JP2005082161A - Weathering prevention for top face of glass bottle mouth - Google Patents
Weathering prevention for top face of glass bottle mouth Download PDFInfo
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Abstract
Description
本発明は、広口ガラスびんの口部天面の風化防止方法に関する。 The present invention relates to a method for preventing weathering of the top of a mouth of a wide-mouth glass bottle.
食品用の広口ガラスびんは、インスタントコーヒーやクリームパウダーを内容物として充填されることが多いため、びん口部天面（口部の端面をいう）に紙やアルミ箔等のシール材を貼り付けることによってびんの口部を密封することが広く行われている。 Wide-mouth glass bottles for food are often filled with instant coffee or cream powder as the contents, so a sealing material such as paper or aluminum foil is applied to the top of the bottle mouth (referred to as the end face of the mouth). It is widely practiced to seal the mouth of the bottle.
また、ガラスびんは、輸送やハンドリングに際して擦り傷が発生するのを防止するため、胴部や底部に表面コーティング剤を塗布することも同様に一般的に行われている。しかし、食品用の広口ガラスびんの場合、充填される食品の安全性という観点から、その口部にはコーティング剤を塗布しないか、又は塗布するとしても、内容物に影響を及ぼす懸念がまったく無いよう、コーティング量がごく微量に止められている。このため、シール材の貼り付け前の口部は、ガラス地肌のままか又は地肌に近い状態にあり、ガラス表面が直接空気に触れて、ガラス素材において一般に知られている表面の風化現象が発生しやすい。 In addition, in order to prevent the glass bottle from being scratched during transportation and handling, a surface coating agent is generally applied to the body and the bottom as well. However, in the case of wide-mouth glass bottles for food, from the viewpoint of the safety of the food to be filled, no coating agent is applied to the mouth, or there is no concern that the contents will be affected even if it is applied. Thus, the coating amount is stopped to a very small amount. For this reason, the mouth part before sticking the sealing material is in a state of glass surface or close to the surface, and the glass surface directly touches the air, and a generally known surface weathering phenomenon occurs in the glass material. It's easy to do.
ガラス表面が風化を起こすと、風化作用としてよく知られているように、ガラス表面は親水性が失われて疎水性となると共に、それに起因して空気中の有機物等の疎水性物質がこれに付着する。このため、広口ガラスびんの口部天面に風化が起こると、シール材の貼り付けのために口部天面に接着剤を塗布しようとするとき、濡れ性が低下した口部天面によって接着剤がはじかれ、均一に塗るのが困難になるという不都合が生じていた。 When the glass surface is weathered, the glass surface loses its hydrophilicity and becomes hydrophobic, as is well known as weathering action, and hydrophobic substances such as organic substances in the air are caused by this. Adhere to. For this reason, when weathering occurs on the top of the wide-mouth glass bottle, when the adhesive is applied to the top of the mouth for attaching a sealing material, it adheres to the top of the mouth with reduced wettability. The agent was repelled and it was difficult to apply uniformly.
口部天面への濡れ性を、ガラスびん製造時の状態に戻してシールの確実な貼り付けを保証するため、ガラス素地への酸化炎処理や、有機溶剤による洗浄、並びに紫外線やオゾンによる乾式洗浄をすることが知られている。これらの処理は、親水性の回復に極めて有効ではあるが、清浄化された表面が直接空気に曝されることとなり、直ちに風化が再開することとなる。従って、処理後すぐにシール材の貼付を行わない限り、口部天面は、再度風化した状態となって、処理の意義は失われる。しかしながら、ガラスびんを製造後直ちに又はこれらの処理後直ちに食品工場のラインで使用することや、風化をさせない環境中に保管しておくことは、実際上は無理なため、ある期間保管後の風化したガラスびんが使用されるのが通常であり、シール材の貼り付けに際して上述の問題が古くから未解決であった。従って、ガラスびん口部天面の風化を効果的に防止する方法があれば、非常に有益である。 In order to return the wettability to the top of the mouth to the same state as when the glass bottle was manufactured, to ensure the sticking of the seal, the glass substrate was treated with an oxidative flame, washed with an organic solvent, and dried with UV or ozone. It is known to wash. These treatments are extremely effective in restoring hydrophilicity, but the cleaned surface will be directly exposed to air and weathering will resume immediately. Therefore, unless the sealing material is applied immediately after the treatment, the top of the mouth is weathered again, and the significance of the treatment is lost. However, it is practically impossible to use glass bottles immediately after production or after these treatments in a food factory line, or to store in a non-weathering environment. Glass bottles are usually used, and the above-mentioned problems have not been solved for a long time when a sealing material is applied. Therefore, if there is a method for effectively preventing weathering of the top of the glass bottle mouth, it is very beneficial.
