US3894312A - Apparatus and method for inverting tubular casing - Google Patents

Apparatus and method for inverting tubular casing Download PDF

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Publication number
US3894312A
US3894312A US416125A US41612573A US3894312A US 3894312 A US3894312 A US 3894312A US 416125 A US416125 A US 416125A US 41612573 A US41612573 A US 41612573A US 3894312 A US3894312 A US 3894312A
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US
United States
Prior art keywords
tubular
housing
film
gas
reel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US416125A
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English (en)
Inventor
Frank M Mcneill
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.)
Continental Group Inc
Teepak Investments Inc
Tee Pak Inc
Original Assignee
Tee Pak Inc
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 Tee Pak Inc filed Critical Tee Pak Inc
Priority to US416125A priority Critical patent/US3894312A/en
Priority to BE150516A priority patent/BE822206A/fr
Priority to CA213,700A priority patent/CA1002802A/en
Priority to NL7414870A priority patent/NL7414870A/xx
Priority to DE19742454318 priority patent/DE2454318A1/de
Priority to FR7437687A priority patent/FR2251511B3/fr
Application granted granted Critical
Publication of US3894312A publication Critical patent/US3894312A/en
Assigned to BUFPAK CORPORATION A DE CORP. reassignment BUFPAK CORPORATION A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CONTINENTAL GROUP, INC., THE A NY CORP. OF NY
Assigned to CONTINENTAL GROUP, INC., A CORP. OF N.Y. reassignment CONTINENTAL GROUP, INC., A CORP. OF N.Y. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TEEPAK INC.
Assigned to TEEPAK, INC., A DE CORP. reassignment TEEPAK, INC., A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE JULY 1, 1983. Assignors: BUFPAK CORPORATION A DE CORP
Assigned to TEEPAK INVESTMENTS, INC. reassignment TEEPAK INVESTMENTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TEEPAK, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films
    • B29C67/0018—Turning tubes inside out
    • A—HUMAN NECESSITIES
    • A22—BUTCHERING; MEAT TREATMENT; PROCESSING POULTRY OR FISH
    • A22C—PROCESSING MEAT, POULTRY, OR FISH
    • A22C13/00—Sausage casings

