CN111923459A - Process for calendering sheet into film - Google Patents
Process for calendering sheet into film Download PDFInfo
- Publication number
- CN111923459A CN111923459A CN202010624627.XA CN202010624627A CN111923459A CN 111923459 A CN111923459 A CN 111923459A CN 202010624627 A CN202010624627 A CN 202010624627A CN 111923459 A CN111923459 A CN 111923459A
- Authority
- CN
- China
- Prior art keywords
- film
- mixture
- parts
- temperature
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- 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
-
- 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
- C08J2327/00—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
- C08J2327/02—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
- 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
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08J2425/00—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 an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
-
- 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
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
Abstract
The invention discloses a process for calendering and molding a thin film by a sheet, which relates to the technical field of molded thin films; the method is characterized by comprising the following steps: the invention can improve the plasticizing degree of the material, and make each roller have a certain speed ratio through the best matching of the roller temperature and the roller rotating speed, so that the rolled material can be sequentially adhered to the roller, thereby effectively ensuring the uniformity of the product thickness and improving the tensile strength of the product.
Description
Technical Field
The invention belongs to the technical field of formed films, and particularly relates to a process for calendering and forming a film by a sheet.
Background
A technology for manufacturing high-molecular film and sheet includes such steps as passing the material close to viscous flow through the gaps between parallel rollers rotating in opposite directions, extruding and stretching to obtain a sheet product with a certain thickness and width, passing the molten and plasticized thermoplastic plastic through the gaps between two rollers rotating in opposite directions, extruding, stretching to obtain a continuous sheet product with a certain size and quality, and natural cooling.
The existing formed film obtained by calendering has uneven thickness and poor tensile strength.
Disclosure of Invention
Aiming at solving the problems of the defects and the shortcomings of the prior art; the invention aims to provide a process for calendering and molding a thin film by sheets, which ensures that each roller has a certain speed ratio by improving the plasticizing degree of materials and optimally matching the roller temperature and the roller rotating speed, ensures that calendered objects are sequentially attached to the rollers, effectively ensures the uniformity of the thickness of a product and improves the tensile capacity of the product.
In order to achieve the purpose, the invention adopts the technical scheme that: the method is characterized by comprising the following steps: weighing raw materials according to a formula proportion, mixing the raw materials in sequence, plasticating the mixed raw materials, calendering and inspecting finished products, wherein the specific flow is as follows:
the raw materials are as follows: 50-100 parts of PVC resin powder, 20-50 parts of polystyrene, 10-40 parts of filling oil, 2-10 parts of heat stabilizer, 1-5 parts of softening agent, 1-5 parts of lubricant and 0.5-2 parts of antioxidant;
weighing and mixing PVC resin powder and polystyrene according to a ratio, wherein the adding sequence is that the PVC resin powder is added firstly, the polystyrene is added, the mixture is poured into a stirrer and stirred for 10-30 min at a low speed of 20-40 r/min, the PVC resin powder and the polystyrene are mixed into paste, filling oil, a heat stabilizer, a softening agent, a lubricant and an antioxidant are uniformly added while mixing, and then the mixture is stirred for 30-45 min at a high speed of 50-100r/min in the stirrer to obtain a first mixture;
loading a first mixture into an open mill, conveying the first mixture to a heating area through a single roller rod, wherein the temperature of the heating area is 180-230 degrees, heating the mixture, and then directly inputting the heated mixture into a feed inlet of a multi-roller rod extruder, the roller spacing between the multi-roller rods is 0.5-1 mm, the temperature between the multi-roller rods is 50-95 degrees, the rotating speed of the roller rods is 10-30 r/min, and the plastication time is 10-30 min, so as to obtain a second mixture;
directly inputting the second mixture in the step 3 into a double-screw extruder through a heat-insulation melt pipeline, respectively arranging a vacuumizing interface with the diameter of 50mm above a 2 nd heating area and a 3 rd heating area of the extruder, wherein the vacuum degree is-0.07 to-0.1 Mpa, the temperature of the resin composite material melted by the double-screw extruder is set to be 200 to 300 ℃, the temperature is set to be Gaussian curve, the second mixture is extruded by the double-screw extruder and then is input into a heat-insulation box with the temperature of 250 to 280 ℃, the heat-insulation box is provided with a metering pump, the melt is conveyed to a forming die on the equipment through the metering pump, the melt is sprayed out from the forming die to form a sheet with the thickness of 1 to 2mm and the width of 100 to 300mm, N2 gas with the temperature of-10 to-5 ℃ is blown at an outlet of the forming die, so that the temperature of the film sheet is reduced to 60 ℃ within 10s, and then the film sheet is conveyed, conveying the film to a channel with the length of 8m, the width of 0.8-1.2 m and the height of 1.0m for bidirectional drafting by a channel, conveying the film to a transverse/longitudinal three-stage double-shaft pressure wheel by the channel for rolling and drafting, performing heat treatment to obtain a film with the thickness of 0.01-0.05 mm and the width of 0.5-2 m, conveying the film to a cooling channel with the nitrogen temperature of-5 ℃ and the length of 1800mm, cooling the film for 10s on the cooling channel, and finally winding the film into a film roll by a winding machine;
and (4) inspecting a finished product: and (4) sampling and detecting the physical indexes of the products according to the product quality standard to inspect each roll of products.
