TW200938368A - Bag machine and winder - Google Patents

Bag machine and winder Download PDF

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Publication number
TW200938368A
TW200938368A TW97142969A TW97142969A TW200938368A TW 200938368 A TW200938368 A TW 200938368A TW 97142969 A TW97142969 A TW 97142969A TW 97142969 A TW97142969 A TW 97142969A TW 200938368 A TW200938368 A TW 200938368A
Authority
TW
Taiwan
Prior art keywords
sheet
heating wire
making machine
zone
seal
Prior art date
Application number
TW97142969A
Other languages
English (en)
Other versions
TWI488732B (zh
Inventor
Paul A Selle
Gregory T Prellwitz
Original Assignee
Cmd Corp
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
Priority claimed from US11/937,870 external-priority patent/US20080093018A1/en
Priority claimed from US12/145,913 external-priority patent/US20080300121A1/en
Application filed by Cmd Corp filed Critical Cmd Corp
Publication of TW200938368A publication Critical patent/TW200938368A/zh
Application granted granted Critical
Publication of TWI488732B publication Critical patent/TWI488732B/zh

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7433Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a wire
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/10Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting using heated wires or cutters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007Forming single grooves or ribs, e.g. tear lines, weak spots
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/226Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip characterised by the cross-section of said heated wire, resistive ribbon, resistive band or resistive strip, e.g. being triangular
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining 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
    • B29C65/30Electrical means
    • B29C65/305Electrical means involving the use of cartridge heaters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/38Impulse heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7437Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a perforating tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/004Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044Preventing 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/20Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/347General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/347General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3474General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients perpendicular to the plane of the joint
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General 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
    • B29C66/73General 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
    • B29C66/735General 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
    • B29C66/7352Thickness, e.g. very thin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/812General 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
    • B29C66/8122General 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/814General 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
    • B29C66/8145General 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
