CN1131821C

CN1131821C - Packaging container with opening device, knife apparatus and method to produce said container

Info

Publication number: CN1131821C
Application number: CN99813870.3A
Authority: CN
Inventors: M·帕尔姆奈斯
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 1998-11-30
Filing date: 1999-09-29
Publication date: 2003-12-24
Anticipated expiration: 2019-09-29
Also published as: SE9804121L; CN1328519A; DE69910428D1; EP1135309B1; WO2000032494A1; SE519009C2; CA2343290C; ATE247041T1; CA2343290A1; DK1135309T3; BR9915740B1; BR9915740A; SE9804121D0; MY121374A; DE69910428T2; EP1135309A1; ID28815A; HK1042679A1; AU6330499A

Abstract

The present invention relates to packaging containers (10) for pourable food products, comprising a laminated, tubular packaging material with opposed end fin portions (11, 12) that have been produced by sealing and cutting a continuous packaging material web between consecutive packages. A line (14) of perforations extends across a corner of one of the end portions (11) to facilitate the opening of the container. The cut edge of the end fin portion (11) with the line (14) of perforations is provided with a bend (11d), so that a first segment (11b) of the cut edge extends more close to the product-filled part (13) of the container than a second segment (11c) of the cut edge. The second segment (11c) of the cut edge which is more distant from the product-filled part of the container than the first segment, forms a grip-tab (11a) for opening the perforated corner. The invention also relates to a knife apparatus and a method to produce the packaging container.

Description

The packing container of band device for opening, knife apparatus and the method for producing described container

Technical field

But the used packing container of the consumable products that the present invention relates to can, this container is made of the tubular packaging material of a lamination, packing have two relative ends, this end is that the continuous packing connecting strap between two packages of front and back produces by sealing and incision, wherein, a perforation line crosses one jiao of extension of one of them described end so that open container.The invention still further relates in order to the knife apparatus of cutting packing connecting strap with in order to the method for Production and Packaging container.

Background technology

But the technical field of the pure juice thick soup of warm milk, tomato that the present invention relates to pack the consumable products of can such as fruit juice, handles through very high temperature, seasonings etc.Some consumable products, specifically the product that eats for children is sold under liquid state, is stored, uses under frozen state for domestic refrigerator.These products are packaged in the package, and package is with making through the packing of sterilizing or disinfect in advance.

But the exemplary of this package used tetrahedron packing container that is the consumable products of liquid or can, common name TETRA CLASSIC ASEPTIC (registered trade mark (RTM)), this makes by folding and sealing reel laminated packaging material.Laminated packaging material has the two sides and respectively is covered with one deck such as polyethylene one analog thermoplastic plastics, uses a supporting course of making as paper one fiber material.On laminated packaging material in order to the one side that contacts with the edible charging of package also have one deck also be covered with a thermoplastic plastic as aluminium foil one class barrier material.

For making the tetrahedron packing container of the above-mentioned type, to bottle placer or wrapping machine feed reel laminated packaging material.In wrapping machine, the reel package material is carried out disinfection as superoxol one class chemosterilant by coating.After sterilization finishes, remove disinfectant, for example, can remove disinfectant by heating evaporation from package material surface.

Folding and vertical sealing packing carry out can with sterile-processed consumable products again to form a pipe material.Pipe material is passed through between two pairs of endless chains that have a sealing spare, sealing spare just will manage feed collet tight therebetween also sealing pipe material and be created in first party upwardly extending first through sealed-in material band and on a vertical direction, extend second through sealed-in material band.The gained package just has tetrahedral shape.Again to cutting between can and sealed-in tetrahedral package at former and later two through sealed-in strip of wrapping material.An example of this wrapping machine is TETRACLASSIC ASEPTIC (registered trade mark (RTM)) bottle placer, and this is to be made by the Tetra Pak Stalvall company in Sweden Partille area.

For opening this package several method had been proposed once.Have a kind of method to provide a perforation line, it is harmless that perforation line partly is kept perfectly inner barrier layer through the skin of laminated packaging material, and the extension of crossing one jiao of package.Can cut or tear package and from package, pour out charging along perforation line.But, through finding that some people as children and older people, can be difficult to open this package because of pointing weak or not having suitable scissors.

The hole that another kind method provides and one form on package, cover with a pulling-on piece.For obtaining the charging of package, as long as end user's pulling-on piece just can be obtained the package charging by this hole.But, for taking the consumable products that freezes in the tetrahedral package that is packaged in the above-mentioned type, generally still need a kind of method of improved open package that provides.

Disclosure of an invention

An object of the present invention is to provide a kind of opening with the used better means of the packing container at a tearable angle.Another purpose is to improve the antiseptic power of this container.A further object of the present invention is to remove the generation of waste material from.

