EP0077302B1 - Method and machine for packaging several individually wrapped food products - Google Patents
Method and machine for packaging several individually wrapped food products Download PDFInfo
- Publication number
- EP0077302B1 EP0077302B1 EP82830078A EP82830078A EP0077302B1 EP 0077302 B1 EP0077302 B1 EP 0077302B1 EP 82830078 A EP82830078 A EP 82830078A EP 82830078 A EP82830078 A EP 82830078A EP 0077302 B1 EP0077302 B1 EP 0077302B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- products
- wrapper
- group
- predetermined number
- plastics film
- 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
Links
- 238000000034 method Methods 0.000 title claims description 18
- 235000013305 food Nutrition 0.000 title claims description 12
- 238000004806 packaging method and process Methods 0.000 title description 2
- 229920003023 plastic Polymers 0.000 claims description 25
- 239000004033 plastic Substances 0.000 claims description 25
- 238000007493 shaping process Methods 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000002547 anomalous effect Effects 0.000 description 2
- 235000015895 biscuits Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
Images
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
- B65B23/00—Packaging fragile or shock-sensitive articles other than bottles; Unpacking eggs
- B65B23/10—Packaging biscuits
-
- 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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/06—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it
- B65B9/067—Enclosing successive articles, or quantities of material, in a longitudinally-folded web, or in a web folded into a tube about the articles or quantities of material placed upon it the web advancing continuously
Definitions
- the present invention relates to a method and a machine for packaging, by means of a continuously-shaped plastics film wrapper, several food products individually wrapped.
- multipaks packages are usually called “multipaks” and contain about five or six food products, for example, chocolate-covered biscuits, which are individually wrapped in plastics films for obvious hygienic reasons.
- These wrapped products usually have the shape of elongate, flattened parallelepipeds and are arranged flat and side-by- side in the "multipak" package.
- the patent CH-A-400 892 discloses a method for shaping, by means of a continuously-shaped plastics film wrapper multiple packages each containing a group of a predetermined number of products, said method comprising the successive steps of taking the products from a store in which they are stacked, conveying them towards the shaping plastics film wrapper one at a time and with individual drive and introducing them into the plastics film wrapper in groups of predetermined number.
- the anomalous arrangement of the group of products results in the formation of a multiple pack which is itself defective and often even compromises the heat-sealing and cutting of the plastics film between one pack and another. In such a case, a stoppage of the production cycle is incurred, in addition to wasted production.
- the arrangement of groups of predetermined number is achieved by periodically stopping the removal of the products from the store.
- a multiple package of the so-called “multipak” type contains in a plastics film wrapper 2, five food products each indicated 3, and individually wrapped in respective plastics film wrappings indicated 4; the ends of the plastics film wrappers 2, 4 are heat sealed, forming edges indicated 5 and 6 respectively.
- the food products for example, chocolate-covered biscuits, have the shape of elongate, flattened parallelepipeds and are arranged side- by-side and flat in the package 1.
- a machine for carrying out the method according to the invention is generally indicated 7.
- the machine 7 comprises a support frame 8, and a chain conveyor 9 having a closed chain 10 driven around two pulleys, not shown, by drive means 11.
- a plurality of pusher plates is associated with the chain 10 and is arranged therealong in groups of five, corresponding to the desired number of products 3 to be wrapped in each package 1.
- the pusher plates are equally spaced with a spacing slightly greater than the width of the individual products 3.
- the groups of pusher plates are spaced from each other by a length equivalent to about three spacings.
- the chain conveyor 9 extends between a store 13 in which the products 3 coming from a conventional wrapping machine are stacked, and a plastics film wrapper 14 which is being shaped continuously.
- the wrapper 14 is shaped conventionally from a sheet of plastics film 15 which is unrolled through idle rollers 16 from a reel, not shown, being folded on itself to form at first a funnel-shaped mouth and then a tubular envelope, and heat sealed along the folded and juxtaposed edges.
- the chain conveyor 9 has one end 9a surmounted by the stack of products in the store 13, and its opposite end 9b leading into the funnel-shaped mouth of the wrapper 14.