Definitions

  • This invention relates to an apparatus and a method for inverting a flexible tubular film casing.
  • the method for inverting the tubular film comprises: mounting, in an enclosed housing carrying a tubular extension and a gas passageway. a reel of flexible tubular film stock onto a supporting member which permits unwinding of the film. An end of the film then is threaded through the bore of a tubular extension carried by the housing, inverted, placed over the external surface of the tubular extension and clamped. The housing then is pressurized with gas by introducing it through the gas passageway. The film is caused to unwind from the reel and be pulled through the tubular extension by pressurizing the housing with 9 Claims, 6 Drawing Figures [52] U.S. Cl 17/43; 17/45 [51] Int. Cl. A22c 17/14 [58] Field of Search [7/43, 42, 45, 49
  • This invention relates to an improvement in an apparatus and a process for inverting flexible tubular material. More particularly, the invention is related to a method for inverting coated sausage casings.
  • inversion is effected by passing an end of flexible tubular film through the bore of a hollow member, then inverting the film end and securing it onto the external surface of the hollow member in inverted form.
  • the film as it is introduced into the hollow member is gripped by a sealing member across the bottom of the hollow member.
  • Air pressure then is introduced into the hollow member to inflate the film and pull it through the sealing member.
  • the gas pressure causes the tubular material to expand and be pulled through the hollow member which thereby inverts the film.
  • This invention relates to an improvement in an apparatus and in the method for inverting lined flexible tubular film stock which is wound upon a reel and is substantially impervious to gas.
  • the apparatus of the invention comprises: an enclosed housing for the flexible impervious tubular film to be inverted, the housing carrying a tubular extension for receiving an end of said tubular material and permitting the tubular material to pass through the bore of the tubular extension and be coupled thereon, and carrying an aperture therein for permitting flow of gas into or out of the housing, a member mounted in the housing for supporting the flexible tube and permitting unwinding of the tubular film stock, means for access to the interior of the housing to permit mounting of tubular reel stock on the support member, and a flexible tube wound upon a reel mounted on said supporting member.
  • a drive mechanism for the support member or a drive mechanism for pulling the film from the reel may be included in the apparatus to enhance the rate of inverting of the film.
  • the method of inverting the film with this apparatus comprises: placing a reel of tubular film stock onto the supporting member in the enclosed housing and feeding an end of the tubular feed stock through the bore of the tubular extension, inverting the film at the end; securing the inverted end over the external surface of the tubular extension; and pressurizing the housing with a gas, preferably air, to provide positive internal pressure on the film.
  • a gas preferably air
  • This pressure optionally coupled with a drive mechanism, causes the film stock to unwind from the reel and be inverted. When the appropriate length of film stock is inverted, the film stock is severed.
  • the film is severed near the tubular extension in order to permit complete inversion of the film. After the film is inverted, it is wound onto a reel for storage. The free end of the severed casing then is passed through the bore of the tubular extension, inverted, the end secured to the tubular extension, and the inversion method repeated.
  • Advantages of the instant apparatus and processes include: the ability to conveniently and economically invert flexible tubular material; the ability to provide for multiple unit inverting of tubular film reel stock; the elimination of complex sealing equipment normally required for inverting tubular film, which reduces the potential for damage to coated films, e.g., saran coated, since sliding contact between the coated surface and seal wipers is eliminated; and the ability to employ practically maintenance free apparatus.
  • FIG. 1 is an oblique view of the apparatus showing the housing and the film mounted on a support member and passed through the tubular extension and coupled thereon.
  • FIG. 2 is an oblique view of the apparatus showing details of the support mounting for the tubular feed stock and the tubular extension and air inlet in the housing.
  • FIG. 3 is an oblique view of the apparatus including a guide roller mounted directly underneath the tubular extension.
  • FIG. 4 is an oblique view of the apparatus shown in FIG. 1 including a guide roller and a pinch roll drive for aiding in feeding of the tubular material from the supporting reel.
  • FIG. 5 is an oblique view of the apparatus illustrating a drive mechanism for the support member on which the tubular reel stock is mounted.
  • FIG. 6 is an oblique view of the apparatus which illustrates moistening the casing to enhance the flexibility thereof prior to inverting.
  • the basic apparatus is illustrated in FIGS. 1 & 2.
  • the apparatus comprises a gas-tight rectangular housing 3 which is enclosed on all sides and at the bottom or floor.
  • the housing 3 carries a gas passageway 4 in order that the housing may be pressurized with gas or depressurized. It also carries a tubular extension 5 which preferably is circular and of smaller diameter than the tubular film to be inverted.
  • a door 6 is mounted on the housing by means of hinges 7 and 8.
  • a latch 11 is mounted on the door which can be used to open the door and gain access to the interior of the housing. When the door is closed the housing is sealed against gas leakage and the only means of gas escape is through the tubular extension 5.
  • a mounting 13 is positioned on the floor of the housing 3 and extends vertically upward.
  • the mounting 13 carries roller 14 which extends horizontally from the vertical member 13.
  • the roller 14 is used to support the casing reel stock and permit an unwinding movement of reel stock supported on the mounting 13.
  • the support member which comprises the mounting 13 and the roller 14 is more clearly shown in FIG. 2.
  • a reel 15 carries flat casing reel stock 16.
  • the casing may be uncoated or coated or lined or laminated and is substantially impervious to gas.
  • the reel 15 is placed over roller 14 and is supported thereby during the easing inverting process.
  • the roller permits rotation of the casing reel stock thereby permitting unwinding of the casing.
  • FIG. 3 An illustration of a modified view of the basic apparatus described in FIG. 1 is shown in FIG. 3.
  • This apparatus is essentially the same except that it includes a guide roller 21 positioned directly below the tubular extension 5. It is supportably mounted by upright brackets 22 and 23 which are securely positioned on the floor or base of the housing.
