CN114536633B - Moldable thermal composite polypropylene film and preparation process and device thereof - Google Patents
Moldable thermal composite polypropylene film and preparation process and device thereof Download PDFInfo
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- CN114536633B CN114536633B CN202210156687.2A CN202210156687A CN114536633B CN 114536633 B CN114536633 B CN 114536633B CN 202210156687 A CN202210156687 A CN 202210156687A CN 114536633 B CN114536633 B CN 114536633B
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- polypropylene film
- thermal composite
- composite polypropylene
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- -1 polypropylene Polymers 0.000 title claims abstract description 71
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 70
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 70
- 239000002131 composite material Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010410 layer Substances 0.000 claims abstract description 80
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 239000003063 flame retardant Substances 0.000 claims abstract description 20
- 238000007639 printing Methods 0.000 claims abstract description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000012792 core layer Substances 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 239000011888 foil Substances 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 238000009966 trimming Methods 0.000 claims abstract description 5
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 4
- 239000011241 protective layer Substances 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000007723 die pressing method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000010425 asbestos Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 235000013305 food Nutrition 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 3
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/20—Making multilayered or multicoloured articles
- B29C43/203—Making multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
- B26D1/03—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member with a plurality of cutting members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/03—After-treatments in the joint area
- B29C66/032—Mechanical after-treatments
- B29C66/0326—Cutting, e.g. by using waterjets, or perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/45—Joining of substantially the whole surface of the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
- B29C66/7422—Aluminium or alloys of aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/008—Wide strips, e.g. films, webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a metal layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a moldable thermal composite polypropylene film which comprises an isolation layer, a core layer, a heat sealing layer, a flame retardant layer, a protective layer and a printing layer, wherein the core layer is arranged on the isolation layer. According to the invention, the flame-retardant layer and the aluminum foil layer are added, so that the polypropylene film can be prevented from being melted at high temperature when being heated outside, meanwhile, the internal food can be heated, and meanwhile, the trimming burr width can be adjusted by additionally arranging the preparation device of the moldable thermal composite polypropylene film; through rotating the knob, the knob drives the double-threaded rod to rotate in the sliding groove, and then the first thread and the second thread which are opposite in surface direction of the double-threaded rod drive the two sliding blocks to move in opposite directions, so that the sliding blocks drive the two cutting assemblies at the top to move in opposite directions, the distance between the two cutters is changed, and the distance between the cutters is suitable for the operation of cutting burrs of the polypropylene film with more specifications.
Description
Technical Field
The invention relates to the technical field of polypropylene film production, in particular to a moldable thermal composite polypropylene film, a preparation process and a preparation device thereof.
Background
Biaxially oriented polypropylene (BOPP) films are generally multilayer co-extruded films, which are produced by co-extruding polypropylene particles to form sheets and stretching the sheets in both the longitudinal and transverse directions. Because of the orientation of the stretching molecules, the film has better physical stability, mechanical strength and air tightness, higher transparency and glossiness, toughness and wear resistance, is a printing film with wide application, generally has the thickness of 20-40 mu and the most widely applied thickness of 20 mu m. The biaxially oriented polypropylene film has the main defect of poor heat sealing property, so the biaxially oriented polypropylene film is generally used as an outer film of a composite film, such as a film with ideal moisture resistance, transparency, strength, stiffness and printability after being compounded with a polyethylene film, and is suitable for containing dry foods.
In order to meet different use requirements, the polypropylene film is required to be compounded generally so as to meet the use requirements, however, the traditional polypropylene film cannot heat food inside the polypropylene film through the outer side of the polypropylene film, burrs are formed in the production process, a cutting device for cutting the burrs cannot be flexibly adjusted, the polypropylene film with different specifications is required to be detached and then installed, time and labor are wasted, and therefore, the moldable thermal composite polypropylene film, the preparation process and the preparation device are provided.
Disclosure of Invention
The invention aims at the defects and provides a moldable thermal composite polypropylene film, a preparation process and a preparation device, wherein the flame-retardant layer and the aluminum foil layer are added to prevent the polypropylene film from being melted at high temperature, meanwhile, the internal food can be heated, and the width of the cut burrs can be adjusted by adding the device for the preparation process of the moldable thermal composite polypropylene film, so that the problems are solved.
