CN101678937B - Packaging for food products, method and corresponding device - Google Patents

Abstract

An hermetic package for food products (P), such as confectionary products, chocolates, pralines, chocolate eggs, etc., including a wrapper of sheet' material airtight sealed (2) around the product (P) and having one, or preferably two, extremity portions (3) twisted bow-like according to a general candy-like configuration. The bow or each bow (3) has a distal edge (3a) with a zigzag patterned or other shaped incision (4) susceptible of providing a triggering point for the tearing of the wrapper. Preferably, the wrapping material is an oriented film.

Description

The packing, method and the corresponding intrument that are used for food

Technical field

The present invention relates to be used for the packing of food.

Background technology

When packaged food, must consider different needs.

Especially the needs of recognizing be to guarantee that product remains unchanged after packing as far as possible for a long time.In order to realize this purpose; The use of mobile package encapsulation package; In other words; VFFS/HFFS (being used for the abbreviation of Vertical or Horizontal Form Fill and Seal (vertically or horizontal versions is filled and sealing)) is known for a long time, also be used for small size food (as chocolate, candy, praline, or the like).File WO-A-99/58421 and EP-A-1593603 represent this technology.Back one file also show with terminal (Fig. 1) or vertically (Fig. 2) package combination line be provided with the possibility at edge in a zigzag, allow green phase for the packing of processing by sheeting itself longitudinally or transverse traces (trajectory) tear sheeting and unpack.

Also there is target to be to provide to have powerful research branch with the conventional sugar fruit packing (in other words, have the picture bow tie and twist one or two terminal packing of twisting with the fingers) of the improvement isolation characteristic of external environment condition.The representative of such branch is for example file GB-A-993981, US-A-5935686, EP-A-0816229, EP-B-1299285 or WO-A-02/22445.The solution of in EP-B-1477423, describing combines the outward appearance of gas tight seal characteristic and conventional sugar fruit package, drops on basically in the same branch.

Goal of the invention and content

As mentioning, under the situation of collation package that flows, usually green phase for packing itself longitudinally or transverse traces tear packing and unpack.Under the situation of candy class packing; Even when when guaranteeing the gas tight seal performance by modified in various manners; The user also often begins through turning on bow tie (one or more), rotate the core (packaged products is positioned at this place) of package itself, and unpacks.

Under two kinds of situation, product all possibly easily break away from from package, make the user be difficult to avoid this product not as fall with being willing to.The danger that product comes off is under following situation even more obvious: product be undersized (for example; Little sheet (pastille) or confectionary products); And/or when unpacking, customer's attention occupies (for example, when the customer walks) by other operation.

There is laterally otch in advance in solution such as the mobile bag solution of in WO-A-99/58421, describing-wherein; Can in fact solve the product problem that comes off; But there is adverse effect in they; Because they not only can reduce the visbility of preparatory otch itself, and owing to be provided on the welding area sealing of their infringement packings easily.

The purpose of this invention is to provide a kind of solution that can overcome such inconvenience.

According to the present invention, such purpose realizes that by means of a kind of packing this packing has the characteristic of narration in claim 1.Advantage expansion of the present invention is the purpose of dependent claims.The invention still further relates to a kind of corresponding packing implementation method and a kind of corresponding intrument.Claims are integral parts of the disclosure of the present invention that provides here.

In currently preferred embodiment; Except that overcoming above inconvenience about the general introduction of packing opening operation; The present invention allows the realization of the gas tight seal packing of " airtight " type: under the situation of this commercially produced product in the humid area; Be the characteristic of very significant, because it allows the isolation of product and surrounding environment.In addition, such technology also is provided as, and uses the migration of suitable film isolation from oxygen and fragrance.

Description of drawings

As unrestricted example the present invention will be described now.

