CN114055883A - Environment-friendly PVC decorative film and preparation method thereof - Google Patents
Environment-friendly PVC decorative film and preparation method thereof Download PDFInfo
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- CN114055883A CN114055883A CN202111253016.XA CN202111253016A CN114055883A CN 114055883 A CN114055883 A CN 114055883A CN 202111253016 A CN202111253016 A CN 202111253016A CN 114055883 A CN114055883 A CN 114055883A
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- 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
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- 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
- B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
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- 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
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
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- 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
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
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- 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
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- B29L2007/002—Panels; Plates; Sheets
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
Abstract
The invention discloses an environment-friendly PVC decorative film in the technical field of PVC decorative films, which comprises a PVC base material and a printing layer covered on the surface of the PVC base material, wherein the surface of the printing layer is covered with a PVC film, the printing layer is a water-based ink layer, and the water-based ink layer comprises the following raw materials in parts by weight: 50 parts of water-based emulsified resin oil, 5 parts of a flatting agent, 3 parts of a silane coupling agent, 0.8 part of nano silicon dioxide, 1 part of a plasticizer, 5 parts of a heat stabilizer, 10 parts of a dye and the balance of a solvent. Through adding nanometer silica, improved the rigidity or the mechanical strength on PVC decorating film surface, through setting up hot pressing equipment to by the PVC substrate, the printing layer after the chill roll cools off hot pressing, improve printing layer solidification efficiency, scrape even subassembly through the setting, can scrape the printing layer surface evenly, avoid local fold phenomenon to produce, can carry out the tensioning respectively to PVC substrate, printing layer through setting up the tensioning subassembly, improve the quality after the hot pressing.
Description
Technical Field
The invention relates to the technical field of PVC decorative films, in particular to an environment-friendly PVC decorative film and a preparation method thereof.
Background
Along with the increasing demand of people for decorative home furnishing, the more decorative film used in the current decoration industry is the PVC decorative film, and the PVC decorative film has the advantages of light weight, heat insulation, heat preservation, moisture protection, good corrosion resistance effect, high stability, dielectricity, durability, strong ageing resistance, high bending strength and impact toughness, high extensibility in fracture, smooth surface, bright color, strong decoration property, wide decoration application range, simple construction, convenient installation and the like, so the PVC decorative film is more and more widely applied in the decorative home furnishing industry.
Through search, the chinese patent publication No. CN107234046A discloses a preparation method of a novel PVC decorative film, which comprises the following steps: and S1, uniformly spraying a first coating layer on the surface of the PVC decorative film by using a coating machine. And S2, uniformly spraying a second coating layer on the surface of the PVC decorative film by using a coating machine. A door plate containing the PVC decorative film comprises the following steps: and S1', milling the high-density fiberboard into a certain shape by using a numerical control milling cutter, and cutting the high-density fiberboard into required sizes. And S2', polishing the milled and cut high-density fiberboard smoothly by using a special-shaped sanding polisher. S3', the high-density fiberboard is sized with a coater. And S4', pressing the PVC decorative film on the high-density fiberboard by using a 3D film laminating machine. S5', the high-density fiberboard coated with the PVC decorative film is subjected to a sanding process so that the convex portion thereof can take on a color different from that of the surface.
The PVC decorative film in the prior art has lower surface rigidity or surface mechanical strength, and further has weaker compressive and tensile strength.
Based on the above, the invention designs an environment-friendly PVC decorative film and a preparation method thereof, so as to solve the problems.
Disclosure of Invention
The invention aims to provide an environment-friendly PVC decorative film and a preparation method thereof, and aims to solve the problems that the PVC decorative film in the prior art proposed in the background art is low in surface rigidity or surface mechanical strength and further weak in compression strength and tensile strength.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an environmental protection PVC decorating film, includes the PVC substrate and covers the printing layer on PVC substrate surface, it has the PVC membrane to print layer surface covering, the printing layer is waterborne printing ink layer, waterborne printing ink layer includes the following raw materials that count by weight fraction:
50 parts of water-based emulsified resin oil, 5 parts of a flatting agent, 3 parts of a silane coupling agent, 0.8 part of nano silicon dioxide, 1 part of a plasticizer, 5 parts of a heat stabilizer, 10 parts of a dye and the balance of a solvent.
In the environment-friendly PVC decorative film as described above, the solvent is deionized water.
