WO2005048763A1 - 高気密性プラスチックチャックの製造方法および高気密性プラスチックチャック - Google Patents
高気密性プラスチックチャックの製造方法および高気密性プラスチックチャック Download PDFInfo
- Publication number
- WO2005048763A1 WO2005048763A1 PCT/JP2004/016725 JP2004016725W WO2005048763A1 WO 2005048763 A1 WO2005048763 A1 WO 2005048763A1 JP 2004016725 W JP2004016725 W JP 2004016725W WO 2005048763 A1 WO2005048763 A1 WO 2005048763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chuck
- plastic
- plastic chuck
- easily peelable
- slider
- Prior art date
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Classifications
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- 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
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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- 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
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/58—Snap connection
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- 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
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
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- 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
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- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1242—Tongue and groove joints comprising interlocking undercuts
- B29C66/12421—Teardrop-like, waterdrop-like or mushroom-like interlocking undercuts
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- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
- B29C66/12449—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being asymmetric
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- 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
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1248—Interpenetrating groove joints
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- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/524—Joining profiled elements
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- 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
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- 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
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
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- 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
- B29C66/9261—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 displacement of the joining tools
- B29C66/92611—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 displacement of the joining tools by controlling or regulating the gap between the joining tools
- B29C66/92615—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 displacement of the joining tools by controlling or regulating the gap between the joining tools the gap being non-constant over time
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
- B65D33/255—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape being provided with special visual, audible or tactile indicating means, e.g. indicating proper engagement
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- 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
- B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
- B29C66/93441—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed the speed being non-constant over time
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- 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
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
- B29C66/9513—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools characterised by specific vibration frequency values or ranges
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- 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
- B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
- B29C66/951—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools
- B29C66/9517—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 by measuring or controlling the vibration frequency and/or the vibration amplitude of vibrating joining tools, e.g. of ultrasonic welding tools characterised by specific vibration amplitude values or ranges
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- 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
- B29L2005/00—Elements of slide fasteners
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
- B31B70/813—Applying closures
- B31B70/8131—Making bags having interengaging closure elements
- B31B70/8132—Applying the closure elements in the machine direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/25—Zipper or required component thereof
- Y10T24/2532—Zipper or required component thereof having interlocking surface with continuous cross section
- Y10T24/2534—Opposed interlocking surface having dissimilar cross section
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/25—Zipper or required component thereof
- Y10T24/2539—Interlocking surface constructed from plural elements in series
- Y10T24/2545—Dissimilar opposed elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
- Y10T24/45152—Each mating member having similarly shaped, sized, and operated interlocking or intermeshable face
- Y10T24/45157—Zipper-type [e.g., slider]
- Y10T24/45168—Zipper-type [e.g., slider] for container [e.g., bag]
Definitions
- the present invention relates to a plastic chuck with a slider, which has a high degree of airtightness, can be easily opened, and can be easily resealed, and is used for packaging containers of foods, medicines, electronic parts, and the like, and the chuck. With attached bag.
- Bags provided with plastic chucks are often used as packaging materials for foods, medicines, electronic parts and other various articles. Particularly, plastic chucks with sliders are easy-opening and resealable packaging materials. It is heavily used.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-262307). Gazette
- Patent Literature 2 Patent No. 2938784
- Patent Literature 3 US Patent Specification No. 5007143
- Patent Literature 4 US Patent Specification No. 6293701.
- a chuck utilizing the principle is known as a plastic chuck with a slider having a large opening strength and a large content side force.
- the plastic chuck disclosed in Patent Document 2 has a sealing property itself, but the other plastic chucks and general plastic chucks disclosed in the aforementioned Patent Documents have a sealing property. I do not have it.
- FIGs. 14 to 19 show examples of a plastic chuck with a slider having a conventionally known opening detection function.
- Fig. 14 partial cross-sectional perspective view
- Fig. 15 which is a sectional view taken along the line AA ⁇ ! /
- the bag 9-3 has a chuck 9-2 and a slider 9-1 attached.
- H The slider and chuck at the top of the backed bag are covered with a cover film 94 with perforations 9-5.
- the perforation 9-5 is cut off and the slider is used to open and close the chuck. Therefore, the operability is simple and good, but the appearance is poor and the productivity is industrially low. There is a disadvantage that it is inferior.
- a chuck having a chuck 9-2 and a slider 9-1 in a bag 9-3 In the example shown in Fig. 16 (partial cross-sectional perspective view) and Fig. 17 which is a cross-sectional view taken along the line B-B ', a chuck having a chuck 9-2 and a slider 9-1 in a bag 9-3.
- a partition film 114 with perforations 11-5 is provided inside the attached bag.
- the chuck 9-2 is opened with the slider 9-1, and then the perforations 11-5 of the partition film 114 are opened, so that the appearance and productivity are good.
- the fine particles such as powder are the contents, the problem arises that the fine particles are clogged in the partition film 114 and smooth discharge cannot be performed.
- Fig. 18 which is a perspective view
- the bag with the chuck 9-2 and the slider 9-1 attached to the bag 9-3 is in a state where the slider 9-1 is in the closed position.
- the upper part of the chuck 9-2 is spot-welded 13-1 and the slider 91 cuts out the spot-welded part at the first opening.
- Fig. 19 is a perspective view
- a part of the chuck upper part 144 provided with perforations 145 and the like in the bag 9-3 with the chuck 9-2 in the closed position is notched.
- the slider 9-1 is attached to the lever.
- the upper part of the chuck 14-4 is also cut off with the slider 9-1 at the perforation 145.
- the method shown in Figs. 14 and 16 has an advantage that the sealing property of the bag body can be ensured even when a perforation is employed.
- It cannot be used for applications that require long-term storage, such as retort foods, because it depends on the nature of the food.
- Patent Document 5 WO 02/38459 A1
- a plastic chuck with a slider and a bag with a plastic chuck with a slider are disclosed. That is, as shown in Fig. 4 (a), the top of the male hook 3-1 and the bottom of the female hook 3-2 in the plastic chuck with a slider, and the slider guide projections G-1, G-2, Easy release plastic layer Adhesion through A-1, A-2, A3-5, A3-6, or continuous pressing rib 14 and continuous tightening wall 1 on plastic chuck with slider as shown in Fig. 3 (c). -2, and the slider guide projections Gl and G-2, respectively, through the easily peelable plastic layers A-2, A-1, A-5, and A-6. This was achieved by using two different colors.
- Patent Document 5 discloses a method of bonding a chuck portion with an easily peelable plastic layer, which includes heat sealing using a hot air nozzle, a heat sealing hot plate, an ultrasonic heat sealing, a high frequency heat sealing, and the like. Although it states that it is used, there is no description on the specific application method.
- the inventors of the present application have conducted intensive studies on a method of bonding the chuck portion with an easily peelable plastic layer, and as a result, the following has been added.
- the heat sealing using a hot air nozzle and the bonding using a heat sealing hot plate have the advantage that the equipment cost is low and can be easily applied, but it is difficult to control the welding area and the welding position uniformly. Therefore, the easily peelable plastic layer can be welded, but it is difficult to keep the peel strength of the easily peelable plastic layer within a certain range. Also, if it is heated too much, the claw part will be deformed, causing a defect in the chuck function. As a result, the operation of the slider becomes extremely heavy, and the chuck frequently opens and closes, resulting in a problem of lack of stability in industrial production.
- Patent Document 7 Japanese Patent Laid-Open No. 11-198233
- Patent Document 8 WO 03/022697 A1
- a plastic chuck with a highly airtight slider formed by welding an engaging portion of a plastic chuck via an easily peelable plastic layer.
- Patent Document 1 JP-A-2000-262307
- Patent Document 2 Japanese Patent No. 2938784
- Patent Document 3 U.S. Patent Specification No. 5007143
- Patent Document 4 U.S. Patent Specification No. 6293701
- Patent Document 5 WO 02/38459 A1
- Patent Document 6 JP-A-9-323708
- Patent Document 7 JP-A-11 198233 Disclosure of the invention
- the present invention provides a plastic chuck having an easily peelable plastic layer extending in the longitudinal direction of the plastic chuck, in which the easily peelable plastic layer is welded by ultrasonic waves and the peel strength of the welded portion is within a certain range.
- the purpose of the present invention is to provide a method for manufacturing a conductive plastic chuck.
- Another object of the present invention is to provide a method for continuously manufacturing a highly airtight plastic chuck in which the peel strength of a welded portion is within a certain range.
- the present invention also provides a highly airtight plastic chuck characterized in that the peel strength of the portion where the easily peelable plastic layer is welded is substantially uniform in the longitudinal direction of the plastic chuck. Aim.
- Another object of the present invention is to provide a highly airtight plastic chuck having a new structure using an easily peelable plastic layer and capable of continuous ultrasonic welding. It is.
- Still another object of the present invention is to provide a highly airtight plastic chuck having an easy-to-peel plastic layer welded thereon, provided with an opening detection function, and having a slider.
