CN113088015A - Anti-aging PVC vacuum plastic film and film pressing process thereof - Google Patents
Anti-aging PVC vacuum plastic film and film pressing process thereof Download PDFInfo
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- CN113088015A CN113088015A CN202110366724.8A CN202110366724A CN113088015A CN 113088015 A CN113088015 A CN 113088015A CN 202110366724 A CN202110366724 A CN 202110366724A CN 113088015 A CN113088015 A CN 113088015A
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- 238000003825 pressing Methods 0.000 title claims abstract description 37
- 230000003712 anti-aging effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002985 plastic film Substances 0.000 title claims abstract description 21
- 229920006255 plastic film Polymers 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 53
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 46
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000012745 toughening agent Substances 0.000 claims abstract description 29
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 28
- 239000000314 lubricant Substances 0.000 claims abstract description 28
- 239000004014 plasticizer Substances 0.000 claims abstract description 28
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 25
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 23
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 238000005187 foaming Methods 0.000 claims abstract description 23
- 239000004088 foaming agent Substances 0.000 claims abstract description 23
- 239000005060 rubber Substances 0.000 claims abstract description 23
- 150000001412 amines Chemical class 0.000 claims abstract description 21
- 239000004611 light stabiliser Substances 0.000 claims abstract description 21
- 230000002745 absorbent Effects 0.000 claims abstract description 17
- 239000002250 absorbent Substances 0.000 claims abstract description 17
- 238000004513 sizing Methods 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 238000000748 compression moulding Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000004049 embossing Methods 0.000 claims description 25
- 238000005266 casting Methods 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 239000010703 silicon Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 238000009966 trimming Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 5
- 239000008116 calcium stearate Substances 0.000 claims description 5
- 235000013539 calcium stearate Nutrition 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- BJAJDJDODCWPNS-UHFFFAOYSA-N dotp Chemical group O=C1N2CCOC2=NC2=C1SC=C2 BJAJDJDODCWPNS-UHFFFAOYSA-N 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 108010025899 gelatin film Proteins 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims description 5
- 239000004209 oxidized polyethylene wax Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 4
- 238000007723 die pressing method Methods 0.000 claims 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
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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
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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Abstract
The invention discloses an anti-aging PVC vacuum plastic film and a film pressing process thereof, and the formula comprises the following components: PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer, wherein the film pressing process comprises the following steps of preparing raw materials; step two, preparing a PVC sizing material; step three, preparing a PVC film; step four, cleaning the base material; step five, compression molding; compared with the existing PVC vacuum plastic-absorbing film, the anti-aging auxiliary agent and the anti-abrasion auxiliary agent are added in the formula of the PVC rubber material, so that the anti-aging property and the abrasion resistance of the PVC vacuum plastic-absorbing film are effectively improved, and the surface strength of a product is improved.
Description
Technical Field
The invention relates to the technical field of PVC vacuum plastic films, in particular to an anti-aging PVC vacuum plastic film and a film pressing process thereof.
Background
The vacuum plastic film is attached to the surface of an object after being subjected to thermoplastic molding by a film press, and is commonly used for manufacturing surface textures of furniture, the existing PVC vacuum plastic film is bright in color, corrosion-resistant, firm and durable, but poor in aging resistance, the surface of the existing PVC vacuum plastic film becomes rough after being exposed for a period of time in air or sunlight, the strength of the existing PVC vacuum plastic film is weakened, the decorative textures become dull and fuzzy, the existing mold pressing process adopts manual glue spraying, the surface of a base material is uneven, and the quality of a product is reduced.
Disclosure of Invention
The invention aims to provide an anti-aging PVC vacuum plastic film and a film pressing process thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the anti-aging PVC vacuum plastic film comprises the following components in percentage by weight: the PVC resin comprises PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer, wherein the PVC resin comprises the following components in percentage by mass: 70-82% of PVC resin, 3-9% of light calcium carbonate, 2-6% of foaming regulator, 2.3-4% of heat stabilizer, 2-4.5% of impact modifier, 2.5-4.7% of toughening agent, 1-2% of lubricant, 0.8-1.8% of ultraviolet absorbent, 0.5-1.2% of hindered amine light stabilizer, 0.4-1% of foaming agent and 0.2-0.8% of plasticizer.