The preparation method of the environment-friendly PVC decorative film comprises the following steps:
modifying the surface of the PVC base material by using a corona method;
covering and pressing the printing layer on the PVC base material through hot pressing equipment, and scraping the surface of the printing layer uniformly after covering and pressing;
and laminating the PVC film on the surface of the printing layer by laminating equipment.
In the preparation method of the environment-friendly PVC decorative film, the hot-pressing equipment comprises a mounting plate, two hot-pressing rollers and two cooling rollers, wherein two uncoiling shafts are arranged on the mounting plate and are respectively used for coiling the printing layer and the PVC base material, a tensioning assembly is arranged on the mounting plate, an even scraping assembly is arranged between the hot-pressing rollers and the cooling rollers, and the hot-pressing rollers are positioned between the mounting plate and the cooling rollers.
In the method for manufacturing an environment-friendly PVC decorative film, the tensioning assembly includes two hinge rods hinged to opposite sides of the mounting plate, the two hinge rods are hinged to the mounting plate at ends thereof away from the mounting plate, a tensioning wheel is rotatably connected to one end of the mounting rod, a first connecting sleeve is hinged to the other end of the two mounting rods, a second connecting sleeve coaxial with the first connecting sleeve is disposed on the mounting plate, a driving shaft is connected to the first connecting sleeve and the second connecting sleeve, threaded portions with opposite thread directions are disposed at two ends of the driving shaft in the length direction, and the two threaded portions are threaded through the first connecting sleeve and the second connecting sleeve respectively.
In the preparation method of the environment-friendly PVC decorative film, the tensioning assembly comprises two scraping plates which are arranged from top to bottom, the two scraping plates are sequentially defined as an upper scraping plate and a lower scraping plate from top to bottom, and the lower scraping plate is driven by the elastic driving unit to move towards the upper scraping plate in a natural state.
In the preparation method of the environment-friendly PVC decorative film, the elastic driving unit comprises a mounting seat, a sliding rod capable of freely sliding up and down vertically penetrates through the mounting seat, the upper end of the sliding rod is fixedly connected with the lower scraper, a floating ring is further sleeved at the upper end of the sliding rod, a fixing ring is fixedly connected onto the mounting seat, a reset spring is sleeved on the sliding rod, two ends of the reset spring in the elastic direction respectively elastically abut against the fixing ring and the floating ring, and the lower end of the sliding rod penetrates out of the mounting seat and is sleeved with a limit nut.
Compared with the prior art, the invention has the beneficial effects that: through adding nanometer silica, improved the rigidity or the mechanical strength on PVC decorating film surface, through setting up hot pressing equipment to by the PVC substrate, the printing layer after the chill roll cools off hot pressing, improve printing layer solidification efficiency, scrape even subassembly through the setting, can scrape the printing layer surface evenly, avoid local fold phenomenon to produce, can carry out the tensioning respectively to PVC substrate, printing layer through setting up the tensioning subassembly, improve the quality after the hot pressing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hot pressing apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of the structure at A in FIG. 1;
fig. 3 is an enlarged schematic view of a partial structure at B in fig. 1.
In the drawings, the components represented by the respective reference numerals are listed below:
1-mounting plate, 2-uncoiling shaft, 3-hinge rod, 4-tensioning wheel, 5-mounting rod, 6-hot pressing roller, 7-cooling roller, 8-upper scraper, 9-lower scraper, 10-floating ring, 11-fixing ring, 12-limiting nut, 13-mounting seat, 14-reset spring, 15-sliding rod, 16-first connecting sleeve and 17-thread part.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides an environmental protection PVC decorating film, includes the PVC substrate and covers the printing layer on PVC substrate surface, it has the PVC membrane to print layer surface covering, the printing layer is waterborne printing ink layer, waterborne printing ink layer includes the following raw materials that count by weight fraction:
50 parts of water-based emulsified resin oil, 5 parts of a flatting agent, 3 parts of a silane coupling agent, 0.8 part of nano silicon dioxide, 1 part of a plasticizer, 5 parts of a heat stabilizer, 10 parts of a dye and the balance of a solvent, wherein the solvent is deionized water. The nano silicon dioxide is an inorganic chemical material and is commonly called white carbon black. Due to the superfine nanometer grade and the size range of 1-100 nm, the material has a plurality of unique properties, such as optical performance of resisting ultraviolet rays, and can improve the ageing resistance, strength and chemical resistance of other materials. The application is very wide. The nano-scale silicon dioxide is amorphous white powder, is nontoxic, tasteless and pollution-free, has a spherical microstructure, is in a flocculent and reticular quasi-particle structure, has a molecular formula and a structural formula of SiO2, and is insoluble in water. The nanometer is one dimension which is 10 meters, and the nanometer material means that at least one dimension is in the range of nanometer size, namely the range of 1-100 nanometers in three-dimensional space. The nano material has small-size effect, surface effect and macroscopic quantum random effect, thereby showing a plurality of special properties, and when the PVC decorative film has wide application prospects such as catalysis, light filtering, light absorption, medicine, magnetic media, new materials and the like and is prepared, firstly, the corona method is used for carrying out modification treatment on the surface of the PVC base material so as to achieve the purpose of reducing the surface tension of the PVC base material; then, laminating the printing layer on the PVC base material through hot-pressing equipment, and scraping the surface of the printing layer uniformly after laminating; and finally, laminating the PVC film on the surface of the printing layer through laminating equipment.
