CN108973230B - Full-automatic flat-sheet plastic film bag making method - Google Patents
Full-automatic flat-sheet plastic film bag making method Download PDFInfo
- Publication number
- CN108973230B CN108973230B CN201810809513.5A CN201810809513A CN108973230B CN 108973230 B CN108973230 B CN 108973230B CN 201810809513 A CN201810809513 A CN 201810809513A CN 108973230 B CN108973230 B CN 108973230B
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- Prior art keywords
- plastic film
- notch
- single plastic
- cam
- pressing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/26—Folding sheets, blanks or webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
Abstract
The invention discloses a full-automatic flat plastic film bag making method, which comprises the steps of firstly, stacking a to-be-processed flat plastic film in a feeding box, pushing the single plastic film to an upper layer conveying belt along the horizontal direction by utilizing a notch at the bottom corner part of one side of the feeding box and a cam rotating below the notch, then, downwards pressing and folding the single plastic film by utilizing a folding mechanism, conveying the folded single plastic film to a lower layer conveying belt, and finally, forming a bag after hot-pressing sealing, cold-pressing adjustment and die cutting. The automatic bag-making packaging bag has the advantages of simple structural design, convenience in use, reliable pushing quality of single plastic films, sustainable, efficient and rapid pushing process, capability of meeting bag-making requirements of an automatic production line, good hand feeling, good affinity, softness, easiness in degradation and environmental friendliness, and is particularly suitable for packaging products such as facial masks, cosmetics and medicines.
Description
Technical Field
The invention relates to a bag making method, in particular to a full-automatic bag making method aiming at flat and single plastic films, and belongs to the packaging and printing industry.
Background
With the enhancement of the environmental protection consciousness of people, the environmental protection performance of products is more and more appreciated and favored by people, wherein, plastic bags are used as the most main packaging products and are widely used in all the links of work and life, but the environmental protection performance is questioned by people all the time.
The plastic bags mainly comprise food bags, packaging bags, shopping bags, hand bags, sealing bags, various waterproof packaging bags and the like according to functions, the plastic bags with various types and purposes are made of roll-shaped plastic films with different thicknesses, the plastic bags have good waterproof, moistureproof and isolation functions, the plastic bags are various in forms, simple to store and convenient to use and process, but the roll-shaped plastic films can only be rapidly printed by a gravure press in the printing process, the gravure press has more color sets, poor environmental protection and low color reduction degree, although simple patterns can be printed, the pattern effect is poor and the grade is low, particularly when the plastic bags are singly used as outer packages of products, the aesthetic property of the product packages is greatly influenced by the post-processing limitation of the plastic films, the use requirements of the product packages as independent product packages cannot be met, and meanwhile, the degradation speed of the packaging bags after being abandoned by the material, the performance and the thickness of the roll-shaped, the pollution is serious and is one of the main white pollution sources in the modern society.
The offset press has high printing speed, good color and mature technology, and is the main printing mode in the current society. The rolled plastic film can not be directly printed on a machine due to the rolled state, but a single plastic film can smoothly complete the printing process on an offset press, and the inventor applies for an invention patent of a corresponding single plastic film printing method, and the method can be used for printing the effects of color, saturation and the like which are the same as those of paper packages.
The single plastic film has the advantages of thin thickness, easy degradation and soft hand feeling, and how to process the printed single plastic film into the novel, environment-friendly and high-affinity independent packaging bag to meet the packaging requirements of special products such as facial masks, medicines, cosmetics and the like becomes the problem to be solved by the invention.
Disclosure of Invention
In view of the above-mentioned existing circumstances, the present invention aims to provide a full-automatic flat plastic film bag-making method using a single plastic film as an object and an automatic bag-making process as a means, so as to realize an effective bag-making process of the single plastic film, and combine a single plastic film printing mode to form a brand new packaging product with rich patterns, bright colors, thin size, softness, good affinity, easy degradation and no pollution.
The invention is realized by the following technical scheme:
the full-automatic flat-sheet plastic film bag-making method includes the following steps:
step one, stacking the to-be-processed flat plastic film in a feeding box, wherein a longitudinally-through notch is arranged at the bottom corner of one side of the feeding box and used for feeding the flat plastic film out along the horizontal direction, the height of the notch is larger than the thickness of a single plastic film, and the width of the notch is more than 2 cm.
And secondly, blowing static plasma-removing wind in the horizontal direction of the flat plastic film outside the notch in the opposite direction.
And step three, horizontally pushing out the single plastic film stacked at the bottommost layer in the feeding box from the notch through a cam rotating below the notch, and enabling the single plastic film to enter an upper layer conveyor belt on the outer side.
And step four, pressing and folding the single plastic film downwards by using a folding mechanism and pressing and conveying the single plastic film to a lower layer conveyor belt.
And step five, positioning and conveying a single plastic film on a lower layer conveying belt after folding, carrying out hot-pressing sealing, cold-pressing leveling, and finally carrying out die cutting to form bags, thereby completing the bag making process of the flat plastic film.
In the third step, the circumferential surface of the cam is also provided with uniform air suction openings, and the cam controls the quick suction and release of the air suction openings through an external negative pressure mechanism to complete the suction and the push of a single plastic film from the feeding box and the quick release of the single plastic film onto the upper-layer conveying belt.
And the circumferential surface of the cam, which is contacted with the single plastic film, is covered with a rubber layer.
The common stroke of the plastic film and the cam is one third to three quarters of the length of the circumferential surface of the cam.
The thickness of the plastic film is PE, PVC or POP film between 0.6 silk and 30 silk.
The full-automatic flat-sheet plastic film bag making method has the beneficial effects that:
1. the feeding box with the notch at the bottom corner is used for feeding materials and is matched with the cam, so that reliable feeding of a single plastic film in the horizontal direction is completed, and the feeding box is simple in structure, convenient to use and low in cost;
2. the static electricity removing treatment is carried out on the plastic film to be conveyed by using the plasma wind, so that the reliability of pushing a single plastic film by the cam is effectively improved, the pushing quality is improved, and the continuous, effective and high-speed pushing process is ensured;
3. the upper layer conveyor belt and the lower layer conveyor belt are structurally arranged, so that the problem that a thin plastic film cannot or is not easy to turn over when being folded is solved, the plastic film is folded in a pressing mode, and the plastic film is transferred to the lower layer conveyor belt in the pressing process, and the folding conveyor belt is novel in design, simple in folding and convenient to operate;
4. the negative pressure mechanism is utilized to carry out negative pressure control on the air suction opening on the cam, so that the adsorption reliability and the pushing stability of the cam and a single plastic film can be obviously improved, and the pushing efficiency and the pushing quality are ensured;
5. the bag making process of the thin plastic film after printing is realized, and the made packaging bag has good hand feeling, good affinity, softness, easy degradation and environmental protection, and is particularly suitable for packaging products such as facial masks, cosmetics, medicines and the like.
Detailed Description
The fully automatic flat plastic film bag making method of the present invention is further described in detail below by taking a rectangular facial mask packaging bag made of 20-filament plastic film as an example:
the invention relates to a full-automatic flat-sheet plastic film bag making method, which comprises the following specific steps:
step one, stacking the to-be-processed flat plastic film in a feeding box, wherein a longitudinally-through notch is formed in the bottom corner of one side of the feeding box and used for sending out the flat plastic film in the horizontal direction, the height of the notch is larger than the thickness of each single plastic film, and the width of the notch is more than 2 cm.
The thickness of the plastic film is PE, PVC or POP film between 0.6 silk and 30 silk. In this example, the plastic film is a rectangular PVC film of 20 filaments, and the length and width of the rectangular PVC film are based on the packaging bag to be processed. The opening is located the horizontal direction of sending out of plastic film, and the bottom corner that whole feed case was vertically link up to the opening, and its height is used for sending out the sola plastic film, and its width is used for the friction propelling movement of later stage feed case below cam. The gravity generated by the plastic films in the stacked state and the friction force of the cam are utilized to form effective horizontal pushing force, so that the flat plastic films form reliable single-sheet feeding. Certainly, the wide band of the notch is limited by the shape of the cam by taking the plastic film as a standard that the plastic film can form good frictional contact with the cam, and the wide band of the notch is more than 2 cm.
And secondly, blowing static plasma-removing wind in the horizontal direction of the flat plastic film outside the notch in the opposite direction.
The plasma wind can effectively remove static electricity distributed among the plastic films, prevents multiple plastic films from being attached to each other, and facilitates single-piece friction conveying of the cam at the later stage.
And step three, horizontally pushing out the single plastic film stacked at the bottommost layer in the feeding box from the notch through a cam rotating below the notch, wherein the common stroke of the plastic film and the cam is one third to three quarters of the length of the circumferential surface of the cam, and feeding the single plastic film into an upper layer conveyor belt on the outer side.
The device is limited by the processes of folding, positioning and conveying in the later period and hot pressing, in the embodiment, the conveying belts are divided into an upper conveying belt and a lower conveying belt, the upper conveying belt is connected with the feeding box and is used for folding a single plastic film, and the folded plastic film is directly pressed downwards to be conveyed to the lower conveying belt. The cam is located below the opening of the feeding box, the width of the opening is in contact with a single plastic film on the bottom layer, the common stroke of the rotary pushing process of the cam and the plastic film is one third to three quarters of the circumference of the cam, so that the cam can be in full contact with the plastic film, the single plastic film can be pushed in the horizontal direction reliably and effectively for a long time, and automatic feeding of the single plastic film to the upper-layer conveying belt is completed.
Certainly, in order to improve the pushing reliability of the cam in the horizontal direction, uniform air suction openings can be further formed in the circumferential surface of the cam, and an external negative pressure mechanism is used for performing quick suction and release control on the air suction openings, so that when the cam is in contact with a single plastic film, the plastic film is adsorbed and pushed by using instant negative pressure, and when the cam is pushed onto an upper layer conveyor belt, the negative pressure is immediately removed, so that the single plastic film is quickly released onto the upper layer conveyor belt, the quick and automatic feeding process is completed, and the feeding reliability is improved. Certainly, the circumferential surface of the cam, which is in contact with the plastic film, can be covered with a rubber layer, so that the friction coefficient of the cam surface is increased, and the pushing stability is improved.
And step four, pressing and folding the single plastic film downwards by using a folding mechanism and pressing the single plastic film downwards onto a lower-layer conveyor belt.
The folding mechanism carries out downward pressing type folding on the single plastic film on the upper layer conveying belt and directly presses the single plastic film to the lower layer conveying belt in the downward pressing and folding process, so that the folding problem caused by the fact that the thin plastic film cannot or is not easy to turn is avoided.
And step five, positioning and conveying a single plastic film on a lower layer conveying belt after folding, carrying out hot-pressing sealing, cold-pressing leveling, and finally carrying out die cutting to form bags, thereby completing the bag making process of the flat plastic film.
And (3) the folded plastic film which is pressed and conveyed to the lower layer conveying belt is firstly positioned, and hot pressing, cold pressing and die cutting are completed in the positioning and conveying process, so that the required rectangular facial mask packaging bag is finally formed, and the whole manufacturing process is completed.
Claims (4)
1. The full-automatic flat-sheet plastic film bag making method is characterized by comprising the following specific steps:
step one, stacking a to-be-processed flat plastic film in a feeding box, wherein a bottom corner part on one side of the feeding box is provided with a longitudinally-through notch, the notch is used for feeding the flat plastic film in the horizontal direction, the height of the notch is larger than the thickness of a single plastic film, and the width of the notch is more than 2 cm;
secondly, blowing static plasma air in the horizontal direction sent out by the flat plastic film outside the notch in the reverse direction;
horizontally pushing out the single plastic film stacked at the bottommost layer in the feeding box from the notch through a cam rotating below the notch, and enabling the single plastic film to enter an upper layer conveyor belt on the outer side; the periphery of the cam is distributed with uniform air suction ports, and the cam controls the quick suction and release of the air suction ports through an external negative pressure mechanism to complete the suction and the push of a single plastic film from the feeding box and the quick release of the single plastic film onto the upper-layer conveying belt;
step four, pressing and folding the single plastic film by using a folding mechanism, and pressing and conveying the single plastic film onto a lower-layer conveying belt;
and step five, positioning and conveying a single plastic film on a lower layer conveying belt after folding, carrying out hot-pressing sealing, cold-pressing leveling, and finally carrying out die cutting to form bags, thereby completing the bag making process of the flat plastic film.
