JPH0710131A - Heater - Google Patents
HeaterInfo
- Publication number
- JPH0710131A JPH0710131A JP5172343A JP17234393A JPH0710131A JP H0710131 A JPH0710131 A JP H0710131A JP 5172343 A JP5172343 A JP 5172343A JP 17234393 A JP17234393 A JP 17234393A JP H0710131 A JPH0710131 A JP H0710131A
- Authority
- JP
- Japan
- Prior art keywords
- resin layer
- hot air
- container
- heating box
- blowing hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/103—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined direct heating both surfaces to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
- B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
- B29C66/43122—Closing the top of gable top containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72327—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
- B29C66/72328—Paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
- B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
- B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
- B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
- B29C66/72324—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of inorganic materials not provided for in B29C66/72321 - B29C66/72322
- B29C66/72325—Ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7162—Boxes, cartons, cases
- B29L2031/7166—Cartons of the fruit juice or milk type, i.e. containers of polygonal cross sections formed by folding blanks into a tubular body with end-closing or contents-supporting elements, e.g. gable type containers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Composite Materials (AREA)
- Closing Of Containers (AREA)
- Package Closures (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は紙製容器を構成する表面
の樹脂層に熱風を衝当させて該樹脂層を溶かす加熱装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for melting a resin layer on the surface of a paper container by hitting it with hot air.
【０００２】[0002]
【従来の技術】紙製容器を構成する紙片の表面には樹脂
層が形成され、例えば、紙製容器の上部の開口部から被
充填物を充填した後この開口部を密閉する際、開口部の
内側全周のシール代に熱風を衝当させてシール代の樹脂
層を溶かし、シール代を合わせ、挟圧して接合する作業
がなされる。このような紙製容器を構成する紙片は、例
えば、紙材（坪量３２０ｇ／ｍ2 ）と、容器の外側に臨
む紙材の表面に形成された外側熱可塑性樹脂層（ＰＥ２
０μ）と、容器の内側に臨む紙材の表面に形成された内
側第１熱可塑性樹脂層（ＰＥ２５μ）と、この内側第１
熱可塑性樹脂層の内側に形成されたガスバリアー層と、
ガスバリアー層の内側に形成された内側第２熱可塑性樹
脂層（ＰＥＴ１２μ）と、この内側第２熱可塑性樹脂層
の内側に形成された内側第３熱可塑性樹脂層（ＰＥ６０
μ）とで構成されている。前記ガスバリアー層は、被充
填物が空気中の酸素や光等の影響を受けないようにする
ためのもので、ガスバリアー層としてアルミ箔（７μ）
が用いられているものが多い。2. Description of the Related Art A resin layer is formed on the surface of a piece of paper that constitutes a paper container. For example, when filling an object to be filled through the opening at the top of the paper container and then sealing the opening, the opening Hot air is struck against the sealing margin around the inner circumference to melt the resin layer for the sealing margin, the sealing margin is matched, and the work is performed by pinching and joining. The paper piece constituting such a paper container is, for example, a paper material (basis weight: 320 g / m 2 ) and an outer thermoplastic resin layer (PE2) formed on the surface of the paper material facing the outside of the container.
0 μ), the inner first thermoplastic resin layer (PE 25 μ) formed on the surface of the paper material facing the inside of the container, and the inner first
A gas barrier layer formed inside the thermoplastic resin layer,
An inner second thermoplastic resin layer (PET 12μ) formed inside the gas barrier layer, and an inner third thermoplastic resin layer (PE60) formed inside the inner second thermoplastic resin layer.
μ) and. The gas barrier layer is for preventing the filling object from being affected by oxygen and light in the air. As the gas barrier layer, aluminum foil (7μ) is used.
Are often used.
【０００３】一方、近年、環境問題等の観点からリサイ
クル可能な容器が要求されている。このような環境問題
等の観点からすると、ガスバリアー層としてアルミ箔を
用いた従来の容器では焼却ごみとなり、リサイクル不能
な容器となってしまう。On the other hand, in recent years, recyclable containers have been required from the viewpoint of environmental problems and the like. From the viewpoint of such environmental problems, the conventional container using the aluminum foil as the gas barrier layer becomes incinerated waste and becomes a non-recyclable container.
