CN112477224A - Spraying-free electric toothbrush and preparation method of toothbrush sterilizer - Google Patents
Spraying-free electric toothbrush and preparation method of toothbrush sterilizer Download PDFInfo
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- CN112477224A CN112477224A CN202011231062.5A CN202011231062A CN112477224A CN 112477224 A CN112477224 A CN 112477224A CN 202011231062 A CN202011231062 A CN 202011231062A CN 112477224 A CN112477224 A CN 112477224A
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- spraying
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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
- B29D99/00—Subject matter not provided for in other groups of this subclass
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
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- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Mechanical Engineering (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Brushes (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation method of a spraying-free electric toothbrush and a toothbrush sterilizer, which comprises the following steps: 1) preparing raw materials; 2) spraying-free coloring; 3) grain extraction; 4) drying the granules; 5) injection molding; 6) blow molding; 7) cooling and demolding; 8) silk-screen printing; 9) and (7) packaging and warehousing. The invention belongs to the technical field of preparation of electric toothbrushes and toothbrush disinfectors, and particularly provides a spraying-free electric toothbrush and a preparation method of a toothbrush disinfector, which have the advantages of simple process, diversified colors, durable appearance and color, capability of quickly shortening delivery cycle and realization of high product surface gloss and color close to the spraying effect.
Description
Technical Field
The invention belongs to the technical field of preparation of electric toothbrushes and toothbrush disinfectors, and particularly relates to a spraying-free electric toothbrush and a preparation method of the toothbrush disinfector.
Background
At present, the basic processes of the shell plastic parts of the electric toothbrushes and toothbrush disinfectors in the market are as follows: plastic injection molding, oil spraying, drying, laser engraving and silk printing, and has the advantages that the color of a new product can be diversified, and the obvious defects of the new product are that the paint is not durable and is easy to fall off; secondly, the processing technology is complex and tedious, the reject ratio is high, and the cost is relatively high.
Disclosure of Invention
In order to solve the existing problems, the invention provides the preparation method of the spraying-free electric toothbrush and the toothbrush sterilizer, which have the advantages of simple process, diversified colors, durable appearance and color, capability of quickly shortening the delivery period and realizing the high surface gloss and the color close to the spraying effect of the product.
The technical scheme adopted by the invention is as follows: the invention relates to a preparation method of a spraying-free electric toothbrush and a toothbrush sterilizer, which comprises the following steps:
1) preparing raw materials: weighing 90-100 parts by weight of PC resin, 5-7 parts by weight of spraying-free pigment, 1-3 parts by weight of pearlescent additive, 0.1-1 part by weight of auxiliary agent and 0.1-0.5 part by weight of antioxidant;
2) free of spraying and coloring: taking the raw materials according to the proportion and putting the raw materials into a high-speed blender to be uniformly mixed to obtain a spraying-free material;
3) grain extraction: extruding the spraying-free material obtained in the step 2) from a double-screw extruder, cooling and granulating in a granulator to obtain granules;
4) and (3) drying the granules: drying the granules obtained in the step 3) to obtain dried granules, wherein the drying temperature of the granules is 110-;
5) injection molding: heating the rapid injection molding machine and the injection mold, setting the barrel temperature of the rapid injection molding machine to be 270-295 ℃, the front mold to be 120-160 ℃, and the rear mold to be 80 ℃, putting the dried granules obtained in the step 4) into a spiral material conveying machine, conveying the granules into the rapid injection molding machine through the spiral material conveying machine for glue melting, and injecting the granules into a mold cavity through a hot flow channel in a high-pressure mode to form a parison;
6) blow molding: attaching the parison to a mandrel, moving the parison into a blow mold, and blowing air into the parison through the mandrel to expand the parison until the parison is attached to the inner wall of the blow mold;
7) cooling and demolding: keeping pressure and cooling the parison to shape the parison, opening the mold, and demoulding and taking out the finished product;
8) and (3) silk-screen printing: printing a pattern on the surface of the finished product part obtained in the step 7) by adopting a silk-screen printing operation mode, and curing the pattern after printing the pattern by using the ink to obtain a silk-screen product finished product, wherein the curing temperature is 60-70 ℃, and the curing time is 45-60 minutes;
9) packaging and warehousing: directly packaging the finished product part obtained in the step 7) and then registering and warehousing, or packaging the silk-screen product finished product obtained in the step 8) and then registering and warehousing.
Further, the temperature in the high-speed blender in the step 2) is normal temperature, and the high-speed mixing time is 6-9 min.