    • B29C66/81455General 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 being a fluid inflatable bag or bladder, a diaphragm or a vacuum bag for applying isostatic pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/816General 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
    • B29C66/8167Quick change joining tools or surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/818General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B29C66/81812General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws the welding jaws being cooled from the outside, e.g. by blowing a gas or spraying a liquid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824Actuating mechanisms
    • B29C66/8242Pneumatic or hydraulic drives
    • B29C66/82421Pneumatic or hydraulic drives using an inflatable element positioned between the joining tool and a backing-up part
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824Actuating mechanisms
    • B29C66/8244Actuating mechanisms magnetically driven
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Description

200938368 六、發明說明: 【發明所屬之技術領域】 本發明大體上關於袋子的製造技術。更特定言之,其 關於製袋機及一製袋方法,其由一薄膜或薄片製造出袋 5 子,且形成使藉由該薄片製成之相鄰袋子分離的密封處和 穿孔處或一減弱線。 本發明是2008年7月2日申請、發明名稱為、、Method φ and Apparatus For Making Bags"之美國專利申請案第 12/159,979號的部分接續申請案並主張其權利,該 1〇 12/159,979號案主張2007年1月12日申請、發明名稱為 ''Method and Apparatus For Making Bags夕之 PCT 申請案第 PCT/US07/00981號的優先權和權利;且本發明是2008年6 月25日申請、發明名稱為、、Method and Apparatus For Making Skirtless Seals"之美國專利申請案第 12/145,913 號 15 的部分接續申請案並主張其權利,該12/145,913號案是 ❹ 2007年11月9日申请、發明名稱為、、Method and Apparatus
For Making Skirtless Seals” 之美國專利申請案第 11/937,870 號的部分接續申請案並主張其權利,該U/937,87〇號案是 2006年1月13曰申請、發明名稱為’Method and Apparatus 20 For Making Bags"之美國專利申請案第11/331,466號(已 在2008年11月11日授證為美國專利第7,445,59〇號)的 部分接續申請案並主張其權利。 【先前技術】 200938368 頃有許多已知的製袋機。有一種款式是滚筒式機器。 滚筒式機器廣為人知且其詳細說明可參見美國專利第 6,117,058 號、4,934,993 號、5,518,559 號、5,587,032 號及 4,642,084號(每一者均以引用的方式併入本文中)。 旋轉式製袋機之操作的詳細說明可從上列專利找到, 但其共通操作方式可參照圖丨看到。一習知旋轉式製袋機 100利用一浮動輥總成203、一對送往滚筒的輥205和206 (203_206是一輸入段的局部)、一封合滚筒2〇8、一對送❹ 離滾筒的輥210和211、一封合襯件213、一對送往裁切刀 的輥215和216、一裁切刀218 (其可為任何其他薄片處理 裝置’譬如穿孔器、刀具、刀模、衝壓站、或折疊站)、一 對送離裁切刀的輥219和220 (210-220是一輸出段的局 部)、及一控制器221。此處所述之輸入段係包含一製袋機 接收薄片的部分,譬如一退繞總成和一浮動輥總成。此處 所述之輸出段係包含在形成密封之處的下游作用於一薄片 上的總成,譬如穿孔器、捲繞器、折疊器等。 〇 該薄片經由浮動輥總成203送到滾筒208。滚筒208 包含複數個封合棒209。該等封合棒經加熱且自薄片201 製造成密封處而形成袋子。薄片201被一 Teflon®塗層襯件 抵住滾筒208 (及封合棒)固持。由該滾筒造成之密封的間 距與袋長(頭尾相接的袋子)或袋寬(由侧邊密封形成的 袋子)有關。頭尾相接的袋子由滚筒形成一處密封,且並 排的袋子係被形成有一對密封。滾筒直徑可經調整及/或小 4 200938368 於所有封合棒以決定密封間距,且因此決定袋子大小。 ,+圖1習知技藝規定薄片201在離開滾筒2〇8之後被導 往旋轉的裁切刀2!8,其會產生袋子之間的穿孔處,或者可 分開鄰接的袋子。當袋子是頭尾相接的袋子時,穿孔處被 5 定位在單—密封處附近,致使當袋子被分開時,穿孔處及 ^孔末端是一袋子的頂部,且就末端密封型來說,密封處 疋鄰接的袋子的底部,而就侧邊密封型來說,是相鄰袋子 。理想中,穿孔處係鄰近於密封處以減少浪費,但 這在實務上很難。當袋子係並排形成時,穿孔處係被製造 1〇 在岔封對之間。在穿孔處之兩侧上均需要一密封,因為兩 個袋子的側邊都應當要密封。介於密封對之間的薄片被浪 費。因此,密封對應當彼此靠近以減少浪費,但這在實務 上也很難。 控制器221連接到各組件以控制速度、位置等。可利 〇 用感測器感知薄片上的印記以形成密封及/或使穿孔處對正 街封處(使前者相對於後者在正確位置又,感測器可偵 測密封處以嘗試在正確位置製造出穿孔處。經證明要感知 後、封處會有困難。一種會感知密封處之系統的習知實例見 於美國專利第6,792,807號,該專利之完整内容以引用的方 气併入本文中。右穿孔處被定位成太靠近一侧密封,則該 您封可能被切掉,使得袋子不能用。 由於感知密封處有困難,在製袋時會產生廢料,或者 5 200938368 是袋子不能用。浪費的薄片(亦即—密封處與相鄰穿孔處 片)或是用來製造出不能用的袋子的薄片可能相 當印貴’尤其是每小時之袋子產量相當大的高速製袋機。 ^知機器的另一問題是穿孔處可能相對於密封處歪 5 掉因為穿孔處是在下游製造出,且薄片可能偏離路線或 拉長。又’機械式穿孔刀必須每隔幾天調整—次以持續正 確運作。—般而言,銳利的機械刀無法藉由調整來改變穿 孔強度’且其可能昂貴、複雜、及難以使用。 其他類型的製袋機,譬如間歇運動型機器(非滚筒型 10 機器)’採用燒斷式密封方式同時進行封合及切割或穿孔, 但因往復運動、停頓時間、及難以應付鬆脫袋子等因素而 使速度偈限在約300 fpm。其他間歇運動型機器,譬如CMD Icon ,擁有具備一整合有齒刀刃的封合棒。