WO2018225290A1 - 複合ヒートシール構造を形成するヒートシール装置と方法 - Google Patents

複合ヒートシール構造を形成するヒートシール装置と方法 Download PDF

Info

Publication number
WO2018225290A1
WO2018225290A1 PCT/JP2018/001490 JP2018001490W WO2018225290A1 WO 2018225290 A1 WO2018225290 A1 WO 2018225290A1 JP 2018001490 W JP2018001490 W JP 2018001490W WO 2018225290 A1 WO2018225290 A1 WO 2018225290A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
seal
heat seal
heating
belt
Prior art date
Application number
PCT/JP2018/001490
Other languages
English (en)
French (fr)
Inventor
一夫 菱沼
Original Assignee
一夫 菱沼
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 一夫 菱沼 filed Critical 一夫 菱沼
Publication of WO2018225290A1 publication Critical patent/WO2018225290A1/ja
Priority to US16/705,242 priority Critical patent/US11279094B2/en

Links

Images

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
    • B29C66/01—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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/135—Single hemmed joints, i.e. one of the parts to be joined being hemmed in the joint area
    • B29C66/1352—Single hem to hem 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable 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
    • 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
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • 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
    • B29C65/82—Testing the joint
    • B29C65/8207—Testing the joint by mechanical methods
    • 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
    • B29C65/82—Testing the joint
    • B29C65/8253—Testing the joint by the use of waves or particle radiation, e.g. visual examination, scanning electron microscopy, or X-rays
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • B29C66/00441—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool movable, e.g. mounted on reels
    • 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
    • B29C66/006—Preventing damaging, e.g. of the parts to be joined
    • B29C66/0062—Preventing damaging, e.g. of the parts to be joined of the joining tool, e.g. avoiding wear of the joining tool
    • 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
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • 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
    • 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
    • B29C66/70—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
    • B29C66/71—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 composition of the plastics material of the parts 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
    • B29C66/70—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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7371—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 state of the material of the parts to be joined oriented or heat-shrinkable
    • B29C66/73711—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented
    • B29C66/73713—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 state of the material of the parts to be joined oriented or heat-shrinkable oriented bi-axially or multi-axially
    • 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
    • B29C66/80—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
    • B29C66/8122—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 composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • 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
    • B29C66/81427—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 comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/816—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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/83—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
    • B29C66/83421—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types
    • B29C66/83423—Roller, cylinder or drum types; Band or belt types; Ball types band or belt types cooperating bands or belts
    • 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
    • B29C66/91—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
    • B29C66/91211—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 with special temperature measurement means or methods
    • B29C66/91212—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 with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in 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
    • B29C66/90—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
    • B29C66/91221—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 of the parts 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
    • B29C66/90—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
    • B29C66/91231—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 of the joining tool
    • 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
    • B29C66/91421—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 of the joining 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
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91951—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to time, e.g. temperature-time diagrams
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/9241—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force or the mechanical power
    • 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
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • 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
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/18—Applying or generating heat or pressure or combinations thereof by endless bands or chains
    • 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
    • B29C2795/00—Printing on articles made from plastics or substances in a plastic state
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • 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
    • B29C66/70—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
    • B29C66/735—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 extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29L2031/7128—Bags, sacks, sachets