2. The fully automatic flat sheet plastic film bag making method according to claim 1, wherein the circumferential surface of said cam contacting the single plastic film is covered with a layer of gum.
3. The fully automatic flat sheet plastic film bag making method according to claim 1, wherein the common stroke of the plastic film and the cam is one third to three quarters of the length of the cam circumferential surface.
4. The full-automatic flat sheet plastic film bag-making method according to claim 1, wherein the thickness of the plastic film is PE, PVC or POP film between 0.6 and 30 filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809513.5A CN108973230B (en) | 2018-07-23 | 2018-07-23 | Full-automatic flat-sheet plastic film bag making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809513.5A CN108973230B (en) | 2018-07-23 | 2018-07-23 | Full-automatic flat-sheet plastic film bag making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108973230A CN108973230A (en) | 2018-12-11 |
| CN108973230B true CN108973230B (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810809513.5A Active CN108973230B (en) | 2018-07-23 | 2018-07-23 | Full-automatic flat-sheet plastic film bag making method |
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Citations (4)
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| CN201367146Y (en) * | 2008-12-31 | 2009-12-23 | 安徽中烟工业公司 | Device for instantaneously releasing negative pressure in cavity of label paper wind absorbing wheel in BE packing machine |
| CN104016157A (en) * | 2014-05-28 | 2014-09-03 | 浙江华岳包装机械有限公司 | Synchronous sticking film automatic takeup and putdown mechanism |
| CN204588179U (en) * | 2015-04-17 | 2015-08-26 | 冀秋香 | The front edge paper feeder of die cutting machine for printing |
| CN104972695A (en) * | 2014-04-02 | 2015-10-14 | 平阳县凯达包装机械厂 | Automatic opening pressing machine for valve port cement bags |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0537127A1 (en) * | 1991-09-06 | 1993-04-14 | Fas Converting Machinery Aktiebolag | Method and arrangement in a bag-making machine for forming weld lines in a web fed therethrough |
| CN2573221Y (en) * | 2002-10-18 | 2003-09-17 | 刘为成 | Automatic sheet feeding system for corrugated board printing press |
| CN101134377A (en) * | 2007-06-21 | 2008-03-05 | 王秀来 | Plastic bag folding press |
| CN102120369A (en) * | 2010-11-30 | 2011-07-13 | 厦门亚太创新机器有限公司 | Plastic bag folding machine |
| CN102689455B (en) * | 2012-06-21 | 2015-02-18 | 浙江金石包装有限公司 | Composite-bag-surface-scratch-prevention bag making method and system |
| CN205871460U (en) * | 2016-08-11 | 2017-01-11 | 三峡大学 | Label spouts a yard device |
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- 2018-07-23 CN CN201810809513.5A patent/CN108973230B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201367146Y (en) * | 2008-12-31 | 2009-12-23 | 安徽中烟工业公司 | Device for instantaneously releasing negative pressure in cavity of label paper wind absorbing wheel in BE packing machine |
| CN104972695A (en) * | 2014-04-02 | 2015-10-14 | 平阳县凯达包装机械厂 | Automatic opening pressing machine for valve port cement bags |
| CN104016157A (en) * | 2014-05-28 | 2014-09-03 | 浙江华岳包装机械有限公司 | Synchronous sticking film automatic takeup and putdown mechanism |
| CN204588179U (en) * | 2015-04-17 | 2015-08-26 | 冀秋香 | The front edge paper feeder of die cutting machine for printing |
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| CN108973230A (en) | 2018-12-11 |
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