CN111231466A - Degradable biodegradable film and preparation method thereof - Google Patents
Degradable biodegradable film and preparation method thereof Download PDFInfo
- Publication number
- CN111231466A CN111231466A CN202010034614.7A CN202010034614A CN111231466A CN 111231466 A CN111231466 A CN 111231466A CN 202010034614 A CN202010034614 A CN 202010034614A CN 111231466 A CN111231466 A CN 111231466A
- Authority
- CN
- China
- Prior art keywords
- biodegradable film
- roller
- degradable
- film
- code spraying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/14—Printing or colouring
- B32B38/145—Printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/10—Mechanisms in which power is applied to web-roll spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
- B65H35/0073—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a degradable biodegradable film and a preparation method thereof, wherein the method comprises the following steps: a. adjusting the tension adjusting roller to an initial position; b. adjusting the first cylinder and the motor to initial positions; c. switching the state of the switching device; d. cleaning a traction roller and a tension adjusting roller; e. feeding by a hopper; f. blowing to form a film by an up-blowing method; g. converting and winding; h. and (5) converting the code spraying. The invention can shorten the production line of the degradable biodegradable film, save the occupied area, and the tension adjustment of the degradable biodegradable film during the rolling operation and the tension control of the degradable biodegradable film during the code spraying operation are both positioned at the central point position of the cross design, thereby being convenient for the conversion of the tension adjustment of the degradable biodegradable film, not only ensuring the rolled degradable biodegradable film to be flat and avoiding the edge folding phenomenon, but also ensuring the degradable biodegradable film to be spread in a whole width during the unwinding and code spraying, ensuring the code spraying to be uniform, and obviously improving the manufacturing quality of the degradable biodegradable film.
Description
Technical Field
The invention belongs to the technical field of plastic films, and particularly relates to a degradable biodegradable film and a preparation method thereof.
Background
Most of the traditional plastics have stable performance, and are not easy to degrade rapidly under the action of various environmental factors in nature, so that the waste plastics have serious harm to the environment, namely, white pollution. Since the 21 st century, the global environment is protected, a resource circulation type society is constructed, a sustainable development road is formed, and the global focus and urgent tasks are formed. The biodegradable plastic can be corroded and digested by microorganisms in a short time to be decomposed into carbon dioxide, water, other biomass and inorganic matters, and is an environment low-load material. The raw material of the biodegradable packaging film in the market at present mainly comprises PBAT (terephthalic acid-adipic acid-butanediol copolyester), but PBAT is very soft and has low yield strength, in order to achieve the use performance of traditional plastics, PLA (polylactic acid) is added to improve the stiffness and the yield strength through blending modification at present, meanwhile, starch or inorganic components are added to reduce the cost, and the biodegradable film packaging product is manufactured after the modified master batch is prepared. The cost of the biodegradable plastic material is generally more than one time higher than that of the traditional petrochemical plastic, the application of the biodegradable plastic material on disposable plastic products is seriously restricted, the yield strength of the biodegradable plastic material is improved by increasing the content of PLA in the biodegradable material, the thickness of the biodegradable plastic film can be reduced, and the use amount of the biodegradable material is reduced so as to reduce the cost of biodegradable packaging. However, the technical bottleneck at present is that after the content of PLA in the single-layer PBAT + PLA biodegradable film is more than 35%, the heat sealing stability is very low, the heat sealing strength is sharply reduced after 6 months, and the use performance of the packaging bag is lost.
