CN1802291A

CN1802291A - Bags

Info

Publication number: CN1802291A
Application number: CNA028227328A
Authority: CN
Inventors: 菲利普·C·威瑟斯
Original assignee: INTERNAT CONS BUSINESS Pty Ltd
Current assignee: INTERNAT CONS BUSINESS Pty Ltd
Priority date: 2001-11-14
Filing date: 2002-11-14
Publication date: 2006-07-12
Also published as: WO2003042055A1; CA2466966A1; US20050084184A1; AUPR886901A0; EP1453736A1

Abstract

Disclosed is a bag ( 11 ), and a method of making the bag, having a welded end ( 12 ) and an open end ( 13 ) having a series of flaps or tie parts ( 14 ) formed thereon. The bag is formed from a tubular body folded upon itself along its longitudinal central region whereby no more than two gussets are formed along each longitudinal edge of the bag. A roll ( 10 ) of bags ( 11 ) is also disclosed in which the welded end ( 12 ) of one bag is joined by a line of weakness ( 15 ) to the flap or tie parts ( 14 ) of the next bag in the roll.

Description

Sack

Technical field

The present invention relates to a kind of sack, especially but not exclusively relate to the plastic bag that is used for processing of waste, rubbish etc., it can be used to 1 waste treatment as garbage in the household, and is used for holding fruits, vegetables and supermarket article, is become product bag in addition.

The present invention be more particularly directed to the sort of sack of renovating (flap) that is formed with at opening part, this renovating can be loaded onto thing at sack and be tied by bundle, and the opening of sealing sack prevents that thing is scattered out in handling process subsequently.This renovates also to provide by renovating and tightens shaking hands that part forms, therefore sack can be carried, for example be placed into the sack of rubbish container from the kitchen to what family provided, or be used for from the cashier belongings in supermarket or to the sack of the cashier belongings in supermarket by local government agency.When tightening, renovate the space that also can save in the sack, therefore can the economical with materials cost and cut the waste.

Background technology

Disclose a kind of plastic bag of such form in the Australian patent specification the 611639th, it may also may not constitute the part of common practise.This plastic bag is made of former and later two faces, and these two faces combine along three straight flanges, forms opening to form open end on the 4th limit.The open end of face has one is that example is traversed depression and the projection that sack forms, these projections formed can with hand tighten together with sealing sack opening renovating or binding (tie) part, as mentioned above.

In above-mentioned patent specification, sack by rolling provide, the end of the face of two sacks is weld togethers in volume, and a weak line is formed between two weld seams, therefore when two sacks were drawn out from the sack of rolling, they can be separated from each other.The other end of these sacks (open end) is connected to another adjacent sack, but has another the weak line that has defined depression and projection, and these depressions and projection are renovated for two sacks provide when two sacks are separated from each other.

When elongated open from the container of sack volume or seam were extracted sack out gradually, these sacks were by the weak line that alternately forms at closed end or open end, and branch comes one by one.When a sack with the volume in next sack when their open end is separated, be retained in the volume in the container open end renovate from container outstandingly, and this renovates and provides much easy way to catch next sack subsequently and it is pulled out container.But when being separated on the weak line of a sack subsequently between two bag closed end of rolling up in next sack and the container, not having to produce provides much easy way to catch sack subsequently subsequently and it has been pulled out renovating of container.In this case, the sealed end of sack subsequently can tend to scrolling or be moved back into the inside of container, makes to be difficult to locate and to catch subsequently the closed end of sack that it is extracted out from container.

The plastic bag of another kind of form is disclosed in the US Patent specification the 6183132nd (Simhaee).According to our understanding, this plastic bag does not also form the part of common practise.We did not know before being disclosed in the plastic bag of plastic bag in the Simhaee document and rolling.In the time of in this Simhaee document is reported by the international search among the international patent application PCT/AU01/00788 that is listed as us, we just know for the first time.This Simhaee document discloses a kind of plastic garbage bag of rolling, for the tubulose of angle brace sheet (gusset) is housed completely, and longitudinal folding to form a star seal construction.Single sack is separated by strapping wires that form bag open end and the weld seam that forms bag closed end.A longitudinal edge in each sack below strapping wires is formed with cut-away area, when a single sack is separated from volume and opens, forms four and can be used as renovate (knot) of fastening sack.What the specification sheets of Simhaee document and claim required is the sack of rolling, therefore, has comprised each sack in the volume, have an independent longitudinal folding vertical limit, and another makes four angle brace sheets be folded to form vertical limit of three angle brace sheets.When formation is used for forming the incision tract of renovating or tying, the effect of three angle brace sheets that form from four angle brace sheets along a vertical edge contraction presents the folded part that is difficult to volume and aligns, be separated from each other owing to a lot of folding needs simultaneously, this sack is unfavorable for that also client uses, be difficult to open, and when putting into bin, tangle easily.Because the quantity of angle brace sheet, the structure of this sack has also reduced the volume of sack.Only form in addition by two thin layer bag materials, separately folding along this bag vertical limit, caused a tender spots at the sack sealing end, may be under the effect of this sealing end rubbish weight in bag, or leak owing to the action of gravity of rubbish was lost efficacy.

Summary of the invention

Therefore, the objective of the invention is, a kind of sack is provided, and the sack volume, can reduce the problem that relates to sack and sack volume in the above-mentioned patent specification in Min. ground at least.

According to the present invention, a kind of sack with welding end and open end is provided, this open end has a series of formation recess that replaces and projection thereon, described projection provides renovates or binds part, wherein sack is once to be formed along its longitudinal center zone is folding on tubular body at least by tubular body, and is no more than two angle brace sheets along each vertical limit formation of sack.

Because having four layers or more multi-layered bag material, sack overlaps each other and weld together, so, avoided when only having two-layer bag material to overlap each other generation in the bottom fragility of vertical side of sack, each vertical limit along sack forms no more than two angle brace sheets simultaneously, and this is with regard to the involved problem of three or more angle brace sheets above having reduced.

The present invention has expected that also a kind of formation has the method for the sack of welding end and open end, this open end has a series of formation alternatively distributed recess and projection thereon, described projection provides renovates or binds part, wherein a tubular body along its longitudinal center zone folding at least it oneself once, and form no more than two angle brace sheet along each vertical limit of sack.

The present invention has also expected the sack volume, and described sack conforms to above-mentioned qualification, and the projection of the next sack of the welding end of one of them sack in being rolled up therewith by weak line links to each other.

Described volume is installed in its container, the end that the projection that makes each continuous sack is always stretched out from the container of sack volume, therefore, when the weak line of fwd sack between sack is separated, be easy to catch, do not retract to trend in the container and do not have next sack end.Another advantage of the present invention is, when being the form of rolling, these sacks only link together on the top of projection, therefore the remainder of these ends of sack at the weak line place of passing whole end be open and separate, needn't be as the situation of disclosed sack volume in Australian patent specification the 611639th, these ends just will become the open end of sack later on.

Description of drawings

Three embodiment of the present invention will be in conjunction with the accompanying drawings, wherein:

Fig. 1 is the transparent view of sack volume according to a preferred embodiment of the invention;

Fig. 2 is the lateral plan of sack volume among Fig. 1; And

Fig. 3,4,5,6,7,8,9 and 10 is the transverse cross-sectional profile scheme drawings by the bag material pipe, and shows four kinds of diverse ways and this pipe can be folded and form bag according to the invention or sack volume.

The specific embodiment

With reference to the accompanying drawings 1 and 2, sack volume 10 wherein is provided, each sack 11 has a welding end 12 and an open end 13, and this open end has a series of formation alternatively distributed recess and projection thereon, and described projection provides renovates or binds part 14.The welding end of a sack is connected to the projection of the next sack in volume by a weak line 15 or renovates 14 top.

This volume is installed in (not shown) in its container, make the projection of each continuous sack or renovate 14 ends of always stretching from container, and when the weak line 15 of fwd sack between sack is separated, catch easily, and can not make the end that produces next sack trend towards retracting in the container.Another advantage of the present invention is, sack is only in projection or renovate 14 top and link together, and the remainder of these ends of sack at the weak line place of passing whole end be open and separate, unlike the disclosed sack volume of above-mentioned patent specification, these ends just can be opened later on.

With reference to figure 3, be to form according to the sack of four preferred embodiments of the present invention and sack volume by a pipe 20 that flattens, pipe 20 is for plastics and use the type of conventional bags use.

In first embodiment, it is folding in succession that pipe 20 is pressed the fold sequence shown in Fig. 4 and Fig. 5, that is to say, outer ledge part 20a at first inwardly is folded in the remainder of pipe, but be positioned at opposite both sides, as shown in Figure 4, this pipe is folded sack or the sack volume that folds with the warp that produces as shown in Figure 5 along its longitudinal centerline, by arrow shown in Fig. 4 subsequently.Form required otch 13 and weld seam 12 then, simultaneously, under the situation of sack volume, form weak line 15.

In a second embodiment, pipe 20 is folding in succession by the fold sequence that is illustrated among Fig. 6 and Fig. 7, just as shown in Figure 6, outer ledge part 20a is at first on the remainder of inherent pipe, but be positioned at the same side, this pipe is folded with folding sack or the sack of warp that produces as shown in Figure 7 along its longitudinal centerline, by arrow A shown in Fig. 6 and rolls up subsequently.In one the 3rd other embodiment, thereby the folded tube 20 that is illustrated among Fig. 6 is rolled up by folding in the opposite direction folding sack or the sack that produces as shown in Figure 8 of arrow B among Fig. 6.And then once form required otch 13 and weld seam 12, simultaneously, under the situation of sack volume, also form weak line 15.

As shown in Figure 9, this sack along its longitudinal middle part zone folding it oneself once so that the opposite side 20b of this sack be placed on one side near, and the first bending line 20c is formed on a relative side.

This pipe folds so that the first bending line 20c is placed near the of sack limit 20b and forms the second bending line 20d more in succession along its zone line.

Form otch 13 and the weld seam 12 that needs again, simultaneously, under the situation of sack volume, also formed weak line 15.

Claims

1, a kind of sack, have welding end and open end, this open end has a series of formation alternatively distributed recess and projection thereon, described projection provides renovates or binds part, wherein, described sack is once to be formed along its longitudinal center zone is folding at least by a tubular body, and, along no more than two of the angle brace sheet of each vertical limit formation of sack.

2, sack according to claim 1, wherein, tubular body is folding once, makes along at least once folding other end that covers sack of each longitudinal edge.

3, a kind of method that forms sack, this sack has welding end and open end, this open end has a series of formation alternatively distributed recess and projection thereon, described projection provides renovates or binds part, wherein a tubular body is folding at least once along its longitudinal center zone, no more than two of the angle brace sheet that forms along each vertical limit of sack.

4, the method for formation sack according to claim 3, wherein, the outer ledge of tubular body part is at first inwardly crossed the adjacent domain of remainder of tubular body and folding towards the line of centers of tubular body, the outer ledge part is in opposite both sides, and tubular body is folding along its longitudinal centerline then.

5, the method for formation sack according to claim 3, wherein, the outer ledge of tubular body part is at first inwardly across the adjacent domain of the remainder of tubular body and folding towards the line of centers of tubular body, the outer ledge part is in an identical side, and tubular body is folding along its longitudinal centerline then.

6, the method for formation sack according to claim 5, wherein, tubular body is folding on a side opposite with folded sides edge part along its longitudinal centerline.

7, the method for formation sack according to claim 5, wherein, tubular body is folding on a side identical with folded sides edge part along its longitudinal centerline.

8, the method for formation sack according to claim 3, wherein, tubular body is folding along its longitudinal centerline, and tubular body is folding again along the longitudinal centerline of previous folding tubular bag then.

9, according to the method for any one described formation sack in the claim 3 to 8, wherein, after tubular body is folding, form the welding end of sack and the recess and the projection of bag open end.

10, a kind of sack of producing according to any one described method in the claim 3 to 9.

11, a kind of sack volume, described sack is according to defined sack in the claim 1,2 or 10, wherein, the projection of next bag open end was connected in the welding end of a sack was rolled up therewith by a weak line.

12, a kind of sack is in conjunction with Fig. 1 to Fig. 3 and Fig. 4 and Fig. 5 basically, or Fig. 1 to Fig. 3 and Fig. 6 and Fig. 7, or Fig. 1 to Fig. 3 and Fig. 6 and Fig. 8, or the sort of sack described in front of Fig. 1 to Fig. 3 and Fig. 9 and Figure 10.

13, a kind of method that forms sack is in conjunction with Fig. 1 to Fig. 3 and Fig. 4 and Fig. 5 basically, or Fig. 1 to Fig. 3 and Fig. 6 and Fig. 7, or Fig. 1 to Fig. 3 and Fig. 6 and Fig. 8, or the method for the sort of formation sack described in front of Fig. 1 to Fig. 3 and Fig. 9 and Figure 10.

14, a kind of sack volume is in conjunction with Fig. 1 to Fig. 3 and Fig. 4 and Fig. 5 basically, or Fig. 1 to Fig. 3 and Fig. 6 and Fig. 7, or Fig. 1 to Fig. 3 and Fig. 6 and Fig. 8, or the sort of sack volume described in front of Fig. 1 to Fig. 3 and Fig. 9 and Figure 10.