ガラスびんの口部天面へのシール材の接着力を向上させると共に、ガラスの風化による接着力の低下を抑制する方法として、ガラスびんの口部天面に糖類及び／又はその誘導体を含むコーティング液によるコーティングをすることが知られている（特許文献１参照）。しかしながら、この方法では、風化を多少抑制できるものの、効果は不十分である。 As a method for improving the adhesive strength of the sealing material to the top surface of the mouth of the glass bottle and suppressing the decrease in the adhesive strength due to weathering of the glass, a coating containing a saccharide and / or a derivative thereof on the top surface of the mouth of the glass bottle It is known to perform coating with a liquid (see Patent Document 1). However, although this method can suppress weathering to some extent, the effect is insufficient.
一方、印刷に適した表面の提供を目的として、ガラスその他の固体表面を酸化炎処理し次いでケイ酸化炎処理することにより変性させる方法が知られているが（特許文献２参照）、ガラスの風化の防止に関しては教示するところがない。
本発明は、広口ガラスびん等のガラスびんの口部天面の風化防止方法を提供することを目的とする。 An object of this invention is to provide the weathering prevention method of the opening | mouth top surface of glass bottles, such as a wide-mouth glass bottle.
本発明者は、未風化の又は清浄化したガラスびんの口部天面をケイ酸化炎処理することにより、風化を大幅に遅らせることができることを見出し、更に検討の結果本発明を完成させた。 The inventor has found that weathering can be greatly delayed by treating the top surface of the mouth of an unweathered or cleaned glass bottle with silicic acid flame, and as a result of further studies, the present invention has been completed.
すなわち、本発明は、以下を提供する。
（１）未風化の又は清浄化したガラスびんの口部天面をケイ酸化炎に接触させて処理することを特徴とする、ガラスびん口部天面の風化防止方法、
（２）清浄化が、酸化炎処理、有機溶剤による洗浄、紫外線照射による清浄化及びオゾンによる清浄化よりなる群より選ばれる方法で行われるものである、上記（１）に規定の風化防止方法、
（３）ガラスびん口部天面を酸化炎に接触させて清浄化処理し、次いでケイ酸化炎に接触させてケイ酸化処理することを特徴とする、ガラスびん口部天面の風化防止方法、
（４）上記（１）ないし（３）の何れかに規定の方法で口部天面を風化防止処理してなるガラスびん、
（５）上記（４）に規定のガラスびんの口部天面に接着性材料を介在させてシール材を接着することによりシールすることを特徴とする、ガラスびん口部のシール方法、
（６）該接着性材料が、合成糊、天然系糊又は熱融着樹脂である、上記（５）に規定のシール方法、及び
（７）上記（５）又は（６）に規定のシール方法によって口部がシールされてなるガラスびん。
That is, the present invention provides the following.
(1) A method for preventing weathering of the top of a glass bottle, characterized in that the top of the mouth of an unweathered or cleaned glass bottle is contacted with a silicic acid flame.
(2) The weathering prevention method defined in (1) above, wherein the cleaning is performed by a method selected from the group consisting of oxidation flame treatment, cleaning with an organic solvent, cleaning with ultraviolet irradiation, and cleaning with ozone. ,
(3) A method for preventing weathering of the top surface of the glass bottle mouth, wherein the top surface of the glass bottle mouth is brought into contact with an oxidation flame to be cleaned, and then the top surface of the glass bottle mouth is brought into contact with a silicidation flame to carry out a silicidation treatment.