The film pressing process of the anti-aging PVC vacuum plastic-absorbing film comprises the following steps of firstly, preparing raw materials; step two, preparing a PVC sizing material; step three, preparing a PVC film; step four, cleaning the base material; step five, compression molding;
in the first step, the components in percentage by mass are as follows: 70-82% of PVC resin, 3-9% of light calcium carbonate, 2-6% of foaming regulator, 2.3-4% of heat stabilizer, 2-4.5% of impact modifier, 2.5-4.7% of toughening agent, 1-2% of lubricant, 0.8-1.8% of ultraviolet absorbent, 0.5-1.2% of hindered amine light stabilizer, 0.4-1% of foaming agent and 0.2-0.8% of plasticizer, and the components are weighed according to the mass percentage sum of 1;
in the second step, the preparation of the PVC rubber compound comprises the following steps:
1) setting working parameters of the stirrer;
2) sequentially putting PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer into a stirrer, and mixing and stirring to obtain a PVC rubber material;
in the third step, the preparation of the PVC film comprises the following steps:
1) setting working parameters of an extrusion casting machine and an embossing machine;
2) conveying the PVC rubber material to an extrusion casting machine;
3) starting an extrusion casting machine, and extruding, cooling, drawing, trimming and static electricity removal are carried out on a PVC rubber material to obtain a PVC film;
4) conveying the PVC film to an embossing machine;
5) starting an embossing machine to carry out embossing treatment on the PVC film;
6) cooling the embossed PVC film and rolling the cooled PVC film for later use;
wherein in the fourth step, the surface of the base material is cleaned;
in the fifth step, the compression molding comprises the following steps:
1) setting processing parameters of a molding press;
2) mounting the PVC film, the silica gel film and the mould pressing sizing material on a mould pressing machine;
3) placing a substrate on a workbench of a molding press;
4) starting a molding press, thermally transferring a glue film to the back of the PVC film by using a built-in glue transferring device through the mold pressing glue, and automatically pumping out air between the heating plate and the silicon film to enable the silicon film to be adsorbed on the heating plate for preheating;
5) after the set time is reached, compressed air is automatically injected between the heating plate and the silicon film, the workbench and the PVC are vacuumized, the base material and the PVC are heated, and the PVC is coated on the base material under the action of the set pressure and temperature;
6) after the set time is reached, discharging compressed air, stopping the mould pressing machine, taking out the mould pressing finished product and carrying out trimming treatment;
7) the finished product was transferred to a warehouse palletized and compacted with a weight and held for 24 hours.
According to the technical scheme, the weight percentage of each component is as follows: 76% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 3% of impact modifier, 3% of toughening agent, 1.5% of lubricant, 1.3% of ultraviolet absorbent, 0.7% of hindered amine light stabilizer, 0.5% of foaming agent and 0.5% of plasticizer.
According to the technical scheme, in the step two 1), the stirring temperature of the stirrer is 110 ℃, the rotating speed is 480n/min, and the stirring time is 20 min.
According to the technical scheme, in the step two 2), the impact modifier is an ACR (acrylate copolymer) auxiliary agent, the plasticizer is a DOTP auxiliary agent, the toughening agent is a JS-100A toughening agent, the heat stabilizer is calcium stearate, and the lubricant is oxidized polyethylene wax.
According to the technical scheme, in the step three 1), the temperature of the feeding section of the extrusion casting machine is 185-195 ℃, the temperature of the compression section is 180 ℃, the temperature of the melting section is 180 ℃, the temperature of the metering section is 170-180 ℃, and the operating temperature of the embossing machine is 60 ℃.
According to the technical scheme, in the step five 4), the preheating time is 30-50s, and the preheating temperature is 60 ℃.
According to the technical scheme, in the step five 5), the vacuumizing time is 9-15s, the positive pressure is 3.5-4.0 bar, and the negative pressure is 0.7-0.8 bar.
Compared with the prior art, the invention has the following beneficial effects: compared with the existing PVC vacuum plastic-absorbing film, the anti-aging auxiliary agent and the anti-abrasion auxiliary agent are added in the formula of the PVC rubber material, so that the anti-aging property and the abrasion resistance of the PVC vacuum plastic-absorbing film are effectively improved, and the surface strength of a product is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a process flow diagram of the present invention.