Referring to fig. 1-3, the embodiment further discloses a hot-pressing device used in the method for preparing the environment-friendly PVC decorative film, the hot-pressing device includes a mounting plate 1, two hot-pressing rollers 6, and two cooling rollers 7, two unwinding shafts 2 are disposed on the mounting plate 1, the two unwinding shafts 2 are respectively used for winding the printing layer and the PVC substrate, a tensioning assembly is disposed on the mounting plate 1, an even scraping assembly is disposed between the hot-pressing rollers 6 and the cooling rollers 7, and the hot-pressing rollers 6 are disposed between the mounting plate 1 and the cooling rollers 7.
In the embodiment, the tensioning assembly comprises two hinge rods 3 respectively hinged on two opposite sides of the mounting plate 1, one ends of the two hinge rods 3 far away from the mounting plate 1 are hinged with mounting rods 5, one ends of the mounting rods 5 are rotatably connected with tensioning wheels 4, the other ends of the two mounting rods 5 are hinged with first connecting sleeves 16 together, the mounting plate 1 is provided with second connecting sleeves coaxial with the first connecting sleeves 16, the first connecting sleeves 16 and the second connecting sleeves are connected with driving shafts together, two ends of the driving shafts in the length direction are respectively provided with threaded parts 17 with opposite thread turning directions, the two threaded parts 17 are respectively threaded on the first connecting sleeves 16 and the second connecting sleeves 16, when the PVC base material and the printing layer are tensioned, firstly, the two threaded parts 17 on the driving shafts are respectively screwed with the first connecting sleeves 16 and the second connecting sleeves 17 by rotating the driving shafts, and because the thread turning directions of the two threaded sleeves 17 are opposite, make first adapter sleeve 16, second adapter sleeve 17 relative movement, and then drive two installation poles 5 along the swing with hinge rod 3's articulated department to drive take-up pulley 4 swing, and then carry out the tensioning to PVC substrate, printing layer, single operation can carry out synchronous tensioning to printing layer and PVC substrate in step, has improved efficiency.
In this embodiment, the tensioning assembly includes two scraper blades that top-down set up, two scraper blades top-down define in proper order for last scraper blade 8, lower scraper blade 9 is moved by 8 directions of scraper blade up under its natural state of elastic drive unit drive, PVC substrate after the hot pressing, printing layer process last scraper blade 8, down between the scraper blade 9, and by last scraper blade 8, lower scraper blade 9 contradict PVC substrate, printing layer surface, make can scrape the PVC substrate, printing layer surface evenly, improve appearance quality.
In this embodiment, the elastic driving unit includes a mounting base 13, a sliding rod 15 capable of freely sliding up and down vertically penetrates through the mounting base 13, the upper end of the sliding rod 15 is fixedly connected with the lower scraper 9, the upper end of the sliding rod 15 is further sleeved with a floating ring 10, the mounting base 13 is further fixedly connected with a fixing ring 11, the sliding rod 15 is sleeved with a return spring 14, two ends of the elastic direction of the return spring 14 respectively elastically abut against the fixing ring 11 and the floating ring 10, the lower end of the sliding rod 15 penetrates out of the mounting base 13 and is sleeved with a limit nut 12, in a natural state, the return spring 14 elastically abuts against the floating ring 10 upwards, so that the lower scraper 9 moves upwards, and further the upper scraper, the lower scraper automatically abuts against a PVC substrate, a printing layer surface, and can be applicable to PVC substrates with different thicknesses, and printing layers.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides an environmental protection PVC decorating film which characterized in that, includes the PVC substrate and covers the printing layer on PVC substrate surface, the printing layer surface covers there is the PVC membrane, the printing layer is waterborne printing ink layer, waterborne printing ink layer includes the following raw materials that count by weight fraction:
50 parts of water-based emulsified resin oil, 5 parts of a flatting agent, 3 parts of a silane coupling agent, 0.8 part of nano silicon dioxide, 1 part of a plasticizer, 5 parts of a heat stabilizer, 10 parts of a dye and the balance of a solvent.