  • the guide roller permits easy unwinding of the casing reel stock and accurate alignment of the film stock with the tubular extension 5.
  • FIG. 4 represents an illustration of an embodiment of the apparatus similar to that described in FIG. 3.
  • the drive mechanism comprises a pinch roll mounting 24 which extends vertically from the floor of the housing 3 and pinch rolls 25 and 26 in juxtaposition with each other and rotatably supported thereon. These pinch rolls 25 and 26 grasp the casing 16 at the external surface thereof and pull it through the rollers to feed it to the tubular extension 5.
  • the power source for the pinch roll drive mechanism is not shown but it is within the skill of those in the art to couple a power source to these pinch rolls 25 and 26 for effecting rotary movement thereof.
  • FIG. 5 represents an illustration of an embodiment of 1 the apparatus similar to that of FIG. 3 except that a drive mechanism is included for effecting rotation of roller 13 on which the tubular feed stock is mounted instead of a pinch roll drive system.
  • the drive mechanism comprises a motor 30 having a pulley 31 coupled to the motor shaft.
  • a pulley 32 is mounted at the end of roller 14. Power is supplied to pulley 32 by means of a belt 33 which engages pulley 31 and pulley 32.
  • the rate of rotation of the roller 14 for unwinding the casing reel stock can be regulated by means (not shown) such as an idler assembly.
  • a drive mechanism Without a drive mechanism, unwinding of the casing is effected by gas pressure in the housing. Therefore, to reduce the amount of pressure required to unwind the tubular stock, a drive mechanism preferably is included in the apparatus.
  • the basic mode of operation of the apparatus for inverting the casing reel stock which is wound upon a reel is as follows.
  • the reel of casing reel stock is placed upon roller 14 and end 17 of the casing and is threaded underneath guide roller 21.
  • the end 17 then is passed through the bore of tubular extension 5, inverted and fastened over and around the external surface of tubular extension 5.
  • a sealing means 18 (a rubber band, belt or clamp) is placed over the film and binding the end of the film 17 to the external surface of the tubular extension to prevent gas from passing between the casing and the external surface of the tubular extension 5 while the inverting process is conducted.
  • door 6 is closed thereby enclosing housing 3.
  • a drive mechanism such as shown in either FIGS. 4 and 5 is employed, it is activated and adjusted for unwinding the casing 16 from the reel 15 at a desired rate. Then, gas is introduced into the housing through gas passageway 4 thereby pressurizing the housing 3. With the drive mechanism activated and the housing pressurized, the casing 16 is caused to unwind from the reel 15 and be passed through the bore of the tubular extension 5. The casing 16 inverts as it is passed from the tubular extension 5 and forms a large expanded inverted tube.
  • the casing is severed by a cutter (not shown) positioned between pinch rolls 25 and 26 and the tubular extension.
  • the cutter is conventional and can be a knife, cutter bars, or a heated wire which can be activated by conventional means, e.g., manual, photoelectric, splice detector, etc.
  • the end of the film can pass through the tubular extension in order to fully complete the inversion for that section of film.
  • the housing is depressurized.
  • the end of the casing 17 is removed from the tubular extension 5 and the inverted film wound onto a reel.
  • the tubular film is filled prior to inverting with water or wetting agent.
  • water or wetting agent softens the cellulose substrate making it more flexible for processing and inverting. Otherwise, the cellulose substrate may crack because of its lack of flexibility.
  • the apparatus as shown in FIG. 6 is basically the same as that shown in FIG. 4 except that a slug 27 of water is employed to moisten the cellulose portion of the casing prior to inverting.
  • An apparatus for inverting a flexible tubular film which is substantially impervious to gas which comprises:
  • a housing carrying a tubular extension for receiving an end of said tubular film and permitting said tubular film to pass through its bore and be coupled to its external surface and carrying a gas passageway for permitting flow of gas into or out of said housing for pressurizing and de-pressurizing thereof; member mounted in said housing for supporting said reel of tubular film and permitting unwinding of said tubular film; drive mechanism for feeding said tubular film to said tubular extension, said drive mechanism mounted in said housing; and
  • said drive mechanism comprises a pair of pinch rolls for embracing said tubular film and effecting movement of said tubular material to said tubular extension.
  • said support member includes a roller for supporting said tubular film and a drive mechanism which comprises means for driving said roller.
  • said means for access includes a door mounted on a side of said housing to permit access to the interior of said housing for introduction and removal of said tubular film when the stock is exhausted and means for sealing said door against said housing during the pressurization of said housing.
  • a method for inverting a lined flexible tubular film which is substantially impermeable to gas which comprises: placing a reel of said tubular film in an enclosed housing which carries a tubular extension for receiving an end of said tubular stock and permitting passage of said film through said tubular extension and carries a gas passageway for permitting gas flow into and out of said housing a supporting member for said reel stock and onto a support member, passing an end of said tu bular material through the bore of said tubular extension, inverting the film at said end, fastening said inverted end to the external surface of the tubular extension and pressurizing said enclosed housing with gas thereby causing the film to be pulled through said tubular extension and subsequent inverting thereof.
  • tubular film is a sausage casing.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US416125A 1973-11-15 1973-11-15 Apparatus and method for inverting tubular casing Expired - Lifetime US3894312A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US416125A US3894312A (en) 1973-11-15 1973-11-15 Apparatus and method for inverting tubular casing
CA213,700A CA1002802A (en) 1973-11-15 1974-11-14 Apparatus and method for inverting tubular casing
NL7414870A NL7414870A (nl) 1973-11-15 1974-11-14 Werkwijze en inrichting voor het binnenste bui- ten keren van een buisvormig omhulsel.
BE150516A BE822206A (fr) 1973-11-15 1974-11-14 Appareil et procede pour retourner une enveloppe tubulaire
DE19742454318 DE2454318A1 (de) 1973-11-15 1974-11-15 Verfahren zum wenden einer schlauchfoermigen folie und vorrichtung zur durchfuehrung des verfahrens
FR7437687A FR2251511B3 (fr) 1973-11-15 1974-11-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US416125A US3894312A (en) 1973-11-15 1973-11-15 Apparatus and method for inverting tubular casing