c;MD CM300™ 機器具有擺盪運動以移動具有一整合有齒刀刃的封合棒。 15 一般而言’間歇運動型機器不如滾筒式連續機器快,且因 此每工作小時產出很少袋子。 有些習知滾筒式製袋機在薄膜隨滚筒移動時製造出二 個平行农封及其間之一穿孔處。舉例來說,授證給Bohn等 人的第6,635,139號專利及Selle等人之習知相關申請案us 20 2007·0167304(其在2008年11月4日已授證為美國專利第 7,445,590號)’該等專利之完整内容以引用的方式併入本文 中〇 200938368 據此,希冀有一種能夠增強將穿孔處定位為靠近密封 處之能力的製袋方法及製袋機。較佳來說,這可在沒有一 下游刀具的條件下達成,藉此避免與下游刀具有關的問 題。又,這較佳是在一連續運動型機器上達成,藉此避免 5 與間歇型機器有關的缓慢和難處。 【發明内容】 依據本發明之一第一面向,一種製袋機包含一輸入 ❹ 段、一滾筒、及一輸出段,其中一薄片從該輸入段行進至 該滚筒到該輸出段。該滚筒包含至少一封合棒,其有一形 10 成單一密封的單一封合區,且更在該第一封合區内包含一 •弱化區,其在該單一密封内形成一減弱區。 依據本發明之一第二面向,一袋子的製造方法為接收 一薄片,利用一滚筒上之一封合棒在該薄片上形成一單一 密封,且在該單一密封内形成一減弱區。該減弱區係在該 15 第一密封形成期間之至少一部分時間中形成。 依據本發明之一第三面向,一種用於一旋轉式製袋機 的穿孔器係一用於一滾筒的嵌件,包含一單一封合區及一 在該單一封合區内的弱化區。其可或不可被改造裝到既有 機器上。 20 依據本發明之另一面向,一種製袋機包含一輸入段、 一滾筒、及一經配置用以從該滾筒接收薄片的輸出段。該 滾筒具有至少一封合棒,其包含一形成一單一密封的封合 7 200938368 區及-加熱絲,該加熱絲係該封合區内之一弱化區用於 在該单-密封内形成一減弱區。在該至少一封合區之至少 一部分上有一釋玫層。 依據各實施例,該弱化區係一加熱穿孔器,及/或包含 5 一加熱絲,及/或一薄膜加熱器。 該加熱絲有一電源與其連接,該電源係處於一可調電 壓或強度及/或脈衝式,及/或在其他實施例中提供一反饋迴 路。 在各實施例中’該加熱絲係一鎳鉻(NiCr)電阻絲、 10 較佳係約80%鎳及約20%鉻’及/或是一薄膜加熱器及/或 一電阻式加熱器,及/或經配置與該薄片間歇接觸,及/或有 一約4歐姆/英尺的電阻,及/或設置在該封合棒上一嵌件及 /或S盒内。 該嵌件係由Muscovite®雲母、phl〇g〇pite®雲母、 15 Glastherm®複合物、或類似的電絕緣材料構成,及/或在其 他實施例中有複數個孔沿著橫越方向中之一直線設置。 在各實施例中’該單一密封在機器方向中延伸至多 0.125英吋、0.25英吋或至多0.75英吋。 在各實施例中’該弱化區經配置用以產生一強度變動 2〇 的減弱線,及/或是一分離區’及/或包含一熱薄膜,及/或 包含一有齒刀刃,及/或包含一排之針,及/或包含一指向該 200938368 薄片的空氣源,及/或包含一真空源。 依據另一實施例,該有齒刀刃係可縮回的。 在各實施例中,該第一封合區包含能夠製造出侧密封 和帶密封的複數個獨立受控溫度區,及/或包含依橫越機器 5 方向延伸的至少二個平行密封子區,且該穿孔區係設置在 該至少二個平行密封子區之間。 ❹ 在各實施例中,該單一封合區包含能夠製造出侧密封 和帶密封的複數個獨立受控溫度區,及/或包含具備複數個 加熱區的匡式加熱器,及/或包含一經配置用以冷卻該單一 10 封合區之至少一部分的空氣源,及/或包含用於將受熱空氣 導往該薄片的至少一埠,及/或包含超音波能量源、微波能 量源或輻射熱源之至少一者。 在其他實施例中,一封合襯件經配置用以將該薄片抵 Ο 住該滾筒固持,且可由具有一接觸該薄片之聚矽氧層的聚 15 酯材料製成。 在另一實施例中,該滾筒有一可調直徑。 在各實施例中,該減弱區形成所用時間少於該第一密 封,且形成所用時間係約該第一密封的一半。 在其他實施例中,形成一減弱區包含形成一致的減弱 20 線,及/或形成一穿孔處,及/或形成一強度變動的減弱線, 9 200938368 及/或分離鄰接的袋子,及/或向該薄片施予一真空,及/或 在該薄片導以空氣。 在各實施例中,形成一穿孔處包含加熱一金屬絲及/或 電阻式加熱器及/或熱薄膜,及/或用一在形成穿孔處後可或 5 不可回縮之有齒刀刃碰觸該薄片,及/或用一排之針碰觸該 薄片,及/或在該穿孔處附近形成一辅助密封。 該金屬絲有一以一可調電壓供應的電力,及/或在其他 實施例中為脈衝式。 在各實施例中,一代表該金屬絲之熱的信號受監測且 10 所施加電力回應於此而受控。 在各實施例中,該單一密封在機器方向中延伸至多 0.125英对、0.25英忖或至多0.75英叶。 在另一實施例中’形成一單一密封包含將至少二個平 行密封子區帶到與該薄片熱接觸,且形成減弱區包含將一 15 設置在該等平行密封子區之間的弱化區帶到與該薄片熱接 觸0 在各實施例中,該單一密封具有複數個獨立受控的溫 度區,及/或利用超音波能量、微波能量及/或輻射熱被冷卻 及/或形成。 20 依據其他實施例,該封合區係由一加熱絲、一電絕緣 200938368 5 Ο 10 ❹ 15 20 層/釋放層、一 glastherm (隔熱件品牌系列)或雲母層、及 一鋁塊依序構成,其中該加熱絲和電絕緣層/釋放層與薄膜 發生接觸。 ' 在各實施例中’該釋放層可由諸如kapton®及/或 teflon®帶的材料構成,且該加熱絲被縫到該封合區内,及/ 或一材料被設置在該加熱絲底下。 在其他實施例中’封合區表面可為一帽蓋及/或具有一 碰觸該薄膜之拱形形狀。 在一實施例中,該封合區及/或弱化區包含一提帶區, 在該提帶區中該釋放層相對於該封合區之剩餘部分被 高。 ° 在一實施例_,該封合區可為一鋁塊加熱器。 在一實施例十,該加熱絲係安裝在該鋁塊加熱器内該 複數個孔之間。 〃 。依據其他實施例,該封合區係由一雙面膠帶、一加熱 器、一導熱層、一金屬絲及一釋放層依序構成,其中該^ 放層與該薄膜發生接觸。 热習此技藝者將在閱覽下述圖式、詳細說明及隨附申 請專利·狀後’日树本發明之其他主要特徵和優點。 【實施方式】 11 200938368 路解釋本發明之至少一實施例之前’應理解到本 發:不侷限於在下文或圖式中敘述或繪出之組件 U置的細節。本發明可有其他實施例或是以各種 靶或實仃。又’應理解到文中所用措辭和術語 5 10 15 糸二說月而用’不應將其視為限制。本說明書肋同參考 數字標不相同組件。 儘管以下將參照-特定製袋機例示本發明,從一開始 就應理解縣發明亦可制在其他機器及㈣其他組件。〇 在本文中,製袋機一辭包含製造諸如有提帶的袋子、無提 帶的袋子及其他袋子的機器。任何輸入段(例如退繞總成 和浮動輥)及任何輸出段(例如捲繞器、折疊器)可搭配 本發明使用。袋子可由傳統聚合材料或其他材料(譬如澱 粉、聚乳酸(PLA)、纖維素、多羥基鏈烷酸酯類(PHA)、 木質素)及/或可生物分解、可堆肥之類的材料(譬如 Master_Bi®、Ecoflex®、Ecovio®、Bioplast GF106®)等材 料構成。 〇 大體而言,本發明提出一種旋轉式製袋機’其具備一 輸入段、一滾筒段及一輸出段。當薄膜隨該滚筒移動時, 會形成單一密封,且會在該單一密封内形成一穿孔處或減 弱線。因此内有穿孔處的該單一密封會形成兩相鄰袋子的 密封處。 較佳來說,該單一密封係利用單一封合區製造出。另 12 20 200938368 或3用處密封炫化形成單-密封 係由二個平行密。在任-情況中,該單-密封 或減弱區^封子構成,在料—㈣时—穿孔處 實施例結合’,、:==封技術。該單-密封可與其他 孔處等。