- the machine 7 Downstream of the conveyor 9, the machine 7 includes a conveyor belt 17 which is essentially a continuation of the chain conveyor, as well as a conventional head 18 for heat sealing and cutting of the tubular wrapper 14.
- the chain conveyor 9 also has lateral guide walls for the products 3, indicated 19, the gauge of which corresponds to the length of the individual products 3. Along a section 19a of predetermined length close to the store 13, the walls 19 diverge slightly towards the store to form a lead- in section for the products 3.
- Rods 20 are fixed releasably above the chain conveyor 9 along substantially its entire length, while a horizontal plate 21 is fixed to the store 13 above the chain conveyor.
- each pusher plate 12 removes a respective product 3 from the store 13, and conveys it with positive drive towards the shaping wrapper 14 until it introduces it therein.
- the individual products 3 in the store 13 are continuously transported and introduced into the shaping wrapper 14 one at a time with individual drive, and arranged in groups of five in accordance with the arrangement of the pusher plates 12 in groups of five.
- the plate 21 prevents the product 3 just removed from jumping upwardly due to the other products 3 still in the stack pressing downwardly by gravity.
- the heat sealed edges 6 are folded by the portions 19a of the walls 19 into positions in which they are close against the products 3.
- the rods 20 ensure that the products 3 do not rise from the conveyor 9, for example, due to sticking or springing back of the heat sealed edges 6.
- the products 3 are conveyed thereby along the conveyor belt 17, along which the tubular wrapper is heat sealed and cut at the spaces between one group of products 3 and another to shape the desired packages 1.
- the arrangement of the wrapped products in groups of predetermined number may be achieved by the periodic stopping of a conveyor provided with pusher plates all along its length without break, rather than by stopping the removal from the store by means of a conveyor having pusher plates arranged in groups, as described previously.
- the machine 22 comprises a support frame 23 with a chain conveyor 24 having a closed chain 25 driven around two pulleys, not shown, by intermittent drive means 26.
- a chain conveyor 24 having a closed chain 25 driven around two pulleys, not shown, by intermittent drive means 26.
- Associated with the chain 25 is a plurality of pusher plates, each indicated 27, equally spaced therealong without a break and with spacings slightly greater than the width of the individual products.
- the chain conveyor 24 extends between a store 28, in which the products 3 from the conventional wrapping machine are stacked in five stacks, and a plastics film wrapper 29 which is being shaped continuously and is the same as the wrapper 14 of the machine 7 described above.
- the chain conveyor 24 has an end section 24a adjacent the five stacks of the store 28 and its opposite end 24b leads into the funnel-shaped mouth of the wrapper 29.
- the store 28 is provided with five pushers 30, each placed in correspondence with a respective stack of products 3.
- the machine 22 Downstream of the conveyor 24, the machine 22 includes a belt conveyor 31 and a heat sealing and cutting head 32 exactly like the conveyor belt 17 and the head 18 of the machine 7 described above.
- the chain 25 effects a movement equal to five spaces. This movement is effected at a speed greater than the speed of the wrapper under formation.
- the pushers 30 are actuated to remove five products 3 from the store 28 and transfer them onto the conveyor 24, each being inserted into a space between two pusher plates 27.
- the chain is set in motion in the direction of arrow G to carry the products 3 towards the shaping plastics film wrapper 29, each product being driven positively by a respective pusher plate 26.
- the chain stops again to receive, by means of the pushers 30, a further five products 3, and so on, to completely fill the chain.
- the products 3 When the products 3 reach the end 24b of the conveyor 24, they are introduced, upon movement of the chain between one stop and the next, one at a time, and with individual drive, into the plastics film wrapper 29 which draws them in the direction of the arrow G.
- the periodic stoppage of the belt causes an intermittent feed of the products 3 to the wrapper 29 so that the products 3 are arranged therein in groups of five.
- the wrapper 29 containing the groups of products encounters the head 32, which effects in steps the heat sealing and cutting of the wrapper itself.
- the desired packages 1 are obtained and, in this case, are entirely rigid and compact due to the fact that the products 3 therein are packed tightly against each other.
