装着・収縮工程
Ｓ３収縮外力解除工程
Ｓ４加圧剤充填・蓋体溶着工程
Ｈｓヘッドスペース 10 Discharge device 11 Pressurized container 11a Pressurized product 12 Discharge member C Undiluted solution P Pressurizing agent 13 Outer container 13a Bottom 13b Body 13c Shoulder 13d Neck 13e Male thread 13f Neck upper end surface 13g Annular projection 13h Inclined portion 14 Internal container Sc Undiluted solution storage chamber Sp Pressurizing agent storage chamber 14a Bottom portion 14b Body portion 14c Shoulder portion 14d Neck portion 14e Upper end surface 14f Flange 14g Annular projection 14h Lateral groove 14i Vertical groove 15 Lid 15a Sealing portion 15a1 Inner cylindrical portion 15a2 Valve storage portion (fitting barrel)
15b flange 15c bottom 15d unsealable portion 15d1 pressure receiving portion 15e continuous portion 15f weakening line 15g reinforcing portion (reinforcing rib)
16 Container body 17 Flat plate portion 17a Outer cylinder portion 17a1 Lower surface 17b of outer cylinder Lower surface 17c of flat plate portion Top surface R of flat plate portion Annular range 17d Peripheral cutout portion 17d1 Standing wall 18 Valve holder 18a Valve holding portion 18b Rubber retainer 20 cap (attachment part)
20a Upper base 21 Valve 22 Stem 23 Operation button 24 Housing 25 Spring 26 Stem rubber 27 Unsealing part 27a (Unsealing part) bottom surface 27b Deep hole 27c Lateral hole 28 Seal member H Horn H1 Lower surface of horn 30 Pressurizing agent filling device 31 Base 32 Elevating platform 33 Filling tool 35 Post 36 Sealing material 37 Elevating device 38 Near lower end of horn D Outside diameter near lower part of horn Ha Space D1 Inside diameter of space
33a Inner circumference notch Hu Upper part of horn Hm Middle part of horn Hb Lower part of horn 40 Pressurization product 41 Dip tube 42 Fitting part 42a Valve holding part 43 O-ring groove 44 O-ring 45 Inner surfaces 13g1, 13g2 Annular protrusion 46 Cavity S1 Undiluted solution filling step S2 Lid attaching/shrinking step S3 Shrinkage external force releasing step S4 Pressurizing agent filling/lid welding step Hs Head space

Claims

A method of welding a lid body for sealing an opening to the upper end of the neck of a container body having a cylindrical neck, comprising:
preparing a container body and a lid provided with an annular protrusion for ultrasonic welding at a position slightly inside the outer peripheral edge of at least one of the corresponding portions of the upper end surface of the neck and the lid,
Place a lid on the top surface of the neck,
A horn for ultrasonic welding with a flat bottom is brought into contact with a range including a portion corresponding to the annular projection and an inner side thereof , except for the outer side of the portion corresponding to the annular projection on the top surface of the lid. and ultrasonically weld,
Welding method of lid body.

2. The lid welding method according to claim 1, wherein a portion of the top surface of the lid that corresponds to the annular projection is notched outside.

3. The lid welding method according to claim 1, wherein the lower surface of the horn is provided with a space inside the inner surface of the neck portion of the container body.

A method of welding a lid body for sealing an opening to the upper end of the neck of a container body having a cylindrical neck, comprising:
preparing a container body having an annular projection for ultrasonic welding at a position slightly inside the outer peripheral edge of at least one of the corresponding portions of the upper end surface of the neck and the lid, and a lid;
The container body comprises an outer container having a cylindrical neck, and an inner container accommodated inside the outer container and having a neck fitted with the neck of the outer container,
The inner container has a flange on the upper end of the neck portion that protrudes upward from the upper end surface of the outer container and is engaged with the upper end surface of the neck portion of the outer container,
The lid has a portion that abuts on the upper ends of the necks of the outer container and the inner container,
Place the lid on the upper end of the neck of the outer container and the inner container,
A horn for ultrasonic welding is brought into contact with the top surface of the lid body except for the outer side of the portion corresponding to the annular projection ,
The top openings of the outer container and the inner container are sealed by ultrasonically welding the lid to the upper ends of the necks of the outer container and the inner container, respectively .
Welding method of lid body.

5. The lid welding method according to claim 4, wherein the lower surface of the horn is provided with a space inside the inner surface of the neck portion of the inner container.

The lid body has an outer cylindrical portion fitted to the outer periphery of the flange of the inner container, an inner cylindrical portion inserted into the neck portion of the inner container, and a flat plate portion contacting the upper surface of the flange of the inner container,
5. The lid welding method according to claim 4, wherein the lower end of the outer cylindrical portion contacts the upper end surface of the neck portion of the outer container.

A method for producing a pressurized product comprising a container body, a lid closing the container body, and a pressurizing agent filled in the container body,
Sealing the container body with the lid by the welding method according to any one of claims 1 to 6,
Before or after welding the lid body, filling the container body with a content containing a pressurizing agent;
A method of manufacturing a pressurized product.