*如摺邊或提帶密封、強度變動的密封和穿 ❹ 15 20 該等密封和穿孔處之开< 成 筒的時i舉例來說,在所用時間可少於薄膜環繞滚 接觸的時时轻滾筒㈣的2式製域上’薄片與滾筒 期的四分之—中形成。封^ ’且穿減係在滾筒週 時施予熱,從⑽成該單1^含—封合區且在滾筒旋轉 書中,封合棒 滾筒上’其向薄片施加熱並予二:總成,譬如係在-旋轉 等。在本說明書中,封合區包人^ ;及安裝機構、穿孔器 在本說明書中,在封合區3封合棒製造出密封的部分。 在本說明書中,在單一密封内單-封合區之邊界。 ,說明書中,單-密封c-單-密封之邊界。 越機器方向延伸_大段距離:相之-_化形成依橫 域。單1封可能在該密料=封而無未封合部分的區 且可能有1多個子區。有畜意或意外產生的間隙, -側密:之:有獨立又控的蟥越機器溫度區,例如用於向 1邊或提帶部分施加更多熱。在本說明書 13 200938368 中’獨立受控溫度區包含沿一封合區可被控制或促成不同 溫度的溫度區。 二穿孔器或弱化區被安I在該單_封合區内,且可為 -帽蓋或嵌件的局部。該弱化區在密封形成時製造出一穿 孔處或減弱區。該穿孔處可利用熱、輕射或藉由機械接觸 製造出。在本說明書中,弱化區包含封合棒製造出一減弱 區的部分。在本說明書中,減弱區包含薄片上一譬如因一 穿孔處或薄片之一部分被熔化或燒掉而減弱的區域。 ❹ 另一選擇,該帽蓋可包含一用於分開鄰接袋子的分離 區,這通常需要比弱化或穿孔作業更多的熱。在本說明書 中,分離區係包含封合棒分開鄰接袋子的部分。一實施例 提出藉由將一帽蓋或嵌件放到既有封合棒或是藉由將封合 棒換成經設計有一弱化區(譬如具備一嵌件)之封合棒的方 式改造既有機器。 因此,穿孔處被一致且正確地定位在形成相鄰袋子之〇 側邊的單一密封内。因為側密封對之間距較小,故浪費的 薄膜較少。儘管習知製袋機在侧密封之間有一英忖,較佳 實施例製造出一約0.65英吋寬的單一密封,其為兩相鄰袋 子的密封。因此,每一袋子有一約0.325英吋的侧密封,在 密封與袋子邊緣之間沒有空間。在本說明書中,大約係包 含一足夠接近一給定值的量值,其足以大致如同該給定值 般發揮作用。 200938368 有非常多種穿孔器可使用,譬如加熱絲、熱薄膜、有 齒刀刃等。在本說明書中,熱薄膜係包含一用來向一指定 區域施加熱的薄膜。穿孔強度可經由控制在該穿孔器施加 之熱(或壓力)之量的方式調整。穿孔處可經清楚定義, 5 —減弱線或一強度變動的減弱線。在本說明書中,強度變 動的減弱線係包含沿一直線或曲線改變薄片強度,譬如一 穿孔處或一直線,在此處薄片未被移除,但在低和較高強 ^ 度區域之間交替。 加熱穿孔器可包含一與薄片間歇接觸的金屬絲,用以 10 造成穿孔圖案。在本說明書中,薄片與一封合或穿孔元件 之間的間歇接觸係包含薄片與該元件在一些地方接觸且在 其他地方不接觸,譬如沿一橫越機器方向線接觸與不接觸 交替。 在本說明書中,加熱穿孔器係包含一利用熱能經由接 15 觸、對流、傳導或輻射熱進行穿孔的裝置。在本說明書中, ❹ 加熱絲係一用來加熱的金屬絲,譬如藉由電流通過而加 熱。在本說明書中,輻射熱係包含呈電磁輻射、超音波輻 射、熱輻射等形式的熱。 襯件可為諸如見於習知技藝的襯件,然較佳實施例包 20 含一為無端皮帶的襯件,該皮帶係由雙重聚酯材料構成, 具有1/32”底層聚矽氧頂覆SilamK® (硬度55度)。在各實 施例中亦涵蓋其他襯件,較佳能夠應付在燒灼一穿孔處時 15 200938368 :^到,間歇高溫且具有良好釋放 5 件之妙表面中使用一細織二如=- ^例在襯 中有助於封合或穿孔並且改善釋放製作:薄膜 有藎英叶厚且具:二= 蕭氏A硬度5㈣度,初始地輯石粉乾燥。 〇 ^ 一實施例使用細織物紋路(坑坑洞洞或紋理鮮明)槪件, 曰如HabaS1t(D WVT-136聚矽氧橡膠襯件 媸,, 壓力燒穿塑膠形成減弱區。 使付凸塊的 10 今翻到圖2 ’其示出一與本發明一致的滾筒200。滾筒 200包含四個封合棒229,及-固持—薄片或薄膜抵住滚筒 200和封合棒229的襯件230。滾筒200之操作大致相同於 習知滚筒,但封合棒229包含一穿孔器。 滾筒 200 較佳係與 CMD 1270GDS Global DraWtape 15 System®類似且在600 fpm有大約0.5秒的封合停頓時間, 且有一可調直徑以易於改變產品重複長度。其有四個封合 棒圍繞周長等距間隔且跨越一 50”薄片寬度。此滾筒舉例來 說可用於製造垃圾桶内襯或垃圾袋。其他滾筒可有更多或 較少封合棒、較大或較小直徑、或較窄或較寬薄片寬度。 20 今參照圖3 ’其示出一依據較佳實施例之封合棒300 的端視圖。封合棒3〇〇包含一帽蓋301及部分303和305。 一加熱器匣307較佳置於分隔棒部分303和305中,藉以 200938368 允許加熱器匣307方便替換。 帽蓋301較佳是0.65英吋寬以形成此寬度之單一密 封。兩片聚醯亞胺(kapton)帶310和311 (各0.003英吋 厚)貼於帽蓋301,在機器方向對正中心。一穿孔金屬絲 5 312安裝在帽蓋301上(在較佳實施例中係缝入帽蓋301 内)之帶310和311上方。帶31〇和311係用來使穿孔金 屬絲312處於一期望高度以獲得造成穿孔處所需(金屬絲 312與襯件間之薄膜之)壓力。帶31〇和311為不同寬度, 以便提供從帽蓋高度到金屬絲高度之較和緩過渡。這有助 1〇 於由封合棒300造成之單一密封的一致性和整體性。在較 佳實施例中,帶311係〇·25英吋寬且帶31〇係0.38英吋寬。 帶310和311較佳由聚醯亞胺構成,藉以獲得一期望釋放 和磨耗平衡(在薄膜之較好釋放與帶之較大磨耗之間通常 要有所取捨)。 對鐵氟龍帶314和315被提供在帽蓋3〇1之表面上 方且在帶310# 311上方,藉以協助釋放薄膜並協助製造 出一致單一密封。帶314和315較佳為0.002英吋厚。 封合棒300較佳於橫越一薄片之一給定寬 溫度範圍,在邊緣有-獨立受控溫度區,用以製^側密 封同時用棒401製作一帶密封。 金屬絲312較佳是NiCr且可連接於一 Dc或a 且可由多條金屬絲構成,譬如用於向提帶區提供更多熱、。 6 17 20 200938368 多條金屬絲可為各自有獨立電源_立金屬絲、並 或-金屬絲之串聯區段。送往金屬絲的電力可為永 接通、脈衝式接通及斷開、或具有_以其他方式變動的 力位準。脈衝之適當定時允許密封處在薄片離開滚筒之 冷卻’以利薄片從封合棒分開。 10 15
NiCr絲312被缝入帽蓋301内致使金屬絲312與 間歇接觸(譬如薄膜經燒除者為接觸區,且薄膜未被燒除 者為不接觸區,以造出穿孔耳片)c»NiCr絲312較佳是在停❹ 頓時間(薄片抵住封合棒的時間)之前半被脈衝接通且:' 停頓時間之後半讓其冷卻,使得穿孔處在薄片從穿孔器分 開時處於未熔融狀態。這允許一較強的薄片,減少薄膜黏 附於金屬絲,並消除穿孔處熔閉的機會》 在較佳實施例中,匣式加熱器307是一訂製的繞線式 加熱區,譬如從Watlow®或Thermal Coi*p·所出品者。指定 或不同溫度設定組合(特別是薄膜上的)溫度分佈可利用 〇 壓縮空氣冷卻高溫區予以控制,詳見下文。在各實施例中, 氣冷亦用於隔絕彼此相鄰但被設定在極不同之溫度的不同 溫度區,譬如用於側密封之300°F (棒304)與用於帶密封 之 450°F (棒 401)。 今參照圖4,其示出封合棒300之一側視圖。在較佳實 施例中,封合棒300包含一用於一提帶密封(或用於一摺 邊)的第一溫度區401及一用於製作一側密封的第二溫度 20 200938368 區402。溫度區402可包含多個溫度區4〇3、404和405。 今翻到圖5,其示出圖3封合棒300之端蓋301的俯視 圖且產生一單一密封,在該單一密封内有一穿孔處或減弱 區。封合棒300可為一般已知封合棒,其改變如下。