CA2045171A1 - Tape restraint for use with wrapper sealing anvil - Google Patents

Tape restraint for use with wrapper sealing anvil

Info

Publication number
CA2045171A1
CA2045171A1 CA002045171A CA2045171A CA2045171A1 CA 2045171 A1 CA2045171 A1 CA 2045171A1 CA 002045171 A CA002045171 A CA 002045171A CA 2045171 A CA2045171 A CA 2045171A CA 2045171 A1 CA2045171 A1 CA 2045171A1
Authority
CA
Canada
Prior art keywords
anvil block
anvil
horizontal component
frame
frame means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002045171A
Other languages
French (fr)
Inventor
Lawrence L. Leino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FMC Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2045171A1 publication Critical patent/CA2045171A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/16—Applying or generating heat or pressure or combinations thereof by rotary members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
    • B65B65/06—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details coated or treated with anti-friction or anti-sticking materials, e.g. polytetrafluoroethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
A sealing bar anvil that utilizes a nonstick tape on the anvil to preclude the sticking of molten film to the anvil.

Description

TAPE RESTRAINT FOR USE ~ITH WRAPPER SEALING ANVIL

Backnround of the Invention This invention has to do with article wrapping machines of the type that fo~ms a tube of film around articles being wrapped and at a subse~uent station the tube is sealed and severed between the articles. More specifically this invention has to do with an improved sealing bar anvil that utilizes a nonstick tape on the anvil to preclude the sticking of molten film to the anvil.
Summary of the Invention An anvil is provided having a base member which supports a cushion surface. The cushion surface is covered with a strip of nonstick material that is maintained in location by restraints that prevent the strip material edges from being 1006ened from engagement with the cushion surface.
Brief DescriPtion of the Drawinq Fiqures An understanding of this invention will be easily gleaned from a reading of this specification coupled with a perusal of the drawing figures wherein:
Fig. 1 is a presentation of a sealing head mechanism showing the general environment of the invention;
Fig. 2 is a cross sectional view of a portion of the invention;
Fig. 3 is a cross sectional view of an assembled anvil showing the instant invention.
Detailed DescriPtion of the Invention Fig. I shows the general environment of the invention, that being in a sealing head generally 10 having a seal bar 12 that will interact with a seal bar anvil 14 in a well known manner. The invention has to do with the construction. form and surface of the seal Z045'~

bar anvil 14. This anvil is rotated into contact with the seal bar 12 at a high production speed in order to seal a tube of film surrounding a product such as 16.
The seal is a heat seal where the tube of film is S captured between the seal bar 12 and the seal bar anvil 14. The short duration when the heated seal bar 12 is in contact with the anvil is adequate to fuse the film together and thus provide a sealed end on the package.
The quality of such a seal is very important particularly in the sealing of foodstuff packages. The seal must be continuous and strong. Ideally the seal will be "water tight~ and will not fail before the adjacent unheated film.
In production it has been found that the heat of the seal bar will cause the accumulation of melted film on the seal bar anvil. Such an accumulation is detrimental to forming good seals thus it has been found that by providing a nonstick surface on the anvil surface contacting the heated seal bar production runs of seals can be made without the accumulation of film debris on the anvil.
One application of applying a nonstick surface to a seal bar anvil entails the use of nonstick tape tone side having an adhesive) on the anvil. Such tape application is well known in the art. Although such a tape application has proved advantageous ithas one fault. That is, the edges of the tape may loose contact with the host surface and thus provide an area where diterus may accumulate. When handling foodstuffs this may be unacceptable as cleaning tends to degrade the contact even more as high pressure water or steam may work its way under the tape.
Figs. 2 and 3 provide a means of shielding any exposed edges of the nonstick tape from the effect of a high pressure stream of cleaning water from ripping the tape from the anvil.

_ 3 ~(lar5~71 In Fig. 2 a frame 18 having a vertical component 20 and an attached horizontal component 22 provides a contact surface that the sealing bar will contact on each revolution of the sealing head 12. The frame 18 is an elongated element that supports a cushion means 24 on the top surface of the elongated horizontal surface of the frame. The cushion is overlaid with a strip of nonstick tape 26 that is wrapped around the sides of the cushion and the sides of the horizontal member of the frame.
Fig. 3 shows how the frame is held in an anvil block 28. The anvil block is a generally elongated member having an elongated slot 30 formed therein to receive the frame 18 and specifically the vertical component 20. A plurality of threading apertures are provided in the anvil block 28 to accommodate frame retainer means 32 which are in a preferred embodiment bolts. A second group or set of threaded apertures such as 34 are provided to accommodate fastening means 36, herein restraint bolts, which will secure restraints 38 to the anvil block. The restraints, one on each side of the frame and anvil block assembly will protect the nonstick tape from the ends thereof being "pulled off"
or otherwise degraded when the sealing head anvil is being "power washed".
A further advantage of this design is that the frame provides an easily replaceable element that can be quickly changed into the anvil block when a replacement is necessary.
Thus it can be seen that there has been provided a replaceable frame hosting a non~tick surface that can be easily installed into an anvil block on a sealing head of a sealing unit on a wrapper. Nuances of this design are contemplated by the inventor and minor design changes are contemplated as being within the scope of the following claims.

Claims (4)

What is claimed is:
1. In a sealing head for use in a wrapper, said sealing head incorporating a sealing bar and an anvil upon which said sealing bar will impact in sealing film surrounding articles to be wrapped, the improvement comprising:
an anvil block having an elongated slot formed in a top surface thereof, said anvil block further having a plurality of threaded apertures formed in both side surfaces of said anvil block;
a frame means having a vertical component connected to a horizontal component ring edges, said frame means being a generally elongated structure having a length similar to the length of said anvil block and said frame means vertical component carried in said elongated slot of said anvil block:
a cushion means carried on the top surface of said horizontal component and extending the length of said horizontal component;
a nonstick film covering the top surface of said cushion means and continuously extending adjacent said edges of said horizontal component of said frame means;
restraint means carried by said anvil block and extending beyond said edges of said horizontal component said frame means to partially cover said nonstick film extending adjacent said edges of said horizontal component of said frame means.
2. The invention in accordance with Claim 1 wherein said restraint means is an elongated element carried on each side of said anvil block,
3. The invention in accordance with Claim 2 wherein said restraint means fastened to said anvil block.
4. The invention in accordance with Claim 3 wherein said frame means is restrained in said anvil block by means of a frame restraint fastener.
CA002045171A 1989-12-05 1990-12-04 Tape restraint for use with wrapper sealing anvil Abandoned CA2045171A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44634889A 1989-12-05 1989-12-05
US07/446,348 1989-12-05

Publications (1)

Publication Number Publication Date
CA2045171A1 true CA2045171A1 (en) 1991-06-06

Family

ID=23772254

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002045171A Abandoned CA2045171A1 (en) 1989-12-05 1990-12-04 Tape restraint for use with wrapper sealing anvil

Country Status (5)

Country Link
EP (1) EP0456818A4 (en)
JP (1) JPH04503795A (en)
KR (1) KR920700999A (en)
CA (1) CA2045171A1 (en)
WO (1) WO1991008141A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011015111A1 (en) * 2011-03-21 2012-09-27 Beck Packautomaten Gmbh & Co. Kg Improved lower punch for thick film webs

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672268A (en) * 1948-02-25 1954-03-16 William R Mclain Thermoplastic sealing of bags with vacuum nozzles
US2800756A (en) * 1956-02-13 1957-07-30 Grace W R & Co Pedal operated vacuum forming and heat sealing packaging machine
US3196067A (en) * 1962-04-09 1965-07-20 Techtmann Ind Inc Heat sealing machines
US3409494A (en) * 1966-03-03 1968-11-05 Hercules Inc Sealing element for shrink film packaging machine
US3748207A (en) * 1971-08-26 1973-07-24 Kimberly Clark Co Mechanism for heat sealing
US3867226A (en) * 1971-11-24 1975-02-18 Joseph J Guido Method for sealing plastic bags
US3830681A (en) * 1972-11-08 1974-08-20 Fmc Corp Package sealing in steam atmosphere
US4306400A (en) * 1980-02-07 1981-12-22 Rexham Corporation Packaging machine with continuous motion top sealer
US4433527A (en) * 1981-08-19 1984-02-28 E. I. Du Pont De Nemours And Company Heat sealing film cut-off device

Also Published As

Publication number Publication date
KR920700999A (en) 1992-08-10
JPH04503795A (en) 1992-07-09
EP0456818A1 (en) 1991-11-21
EP0456818A4 (en) 1993-11-10
WO1991008141A1 (en) 1991-06-13

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