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.
Referring to fig. 1, the present invention provides a technical solution:
example 1:
the anti-aging PVC vacuum plastic film comprises the following components in percentage by weight: the PVC resin comprises PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer, wherein the PVC resin comprises the following components in percentage by mass: 76% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 3% of impact modifier, 3% of toughening agent, 1.5% of lubricant, 1.3% of ultraviolet absorbent, 0.7% of hindered amine light stabilizer, 0.5% of foaming agent and 0.5% of plasticizer.
The film pressing process of the anti-aging PVC vacuum plastic-absorbing film comprises the following steps of firstly, preparing raw materials; step two, preparing a PVC sizing material; step three, preparing a PVC film; step four, cleaning the base material; step five, compression molding;
in the first step, the components in percentage by mass are as follows: selecting 76% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 3% of impact modifier, 3% of toughening agent, 1.5% of lubricant, 1.3% of ultraviolet absorbent, 0.7% of hindered amine light stabilizer, 0.5% of foaming agent and 0.5% of plasticizer, and weighing according to the mass percentage sum of 1;
in the second step, the preparation of the PVC rubber compound comprises the following steps:
1) setting working parameters of a stirrer, wherein the stirring temperature of the stirrer is 110 ℃, the rotating speed is 480n/min, and the stirring time is 20 min;
2) sequentially putting PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorber, a hindered amine light stabilizer, a foaming agent and a plasticizer into a stirrer, and mixing and stirring to obtain a PVC rubber material, wherein the impact modifier is an ACR (acrylate) auxiliary agent, the plasticizer is a DOTP auxiliary agent, the toughening agent is a JS-100A toughening agent, the heat stabilizer is calcium stearate, and the lubricant is oxidized polyethylene wax;
in the third step, the preparation of the PVC film comprises the following steps:
1) setting working parameters of an extrusion casting machine and an embossing machine, wherein the temperature of a feeding section of the extrusion casting machine is 185-195 ℃, the temperature of a compression section is 180 ℃, the temperature of a melting section is 180 ℃, the temperature of a metering section is 170-180 ℃, and the operating temperature of the embossing machine is 60 ℃;
2) conveying the PVC rubber material to an extrusion casting machine;
3) starting an extrusion casting machine, and extruding, cooling, drawing, trimming and static electricity removal are carried out on a PVC rubber material to obtain a PVC film;
4) conveying the PVC film to an embossing machine;
5) starting an embossing machine to carry out embossing treatment on the PVC film;
6) cooling the embossed PVC film and rolling the cooled PVC film for later use;
wherein in the fourth step, the surface of the base material is cleaned;
in the fifth step, the compression molding comprises the following steps:
1) setting processing parameters of a molding press;
2) mounting the PVC film, the silica gel film and the mould pressing sizing material on a mould pressing machine;
3) placing a substrate on a workbench of a molding press;
4) starting a molding press, thermally transferring a glue film to the back of the PVC film by using a built-in glue transferring device through the mold pressing glue, and automatically pumping out air between the heating plate and the silicon film to enable the silicon film to be adsorbed on the heating plate for preheating;
5) after the set time is reached, compressed air is automatically injected between the heating plate and the silicon membrane, the workbench and the PVC are vacuumized to heat the base material and the PVC, the PVC is coated on the base material under the action of the set pressure and temperature, the vacuumizing time is 9-15s, the positive pressure is 3.5-4.0 bar, and the negative pressure is 0.7-0.8 bar;
6) after the set time is reached, discharging compressed air, stopping the mould pressing machine, taking out the mould pressing finished product and carrying out trimming treatment;
7) the finished product was transferred to a warehouse palletized and compacted with a weight and held for 24 hours.
Example 2:
the anti-aging PVC vacuum plastic film comprises the following components in percentage by weight: the PVC resin comprises PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer, wherein the PVC resin comprises the following components in percentage by mass: 78% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 3% of impact modifier, 3% of toughening agent, 1.5% of lubricant, 0.5% of foaming agent and 0.5% of plasticizer.