封合 5 棒300較佳是一鋁棒且有一熱棒匣式加熱器安裝於其内, 且包含一形成單一密封的封合帽蓋3〇1。帶314和315是設 置在帽蓋301頂上的釋放層,用以允許薄膜在密封形成後 ® #放。圖中所示帽蓋301部分在薄膜或薄片之一提帶區中 形成單一密封。一類似部分在無提帶區形成密封。 10 形成的單一密封可具有不一致的強度,但會有作為單 一检封所應有的充分強度,具備袋子之期望用途所要的充 分整體性。釋放層314和315較佳是Teflon®帶,然替代方 案是釋放材料為Rul〇_帶、Kapt〇n⑧帶、Mica⑧帶、 Resbond®塗料、Rescor®塗料、及/或洗注且烘烤到表面上 % 的RP聚醯亞胺樹脂(由VA之Unitech出品)。 一實施例省 略釋放層。在一實施例中,釋放層314和315延伸到鄰近 於封合區(且在其之外)的側邊區域上方(圖3),在另一 實施例中並非如此。在一實施例中,釋放層314和315延 伸到很靠近金屬絲312 (如實線314A和315A所示),且在 20 其他實施例中不如此延伸靠近金屬絲312。 單一封合區(帽蓋301之頂部)在釋放層314和315 底下及金屬絲312底下延伸。帶31〇被放到帽蓋3〇1上, 200938368 且因此在帶314和315底下但靠近金屬絲312。由於帶310 在圖5之俯視圖甲看不到,帶/釋放層31〇之邊緣31〇A以 虛線表示。帶311被放到帶310上,且在帶314和315底 下但靠近金屬絲312。因此帶311可為一釋放層,特定言之 靠近金屬絲312。帶/釋放層311之邊緣311A以虛線表示, 因為其在圖5之俯視圖中看不到。帶31〇和311較佳是 Kapton®帶,然亦可為Teflon⑧帶、如1〇_帶、Mka⑧帶、 Resbond®塗料、Rescor®塗料、澆注且烘烤到表面上的Rp 聚醯亞胺樹脂(由VA之Unitech出品)、及/或其他不黏材® 料。在各實施例中,帶310和311可被省略,或者可使用 額外的帶,這取決於預期應用之金屬絲312期望高度。在 各實施例中,金屬絲312採用膠帶以外的方法放在期望高 度,譬如用一圓邊或隆起帽蓋301、一薄金屬板等。 若封合棒300及/或帽蓋301是鋁製品,較佳使用一電 絕緣塗層以防金屬絲312短路。若使用一嵌件(詳見下文) 且該嵌件係導電的,則絕緣塗層搭配該嵌件使用。另一選❹ 擇’嵌件可由一不導電材料製成。 較佳為NiCr的加熱絲312被放在提帶區内。加熱絲312 被縫入單一封合區/帽蓋3〇1内’且亦縫穿過帶31〇和31卜 另-選擇’金屬絲312可如以下所示被缝入一嵌件内。帽 蓋3〇1較佳是用來使更換作業較容易進行—相較於更換整 個加熱器、或是重新施予釋放層並重新縫入一金屬絲,僅 需將-具備釋放層和金屬絲的新帽蓋施用於加熱器。用過 20 Ο 15 ❹ 20 200938368 的帽蓋可被整理更新。在本說 金屬絲被放入其安裝所在之材料、=== 被炼掉的區域,譬如在—穿孔處不 ^孔器金屬絲312高度對封合區寬 度)的比例應經選擇以對於一 目孤301之寬 和良好密if,日、',°疋應用同時獲得良好穿孔 相對於密封之剩餘部分可為不同。 絲312之高度可比帽蓋 用中金屬 吋。 只口丨同出0·015英吋至0.025英 英忖直終結於"'料或塗銀的銷(較佳為〇.125 兴丁1僅和0.75英崎具、。* a ^ 銀電源_線被捲繞到該 提供在h册金屬4 連接到該電源。—類似的配置被 =',在無提帶區中’具備帽蓋3〇1,帶31〇 311314和 金屬絲312。帽蓋3〇1可為一連續 =帽蓋橫越該薄片延伸。提帶區的二=合 二tr ’使得額外的壓力施加於該提帶區且因此有更多 用發生在該提帶區。另一選擇,僅有穿孔區和封合 者被抬高或甚至二者皆不被抬高。當—提帶區突 近封合概件時’該提帶區相對於封合區之剩餘部分 L σ回’從而在該提帶區中造成較大壓力。另一選擇,一 ,輪或輔助皮帶可屢抵於封合襯件背面以加大提帶區 之壓力。 21 200938368 在各實施例中,加熱絲312較佳是80%鎳與約 鉻,及/或一薄膜加熱器,及/或一電阻式加熱器,及/或^ 配置與該薄片間歇接觸,及/或有一約4歐姆/英尺的電阻, 5 10 15 及/或設置在該封合棒上一嵌件及/或匣盒内。縫入方式可 下文參照其他實施例說明。 帽蓋301之表面可經拱形造型以協助在整個提帶封人 區中造成較大壓力,且因此穿過提帶摺邊中存在之額^ 膜層傳遞更多熱並製造出-令人滿意的密封。在本說明查 中’拱形形狀包含-彎曲成—非平直表面的表面,且因二 -拱形封合表面具有異於—平直封合表面的壓力分佈 代方案為在整個封合區中提供—拱形形狀或其他外型 含扁平樣式。 :替代實施例提供僅形成側密封、沒有提帶封合區的 封口棒。在另一實施例中,匣式加埶5| 307 聚矽氧樣朧如刼堪、加熱盎州7被換成一可撓
Watl〇_屮熱器可利用感壓黏著劑(由A ―出品)固持在-鋁棒的側面。 ❹ 例中包含一嵌件細0、或在其他實施 2601,譬如 5所不’且包含—獨立加熱區 於一封人枝;一摺邊或提帶區。帽蓋/嵌件2600安裝 裝在封:棒件(如本文參照封合棒所述)包含-安 總成。帽ί rt封合棒安装、產生密封之封合區以外的 目|(如本文參照封合棒所述)包含一形成封合棒 22 20 200938368 之上部部分的總成,其被加熱以形成密封。 各實施例提供區域2601搭配有或沒有一橫越薄膜延伸 之穿孔處(舉例來說,穿孔處可為橫越一提帶,且封合處 可延長薄膜之寬度)使用。在區域2601内,有一 0.020英 对的雲母層(或—Glastherm HT®層)2603。一 NiCr絲設 置在一系列空腔或孔洞内(如圖16所示)。這些孔洞係每 0.312英叶定位—個,且在區域2601中具有0.030英吋的直 徑。嵌件是0.25英吋寬,且密封處(穿孔處係形成於其間) 相隔0.25英吋。 如圖7所示,嵌件2600的側視圖顯示一設置在區域 2601中之孔洞内的NiCr絲27〇1。該金屬絲較佳在區域26〇1 中具有0.0089英吋的直徑。金屬絲2701 (利用一壓合接頭 2705)串聯地連接於一 〇〇126NiCr絲27〇3。較大金屬絲需 要較大孔洞(在較佳實施例中為0.062英吋)。金屬絲大小 可經挑選以選擇金屬絲電阻且因此選擇提供的熱。金屬絲 2703被焊接及/或纏繞於一欲利用一壓合接頭連接於一高 溫金屬絲2707的較佳銀質銷。一釋放層可被放在該金屬絲 上或位於金屬絲與嵌件底座之間。釋放材料可包含:
Teflon® 帶 ’ Rui〇n⑧帶,Kapton⑧帶’ Mica® 帶,Resb〇nd⑨ 塗料,及Rescor®塗料。在本說明書中,釋放層包含一封合 棒或穿孔器之表面,其有一具備有助於防止熔融薄膜黏附 於該表面之特質的塗層或材料層,且位於在產生密封或穿 孔處之時與薄膜接觸的表面上或附近。 23 200938368 合之(電流)以控制金屬絲/封 备該金屬絲可在與薄膜(或襯件)接 、且在與溥獏(或襯件)結束接觸後立即斷 開。替代選擇包含金屬絲' 2701和2703之間非串聯的連接、
更多熱區(及金屬絲連接/類型)、料接電阻器/電位計或 電流強度(譬如湘PWM)控制熱。倘若使用—電位計 (pot),則使用者可藉由難該電位計來調整相對溫度。其 他實施例包含結合這些特徵,及/或其他接通/_方案。本 實施例和其他實施例可用在必須將一穿孔處定位在一密封 處旁的任何其他袋子’譬如背心袋,包含強化背心袋、有 提帶的袋子、側後封袋荨。金屬絲可在產生密封期間一些 時間斷開’且在第一密封正在形成期間的至少一部份時間 中接通。一實施例要求在金屬絲不與薄膜接觸時預加熱該 金屬絲’使其在與薄膜接觸時斷開,依靠金屬絲殘熱燒出 穿孔處。 10 15 金屬絲可用一 Resbond®高溫黏著劑固定在孔洞内,該Ο 黏著劑係利用一注射器注入孔洞内。舉例來說可使用硬質 或可撓黏著劑或二者或交替使用。可撓黏著劑允許金屬絲 撓曲,這在其被加熱和冷卻時可能發生。喪件可用五個錐 頭固定螺釘2605或用平頭固定螺釘固定在定位。 其他替代方案提供金屬絲是圓形、矩形帶狀物、平直 或是以一致或變動節距織造,沿其長度有一致厚度或不一 致厚度(藉以產生熱/冷點),T〇ss®絲、推拔狀、或經造变 24 20 200938368 以在-燒灼⑽m之間製造出二個側密封。造型金屬絲可 具有間歇鑛銅處以進打穿孔而非乾淨倒落的 金屬絲之變動節距或不同孔洞間距會 ^ 5 ❹ 10 15 ❹ 20 =區域,其允許使用者用手比較i:::= =易從薄片中間撕開。涵蓋的其他設計包含可撓聚石夕氧 橡膠加熱器、厚膜加熱技術、燒結陶究、或由Wati〇w Eiectric