The technical scheme of the invention is realized as follows:
a moldable thermal composite polypropylene film comprising: isolation layer, sandwich layer, heat seal layer, fire-retardant layer, inoxidizing coating and printing layer, the sandwich layer is established on the isolation layer, the heat seal layer is established on the sandwich layer, fire-retardant layer is established on the heat seal layer, the inoxidizing coating is established on fire-retardant layer, the printing layer is established on the inoxidizing coating.
Preferably, the core layer is prepared from polypropylene and glass fibers according to the weight parts of 60:1, preparing the composite material by a coextrusion biaxial stretching process.
Preferably, the isolating layer is an aluminum foil layer, the flame-retardant layer is an asbestos screen layer, the protecting layer is a nylon layer, and the printing layer is a PE layer.
A process for preparing the thermally-compounded polypropylene film by die pressing includes such steps as,
s1: sequentially stacking the core layer, the heat sealing layer, the flame retardant layer, the protective layer and the printing layer to obtain a film stack body;
s2: the stacked film stack body is molded through a laser molding press to obtain a composite film A;
s3: attaching an aluminum foil on a core layer of the composite film, bonding by using an adhesive, and performing die pressing after bonding to obtain a die-pressing thermal composite polypropylene film;
s4: trimming the moldable thermal composite polypropylene film through a device of a preparation process of the moldable thermal composite polypropylene film, driving a double-threaded rod to rotate by rotating a knob when the moldable thermal composite polypropylene film passes through the device, driving two sliding blocks to move relatively by threads with opposite surface directions, driving a cutting assembly to move by the sliding blocks, adjusting the distance between two cutters on the cutting assembly to a distance of a required specification, enabling the moldable thermal composite polypropylene film to pass through the bottom of a pressing block, cutting burrs on two sides when the moldable thermal composite polypropylene film passes through the bottom of the pressing block, enabling the two burrs to pass through the top of a second support column and then be fixed on the second winding roller, enabling the moldable thermal composite polypropylene film in the middle to pass through the bottom of the second support column and then be fixed on the first winding roller;
the motor is started, the output shaft of the motor drives the second rotating shaft to rotate, the second rotating shaft drives the second winding roller to rotate in the rotating process, burrs can be wound, one end of the second rotating shaft drives the second belt pulley to rotate, the second belt pulley drives the first belt pulley to rotate through the belt, the first belt pulley drives the first winding roller to rotate through the rotating shaft, and the burrs and the moldable thermal composite polypropylene film can be wound together.
Preferably, the rotation speed of the motor in the step S4 is 120r/min.
The preparation device of the moldable thermal composite polypropylene film comprises a base, wherein a rolling component, a leveling component and an adjusting component are arranged on the base, the leveling component is positioned between the rolling component and the adjusting component, and two cutting components are arranged on the adjusting component;
the winding assembly comprises a first support column and a motor, wherein the motor is fixedly arranged on the first support column, the number of the first support columns is two, the first support columns are symmetrically arranged, the top between the first support columns is rotationally connected with a first rotating shaft, one end of the first rotating shaft penetrates through the first support columns and is rotationally connected with a first belt pulley, the bottom between the first support columns is rotationally connected with a second rotating shaft, one end of the second rotating shaft penetrates through the first support columns and is rotationally connected with a second belt pulley, the second belt pulley is in transmission connection with the first belt pulley through a belt, and the other end of the second rotating shaft penetrates through the first support columns and is fixedly connected with an output shaft of the motor;
the leveling assembly comprises two leveling rollers, the two leveling rollers are symmetrically arranged on two sides of the base, a rotating shaft is rotatably connected between the two leveling rollers, and a second supporting column is sleeved on the surface of the rotating shaft;
the adjusting component comprises a fixed seat, the fixed seat is arranged on the base, a sliding seat is arranged on the fixed seat, a sliding groove is formed in the sliding seat, two sliding blocks are connected in a sliding manner in the sliding groove, a thread groove is formed in the middle shaft of each sliding block, a double-threaded rod is connected in the sliding groove in a rotating manner, and one end of each double-threaded rod extends out of the sliding seat;
the cutting assembly comprises a flat plate, the flat plate is arranged on a sliding block, a slot is formed in the flat plate, a supporting frame is arranged on the flat plate, a connecting block is arranged at the bottom of the supporting frame, two pressing blocks are arranged on the connecting block, a cutter seat is arranged between the two pressing blocks, a stud is arranged on the cutter seat, a rotating sleeve is sleeved on the stud, a cutter is arranged on the rotating sleeve, a nut is connected to the stud in a threaded mode, and the nut is located on one side, back to the cutter seat, of the rotating sleeve.
