CN85104211A - The method and relevant system that prepare flat-bottom thermoplastic sack - Google Patents
The method and relevant system that prepare flat-bottom thermoplastic sack Download PDFInfo
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- CN85104211A CN85104211A CN 85104211 CN85104211A CN85104211A CN 85104211 A CN85104211 A CN 85104211A CN 85104211 CN85104211 CN 85104211 CN 85104211 A CN85104211 A CN 85104211A CN 85104211 A CN85104211 A CN 85104211A
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Abstract
The method and system of preparation flat-bottom thermoplastic sack comprises: make the thermoplastic film pipe; Flatten this pipe and make two relative parallel rivels; Opening simultaneously the rivel folding of tube edge one by one stretches to putting down fully; In four rivel foldings, form a pair of diagonal angle sealing line simultaneously or one by one, make contiguous rivel folding sealing line end, can be near each other and at an angle of 90; Rivel is set back, and each is overlapping to the diagonal angle sealing line; Along crossing pipe and comprising the diagonal medial extremity, make the across seal line, and make pre-reduction transverse cut at contiguous this line; The diagonal angle sealing line, four bilayer film triangles that x wire and pipe side surround cut.
Description
The present invention relates to the preparation method system of thermoplastic bag, particularly preparation has a kind of bag method and system at the bottom of the flat rectangular at least basically.
Bag wall and rear bag wall before this bag constructions comprises, they link to each other with the rivel sidewall is arranged.One opening is arranged at the bag top, it is characterized in that the opposite end of bottom has handle, and each is made up of described handle two films, is the result of the part that stretches of whole front and back walls and rivel sidewall.But the secondary exhibition in the diapire plane of bag forming a rectangle, at the outside film that does not almost remove fully of the overall volume of the bottom section of described bag more.Change the bottom that a method is described this bag, we can say that promptly the bottom is to be formed by the whole part that stretches of antetheca, rear wall and sidewall, the part of its closure is the heat sealing lines of 4 film rivels to the wall bilayer film when the bottom is square shape, and when the bottom is rectangular shape, be 4 rivels heat sealing line and antetheca rear wall bilayer film heat sealing lines to the wall bilayer film, the present invention considers to make the similar bag that does not have handle simultaneously.
The present invention relates to handle, smooth at least basically rectangular base, the preparation method of thermoplastic film bag and system comprise:
A) make the thermoplastic film pipe;
B) flatten this pipe and make two relative parallel rivels simultaneously;
C) the folding of the rivel on each limit of described flattening pipe, simultaneously or one by one open to flat fully degree;
D) simultaneously or one by one in four rivel foldings, corresponding to rivel on the partial width of pipe, diagonal along the direction of pipe range is made the diagonal angle sealing line, make the end of the sealing line in the folding of adjoining rivel, can be very approaching or contact with each other, forming between the two approximately is 90 ° angle;
E) folding with rivel sets back, and makes its sealing line to overlapping;
F) press inclined to one side pipe comprising the described diagonal angle right medial extremity of sealing line to make a sealing line and line of cut along crossing.
G) a plurality of structures of making are gathered into one and stack.
H) make the triangle film that structure cuts four bilayers between diagonal angle sealing line and across seal line and line of cut from each, just promptly can be made into the bottom of polybag; With
I) on another position, opposite end, the bottom of bag, make a pair of handle and sack; For wrapping up one group of such bag, make one group of tag in the integral body of the sack part that stretches, the zone of a pre-reduction is arranged above the sheet, for example stamp perforated lines, all tags can tightly be bound together, make it to tear tag off individually and take out polybag.
The present invention also relates to prepare no handle, the method and system of the thermoplastic film bag of smooth rectangular base at least basically, comprising:
A) make the thermoplastic film pipe;
B) flatten this pipe and make two relative parallel rivels simultaneously;
C) the folding of the rivel on each limit of flattening pipe, simultaneously or open to flat fully degree of stretching one by one;
D) side by side or one by one in the folding of four rivels, corresponding to rivel on the partial width of pipe, make the diagonal angle sealing line along the diagonal of the direction of pipe range, make the end of the sealing line of adjoining rivel folding, can be very approaching or contact with each other, form about 90 ° angle between the two;
E) folding of rivel is set back, and make its sealing line overlapping.
F) along crossing the line that this pipe is comprising the medial extremity of a pair of diagonal angle sealing line, make a horizontal weldering across seal line, simultaneously near and be parallel to this across seal line place, make the transverse cut of a pre-reduction.
G) four bilayer film deltas that the side of diagonal angle sealing line, across seal line and line of cut and pipe is surrounded cut; With
H) structure of making that will still be interconnected with one another under the situation at pre-reduction transverse cut place collects.
Other method of the present invention is made no handle continuously, and the thermoplastic film bag of smooth at least basically rectangular base comprises:
A) make hot north film tube;
B) flatten this pipe, make two relative parallel rivels simultaneously.
C) the rivel folding on each limit of flattening pipe, simultaneously or one by one open to flat fully degree of stretching;
D) simultaneously or one by one making the diagonal angle sealing line along the diagonal of the direction of pipe range on corresponding to the partial width of rivel in four rivel foldings at pipe, make the end of the sealing line of adjoining rivel folding, can be very approaching or contact with each other, form about 90 ° angle between the two;
E) rivel is set back, and make its sealing line overlapping;
F) along crossing the line that described pipe is comprising the medial extremity of a pair of diagonal slit sealing line, make an across seal line, cut this pipe along the line that is parallel to this across seal line simultaneously.
G) described diagonal angle sealing line, four bilayer film deltas that the side of across seal line and pipe surrounds cut.
Fig. 1 is with the plane of a kind of form of schematic view illustrating system of the present invention and process procedures.
Fig. 2 illustrates the plane of the another kind of form of system of the present invention and process.
Shown in Figure 1, be that explanation manufacturing has handle, rivel, the system of flat thermoplastic bag and process procedures 50.Thermoplastic film open tubular column or socket 12 are passed device 14 backs that a combination makes rivel and pleating pleat folding and be crushed.This device can be any structure form, it can make plastic tube flatten and be converted into rivel two relative edges of pipe, and the folding of rivel can farthest open to the position that keeps flat fully, usually be to open with the rivel folding of folding up near 0 ° of acute angle in other words, the folding of rivel is shakeout near 180 ° angle with the method for reflexed or upset folding.According to the size of rivel, this step can be finished simultaneously.If two rivels are all very little, they can be opened fully side by side and shakeout; The degree of depth as tuck increases, and then can only open a rivel folding at every turn.Reach as shown in Figure 1 owing to rivel has been formed rivel at 16, two rivels of middle broken line and open fully with the device 14 of opening folding.Too big as rivel, and cause and can not open side by side, they can one by one be opened.In other words, plastic tube at first can be opened a rivel folding by equipment 14 o'clock, then in back process, gets back to when first rivel folding and to close after the position goes up, and the rivel folding meeting on opposite is opened to the position of shakeouing by identical device.As mentioned above, device 14 can be the sheet metal device, and when it had an inlet face to pass through to accept resilient cylinder film tube, sheet metal made pipe form invaginate or forms rivel.The size of outlet can be dwindled gradually, thus form flatten fully the rivel pipe arranged.This device comprises rotatable lamella or reel, makes that top folding is opened gradually behind the formation rivel, until forming 180 ° of complete mean places in angle.
The rivel folding is opened, make in four rivel foldings, can extrude a diagonal angle sealing line, shown among Fig. 1 20.This operation leans on a heat sealing device 18 to finish, and this device comprises that the resistive conductor by the coating polytetrafluoroethylene (PTFE) constitutes, and is heated to the temperature that goes up two plastic layer hot melt involutions that can make four rivel foldings with it.The diagonal angle sealing line is extended to corresponding to rivel on the partial width of pipe, on the diagonal of the length direction of pipe.A pair of sealing line at each rivel that keeps flat the position forms about 90 ° of angles each other.Afterwards, a rivel driving fit device 22 turns down the rivel folding that this opens again, and it is folded go back to closed position, makes angle between them once more near 0 °.In this position, the sealing line 20 of each rivel all is just in time overlapping and aligned with each other.
Marquis when flattening pipe and its weld bond 20 by this system and then also makes bottom seal line 24, and it can cut off the bottom of rivel structure in involution, and this operation is finished from device 26 by bottom involution and otch.Sealing line 24 is an across seal line and lines of cut, and it flattens pipe along crossing and pass this, is comprising the line of the inside end 28 of each diagonal angle sealing line.The device 26 of finishing the across seal line and cutting off line can be anyly can and cut off the appropriate device of flattening pipe along described setting-out line involution.Involution with cut off action and can make pipe flattening and that rivel is arranged separate output base 30; Bag base 30 has the sealing line 32 at the top of crossing it, and those four delta-shaped regions 34 are the side area surrounded by sealing line 20,24 and tool rivel structural tube.
Bag blank structure 30 can be individually or change system into the structure of bag in batches, and method is to cut delta-shaped region 34 and make sack 36, also makes handle 38 simultaneously, and each handle ring all is that the double-layer films of rivel structure constitutes.So just finished the preparation that has handle to mould the beech bag; The end of each bag can both planar extension form one flat.So-called " planar extension " is meant when opening rivel fully, and the internal capacity of bag can expand into maximum degree, forms the smooth bottom of a length greater than the rectangle of width.
Process and system in the most desirable specific embodiments as shown in drawings, be linear low density polyethylene (LLDPE) tubular film 12 flattenings with about 1 mil thick, laterally invagination forms rivel simultaneously, and rivel can be opened fully to about 180 ° when pipe passes formation rivel and shedding motion 14.When the pipe of rivel passes through this system forward, form sealing line 20 and 24 simultaneously.This action can produce bottom seal line 24 and top sealing line 32 simultaneously, also cutting bag base 30.Thus, bag base 30 can be transferred to another workshop section, can be individually or cut gable 34 simultaneously at this, form sack 36 and handle 38.This operation can be finished on the bag base individually.Another way is that bag base 30 is built up a pile of alignment in vertical direction, and uses suitable cutting die mechanism, and triangle is partly cut and make handle and sack.
Make the bag that does not have handle, can use process shown in Figure 2 and system.This process and the 50a of system and difference shown in Figure 1 are begun by the bottom involution with bag.Therefore, represent bottom seal line and punching mechanical device 40 here, having on the rivel pipe of flattening, sealing line 42 impression on, simultaneously, very approaching be parallel to sealing line 42 places, make perforation line 44.Sealing line 42 can not cut off pipe, and only its involution.Be stamped in rivel pipe place in sealing line 42 and perforation 44, sealing line 20 also is stamped in the folding of following below of having opened rivel hinge structure pipe simultaneously.Afterwards, available any suitable cutting die device, 4 deltas 46 cut on the bar structure.So just make perforation line 44 and connected similar structures polybag 48.Afterwards these polybags are wound up, be packaged into cylindrical shape, or be gathered into reciprocal folded stacking.Any packaging structure all can tear off described bag and forms one and open open-bag along perforated lines in above-mentioned, when polybag rivel full extension is opened, just can obtain a flat bottom bags.This structure coiling or to beyond folded, can also automatically tear off each bag along perforated lines, then they are folded or stack.Using the resulting bag of process and system of Fig. 2, will be the rectangle bottom of a length greater than width.
In the modified form of process shown in Figure 2 and system, in involution bottom seal line 42, make and cross the bag constructions that the plastic tube line of cut promptly can be made into the no handle of opening.Afterwards, corresponding to the zone 46 the bag base the angle cut away, promptly can be made into bag constructions.
As mentioned above, the bag constructions of being made by Fig. 1 system shown in Figure 2 and process has the rectangle bottom of a length greater than width when planar extension, and in other words, the bottom of bag will can not be a square.If obtain a bag that has or not the square bottom of handle, only need to make rivel maximum process and method improvement once to reaching of invagination degree.In other words, flatten pipe and will on the longitudinal midline of pipe, be converted into rivel.In this case, the central pleat line of rivel can be collided with the central pleat line of another rivel, and the angle between formed diagonal angle sealing line, minimum approximately slightly 90 °.The polybag that obtains like this when planar extension is opened, has a roughly foursquare bottom.
The bag that said structure is arranged can be made useful a pair of aligning tag shown among Fig. 1 39, and this tag is the whole extension of sack, these sacks can stack into 15 with aiming at, 100,150 bags one stack, and the method that sack and tag 39 can be fit to binds together.For example, these tags can weld together by a perforation line that crosses tag and can separate each bag from the bag heap easily with ultrasonic method.
Any suitable thermoplastic material all can be used to make above-mentioned bag constructions.As polyolefin etc." polyolefin " used herein speech, be meant and from kind, comprise various polymer kinds, comprise linear low density copolymer, high density polyethylene (HDPE), above-mentioned mixture of polymers and the blend of low density polyethylene (LDPE), ethene and another kind of alkene and other monomer counter pair etc.Also can consider to comprise the paper of topped thermoplastic.The film of bag can have any thickness, as the thickness of about 0.3 Mill to about 5 Mills.
When making flat bottom bags, bag is the angle between its diagonal angle sealing line and its bottom seal line when flat condition, preferably about slightly 135 °.In the opening part that the bag of handle is arranged of the present invention, the curve or the camber line of minimizing stress arranged preferably to the bump of sack from the bottom of handle.When the elongation of the handle of bag or when carrying full heavy object, just can alleviate at sack and tear and the possibility of quilt breakage.Sack and handle can have any configuration.
When making bag constructions, it is too accurate that each relevant angle does not need, and for example, they do not need just in time is 90 °, 45 ° or 135 °.Reasonably the range of work should allow and code requirement between to a certain degree deviation is arranged.Equally, when forming sealing line, end can be crooked or certain angle is arranged, to cooperate and to guarantee that each film interface and interface point all have good sealing line; Also can use dual or multiple sealing line.
Claims (30)
1, the method for preparing the flat hot bag film of rectangle continuously is characterized in that described method comprises:
A) make thermoplastic tube;
B) flatten the rivel that described film tube is made two opposing parallel simultaneously;
C) open the folding of a rivel on each limit of pipe of flattening respectively or one by one to flat fully degree of stretching;
D) simultaneously or one by one in the folding of four rivels, make the diagonal angle sealing line corresponding to rivel diagonal along the length direction of pipe on the partial width of pipe, the end of the envelope envelope line in the folding of adjoining rivel, can be near each other or contact with each other, form approximately slightly 90 ° angle between the two;
E) described rivel folding is set back, make a pair of sealing line overlapping;
F) along crossing the line that described pipe is comprising the inside end of a pair of diagonal angle sealing line, make an across seal line, simultaneously extremely near and be parallel to across seal line place, make the x wire of pre-reduction;
G) remove described four bilayer film deltas that side surrounded by diagonal angle sealing line, across seal line and pipe;
H) will be still connected to one anotherly obtain a plurality of structures of making and collect at pre-reduction x wire place.
2, by the described method of claim 1, wherein said pre-line of weakness is a perforation line.
3, by the described method of claim 1, wherein said pre-line of weakness is the line that the thickness of thermoplastic material on this line direction has reduced.
4, by the described method of claim 1, the wherein said structure of making is to be gathered into a reel.
5, by the described method of claim 1, the wherein said structure of making is to be gathered into back and forth to folded stacking.
6, by the described method of claim 1, wherein saidly make interconnected structure and can cut apart separately, can fold or stack.
7, by the described method of claim 1, wherein said thermoplastic film material is a kind of polyolefin.
8, by the described method of claim 1, wherein each rivel is identical, and the central pleat line between each rivel contacts with each other, and the angle between the every pair of described envelope envelope line is 90 °, and the bag of making is a foursquare bottom when stretching out on the plane.
9, by the described method of claim 1, wherein each described rivel is identical, and the central pleat line of described rivel is all disconnected from each other, and the angle between the extended line of diagonal angle sealing line is 90 °, makes the bag of making that the smooth bottom of different length and width be arranged when planar extension.
10, prepare the method for rectangle flat-bottom thermoplastic bag film, it is characterized in that, described method comprises:
A) make the thermoplastic film pipe;
B) flatten described pipe and make two relative parallel rivels simultaneously;
C) simultaneously or the folding of rivel of opening each limit of flattening pipe one by one to the flat fully degree of stretching;
D) simultaneously or one by one in the folding of four rivels, with respect to rivel diagonal along the direction of pipe range on the partial width of pipe, make a diagonal angle sealing line, the end of the folding sealing line of adjacent rivel, can be near each other or contact with each other, form approximately slightly 90 ° angle between the two;
E) above-mentioned rivel folding is set back, make each overlapping sealing line;
F) flatten the line that pipe comprises the medial extremity of a pair of diagonal angle sealing line along crossing this, make horizontal sealing line and line of cut;
G) structure of making is gathered into stacks;
H) remove four bilayer film delta-shaped regions between described diagonal angle sealing line and across seal line and the line of cut, promptly can be made into polybag the bottom and
I) at the described bag other end at the end, make handle and sack.
11, by the described method of claim 10, wherein said two pairs of diagonal angle sealing lines are made simultaneously.
12, by the described method of claim 10, wherein said two pairs of diagonal angle sealing lines, little across seal line and cut-off rule are to make on adjacent bag constructions simultaneously.
13, by the described method of claim 10, wherein each described rivel is identical, and the central pleat line of each rivel contacts with each other, and each is to extremely approximately slightly 90 ° of the angles between the diagonal angle sealing line simultaneously, when making the bag planar extension of gained, a generally flat square bottom is arranged.
14, by the described method of claim 10, wherein each described tuck is identical, and the middle pleat line of each rivel is disconnected from each other, and the angle between the diagonal angle sealing line that has prolonged is 90 °, and making the bag of making be one when planar extension has the rectangle of different length and width flat.
15, the method for preparing the flat hot bag film of rectangle continuously is characterized in that described method comprises:
A) make the thermoplastic film pipe;
B) flatten described pipe, make two relative parallel rivels simultaneously;
C) simultaneously or the folding of one by one opening the tuck pleat on each limit of flattening pipe, to flat fully degree of stretching;
D) simultaneously or one by one in the folding of four rivels, on the partial width of pipe, make the diagonal angle sealing line with respect to rivel, make the end of adjoining rivel folding along the diagonal of pipe range direction, can be near each other or contact with each other, form 90 ° angle between the two;
E) the rivel folding is set back, make each overlapping the diagonal angle sealing line.
F) along crossing the line that described pipe is comprising the medial extremity of a pair of diagonal angle sealing line, make an across seal line simultaneously along one on the line of extremely contiguous described across seal line, cut off this and flatten pipe.
G) with described diagonal slit, cross four bilayer film deltas that seam and the side of pipe surround and cut.
16, by the described method of claim 15, wherein said involution and the structure of making that cuts off are gathered into and stack, simultaneously by cutting that four bilayer film delta-shaped regions in described the stacking.
17, by the described method of claim 16, wherein said rectangular base is a square.
18, by the described method of claim 16, wherein said rectangular base has the width and the length of different length.
19, the method for preparing rectangle flat-bottom thermoplastic film continuously is characterized in that described method comprises:
A) make the thermoplastic film pipe;
B) flatten described pipe and make two relative parallel rivels simultaneously;
C) simultaneously or the folding of one by one opening the rivel on each limit of flattening pipe, to flat fully degree of stretching.
D) simultaneously or one by one in the folding of four rivels, on the partial width of pipe, form the sealing line at diagonal angle with respect to rivel, make the end of the sealing line in the folding of adjoining rivel along the diagonal of pipe range direction, can be near each other or contact with each other, and form 90 ° angle degree;
E) the rivel folding is set back, make each overlapping the envelope sealing line;
F) along crossing the line that described pipe is comprising the medial extremity of a pair of diagonal angle sealing line, make an across seal line, extremely being close to and being parallel to described across seal line place, make the x wire of pre-reduction simultaneously;
G) collect the structure of making that is obtained and become one to fold, make all diagonal angle sealing lines all concentrate on an end of this heap; With
H) described side to sealing line, across seal line and pipe being surrounded four bilayer film delta-shaped regions cuts.
20, by the described method of claim 19, the wherein said structure of making is to be interconnected into to stack.
21, by the described method of claim 19, the wherein said structure of making was severed along described pre-line of weakness punishment before piling up.
22, the method for preparing rectangle flat-bottom thermoplastic bag film continuously is characterized in that described method comprises:
A) make the thermoplastic film pipe;
B) flatten described pipe, make two relative parallel rivels simultaneously;
C) simultaneously or the folding of one by one opening the rivel that flattens each limit of pipe, to flat fully degree of stretching;
D) simultaneously or one by one in the folding of four rivels, on the partial width of pipe, make a pair of diagonal angle sealing line with respect to rivel, make the end of sealing line of the folding of adjoining rivel along the diagonal of pipe range direction, can be near each other or contact with each other, and form 90 ° angle;
E) the rivel folding is set back, make a pair of diagonal angle sealing line overlapping;
F) along crossing the line that this pipe is comprising the medial extremity of a pair of diagonal angle sealing line, make the across seal line, simultaneously extremely contiguous and be parallel to described across seal line place, make on the x wire of pre-reduction, meanwhile, make the second across seal line that crosses described pipe in addition at x wire extremely contiguous and that be parallel to described pre-reduction;
G) institute is obtained to make structure and be gathered into one and stack, make all diagonal angle sealing lines all concentrate on an end of heap;
H) four bilayer film delta-shaped regions that the side of described diagonal angle sealing line, across seal line and pipe is surrounded cut; With
I) at the described bag other end at the end, make handle and sack.
23, the system for preparing rectangle flat-bottom thermoplastic film continuously is characterized in that described system comprises:
A) device of preparation thermoplastic film pipe;
B) flatten the device of this pipe, comprise the device that can be formed in the parallel rivel of two relative positions simultaneously;
C) can be simultaneously or one by one open in the rivel folding on each limit of described flattening pipe, and making sealing line at the diagonal of the length direction of the partial width upper edge of pipe pipe with respect to rivel, make the end of the described sealing line in the folding of adjoining rivel can be near each other or contact with each other, and and form the device of 90 ° angle;
E) folding of rivel can be set back, make the overlapping device of a pair of diagonal angle sealing line;
F) can be along crossing the line that this pipe is comprising the medial extremity of a pair of diagonal angle linear slit, an across seal line, and, form the device of the x wire of a pre-reduction simultaneously extremely contiguous and be parallel to described across seal line place;
G) can be four devices that the bilayer film delta-shaped region cuts that side surrounded of described diagonal angle sealing line, across seal line and pipe; With
H) can collect the device of making structure that these are still connecting at the x wire place of pre-reduction.
24, described by claim 23, comprise in the wherein said device of making the diagonal angle sealing line preventing the device that adheres to.
25, described by claim 23, the wherein said device of making the x wire of pre-reduction is a kind of perforating device.
26, described by claim 23, the wherein said device that can cut delta-shaped region is that a kind of otch cuts device.
27, described by claim 23, the device of the described structure that is being connected to each other of wherein said collection is a kind of these to be made the device that structure winds up.
28, by claim 23 described, wherein said gathering-device be a kind of can be making structure back and forth to building up the device that stacks.
29, the system for preparing flat rectangular base thermoplastic film continuously is characterized in that described system comprises:
A) device of preparation thermoplastic film pipe;
B) flatten the device of this pipe, comprise the device that to make two relative parallel rivels simultaneously;
C) simultaneously or the folding of one by one opening the rivel on each limit of flattening pipe, to the flat fully device of degree of stretching;
D) can be simultaneously or one by one in four rivel foldings, relatively for rivel on the partial width of pipe, diagonal along the length direction of pipe is made a pair of diagonal angle sealing line, make the end of the sealing line of adjoining rivel folding, can be near each other or contact with each other, and make the device that forms 90 ° angle between two sealing lines;
E) can set back the rivel folding, and make each device overlapping the diagonal angle sealing line;
F) can make an across seal line along crossing the line that described pipe is comprising the medial extremity of a pair of diagonal angle sealing line, and cut off the device of line;
G) collect and to make structure and become a device that stacks;
H) can cut four bilayer film triangles that remove between diagonal angle sealing line and across seal line and line of cut, with the device at the end of making polybag; With
I) can make the device of a pair of handle and sack at the described bag other end at the end.
30, by the described system of claim 29, it is characterized in that described system comprises the device that can make the tag that can cut off at the opposite side of sack, with and tag is bound together with the binder that forms a plurality of bags.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104211 CN85104211A (en) | 1985-05-31 | 1985-05-31 | The method and relevant system that prepare flat-bottom thermoplastic sack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85104211 CN85104211A (en) | 1985-05-31 | 1985-05-31 | The method and relevant system that prepare flat-bottom thermoplastic sack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85104211A true CN85104211A (en) | 1986-11-26 |
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ID=4793700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85104211 Pending CN85104211A (en) | 1985-05-31 | 1985-05-31 | The method and relevant system that prepare flat-bottom thermoplastic sack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85104211A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781616A (en) * | 2011-06-16 | 2014-05-07 | 帕克西斯全球（瑞士）有限公司 | Method for producing tubular bodies for packaging tubes, and a packaging tube with a tubular body |
| CN109229813A (en) * | 2018-08-07 | 2019-01-18 | 田帅 | A kind of anticorrosion PE square opening bag |
-
1985
- 1985-05-31 CN CN 85104211 patent/CN85104211A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103781616A (en) * | 2011-06-16 | 2014-05-07 | 帕克西斯全球（瑞士）有限公司 | Method for producing tubular bodies for packaging tubes, and a packaging tube with a tubular body |
| CN103781616B (en) * | 2011-06-16 | 2016-10-12 | 帕克西斯全球（瑞士）有限公司 | Manufacture the method for the body for packaging tube and there is the packaging tube of body |
| CN109229813A (en) * | 2018-08-07 | 2019-01-18 | 田帅 | A kind of anticorrosion PE square opening bag |
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