(4) A glass bottle obtained by subjecting the top of the mouth to weathering prevention by the method defined in any of (1) to (3) above,
(5) A method for sealing a glass bottle mouth, characterized by sealing by adhering a sealing material with an adhesive material interposed between the top of the mouth of the glass bottle specified in (4) above,
(6) The sealing method defined in (5) above, and (7) the sealing method defined in (5) or (6) above, wherein the adhesive material is synthetic glue, natural glue or heat-sealing resin. Glass bottle with mouth sealed by
ガラスの風化は、ガラス組成のうちＮａ+やＣａ++が、大気に由来するＨ+で置換されることによって、ガラスの表面層からＮａ+やＣａ++が失われるという反応に起因するものであるが、本発明によれば、口部天面に酸化ケイ素がコーティングされ、これがガラス表面層のＮａ+やＣａ++に対して保護コートの機能を果たすことによって、それらの損耗を大幅に遅らせ、風化を防止するため、口部天面の親水性が長期間維持される。このため、この部位への接着剤塗布がムラなく行え、シール材の貼り付けを容易且つ確実に行うことができる。また製造直後の清浄な（風化前の）びんの口部天面が有する高い親水性・シール性に本発明が影響を及ぼすこともない。 Glass weathering is caused by a reaction that Na + or Ca ++ is lost from the surface layer of glass by replacing Na + or Ca ++ in the glass composition with H + derived from the atmosphere. However, according to the present invention, the top surface of the mouth is coated with silicon oxide, which acts as a protective coat against Na + and Ca ++ on the glass surface layer, thereby greatly reducing their wear. In order to delay and prevent weathering, the hydrophilicity of the top of the mouth is maintained for a long time. For this reason, it is possible to uniformly apply the adhesive to this portion, and it is possible to easily and reliably apply the sealing material. In addition, the present invention does not affect the high hydrophilicity / sealability of the top of the mouth of a clean bottle (before weathering) immediately after manufacture.
本発明においては、処理すべきガラスの口部天面が、例えば製造直後あるいは清浄化処理直後などで清浄な面である場合には、ケイ酸化炎処理のみによって、目的とする風化防止された表面を生じさせることができる。 In the present invention, when the top surface of the mouth of the glass to be treated is a clean surface, for example, immediately after production or immediately after the cleaning treatment, the target weathered surface is prevented only by the silicic acid flame treatment. Can be generated.
また酸化炎による処理は、処理すべきガラス口部天面が既に風化している場合、これに付着している有機物、塵埃等を除去して清浄なガラス表面を生じさせる。 Further, when the glass mouth top surface to be treated has already been weathered, the treatment with the oxidation flame removes organic matter, dust, and the like adhering to the glass mouth top surface, thereby producing a clean glass surface.
清浄なガラス表面を得るには、有機溶剤による洗浄、紫外線照射又はオゾン洗浄による有機物分解によってもよく、これらの方法は当業者に周知である。 A clean glass surface may be obtained by organic solvent cleaning, ultraviolet irradiation or ozone decomposition, and these methods are well known to those skilled in the art.
本発明は、ガラスびん口部天面にホットエンドコーティングが施されている場合にも適用することができる。「ホットエンドコーティング」とは、ガラスの強度を増す目的で、ガラス容器の成形後徐冷前に三塩化ブチル錫等の気体に接触させることによって行う、酸化錫等によるガラスの表面処理であり、当業者に周知の繁用技術である。 The present invention can also be applied when a hot end coating is applied to the top of the glass bottle mouth. “Hot-end coating” is a surface treatment of glass with tin oxide or the like, which is performed by bringing the glass container into contact with a gas such as butyltin trichloride and the like before annealing, for the purpose of increasing the strength of the glass container. This is a common technique well known to those skilled in the art.
本発明において、「酸化炎」とは、燃焼に必要な量を超える過剰量の酸素を含んだ炎をいい、メタンガス、プロパンガス、ブタンガス、天然ガスその他各種の引火性ガスと空気との適宜の混合により得られるものであってよい。引火性ガスと空気との混合割合は、引火性ガスの成分に応じて、体積比で例えば１：３〜１：８０とすればよい。 In the present invention, “oxidation flame” refers to a flame containing an excessive amount of oxygen exceeding the amount necessary for combustion. Appropriate methane gas, propane gas, butane gas, natural gas and other various flammable gases and air are used. It may be obtained by mixing. The mixing ratio of the flammable gas and air may be set to, for example, 1: 3 to 1:80 by volume ratio according to the components of the flammable gas.