Description is with reference to accompanying drawing, in the accompanying drawings:

Fig. 1 is an overall block diagram of describing a kind of packing of type here,

Fig. 2 is schematically illustrated in the standard of the enforcement of the packing among Fig. 1,

Fig. 3 and 4 is illustrated in the feasible order of opening of the packing among Fig. 1 and 2,

What Fig. 5 was illustrated in solution among the above-mentioned figure possibly be out of shape enforcement

Fig. 6 schematically is depicted as the method and apparatus that is implemented in the packing among Fig. 1 to 5 and uses.

The specific embodiment

Among each figure in the accompanying drawings, Reference numeral 1 refers to thin layer or the packing of sheeting as a whole, and this thin layer or sheeting are used for packaged food P, as for example confectionary products, candy, chocolate, praline or similar products.Should not be interpreted into for the explanation of these dimensional datas and to be limitation of the scope of the invention; Solution of the present invention also can be used for very undersized product P, is merely several millimeters confectionary products as for example length.And product P can be single or a plurality of, as for example shown in the EP-A-0814303.

Packing 1 is processed by thin layer or film wrapped material (will be in narration more as follows about it) basically, this material around product P roughly the U-shaped structure begin parcel, as schematically illustrated among Fig. 2.

Then, around product P shut line 2 is provided, this shut line 2 extends by general arch-like trajectory, thereby around product P.The end of above-mentioned potted line 2 (also can have certain-length) be arranged to the sheeting that collapses by U-shaped around product P unite part communicate (incorrespondence with).

Each end portion (once more with reference to Fig. 2) in the packing freak oil of so accomplishing stands to twist with the fingers motion (observing the arrow F in Fig. 2) with one or two terminal corresponding general twisting then; Thereby obtain having the packing 1 of roughly " candy shape " outward appearance of in Fig. 1, representing, middle body encirclement product P (being hermetically sealed by means of the existence of potted line 2) and two end portion 3 are twisted twist with the fingers the roughly form of bowknot shape.

In current more not preferred embodiment, not shown in the drawings, packing 13 places endways only has a bow tie.

The general realization standard of packing 1 described so far is corresponding substantially with the solution target of file EP-B-1477423; This document is quoted in preface part of the present invention: therefore, will do not further not described here by all elements shown in such prior art file, that describe or that can derive by any way.

The following fact is the key property of solution of the present invention: the distal side edge 3a of two bow ties 3 has zig-zag or zigzag trace; Rather than general linearity trace, this zig-zag or in a zigzag trace in each distal side edge 3a with a plurality of otch of V-shaped groove interruption-forming.Each of such part with V-shaped groove mouth can work to be used for the starting point that package is torn phenomenon, and this package is torn phenomenon and is used to make product P to break away from packing 1.

Order in Fig. 3 and 4 is represented, act on one of distal side edge 3a, and particularly from the V-shaped groove stomion of structure in a zigzag at the beginning, the package how 1 the user of wanting to unpack can start is gradually torn phenomenon.The former starting point place that mentions begins (this starting point general with 4 indication), and the effect of tearing is carried out along trace 40 (with dashed lines indication in Fig. 3, and in Fig. 4, replace be expressed as solid line), thereby confirms to pack 1 longitudinal tear gradually.

The test of being undertaken by the applicant shows; Advantageously, use " orientation film " thin slice lapping to accomplish packing 1, should have about the orientation direction of packing 1 by " orientation film " thin slice lapping along vertical aligning; In other words; On the direction of ideal axis, the lapping of packing is twisted around this ideal axis and is twisted with the fingers to form terminal bow tie 3, although this solution needn't unconditionally be taked (particularly under the situation that lapping exists as thin as a wafer).

Term " orientation film " is meant membraneous material (the typically plastic material in for example cyclenes copolymer (COC) and poly-vinyl), and this membraneous material stands the stretching on the longitudinal forward movement direction at extrusion press at production period (usually through extruding).The structure that such stretching makes membraneous material about on orientation direction maybe be more stable with after drawing: in other words, film after stretching, has higher enhanced stretch resistance than before standing to stretch.

With a kind of complimentary fashion, the orientation film material is easier to tear on the direction of orientation.In reality, film does not more tolerate the cutting trial so that cause tearing on orientation direction, and film stands these cuttings during its fabrication phase attempts.

Under any circumstance; If it is derived from the intrinsic characteristic of the film that is used for package; If perhaps the result promotes through the use of oriented film material, then all possibly find the following fact: in solution of the present invention, along the line 40 tear effect; This line 40 is from one of wide notch point of Z character wheel (for example among Fig. 3 with the starting point of 4 indications) beginning, and this is torn effect and expands with respect to packing end wise.All these processes (most of the time at least) do not relate to (if not the words to the degree that reduces relatively) and are tearing untiing of the bowknot shape part 3 that relates on.

Under the situation of solution of the present invention, tearing about packing of bow tie advanced along the cardinal principle vertical line, and do not cause the mark (marked) of bow tie to twist the sth. made by twisting motion.In addition, although tear line 40 can stand slight untiing to a certain extent through that bow tie 3 of its expansion, that the relative bow tie 3 that in the expansion of tear line, is not related to keeps basicly stable stubborn sth. made by twisting.

Available net result like this is presented among Fig. 4.In case major part is passed in along the line 40 effects of tearing carried out; And in fact pass the whole core (in fact being presented on the state among Fig. 4) of packing then, just might observe, product P is still found in the core of packing 1; Mode with enough stable with safe is contained in the stump of packing; This stump has roughly conchoidal form, and product remains in such shell this tear line by two the vertical edges of tear line with 40 indications; As schematically illustrating among Fig. 4, on the both sides of product P, extend.

Existence suggestion and permission customer with distal side edge 3a (one or more) of Z word or similar pattern; Even twisting under the situation of twisting with the fingers bow tie (one or more) existence; Also not through untiing bow tie (as the customer often carries out about common candy shape packing); But tear through what vertically cause, and unpack 1.Then, by means of bow tie, such tearing gradually takes place, and tears and expands this bow tie.

By this way; Can unpack (remembeing that this is packaged under the situation of the present invention is the gas tight seal air-tight package) and do not have the risk that the product of not expecting mentioned in preface part of the present invention is scattered, and if can not meet with and adopt according to the technology of file WO-A-99/58421 then the problem that possibly face.

Aspect this, advantageously observe following situation.

The evidence of being undertaken by the applicant---other characteristic be equal to (specifically; The material of parcel thin slice is identical with thickness)---for a kind of cardinal principle packing identical (but its each distal side edge 3a has straight-line pattern---this straight-line pattern is not torn starting point 4) with the packing that illustrates as an example here; Very general situation is; If do not apply the effort of highly significant, just can not tear in a longitudinal direction.

In addition, tear the existence of starting point,, the customer is made the hint of tearing packing 1 in a manner described like the starting point of tearing that provides by the Z word pattern on the 3a on the edge of.On the contrary, under the situation that the edge 3a with straight-line pattern exists, the customer attempts to unpack through untiing bow tie 3 inevitably: (see figure 3) in no case can obtain approaching for product P under this situation that operates in hermetically sealed packaging.

Identical test shows, the use of orthotype lapping had both helped the starting of tearing, and helps this to tear to stride across and twist the zone of twisting with the fingers bow tie and expand again.

And; Can confirm; When the length of the wrapping portion of twist being twisted with the fingers in order to form each bow tie (along vertically recording of packing; See Fig. 2) have when being included in 5 millimeters and the 5 millimeters length A that add between the X (length of product), can obtain best result, this length A is with respect to the length X of product P and extend.

Fig. 5 has highlighted the possibility that realizes distal side edge 3a, and this distal side edge 3a also has roughly pattern in a zigzag, but has the circular incision along outer perimeter, and has the V-notch along interior circumference, thus each starting point 4 that the package that is formed for packing is torn.

Therefore, can learn,, can adopt and anyly tear the structure of starting point 4 in order to form package for distal side edge 3a.

Fig. 6 be shown schematically in aforesaid each figure in the expression type packing possibly realize standard.

Specifically, can see that in the left side of Fig. 6 this lapping is processed by sheeting with the blank of 10 lappings that refer to, this sheeting collapses by U-shaped shape roughly, and this U-shaped structure is to open-top (think motion from left to right) ideally.

Allow the technology (beginning) of the realization of such U-shaped blank, in packing (flow-pack) packing method that flows, be known, thereby need not in this explanation from the rolling of sheeting.

Refer to Reference numeral 12 bulking properties and fill and sealing station (itself also being known type); In this filling and sealing station; Product P is inserted in the tubular blank 10, through the upper limb that does not also link together they is inserted in uniting in (loop) part of blank.With padding in phase, according to the operation of the method for the type of describing among the former file EP-B-1477423 that mentions, unit 12 forms potted lines 2, sealing line 2 provides gas tight seal around each product P in the blank that is inserted in sheeting.

Then; The hermetically sealed packaging that so obtains to cutting unit 14 (for example; Have interrupted or rotary cutter---itself also be known type) advance (advance axis usually after 90 ° of rotations with respect to it, this axis that advances is indicated with X10, and the selection of even now does not obviously force); This cutting unit 14 provides the cut-out of each packing, and this cut-out forms the distal side edge 3a with appreciiable saw-tooth like pattern in Fig. 1 to 4 (or similar pattern).

Then, operate (for example, according to the method for in file EP-B-1299285, describing) with the bow tie completion station that Reference numeral 16 refers to by known mode own, the end of each packing stands to twist to be twisted with the fingers, thereby terminal bow tie 3 is provided.

The product P of holding in the packing of accomplishing at this moment 1 is collected (usually through falling) then in container C.

Solution of the present invention can change in very wide scope.

For example, according to the embodiment of currently preferred forms, the solution that illustrates here is designed to; Around the seal feature of packing product P, that provide by potted line 2 closely around product P; The mouth thereby the opening that on distal side edge 3a, provides is sure in advance as already mentioned, can not damage sealing.Very naturally,, also can give terminal package encapsulation line (the extensive known standard according in the packaging type packing technique that flows is realized) with this function and accomplish, this terminal package encapsulation line limits the distal side edge 3a with Z word pattern.

Can learn by above-mentioned; Keeping under the principle unmodified condition of the present invention; With respect to for this content that provides as nonrestrictive example; In order to realizing that details of the present invention and embodiment can change widely, and do not break away from defined scope of the present invention in appending claims.Specifically, about constituting the material chosen of wrap film, different selections says it is feasible from principle at least, as use polypropylene (PP), poly-vinyl (PE), polyethylene terephthalate (PET), or the like film.Cyclenes copolymer of multilayer (COC) and vinyl all are proved to be particularly advantageous selection.The realization for solution of the present invention in the packaging field of the product of wide region of the membraneous material of these types all is desirable, and the size and the pattern of these wide region products are different, like sugarplum product, chocolate ball, pancake shape product.

Claims (21)

1. packing that is used for food (P); The thin slice that comprises lapping; The thin slice of this lapping seals (2) airtightly around at least one product (P), and is provided with the end portion (3) that at least one bowknot shape is twisted sth. made by twisting, and this bowknot shape is twisted the end portion (3) of twisting with the fingers and had distal side edge (3a); Wherein, said distal side edge (3a) has at least one starting point (4) that is used to tear package.

2. packing according to claim 1, wherein, said sheeting is made up of orientation film, this orientation film about said packing along portrait orientation.

3. according to claim 1 or the described packing of claim 2, wherein, said distal side edge (3a) has pattern in a zigzag, and this zigzag pattern has V-notch, the starting point (4) of said V-notch in order to be provided for tearing said package.

4. require 1 described packing according to aforesaid right, wherein, said distal side edge (3a) has pattern in a zigzag, and the outer perimeter of this zigzag pattern is that circular incision and interior circumference are V-notch, thereby is provided for tearing each starting point (4) of said package.