- the main advantage of the present invention lies in the fact that it allows multiple packages of the so-called "multipak" type to be obtained rapidly and safely with an entirely regular shape and consistency.
- the invention provides rigid compact multiple packages by virtue of the fact that the products therein are packed tightly against each other.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Container Filling Or Packaging Operations (AREA)
- Wrapping Of Specific Fragile Articles (AREA)
Description
- The present invention relates to a method and a machine for packaging, by means of a continuously-shaped plastics film wrapper, several food products individually wrapped.
- These packages are usually called "multipaks" and contain about five or six food products, for example, chocolate-covered biscuits, which are individually wrapped in plastics films for obvious hygienic reasons. These wrapped products usually have the shape of elongate, flattened parallelepipeds and are arranged flat and side-by- side in the "multipak" package.
- Due to the present very high consumption of such wrapped food products which are daily used as snacks in schools and widely distributed in bars and the like, their production is satisfactorily carried out by mass production methods and means. There is a need to form, in an equally satisfactory manner, multiple packs of several wrapped food products, which are required to satisfy the demands of transportation and distribution.
- The patent CH-A-400 892 discloses a method for shaping, by means of a continuously-shaped plastics film wrapper multiple packages each containing a group of a predetermined number of products, said method comprising the successive steps of taking the products from a store in which they are stacked, conveying them towards the shaping plastics film wrapper one at a time and with individual drive and introducing them into the plastics film wrapper in groups of predetermined number.
- It is also known from patent CH-A-374 587 wherein food products are continuously wrapped, to convey said products one at a time and with individual drive and to introduce them one at a time and with individual drive into the plastics film wrapper.
- Although advantageous from various aspects and widely used, these known methods involve some disadvantages. In particular, the group of products frequently does not enter the shaping plastics film wrapper in the desired regular arrangement, but in an anomalous manner. Indeed, since the individual products are wrapped in plastics film they have generally irregular external dimensions and unpredictable behaviour during handling because of the heat sealed ends of the plastics film wrappings.
- The anomalous arrangement of the group of products results in the formation of a multiple pack which is itself defective and often even compromises the heat-sealing and cutting of the plastics film between one pack and another. In such a case, a stoppage of the production cycle is incurred, in addition to wasted production.
- The problem which is at the basis of the present invention is that of devising a method of the type specified, having operating characteristics which will satisfy the above requirements while simultaneously overcoming the disadvantages cited with reference to the prior art.
- This problem is resolved by a method of the type specified, which is characterised according to the appended claim 1.
- To advantage, the arrangement of groups of predetermined number is achieved by periodically stopping the removal of the products from the store.
- Further characteristics and advantages of the method according to the present invention will emerge from the following description of a machine for carrying out the method, which is described by way of non-limiting example with reference to the appended drawings, in which:
- Figure 1 is a perspective view of package of "multipak" type shaped by a method and machine according to the present invention:
- Figure 2 is a perspective view of a machine according to the present invention, and
- Figure 3 is a perspective view of a machine according to the invention, in accordance with a further embodiment of the invention.
