JP2501159B2 - Heat seal roll - Google Patents

Heat seal roll

Info

Publication number
JP2501159B2
JP2501159B2 JP4039453A JP3945392A JP2501159B2 JP 2501159 B2 JP2501159 B2 JP 2501159B2 JP 4039453 A JP4039453 A JP 4039453A JP 3945392 A JP3945392 A JP 3945392A JP 2501159 B2 JP2501159 B2 JP 2501159B2
Authority
JP
Japan
Prior art keywords
heat
roll
blade
seal
sealing
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.)
Expired - Lifetime
Application number
JP4039453A
Other languages
Japanese (ja)
Other versions
JPH05237939A (en
Inventor
克規 二瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAISEI RAMICK KK
Original Assignee
TAISEI RAMICK KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TAISEI RAMICK KK filed Critical TAISEI RAMICK KK
Priority to JP4039453A priority Critical patent/JP2501159B2/en
Publication of JPH05237939A publication Critical patent/JPH05237939A/en
Application granted granted Critical
Publication of JP2501159B2 publication Critical patent/JP2501159B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • 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
    • 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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8183—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal conducting constructional aspects
    • B29C66/81831—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal conducting constructional aspects of the welding jaws
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • 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
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/939—Measuring or controlling the joining process by measuring or controlling the speed characterised by specific speed values or ranges

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、ヒートシールロー
ル、なかでも、自動充填製袋機の横シールロールとして
用いて好適なヒートシールロールに関し、包装資料とし
てのフィルムの走行速度を12m/min もしくはそれ以上と
した場合においても、常に適正なヒートシールを実現す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-sealing roll, and more particularly to a heat-sealing roll suitable for use as a horizontal sealing roll of an automatic filling bag-making machine. The traveling speed of a film as a packaging material is 12 m / min or Even if the number is more than that, proper heat sealing is always realized.

【０００２】[0002]

【従来の技術】従来の、この種の横シールロールとして
は、出願人が先に特開昭61−25825 号として提案したも
のがあり、この横シールロールは、ヒートシール刃が、
ロールの回転方向の後方側に薄肉部分を有することを特
徴とするものである。2. Description of the Related Art As a conventional horizontal seal roll of this type, there has been previously proposed by the applicant as JP-A-61-25825.
It is characterized by having a thin portion on the rear side in the rotation direction of the roll.

【０００３】このような横シールロールは、自動充填製
袋機を、包装用積層フィルムの走行速度が約４〜12m/mi
n の範囲内のラインスピードで運転する場合には、ヒー
トシール刃の薄肉部分の弾性変形および放熱作用に基づ
き、溶融樹脂層の高い接合強度をもたらすとともに、溶
融樹脂の被包装物への混入を効果的に防止することがで
きる。Such a horizontal seal roll is manufactured by using an automatic filling bag-making machine and a traveling speed of the laminated film for packaging of about 4 to 12 m / mi.
When operating at a line speed within the range of n, the elastic bonding of the thin portion of the heat-sealing blade and the heat dissipation effect provide a high bonding strength of the molten resin layer and prevent the molten resin from mixing into the packaged object. It can be effectively prevented.

【０００４】[0004]

【発明が解決しようとする課題】ところで、かかる横シ
ールロールによって、包装用積層フィルムに、その長さ
方向に所定の間隔をおいたヒートシールを施すに当り、
フィルムを12m/min 以上の速度で走行させた場合には、
ヒートシール刃の、とくには、回転方向前方側端部分お
よび後方側端部分のそれぞれの部分の熱量不足に起因し
て、それらの各部分と接触するフィルム部分にヒートシ
ール不良が発生するという不都合があった。By the way, when such a horizontal seal roll is used to heat seal the laminated film for packaging at a predetermined interval in the lengthwise direction,
When the film is run at a speed of 12 m / min or more,
The heat seal blade, in particular, due to the lack of heat amount of each of the front end portion and the rear end portion in the rotation direction, there is a disadvantage that a heat seal defect occurs in the film portion in contact with each of those portions. there were.