本発明において、「ケイ酸化炎」とは、燃焼により生じた酸化ケイ素を含んだ炎をいい、上記のような各種の引火性ガスの何れかと、ケイ素源となる有機ケイ素化合物、好ましくは常温で気体状ないし気化し易い化合物、例えばテトラメトキシシランその他のアルコキシシランとを混合したガスを、これらの成分が完全燃焼して酸化ケイ素を生じるに十分な量の空気と混合して燃焼させることにより得られる。 In the present invention, “silicic acid flame” refers to a flame containing silicon oxide generated by combustion, and is one of the above various flammable gases and an organosilicon compound serving as a silicon source, preferably at room temperature. Obtained by burning a gas mixed with a gaseous or easily vaporizable compound such as tetramethoxysilane or other alkoxysilane with a sufficient amount of air to completely burn these components to form silicon oxide. It is done.
本発明において、ガラスびん口部天面を酸化炎に接触させて清浄化処理し、次いでケイ酸化炎に接触させてケイ酸化処理する場合、これらの火炎処理相互の時間的な間隔は適宜にとってよい。従って、例えば１ロットのガラスびんにつき酸化炎処理を済ませ、次いで、それらのガラスびんをケイ酸化炎処理に付してもよく、また、例えばこれらの火炎処理用のバーナーを一体化させる等により、酸化炎とケイ酸化炎とを空間的に近接して発生させておき、処理すべきガラスびん口部天面を先ず酸化炎に接触させ、次いで直ちにケイ酸化炎に接触させるようにしてもよい。後者の処理形態をとれば、優れた作業効率で処理を完了させることができる。 In the present invention, when the top surface of the glass bottle is brought into contact with an oxidation flame for cleaning treatment, and then brought into contact with the silicic acid flame for silicidation treatment, the time interval between these flame treatments is appropriate as appropriate. . Thus, for example, a lot of glass bottles may be subjected to an oxidative flame treatment and then the glass bottles may be subjected to a silicic acid flame treatment, or by integrating these flame treatment burners, etc. Oxidation flame and silicic acid flame may be generated in spatial proximity so that the top of the glass bottle opening to be treated is first brought into contact with the oxidation flame and then immediately brought into contact with the silicic acid flame. If the latter processing mode is adopted, the processing can be completed with excellent work efficiency.
なお、ガラスびん口部をシールで密封する際に用いる接着性材料は、この用途に通常使用されているものであればよく、例えば、ポリビニルアルコール、酢酸ビニル等のような合成糊、澱粉糊等のような天然系糊、エチレン酢酸ビニル共重合体等のような熱融着樹脂が挙げられる。 The adhesive material used for sealing the glass bottle mouth with a seal may be any material that is usually used for this purpose, such as synthetic glue such as polyvinyl alcohol and vinyl acetate, starch glue, etc. And a heat-sealing resin such as an ethylene vinyl acetate copolymer.
以下、実施例により本発明を更に詳細に説明するが、本発明がこれらの実施例に限定されることは意図しない。以下の実施例は、代表的実施例であり、他の多種類のガラスびんでも殆ど同様の結果が得られている。 EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, it is not intending that this invention is limited to these Examples. The following examples are representative examples, and almost the same results are obtained with other types of glass bottles.
ソーダ石灰ガラス（Ｎａ2Ｏ＋ＣａＯ＋ＳｉＯ2）よりなるガラスびん（口部外径５０ｍｍ、高さ１９０ｍｍ、天面の幅２ｍｍ）を常法により製造した。びんを２つの群に大別し、一方の群（処理群）のびんの口部天面には酸化炎処理及びケイ酸化炎処理を行い、他方の群（対照群）のびんは無処置とした。
酸化炎処理及びケイ酸化炎処理には、有限会社イシマット・ジャパンの処理装置を用いた。この装置は、処理対象物を搬送しつつ、酸化炎又はケイ酸化炎に処理対象物を接触させるように構成されている。
装置での処理条件は、以下のとおりである。なお「イトロ」（登録商標）液は、有限会社イシマット・ジャパンの販売になる処理液であり、テトラメトキシランを１０-2〜１０-6のモル分率で引火性ガスと空気の混合気体に添加して燃焼ガスとするための、テトラメトキシラン含有液である。
酸化炎： 燃焼ガスとして天然ガス１３Ａを、過剰量の酸素（空気）の存在下に燃焼させた。
ケイ酸化炎： イトロ液を０．２ｐｐｍ／分の速度で気化させた後、上記燃焼ガスと混合し、十分量の酸素（空気）の存在化に燃焼させた。
処理操作： 装置に処理群のガラスびんをセットし、バーナーの火口から５０〜１００ｍｍの炎が吹き出るようにガス圧と噴射量を設定した。先ず酸化炎を発生させて、炎のおよそ先端部が処理群のガラスびんの口部天面を掃くように操作し、次いで、それらのガラスびんを再度装置にセットし、炎をケイ酸化炎に切り替えた上で、口部天面を同様に火炎処理した。
ガラスびんの送り速度： 約３０ｃｍ／秒
ガラスびん口部天面の処理時間（酸化炎、ケイ酸化炎とも）： 約０．２秒
A glass bottle made of soda-lime glass (Na 2 O + CaO + SiO 2 ) (mouth outer diameter 50 mm, height 190 mm, top surface width 2 mm) was produced by a conventional method. The bottles are roughly divided into two groups. The top of the mouth of one group (treated group) is treated with oxidative flame and silicic acid flame, while the other group (control group) is untreated. did.
For the oxidation flame treatment and the silicic acid flame treatment, a treatment apparatus of Ishimat Japan Ltd. was used. This apparatus is configured to bring the processing object into contact with the oxidation flame or the silicic acid flame while conveying the processing object.
The processing conditions in the apparatus are as follows. The “ITRO” (registered trademark) solution is a treatment solution sold by Ishimat Japan Ltd., and tetramethoxylane is converted to a flammable gas and air mixture at a molar fraction of 10 −2 to 10 −6. A tetramethoxylane-containing liquid to be added to form a combustion gas.
Oxidation flame: Natural gas 13A was burned in the presence of an excess amount of oxygen (air) as a combustion gas.
Silicic acid flame: The itro solution was vaporized at a rate of 0.2 ppm / min, mixed with the combustion gas, and burned in the presence of a sufficient amount of oxygen (air).
Processing operation: The glass bottle of the processing group was set in the apparatus, and the gas pressure and the injection amount were set so that a flame of 50 to 100 mm was blown out from the crater of the burner. First, an oxidation flame is generated, and the tip of the flame is operated so that the top surface of the glass bottle mouth of the treatment group is swept. Then, the glass bottles are set in the apparatus again, and the flame is converted into a silicic acid flame. After switching, the top of the mouth was flame treated in the same manner.
Glass bottle feed rate: Approx. 30 cm / sec Processing time on top of glass bottle mouth (both oxidation and silicic acid flames): Approx. 0.2 seconds
このようにして処理したガラスびん口部天面の濡れ性及びシール性、並びにそれらのその後の経時的変化について、次の試験を行った。 The following test was conducted on the wettability and sealability of the top surface of the glass bottle mouth treated in this way, and their subsequent changes over time.
＜試験１＞
上記処理群の処理直後のガラスびんと、対照群のガラスびんそれぞれ２０本づつにつき、びん口部天面の撥水性を試験した。
（試験方法）
視認を容易にするため少量の食用色素を含有した蒸留水をペン液とした水性フェルトペンで、びんの口部天面をなぞって塗布し、天面の撥水の状態を観察し、次の基準に従って、撥水性の大きさを評価して撥水をグレード分けした。撥水のグレード１〜３を試験適合とした。この範囲であれば実際の製品としての接着性がほぼ保たれることが、予め確認されている。
グレード１： 天面の全面がペン液で濡れる。
グレード２： 天面のほぼ全面がペン液で濡れる。
グレード３： 天面の７０％以上がペン液で濡れる。
グレード４： 天面の４０％以上がペン液で濡れ且つほぼ全面に亘って均等に塗れる。
グレード５： 塗れる部分が局部的であり全面の殆どが濡れない。
（結果）
結果を次の表に示す。処理群のびん口部天面の処理直後の濡れ性は、対照群のそれと比較して同等であり、何れも濡れ性は良好であった。このことは、びん口部天面に施した酸化炎処理及びケイ酸化炎処理は、製造直後の清浄な（風化の無い）びんの口部天面の優れた濡れ性に影響を与えないことを示している。
<Test 1>
The water repellency of the top of the bottle mouth was tested for 20 glass bottles immediately after the treatment in the treatment group and 20 glass bottles in the control group.
