CN103298711A

CN103298711A - Packaging pouch

Info

Publication number: CN103298711A
Application number: CN2008800154642A
Authority: CN
Inventors: 丹尼斯·吉贝尔
Original assignee: 3G
Current assignee: 3G
Priority date: 2007-05-10
Filing date: 2008-05-13
Publication date: 2013-09-11
Anticipated expiration: 2028-05-13
Also published as: EP2160341B1; CN103298711B; WO2008152247A3; FR2915963B1; EP2160341A2; US20110058755A1; FR2915963A1; JP5166516B2; BRPI0810316A2; ES2540677T3; JP2010526731A; WO2008152247A2

Abstract

It is an object of the invention to improve the strength of a packaging pouch (2) for products such as wet wipes. For this purpose the invention involves adding an upper gusset connecting the front and rear faces of the packaging pouch and attaching the flap to this upper gusset through a slit made in the front face of the packaging pouch. As an illustrative embodiment, the packaging pouch (2) is generally envelope-like, having in particular a rear face (4) and a front face (6), the front face (6) being provided with a dispensing window which can be closed by a flap (8), and the upper edges (4a, 6a) of the rear face (4) and front face (6) being bonded to the inner layer of an upper gusset (12); which upper gusset (12), flap (8) and front face (6) are all joined together.; Also, the upper edge (6a) of the front face (6) has at least one slit (22) through which at least part of the inner layer of the upper edge (8a) of the flap (8) is bonded onto a part of the inner layer of the upper gusset (12).

Description

Packaging bag

Technical field

The present invention relates to a kind of packaging bag, this packaging bag is used for holding and allocated product, for example wet tissue, this wet tissue is similar to has the form of folding of sheet, and be deposited in the inside of packaging bag, yet this packaging bag can be held also and particle distribution shape or powdery product.

The present invention relates generally to field of product packaging, and more specifically, relate to the packing of impregnated carrier (supports impr é gn é s).

Background technology

In background technology, known European patent n ° 1 224 589 has described a kind of packaging bag for wet tissue, this packaging bag has the general shape of envelope (enveloppe), it has the distribution window that is covered by lid stickiness or that can paste again, wherein, this distribution window is covered by the transverse sealing band, and this transverse sealing band allows the part of the internal layer of lid and the outside face of envelope are connected together, in order to guarantee to cover the good fix distributing on the window.

In this scheme, the existing problems when front of lid and packaging bag connects together.In fact, when packaging bag is filled, the packaging bag projection.Therefore, be difficult to lid is sealed on the outside face of envelope, perhaps be difficult in maintenance sealing in the cyclic process of opening and sealing.

According to prior art, known equally, document WO 07/002430 has been described a kind of packaging bag, and this packaging bag is equipped with lid, and this lid covers and distributes window and have last corner plate (soufflet).Yet lid is not described in detail and seems to improve the impregnability of product for the fixed form of packaging bag shell.Especially, this lid has the danger that comes off.

On the other hand, but the use with synthetic film (film) of multilayer of hot weld internal layer (polyethylene) and printable skin (PVC, polypropylene, PET) also makes the seal operation of internal layer on the outside face of shell of lid complicated, and provide bad result, this possibility of result causes coming off when being applied to the too big time lid of this stress that covers.

Summary of the invention

The purpose of this invention is to provide a kind of improvement to this packaging bag, so that convenience and improvement lid are to the sealing of shell.For this reason, the present invention designs to add and goes up corner plate, and this corner plate connects the front and back of packaging bag, and the present invention's design is connected lid on the corner plate by the otch on the front that is arranged on packaging bag (d é coupe).

For this reason, the present invention mainly provides a kind of packaging bag, it has the general shape of envelope, described packaging bag especially comprises back and front, described front is provided with the distribution window, described distribution window can be closed by cap seal, and the upper limb of described back and front is sealed on the internal layer of corner plate, and described corner plate, described lid and the described front of going up is connected as a single entity.On the other hand, the upper limb of described front has at least one otch, and by described otch, at least a portion of the internal layer of the upper limb of described lid is sealed on the part of internal layer of described corner plate.