In order to solve the technical problems, Chinese patent No. 2019.09.27 discloses an invention patent application named as a biodegradable film and a manufacturing method thereof (application No. CN201910926899.2), wherein PBAT with higher melt strength and stable heat sealing performance is added with less than 35% of PLA to be used as an inner layer and an outer layer to drive a biodegradable film prepared by adding more than 35% of PLA to PBAT with lower melt strength but high yield strength to an intermediate layer, the yield strength of the biodegradable film is high, and the heat sealing performance stability is long. In the manufacturing process of the film, the raw materials are subjected to multilayer casting or multilayer co-extrusion film blowing to obtain the biodegradable film, and when code spraying is carried out on the surface of the film, an ink-jet printer is arranged between the co-extrusion film blowing and the rolling process, the technology of the ink-jet printer belongs to the prior art, and if Chinese patent application No. 2016.11.26 discloses a utility model named as a film code-jet printer (patent No. CN201621277692.5), the technical effect of code spraying on the surface of the film is realized. Generally, an ink jet printer is arranged after the winding process, the winding and ink jet printing operation is designed in a straight line, and the following technical problems are solved: (1) the production line for manufacturing the biodegradable film becomes long, and the occupied area becomes large; (2) because the production line is longer, the film tension is not easy to control, and when the code spraying head sprays codes on the film, the film has a folding phenomenon, so that the code spraying is not uniform, and the manufacturing quality of the film is influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a degradable biodegradable film and a preparation method thereof, through the state conversion of the conversion device, the degradable biodegradable film in the rolling state and the degradable biodegradable film in the code spraying state are in a cross design, so that the preparation production line of the degradable biodegradable film is shortened, the occupied area is saved, and the tension adjustment of the degradable biodegradable film during the winding operation and the tension control of the degradable biodegradable film during the code spraying operation are both in the central point position of the cross design, so that the tension adjustment conversion of the degradable biodegradable film is facilitated, the leveling of the wound degradable biodegradable film can be ensured, the edge folding phenomenon is avoided, the whole spreading of the degradable biodegradable film during the code spraying can be ensured, the code spraying is uniform, and the manufacturing quality of the degradable biodegradable film is obviously improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the degradable biodegradable film comprises an inner layer, a middle layer and an outer layer, wherein the middle layer is arranged between the inner layer and the outer layer,
the inner layer comprises the following components in percentage by weight: PBAT 20% -100%, PLA 0% -35%, starch 0% -30%, inorganic powder 0% -30%, biodegradable material 0% -50%, and modifying auxiliary agent 0% -15%;
the middle layer comprises the following components in percentage by weight: PVA 30-75%, PLA 0-60%, PBAT 0-60%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 10-40%;
the outer layer comprises the following components in percentage by weight: PBAT 20-100%, PLA 0-35%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 0-15%.
The preparation method of the degradable biodegradable film is characterized by comprising the following steps:
a. adjusting a tension adjusting roller arranged on the bottom surface of the rolling and code spraying integrated platform to an initial position: the locking piece that sets up on the fixed plate of the integrative platform bottom surface of sign indicating number is unscrewed earlier, exerts the effort that makes progress to the guide bar again, and the vertical upward movement of guide bar in the through-hole of fixed plate when tension adjustment seat contacts the fixed plate, screws up the locking piece, fixes the guide bar on the fixed plate, and the tension adjustment roller on the tension adjustment seat is adjusted initial position this moment. Because the intensity of degradable biodegradable plastic film is certain for the tension to degradable biodegradable plastic film is adjusted in certain extent, consequently need adjust two adjacent differences in height to the biodegradable plastic film strong point, in order to obtain the difference in height of design, just need adjust the initial position with the tension adjusting roller, be convenient for to the control of tension adjusting roller displacement.
b. And adjusting the first air cylinder to the initial position, and then adjusting the motor to the initial position.
c. The state of the switching device is switched:
(1) opening first cylinder, first cylinder promotes the movable plate, and the movable plate moves on the guide rail, because be equipped with first tooth portion on the movable plate, the pivot of conversion platform bottom is equipped with the disc, and this disc is equipped with the second tooth portion, second tooth portion and first tooth portion intermeshing, therefore the movable plate drives disc anticlockwise rotation, and the anticlockwise rotation takes place for the pivot of conversion platform bottom this moment, through the distance that control first cylinder promoted for the conversion platform anticlockwise rotation 90.
(2) And starting the motor, driving the rolling and code spraying integrated platform to rotate clockwise by 90 degrees by the motor, and keeping the rolling and code spraying integrated platform in a vertical state.
d. The traction roller and the tension adjusting roller on the bottom surface of the integrated platform for code spraying and winding are cleaned, so that the influence of impurities on the winding of the degradable biodegradable film is avoided.
e. And feeding the inner layer, the middle layer and the outer layer of the degradable biodegradable film respectively by a hopper.
f. And carrying out blow molding film forming by an up-blowing method through a three-layer co-extrusion film blowing machine to obtain the degradable biodegradable film. Specifically, the master batch of the inner layer is added into an inner layer extruder of the three-layer co-extrusion film blowing machine, the master batch of the outer layer is added into an outer layer extruder of the three-layer co-extrusion film blowing machine, and the master batch of the middle layer is added into a middle layer extruder of the three-layer co-extrusion film blowing machine.
g. And (3) converting and rolling the degradable biodegradable film:
(1) adjusting the setting position of the tension adjusting roller: the locking piece on the fixing plate is unscrewed, downward acting force is applied to the guide rod, the guide rod vertically moves downwards in the through hole of the fixing plate, and when the tension adjusting roller moves downwards to a set position below the traction roller, the locking piece is screwed down, and the guide rod is fixed on the fixing plate.