Definitions

  • the present invention relates to a heat seal apparatus and method for forming a composite heat seal structure in which a strip peel seal is added in the longitudinal direction of a strip peel seal.
  • ⁇ Flexible packaging bags using plastic films and sheets are sealed by heat bonding using the thermoplasticity of plastic.
  • the strength of the thermal bonding increases as the temperature of the bonding surface increases, and the adhesive softens and increases in an interfacial adhesion (peeling seal) state between the bonding surfaces.
  • peeling seal interfacial adhesion
  • the sealant layer is pasted and cooled, it becomes cohesive adhesion (breaking seal) in which the adhesive surface is in a molded state (integrated).
  • the bonding strength in the above-mentioned interface adhesion is based on the parameters of the welding surface temperature (heating temperature) and the heating speed (Hishinuma effect).
  • heat seals there are two types of heat seals: a peelable seal that can be peeled off and a tear seal that cannot be peeled off.
  • FIG. 1 A cross-sectional view of an example of a gusset bag is shown in FIG.
  • the gusset bag has gusset folds on both sides, and has a center seal attached to the center in the longitudinal direction. Since these portions are four sheets and there are two sheets between them, the boundary indicated by the black belt in FIG. 2 is a stepped portion. In this figure, the gusset folds on the right side are uneven at the tips and there are also steps.
  • the usual heat sealing method is an intermittent heating method using a heat jaw.
  • a heat seal material is placed between a pair of heating bodies, and one or both heating bodies are moved forward and backward to perform heat sealing.
  • An example of an apparatus used for this is shown in FIG.
  • a heater 511 is embedded in each of the opposed heating bodies 51 and 51, and a heat pipe 512 is further embedded in the vicinity of the heat seal surface.
  • a temperature adjustment or sensor 513 is applied in the vicinity of the heater 511, and a sensor for measuring the heating body surface temperature 514 is attached to the heat seal surface when Patent Document 5 is applied.
  • the heat seal surface is covered with a cover material 52.
  • the heat sealing material (workpiece) 1 is placed on one heating body 51, the other heating body 51 is lowered, and the heat sealing material 1 is pressure-bonded to perform heat sealing.
  • This method is a method in which a heat seal material is sandwiched between a pair of belts and conveyed, and heat sealing is performed with heat supplied from a heating body in contact with the belt therebetween.
  • the apparatus used for this is called a band sealer, and an example of the apparatus is shown in FIG.
  • This device is composed of a pair of opposed sliding belts 62 and a heating body 63 in contact therewith.
  • a heater 631 is embedded in the heating body 63, and a temperature control sensor 633 is provided in the vicinity of the sliding belt 62 of the heating body 63.
  • a sensor for measuring the heating body surface temperature 634 is attached to the contacting surface.
  • Japanese Patent No. 5779291 Japanese Patent No. 3465774 Japanese Patent No. 6032450 Japanese Patent No. 3811145 Japanese Patent No. 4623662
  • the heat jaw method which is a representative technique of intermittent heating, heat-seals work pieces that are heat sealing materials in a stopped state, and possesses many desired functions of heat sealing. It is widely used as a standard.
  • continuous heating has advantages such as no limitation in heat seal length and excellent uniform heating.
  • band sealers the use of metal belts with high thermal conductivity has been considered, but there are problems such as the frictional resistance with the heating element is large, the belt is easily damaged by sliding, and the heating element is also scraped.
  • Ethylene fluoride (Teflon (registered trademark)) impregnated glass wool woven fabric is commonly used as a belt material.
  • FIG. 5 shows the results of measuring the sliding strength (frictional force) by changing the heating body surface temperature from 15 ° C. to 160 ° C. by changing the temperature from 0.6 to 0.6 MPa.
  • the polytetrafluoroethylene-treated belt that is widely used for band sealers is (1) The sliding strength at room temperature was larger than that in the heated state. (2) The sliding strength increases proportionally with increasing pressure. (3) Although the strength indication that a decreasing tendency (becomes slippery) is observed at higher heating temperatures is per 1 cm 2 , the total sliding strength is multiplied by the contact area with the heat bar.
  • Heat seal width 15mm, heat bar length: 200mm, 300mm, pressure contact pressure: 0.3MPa, If the surface temperature of the heated body is 120 ° C, the sliding strength per 1 cm 2 is 2 N / cm 2
  • this load becomes a total load applied to the belt of the apparatus, and becomes the tensile strength of the belt. That is, since this load becomes the tension of the belt, if the length of the heat bar is increased, the load on the belt is proportionally increased. This characteristic has been a limitation in selecting a longer heat bar (heating body). And it inhibits the stability of heating. Furthermore, it is a common problem for band sealers that the surface of the belt and the heating element is damaged due to this large tensile force.
  • An object of the present invention is to provide a heat sealing apparatus and method capable of efficiently performing heat sealing of a composite structure in which a strip peeling seal is added in the longitudinal direction of a strip peeling seal.
  • the present inventor proceeds with intensive studies to solve the above problems, and separates the heating part and the crimping part to share the functions.
  • a part of the workpiece softened by a pair of rollers (die rolls) specially configured immediately after discharge from the belt conveyance heating unit is plastically deformed and sealed with a single protrusion.
  • surface crimping is performed using the flow deformation of the elastic body.
  • the application of the metal belt was considered by weakening the pressure-bonding load of the belt conveyance heating unit by function sharing and eliminating the defective element of the frictional resistance of the heating unit.
  • the present invention has been made based on such knowledge and technology.
  • the pressure-conveying belt conveyance heating unit is composed of a pair of belts that run while being hung between rolls, and a heating body that is disposed at an interval from the belts.
  • a die roll pressure-bonding portion composed of a roll (wire roll 21) having a linear protrusion on the peripheral surface in the circumferential direction and an elastic roll 22 is formed.
  • a heat seal device that forms a composite heat seal structure with a strip peel seal added in the longitudinal direction of the strip peel seal (4) The heat seal material is sandwiched and transported between a pair of belts, Heat to form a strip-shaped heat seal with a peel seal.
  • the belt-shaped heat seal part is passed between the roll (wire roll 21) provided with linear protrusions in the circumferential direction of the surface and the elastic roll 22, and peeled off to the belt-shaped heat seal part.
  • the present invention provides a composite heat seal structure characterized in that a linear seal is created with a seal and the belt-like heat seal is further peeled off and heat sealed with a seal.
  • Heating temperature A general term for the temperature at which a material to be heated is heated; in the heat seal technique, it is in principle the temperature of the welding surface (adhesion surface).
  • ⁇ Temperature adjustment Adjustment value to heat the heating element to a certain temperature
  • Heating element Metal block that has a heat source and adjusted to a predetermined temperature
  • Heating body surface temperature The surface temperature of the heating element is a heating element (heater) Due to differences in heat transfer from and to the surroundings, the temperature of each heating surface will not be the same.
  • Heating surface temperature in contact with the material to be heated is defined as “heated body surface temperature” ⁇ Welding surface (adhesion surface) temperature: Ultimate temperature of the thermal bonding surface of the packaging material ⁇ Welding surface temperature response: Thermal adhesion surface of the packaging material Temperature change response ⁇ Heating rate: Change rate of welding surface temperature (°C / s) ⁇ Equilibrium temperature: temperature at which the weld surface temperature response converges / achieves (more than about 3 times the CUT) • Cam up time (CUT): 95% response time of equilibrium temperature (s) -Interfacial bonding temperature zone: Heating zone where the adhesive surface peels off due to peeling force-Cohesive bonding temperature zone: Heating zone where the sealant melts and the two sealants are integrated (molded)-Boundary temperature zone: in the thermal bonding characteristics Temperature zone in the connection region of the temperature zone where interfacial adhesion and cohesive adhesion occur ⁇ Double-sided heating: A temperature adjustment function is imparted to each
  • the present invention is basically applied to heat sealing at the time of making / sealing a packaging bag, but there are the following four typical bag-making shapes.
  • a four-sided sealing bag that stacks the sheets in a flat shape and seals the four sides
  • a three-sided seal bag that folds the sheet and seals the three sides
  • the envelope bag is made of two overlapping envelopes at the center part of the center seal of the pillow bag.
  • the pillow bag is a modification of the three-side seal bag. First, center the seal with the forming tool so that it is located near the center of the back of the bag. After that, including the part where the newly created center seal part (fin) is folded, the upper and lower parts are sealed and cut.
  • gusset bags will be created if two-line towns ( ⁇ ) are provided on both sides of the pillow bag. Since gusset bags can be made in three-dimensional form, they have the advantage of good product appearance and filling efficiency. When a gusset bag is used, problems similar to those of a pillow bag increase.
  • Pillow packaging bags with good automation are widely used for flexible packaging mainly in the food field.
  • the fins of the center seal also have the convenience of having a tab function when opened.
  • the two parts of the center seal of the pillow bag are overlapped. There is a feature that there are no fins due to the joining of the palms, with a small step on the laminating surface.
  • the film or sheet that is a heat seal material may be a single layer or a plurality of layers as long as there is a layer that can be heat sealed. Usually, it is an ethylene copolymer such as polyethylene or polypropylene. In addition, non-crystallized polyethylene terephthalate can be used.
  • the thickness of the heat-sealable layer is not particularly limited, but is usually about 3 to 200 ⁇ m, typically about 5 to 150 ⁇ m. Referring to the experimental results, the application of the present invention requires a thickness of 10 ⁇ m or more for the heat-sealable layer to make up the stepped portion.
  • At least one adhesive surface layer is provided with an adhesive layer (sealant) that is a heat-sealable layer.
  • an adhesive layer that is a heat-sealable layer.
  • the thickness of the multi-layered film or sheet is not particularly limited, but is usually about 20 to 200 ⁇ m, typically about 20 to 120 ⁇ m.
  • the width of the heat seal of the bag may be a normal width, generally about 3 to 20 mm, typically about 5 to 15 mm.
  • the heat seal width may be the same for all heat seal portions, or may be different for, for example, an upper side seal and a center seal.
  • the composite heat seal structure of the present invention comprises a strip peel heat seal provided in a strip shape by a peel seal, and a linear strip heat seal provided in the longitudinal direction.
  • the stripped heat seal is provided on the side to be opened, and its width is generally about 3 to 30 mm, typically about 5 to 15 mm.
  • the adhesive strength (heat seal strength) as peel strength is usually about 2 to 12 N / 15 mm, preferably about 2 to 10 N / 15 mm. If it is set within this range, for example, it is possible to cope with easy opening for each use with restrictions that are difficult or difficult for a child to open.
  • the bag-breaking resistance is low.
  • Japanese Patent Application Laid-Open No. 2004-228688 the bag breaking stress applied to the heat seal edge inside the bag is protected against wear by the peeling energy of the peeling seal band. Since the strip-like peel heat seal portion is exclusively configured as a place where peeling energy is generated, the peel-off seal strip does not necessarily require complete sealing. (See Figure 13)
  • the width and depth of the line seal formed by the line roll protrusions of the die roll basically match the width and height of the line protrusions.
  • the width of the line seal is about 0.05 to 2 mm, preferably about 0.1 to 1.5 mm, and the height is about 0.05 to 2 mm, preferably about 0.1 to 0.8 mm.
  • the wire seal portion only needs to achieve a sealing function, but the adhesive strength is about 2 to 15 N / 15 mm, preferably about 2 to 12 N / 15 mm.
  • This strip seal is provided in the longitudinal direction of the strip-like heat seal, and it is closer to the outer edge rather than the center of the heat seal surface, and the strip seal surface is placed inside the packaging bag rather than being provided at the center of the strip-like heat seal. It is preferable to provide a large width. For example, a range of about 60 to 90%, preferably about 60 to 80% of the total width with at least 5 mm from the inner edge is appropriate. (Patent Document 4) Although the number of filament seals is one in principle, a plurality of, for example, two or three, can be provided by increasing the local pressure-bonding load as long as the effects of the present invention are not impaired.
  • the heat seal device of the present invention forms such a heat seal having a composite structure, and includes a pressure-conveying belt conveyance heating portion and a die roll pressure-bonding portion.
  • the crimping belt conveyance heating unit is a next die roll crimping unit that runs while being hung between rolls where the heat seal material is heated so that a composite heat seal is formed so as to have a predetermined heat seal strength. It consists of a pair of belts and a heating element disposed at a distance from the belts.
  • the number of rolls is as a rule 2 for each belt and therefore 4 rolls. It is preferable that the rolls be arranged slightly apart on the inlet side of the heat seal material so that the heat seal material can easily enter. On the other hand, while the heat seal material passes through the heating body portion, the distance between the belts is made smaller than the thickness of the heat seal material so that a pressure contact pressure is applied between the belts.
  • a guide roll for regulating the distance on the inlet side of the heat seal material can be arranged on the inlet side to the heating body.
  • This guide roll can also be arranged on the outlet side.
  • One of the rolls to be hung is a normal drive roll, and the other is a driven roll.
  • the drive roll is provided with a mechanism to adjust the rotation speed so that the transport speed can be changed. Further, one or both of the rolls are moved in a direction perpendicular to the conveying direction to change the interval between the rolls so that the pressure contact pressure of the heat seal material can be changed. When providing guide rolls, the interval between the guide rolls can be changed.
