CN116080215A - Preparation method and application of co-extrusion type glitter film - Google Patents
Preparation method and application of co-extrusion type glitter film Download PDFInfo
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- CN116080215A CN116080215A CN202211581698.1A CN202211581698A CN116080215A CN 116080215 A CN116080215 A CN 116080215A CN 202211581698 A CN202211581698 A CN 202211581698A CN 116080215 A CN116080215 A CN 116080215A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
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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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/52—Measuring, controlling or regulating
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
- B29K2105/0032—Pigments, colouring agents or opacifiyng agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/554—Wear resistance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a preparation method and application of a co-extrusion type glitter film, and relates to the technical field of film materials. The invention provides a preparation method of a co-extrusion type glitter film, which comprises the steps of premixing glitter powder and plastic particles under a certain condition, controlling the addition amount of the glitter powder and a batch adding mode, obtaining the glitter film with more uniform glitter powder distribution, uniformly adhering the glitter powder on the plastic particles of an intermediate layer, further protecting the glitter powder in the intermediate layer by utilizing a surface layer after co-extrusion, effectively preventing the powder dropping condition of the glitter film, improving the friction resistance of the glitter film, and being widely applied to the packaging and decoration fields of cosmetics, building materials, window stickers, advertisement decoration and the like. In addition, the whole technical scheme of the invention effectively improves the production efficiency of the glitter film, and ensures that the glitter powder does not fall off and is uniformly distributed, and the linear speed of the production line can reach 80-110 m/min.
Description
Technical Field
The invention relates to the technical field of film materials, in particular to a preparation method and application of a co-extrusion type glitter film.
Background
The glitter film is a glitter effect product with wider application, has strong visual effect and can realize the effect of flashing and shining in sunlight. The golden onion film is suitable for offset printing, gravure printing, silk screen printing, special printing, gold stamping and other processing modes, and has been widely applied to the packaging and decoration markets of various industries such as cigarettes, toothpaste boxes, CD boxes, cosmetics, stationery, gift packaging lamp decoration, building materials, advertisement decoration, window stickers, self-adhesive, shoe industry, hair salon lamps and the like. The glitter film can be compounded with non-setting adhesive, various papers and the like, and is suitable for offset printing, intaglio printing, flexography, special printing and thermoprinting, thereby forming different glaubes.
The current production process of the golden onion film mainly comprises two main types: the first is to coat glitter powder on a printing surface in a spraying or transfer printing mode on the surface of a film, and realize a glitter effect through the refraction effect of the glitter powder; the second type is that the special template is rolled on the surface of the material to form frosted textures, and the pattern effect generated on the glitter film is different based on the difference of the template. However, these two kinds of production processes have disadvantages and shortcomings, and the first kind of process often has the disadvantage that the glitter powder falls off, so that the glitter powder on the produced glitter film falls off to influence the use. The second process generally needs to soften the film at a temperature of more than or equal to 130 ℃ and then calender, while the material with poor heat resistance is easy to deform in the heating process, so that the film has the problems of wrinkling, discoloration, aging and the like, therefore, the process is only suitable for the base film material with good heat resistance, and the line speed of a production line generally needs to be lower than 30m/min due to the need of fully pressurizing to obtain the embossed pattern, and the production efficiency is low. In addition, if the glitter film is formed by adding glitter powder between two films and pressing, it is also necessary to soften the formed mask at high temperature, which is not suitable for materials with poor heat resistance, and the glitter powder is liable to drift during the addition process, resulting in uneven distribution.
The prior art discloses a PE glitter film, which comprises a low-temperature heat-sealing glitter layer, a barrier layer and a corona layer, wherein three layers of polyethylene of the glitter layer, the barrier layer and the corona layer are co-extruded to form a base film through a co-extrusion process, the glitter layer on the base film is stamped by utilizing a glitter effect template, the glitter effect is achieved, the obtained glitter film has no risk of powder falling, and the heat resistance and the processability are good. However, the second type of process is actually adopted in the method, the production efficiency is still low, the golden onion layer is arranged on the outer layer, the friction resistance is insufficient, and the golden onion effect can be obviously weakened after the embossed surface formed by hot pressing is compounded with other materials through glue.
