GB1601617A - Method of and apparatus for erecting blanks to form packaging containers and blanks erected thereby - Google Patents

Method of and apparatus for erecting blanks to form packaging containers and blanks erected thereby Download PDF

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Publication number
GB1601617A
GB1601617A GB14476/78A GB1447678A GB1601617A GB 1601617 A GB1601617 A GB 1601617A GB 14476/78 A GB14476/78 A GB 14476/78A GB 1447678 A GB1447678 A GB 1447678A GB 1601617 A GB1601617 A GB 1601617A
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GB
United Kingdom
Prior art keywords
blank
blanks
former
mandrel
edges
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
Application number
GB14476/78A
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.)
WADDINGTON Ltd J
Original Assignee
WADDINGTON Ltd J
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 WADDINGTON Ltd J filed Critical WADDINGTON Ltd J
Priority to GB14476/78A priority Critical patent/GB1601617A/en
Publication of GB1601617A publication Critical patent/GB1601617A/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores
    • B31B50/38—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores the members being forming-tubes
    • B31B50/42—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores the members being forming-tubes acting externally
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding

Description

(54) IMPROVED METHOD OF AND APPARATUS FOR ERECTING BLANKS TO FORM PACKAGING CONTAINERS AND BLANKS ERECTED THEREBY (71) We, JOHN WADDINGTON LIM1TED, a British Company of Wakefield Road, Leeds, Ls1O 3TP, do hereby declare the invention, for which we pray that a Patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to a method of and apparatus for erecting blanks in the formation of tubular packaging containers, and to blanks erected in accordance with the method or by the apparatus.
As it well known, tubular packaging containers are used extensively for packaging a large variety of goods and products, and these containers generally fall into two categories, namely the 'lay-flat' packaging containers which are constructed so as to be capable of lying in flattened sleeve form for transportation and are erectable by pushing together the edges of the flattened sleeve, and rigid packing containers which are not so capable of being collapsed, after erection, to a flattened state, at least not without damaging same. All of these tubular containers which are produced from blanks have a longitudinal seam. The techniques for erection of lay flat containers from blanks are now known, but very few prior proposals have been made for the erection of rigid packaging containers for a number of reasons.Such reasons include that, normally, the speed of erection of rigid containers is very slow in comparison with the well known techniques for erection of the-lay flat containers. Also, it is not commercially acceptable to send rigid containers in erected form from the blank manufacturer to the customer who loads the containers with the product and/or goods, because of the large amount of wasted transportation space taken up by the hollow interiors of the containers.
Because of the tendency of manufacturers and users to avoid the use of rigid containers for the above reasons, the number of configurations of the containers which are available and used is limited. For example, containers of a triangular or pentagon section shape are not normally lay-flat containers, unless provided with an additional crease line, which may be and is usually acceptable.
There is some use of rigid containers at present, and one method of erecting one of the known rigid containers involves the wrapping of the blank round the product. In another method, a blank is creased round a former by relatively moving the former normal to the plane of the blank, In both of these methods, the speed of erection is so slow as to make general acceptance, for other than expensive products, unlikely.
An object of the invention the subject of our co-pending application No. 36712/75 (Serial No. 1,539,736) is to provide a method of erecting rigid packaging containers, and by which the method of erection may be faster than the speeds of erection involved in the known methods of erecting rigid containers.
The present invention concerns yet a further method and an apparatus related to the formation of circular sectioned packaging containers, which ensures a more accurate formation of the container seams.
According to the present invention there is provided a method of erecting individual blanks in sequence into packaging containers of tubular form of which overlapping portions of each blank are joined together to form a seam extending lengthwise of the tubular form, said method comprising moving the blanks individually and in sequence longitudinally of an elongate former, and of each blank, as it so moves, wrapping the blank round the former to cause it to take up the said tubular form with the said portions of the blank overlapping for the formation of said seam, and forming the seam by joining together said overlapped portions and wherein each blank is formed to an out of circular shape on the former so that the said overlapping portions are made to lie in a flat plane, and whilst in such flat plane the overlapping portions are pressed and joined together, the material of the blank being such that deflection of the blank to out of circular form does not crease the blank and when the deflective forces are removed, the blank deflects by its own resilience to the circular form, or is easily deflectable to circular form.