- With reference to the appended drawings, a multiple package of the so-called "multipak" type, generally indicated 1, contains in a
plastics film wrapper 2, five food products each indicated 3, and individually wrapped in respective plastics film wrappings indicated 4; the ends of theplastics film wrappers 2, 4 are heat sealed, forming edges indicated 5 and 6 respectively. - The
food products 3, for example, chocolate-covered biscuits, have the shape of elongate, flattened parallelepipeds and are arranged side- by-side and flat in the package 1. - A machine for carrying out the method according to the invention is generally indicated 7. The
machine 7 comprises asupport frame 8, and achain conveyor 9 having a closedchain 10 driven around two pulleys, not shown, by drive means 11. - A plurality of pusher plates, each indicated 12, is associated with the
chain 10 and is arranged therealong in groups of five, corresponding to the desired number ofproducts 3 to be wrapped in each package 1. In particular, within the limits of each group, the pusher plates are equally spaced with a spacing slightly greater than the width of theindividual products 3. The groups of pusher plates are spaced from each other by a length equivalent to about three spacings. - The
chain conveyor 9 extends between astore 13 in which theproducts 3 coming from a conventional wrapping machine are stacked, and aplastics film wrapper 14 which is being shaped continuously. Thewrapper 14 is shaped conventionally from a sheet ofplastics film 15 which is unrolled throughidle rollers 16 from a reel, not shown, being folded on itself to form at first a funnel-shaped mouth and then a tubular envelope, and heat sealed along the folded and juxtaposed edges. - The
chain conveyor 9 has oneend 9a surmounted by the stack of products in thestore 13, and its opposite end 9b leading into the funnel-shaped mouth of thewrapper 14. - Downstream of the
conveyor 9, themachine 7 includes aconveyor belt 17 which is essentially a continuation of the chain conveyor, as well as aconventional head 18 for heat sealing and cutting of thetubular wrapper 14. - The
chain conveyor 9 also has lateral guide walls for theproducts 3, indicated 19, the gauge of which corresponds to the length of theindividual products 3. Along asection 19a of predetermined length close to thestore 13, thewalls 19 diverge slightly towards the store to form a lead- in section for theproducts 3. -
Rods 20 are fixed releasably above thechain conveyor 9 along substantially its entire length, while a horizontal plate 21 is fixed to thestore 13 above the chain conveyor. - The operation of the
machine 7 according to the invention is described below with reference to Figure 2. - When the
chain 10 is set in motion in the direction of arrow F, eachpusher plate 12 removes arespective product 3 from thestore 13, and conveys it with positive drive towards theshaping wrapper 14 until it introduces it therein. In this way, theindividual products 3 in thestore 13 are continuously transported and introduced into theshaping wrapper 14 one at a time with individual drive, and arranged in groups of five in accordance with the arrangement of thepusher plates 12 in groups of five. - During the removal of a
product 3 from thestore 13, the plate 21 prevents theproduct 3 just removed from jumping upwardly due to theother products 3 still in the stack pressing downwardly by gravity. During transport, the heat sealed edges 6 are folded by theportions 19a of thewalls 19 into positions in which they are close against theproducts 3. Therods 20 ensure that theproducts 3 do not rise from theconveyor 9, for example, due to sticking or springing back of the heat sealed edges 6. - As soon as they are inserted in the
tubular wrapper 14, theproducts 3 are conveyed thereby along theconveyor belt 17, along which the tubular wrapper is heat sealed and cut at the spaces between one group ofproducts 3 and another to shape the desired packages 1. - The invention devised in this way can be varied, all the variations lying within the scope of the invention.
- For example, the arrangement of the wrapped products in groups of predetermined number may be achieved by the periodic stopping of a conveyor provided with pusher plates all along its length without break, rather than by stopping the removal from the store by means of a conveyor having pusher plates arranged in groups, as described previously.
- In this case, with reference to Figure 3, the
machine 22 comprises asupport frame 23 with achain conveyor 24 having a closedchain 25 driven around two pulleys, not shown, by intermittent drive means 26. Associated with thechain 25 is a plurality of pusher plates, each indicated 27, equally spaced therealong without a break and with spacings slightly greater than the width of the individual products. - The
chain conveyor 24 extends between astore 28, in which theproducts 3 from the conventional wrapping machine are stacked in five stacks, and aplastics film wrapper 29 which is being shaped continuously and is the same as thewrapper 14 of themachine 7 described above. - The
chain conveyor 24 has anend section 24a adjacent the five stacks of thestore 28 and itsopposite end 24b leads into the funnel-shaped mouth of thewrapper 29. - The
store 28 is provided with fivepushers 30, each placed in correspondence with a respective stack ofproducts 3. - Downstream of the
conveyor 24, themachine 22 includes abelt conveyor 31 and a heat sealing and cuttinghead 32 exactly like theconveyor belt 17 and thehead 18 of themachine 7 described above. - Between one stoppage and the next, the
chain 25 effects a movement equal to five spaces. This movement is effected at a speed greater than the speed of the wrapper under formation. - In particular, at least an initial greater part of this movement is made with increasing speed.
