CN103978661B - Method for producing planar orange-textured and sand-textured powder coatings by using double-screw extruder - Google Patents
Method for producing planar orange-textured and sand-textured powder coatings by using double-screw extruder Download PDFInfo
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- CN103978661B CN103978661B CN201410179594.7A CN201410179594A CN103978661B CN 103978661 B CN103978661 B CN 103978661B CN 201410179594 A CN201410179594 A CN 201410179594A CN 103978661 B CN103978661 B CN 103978661B
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- China
- Prior art keywords
- screw extruder
- engagement
- product
- double
- tangerine line
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Classifications
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
Abstract
The invention discloses a method for producing planar orange-textured and sand-textured powder coatings by using a double-screw extruder. In a melt extrusion step of a production process of the powder coatings, the double-screw extruder is adopted; each of screws of the double-screw extruder comprises an engagement section, a connecting section and a transmission section, wherein the engagement section is connected onto the transmission section through the connecting section; double screws of the extruder are engaged together through the engagement sections; each engagement section is a whole formed by fixedly connecting a plurality of elliptic-cylinder engagement gaskets, and an installation angle of two adjacent engagement gaskets in the anti-clockwise direction is respectively set as 90 DEG, 60 DEG and 30 DEG. Through changing the installation angle of the engagement gaskets on the double screws inside the double-screw extruder, the powder coatings with special surfaces are produced; the surface texture of the powder coating products is stable, the surface texture distribution is uniform, the process is simple, no redundant operations are required, the device repeatable operation performance is high, and the method is suitable for large-scale expansion production.
Description
Technical field
The present invention relates to the production equipment field of powdery paints, more particularly to it is flat to relate to the use of double screw extruder production
Face, tangerine line, the method for grit powder coating.
Background technology
Powdery paints is sketched：Powdery paints is free from solvent, the very coating of solid part.It mainly consists of：Tree
Fat, levelling agent, curing agent, filler, pigment and auxiliary agent etc. are constituted.
Due to not containing the necessary solvent of conventional coating, so it has safe and environment-friendly, the repeatable spy for utilizing
Property, so as to obtain extensive popularization and application.It is mainly used in protection and the decoration of metal surface.Can be used for household electrical appliance,
The fields such as furniture, kitchen tools, auto parts machinery, pipeline, building materials.
Powdery paints of classifying from surface configuration can make plane high glaze, plane low gloss, tangerine line, sand streak, it is transparent,
Various types of coatings such as metal surface.
The primary raw material of powdery paints is roughly the same, by selecting different special materials（Auxiliary agent）And using suitable life
Production. art can be obtained the incomparable special surface of liquid coating, so as to play good decorative effect to its product, strengthen
The texture on product decoration surface.The tangerine line and grit powder coating of the present invention is exactly by improving the mixing of extruder screw effect
Really, using appropriate auxiliary agent producing.
Generally production tangerine line and grit powder coating are reached by using the agent of tangerine line and sand streak agent（0.3%-0.5%'s
Tangerine line auxiliary agent CAB（Butyl acetate is fine）, 0.3%-0.5% sand streak agent（Ptfe micropowder wax）, but the powder painting of its production
Expect and its unstable.
Tangerine line powdery paints is primarily present problems with：Tangerine line lines is unstable, when it is good when bad, poor repeatability；Tangerine line line
Road can't get out peace, no tangerine line effect.
Grit powder coating is primarily present problems with：The difficult extrusion of sand streak, not blanking, production efficiency are low；Sand streak is unstable
It is fixed, poor repeatability, a collection of powder in process of production gloss to have height to have low, sand streak texture has slightly have thin, again will finally need
The powder second mixing for being produced.
The content of the invention
For above-mentioned problem, the present invention provides a kind of combination by changing the gear block of twin-screw and produces special
Type produces the fine arts powdery paints such as tangerine line and sand streak with this.
In order to achieve the above object, the technical solution used in the present invention is as follows：It is a kind of flat using double screw extruder production
Face, tangerine line, the method for grit powder coating, described powdery paints through raw material premix → melting extrusion → compressing tablet it is broken →
The powder coating product for having sprayed is obtained after Crushing of Ultrafine → sieve powder packaging → product spraying, is adopted in described melting extrusion step
Be double screw extruder, the screw rod of described double screw extruder includes engaged section, linkage section and transmission segment, described engagement
Section is connected in transmission segment by linkage section, and the twin-screw of the extruder is meshed together by engaged section, described engagement
The entirety that section is fixedly connected into by the engagement pad of polylith elliptic cylinder, two pieces of adjacent engagement pads are in the counterclockwise direction
Installation angle be respectively set to 90 °, 60 ° and 30 °.
The engagement angle of on same position two pieces of engagement pads of two screw rods of the present invention is 90 °；By
Be engagement rotation in two screw rods, tooth matching angle is right angle, it is ensured that two pieces of oval engagement pads on the position of engagement not
Preferably there is abrasion, improve pressed powder and normally engage extrusion operating efficiency.