(2) The degradable biodegradable film winding device is characterized in that a degradable biodegradable film is arranged on a cooling roller and wound on a traction roller and a tension adjusting roller, then a first sleeve is arranged on a first winding roller, the first winding roller is rotated through a first rotating device, the first winding roller pulls the degradable biodegradable film to be wound, the degradable biodegradable film is wound on the first sleeve, when the degradable biodegradable film on the first sleeve is wound to a set length, the three-layer co-extrusion film blowing machine and the first rotating device are stopped to work, the degradable biodegradable film is cut off again, and then the first sleeve is taken out from the first winding roller.
h. And (3) converting and spraying the degradable biodegradable film:
(1) and controlling the first air cylinder to return to the initial position, moving the movable plate on the guide rail, driving the disc to rotate clockwise by the movable plate, and rotating the rotating shaft at the bottom of the conversion table clockwise to enable the conversion table to rotate 90 degrees clockwise.
(2) The motor is rotated reversely, the motor drives the rolling and code spraying integrated platform to rotate 90 degrees anticlockwise, and the rolling and code spraying integrated platform is kept in a horizontal state.
(3) The first sleeve which is wound with the biodegradable film is arranged on the unwinding device, the biodegradable film on the first sleeve is pulled out and attached to the top surface of the winding and code spraying integrated platform, then the second sleeve is arranged on the second winding roller, the second winding roller is rotated through the second rotating device, the second sleeve pulls the degradable biodegradable film to be wound, the first sleeve on the unwinding device unwinds the degradable biodegradable film, the code spraying head is moved through the moving device, the code spraying work is carried out on the degradable biodegradable film above the winding and code spraying integrated platform through the code spraying head, and after the second sleeve is wound, the second sleeve is taken out from the second winding roller.
Furthermore, in the step d, an inclined baffle is arranged in the lower area of the traction roller and the tension adjusting roller, then the traction roller and the tension adjusting roller are cleaned by the spray head, and sewage is discharged into a sewage collecting tank. When the traction roller and the tension adjusting roller are cleaned, sewage is blocked by the baffle and is recycled, and the phenomenon that the structure is damaged due to the pollution of the sewage to the first cylinder, the movable plate and the disc is avoided.
Further, in the step f, the extrusion temperature of the extruder is controlled to be 160-170 ℃, so that the low tensile strength of the film is avoided.
Further, in step g, when the biodegradable film on the first sleeve is rolled to a set length, the biodegradable film is clamped by the clamping device, the clamping device comprises an upper clamping roller and a lower clamping roller which are distributed vertically, the upper clamping roller is connected with the second cylinder, the upper clamping roller above the upper clamping roller moves downwards under the action of downward driving of the second cylinder, the upper clamping roller and the lower clamping roller clamp the biodegradable film tightly, and then the biodegradable film is cut off. When adopting cutting device to cut off degradable biodegradable plastic film, the slip phenomenon can appear in degradable biodegradable plastic film, leads to the section of degradable biodegradable plastic film not to flush, consequently when cutting off degradable biodegradable plastic film, sets up pinch roll and lower pinch roll and carry out clamping action to degradable biodegradable plastic film, avoids the slip phenomenon to appear in degradable biodegradable plastic film for the section of degradable biodegradable plastic film flushes.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. before the degradable biodegradable film is converted and rolled, the movable plate drives the disc to rotate anticlockwise, the rotating shaft at the bottom of the conversion table rotates anticlockwise, and the conversion table rotates anticlockwise by 90 degrees by controlling the pushing distance of the first air cylinder, so that the conversion table faces to the east and west during the conversion and rolling of the degradable biodegradable film; before the sign indicating number is spouted in the biodegradable plastic film conversion, initial position is got back to first cylinder of control, the movable plate moves on the guide rail, the movable plate drives disc clockwise rotation, clockwise rotation takes place in the pivot of conversion platform bottom this moment, make conversion platform clockwise rotation 90, make conversion platform north and south orientation when the biodegradable plastic film conversion rolling, the state conversion through conversion equipment like this, make the biodegradable plastic film of rolling state and the biodegradable plastic film who spouts the sign indicating number state be the cross design, make the preparation production line of biodegradable plastic film shorten, save area.