The method has characteristics similar to those as set forth in said co-pending application one exception being that the blank need not necessarily be, but preferably is, coated with or is of a heat sealable material. In the preferred case, the said portions may, as in said copending application, be heated to soften said material at said edges prior to the edges being deflected into said flat plane. By placing the overlapped portions in a flat plane the formation of the seam can be effected much easier and better control of the movement of the blank can be maintained.
The blank preferably is deflected into a shape in section having two long straight sides and semi-circular ends, one of said sides lying in said flat plane. The seam may be at the centre of said one side.
The seam may be effected by means of pressure rollers.
The invention also provides an apparatus for carrying out the method of the invention comprising an elongated former around which each blank is wrapped and which defines two spaced flat faces connected by convex curved edges so that the former defines, in section, a shape having spaced straight sides and convex curved ends, feed means for feeding each blank individually and longitudinally of the former, wrapping means for deflecting each blank whilst it moves longitudinally of the former, around the former into said shape so that a pair of blank edges overlap on one of said flat faces, and joining means for joining the overlapping edge portions of the blank together.
The former preferably is defined by spaced parallel circular sectioned bars between which is an anvil plate disposed longitudinally of said bars, one face of said anvil plate serving to define said flat plane.
Preferably also, the apparatus is for handling blanks of or coated with a heat sealable or weldable material, and has heating bars for heating said overlapped edges before they are deflected into said flat plane.
The diagrammatic drawing accompanying the specification illustrates diagrammatically one embodiment of the method and apparatus of the present invention in Figure 1 thereof, whilst Figure 2 illustrates a cross sectional view of the former of the apparatus of Figure 1 with a formed blank thereon; and Figure 3 illustrates the formed blank after removal from that former.
An example of the method of the invention is shown basically in Figure 1 and in the method plan rectangular blanks such as blank 10 of heat sealable plastics material are formed into circular sectioned tubes such as tube 12, as shown in Figure 3, having sealed seams, such as seam 14, extending lengthwise of the tubes.
Simply, the blanks 10 move individually and sequence from Station A to Station B along an elongated former 16 being a mandrel of the cross-sectional shape shown in Figure 2.
As shown in Figure 2 the mandrel 16 is made up of two spaced, parallel and horizontal, circular-sectioned bars 16A, 16B between which is located an anvil plate 1 6C of which the upper face lies tangentially to the bars 16A, 16B.
Assume that blank 10 is the bottom one of a stack from which the blanks are taken individually and in sequence, and starts off flat. As the blank moves along the mandrel 16, it is progressively wrapped around the mandrel, as shown at stations I, II, II, by wrapping means defined by plough devices such as plates or bars, until it adopts a cross-sectional shape having two straight sides connected by convex ends whilst round the mandrel at station III.
It will be noticed that as the blank 10 proceeds through the stations I to III, the outer sides progressively are deflected round the bars 16A, 16B of the mandrel until at station III the outer edges are overlapped (see in particular Figure 2) and lie, together with regions of the blank adjacent said overlapped edges in a flat plane defined by the top side of the plate 1 6C of the former.
There may be jet heating tubes positioned so as to apply heat to the outer edges of the blank 10 before they reach the overlapped position and before being pressed and firmly sealed together by seam pressure rollers at station III, where the mandrel 16 terminates. Mandrel 16 is cantilevered mounted at the station A end of the apparatus as viewed in Figure 1, to enable the formed blanks to be ejected from the free end of the mandrel at the B station end of the apparatus as viewed in Figure 1. The blanks move continuously from Station A to Station B.
As the blanks are deflected around the mandrel 16, the deflection is such as not to crease the blanks and so that when the deflection forces are removed (in this case) after the formed blanks are removed from the mandrel, the blanks recover to circular section form or are easily deflectable to circular section form for example when closed by metal ends rim rolled thereto, or other circular closures.
The blanks 10 are moved through the stations I to III by suitable means.
Deflecting the blank to the illustrated crosssectional shape whilst the over lapping edges are sealed together provides the advantages that formation of the seam is simple.
When the blank is not of a heat sealable type and the overlapping edges must be glued together, the blanks may be pre-glued, as the apparatus may include a glue application station in place of the jet heating tubes.
WHAT WE CLAIM IS: 1. A method of erecting individual blanks in sequence into packaging containers of tubular form of which overlapping portions of each blank are joined together to form a seam extending lengthwise of the tubular form, said method comprising moving the blanks individually and in sequence longitudinally of an elongate former, and of each blank, as it
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (10)