【０００５】このことを図３に平面図で例示するところ
に基づいて具体的に説明すると、幅方向のほぼ中央部分
から二つ折りにされて、遊端部分に予め縦シールｖが施
された包装用フィルムｆの長さ方向に所定の間隔をおい
て横シールｌを施す場合に、好適には横シール部ｌは、
その全長にわたってヒートシール刃の幅と対応する均一
幅、図では仮想線で挟まれる均一幅を有することになる
ところ、実際には、ヒートシール刃の回転方向前方側端
部分および後方側端部分の熱量不足に起因して、横シー
ル部ｌは、図に斜線を施して示すように、長さ方向の中
央部分が括れた形状をなし、シール強度の不足したヒー
トシール部となる。This will be described in detail with reference to the plan view shown in FIG. 3. A package in which the free end portion is preliminarily provided with a vertical seal v is folded in half from the substantially central portion in the width direction. When the lateral seal 1 is provided at a predetermined interval in the length direction of the film f, the lateral seal part 1 is preferably
A uniform width corresponding to the width of the heat seal blade over its entire length, a uniform width sandwiched by imaginary lines in the figure, is actually formed. Due to insufficient heat quantity, the lateral seal portion 1 has a shape in which the central portion in the lengthwise direction is constricted as shown by hatching in the figure, and becomes a heat seal portion having insufficient seal strength.

【０００６】この発明は、従来技術の有するこのような
問題点を解決することを課題として検討した結果なされ
たものであり、とくに12m/min 以上の速いラインスピー
ドでのヒートシールに際し、包装用フィルムを、ヒート
シール刃の全幅にわたって常に適正に加熱して、全長に
わたって均一な幅を有するヒートシール部を形成するこ
とができるヒートシールロールを提供する。The present invention has been made as a result of investigations aimed at solving such problems of the prior art, and in particular, when heat sealing at a fast line speed of 12 m / min or more, a packaging film is used. There is provided a heat-sealing roll capable of forming a heat-sealing portion having a uniform width over the entire length by always properly heating the entire width of the heat-sealing blade.

【０００７】[0007]

【課題を解決するための手段】この発明のヒートシール
ロールは、相互に近接させて配置されて、互いに逆方向
に回転駆動される二本一対のロールのそれぞれにヒータ
を内蔵させるとともに、各ロールに、その半径方向外方
へ突出してロールの軸線方向へ延在し、表面が周方向に
弧状をなすヒートシール刃を設けたところにおいて、ヒ
ートシール刃の回転方向前方側部分を薄肉部分とし、そ
の薄肉部分とロールとの間に、ヒートシール刃それ自
身、いいかえればその本体部分より熱伝導率の高い異種
材料を嵌め込んで固着したものである。A heat-sealing roll of the present invention has heaters built into each of a pair of rolls which are arranged close to each other and are driven to rotate in opposite directions. In, where it extends in the axial direction of the roll projecting outward in the radial direction, where the surface is provided with a heat-sealing blade having an arc shape in the circumferential direction, the front side portion in the rotational direction of the heat-sealing blade is a thin portion, The heat-sealing blade itself, in other words, a different material having a higher thermal conductivity than the main body portion is fitted and fixed between the thin portion and the roll.

【０００８】ここでより一層好ましくは、薄肉部分の外
表面の周長を、ヒートシール刃全体の周長の1/4 以上で
1/2 以下とする。More preferably, the peripheral length of the outer surface of the thin portion is 1/4 or more of the peripheral length of the entire heat-sealing blade.
Reduce to 1/2 or less.

【０００９】[0009]

【作用】このヒートシール刃では、それによって包装用
フィルムに横シールを施す場合に、ヒートシール刃の回
転方向前方側の薄肉部分の表面温度が、熱伝導率の高い
異種材料、たとえば銅、アルミニウムなどの作用によ
り、ヒートシール刃の他の部分の表面温度より高くなる
ので、12m/min 以上のラインスピードの下で、そのヒー
トシール刃が包装用フィルムに極めて短時間の接触を行
っても、その接触の開始当初から、ヒートシール刃、と
くにはその回転方向前方側端部分より包装用フィルムへ
の十分な量の熱量が伝達されることになる。従って、包
装用フィルムの溶融樹脂層は、ヒートシール刃に接触す
ると直ちに、所要の深さに溶融され、この結果として、
包装用フィルムは、ヒートシール刃との接触開始端部分
から、高い強度で、常に適正にヒートシールされること
になる。With this heat-sealing blade, when the packaging film is transversely sealed by this, the surface temperature of the thin-walled portion on the front side in the rotation direction of the heat-sealing blade is such that the surface temperature of the different material is high, such as copper or aluminum. Due to the action, etc., the surface temperature becomes higher than the surface temperature of other parts of the heat seal blade, so even under the line speed of 12 m / min or more, even if the heat seal blade makes contact with the packaging film for an extremely short time, From the beginning of the contact, a sufficient amount of heat is transferred to the packaging film from the heat-sealing blade, particularly the front end portion in the rotation direction. Therefore, the molten resin layer of the packaging film, as soon as it comes into contact with the heat seal blade, is melted to the required depth, and as a result,
The packaging film is always heat-sealed properly with high strength from the contact start end portion with the heat-sealing blade.