Disclosure of Invention
The invention provides a preparation method of a co-extrusion type glitter film, which aims to overcome the defect and the defect that the prior art cannot simultaneously give consideration to the powder falling problem, the friction resistance, the distribution uniformity and the production efficiency of the glitter film.
It is another object of the present invention to provide a co-extruded glitter film.
It is a further object of the present invention to provide the use of a co-extruded glitter film in the field of packaging decoration.
The above object of the present invention is achieved by the following technical scheme:
a preparation method of a co-extrusion type glitter film comprises the following steps:
s1, stirring and heating plastic particles, adding glitter powder under stirring when the temperature is 20-30 ℃ below the Vicat softening point of the plastic particles, cooling to a material temperature lower than 50 ℃, and stopping stirring to obtain a premix; wherein, the weight content of the golden onion powder in the plastic particles is 1-8%, the average is 3-5 batches and the golden onion powder is added in 40-80 min;
s2, taking the premix in the S1 as an intermediate layer, carrying out multilayer coextrusion, casting cooling or film blowing, stretching, shaping, and rolling to form the film with each surface layer of plastic particles.
The following description is needed:
in the step S1, the temperature is raised under the stirring condition, so that the plastic particles are heated uniformly, the surface of the plastic particles is sticky and is not in a molten state when the temperature is raised to 20-30 ℃ below the Vicat softening point of the plastic particles, the glitter powder is added under the stirring condition, so that the glitter powder and the plastic particles are fully mixed, meanwhile, the glitter powder is adhered to the plastic particles, excessive agglomeration of the glitter powder can be prevented by controlling the adding amount of the glitter powder and adding the glitter powder in batches, uneven distribution of the glitter powder is caused, and the appearance effect of the glitter film is poor, and the adding interval time of the glitter powder is 10-15 min. In order to enhance the premixing effect of the glitter powder and the plastic particles, the stirring speed in S1 is preferably 60 to 200rpm, more preferably 120rpm. Further, in order to improve the uniform distribution condition of the glitter powder, 3-4 batches of glitter powder are added in 45-60 min.
The friction resistance of the glitter film can be controlled by controlling the addition amount of the glitter powder in the step S1, and when the addition amount of the glitter powder is increased, part of glitter powder is agglomerated due to the increase of the glitter powder in the middle layer, so that the situation of film penetration easily occurs, and the friction resistance is also deteriorated.
In addition, in S1, the stirring is stopped after cooling to 50 ℃, and the stirring is stopped at a higher temperature, so that the surfaces of the plastic particles still have viscosity due to the higher temperature, and the agglomeration phenomenon is easy to occur.
Wherein, the extrusion temperature of S2 is selected according to different plastic particles under the conventional condition, and is specifically 190-230 ℃; the temperature of the cooling water in the casting cooling is 40-50 ℃.
The linear speed of the production line in the step S2 is 80-110 m/min, and the higher linear speed can improve the production efficiency, is beneficial to industrial production, but the production line speed cannot be too high, otherwise, the condition that the cash onion film is deformed is easy to appear.
In addition, since the shaped plastic film does not need to be softened and rolled at high temperature in the preparation process of the co-extrusion type glitter film, the preparation method of the co-extrusion type glitter film is suitable for materials with good heat resistance, such as PE and PVC materials with poor heat resistance, and the plastic particles in S1 and S2 are preferably one of PP, PE, PET, PVC.
Preferably, the weight percentage of the glitter powder in the S1 is 3-7%, more preferably 5-6%.
Preferably, the grain size of the glitter powder in the step S1 is 0.4-2 mm.