2. In the conversion and rolling process of the degradable biodegradable film, the setting position of the tension adjusting roller is adjusted, so that the height difference is generated between the traction roller and the tension adjusting roller, the height difference between two adjacent pairs of support points of the degradable biodegradable film is adjusted, the tension of the degradable biodegradable film is adjusted within a certain range, at the moment, the rolling and code-spraying integrated platform keeps a vertical state, and the rolling and code-spraying integrated platform plays a role in mounting the traction roller and the tension adjusting roller; when the code is spouted in the conversion of degradable biodegradable plastic film, with the motor reversal, the motor drives the rolling and spouts a yard integrative platform counter-clockwise turning 90 for the rolling is spouted a yard integrative platform and is kept the horizontality, and degradable biodegradable plastic film is attached on the top surface that the integrative platform was spouted in the rolling smoothly this moment, and the integrative platform is spouted in the rolling and is provided a work platform, plays the supporting role simultaneously, makes degradable biodegradable plastic film unreel and spout the whole width of cloth when spouting the code and spread. Therefore, the tension adjustment of the degradable biodegradable film during rolling and the tension control of the degradable biodegradable film during code spraying are both in the central point position of the cross design, so that the tension adjustment conversion of the degradable biodegradable film is facilitated. The invention can adjust the tension of the rolled degradable biodegradable film, ensure the rolled degradable biodegradable film to be flat, avoid the edge folding phenomenon, ensure the degradable biodegradable film to be spread in a whole width when unreeling and spraying the code, ensure the code spraying to be uniform and obviously improve the manufacturing quality of the degradable biodegradable film.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic structural diagram of a traction roller and a tension adjusting roller which are arranged on the bottom surface of a rolling code-spraying integrated platform and used for cleaning the traction roller and the tension adjusting roller;
FIG. 2 is a schematic structural diagram of connection between a motor and a rolling and code-spraying integrated platform in the invention;
FIG. 3 is a schematic view of the connection between the first cylinder and the moving plate according to the present invention;
FIG. 4 is a schematic view of the clamping device of the present invention;
FIG. 5 is a schematic structural view of the present invention during the rolling and converting of the biodegradable film;
FIG. 6 is a perspective view of the present invention in a state of being rolled up by converting the biodegradable film;
FIG. 7 is a schematic structural diagram of the biodegradable film in the inkjet printing process.
In the figure, 1-rolling and code-spraying integrated platform; 2, fixing a plate; 3-a guide rod; 4-a locking member; 5-a tension adjusting seat; 6-a tension adjusting roller; 7-a traction roller; 8, a motor; 9-a rotating shaft; 10-a disc; 11-a second tooth; 12-a first cylinder; 13-moving the plate; 14-a guide rail; 15-first tooth; 16-a chill roll; 17-an upper pinch roller; 18-a lower pinch roller; 19-a baffle plate; 20-a first wind-up roll; 21-a second cylinder; 22-three-layer co-extrusion film blowing machine; 23-a degradable biodegradable film; 24-an unwinding device; 25-a second wind-up roll; 26-spraying the wharf; 27-a transfer station.
Detailed Description
As shown in fig. 1 to 7, the biodegradable film of the present invention comprises an inner layer, a middle layer and an outer layer, wherein the middle layer is disposed between the inner layer and the outer layer,
the inner layer comprises the following components in percentage by weight: PBAT 20-100%, PLA 0-35%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 0-15%.
The middle layer comprises the following components in percentage by weight: PVA 30-75%, PLA 0-60%, PBAT 0-60%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 10-40%.
The outer layer comprises the following components in percentage by weight: PBAT 20-100%, PLA 0-35%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 0-15%.
The preparation method of the degradable biodegradable film comprises the following steps:
a. adjusting a tension adjusting roller 6 arranged on the bottom surface of the rolling and code-spraying integrated platform 1 to an initial position: firstly, the locking part 4 arranged on the fixing plate 2 on the bottom surface of the rolling code-spraying integrated platform 1 is unscrewed, then upward acting force is applied to the guide rod 3, the guide rod 3 vertically moves upwards in the through hole of the fixing plate 2, when the tension adjusting seat 5 contacts the fixing plate 2, the locking part 4 is screwed, the guide rod 3 is fixed on the fixing plate 2, and the tension adjusting roller 6 on the tension adjusting seat 5 is adjusted to the initial position. Because the intensity of degradable biodegradable plastic film is certain for the tension to degradable biodegradable plastic film is adjusted in certain extent, consequently need adjust two adjacent differences in height to the biodegradable plastic film strong point, in order to obtain the difference in height of design, just need adjust the initial position with tension adjusting roller 6, be convenient for to the control of tension adjusting roller 6 displacement.
b. The first cylinder 12 is adjusted to the initial position and the motor 8 is adjusted to the initial position.
