阅读说明：本技术 一种水性可降解金葱粉的制作工艺 (Preparation process of water-based degradable glitter powder ) 是由 游金龙 于 2019-12-05 设计创作，主要内容包括：本发明公开一种水性可降解金葱粉的制作工艺,其中,包括如下步骤：①取pla透明膜层的A面进行电晕处理,形成A面电晕层；②对A面电晕层进行真空蒸镀铝工序,使其表面形成镀铝层；③对pla透明膜层的B面进行电晕处理,形成B面电晕层；④配制水性可降解聚氨酯共聚物混合液,将水性可降解聚氨酯共聚物混合液印刷在A面电晕层以形成A面印刷层,并印刷在A面电晕层以形成B面印刷层,随后经过干燥收卷形成pla半成品薄膜；⑤对pla半成品薄膜进行熟化工序；⑥将经过熟化的pla半成品薄膜进行分切工序；⑦将经过分切的pla半成品薄膜先进行切粉或者冲切工序,最终形成金葱粉。本案解决现有工艺耗能高、废弃成本高以及安全性能不足的缺陷。(The invention discloses a manufacturing process of water-based degradable glitter powder, which comprises the following steps of ① carrying out corona treatment on the surface A of a pla transparent film layer to form a surface A corona layer, ② carrying out a vacuum aluminum evaporation plating process on the surface A corona layer to form an aluminum plated layer on the surface A corona layer, ③ carrying out corona treatment on the surface B of the pla transparent film layer to form a surface B corona layer, ④ preparing a water-based degradable polyurethane copolymer mixed solution, printing the water-based degradable polyurethane copolymer mixed solution on the surface A corona layer to form a surface A printing layer, printing the surface A corona layer to form a surface B printing layer, then drying and rolling to form a pla semi-finished film, ⑤ carrying out a curing process on the pla semi-finished film, ⑥ carrying out a cutting process on the cured pla semi-finished film, ⑦ carrying out a powder cutting or punching process on the cut pla semi-finished film to finally form the glitter powder, and the defects of high energy consumption, high waste cost and insufficient safety performance of the existing technology are solved.)

1. The preparation process of the water-based degradable glitter powder is characterized by comprising the following steps:

① corona treatment is carried out on the surface A of the pla transparent film layer to form a surface A corona layer;

② performing vacuum aluminum deposition process on the corona layer on the surface A to form an aluminum coating on the surface;

③, carrying out corona treatment on the B surface of the pla transparent film layer to form a B surface corona layer;

④ preparing aqueous degradable polyurethane copolymer mixed solution, printing the aqueous degradable polyurethane copolymer mixed solution on the A-surface corona layer to form an A-surface printing layer, printing the aqueous degradable polyurethane copolymer mixed solution on the A-surface corona layer to form a B-surface printing layer, and drying and rolling to form a pla semi-finished film;

⑤ curing the pla semi-finished film;

⑥ slitting the cured pla semi-finished film;

⑦ cutting the cut pla semi-finished film into powder or punching, sieving, and weighing to obtain glitter powder.

2. The process for preparing an aqueous degradable glitter powder according to claim 1, wherein in the step ④, the aqueous degradable polyurethane copolymer mixture comprises 65% by weight of an aqueous degradable polyurethane copolymer, 34% by weight of water and 1% by weight of an aqueous silicone lubricant.

3. The process for preparing the aqueous degradable glitter powder according to claim 2, wherein the step ④ is carried out by the following steps:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed water in the stirring process;

4) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

4. The process for preparing the aqueous degradable glitter powder of claim 1, wherein in the step ④, the aqueous degradable polyurethane copolymer mixture comprises 64% by weight of aqueous degradable polyurethane copolymer, 35% by weight of noctilucent powder and 1% by weight of aqueous silicone lubricant.

5. The process for preparing the aqueous degradable glitter powder according to claim 4, wherein the step ④ is carried out by the specific steps of preparing the aqueous degradable polyurethane copolymer mixture:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed noctilucent powder in the stirring process;

4) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

6. The process for preparing the aqueous degradable glitter powder according to claim 1, wherein in the step ④, the aqueous degradable polyurethane copolymer mixture comprises 64% by weight of an aqueous degradable polyurethane copolymer, 33% by weight of water, 1% by weight of an aqueous silicone lubricant, and 2% by weight of an aqueous nanopigment.

7. The process for preparing the aqueous degradable glitter powder according to claim 6, wherein the step ④ of preparing the aqueous degradable polyurethane copolymer mixture comprises the following specific steps:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed water in the stirring process;

4) after 5-10 minutes, continuously and slowly adding the weighed water-based nano pigment;

5) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

8. The preparation process of the water-based degradable glitter powder according to claim 1, wherein in the step ④, the glitter powder is printed by using a gravure printing machine at a production speed of 50-100 m/min and at a temperature of 40-100 ℃, and dried and rolled by using an oven at a temperature of 40-100 ℃.

9. The manufacturing process of the aqueous degradable glitter powder according to claim 1, wherein the dyne values of the corona layer on the surface A and the corona layer on the surface B in the steps ① and ③ are more than or equal to 40 mN/m.

10. The process for preparing the aqueous degradable glitter powder according to claim 1, wherein in the step ⑤, the curing temperature is 40-70 ℃ and the curing temperature is 24-48 hours.

Technical Field

The invention relates to the field of processing of film materials, in particular to a preparation process of water-based degradable glitter powder.

Background

The glitter powder is also called glitter sheet and glitter powder, is a common decoration widely used for clothes, shoes, caps, headwear and the like, and the existing glitter powder mainly comprises a PET polyester film, amino resin and epoxy resin, and firstly, the materials are materials which are difficult to degrade and have large pollution, so that the glitter powder has the defects of high energy consumption (the resin reaction needs high temperature of 200 ℃), high waste recovery cost (various colors and complicated recovery process), high pollution in the production process (organic solvent gas emission), high safety in the production process (solvent gas harm at high temperature) and the like in the production process.

In view of the above, the applicant has made an intensive study to solve the above problems and has made the present invention.

Disclosure of Invention

The invention mainly aims to provide a preparation process of water-based degradable glitter powder, which solves the defects of high energy consumption, high abandonment cost and insufficient safety performance of the existing process.

In order to achieve the above purpose, the solution of the invention is:

the preparation process of the water-based degradable glitter powder comprises the following steps:

① corona treatment is carried out on the surface A of the pla transparent film layer to form a surface A corona layer;

② performing vacuum aluminum deposition process on the corona layer on the surface A to form an aluminum coating on the surface;

③, carrying out corona treatment on the B surface of the pla transparent film layer to form a B surface corona layer;

④ preparing aqueous degradable polyurethane copolymer mixed solution, printing the aqueous degradable polyurethane copolymer mixed solution on the A-surface corona layer to form an A-surface printing layer, printing the aqueous degradable polyurethane copolymer mixed solution on the A-surface corona layer to form a B-surface printing layer, and drying and rolling to form a pla semi-finished film;

⑤ curing the pla semi-finished film;

⑥ slitting the cured pla semi-finished film;

⑦ cutting the cut pla semi-finished film into powder or punching, sieving, and weighing to obtain glitter powder.

Further, in the step ④, the aqueous degradable polyurethane copolymer mixture solution includes 65% by weight of an aqueous degradable polyurethane copolymer, 34% by weight of water, and 1% by weight of an aqueous silicone slipping agent.

Further, in the step ④, the specific steps of preparing the aqueous degradable polyurethane copolymer mixture solution are as follows:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed water in the stirring process;

4) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

Further, in the step ④, the aqueous degradable polyurethane copolymer mixture solution includes 64% by weight of an aqueous degradable polyurethane copolymer, 35% by weight of luminescent powder, and 1% by weight of an aqueous silicone slipping agent.

Further, in the step ④, the specific steps of preparing the aqueous degradable polyurethane copolymer mixture solution are as follows:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed noctilucent powder in the stirring process;

4) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

Further, in the step ④, the aqueous degradable polyurethane copolymer mixture solution includes 64% by weight of an aqueous degradable polyurethane copolymer, 33% by weight of water, 1% by weight of an aqueous silicone slipping agent, and 2% by weight of an aqueous nanopigment.

Further, in the step ④, the specific steps of preparing the aqueous degradable polyurethane copolymer mixture solution are as follows:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed water in the stirring process;

4) after 5-10 minutes, continuously and slowly adding the weighed water-based nano pigment;

5) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

Further, in the step ④, printing is performed at a production speed of 50-100 m/min and a temperature of 40-100 ℃ by using a gravure printing machine, and drying and rolling are performed at a temperature of 40-100 ℃ by using an oven.

Further, in the steps ① and ③, the dyne value of the corona layer on the surface A and the dyne value of the corona layer on the surface B are more than or equal to 40 mN/m.

Further, in the step ⑤, the curing temperature is 40-70 ℃, and the curing temperature is 24-48 hours.

After the structure is adopted, the manufacturing process of the waterborne degradable glitter powder has the beneficial effects that the pla and the waterborne degradable polyurethane copolymer are used as main materials, the two materials have good biodegradability and can be completely degraded by microorganisms in the nature under specific conditions after being used, carbon dioxide and water are finally generated, the environment is not polluted, and the manufacturing process is very beneficial to protecting the environment; and all use the aqueous material, avoid the organic solvent to the environment and worker's health to examine the danger in the production run; in addition, the gravure printing temperature is lower (the traditional glitter powder gravure printing temperature is about 200 ℃, and the gravure printing temperature is about 40-100 ℃), the use of electric energy is reduced, and the effects of energy conservation and emission reduction are achieved. Therefore, all the materials and the production process belong to green environmental protection, so that the produced glitter powder can be applied to medical treatment, home decoration, artware, children toys, cosmetics, clothes and the like, the application range and the field of the product are increased, and the glitter powder has good future market demand.

Drawings

FIG. 1 is a schematic cross-sectional view of the water-based degradable glitter powder of the present invention.

In the figure:

printing layer-1 on surface A; plating an aluminum layer-2; corona treatment layer-3 of surface A; pla transparent film layer-4; corona treatment layer-5 on surface B; and B surface printing layer-6.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1, the preparation process of the aqueous degradable glitter powder comprises an a surface printing layer 1, an aluminum plating layer 2, an a surface corona treatment layer 3, a pla transparent film layer 4, a B surface corona treatment layer 5 and a B surface printing layer 6 which are sequentially stacked, wherein the a surface printing layer 1 and the B surface printing layer 6 are prepared from an aqueous degradable polyurethane copolymer mixed solution. The scheme specifically comprises the following steps:

① corona treatment is carried out on the surface A of the pla transparent film layer 4 to form a surface A corona layer, and the pla transparent film layer 4 has good transparency;

②, performing a vacuum aluminum evaporation plating process on the corona layer on the surface A to form an aluminum plated layer 2 on the surface, specifically, heating and plating the aluminum material on the pla transparent film layer 4 in a vacuum environment, and evaporating or subliming the aluminum material in vacuum to precipitate the aluminum material on the surface of the pla transparent film layer 4. in the embodiment, the aluminum plated layer 2 has a thickness of 400-500 angstroms, so that the pla transparent film layer 4 has good metallic luster;

③, carrying out corona treatment on the B surface of the pla transparent film layer 4 to form a B surface corona layer;

④, preparing a water-based degradable polyurethane copolymer mixed solution, printing the water-based degradable polyurethane copolymer mixed solution on an A-surface corona layer to form an A-surface printing layer 1, printing the A-surface corona layer to form a B-surface printing layer 6, and then drying and rolling to form a pla semi-finished film, wherein the printing is carried out at a production speed of 50-100 m/min and at a temperature of 40-100 ℃ by using a gravure printing machine, the drying and rolling are carried out at a temperature of 40-100 ℃ by using an oven, and the thicknesses of the A-surface printing layer 1 and the B-surface printing layer 6 are 1-3 microns;

⑤ curing the pla semi-finished film;

⑥, performing a slitting process on the cured pla semi-finished film, wherein the normal width of the pla semi-finished film is 1000-1650 mm by a slitting machine, and the width after slitting by the slitting machine is 80-140 mm, so as to slit the long-wide pla semi-finished film into narrow widths for later use;

⑦ cutting the cut pla semi-finished film into powder or punching, sieving, and weighing to obtain glitter powder.

pla, also known as polylactic acid, is a novel bio-based and renewable biodegradable material, and is made from starch raw materials provided by renewable plant resources (such as corn, cassava, and the like). The starch raw material is saccharified to obtain glucose, the glucose and certain strains are fermented to prepare high-purity lactic acid, and the polylactic acid with certain molecular weight is synthesized by a chemical synthesis method. The material has good biodegradability, can be completely degraded by microorganisms in the nature under specific conditions after being used, finally generates carbon dioxide and water, does not pollute the environment, is very beneficial to environmental protection, and is an existing environment-friendly material.

The water-based degradable polyurethane copolymer is a novel polyurethane system using water as a dispersion medium instead of an organic solvent, and is also called water-dispersed polyurethane, water-based polyurethane or water-based pu, and is also an existing degradable material.

The pla and the waterborne degradable polyurethane copolymer are used as main materials, and the two materials have good biodegradability, can be completely degraded by microorganisms in nature under specific conditions after being used, finally generate carbon dioxide and water, do not pollute the environment, and are very favorable for protecting the environment; and all use the aqueous material, avoid the organic solvent to the environment and worker's health to examine the danger in the production run; in addition, the gravure printing temperature is lower (the traditional glitter powder gravure printing temperature is about 200 ℃, and the gravure printing temperature is about 40-100 ℃), the use of electric energy is reduced, and the effects of energy conservation and emission reduction are achieved. Therefore, all the materials and the production process belong to green environmental protection, so that the produced glitter powder can be applied to medical treatment, home decoration, artware, children toys, cosmetics, clothes and the like, the application range and the field of the product are increased, and the glitter powder has good future market demand.

The aqueous degradable polyurethane copolymer mixed solution of the present invention has three embodiments,

in a first embodiment, in the step ④, the aqueous degradable polyurethane copolymer mixture solution includes 65% by weight of an aqueous degradable polyurethane copolymer, 34% by weight of water, and 1% by weight of an aqueous silicone slipping agent.

In this embodiment, in the step ④, the specific steps of preparing the aqueous degradable polyurethane copolymer mixture solution are as follows:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed water (reverse osmosis filtered water) during stirring;

4) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

The silver aqueous degradable glitter powder can be prepared by adopting the aqueous degradable polyurethane copolymer mixed solution.

In a second embodiment, in step ④, the aqueous degradable polyurethane copolymer mixture solution includes 64% by weight of an aqueous degradable polyurethane copolymer, 35% by weight of a luminescent powder, and 1% by weight of an aqueous silicone lubricant.

In this embodiment, in the step ④, the specific steps of preparing the aqueous degradable polyurethane copolymer mixture solution are as follows:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed noctilucent powder in the stirring process;

4) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

In this embodiment, the noctilucent powder can be dispersed by using the waterborne degradable polyurethane copolymer, so that the viscosity of the mixed liquid of the waterborne degradable polyurethane copolymer is stabilized, and the smooth printing process is ensured. Adopt the waterborne degradable polyurethane copolymer mixed solution of this embodiment can make the degradable gold shallot powder of night light waterborne, has the night light effect at night, and is more beautiful.

As a third example, in the step ④, the water-based degradable polyurethane copolymer mixture includes 64% by weight of a water-based degradable polyurethane copolymer, 33% by weight of water, 1% by weight of a water-based silicone slipping agent, and 2% by weight of a water-based nanopigment.

In this embodiment, in the step ④, the specific steps of preparing the aqueous degradable polyurethane copolymer mixture solution are as follows:

1) placing the weighed waterborne degradable polyurethane copolymer in a foam bucket;

2) placing the material soaking barrel under a stirrer, and starting the stirrer to rotate at about 300-600 RPM;

3) slowly adding weighed water in the stirring process;

4) after 5-10 minutes, continuously and slowly adding the weighed water-based nano pigment;

5) and after 5-10 minutes, continuously and slowly adding the weighed water-based organic silicon slipping agent.

The colored aqueous degradable glitter powder can be prepared by adopting the aqueous degradable polyurethane copolymer mixed solution of the embodiment, so that the glitter powder has brighter, richer and more beautiful color.

The pla transparent film layer 4 has a smooth surface, and in order to increase its roughness, it needs to be corona-treated,

the principle of corona treatment is that high-frequency high-voltage is utilized to carry out corona discharge on the surface of the treated plastic (high-frequency alternating voltage reaches 5000-. In the scheme, the power of corona treatment is 4-12 KW, the speed is 80-150M/min, the dyne values of the corona layer on the surface A and the corona layer on the surface B are more than or equal to 40mN/M, and the printing of the aqueous degradable polyurethane copolymer mixed liquid is facilitated.

Preferably, in the step ⑤, the pla semi-finished film is put into a curing chamber for curing at a temperature of 40-70 ℃ for 24-48 hours, which is beneficial to slow down the chemical activity of the pla transparent film 4 and the waterborne degradable polyurethane copolymer after high temperature printing and enhance the bonding strength between the pla transparent film 4 and the resin.

In the step ⑦, the pla semi-finished film can be formed into regular strips through the powder cutting process, the pla semi-finished film is punched through the punching process, specifically, a punching machine is adopted to obtain various special-shaped bright sheets, and glitter powder with star, circle, water drop, diamond and moon shapes can be formed, and the glitter powder is 1/4-1/1000 inches in specification.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.