The glitter film has a poor glitter effect and only has a fog-like feel, the glitter powder is unfavorable for adhering to plastic particles when the particle size is too large, and the glitter film obtained finally is easy to have uneven surfaces and has poor friction resistance.
Preferably, the extrusion amount ratio of the middle layer to each surface layer in the S2 is (0.2-0.5): 1
S2, controlling the extrusion quantity proportion of the middle layer to each surface layer in the coextrusion process by a multilayer coextrusion technology, so that the middle layer can be further ensured to be completely wrapped in the middle, the thickness of the surface layer is ensured, and the friction resistance of the glitter powder is further improved; in addition, the phenomenon that the appearance effect of the glitter film is affected or the shining effect is poor due to the fact that the glitter powder content is too low due to the fact that the glitter powder content is too large and aggregation occurs in the melt extrusion process can be avoided.
More preferably, the extrusion amount ratio of the intermediate layer to each surface layer in S2 is (0.3 to 0.4): 1.
Preferably, the surface temperature of the casting roll cooled in the step S2 is 70 to 80 ℃.
Preferably, the surface temperature of the cooling roll cast-cooled in the step S2 is 40 to 60 ℃.
When the surface temperature of the cooling roller is too low, the cooling speed of the golden onion film in a viscous state after extrusion is higher when passing through the casting roller, so that the phenomenon of sticking the roller is easy to occur, the transparency of the film is easy to be reduced, the appearance is influenced, and the situation can be better avoided by controlling the surface temperature of the casting roller.
Preferably, the longitudinal stretching ratio in the step S2 stretching is (1.0-1.2): 1.
The longitudinal stretching ratio is the ratio of the linear speed of the rear roller to the linear speed of the front roller, the film passes through the front roller and then passes through the rear roller in the production process, when the speeds of the front roller and the rear roller are the same, the film has no longitudinal stretching effect in the production process, and when the speed of the rear roller is faster than that of the front roller, a longitudinal pulling force acts on the film due to the existence of a speed difference, so that the film is stretched and deformed. Because the glitter powder, the base film and the facial mask are in an incompatible state, slight stretching can generate slight hollowness among the glitter powder, the base film and the facial mask, so that the refraction degree is improved, and the shining effect of the glitter powder can be enhanced by moderate stretching.
Preferably, the surface temperature of the shaping roller in the step S2 cooling shaping is 20-30 ℃.
The shaping temperature is controlled within the range of 20-30 ℃, so that the golden onion film can be shaped better, and the golden onion film is prevented from shrinking.
In addition, in the preparation method S1 of the co-extrusion type glitter film, the color of the glitter film can be adjusted by adding the color master batch and the plastic particles together and stirring.
The coextrusion process is not limited to three-layer coextrusion, and five-layer or seven-layer coextrusion can achieve corresponding effects.
The invention also specifically protects the glitter film prepared by the preparation method of the co-extrusion glitter film.
In the co-extrusion type glitter film, the glitter powder is pre-mixed with the plastic particles of the middle layer and then co-extruded with the surface layers, so that the glitter powder is firmly adhered in the middle layer, and the middle layer is coated by the surface layers through the co-extrusion process, so that the glitter powder is further protected, and the glitter film has the characteristic that the glitter powder is not easy to fall off, has good friction resistance, and can be widely applied to the packaging and decoration fields of cosmetics, building materials, window stickers, advertisement decoration and the like.
The invention particularly protects the application of the co-extrusion type glitter film in the packaging and decoration fields of cosmetics, building materials, window stickers, advertisement decorations and the like.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a preparation method of a co-extrusion type glitter film, which comprises the steps of premixing glitter powder and plastic particles under a certain condition, controlling the addition amount of the glitter powder and a batch adding mode, obtaining the glitter film with more uniform glitter powder distribution, uniformly adhering the glitter powder on the plastic particles of an intermediate layer, further protecting the glitter powder in the intermediate layer by utilizing a surface layer after co-extrusion, effectively preventing the powder dropping condition of the glitter film, improving the friction resistance of the glitter film, and being widely applied to the packaging and decoration fields of cosmetics, building materials, window stickers, advertisement decoration and the like.