5. require 1 described packing according to aforesaid right, wherein, the structure that said distal side edge (3a) has is formed for tearing a plurality of starting points (4) of said package.

6. require 1 described packing according to aforesaid right, wherein, said package has potted line (2), and sealing line (2) extends by arch-like trajectory around said at least one product (P).

7. packing according to claim 6; Wherein, said package wraps up around said at least one product (P) with the U-shaped structure, makes said product (P) be accommodated in uniting in the part of said U-shaped structure; And wherein, the end of said potted line (2) communicates with the said part of uniting.

8. packing according to claim 1, wherein, the minimum length (A) that said at least one end portion (3) has equals the size (X) that 5 millimeters, extreme length (A) equal to add on 5 millimeters the product that is wrapped.

9. one kind is used for the method for in the package of gas tight seal sheeting (2), food (P) being packed; This sheeting (2) is around at least one product (P) and be provided with the end portion (3) that at least one bowknot shape is twisted sth. made by twisting; The end portion (3) that this bowknot shape twist to be twisted with the fingers has distal side edge (3a), and said method is included in the operation of at least one starting point (4) that is provided for tearing said package on the said distal side edge (3a).

10. method according to claim 9 comprises and uses the operation of orientation film as said sheeting that this orientation film has about the orientation direction of said packing along vertical aligning.

11. according to claim 9 or the described method of claim 10, be included in said distal side edge (3a) operation of pattern in a zigzag is set, this zigzag pattern has V-notch, this V-notch is in order to be formed for tearing each starting point (4) of said package.

12. method according to claim 9; Be included in said distal side edge (3a) operation of pattern in a zigzag is set; The outer perimeter of this zigzag pattern is that circular incision and interior circumference are V-notch, thereby is formed for tearing each starting point (4) of said package.

13. method according to claim 9 comprises making said distal side edge (3a) be configured to form to be used to the operation of a plurality of starting points (4) of tearing said package.

14. method according to claim 9 comprises the operation of accomplishing said potted line (2) around said at least one product (P) along arch-like trajectory.

15. method according to claim 14 comprises with the operation of U-shaped structure around the said package of said at least one product (P) parcel, makes said product (P) be accommodated in uniting in the part of said U-shaped structure; And make the end of said potted line (2) unite the operation that communicates of part with said.

16. device that is used at the package packaged food (P) of sheeting; This sheeting seals (2) airtightly around at least one product (P); And be provided with at least one bowknot shape and twist the end portion (3) of twisting with the fingers; This bowknot shape is twisted the end portion (3) of twisting with the fingers and is had distal side edge (3a), and said device comprises unit (14), and this unit (14) are in order to be provided for tearing at least one starting point (4) of said package on said distal side edge (3a).

17. device according to claim 16 comprises that this zigzag pattern has in order to be formed for tearing each starting point (4) of said package in order to the cutting unit (14) of pattern in a zigzag to be set on said distal side edge (3A).

18. according to claim 16 or the described device of claim 17; Comprise in order to the cutting unit (14) of pattern in a zigzag to be set on said distal side edge (3a); This zigzag pattern has along the V-notch of the interior circumference of the circular incision of outer perimeter and edge, thus each starting point (4) that is formed for tearing said package.

19. device according to claim 16 comprises the cutting unit (14) in order to the structure of a plurality of starting points (4) of on said distal side edge (3a), being provided for tearing said package.

20. device according to claim 16 comprises sealing unit (12), the sealing unit is in order to accomplish said potted line (2) according to arch-like trajectory around said at least one product (P).

21. device according to claim 20; Comprise forming tool; This forming tool is in order to wrap up said package according to the U-shaped structure around said at least one product (P); Make said product (P) be contained in uniting in the part of said U-shaped structure, said sealing unit (12) provides said potted line (2), and the end of sealing line (2) communicates with the said part of uniting.

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