【００１０】この一方において、ヒートシール刃の回転
方向後方側のヒートシール表面は、ヒートシール刃本体
部分に固有の熱伝導率の下で加熱されることから、その
ヒートシール表面と接触するフィルム部分は、そこか
ら、ヒートシール刃の回転方向前方側よりも幾分少ない
熱量の供給を受けることになるも、そのフィルム部分に
は、ヒートシール刃のみならず、既にヒートシール刃に
接触して溶融樹脂層を溶解されたフィルム部分、いいか
えれば、ヒートシール刃への既接触部分からも熱量が供
給されることになるため、そこへの供給熱量の総量は、
包装用フィルムのヒートシールに過不足のないものとな
る。従って、ヒートシール刃の回転方向後方側部分と接
触する包装用フィルム部分もまた、ヒートシール刃と接
触する領域の全体にわたって適正にヒートシールされる
ことになる。On the other hand, since the heat seal surface on the rear side in the rotation direction of the heat seal blade is heated under the heat conductivity specific to the heat seal blade main body portion, the film portion contacting the heat seal surface is in contact with the heat seal surface. Will receive a little less heat from it than the front side in the direction of rotation of the heat seal blade, but the film part will not only contact the heat seal blade but also melt by contacting the heat seal blade already. The film portion in which the resin layer is melted, in other words, since the heat amount is also supplied from the already contacted portion to the heat seal blade, the total amount of heat supplied to it is
There is no excess or deficiency in heat sealing of the packaging film. Therefore, the packaging film portion that comes into contact with the portion of the heat-sealing blade on the rear side in the rotational direction is also properly heat-sealed over the entire region that comes into contact with the heat-sealing blade.

【００１１】かくして、このヒートシールロールによれ
ば、12m/min 以上の速いラインスピードの下において
も、包装用フィルムに、ヒートシール刃の幅と正確に対
応する、均一幅のヒートシールを施すことができ、シー
ル強度を十分に高めることができる。Thus, according to this heat-sealing roll, even at a high line speed of 12 m / min or more, the packaging film can be heat-sealed with a uniform width that exactly corresponds to the width of the heat-sealing blade. Therefore, the sealing strength can be sufficiently increased.

【００１２】なおここで、より好ましくは、ヒートシー
ル刃の、回転方向前方側の薄肉部分の外表面周長を、ヒ
ートシール刃全体の周長の1/4 以上とすることによっ
て、ヒートシール刃から包装用フィルムへの供給熱量を
十分大ならしめる一方、その外表面周長を、ヒートシー
ル刃全体の周長の1/2 以下とすることによって、ヒート
シール刃の回転方向後方側部分と接触するフィルム部分
の過加熱を回避して、溶融樹脂の、フィルム後方への押
し出しに起因するヒートシール強度の低下および、その
溶融樹脂の被包装物への混入を十分に防止する。[0012] Here, more preferably, by setting the outer surface circumference of the thin portion of the heat seal blade on the front side in the rotation direction to be 1/4 or more of the circumference of the entire heat seal blade, The amount of heat supplied from the to the packaging film is made sufficiently large, while the outer surface circumference is set to 1/2 or less of the circumference of the entire heat-seal blade so that it contacts the rear side in the rotational direction of the heat-seal blade. By avoiding excessive heating of the film portion, the heat seal strength is prevented from being lowered due to the extruding of the molten resin to the rear of the film, and the molten resin is sufficiently prevented from being mixed into the packaged object.

【００１３】[0013]

【実施例】以下にこの発明の実施例を図面に基づいて説
明する。図１はこの発明のヒートシールロールの、自動
充填製袋機への適用状態を例示する縦断面図であり、図
中１は、幅方向の中央部から二つ折りされた包装用フィ
ルムの一例としての積層プラスチックフィルムを、２
は、折り返し状態の積層プラスチックフィルム１の幅方
向の遊端部分に、縦方向の連続的なヒートシールを施す
縦シールロールを、そして３は、プラスチックフィルム
１に、その長さ方向に所定の間隔おいて、フィルム幅方
向のヒートシールを施す、横シールロールとしてのこの
発明のヒートシールロールをそれぞれ示し、また４は、
縦シール終了後のフィルム内側へ、被包装物の一例とし
ての液体を供給するノズルを示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view illustrating an application state of the heat-sealing roll of the present invention to an automatic filling bag-making machine. In FIG. 1, 1 is an example of a packaging film folded in two from the center in the width direction. 2 of laminated plastic film
Is a vertical seal roll that applies continuous heat sealing in the vertical direction to the free end portion in the width direction of the laminated plastic film 1 in the folded state, and 3 is a predetermined interval in the length direction of the plastic film 1. The heat seal roll of the present invention is shown as a horizontal seal roll, which is heat-sealed in the film width direction.
The nozzle which supplies the liquid as an example of a to-be-packaged object to the inner side of a film after completion | finish of a vertical seal is shown.