- The operation of the
machine 22 is described below. , - During a stoppage of the
chain 25, thepushers 30 are actuated to remove fiveproducts 3 from thestore 28 and transfer them onto theconveyor 24, each being inserted into a space between twopusher plates 27. - At this point, the chain is set in motion in the direction of arrow G to carry the
products 3 towards the shapingplastics film wrapper 29, each product being driven positively by arespective pusher plate 26. After moving five spaces, the chain stops again to receive, by means of thepushers 30, a further fiveproducts 3, and so on, to completely fill the chain. - When the
products 3 reach theend 24b of theconveyor 24, they are introduced, upon movement of the chain between one stop and the next, one at a time, and with individual drive, into theplastics film wrapper 29 which draws them in the direction of the arrow G. The periodic stoppage of the belt causes an intermittent feed of theproducts 3 to thewrapper 29 so that theproducts 3 are arranged therein in groups of five. - Since the speed of the wrapper is less than the speed of the
chain 25, and the greater number of the fiveproducts 3 intended to shape an individual group are introduced into the wrapper at an increasing speed, theproducts 3 themselves are tightly packed against each other while becoming enclosed by thewrapper 29. - Subsequently, the
wrapper 29 containing the groups of products encounters thehead 32, which effects in steps the heat sealing and cutting of the wrapper itself. In this way, the desired packages 1 are obtained and, in this case, are entirely rigid and compact due to the fact that theproducts 3 therein are packed tightly against each other. - The main advantage of the present invention lies in the fact that it allows multiple packages of the so-called "multipak" type to be obtained rapidly and safely with an entirely regular shape and consistency.
- In accordance with a further aspect, the invention provides rigid compact multiple packages by virtue of the fact that the products therein are packed tightly against each other.
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT22990/81A IT1167475B (en) | 1981-07-17 | 1981-07-17 | METHOD AND MACHINE TO OBTAIN, THROUGH A CONTINUOUS FORMAT OF CELLOFAN, PACKAGES OF MULTIPLE SINGLE CELLOFANATI FOOD PRODUCTS |
IT2299081 | 1981-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0077302A1 EP0077302A1 (en) | 1983-04-20 |
EP0077302B1 true EP0077302B1 (en) | 1985-11-21 |
Family
ID=11202620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82830078A Expired EP0077302B1 (en) | 1981-07-17 | 1982-04-01 | Method and machine for packaging several individually wrapped food products |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0077302B1 (en) |
CH (1) | CH650460A5 (en) |
DE (1) | DE3267519D1 (en) |
ES (1) | ES8305267A1 (en) |
IT (1) | IT1167475B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1232579B (en) * | 1989-02-13 | 1992-02-26 | Cavanna Spa | PROCEDURE AND EQUIPMENT FOR FORMING MULTIPLE PACKAGES OF PRODUCTS, ESPECIALLY FOOD PRODUCTS |
DE19923839A1 (en) * | 1999-05-26 | 2000-11-30 | Mitsubishi Polyester Film Gmbh | Cardboard box system containing a sealable polyester film |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH374587A (en) * | 1959-08-31 | 1964-01-15 | Sig Schweiz Industrieges | Device for the continuous production of packs |
CH400892A (en) * | 1963-05-08 | 1965-10-15 | Sig Schweiz Industrieges | Device for grouping and feeding objects |
CA948540A (en) * | 1970-07-28 | 1974-06-04 | Harry S. Swanson | Cigar pack wrapping apparatus |
-
1981
- 1981-07-17 IT IT22990/81A patent/IT1167475B/en active
-
1982
- 1982-02-10 CH CH812/82A patent/CH650460A5/en not_active IP Right Cessation
- 1982-04-01 EP EP82830078A patent/EP0077302B1/en not_active Expired
- 1982-04-01 DE DE8282830078T patent/DE3267519D1/en not_active Expired
- 1982-05-20 ES ES512389A patent/ES8305267A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT8122990A0 (en) | 1981-07-17 |
ES512389A0 (en) | 1983-04-16 |
DE3267519D1 (en) | 1986-01-02 |
CH650460A5 (en) | 1985-07-31 |
IT1167475B (en) | 1987-05-13 |
EP0077302A1 (en) | 1983-04-20 |
ES8305267A1 (en) | 1983-04-16 |
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