【０００４】[0004]
【発明が解決しようとする課題】そこで、リサイクル可
能な容器とするためには、アルミ箔以外のものをガスバ
リアー層として用いなければならない。この場合、アル
ミ箔以外のものでガスバリアー層に用いられる物質とし
ては、例えば、酸化ケイ素や酸化マグネシウム等の蒸着
フィルムが考えられるが、これら酸化ケイ素や酸化マグ
ネシウム等の蒸着フィルムは熱伝導性が低い。すなわ
ち、アルミ箔をガスバリアー層として用いた従来の容器
では、アルミ箔が熱伝導性に優れるため、シール代に熱
風を衝当させた際、このアルミ箔の熱伝導性により熱が
分散され、シール代の樹脂層がほぼ均等に溶かされ、シ
ール代を確実に接合することができた。Therefore, in order to make a recyclable container, something other than aluminum foil must be used as the gas barrier layer. In this case, as the substance other than the aluminum foil and used for the gas barrier layer, for example, a vapor deposition film of silicon oxide, magnesium oxide, or the like can be considered. However, the vapor deposition film of silicon oxide, magnesium oxide, or the like has a thermal conductivity. Low. That is, in a conventional container using an aluminum foil as a gas barrier layer, the aluminum foil has excellent thermal conductivity, so when hot air is struck against the seal, heat is dispersed by the thermal conductivity of the aluminum foil, The resin layer for the seal allowance was melted almost uniformly, and the seal allowance could be reliably joined.
【０００５】しかしながら、酸化ケイ素や酸化マグネシ
ウム等の蒸着フィルムのように熱伝導性が低い物質をガ
スバリアー層として用いた場合、紙片の熱伝導性が低下
し、熱風をシール代に衝当させた場合、図８に示すよう
に、熱風吹き出し用孔７１から吹き出される熱風の衝当
箇所のみが加熱され、紙材７２の内側の樹脂層７３全体
に熱が分散されず、熱風の衝当箇所に発泡７５が生じた
り、発泡が更に進んでピンホール７７を生じる等の不具
合が考えられ、シール代を確実に接合することができな
くなる。本発明は前記事情に鑑み案出されたものであっ
て、本発明の目的は、ガスバリアー層として熱伝導率の
低い物質を用いた場合であっても、発泡やピンホール等
を生じることなく熱風により樹脂層を均等に溶かすこと
ができる加熱装置を提供することにある。However, when a substance having a low thermal conductivity such as a vapor-deposited film of silicon oxide or magnesium oxide is used as the gas barrier layer, the thermal conductivity of the paper piece is lowered and hot air is struck against the sealing margin. In this case, as shown in FIG. 8, only the hot-air blow-off holes 71 blow the hot-air blow-off points, and the heat is not dispersed throughout the resin layer 73 inside the paper material 72. It is considered that there is a problem such as foaming 75 at the end or pinholes 77 due to further expansion of the foaming, so that the seal margin cannot be reliably joined. The present invention has been devised in view of the above circumstances, and an object of the present invention is to prevent foaming, pinholes, etc. even when a substance having a low thermal conductivity is used as a gas barrier layer. An object of the present invention is to provide a heating device capable of uniformly melting a resin layer with hot air.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
本発明は、紙材と、この紙材の表面に形成された樹脂層
とからなる紙製容器の部分に熱風を衝当させ、該部分の
樹脂層を溶かす加熱装置であって、前記樹脂層を溶かす
箇所に臨ませて配置され、内部に熱風が供給される加熱
ボックスと、前記樹脂層を溶かす箇所に臨む前記加熱ボ
ックス部分に多数貫設された熱風吹き出し用孔とを備
え、前記熱風吹き出し用孔の前記樹脂層に臨む開口部分
は、前記樹脂層から離れた熱風吹き出し用孔の部分より
も大きな径で形成されていることを特徴とする。In order to achieve the above object, the present invention provides a paper container comprising a paper material and a resin layer formed on the surface of the paper material with hot air blown against the portion of the paper container, A heating device for melting a portion of the resin layer, the heating box being arranged so as to face the portion where the resin layer is melted, to which hot air is supplied, and the heating box portion which faces the portion where the resin layer is melted are provided in large numbers. A hot air blowing hole penetratingly provided, the opening portion of the hot air blowing hole facing the resin layer is formed to have a larger diameter than a portion of the hot air blowing hole separated from the resin layer. Characterize.
