EP0358005A1 - Method for the manufacture of a filling pipe on a packing machine - Google Patents

Method for the manufacture of a filling pipe on a packing machine Download PDF

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Publication number
EP0358005A1
EP0358005A1 EP89115077A EP89115077A EP0358005A1 EP 0358005 A1 EP0358005 A1 EP 0358005A1 EP 89115077 A EP89115077 A EP 89115077A EP 89115077 A EP89115077 A EP 89115077A EP 0358005 A1 EP0358005 A1 EP 0358005A1
Authority
EP
European Patent Office
Prior art keywords
filling pipe
pipe
filling
pipes
chamber
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.)
Granted
Application number
EP89115077A
Other languages
German (de)
French (fr)
Other versions
EP0358005B1 (en
Inventor
Tommy Ljungström
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.)
Profor AB
Original Assignee
Profor AB
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 Profor AB filed Critical Profor AB
Priority to AT89115077T priority Critical patent/ATE95774T1/en
Publication of EP0358005A1 publication Critical patent/EP0358005A1/en
Application granted granted Critical
Publication of EP0358005B1 publication Critical patent/EP0358005B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • 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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers

Definitions

  • the present invention relates to a filling pipe on a packing machine consisting of two concentrically arranged metal pipes.
  • the product is filled at a relatively low temperature, approx. 4-6°C, into previously arranged packing containers or into a packing tube.
  • condensation occurs on the outside of the filling pipe, and such condensation is undesirable, since bacteria present in the air can adhere to the water drops which are formed by condensation and which subsequently can drop off from the outside of the filling pipe down into the packages. From a hygienic point of view any condensation on the outside of the filling pipe is thus undesirable and it is endeavoured to find means to prevent any formation of condensation.
  • One solution of the problem is offered by the present invention which relates to a double-walled filling pipe, consisting of two concentrically arranged metal pipes, which at their ends are welded together in a gas-tight manner so that a gas-tight chamber is formed between the pipes, which is evacu­ated. Owing to the evacuated chamber with annular cross-section between the inner and outer pipe of the filling pipe a very good thermal insulation is obtained, which means that the cold product which cools down the inner wall has no decisive cooling effect on the outer metal pipe, so that condensation is largely prevented.
  • the filling pipe shown in the Figure is designated 1 and it comprises an upper coupling part 2 and a lower outlet part 3. As is evident from the Figure the righthand part of the filling pipe is shown cut-through whereas the lefthand part is shown in uncut projection.
  • the central part of the filling pipe 1 consists of two concentrically arranged pipes 4 and 5 and a chamber 6 formed between the said pipes 4 and 5.
  • the inner filling channel of the filling pipe is designated 7.
  • the two concentric pipes 4 and 5, which between them accomodate the chamber 6, are welded together along the annular welds 8 and 9 in such a manner that the chamber obtains a gas-­tight seal.
  • the filling pipe 1,in the version which is shown in the Figure, is intended to be coupled together with a pipe system for the supply of contents, in that the coupling part 2 on the upper part of the filling pipe 1 is connected to the said pipe system, not shown here.
  • the contents When the contents are supplied through the filling pipe 1 the contents will pass the inner duct 7 and leave the filling pipe 1 through its outlet 3. Since the contents, when they are constituted of dairy products such as e.g. milk, are relatively cold at the point of filling, approx.
  • the inner pipe part 4 will be cooled down and assume the same temperature as the contents. Normally this would mean that the outside of the filling pipe would assume the same temperature, since the filling pipe 1 is made of metal, in particular stainless steel, so that moisture occurring in the atmosphere would condense on the outside of the filling pipe 1. This is prevented in the present case in that the filling pipe 1 consists of two concentrically arranged pipe portions 4 and 5 which are separated by the chamber 6 wherein a technical vacuum prevails. In practice it is not possible to achieve a total vacuum in the chamber 6, but practical experiments have shown that a pressure of max. 75 mm Hg is sufficient to provide a good insulating effect between the pipes 4 and 5.
  • the outer pipe 5 of the filling pipe 1 is not cooled down, therefore, since the evacuated space constitutes a very good thermal insulator but the outside of the pipe 5, in principle, assumes the same temperature as the surrounding air which means that moisture occurring in the atmosphere does not condense on the outside of the pipe 5.
  • the problem in the manufacture of the filling pipe in accordance with the invention lies in being able to evacuate the narrow gap between the concentric pipes 4 and 5 and a solution of this problem which is put into practice is that the welding is carried out in a vacuum chamber with an automatic welding unit which joins the two pipes 4 and 5 to one another along two annular welds 8 and 9 situated at a distance from one another. Since the welding is carried out in a vacuum chamber where a pressure of max. 75 mm Hg prevails, the pressure inside the chamber 6 will attain approximately the same value.
  • the filling pipe in accordance with the invention presents many advantages as against known filling pipes, and it has been found too that when the filling pipe is used for hot filling it functions in the same thermally insulating manner, that is to say, the outer filling pipe wall does not assume the same high temperature as the inner filling pipe, which may be an advantage.
  • the main technical effect with the filling pipe in accordance with the invention is that the design prevents the forming of condensation on the outside of the filling pipe and such a condensation, as pointed out earlier,is particularly troublesome, since water drops may fall down into the packages intended for filling, which is unhygienic and quite unacceptable in the filling of so-called aseptic packages.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Vacuum Packaging (AREA)
  • Thermal Insulation (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
  • Hydrogenated Pyridines (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packages (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The invention relates to a product filling pipe (1) to a packing machine for liquid contents such as milk. The filling pipe (1) consists of two concentric pipes (4,5) of metal which between them form a vacuum chamber (6). The double-walled filling pipe (1) is manufactured by the welding together in a vacuum chamber of two concentrically arranged pipes (4) and (5) along the annular weld joints (8) and (9). When a product which is considerably cooler than the surrounding atmosphere is supplied through the inner pipe (4) the outer pipe (5) will not be cooled down to an appreciable extent, since the evacuated space (6) in between constitutes a good thermal insulator.