  • the belt may be a conventional belt such as a polytetrafluoroethylene-impregnated glass wool woven fabric, but is preferably made of metal in order to increase thermal efficiency.
  • the pressure contact pressure is 0.03 MPa, 0.09 MPa. Then, the temperature response of the weld surface with a gap of 0.1 mm was measured by applying an MTMS kit (Japanese Patent No. 346541) instead of 0.18 MPa. The results are shown in FIG.
  • the response of the polytetrafluoroethylene impregnated sheet with a 0.1 mm gap is far slower than other measurements.
  • the welding surface temperature response is accelerated by pressure welding of 0.03MPa to 0.09MPa. Higher pressure bonding is effective if it is limited to heating response.
  • Cam contact time (CUT) of non-contact welding surface temperature response of stainless steel 0.04mm sheet, which can also be used for belt material shows ⁇ 0.7s, 0.25mm polytetrafluoroethylene impregnated sheet, 0.18MPa pressure welding response Much faster.
  • the use of the stainless steel sheet under pressure contact is difficult in practical use because the frictional force is very large, but the frictional force is zero when there is no contact, so the problem of the metal belt is solved.
  • the superiority of the metal belt represented by the stainless sheet examined in an integrated manner was confirmed.
  • the metal belt is formed of a highly heat-conductive sheet, such as stainless steel, aluminum, or brass, that does not easily rust when heated at about 200 ° C., and has a thickness of about 0.01 to 0.2 mm.
  • the width is such that the heat seal width is slightly wider than that. Since the heat seal width is usually about 5 to 20 mm, the width of this belt is about 5 to 25 mm. Both surfaces are smooth surfaces.
  • the heating body heats the heat seal material through a belt, and is usually formed of a heat conductive material such as aluminum, brass, stainless steel, etc., which does not easily rust when heated at about 250 ° C.
  • An electric heater is usually used as a heat source of the heating body, and this is installed inside the heating body.
  • the heating surface of the heating body is usually a long rectangular shape in the running direction of the belt, and the length is determined so that necessary heating can be performed.
  • the width is usually about 5 to 10 mm larger than the heat seal width.
  • the heating element should be spaced from the belt to prevent damage due to belt sliding.
  • This interval is set so that the pressure contact between the belt and the heating body is 0.02 MPa or less, preferably 0.01 MPa or less.
  • the upper limit of the interval is about 0.2 mm, preferably about 0.1 mm.
  • the die roll crimping part is composed of a linear roll and an elastic roll where the heat seal material heated at a predetermined part by the crimping belt conveyance heating part is crimped to form a composite heat seal structure.
  • the filament roll is a rigid roll formed of a metal such as stainless steel or brass, a ceramic, a polytetrafluoroethylene or DLC coat, or the like.
  • the diameter is about 40 to 100 mm
  • the width of the surface in contact with the elastic roll is the width of the strip-shaped peel seal.
  • the position, height, and width of the line protrusion are matched with the line seal to be formed.
  • the contact time with the heat seal material is shorter than the thermal response of the material, so it is not very effective. This is a preferable direction even if the temperature rises due to residual heat due to continuous operation.
  • the elastic body roll may be formed of an elastic body as a whole, but may be one in which an elastic sheet is attached to the peripheral surface of a normal roll.
  • the material of the elastic body may be any material as long as it has the necessary elasticity and can withstand the heat seal temperature.
  • silicon rubber can be used.
  • those having a thickness of 3 to 5 mm and a hardness of about A50 to A80 are preferable.
  • the diameter of the elastic body roll is usually about 40 to 100 mm in consideration of the consumption of the elastic body due to continuous operation, and the width should be more than 2 mm from both ends that are in pressure contact with the filament roll.
  • At least one of the linear roll and the elastic roll can be freely moved under the required load so that it can move up and down corresponding to the total dimension of the elastic deformation due to the pressure change and the thickness of the heat seal material. Make the structure. Further, the pressure can be adjusted to a predetermined constant pressure.
  • both the filament roll and the elastic roll are driven at the same rotational speed so as to coincide with the conveyance speed of the heat seal material conveyed from the crimping belt conveyance heating unit.
  • the drive source of the belt and the die roll is the same, or electrical control of the rotational speed is used.
  • the present inventor has found that the temperature is lowered by the conveyance between the crimping belt conveyance heating unit and the linear roll crimping unit, which may cause a problem in heat sealing. That is, in the present invention, the transfer from the belt conveyance heating unit to the linear roll crimping unit is performed through the space. Therefore, the measurement result of the temperature drop of the heat seal material during this period is shown in FIG.
  • the discharge speed of the heat seal material varies depending on the heating setting conditions of the transport heating unit.
  • Table 1 shows the result of trial calculation of the die roll pressure roll diameter and the passing time of the driving roll 31 (the heat retention interval). Using a die roll diameter of 50 mm as an example, examine the passage time.
  • the belt speed is 10 m / min., 0.6 s, 6 m / min., 1.0 s, and 5 m / min., 1.6 s. In both cases, it was found that it is difficult to complete the adhesion with the separated die roll because the exposed surface temperature response exceeds the appropriate range in the exposure transfer.
  • the combination of the belt speed and roll diameter in Table 1 was divided by a thick line of reference. In the normal range of application of belt speed and roll diameter, active thermal insulation with a heating function is required.
  • a heat insulating plate coupled to a heat source was provided.
  • the gap of the heat insulating plate was set to 2 to 5 mm so as not to restrain the movement of the heat seal material.
  • the heating temperature of the heat insulating plate may be set to about 5 ° C. higher than the welding surface temperature of the conveyance heating unit, and precise temperature adjustment is not required.
  • the structure of the heat insulating plate has made it possible to reliably achieve single-line sealing and flat surface crimping even under low-speed operating conditions.
  • the heat seal of the composite structure using such an apparatus is performed by heating the heat seal material to an appropriate temperature in the pressure-conveying belt conveyance heating unit and performing appropriate pressure-bonding in the die roll pressure-bonding unit.
  • This heating condition varies depending on the heat seal material, the temperature and length of the heating element, and the conveyance speed.
  • the combination of the length of the heating element and the belt speed is selected, and the heating time is determined by the following equation.
  • Heating body length L (m) ⁇ Belt transport speed: V (m / s), ⁇ Necessary heating time: t (s) (measured using “MTMS” kit)
  • This time needs to be larger than the response time set from the welding surface temperature response of the integration of the belt material and the heat seal material.
  • the heating mechanism of the band sealer can be developed in the same way as the theory of the heat jaw method.
  • the weld surface temperature response can be measured using the surface temperature of the heating element as a parameter.
  • the model is shown in FIG.
  • the weld surface temperature response eventually approaches the heating body surface temperature. However, since the reaching point is an asymptote, it is difficult to define practically.
  • the inventor adopts the arrival time of 95% value and defines CUT (Come Up Time).
  • T 95 is estimated to obtain 115 ° C. and 143.5 ° C.
  • the difference between CUT and equilibrium temperature is 5 °C and 6.5 °C.
  • T1 When performing thermal bonding (heat sealing), refer to the response characteristics as shown in FIG. 8 and select T1 whose heating body surface temperature is a little higher than the target temperature (2 to 3 ° C.). Alternatively, far higher temperatures such as T2 and T3 are selected, and the heating temperature is determined by time control when T1 passes.
  • the time required for the weld surface temperature is large.
  • the heating time is shortened, the appropriate time range is very small, so that a high degree of time control is required and the finish becomes unstable.
  • the heating time per product is determined by the integration of three points: the length of the heating element, the speed of the belt, and the heat transfer response characteristics of the sliding belt and workpiece.
  • Table 2 shows the relationship between the heating time determined by the length of the heating element and the speed of the belt.
  • Each pass (heating) time shown here determines design conditions and operating conditions in contrast to the heat transfer response of the belt and heat seal material shown above.
  • the length of the heating element is determined at the time of manufacture, so it cannot be selected in the operating state.
  • the heating time can be 1 s. Therefore, the length of each heating element is extended to 6 m / min at 100 mm. For 200 to 400 mm, speeds of 8 m / min. Or more are possible.
  • the pressure at the die roll pressure bonding part varies depending on the heat seal material and the heating temperature (softening characteristics).
  • Measured results are standardized by converting the measurement results into a linear load per 1 cm length of one protrusion on the crimp bar.
  • Table 3 summarizes the test results of samples of OPP (biaxially oriented polypropylene; Young's modulus about 2,000), which is the hardest and most difficult to seal, packaging materials on the market. (Application example of Patent Document 3)
  • a linear load of 26 to 120 N / cm was applied to each heating temperature (heating body surface temperature).
  • a linear load of 83 N / cm was required at 114 ° C. when softening began.
  • the temperature was changed from 116 ° C. to 42 N / cm, and the sealing was completed with a practical load. Since this material is biaxially stretched, shrinkage occurs when heating approaches the melting temperature, so the upper limit application temperature is around 140 ° C.
  • FIG. 10 shows a side view of the schematic structure of a heat seal apparatus according to an embodiment of the present invention
  • FIG. 11 shows a front view of the die roll crimping portion.
  • the pressure-conveying belt conveyance heating unit 3 is arranged between a pair of stainless steel belts 33 having a thickness of 0.04 mm, which are hung between the rolls 31 and 32 and run at intervals of 0.1 mm. It consists of the heating body 34 made. In the case of 200mm, if the heating body and 0.25mm polytetrafluoroethylene belt are used and adjusted to fine pressure welding and heating time of 3.0s is secured, the fastest belt speed (upper limit of speed) is 4m / min. Higher speeds become transient heating conditions that make the heating conditions unstable.
  • the left roll 31 in FIG. 10 is a drive roll, and the right roll 32 is a driven roll.
  • the opposing drive roll 31 and driven roll 32 are pressed against the work 1 that is a heat seal material by adjusting the interval.
  • the pressure can be changed.
  • the drive roll 31 can change the conveyance speed of the workpiece 1 by changing the rotation speed.
  • Each of the heating elements 34 is a rectangular parallelepiped having a length of 200 mm, a heater 341 is embedded therein, and a heat seal pipe 342 and a sensor 343 for measuring the surface temperature of the heating element are further embedded on the belt surface side. ing.
  • All the heating elements 34 can adjust the distance from the belt 33.
  • the die roll press-bonding portion 2 is composed of a linear roll 21 and an elastic roll 22 each having a single-row projection 211 with a circumferential height of 0.3 mm and a semicircular cross section.
  • the elastic roll 22 has a width of 25 mm, and has a structure in which a sheet of silicon rubber elastic body 221 having a thickness of 4 mm and a hardness of A70 is attached on a normal roll.
  • the wire roll 21 has a width of 20 mm and a diameter of 50 mm ⁇ , and as shown in FIG. 11, a crimping pressure adjusting spring 23 is attached to the rotating shaft, so that the crimping pressure of the wire roll 21 can be adjusted by applying spring pressure. It has become.
  • the crimping load can be easily adjusted by adjusting the air pressure. Furthermore, automatic vertical movement is possible under constant pressure bonding. Further, the load on the elastic body roll 22 can be easily released during operation standby, and the wear of the elastic body can be reduced.
  • the linear roll 21 and the elastic roll 22 are synchronously rotated by meshing gears.
  • a motor that can be finely adjusted electrically was applied as the drive source, and was matched with the work entry speed.
  • a heat retaining unit 4 is provided between the pressure-bonding belt conveyance heating unit 3 and the die roll pressure-bonding unit 2, for avoiding a temperature drop of the work 1 during the transfer.
  • the heat retaining unit 4 has a right side of two heat retaining plates 41 arranged in parallel, fixed to a heating body 42 including a heater 421, and an outer surface covered with a heat retaining material 43. It has a broken structure.
  • the work 1 is carried in between the rolls 32 and 32 from the right side of the drawing of FIG. And while being pinched
  • the linear roll 21 and the elastic roll 22 first cause the linear portion of the workpiece to be depressed into the elastic body 221 by the single protrusion 211 to form a single-line seal, and the process shifts to crimping of the flat portion.
  • the portion corresponding to the planar step between the four pieces and the two pieces presses the two pieces by fluid deformation of the elastic body.
  • a laminated sheet of 25 ⁇ m thick OPP and 30 ⁇ m cohesive failure sealant was used as a heat seal material to which Patent Document 3 was applied.
  • the heat seal was a peel seal that had a total strip width of 15 mm and a strip width of 0.3 mm and could be picked and opened at about 8 N.
  • the flaw detection liquid was instilled into the inner heat seal line, and the completion of sealing on the single seal line of the entire heat seal surface including the stepped portion was confirmed. A photograph of this state is shown in FIG.
  • the heat sealing apparatus and heat sealing method of the present invention can be efficiently sealed even if there is a difference in the heat sealing surface such as a pillow bag or a gusset bag, and thus can be widely used for heat sealing of packaging bags and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合構造のヒートシールを効率よく行うことができるヒートシール装置および方法を提供する。　上記課題は、ロール間に掛架されて走行する一対のベルトと該ベルトと間隔をおいて配置された加熱体よりなる圧着ベルト搬送加熱部と、周面に線条突起が周方向に設けられた線条ロールと弾性体ロールよりなるダイロール圧着部よりなる帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合ヒートシール構造を形成するヒートシール装置と、方法によって解決される。