c. The state of the switching device is switched:
(1) the first air cylinder 12 is started, the first air cylinder 12 pushes the moving plate 13, the moving plate 13 moves on the guide rail 14, the moving plate 13 is provided with a first tooth portion 15, the rotating shaft 9 at the bottom of the conversion table 27 is provided with the disc 10, the disc 10 is provided with a second tooth portion 11, and the second tooth portion 11 is meshed with the first tooth portion 15, so that the moving plate 13 drives the disc 10 to rotate anticlockwise, at the moment, the rotating shaft 9 at the bottom of the conversion table 27 rotates anticlockwise, and the conversion table 27 rotates anticlockwise by 90 degrees by controlling the pushing distance of the first air cylinder 12.
(2) The motor 8 is started, so that the motor 8 drives the rolling code spraying integrated platform 1 to rotate 90 degrees clockwise, and the rolling code spraying integrated platform 1 keeps a vertical state.
d. The traction roller 7 and the tension adjusting roller 6 on the bottom surface of the rolling and code spraying integrated platform 1 are cleaned, and the influence of impurities on the rolling of the degradable biodegradable film is avoided.
In the specific cleaning process, an inclined baffle plate 19 is arranged in the lower area of the traction roller 7 and the tension adjusting roller 6, and the baffle plate 19 is U-shaped. And cleaning the traction roller 7 and the tension adjusting roller 6 by using a spray header, and discharging sewage into a sewage collecting tank. When the traction roller 7 and the tension adjusting roller 6 are cleaned, sewage is blocked by the baffle 19 and recovered, and the phenomenon that the structure is damaged due to the pollution of the sewage on the first air cylinder 12, the moving plate 13 and the disc 10 is avoided.
e. And feeding the inner layer, the middle layer and the outer layer of the degradable biodegradable film respectively by a hopper.
f. And carrying out up-blowing film blowing through a three-layer co-extrusion film blowing machine 22 to obtain the degradable biodegradable film 23. Specifically, the master batch of the inner layer is added into an inner layer extruder of the three-layer co-extrusion film blowing machine 22, the master batch of the outer layer is added into an outer layer extruder of the three-layer co-extrusion film blowing machine 22, the master batch of the middle layer is added into a middle layer extruder of the three-layer co-extrusion film blowing machine 22, the extruding temperature of the extruders is controlled to be 160-170 ℃, and the low tensile strength of the film is avoided.
g. And (3) converting and rolling the degradable biodegradable film 23:
(1) adjusting the setting position of the dancer roller 6: the locking piece 4 on the fixing plate 2 is unscrewed, downward acting force is applied to the guide rod 3, the guide rod 3 vertically moves downwards in the through hole of the fixing plate 2, and when the tension adjusting roller 6 moves downwards to a set position below the traction roller 7, the locking piece 4 is screwed down, and the guide rod 3 is fixed on the fixing plate 2.
(2) The biodegradable film 23 is disposed on the cooling roll 16, and the cooling roll 16 performs a cooling action on the extruded biodegradable film 23. And winding the degradable biodegradable film 23 on a traction roller 7 and a tension adjusting roller 6, wherein the traction roller 7 is positioned below the degradable biodegradable film 23, and the tension adjusting roller 6 is positioned above the degradable biodegradable film 23. Then pack into first sleeve on first wind-up roll 20, rotate first wind-up roll 20 through first rotating device, first wind-up roll 20 pulls the rolling to degradable biodegradable plastic film 23, and degradable biodegradable plastic film 23 rolling is on first sleeve, and when degradable biodegradable plastic film 23 rolling on the first sleeve reached setting for length, stop three-layer coextrusion inflation film manufacturing machine 22 and first rotating device work, cut off degradable biodegradable plastic film 23 again, then take out first sleeve from first wind-up roll 20.
When the biodegradable film 23 on the first sleeve is rolled to a set length, the biodegradable film 23 is clamped by the clamping device, the clamping device comprises an upper clamping roller 17 and a lower clamping roller 18 which are distributed up and down, the upper clamping roller 17 is connected with the second cylinder 21, the upper clamping roller 17 above the lower clamping roller moves downwards by the downward driving action of the second cylinder 21, the degradable biodegradable film 23 is clamped by the upper clamping roller 17 and the lower clamping roller 18, and then the degradable biodegradable film 23 is cut off. When adopting cutting device to cut off degradable biodegradable plastic film 23, the slip phenomenon can appear in degradable biodegradable plastic film 23, leads to degradable biodegradable plastic film 23's section not to flush, consequently when cutting off degradable biodegradable plastic film 23, sets up pinch roll 17 and lower pinch roll 18 and carry out clamping effect to degradable biodegradable plastic film 23, avoids degradable biodegradable plastic film 23 to appear the slip phenomenon for degradable biodegradable plastic film 23's section flushes.
h. And (3) converting and spraying the degradable biodegradable film 23:
(1) the first air cylinder 12 is controlled to return to the initial position, the moving plate 13 moves on the guide rail 14, the moving plate 13 drives the disc 10 to rotate clockwise, and the rotating shaft 9 at the bottom of the conversion table 27 rotates clockwise, so that the conversion table 27 rotates 90 degrees clockwise.