2. The environmentally friendly PVC decorative film according to claim 1, wherein the solvent is deionized water.
3. The preparation method of the environment-friendly PVC decorative film is characterized by comprising the following steps:
modifying the surface of the PVC base material by using a corona method;
covering and pressing the printing layer on the PVC base material through hot pressing equipment, and scraping the surface of the printing layer uniformly after covering and pressing;
and laminating the PVC film on the surface of the printing layer by laminating equipment.
4. The method for preparing the environment-friendly PVC decorative film according to claim 3, wherein the hot-pressing device comprises a mounting plate (1), two hot-pressing rollers (6) and two cooling rollers (7), wherein two uncoiling shafts (2) are arranged on the mounting plate (1), the two uncoiling shafts (2) are respectively used for coiling the printing layer and the PVC base material, a tensioning assembly is arranged on the mounting plate (1), a scraping assembly is arranged between the hot-pressing rollers (6) and the cooling rollers (7), and the hot-pressing rollers (6) are positioned between the mounting plate (1) and the cooling rollers (7).
5. The method for preparing environment-friendly PVC decorative film according to claim 4, the tensioning assembly comprises two hinge rods (3) respectively hinged on two opposite sides of the mounting plate (1), one end of each hinge rod (3) far away from the mounting plate (1) is hinged with a mounting rod (5), one end of each mounting rod (5) is rotatably connected with a tension wheel (4), the other ends of the two mounting rods (5) are hinged with a first connecting sleeve (16) together, a second connecting sleeve coaxial with the first connecting sleeve (16) is arranged on the mounting plate (1), the first connecting sleeve (16) and the second connecting sleeve are jointly connected with a driving shaft, two ends of the driving shaft in the length direction are respectively provided with a threaded part (17) with opposite thread turning directions, and the two threaded parts (17) are respectively threaded on the first connecting sleeve (16) and the second connecting sleeve in a penetrating mode.
6. The method for preparing environment-friendly PVC decorative film according to claim 4, wherein the tensioning assembly comprises two scrapers which are arranged from top to bottom, the two scrapers are sequentially defined as an upper scraper (8) and a lower scraper (9) from top to bottom, and the lower scraper (9) is driven by the elastic driving unit to move towards the upper scraper (8) in a natural state.
7. The method for preparing the environment-friendly PVC decorative film according to claim 6, wherein the elastic driving unit comprises a mounting seat (13), a sliding rod (15) capable of sliding up and down freely vertically penetrates through the mounting seat (13), the upper end of the sliding rod (15) is fixedly connected with the lower scraper (9), a floating ring (10) is further sleeved at the upper end of the sliding rod (15), a fixing ring (11) is fixedly connected to the mounting seat (13), a return spring (14) is sleeved on the sliding rod (15), two ends of the return spring (14) in the elastic direction elastically abut against the fixing ring (11) and the floating ring (10) respectively, and the lower end of the sliding rod (15) penetrates through the mounting seat (13) and is sleeved with a limit nut (12).
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| CN202111253016.XA CN114055883A (en) | 2021-10-27 | 2021-10-27 | Environment-friendly PVC decorative film and preparation method thereof |
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| CN209351046U (en) * | 2018-11-29 | 2019-09-06 | 四川禹王防水建材有限公司 | A kind of waterproof roll film covering device |
| CN209683114U (en) * | 2018-12-26 | 2019-11-26 | 昆山市生力包装材料有限公司 | A kind of composite roll Frictioning device |
| CN110450499A (en) * | 2019-09-18 | 2019-11-15 | 浙江汇锋薄膜科技有限公司 | A kind of preparation method of PETG water-based printing environmental-protection decoration film |
| CN211222418U (en) * | 2019-09-18 | 2020-08-11 | 无锡市上都新材料科技有限公司 | Protection film bubble remove device |
| CN211917992U (en) * | 2020-03-23 | 2020-11-13 | 海宁市金茂经编有限公司 | Prevent wrinkle free type spandex advertisement cloth processing of fold and use hot pressing set composite |
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