The film pressing process of the anti-aging PVC vacuum plastic-absorbing film comprises the following steps of firstly, preparing raw materials; step two, preparing a PVC sizing material; step three, preparing a PVC film; step four, cleaning the base material; step five, compression molding;
in the first step, the components in percentage by mass are as follows: selecting 78% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 3% of impact modifier, 3% of toughening agent, 1.5% of lubricant, 0.5% of foaming agent and 0.5% of plasticizer, and weighing according to the mass percentage sum of 1;
in the second step, the preparation of the PVC rubber compound comprises the following steps:
1) setting working parameters of a stirrer, wherein the stirring temperature of the stirrer is 110 ℃, the rotating speed is 480n/min, and the stirring time is 20 min;
2) sequentially putting PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, a foaming agent and a plasticizer into a stirrer, mixing and stirring to obtain a PVC rubber material, wherein the impact modifier is an ACR (acrylic rubber) assistant, the plasticizer is a DOTP (dioctyl phthalate) assistant, the toughening agent is a JS-100A toughening agent, the heat stabilizer is calcium stearate, and the lubricant is oxidized polyethylene wax;
in the third step, the preparation of the PVC film comprises the following steps:
1) setting working parameters of an extrusion casting machine and an embossing machine, wherein the temperature of a feeding section of the extrusion casting machine is 185-195 ℃, the temperature of a compression section is 180 ℃, the temperature of a melting section is 180 ℃, the temperature of a metering section is 170-180 ℃, and the operating temperature of the embossing machine is 60 ℃;
2) conveying the PVC rubber material to an extrusion casting machine;
3) starting an extrusion casting machine, and extruding, cooling, drawing, trimming and static electricity removal are carried out on a PVC rubber material to obtain a PVC film;
4) conveying the PVC film to an embossing machine;
5) starting an embossing machine to carry out embossing treatment on the PVC film;
6) cooling the embossed PVC film and rolling the cooled PVC film for later use;
wherein in the fourth step, the surface of the base material is cleaned;
in the fifth step, the compression molding comprises the following steps:
1) setting processing parameters of a molding press;
2) mounting the PVC film, the silica gel film and the mould pressing sizing material on a mould pressing machine;
3) placing a substrate on a workbench of a molding press;
4) starting a molding press, thermally transferring a glue film to the back of the PVC film by using a built-in glue transferring device through the mold pressing glue, and automatically pumping out air between the heating plate and the silicon film to enable the silicon film to be adsorbed on the heating plate for preheating;
5) after the set time is reached, compressed air is automatically injected between the heating plate and the silicon membrane, the workbench and the PVC are vacuumized to heat the base material and the PVC, the PVC is coated on the base material under the action of the set pressure and temperature, the vacuumizing time is 9-15s, the positive pressure is 3.5-4.0 bar, and the negative pressure is 0.7-0.8 bar;
6) after the set time is reached, discharging compressed air, stopping the mould pressing machine, taking out the mould pressing finished product and carrying out trimming treatment;
7) the finished product was transferred to a warehouse palletized and compacted with a weight and held for 24 hours.
Example 3:
the anti-aging PVC vacuum plastic film comprises the following components in percentage by weight: the PVC resin comprises PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer, wherein the PVC resin comprises the following components in percentage by mass: 82% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 1.5% of lubricant, 1.3% of ultraviolet absorber, 0.7% of hindered amine light stabilizer, 0.5% of foaming agent and 0.5% of plasticizer.