In addition, the whole technical scheme of the invention effectively improves the production efficiency of the glitter film, and ensures that the glitter powder does not fall off and is uniformly distributed, and the linear speed of the production line can reach 80-110 m/min.
Detailed Description
The invention will be further described with reference to the following specific embodiments, but the examples are not intended to limit the invention in any way. Raw materials reagents used in the examples of the present invention are conventionally purchased raw materials reagents unless otherwise specified.
Example 1
A preparation method of a co-extrusion type glitter film comprises the following steps:
s1, adding PE particles into a stirring tank, stirring and heating, adding glitter powder under stirring when the temperature is increased to 80 ℃, cooling to a material temperature lower than 50 ℃, and stopping stirring to obtain a premix; wherein, the weight content of the golden onion powder in the plastic particles is 5%, the golden onion powder is added in 3 batches within 40min, the adding interval is 15min each time, and the stirring speed is 120rpm.
S2, taking the premix in the S1 as a middle layer, carrying out three-layer coextrusion, casting cooling, stretching, shaping and rolling to form a film with each surface layer plastic particle; wherein the extrusion quantity ratio of the middle layer to each surface layer is 0.3:1, the extrusion temperature is 230 ℃, the production line speed is 90 m/min, and the longitudinal stretching ratio is 1.1:1; the temperature of cooling water in casting cooling is 50 ℃, the surface temperature of a casting roller is 75 ℃, and the surface temperature of the cooling roller is 50 ℃; the surface temperature of the shaping roller in cooling shaping is 30 ℃.
Examples 2 to 14
A method for preparing a co-extrusion type glitter film is carried out by the same steps as in example 1, except for the differences shown in Table 1.
TABLE 1 preparation Condition parameter Table for examples 1-14
Comparative example 1
A preparation method of a co-extrusion type glitter film comprises the same steps as in example 1, wherein the difference is that the weight percentage of glitter powder is 10%.
Comparative example 2
A method for preparing a co-extrusion type glitter film comprises the same steps as in example 1, except that glitter powder is added to plastic particles at one time.
Performance test:
(1) Evaluation of appearance and sparkling effect of glitter film
The evaluation mode of the appearance of the golden onion film is as follows: three 20 cm. Times.20 cm samples were cut, and observed with naked eyes using a white paper sheet as a background and natural light or a fluorescent lamp as a light source, and the evaluation criteria are shown in Table 2.
TABLE 2 golden onion film appearance effect scoring criteria
The appearance of the glitter films of examples 1 to 14 was evaluated by visual inspection according to a scoring standard set in advance, and the results are shown in table 3.
And (3) flash effect evaluation: the score was 1 to 10 points by visual evaluation, the better the visual shining effect, the higher the score, and the score of the corresponding example was obtained by taking an average value after scoring by 5 persons independently observing, and the results are shown in table 3.
