CN107696661B

CN107696661B - Production process of plastic packaging bag

Info

Publication number: CN107696661B
Application number: CN201710919162.9A
Authority: CN
Inventors: 张宏彦
Original assignee: Chongqing Fumei Packaging Printing Co ltd
Current assignee: Chongqing Fumei Packaging Printing Co ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2020-09-01
Anticipated expiration: 2037-09-30
Also published as: CN107696661A

Abstract

The invention belongs to the field of plastic packaging bag manufacturing, and particularly discloses a production process of a plastic packaging bag, which adopts a compounding device to compound the plastic packaging bag, and comprises the following production steps: (1) respectively fixing the aluminum foil and the inner film on a unreeling roller to compound the aluminum foil and the inner film to form a plastic film; (2) compounding the plastic film and the printing film in the step (1) through a plastic compounding device; wherein: the winding tension of the winding roller is 140-160N, the unwinding tension of the aluminum foil unwinding roller is 70-90N, and the unwinding tension of the inner film unwinding roller is 95-110N; the humidity is 55-65%. The process can avoid deformation of the plastic packaging bag during production.

Description

Production process of plastic packaging bag

Technical Field

The invention relates to the field of plastic packaging bag manufacturing, in particular to a production process of a plastic packaging bag.

Background

The plastic packaging bag is a packaging bag which takes plastic as a raw material and is used for producing various articles in daily life, and is widely used in daily life and industrial production. The common plastic packaging bag is mostly made of polyethylene film, and the film is nontoxic, so the plastic packaging bag can be used for containing food. The plastic packaging bag actually comprises three layers of plastic films, namely an inner film, an aluminum foil and a printed film, and when the plastic packaging bag is produced, the inner film, the aluminum foil and the printed film are compounded into a film and then the film is manufactured into the packaging bag.

The existing plastic packaging bag is compounded by compounding a printing film and an aluminum foil into a layer of plastic film and then compounding the plastic film with an inner film to form the plastic packaging film, wherein the plastic film needs to be conveyed for multiple times during compounding. However, the existing process has the following problems: the thickness of the printing film is 1.2 threads, the thickness of the aluminum foil is 0.65 threads, the thickness of the inner film is 5 threads or more, when the printing film and the aluminum foil are firstly compounded together and then compounded with the inner film, the plastic film is deformed due to large tension force caused by the thin thickness of the printing film and the aluminum foil in the conveying process.

Disclosure of Invention

The invention aims to provide a production process of a plastic packaging bag, which can avoid deformation in the production process of the plastic packaging bag.

In order to achieve the above purpose, the basic scheme of the invention is as follows: a production process of plastic packaging bags adopts a compounding device to compound the plastic packaging bags, wherein the compounding device comprises a rack, an unwinding roller, a winding roller, a conveying structure, an extruding structure, a drying structure, a driving structure and a gluing structure, the unwinding roller and the winding roller are respectively and rotatably connected to two ends of the rack, the unwinding roller and the winding roller are respectively driven by the driving structure, the gluing structure, the extruding structure, the conveying structure and the drying structure are sequentially fixed on the rack, the production process further comprises a connecting frame, one end of the connecting frame is rotatably connected to the rack, the other end of the connecting frame is rotatably connected with an extruding roller, and the extruding roller abuts against the winding roller;

the production steps comprise: (1) respectively fixing the aluminum foil and the inner film on a unreeling roller to compound the aluminum foil and the inner film to form a plastic film;

(2) compounding the plastic film and the printing film in the step (1) through a plastic compounding device;

wherein: the winding tension of the winding roller is 140-160N, the unwinding tension of the aluminum foil unwinding roller is 70-90N, and the unwinding tension of the inner film unwinding roller is 95-110N; the humidity is 55-65%.

When the scheme is adopted, the inner film and the aluminum foil are respectively fixed on the unwinding roller to realize unwinding, and the compounded plastic film is wound on the winding roller to be wound. During compounding, after the aluminum foil and the inner film are unreeled, the aluminum foil or the inner film is contacted with the adhesive structure to complete adhesion, and then the aluminum foil and the inner film are extruded together through the extrusion structure. The conveying structure plays a conveying role. And the plastic films bonded together are dried by the drying mechanism to realize compounding and finally wound on a winding roller. When rolling, the extrusion roller extrudees the wind-up roll and can be inseparable when guaranteeing the plastic film rolling on the wind-up roll, avoids producing the bubble. Because link one end is rotated with the frame and is connected, so in the winding-up roll rolling-up in-process, roll up footpath crescent, the link rotates along with the increase of rolling up footpath, ensures that can extrude the roller and can realize the extrusion to the wind-up roll always.