The film pressing process of the anti-aging PVC vacuum plastic-absorbing film comprises the following steps of firstly, preparing raw materials; step two, preparing a PVC sizing material; step three, preparing a PVC film; step four, cleaning the base material; step five, compression molding;
in the first step, the components in percentage by mass are as follows: selecting 82% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 1.5% of lubricant, 1.3% of ultraviolet absorbent, 0.7% of hindered amine light stabilizer, 0.5% of foaming agent and 0.5% of plasticizer, and weighing according to the mass percentage sum of 1;
in the second step, the preparation of the PVC rubber compound comprises the following steps:
1) setting working parameters of a stirrer, wherein the stirring temperature of the stirrer is 110 ℃, the rotating speed is 480n/min, and the stirring time is 20 min;
2) sequentially putting PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer into a stirrer, and mixing and stirring to obtain a PVC rubber material, wherein the plasticizer is a DOTP (dioctyl phthalate) auxiliary agent, the heat stabilizer is calcium stearate, and the lubricant is oxidized polyethylene wax;
in the third step, the preparation of the PVC film comprises the following steps:
1) setting working parameters of an extrusion casting machine and an embossing machine, wherein the temperature of a feeding section of the extrusion casting machine is 185-195 ℃, the temperature of a compression section is 180 ℃, the temperature of a melting section is 180 ℃, the temperature of a metering section is 170-180 ℃, and the operating temperature of the embossing machine is 60 ℃;
2) conveying the PVC rubber material to an extrusion casting machine;
3) starting an extrusion casting machine, and extruding, cooling, drawing, trimming and static electricity removal are carried out on a PVC rubber material to obtain a PVC film;
4) conveying the PVC film to an embossing machine;
5) starting an embossing machine to carry out embossing treatment on the PVC film;
6) cooling the embossed PVC film and rolling the cooled PVC film for later use;
wherein in the fourth step, the surface of the base material is cleaned;
in the fifth step, the compression molding comprises the following steps:
1) setting processing parameters of a molding press;
2) mounting the PVC film, the silica gel film and the mould pressing sizing material on a mould pressing machine;
3) placing a substrate on a workbench of a molding press;
4) starting a molding press, thermally transferring a glue film to the back of the PVC film by using a built-in glue transferring device through the mold pressing glue, and automatically pumping out air between the heating plate and the silicon film to enable the silicon film to be adsorbed on the heating plate for preheating;
5) after the set time is reached, compressed air is automatically injected between the heating plate and the silicon membrane, the workbench and the PVC are vacuumized to heat the base material and the PVC, the PVC is coated on the base material under the action of the set pressure and temperature, the vacuumizing time is 9-15s, the positive pressure is 3.5-4.0 bar, and the negative pressure is 0.7-0.8 bar;
6) after the set time is reached, discharging compressed air, stopping the mould pressing machine, taking out the mould pressing finished product and carrying out trimming treatment;
7) the finished product was transferred to a warehouse palletized and compacted with a weight and held for 24 hours.
Taking the PVC rubber material in each example, respectively preparing 10 test pieces with the thickness of 8mm, irradiating for 24 hours by using ultraviolet rays in the same environment, and comparing the properties of each example with the following table:
based on the above, compared with the existing PVC vacuum plastic-absorbing film, the hindered amine light stabilizer and the ultraviolet absorber are added in the formula of the PVC sizing material, so that the aging resistance of the PVC vacuum plastic-absorbing film is effectively improved, the wear resistance and the corrosion resistance of the PVC vacuum plastic-absorbing film are improved by adding the toughening agent and the impact modifier, and the uniformity of glue spraying is effectively improved by using automatic glue spraying equipment to replace manual glue spraying, so that the flatness of the surface of the base material is improved, the generation of particles is reduced, and the molded finished product has mirror surface feeling.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An anti-aging PVC vacuum plastic film comprises the following components in percentage by weight: PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorber, a hindered amine light stabilizer, a foaming agent and a plasticizer, and is characterized in that: the weight percentage of each component is as follows: 70-82% of PVC resin, 3-9% of light calcium carbonate, 2-6% of foaming regulator, 2.3-4% of heat stabilizer, 2-4.5% of impact modifier, 2.5-4.7% of toughening agent, 1-2% of lubricant, 0.8-1.8% of ultraviolet absorbent, 0.5-1.2% of hindered amine light stabilizer, 0.4-1% of foaming agent and 0.2-0.8% of plasticizer.
2. The film pressing process of the anti-aging PVC vacuum plastic-absorbing film comprises the following steps of firstly, preparing raw materials; step two, preparing a PVC sizing material; step three, preparing a PVC film; step four, cleaning the base material; step five, compression molding; the method is characterized in that:
in the first step, the components in percentage by mass are as follows: 70-82% of PVC resin, 3-9% of light calcium carbonate, 2-6% of foaming regulator, 2.3-4% of heat stabilizer, 2-4.5% of impact modifier, 2.5-4.7% of toughening agent, 1-2% of lubricant, 0.8-1.8% of ultraviolet absorbent, 0.5-1.2% of hindered amine light stabilizer, 0.4-1% of foaming agent and 0.2-0.8% of plasticizer, and the components are weighed according to the mass percentage sum of 1;
in the second step, the preparation of the PVC rubber compound comprises the following steps:
1) setting working parameters of the stirrer;
2) sequentially putting PVC resin, light calcium carbonate, a foaming regulator, a heat stabilizer, an impact modifier, a toughening agent, a lubricant, an ultraviolet absorbent, a hindered amine light stabilizer, a foaming agent and a plasticizer into a stirrer, and mixing and stirring to obtain a PVC rubber material;
in the third step, the preparation of the PVC film comprises the following steps:
1) setting working parameters of an extrusion casting machine and an embossing machine;
2) conveying the PVC rubber material to an extrusion casting machine;
3) starting an extrusion casting machine, and extruding, cooling, drawing, trimming and static electricity removal are carried out on a PVC rubber material to obtain a PVC film;
4) conveying the PVC film to an embossing machine;
5) starting an embossing machine to carry out embossing treatment on the PVC film;
6) cooling the embossed PVC film and rolling the cooled PVC film for later use;
wherein in the fourth step, the surface of the base material is cleaned;
in the fifth step, the compression molding comprises the following steps:
1) setting processing parameters of a molding press;
2) mounting the PVC film, the silica gel film and the mould pressing sizing material on a mould pressing machine;
3) placing a substrate on a workbench of a molding press;
4) starting a molding press, thermally transferring a glue film to the back of the PVC film by using a built-in glue transferring device through the mold pressing glue, and automatically pumping out air between the heating plate and the silicon film to enable the silicon film to be adsorbed on the heating plate for preheating;
5) after the set time is reached, compressed air is automatically injected between the heating plate and the silicon film, the workbench and the PVC are vacuumized, the base material and the PVC are heated, and the PVC is coated on the base material under the action of the set pressure and temperature;
6) after the set time is reached, discharging compressed air, stopping the mould pressing machine, taking out the mould pressing finished product and carrying out trimming treatment;
7) the finished product was transferred to a warehouse palletized and compacted with a weight and held for 24 hours.
3. The anti-aging PVC vacuum plastic film according to claim 1, characterized in that: the weight percentage of each component is as follows: 76% of PVC resin, 6% of light calcium carbonate, 4.5% of foaming regulator, 3% of heat stabilizer, 3% of impact modifier, 3% of toughening agent, 1.5% of lubricant, 1.3% of ultraviolet absorbent, 0.7% of hindered amine light stabilizer, 0.5% of foaming agent and 0.5% of plasticizer.
4. The die pressing process of the anti-aging PVC vacuum plastic film according to claim 2, characterized in that: in the second step 1), the stirring temperature of the stirrer is 110 ℃, the rotating speed is 480n/min, and the stirring time is 20 min.
5. The die pressing process of the anti-aging PVC vacuum plastic film according to claim 2, characterized in that: in the second step 2), the impact modifier is ACR auxiliary agent, the plasticizer is DOTP auxiliary agent, the toughening agent is JS-100A toughening agent, the heat stabilizer is calcium stearate, and the lubricant is oxidized polyethylene wax.
6. The die pressing process of the anti-aging PVC vacuum plastic film according to claim 2, characterized in that: in the third step 1), the temperature of the feeding section of the extrusion casting machine is 185-195 ℃, the temperature of the compression section is 180 ℃, the temperature of the melting section is 180 ℃, the temperature of the metering section is 170-180 ℃, and the operating temperature of the embossing machine is 60 ℃.
7. The die pressing process of the anti-aging PVC vacuum plastic film according to claim 2, characterized in that: in the step five 4), the preheating time is 30-50s, and the preheating temperature is 60 ℃.
8. The die pressing process of the anti-aging PVC vacuum plastic film according to claim 2, characterized in that: in the step five 5), the vacuumizing time is 9-15s, the positive pressure is 3.5-4.0 bar, and the negative pressure is 0.7-0.8 bar.
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