Publications (1)

Publication Number Publication Date
US3894312A true US3894312A (en) 1975-07-15

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US416125A Expired - Lifetime US3894312A (en) 1973-11-15 1973-11-15 Apparatus and method for inverting tubular casing

Country Status (6)

Country Link
US (1) US3894312A (fr)
BE (1) BE822206A (fr)
CA (1) CA1002802A (fr)
DE (1) DE2454318A1 (fr)
FR (1) FR2251511B3 (fr)
NL (1) NL7414870A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075737A (en) * 1976-09-20 1978-02-28 Teepak, Inc. Method and device for everting tubular casings
US4162557A (en) * 1976-12-23 1979-07-31 Union Carbide Corporation Process for turning a coated casing inside out
JPS5564781A (en) * 1978-11-06 1980-05-15 Osaka Kagaku Gokin Kk Preparation of processed meat food packaged with colored packaging
US4292711A (en) * 1978-03-31 1981-10-06 Hoechst Aktiengesellschaft Process for the simultaneous filling and turning of a tubular casing with an outside coating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231954A (en) * 1939-05-25 1941-02-18 Ind Patents Corp Casing treatment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2231954A (en) * 1939-05-25 1941-02-18 Ind Patents Corp Casing treatment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075737A (en) * 1976-09-20 1978-02-28 Teepak, Inc. Method and device for everting tubular casings
US4162557A (en) * 1976-12-23 1979-07-31 Union Carbide Corporation Process for turning a coated casing inside out
US4292711A (en) * 1978-03-31 1981-10-06 Hoechst Aktiengesellschaft Process for the simultaneous filling and turning of a tubular casing with an outside coating
JPS5564781A (en) * 1978-11-06 1980-05-15 Osaka Kagaku Gokin Kk Preparation of processed meat food packaged with colored packaging

Also Published As

Publication number Publication date
FR2251511B3 (fr) 1977-08-12
NL7414870A (nl) 1975-05-20
DE2454318A1 (de) 1975-05-22
CA1002802A (en) 1977-01-04
FR2251511A1 (fr) 1975-06-13
BE822206A (fr) 1975-03-03

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STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: BUFPAK CORPORATION A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CONTINENTAL GROUP, INC., THE A NY CORP. OF NY;REEL/FRAME:004089/0336

Effective date: 19811214

AS Assignment

Owner name: CONTINENTAL GROUP, INC., A CORP. OF N.Y.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TEEPAK INC.;REEL/FRAME:004089/0312

Effective date: 19811214

AS Assignment

Owner name: TEEPAK, INC., A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE JULY 1, 1983.;ASSIGNOR:BUFPAK CORPORATION A DE CORP;REEL/FRAME:004185/0588

Effective date: 19830922

AS Assignment

Owner name: TEEPAK INVESTMENTS, INC., 103 SPRINGER BUILDING, 3

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TEEPAK, INC.;REEL/FRAME:004566/0023

Effective date: 19860301