TABLE 3 evaluation of appearance of golden onion film
As can be seen from the evaluation results of Table 3, in the examples 1 to 14 of the present invention, only 1 glitter powder block with a diameter of 1cm or more was present in the glitter film of example 13, while the other prepared glitter films had an appearance effect score of 5 minutes or more, i.e., no glitter powder block with a diameter of 1cm or more was present in the glitter film, and the glitter powder distribution was relatively uniform; as can be seen from comparative examples 3, 6, 7 and examples 1, 12, 13, the glitter effect increases with increasing extrusion ratio of the intermediate layer, because when the quality of the produced glitter film is the same, the higher the extrusion ratio of the intermediate layer, the more glitter powder content in the glitter film is, which is advantageous for improving the glitter effect, but as can be seen from examples 3, 6, 7 and examples 1, 12, 13, the increase in the ratio of the intermediate layer also results in poor appearance effect, because the content of glitter powder increases, the more glitter powder content is in a molten state at the time of extrusion, and aggregation occurs easily during extrusion; in example 8, the glitter effect was not obvious due to the small size of the glitter particles; in example 14, the glitter effect was not obvious due to the small amount of glitter powder added; in addition, in combination with examples 1 to 14, it is seen that the addition amount of the glitter powder, the extrusion ratio of the intermediate layer to each surface layer, and the particle size of the glitter powder each affect the appearance and the glitter effect of the glitter film, and in order to obtain the glitter film with the best effect, the effects of the three should be comprehensively considered; in comparative example 1, the addition amount of the glitter powder was too large, agglomeration occurred during the melt extrusion, and the appearance effect was poor; the glitter powder of comparative example 2 was not added in portions and the uniformity of distribution was also poor.
(2) Glitter film powder-falling test
Cutting the prepared glitter film to obtain 100mm multiplied by 100mm pieces, pasting the pieces on a flat table, pasting a 3M transparent adhesive tape, tearing the 3M transparent adhesive tape after 3 minutes, and observing the area percentage of glitter powder adhered by the 3M transparent adhesive tape so as to evaluate the dropping condition of the powder.
(3) Rubbing resistance test of glitter film
And cutting the prepared glitter film into pieces with the length of 100mm multiplied by 100mm, rubbing the pieces on 3000-mesh sand paper back and forth for five times, pasting the pieces on a flat table top, pasting a 3M transparent adhesive tape, tearing the 3M transparent adhesive tape after 3 minutes, observing the area percentage of glitter powder adhered by the 3M transparent adhesive tape, and evaluating the friction resistance by evaluating the condition of dropping of the powder.
TABLE 4 glitter film powder loss conditions
As shown in Table 4, the co-extrusion process is adopted to prepare the glitter films in examples 1-14 and comparative examples 1-2, so that the powder falling problem is greatly improved, and the powder falling rate after friction in examples 2, 6, 7, 9 and 13 is more than 10%, because the addition amount of glitter powder is larger, the proportion of the middle layer is larger, the content of glitter powder is higher or the particle size of glitter powder is larger in the corresponding preparation process of the glitter film, the problems that local glitter powder is larger in volume and the glitter film is broken in the friction process easily occur, and the friction resistance of the glitter film is reduced are caused; in comparative example 2, since the glitter powder is added to the plastic particles at one time, severe agglomeration occurs, the glitter powder has a large local volume, and the glitter film is easily broken through in the friction process, so that the powder is dropped; in comparative example 1, the powder falling after friction was only 10%, but the data in Table 3 shows that the golden onion film has poor appearance effect, and 5 or more golden onion powder large color lumps (color lump diameter is not less than 1 cm) which are unevenly dispersed are visible to naked eyes, and has no practical application value.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The preparation method of the co-extrusion type glitter film is characterized by comprising the following steps of:
s1, stirring and heating plastic particles, adding glitter powder under stirring when the temperature is 20-30 ℃ below the Vicat softening point of the plastic particles, cooling to a material temperature lower than 50 ℃, and stopping stirring to obtain a premix; wherein, the weight content of the golden onion powder in the plastic particles is 1-8%, the average is 3-5 batches and the golden onion powder is added in 40-80 min;
s2, taking the premix in the S1 as an intermediate layer, carrying out multilayer coextrusion, casting cooling or film blowing, stretching, shaping, and rolling to form the film with each surface layer of plastic particles.
2. The preparation method of claim 1, wherein the weight percentage of the glitter powder in the S1 is 3-7%.
3. The method of claim 1, wherein the glitter powder in step S1 has a particle size of 0.4 to 2mm.
4. The process according to claim 1, wherein the ratio of the extrusion amount of the intermediate layer to the extrusion amount of each of the face layers in S2 is 1 (0.2 to 0.5).