Description

  • The present invention relates to a filling pipe on a packing machine consisting of two concentrically arranged metal pipes.
  • In modern high-capacity packing machines for products such as milk, the product is filled at a relatively low temperature, approx. 4-6°C, into previously arranged packing containers or into a packing tube. Owing to the low temperature of the filled product, condensation occurs on the outside of the filling pipe, and such condensation is undesirable, since bacteria present in the air can adhere to the water drops which are formed by condensation and which subsequently can drop off from the outside of the filling pipe down into the packages. From a hygienic point of view any condensation on the outside of the filling pipe is thus undesirable and it is endeavoured to find means to prevent any formation of condensation.
  • One solution of the problem is offered by the present invention which relates to a double-walled filling pipe, consisting of two concentrically arranged metal pipes, which at their ends are welded together in a gas-tight manner so that a gas-tight chamber is formed between the pipes, which is evacu­ated. Owing to the evacuated chamber with annular cross-section between the inner and outer pipe of the filling pipe a very good thermal insulation is obtained, which means that the cold product which cools down the inner wall has no decisive cooling effect on the outer metal pipe, so that condensation is largely prevented.
  • The invention will be described in the following with reference to the attached schematic drawing which shows a filling pipe,half in section, in accordance with the invention.
  • The filling pipe shown in the Figure is designated 1 and it comprises an upper coupling part 2 and a lower outlet part 3. As is evident from the Figure the righthand part of the filling pipe is shown cut-through whereas the lefthand part is shown in uncut projection. The central part of the filling pipe 1 consists of two concentrically arranged pipes 4 and 5 and a chamber 6 formed between the said pipes 4 and 5. The inner filling channel of the filling pipe is designated 7.
  • The two concentric pipes 4 and 5, which between them accomodate the chamber 6, are welded together along the annular welds 8 and 9 in such a manner that the chamber obtains a gas-­tight seal. The filling pipe 1,in the version which is shown in the Figure,is intended to be coupled together with a pipe system for the supply of contents, in that the coupling part 2 on the upper part of the filling pipe 1 is connected to the said pipe system, not shown here. When the contents are supplied through the filling pipe 1 the contents will pass the inner duct 7 and leave the filling pipe 1 through its outlet 3. Since the contents, when they are constituted of dairy products such as e.g. milk, are relatively cold at the point of filling, approx. 4°C, and large quantities of contents are pumped through the filling pipe 1, the inner pipe part 4 will be cooled down and assume the same temperature as the contents. Normally this would mean that the outside of the filling pipe would assume the same temperature, since the filling pipe 1 is made of metal, in particular stainless steel, so that moisture occurring in the atmosphere would condense on the outside of the filling pipe 1. This is prevented in the present case in that the filling pipe 1 consists of two concentrically arranged pipe portions 4 and 5 which are separated by the chamber 6 wherein a technical vacuum prevails. In practice it is not possible to achieve a total vacuum in the chamber 6, but practical experiments have shown that a pressure of max. 75 mm Hg is sufficient to provide a good insulating effect between the pipes 4 and 5.
  • Owing to the presence of the evacuated chamber 6 the outer pipe 5 of the filling pipe 1 is not cooled down, therefore, since the evacuated space constitutes a very good thermal insulator but the outside of the pipe 5, in principle, assumes the same temperature as the surrounding air which means that moisture occurring in the atmosphere does not condense on the outside of the pipe 5.
  • The problem in the manufacture of the filling pipe in accordance with the invention lies in being able to evacuate the narrow gap between the concentric pipes 4 and 5 and a solution of this problem which is put into practice is that the welding is carried out in a vacuum chamber with an automatic welding unit which joins the two pipes 4 and 5 to one another along two annular welds 8 and 9 situated at a distance from one another. Since the welding is carried out in a vacuum chamber where a pressure of max. 75 mm Hg prevails, the pressure inside the chamber 6 will attain approximately the same value.
  • The filling pipe in accordance with the invention presents many advantages as against known filling pipes, and it has been found too that when the filling pipe is used for hot filling it functions in the same thermally insulating manner, that is to say, the outer filling pipe wall does not assume the same high temperature as the inner filling pipe, which may be an advantage. The main technical effect with the filling pipe in accordance with the invention, though, is that the design prevents the forming of condensation on the outside of the filling pipe and such a condensation, as pointed out earlier,is particularly troublesome, since water drops may fall down into the packages intended for filling, which is unhygienic and quite unacceptable in the filling of so-called aseptic packages.

Claims (3)

1. A filling pipe on a packing machine consisting of two concentrically arranged metal pipes,
characterized in that the outer pipe (5) at its ends (8,9) is joined in a gas-tight manner to the inner pipe (4) in such a way that between the inner and outer pipe (4,5) a closed chamber (6) is formed, and that the said chamber formed is evacuated.
2. A filling pipe in accordance with claim 1,
characterized in that the pressure inside the said evacuated chamber (6) is less than 75 mm Hg.
3. A method for the manufacture of the filling pipe (1) in accordance with claim 1,
characterized in that the said inner and outer pipes (4,5) are welded together in a vacuum chamber.
EP89115077A 1988-09-05 1989-08-16 Method for the manufacture of a filling pipe on a packing machine Expired - Lifetime EP0358005B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115077T ATE95774T1 (en) 1988-09-05 1989-08-16 METHOD OF MAKING A FILLING TUBE ON A PACKAGING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803099A SE464126B (en) 1988-09-05 1988-09-05 FILLER ROW AT PACKAGING MACHINE
SE8803099 1988-09-05

Publications (2)

Publication Number Publication Date
EP0358005A1 true EP0358005A1 (en) 1990-03-14
EP0358005B1 EP0358005B1 (en) 1993-10-13

Family

ID=20373214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115077A Expired - Lifetime EP0358005B1 (en) 1988-09-05 1989-08-16 Method for the manufacture of a filling pipe on a packing machine

Country Status (14)