Two engagement pads adjacent on the single screw rod of double screw extruder of the present invention are in the counterclockwise direction
Installation angle be 30 °, product be grit powder coating；In the production process of grit powder of the present invention, the original of product
Add the sand streak auxiliary agent of 0.02%-0.05% in material（Ptfe micropowder wax）；.
Two engagement pads adjacent on the single screw rod of double screw extruder of the present invention are in the counterclockwise direction
Installation angle be 60 °, product be tangerine line powdery paints；In the production process of tangerine line powder of the present invention, products material
The tangerine line auxiliary agent CAB of middle addition 0.02%-0.05%（Butyl acetate cellulose）.
Adjacent on single screw rod of the present invention two engage the installation angle in the counterclockwise direction of pads
90 °, product is plane powdery paints；In the setting angle of vertical engagement pad, the engagement effect between two screw rods is high, Gu
The particle of body powdery paints is less, connects more tight between powder coating particles, and the gap existed between coating particles cannot
Recognized by naked eyes, thus the smooth reflecting surface formed on product, product surface glossiness height,.
The screw rod of extruder of the present invention is overall structure, is molded by steel ingot disposal pouring；Due to extruder
The particularity of internal extrusion screw rod work, internal operating temperature is high, operating pressure is big etc., is molded by primary concreting
Screw rod is the forwardtransfer signal worm of the present invention, is hardly damaged, substantially increases the service life of screw rod.
It is an advantage of the current invention that：The present invention engage between pad on twin-screw inside double screw extruder by being changed
Setting angle only adds a small amount of surface modifier, subtracts significantly producing the powdery paints of special surface in overall production process
Surface modifier is lacked for the impact of product surface lines, the surface pattern of powder coating product is stable, and surface pattern distribution
Uniformly, process is simple, without the need for unnecessary operation, the repeatable operating characteristics of device is high, it is adaptable to the production of extensive extension.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is 90 ° of screw sections structure diagrams of the present invention；
Fig. 3 is 30 ° of screw sections structure diagrams of the present invention；
Fig. 4 is 60 ° of screw sections structure diagrams of the present invention；
Fig. 5 is the product sketch of 90 ° of screw rods of the present invention；
Fig. 6 is the product sketch of 30 ° of screw rods of the present invention；
Fig. 7 is the product sketch of 60 ° of screw rods of the present invention；
Fig. 8 is the contrast product sketch of the present invention；
Wherein, 1 engagement pad（1）, 2 engagement pads（2）, 3 linkage sections, 4 transmission segments, 90 ° of engagement pads of 1-1
（1）, 90 ° of engagement pads of 1-2（2）, 30 ° of engagement pads of 2-1（1）, 30 ° of engagement pads of 2-2（2）, 60 ° of engagement pads of 3-1
（1）, 60 ° of engagement pads of 3-2（2）.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1：A kind of utilization double screw extruder as shown in Figure 1 produces plane, tangerine line, the side of grit powder coating
Method, described powdery paints crush → Crushing of Ultrafine → sieve powder packaging → product spray through the premix → melting extrusion → compressing tablet of raw material
The powder coating product for having sprayed is obtained after painting, uses double screw extruder in described melting extrusion step, it is described
The screw rod of double screw extruder includes engaged section 1 and 2, linkage section 3 and transmission segment 4, and described engaged section 1 and 2 passes through linkage section 3
It is connected in transmission segment 4, the twin-screw of the extruder is meshed together by engaged section, described engaged section is oval by polylith
The engagement entirety that is fixedly connected into of pad 1 and 2 of column type, the peace in the counterclockwise direction of adjacent two pieces of engagement pads 1 and 2
Clamping angle is respectively set to 90 °, 60 ° and 30 °.
Embodiment 2：Tangerine line powder as shown in Fig. 1,4,7,8（60°）Production instance；
Formula：Tangerine line powder（60°）
E-12 epoxy resin 150
Polyester resin 150
Wax powder 1
CAB 15
Blanc fixe 180.2
Carbon black 3.8
Total 500
According to the product of above-mentioned formula production after spraying operation, the Product Rendering that obtains tangerine line as shown in Figure 7
Shape, the coating particles of the product for drawing are relatively large in diameter, and there is certain gap between the particle of powdery paints, in the outer of product
The decorative pattern of the tangerine peel sample that surface is formed, the certain convex-concave surface of the presence of product, tangerine line lines are stable, by the device again
Multiple operating characteristics is higher, and appearance looks elegant is generous, is adapted to extensive extension production.
Embodiment 3：The production instance of the grit powder (30 °) as shown in Fig. 1,3,6,8；
Formula：Grit powder (30 °)
E-12 epoxy resin 150
Polyester resin 150
Wax powder 1
Sand streak agent 16
Blanc fixe 179.2
Carbon black 3.8
Total 500
According to above-mentioned formula production product after spraying operation, the product effect for obtaining is sand streak as shown in Figure 6
Shape, show that particle is less compared to tangerine line powder between the coating of the product, is completely embedded between powder coating particles, but applies
Still there is certain gap between material, therefore define the patterned surfaces of sand shape on product, the presence of product is certain
Convex-concave surface, but the gap of convex-concave surface is less, sand streak lines is stable, repeats that operability is high, and appearance looks elegant is generous, fits
Close extensive extension production.