5. The production method as claimed in claim 1, wherein the surface temperature of the casting roll cooled in the step S2 is 70 to 80 ℃.
6. The production method as claimed in claim 1, wherein the surface temperature of the casting-cooled cooling roll in the step S2 is 40 to 60 ℃.
7. The process according to claim 1, wherein the S2 stretching has a longitudinal stretching ratio of 1.0 to 1.2.
8. The process according to claim 1, wherein the surface temperature of the setting roller in the cooling setting in the step S2 is 20 to 30 ℃.
9. A glitter film prepared by the method of any one of claims 1 to 8.
10. Use of the glitter film of claim 9 in the packaging and decorative fields of cosmetics, building materials, window stickers, advertisement decorations and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211581698.1A CN116080215B (en) | 2022-12-09 | 2022-12-09 | Preparation method and application of co-extrusion type glitter film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211581698.1A CN116080215B (en) | 2022-12-09 | 2022-12-09 | Preparation method and application of co-extrusion type glitter film |
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| EP1047537A2 (en) * | 1998-01-13 | 2000-11-02 | Minnesota Mining And Manufacturing Company | Process for making multilayer optical films |
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| WO2010022609A1 (en) * | 2008-08-29 | 2010-03-04 | Chen Wei | A paper transfer for partitions of glass and decoration of glass or mirror’s surface and making technology thereof |
| DE102010001971A1 (en) * | 2010-02-16 | 2011-08-18 | Sigmund Lindner GmbH, 95485 | Process for the production of glitter |
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| CN107244053A (en) * | 2017-06-22 | 2017-10-13 | 东莞市开源塑化科技有限公司 | The production method and obtained film of a kind of Environment-friendlygold gold green onion film |
| CN206678511U (en) * | 2017-03-20 | 2017-11-28 | 东莞市开源塑化科技有限公司 | A kind of illusion-colour laminated film |
| CN107828145A (en) * | 2017-10-30 | 2018-03-23 | 佛山威明塑胶有限公司 | One kind dodges silver-colored PVC film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5490356A (en) * | 1977-12-17 | 1979-07-18 | Pennekamp & Huesker Kg | Method of making semiiproduct of plastics |
| US4944818A (en) * | 1987-03-31 | 1990-07-31 | Dybsky John M | Composite roofing substrate panel |
| EP1047537A2 (en) * | 1998-01-13 | 2000-11-02 | Minnesota Mining And Manufacturing Company | Process for making multilayer optical films |
| US20010031352A1 (en) * | 1998-07-08 | 2001-10-18 | Trinity Industrial Corporation | Surface decorated article and decoration method thereof |
| WO2010022609A1 (en) * | 2008-08-29 | 2010-03-04 | Chen Wei | A paper transfer for partitions of glass and decoration of glass or mirror’s surface and making technology thereof |
| DE102010001971A1 (en) * | 2010-02-16 | 2011-08-18 | Sigmund Lindner GmbH, 95485 | Process for the production of glitter |
| WO2012031462A1 (en) * | 2010-09-10 | 2012-03-15 | 广州新莱福磁电有限公司 | Flexible magnetic plastic film with added recycled plastics |
| CN206678511U (en) * | 2017-03-20 | 2017-11-28 | 东莞市开源塑化科技有限公司 | A kind of illusion-colour laminated film |
| CN107244053A (en) * | 2017-06-22 | 2017-10-13 | 东莞市开源塑化科技有限公司 | The production method and obtained film of a kind of Environment-friendlygold gold green onion film |
| CN107828145A (en) * | 2017-10-30 | 2018-03-23 | 佛山威明塑胶有限公司 | One kind dodges silver-colored PVC film and preparation method thereof |
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| CN116080215B (en) | 2023-10-20 |
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