(2) Rotate motor 8 in reverse, motor 8 drives the rolling and spouts an integrative platform of sign indicating number 1 anticlockwise rotation 90 for the rolling spouts an integrative platform of sign indicating number 1 and keeps the horizontality.
(3) The first sleeve which is wound with the biodegradable film 23 is arranged on the unwinding device 24, the biodegradable film 23 on the first sleeve is pulled out and attached to the top surface of the winding and code spraying integrated platform 1, then the second sleeve is arranged on the second winding roller 25, the second winding roller 25 is rotated through the second rotating device, the second sleeve pulls and winds the biodegradable film 23, the first sleeve on the unwinding device 24 unwinds the biodegradable film, the code spraying head 26 is moved through the moving device, the moving device can adopt an air cylinder, the code spraying head 26 can spray the code on the degradable biodegradable film 23 above the winding and code spraying integrated platform 1, and after the second sleeve is wound, the second sleeve is taken out from the second winding roller 25, so that the code spraying on the degradable biodegradable film 23 after being wound can be obtained.
According to the invention, through the state conversion of the conversion device, the degradable biodegradable film 23 in the rolling state and the degradable biodegradable film 23 in the code spraying state are in a cross design, so that the preparation production line of the degradable biodegradable film 23 is shortened, the occupied area is saved, the tension adjustment of the degradable biodegradable film 23 in the rolling work and the tension control of the degradable biodegradable film 23 in the code spraying work are both in the central point position of the cross design, the tension adjustment conversion of the degradable biodegradable film 23 is facilitated, the rolled degradable biodegradable film 23 can be ensured to be flat, the edge folding phenomenon can be avoided, the degradable biodegradable film 23 can be ensured to be spread in a whole width when the code spraying is carried out on the unreeled degradable biodegradable film 23, the code spraying is uniform, and the manufacturing quality of the degradable biodegradable film 23 is obviously improved.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (5)
1. The degradable biodegradable film comprises an inner layer, a middle layer and an outer layer, wherein the middle layer is arranged between the inner layer and the outer layer,
the inner layer comprises the following components in percentage by weight: PBAT 20% -100%, PLA 0% -35%, starch 0% -30%, inorganic powder 0% -30%, biodegradable material 0% -50%, and modifying auxiliary agent 0% -15%;
the middle layer comprises the following components in percentage by weight: PVA 30-75%, PLA 0-60%, PBAT 0-60%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 10-40%;
the outer layer comprises the following components in percentage by weight: PBAT 20-100%, PLA 0-35%, starch 0-30%, inorganic powder 0-30%, biodegradable material 0-50%, and modifying assistant 0-15%.