**WARNING** start of CLMS field may overlap end of DESC **. one exception being that the blank need not necessarily be, but preferably is, coated with or is of a heat sealable material. In the preferred case, the said portions may, as in said copending application, be heated to soften said material at said edges prior to the edges being deflected into said flat plane. By placing the overlapped portions in a flat plane the formation of the seam can be effected much easier and better control of the movement of the blank can be maintained. The blank preferably is deflected into a shape in section having two long straight sides and semi-circular ends, one of said sides lying in said flat plane. The seam may be at the centre of said one side. The seam may be effected by means of pressure rollers. The invention also provides an apparatus for carrying out the method of the invention comprising an elongated former around which each blank is wrapped and which defines two spaced flat faces connected by convex curved edges so that the former defines, in section, a shape having spaced straight sides and convex curved ends, feed means for feeding each blank individually and longitudinally of the former, wrapping means for deflecting each blank whilst it moves longitudinally of the former, around the former into said shape so that a pair of blank edges overlap on one of said flat faces, and joining means for joining the overlapping edge portions of the blank together. The former preferably is defined by spaced parallel circular sectioned bars between which is an anvil plate disposed longitudinally of said bars, one face of said anvil plate serving to define said flat plane. Preferably also, the apparatus is for handling blanks of or coated with a heat sealable or weldable material, and has heating bars for heating said overlapped edges before they are deflected into said flat plane. The diagrammatic drawing accompanying the specification illustrates diagrammatically one embodiment of the method and apparatus of the present invention in Figure 1 thereof, whilst Figure 2 illustrates a cross sectional view of the former of the apparatus of Figure 1 with a formed blank thereon; and Figure 3 illustrates the formed blank after removal from that former. An example of the method of the invention is shown basically in Figure 1 and in the method plan rectangular blanks such as blank 10 of heat sealable plastics material are formed into circular sectioned tubes such as tube 12, as shown in Figure 3, having sealed seams, such as seam 14, extending lengthwise of the tubes. Simply, the blanks 10 move individually and sequence from Station A to Station B along an elongated former 16 being a mandrel of the cross-sectional shape shown in Figure 2. As shown in Figure 2 the mandrel 16 is made up of two spaced, parallel and horizontal, circular-sectioned bars 16A, 16B between which is located an anvil plate 1 6C of which the upper face lies tangentially to the bars 16A, 16B. Assume that blank 10 is the bottom one of a stack from which the blanks are taken individually and in sequence, and starts off flat. As the blank moves along the mandrel 16, it is progressively wrapped around the mandrel, as shown at stations I, II, II, by wrapping means defined by plough devices such as plates or bars, until it adopts a cross-sectional shape having two straight sides connected by convex ends whilst round the mandrel at station III. It will be noticed that as the blank 10 proceeds through the stations I to III, the outer sides progressively are deflected round the bars 16A, 16B of the mandrel until at station III the outer edges are overlapped (see in particular Figure 2) and lie, together with regions of the blank adjacent said overlapped edges in a flat plane defined by the top side of the plate 1 6C of the former. There may be jet heating tubes positioned so as to apply heat to the outer edges of the blank 10 before they reach the overlapped position and before being pressed and firmly sealed together by seam pressure rollers at station III, where the mandrel 16 terminates. Mandrel 16 is cantilevered mounted at the station A end of the apparatus as viewed in Figure 1, to enable the formed blanks to be ejected from the free end of the mandrel at the B station end of the apparatus as viewed in Figure 1. The blanks move continuously from Station A to Station B. As the blanks are deflected around the mandrel 16, the deflection is such as not to crease the blanks and so that when the deflection forces are removed (in this case) after the formed blanks are removed from the mandrel, the blanks recover to circular section form or are easily deflectable to circular section form for example when closed by metal ends rim rolled thereto, or other circular closures. The blanks 10 are moved through the stations I to III by suitable means. Deflecting the blank to the illustrated crosssectional shape whilst the over lapping edges are sealed together provides the advantages that formation of the seam is simple. When the blank is not of a heat sealable type and the overlapping edges must be glued together, the blanks may be pre-glued, as the apparatus may include a glue application station in place of the jet heating tubes. WHAT WE CLAIM IS:
1. A method of erecting individual blanks in sequence into packaging containers of tubular form of which overlapping portions of each blank are joined together to form a seam extending lengthwise of the tubular form, said method comprising moving the blanks individually and in sequence longitudinally of an elongate former, and of each blank, as it
so moves, wrapping the blank round the former to cause it to take up the said tubular form with said portions of the blank overlapping for the formation of said seam, and forming the seam by joining together said overlapped portions, and wherein each blank is formed to an out of circular shape on the former so that the said overlapping portions are made to lie in a flat plane, and whilst in such flat plane the overlapping portions are pressed and joined together, the material of the blank being such that the deflection of the blank to out of circular form does not crease the blank and when the deflective forces are removed, the blank deflects by its resilience to the circular form, or is easily deflectable to circular form.
2. A method according to Claim 1, wherein there is glue between said overlapping portions to join such portions together.
3. A method according to Claim 2, including applying glue to one or both of said portions before overlapping same.
4. A method according to Claim 1, wherein the blank is of or is coated with a material which can be welded or heat sealed, and said portions are heat softened prior to being overlapped.
5. A method of erecting a blank into a tubular packaging container, substantially as hereinbefore described with reference to the accompanying drawing.
6. An apparatus for carrying out the method of Claim 1, comprising an elongated former around which each blank is wrapped and which defines two spaced flat faces connected by convex curved edges so that the former defines, in section, a shape having spaced straight sides and convex curved ends feed means for feeding each blank individually and longitudinally of the former, wrapping means for deflecting each blank, whilst it moves longitudinally of the former, around the former into said shape so that a pair of blank edges overlap on one of said flat faces, and joining means for joining the overlapping edge portions of the blank together.
7. Apparatus according to Claim 6, wherein the former is defined by spaced parallel circular sectioned bars between which is an anvil plate disposed longitudinally of said bars.
8. Apparatus according to Claim 6 or 7, wherein the apparatus is for handling blanks of or coated with a heat sealable or weldable material, and has heating bars for heating said overlapped edges before they are deflected into said flat plane
9. Apparatus for erecting blanks into tubular containers substantially as hereinbefore described with reference to the accompanying drawing.
10. A blank erected by the method according to any one of claims 1 to 5 or by the apparatus according to any one of Claims 6 to 9.
GB14476/78A 1978-04-13 1978-04-13 Method of and apparatus for erecting blanks to form packaging containers and blanks erected thereby Expired GB1601617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14476/78A GB1601617A (en) 1978-04-13 1978-04-13 Method of and apparatus for erecting blanks to form packaging containers and blanks erected thereby