For this purpose, but the present invention proposes a kind of packing container that is used for the consumable products of can, constitute by the lamination tubular packaging material that has two relative end fin parts, the end fin partly is that the continuous packing between former and later two packages produce by sealing and incision, wherein, one perforation line strides across the bight at one of described both ends and extends so that open container, it is characterized in that, the side cut that has the end fin part of perforation line has a turn of bilge, and first section product-filled part of comparing more close container with second section that cuts edge of side cut extended, far away second section of product-filled part from container of comparing with first section of wherein cutting edge forms a clamp clip in order to the angle of opening perforation, the side cut turn of bilge is arranged near the perforation line, and the side cut turn of bilge comprises that one enters the otch of the perforation line of end.

Bight with this clamp clip is more prone to the container of unpacking, and this is because it points out out which angle of container to have the condition that makes things convenient for of tearing on the one hand, is because it provides the bigger surface that clamps for finger on the other hand.In addition, overhanging clamp clip provides the required condition of better exerting oneself of tearing.

The side cut turn of bilge preferably is positioned near the perforation line place.Also might adopt identical cutting knife instruments cut and make the side cut of the other end have a pair of turn of bilge of answering two ends of packing container.

Preferably make side cut become the z font substantially.When the side cut turn of bilge being had enter the otch of end perforation line, can make and tear angular motion and be more prone to.Packing container can be tetrahedron packing container, parallelepiped pack container, wedge shaped packages container or non-collapsible form pillow packs container.

The present invention proposes a kind of knife apparatus, but sealing band in order to one packing between two packages before and after in the machine of producing the separation type packing container that the can consumable products uses, cutting, it is characterized in that: it has all edges, it comprises one first cutting edge section and with respect to one second cutting edge section of the first cutting edge section side travel, and this two cutting edges section interconnects by one the 3rd cutting edge section of extending with an angle between described two cutting edge sections, angle between the first cutting edge section and the 3rd cutting edge section is between 90 ° and 145 °, the cutting knife cutting edge also comprises one the 4th cutting edge section, it leaves the 3rd cutting edge section along the relative direction of side direction and extends, and the intersegmental angle of the first cutting edge section and the 4th cutting edge is between 90 ° and 145 °.

This knife apparatus can only just cut sealed-in coiled strip part by single job and not produce any waste material to obtain clamp clip between two packing containers of front and back.

About 120 ° of the intersegmental angle of the first cutting edge section and the 3rd cutting edge.

Each cutting knife cutting edge section preferably is positioned at same plane.One bed die in order in cutting process with the co-operating of cutting knife cutting edge, its available thermoset material is made.Thermoset material is preferably polyurethane.

But the present invention proposes the method for the packing container that a kind of production can consumable products uses, and comprising: feed reel laminated packaging material; The reel package material is carried out disinfection by application of disinfectant; Remove disinfectant from package material surface; Folding and vertical sealing packing are to form a pipe material; Wherein this container is made of the lamination tubular packaging material with relative two ends, this end is to produce by the continuous packing that sealing and incision are extended between two packages of front and back, wherein a perforation line strides across one jiao of extension of one of described end so that open container, it is characterized in that following steps: cut between two containers the packing between two weld seams in the sealing district, so that produce an edge, back of last container and a forward position of back one container simultaneously, wherein each corresponding side cut has a near turn of bilge that is arranged on the perforation line, thereby first section product can near one of described container of side cut partly extended, and one second section product can near another container of cutting edge is partly extended, and the side cut turn of bilge comprises that one enters the otch of the perforation line of end.

In an advantageous embodiments, one of side cut end of container broad is positioned on the end angular that has perforation line and makes this dihedral become a clamp clip.Or rather, turn of bilge can be positioned at through the side of sealed-in coiled strip the clamp clip end is positioned near the perforation line place.

Brief description of drawings

To do nonrestrictive explanation to the present invention with further reference to accompanying drawing below, among the figure:

Fig. 1 is a lateral plan, and the tetrahedron packing container as first embodiment of the invention is shown;

Fig. 2 is the transparent view of knife apparatus of the present invention, equipment in order to the cutting drum material to make packing container shown in Figure 1;

Fig. 3 is the elevation drawing of knife apparatus shown in Figure 2, and the cutting knife cutting edge is shown;

Fig. 4 is a lateral plan, and the knife apparatus that is under the serviceability is shown;

Fig. 5 is a lateral plan, and the parallelepiped pack container as second embodiment of the invention is shown;

Fig. 6 is a lateral plan, and the wedge shaped packages container as third embodiment of the invention is shown;

Fig. 7 is a lateral plan, and the non-collapsible form pillow packs container as fourth embodiment of the invention is shown.

Implement optimal mode of the present invention

Tetrahedron packing container 10 shown in Figure 1 belongs to coventional type basically, has two leak free

fin parts

11 and 12 and middle container products can part 13.One of four jiaos of container have perforation line 14, and perforation line partly sees through the laminated packaging material skin, but that inner barrier layer is kept perfectly is harmless.

In the present invention, fin part 11 has overhanging clamp clip 11a, and this clamp clip is positioned on the angle with perforation line 14.Clamp clip 11a produces during fin in cutting, the side cut part 11b of fin remainder, i.e. part beyond the side cut part 11c of clamp clip 11a, near or directly extend and seal edge sealing part 11 along weld seam 15.Side cut part 11b and 11c are interconnective by the side cut part 11d of a bending.

Junction between crimp part 11d and the side cut part 11b has the otch 16 that enters perforation line 14.Fin part 11 has wide short section of fin and the narrow long section of fin.

By adopting identical cutting knife 17 (Fig. 2 and 3 illustrates one of them), only once cut at the every end of container and do not produce the waste material of any packing.The packing of " excision " but are transformed into the fin part 12 on opposite now on the fin part 11 that has clamp clip, and this part has narrow short section of the wide long section of fin and fin.

The edge sealing remainder of indivisible bottom product this tip cut-off from container also will be housed from packing container excision clamp clip bight the time, and this indivisible bottom product is trapped within two of bridge joints between sealed-in container.So just changed the Corrosion Protection of this end of container.

Cutting knife 17 in order to the packing sealing band between two packages before and after the cutting in wrapping machine has the first linear portion 17a, and this linear portion is in order to cut not sealed-in part on the fin (being without sealed-in outermost portion on the edge sealing) along a straight line from the sealing part of fin (be positioned at package on product can part adjoiner).Cutting knife also has in order to reserve the second setting section 17b and the 3rd interlude 17c that comprises the cutting cutting edge 17d that is with angle of overhanging clamp clip at edge sealing one end, and the cutting cutting edge of band angle is in order to form the pre-tear line that cuts between clamp clip and linear portion.

Fig. 4 illustrates around the circumference of first revolving part 18 and makes four cutting knifes 17 that equal angles distribution shape is installed.The bed die 19 of respective numbers is done the installation of same way as around the circumference of second revolving part 20, thereby makes each cutting knife and base mould corresponding 19 co-operatings.

When meeting, cutting knife 17 and bed die 19 produce the back edge of last container and the forward position of back one container simultaneously with regard to cutting packing connecting strap 21.

But principle of the present invention certainly also applicable to the packing container of the consumable products of other types can shown in Fig. 5,6,7, be called successively the packing container 10 of TETRA BRIK, TETRA WEDGE and TETRAFINO (registered trade mark (RTM)) ', 10 ", 10 .

Packing container 10 ' (Fig. 5) be parallelepiped and have can part 13 corresponding to packing container 10, the product can part 13 of exceeding with end walls 25 ', the first side wall 26 and second sidewall 27 of comparing broad with the first side wall 26.

Packing container 10 ' have two the leak free fin parts 28 (one of them only is shown) that are similar to packing container 10

fin parts

11,12 parallel to each other.Each fin part 28 have on respective end walls of being folded in 25 base portion 29 be folded in corresponding two the first side walls 26 on, be substantially leg-of-mutton relative two bights 30.Have perforation line 14 of the present invention and overhanging clamp clip 11a one of in the bight 30, particularly as above at as described in the packing container 10.

Packing container 10 " (Fig. 6) be wedge shape and have ", a pair ofly stretch out and the isosceles trapezoid sidewall 32 of little limit and wall 31 adjacency own and a pair ofly stretch out and join with wall 32 and form the triangular side walls 33 of sphenoid 34 from wall 31 from wall 31 corresponding to the can part 13 of packing container 10 and the product can part 13 of exceeding with oblong diapire 31.Packing container 10 " have two the leak free fin parts 35 (only can see one of them among Fig. 6) that are similar to packing container 10

fin portion parts

11,12; (not shown) is folded on the wall 31 one of in the fin part 35; and another fin partly forms sphenoid 34 and have perforation line 14 of the present invention and overhanging clamp clip 11a, particularly as above at as described in the packing container 10.

Packing container 10 (Fig. 7) comprise corresponding to the can part 13 of packing container 10 and non-collapsible pincushion product can part 13 that exceed with relative two two the fin parts 36,37 that are similar to

fin part

11,12, one jiao of edge sealing part 36 has perforation line 14 of the present invention and clamp clip 11a, particularly as above at as described in the packing container 10.