【０００７】また、本発明は、前記熱風吹き出し用孔が
前記樹脂層に臨む開口部分には、前記樹脂層に近付くに
つれて熱風吹き出し用孔の径が大きくなるテーパ面が形
成されていることを特徴とする。Further, according to the present invention, a tapered surface is formed at an opening portion of the hot air blowing hole facing the resin layer, the diameter of the hot air blowing hole increasing as the hot air blowing hole approaches the resin layer. And
【０００８】[0008]
【作用】加熱ボックスの内部に送給された熱風は、熱風
吹き出し用孔から拡散されつつ樹脂層に衝当され、樹脂
層が均等に溶かされる。The hot air sent to the inside of the heating box collides with the resin layer while being diffused from the hot air blowing holes, and the resin layer is uniformly melted.
【０００９】[0009]
【実施例】以下、本発明の実施例について添付図面に従
って説明する。尚、実施例では、平面視矩形状で上部が
開放された紙製容器に被充填物を充填した後、左右面の
半部を内側に折り畳み、前後面を内側に倒してゲーベル
型に密閉する場合について説明する。図１は本発明に係
る加熱装置の正面図を示す。加熱装置１は、容器３の搬
送路の上方のフレーム５を介して配設され、加熱装置１
は内部に熱風が供給される加熱ボックス７や、この加熱
ボックス７を上下動させるエアーシリンダ９等を備え
る。前記フレーム５はアーム１１及びロッド１３を介し
て基台（不図示）側で支持され、前記エアーシリンダ９
がこのフレーム５上に立設され、また、フレーム５には
ブラケット１５を介して筒体１７が垂設され、この筒体
１７には、熱風供給源からの熱風が送給される。前記エ
アーシリンダ９のピストンロッドの伸縮作動により、該
ピストンロッドに連結された二本のガイドロッド１９が
上下動し、各ガイドロッド１９は、フレーム５に取着さ
れた軸受２１を挿通し、下部がフレーム５の下方に延在
している。前記ガイドロッド１９の下端には、前記筒体
１７の外側に配設された外筒２３の上端が取着され、前
記加熱ボックス７はこの外筒２３の下端に取着されてい
る。従って、加熱ボックス７の内部には、筒体１７から
の熱風が外筒２３を介して供給され、また、加熱ボック
ス７は、エアーシリンダ９の伸縮作動により上下動し、
図１中２５は温度センサを示す。Embodiments of the present invention will be described below with reference to the accompanying drawings. In the embodiment, after filling a paper container having a rectangular shape in plan view with an open upper part, the left and right side halves are folded inward, and the front and rear sides are inwardly closed to form a Gobel type seal. The case will be described. FIG. 1 shows a front view of a heating device according to the present invention. The heating device 1 is arranged via the frame 5 above the conveyance path of the container 3, and
Is provided with a heating box 7 into which hot air is supplied, an air cylinder 9 for moving the heating box 7 up and down, and the like. The frame 5 is supported on the side of a base (not shown) via an arm 11 and a rod 13, and the air cylinder 9
Is erected on the frame 5, and a cylindrical body 17 is hung vertically on the frame 5 via a bracket 15, and hot air from a hot air supply source is fed to the cylindrical body 17. By the expansion and contraction operation of the piston rod of the air cylinder 9, the two guide rods 19 connected to the piston rod move up and down, and each guide rod 19 is inserted through the bearing 21 attached to the frame 5, Extend below the frame 5. The upper end of an outer cylinder 23 arranged outside the cylindrical body 17 is attached to the lower end of the guide rod 19, and the heating box 7 is attached to the lower end of the outer cylinder 23. Therefore, hot air from the cylindrical body 17 is supplied to the inside of the heating box 7 via the outer cylinder 23, and the heating box 7 moves up and down by the expansion and contraction operation of the air cylinder 9,
Reference numeral 25 in FIG. 1 denotes a temperature sensor.