- the plastic chuck has a pair of engaging portions formed on the surface of a plastic film, and has an easily peelable plastic layer extending in the longitudinal direction of the plastic chuck at or near the engaging portion. Then, in the plastic chuck, the engaging portion is in an engaged state, and a portion where the easily peelable plastic layer of the plastic chuck exists between the ultrasonic horn and the anvil is inserted into the ultrasonic horn.
- the distance L between the plastic chuck and the anvil is kept constant at an interval of H ⁇ L ⁇ 0.85H with respect to the maximum thickness H of the plastic chuck in the engaged state.
- the easily peelable plastic layer is The object is achieved by a method for manufacturing a highly airtight plastic chuck, which is characterized by melting and bonding. Further, according to the present invention, in the above method, the ultrasonic horn is kept at a constant frequency and amplitude, and the ultrasonic horn is placed between the ultrasonic horn and the anvil. The object is achieved by moving the plastic chuck in the longitudinal direction and continuously fusing the easily peelable plastic layer in the longitudinal direction. In this case, the bonding strength (peeling strength) of the bonding portion by the easily peelable plastic layer can be adjusted by changing the moving speed of the plastic chuck in the longitudinal direction.
- the width of at least one of the ultrasonic horn and the anvil has a size smaller than the opening width of the female hook of the plastic check in the engaged state.
- a plastic chuck having a pair of male and female hooks formed on the surface of a plastic film, and a continuous tightening wall parallel to the hooks inside one hook.
- a plastic chuck having a continuous pressing rib parallel to the claw inside the other claw, and an easy-peeling plastic layer previously provided on at least one surface of the continuous clamping wall and the continuous pressing rib.
- a plastic chuck having a pair of engaging portions formed on a surface of a plastic film, wherein at least one of the engaging portions extends in a longitudinal direction of the plastic chuck.
- One or more projections are provided, and at least the tip portion of the projections has flexibility, and an easily peelable plastic layer is provided in advance on the surface of the projection or the other engaging portion facing the projection,
- the object is achieved by a highly airtight plastic chuck characterized in that the easily peelable plastic layer is melt-bonded.
- the flexible projection is bent in a state in which the surface of the other opposing engaging portion is radiused. It is preferred to make contact.
- a plastic chuck having a pair of engagement portions formed on the surface of a plastic film
- at least one flange portion near the engagement portion has at least one flange extending in the longitudinal direction of the plastic chuck.
- the protrusion has flexibility at least at the tip portion, and the protrusion or the surface of the other flange portion facing the protrusion is provided.
- the flexible distal end portion of the projection is radiused on the surface of the other opposite flange portion. Preferably, they are in contact. Furthermore, in a state where the pair of engagement portions of the plastic chuck are engaged with each other and exhibit the maximum thickness, it is more preferable that the flexible distal end portion of the projection bend toward the content side. .
- a pair of projections is provided at the opening end of the flange portion, and an easily peelable plastic layer is provided in advance on at least one of the projections.
- the easily peelable plastic layer may be melt-bonded.
- a plastic chuck having a pair of engaging portions formed on a surface of a plastic film, wherein the male claw or the male claw facing the female hook forms the engaging portion.
- the object is attained by a highly airtight plastic chuck, wherein an easily peelable plastic layer is provided in advance on the surface of the hook-side flange portion, and the easily peelable plastic layer is melt-bonded.
- the above object is achieved by providing the above-mentioned highly airtight plastic chuck with a slider. Further, the highly airtight plastic chuck of the present invention can be used as an outlet of the bag to provide a highly airtight bag.
- the plastic chuck has a pair of engaging portions formed on the surface of a plastic film, and has an easily peelable plastic layer extending in the longitudinal direction of the plastic chuck at or near the engaging portion. Then, in the plastic chuck, the engaging portion is in an engaged state, and a portion where the easily peelable plastic layer of the plastic chuck exists between the ultrasonic horn and the anvil is inserted into the ultrasonic horn.
- the gap L between the plastic chuck and the anvil is kept constant at a distance of H ⁇ L ⁇ 0.85H with respect to the maximum thickness H of the plastic chuck in the engaged state.
- the easily peelable plastic layer is By melting and bonding, a highly airtight plastic chuck having a peel strength within a certain range can be manufactured.
- this method can be applied to the conventional batch type general-purpose ultrasonic welding equipment. It is possible.
- the distance L between the ultrasonic horn and the anvil is fixed at a distance of H ⁇ L ⁇ 0.85H with respect to the maximum thickness H of the plastic chuck in the engaged state as described above.
- the ultrasonic horn is kept at a constant frequency and amplitude, and the plastic chuck between the ultrasonic horn and the anvil is moved in the longitudinal direction to obtain an easily peelable plastic layer.
- the peeling force can also be adjusted by changing the speed at which the plastic chuck moves in the longitudinal direction of the plastic chuck by changing the adhesive strength (peeling strength) of the bonded portion by the easily peelable plastic layer. There is no need to control various factors such as frequency, amplitude, and pressure.
- the easily peelable plastic layer is melt-bonded, and the peel strength of the bonded portion is substantially uniform in the longitudinal direction of the plastic chuck. It is.
- one or more protrusions extending in the longitudinal direction of the plastic chuck are provided at or near the engagement portion of the plastic chuck, and the protrusion has flexibility at least at the distal end.
- An easily peelable plastic layer is previously provided on the surface of the other engaging portion or flange portion facing the projection. By melting and bonding the easily peelable plastic layer, a highly airtight plastic chuck can be obtained.
- the protrusions have flexibility, an easily peelable plastic chuck can be used without applying excessive force to the engaging portion.
- the layers can be welded. For this reason, welding can be performed continuously by the ultrasonic device.
- the flexible distal end portion of the projection is bent toward the content side. In this way, even if the plastic chuck is used for a bag and the contents are sealed therein, and the bag is pressurized, the sealed portion can be kept airtight so that the welded portion is hardly peeled off.
- the top of the female claw that forms the engaging portion is provided with an easily peelable plastic layer previously provided on the surface of the male claw-side flange facing the top.
- a highly airtight plastic chuck can be obtained by melting and bonding the easily peelable plastic layer. Since the female claw itself has flexibility, the exfoliated plastic layer can be melt-bonded easily without applying excessive force to the engaging portion.
- the highly airtight plastic chuck to which the easily peelable plastic layer is welded has an opening detection function.
- FIG. 1 is a perspective view of an example of an ultrasonic welding apparatus used for manufacturing the plastic chuck of the present invention
- FIG. 2 is a sectional view of the apparatus shown in FIG. 1 (a hatching for showing a cross section is partially omitted).
- R showing a state in which an embodiment of the plastic chuck of the present invention is held.
- Figs. 3 to 8 show cross sections of the plastic chuck of the present invention in various shapes or states, but hatching for showing the cross sections is omitted, and the hatched portions are provided with an easily peelable plastic layer. Indicate where you are.
- FIG. 3 (a) is a cross-sectional view of one embodiment of the plastic chuck of the present invention, which is shown in a state where the engagement portion of the plastic chuck is not engaged.
- FIG. 3 (b) is a cross-sectional view showing a state where the engaging portion of the plastic chuck of FIG. 3 (a) is engaged.
- a pair of male and female hooks 11 and 13 are formed on the surface of a plastic film F.
- a continuous tightening wall 1 2 parallel to the claw 1-1 is provided inside one claw 1 1, and a continuous pressing rib 1-4 parallel to the claw 13 is provided inside the other claw 13.
- An easily peelable plastic layer A-2 is provided on the surface of the tip of the continuous pressing rib 1-4 in advance.
- the engaging portion also has a pair of hooks 1-1, 1-3 and a rib 14 force.
- this plastic chuck is provided with protrusions G-1 and G-2 for mounting a slider on the flange portions C1 and C2 on the opening side of the chuck, respectively, and a slider (not shown) must be mounted. Is possible.
- the plastic chuck C moves in the longitudinal direction between 1 and 2, it also moves in the vertical direction in FIG. 2, and as a result, the effect of the ultrasonic wave fluctuates. 2 is not melted, and the adhesive strength between the continuous fastening wall 12 and the continuous pressing rib 14 becomes unstable.
- the anvil rubs the outer surface of the chuck C, causing the outer surface of the chuck to lose its luster and generating harmful plastic fines in electronic circuits and the like. Therefore, the distance L between the ultrasonic horn H-1 and the anvil AV-1 must not be larger than the maximum thickness H.
- the interval L between the ultrasonic horn H-1 and the anvil AV-1 must be in the range of H ⁇ L ⁇ 0.85H.
- the bonding area and the bonding force of the chuck engaging portion increase. Even when the interval L is within the range of the flexible length of the chuck C (H ⁇ L ⁇ 0.85H), as the interval L is reduced, the adhesive area increases and the adhesive force also increases. In order to adjust the increased bonding force, the moving speed of the chuck C in the longitudinal direction may be increased, but as the moving speed increases, the sliding resistance increases. When the sliding resistance increases, the chuck C is easily deformed by the tension of the chuck C. Therefore, the selection range of the adhesive strength of the chuck when a constant output ultrasonic wave is applied gradually decreases as the distance L decreases.