The existence of last corner plate can convenient cap and the seal operation of the upper surface of envelope, even when packaging bag is filled.In addition, this structure can seal the internal layer of lid and the internal layer of last corner plate, and this makes the formation of synthetic film allow to improve the impregnability of assembling.

Should be noted that the skin of the different parts (going up corner plate, front, back or lid) that form packaging bag is corresponding to the surface that forms the packaging bag shell.On the contrary, when packaging bag was assembled, the internal layer of these parts was corresponding to the face that is positioned at packaging bag inside, under the situation of lid 8, corresponding to the face towards the packaging bag inner orientation.

According to specific embodiment:

The part to be sealed of the internal layer of the upper limb (8a) of-described lid (8) scribbles the sealing lacquer;

The part to be sealed of the internal layer of the upper limb (8a) of-described lid (8) does not have any stickiness device.

In these modification, the part of lid that should be sealed does not have a stickiness or stickiness is neutralized.Therefore, when the internal layer of welding (soudant) multilayer film, improved the welding quality of lid and envelope basically.Therefore, the packaging bag that so obtains does not have the danger that lid comes off.

Preferably, the otch of front is continuous.

Advantageously, the otch of front is 3/4ths of packaging bag width basically.

According to an advantageous embodiment, described lid has two pre-otch from the upper limb of described lid, described two pre-otch limit the middle section of described lid together, and the spacing between the described pre-otch is half of length of the sealing area of described lid basically, preferably the length of described sealing area 2/3rds to 3/5ths between.

These pre-otch can be used as (inviolabilit é) system that cautions against stealing, and in fact, when packaging bag was opened, pre-otch is torn and therefore becomes to be discovered easily.

Preferably, when described lid sticked on the described front, described pre-otch was located at the both sides of described distribution window.

Advantageously, described lid has at least one stickiness limit, and described stickiness limit has the stickiness coating, and described stickiness coating can repeatedly be opened and stickup more described stickiness limit.

Preferably, described go up corner plate and described lid, the front passed by European hole (trou europ é en) with the upper limb back.

Description of drawings

With reference to accompanying drawing, by reading following specific embodiment, other features and advantages of the present invention will display, wherein:

Fig. 1 is the transparent view according to packaging bag of the present invention ready for using;

Fig. 2 is the exploded drawings of the embodiment of the packaging bag among Fig. 1;

Fig. 3 a and 3b are according to the front elevation of the embodiment of the packaging bag of Fig. 3 and back view, and this packaging bag has European hole;

Fig. 4 is the embodiment according to the packaging bag of second feature of the present invention.

The specific embodiment

Fig. 1 and Fig. 2 show first embodiment according to packaging bag 2 of the present invention, and this packaging bag is formed by film, and described film constitutes back 4, front 6, lid 8, following corner plate 10 and the last corner plate 12 of packaging bag 2.

But these films be multilayer and comprise hot weld internal layer (for example polyethylene), isolate interlayer (for example aluminium) and by the skin of making such as the plastic material of PVC, polypropylene or PET printable (by screen printing, photogravure, aniline flexographic printing etc.).Arrange that according to this only internal layer is heatsealing each other.

Next 4 and front 6 be approximately rectangle.When the use location, each in them has straight

upper limb

4a, 6a and straight

lower edge

4b, 6b, and two slight curving lateral edges 4c, 6c.Next 4 and the lateral edges 4c of front 6, the internal layer of 6c is welded to one another.Next 4 and the upper limb 4a of front 6, the internal layer of 6a is welded on the internal layer of corner plate 12.And, the lower edge 4b of back 4 and front 6, the internal layer of 6b is welded on down on the internal layer of corner plate 10.

Front 6 comprises distributes window 14, this distribution window to allow to grasp continuously the product that is deposited in packaging bag 2 inside.Distribute window 14 to have incline 14c, 6 upper limb 6a disperses and connects together by fillet and last rib 14a described incline towards the front.Advantageously, the geometric configuration of this distribution window 14 allows to open under the situation of the outward appearance of the front 6 of not damaging packaging bag 2 and shape and covers 8.