【００１４】ここで、二本で一対をなす縦シールロール
２のそれぞれは、ヒータ５を内蔵するロール６の軸線方
向の所定位置に、周方向に連続するフランジ状のヒート
シール刃７を突設してなる。Here, each of the pair of vertical seal rolls 2 each having a pair of longitudinal seal rolls 2 is provided with a circumferentially continuous flange-shaped heat seal blade 7 at a predetermined position in the axial direction of the roll 6 containing the heater 5. I will do it.

【００１５】また、横シールロール３は、相互に近接さ
せて平行に配置されて、互いに逆方向に回転駆動される
二本一対のロール８の各々にヒータ９を内蔵させるとと
もに、それらのそれぞれのロール８に、その半径方向外
方へ突出してロール８の長さ方向へ延在する、それと一
体構成もしくは別体構成のヒートシール刃10を設けてな
り、これらの各ヒートシール刃10の外表面は周方向に円
弧状をなす。Further, the horizontal seal rolls 3 are arranged close to each other and in parallel with each other, and a heater 9 is built in each of a pair of two rolls 8 which are rotationally driven in mutually opposite directions, and their respective rolls are also arranged. The roll 8 is provided with a heat-sealing blade 10 which is formed integrally with or separately from the roll 8 and which projects radially outward and extends in the length direction of the roll 8. The outer surface of each of these heat-sealing blades 10 is provided. Has an arc shape in the circumferential direction.

【００１６】この例では、一本のロール８につき、周方
向に等間隔をおいて三本づつ設けたヒートシール刃10の
各々は、二本のロール８の同期した回転運動に基づき、
それに適宜の間隔をおいて、対向する他のヒートシール
刃10との協働下で、二つ折りの積層プラスチックフィル
ム１にその幅方向のヒートシールを施す。In this example, three heat-sealing blades 10 provided at equal intervals in the circumferential direction on one roll 8 each have a function of rotating the two rolls 8 in synchronization with each other.
The two-fold laminated plastic film 1 is heat-sealed in the width direction thereof in cooperation with the other heat-sealing blades 10 facing each other at appropriate intervals.

【００１７】ところで、ここにおける各ヒートシール刃
10の回転方向前方側部分には、ヒートシール刃の径方向
内側部分を切除してなる薄肉部分11を設け、好ましく
は、この薄肉部分11の外表面の周長を、ヒートシール刃
全体の周上の1/4 以上で1/2 以下とする。なお、この薄
肉部分11の厚みは、生産スピードや充填物の御によって
も変化するが、ヒートシール刃の高さの1/30〜1/2 が望
ましい。By the way, each heat seal blade here
A thin portion 11 formed by cutting out a radially inner portion of the heat-sealing blade is provided on the front side portion in the rotation direction of 10, and preferably, the peripheral length of the outer surface of the thin-wall portion 11 is the circumference of the entire heat-sealing blade. 1/4 or more above and 1/2 or less. The thickness of the thin portion 11 varies depending on the production speed and the filling material, but is preferably 1/30 to 1/2 of the height of the heat sealing blade.

【００１８】そして、かかる薄肉部分11とロール８との
間には、主として鋼製ヒートシール刃よりも高い熱伝導
率を有する、例えば、銅、アルミニウムなどの異種材料
12を嵌め合わせ、この異種材料12を、ロール８および薄
肉部分11のそれぞれに、これもまた熱伝導率の高い材
料、たとえば銀ろうによってろう着けする。この場合に
おいて、とくに、異種材料12と、ロール８および薄肉部
分11との間に、断熱層として作用する空気層が残留する
のを防止すべく、好ましくは、予め周面にろう材を付着
させた異種材料12を、加熱・加圧下で、ロール８および
薄肉部分11に、より好ましくはヒートシール刃本体部分
にも、その各面の全体にわたって完全に接合させる。Between the thin-walled portion 11 and the roll 8, a dissimilar material such as copper or aluminum having a higher thermal conductivity than that of the heat seal blade made of steel is mainly used.
12 are fitted together, and this dissimilar material 12 is brazed to each of the roll 8 and the thin-walled portion 11 with a material also having a high thermal conductivity, for example silver braze. In this case, in particular, in order to prevent an air layer acting as a heat insulating layer from remaining between the dissimilar material 12 and the roll 8 and the thin portion 11, it is preferable to preliminarily attach a brazing material to the peripheral surface. The different material 12 is completely bonded to the roll 8 and the thin-walled portion 11, more preferably also to the heat-seal blade main body portion, over the entire surfaces thereof under heating and pressure.

【００１９】図２は、以上のように構成してなる横シー
ルロール３と、積層プラスチックフィルム１との、ヒー
トシール時における相対関係を示す拡大縦断面図であ
り、ヒートシール刃10の回転方向前方側部分は、熱伝導
率の高い異種材料12の作用によって、それがプラスチッ
クフィルム１に接触すると同時に、薄肉部分11を経て多
量の熱量をそのプラスチックフィルム１に供給すること
から、プラスチックフィルム１の溶融樹脂層は、ヒート
シール刃10との接触始端位置から十分な深さに溶融され
ることになり、そのプラスチックフィルム１は、ヒート
シール刃10との接触開始端位置から、適正にかつ強固に
ヒートシールされることになる。FIG. 2 is an enlarged vertical cross-sectional view showing the relative relationship between the horizontal seal roll 3 having the above-described structure and the laminated plastic film 1 at the time of heat sealing. Since the front side portion comes into contact with the plastic film 1 by the action of the different material 12 having high thermal conductivity, a large amount of heat is supplied to the plastic film 1 through the thin portion 11 at the same time. The molten resin layer will be melted to a sufficient depth from the contact start end position with the heat seal blade 10, and the plastic film 1 will be properly and firmly formed from the contact start end position with the heat seal blade 10. It will be heat sealed.

【００２０】これに対し、ヒートシール刃10の回転方向
後方側部分では、ヒートシール刃それ自身の熱伝導率が
異種材料12のそれに比して低いことに起因して、いいか
えれば、ヒートシール刃10の表面温度が回転方向前方側
部分ほどに高温にならないことに起因して、ヒートシー
ル刃10からプラスチックフィルム１への熱伝達量が、回
転方向前方側部分による熱伝達量より幾分少なくなる
も、その後方側部分と接触するフィルム部分は、ヒート
シール刃のみならず、既にヒートシール刃10に接触して
溶融樹脂層を溶融されたフィルム部分からも熱量の供給
を受けることから、前述したように、そこへの供給熱量
の総量は、プラスチックフィルム１のヒートシールに過
不足のないものとなる。On the other hand, in the rear side portion of the heat seal blade 10 in the rotational direction, the heat conductivity of the heat seal blade itself is lower than that of the different material 12. Due to the fact that the surface temperature of 10 does not become as high as the front portion in the rotational direction, the amount of heat transfer from the heat seal blade 10 to the plastic film 1 is somewhat less than the amount of heat transfer in the front portion in the rotational direction. Also, the film portion in contact with the rear side portion is not only the heat seal blade, but since the heat amount is also supplied from the film portion that has already melted the molten resin layer in contact with the heat seal blade 10, it has been described above. As described above, the total amount of heat supplied thereto is sufficient for heat sealing the plastic film 1.

【００２１】従って、ヒートシール刃10の回転方向後方
側部分と接触するフィルム部分もまた、その接触領域の
全体にわたって確実にヒートシールされることになる。Therefore, the film portion in contact with the rear side portion of the heat-sealing blade 10 in the rotation direction is also reliably heat-sealed over the entire contact area.

【００２２】これがため、この横シールロール３によっ
てヒートシールを施した場合には、自動充填製袋装置を
12m/min 以上のラインスピードで運転しても、ヒートシ
ール幅を、図３に仮想線で示すように、ヒートシール刃
10の幅と正確に一致させることができ、ヒートシール強
度を十分に高めることができる。For this reason, when heat sealing is performed by the horizontal seal roll 3, an automatic filling bag making apparatus is used.
Even when operating at a line speed of 12 m / min or more, the heat seal width is as shown by the phantom line in FIG.
The width of 10 can be matched exactly, and the heat seal strength can be sufficiently increased.