Embodiment 4：Smooth powder as shown in Fig. 1,2,5,8（90°）Production instance；
Formula：Smooth powder（90°）
E-12 epoxy resin 150
Polyester resin 150
Levelling agent 5
Optical brightener 5
Wax powder 1
Blanc fixe 182.5
Carbon black 4
Styrax 2.5
Total 500
According to above-mentioned formula production product after spraying operation, it is smooth shape as shown in Figure 5 to obtain product effect,
Between the coating of the product for drawing, particle is uniform, connects more tight, exist between coating particles between powder coating particles
Gap cannot recognize by naked eyes that therefore the smooth reflecting surface formed on product, product surface glossiness are high, device can
Repeat performance high, appearance looks elegant is generous, it is adaptable to different decoration demands.
In addition to the implementation, the present invention can also have other embodiment.All employing equivalents or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (5)
1. a kind of utilization double screw extruder produces plane, tangerine line, the method for grit powder coating, and described powdery paints is passed through
Premix → melting extrusion → the compressing tablet of raw material is broken → and Crushing of Ultrafine → sieve powder packaging → product obtains the powder that sprayed after spraying
Coating products, it is characterised in that use double screw extruder, the double screw extruder in described melting extrusion step
Screw rod include engaged section, linkage section and transmission segment, described engaged section is connected in transmission segment by linkage section, the extrusion
The twin-screw of machine is meshed together by engaged section, and described engaged section is fixedly connected into by the engagement pad of polylith elliptic cylinder
Entirety, when the product of production is plane powdery paints, adjacent two pieces of engagements pad installation angles in the counterclockwise direction
It is set to 90 °；When the product of production is tangerine line powdery paints, two pieces of adjacent engagement pad installation folders in the counterclockwise direction
Angle is set to 60 °；When the product of production is grit powder coating, two pieces of adjacent engagement pad installations in the counterclockwise direction
Angle is set to 30 °.
2. utilization double screw extruder according to claim 1 produces plane, tangerine line, the method for grit powder coating, its
It is characterised by, on same position two pieces of engagement angles for engaging pads of two described screw rods are 90 °.
3. utilization double screw extruder according to claim 1 produces plane, tangerine line, the method for grit powder coating, its
It is characterised by, in the production process of described grit powder, in the raw material of product, adds the sand streak auxiliary agent of 0.02%-0.05%：It is poly-
Tetrafluoroethene micro mist wax.
4. utilization double screw extruder according to claim 1 produces plane, tangerine line, the method for grit powder coating, its
It is characterised by, in the production process of described tangerine line powder, in products material, adds the tangerine line auxiliary agent CAB of 0.02%-0.05%：Vinegar
Acid butyl ester cellulose.
5. utilization double screw extruder according to claim 1 produces plane, tangerine line, the method for grit powder coating, its
It is characterised by, the screw rod of described extruder is overall structure, is molded by steel ingot disposal pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179594.7A CN103978661B (en) | 2014-04-30 | 2014-04-30 | Method for producing planar orange-textured and sand-textured powder coatings by using double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179594.7A CN103978661B (en) | 2014-04-30 | 2014-04-30 | Method for producing planar orange-textured and sand-textured powder coatings by using double-screw extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103978661A CN103978661A (en) | 2014-08-13 |
| CN103978661B true CN103978661B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410179594.7A Active CN103978661B (en) | 2014-04-30 | 2014-04-30 | Method for producing planar orange-textured and sand-textured powder coatings by using double-screw extruder |
Country Status (1)
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| CN (1) | CN103978661B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4895688A (en) * | 1988-10-24 | 1990-01-23 | Oji Paper Co., Ltd. | Method of producing a support for photographic paper |
| JP5137613B2 (en) * | 2008-02-25 | 2013-02-06 | 株式会社神戸製鋼所 | Kneading disc segment and twin screw extruder |
| CN102775888A (en) * | 2012-08-23 | 2012-11-14 | 广东华江粉末科技有限公司 | Sand pattern powder coating for aluminum profiles as well as preparation method and application thereof |
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| CN103978661A (en) | 2014-08-13 |
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Address after: No. 82, Huada Road, Jiangsu Yangzi River International Chemical Industrial Park, Jiangsu, Suzhou, Jiangsu Patentee after: Jiangnan powder coating (Zhangjiagang) Co., Ltd. Address before: No. 82, Huada Road, Jiangsu Yangzi River International Chemical Industrial Park, Jiangsu, Suzhou, Jiangsu Patentee before: Zhangjiagang Jiangnan Powder Coating Co., Ltd. |