Preferably, the double-threaded rod is provided with a first thread and a second thread with opposite directions, the two sliding blocks are sleeved on two sides of the surface of the double-threaded rod, and the two thread grooves are respectively meshed with the first thread and the second thread.
Preferably, the two sides of the sliding block are provided with limit strips, the two sides of the sliding groove are provided with limit grooves, the limit strips are positioned in the limit grooves, and the limit strips are in sliding connection with the limit grooves.
Preferably, the distance between the pressing block and the flat plate is equal to the thickness of the moldable thermal composite polypropylene film.
Preferably, the bottom end of the cutter extends into the slot.
Compared with the prior art, the invention has the advantages and positive effects that:
1. according to the invention, the flame-retardant layer and the aluminum foil layer are added, so that the polypropylene film can be prevented from being melted at high temperature when being heated outside, meanwhile, the internal food can be heated, and meanwhile, the trimming burr width can be adjusted by adding a device capable of molding a preparation process of the thermal composite polypropylene film;
2. through rotating the knob, the knob drives the double-threaded rod to rotate in the sliding groove, and then the first thread and the second thread which are opposite in surface direction of the double-threaded rod drive the two sliding blocks to move in opposite directions, so that the sliding blocks drive the two cutting assemblies at the top to move in opposite directions, the distance between the two cutters is changed, and the distance between the cutters is suitable for the operation of cutting burrs of the polypropylene film with more specifications.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of an apparatus for a process for preparing a moldable thermal composite polypropylene film in accordance with embodiments of the present invention;
FIG. 2 is a schematic structural view of another view of an apparatus for the process of preparing a moldable thermal composite polypropylene film in accordance with embodiments of the present invention;
FIG. 3 is a schematic view of the structure of a winding assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the connection of the adjustment seat and the slider according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional structure of a connection structure of an adjusting seat and a slider according to an embodiment of the present invention;
FIG. 6 is an enlarged view of a partial structure of A in FIG. 5 according to an embodiment of the present invention;
FIG. 7 is a schematic view of a slider according to an embodiment of the present invention;
FIG. 8 is a schematic illustration of a configuration of a cutting assembly according to an embodiment of the present invention;
FIG. 9 is a schematic view of another view of a cutting assembly according to an embodiment of the present invention;
fig. 10 is a schematic view showing a connection structure of a cutter and a cutter seat according to an embodiment of the present invention.
In the figure: 1. a base; 2. a winding assembly; 3. leveling the assembly; 4. an adjustment assembly; 5. a cutting assembly; 21. a first support column; 22. a first rotating shaft; 23. a second rotating shaft; 24. a first winding roller; 25. a second winding roller; 26. a motor; 27. a first belt pulley; 28. a belt; 29. a belt pulley II; 31. leveling rollers; 32. a rotation shaft; 33. a second support column; 41. a fixing seat; 42. a sliding seat; 43. a double threaded rod; 44. a knob; 45. a sliding block; 46. a limit groove; 47. a sliding groove; 48. a limit bar; 49. a thread groove; 51. a flat plate; 52. briquetting; 53. a support frame; 54. connecting blocks; 55. slotting; 56. a cutter holder; 57. a rotating sleeve; 58. a cutter; 59. a nut; 510. a stud.
Detailed Description
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
The invention will be further described with reference to the drawings and the specific examples.
Example 1
According to an embodiment of the invention, a moldable thermal composite polypropylene film comprises: isolation layer, sandwich layer, heat seal layer, fire-retardant layer, inoxidizing coating and printing layer, the sandwich layer is established on the isolation layer, and the heat seal layer is established on the sandwich layer, and fire-retardant layer is established on the heat seal layer, and the inoxidizing coating is established on the fire-retardant layer, and the printing layer is established on the inoxidizing coating.
Specifically, the core layer is prepared from polypropylene and glass fiber according to the weight portions of 60:1, preparing the composite material by a coextrusion biaxial stretching process.
Specifically, the isolation layer is an aluminum foil layer, the flame-retardant layer is an asbestos screen layer, the protection layer is a nylon layer, and the printing layer is a PE layer.
The invention also provides a preparation process of the moldable thermal composite polypropylene film, which comprises the following steps of,
s1: sequentially stacking the core layer, the heat sealing layer, the flame retardant layer, the protective layer and the printing layer to obtain a film stack body;
s2: the stacked film stack body is molded through a laser molding press to obtain a composite film A;
s3: attaching an aluminum foil on a core layer of the composite film, bonding by using an adhesive, and performing die pressing after bonding to obtain a die-pressing thermal composite polypropylene film;
s4: trimming the moldable thermal composite polypropylene film through a device of a preparation process of the moldable thermal composite polypropylene film, driving a double-threaded rod 43 to rotate by rotating a knob 44 through the knob 44 when the moldable thermal composite polypropylene film passes through the device, driving two sliding blocks 45 to move relatively through threads with opposite surface directions by the double-threaded rod 43, driving a cutting assembly 5 to move by the sliding blocks 45, adjusting the distance between two cutters 58 on the cutting assembly 5 to a required specification, enabling the moldable thermal composite polypropylene film to pass through the bottom of a pressing block 52, cutting burrs on two sides when the moldable thermal composite polypropylene film passes through, enabling the two burrs to pass through the top of a second support column 33 and then be fixed on a second winding roller 25, enabling the moldable thermal composite polypropylene film in the middle to pass through the bottom of the second support column 33 and then be fixed on a first winding roller 24;
the motor 26 is started, the output shaft of the motor 26 drives the second rotating shaft 23 to rotate, the second winding roller 25 is driven to rotate in the rotating process of the second rotating shaft 23, burrs can be wound, one end of the second rotating shaft 23 drives the second belt pulley 29 to rotate, the second belt pulley 29 drives the first belt pulley 27 to rotate through the belt 28, the first belt pulley 27 drives the first winding roller 24 to rotate through the first rotating shaft 22, and the burrs and the moldable thermal composite polypropylene film can be wound together.
Specifically, the rotational speed of the motor 26 in S4 is 120r/min.
The invention also provides a preparation device of the moldable thermal composite polypropylene film, which comprises a base 1, wherein the base 1 is provided with a rolling component 2, a leveling component 3 and an adjusting component 4, the leveling component 3 is positioned between the rolling component 2 and the adjusting component 4, and the adjusting component 4 is provided with two cutting components 5;
the winding assembly 2 comprises a first support column 21 and a motor 26, the motor 26 is fixedly arranged on the first support column 21, the number of the first support columns 21 is two, the first support columns 21 are symmetrically arranged, a first rotating shaft 22 is rotatably connected to the top between the first support columns 21, one end of the first rotating shaft 22 penetrates through the first support column 21 and is rotatably connected with a first belt pulley 27, the bottom between the first support columns 21 is rotatably connected with a second rotating shaft 23, one end of the second rotating shaft 23 penetrates through the first support column 21 and is rotatably connected with a second belt pulley 29, the second belt pulley 29 and the first belt pulley 27 are in transmission connection through a belt 28, and the other end of the second rotating shaft 23 penetrates through the first support column 21 and is fixedly connected with an output shaft of the motor 26;
the leveling assembly 3 comprises two leveling rollers 31, the two leveling rollers 31 are symmetrically arranged on two sides of the base 1, a rotating shaft 32 is rotatably connected between the two leveling rollers 31, and a second supporting column 33 is sleeved on the surface of the rotating shaft 32;
the adjusting component 4 comprises a fixed seat 41, the fixed seat 41 is arranged on the base 1, a sliding seat 42 is arranged on the fixed seat 41, a sliding groove 47 is formed in the sliding seat 42, two sliding blocks 45 are connected in a sliding manner in the sliding groove 47, a thread groove 49 is formed in the middle shaft of the sliding block 45, a double-threaded rod 43 is connected in the sliding groove 47 in a rotating manner, and one end of the double-threaded rod 43 extends out of the sliding seat 42;
the cutting assembly 5 comprises a flat plate 51, the flat plate 51 is arranged on a sliding block 45, a groove 55 is formed in the flat plate 51, a supporting frame 53 is arranged on the flat plate 51, a connecting block 54 is arranged at the bottom of the supporting frame 53, two pressing blocks 52 are arranged on the connecting block 54, a cutter seat 56 is arranged on the connecting block 54, the cutter seat 56 is arranged between the two pressing blocks 52, a stud 510 is arranged on the cutter seat 56, a rotating sleeve 57 is sleeved on the stud 510, a cutter 58 is arranged on the rotating sleeve 57, a nut 59 is connected to the stud 510 in a threaded manner, and the nut 59 is arranged on one side of the rotating sleeve 57, which is opposite to the cutter seat 56.