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14476/78A GB1601617A (en) 1978-04-13 1978-04-13 Method of and apparatus for erecting blanks to form packaging containers and blanks erected thereby

Publications (1)

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GB1601617A true GB1601617A (en) 1981-11-04

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GB14476/78A Expired GB1601617A (en) 1978-04-13 1978-04-13 Method of and apparatus for erecting blanks to form packaging containers and blanks erected thereby

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283297A2 (en) * 1987-03-20 1988-09-21 Matsushima Engineering Co., Ltd. Method and apparatus for producing a bag-in-carton
WO2013009227A1 (en) * 2011-07-11 2013-01-17 Å&R Carton Lund Ab Apparatus and method for manufacturing of containers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0283297A2 (en) * 1987-03-20 1988-09-21 Matsushima Engineering Co., Ltd. Method and apparatus for producing a bag-in-carton
EP0283297A3 (en) * 1987-03-20 1989-05-10 Matsushima Engineering Co., Ltd. Method and apparatus for producing a bag-in-carton
WO2013009227A1 (en) * 2011-07-11 2013-01-17 Å&R Carton Lund Ab Apparatus and method for manufacturing of containers
RU2566476C2 (en) * 2011-07-11 2015-10-27 О Энд Р Картон Лунд Аб Device and process for production of containers
US9821527B2 (en) 2011-07-11 2017-11-21 A&R Carton Lund AB Apparatus and method for manufacturing of containers

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee