CN1253534A - Liquid plastic film pouch with inner straw and machine and method of making same - Google Patents

Abstract

A liquid product carrying plastic film pouch (10) having a straw (12) free-floating in the liquid product (11) is described. The liquid product (11) contained within the inner chamber (13) of the pouch occupies from about 60 % to about 90 % of the volume of the inner chamber (13) of the pouch and a portion of air from the remaining volume is evacuated in sufficient quantity to permit the side walls (14, 15) of the pouch to be collapsed against one another when the pouch is grasped by the hand of a user person. By collapsing the side walls (14, 15) together the straw (12) located within the liquid can be grasped and manipulated to puncture the plastic film pouch (10) to extend a portion (12') of the straw (12) exteriorly of the pouch whereby to extract liquid therefrom. The pouch (10) is made of a multilayer resin film having an inner sealant layer (26) formed of a linear low density ethylene-octene copolymer or very low density ethylene copolymer (octene or other copolymers) such that when the straw punctures the film, the inner sealant layer (26) forms a membrane about the straw which exhibits a self-sealing behavior so as to prevent leakage in the punctured region as liquid is extracted from the pouch (10) through the straw (12). The machine and method of fabrication is also disclosed.

Description

Topping up plastic film bag and the manufacturing equipment and the method for band internal straw

Technical field

The present invention relates to a kind of sealed plastic film bag, it is holding the suction pipe of an a kind of liquid and a free-floating, wherein discharge the space of air in bag, so that handle bag, the sidewall that is squeeze bag is to catch suction pipe and suction pipe is penetrated bag, and in addition, bag is to be made by multilayer film that have an inner sealant layer, inner sealant layer has the self sealss ability in penetration region around suction pipe, thereby provides a sealing around suction pipe.

The invention still further relates to and be used to make equipment and the method that inside has the sealing topping up bag of free-floating suction pipe, particularly relate to topping up at bag and in the cycle suction pipe inserted apparatus and method in the bag.

Technical background

Now know, can utilize sealed plastic bag shaping liquid packing container, in the liquid that one of them suction pipe shape article or drain pump are maintained in the bag and free-floating holds in bag.As an example, in the US Patent of announcing on May 1st, 1,973 3,730,336, such topping up bag has been described.Yet this packing container exists following shortcoming, promptly for the reason of the liquid that holds in the bag with the amount of the air of capturing, is difficult to handle bag to catch suction pipe and to make suction pipe penetrate bag.This manipulation often causes breaking of bag.And, also have the important point to be, the liquid in the frozen-pack if desired then should have the volume of additive incrementation, because extra volume can allow liquid to expand when freezing in the bag.

Wish that this bag has the suction pipe with enough rigidity, polypropylene suction pipe for example, thereby do not need suction pipe one end cut sth. askew and to sting broken bag, need on suction pipe, not have any device that is used to grasp yet, so that suction pipe is mobile in bag, and this device also will bring other shortcoming to the automatic liquid feeding of bag.Also wishing to provide such liquid package container, and it highly cleans, and by not making to the plastics of institute's receiving fluids bad flavor of transmission (tart flavour), particularly more wants so when liquid needs long-time the preservation.In addition, wish that also the shelf life of this packing is longer, thereby make this packing and the liquid that holds can be preserved long time before using.It would also be desirable to provide a kind of plastic film bag, it can form a sealing around suction pipe when bag is penetrated by suction pipe, and can resist the bump in loading and unloading and transportation.

Also know the plastic sheeting topping up bag that to make the suction pipe that is wherein holding a free-floating.Some manufacture methods bag that is shaped is like this arranged, it is thin-film sheet of horizontal folding, and before sealing forms, a suction pipe is placed in the lower folded part of film band, to produce an open ended bag, holding a suction pipe in the bag and be ready to charge into liquid.Yet, utilizing vertical molding machine to make this when bag in vertical mode, particularly continuously during dispensing liquid, this task has just become especially difficulty, because in dispensing liquid process continuously, must when liquid charges into bag suction pipe be placed in the bag.This just several problems occurred, and one of them is to be issued to just by the mode in the bag of topping up synchronously and with suction pipe with the sealing cycle of bag.Another problem is, will seal open top with after forming sealing bag when the open ended bag that is shaped from plastic barrel is placed in, and guarantee to prevent that suction pipe from stretching in the seal jaw.Another problem is to make the suction pipe providing gear can adapt to the shaping and the fluid filled devices of bag.Also wish will to discharge in the space of portion of air from be formed at bag in the manufacturing process of these sealing topping up bags, this space is necessary when expanding at liquid freezing.

Summary of the invention

Therefore, a feature of the present invention has provided a kind of plastic film bag, and it can overcome the above-mentioned various shortcomings of prior art and satisfy above-mentioned various requirement.

Another feature of the present invention has provided a kind of sealed plastic film bag, and it is equipped with a kind of liquid and the suction pipe of a free-floating in liquid, and wherein, has in the space of air from the inner chamber that is contained in bag of scheduled volume to discharge.

Another feature of the present invention has provided a kind of sealed plastic film bag, it is equipped with a kind of liquid and the suction pipe of a free-floating in liquid, and wherein, plastic sheeting is multilayer film that have an inner sealant layer, this inner sealant layer has firm self sealss ability around suction pipe in the penetration region of bag, thereby provides a sealing for suction pipe.

Another feature of the present invention has provided a kind of method of the plastic film bag that an a kind of liquid and a suction pipe are housed of being used to be shaped, and it has overcome the above-mentioned various shortcomings of prior art basically and can satisfy above-mentioned various requirement.

Another feature of the present invention has provided a kind of equipment and method of sealing topping up bag that the suction pipe of a free-floating is equipped with in inside that be used to be formed in, and it has overcome the above-mentioned various shortcomings of prior art basically.

Another feature of the present invention has provided a kind of equipment of sealing topping up bag that the suction pipe of a free-floating is equipped with in inside that is used to be formed in, wherein, in the forming process of bag, suction pipe by one transmit tube guiding in bag, transmit and under the effect of gravity by transmitting a tube free fall.

Another feature of the present invention has provided a kind of equipment of sealing topping up bag that the suction pipe of a free-floating is equipped with in inside that is used to be formed in, and wherein, suction pipe inserts in the bag in the moving period of the plastic film tube that forms bag.

Another feature of the present invention has provided a kind of equipment of sealing topping up bag that the suction pipe of a free-floating is equipped with in inside that is used to be formed in, wherein, the plastic film tube that of being shaped is launched and contact with seal jaw by side direction continuously in topping up and sealing cycle, thus will air in certain amount from be formed bag clearance envelope in discharge.

Another feature of the present invention has provided a kind of method of sealing topping up bag that the suction pipe of a free-floating is equipped with in inside that is used to be formed in, wherein, when bag was stretched to a sealing head by topping up and tube, suction pipe transmitted tube by one and is introduced in the liquid.

Another feature of the present invention is that a kind of method of sealing topping up bag that the suction pipe of a free-floating is equipped with in inside that is used to be formed in also is provided, and wherein, in the forming process of bag, discharge in air space in the bag.

According to above-mentioned feature, the present invention from one widely the aspect a kind of plastic film bag that is used for the receiving fluids goods is provided.This bag film has opposed side walls, and described sidewall seals to form a leak free inner chamber at a periphery place.At least a portion at least one sidewall is made by transparent plastic material so that can make sight line enter inner chamber.Suction pipe with predetermined stiffness freely is placed in the inner chamber.A kind of liquid containing is in inner chamber and occupy about 60% to about 90% volume of inner chamber.There is the air of q.s to be discharged from the inner chamber in the remaining volume, like this, when sidewall by toward each other during flattening, liquid can move in inner chamber, so that catch the suction pipe in the liquid, and suction pipe can be penetrated plastic film bag, thereby make the part of suction pipe reach the outside of bag with imbitition from bag.

According to another aspect widely of the present invention, provide a kind of method of the plastic film bag that an a kind of liquid and a suction pipe are housed of being used to be shaped.This method comprises following each step.Move a film band that has the opposed side walls that is arranged in juxtaposition to a topping up and sealing station.Profiled edge sealing in topping up and sealing station is to form a bag that has open top and determine an inner chamber.Suction pipe with predetermined stiffness is inserted in the inner chamber by open top.Afterwards, the liquid that will have a predetermined injects inner chamber by open top, with about 60% to about 90% the volume that occupies inner chamber and form a un-occupied space above liquid.Afterwards, on the part of un-occupied space, opposed side walls is flattened together, so that air is discharged from open top.Afterwards, apical margin on two sidewalls arranged side by side is sealed near open top, thereby form a bag, in the bag liquid and the suction pipe of a free-floating in liquid are housed, and have the air of sufficient quantity to be discharged from so that the opposed side walls of bag by toward each other during flattening, liquid can move in bag, thereby can catch the suction pipe in the liquid, and suction pipe can be penetrated plastic film bag, make the part of suction pipe reach the outside of bag with imbitition from bag.

According to another aspect widely of the present invention, provide the equipment of the sealing topping up bag of the suction pipe that a kind of inside that is used to be shaped is equipped with a free-floating.Comprise bag building mortion, a topping up mechanism that is used for a kind of liquid is charged into bag of being used for the antiseepage plastic sheeting is made bag in this equipment, and one is used for the suction pipe conveyer that before bag sealing suction pipe of guiding enters bag.

According to another aspect widely of the present invention, provide the method for the sealing topping up bag of the suction pipe that a kind of inside that is used to be shaped is equipped with a free-floating.This method comprises following each step: fold and seal a plastic sheeting sheet material, to form the film cylinder of a band open top.Liquid is charged in the film cylinder, simultaneously, a suction pipe is passed through in the liquid in the suction pipe transmission tube importing plastic film tube.Move plastic film tube to a seal jaw place downwards, at this, one open top of topping up film cylinder section be shaped a sealing to form sealing topping up bag.Sealing also forms another just root edge sealing on the tube section of topping up.

Brief Description Of Drawings

To make an explanation to a preferred embodiment of the present invention by accompanying drawing below, accompanying drawing comprises:

Fig. 1 is a transparent view, has shown a plastic film bag constructed according to the invention, and wherein a kind of liquid and a suction pipe are contained in the inner chamber that is formed by sealing bag;

Fig. 2 A is the planar view of the plastic film bag among Fig. 1, and wherein, bag all is made of transparent plastic material;

Fig. 2 B is a planar view, has shown by an opaque rear wall and the plastic film bag that part antetheca opaque, partially transparent constitutes;

Fig. 3 is a transparent view, has shown that the suction pipe that how to make in the plastic film bag punctures a bight of a sidewall, thereby the part of suction pipe is come out with imbitition from bag;

Fig. 4 is a transparent view, how to have shown that in the mode of partial cross section the sidewall with bag flattens to catch suction pipe;

Fig. 5 is an exploded drawings, has shown a seal dissepiment, and it constitutes around suction pipe by the sealing layer that the film in-to-in has the self sealss ability;

Fig. 6 is a cross sectional drawing, has shown the composition of multi-layer resinous film;

Fig. 7 is the lateral plan of a simplification, has shown manufacturing process and the air exhaustion and the bag leak free mode of the plastic film bag that liquid and suction pipe are housed;

Fig. 8 is the side cross-sectional views of a simplification, has shown further how bag is shaped, particularly air how from bag the sealing of discharge and top and bottom how to form;

Fig. 9 is the transparent view of a simplification, has shown an equipment that constitutes according to the present invention, and it is used for topping up and a suction pipe is inserted in the liquid that is contained in the topping up bag;

Figure 10 is a transparent view, the topping up bag of the suction pipe that has free-floating that having shown is shaped according to the present invention;

Figure 11 is the scheme drawing of a simplification, has shown that diaphragm is shaped as vertical plastic barrel to make the mode of bag shown in Figure 2;

Figure 12 is the transparent view of a simplification, has shown suction pipe storage of the present invention and providing gear;

Figure 13 A is the section drawing of a simplification, has shown the structure of seal jaw;

Figure 13 B is a view that is similar to Fig. 1 3A, but shown a seal jaw of having revised, and is used for device that air is discharged from the bag that is formed to provide one;

Figure 14 is a schematical top view, has shown the structure of plastic barrel interlock and travel mechanism;

Figure 15 A to 15C is a plan sketch, has shown the distribution process of suction pipe in the plastic bag that is formed.

The detailed description of most preferred embodiment

Please refer to each accompanying drawing, particularly Fig. 1, wherein, sealed plastic film bag of the present invention is substantially with 10 expressions.A kind of flowing product 11 and a free-floating suction pipe 12 are contained in the inner chamber 13 of bag 10.Plastic film bag has opposed sidewall 14 and 15, and they seal at peripheral 16 places.The bag that herein shows 10 is made by transparent material, thereby can see free-floating suction pipe 12 and flowing product.Certainly, membraneous material also can print pattern, and guarantees simultaneously to see in its inner chamber.Have a printing target area 17 herein on the front side wall 14 of Xian Shiing, be used to point out the user, preferably in this thorn broken bag.Certainly, suction pipe also can sting broken bag in other zone, but is preferably each bight.

Be contained in flowing product 11 in the bag and occupied about 60% to about 90% volume of inner chamber 13.From the remaining volume of inner chamber, there is the air of q.s to be discharged from, thereby can liquid moved, with the convenient suction pipe that grasps by described sidewall is crimped onto each other.Preferred construction is, but is not that what to only limit to this is that flowing product occupies about 84% of cavity volume.In addition, bag is preferably dimensioned to be, but is not to only limit to this, can hold capacity and be 3 ounces to 24 ounces flowing product.

Shown in Fig. 2 A and 2B, plastic film bag 10 be rectangle and have a bottom sealing 18, opposed side seal 19 and 19 ' and top seal 20, they are around opposed side walls 14 and 15, thereby constitute a rectangle transparent film bag.Should be pointed out that bag film is not must be transparent fully,, scribble a kind of pigment on the rear wall 15, to provide an opaque pure colored wall as in Fig. 2 B.On the other hand, can go up the opaque color of printing in the part 14 ' of antetheca 14, and retain a bulk of horizontal transparent section 14 " in order to see the suction pipe 12 in the bag.Certainly, guaranteeing to see under the prerequisite of suction pipe position, also can be across transparent section 14 by transparent section " add printed article.

Please refer to Fig. 3 to 5 now,, promptly how suction pipe is punctured bag film with discharged liquid explaining the using method of plastic film bag.As shown in Figure 4, because air discharges from plastic film bag, therefore can pinch bag film and opposed side walls 14 and 15 is being flattened, to catch suction pipe 12 with a hand with finger.Like this, the user can move to an end of suction pipe and be adjacent to 17 places, target area shown in Figure 3.The user catches a folding corner region 23 of bag and it is being leaned suction pipe free end 12 ' along arrow 24 with the finger 22 of another hand and bends downwards, so that target area 17 or its near zone are pulled to free end 12 ', thereby make free end 12 ' puncture film and from bag, expose, as shown in Figure 5.

For at sidewall of suction pipe 12 " and punctured hole 25 between have good sealing property, adopted a kind of multi-layer resinous membraneous material, it has an inner containment layer 26.This multilayered film material as shown in Figure 6, this material is made up of a kind of lamination or the plastic sheeting of extruding applying, it comprises an inner containment layer 26, and the material of this inner containment layer is selected from low or very low-density ethene one octene copolymer of a kind of line style or a kind of metallocene linear low density polyethylene.Preferably, sealing layer has 0.900g/cm ³Or above density.Also have at least one different outer polymer 27 or a kind of additive on the resin film that co-extrusion produces, it is preferably a kind of multi-layer resinous film, and is mixed by high pressure polyethylene or other linear, low density ethylene-octene copolymer.As needs, can also have a pigmentary resin core 28, so that bag has foregoing opaque rear wall 15.Core can be a kind of isolated material, for example nylon, PET (terephthalic acid polyglycol ester), PVDC (polyvinylidene chloride), PP EVOH (polypropylene ethylene-vinyl alcohol resin).Multi-layer resinous film like this makes the structure of bag have good shock resistance and flexibility in case stopping leak leaks, and has low heat-sealing initial temperature so that the high speed sealed film bag.The preferred bag that obtains is firm and do not have defective, that is to say do not have the aperture or the folding line that can cause bag to leak.

Because bag is normally made on vertical shaping topping up closed type wrapping machine, so the hot sticky performance of film is extremely important.In multilayer film shown in Figure 6, different resins or additive on one or more layers, have been made up, so that bag 10 obtains specific performance properties.As mentioned above, the importance of this multilayer film is its inner containment layer 26.Metallocene low density ethylene-octene copolymer is preferably adopted, and this is because it can not transmit strange taste, and when promptly flowing product held the long period in bag, bag can not transmit tart flavour to liquid.Can also prolong the storage life of flowing product in bag like this.Other polymeric materials as EVOH (ethylene-vinyl alcohol resin) or PET (terephthalic acid polyglycol ester), also can be used to bag that isolation performance is provided.In addition, LLDPE (linear low density polyethylene (LLDPE)) butylene or LDPE (low density polyethylene (LDPE)) can be used in the core, with cost-cutting at a low price.

Please refer to Fig. 5, be appreciated that because inner containment layer 26 has roughly the self sealss performance around suction pipe, so its form one around sidewall of suction pipe 12 " sealing film 29, spill from punctured hole 25 to prevent liquid.By squeeze bag the liquid in the suction pipe is discharged, thereby liquid suction passage 12 is extruded, perhaps, liquid also can sucking-off from the free end 12 ' of suction pipe.

Please refer to Fig. 7 and 8 now, holding the manufacturing process of the bag 10 of an a kind of flowing product 11 and a suction pipe 12 to explain the present invention.Bag 10 is shaped on a vertical shaping topping up closed type package packing machine, and this machinery does not draw, and wherein two diaphragms 14 and 15 are arranged in juxtaposition the position but are separated from each other, and as shown in Figure 7, and is pulled in the opposite sides thereof of a topping up pipe 30.After bottom sealing 18 and side seal 19 and 19 ' shaping well, flowing product 11 flows out from the discharge end 31 of topping up pipe.Like this, two plastic resin diaphragms 14 and 15 are moved to a sealing and liquid filliing station 32 places shown in Fig. 7 and 8 side by side.In this station, side seal 19 and 19 ' is formed out, and bottom sealing 18 then is shaped out when the end sealing of bag, as described later.Each sealing can utilize pulse or continuously heating technique be shaped, perhaps also can adopt any other sealing system easily, as the ultrasonic sealing system.

By shaping side seal 19 and 19 ', just can form a bag that has open top 33.Afterwards, suction pipe 12 is introduced in the bag of open end, as described later by space shown in Figure 8 34 by a suction pipe eductor.Afterwards, the topping up pipe promptly sends to the predetermined amount of liquid goods in open ended the bag, as previously mentioned, this flowing product will charge into bag cavity volume about 60% to about 90%, preferred, but be not to only limit to this place, can be 84% of cavity volume.In the topping up process, bag can also by the clamping of clip (not shown).In case liquid begins to send, topping up pipe 30 promptly begins to shrink, and arrives the highest liquid level of label 35 expressions until liquid.Perhaps, also can after finishing, topping up march forward to the bag of open end.In case withdrawal of topping up pipe or bag are fed, a pair of clamp arm 36 and 36 ' will in a zone, clamp the bag, this zone as shown in Figure 7, between dotted line 37, and be separated by with the open top 33 of bag, air can be discharged from the space of 35 tops, liquid level surface like this.Then, heat-sealing head 38 and plate 39 will be to moving together thereafter, thus seal up the apical margin part 40 of open ended bag, and the bottom sealing 18 of the next bag that is shaped simultaneously.In the drawings, one group of perforation tooth 41 is housed on the heat-sealing head 38,, like this, can after this bag be separated from the bag that row are formed, as shown in Figure 8 in order between sealing 18 and 20, to form a perforation line 42.

Please refer to Fig. 9 now, shown a vertical bag make-up machine 100 among the figure, it comprises a shell 111 and has a granting conveyer 112 that is positioned at below the shell, and this granting conveyer 112 is used to provide the topping up bag that this machine shape goes out.Owing to be contained in the liquid of bag in 113 for the human consumption, therefore machine must be remained in the clean environment, for this reason, vertical bag shaping mechanism 114 is positioned at shell 111 inside, door 115 for the air turnover is housed on the shell 111, door has transparency glass plate 116 on 115, so that can see machine intimate, with the operation of observing machine and realize any fault that mechanism may occur.A control desk 117 is used to regulate and control each interior mechanism of machine.Suction pipe is provided hopper 118 and is placed in expediently on the roof 119 of shell 111, and synchronously suction pipe 120 is fed to the top that a suction pipe is provided tube 121 from hopper, and tube 121 then stretches to or extends through top 119.A liquid tank 122 or a supply pipe (not shown) supply liquid to one and provide in topping up pipe or the jet pipe 123.

As shown in figure 10, the vertical molding machine 100 sealing topping up bag 113 that is shaped is holding roughly predetermined amount of liquid 124 and the suction pipe 120 of a free-floating in liquid in the bag.The process that is configured as bag from a membraneous material, there is a transverse sealing 125 to be shaped across one of two side plates 126 of bag 113, also have lateral margin opposite each other 127 and 128 also to be shaped, ora terminalis 129 and 129 ' does not need sealing, this is to form by the folding plastic thin-film sheet because of them, as described later.Ora terminalis 129 ' can constitute the top of bag.Described in the referenced patent application, have printed article on the side plate 126 usually as previously mentioned.

Please refer to Figure 11 now, briefly shown the structure of vertical bag shaping mechanism 114 among the figure.Comprise a plastic film tube forming head 130 in this mechanism, this forming head collects the opposed side edge portions 131 and 131 ' of a film sheet material 132, this film sheet material is pulled out from a volume membraneous material (not shown), and forming head is placed in the inside of shell 111 or outside and guided by guide wheel 133 expediently.This forming head is known in the present technique field, and its purposes is under a guiding refers to 134 guiding, guides side edge portions 131 and 131 ' around 130, thus pleated sheet and overlap side edge portions.Can form a hollow plastic tube 135 like this.As shown in the drawing and with reference to Figure 14, can see, hollow plastic film cylinder 135 around topping up jet pipe 123 and with topping up jet pipe 123 side by side suction tube extending provide tube 121 and be shaped.Hollow plastic film cylinder 135 by a tube interlock driver train 137 along downward direction feeding or the pulling shown in the arrow 136.As shown in figure 14, comprise a stationary support frame 138 in the tube interlock driver train, supporting opposed double-type film interlock drive wheel 139 and 139 ' in the bracing frame 138.The every pair of drive wheel 139 and 139 ' interlock respectively the lateral border part 140 and 140 ' of film cylinder 135.A drive motor (not shown) drives these and takes turns, these take turns the opposed side edge portions 140 and 140 ' that film cylinder 135 in the interlock that then rubs, thereby film is pulled out from bracing frame 138 downwards, and the predetermined distance of pulling out can be regulated by the operating speed and the time of each drive wheel.137 of tube interlock driver trains moved between the opening and closing cycle of sealing mechanism 141, and sealing mechanism 141 will introduce below.

Please continue with reference to Figure 11, after sealing mechanism 141 started, vertical sealing mechanism 142 meeting synchronization actions were with the overlap joint lateral border 131 and 131 ' along predetermined length sealing film sheet material 132.Like this, the open ended hollow plastic film cylinder that below vertical sealing mechanism 142, is shaped.Vertically sealing mechanism is known in the present technique field, explains no longer in detail herein.Topping up pipe or liquid are provided on the jet pipe 123 and are had a liquid granting end 123 ', and this liquid granting end 123 ' is positioned at a distance, sealing mechanism 141 top.Push rod 143 and a 143 ' expansion cartridge that constitutes by a pair of outside biasing is fixed on the opposite sides thereof of topping up jet pipe near liquid granting end 123 ', and by an outside resiliency urged of spring device (not shown).All have smooth bent outer ends 144 on the described push rod and thickness less, with the medial extremity 145 of interlock hollow plastic film cylinder 135.The effect of push rod is to keep tube to provide tensioning and expansion in lower end and transverse sealing device 141 regions at the liquid of topping up jet pipe, to prevent fold occurring in sealing place.

As shown in FIG. 13A, transverse sealing mechanism 141 is made of a pair of jaw 146 and 147, jaw 147 forms a baffle plate and can move towards jaw 146, have a seal dissepiment 148 on the jaw 146, have a potted line 149 to stretch in seal dissepiment 148 back and form a sealing across plastic barrel 135.On the inside face 147 ' and 146 ' of jaw 147 and 146, have a pair of clamping element 150 respectively, in order to the top end part of interlock below topping up bag 113 ' and just be formed bags 113 " the bottom part of last square tube section.Can see that owing to these sealing heads stretch out from the jaw inside face, so they can also extrude little air in the space of the liquid level 124 ' top of liquid 124 from bag 113 ' when closure.

A kind of modification that has shown jaw 146 and 147 among Figure 13 B has a pair of cavity on the inside face 146 ' of jaw 146 among the figure, i.e. a following cavity 152 and a upper plenum 153.Following cavity is darker than upper plenum, and the shape of these two vertical cavitys makes them can hold vertical flange or bar 154 and 155 respectively.The distance that lower flange 154 is stretched out from the inside face 147 ' of jaw 147 is greater than another flange 155.Its reason is, when jaw 146 and 147 closures, along with the opposed walls of plastic film tube is crushed, lower flange 154 can extruding air in a flash before another flange 155 is snapped to the top of bag wall from space 151, afterwards, potted line 149 will touch the wall that is crushed to form sealing.155 of upper flange are used to realize the clamping of bag and flatten operation.The important point is when liquid is continuously supplied hollow by jet pipe, catch the lower end of bag above sealing head.

Please refer to Figure 12 now, to explain the structure and the operation of suction pipe storage and connecting gear.As shown in figure 11, it is straight tubes that suction pipe transmits tube 121, and it is gone up suction pipe receiving end 121 ' from one and is stretched over one and provides end 121 down ".As showing in detail among Figure 12, it is reservoir vessels reinforced from the top that suction pipe is provided hopper 118, and it is made by transparent plastic material and has opposed parallel side wall 160 and an opposed end wall 161.The top of hopper is roughly rectangular, and its size makes it to be enough to hold a plurality of suction pipes of arranging along the almost parallel direction 120.The bottom on rectangle top has an infundibulate hypomere 162, enters a granting throat 163 that is positioned at hypomere 162 bottoms in order to the guiding suction pipe.Suction pipe in throat 163 with the arrangement in parallel side by side of single-row 164 form in scheming.Be formed with a suction pipe near hole 165 in constituting two sidewall extensions 166 that are separated by of providing throat 163 at least one.Should also can be formed on the opposite side wall 166 near the hole, when obstruction or fault take place in throat region, can be by touching suction pipe near the hole.

The transmitting device that push rod 167 by plunger actuation constitutes is housed in addition.Push rod 167 is fixed on one and is used to make the axially movable piston cylinder 168 of push rod.Push rod moves back and forth with the pressure of 40 to 60 lbs.Have a suction pipe contact jaw 169 on the push rod, and the size of push rod makes it to pass a discharge orifice 170 that is formed in granting throat 163 bottoms, thereby can contact the end of a bottom suction pipe 120, this suction pipe hit granting throat 163 at a high speed and to enter in the guide tunnel 171.Because push rod 167 extends through discharge orifice 170, therefore, in providing throat, be arranged in the suction pipe that is discharged from above the suction pipe and can not fall into discharge orifice 170 because the circular cross section push rod that this moment, discharge orifice 170 was very similar to suction pipe in occupation of.Piston cylinder 168 also with 141 synchronous operations of transverse sealing mechanism.

As shown in figure 12, guide tunnel 171 is made of two opposed side walls 173 and a crooked end wall 172, makes it to enter with the orientation that keeps suction pipe and transmits in the tube 121.Crooked end wall 172 has crooked shape, so that suction pipe transforms to a vertical position and is being directed entering the open top 121 ' that suction pipe transmits tube 121 from a level attitude that is arranged in discharge orifice 170, falls under gravity in the bag then.As shown in the figure, oscillating plate 174 is placed in the infundibulate hypomere 162 and is adjacent to the top of providing throat 163, makes it to be adjacent to and provides throat's almost parallel and arrangement to adjust suction pipe.

Though do not draw, it is contemplated that, can provide between the open top 121 ' that the discharge orifice 170 of hopper 118 and suction pipe transmit tube 121 at suction pipe and a carrying is installed and discharge turret mount.Have four suction pipe reception cavities on the turret mount, they are 90 degree arrangements at interval each other, and push rod 167 can push bottom suction pipe 120 in the suction pipe reception cavity.Then, turret mount will replace, and promptly rotate 90 degree, and simultaneously the suction pipe clamping that is loaded be put in place.When the suction pipe reception cavity rotates through 270 degree and when arriving a vertical position, fixing device or suction pipe holding device will unclamp, be in the locational suction pipe of 270 degree and fall into the open top 121 ' that suction pipe transmits tube 121 thereby make.

Please refer to Figure 15 A to 15C now, Figure 15 A particularly, can see, suction pipe transmits the suction pipe granting end 121 of tube 121 " be positioned at liquid and provide on the sufficiently high position, apical margin 137 ' top of the liquid granting end 123 ' of jet pipe 123 and jaw 137; thereby be enough to make suction pipe 120 to be injected the liquid 124 ' from transmitting tube 121, liquid 124 ' is then fast from by the plastic film tube portion 113 of topping up " rising.As previously mentioned, when jaw 137 opened, plastic film tube 135 was pulled down with a predetermined speed, this speed with enter hollow plastic film cylinder or bag 113 " amount of liquid coordinate mutually, approximately can form a bag each second.Like this, after suction pipe 120 is placed in the bag that is being shaped, the action of pulling hollow plastic film cylinder 135 will cause suction pipe freely to tilt towards topping up jet pipe 135, shown in Figure 15 B.Because bag is less than one second be shaped within the kind (charging into liquid in about 75% the volume) in bag, so this action is quickish.Along with the inclination of suction pipe, with the bag 113 that is formed " the top be determined out, and provide sufficient space for the jaw 146 of sealing mechanism 141.

Now method of operation is summarized, as shown in figure 10, a topping up bag that has the suction pipe of a free-floating is shaped out by following step, promptly transmit a plastic sheet around a tube forming head, to form the film cylinder of a band open top, liquid can inject film cylinder from open top by a topping up jet pipe 123.Simultaneously, a suction pipe is being directed transmitting tube 121 and be discharged into charging in the liquid in the bag that is formed in a plastic film tube by a suction pipe.Along with plastic barrel is pulled down, suction pipe will tilt, thereby clean out the space for seal jaw, described jaw is used for an open top formation sealing of topping up film cylinder section, to form a topping up sealing bag, simultaneously, again for another just by root edge sealing that is shaped of topping up tube section.Suction pipe is to be sent to a loading position from a suction pipe storage hopper, at this, the suction pipe change of direction transmits of tube and goes up the suction pipe receiving end to enter suction pipe, and it is a straight tube that suction pipe transmits tube, and suction pipe passes suction pipe and transmits tube and enter in the bag that is formed under the effect of gravity.Plastic barrel is continued to remain on tension, and closed in this state opposed walls and air discharged the space in bag.The sealing of leakproof lateral margin is formed out, to constitute sealing bag.Also have a fixing device on the sealing jaw, in order to further its foregoing clamping function is discharged and realized to air from the inner space of the bag that is formed.

If any obvious modification that preferred embodiment described herein is carried out belongs within the scope of appended claims, can think that then scope of the present invention has covered these modifications.

Claims (37)

1. plastic film bag, it is used for the receiving fluids goods, above-mentioned bag film has opposed side walls, described sidewall seals at the periphery place to form a leak free inner chamber, at least a portion at least one above-mentioned sidewall is made by transparent plastic material so that can make sight line enter above-mentioned inner chamber, suction pipe with predetermined stiffness freely is placed in the above-mentioned inner chamber, a kind of liquid containing is in above-mentioned inner chamber and occupy about 60% to about 90% of above-mentioned cavity volume, from the remaining volume of above-mentioned inner chamber, discharge and have the portion of air of q.s, like this, when above-mentioned sidewall by toward each other during flattening, aforesaid liquid can move in above-mentioned inner chamber, so that catch the above-mentioned suction pipe in the aforesaid liquid, and above-mentioned suction pipe can be penetrated above-mentioned plastic film bag, thereby make the part of above-mentioned suction pipe reach the outside of above-mentioned bag with imbitition from above-mentioned bag.

According to claim 1 the bag, wherein, the aforesaid liquid goods occupied above-mentioned inner chamber above-mentioned volume about 84%.

3. according to the bag of claim 1, wherein, in a top corner regions of an outside face of above-mentioned bag, have cue mark, the free end of above-mentioned suction pipe that will penetrate above-mentioned bag with the prompting user is in alignment with this.

4. according to the bag of claim 1, wherein, above-mentioned bag is made into certain size to hold 3 ounces to 24 ounces aforesaid liquid.

According to claim 1 the bag, wherein, above-mentioned plastic sheeting is a kind of multilayer film, and it contains an inner containment layer and at least a different outer polymer or additive, and above-mentioned inner containment layer is a kind of low density copolymer or polyethylene that can not transmit tart flavour.

6. according to the bag of claim 5, it is characterized in that wherein, above-mentioned inner containment layer is selected from the low or very low-density ethylene copolymer of a kind of line style or a kind of metallocene linear low density polyethylene.

7. according to the bag of claim 6, wherein, above-mentioned inner containment layer has 0.900g/cm ³Or above density.

According to claim 5 the bag, wherein, above-mentioned multilayer film by line style low or very low density polyethylene (LDPE) or metallocene PE and high pressure polyethylene other line style is low or very the batch mixing of low density ethylene one octene copolymer constitute, so that bag has good shock resistance and flexibility and prevents to leak, above-mentioned multi-layer resinous film also has low heat-sealing initial temperature, thus but the above-mentioned bag of at high speed sealing.

According to claim 5 the bag, wherein, the above-mentioned inner containment layer of above-mentioned multi-layer resinous film constitutes a barrier film, because the yield point of above-mentioned inner containment layer is not exceeded, therefore above-mentioned barrier film has firm self sealss performance around above-mentioned suction pipe in above-mentioned penetration region.

10. according to the bag of claim 6, wherein, above-mentioned ethylene copolymer is octene or other copolymer.

11. equipment, it is used for making sealing topping up bag, above-mentioned topping up bag has the suction pipe of a free-floating, comprise in the said equipment and be used for the antiseepage plastic sheeting is made the bag building mortion of bag, a topping up mechanism that is used for a kind of liquid is charged into above-mentioned bag, and one is used for the suction pipe conveyer that before above-mentioned bag sealing suction pipe of guiding enters above-mentioned bag.

12. according to the equipment of claim 11, wherein, above-mentioned suction pipe conveyer is a transmission tube, above-mentioned suction pipe transmits from above-mentioned tube under the effect of gravity, and above-mentioned tube is provided end under having one, and this time provided end and be placed in above-mentioned bag with a desired location.

13. according to the equipment of claim 12, wherein, above-mentioned transmission tube is a straight tube, this straight tube is gone up the suction pipe receiving end from one and is stretched over the above-mentioned end of providing down.

14. equipment according to claim 12, wherein, the said equipment is a vertical bag make-up machine, it has a topping up jet pipe that is vertically oriented, this topping up jet pipe is positioned at the plastic film tube of a band sealed bottom, above-mentioned topping up jet pipe has a liquid and provides the lower end, the above-mentioned end of granting down of above-mentioned tube is placed in the above-mentioned plastic film tube and is the top that the compartment of terrain is positioned at the aforesaid liquid granting lower end of above-mentioned topping up jet pipe, thereby when liquid charges into above-mentioned plastic film tube a suction pipe is discharged in the above-mentioned plastic film tube.

15. according to the equipment of claim 13, wherein, the suction pipe that also comprises a suction pipe that is holding a plurality of arrangement in parallels is provided hopper, above-mentioned hopper has one and provides throat, each suction pipe arranged parallel stem for stem in above-mentioned granting throat; Also comprise transmitting device, move to the above-mentioned suction pipe receiving end of going up of above-mentioned transmission tube, above-mentioned conveyer and above-mentioned bag of building mortion run-in synchronism in order to a discharge end from above-mentioned granting throat of the above-mentioned suction pipe that will be arranged in the outer end.

16. equipment according to claim 15, wherein, the push rod that comprises a plunger actuation in the above-mentioned transmitting device, the arrangement of above-mentioned push rod makes it can promote to touch an end of an above-mentioned suction pipe that is positioned at the outer end, above-mentioned suction pipe is injected in the above-mentioned suction pipe directional guide tunnel of going up suction pipe receiving end top that is placed in above-mentioned transmission tube.

17. equipment according to claim 16, wherein, the push rod of above-mentioned plunger actuation is an elongate rod, it ejects in the stroke at a suction pipe and stretches the above-mentioned discharge end that passes above-mentioned granting throat, move to the above-mentioned discharge end of above-mentioned granting throat with the next above-mentioned suction pipe that prevents to be adjacent to the outer end, eject the stroke withdrawal from its suction pipe fully until above-mentioned push rod.

18. equipment according to claim 16, wherein, the following guiding wall that comprises a bending in the above-mentioned suction pipe directional guide tunnel, above-mentioned suction pipe is leaning a crooked end wall and is being launched in the above-mentioned tunnel, thereby above-mentioned suction pipe is being guided from a level attitude by above-mentioned tunnel redirect to a vertical position, and entering the above-mentioned suction pipe receiving end of going up of above-mentioned transmission tube, suction pipe falls under the effect at gravity in above-mentioned transmission tube.

19. according to the equipment of claim 15, wherein, above-mentioned suction pipe is provided in the hopper oscillating plate also is housed, so that above-mentioned suction pipe remains in the above-mentioned hopper and be adjacent to above-mentioned granting throat with the orientation of almost parallel.

20. according to the equipment of claim 15, wherein, above-mentioned granting throat has the above-mentioned suction pipe that pair of parallel is separated by and provides the hopper side wall extension, has a suction pipe near the hole at least one above-mentioned sidewall extension that is separated by.

21. according to the equipment of claim 14, wherein, comprise a plastic film tube forming head in the above-mentioned bag building mortion, it is used for a folding thin-film sheet and the opposed side edge portions of above-mentioned thin-film sheet is overlapped each other; A vertical sealer, it is used for the above-mentioned side edge portions that is overlapping is sealed, to form above-mentioned plastic film tube; A tube interlock driver train, it is used for order and moves above-mentioned tube; A transverse sealing mechanism, its be used to be shaped a bottom and a top seal across above-mentioned tube; And tube expanding unit, it is used for above-mentioned tube is remained on the horizontal spreading state, so that the plastic barrel of topping up that is used to form above-mentioned sealing topping up bag partly obtains a continual top seal, and make one just partly being obtained a bottom sealing by the plastic barrel of topping up.

22. equipment according to claim 21, wherein, comprise a pair of outside biasing push rod in the above-mentioned tube expanding unit, they are fixed on the opposite side of above-mentioned topping up jet pipe and the opposed medial extremity of the above-mentioned plastic film tube of wipe contact, launch and tensioning in the aforesaid liquid of above-mentioned topping up jet pipe is provided region, lower end and above-mentioned transverse sealing mechanism region to keep above-mentioned tube.

23., wherein, include a pair of jaw in the above-mentioned transverse sealing mechanism according to the equipment of claim 22, have a sealing head on one of them above-mentioned jaw, another above-mentioned jaw is a pressing plate; And fixing device, they link to each other with above-mentioned a pair of jaw, thus with the leak free mode promptly one upper end of topping up bag and one just a topping up in the cycle by a lower end of the bag of topping up.

24. according to the equipment of claim 21, wherein, the opposed lateral margin that above-mentioned bottom sealing that is shaped across above-mentioned tube and top seal constitute above-mentioned bag.

25. according to the equipment of claim 23, wherein, also have exhaust gear on the above-mentioned a pair of jaw, in order to when above-mentioned jaw is closed, before above-mentioned seal molding, air is just discharged by the top of topping up bag from above-mentioned.

26. equipment according to claim 25, wherein, above-mentioned exhaust gear is made of above-mentioned fixing device, above-mentioned fixing device is configured as the big elongated flanges of stretching out from the mating surfaces of an above-mentioned jaw and is positioned at the cavity that is used to receive above-mentioned flange on another above-mentioned jaw, and the distance that above-mentioned lower flange is stretched out from above-mentioned mating surfaces is greater than above-mentioned upper flange.

27. equipment according to claim 22, wherein, above-mentioned a pair of outside biasing push rod is their arm, thereby its opposed side walls is less at interval upon deployment to make above-mentioned plastic film tube, so that be positioned at liquid top and be positioned at the volume of air of an apical margin sealing below of above-mentioned bag less, above-mentioned expanding unit constitutes a pair of exhaust gear.

28. equipment according to claim 21, wherein, above-mentioned tube interlock driver train is a static bogie, it is equipped with double-type opposed film interlock drive wheel, the every pair of drive wheel respectively between them interlock live in to state a lateral border part in the opposed lateral border part of film cylinder, above-mentioned two pairs of wheels can draw next preset distance with above-mentioned film cylinder after the startup in one moves downward, above-mentioned topping up jet pipe is one and is stretched in above-mentioned film cylinder in-to-in elongated tubular between above-mentioned two pairs of drive wheels.

29. equipment according to claim 23, wherein, above-mentioned topping up jet pipe is a continuous liquid discharge nozzle, after above-mentioned a pair of jaw closure, above-mentioned suction pipe can be discharged in the above-mentioned bag immediately, after above-mentioned jaw opens, above-mentioned tube interlock driver train can transmit above-mentioned plastic film tube downwards at a topping up in the cycle, drop-down along with above-mentioned plastic film tube, in the process that liquid is transmitted, above-mentioned suction pipe will transmit the above-mentioned granting end discharge of tube from above-mentioned suction pipe, above-mentioned suction pipe freely tilts towards above-mentioned topping up jet pipe, and the mode that immerses with the part is spaced a distance downwards with an above-mentioned top end part that is formed bag, and below above-mentioned jaw is positioned at above-mentioned jaw once more before the closure.

30. a method, it is used for making sealing topping up bag, has the suction pipe of a free-floating in the liquid in the above-mentioned topping up bag, and said method comprises following each step:

I) fold and seal a plastic sheeting sheet material, to form a band open top

Film cylinder,

Ii) liquid is charged in the above-mentioned film cylinder,

Iii) simultaneously, a suction pipe being transmitted tube by a suction pipe just enters and moulds above-mentioned

In the liquid that rises in the material film cylinder,

Iv) move down above-mentioned plastic film tube,

V) open top of topping up film cylinder sealing that is shaped, with

Form above-mentioned sealing topping up bag, and just be shaped on the tube at topping up at another

A root edge sealing.

31. according to the method for claim 30, wherein, above-mentioned steps comprises following each step in (iii):

A) suction pipe is transferred to a loading position from a suction pipe reservoir vessel,

And

B) with above-mentioned suction pipe in above-mentioned loading position orientation, so that above-mentioned suction pipe enters

Go up the suction pipe receiving end for one that states the transmission tube, above-mentioned suction pipe is at above-mentioned transmission tube

In under the effect of gravity, fall.

32., wherein, also comprise such step: make above-mentioned plastic film tube remain on deployed condition continuously by expanding unit according to the method for claim 31.

33. according to the method for claim 30, wherein, above-mentioned steps comprises following each step in (iv):

A) two opposed lateral borders with above-mentioned plastic film tube are engaged in respectively accordingly

Between the pair of driving wheels, and

B) in above-mentioned sealing step (v), in a predetermined period of time, starting

State drive wheel.

34. according to the method for claim 30, wherein, above-mentioned steps (comprise following each step v):

A) with a pair of jaw closure being engaged on the above-mentioned plastic film tube,

B) simultaneously, by the fixing device in the above-mentioned plate with one of leak free mode interlock

Topping up plastic film tube section upper end and one are just at the plastics of topping up

A lower end of film cylinder section, and

C) simultaneously, the above-mentioned sealing that is shaped.

35. according to the method for claim 34, wherein, above-mentioned fixing device can also be implemented such step: before above-mentioned seal molding some air are discharged from the above-mentioned plastic film tube of topping up.

36., wherein, comprise following each step in the above-mentioned steps (i) according to the method for claim 30:

A) a plastic sheeting sheet material is provided jet pipe and above-mentioned suction around a liquid

Pipe transmits the tube pulling and covers on the forming head,

B) folding above-mentioned thin-film sheet and with the opposed side edge portions of above-mentioned thin-film sheet that

This overlap joint, and

C) (v) the above-mentioned side edge portions that is overlapping is sealed in above-mentioned steps.

37. a method, it is used for making sealing topping up bag, in the above-mentioned topping up bag a kind of liquid and suction pipe is housed, and said method comprises following each step:

I) move a film band that has opposed side walls to a topping up and sealing station,

Ii) shaping one or more edges sealing in above-mentioned topping up and sealing station is with shape

Become a film cylinder that has open top and determine an inner chamber,

Iii) insert above-mentioned by above-mentioned open top a suction pipe with predetermined stiffness

In the inner chamber,

The liquid that iv) will have predetermined injects above-mentioned inner chamber by above-mentioned open top

In, occupying about 60% to about 90% volume of above-mentioned inner chamber,

And above liquid, form a un-occupied space,

V) on the part of above-mentioned un-occupied space place, above-mentioned opposed side walls is flattened one

Rise, so that air is discharged from above-mentioned open top,

Vi) the apical margin that is adjacent to above-mentioned open top on the above-mentioned opposed side walls is sealed in

Together, thereby form a bag, in the above-mentioned bag liquid and a freedom are housed

Swim in the suction pipe in the liquid, and have the air of sufficient quantity to be discharged from, from

And the opposed side walls of above-mentioned bag by toward each other during flattening, aforesaid liquid

Can in above-mentioned bag, move, thereby can catch above-mentioned in the aforesaid liquid

Suction pipe, and above-mentioned suction pipe can be penetrated above-mentioned plastic film bag, so that on

A part of stating suction pipe reaches the outside of above-mentioned bag to draw from above-mentioned bag

Liquid.

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