Description

複合ヒートシール構造を形成するヒートシール装置と方法
　本発明は、帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合ヒートシール構造を形成するヒートシール装置および方法に関するものである。
　プラスチックフィルムやシートを適用した柔軟包装袋はプラスチックの熱可塑性を利用した熱接着（ヒートシール）で密封されている。この熱接着の強さは、図１に示すように、接着面の温度上昇と共に接着剤が軟化して接着面間の界面接着（剥がれシール）状態で上昇し、溶融状態に到達すると接着層（シーラント層）はペースト状になって冷却すると接着面がモールド状態（一体）になった凝集接着（破れシール）となる。上記の界面接着での接着強さは、図１に示すように、溶着面温度（加熱温度）と加熱速さ（Ｈｉｓｈｉｎｕｍａ効果）がパラメータになっている。
　このようにヒートシールには、接着面が剥離可能な剥がれシールと剥離できない破れシールがあるが、開封の便利さから全面的な剥がれシール適用の期待が高まっている。
　ヒートシールによって形成される袋にはいくつかの種類があるが、そのなかで、ガセット袋などの場合には、ガセット折部やセンターシール部をさらにヒートシールする端部では袋を形成するフィルムやシートの枚数が増し、その境界が段差になっている。ガセット袋の一例の横断面図を図２に示す。同図に示すように、ガセット袋は、両側にガセット折部があり、中央縦方向には合掌貼りされたセンターシールがある。これらの個所は４枚部となっており、その間は２枚部となっているので、図２に黒帯で示すその境界は段差部になっている。この図では、右側のガセット折部は先端が不揃いになっていてそこにも段差がある。このような段差がある袋を剥がれシールでヒートシールすると段差部に漏れを生じていることを本発明者は発見し、この問題を、帯状に形成されている剥がれシールの長尺方向に線条シールを付加する新たなヒートシール構造を開発して解決した（特許文献１）。
　通常のヒートシール方法は、ヒートジョーを用いた間欠式の加熱方法である。この方法は、一対の加熱体の間にヒートシール材料を置き、一方又は双方の加熱体を進退させてヒートシールを行なう方法である。これに用いる装置の一例の概略を図３に示す。この装置において、対向する加熱体５１、５１はそれぞれ内部にヒーター５１１が埋設され、そのヒートシール面近傍にはさらにヒートパイプ５１２が埋め込まれている。いずれの加熱体５１、５１もヒーター５１１の近傍には温度調節やセンサ５１３、特許文献５を適用した場合はヒートシール面には加熱体表面温度５１４を測定するセンサが取り付けられている。そして、ヒートシール面はカバー材５２で覆われている。ヒートシール材料（ワーク）１を一方の加熱体５１の上に置き、他方の加熱体５１を下降させてヒートシール材料１を圧着してヒートシールを行なう。
　運転開始前に材料が接触する加熱体の表面温度をパラメータにして、ヒートシール材料１間に挿入した微細センサで溶着面温度７を測定する。この検証で溶着面温度は加熱体の表面温度の管理で運転中も正確に把握できる（特許文献２）。ヒートシール終了後は加熱体５１を上昇させてヒートシール材料１を取り出し、この間欠動作５３を繰返す。線条シールを付加する方法では、加熱体５１のヒートシール面に線条の突起、他方の加熱体５１の表面には3～5mmの耐熱弾性体を（図示されていない。）を設けている。この場合、カバー材は装着しない。
　ヒートシール方法にはベルトを用いた連続式加熱の方法もある。この方法には、ヒートシール材料を一対のベルト間に挟んで搬送し、その間にベルトに接する加熱体から供給される熱でヒートシールを行なう方法である。これに用いる装置はバンドシーラーと呼ばれ、その一例の概略を図４に示す。この装置は、対向する一対の摺動ベルト６２とそれに接する加熱体６３よりなり、加熱体６３にはヒーター６３１埋設され、その近傍には温度調節センサ６３３が、加熱体６３の摺動ベルト６２に接する面には加熱体表面温度６３４を測定するセンサが取り付けられている。ヒートシール材料１を摺動ベルト６２の入口側から挿入して搬送させると加熱体６３部を通過する間にヒートシールされてベルト６２の出口側から排出される。
（1）間欠式加熱の特徴
　　1）ヒートバーの長さによって、包装製品の最大のヒートシール幅が制限される。
　　2）必要な付加圧着力はヒートシール面積に比例する
　　3）加熱中の接着面は固定され、圧着が確実になる
　　4）ヒートシール幅の全体が同時に並列な加熱進行する
　　5）加熱体の温度斑がそのまま加熱面に影響する
　　6）接着面に固有の細工付与ができる
　　7）材料が加熱体に直接接触できるので、加熱効率が高い
　　1）、2）、5）は間欠式加熱の短所になっている
　　3）、4）、6）、7）は間欠式加熱の長所になっている
（2）連続式加熱の特徴
　　1）包装袋のヒートシール幅の長さに制約がない加熱ができる
　　2）各ヒートシール部位は加熱面の全てが摺動通過するので均一加熱になる。
　　3）搬送ベルト摺動又は空隙を介しての加熱になるので加熱効率が低くなる
　　4）加熱中の高圧着圧の実施が容易でない
　　5）接着面に固有の細工付与が困難
　　6）金属ベルトは加熱体との摩擦抵抗が大きいのでの適用が困難
　　1）、2）は連続式加熱の大きな長所である
　　3）、4）、5）、6）連続式加熱の短所である
特許第５７７９２９１号公報 特許第３４６５７４１号公報 特許第６０３２４５０号公報 特許第３８１１１４５号公報 特許第４６２３６６２号公報
　ヒートシール方法としては間欠式加熱の代表技法であるヒートジョー方式は、ヒートシール材料であるワークを停止状態でヒートシールしていて、ヒートシールの所望の機能を多く保有しており、産業界では標準的に多用されている。一方、連続式加熱は、ヒートシール長さに制限がない、均一加熱に優れる等の利点がある。バンドシーラーでは熱伝導性の高い金属ベルトの採用が考えられたが加熱体との摩擦抵抗が大きく摺動によりベルトが損傷しやすく、加熱体も削られてしまう等の問題があり、ポリ四フッ化エチレン（テフロン・登録商標）含浸グラスウール織布がベルト材として常用されている。
　加熱体に真鍮を用い、ベルト材には厚さ０．２５ｍｍのポリ四フッ化エチレン含浸グラスウール織布と厚さ０．２ｍｍのステンレススチールを用いて、加熱体によるベルトの圧接圧を０．０５ＭＰａから０．６ＭＰａまで変え、加熱体表面温度を１５℃から１６０℃まで変えて滑り強さ（摩擦力）を測定した結果を図５に示す。同図に示すように、バンドシーラーに汎用的に使用されているポリ四フッ化エチレン処理されたベルトは、
（1）室温状態の滑り強さは加熱状態より大きな値を示した。
（2）圧接圧の増加と共に比例的に滑り強さは増加する。
（3）加熱温度が高くなると低下傾向（滑りやすくなる）が観られる
強さ表示は１cm2当たりであるが、総合の滑り強さはヒートバーとの接触面積を乗じた大きさになる。
　ヒートシール幅：15mm、ヒートバー長さ：200mm，300mm、圧接圧：0.3MPa、
加熱体表面温度：120℃　とすると１cm2当たりの滑り強さは2N/cm2　から
Figure JPOXMLDOC01-appb-M000001
 となる。
　実際にはこの荷重が装置のベルトに掛かる総合的負荷となり、ベルトの引張り強さとなる。即ちこの荷重はベルトのテンションになるので、ヒートバーの長さを大きくするとベルトへの負担が比例的に増加する。この特性がより長いヒートバー（加熱体）の選択の制約になっていた。そして加熱の安定性を阻害している。更に、この大きな引張力ためにベルトと加熱体の表面の損傷が発生することがバンドシーラーの共通的な課題になっている。
　従来は避けられている金属シート（ステンレス）の滑り強さの計測結果を併せて図５中に示した。ポリ四フッ化エチレン含浸シートに対して約５倍程度大きく、熱伝導性が大きい特長のある金属ベルトの適用が困難であることを実測で確認した。
　ワークを直接加熱体に接触したり、熱風吹き付けする方法も散見されるが、包装袋の損傷が起こる問題がある。従来のバンドシーラーはベルトを介して、溶着面を密着させているので、加熱体表面に一条突起や弾力性を持たせるような細工ができない欠点があることがわかった。
　本発明の目的は、帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合構造のヒートシールを効率よく行うことができるヒートシール装置および方法を提供することにある。
　本発明者は、上記課題を解決するべく鋭意検討を進め、加熱部と圧着部を分離して、機能分担を図る。ベルト搬送加熱部からの排出直後に特別に構成された一対のローラー（ダイロール）で軟化したワークの一部分を一条突起で塑性変形密封する。同時に弾性体の流動変形を利用して面圧着する。機能分担によって、ベルト搬送加熱部の圧着荷重を微弱化し、加熱部の摩擦抵抗の不具合要素を排除することで金属ベルトの適用化を考えた。加熱と圧着の機能分担によって、特許文献１と同等な密封と易開封操作を連続操作構成（バンドシール）において実施することができた。
　本発明はこのような知見と技術に基づいてなされたものである。（図１０参照）
（1）圧着ベルト搬送加熱部はロール間に掛架されて走行する一対のベルトと該ベルトと間隔を置いて配置された加熱体よりなる。