【００１０】図２は加熱ボックスの断面底面図を示す。
ゲーベル型に密閉する場合には、紙製容器３の上部開口
部３０１の内側全周のシール代の樹脂層と左右面の外側
のシール代の樹脂層を溶かす関係上、加熱ボックス７
は、内側全周のシール代の樹脂層を溶かす第１加熱ボッ
クス３１と、左右面の外側のシール代の樹脂層を溶かす
一対の第２加熱ボックス３２とで構成され、この実施例
では、同時に二つの紙製容器３のシール代を溶かせるよ
うに加熱ボックス７は二組設けられている。前記第１加
熱ボックス３１の側面のうちは、容器３の前後面３０３
に対応する部分は平坦な面３１０１で形成され、また、
容器３の左右面３０５に対応する面は、折りぐせが付け
られた容器３の上部開口部３０１に対応させて内側に窪
む屈曲面３１０３で形成されている。また、各第２加熱
ボックス３２が容器３の左右面３０５の外側のシール代
に臨む面は、折りぐせが付けられた容器３の上部開口部
３０１に対応させて前記第１ボックス側に突出する屈曲
面３２０１で形成されている。FIG. 2 shows a cross-sectional bottom view of the heating box.
In the case of sealing in a Goebel type, the heating box 7 is used because the resin layer for sealing around the inner circumference of the upper opening 301 of the paper container 3 and the resin layer for sealing on the outer right and left sides are melted.
Is composed of a first heating box 31 that melts the resin layer for the seal margin on the entire inner circumference and a pair of second heating boxes 32 that melts the resin layer for the seal margin on the left and right surfaces. In this embodiment, Two sets of heating boxes 7 are provided so as to melt the sealing margins of the two paper containers 3. Among the side surfaces of the first heating box 31, the front and rear surfaces 303 of the container 3
Is formed by a flat surface 3101, and
The surface corresponding to the left and right surfaces 305 of the container 3 is formed by a bent surface 3103 which is recessed inward so as to correspond to the upper opening portion 301 of the container 3 which is folded. Further, the surface of each of the second heating boxes 32, which faces the outer seal margin of the left and right surfaces 305 of the container 3, projects toward the first box side corresponding to the upper opening portion 301 of the container 3 with the folds. It is formed of a curved surface 3201.
【００１１】前記第１加熱ボックス３１の面３１０１，
３１０３及び第２加熱ボックス３２の面３２０１には、
図３に示すように、多数の熱風吹き出し用孔３５が貫設
されている。前記熱風吹き出し用孔３５は、図４に示す
ように、加熱ボックス７の内部に位置する部分３５０１
が均一な径（１ｍｍ）により所定の長さ形成され、ま
た、容器３側に臨む部分には、座ぐりにより容器３に近
付くにつれてその内径が次第に大きくなるテーパ面３５
０３が形成され、従って、容器３側に臨む熱風吹き出し
用孔３５の開口３５０５（直径が２ｍｍ）は、内部に位
置する孔部分３５０１よりも大きな径で形成されてい
る。The surface 3101 of the first heating box 31
3103 and the surface 3201 of the second heating box 32,
As shown in FIG. 3, a large number of hot air blowing holes 35 are provided through. As shown in FIG. 4, the hot air blowing hole 35 has a portion 3501 located inside the heating box 7.
Has a uniform diameter (1 mm) and has a predetermined length, and the portion facing the container 3 side has a tapered surface 35 whose inner diameter gradually increases as it approaches the container 3 due to the spot facing.
03 is formed, and thus the opening 3505 (diameter 2 mm) of the hot air blowing hole 35 facing the container 3 side is formed with a diameter larger than that of the hole portion 3501 located inside.
【００１２】尚、紙製容器３は、紙材（坪量３２０ｇ／
ｍ2 ）と、紙材の表面に形成された外側熱可塑性樹脂層
（ＰＥ２０μ）と、容器３の内側に臨む紙材の表面に形
成された内側第１熱可塑性樹脂層（ＰＥ２５μ）と、こ
の内側第１熱可塑性樹脂層の内側に形成されたガスバリ
アー層（酸化ケイ素を０．１〜０．１５μの厚さに蒸着
したＰＥＴフィルム）と、ガスバリアー層の内側に形成
された内側第２熱可塑性樹脂層（ＰＥＴ１２μ）と、こ
の内側第２熱可塑性樹脂層の内側に形成された内側第３
熱可塑性樹脂層（ＰＥ６０μ）とで構成されている。The paper container 3 is made of paper material (basis weight: 320 g /
m 2 ), an outer thermoplastic resin layer (PE20μ) formed on the surface of the paper material, and an inner first thermoplastic resin layer (PE25μ) formed on the surface of the paper material facing the inside of the container 3, Gas barrier layer (PET film in which silicon oxide is vapor-deposited to a thickness of 0.1 to 0.15 μ) formed inside the first thermoplastic resin layer, and second inside barrier film formed inside the gas barrier layer A thermoplastic resin layer (PET 12μ) and an inner third layer formed inside the inner second thermoplastic resin layer.
It is composed of a thermoplastic resin layer (PE60μ).
【００１３】次に、作用について説明する。加熱ボック
ス７は、図１に実線で示すように、容器３の搬送路上に
位置しており、容器３が搬送され加熱ボックス７下方の
所定の位置に位置決めされると、エアーシリンダ９が縮
小作動して加熱ボックス７が下降し、各第１加熱ボック
ス３１及び第２加熱ボックス３２の面３１０１，３１０
３，３２０１が容器３の上部開口部３０１の所定の箇所
に臨む。そして、加熱ボックス７の各面３１０１，３１
０３，３２０１の熱風吹き出し用孔３５から容器３のシ
ール代に向けて熱風が吹き出される。Next, the operation will be described. As shown by the solid line in FIG. 1, the heating box 7 is located on the transport path of the container 3, and when the container 3 is transported and positioned at a predetermined position below the heating box 7, the air cylinder 9 is reduced. Then, the heating box 7 descends, and the surfaces 3101 and 310 of the first heating box 31 and the second heating box 32, respectively.
3,3201 faces a predetermined portion of the upper opening portion 301 of the container 3. Then, the surfaces 3101 and 31 of the heating box 7
Hot air is blown toward the seal margin of the container 3 from the hot air blowing holes 35 of 03, 3201.
【００１４】この熱風の吹き出し時、熱風吹き出し用孔
３５が容器３側に臨む部分には、容器３に近付くにつれ
て径が大きくなるテーパ面３５０３が形成されているの
で、加熱ボックス７の内部に送給された熱風は、図５に
示すように、このテーパ面３５０３により拡散されつつ
容器３のシール代に衝当され、シール代が均等に加熱さ
れ、樹脂層が均等に溶かされる。尚、図５において３７
は紙材、３９は紙材３７の表面に形成された外側熱可塑
性樹脂層、４１はこの外側熱可塑性樹脂層３９の表面に
印字されたインク、４３は紙材３７の内側に形成されガ
スバリアー層を含んだ内側第１乃至第３熱可塑性樹脂層
を示す。従って、酸化ケイ素や酸化マグネシウム等のよ
うに熱伝導性が低い物質をガスバリアー層として用いた
場合であっても、熱風の衝当箇所のみが加熱されて熱風
の衝当箇所に発泡が生じたり、発泡が更に進んでピンホ
ールを生じる等の不具合が解消され、樹脂層が均等に溶
かされ、シール代を確実に接合してゲーベル型に折り畳
むことが可能となる。At the time of blowing out the hot air, a tapered surface 3503 having a diameter that increases as it approaches the container 3 is formed at the portion where the hot air blowing hole 35 faces the container 3 side. As shown in FIG. 5, the supplied hot air is diffused by the tapered surface 3503 and collides with the sealing margin of the container 3, the sealing margin is heated uniformly, and the resin layer is melted uniformly. Incidentally, in FIG.
Is a paper material, 39 is an outer thermoplastic resin layer formed on the surface of the paper material 37, 41 is ink printed on the surface of the outer thermoplastic resin layer 39, and 43 is a gas barrier formed inside the paper material 37. 3 illustrates inner first to third thermoplastic resin layers including layers. Therefore, even when a substance having low thermal conductivity such as silicon oxide or magnesium oxide is used as the gas barrier layer, only the hot air hit portion is heated and foaming occurs at the hot air hit portion. As a result, it is possible to solve the problem that the foaming further progresses to generate a pinhole, the resin layer is evenly melted, and the seal allowance is surely joined to fold it into a Goebel shape.
【００１５】図６は、本実施例に係る加熱装置１よりシ
ール代を溶かしてゲーベル型に折り畳んだ容器の実験結
果を示し、図７は、均等径（１ｍｍ）の熱風吹き出し用
孔を備えた従来の加熱装置によりシール代を溶かしてゲ
ーベル型に折り畳んだ容器３の実験結果を示す。実験で
は、熱風の温度を２６０℃、２９０℃、３２０℃とし、
風圧を４０mmAq，６０mmAqとした場合について、洩れの
検査と、シール代の表面形状の検査と、浸透液検査につ
いて行なった。洩れの検査は、容器を逆さにし、該容器
の内部にテレピン油を入れて行ない、浸透液検査では、
色の付いた液体を付着して行なった。FIG. 6 shows an experimental result of a container obtained by melting the seal allowance and folding it into a Gobel type by the heating device 1 according to the present embodiment, and FIG. 7 is provided with a hot air blowing hole having a uniform diameter (1 mm). The experimental result of the container 3 in which the seal margin is melted by the conventional heating device and folded into a Goebel shape is shown. In the experiment, the temperature of the hot air was set to 260 ° C, 290 ° C, 320 ° C,
When the air pressure was 40 mmAq and 60 mmAq, the inspection of leakage, the inspection of the surface shape of the seal margin, and the permeation liquid inspection were performed. To check for leaks, turn the container upside down and put turpentine oil inside the container.
This was done by depositing a colored liquid.
【００１６】本実施例に係る加熱装置１では、図６に示
すように、洩れの検査及び浸透液検査において洩れがな
かった。しかしながら、熱風の温度を２９０℃とし風圧
を６０mmAqとしてから、クレータの兆候が表われ、熱風
の温度を３２０℃としてからクレータが発生した。In the heating device 1 according to this embodiment, as shown in FIG. 6, there was no leakage in the leakage inspection and the penetrant inspection. However, after the hot air temperature was 290 ° C. and the air pressure was 60 mmAq, signs of craters appeared, and after the hot air temperature was 320 ° C., craters were generated.
【００１７】これに対して、従来の加熱装置では、図７
に示すように、熱風の温度を２６０℃とし風圧を４０mm
Aqとした場合、樹脂層が溶かされていない抜け部が多
く、試験を行なえなかった。また、熱風の温度を２６０
℃とし風圧を６０mmAqとした場合と、熱風の温度を２９
０℃とし風圧を４０mmAqとした場合に、洩れが生じた。
また、熱風の温度を２６０℃とし風圧を６０mmAqとした
場合にクレータの兆候が表われ、熱風の温度を２９０℃
としてからクレータが発生した。また、浸透液検査で
は、熱風の温度を２６０℃とし風圧を６０mmAqとした場
合と、熱風の温度を２９０℃とし風圧を４０mmAqとした
場合に、のり代の部分に洩れが生じた。On the other hand, in the conventional heating device, as shown in FIG.
As shown in, the temperature of hot air is 260 ℃ and the air pressure is 40mm.
In the case of Aq, the test could not be conducted because there were many voids where the resin layer was not melted. In addition, the temperature of the hot air is set to 260
℃ and the air pressure is 60mmAq, and the temperature of hot air is 29
When the temperature was 0 ° C and the air pressure was 40 mmAq, leakage occurred.
Also, when the hot air temperature is 260 ° C and the air pressure is 60 mmAq, crater signs appear, and the hot air temperature is 290 ° C.
And then a crater occurred. Further, in the permeate inspection, leakage occurred in the paste margin part when the temperature of the hot air was 260 ° C. and the air pressure was 60 mmAq, and when the temperature of the hot air was 290 ° C. and the air pressure was 40 mmAq.
【００１８】尚、実施例では、テーパ面３５０３を用い
て容器３側に臨む熱風吹き出し用孔３５の開口３５０５
を、内部に位置する孔部分３５０１よりも大きな径で形
成した場合について説明したが、容器３側に臨む熱風吹
き出し用孔３５の開口３５０５を、内部に位置する孔部
分３５０１よりも大きな径で形成する構造はテーパ面３
５０３を用いなくともよく、任意である。また、実施例
では、容器の上部開口部のシール代を加熱する場合につ
いて説明したが、本発明が適用される箇所は、このよう
なシール代に限らず、樹脂層を溶かす必要がある箇所、
全てに適用可能である。また、本発明はガスバリアー性
を要求される容器に限定されず、全ての容器に適用可能
である。In the embodiment, the opening 3505 of the hot air blowing hole 35 facing the container 3 side is formed by using the tapered surface 3503.
Was described as having a larger diameter than the hole portion 3501 located inside. However, the opening 3505 of the hot air blowing hole 35 facing the container 3 side is formed with a diameter larger than the hole portion 3501 located inside. Tapered surface 3
503 may not be used and is optional. In addition, in the embodiment, the case where the sealing margin of the upper opening of the container is heated has been described, but the location to which the present invention is applied is not limited to such sealing margin, and the location where the resin layer must be melted
It is applicable to all. Further, the present invention is not limited to the container required to have the gas barrier property, and can be applied to all containers.
【００１９】[0019]
【発明の効果】以上の説明で明らかなように本発明は、
紙材と、この紙材の表面に形成された樹脂層とからなる
紙製容器の部分に熱風を衝当させ、該部分の樹脂層を溶
かす加熱装置であって、前記樹脂層を溶かす箇所に臨ま
せて配置され、内部に熱風が供給される加熱ボックス
と、前記樹脂層を溶かす箇所に臨む前記加熱ボックス部
分に多数貫設された熱風吹き出し用孔とを備え、前記熱
風吹き出し用孔の前記樹脂層に臨む開口部分は、前記樹
脂層から離れた熱風吹き出し用孔の部分よりも大きな径
で形成されているので、容器の素材のガスバリアー層と
してアルミ箔以外の熱伝導率の低い物質を用いた場合で
あっても、熱風により発泡やピンホール等を生じること
なく樹脂層を均等に溶かすことができ、紙製容器のシー
ルを確実に行なうことが可能となり、リサイクル可能な
容器を得る上で有利となる。As is apparent from the above description, the present invention is
A heating device that causes hot air to impinge on a portion of a paper container composed of a paper material and a resin layer formed on the surface of the paper material to melt the resin layer in the portion, and to a location where the resin layer is melted. A heating box arranged facing each other and having hot air supplied therein, and a plurality of hot air blowing holes penetrating the heating box portion facing the portion where the resin layer is melted are provided, and the hot air blowing hole is Since the opening facing the resin layer is formed with a larger diameter than the portion of the hot air blowing hole separated from the resin layer, a material with low thermal conductivity other than aluminum foil is used as the gas barrier layer of the container material. Even when used, the resin layer can be evenly melted by hot air without causing foaming, pinholes, etc., and it is possible to reliably seal the paper container and to obtain a recyclable container. Is advantageous It made.
【図１】本発明に係る加熱装置の正面図を示す。FIG. 1 shows a front view of a heating device according to the present invention.
【図２】加熱ボックスの断面底面図を示す。FIG. 2 shows a cross-sectional bottom view of the heating box.
【図３】熱風吹き出し用孔が形成された加熱ボックスの
面の正面図である。FIG. 3 is a front view of a surface of a heating box in which hot air blowing holes are formed.
【図４】熱風吹き出し用孔の断面図である。FIG. 4 is a cross-sectional view of hot air blowing holes.
【図５】熱風吹き出し用孔から熱風が吹き出される説明
図である。FIG. 5 is an explanatory diagram in which hot air is blown out from a hot air blowing hole.
【図６】本実施例に係る加熱装置の実験結果の説明図で
ある。FIG. 6 is an explanatory diagram of an experimental result of the heating device according to the present embodiment.
【図７】従来の加熱装置の実験結果の説明図である。FIG. 7 is an explanatory diagram of experimental results of a conventional heating device.
【図８】従来の熱風吹き出し用孔から熱風が吹き出され
る説明図である。FIG. 8 is an explanatory diagram in which hot air is blown out from a conventional hot air blowing hole.
１ 加熱装置 ３ 容器 ７ 加熱ボックス ３１ 第１加熱ボックス ３２ 第２加熱ボックス ３５ 熱風吹き出し用孔 ３１０１，３１０３，３２０１ 加熱ボックスの面 ３５０３ テーパ面 DESCRIPTION OF SYMBOLS 1 Heating device 3 Container 7 Heating box 31 1st heating box 32 2nd heating box 35 Hot air blowing holes 3101 3103 3201 Surface of heating box 3503 Tapered surface
Claims (2)
脂層とからなる紙製容器の部分に熱風を衝当させ、該部
分の樹脂層を溶かす加熱装置であって、 前記樹脂層を溶かす箇所に臨ませて配置され、内部に熱
風が供給される加熱ボックスと、 前記樹脂層を溶かす箇所に臨む前記加熱ボックス部分に
多数貫設された熱風吹き出し用孔とを備え、 前記熱風吹き出し用孔の前記樹脂層に臨む開口部分は、
前記樹脂層から離れた熱風吹き出し用孔の部分よりも大
きな径で形成されている、 ことを特徴とする加熱装置。1. A heating device for causing hot air to impinge on a portion of a paper container composed of a paper material and a resin layer formed on the surface of the paper material to melt the resin layer in the portion, A heating box that is arranged so as to face the layer melting point and is supplied with hot air inside, and a plurality of hot air blowing holes that are provided through the heating box portion that faces the resin layer melting point are provided. The opening portion of the blowing hole facing the resin layer is
A heating device having a larger diameter than a portion of a hot air blowing hole separated from the resin layer.
む開口部分には、前記樹脂層に近付くにつれて熱風吹き
出し用孔の径が大きくなるテーパ面が形成されている請
求項１記載の加熱装置。2. The heating device according to claim 1, wherein a taper surface is formed at an opening portion of the hot air blowing hole facing the resin layer, the diameter of the hot air blowing hole increasing as the hot air blowing hole approaches the resin layer. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172343A JP3039592B2 (en) | 1993-06-18 | 1993-06-18 | Heating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5172343A JP3039592B2 (en) | 1993-06-18 | 1993-06-18 | Heating equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0710131A true JPH0710131A (en) | 1995-01-13 |
| JP3039592B2 JP3039592B2 (en) | 2000-05-08 |
Family
ID=15940154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5172343A Expired - Lifetime JP3039592B2 (en) | 1993-06-18 | 1993-06-18 | Heating equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3039592B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0832732A3 (en) * | 1996-09-27 | 2000-03-01 | Shikoku Kakoki Co., Ltd. | Heating device for heat-sealing top portions of containers |
| US7531281B2 (en) | 2002-06-28 | 2009-05-12 | Ricoh Company, Ltd. | Toner for developing latent electrostatic image, container having the same, developer using the same, process for developing using the same, image-forming process using the same, image-forming apparatus using the same, and image-forming process cartridge using the same |
| KR102220038B1 (en) * | 2020-07-16 | 2021-02-24 | 조명섭 | Keypad structure for woodwind tones |
-
1993
- 1993-06-18 JP JP5172343A patent/JP3039592B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0832732A3 (en) * | 1996-09-27 | 2000-03-01 | Shikoku Kakoki Co., Ltd. | Heating device for heat-sealing top portions of containers |
| US7531281B2 (en) | 2002-06-28 | 2009-05-12 | Ricoh Company, Ltd. | Toner for developing latent electrostatic image, container having the same, developer using the same, process for developing using the same, image-forming process using the same, image-forming apparatus using the same, and image-forming process cartridge using the same |
| KR102220038B1 (en) * | 2020-07-16 | 2021-02-24 | 조명섭 | Keypad structure for woodwind tones |
| CN113314086A (en) * | 2020-07-16 | 2021-08-27 | 赵明燮 | Keyboard structure for woodwind instrument sound hole |
| WO2022014970A1 (en) * | 2020-07-16 | 2022-01-20 | 조명섭 | Keypad structure for woodwind instrument tone hole |
| CN113314086B (en) * | 2020-07-16 | 2024-02-09 | 赵明燮 | Keyboard structure for sound hole of woodwind instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3039592B2 (en) | 2000-05-08 |
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