Preferably, the softening agent comprises the following components in parts by weight: 5-10 parts of liquid paraffin, 1-5 parts of silicone oil, 1-5 parts of nano titanium dioxide and 1-5 parts of N-hydroxymethyl octadecanamide.
Preferably, the heat stabilizer is one or more of calcium ricinoleate, calcium stearate or magnesium stearate.
Preferably, the lubricant is one or more of glyceryl stearate, stearic acid amide, paraffin and polyethylene wax.
Preferably, the high temperature pasty mixture in step 4 is filtered using a 150 mesh copper wire mesh before being transferred to a forming mold.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the plasticizing degree of the material is improved, and the optimal matching of the roller temperature and the roller rotating speed is adopted, so that each roller has a certain speed ratio, the rolled objects are sequentially attached to the rollers, the uniformity of the product thickness is effectively ensured, and the tensile capacity of the product is improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by way of specific embodiments. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the scheme according to the present invention are shown in the following embodiments, and other details not closely related to the present invention are omitted.
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
Firstly weighing 58 parts of PVC resin powder, 23 parts of polystyrene, 13 parts of filling oil, 4 parts of calcium ricinoleate, 1 part of liquid paraffin, 0.2 part of silicone oil, 0.3 part of nano titanium dioxide, 0.3 part of N-hydroxymethyl octadecanamide, 3 parts of glyceryl stearate and 0.9 part of antioxidant according to a formula proportion, weighing and mixing the PVC resin powder and the polystyrene according to a proportion, adding the PVC resin powder and the polystyrene in sequence, adding the polystyrene, pouring the mixture into a stirrer, stirring the mixture for 15min at a low speed of 25r/min, mixing the PVC resin powder and the polystyrene into paste, uniformly adding the filling oil, the calcium ricinoleate, the liquid paraffin, the silicone oil, the nano titanium dioxide, the N-hydroxymethyl octadecanamide, the glyceryl stearate and the antioxidant while mixing, and stirring the mixture for 30min at a high speed stirrer at 70r/min to obtain a first mixture; loading the first mixture into an open mill, conveying the first mixture to a heating area through a single roller rod, wherein the temperature of the heating area is 185 degrees, heating the mixture, and then directly inputting the heated mixture into a feed inlet of a multi-roller rod extruder, the roller spacing between the multi-roller rods is 0.5mm, the temperature between the multi-roller rods is 55 degrees, the rotation speed of the roller rods is 15r/min, and plasticating time is 15min to obtain a second mixture; directly inputting the second mixture into a double-screw extruder through a heat-insulating melt pipeline, respectively arranging a vacuumizing interface with the diameter of 50mm above a 2 nd heating area and a 3 rd heating area of the extruder, wherein the vacuum degree is-0.08 Mpa, the temperature of the resin composite material melted by the double-screw extruder is set to be 200 ℃, the temperature is set to be Gaussian curve, the second mixture is extruded by the double-screw extruder and then is input into a heat-insulating box with the temperature of 250 ℃, a metering pump is arranged on the heat-insulating box, the melt is conveyed to a forming die on the device through the metering pump, the melt is sprayed out from the forming die to form a sheet with the thickness of 1mm and the width of 300mm, N2 gas with the temperature of-10 ℃ is blown at an outlet of the forming die, the temperature of the film sheet is reduced to 60 ℃ within 10 seconds, then the film sheet is conveyed into a belt-type channel with, A tunnel with the width of 1.0m and the height of 1.0m for bidirectional drafting, then the tunnel is conveyed to a transverse/or longitudinal three-level double-shaft pressure wheel for rolling and drafting, the film with the thickness of 0.05mm and the width of 1.5m is obtained by heat treatment, then the film is conveyed to a cooling tunnel with the nitrogen temperature of minus 5 ℃ and the length of 1800mm, the film is cooled for 10s in the cooling tunnel, and finally the film is wound into a film roll through a winding machine; finally, sampling and detecting the physical indexes of the products according to the quality standards of the products, and inspecting each roll of the products.
Example 2
Weighing 90 parts of PVC resin powder, 40 parts of polystyrene, 38 parts of filling oil, 8 parts of calcium stearate, 2 parts of liquid paraffin, 0.5 part of silicone oil, 0.5 part of nano titanium dioxide, 0.5 part of N-hydroxymethyl octadecanamide, 3 parts of stearic acid amide and 1.8 parts of antioxidant according to a formula proportion, weighing and mixing the PVC resin powder and the polystyrene according to a proportion, adding the PVC resin powder and the polystyrene in sequence, adding the polystyrene, pouring the mixture into a stirrer, stirring for 15min at a low speed of 30r/min, mixing the PVC resin powder and the polystyrene into paste, uniformly adding the filling oil, the calcium stearate, the liquid paraffin, the silicone oil, the nano titanium dioxide, the N-hydroxymethyl octadecanamide, the stearic acid amide and the antioxidant while mixing, and stirring for 35min at a high speed of 80r/min in the stirrer to obtain a first mixture; loading the first mixture into an open mill, conveying the first mixture to a heating area through a single roller rod, wherein the temperature of the heating area is 200 degrees, heating the mixture, and then directly inputting the heated mixture into a feed inlet of a multi-roller rod extruder, the roller spacing between the multi-roller rods is 0.7mm, the temperature between the multi-roller rods is 70 degrees, the rotating speed of the roller rods is 20r/min, and plasticating time is 20min to obtain a second mixture; directly inputting the second mixture into a double-screw extruder through a heat-insulating melt pipeline, respectively arranging a vacuumizing interface with the diameter of 50mm above a 2 nd heating area and a 3 rd heating area of the extruder, wherein the vacuum degree is-0.09 Mpa, the temperature of the resin composite material melted by the double-screw extruder is set to be 210 ℃, the temperature is set to be Gaussian curve, the second mixture is extruded by the double-screw extruder and then is input into a heat-insulating box with the temperature of 260 ℃, a metering pump is arranged on the heat-insulating box, the melt is conveyed to a forming die on the device through the metering pump, the melt is sprayed out from the forming die to form a sheet with the thickness of 1.5mm and the width of 200mm, N2 gas with the temperature of-10 ℃ is blown at an outlet of the forming die, the temperature of the film sheet is reduced to 60 ℃ within 10 seconds, then the film sheet is conveyed into a belt-type channel with, A tunnel with the width of 1.0m and the height of 1.0m for bidirectional drafting, then the tunnel is conveyed to a transverse/or longitudinal three-level double-shaft pressure wheel for rolling and drafting, the film with the thickness of 0.03mm and the width of 1.0m is obtained by heat treatment, then the film is conveyed to a cooling tunnel with the nitrogen temperature of minus 5 ℃ and the length of 1800mm, the film is cooled for 10s in the cooling tunnel, and finally the film is wound into a film roll through a winding machine; finally, sampling and detecting the physical indexes of the products according to the quality standards of the products, and inspecting each roll of the products.
Example 3
Firstly weighing 100 parts of PVC resin powder, 45 parts of polystyrene, 39 parts of filling oil, 9 parts of magnesium stearate, 2.1 parts of liquid paraffin, 0.7 part of silicone oil, 0.7 part of nano titanium dioxide, 0.7 part of N-hydroxymethyl octadecanamide, 1 part of paraffin, 2 parts of polyethylene wax and 2 parts of antioxidant according to a formula proportion, weighing and mixing the PVC resin powder and the polystyrene according to a proportion, adding the PVC resin powder and the polystyrene in the sequence, adding the polystyrene, pouring the mixture into a stirrer, stirring the mixture for 30min at a low speed of 40r/min, mixing the PVC resin powder and the polystyrene into paste, uniformly adding filling oil, magnesium stearate, liquid paraffin, silicone oil, nano titanium dioxide, N-hydroxymethyl octadecanamide, paraffin, polyethylene wax and an antioxidant while mixing, and stirring for 45min at 90r/min in a high-speed stirrer to obtain a first mixture; loading the first mixture into an open mill, conveying the first mixture to a heating area through a single roller rod, wherein the temperature of the heating area is 220 degrees, heating the mixture, and then directly inputting the heated mixture into a feed inlet of a multi-roller rod extruder, the roller spacing between the multi-roller rods is 0.8mm, the temperature between the multi-roller rods is 90 degrees, the rotation speed of the roller rods is 30r/min, and plasticating time is 30min to obtain a second mixture; directly inputting the second mixture into a double-screw extruder through a heat-insulating melt pipeline, respectively arranging a vacuumizing interface with the diameter of 50mm above a 2 nd heating area and a 3 rd heating area of the extruder, wherein the vacuum degree is-0.1 Mpa, the temperature of the resin composite material melted by the double-screw extruder is set to be 250 ℃, the temperature is set to be in a Gaussian curve shape, the second mixture is extruded by the double-screw extruder and then is input into a heat-insulating box with the temperature of 280 ℃, a metering pump is arranged on the heat-insulating box, the melt is conveyed to a forming die on the device through the metering pump, the melt is sprayed out from the forming die to form a sheet with the thickness of 2mm and the width of 100mm, N2 gas with the temperature of-10 ℃ is blown at an outlet of the forming die, the temperature of the film sheet is reduced to 60 ℃ within 10 seconds, then the film sheet is conveyed into a belt-, A tunnel with the width of 1.0m and the height of 1.0m for bidirectional drafting, then the tunnel is conveyed to a transverse/or longitudinal three-level double-shaft pressure wheel for rolling and drafting, the film with the thickness of 0.02mm and the width of 0.8m is obtained by heat treatment, then the film is conveyed to a cooling tunnel with the nitrogen temperature of minus 5 ℃ and the length of 1800mm, the film is cooled for 10s in the cooling tunnel, and finally the film is wound into a film roll through a winding machine; finally, sampling and detecting the physical indexes of the products according to the quality standards of the products, and inspecting each roll of the products.
The films produced in the three embodiments are tested for uniformity of film thickness, longitudinal strength and transverse strength through test experiments, and the test results are as follows:
as can be seen from the above table, the film produced by the present invention has better thickness uniformity and strength than the prior art.
The working principle of the specific embodiment is as follows: according to the invention, the plasticizing degree of the material is improved, and the optimal matching of the roller temperature and the roller rotating speed is adopted, so that each roller has a certain speed ratio, the rolled objects are sequentially attached to the rollers, the uniformity of the product thickness is effectively ensured, and the tensile capacity of the product is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A process for calendering and molding a film by a sheet is characterized by comprising the following steps: (1) weighing raw materials according to a formula ratio, (2) mixing the raw materials in sequence, (3) plasticating the mixed raw materials, (4) calendering and (5) inspecting finished products, wherein the specific process comprises the following steps:
(1) the raw materials are as follows: 50-100 parts of PVC resin powder, 20-50 parts of polystyrene, 10-40 parts of filling oil, 2-10 parts of heat stabilizer, 1-5 parts of softening agent, 1-5 parts of lubricant and 0.5-2 parts of antioxidant;
(2) weighing and mixing PVC resin powder and polystyrene according to a ratio, wherein the adding sequence is that the PVC resin powder is added firstly, the polystyrene is added, the mixture is poured into a stirrer and stirred for 10-30 min at a low speed of 20-40 r/min, the PVC resin powder and the polystyrene are mixed into paste, filling oil, a heat stabilizer, a softening agent, a lubricant and an antioxidant are uniformly added while mixing, and then the mixture is stirred for 30-45 min at a high speed of 50-100r/min in the stirrer to obtain a first mixture;
(3) loading a first mixture into an open mill, conveying the first mixture to a heating area through a single roller rod, wherein the temperature of the heating area is 180-230 degrees, heating the mixture, and then directly inputting the heated mixture into a feed inlet of a multi-roller rod extruder, the roller spacing between the multi-roller rods is 0.5-1 mm, the temperature between the multi-roller rods is 50-95 degrees, the rotating speed of the roller rods is 10-30 r/min, and the plastication time is 10-30 min, so as to obtain a second mixture;
(4) directly inputting the second mixture in the step (3) into a double-screw extruder through a heat-insulating melt pipeline, respectively arranging a vacuumizing interface with the diameter of 50mm above a heating area 2 and a heating area 3 of the extruder, wherein the vacuum degree is-0.07 to-0.1 Mpa, the temperature of the resin composite material melted by the double-screw extruder is set to be 200 to 300 ℃, the temperature is set to be Gaussian curve-shaped, the second mixture is extruded by the double-screw extruder and then is input into a heat-insulating box with the temperature of 250 to 280 ℃, the heat-insulating box is provided with a metering pump, the melt is conveyed to a forming die on the device through the metering pump, the melt is ejected from the forming die to form a sheet with the thickness of 1 to 2mm and the width of 100 to 300mm, N2 gas with the temperature of-10 to-5 ℃ is blown at an outlet of the forming die, so that the temperature of the film sheet is reduced to 60 ℃ within 10s, and then the film sheet is conveyed into, conveying the film to a channel with the length of 8m, the width of 0.8-1.2 m and the height of 1.0m for bidirectional drafting by a channel, conveying the film to a transverse/longitudinal three-stage double-shaft pressure wheel by the channel for rolling and drafting, performing heat treatment to obtain a film with the thickness of 0.01-0.05 mm and the width of 0.5-2 m, conveying the film to a cooling channel with the nitrogen temperature of-5 ℃ and the length of 1800mm, cooling the film for 10s on the cooling channel, and finally winding the film into a film roll by a winding machine;
(5) and (4) inspecting a finished product: and (4) sampling and detecting the physical indexes of the products according to the product quality standard to inspect each roll of products.
2. The process of sheet calendering to form a film according to claim 1, wherein: the softening agent comprises the following components in parts by weight: 5-10 parts of liquid paraffin, 1-5 parts of silicone oil, 1-5 parts of nano titanium dioxide and 1-5 parts of N-hydroxymethyl octadecanamide.
3. The process of sheet calendering to form a film according to claim 1, wherein: the heat stabilizer is one or more of calcium ricinoleate, calcium stearate or magnesium stearate.
4. The process of sheet calendering to form a film according to claim 1, wherein: the lubricant is one or more of glyceryl stearate, stearic acid amide, paraffin and polyethylene wax.
5. The process of sheet calendering to form a film according to claim 1, wherein: and (4) filtering the high-temperature pasty mixture in the step (4) by using a 150-mesh copper wire net before conveying the mixture to a forming die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624627.XA CN111923459A (en) | 2020-07-01 | 2020-07-01 | Process for calendering sheet into film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624627.XA CN111923459A (en) | 2020-07-01 | 2020-07-01 | Process for calendering sheet into film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111923459A true CN111923459A (en) | 2020-11-13 |
Family
ID=73317380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010624627.XA Pending CN111923459A (en) | 2020-07-01 | 2020-07-01 | Process for calendering sheet into film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111923459A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569950A (en) * | 2004-05-07 | 2005-01-26 | 宿迁市彩塑包装有限公司 | Polyvinyl chloride twisting membrane |
| CN101531062A (en) * | 2008-12-30 | 2009-09-16 | 福建思嘉环保材料科技有限公司 | High-elastic wear-resistant calendered film production process |
| CN104527101A (en) * | 2014-11-26 | 2015-04-22 | 界首市天鸿包装材料有限公司 | Production technology for R-PVC tangle film |
| CN107698890A (en) * | 2017-10-18 | 2018-02-16 | 安徽嘉阳新材料科技有限公司 | A kind of processing technology of floor film |
| CN108690298A (en) * | 2018-06-26 | 2018-10-23 | 中国集邮总公司 | A kind of polyvinyl chloride calendered film and preparation method thereof |
| CN111303565A (en) * | 2020-04-17 | 2020-06-19 | 浙江新铭隆科技有限公司 | Production process of transparent cold-mounted PVC (polyvinyl chloride) calendered film |
-
2020
- 2020-07-01 CN CN202010624627.XA patent/CN111923459A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569950A (en) * | 2004-05-07 | 2005-01-26 | 宿迁市彩塑包装有限公司 | Polyvinyl chloride twisting membrane |
| CN101531062A (en) * | 2008-12-30 | 2009-09-16 | 福建思嘉环保材料科技有限公司 | High-elastic wear-resistant calendered film production process |
| CN104527101A (en) * | 2014-11-26 | 2015-04-22 | 界首市天鸿包装材料有限公司 | Production technology for R-PVC tangle film |
| CN107698890A (en) * | 2017-10-18 | 2018-02-16 | 安徽嘉阳新材料科技有限公司 | A kind of processing technology of floor film |
| CN108690298A (en) * | 2018-06-26 | 2018-10-23 | 中国集邮总公司 | A kind of polyvinyl chloride calendered film and preparation method thereof |
| CN111303565A (en) * | 2020-04-17 | 2020-06-19 | 浙江新铭隆科技有限公司 | Production process of transparent cold-mounted PVC (polyvinyl chloride) calendered film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109776848B (en) | Method and device for directly preparing polylactic acid foamed product from polylactic acid polymerization melt | |
| CN104017310B (en) | A kind of biaxially orienting polyvinyl chloride pipe and preparation method thereof | |
| CN104441541B (en) | A kind of wood plastic composite produces unit | |
| CN107540920B (en) | Metallocene polyethylene composition and preparation method thereof | |
| CN103950204A (en) | Production device of BOPP (Biaxially-Oriented Polypropylene) film | |
| CN105172299B (en) | Boiling film production method | |
| CN214447919U (en) | Online recovery unit of sheet leftover bits in PVC sheet production process | |
| CN103009751B (en) | Biaxial stretching polypropylene high heat-seal film and manufacturing method thereof | |
| CN103009750B (en) | A kind of Biaxially oriented polypropylene common cigarette packaging film and manufacture method thereof | |
| CN111923459A (en) | Process for calendering sheet into film | |
| CN112898702A (en) | Environment-friendly ultrathin hard PVC sheet and assembly line production equipment thereof | |
| CN105881923A (en) | PET (Polyethylene Terephthalate) sheet production technology | |
| CN106945366B (en) | Special film for preserving packaged food for high-speed machine and preparation method thereof | |
| CN111716672A (en) | Special process method for producing PBT plastic plate | |
| CN115674628B (en) | Polyethylene ultra-thin film and preparation method thereof | |
| CN107722550A (en) | A kind of polyoxymethylene film and preparation method thereof | |
| CN102208586B (en) | Method and system for preparing dynamic lithium ion battery diaphragm | |
| CN105128370A (en) | Preparation method of high-flexibility BOPP (Biaxially-oriented Polypropylene) film | |
| CN102315404A (en) | Preparation method and system for power lithium ion battery diaphragm | |
| CN214447911U (en) | Tensioning device used before finished product collection in PVC sheet production line equipment | |
| CN112829412A (en) | High-performance polypropylene aluminum-plated base film and preparation method thereof | |
| CN210161568U (en) | Plastic forming double-stretching forming system | |
| CN209440743U (en) | A kind of film production quickly cooling device | |
| CN109334060B (en) | Preparation method of double-bubble internal water injection inflation PVC thermal contraction label film | |
| CN100540274C (en) | The process of preparation two-way stretching polyamide film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201113 |