ManUfacturing C。.提供的類似者。更其他的替代方案包含使 用安裝在-PNEUSEAI^__㈣上的薄膜加熱技 術,其可在任何_健處於高溫,但藉缝腿膜充氣 和洩氣而完全地移入和移離其與薄膜之接觸。 較佳實施例藉由控制-AC電壓來控制—燒孔金屬絲 的熱。AC因成本因素而為較佳,但Dc電壓控制可提供較 好的控制。較佳來說係提供一可接受穿孔處的最低電壓。 舉例來說,一與薄片接觸且在雲母下方〇12英吋之〇 25英 吋間隔交織0.013”直徑80/20 Ni-Cr絲需要每英吋薄片寬度 大約20瓦在0.75密爾(mil)LLDPE薄膜雙層厚度以每分鐘 6〇〇英尺燒出穿孔處。因此,一 2英吋長的穿孔器會在薄膜 一旦被夹在穿孔器與封合襯件之間時使用1〇伏特脈衝式接 通大約0.25秒。以一 〇.5秒停頓時間來說,穿孔處有約〇 25 秒冷卻。因此較佳實施例允許穿孔處被快速地加熱及冷 卻。在一實施例中,可調電壓係由一 Dc馬達控制器供應。 其他實施例包含一機械式變阻器、電位計、或可調電阻器。 較佳使用一可調AC電壓。 25 200938368 了利用控制器補彳員金屬絲壽命當中的電阻變化。舉 例來說,丁033(1)控制器具有電流感測回授且據此調整電壓以 維持一更一致的溫度。如同業界所熟知,匣式加熱器可利 用PID溫度控制由熱電偶回授控制。 5 其他實施例提供製造一通風袋,譬如葉形袋〇eaf bag)。通風葉形袋可能僅要求圍繞每一穿孔處34〇3的密封 3401,不需要一連續密封,如圖14所示。可利用一造型封 〇棒及/或/凰度經控制以在定位燒穿的先前實施例產生丄 密封/穿孔處。 1〇 _單一密封亦可為利用一個封合棒產生,或是利用二個 經,置使二個密封混在一起形成由兩處次級密封組成之單 一密封^亦即在其間沒有未封合薄片)的封合棒產生。該 等次級密封係大致平行且依橫越機器方向橫越薄片或薄膜 延伸,且一減弱區形成在此等大致平行次級密封之間。穿 15 减可為利用前述替代方餘-者造成。另-實施例提出 採二則述實施例之一者,但係以將側密封溫度調成非常低〇 使得不形成密封的方式運用。然後由穿孔器形成穿孔處且 密封處係來自穿孔作用的輔助密封。 孔处且 參照圖9’其示出—包含單__封合區及—設置在該單一 20 封合區内之弱化區的封合棒29〇0實施例。在密封和穿孔處 已开^成後I一密封連同其内形成的穿孔處較佳在薄膜 2912上依機器方向延伸至多〇 25英对,更佳係依機器方向 26 200938368 延伸至乡0.125英忖。在本說明書中,依機器方向延伸係包 含沿著平行於薄膜邊緣延伸之直線在一密封之一部分當中 的平均距離。 封合棒2900在一薄片或薄膜2912上形成單一密封。 5 —設置在1呂塊29G3内的E式加熱器綱1提供穩定熱量給 封合棒2900。金屬絲或電阻式加熱器2911提供產生密封及 減弱區的額外熱。金屬絲291丨較佳是一〇 〇〇七〇 〇13英吋 直徑的NiCr絲。不同的熱源結合使得二者增添熱量給封合 區和弱化區’但在此實施例中金屬絲2911主要是為弱化區 1〇 提供熱,且加熱器2901主要可被視為使總成預熱。 替代方案提出一扁平或其他形狀的電阻絲。扁平金屬 絲可有-隆脊或經彎曲以形成弱化區,其在穿孔處孔洞間 之實心部分所在處具備缺口。彎曲處底下的空氣可當 絕緣體以影響帶狀物之熱分佈。 ❹ 可使用-填隙片2905 (特定言之用於改裝)以迫使金 絲2911與薄片2912更緊雜觸。其他實施例需要在摺 邊或提帶區進行較大規模填隙(在一實施例中約〇〇2〇英 吋),使得此區域中的薄片比起薄膜其他部分遭受更大壓 20 ㈣域提供更大熱轉移量,或者完全不填隙。 貝^例在:摺邊或提帶區中於襯件背後提供一背輪, k使襯件抵住薄片且在此區中提供更大壓力。 嵌件2907較佳由-電或熱絕緣材料組成或經此材料塗 27 200938368 5 布以使金屬絲2911絕緣。在各實施例中,嵌件2907 (或該 電絕緣材料)係由雲母、glastherm、玻璃纖維合成樹脂類、 塑膠類、聚合物類、鋁(有一電絕緣塗層)或其他材料組 成°在本說明書中,Glastherm™包含一種玻璃纖維與耐熱 熱固性樹脂的複合材料。 μ 10 15 20 一釋放層2909設置在嵌件2907上,且較佳由tefl〇n⑧、 rulon®或kapton®帶構成。該釋放層或釋放劑經選擇為一合 釋放熔融薄膜但能夠承受使薄膜封合及穿孔所需之温度二 材料。在本說明書中,封合棒或嵌件上的釋放層包含一層, 此層相較於封合棒或嵌件之其他材料減少熔融薄膜在封曰合 棒或,件上的累積。此實施例的前提是薄膜僅碰觸金屬ς =嵌件上的)帶,然其他實施觸前提是薄膜直接碰觸 欣件’及/或碰觸域加熱器。替代方案提出用—释放劑塗 布於金屬絲來取代釋放層或與釋放層搭配使用。釋 ^為來自-稍後乾掉之液體層的塗布,譬如⑽、 Rescor®、Tefl〇n⑧塗料、聚矽氧塗料、或類似物。 如可橫越整個薄膜寬度延伸,或者在—區域(孽 ,-摺邊或提帶輯)巾使用二個密封橫=:ΓΧ上所述之方式形成。另無次級;封di級密封且在他處係形成單-密封而 譬如釋放劑、絕緣體、加熱器、金屬絲等各種材料的 Ο ❹ 28 200938368 厚要部分及任何摺邊或 所需的溫度、及封合表:二=達60昨或更高)和封合 擇可能導致材料過早磨損 =的能力°不當的選 表面上。替代方案提出較早接Ξ金屬積 可較早被斷開,在_尚 使得其 綱、勒、奸输冑==^機 和厚考:Ξ包含將要搭配機器使用之薄膜之種類 ,度的,、在摺邊與其他區域之間遷移㈣量、= 件材料、停頓時間、去除或解決薄膜Γ的 =、來自薄片累積在封合表面上的油墨、及提= 參照圖U ’其示出另一實施例的封合棒3000,該封人 棒包含單-封合區及-設置在該單一封合區内的弱倾: 各 前文提及有關所形成密封的總體描述及設計考量適用於此 實施例及其他實施例。一安裝在一鋁加熱器3〇〇1上的金屬 絲或電阻式加熱器3003造成密封和減弱區。在本說明蚩 中’安裝在某物上係包含直接接觸或者其間有其他^或物 體。加熱器3001可為一支撐棒而非加熱器。金屬絲%⑹ 2〇 可如前所述’且若有需要可在金屬絲3003底下、金屬絲 3003上提供一釋放劑,或者金屬絲3003可經釋放劑塗布' 金屬絲3003較佳是一縫入一有一電絕緣塗層之鋁棒内的 NiCr絲,及/或該金屬絲經一電絕緣物塗布。較佳來說談金 29 200938368 屬絲經一釋放劑(其可亦為絕緣體)塗布。 參照® 1卜另—實__合棒31 相似,但除了由一金屬 兴了 σ掙川㈨ 提夕古—、 和—支撐棒或加熱器3101 k供熱之外贿-_式加齡· 5 15 片2912上產生密封和減弱區。过、、#此在薄 參照圖12 ’另一實施例的封合棒32〇〇與封合棒雇 相似’但在薄膜式加熱器3203之間除了提供一金屬絲32〇7 和一支撐棒或加熱器32〇1外更 ' ' '、 ❹ 之外更k供一絕緣體3202,藉此 在4片2912上產生密封和減弱區。 :照圖13,一種單一封合器/穿孔器3300架構包括一 可加諸於-封合棒或—封合棒嵌件的條帶。封合器删易 於更換’因此適用於薄膜會積累在封合器上的應用。