The lateral edges 6c of front 6 is welded on next 4 the lateral edges 4c.The upper limb 6a of front 6 and

back

4,4a and

lower edge

6b, 4b are welded on respectively on the internal layer of corner plate 12 and following corner plate 10.

The function of lid 8 is the distribution windows 14 that cover the front 6 of packaging bag 2.For this purpose, and in order to ensure the leak tightness of packing, lid 8 major parts at it are coated with glue or the binder of can reset (repositionnable), can be coloured if necessary.This glue or this binder allow to carry out continuous opening or closure, keep good sealing property simultaneously around distributing window 14.

According to another embodiment, glue only is coated on the peripheral edge that distributes window 14, in order to reduce the cost of product.Preferably, lid 8 also has and grasps tongue piece 16, and this extracting tongue piece makes lid can be easily 6 take off from the front.

In this first embodiment, lid 8 also comprises two pre-otch 18, and these two pre-otch arrange perpendicular to the upper limb 8a of lid 8.These pre-otch 18 extend to the welding interface of this lid 8 from lower edge.

Advantageously, the interval of pre-otch 18 is defined so that in a single day covering 8 sticks on the front 6 of packaging bag 2, and pre-otch 18 is positioned at the both sides of distributing window 14.Therefore, the part that only is included in two lids between the pre-otch 6 is opened from the front.Therefore, even the interval of these pre-otch 18 is selected as when packaging bag is very protruding, the core of lid 8 leans against on the plane domain of packaging bag 2.

Equally preferably, these pre-otch are with respect to the middle rotational symmetry of lid, and lid 8 and front 6 or on the weld seam (soudure) of corner plate 12 locate, the interval of pre-otch 18 is corresponding to 2/3rds of this fusion length.Therefore, does not bear and the mechanical strees that covers 8 open and close circular correlation the end of weld seam.Therefore, the danger of weld seam disengaging obviously reduces.

According to specific embodiment, pre-otch 18 is not straight and has oblique or crooked part.Therefore, can change the size of covering 8 opened surface.

Fig. 2 more specifically shows the exploded drawings of the packaging bag 2 among Fig. 1, and wherein, front 6 has the continuous otch 22 on the upper limb that is positioned at front 6.Replacedly, otch 22 can be interrupted.

Ideally, this otch 22 is 3/4ths of the width of packaging bag 2.The thickness of this otch 22 is slightly less than the thickness of the weld seam between front and the corner plate, thereby, how no matter otch 22, always the front is sealed on the corner plate 12.

The height of the upper limb 8a of lid 8 is corresponding to the height of the otch of front 6.In this modification, the part of lid that will be soldered does not have stickiness, or stickiness is neutralized, and perhaps stickiness does not hinder sealing.Therefore, the internal layer of the upper limb 8a of lid 8 is welded on the internal layer of corner plate 12 by the otch 22 of front 6.

Because the internal layer of the internal layer of last corner plate 12 and lid 8 is by polyethylene or can make by compatible hot weld material, the heatsealing quality of lid 8 and last corner plate 12 is enhanced.

In this embodiment, the thickness of weld seam is 7 millimeters, and the thickness of otch 22 is 4 millimeters, and therefore, at otch 22 places, the upper limb 6a of front 6 is welded on the corner plate with 3 millimeters thickness.

On the other hand, according to this embodiment, following corner plate 10 and last corner plate 12 have two tabs (volet).Yet last corner plate 12 and following corner plate 10 can also have accordion structure and therefore comprise more than two tabs.

According to specific embodiment, otch 22 can be interrupted (for example with opening, zigzag etc.), in order to share the stress of tearing at lid 8 places that are applied on the weld seam.

Front elevation and the back view of Fig. 3 a and 3b second embodiment that first embodiment of expression and Fig. 1 and Fig. 2 is close respectively.

Yet in this second embodiment, the upper limb 6a of front 6 has the thickness of 15mm, and otch 22 has the thickness of 8.5mm, cuts European hole 24 in packaging bag in order to allow under the situation of the sealing that does not change the internal layer that cover 8 upper limb 8a.