【００２３】[0023]

【発明の効果】以上に述べたところから明らかなよう
に、この発明によれば、とくには、ヒートシール刃の回
転方向前方側部分に薄肉部分を設け、その薄肉部分とロ
ールとの間に、ヒートシール刃それ自身より熱伝導率の
高い異種材料を緊密に嵌め合わせて固着して、その薄肉
部分の外表面の温度を十分に高めることにより、12m/mi
n以上の速度で包装用フィルムを走行させても、その包
装用フィルムを、ヒートシール刃との接触始端位置から
接触終端位置までの全体にわたって、常に適正にヒート
シールすることができ、包装用フィルムのヒートシール
強度を大幅に高めることができる。As is apparent from the above description, according to the present invention, in particular, a thin-walled portion is provided on the front side portion in the rotational direction of the heat-sealing blade, and between the thin-walled portion and the roll, By closely fitting and fixing dissimilar materials, which have higher thermal conductivity than the heat-seal blade itself, to sufficiently raise the temperature of the outer surface of the thin part, 12m / mi
Even if the packaging film is run at a speed of n or more, the packaging film can always be properly heat-sealed from the contact start end position to the contact end position with the heat sealing blade. The heat seal strength of can be significantly increased.

【図面の簡単な説明】[Brief description of drawings]

【図１】この発明の適用例を示す縦断面図である。FIG. 1 is a vertical sectional view showing an application example of the present invention.

【図２】図１に示す横シールロールによるヒートシール
の態様を示す拡大縦断面図である。FIG. 2 is an enlarged vertical cross-sectional view showing an aspect of heat sealing by the horizontal seal roll shown in FIG.

【図３】従来のヒートシールロールによる横シール状態
を示す平面図である。FIG. 3 is a plan view showing a laterally sealed state by a conventional heat seal roll.

【符号の説明】[Explanation of symbols]

１ 積層プラスチックフィルム ３ 横シールロール ８ ロール ９ ヒータ 10 ヒートシール刃 11 薄肉部分 12 異種材料 1 Laminated plastic film 3 Horizontal seal roll 8 Roll 9 Heater 10 Heat seal blade 11 Thin part 12 Different materials

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 相互に近接させて配置され、互いに逆方
向に回転駆動される二本一対のロールと、各ロールに内
蔵したヒータと、各ロールに設けられて、その半径方向
外方へ突出するとともに、軸線方向へ延在し、表面が周
方向に弧状をなすヒートシール刃とを具えるヒートシー
ルロールであって、 ヒートシール刃の回転方向前方側を薄肉部分とし、その
薄肉部分とロールとの間に、ヒートシール刃それ自身よ
り熱伝導率の高い異種材料を固着してなるヒートシール
ロール。1. A pair of rolls, which are arranged close to each other and are driven to rotate in opposite directions, a heater incorporated in each roll, and a roll provided on each roll and projecting outward in the radial direction. In addition, a heat-sealing roll that has a heat-sealing blade that extends in the axial direction and has an arcuate surface in the circumferential direction, wherein the front side in the rotation direction of the heat-sealing blade is the thin-walled portion, and the thin-walled portion and the roll. A heat-seal roll formed by fixing a different material having a higher thermal conductivity than the heat-seal blade itself. 【請求項２】 前記薄肉部分の外表面の周長を、シート
シール刃全体の周長の1/4 以上で1/2 以下としてなる請
求項１記載のヒートシールロール。2. The heat seal roll according to claim 1, wherein the peripheral length of the outer surface of the thin portion is 1/4 or more and 1/2 or less of the peripheral length of the entire sheet seal blade.
JP4039453A 1992-02-26 1992-02-26 Heat seal roll Expired - Lifetime JP2501159B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4039453A JP2501159B2 (en) 1992-02-26 1992-02-26 Heat seal roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4039453A JP2501159B2 (en) 1992-02-26 1992-02-26 Heat seal roll

Publications (2)

Publication Number Publication Date
JPH05237939A JPH05237939A (en) 1993-09-17
JP2501159B2 true JP2501159B2 (en) 1996-05-29

Family

ID=12553464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4039453A Expired - Lifetime JP2501159B2 (en) 1992-02-26 1992-02-26 Heat seal roll

Country Status (1)

Country Link
JP (1) JP2501159B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4514903B2 (en) * 2000-06-09 2010-07-28 藤森工業株式会社 Sealing method, sealing device, and bag manufacturing method

Also Published As

Publication number Publication date
JPH05237939A (en) 1993-09-17

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