Specifically, the double-threaded rod 43 is provided with a first thread and a second thread with opposite directions, the two sliding blocks 45 are sleeved on two sides of the surface of the double-threaded rod 43, and the two thread grooves 49 are respectively meshed with the first thread and the second thread.
Example 2
As shown in fig. 5, the difference between the present embodiment and embodiment 1 is that the two sides of the sliding block 45 are provided with the limit strips 48, the two sides of the sliding groove 47 are provided with the limit grooves 46, the limit strips 48 are located in the limit grooves 46, and the limit strips 48 are slidably connected with the limit grooves 46.
By adopting the above technical scheme, the stability of the sliding block 45 during sliding can be improved, and the situation that the sliding block 45 deviates is avoided.
Example 3
As shown in fig. 8, this embodiment is different from embodiment 2 in that the distance between the pressing block 52 and the flat plate 51 is equal to the thickness of the moldable heat-compounded polypropylene film.
By adopting the above technical scheme, the pressing block 52 can be pressed on the polypropylene film, and the stability of the polypropylene film is improved.
Example 4
As shown in fig. 9, this embodiment is different from embodiment 3 in that the bottom end of the cutter 58 protrudes into the slot 55.
Through adopting above-mentioned technical scheme, stability when can increasing the excision deckle edge.
Working principle: by rotating the knob 44, the knob 44 drives the double-threaded rod 43 to rotate in the sliding groove 47, and then the first thread and the second thread which are opposite in surface direction of the double-threaded rod 43 drive the two sliding blocks 45 to move in opposite directions, so that the sliding blocks 45 drive the two cutting assemblies 5 at the top to move in opposite directions, the distance between the two cutters 58 is changed, and the distance between the cutters 58 is suitable for the operation of cutting burrs of polypropylene films with more specifications.
The present invention can be easily implemented by those skilled in the art through the above specific embodiments. It should be understood that the invention is not limited to the particular embodiments described above. Based on the disclosed embodiments, a person skilled in the art may combine different technical features at will, so as to implement different technical solutions.
Claims (6)
1. A process for preparing a moldable thermal composite polypropylene film, the moldable thermal composite polypropylene film comprising: isolation layer, sandwich layer, heat seal layer, fire-retardant layer, inoxidizing coating and printing layer, the sandwich layer is established on the isolation layer, the heat seal layer is established on the sandwich layer, fire-retardant layer is established on the heat seal layer, the inoxidizing coating is established on fire-retardant layer, the printing layer is established on the inoxidizing coating, the sandwich layer is by polypropylene and glass fiber according to parts by weight 60: the flame-retardant coating is prepared by a coextrusion biaxial stretching process, wherein the isolating layer is an aluminum foil layer, the flame-retardant layer is an asbestos net layer, the protecting layer is a nylon layer, and the printing layer is a PE layer;
the preparation process is realized by a preparation device of the moldable thermal composite polypropylene film, and is characterized in that:
the preparation device comprises a base (1), wherein a rolling component (2), a leveling component (3) and an adjusting component (4) are arranged on the base (1), the leveling component (3) is positioned between the rolling component (2) and the adjusting component (4), and two cutting components (5) are arranged on the adjusting component (4);
the winding assembly (2) comprises a first support column (21) and a motor (26), wherein the motor (26) is fixedly arranged on the first support column (21), the number of the first support columns (21) is two, the two first support columns (21) are symmetrically arranged, a first rotating shaft (22) is rotationally connected to the top between the first support columns (21), one end of the first rotating shaft (22) penetrates through the first support columns (21) and is rotationally connected with a first belt pulley (27), the bottom between the two first support columns (21) is rotationally connected with a second rotating shaft (23), one end of the second rotating shaft (23) penetrates through the first support columns (21) and is rotationally connected with a second belt pulley (29), the second belt pulley (29) is in transmission connection with the first belt pulley (27) through a belt (28), and the other end of the second rotating shaft (23) penetrates through the first support columns (21) and is fixedly connected with an output shaft of the motor (26).