Further, injecting the molten raw materials into a mold in three sections by the rapid injection molding machine in the step 5) for injection molding, wherein the total injection molding time is 10s, the first section pressure is 100-120 MPa, and the injection speed is 55 +/-5 mm/s; the second-stage pressure is 70-100 MPa, and the injection speed is 40 +/-5 mm/s; the pressure of the third section is 60-70 MPa, and the injection speed is 20 +/-5 mm/s.
Further, in the pressure maintaining and cooling process in the step 6), the mold is kept at 55MPa for 20s +/-5 s, and the cooling time is 20s +/-5 s.
Further, the extrusion temperature of the twin-screw extruder in the step 3) is 210-.
Further, the spraying-free pigment in the step 1) is one or more of aluminum powder, copper powder, gold powder, silver powder, zinc powder, tin powder, iron powder and nickel powder, and the antioxidant in the step 1) is one or more of hindered phenol antioxidant, phosphite antioxidant, amine antioxidant, sulfur-containing antioxidant or metal salt antioxidant; the auxiliary agent in the step 1) is one or more than two of a silicone lubricant, an amide lubricant, a stearic acid lubricant, a polyolefin lubricant or an ester lubricant.
The invention with the structure has the following beneficial effects: the preparation method of the spraying-free electric toothbrush and the toothbrush sterilizer adopts a brand-new spraying-free technology to simplify the spraying, drying and laser etching processes; the spraying effect that the surface of the product is high in gloss and the color of the product is close to that of the spraying effect is realized, the process is simple, the color is diversified, the appearance color is durable, and the delivery period is shortened rapidly.
Detailed Description
The present invention will be described in further detail.
Embodiment 1, a method for preparing a spray-free electric toothbrush and a toothbrush sterilizer, comprising the following steps:
1) preparing raw materials: weighing 90 parts by weight of PC resin, 5 parts by weight of spraying-free pigment, 1 part by weight of pearlescent additive, 0.1 part by weight of auxiliary agent and 0.1 part by weight of antioxidant;
2) free of spraying and coloring: taking the raw materials according to the proportion and putting the raw materials into a high-speed blender to be uniformly mixed to obtain a spraying-free material;
3) grain extraction: extruding the spraying-free material obtained in the step 2) from a double-screw extruder, cooling and granulating in a granulator to obtain granules;
4) and (3) drying the granules: drying the granules obtained in the step 3) to obtain dried granules, wherein the drying temperature of the granules is 110 ℃, and the drying time is 4.5 hours;
5) injection molding: heating the rapid injection molding machine and the injection mold, setting the barrel temperature of the rapid injection molding machine to be 270 ℃, the front mold to be 120 ℃ and the rear mold to be 80 ℃, putting the dried granules obtained in the step 4) into a spiral material conveying machine, conveying the granules into the rapid injection molding machine through the spiral material conveying machine for glue melting, and injecting the granules into a mold cavity through a hot runner in a high-pressure mode to form a parison;
6) blow molding: attaching the parison to a mandrel, moving the parison into a blow mold, and blowing air into the parison through the mandrel to expand the parison until the parison is attached to the inner wall of the blow mold;
7) cooling and demolding: keeping pressure and cooling the parison to shape the parison, opening the mold, and demoulding and taking out the finished product;
8) and (3) silk-screen printing: printing a pattern on the surface of the finished product part obtained in the step 7) by using a silk-screen printing mode, and curing the pattern after printing the pattern by using the ink to obtain a silk-screen product finished product, wherein the curing temperature is 60 ℃ and the curing time is 60 minutes;
9) packaging and warehousing: directly packaging the finished product part obtained in the step 7) and then registering and warehousing, or packaging the silk-screen product finished product obtained in the step 8) and then registering and warehousing.
Embodiment 2, a method for preparing a spray-free electric toothbrush and a toothbrush sterilizer, comprising the following steps:
1) preparing raw materials: weighing 95 parts by weight of PC resin, 6 parts by weight of spraying-free pigment, 2 parts by weight of pearlescent additive, 0.6 part by weight of auxiliary agent and 0.3 part by weight of antioxidant;
2) free of spraying and coloring: taking the raw materials according to the proportion and putting the raw materials into a high-speed blender to be uniformly mixed to obtain a spraying-free material;
3) grain extraction: extruding the spraying-free material obtained in the step 2) from a double-screw extruder, cooling and granulating in a granulator to obtain granules;
4) and (3) drying the granules: drying the granules obtained in the step 3) to obtain dried granules, wherein the drying temperature of the granules is 120 ℃, and the drying time is 4 hours;
5) injection molding: heating the rapid injection molding machine and the injection mold, setting the barrel temperature of the rapid injection molding machine to be 285 ℃, the front mold to be 145 ℃ and the rear mold to be 80 ℃, putting the dried granules obtained in the step 4) into a spiral material conveying machine, conveying the granules into the rapid injection molding machine through the spiral material conveying machine for glue melting, and injecting the granules into a mold cavity through a hot flow channel in a high-pressure mode to form a parison;
6) blow molding: attaching the parison to a mandrel, moving the parison into a blow mold, and blowing air into the parison through the mandrel to expand the parison until the parison is attached to the inner wall of the blow mold;
7) cooling and demolding: keeping pressure and cooling the parison to shape the parison, opening the mold, and demoulding and taking out the finished product;
8) packaging and warehousing: directly packaging the product finished product obtained in the step 7), and then registering and warehousing.
Embodiment 3, a method for preparing a spray-free electric toothbrush and a toothbrush sterilizer, comprising the following steps:
1) preparing raw materials: weighing 100 parts by weight of PC resin, 7 parts by weight of spraying-free pigment, 3 parts by weight of pearlescent additive, 0.5 part by weight of auxiliary agent and 0.5 part by weight of antioxidant;
2) free of spraying and coloring: taking the raw materials according to the proportion and putting the raw materials into a high-speed blender to be uniformly mixed to obtain a spraying-free material;
3) grain extraction: extruding the spraying-free material obtained in the step 2) from a double-screw extruder, cooling and granulating in a granulator to obtain granules;
4) and (3) drying the granules: drying the granules obtained in the step 3) to obtain dried granules, wherein the drying temperature of the granules is 130 ℃, and the drying time is 3.5 h;
5) injection molding: heating the rapid injection molding machine and the injection mold, setting the barrel temperature of the rapid injection molding machine to be 295 ℃, the temperature of a front mold to be 160 ℃ and the temperature of a rear mold to be 80 ℃, putting the dried granules obtained in the step 4) into a spiral material conveying machine, conveying the granules into the rapid injection molding machine through the spiral material conveying machine for glue melting, and injecting the granules into a mold cavity through a hot flow channel in a high-pressure mode to form a parison;
6) blow molding: attaching the parison to a mandrel, moving the parison into a blow mold, and blowing air into the parison through the mandrel to expand the parison until the parison is attached to the inner wall of the blow mold;
7) cooling and demolding: keeping pressure and cooling the parison to shape the parison, opening the mold, and demoulding and taking out the finished product;
8) and (3) silk-screen printing: printing a pattern on the surface of the finished product part obtained in the step 7) by using a silk-screen printing mode, and curing the pattern after printing the pattern by using the ink to obtain a silk-screen product finished product, wherein the curing temperature is 70 ℃ and the curing time is 45 minutes;
9) packaging and warehousing: or packaging the finished silk-screen product obtained in the step 8), and then registering and warehousing.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. A preparation method of a spraying-free electric toothbrush and a toothbrush sterilizer is characterized by comprising the following steps:
1) preparing raw materials: weighing 90-100 parts by weight of PC resin, 5-7 parts by weight of spraying-free pigment, 1-3 parts by weight of pearlescent additive, 0.1-1 part by weight of auxiliary agent and 0.1-0.5 part by weight of antioxidant;
2) free of spraying and coloring: taking the raw materials according to the proportion and putting the raw materials into a high-speed blender to be uniformly mixed to obtain a spraying-free material;
3) grain extraction: extruding the spraying-free material obtained in the step 2) from a double-screw extruder, cooling and granulating in a granulator to obtain granules;
4) and (3) drying the granules: drying the granules obtained in the step 3) to obtain dried granules, wherein the drying temperature of the granules is 110-;
5) injection molding: heating the rapid injection molding machine and the injection mold, setting the barrel temperature of the rapid injection molding machine to be 270-295 ℃, the front mold to be 120-160 ℃, and the rear mold to be 80 ℃, putting the dried granules obtained in the step 4) into a spiral material conveying machine, conveying the granules into the rapid injection molding machine through the spiral material conveying machine for glue melting, and injecting the granules into a mold cavity through a hot flow channel in a high-pressure mode to form a parison;
6) blow molding: attaching the parison to a mandrel, moving the parison into a blow mold, and blowing air into the parison through the mandrel to expand the parison until the parison is attached to the inner wall of the blow mold;
7) cooling and demolding: keeping pressure and cooling the parison to shape the parison, opening the mold, and demoulding and taking out the finished product;
8) and (3) silk-screen printing: printing a pattern on the surface of the finished product part obtained in the step 7) by using a silk-screen printing mode, and curing the pattern after printing the pattern by using the ink to obtain a silk-screen product finished product, wherein the curing temperature is 60-70 ℃, and the curing time is 45-60 minutes.
9) Packaging and warehousing: directly packaging the finished product part obtained in the step 7) and then registering and warehousing, or packaging the silk-screen product finished product obtained in the step 8) and then registering and warehousing.
2. The method for preparing a spray-free electric toothbrush and toothbrush sterilizer as claimed in claim 1, wherein: the temperature in the high-speed blender in the step 2) is normal temperature, and the high-speed mixing time is 6-9 min.
3. The method for preparing a spray-free electric toothbrush and toothbrush sterilizer as claimed in claim 1, wherein: injecting the molten raw materials into a mold for injection molding in three sections by the rapid injection molding machine in the step 5), wherein the total injection molding time is 10s, the first-section pressure is 100-120 MPa, and the injection speed is 55 +/-5 mm/s; the second-stage pressure is 70-100 MPa, and the injection speed is 40 +/-5 mm/s; the pressure of the third section is 60-70 MPa, and the injection speed is 20 +/-5 mm/s.
4. The method for preparing a spray-free electric toothbrush and toothbrush sterilizer as claimed in claim 1, wherein: and 6) during pressure maintaining and cooling, keeping the pressure of the die at 55MPa for 20s +/-5 s, and cooling for 20s +/-5 s.
5. The method for preparing a spray-free electric toothbrush and toothbrush sterilizer as claimed in claim 1, wherein: the extrusion temperature of the double-screw extruder in the step 3) is 210-230 ℃, the rotating speed is 150-180 r/min, and the feeding speed is 120-160 Kg/h.
6. The method for preparing a spray-free electric toothbrush and toothbrush sterilizer as claimed in claim 1, wherein: the spraying-free pigment in the step 1) is one or more of aluminum powder, copper powder, gold powder, silver powder, zinc powder, tin powder, iron powder and nickel powder, and the antioxidant in the step 1) is one or more of hindered phenol antioxidant, phosphite antioxidant, amine antioxidant, sulfur-containing antioxidant or metal salt antioxidant; the auxiliary agent in the step 1) is one or more than two of a silicone lubricant, an amide lubricant, a stearic acid lubricant, a polyolefin lubricant or an ester lubricant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011231062.5A CN112477224B (en) | 2020-11-06 | 2020-11-06 | Spraying-free electric toothbrush and preparation method of toothbrush sterilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011231062.5A CN112477224B (en) | 2020-11-06 | 2020-11-06 | Spraying-free electric toothbrush and preparation method of toothbrush sterilizer |
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| Publication Number | Publication Date |
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| CN112477224A true CN112477224A (en) | 2021-03-12 |
| CN112477224B CN112477224B (en) | 2022-11-22 |
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| CN202011231062.5A Active CN112477224B (en) | 2020-11-06 | 2020-11-06 | Spraying-free electric toothbrush and preparation method of toothbrush sterilizer |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140138880A1 (en) * | 2011-11-22 | 2014-05-22 | The Procter & Gamble Company | Method for producing a toothbrush having an inner cavity |
| CN108192342A (en) * | 2018-02-05 | 2018-06-22 | 罗宇强 | One kind is exempted to spray nylon material and its production technology |
| CN110358277A (en) * | 2019-06-21 | 2019-10-22 | 东莞市广正模具塑胶有限公司 | A kind of enhancing is flexible to exempt to spray makrolon material, mobile phone shell and preparation method thereof |
-
2020
- 2020-11-06 CN CN202011231062.5A patent/CN112477224B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140138880A1 (en) * | 2011-11-22 | 2014-05-22 | The Procter & Gamble Company | Method for producing a toothbrush having an inner cavity |
| CN108192342A (en) * | 2018-02-05 | 2018-06-22 | 罗宇强 | One kind is exempted to spray nylon material and its production technology |
| CN110358277A (en) * | 2019-06-21 | 2019-10-22 | 东莞市广正模具塑胶有限公司 | A kind of enhancing is flexible to exempt to spray makrolon material, mobile phone shell and preparation method thereof |
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| Publication number | Publication date |
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| CN112477224B (en) | 2022-11-22 |
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