2. The method for preparing the degradable biodegradable film according to claim 1, comprising the steps of:
a. adjusting a tension adjusting roller arranged on the bottom surface of the rolling and code spraying integrated platform to an initial position: firstly, loosening a locking part on a fixing plate arranged on the bottom surface of the rolling and code-spraying integrated platform, applying upward acting force to a guide rod, enabling the guide rod to vertically move upwards in a through hole of the fixing plate, screwing the locking part when a tension adjusting seat is in contact with the fixing plate, fixing the guide rod on the fixing plate, and adjusting a tension adjusting roller on the tension adjusting seat to an initial position;
b. adjusting the first cylinder to an initial position, and then adjusting the motor to the initial position;
c. the state of the switching device is switched:
(1) the first cylinder is started, the first cylinder pushes the moving plate, the moving plate moves on the guide rail, and due to the fact that the first tooth portion is arranged on the moving plate, the rotating shaft at the bottom of the conversion table is provided with the disc which is provided with the second tooth portion, the second tooth portion and the first tooth portion are meshed with each other, the moving plate drives the disc to rotate anticlockwise, the rotating shaft at the bottom of the conversion table rotates anticlockwise at the moment, and the conversion table rotates anticlockwise for 90 degrees by controlling the pushing distance of the first cylinder;
(2) starting a motor, so that the motor drives the rolling and code spraying integrated platform to rotate 90 degrees clockwise, and the rolling and code spraying integrated platform is kept in a vertical state;
d. cleaning a traction roller and a tension adjusting roller on the bottom surface of the winding and code spraying integrated platform;
e. feeding by a hopper;
f. carrying out up-blowing film blowing through a three-layer co-extrusion film blowing machine to obtain a degradable biodegradable film;
g. and (3) converting and rolling the degradable biodegradable film:
(1) adjusting the setting position of the tension adjusting roller: loosening the locking part on the fixing plate, applying downward acting force to the guide rod, enabling the guide rod to vertically move downwards in the through hole of the fixing plate, and screwing the locking part to fix the guide rod on the fixing plate when the tension adjusting roller moves downwards to a set position below the traction roller;
(2) arranging a degradable biodegradable film on a cooling roller, winding the degradable biodegradable film on a traction roller and a tension adjusting roller, then loading a first sleeve on a first winding roller, rotating the first winding roller through a first rotating device, drawing and winding the degradable biodegradable film by the first winding roller, winding the degradable biodegradable film on the first sleeve, stopping the three-layer co-extrusion film blowing machine and the first rotating device when the degradable biodegradable film on the first sleeve is wound to a set length, cutting off the degradable biodegradable film, and then taking the first sleeve out of the first winding roller;
h. and (3) converting and spraying the degradable biodegradable film:
(1) controlling the first air cylinder to return to an initial position, moving the moving plate on the guide rail, driving the disc to rotate clockwise by the moving plate, and rotating the rotating shaft at the bottom of the conversion table clockwise to enable the conversion table to rotate 90 degrees clockwise;
(2) the motor is rotated reversely, and the motor drives the rolling and code spraying integrated platform to rotate 90 degrees anticlockwise, so that the rolling and code spraying integrated platform is kept in a horizontal state;
(3) the first sleeve which is wound with the biodegradable film is arranged on the unwinding device, the biodegradable film on the first sleeve is pulled out and attached to the top surface of the winding and code spraying integrated platform, then the second sleeve is arranged on the second winding roller, the second winding roller is rotated through the second rotating device, the second sleeve pulls the degradable biodegradable film to be wound, the first sleeve on the unwinding device unwinds the degradable biodegradable film, the code spraying head is moved through the moving device, the code spraying work is carried out on the degradable biodegradable film above the winding and code spraying integrated platform through the code spraying head, and after the second sleeve is wound, the second sleeve is taken out from the second winding roller.
3. The method for preparing a biodegradable film according to claim 1, wherein: in the step d, inclined baffles are arranged in the lower areas of the traction roller and the tension adjusting roller, then the traction roller and the tension adjusting roller are cleaned by the spray head, and sewage is discharged into a sewage collecting tank.
4. The method for preparing a biodegradable film according to claim 1, wherein: in the step f, the extrusion temperature of the extruder is controlled to be 160-170 ℃.