(Test method)
For ease of visual recognition, apply a trace of the top of the bottle's mouth with an aqueous felt pen with distilled water containing a small amount of food coloring as a pen solution. According to the standards, the water repellency was graded by evaluating the size of the water repellency. Water repellent grades 1 to 3 were set as test conformity. In this range, it has been confirmed in advance that the adhesion as an actual product is almost maintained.
Grade 1: The entire top surface gets wet with pen solution.
Grade 2: Nearly the entire top surface gets wet with the pen solution.
Grade 3: 70% or more of the top surface gets wet with pen solution.
Grade 4: 40% or more of the top surface gets wet with the pen solution and can be applied evenly over the entire surface.
Grade 5: The part that can be painted is local, and most of the entire surface does not get wet.
(result)
The results are shown in the following table. The wettability immediately after the treatment of the top surface of the treatment group was equal to that of the control group, and the wettability was good in all cases. This means that the oxidation flame treatment and silicic acid flame treatment applied to the top of the bottle mouth do not affect the excellent wettability of the top of the mouth of a clean (non-weathered) bottle immediately after manufacture. Show.
＜試験２＞
上記処理群の処理直後のガラスびんと、対照群のガラスびんそれぞれ２０本づつにつき、びん口部天面のシール性を試験した。シール性試験は、一般に食品メーカー等においてインスタントコーヒー等内容物の充填後に行われる試験と同じものである。すなわち、合成糊、澱粉糊などを用いてガラスびん口部天面にいわゆるインナーシールを接着しておき、そのシール部を帯状に切断しながら上方に一定速度で引張り上げる引張り強度試験と、同様にシールを接着しておき、シールを貫通させた注射針を通して中に気体を注入して（接着部分の剥離により）パンクするときの圧力を調べるパンク圧試験とが最も一般に行われているので、この２通りの試験を行った。シールの貼り付けは、合成糊、澱粉糊及びヒートシール方式で行い、処理群の処理直後のガラスびん及び対照群のガラスびんを、それぞれの貼り付け方法につき、各１０本ずつ用いて試験を行った。
（結果）
合成糊についての結果を表２に示す。澱粉糊で接着したシール及びヒートシール方式のシールも、同等の結果であった。このことは、びん口部天面に施した酸化炎処理及びケイ酸化炎処理は、製造直後の清浄な（風化の無い）びんの口部天面のシール性に影響を与えないことを示している。
<Test 2>
The sealability of the top surface of the bottle mouth was tested for 20 glass bottles immediately after the treatment of the treatment group and 20 glass bottles of the control group. The sealability test is generally the same as a test performed after filling a content such as instant coffee in a food manufacturer or the like. In other words, a so-called inner seal is bonded to the top of the glass bottle mouth using synthetic glue, starch paste, etc., and the tensile strength test is pulled up at a constant speed while cutting the seal part into a strip shape. A puncture pressure test is most commonly performed, in which a seal is bonded and gas is injected through a syringe needle penetrating the seal to check the pressure when puncturing is performed (by peeling of the bonded portion). Two tests were conducted. The seal is affixed by synthetic glue, starch glue and heat seal method, and the glass bottles immediately after the treatment group and the control group glass bottles are tested using 10 each for each affixing method. It was.
(result)
The results for the synthetic glue are shown in Table 2. Seals glued with starch glue and heat-sealed seals gave similar results. This indicates that the oxidation flame treatment and silicic acid flame treatment applied to the top of the bottle mouth do not affect the sealing performance of the mouth top of a clean (non-weathered) bottle immediately after manufacture. Yes.
実施例１と同様にして製造し２つの群に大別して準備した処理群及び対照群のびんを、共に通常の事務室に保管して経時変化させ、２週間後及び４週間後の濡れ性を、試験１と同様の方法で評価した。試験に用いたびん数は、それぞれの保管期間につき、各群２０本とした。
結果を表３及び４に示す。４週間までの保管では、処理群、対照群ともに、適合性評価に合格したが、対照群ではこの間明らかなグレードの上昇が認められ、濡れ性の低下傾向が大きいのに対し、処理群では、殆ど低下しないことが判明した。
The bottles of the treatment group and the control group, which were prepared in the same manner as in Example 1 and roughly divided into two groups, were both stored in a normal office and changed over time, and the wettability after 2 weeks and 4 weeks was measured. The evaluation was performed in the same manner as in Test 1. The number of bottles used in the test was 20 in each group for each storage period.