The plastic film and the printing film are then laminated in the same manner as described above.

Compared with the prior art, the inner film and the aluminum foil are firstly compounded, so that the inner film is thicker than the printing film because the thickness of the inner film is more than 5 threads, and deformation is not easy to generate after the inner film is compounded into the plastic film. In addition, the humidity, the tension and the like during compounding are controlled, and the compounding effect is better.

Further, still include air pump, trachea, fixture block and piston, be equipped with the cavity in the wind-up roll, trachea one end and air pump intercommunication, the trachea other end and cavity intercommunication, a plurality of intercommunication chambeies of unreeling roller circumference, intercommunication chamber and cavity intercommunication, fixture block and piston fixed connection, piston and intercommunication chamber sliding connection, be equipped with the valve on the trachea. And starting the air pump, and filling air into the cavity through the air pipe by using the air pump, so that the air pressure in the cavity is gradually increased. Because wind-up roll circumference is equipped with a plurality of intercommunication chambeies, and the intercommunication chamber communicates with the cavity again, so when atmospheric pressure in the cavity increases, promote the piston and outwards slide along the intercommunication chamber, because piston and fixture block fixed connection, then the piston drives the fixture block and outwards removes together, and the fixture block stretches out the intercommunication chamber gradually and with the contact of reel inner wall and fix the reel on the wind-up roll. The valve is then closed to bring the air pressure in the cavity to a fixed value.

Further, the viscose structure includes pivot, magnetism mechanism and the glue solution groove that contains glue, the pivot is rotated and is connected on glue solution groove upper portion, and the plastic film contacts with the pivot, magnetism mechanism includes opposite at least a pair of magnetic pole of magnetism, the magnetic pole set up in the pivot both sides, be equipped with the cutting in the pivot the conductor board of the magnetic induction line that magnetism mechanism produced. The upper part of the rotating shaft is contacted with the co-extrusion surface of the printing film or the inner film, and the lower part of the rotating shaft is immersed into the glue tank, so that the rotating shaft can carry the adhesive in the glue tank to the co-extrusion surface contacted with the single-layer plastic film in the rotating process, and the single-layer plastic film is coated with glue; therefore, the two sides of the rotating shaft are provided with the pair of magnetic poles with opposite magnetism, a fixed magnetic field can be generated in the space for placing the rotating shaft, the rotating shaft can drive the conductor plate arranged in the rotating shaft to continuously cut magnetic induction lines in the magnetic field in the rotating process, the conductor plate generates eddy current effect to generate heat, and the heat generated by the conductor plate is immediately transmitted to the outer surface of the rotating shaft for heating the printing film or the inner film, so that the adhesive effect of the adhesive is better.

The device further comprises an alarm structure, wherein the alarm structure comprises an infrared transmitter, an infrared receiver, a controller and a buzzer, the infrared transmitter and the infrared receiver are respectively fixed on the rack, and the infrared transmitter and the infrared receiver are oppositely distributed along the axial direction of the rolled plastic film and are positioned on two corresponding sides of the unwinding roller; the infrared receiver and the buzzer are respectively and electrically connected with the controller. When the unwinding roller unwinds, the roll diameter on the reel will gradually diminish, and when the plastic film on the unwinding roller reel is soon transmitted, the infrared receiver receives the signal of the infrared generator and transmits the signal to the controller, and the controller receives the signal to control the buzzer to alarm, so as to remind workers of replacing the reel in time.

Further, still include odor dispenser, odor dispenser is connected with the controller electricity, and the nontoxic odor that odor dispenser was used off can transmit workman's nose, reminds the workman to change the reel, and it is better with bee calling organ cooperation result of use.

Furthermore, the drying temperature in the drying structure is increased in a gradient manner, so that the drying effect is better.

Furthermore, the conveying speed during compounding is 80-110m/min, so that the compounding effect is better.

Drawings

FIG. 1 is a schematic view showing the structure of a plastic film laminating apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of an adhesive construction;

fig. 3 is a schematic view of a wind-up roll.

Detailed Description

The present invention will be described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises an unwinding roller 1, a conveying roller 2, a glue groove 3, a rotating shaft 4, an extrusion structure 5, a drying structure 6, a winding roller 7, an extrusion roller 8, a connecting frame 9, a plastic film 10, a printing film 11, a conductor plate 12, a magnetic mechanism 13, a cavity 14, a fixture block 15, a piston 16 and an air pipe 17.

The embodiment is basically as shown in the attached figures 1 to 3: the utility model provides a production technology of plastic packaging bag, adopts set composite to compound plastic packaging bag, and wherein set composite includes the frame, unreel roller 1, wind-up roll 7, the transport structure, extrusion structure 5, stoving structure 6, drive structure and rubberizing structure, unreels roller 1 and wind-up roll 7 and rotates respectively and connect in the frame both ends, unreel roller 1 and wind-up roll 7 respectively by the drive structure drive, rubberizing structure, extrusion structure 5, transport structure and stoving structure 6 fix in proper order in the frame. The transport structure is a plurality of transport rollers 22. The winding machine also comprises a connecting frame 9, one end of the connecting frame 9 is rotatably connected to the machine frame, the other end of the connecting frame 9 is rotatably connected with an extrusion roller 8, and the extrusion roller 8 abuts against the winding roller 7;

the production steps comprise: (1) respectively fixing the aluminum foil and the inner film on the unwinding roller 1, and compounding the aluminum foil and the inner film to form a plastic film 10;

(2) compounding the plastic film 10 and the printing film 11 in the step (1) through a plastic compounding device;

wherein: the winding tension of the winding roller 7 is 140-160N, the unwinding tension of the aluminum foil unwinding roller 1 is 70-90N, and the unwinding tension of the inner film unwinding roller 1 is 95-110N; the humidity is 55-65%.

The drying temperature in the drying structure 6 is increased in a gradient manner, so that the drying effect is better.

The conveying speed during compounding is 100m/min, so that the compounding effect is better.

When the scheme is adopted, the inner film and the aluminum foil are respectively fixed on the unwinding roller 1 to realize unwinding, and the compounded plastic film 10 is wound on the winding roller 7 to be wound. During compounding, after the aluminum foil and the inner film are unreeled, the aluminum foil or the inner film is contacted with the adhesive structure to complete adhesion, and then the aluminum foil and the inner film are extruded together through the extrusion structure 5. The conveying structure plays a conveying role. The plastic films bonded together are dried by the drying mechanism to realize the compounding and finally wound on the winding roller 7. When rolling, the extrusion roller 8 extrudes the wind-up roller 7 to ensure that the plastic film can be tightly rolled on the wind-up roller 7, thereby avoiding generating bubbles. Because link 9 one end is connected with the frame rotation, so in the winding-up roll 7 rolling in-process, roll up footpath crescent, link 9 rotates along with the increase of rolling up footpath, ensures that can extrude roller 8 can realize the extrusion to winding-up roll 7 always.

The plastic film 10 and the printing film 11 are then laminated in the same manner as before.

Compared with the prior art, the inner film and the aluminum foil are firstly compounded, so that the thickness of the inner film is more than 5 threads and is thicker than the printing film 11, and the inner film is not easy to deform after being compounded into the plastic film 10. In addition, the humidity, the tension and the like during compounding are controlled, and the compounding effect is better.

The plastic composite device further comprises an air pump, an air pipe 17, a clamping block 15 and a piston 16, a cavity 14 is formed in the wind-up roll 7, one end of the air pipe 17 is communicated with the air pump, the other end of the air pipe 17 is communicated with the cavity 14, a plurality of communication cavities are formed in the circumferential direction of the wind-up roll 1 and communicated with the cavity 14, the clamping block 15 is fixedly connected with the piston 16, the piston 16 is connected with the communication cavities in a sliding mode, and a valve is arranged on the air pipe 17. The air pump is started, and air is filled into the cavity 14 through the air pipe 17 by the air pump, so that the air pressure in the cavity 14 is gradually increased. Because the winding roller 7 is circumferentially provided with a plurality of communicating cavities which are communicated with the cavity 14, when the air pressure in the cavity 14 is increased, the piston 16 is pushed to slide outwards along the communicating cavities, because the piston 16 is fixedly connected with the fixture block 15, the piston 16 drives the fixture block 15 to move outwards together, and the fixture block 15 gradually extends out of the communicating cavities, contacts with the inner wall of the winding drum and fixes the winding drum on the winding roller 7. The valve is then closed so that the air pressure in the cavity 14 is at a fixed value.

The viscose structure includes pivot 4, magnetic mechanism 13 and the glue solution groove 3 that contains glue, and pivot 4 rotates and connects in glue solution groove 3 upper portion, and the plastic film contacts with pivot 4, and magnetic mechanism 13 includes at least a pair of magnetic pole that magnetism is opposite, and the magnetic pole sets up in pivot 4 both sides, is equipped with the conductor board 12 of the magnetic induction line that cutting magnetic mechanism 13 produced in the pivot 4. The upper part of the rotating shaft 4 is contacted with the co-extrusion surface of the printing film 11 or the inner film, and the lower part of the rotating shaft 4 is immersed into the glue tank 3, so that the rotating shaft 4 can carry the adhesive in the glue tank 3 to the co-extrusion surface contacted with the single-layer plastic film 10 in the rotating process, and the single-layer plastic film 10 is coated with glue; therefore, a pair of magnetic poles with opposite magnetism are arranged on two sides of the rotating shaft 4, a fixed magnetic field can be generated in the space for placing the rotating shaft 4, the rotating shaft 4 can drive the conductor plate 12 arranged in the rotating shaft to continuously cut magnetic induction lines in the magnetic field, an eddy current effect is generated in the conductor plate 12 to generate heat, and the heat generated by the conductor plate 12 is immediately transmitted to the outer surface of the rotating shaft 4 to heat the printing film 11 or the inner film, so that the adhesion effect of the adhesive is better. The automatic unwinding device comprises an unwinding roller 1, an unwinding device, an infrared emitter, an infrared receiver, a controller and a buzzer, wherein the unwinding device is arranged on the unwinding roller 1 and comprises a winding roller, a winding roller and a winding drum; the infrared receiver and the buzzer are respectively and electrically connected with the controller. When the unwinding roller 1 unwinds, the roll diameter on the reel will gradually diminish, and when the plastic film on the unwinding roller 1 is soon transmitted, the infrared receiver receives the signal of the infrared generator and transmits the signal to the controller, and the controller receives the signal to control the buzzer to alarm, so as to remind the worker to replace the reel in time.

Still include the stink distributor among the alarm structure, the stink distributor is connected with the controller electricity, and the nontoxic stink that the stink distributor distributes can transmit to workman's nasal part, reminds the workman to change the reel, and is better with bee calling organ cooperation result of use.

The infrared transmitter used in the embodiment is a patch type infrared transmitting tube of IR67-21C/TR8 model, and the infrared receiver used in the embodiment is EE-SX1128 model; the controller is a Shuichi industrial controller with UNO-2170 model; the buzzer 32 used is a piezoelectric active intermittent buzzer of type YXDZ-YD3015 II.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The production process of the plastic packaging bag is characterized in that a composite device is adopted to composite the plastic packaging bag, wherein the composite device comprises a rack, an unwinding roller, a winding roller, a conveying structure, an extruding structure, a drying structure, a driving structure and a gluing structure, the unwinding roller and the winding roller are respectively and rotatably connected to two ends of the rack, the unwinding roller and the winding roller are respectively driven by the driving structure, the gluing structure, the extruding structure, the conveying structure and the drying structure are sequentially fixed on the rack, the production process further comprises a connecting frame, one end of the connecting frame is rotatably connected to the rack, the other end of the connecting frame is rotatably connected with an extruding roller, and the extruding roller is abutted against the winding roller; the gluing structure comprises a rotating shaft, a magnetic mechanism and a glue tank filled with glue, the rotating shaft is rotatably connected to the upper part of the glue tank, a plastic film is contacted with the rotating shaft, the magnetic mechanism comprises at least one pair of magnetic poles with opposite magnetism, the magnetic poles are arranged on two sides of the rotating shaft, and a conductor plate for cutting a magnetic induction line generated by the magnetic mechanism is arranged in the rotating shaft; the compound device also comprises an air pump, an air pipe, a fixture block and a piston, wherein a cavity is arranged in the wind-up roll, one end of the air pipe is communicated with the air pump, the other end of the air pipe is communicated with the cavity, a plurality of communication cavities are arranged on the circumference of the unwinding roll, the communication cavities are communicated with the cavity, the fixture block is fixedly connected with the piston, the piston is slidably connected with the communication cavities, and a valve is arranged on the air pipe; the plastic composite device also comprises an alarm structure, the alarm structure comprises an infrared transmitter, an infrared receiver, a controller and a buzzer, the infrared transmitter and the infrared receiver are respectively fixed on the frame, and the infrared transmitter and the infrared receiver are oppositely distributed along the axial direction of the rolled plastic film and are positioned on two corresponding sides of the unwinding roller; the infrared receiver and the buzzer are respectively and electrically connected with the controller; the alarm structure also comprises a stink distributor which is electrically connected with the controller;

2. A process for manufacturing a plastic package according to claim 1, wherein the temperature of the oven is increased in a gradient in the oven structure.

3. A process for the production of a plastic packaging bag according to claim 1, wherein the speed of conveyance during compounding is 80-110 m/min.