封合 器330〇包含一 NiCr絲讓(其可與前述金屬絲相似);一 釋放劑3303 ’其較佳亦為一電絕緣體且可與前述釋放劑相 似,一導熱層3305,其較佳由鋁組成以散佈由一電阻式加❹ 熱器3307產生的熱,上述各者均安裝於雙面膠帶33〇9。因 此,膠帶3309可固定於一欲用在支撐棒或封合棒上之嵌件 的頂上,或者直接貼到封合棒上。 此實施例之一修改型提出該釋放劑係—放在金屬絲上 的帶子,且在釋放劑上可有或沒有與欲形成穿孔處孔洞之 位置對準的孔洞或狹縫,使得金屬絲在這些位置與薄膜接 觸。 、 30 20 200938368 參照圖15,其示出一封合棒嵌件3500的透視圖,且包 含受熱鋁塊3501連同一加熱器匣35〇2。複數個銷3503穿 過封合棒並產生一微穿孔處。銷3503設置在鋁塊3501之 孔洞中’這些孔洞係以一角度設置以避開加熱器匣3502。 5 鎖3503可為傳導性的且連接至一金屬絲3504以加熱銷 35〇3協助穿孔及/或封合作用。此實施例及其他替代實施例 可視需要合併。舉例來說,銷35〇3可搭配一通過該等孔洞 ❹ 固持銷3503的真空使用,及/或其可與前述產生密封和穿孔 多種方式中之一者合併於單一封合棒上,其中微穿孔 1〇 ^卿顧顏,或麵侧可為形成穿减的唯一方 式0 15 〇 20 合棒中且壓,颂_係在一未受熱或受熱封 傷到刺入的=銷封合襯件材料’這會比較不容易 為與滾筒上之封A針列可為放在襯件内,且被固持 -皮帶或襯件上:薄目二藉二生穿孔處。相似地, 筒面。如果壓或銷可壓抵於—單純滾 橢圓形皮帶路徑施加,譬如兩皮帶採用- 處。封合ί Γ用Γ場或感應熱形成密封和穿孔 金屬在穿孔區中造成鐵或電磁鐵)連同背襯件的 封合區壓力較出孔洞从 置。 τ破形成為依一橫越薄膜的直線設 31 200938368 另一實施例提出密封和穿孔處係在一非圓形(譬如卵 形或長圓形)迴圈上或是在一梭動機上形成。整體而言,本 發明這些實施例要求在一穿孔處產生之時及之處產生密 封。 5 10 15 本發明當中包含同時在滚筒中穿孔及封合藉以較佳在 一窄密封之中間下方產生一穿孔處的其他方法。舉例來 說,可採用三列交錯縫入的NiCr金屬絲,其中外侧兩列產 生岔封且内側列產生穿孔處。内侧係指機器方向中之内側。❹ 當薄膜係處於拉張狀態,一個密封處可用一個圓形封 合頭造成,使得密封處的中央會在封合過程令變薄/弱化/ 穿孔。封合棒可在峰頂有一崎嶇表面藉以產生穿孔處。 封=棒可包括一放在一成型不導電材料上的電阻塗 層,使彳于熱係在封合表面上確實需要熱的地方產生,且可
具備多種不同封合高度的複雜形狀。這可藉由採用 薄膜式加熱器技術達成。 另一實施例要求加大封合襯件壓力,譬如乘以5、 或2〇夕’較佳為10倍,使得燒孔溫度可從550-600T降到 讓更多樣塗層和㈣可㈣較低溫度(許多材料具有& 下的最高作業溫度)。 更另實施例提出一種封合棒,其包括間隔〇 〇3,, 0.06”的二卿行受熱條帶,其在封合過財將薄膜拉伸 32 20 200938368 此二條帶間之一減弱或穿孔線。 薄膜可被塞入滾筒封合棒中 穿孔處可為錢筒表㈣下μ 使得 件。此塞人作用可經機械或真空助力。出不傷到封合襯 敎採:其他方法產生密封和穿孔處,鐾如利用輻射 熱、微波、或經_以特地加熱
10 15 ❹ 合薄片執封::一r側的液體,使得其將二個聚 一…、、〇起。如果尚溫液體在同時燒出孔洞,則 可,時完成穿孔作業。—高溫固體(譬如沙子絲合粒料) 或是一高溫液體(譬如油)可被迫通過薄片使得其在薄片打 洞同時形成密封。或者薄片可經化學處理以與一添加物反 應’使得薄膜一起熔化且在經施加多餘化學物之處熔出穿 孔孔洞。另一替代方案包含在滚筒中施用一定時激活的 酸’該滾筒允許薄片(未封合且未穿孔)捲繞並放入一紙 箱内’然後該定時激活的酸產生一燒除密封’使該薄片稍 後變成多個經封合/分離的袋子。 薄片可由熱傳導封合作用封合,且在停頓時間過完之 前,該薄片可被依一穿孔圖案低溫冷凍,致使當薄膜在下 游被撓曲時在每一穿孔點破裂。 今翻到圖16 (—封合棒之透視圖)、17 (俯視圖)和 18 ( —帽蓋之端視圖),其示出產生單一密封的本發明一實 施例,且在該單一密封内會有一穿孔或減弱區。封合棒3600 33 20 200938368 可為一般習知封合棒,但具備本說明書所述改變。封合棒 3600較佳是一内有一火棍匣式加熱器的鋁棒,且包含一在 一釋放層3603底下的單一封合區3602,其在一薄片之一提 帶區中形成單一密封。 5 另一個在一釋放層3613底下的單一封合區3612橫越 薄片其他部分(無提帶區)形成單一密封。產生的單一密 封可能具有不一致強度,但會有成為具備充分整體性之單 一密封的充分強度。釋放層3603和3613較佳是Teflon⑧❹ 帶。單一封合區3602在釋放層3603底下且在一釋放層3605 1〇 底下延伸。具備一穿孔器/加熱絲3607的釋放層3605在薄 片的提帶區中產生一穿孔或減弱區。釋放層36〇5較佳是 Kapton®帶。前文所述替代方案可搭配此實施例使用。 一較佳為NiCr的加熱絲3607設置在提帶區内。加熱 絲3607被縫入單一封合區3602内,且亦刺穿釋放層3605。 15 另一選擇,加熱絲3607可被縫入一由鋁或另一種材料製成 的帽蓋3801 (圖18)内。 ❹ 圖18示出帽蓋3801的端視圖,其上有釋放層3603和 3605 ’且加熱絲3607被示為刺入帽蓋3801和釋放層3605 内。帽蓋3801在另一實施例中橫越不足整個封合區36〇3。 20 加熱絲3607安裝在帽蓋3801頂上。 各種替代方案可視需要合併,藉以設計出一適合一特 殊需求的製袋機。 34 200938368 本發明可製作出許多仍在本發明之範圍以内的修改。 因此,明顯可知以上已依據本發明提出一種製袋方法和設 備,其完全滿足前文提及之目標和優點。儘管已搭配特定 實施例說明本發明,熟習此技藝者明顯可知有許多替代方 5 案、修改及變異型。因此,希望涵蓋落入隨附申請專利範 圍項之精神和廣義範圍内的所有此等替代方案、修改及變 異型。 ❹ 【圖式簡單說明】 圖1是一依據習知技藝的製袋機; 10 圖2是一依據本發明的滚筒; 圖3是一依據本發明之封合棒的端視圖; 圖4是一依據本發明之封合棒的側視圖; 圖5是一圖3封合棒之一區段的俯視圖; 圖6是一依據本發明之嵌件/帽蓋的俯視圖; 15 圖7是一圖6嵌件的側視圖; ❿ 圖8是一依據本發明的密封和減弱區; 圖9是一依據本發明之封合棒的端視圖; 圖10是一依據本發明之封合棒的端視圖; 圖11是一依據本發明之封合棒的端視圖; 2〇 圖12是一依據本發明之封合棒的端視圖; 圖13是一依據本發明之密封器/穿孔器的端視圖; 圖14是一依據本發明的密封和減弱區; 圖15是一依據本發明之封合棒之一區段的透視圖; 35 200938368 圖16是一依據本發明之封合棒之一區段的透視圖; 圖17是一圖16封合棒區段之一部分的俯視圖;且 圖18是一可搭配圖16和圖17封合棒使用之帽蓋的端 視圖。 5 【主要元件符號說明】 100旋轉式製袋機 200滚筒 201薄膜/薄片 203浮動輥總成 ίο 205、206 輥 208滚筒 209封合棒 210 、 211 輥 213封合襯件 15 215、216 輥 218裁切刀 219 、 220 輥 221控制器 229封合棒 20 2 3 0襯件 300封合棒 301帽蓋/端蓋 303部分 36 200938368 304棒 305部分 307匣式加熱器/加熱器匣 310帶/釋放層 5 310A邊緣 311帶/釋放層 311A邊緣 312金屬絲/NiCr絲/加熱絲 〇 314帶/釋放層 ίο 314A實線 315帶/釋放層 315A實線 4 01溫度區 402溫度區 15 403溫度區 404溫度區 405溫度區 2600帽蓋/嵌件 2601加熱區/區域 2〇 2603雲母層 2605錐頭固定螺釘 2701 NiCr絲/金屬絲 2703 NiCr絲/金屬絲 2705壓合接頭 37 200938368 5 10 15 20 2707 rfj溫金屬絲 2900 封合棒 2901 加熱器 2903 鋁塊 2905 填隙片 2907 嵌件 2909 釋放層 2911 金屬絲/電阻式加熱器 2912 薄膜/薄片 3000 封合棒 3001 支撐棒或加熱器 3003 金屬絲/電阻式加熱器 3100 封合棒 3101 支撐棒或加熱器 3103 金屬絲/薄膜式加熱器 3200 封合棒 3201 支撐棒或加熱器 3203 薄膜式加熱器 3202 絕緣體 3207 金屬絲 3300 封合器/穿孔器 3301 NiCr 絲 3303 釋放劑 3305 導熱層