Country Link
EP (1) EP0358005B1 (en)
JP (1) JP2772057B2 (en)
KR (1) KR900004597A (en)
AT (1) ATE95774T1 (en)
AU (1) AU634487B2 (en)
CA (1) CA1305955C (en)
DE (1) DE68909869T2 (en)
DK (1) DK164781C (en)
ES (1) ES2045302T3 (en)
FI (1) FI894122A (en)
MX (1) MX170948B (en)
NO (1) NO174092C (en)
SE (1) SE464126B (en)
SU (1) SU1745116A3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503726A1 (en) * 1991-03-08 1992-09-16 Shikoku Kakoki Co., Ltd. Device for preventing condensation of water vapor on filling nozzle for use in filling apparatus
EP0567913A1 (en) * 1992-04-25 1993-11-03 KHS Maschinen- und Anlagenbau Aktiengesellschaft Filling head for bottling machines for filling bottles or similar containers
EP0752388A1 (en) * 1995-07-05 1997-01-08 KHS Maschinen- und Anlagenbau Aktiengesellschaft Filling head
FR2785361A1 (en) * 1998-11-02 2000-05-05 Cit Alcatel TRANSPORT OF GAS PUMPS IN A VACUUM PUMP OR PIPES
CN104030220A (en) * 2014-06-03 2014-09-10 苏州柏德纳科技有限公司 Connecting pipe of milk filling machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB788358A (en) * 1954-10-22 1958-01-02 British Oxygen Co Ltd Improvements in or relating to vacuum insulated assemblies
GB1337546A (en) * 1970-01-07 1973-11-14 British Oxygen Co Ltd Vacuum-insulated pipeline
SE431186B (en) * 1982-08-17 1984-01-23 Tetra Pak Int FILLER FOR PACKAGING MACHINES
SE454167B (en) * 1982-09-27 1988-04-11 Tetra Pak Ab SET AND DEVICE FOR MANUFACTURING PACKAGING CONTAINERS
EP0278560A1 (en) * 1987-02-02 1988-08-17 Shikoku Kakoki Co., Ltd. Device for filling specified amount of liquid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58183419A (en) * 1982-04-22 1983-10-26 大和製罐株式会社 Low-temperature liquefied gas discharge adding method
JPS63102699U (en) * 1986-12-24 1988-07-04

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB788358A (en) * 1954-10-22 1958-01-02 British Oxygen Co Ltd Improvements in or relating to vacuum insulated assemblies
GB1337546A (en) * 1970-01-07 1973-11-14 British Oxygen Co Ltd Vacuum-insulated pipeline
SE431186B (en) * 1982-08-17 1984-01-23 Tetra Pak Int FILLER FOR PACKAGING MACHINES
SE454167B (en) * 1982-09-27 1988-04-11 Tetra Pak Ab SET AND DEVICE FOR MANUFACTURING PACKAGING CONTAINERS
EP0278560A1 (en) * 1987-02-02 1988-08-17 Shikoku Kakoki Co., Ltd. Device for filling specified amount of liquid

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0503726A1 (en) * 1991-03-08 1992-09-16 Shikoku Kakoki Co., Ltd. Device for preventing condensation of water vapor on filling nozzle for use in filling apparatus
EP0567913A1 (en) * 1992-04-25 1993-11-03 KHS Maschinen- und Anlagenbau Aktiengesellschaft Filling head for bottling machines for filling bottles or similar containers
EP0752388A1 (en) * 1995-07-05 1997-01-08 KHS Maschinen- und Anlagenbau Aktiengesellschaft Filling head
FR2785361A1 (en) * 1998-11-02 2000-05-05 Cit Alcatel TRANSPORT OF GAS PUMPS IN A VACUUM PUMP OR PIPES
EP0999292A1 (en) * 1998-11-02 2000-05-10 Alcatel Transport of gases pumped in a vacuum pump or in pipings
JP2000140610A (en) * 1998-11-02 2000-05-23 Alcatel Forcible feed of pumping gas in vacuum pump or pipe
US6371737B1 (en) 1998-11-02 2002-04-16 Alcatel Conveying pumped gases in a vacuum pump or in pipes
CN104030220A (en) * 2014-06-03 2014-09-10 苏州柏德纳科技有限公司 Connecting pipe of milk filling machine

Also Published As

Publication number Publication date
SU1745116A3 (en) 1992-06-30
AU4104089A (en) 1990-03-08
CA1305955C (en) 1992-08-04
DK164781B (en) 1992-08-17
ES2045302T3 (en) 1994-01-16
SE8803099L (en) 1990-03-06
JPH02109802A (en) 1990-04-23
DE68909869D1 (en) 1993-11-18
NO893517L (en) 1990-03-06
DK433389D0 (en) 1989-09-01
KR900004597A (en) 1990-04-12
NO174092B (en) 1993-12-06
SE8803099D0 (en) 1988-09-05
MX170948B (en) 1993-09-22
DE68909869T2 (en) 1994-02-10
FI894122A (en) 1990-03-06
NO893517D0 (en) 1989-09-01
DK433389A (en) 1990-03-06
NO174092C (en) 1994-03-16
SE464126B (en) 1991-03-11
FI894122A0 (en) 1989-09-01
AU634487B2 (en) 1993-02-25
JP2772057B2 (en) 1998-07-02
DK164781C (en) 1992-12-28
ATE95774T1 (en) 1993-10-15
EP0358005B1 (en) 1993-10-13

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