The results are shown in Tables 3 and 4. In storage for up to 4 weeks, both the treatment group and the control group passed the suitability evaluation, but in the control group, an obvious increase in grade was observed during this period, while the tendency to decrease wettability was large, whereas in the treatment group, It was found that there was almost no decrease.
実施例１と同様のガラスびんであって成形後徐冷前に常法によりホットエンドコーティング（ＳｎＯ2）を施したものと施さなかったものとを準備し、夫々を実施例１と同様に、処理群及び対照群に分け、処理群のガラスびんの口部天面を酸化炎及びケイ酸化炎で処理した。処理群及び対照群のびんにつき、試験２と同様にして引張り強度及びパンク圧強度を測定することによりシール性を評価した。
結果を表５に示す。口部天面にホットエンドコーティングを施したびんの方がこれを施さなかったびんに比して、全般的に高いシール性を示したが、ホットエンドコーティングを施したびんの間では、口部天面への酸化炎処理及びケイ酸化炎処理の有無は、シール性に影響を与えなかった。ホットエンドコーティングを施さなかったびんの熱融着シールでは、酸化炎処理及びケイ酸化炎処理を施した群の方が高いシール性を示した。
A glass bottle similar to that in Example 1 was prepared with and without hot end coating (SnO 2 ) by a conventional method before molding and before slow cooling. Divided into a treatment group and a control group, the top of the mouth of the glass bottle of the treatment group was treated with an oxidation flame and a silicic acid flame. The sealability was evaluated by measuring the tensile strength and puncture pressure strength of the bottles of the treatment group and the control group in the same manner as in Test 2.
The results are shown in Table 5. The bottle with the hot end coating on the top of the mouth showed higher overall sealing performance than the bottle without the hot end coating, but between the bottles with the hot end coating, The presence or absence of an oxidation flame treatment and a silicic acid flame treatment on the top surface did not affect the sealing performance. In the heat-sealed seals of the bottles not subjected to hot end coating, the group subjected to the oxidation flame treatment and the silicidation flame treatment showed higher sealing performance.
本発明は、ガラスびんの口部天面の表面特性を、製造直後の清浄な、風化していない表面特性のまま長期間維持することを可能にするため、ガラスびん製造後、使用まで良好な状態で従来より長期間保管することが可能となり、ガラスびんの製造及び保管の工程全体の管理の柔軟性と効率を高めることができる。 The present invention makes it possible to maintain the surface characteristics of the top surface of the mouth of the glass bottle for a long period of time while maintaining the clean, unweathered surface characteristics immediately after manufacture. In this state, it is possible to store for a longer period of time than before, and the flexibility and efficiency of management of the entire manufacturing and storage process of the glass bottle can be increased.
Claims (7)
A glass bottle whose mouth is sealed by the sealing method according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003313312A JP2005082161A (en) | 2003-09-04 | 2003-09-04 | Weathering prevention for top face of glass bottle mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003313312A JP2005082161A (en) | 2003-09-04 | 2003-09-04 | Weathering prevention for top face of glass bottle mouth |
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| Publication Number | Publication Date |
|---|---|
| JP2005082161A true JP2005082161A (en) | 2005-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2003313312A Pending JP2005082161A (en) | 2003-09-04 | 2003-09-04 | Weathering prevention for top face of glass bottle mouth |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230116920A1 (en) * | 2017-03-17 | 2023-04-20 | Anheuser-Busch Inbev S.A. | Glass Container Having an Inkjet Printed Image and a Method for the Manufacturing Thereof |
-
2003
- 2003-09-04 JP JP2003313312A patent/JP2005082161A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230116920A1 (en) * | 2017-03-17 | 2023-04-20 | Anheuser-Busch Inbev S.A. | Glass Container Having an Inkjet Printed Image and a Method for the Manufacturing Thereof |
| US11660898B2 (en) * | 2017-03-17 | 2023-05-30 | Anheuser-Busch Inbev S.A. | Glass container having an inkjet printed image and a method for the manufacturing thereof |
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