（2）周面に線条突起が周方向に設けられたロール（線条ロール２１）と弾性体ロール２２よりなるダイロール圧着部を構成する。
（3）帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合ヒートシール構造を形成するヒートシール装置
（4）ヒートシール材料を、一対のベルトで挟んで搬送し、その間に加熱して、剥がれシールで帯状のヒートシールを形成する。
（5）次いで、該帯状のヒートシール部を表面の周方向に線条突起が設けられたロール（線条ロール２１）と弾性体ロール２２の間を通過させて該帯状のヒートシール部に剥がれシールで線条の密封シールを作成するとともに該帯状のヒートシール部もさらに剥がれシールでヒートシールする構成
とすることを特徴とする複合ヒートシール構造を提供するものである。
本発明の効果を次に列挙する。
１）ダイロールを設置したバンドシーラーにおいて、ピロー袋、ガセット袋等の段差のあるヒートシール面を線条シールと帯状シールの複合適用で段差部の「密封」と「易開封」が達成できる。
２）バンドシーラーの摺動ベルトの圧接圧の極小化によるベルトの長寿命化が図れる
３）加熱体の長尺化が容易になって、バンドシーラーの熱接着の高速化で生産性の向上が図れる。
４）適用包装材料や包装形体の制限が小さくなる。
５）金属ベルトが利用できるようになった。
６）バンドシーラーのヒートシールValidation性能（合理的な「密封」と「易開封」が可能）が大幅に上昇した。
溶着面温度と接着強さの関係を模式的に示すグラフである。 加熱体で圧着した際のガセット袋の横断面図である。 ヒートジョー方式でヒートシールを行なう状態を模式的に示す側面断面図である。 バンドシーラーでヒートシールを行なう状態を模式的に示す側面断面図である。 ベルト材にポリ四フッ化エチレン含浸グラスウール織布とステンレススチールシートを用い、加熱体温度を変えて、圧接圧と滑り強さ（摩擦力）の関係を示すグラフである。 ベルト材にポリ四フッ化エチレン含浸グラスウール織布とステンレススチールシートを用い、圧接圧を変えて、加熱時間と溶着面温度応答の関係を示すグラフである。 ベルト加熱排出後の温度低下を示すグラフである。 加熱時間と溶着面温度の変化を模式的に示すグラフである。 折り曲げ部の密閉性の試験方法を模式的に示した側面断面図である。 本発明の一実施例であるヒートシール装置の概略を示す側面図である。 そのダイロール圧着部の正面図である。 その保温部の概略構造を示す側面断面図である。 上記のヒートシール装置でヒートシールした袋の密閉性を調べた結果を示す写真である。
（本説明に利用される温度表示の定義）
　先ず発明の詳細な説明に使用する温度表示の解説をする。
　・加熱温度：被加熱材を加熱する温度の総称；ヒートシール技法においては、原則として溶着面（接着面）温度である。
　・調節温度：加熱体を一定温度に加熱する調節値
　・加熱体：発熱源を有し、所定の温度に調節された金属ブロック
　・加熱体表面温度：加熱体の表面温度は発熱体（ヒーター）からの伝熱、周辺への放熱の相違によって、それぞれの加熱面の温度は同一にならない。
　・被加熱材料と接触する加熱面温度を「加熱体表面温度」と定義
　・溶着面（接着面）温度：包装材料の熱接着面の到達温度
　・溶着面温度応答：包装材料の熱接着面の温度の変移応答
　・加熱速さ：溶着面温度の変化速さ（℃／ｓ）
　・平衡温度:溶着面温度応答が収斂／到達する温度（CUTの約3倍以上）
　・カムアップタイム（CUT）：平衡温度の95％応答の時間（s）
　・界面接着温度帯：剥がし力によって接着面が剥離する加熱帯
　・凝集接着温度帯：シーラントが溶融して2面のシーラントが一体化（モールド化）する加熱帯
　・境界温度帯：熱接着特性において界面接着と凝集接着の発現する温度帯の
　　接続領域の温度帯
　・両面加熱：一対の加熱体のそれぞれに温度調節機能を付与する。通常は同一温度に設定
　・片面加熱：加熱面の一方を格別の温度制御をせずに環境条件に依存させる。
　本発明は、基本的には、包装袋を製袋／密封する際のヒートシールに適用されるものであるが、代表的な製袋形状は次の４つである。
　（1）シートを平面状に重ねてその４辺をシールする四方シール袋、
　（2）シートを折り重ねて３辺をシールする三方シール袋、
　（3）折り目の対面のシール面を包装商品の裏面のセンター付近に位置させ、商品の正面側からシール面が上下の２個所しか見えないようにしたピロー袋がある。
　（4）封筒袋はピロー袋のセンターシールの合掌貼り部を２枚の重ね合わせの封筒貼りにする。
　ピロー袋は三方シール袋の変形である。袋の背面の中央付近に位置するよう成形具を使って合わせ線を先ずセンターシール(合掌貼り)する。その後に新たにできたセンターシール部（フィン）を折り重ねた部位を含めて、上下部のシールを行いカットする。
　平面形態から立体形態にしやすいので広く利用されている。
　ピロー袋の両側に２ラインのまち（襠）を設けるとガセット(Gusset)袋になる。ガセット袋は立体状の製袋が可能なので、商品の見栄え性や充填効率がよい特長がある。ガセット袋にするとピロー袋と同様な課題が増加発生する。
　自動化性が良好なピロー包装袋は食品分野を中心に軟包装に数多く利用されている。センターシールのフィンは開封時タブの機能を有する利便性もある。
　封筒袋はピロー袋のセンターシールの合掌貼り部を２枚の重ね合わせにする。 貼り合わせ面の段差が小さい、合掌貼りによるフィンがなくなる特徴がある。
　しかし材料の両面に接着能力のあるシーラントを設ける必要がありコスト高になるので用途が限られている。
　ヒートシール材料であるフィルムやシートは、ヒートシールできる層があれば単層であっても複数層から形成されていてもよい。通常は、ポリエチレン、ポリプロピレンなどのエチレン共重合体などである。その外、結晶化していないポリエチレンテレフタレートなども用いうる。ヒートシールできる層の厚さも特に制限されないが、通常3～200μm程度、典型的には5～150μm程度である。実験結果を参照してみると本発明の適用には段差部の埋め合わせのためにヒートシールできる層は10μm以上の厚さが必要である。
　複数層からなるフィルムやシートは、印刷適性、破損耐性、ガスバリア性の向上、製袋の剛性調整、軟化状態の加熱板への粘着防止の改善等を期して、２種以上の材料を積層したものである。少なくとも一方の接着面層にはヒートシールできる層である接着層（シーラント）が配置される。従来は袋の外面となる表層材と接着層の適用温度域が大きな差を持たせるような設計が“良好”とされ、低温化材料が適用されていた。
この選択は平面接着には好都合である。しかし、屈曲部があるシールでは、屈曲剛力が大きい表層材は接着層の適正加熱温度帯では軟化が小さく、密着シールの阻害要因（貫通孔の発生）になっている設計の不具合に気が付いていなかった。（特許文献３）
　複数層からなるフィルムやシートの厚さも特に制限されないが、通常20～200μm程度、典型的には20～120μm程度である。
　袋のヒートシールの幅も通常の幅でよく、一般に3～20ｍｍ程度、典型的には5～15ｍｍ程度である。このヒートシール幅はヒートシール部全てが同一でもよく、あるいは、例えば上辺シールとセンターシールで異なっていてもよい。
　本発明の複合ヒートシール構造は、剥がれシールで帯状に設けられた帯状剥がれヒートシールと、その内に長尺方向に設けられた線条剥がれヒートシールよりなる。
　帯状剥がれヒートシールは包装袋の場合には開封しようとする辺に設けられ、その幅は、一般に３～３０ｍｍ程度、典型的には５～１５ｍｍ程度である。剥がれ強さである接着強度（ヒートシール強さ）は通常２～１２Ｎ／１５ｍｍ程度、好ましくは２～１０Ｎ／１５ｍｍ程度が好ましい。この範囲に設定すれば例えばこどもでも開け易くあるいは開け難い制限のある用途別の易開封に対応できる。
　線条シール部は微小な幅（線条）なので破袋耐性は小さい。袋の内側のヒートシールエッジに掛った破袋応力を特許文献４の適用で、剥がれシール帯の剥離エネルギーで消耗防御する。帯状剥がれヒートシール部は専ら剥離エネルギーの発生場所として構成するので、剥がれシール帯は必ずしも完全な密封を要求しない。（図１３参照）
　ダイロールの線条突起で形成される線条シールの幅と深さは、基本的には線条突起の幅と高さに一致する。この線条シールの幅は０．０５～２ｍｍ程度、好ましくは０．１～１．５ｍｍ程度であり、また高さは0.05～2ｍｍ程度、好ましくは0.1～0.8ｍｍ程度である。
　線条シール部分は専ら密封機能が達成すればよいが、接着強さは２～１５Ｎ／１５ｍｍ程度、好ましくは２～１２Ｎ／１５ｍｍ程度とするのがよい。
　この線条シールは帯状剥がれヒートシールの長手方向に設けられ、ヒートシール面の中央ではなく外縁に寄せて線条シールを帯状剥がれヒートシールの中央に設けるよりも剥がれシール面を包装袋の内側により大きく設けることが好ましく、例えば、内縁から少なくとも５ｍｍを確保して全幅の60～90％程度、好ましくは60～80％程度の範囲が適当である。（特許文献４）
　線条シールは、原則として1本であるが、本発明の作用効果を損なわない範囲で、局部圧着荷重を増加して複数、例えば２本あるいは３本設けることも可能である。
　ヒートシール面が曲線の場合には、一条突起の曲線模様をワークの進入に同期させ、線条シールをこの曲線に沿って設けることが好ましい。
　本発明のヒートシール装置は、このような複合構造のヒートシールを形成するものであり、圧着ベルト搬送加熱部とダイロール圧着部よりなる。
　圧着ベルト搬送加熱部は、次のダイロール圧着部で、予め定めたヒートシール強さになるように複合ヒートシールが形成されるようにヒートシール材料を加熱するところでロール間に掛架されて走行する一対のベルトと該ベルトと間隔を置いて配置された加熱体よりなる。
　ロールの数は、原則として各ベルト当たり２個、従って４個である。ロールは、ヒートシール材料の入口側はヒートシール材料が進入しやすいよう少し離して配置するのがよい。一方、ヒートシール材料が加熱体部を通過する間は、両ベルト間に圧接圧が付与されるよう、両ベルトの間隔がヒートシール材料の厚みより小さくなるようにする。
　そのために、ヒートシール材料の入口側の間隔を規制するガイドロールを加熱体への入口側に配置することができる。このガイドロールはさらに出口側にも配置することができる。掛架されるロールの一方は通常駆動ロールであり、他方は従動ロールである。
　駆動ロールは回転速度を調整する機構を設けて搬送速度を変えられるようにする。また、ロールの一方又は両方を搬送方向と直角方向に移動させてロール間の間隔を変えてヒートシール材料の圧接圧を変えられるようにする。ガイドロールを設ける場合は、ガイドロール間の間隔を変えられるようにすることもできる。
　ベルトは、ポリ四フッ化エチレン含浸グラスウール織布のような従来のものでもよいが、熱効率を高めるために金属製のものが好ましい。
　これを、従来のベルトの代表例として、厚さ0.25mmポリ四フッ化エチレン含浸グラスウール織布、金属製のベルトの代表例として厚さ0.04mmのステンレスシートを用い圧接圧を0.03MPa、0.09MPa、0.18MPaに変えて0.1mmのギャップの溶着面温度応答をMTMSキット（特許第3465741号）を適用して計測した。この結果を図６に示した。
　その結果、ポリ四フッ化エチレン含浸シートは0.1mmのギャップ（非接触）のある応答は他の計測よりかけ離れて遅い。0.03MPaから0.09MPaの圧接では溶着面温度の応答が早まる。加熱応答に限ってみれば高圧着化が有効となっている。
　加熱応答を速めるもう一つのパラメータの圧接圧の影響を摺動摩擦力で診ると既に図５に示したように圧接圧の増加には大きな課題があることが分る。
　ベルト材にも利用が可能なステンレス0.04mmシートの非接触の溶着面温度応答のカムアップタイム（CUT）は≒0.7ｓを示し、0.25mmのポリ四フッ化エチレン含浸シート、0.18MPa圧接の応答よりはるかに速い。圧接下のステンレスシートの利用は摩擦力が非常に大きいので実用性に難があるが、無接触では摩擦力はゼロになるので、金属ベルトの問題は解消される。統合的に診たステンレスシートに代表される金属製のベルトの優位性を確認した。
　金属製のベルトは、ステンレススチール、アルミニウム、真鍮などの２００℃程度の加熱で錆が出にくい高伝熱性シートで形成され、厚みは０．０１～０．２ｍｍ程度である。幅は、ヒートシール幅が、それよりやや広い程度である。ヒートシール幅は通常５～２０ｍｍ程度であるので、このベルトの幅は５～２５ｍｍ程度が適当である。表面は、両面とも平滑面である。
　加熱体は、ベルトを通じてヒートシール材料を加熱するものであり、通常はアルミニウム、真鍮、ステンレススチールなどの２５０℃程度の加熱で錆が出にくい伝熱性材料で形成される。加熱体の熱源には、通常電気ヒーターが用いられ、これは加熱体の内部に設置される。
　加熱体の加熱面は、通常はベルトの走行方向に、長尺の長方形状とされ、その長さは必要な加熱ができるように定められる。また、幅は、通常ヒートシール幅より５～１０mm程度大きくする。
　加熱体は、ベルトの摺動による損傷を防ぐために、ベルトと間隔を置くのがよい。この間隔はベルトと加熱体の間に圧接圧が0.02ＭＰａ以下、好ましくは0.01ＭＰａ以下になるようにするのがよい。一方、間隔があまり大きすぎると加熱効率が悪くなるので間隔の上限は0.2ｍｍ程度まで、好ましくは0.1ｍｍ程度までとするのがよい。そのために、加熱体を移動させてベルトとの間隔を調整できる機構を設けることが好ましい。
　ダイロール圧着部は、圧着ベルト搬送加熱部で所定部を加熱されたヒートシール材料を圧着して複合ヒートシール構造を形成するところで、線条ロールと弾性体ロールよりなる。
　線条ロールは、剛性のロールで、ステンレススチール、真鍮等の金属、セラミックス、ポリ四フッ化エチレンやＤＬＣのコート等で形成される。
　直径は４０～１００ｍｍ程度で、弾性体ロールと接する面の幅は、帯状の剥がれシールの幅である。線条突起の位置と高さと幅は、形成する線条シールに一致させる。
　線条ロールに加熱機構を設けてもよいが、ヒートシール材料と接する時間は材料の熱応答より短いのであまり効果がない。連続運転によって余熱で温度上昇を起こしても好ましい方向である。
　弾性体ロールは、全体に弾性体で形成されていてもよいが、通常のロールの周面に弾性体シートを被着させたものでよい。弾性体の材料は、必要な弾性があり、ヒートシール温度に耐えるものであればよいが、例えばシリコンゴムを使用することができる。例えば、厚さが３～５ｍｍで硬さがＡ５０～Ａ８０程度のものが好ましい。
　弾性体ロールの径は、連続運転による弾性体の消耗を考え通常４０～１００ｍｍ程度であり、幅は線条ロールと圧接する両端よりいずれも２ｍｍ以上の余裕があるようにするのがよい。
　線条ロールと弾性体ロールは、少なくともヒートシール材料の厚さの変化と圧着圧による弾性体の圧縮変形代の合計寸法に対応する上下運動ができるよう少なくとも一方を必要荷重下で自由移動ができる構造にする。また、所定の定圧着圧に調整できるようにする。
　また、圧着ベルト搬送加熱部から搬送されてくるヒートシール材料の搬送速度に一致するよう、線条ロールおよび弾性体ロールの双方を同一回転数で駆動させる。
　ダイロールの円周速さは搬送ベルト速さに正確に一致させる必要があるので、
ベルトとダイロールの駆動源と同一にしたり、回転数の電気制御を用いる。
　ところで、本発明者は、この圧着ベルト搬送加熱部と線条ロール圧着部との間の搬送で温度が低下し、これがヒートシールの際に問題になりうることを見出した。すなわち、本発明では、ベルト搬送加熱部から線条ロール圧着部へ受け渡しは空間を通して行われる。そこで、この間のヒートシール材料の温度低下の計測結果は図７に示した。
　所期の密封を確実に達成するには、加熱部の溶着面温度設定に対して２℃以内の低下に抑える必要があるが、室温の露出状態の温度低下は0.4ｓ／2℃、ベルト温度で保温した場合には1.1ｓ／2℃であり、保温で防御すれば、本発明のヒートシールを確実に実施できることが分かった。（図７参照）
　ヒートシール材料の排出速さは搬送加熱部の加熱設定条件で変動する。ダイロール圧着ロール径と駆動ロール３１の受け渡し寸法（保温間隔）の通過時間を試算した結果を表１に示した。ダイロール径の50mmΦを例にして、通過時間を診る。
　ベルト速さ10m／min.では0.6ｓ、6m／min.で1.0ｓであり、5m／min.で1.6ｓである。いずれも露出移送では、溶着面温度応答が適正範囲を超えるので、分離したダイロールでの接着完成が困難であることが分った。表１のベルト速さとロール径の組み合わせの1.0ｓを目安の太線で区分けした。ベルト速さとロール径の常用の適用範囲では、加熱機能を有する能動的保温が必要である。
　発熱源に結合した保温板を設けた。保温板のギャップはヒートシール材料の移動を拘束しないように2～5mmにした。保温板の加熱温度は搬送加熱部の溶着面温度に対して５℃程度高めに設定すればよく精密な温度調節は必要としない。
　保温板の構成によって、低速の運転条件でも一条密封と平面圧着が確実に達成できるようになった。
　このような装置を用いた複合構造のヒートシールは、ヒートシール材料を圧着ベルト搬送加熱部で適正温度になるように加熱して、ダイロール圧着部で適正な圧着をすることによって行なう。
　この加熱条件は、ヒートシール材料、加熱体の温度と長さ、搬送速度によって異なる。
Figure JPOXMLDOC01-appb-T000002
　ヒートシール材料の溶着面温度応答を参照して、加熱体の長さ、ベルト速さの組み合わせを選択して、加熱時間を次式で決定している。
　・加熱体の長さ：L（m）、・ベルトの搬送速さ：V（m/s）、
　・必要な加熱時間：ｔ（s）（“MTMS”キットを利用して計測）とすると
Figure JPOXMLDOC01-appb-M000003
 となる。この時間がベルト材とヒートシール材料の統合の溶着面温度応答から設定される応答時間より大きいことが必要である。
　加熱体とベルト間の熱移動がヒートジョー方式と同等（摺動中の加熱が）に行われれば、バンドシーラーの加熱メカニズムはヒートジョー方式の理論と同等に展開できる。
　溶着面温度応答は加熱体表面温度をパラメータにして計測できる。そのモデルを図８に示した。
　溶着面温度応答は、最終的には加熱体表面温度に漸近する。しかし到達点は漸近線になるので、実用的には定義しにくい。
　そこで発明者は95％値の到達時間を採用して、CUT(Come Up Time)を定義している。
　・溶着面温度応答の到達温度（平衡温度）；Ｔe
　・始発温度（室温）；Ｔr
　とすると
Figure JPOXMLDOC01-appb-M000004
　“MTMS”キットの溶着面温度応答データからＴ95の到達温度の時間を読み取り、CUTを得ることができる。
　Ｔr; 20℃、Ｔe；120℃、150℃を例にして、Ｔ95を試算すると115℃、143.5℃が得られる。CUTと平衡温度との差は5℃、6.5℃となる。
　熱接着（ヒートシール）を実行する場合には、図８のような応答特性を参照して、加熱体表面温度を目標温度より少し高い（2～3℃）に近いＴ1を選択する。あるいはＴ2、Ｔ3のように遥かな高温を選択して、Ｔ1の通過時点の時間制御で加熱温度を決定する。
　溶着面温度応答をＴ1付近を選べば必要な溶着面温度に対する余裕時間は大きい特長がある。しかし、高温側の過渡温度加熱では、加熱時間は短くなるが、適正時間範囲が非常に小さくなるので、高度の時間制御を必要とし、仕上がりが不安定になる短所がある。
　加熱体の長さ、ベルトの速さ、摺動ベルトとワークの熱伝達応答特性の3点の統合によって、製品１個当たりの加熱時間が決まる。加熱体の長さとベルトの速さから決まる加熱時間の関係を表２に示した。
　ここで示した各通過（加熱）時間は、上記で示したベルトとヒートシール材料の熱伝達応答と対比して設計条件と運転条件を決める。
　加熱体の長さは製作時に決定されるので、運転状態での選択はできない。
　200mmの例では、加熱体、0.25mmのポリ四フッ化エチレンベルトを使い、微圧接に調整して、3.0ｓの加熱時間が確保できた場合、最速のベルト速さ（速さの上限）は4ｍ／min.となる。これ以上の高速化は加熱条件が不安定になる過渡加熱条件になる。
Figure JPOXMLDOC01-appb-T000005
　非接触のステンレスシート方式を適用した場合、加熱時間は1ｓが適用できるので、各加熱体の長さにおいて、100mmでは6ｍ／min.に拡張される。200～400mmでは、8m／min.以上の高速化が可能になる。
　本発明の加熱と圧着機能の分離による摺動ベルトの非接触化対応の優位性を証明できた。低速域では、保温板４１が設置され、ヒートシール材料の温度低下対策が施されていれば問題はない。
　また、ダイロール圧着部での圧着圧もヒートシール材料と加熱温度（軟化特性）によって異なる。
　屈曲部の塑性変形の密封化は材料毎によって変わる。発明者が開発した図９に示した試験法で屈曲部の密封応力を計測する。
　高さ0.5mmの半円弧の一条突起を付した加熱バーの温度Ｔ℃を順次上昇して、圧着強さを変更して、密封が可能な組み合わせの計測をする。
　計測結果を圧着バーの一条突起の長さ１cm当たりの線荷重に変換して、計測結果の標準化を図る。
　試験標本を折り重ねて二つの屈曲部を構成し、内側に約10μmのLLDPEのフイルムを試験標本に密接して挟み込む。表面温度をＴ℃に加熱して、圧接荷重を可変する。仕上がった標本の屈曲部に探傷液を点滴し、本発明者が開発した評価法を適用して、密封性をルーペ又は顕微鏡を使用して、目視検査する。
　市場に出回っている包装材料で、硬くて、最も密封が困難なOPP（二軸延伸ポリプロピレン；ヤング率　約2,000）を標本にした試験結果を表３にまとめた。（特許文献３の適用事例）
Figure JPOXMLDOC01-appb-T000006
　各加熱温度（加熱体表面温度）に26～120Ｎ／cmの線荷重を付与した。
　この結果を見ると、軟化が発生しない110℃で高圧接荷重を掛けると圧接部位は白濁して、ボロボロなってしまい、軟化温度帯外での密封は困難であることが分った。
　軟化の始まる114℃では83Ｎ／cmの線荷重を必要とした。
　更に温度を上げると116℃から42N／cmとなり、実用的な荷重で密封が完成できた。この材料は2軸延伸が掛かっているので溶融温度に加熱が接近するとシュリンクが起こるので、上限適用温度は140℃付近になる。
　密封のみの目的なら116－140℃未満が適用対象温度域になることが分った。
　本発明の一実施例であるヒートシール装置の概略構造の側面図を図１０に、そのダイロール圧着部の正面図を図１１に示す。
　圧着ベルト搬送加熱部３は、ロール３１、３２間に掛架されていて走行する厚さ０．０４ｍｍのステンレススチールの一対のベルト３３と、それぞれ該ベルト３３、０．１ｍｍの間隔をおいて配置された加熱体３４よりなっている。
　200mmの例では、加熱体、0.25mmのポリ四フッ化エチレンベルトを使い、微圧接に調整して、3.0ｓの加熱時間が確保できた場合、最速のベルト速さ（速さの上限）は4ｍ／min.となる。これ以上の高速化は加熱条件が不安定になる過渡加熱条件になる。
　図１０の左側のロール３１はいずれも駆動ロールで、右側のロール３２は従動ロールになっており、対向する駆動ロール３１と従動ロール３２は間隔を調整してヒートシール材料であるワーク１の圧接圧を変えられるようになっている。また、駆動ロール３１は、回転速度を変えてワーク１の搬送速度を変えられるようになっている。
　加熱体３４は、いずれも、長さが２００ｍｍの直方体をしていて、内部にヒーター３４１が埋設され、ベルト面側にはさらにヒートシールパイプ３４２と加熱体表面温度を測定するセンサ３４３が埋設されている。
　この加熱体３４はいずれもベルト３３との間隔を調整できるようになっている。
　ダイロール圧着部２は、周面に高さが０．３ｍｍで断面が半円状の一条突起２１１が周方向に設けられた線条ロール２１と弾性体ロール２２よりなっている。弾性体ロール２２は幅が２５ｍｍで、通常のロールの上に厚さが４ｍｍで硬さがＡ７０のシリコンゴム弾性体２２１のシートが被着された構造になっている。
　線条ロール２１は、幅２０ｍｍ直径５０ｍｍφで、図１１に示すように、回転軸に圧着圧調製スプリング２３が取り付けられ、これにより線条ロール２１をバネ圧力の付加で圧着圧を調整できるようになっている。
　加圧装置にエアーシリンダを適用すれば、空気圧の調整で容易に圧着荷重の調整ができる。更に定圧着下で自動上下運動が可能となる。
又運転待機時に弾性体ロール２２への荷重を容易に開放でき、弾性体の損耗を軽減できる。
　線条ロール２１と弾性体ロール２２は歯車を歯合させて同期回転させる。駆動源は電気的に微調整できるモータを適用し、ワークの進入速さに一致させた。
　圧着ベルト搬送加熱部３とダイロール圧着部２の間には、その間の移送におけるワーク１の温度低下を避けるための保温部４が設けられている。
　この保温部４は、断面を図１２に示すように、平行に配置された上下２枚の保温板４１の右辺が、ヒーター４２１を内蔵した加熱体４２に固定され、外面が保温材４３で覆われた構造をしている。
　このような装置を用いてヒートシールを行なうには、まず、図１０の図面の右側からワーク１が矢印点線に従ってロール３２、３２間から搬入される。そして、一対のベルト３３、３３に挟持されて搬送されている間に加熱体３４、３４によって上下方向から加熱され、ヒートシール層が軟化して界面接着状態にする。
　次いで、ロール３１、３１間から放出され、保温板４１で保温されてダイロール圧着部２に送られる。そこでは、線条ロール２１と弾性体ロール２２によって、先ず一条突起２１１でワークの線条局部が弾性体２２１内に陥没して、一条密封が形成されるとともに、平面部の圧着に移行する。４枚部と２枚部の平面段差相当部分が弾性体の流動的変形で２枚部を圧着する。
　特許文献３を適用したヒートシール材料として厚さ２５μｍのＯＰＰと３０μｍの凝集破壊シーラントの積層シートを用いた。
　これを圧着ベルト搬送加熱部で加熱体表面温度１２３℃、搬送速度４ｍ／分で３秒加熱して、その１．５秒後に保温板を出たヒートシール材料をダイロール圧着部で40Ｎ／ｃｍの圧着圧で（ダイロール圧着線荷重４０Ｎ）で複合ヒートシール構造の圧着を行なった。線条変形で分割圧着するので、包装袋のヒートシール寸法に関係なく、材料の密封圧着特性値のみの適用で済むところが本発明の特長である。
　ヒートシールは、帯状部の幅の合計が１５ｍｍ、線条部の幅が０．３ｍｍで、約８Ｎで摘み開封ができる剥がれシールであった。内側のヒートシール線に探傷液を点滴し、段差部を含めヒートシール面全体の一条シール線上の密封の完成を確認した。その状態の写真を図１３に示す。
　本発明のヒートシール装置とヒートシール方法は、ピロー袋やガセット袋のようなヒートシール面異段差があっても効率よく密封できるので、包装袋等のヒートシールに幅広く利用できる。
　１　ヒートシール材料（ワーク）
　２　ダイロール圧着部
　　２１　線条ロール
　　　２１１　一条突起
　　２２　弾性体ロール
　　　２２１　弾性体
　　２３　圧着圧調製スプリング
　３　圧着ベルト搬送加熱部
　　３１　駆動ロール
　　３２　従動ロール
　　３３　ベルト
　　３４　加熱体
　　　３４１　ヒーター
　　　３４２　ヒートパイプ
　　　３４３　加熱体表面温度センサ
　４　保温部
　　４１　保温板
　　４２　加熱体
　　　４２１　ヒーター
　　４３　保温材
　５　ヒートジョー式ヒートシーラー
　　５１　加熱体
　　　５１１　ヒーター
　　　５１２　ヒートパイプ
　　　５１３　温度調節センサ
　　　５１４　加熱体表面温度
　　５２　カバー材
　　５３　間欠動作
　６　バンドシーラー
　　６１　駆動ロール
　　６２　摺動ベルト
　　６３　加熱体
　　　６３１　ヒーター
　　　６３２　ヒートパイプ
　　　６３３　温度調節センサ
　　　６３４　加熱体表面温度
　７　溶着面温度

Claims (4)

  1. 　ロール間に掛架されて走行する一対のベルトと該ベルトと間隔をおいて配置された加熱体から構成され、ヒートシール材料を搬送加熱して帯状の剥がれシールを形成する圧着ベルト搬送加熱部と、
    　周面に線条突起が周方向に設けられた線条ロールと弾性体ロールから構成され、該帯状の剥がれシールの長尺方向に線状の剥がれシールを付加するダイロール圧着部よりなる、
    　帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合ヒートシール構造を形成するヒートシール装置
  2. 　圧着ベルト搬送加熱部とダイロール圧着部の間に保温部が設けられている請求項１記載のヒートシール装置
  3. 　ベルトが金属ベルトである請求項１又は２記載のヒートシール装置
  4. 　ヒートシール材料を、一対のベルトで挟んで搬送し、その間に加熱して剥がれシールで帯状のヒートシールを形成し、次いで、該帯状のヒートシール部を表面の周方向に線条突起が設けられた線条ロールと弾性体ロールの間を通過させて該帯状のヒートシール部に線条の剥がれシールを付加するとともに該帯状のヒートシール部もさらに剥がれシールでヒートシールすることを特徴とする複合ヒートシール構造のヒートシール方法
PCT/JP2018/001490 2017-06-09 2018-01-19 複合ヒートシール構造を形成するヒートシール装置と方法 WO2018225290A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/705,242 US11279094B2 (en) 2017-06-09 2019-12-06 Heat-sealing apparatus and method for forming composite heat seal structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-114175 2017-06-09
JP2017114175A JP6257828B1 (ja) 2017-06-09 2017-06-09 複合ヒートシール構造を形成するヒートシール装置と方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/705,242 Continuation US11279094B2 (en) 2017-06-09 2019-12-06 Heat-sealing apparatus and method for forming composite heat seal structure

Publications (1)

Publication Number Publication Date
WO2018225290A1 true WO2018225290A1 (ja) 2018-12-13

Family

ID=60940228

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/001490 WO2018225290A1 (ja) 2017-06-09 2018-01-19 複合ヒートシール構造を形成するヒートシール装置と方法

Country Status (3)

Country Link
US (1) US11279094B2 (ja)
JP (1) JP6257828B1 (ja)
WO (1) WO2018225290A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3812287A4 (en) * 2019-07-10 2022-03-23 Hishinuma, Kazuo HEAT SEALERS WITH INTERFACE TEMPERATURE SENSOR

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102599928B1 (ko) * 2021-06-14 2023-11-08 문용준 적층세라믹 축전기(mlcc) 포장용 비닐테이프 실링장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1053224A (ja) * 1996-08-06 1998-02-24 Seal Kogyo Kk エンドレスバンド形封緘機
EP1027981A2 (de) * 1999-02-11 2000-08-16 KALLFASS VERPACKUNGSMASCHINEN GmbH & Co. Verschweisseinrichtung für verschweissbare Folien
JP3465741B2 (ja) * 1998-09-21 2003-11-10 一夫 菱沼 プラスチックのヒートシール条件の決定方法
JP5779291B1 (ja) * 2014-08-22 2015-09-16 一夫 菱沼 重ね部段差に適応しうる複合ヒートシール構造
JP6032450B1 (ja) * 2015-12-25 2016-11-30 一夫 菱沼 基材におけるシーラントの層の選定方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697773A (en) * 1951-08-16 1954-12-21 Bert H Wallace Dielectric heating conveyer apparatus
US2743761A (en) * 1953-10-20 1956-05-01 Goodyear Tire & Rubber Heat sealer
US3326735A (en) * 1964-11-30 1967-06-20 Phillips Petroleum Co Continuous sealing of biaxial oriented film
JPH07501029A (ja) * 1991-07-02 1995-02-02 ウェルドトロン　オブ　デラウェア，インコーポレイテッド 封着と包装方法及びその装置
JP3811145B2 (ja) 2003-06-20 2006-08-16 一夫 菱沼 ヒートシール巾の決定方法
JP4623662B2 (ja) 2006-05-26 2011-02-02 一夫 菱沼 ヒートシール装置の温度調節方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1053224A (ja) * 1996-08-06 1998-02-24 Seal Kogyo Kk エンドレスバンド形封緘機
JP3465741B2 (ja) * 1998-09-21 2003-11-10 一夫 菱沼 プラスチックのヒートシール条件の決定方法
EP1027981A2 (de) * 1999-02-11 2000-08-16 KALLFASS VERPACKUNGSMASCHINEN GmbH & Co. Verschweisseinrichtung für verschweissbare Folien
JP5779291B1 (ja) * 2014-08-22 2015-09-16 一夫 菱沼 重ね部段差に適応しうる複合ヒートシール構造
JP6032450B1 (ja) * 2015-12-25 2016-11-30 一夫 菱沼 基材におけるシーラントの層の選定方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3812287A4 (en) * 2019-07-10 2022-03-23 Hishinuma, Kazuo HEAT SEALERS WITH INTERFACE TEMPERATURE SENSOR
US11577474B2 (en) 2019-07-10 2023-02-14 Kazuo Hishinuma Heat sealer provided with interfacial temperature sensor

Also Published As

Publication number Publication date
JP2018203370A (ja) 2018-12-27
US20200108566A1 (en) 2020-04-09
JP6257828B1 (ja) 2018-01-10
US11279094B2 (en) 2022-03-22

Similar Documents

Publication Publication Date Title
US3166462A (en) Method and apparatus for heat sealing packages
CN106458345B (zh) 适应于重叠部台阶的复合热封构造
KR101961574B1 (ko) 충전 포장기
US2469972A (en) Machine for welding thermoplastic films
AU2013264214B2 (en) Plastic-film-heat-sealing device
WO2018225290A1 (ja) 複合ヒートシール構造を形成するヒートシール装置と方法
JP4616287B2 (ja) 剥がれと破れシール混成ヒートシール方法
EP3812287B1 (en) Heat sealer provided with interface temperature sensor
JP7190480B2 (ja) 縁部が密閉されたパウチを製造するための装置及び方法
JP2013210295A (ja) 接着強度評価方法および評価装置
US4735675A (en) Heating device for sealing material to effect different bond strengths
MX2014015866A (es) Metodo para envolver una cabeza de paleta entre dos peliculas.
EP0883546B1 (en) Sealing apparatus
JP6632103B1 (ja) バンドシーラの摺動加熱部ギャップの自動調節構造
US11485103B2 (en) Method and apparatus for manufacturing pouches
JP2015151137A (ja) ヒートシール装置および被シール体の製造方法
JP5035977B2 (ja) ベルトシーラーおよび混成ヒートシール方法
WO2013177773A1 (en) Non-contact heat corner seal apparatus and methods of use thereof
WO2024057682A1 (ja) 帯状の剥がれシールの長尺方向に線条の剥がれシールが付加された複合ヒートシール構造を形成するヒートシール装置
JP3643800B2 (ja) シール方法及びシール装置
JP5656450B2 (ja) 包装充填装置
TW383286B (en) Sealing apparatus and method for sealing
JP2002120306A (ja) 溶封装置
JP2004359435A (ja) 粘着テープ貼り付け装置及び貼り付け方法
JPH08113220A (ja) ストレッチ包装体の開梱機用切断ユニット

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18813260

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18813260

Country of ref document: EP

Kind code of ref document: A1