The leveling assembly (3) comprises two leveling rollers (31), wherein the number of the leveling rollers (31) is two, the two leveling rollers (31) are symmetrically arranged on two sides of the base (1), a rotating shaft (32) is rotationally connected between the two leveling rollers (31), and a second supporting column (33) is sleeved on the surface of the rotating shaft (32);
the adjusting component (4) comprises a fixed seat (41), the fixed seat (41) is arranged on the base (1), a sliding seat (42) is arranged on the fixed seat (41), a sliding groove (47) is formed in the sliding seat (42), two sliding blocks (45) are connected in a sliding manner in the sliding groove (47), a thread groove (49) is formed in the middle shaft of each sliding block (45), a double-threaded rod (43) is connected in the sliding groove (47) in a rotating manner, and one end of each double-threaded rod (43) extends out of the sliding seat (42);
the cutting assembly (5) comprises a flat plate (51), the flat plate (51) is arranged on a sliding block (45), a slot (55) is formed in the flat plate (51), a supporting frame (53) is arranged on the flat plate (51), a connecting block (54) is arranged at the bottom of the supporting frame (53), two pressing blocks (52) are arranged on the connecting block (54), a cutter seat (56) is arranged on the connecting block (54), the cutter seat (56) is arranged between the two pressing blocks (52), a stud (510) is arranged on the cutter seat (56), a rotating sleeve (57) is sleeved on the stud (510), a cutter (58) is arranged on the rotating sleeve (57), a nut (59) is connected to the stud (510) in a threaded mode, and the nut (59) is arranged on one side, opposite to the cutter seat (56), of the rotating sleeve (57).
The preparation process comprises the following steps of,
s1: sequentially stacking the core layer, the heat sealing layer, the flame retardant layer, the protective layer and the printing layer to obtain a film stack body;
s2: the stacked film stack body is molded through a laser molding press to obtain a composite film A;
s3: attaching an aluminum foil on a core layer of the composite film, bonding by using an adhesive, and performing die pressing after bonding to obtain a die-pressing thermal composite polypropylene film;
s4: trimming the moldable thermal composite polypropylene film through a preparation device of a preparation process of the moldable thermal composite polypropylene film, when the moldable thermal composite polypropylene film passes through the preparation device, driving a double threaded rod (43) to rotate by rotating a knob (44), driving two sliding blocks (45) to do relative motion by threads with opposite surface directions by the double threaded rod (44), driving a cutting assembly (5) to move by the sliding blocks (45), adjusting the distance between two cutters (58) on the cutting assembly (5) to a required specification, enabling the moldable thermal composite polypropylene film to pass through the bottom of a pressing block (52), cutting burrs on two sides when the moldable thermal composite polypropylene film passes through, enabling the two burrs on two sides to pass through the top of a support post II (33) and then be fixed on two winding rollers II (25), enabling the moldable thermal composite polypropylene film in the middle to pass through the bottom of the support post II (33) and then be fixed on a winding roller I (24);
starting the motor (26), the output shaft of the motor (26) drives the second rotating shaft (23) to rotate, the second rotating shaft (23) drives the second winding roller (25) to rotate in the rotating process, burrs can be wound, one end of the second rotating shaft (23) drives the second belt pulley (29) to rotate, the second belt pulley (29) drives the first belt pulley (27) to rotate through the belt (28), and the first belt pulley (27) drives the first winding roller (24) to rotate through the first rotating shaft (22), so that burrs and the moldable thermal composite polypropylene film can be wound together.
2. The process for preparing a moldable thermal composite polypropylene film according to claim 1, wherein the rotational speed of the motor (26) in S4 is 120r/min.
3. The process for preparing the moldable thermal composite polypropylene film according to claim 1, wherein the double-threaded rod (43) is provided with two threads I and two threads II which are opposite in direction, the two sliding blocks (45) are sleeved on two sides of the surface of the double-threaded rod (43), and the two thread grooves (49) are meshed with the threads I and the threads II respectively.
4. The process for preparing the moldable thermal composite polypropylene film according to claim 1, wherein limit strips (48) are arranged on two sides of the sliding block (45), limit grooves (46) are formed on two sides of the sliding groove (47), the limit strips (48) are located in the limit grooves (46), and the limit strips (48) are in sliding connection with the limit grooves (46).
5. The process for preparing a moldable thermal composite polypropylene film as claimed in claim 1, wherein the distance between the pressing block (52) and the flat plate (51) is equal to the thickness of the moldable thermal composite polypropylene film.
6. A process for preparing a moldable thermal composite polypropylene film according to claim 1, wherein the bottom end of said cutter (58) extends into the slit (55).
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| CN202210156687.2A CN114536633B (en) | 2022-02-21 | 2022-02-21 | Moldable thermal composite polypropylene film and preparation process and device thereof |
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| CN114536633B true CN114536633B (en) | 2024-03-26 |
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| CN114536633A (en) | 2022-05-27 |
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