- the distance L between the ultrasonic horn H-1 and the anvil AV-1 is desirably H ⁇ L ⁇ 0.95H.
- the ambil AV-1 is connected to the fine height adjustment unit AV-2 in order to appropriately adjust the interval L. It is preferable that the height L can be adjusted at the level of 0.01H in the fine height adjustment section AV-2. Then, the distance L between the ultrasonic horn H-1 and the anvil AV-1 may be adjusted in advance using a thickness gauge (not shown) or the like!
- the length Lh of the ultrasonic horn H-1 shown in FIG. 1, the length La of the anvil AV-1 and their shapes will be described. If the length Lh of the ultrasonic horn H-1 is long, the distance between the ultrasonic horn H-1 and the anvil AV-1 fluctuates in the longitudinal direction, and the take-off power is increased by resistance when the chuck is moved in the longitudinal direction. The chuck increases when the moving speed increases. This defect is noticeable in the anvil when ultrasonic vibration is applied intermittently. To avoid this, the length Lh and Z of the ultrasonic horn H-1 or the length La of the anvil AV-1 should preferably be within 50 mm.
- a constant compressive force is applied between the claws 11 and the claws 13 shown in (a) and (b), and as shown in FIGS. 1 and 2, the ultrasonic horn is used.
- the plastic chuck C is sandwiched between H-1 and Anvil AV-1, the continuous pressing ribs 14 engaged between the ultrasonic horn H-1 and Anvil AV-1 are pressed against the continuous tightening wall 12 Then, a force is applied in the direction in which the tip of the claw 1 1 opens, and the claw 13 engaged with the claw 1 1 is pressed, and the claw 1-1 is moved between the claw 1-1 and the claw 1-3. Further compressive force is applied.
- the widths Wh and Wa of the ultrasonic horn H-1 and the anvil AV-1 must be adjusted to the opening width 7? Of the claw 13 having the continuous pressing rib 14?
- the effective width of the ultrasonic horn H-1 and the anvil AV-1 excluding the arc portion is preferably larger than the width 7? Of the base of the continuous pressing rib 14.
- slide guides SG-1 and SG-2 for guiding the plastic chuck C are provided.
- the slide guides SG-1 and SG-2 are very important for preventing the lateral displacement of the chuck C due to the reflection of ultrasonic waves.
- the type of force guide is not limited to Fig. 2.
- the amplitude is not more than 11 to 200 ⁇ m, preferably 10 to 50 ⁇ m.
- the amplitude of can be selected.
- the frequency may be selected to be a fixed frequency in the range of 5 to 100 KHz, preferably 20 to 50 KHz.
- the distance L between the ultrasonic horn H-1 and the anvil AV-1 is kept constant in the range of H ⁇ L ⁇ 0.85H, and the distance is kept constant by the guides SG-1 and SG-2.
- the guided plastic chuck C in the engaged state is sandwiched between the ultrasonic horn H-1 and the anvil AV-1 in close contact therewith. Then, the plastic chuck C is moved in the longitudinal direction of the plastic chuck as shown by the arrow in FIG. 1 while the frequency and amplitude of the ultrasonic wave are kept constant in the above-mentioned ranges, so that the peeling is easy.
- the continuous pressing ribs 14 and the continuous clamping walls 1-2 can be continuously welded by melting the plastic layer.
- the adhesive strength becomes weaker and the adhesive area becomes smaller. Decreasing and slowing the moving speed increases the bonding strength and also increases the bonding area. That is, by changing the moving speed of the chuck, the adhesive strength and the peel strength of the welded portion can be adjusted.
- FIGS. 3 (c), (d) and (e) show plastic chucks similar to the plastic chucks shown in FIGS. 3 (a) and 3 (b), respectively.
- a pair of claws 1-1, 13 are formed on the inside of one claw 1 1 and parallel to this claw 1 1 A force which has a continuous tightening wall 12 and a continuous pressing rib 14 parallel to the claw 13 inside the other claw 13 A force shown in FIGS. 3 (a) and 3 (b) It is different from the one shown in the above.
- FIG. 3 (d) shows a state in which the engaging portions are engaged similarly to FIG. 3 (b).
- the distal ends of the opening side flange portions C 1 and C 2 are shown.
- the projections GF-1 and GM-1 are provided on the respective portions, and the points of the projections are different from those of the above-described embodiment in that the tips of the projections can be engaged with each other.
- the easily peelable plastic layer is provided even if the continuous tightening wall and the continuous pressing rib have various cross-sectional shapes, not limited to the shapes shown in the examples of Figs. If so, the easily peelable plastic layer can be melted by the ultrasonic welding device by the above-described method to obtain the highly airtight plastic chuck of the present invention.
- an object to which the present invention is applied is an engaging portion of a plastic chuck having a cross-sectional shape different from that of the plastic chuck provided with the continuous fastening wall and the continuous pressing rib inside the pair of male and female claws described above.
- a case where a highly airtight plastic check is provided by adhering through an easily peelable plastic layer will be described based on the embodiment shown in FIG.
- FIG. 4 (a) is a cross-sectional view of a general-purpose plastic chuck with a slider in which a pair of male and female hooks 3-1, 3-2 are formed on the surface of a plastic film. It shows the state where it was done.
- FIG. 4 (b) is a sectional view showing the claws 3-1 and 3-2 in FIG. 4 (a) separately. As shown in Fig. 4 (b), the tips of male and female claws 3-1 and 3-2 are (The claw 3-1 is upward and the claw 3-2 is downward in the figure), and the symbols X and y are the heights of the tips of the respective claws.
- the male and female claws are inclined in opposite directions to release the engagement in the engaged state as shown in Fig. 4 (a). Gap between the top of the male claw 3-1 and the bottom of the female claw 3-2, the gap between the top of the female claw 3-2 and the flange of the male claw / 3
- FIG. 4 (a) in which the easily peelable plastic layers ⁇ -1 and ⁇ or ⁇ -2 are previously provided on at least one surface of the top of the male claw and the bottom of the female claw while pressing.
- the plastic chuck as shown in Fig. 1, when melting the easily peelable plastic layer using ultrasonic waves and bonding the top of the male claw 3-1 and the bottom of the female claw 3-2, the chuck is engaged.
- j8 In the combined state, j8 must be greater than ⁇ and greater than either x or y, whichever is smaller. If ⁇ ⁇ , the female claw 3-2 and the male claw flange contact each other before the top of the male claw 3-1 of the chuck and the bottom of the female claw 3-2 come into contact with each other. As a result, since the top of the female claw 3-2 and the flange of the male claw adhere to each other, the female claw is deformed and the function of the chuck cannot be exhibited.
- FIGS. 4 (c) and 1 (f) show an embodiment of the highly airtight plastic chuck of the present invention which has solved these disadvantages.
- Fig. 4 (c)-(f) at least one of the male hook 3-1 and the female hook 3-2 of the plastic chuck is provided with one or more flexible projections 3-4.
- the easily peelable plastic layers A-1 and A-2 are previously provided on the surface of any one of the male claw 3-1, the female claw 3-2, and the flexible projection 3-4.
- the projections 3-4 may have flexibility as a whole, or may have a length as shown in FIG. 4 (f), and in this case, only the tip portion may have flexibility! .
- a flexible projection 3-4 is provided at the tip of the male claw 3-1, and the easily peelable plastic layer A-1 is provided at the tip and the projection 3-4. Is provided.
- the male and female claws are engaged, and in the state of H, which is the maximum thickness at the time of engagement, the tip of the projection 3-4 is also separated from the bottom force of the female claw 3-2.
- This plastic chuck is provided with protrusions G-1, G-2 for mounting a slider on flange portions C1, C2 on the opening side of the chuck, respectively, so that a slider can be mounted.
- a flexible projection 3-4 is provided inside the female claw 3-2, and the projection 3-4 is provided with an easily peelable plastic layer A-2. I have. The male and female claws are engaged, and the tip of the projection 3-4 is in contact with the tip of the male claw 3-1 in the state of H, which is the maximum thickness at the time of engagement.
- flexible projections 3-4 are provided inside the female hooks 3-2, and are provided inside the male hooks 3-1, and at the tips of the projections 3-4.
- Easy-release plastic layers A-1 and A-2 are provided.
- the plastic zipper shown in FIGS. 4 (c) and 1 (f) is an ultrasonic horn H-1 and anvil AV-1 which are held at regular intervals in a state where the male and female claws are engaged.
- the high airtightness of the present invention is obtained by melting the easily peelable plastic layers A-1 and A-2 by ultrasonic waves and welding the male claws and the female claws through the projections. It becomes a plastic chuck.
- the tip of the projection 3-4 is crimped on the male claw or the female claw while being radiused toward the content side. Good.
- the plastic chuck is attached to the bag with the plastic chuck attached to the bag. Even when pressure is applied, that is, when pressure is applied to the engagement portion of the chuck from the content side, the adhesive portion is unlikely to peel off, so that the contents such as liquid do not leak due to the internal pressure. Conversely, since it is easy to peel off from the opening side, when the chuck is opened by the slider, the opening of the chuck can be easily performed without increasing the movement of the slider.
- the condition of the distance L between the ultrasonic horn H-1 and the anvil AV-1 when welding the plastic chuck shown in FIG. 4C will be described.
- the flexible length of the projection shown in Fig. 4 (c) (the length that the projection moves radially) is ⁇ , and the distance between the tip of the projection and the other claw (Fig. 4 (c) is the tip of projection 3-4)
- the distance between the bottom of the female claw and the bottom of the female claw (X, the distance between the top of the other claw and the surface of the flange (Fig. 4 (c)) shows the top of the female claw 3-2 and the flange on the male claw side
- the inequality (1) must be satisfied.
- the male claw and the female claw are in contact with each other via the protrusion in the state of H which is the maximum thickness at the time of engagement. This is even more desirable than the embodiment of (c).
- the condition of the distance L between the ultrasonic horn H-1 and the anvil AV-1 when welding this plastic chuck will be described.
- the distance L between the ultrasonic horn H-1 and the anvil AV-1 satisfies the following inequality (6). It is necessary to keep the interval of addition.
- a constant interval L should be maintained within the range of the above inequality (7).
- the width of the anvil A V-1 and the ultrasonic horn H-1 need not be particularly limited.
- the reaction force due to the radius of the projection falls within an appropriate range in this state, and the chuck friction resistance by the anvil AV-1 and the ultrasonic horn H-1 does not increase. .
- the distance L between the ultrasonic horn H 1 and the anvil AV-1 is set to the inequality (6), preferably What is necessary is just to weld through the easily peelable plastic layer while keeping it constant within the range of the inequality (7).
- the ultrasonic horn can be moved within a sufficiently wide error range, even with a bag having a long width, a male hook can be easily inserted through the easily peelable plastic layer using a batch-type general-purpose ultrasonic welding device.
- the nails and female claws can be bonded.
- FIG. 5 (a) and FIG. 5 (g) are cross-sectional views showing another embodiment, in which the male and female claws are easily formed inside the female claw 3-2 of the embodiment shown in FIG. Unlike the adhesive bonded through the release plastic layer, in the embodiment of FIG. 5, the outer surface of the claw is bonded to the flange through the easily peelable plastic layer.
- a flexible projection 5-1 is provided on the top of the female hook 3-2-1 on the opening side, and this projection is provided on the opposite opening side flange portion C1. It touches in a state of being radiused to the contents side.
- the easily peelable plastic layer A is provided in advance on at least one of the protrusion 5-1 and the flange portion C1 facing the protrusion 5-1. Assuming that the flexible length of the projection 5-1 (the length in which the projection can move radially) is ⁇ , the same relationship as the above inequalities (6) and (7) is obtained.
- the top of the female claw 3-2-1 is bonded to the flange C1
- the top of the male claw 3-1 contacts the bottom of the female claw 3-2-1.
- Male claw 3—2—1 at top It is more preferable to make contact with the flange portion C 1 on the claw 3-1 side, where a> ⁇ .
- the flexible length ⁇ must be larger than the smaller one of the claw heights X and y.
- the distance L between the ultrasonic horn ⁇ -1 and the anvil AV1 has the following relationship as in the embodiment of FIG. 4 (e).
- the ultrasonic horn H-1 and the anvil AV-1 should be kept at a constant interval L within the range of the above inequality (7).
- the distance L between the ultrasonic horn H-1 and the anvil AV-1 is within the above range, the male and female claws of the chuck are in contact with each other. Since no compression force is applied, there is no danger that the claws will weld together. For this reason, the width Wh and Wa and the length Lh and La of the anvil AV-1 and the ultrasonic horn H-1 do not need to be particularly limited.
- the engaging portion of the plastic chuck is sandwiched between the ultrasonic horn H-1 and the anvil AV-1 held at such a fixed interval, and By moving the plastic chuck engaged in a state where the frequency and amplitude are kept constant in the longitudinal direction of the plastic chuck, the easily peelable plastic layer is melted, and the top and the flange of the female claw are melted. Are continuously adhered in the longitudinal direction of the chuck via the projections radial to the content side, and a highly airtight plastic chuck is obtained. Further, by changing the moving speed in the longitudinal direction, the bonding strength of the bonding portion can be adjusted. Furthermore, the opening side of the chuck If the flanges C 1 and C 2 of the, respectively, have projections G-1 and G-2 for mounting the slider, a highly airtight plastic chuck on which the slider can be mounted can be obtained.
- FIG. 5 (c) is similar to the embodiment shown in FIG. 3 (a) in that a pair of male and female claws 1-1, 1-3 and A force that is a plastic chuck having parallel continuous pressing ribs 14. Easy peeling plastic layer A force Open female hook claw 13-3 on the front end surface of the continuous pressing rib 14 in Fig. 3 (a). 3 is different from that of FIG. 3 (a) in that it is provided at the top of No. 1 and at the location of the opening side flange C1 opposed thereto.
- the maximum flexible length in the thickness direction of the plastic chuck in the engaged state is about 0. 15H.
- the opening side flange is formed by the ultrasonic welding device.
- Ultrasonic horn for bonding C 1 and the top of the open female claw 1-3-1 The distance L between L-1 and anvil AV-1 is
- the embodiment of Fig. 5 (d) differs from the embodiment of Fig. 5 (c) in that a flexible projection 5-1 is provided on the top of the female claw 13-1 on the opening side. Although different, the other points are substantially the same as the embodiment of FIG. 5 (c).
- the distance L between the ultrasonic horn ⁇ -1 and the anvil AV-1 when the opening flange C-1 and the opening female hook 13-1 are bonded via the protrusion 5-1 is
- FIG. 5 (e) and FIG. 5 (f) show another form of a plastic chuck utilizing the so-called lever principle, in which a flexible portion is provided on the top of the projecting portion 5-2 on the opening side of the engaging portion.
- the protrusions 5-1 are provided, and the easily peelable plastic layer A is provided on the protrusions 5-1 and Z or at an opposing position.
- the distance L between the ultrasonic horn H-1 and the anvil AV-1 is
- the ultrasonic horn H-1 and the anvil AV-1 should be kept at a constant interval L within the range of the above inequality (7)! / ,.
- an easily peelable plastic layer is previously provided on the top of the female claw 3-2-1.
- male claws 3-1 are not flexible in chucks, but female claws 3-2-1 are often flexible.
- the female claw 3-2-1 has flexibility, it is not necessary to provide a flexible projection as shown in FIG. 5 (a) on the top of the female claw.
- the male claw 3-1 and the female claw 3-2 It is necessary to set it to ⁇ in order to prevent adhesion to the bottom.
- the distance L between the ultrasonic horn ⁇ -1 and the anvil AV-1 is
- the embodiment shown in Fig. 5 can be continuously welded by an ultrasonic welding apparatus, and the control width is in the range of H ⁇ L ⁇ 0.85H as described above.
- the ultrasonic horn can be moved within a wide error range. For this reason, even if the bag has a long width, the female hook and the flange can be easily bonded via the easily peelable plastic layer using a batch-type general-purpose ultrasonic welding device.
- FIG. 6 (a) and 6 (d) show an embodiment in which at least the distal end portion is provided with a flexible projection on the flange portion near the engaging portion of the chuck.
- Figure 6 (a) shows the plastic film
- FIG. 3 is a cross-sectional view of an embodiment of a plastic chuck with a general-purpose slider having a pair of male and female claws 3-1 and 3-2 formed on the surface, showing a state in which a pair of claws are engaged with each other. ing.
- a flexible projection 5-1 is provided on the opening side flange portion C1 of the male hook 3-1.
- An easily peelable plastic layer A is provided in advance on the surface of the tip of the projection 5-1 and the flange portion C2 on the opening side of the female hook 3-2. It is preferable that the surface portion of the flange portion C2 facing the protrusion 5-1 is concaved in a U-shape, so that stable bonding can be achieved.
- the plastic chuck of this embodiment has a gap a between the top of the male claw 3-1 and the bottom of the female claw 3-2, and the flange portion of the female claw 3-2 and the male claw.
- the gap / 3 is required, and the gap a or j8, which is the force vj, and the smaller value is the smaller of the claw inclination heights X and y shown in Fig. 4 (b).
- the larger the gap the larger the gap (X and ⁇ are not important.
- the gap ⁇ is larger than the smaller of the inclination heights X and y of the claws. If j8> ⁇ , ⁇ > ⁇ > (either vj or ⁇ , y)
- the ultrasonic horn H-1 and the anvil AV are used when the easily peelable plastic layer A is melted by the ultrasonic welding device to bond the protrusion 5-1 and the opening side flange portion C-2.
- the flexible projection 5-1 and the female claw 2-2 come in contact with each other before the other parts. Therefore, the gap ⁇ needs to be smaller than both ⁇ and
- the empirical force of either X or y, vj, and the value in either case is in the range of 0.05H-0.15H, so the spacing L is
- the protrusion 5-1 has flexibility
- the distance between the ultrasonic horn H-1 and the anvil AV-1 is L
- the welding depth is L- ( H-)
- the error in the thickness of the chuck directly affects it, and the fluctuation due to this error causes the sliding resistance to change.
- the separation by the slider is not stable.
- the force of the state in which the easily peelable resin is melted by ultrasonic waves may be peeled off (floating) depending on conditions during the cooling and solidification, so that there is a disadvantage that the probability of maintaining the hermeticity is poor.
- the projection 5-1 is provided on the opening side flange portion C2 of the female claw 3-2, and the tip has flexibility, and its flexible length (The length that the protrusion can move radially) is ⁇ .
- the tip of the projection 5-1 is in contact with the open-side flange C1 of the facing male hook 3-1 in a radial state toward the contents, and an easily peelable plastic layer ⁇ is previously formed on the surface of each location. It is set up.
- Other points are the same as those in FIG. 6 (a).
- a constant interval L should be maintained within the range of the above inequality (7).
- no special restrictions are required on the width or length of the ultrasonic horn H-1 or anvil AV-1.
- Fig. 6 (c) is different from Fig. 6 (b) in that the flexible projection 5-1 is provided on the content side flange portion C4 of the female claw 3-2.
- the other powers are the same.
- two flexible projections 5-1-1-1 and 5-1-2 are respectively formed on the opening side flange portion C1 of the male hook 3-1, and the female hook 3 —2 is provided facing the opening side flange portion C 2, one end of which has a convex shape and the other has a concave shape, and the easily peelable plastic layer A is provided on each surface.
- the force and other points that differ from Fig. 6 (b) are the same.
- the tips of the projections are concave and convex, as shown in Fig. 6 (d), and are stable even with ultrasonic vibration. To make contact.
- a constant interval L should be maintained within the range of the above inequality (7).
- the protrusions provided on the engagement portions Alternatively, when the protrusion provided on the flange portion on the contents side or the opening side is adhered to the flange portion or the like via an easily peelable plastic layer while being radiused toward the contents side, the contents side of the bag is reduced. Since the adhesive part is not easily peeled off by the force of the force, the liquid contents and the like do not leak due to the internal pressure. Furthermore, since it is easy to peel off from the opening side, when the opening is made by the slider, the opening of the slider can be easily made without increasing the movement of the slider.
- the ultrasonic horn is moved within a sufficiently wide error range. Therefore, even if the width of the bag is long, the male claw side portion and the female claw side portion via the easily peelable plastic layer can be easily separated using a batch-type general-purpose ultrasonic welding device. By bonding, a highly airtight plastic chuck is obtained.
- FIG. 7 is a cross-sectional view of an embodiment in which slider mounting projections G-1, G-2 are provided on the opening-side flange portions of the male hook and the female hook of the plastic chuck.
- the shape of the engaging portion of the plastic chuck of Fig. 7 is the same as that shown in Figs. 3 (a) and 3 (b), and the engaging portion is welded through the easily peelable plastic layer A-2. , The maximum height H in the engaged state.
- Projections G-1, G-2 are provided on the open side flange portion C1 of the male hook 1-1 of the plastic chuck and the open side flange portion C2 of the female hook 1-3, respectively.
- the tip of the projection G-1 is convex, the tip of the projection G-2 opposite to it is concave, the two projections keep a distance ⁇ , and the tip of the projection G-1 has flexibility,
- An easily peelable plastic layer ⁇ ⁇ is provided on the surface in advance.
- the flexible length of the tip of the projection G-1 (the length that the projection can move radially) is ⁇ .
- a method of bonding the two projections G-1 and G-2 via an easily peelable plastic will be described.
- the engagement portion of the plastic chuck is welded as described above.
- the projections G-1 and G-2 on the plastic clutch with the engagement portion welded are placed between the ultrasonic horn H-1 and the anvil AV-1 held at a fixed interval L. Pinch.
- the engaged plastic chuck is moved in the longitudinal direction of the plastic chuck while keeping the frequency and amplitude of the ultrasonic wave constant to melt the easily peelable plastic layer A on the surface of the projection G-1.
- the protrusions G-1, G-2 can be continuously bonded in the longitudinal direction of the plastic chuck via the easily peelable plastic layer A.
- the bonding strength (peeling strength) of the bonding portion can be adjusted.
- the tips of the protrusions G-1 and G-2 have irregular shapes, and the force for stably bonding to ultrasonic vibration is limited to this shape. It is not something to be done.
- the projections G-1 or G-2 In order to bond the projections G-1 and G-2 in a stable state by ultrasonic waves, the projections G-1 or G-2 have flexibility.
- the tip of the projection G-1 is assumed to have flexibility.
- the projection may have flexibility as a whole.
- the highly airtight plastic chuck of the present invention it is convenient to mount a slider and to peel off the adhesion by the easily peelable plastic layer by the slider.
- a female claw as shown in FIG. 3 or FIG. 4
- an adhesive with an easily peelable plastic layer is applied to the inside of the female claw, and when the slider is moved from the closed position to the open position, the claw is moved. As a result, the bonded portion is peeled off and the package is opened.
- FIG. 8 shows a bra with a slider according to the present invention.
- FIG. 9 (a) is a cross-sectional view corresponding to a section A in FIG. 8
- FIG. 9 (b) is a schematic perspective view of a bag body (a plastic chuck portion) provided with a stick chuck.
- 9 is a sectional view corresponding to the section taken along line BB 'of FIG.
- the slider S When the slider is mounted on the plastic chuck of the present invention in a sealed state, the slider S is positioned at a position where the chuck of the bag with the chuck is fully closed (referred to as a closed end of the chuck and represented by E1 in Fig. 8). It is attached.
- the plastic chuck is opened only when a consumer takes out the contents of the bag with the chuck provided with the plastic chuck according to the present invention at the opening. That is, the slider is moved by moving the slider S from the closed end E1 of the chuck along the chuck to open the chuck, and the slider S is moved to a position where the chuck in the bag with the chuck opposite to the closed end of the chuck is fully opened (the opening of the chuck). It is opened until it reaches the edge (represented by E2 in Fig. 8).
- the structure of the slider S will be briefly described with reference to FIG.
- the top surface of the slider S has a rectangular shape, and an opening post S5 hangs from one end of the top surface (the left end in FIG. 8).
- a wedge-shaped opening guide S2 with a sharp S1) is supported at the lower end of the opening support S4 in parallel with the top surface.
- a groove S4 is formed above the opening guide S2 of the slider S in parallel with the opening guide S2, and a lid S3 covering the opening of the connection groove S4 is formed from the opening post S4 through the opening guide S2. Is provided up to the upper surface of
- the plastic chuck of the present invention shown in this embodiment has a continuous pressing rib 14 and, in a sealed state, a female claw 1-3-1 on the open side.
- a female claw 1-3-1 On the open side.
- protrusions GF-1 and GM-1 which can be engaged with each other are provided at the distal ends of the opening side flange portions C1 and C2 in the same manner as in the embodiment shown in FIG. 3 (d).
- the slider guide projections G-1 and G-2 are used.
- the tip S1 of the opening guide S2 is located between the female hook 13-1 on the opening side and the pair of slider guide projections G-1, G-2. .
- the distal end portion S1 of the opening guide S2 does not deform the opening-side flange portions C1 and C-2 of the chuck having a small width.
- the inner wall of the upper part S3 of the slider is not in contact with the slider guide projections G-1, G-2 of the chuck.
- the groove S4 provided in the upper part S3 of the slider S causes the slider projection G— 1, G—2 is constrained, and the plate portion S2 of the opening guide pushes and expands the flange portions C1, C—2 on the opening side.
- the bonded portion of the chuck with the easily peelable plastic layer A is peeled off, the engagement of the male and female hooks is released, and the chuck is opened.
- FIG. 9 (e) is a cross-sectional view illustrating a structure for nullifying the opening force of the opening guide of the slider S located at the closing end E1 of the chuck, and is located at the closing end E1 of the chuck.
- the slider S is sectioned at the position BB ′ in FIG. 8 as in FIG. 9 (b). That is, when the slider S is located at the closing end E1 of the chuck, slits SL—1, SL— are formed in the opening flange portions C1, C-2 of the chuck corresponding to the opening guide S2 of the slider S. 2 is provided.
- the slits SL-1 and SL-2 extend the flanges C1 and C2 on the opening side, nullifying the opening force of the opening guide S-2, and accidentally engaging the chuck with the opening guide S2 at the opening end of the chuck. Can be prevented from being unraveled.
- FIG. 9 (c) is a cross-sectional view similar to FIG. 9 (a) showing a state in which the slider is mounted on another plastic chuck of the present invention in a sealed state
- FIG. () Is a sectional view similar to FIG. 9 (b) of this embodiment.
- the protrusion 5-1 provided on the opening side flange portion C2 near the female hook is welded to the opposite flange portion C1 by the easily peelable plastic layer A. It was done.
- a projection is provided on the opening side of the engaging portion.
- the protrusion may be provided and the protrusion and the portion facing the protrusion may be welded.
- a slider may be used as a method for peeling off the welded portion and a method for opening and closing the engagement portion, or may be performed manually without using a slider.
- a slider dedicated to closing may be provided, opened by hand, and closed by the slider.
- the plastic chuck according to the present invention is usually employed for the outlet of the bag as described in the background art. If a bag with a plastic zipper attaches special importance to internal pressure resistance (the property that it does not open even if the pressure inside the bag rises), for example, the zipper itself, such as a plastic with a slider disclosed in Patent Documents 14 to 14, is disclosed. However, it is preferable to use a material having a large opening strength from the contents side. Engage with such a chuck as in the present invention Addition of adhesive with easily peelable plastic at or near the part not only provides sealing performance, but also adds the adhesive force of easily peelable plastic to the internal pressure resistance of the chuck itself, further increasing the internal pressure resistance. .
- the pressure on the bag-side force is one at the location of the engagement portion of the chuck. Since the received pressure is only transmitted to the adhesive portion on the opening side, the plastic chuck of the present invention also has high internal pressure resistance.
- the protrusion is provided on the content side of the engagement portion of the chuck, and the protrusion and the flange portion are adhered by the easily peelable plastic.
- the pressure is applied directly to the adhesive. Therefore, it may be used for a bag that does not emphasize internal pressure resistance.
- the inner pressure resistance is higher when the protrusions are bent toward the contents side of the bag and are in contact with the flange on the contents side than when the protrusions are bent toward the opening side. .
- the sealability of the plastic chuck that can be mounted on the slider is ensured by the easily peelable plastic layer. This is because the shelf life of the contents of a product in which the contents are filled in a bag with a plastic chuck with a slider is filled. Is very important in assuring.
- a plastic layer having a peel strength of 0.6 kgfZl5 mm or less as measured by the method of JIS Z0238 is generally called an easily peelable plastic layer, and the peel strength varies depending on the heat sealing temperature.
- general-purpose easily peelable plastics for example, those disclosed in JP-A-5-214228 and JP-A-10-204413
- the peel strength is 0 even when the heat sealing temperature changes by 30-40 ° C. It is designed so that it changes only by about 5kgfZl5mm (hereinafter these are called general-purpose easily peelable plastics). Therefore, when heat-sealing with a general-purpose easy-peeling plastic, stable peel strength can be maintained even if the heat-sealing temperature slightly changes.
- Such general-purpose easily peelable plastics can be used in the present invention.
- a resin that cannot be used as an easily peelable plastic for example, a resin that has a large change in peel strength difference of kgfZl5mm at a temperature change of 20 ° C, and has a peel strength of 0.6kgfZl5mm, which is within the range of easy peeling). Hold Therefore, even if the heat sealing temperature needs to be controlled to 104 ° C. ⁇ 0.3 ° C. (a resin), it can be used as the easily peelable plastic layer of the present invention. Even when such a resin is used, stable peel strength can be maintained. Although the reason is not clear, it is likely that the structure of the chuck limited by the present invention stabilizes the heat generation condition by the ultrasonic vibration.
- the engaging portion is welded!
- the tape-shaped chuck T in which the engaging portion is engaged is pulled out from the reel 6-1 and passed through the ultrasonic portion via the tension roll 6-2. That is, after controlling the tension of the tape-shaped check T to be constant, the tape is passed between the ultrasonic horn H-1 and the anvil AV-2 with a constant interval L as illustrated in FIGS. .
- the ultrasonic horn H-1 is connected to the booster B and the converter C via the connection H-2, whereby ultrasonic vibration of a constant frequency and amplitude is transmitted to the ultrasonic horn H-1.
- the adjustment of the adhesive strength of the chuck is basically performed by changing the moving speed of the chuck tape while keeping the output of the ultrasonic vibration constant. It does not deny adjusting the output of the vibration.
- the anvil AV-1 can finely adjust the distance (Figure 2) between the ultrasonic horn H-1 and the anvil AV-2 by the fine height adjustment section AV-2, and the distance L is determined by the chuck design. Use a thickness gauge or the like to adjust the distance beforehand.
- the chuck passing between the ultrasonic horn H-1 and the anvil AV-2 is taken up at a constant speed by the bow I take-up roll 6-3. Heat generated by ultrasonic vibration between the ultrasonic horn H-1 and the anvil AV-2 melts the easily peelable plastic layer, and the engaging portion of the plastic chuck is moved in the longitudinal direction of the chuck through the easily peelable plastic.
- the tape-shaped plastic chucks which are continuously welded are wound on a reel 6-5 via a dancer roll 6-4.
- a maximum value or a minimum value may be generated instead of a simple right-down curve depending on the shape of the engaging portion. This is thought to be due to a change in the speed at which the position of the peeling start point changes and a change in the adhesive strength at that position, resulting in a maximum or minimum value. Bonding at a speed near the minimum value or maximum value makes it easier to maintain a stable opening strength.
- the economy of continuous welding will be described in comparison with a general-purpose batch-type ultrasonic welding apparatus.
- the batch-type bonding described here is a method in which bonding is divided into one or more times and performed discontinuously.
- factors involved in the welding control are (1) frequency and amplitude adjustment, (2) adjustment of ultrasonic application time, and (3) Adjustment of moving speed of ultrasonic horn, (4) Adjustment of moving distance of ultrasonic horn, (5) Adjustment of compressive force between ultrasonic horn and anvil, (6) Ultrasonic horn according to bag length
- factors that determine the size and the state of bonding such as changing the shape of the power supply, boosters, and converters.
- a general-purpose batch-type ultrasonic welding machine has the advantage that it can bond various objects, but it has the disadvantage that the cost is high and the productivity is low.
- the continuous welding of the present invention (1) the welded portion is continuous over a long distance, (2) the area and the peel strength of the welded portion are stable, (3) Excellent productivity due to continuous welding. (4) Even though continuous operation, the main parts of the bonding equipment do not include rotating parts, so there is no cost for maintaining and maintaining accuracy. , (5) Batch ultrasonic welding Unlike equipment, there is no need for equipment to control the frequency, adjust the operating time, and control the ultrasonic horn stop position and moving speed distribution, etc.The ultrasonic equipment requires only an oscillator unit, and The advantage is that the cost of the sonic equipment is greatly reduced.
- FIGS. 10 and 11 A process of attaching an example of the embodiment of the present invention to a bag will be described with reference to FIGS. 10 and 11.
- the continuous tightening wall 1-2 is inside one claw 11 and the surface is easily peelable resin A inside the other claw 13 2.
- a tape-shaped plastic chuck having projections G-1, G-2 on flanges C1, C2 on the opening side of the claw, respectively, having continuous pressing ribs 14 as Unrolls from roll 6-1 in Fig. 10.
- a plastic chuck C engaged with the ultrasonic horn H-1 and the anvil AV-1 held at a constant interval L was sandwiched, and the frequency and amplitude of the ultrasonic wave were kept constant.
- the chuck is moved in the longitudinal direction of the chuck using the take-off roll 6-3 whose speed is controlled.
- the easily peelable plastic layer is melted by the ultrasonic vibration, the continuous tightening wall and the continuous pressing rib are welded through the easily peelable plastic layer, and the highly airtight chuck of the present invention is continuously produced. — Rewinded to 5.
- the highly airtight chuck wound around the rolls 6-5 is set on the chuck roll X2 in Fig. 11 (a).
- the film constituting the bag unwound from the film roll XI is half-folded by a triangular plate X3 and then supplied to a bag making machine via a dancer roll X4.
- the highly airtight chuck is unwound from the chuck roll X2 and is set at a predetermined position of the bag film, and then the contents side flange portion of the chuck is welded to the bag film by heat sealing machines X5 and X6.
- a predetermined position of the closed end of the chuck is subjected to opening prevention processing such as a notch by a chuck closed end controller X7, and the end of the chuck is point-sealed by an ultrasonic heat sealing machine X9. Attach the slider to the position where the opening prevention processing has been performed with the automatic attachment device X8. At this time, the slider is supplied from the slider automatic supply device X81. Subsequently, the end portion of the chuck and the film portion of the bag body are heat-sealed at right angles to the chuck by the vertical heat sealing machine X10, and the heat seal portion at the end of the chuck is cut by the guillotine cutter XI2 to obtain a product. Slider whose joint is welded through easily peelable plastic Can produce a bag XI 3 with high airtightness.
- the vertical heat sealing machine X10 and the guillotine cutter XI 2 may not be used, and a fusing seal machine may be used at the position of the guillotine cutter XI 2 instead.
- FIG. 11 (b) shows a mode in which the slider mounting order of the mode illustrated in FIG. 11 (a) is changed.
- the highly airtight chuck of the present invention is wound around a roll 6-5 by the process shown in FIG. 10 using the chuck as shown in FIGS. 3 (a) and 3 (b). This roll 6-5 is set on the chuck roll W2 in FIG. 11 (b).
- the highly airtight chuck is fed out from the chuck roll W2, and subsequently, a predetermined position of the closed end of the chuck is subjected to opening prevention processing such as a notch in the chuck closed end force purifier W7, and the ultrasonic heat sealing machine W9 is used.
- opening prevention processing such as a notch in the chuck closed end force purifier W7, and the ultrasonic heat sealing machine W9 is used.
- attach the slider to the position where the opening prevention processing has been performed with the automatic slider mounting device W8.
- the slider is supplied from the slider automatic supply device W81.
- a highly airtight chuck with a tape-like slider to which the engaging portion is continuously welded via the easily peelable plastic is obtained.
- the film constituting the bag unwound from the film roll W1 is folded in half by the triangular plate W3 and supplied to the bag making machine via the dancer roll W4.
- the heat sealing machines W5 and W6 are used. Weld to. Subsequently, the end portion of the chuck and the film portion of the bag are heat-sealed at right angles to the chuck by a vertical heat seal machine W10, and then the heat seal portion at the end of the chuck is cut by a guillotine cutter W12. It is possible to produce a bag W13 with a highly airtight chuck with a slider in which the joint is welded through an easily peelable plastic.
- the bag with a slider and a highly airtight chuck manufactured in Figs. 11 (a) and 11 (b) does not contain the contents inside the bag, but the unsealed portion of the bag, For example, when only one of the flanges corresponding to the pair of engagement portions is welded (sealed) to the film. It is only necessary to store the contents of the other flange that is not welded (sealed) and the force, and then seal that location.
- a protrusion at the top of the chuck is welded with an easily peelable plastic to prevent unauthorized opening using a heat seal bar intermittently, or sealed with a labeler Y11.
- the installation position of the vertical heat sealing machine Y12 is not limited to the position shown in Fig. 12, but may be located between the ultrasonic heat sealing machine # 9 and the automatic slider mounting device # 8.
- the film constituting the bag unwound from the film roll VI is half-folded by the triangular plate V3, and then supplied to the bag making machine via the dancer roll V4.
- the highly airtight chuck is unwound from the chuck roll V2, and is set at a predetermined position on the film. Then, the chuck is welded to the film using heat sealing machines V5 and V6.
- the projections G-1 and G-2 on the opening side of the chuck welded to the film were positioned so as to be located between the ultrasonic horn of the ultrasonic welding device V7 and the anvil. Send the film intermittently.
- the ultrasonic horn intermittently moves up and down in the vertical direction with respect to the bag check, and when the ultrasonic horn is at the lowest position, the distance from the ambill is L, When it is in the position, it is set to keep the interval of twice the maximum thickness H of the chuck.
- the projections G-1 and G-2 on the opening side of the chuck to which the engagement portions are bonded are bonded by melting the easily peelable plastic layer A.
- This welding is performed intermittently. More specifically, the mark printed on the film is read by a photoelectric tube, and the ultrasonic horn is intermittently moved up and down at a predetermined position according to a predetermined length. Then, the distance between the anvil and the ultrasonic horn is set to 2H, and the projections are not welded to each other. At other positions, the distance between the anvil and the ultrasonic horn is set to L, and the protrusions are welded to each other. At this time, the distance L between the anvil and the ultrasonic horn when the ultrasonic horn is at the lowest position is adjusted according to the moving speed of the bag making machine so as to obtain an appropriate peel strength.
- a predetermined position of the closed end of the chuck is subjected to opening prevention processing such as a notch by a chuck closed end controller V8, and the end of the chuck is point-sealed by an ultrasonic heat sealing machine V9. Attach the slider to the position where the opening prevention processing has been performed with the automatic attachment device V10. At this time, the slider is supplied from the slider automatic supply device V101.
- This chuck has a pair of male and female hooks formed on the surface of a tape-shaped plastic film F made of linear low-density polyethylene (L LDPE), and the hooks are formed inside the male hooks 1-1.
- a parallel continuous tightening wall 1-2 is provided, and a continuous pressing rib 14 parallel to the claw is provided inside the female claw 1-3.
- the surface of the continuous pressing rib 14 is made of an ethylene-vinyl acetate copolymer (EVA) based material, and the peel strength when bonded at 104 ° C is 0.6 kgfZl5 mm (measured by the method of jIS Z0238).
- Exfoliated plastic resin layer A-2 is formed.
- the opening width 7? Of the female claw was 1.5 mm, and the width 7? Of the base of the pressing rib was 0.4 mm.
- the height H of the plastic chuck when the plastic chuck is engaged (the state shown in Fig. 3 (b)) and the engaging portion is not welded is 2. Omm, chuck width r? Is 3. Omm, H direction flexible range is up to 0.3mm
- the opening strength means the male and female flanges of the plastic chuck cut to 5 cm.
- the unit was connected to a tensile force measuring device to measure the tensile force required to open the chuck.
- the unit was kgfZ5cm). As a result, the average value was 1.14 kgfZ5cm and the standard deviation was 0.30kgfZ5cm.
- the distance L between the ultrasonic horn H-1 and the anvil AV-2 was adjusted to 1.9 mm by the fine height adjustment section AV-2. Hold the engaged portion of the plastic chuck in the engaged state between the acoustic horn H-1 and the anvil AV-1. At this time, the distance between the slide guides SG-1 and SG-2 was set to 3.2 mm, and the position was determined so that the center line of the ultrasonic horn and the center line of the continuous pressing rib 14 of the chuck overlapped.
- the length Lh of the ultrasonic horn H-1 was 50 mm and the width Wh was 5. Omm, while the length La of the anvil AV-1 was 30 mm and the width Wa was 1.4 mm.
- a device for welding the engaging portion of the chuck one as shown in Fig. 10 was used.
- the above-mentioned tape-shaped plastic chuck is prepared on the reel 6-1, and the ultrasonic vibration set at a frequency of 40 KHz and an amplitude of 40 m is continuously applied to the ultrasonic horn, and the interval L is set to 1.9 mm as described above.
- the plastic chuck engaging portion is continuously welded in the longitudinal direction of the chuck by the easily peelable plastic.
- the plastic chuck with the welded engagement portion was taken off at a constant speed by a roll 6-3 with a take-up speed adjuster SC, and wound up on a reel 6-5 via a dancer roll 6-4.
- the take-up speed of the take-off roll 6-3 was set at three levels of 10mZ, 20mZ, and 40mZ, and each was adhered at 200m. Fifteen samples of 5 cm each were randomly sampled from each chuck, and the presence or absence of adhesion of the chuck engaging portion was evaluated based on the opening strength on the opening side (unit: kgfZ5 cm).
- the opening strength at the time of the take-off speed force of OmZ was 2.14 kgfZ5 cm on average, and the standard deviation was 0.47 kgfZ5 cm. Further, after the welded portion was peeled off and the opened chuck was re-engaged, the opening strength on the opening side was measured again. The average value was 1.16 kgfZ5 cm and the standard deviation was 0.33 kgf / 5 cm.
- the opening strength was 4.33 kgf / 5 cm on average, and the standard deviation was 0.75 kgfZ5 cm. Furthermore, after the welded portion was peeled off and the opened chuck was re-engaged, the opening strength on the opening side was measured again. The average value was 1.15 kgfZ5 cm and the standard deviation was 0.31 kgf / 5 cm.
- the opening strength at a take-off speed of 10 mZ was an average value of 2.69 kgf / 5 cm and a standard deviation of 0.74 kgfZ5 cm. After the welded part was peeled off and the opened chuck was re-engaged, the opening side was re-engaged. When the opening strength was measured, the average value was 1.14 kgfZ5 cm and the standard deviation was 0.30 kgfZ5 cm.
- the continuous tightening wall and the continuous pressing rib were bonded to each other via the easily peelable plastic layer. Furthermore, when the moving speed is 40 mZ, the area of the adhesive is small. When the moving speed is 20 mZ, the bonding area is larger than when the moving speed is 40 mZ.When the moving speed is 10 mZ, the bonding area is larger than when the moving speed is 20 mZ. Was increased by about 30%.
- the continuous tightening wall is formed via the easily peelable plastic layer.
- the continuous pressing rib were determined to be continuously bonded in the longitudinal direction of the chuck.
- the reason why the average opening strength of the chuck is smaller than that of 20mZ even though the bonding area is large in the case of 10mZ is that the peeling start part is observed with a microscope at 10mZ. Since the peel angle at the starting point was smaller than that at 20 mZ, it was thought that this was not because the peel strength at the peeling starting point was lower at 10 mZ than at 20 mZ! / ⁇ .
- bags each having an upper hermetic chuck were prepared.
- This bag is made of a laminated film made by dry laminating L LDPE finolem with inner material and polyamide film of outer layer J ⁇ ko 15 ⁇ , and it is a flat bag with a size of 140mm width x 200mm height and bottom open slider.
- a total of 45 bags were created, each consisting of 15 bags.
- the slider is a slider (slider) of the type previously disclosed by the present inventor in Patent Document 8 (WO 03/022697 A1). That is, the upper half of the slider is attached, and the opened part is closed and the slider is assembled so that the slider is assembled. And attached to the chuck in the open state.
- the bag was filled with 500 cc of water from the lower part, and the lower part was heat-sealed. After measuring the weight of each bag, the chuck was positioned downward and left for 30 days. Water leakage did not occur from any bag, and the weight of the bag changed. It was determined that the chuck to which the engaging portion was welded had a sealing function.
- the highly airtight plastic chuck of the present invention has high airtightness and also has an opening detection function, food, medicine, and electronic parts that require high airtightness and prevention of illegal foreign matter entry are provided. It can be applied to a wide range of resealable outlets in packaging bags such as.
- FIG. 1 is a perspective view of an example of an ultrasonic welding device used for manufacturing the plastic chuck of the present invention.
- FIG. 2 is a cross-sectional view of the device shown in FIG. 1, taken along line A-, showing a state where an embodiment of the plastic chuck of the present invention is held.
- the hatching for showing the cross section is partially omitted.
- FIG. 3 (a)-(e) are cross-sectional views showing examples of various shapes or states of the plastic chuck of the present invention.
- the hatching for showing the cross section is omitted, and the hatched portions indicate the locations where the easily peelable plastic layer is provided.
- the plastic chuck shown in FIG. 3 has a continuous pressing rib inside the female hook, and the continuous pressing rib and a portion opposed thereto are welded.
- FIG. 4 (a)-(f) shows examples of various shapes or states of the plastic chuck of the present invention.
- FIG. The hatching for showing the cross section is omitted, and the hatched portions indicate the locations where the easily peelable plastic layer is provided.
- the plastic chuck shown in Fig. 4 has male and female claws, which are welded inside the female claws.
- FIG. 5] (a)-(g) are cross-sectional views showing examples of various shapes or states of the plastic chuck of the present invention.
- the hatching for showing the cross section is omitted, and the hatched portions indicate the locations where the easily peelable plastic layer is provided.
- the plastic chuck shown in Fig. 5 is of the type that is welded to the opposite flange on the outer surface of the engaging part.
- FIG. 6 (a)-(d) are cross-sectional views showing examples of various shapes or states of the plastic chuck of the present invention.
- the hatching for showing the cross section is omitted, and the hatched portions indicate the locations where the easily peelable plastic layer is provided.
- the plastic chuck shown in FIG. 6 is of a type in which a projection provided in the vicinity of an engaging portion and a flange portion facing the same are welded.
- FIG. 7 is a sectional view of still another embodiment of the present invention, in which a projection at an open end is welded.
- the hatching for showing the cross section is omitted, and the hatched portions indicate the locations where the easily peelable plastic layer is provided.
- FIG. 8 is a schematic perspective view of a bag body (plastic chuck part) provided with a plastic chuck with a slider according to the present invention.
- FIG. 9 is a cross-sectional view of a plastic chuck with a slider according to the present invention, wherein (a) is a cross-sectional view corresponding to a ⁇ - ⁇ ′ cross-section in FIG. 8, and (b) is a ⁇ -B ′ cross-section in FIG. (C) is a cross-sectional view similar to (a) showing a state in which the slider is mounted on another plastic chuck of the present invention, and (d) is a cross-sectional view of this embodiment. It is sectional drawing similar to b).
- (E) is a cross-sectional view illustrating a structure for nullifying the opening force of the opening guide of the slider S located at the closed end of the chuck.
- FIG. 10 is a view showing a step of continuously bonding an engaging portion of a tape-shaped plastic chuck in the longitudinal direction of the chuck using ultrasonic vibration according to the method of the present invention.
- FIGS. 11 (a) and 11 (b) are process diagrams showing another embodiment of the process of attaching the plastic chuck of the present invention to a bag.
- Fig. 12 is a view showing a process of incorporating a highly airtight chuck with a slider in which an engaging portion of the present invention is welded through an easily peelable plastic and continuously performing bag making including filling of contents. .
- Fig. 13 is a view showing a process of intermittently performing bag making and welding of the projection portion by incorporating the highly airtight chuck of the present invention in which the easily peelable plastic layer is provided at the slider projection portion.
- Fig. 14 is a partial cross-sectional perspective view showing a conventional example of a plastic chuck with a slider having an opening detection function.
- FIG. 15 is a sectional view taken along the arrow A— of FIG. 14.
- Fig. 16 is a partial cross-sectional perspective view showing another conventional example of a plastic chuck with a slider having an opening detection function.
- FIG. 17 is a sectional view taken along the line BB ′ in FIG. 16.
- FIG. 18 is a partial cross-sectional perspective view showing still another conventional example of a plastic chuck with a slider having an opening detection function.
- FIG. 19 is a partial cross-sectional perspective view showing another conventional example of a plastic chuck with a slider having an opening detection function.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Slide Fasteners (AREA)
- Making Paper Articles (AREA)
- Bag Frames (AREA)
- Package Closures (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE602004016548T DE602004016548D1 (de) | 2003-11-21 | 2004-11-11 | T hoher luftdichtheit |
US10/580,233 US7871481B2 (en) | 2003-11-21 | 2004-11-11 | Method for producing a hermetic plastic zipper and a hermetic plastic zipper |
JP2005515586A JP4589235B2 (ja) | 2003-11-21 | 2004-11-11 | 高気密性プラスチックチャックの製造方法および高気密性プラスチックチャック |
EP04818860A EP1685773B1 (en) | 2003-11-21 | 2004-11-11 | Production method for high-air-tightness plastic chuck and high-air-tightness plastic chuck |
US12/952,581 US8302268B2 (en) | 2003-11-21 | 2010-11-23 | Method for producing a hermetic plastic zipper and a hermetic plastic zipper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-392350 | 2003-11-21 | ||
JP2003392350 | 2003-11-21 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/580,233 A-371-Of-International US7871481B2 (en) | 2003-11-21 | 2004-11-11 | Method for producing a hermetic plastic zipper and a hermetic plastic zipper |
US12/952,581 Division US8302268B2 (en) | 2003-11-21 | 2010-11-23 | Method for producing a hermetic plastic zipper and a hermetic plastic zipper |
Publications (1)
Publication Number | Publication Date |
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WO2005048763A1 true WO2005048763A1 (ja) | 2005-06-02 |
Family
ID=34616445
Family Applications (1)
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PCT/JP2004/016725 WO2005048763A1 (ja) | 2003-11-21 | 2004-11-11 | 高気密性プラスチックチャックの製造方法および高気密性プラスチックチャック |
Country Status (7)
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US (2) | US7871481B2 (ja) |
EP (1) | EP1685773B1 (ja) |
JP (1) | JP4589235B2 (ja) |
CN (2) | CN101342960B (ja) |
AT (1) | ATE407586T1 (ja) |
DE (1) | DE602004016548D1 (ja) |
WO (1) | WO2005048763A1 (ja) |
Cited By (2)
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WO2007032093A1 (ja) | 2005-09-13 | 2007-03-22 | Juichi Kasai | 不正開封防止機能付きプラスチックチャック、その製造方法および製造装置 |
EP2338805A1 (en) | 2009-12-24 | 2011-06-29 | Juichi Kasai | A plastic bag body having a plastic zipper with a slider equipped therewith and added thereto a preventive function against unfairly unsealing, and method for manufacturing the same |
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- 2004-11-11 DE DE602004016548T patent/DE602004016548D1/de active Active
- 2004-11-11 EP EP04818860A patent/EP1685773B1/en not_active Not-in-force
- 2004-11-11 CN CN2008101298949A patent/CN101342960B/zh not_active Expired - Fee Related
- 2004-11-11 CN CNB2004800342253A patent/CN100434010C/zh not_active Expired - Fee Related
- 2004-11-11 AT AT04818860T patent/ATE407586T1/de not_active IP Right Cessation
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007032093A1 (ja) | 2005-09-13 | 2007-03-22 | Juichi Kasai | 不正開封防止機能付きプラスチックチャック、その製造方法および製造装置 |
EP2338805A1 (en) | 2009-12-24 | 2011-06-29 | Juichi Kasai | A plastic bag body having a plastic zipper with a slider equipped therewith and added thereto a preventive function against unfairly unsealing, and method for manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
CN100434010C (zh) | 2008-11-19 |
EP1685773A4 (en) | 2007-02-14 |
JPWO2005048763A1 (ja) | 2007-10-04 |
ATE407586T1 (de) | 2008-09-15 |
JP4589235B2 (ja) | 2010-12-01 |
US20070130733A1 (en) | 2007-06-14 |
CN1882261A (zh) | 2006-12-20 |
US7871481B2 (en) | 2011-01-18 |
US20110103717A1 (en) | 2011-05-05 |
CN101342960B (zh) | 2012-01-04 |
DE602004016548D1 (de) | 2008-10-23 |
EP1685773A1 (en) | 2006-08-02 |
CN101342960A (zh) | 2009-01-14 |
EP1685773B1 (en) | 2008-09-10 |
US8302268B2 (en) | 2012-11-06 |
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