The present invention is not limited by the illustrated embodiment fully and can does the change of a lot of modes within the scope of the appended claims.For example, can cutting knife be contained on the corresponding chain group without revolving part 18 and 21 drives cutting knife.Basically can when finishing cutting operation, finish the sealing operation in order to the solder sealer that forms package.

Claims

But a packing container that is used for the consumable products of can (10,10 ', 10 ", 10 ), by having two relative end fins parts (11,12; 28; 35; 36,37) lamination tubular packaging material constitutes, and the end fin partly is that the continuous packing between former and later two packages produce by sealing and incision, and wherein, a perforation line (14) strides across described both ends (11; 28; 35; 36) extend so that open container in bight one of, it is characterized in that: end fin part (11; 28; 35; 36) the side cut that has perforation line (14) has a turn of bilge (11d), thereby first section (11b) making side cut compares the product can part (13 of more close container with second section (11c) cutting edge; 13 '; 13 "; 13 ) extend, comparing with first section from the product can part of container second section (11c) far away of wherein cutting edge forms a clamp clip (11a) in order to the bight of opening perforation, side cut turn of bilge (11d) is arranged near the perforation line (14), and side cut turn of bilge (11d) comprises that one enters end (11; 28; 35; The otch (16) of perforation line 36) (14).
2. by the described packing container of claim 1, it is characterized in that: the side cut of the other end (12) has a pair of turn of bilge of answering.
3. by claim 1 or 2 described packing containers, it is characterized in that: cutting edge is z shape substantially.
4. by claim 1 or 2 described packing containers, it is characterized in that: it is a tetrahedron packing container (10).
5. by claim 1 or 2 described packing containers, it is characterized in that: it is a parallelepiped pack container (10 ').
6. by claim 1 or 2 described packing containers, it is characterized in that: it is a wedge shaped packages container (10 ").
7. by claim 1 or 2 described packing containers, it is characterized in that: it is a non-folding form pillow packs container (10 ).
8. knife apparatus, but in order to produce the separation type packing container (10 that the can consumable products is used, 10 ', 10 " the sealing band of one packing between two packages before and after cutting in the machine; 10 ); it is characterized in that: it has all edges; it comprises one first cutting edge section (17a) and with respect to one second cutting edge section (17b) of first cutting edge section (17a) side travel; and this two cutting edges section (17a; 17b) interconnect by one the 3rd cutting edge section (17c) with angle extension between described two cutting edge sections, angle between the first cutting edge section (17a) and the 3rd cutting edge section (17c) is between 90 ° and 145 °, the cutting knife cutting edge also comprises one the 9 four cutting edge section (17d), it leaves the extension of the 3rd cutting edge section (17c) along the relative direction of side direction, and the angle between the first cutting edge section (17a) and the 4th cutting edge section (17d) is between 90 ° and 145 °.
9. by the described knife apparatus of claim 8, it is characterized in that: this angle is about 120 °.
10. by the described knife apparatus of claim 8, it is characterized in that: each section of cutting knife cutting edge equipment is in same plane.
11., it is characterized in that by each described knife apparatus in the claim 8～10: be provided with a bed die (19) in order in cutting operation with the co-operating of cutting knife cutting edge, this bed die is to make with thermoset material.
12. by the described knife apparatus of claim 11, it is characterized in that: thermoset material is a polyurethane.
But 13. one kind produce the packing container that the can consumable products uses (10,10 ', 10 ", 10 ) method, comprising:

Feed reel laminated packaging material;

The reel package material is carried out disinfection by application of disinfectant;

Remove disinfectant from package material surface;

Folding and vertical sealing packing are to form a pipe material;

Wherein this container is by being with relative two ends (11,12; 28; 35; 36,37) lamination tubular packaging material (21) constitutes, and this end is to produce by the continuous packing that sealing and incision are extended between two packages of front and back, and wherein a perforation line (14) strides across described end (11; 28; 35; 36) one of one jiao extends so that open container, it is characterized in that following steps:

Cut between two containers the packing between two weld seams in the sealing district, so that produce an edge, back of last container and a forward position of back one container simultaneously, wherein each corresponding side cut has a near turn of bilge (11d) that is arranged on the perforation line (14), thereby first section (11b) of side cut partly extended near the product can of one of described container, and one second section (11c) cutting edge is near another container (10,10 ', 10 " product can; 10 ) is partly extended, side cut turn of bilge (11d) comprise one enter the end (11; 28; 35; The otch (16) of perforation line 36) (14).
14. by the described method of claim 13, it is characterized in that following steps: one of make in the broad side cut end of container to be positioned on the end angular that has perforation line (14) to make this dihedral become a clamp clip (11a).
15., it is characterized in that following steps: make turn of bilge (11d) with respect to sealed-in connecting strap lateral register, and the clamp clip end is stopped near perforation line (14) by claim 13 or 14 described methods.