38 200938368 3307 電阻式加熱器 3309 膠帶 3401 密封 3403 穿孔處 5 3500 封合棒嵌件 3501 鋁塊 3502 加熱器匣 3503 銷 ο 3504 金屬絲 10 3600 封合棒 3602 單一封合區 3603 釋放層 3605 釋放層 3607 穿孔器/加熱絲 15 3612 單一封合區 3613 釋放層 ❾ 3801 帽蓋 39

Claims (1)

  1. 200938368 七、申請專利範圍: 1. 一種製袋機,其包括: 一輸入段; 一滚筒,其經設置用於從該輸入段接收一薄片,其中該 5 滾筒包含至少一封合棒; 一輸出段,其經設置用於從該滾筒接收該薄片; 其中該至少一封合棒包含一形成單一密封的封合區,且 更包含一加熱絲,該加熱絲係該封合區内之一弱化區,其 在該單一密封内形成一減弱區;及 10 該至少一封合區之至少一部分上的一釋放層。 2. 如申請專利範圍第1項之製袋機,其中該加熱絲經相對於 該封合區抬高,且其中該加熱絲經縫入該封合區内。 15 3.如申請專利範圍第2項之製袋機,其中該封合區具有一接 觸該薄膜之拱形表面。 •4.如申請專利範圍第3項之製袋機,其中一第一材料經設置 在該加熱絲底下。 20 5. 如申請專利範圍第4項之製袋機,其中該第一材料係由 kapton®帶構成,且該釋放層係由丨6£1〇1^帶構成。 6. 如申請專利範圍第5項之製袋機,其中該加熱絲是一 NiCr 200938368
    7. 如申請專利範圍第1項之製袋機,其中該封合區包含一帽 蓋,且該釋放層和該加熱絲係安裝在該帽蓋上。 5 8. 如申請專利範圍第3項之製袋機,其更包括一連接於該加 熱絲的脈衝電源。 ¥ 9.如申請專利範圍第3項之製袋機,其更包括一連接於該加 10 熱絲的可調電源。 10.如申請專利範圍第1項之製袋機,其中該封合區包含一鋁 塊加熱器。 15 11.如申請專利範圍第10項之製袋機,其中該弱化區於該鋁塊 加熱器中包含複數個孔。 ❿ 12. 如申請專利範圍第11項之製袋機,其中該加熱絲係安裝在 該複數個孔中及其間。 20 13. 如申請專利範圍第12項之製袋機,其中該加熱絲係由約 80%鎳和約20%鉻組成,且具有約4歐姆/英尺的電阻。 14. 一種製袋方法,其包括: 41 200938368 接收一薄片; 利用一滚筒上之一封合棒藉由使該薄片與一封合棒發 生接觸而在該薄片上形成一單一密封,該封合棒係在一封 合表面之至少一部分上具有一釋放層; 5 於該第一密封形成過程之至少一部份時間中藉由使該 薄片與一加熱絲發生接觸而在該單一密封内形成一穿孔 處;且 自該封合棒釋放該薄膜。 10 15.如申請專利範圍第14項之方法,其中使該薄片與該釋放層 發生接觸係包含使該薄片與一第一材料發生接觸,且進一 步包括使該薄片於欲形成該穿孔處的位置與該加熱絲底下 之一第二材料發生接觸。 15 16.如申請專利範圍第14項之方法,其中使該薄片與一封合棒 發生接觸係包含使該薄片與該封合棒上一帽蓋拱形表面發 生接觸。 17.如申請專利範圍第15項之方法,其中使該薄片與一封合棒 20 發生接觸係包含在一提帶區中施加一大於在一無提帶區中 的壓力。 18.如申請專利範圍第14項之方法,其更包括依反饋來控制該 加熱絲中之熱。 42 200938368 19·如申”專利範圍第18項之方法,其更包括向該加熱絲脈動 5 20·如中請專利範圍第3項之方法,其更包括調整供予該加熱 絲之電力。 ❿21.如申凊專利範圍第15項之方法,其中使該薄片與一封合棒 發生接觸係包含使該薄片與一具有一釋放層之紹塊加熱器 10 發生接觸。 22.如^睛專利範圍第21項之方法,其更包括監測一代表該加 熱絲中之熱的信號且回應於該信號控制施予該加熱絲之電 23.—種製袋機,其包括: 用於接收一薄片的構件; 用於使該薄片熔化且在該薄片 欲封及該單一密封内之一 構件; 該溥片通過一滾筒時將一單一 減弱區加諸於該薄片上的封合 用於協助聰化薄諸雜合構件概_放構件。 24.如申請專利範圍第23項之製袋機, 第一材料及一第二材料,該薄片乂 ’其中該釋放構件包含 5亥薄片係在該第一 材料處被減 43 200938368 L且該薄片之剩餘部分係在該第二材料處被 中该封合構件包含一缝入該封合區内 筮0,且其 的加熱絲。 第―材料内 25. 如申請專利範圍第23項之製袋機,其中該封合區具有一 η 蓋,該帽蓋具備一與該薄膜接觸之拱形表面。、一帽 26. 如申請專利範圍第23項之製袋機,其中該釋放構件係由 kapton®帶和teflon®帶之至少一者構成。 27. 如申請專利範圍第24項之製袋機,其中該加熱絲是一NiCr 絲。 28. 如申請專利範圍第23項之製袋機,其中該封合構件包含用 於封合該薄片之一提帶部分的第一構件及一用於封合該薄 片之一無提帶部分的第二構件。 29·如申請專利範圍第28項之製袋機,其更包括用於依反饋來 控制該加熱絲中之熱的構件。 30·如申請專利範圍第29項之製袋機,其更包括用於向該加熱 絲提供電力的構件。 31·如申請專利範圍第27項之製袋機,其中該封合構件包含一 200938368 銘塊加熱器。 32.如申請專利範圍第31項之製袋機,其中在該鋁塊加熱器中 有複數個孔。 5 3 3 ·如申請專利範圍第3 2項之製袋機,其中該加熱絲係安裝在 該複數個孔中及其間。 A ¥ 34.—種用於一旋轉式製袋機之封合器的帽蓋,包括一用於安 10 裝在該帽蓋上的釋放層,及一縫入該釋放層内且縫入該帽 蓋内的加熱絲,其中該帽蓋包含一封合區和一穿孔區。 35.如申請專利範圍第34項之帽蓋,其中該釋放層係由一鄰近 該加熱絲的第一材料及一在該帽蓋之表面其他部分上的第 15 二材料構成。 ® 36.如申請專利範圍第35項之帽蓋,其中該加熱絲是一 NiCr 絲。 2〇 37.如申請專利範圍第36項之帽蓋,其中該加熱絲在一提帶區 中相對於該封合區其他部分經抬高。 38.如申請專利範圍第37項之帽蓋,其中在該帽蓋中有複數個 孔,且該加熱絲係安裝在該複數個孔中及其間。 45 200938368 39.如申請專利範圍第36項之帽蓋,其中在該帽蓋中有複數個 孔,且該加熱絲係安裝在該複數個孔中及其間。 5 40.—種用於一旋轉式製袋機的穿孔器,包括一用於安裝在一 加熱器上的釋放層,及一缝入該釋放層及該加熱器内的加 熱絲。 41. 如申請專利範圍第40項之穿孔器,其中該釋放層係由一鄰 1〇 近該加熱絲的第一材料及一在該加熱器之表面其他部分上 的第二材料構成。 42. 如申請專利範圍第41項之穿孔器,其中該加熱絲是一 NiCr 絲。 15 43. 如申請專利範圍第42項之穿孔器,其中該加熱絲在一提帶 區中相對於該封合區其他部分經抬高。 44. 如申請專利範圍第43項之穿孔器,其中在該加熱器中有複 20 數個孔,且該加熱絲係安裝在該複數個孔中及其間。 46
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