Preferably, this hole, Europe 24 is positioned in the cut line place of the upper limb 6a of front 6, so as described European hole 24 pass corner plate 12 and cover 8, the upper limb 8a of front 6 and

back

4,6a, 4a.

Preferably, realize before in the European hole 24 of cutting that is assembled in of front 6 and back 4 and last corner plate 12.

On the other hand, should be noted that in this embodiment that the internal layer of the upper limb 8a of lid 8 also partly is welded on the front 6.For this reason, lid 8 upper limb 8a (8 hermetic units on the case surface of packaging bag are covered in expression) replacedly can be:

-there is not reducible binder;

-having reducible binder, its characteristic is not destroyed the quality of sealing;

-having reducible binder, it is covered by the sealing lacquer, and the sealing lacquer can neutralize and be arranged on reducible glue or the binder that covers on 8 the internal layer.The sealing lacquer can be based on the lacquer of heat seal mateiral, and this heat seal mateiral can seal the polyethylene layer of the MULTILAYER COMPOSITE film on the front 6 effectively.Therefore reduce the danger that lid comes off.

Therefore, by with above same mode, the upper limb 8a (the salable part of representing described lid 8) of lid 8 internal layer does not have binder, this binder has the danger of the welding quality on the weld seam part 6a that changes the packaging bag front 6 that lid covers.

The invention is not restricted to described and illustrated embodiment.Invention can be implemented for example in the packaging bag 2 of corner plate 10 under not having.Another possible embodiment (although its advantage is less slightly) is no longer in 6 gabarit in front otch 22 to be set, but 6 positioned inside otch in front.This embodiment allows to save binder.

In addition, according to another feature of the present invention shown in Figure 4, the skin of the upper limb 6a of front 6 can have sealing area 20, is sealed with the part of the internal layer that covers 8 upper limb 8a in the sealing zone.

Claims

1. a packaging bag (2), it has the general shape of envelope, described packaging bag especially comprises back (4) and front (6), described front (6) is provided with the distribution window, described distribution window can be by lid (8) sealing, upper limb (the 4a of described back (4) and front (6), 6a) be sealed on the internal layer of corner plate (12), it is characterized in that, the described corner plate (12) of going up, described lid (8) and described front (6) are connected as a single entity, and it is characterized in that, the upper limb (6a) of described front (6) has at least one otch (22), by described otch, at least a portion of the internal layer of the upper limb (8a) of described lid (8) is sealed on the part of internal layer of described corner plate (12).

2. packaging bag according to claim 1, wherein, the part to be sealed of the internal layer of the upper limb (8a) of described lid (8) scribbles the sealing lacquer.

3. packaging bag according to claim 1, wherein, the part to be sealed of the internal layer of the upper limb (8a) of described lid (8) does not have any stickiness device.

4. according to each described packaging bag in the claim 1 to 3, wherein, the otch (22) of described front (6) is continuous.

5. according to each described packaging bag in the claim 1 to 4, wherein, the otch (22) of described front (6) be basically described packaging bag (2) width 3/4ths.

6. according to each described packaging bag in the claim 1 to 5, wherein, described lid (8) has two the pre-otch (18) from the upper limb (8a) of described lid (8), described two pre-otch limit the middle section of described lid (8) together, and wherein, spacing between the described pre-otch (18) is half of length of the sealing area of described lid (8) basically, preferably the length of described sealing area 2/3rds to 3/5ths between.

7. packaging bag according to claim 6, wherein, when described lid (8) sticked on the described front (6), described pre-otch (18) was positioned at the both sides of described distribution window (14).

8. according to each described packaging bag in the claim 1 to 7, wherein, described lid (8) has at least one stickiness limit, and described stickiness limit has the stickiness coating, and described stickiness coating can repeatedly be opened and stickup more described stickiness limit.

9. according to each described packaging bag in the claim 1 to 8, wherein, described go up corner plate (12) and described lid (8), it is described front (6) that (8a, 6a 4a) are passed by European hole (24) with upper limbs described back (4).