5. The method for preparing a biodegradable film according to claim 1, wherein: in step g, when the biodegradable film on the first sleeve is rolled to a set length, the biodegradable film is clamped by the clamping device, the clamping device comprises an upper clamping roller and a lower clamping roller which are distributed vertically, the upper clamping roller is connected with the second cylinder, the upper clamping roller above the upper clamping roller moves downwards under the action of downward driving of the second cylinder, the upper clamping roller and the lower clamping roller clamp the biodegradable film tightly, and then the biodegradable film is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010034614.7A CN111231466B (en) | 2020-01-14 | 2020-01-14 | Degradable biodegradable film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010034614.7A CN111231466B (en) | 2020-01-14 | 2020-01-14 | Degradable biodegradable film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111231466A true CN111231466A (en) | 2020-06-05 |
| CN111231466B CN111231466B (en) | 2022-01-18 |
Family
ID=70876151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010034614.7A Active CN111231466B (en) | 2020-01-14 | 2020-01-14 | Degradable biodegradable film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111231466B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116200012A (en) * | 2023-01-29 | 2023-06-02 | 安徽华驰环保科技有限公司 | Biodegradable plastic film production process and film blowing machine for production thereof |
| CN114589948B (en) * | 2022-03-11 | 2024-05-07 | 广州泽矩科技股份有限公司 | Preparation method of automobile film |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1096309A1 (en) * | 1999-10-14 | 2001-05-02 | Eastman Kodak Company | A photographic printing apparatus with a web transport assembly for plural media supplies/take-ups |
| JP2003171039A (en) * | 2001-12-04 | 2003-06-17 | Sii P & S Inc | Winding device and printer using the same |
| CN103043474A (en) * | 2013-01-13 | 2013-04-17 | 青岛佳禾滴灌设备有限公司 | Rolling-up machine |
| JP2014148054A (en) * | 2013-01-31 | 2014-08-21 | Sato Holdings Corp | Printer |
| CN204109572U (en) * | 2014-09-28 | 2015-01-21 | 惠州亿纬锂能股份有限公司 | Full-automatic spray decoding apparatus |
| CN106276349A (en) * | 2016-08-11 | 2017-01-04 | 苏州柯创电子材料有限公司 | A kind of automatic code spraying device for packaging film |
| CN208531014U (en) * | 2018-07-13 | 2019-02-22 | 广州品赫化妆品有限公司 | A kind of labeling spray code spraying apparatus |
| CN110626038A (en) * | 2019-09-27 | 2019-12-31 | 广东崇熙环保科技有限公司 | Biodegradable film and method for producing same |
-
2020
- 2020-01-14 CN CN202010034614.7A patent/CN111231466B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1096309A1 (en) * | 1999-10-14 | 2001-05-02 | Eastman Kodak Company | A photographic printing apparatus with a web transport assembly for plural media supplies/take-ups |
| JP2003171039A (en) * | 2001-12-04 | 2003-06-17 | Sii P & S Inc | Winding device and printer using the same |
| CN103043474A (en) * | 2013-01-13 | 2013-04-17 | 青岛佳禾滴灌设备有限公司 | Rolling-up machine |
| JP2014148054A (en) * | 2013-01-31 | 2014-08-21 | Sato Holdings Corp | Printer |
| CN204109572U (en) * | 2014-09-28 | 2015-01-21 | 惠州亿纬锂能股份有限公司 | Full-automatic spray decoding apparatus |
| CN106276349A (en) * | 2016-08-11 | 2017-01-04 | 苏州柯创电子材料有限公司 | A kind of automatic code spraying device for packaging film |
| CN208531014U (en) * | 2018-07-13 | 2019-02-22 | 广州品赫化妆品有限公司 | A kind of labeling spray code spraying apparatus |
| CN110626038A (en) * | 2019-09-27 | 2019-12-31 | 广东崇熙环保科技有限公司 | Biodegradable film and method for producing same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589948B (en) * | 2022-03-11 | 2024-05-07 | 广州泽矩科技股份有限公司 | Preparation method of automobile film |
| CN116200012A (en) * | 2023-01-29 | 2023-06-02 | 安徽华驰环保科技有限公司 | Biodegradable plastic film production process and film blowing machine for production thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111231466B (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111231466B (en) | Degradable biodegradable film and preparation method thereof | |
| CN112193889A (en) | Winding device and method for improving appearance of cast film | |
| CN109454809A (en) | Printer device and method in a kind of IMT mould | |
| CN206983453U (en) | Double-colored polymer membranes production line | |
| CN210522957U (en) | Plastomer modified asphalt waterproofing membrane is with child base coating device | |
| CN111331828A (en) | Film blow molding machine | |
| CN207192368U (en) | A kind of extrusion molding substrate transfer device | |
| CN207140393U (en) | One kind one goes out the two laminating draining board assembly lines of heat | |
| CN110774412A (en) | Gypsum board bag placing system and method | |
| CN101104344A (en) | Signet material and producing method thereof | |
| CA3149317A1 (en) | Multi-layered composition based on foamed recycled polyethylene terephthalate and method for producing same | |
| CN212041150U (en) | Automatic coating device capable of achieving uniform coating | |
| CN1277105A (en) | Hot composition process of woven color printed plastic bag | |
| CN114789529A (en) | Plastic products production forming device based on big data | |
| CN215790991U (en) | Open mill | |
| CN101716819B (en) | Method for producing roughened surface geomembrane | |
| CN207140545U (en) | A kind of printing machine with cross cutting function | |
| CN219727173U (en) | Water stop plate setting machine | |
| CN1336279A (en) | Composite nacreous paper label and its making process and equipment | |
| CN218701240U (en) | Auxiliary support for film blowing machine | |
| CN107310122A (en) | Buffering combination board is prepared using air pressure support one-shot forming | |
| CN215940424U (en) | Double-sided spraying device for dry-process pulp molding production | |
| CN218640358U (en) | Laminating device for producing photo-cured prepreg sheets | |
| CN220697300U (en) | Coating machine die head flow regulating mechanism | |
| CN219213330U (en) | Automatic film tearing cutting machine for SMC (sheet molding compound) sheets |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |