CN108047588B - Preparation method of cold mounting film - Google Patents
Preparation method of cold mounting film Download PDFInfo
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- CN108047588B CN108047588B CN201711160988.8A CN201711160988A CN108047588B CN 108047588 B CN108047588 B CN 108047588B CN 201711160988 A CN201711160988 A CN 201711160988A CN 108047588 B CN108047588 B CN 108047588B
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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
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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
- 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
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- 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
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- 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
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- 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
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Abstract
The invention provides a preparation method of a cold laminating film. The preparation method comprises the following steps: step S1, uniformly mixing raw materials including PVC and a plasticizer to obtain a raw material composition, wherein the raw material composition comprises 100 parts of PVC and 20-38 parts of plasticizer by weight, and the polymerization degree of the PVC is 700-950; step S2, cooling and stirring the raw material composition to obtain a cooled mixture; step S3, plasticizing the cooled mixture to obtain a plasticized mixture; and step S4, rolling and molding the plasticized mixture to obtain the cold laminating film. By adopting the PVC with the polymerization degree, the plasticizing effect of the prepared cold laminating film is improved, the phenomenon that the surface of the cold laminating film is uneven is reduced, and the cold laminating film can have an excellent surface spraying effect.
Description
Technical Field
The invention relates to the technical field of materials, in particular to a preparation method of a cold laminating film.
Background
Polyvinyl chloride materials are widely used in various fields because of their excellent mechanical properties, flexibility, chemical resistance and low price. Different additives can be added into the polyvinyl chloride material according to different purposes to prepare different polyvinyl chloride products, for example, a proper amount of additives such as a plasticizer and the like are added into the polyvinyl chloride to prepare cold laminating films.
The cold laminating film in the prior art is generally used for laminating on a picture printed by portraits, the picture (printing surface) is prevented from being scratched, polluted or wetted, the picture is protected, surface painting is generally required to be carried out on the surface of the cold laminating film, the display effect of the picture is improved, however, the problem that the surface painting effect is poor exists after the surface painting of the cold laminating film in the prior art is solved, and the cold laminating film is not effectively used in the prior art.
Disclosure of Invention
The invention mainly aims to provide a preparation method of a cold laminating film, which aims to solve the problem that the cold laminating film in the prior art has poor surface spraying effect after surface spraying.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method for preparing a cold laminating film, the method comprising the steps of: step S1, mixing raw materials including PVC and a plasticizer to obtain a raw material composition, wherein the raw material composition comprises 100 parts of PVC and 20-38 parts of the plasticizer by weight, and the polymerization degree of the PVC is 700-950; step S2, cooling and stirring the raw material composition to obtain a cooled mixture; step S3, plasticizing the cooled mixture to obtain a plasticized mixture; and step S4, rolling and molding the plasticized mixture to obtain the cold laminating film.
Further, the amount of the plasticizer is 22 to 30 parts.
Furthermore, the raw material also comprises a barium-zinc stabilizer, preferably the weight of the barium-zinc stabilizer is 2-3.5 parts.
Further, in step S1, the raw materials including PVC, plasticizer and barium zinc stabilizer are introduced into a mixer for mixing treatment, preferably, the mixing rate of the mixing treatment is 1400 to 1500 rpm, the mixing time of the mixing treatment is 250 to 350S, and the mixing temperature of the mixing treatment is 110 to 120 ℃.
Further, in step S2, the raw material composition is introduced into a cooling mixer to be subjected to a cooling mixing treatment, preferably, the mixing rate of the cooling mixing treatment is lower than that of the mixing treatment.
Further, the stirring speed of the cooling stirring treatment is 300-400 r/min, the stirring time of the stirring treatment is 400-500 s, and the stirring temperature of the stirring treatment is 55-65 ℃.
Further, in step S3, the temperature for plasticizing the cooled mixture is 165 to 175 ℃.
Further, in step S4, the temperature for calendering the plasticized mixture is 182 to 198 ℃.
And further, introducing the plasticized mixture into a five-roller rolling machine for rolling and forming, wherein the five-roller rolling machine comprises five rollers which are sequentially connected along the material flowing direction, preferably, the rolling temperature of the front three rollers along the material flowing direction is 182-185 ℃ respectively and independently, and the rolling temperature of the last two rollers is 194-198 ℃ respectively and independently.
Further, before step S4, the preparation method further includes a step of filtering the plasticized mixture.
According to the technical scheme, the preparation method of the cold-mounted film comprises the steps of uniformly mixing raw materials including PVC and a plasticizer to obtain a raw material composition, wherein the raw material composition comprises 100 parts of PVC and 20-38 parts of the plasticizer by weight, the polymerization degree of the PVC is 700-950, cooling and stirring the raw material composition to obtain a cooled mixture, plasticizing the cooled mixture to obtain a plasticized mixture, and finally performing calendaring molding on the plasticized mixture to obtain the cold-mounted film.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic flow chart of a preparation method of the cold laminating film provided by the embodiment of the invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions of the present invention better understood, 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As described in the background art, the cold mounting film in the prior art has the problem of poor surface spraying effect after surface spraying. The inventor of the present application has studied on the above problems and proposed a method for preparing a cold laminating film, as shown in fig. 1, which comprises the following steps: step S1, mixing raw materials including PVC and a plasticizer to obtain a raw material composition, wherein the raw material composition comprises 100 parts of PVC and 20-38 parts of the plasticizer by weight, and the polymerization degree of the PVC is 700-950; step S2, cooling and stirring the raw material composition to obtain a cooled mixture; step S3, plasticizing the cooled mixture to obtain a plasticized mixture; and step S4, rolling and molding the plasticized mixture to obtain the cold laminating film.
According to the preparation method of the cold laminating film, raw materials comprising PVC and a plasticizer are uniformly mixed to obtain a raw material composition, the raw material composition comprises 100 parts of PVC and 20-38 parts of the plasticizer according to parts by weight, the polymerization degree of the PVC is 700-950, the raw material composition is cooled and stirred to obtain a cooled mixture, the cooled mixture is plasticized to obtain a plasticized mixture, and finally the plasticized mixture is rolled and molded to obtain the cold laminating film.
An exemplary embodiment of a method for producing a cold laminating film provided according to the present invention will be described in more detail below. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
First, step S1 is executed: the raw materials comprising the PVC and the plasticizer are uniformly mixed to obtain the raw material composition, and the raw material composition comprises 100 parts of the PVC and 20-38 parts of the plasticizer according to parts by weight, wherein the polymerization degree of the PVC is 700-950. In the prior art, PVC required for preparing the cold mounting film is usually five-type powder, the average polymerization degree of the five-type powder is 1000, the PVC adopted by the invention can be seven-type powder, the PVC can be seven-type powder, and the average polymerization degree of the seven-type powder is 800.
In step S1, the amount of the plasticizer is preferably 22-30 parts to improve the toughness of the prepared cold laminating film. The kind of the plasticizer is reasonably selected by those skilled in the art according to the prior art, and the plasticizer may include dioctyl phthalate and soybean oil, and in order to enable the prepared cold-laminating film to have higher tensile property and wear resistance, the amount of dioctyl phthalate and soybean oil is preferably 18-28 parts, and the amount of soybean oil is preferably 2-8 parts.
In order to further improve the performance of the cold laminating film prepared from the raw material composition, preferably, the raw material composition further comprises a barium zinc stabilizer; more preferably, the barium zinc stabilizer is 2 to 3.5 parts by weight. The skilled person can reasonably select the type of the barium zinc stabilizer according to the prior art, and preferably, the barium zinc stabilizer comprises a liquid barium zinc stabilizer and/or a powder barium zinc stabilizer.
In the step S1, the raw materials including PVC, plasticizer and barium zinc stabilizer are preferably introduced into a mixer to be mixed, and in this case, in order to improve the uniformity of the raw material composition formed by mixing the above components, it is more preferable that the stirring rate of the mixing process is 1400 to 1500 rpm, the stirring time of the mixing process is 250 to 350 seconds, and the stirring temperature of the mixing process is 110 to 120 ℃.
After the above step S1 is completed, step S2 is performed: and cooling and stirring the raw material composition to obtain a cooled mixture. Through the cooling and stirring treatment, the raw material composition can be cooled, the mixing uniformity of the raw material components can be further improved, and crystal impurity points are avoided.
In the step S2, the raw material composition may be introduced into a cooling mixer to be subjected to a cooling and stirring treatment, and in this case, in order to improve the cooling effect on the raw material composition and the homogeneity of the cooled mixture, the stirring rate of the cooling and stirring treatment is preferably lower than the stirring rate of the mixing treatment; more preferably, the stirring speed of the cooling stirring treatment is 300-400 r/min, the stirring time of the stirring treatment is 400-500 s, and the stirring temperature of the stirring treatment is 55-65 ℃.
After the above step S2 is completed, step S3 is performed: and plasticizing the cooled mixture to obtain a plasticized mixture. In order to improve the plasticizing effect, preferably, in step S3, the temperature for plasticizing the cooled mixture is 165-175 ℃; more preferably, the cooled mixture obtained after the above step S2 is fed to a planetary extruder for plasticizing, the planetary extruder being divided into three heating zones, the temperatures of the three heating zones in the flow direction of the material being 140 ℃, 170 ℃ and 165 ℃, respectively.
In a preferred embodiment, the method for preparing the cold laminating film further comprises the step of filtering the plasticized mixture after the step of plasticizing the cooled mixture. In order to improve the performance of the prepared cold laminating film, the plasticized mixture is preferably filtered by a filter, and the mesh number of the filter screen in the filter is 200 meshes.
After the above step S3 is completed, step S4 is performed: and rolling and molding the plasticized mixture to obtain the cold laminating film. The equipment and process conditions for calendering can be set by those skilled in the art according to the prior art. In order to improve the calendering effect of the plasticized mixture, the calendering temperature of the plasticized mixture is preferably 182-198 ℃, more preferably, the plasticized mixture is introduced into a five-roll calender for calendering and molding, the five-roll calender comprises five rolls which are sequentially connected along the material flowing direction, the calendering temperature of the front three rolls along the material flowing direction is 182-185 ℃, and the calendering temperature of the rear two rolls is 194-198 ℃.
The preparation method of the cold laminating film provided by the invention is further explained by combining the examples and the comparative examples.
Example 1
The preparation method of the cold laminating film provided by the embodiment comprises the following steps:
step S1, introducing 100 parts of PVC, 20 parts of plasticizer and 1.5 parts of barium-zinc stabilizer into a mixer for mixing treatment to obtain a raw material composition, wherein the PVC is hepta-powder (model number is TL-700), the average polymerization degree is 800, the plasticizer comprises dioctyl phthalate and soybean oil, the part of the dioctyl phthalate is 16, the part of the soybean oil is 4, the stirring speed of the mixing treatment is 1350 revolutions per minute, the stirring time of the mixing treatment is 250S, and the stirring temperature of the mixing treatment is 105 ℃;
step S2, introducing the raw material composition into a cooling stirrer for cooling and stirring treatment, wherein the stirring speed of the cooling and stirring treatment is 280 revolutions per minute, the stirring time of the stirring treatment is 420S, and the stirring temperature of the stirring treatment is 52 ℃;
step S3, adding the cooled mixture into a planetary extruder for plasticizing to obtain a plasticized mixture, wherein the plasticizing temperature is 162 ℃;
and step S4, introducing the plasticized mixture into a five-roller calender for calendering and molding until cold laminating is finished, wherein the five-roller calender comprises five rollers which are sequentially connected along the material flowing direction, the calendering temperature of the front three rollers along the material flowing direction is 180 ℃, and the calendering temperature of the rear two rollers is 180 ℃.
Example 2
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 1 in that:
the amount of plasticizer was 38 parts, wherein the amount of dioctyl phthalate was 30 parts and the amount of soybean oil was 8 parts.
Example 3
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 1 in that:
the amount of plasticizer was 22 parts, wherein the amount of dioctyl phthalate was 18 parts and the amount of soybean oil was 4 parts.
Example 4
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 1 in that:
the weight portion of the plasticizer is 30, the weight portion of the barium-zinc stabilizer is 3.5, the weight portion of the dioctyl phthalate is 25, and the weight portion of the soybean oil is 5.
Example 5
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 4 in that:
in step S1, the stirring rate of the mixing treatment was 1400 rpm, the stirring time of the mixing treatment was 350 seconds, and the stirring temperature of the mixing treatment was 110 ℃.
Example 6
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 4 in that:
in step S1, the stirring rate of the mixing process was 1500 rpm, the stirring time of the mixing process was 250S, and the stirring temperature of the mixing process was 120 ℃.
Example 7
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 6 in that:
in step S2, the stirring rate in the cooling and stirring process was 300 rpm, the stirring time in the stirring process was 500 seconds, and the stirring temperature in the stirring process was 55 ℃.
Example 8
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 6 in that:
in step S2, the stirring rate in the cooling and stirring process was 400 rpm, the stirring time in the stirring process was 400 seconds, and the stirring temperature in the stirring process was 65 ℃.
Example 9
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 8 in that:
in step S3, the temperature of the plasticizing treatment was 165 ℃.
Example 10
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 8 in that:
in step S3, the temperature of the plasticizing treatment was 175 ℃.
Example 11
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 10 in that:
in step S4, the five-roll calender includes five rolls sequentially connected in the material flowing direction, and the calendering temperature of the first three rolls in the material flowing direction is 182 ℃, and the calendering temperature of the last two rolls is 194 ℃.
Example 12
The preparation method of the cold laminating film provided by the embodiment is different from that of the embodiment 10 in that:
in step S4, the five-roll calender includes five rolls connected in sequence along the material flowing direction, the calendering temperature of the first three rolls along the material flowing direction is 185 ℃, and the calendering temperature of the last two rolls is 198 ℃.
Example 13
The preparation method of the cold laminating film provided by the embodiment comprises the following steps:
step S1, introducing 100 parts of PVC, 28 parts of plasticizer and 2 parts of barium-zinc stabilizer into a mixer for mixing treatment to obtain a raw material composition, wherein the PVC is hepta-powder, the average polymerization degree is 800, the plasticizer comprises dioctyl phthalate and soybean oil, the part of the dioctyl phthalate is 24, the part of the soybean oil is 4, the stirring speed of the mixing treatment is 1450 revolutions per minute, the stirring time of the mixing treatment is 300S, and the stirring temperature of the mixing treatment is 105 ℃;
step S2, introducing the raw material composition into a cooling stirrer for cooling and stirring treatment, wherein the stirring speed of the cooling and stirring treatment is 350 r/min, the stirring time of the stirring treatment is 480S, and the stirring temperature of the stirring treatment is 60 ℃;
step S3, adding the cooled mixture into a planetary extruder for plasticizing to obtain a plasticized mixture, wherein the plasticizing temperature is 170 ℃, and then adding the plasticized mixture into a filter for filtering, and the mesh number of a filter screen in the filter is 200 meshes;
and step S4, introducing the plasticized mixture into a five-roller calender for calendering and molding until cold laminating is finished, wherein the five-roller calender comprises five rollers which are sequentially connected along the material flowing direction, the calendering temperature of the front three rollers along the material flowing direction is 183 ℃, and the calendering temperature of the rear two rollers is 196 ℃.
Comparative example 1
The preparation method of the cold laminating film provided by the embodiment comprises the following steps:
step S1, introducing 100 parts of PVC, 28 parts of plasticizer and 1.5 parts of barium-zinc stabilizer into a mixer for mixing treatment to obtain a raw material composition, wherein the PVC is five-type powder (type S-1000, zilupetrochemical), the average polymerization degree is 1000, the plasticizer comprises dioctyl phthalate and soybean oil, the part of the dioctyl phthalate is 24, the part of the soybean oil is 4, the stirring speed of the mixing treatment is 1450 revolutions per minute, the stirring time of the mixing treatment is 300S, and the stirring temperature of the mixing treatment is 105 ℃;
step S2, introducing the raw material composition into a cooling stirrer for cooling and stirring treatment, wherein the stirring speed of the cooling and stirring treatment is 350 r/min, the stirring time of the stirring treatment is 480S, and the stirring temperature of the stirring treatment is 60 ℃;
step S3, adding the cooled mixture into a planetary extruder for plasticizing to obtain a plasticized mixture, wherein the plasticizing temperature is 170 ℃, and then adding the plasticized mixture into a filter for filtering, and the mesh number of a filter screen in the filter is 200 meshes; and
and step S4, introducing the plasticized mixture into a five-roller calender for calendering and molding until cold laminating is finished, wherein the five-roller calender comprises five rollers which are sequentially connected along the material flowing direction, the calendering temperature of the front three rollers along the material flowing direction is 183 ℃, and the calendering temperature of the rear two rollers is 196 ℃.
The surface spray effect of the cold mount films prepared using the raw material compositions in the above examples 1 to 10 and comparative example 1 was tested by the following method: the same printing ink is sprayed on the surfaces of the cold mounting films, then the surfaces of the cold mounting films are observed, and the test result shows that: the starting point and the streak phenomenon appear on the surface of the cold laminating film prepared by the raw material composition in the comparative example 1, namely the phenomenon of ink aggregation and non-uniformity exists, while the starting point or the streak phenomenon does not appear on the surface of the cold laminating film prepared by the raw material composition in the above examples 1 to 10, namely the phenomenon of ink aggregation does not exist, and the excellent spraying effect is realized.
The cold mount films of examples 1 to 13 and comparative example 1 were tested for dyne value and shrinkability, wherein each of the cold mount films was tested for dyne value using a dyne pen and each of the cold mount films of the same size (20 cm. times.2 cm) was placed in hot water at 100 ℃ for heat shrinkage, and the test results are shown in the following table:
| example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | |
| Dyne value | 38 | 39 | 39 | 39 | 40 | 40 | 41 |
| Shrinkage property | 9％ | 7％ | 8％ | 7％ | 7％ | 7％ | 7％ |
| Example 8 | Example 9 | Example 10 | Example 11 | Example 12 | Example 13 | Comparative example 1 | |
| Dyne value | 41 | 42 | 42 | 44 | 44 | 46 | 36 |
| Shrinkage property | 7％ | 6％ | 6％ | 5％ | 5％ | 5％ | 10％ |
From the above test results, it can be seen that the cold mount films of examples 1 to 13 of the present application each have a higher dyne value and shrinkability than those of comparative example 1.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the preparation method comprises the steps of uniformly mixing raw materials including PVC and a plasticizer to obtain a raw material composition, wherein the raw material composition comprises 100 parts of PVC and 20-38 parts of the plasticizer by weight, the polymerization degree of the PVC is 700-950, then cooling and stirring the raw material composition to obtain a cooled mixture, plasticizing the cooled mixture to obtain a plasticized mixture, and finally calendering and molding the plasticized mixture to obtain the cold laminating film.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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 (12)
1. The preparation method of the cold laminating film is characterized by comprising the following steps of:
step S1, mixing raw materials including PVC and a plasticizer to obtain a raw material composition, wherein the raw material composition comprises 100 parts of PVC and 20-38 parts of the plasticizer by weight, and the polymerization degree of the PVC is 800;
step S2, cooling and stirring the raw material composition to obtain a cooled mixture;
step S3, plasticizing the cooled mixture to obtain a plasticized mixture; and
step S4, the plasticized mixture is rolled and molded to obtain the cold laminating film,
in the step S4, the temperature for calendering and molding the plasticized mixture is 182-198 ℃,
and introducing the plasticized mixture into a five-roller calender for calendering and molding, wherein the five-roller calender comprises five rollers which are sequentially connected along the material flowing direction.
2. The production method according to claim 1, wherein the calendering temperatures of the first three rollers are each independently 182 to 185 ℃ in the material flow direction, and the calendering temperatures of the last two rollers are each independently 194 to 198 ℃.
3. The method according to claim 1, wherein the plasticizer is used in an amount of 22 to 30 parts.
4. The method of claim 1, wherein the feedstock further comprises a barium zinc stabilizer.
5. The method according to claim 4, wherein the barium zinc stabilizer is present in an amount of 2 to 3.5 parts.
6. The production method according to claim 4 or 5, wherein in the step S1, raw materials including the PVC, the plasticizer and the barium-zinc stabilizer are introduced into a mixer to be mixed.
7. The method according to claim 6, wherein the stirring rate of the mixing treatment is 1400 to 1500 rpm, the stirring time of the mixing treatment is 250 to 350 seconds, and the stirring temperature of the mixing treatment is 110 to 120 ℃.
8. The method according to claim 6, wherein in step S2, the raw material composition is introduced into a cooling mixer to be subjected to the cooling mixing treatment.
9. The production method according to claim 8, wherein a stirring rate of the cooling stirring process is lower than a stirring rate of the mixing process.
10. The production method according to claim 8, wherein the stirring rate of the cooling stirring treatment is 300 to 400 rpm, the stirring time of the stirring treatment is 400 to 500 seconds, and the stirring temperature of the stirring treatment is 55 to 65 ℃.
11. The method according to claim 1, wherein in the step S3, the temperature for plasticizing the cooled mixture is 165 to 175 ℃.
12. The method as recited in claim 1, wherein before the step S4, the method further includes a step of filtering the plasticized mixture.
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| CN102304256A (en) * | 2011-06-13 | 2012-01-04 | 宜兴市光辉包装材料有限公司 | PVC (Poly Vinyl Chloride) thermal contraction printing film |
| CN103849086A (en) * | 2014-03-06 | 2014-06-11 | 江苏大海塑料股份有限公司 | Environment-friendly high-resolution super transparent film |
| CN105237921A (en) * | 2015-12-01 | 2016-01-13 | 谢新 | Calligraphy and painting protecting mounting film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815580A (en) * | 1981-07-22 | 1983-01-28 | Toppan Printing Co Ltd | Surface protecting film |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304256A (en) * | 2011-06-13 | 2012-01-04 | 宜兴市光辉包装材料有限公司 | PVC (Poly Vinyl Chloride) thermal contraction printing film |
| CN103849086A (en) * | 2014-03-06 | 2014-06-11 | 江苏大海塑料股份有限公司 | Environment-friendly high-resolution super transparent film |
| CN105237921A (en) * | 2015-12-01 | 2016-01-13 | 谢新 | Calligraphy and painting protecting mounting film |
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