CN101676594A - Double-material profile, molding method thereof and dedicated co-extrusion die head - Google Patents
Double-material profile, molding method thereof and dedicated co-extrusion die head Download PDFInfo
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- CN101676594A CN101676594A CN200810215286A CN200810215286A CN101676594A CN 101676594 A CN101676594 A CN 101676594A CN 200810215286 A CN200810215286 A CN 200810215286A CN 200810215286 A CN200810215286 A CN 200810215286A CN 101676594 A CN101676594 A CN 101676594A
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- visible surface
- section bar
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- extrusion die
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Abstract
The invention discloses a double-material profile, a molding method thereof and a dedicated co-extrusion die head, wherein, the visual surface, non-visual surface and inner ribs of the profile are made of two different plastics. Mold cavities corresponding to the visual surface, non-visual surface and inner ribs of the profile can be separated into independent runners by connecting ribs arranged in the mold cavities of a transition plate (5), a supporting plate (4), a compression plate (3), a pre-molding plate (2) and a molding plate (1) of the dedicated co-extrusion die head; the runner corresponding to the visual surface of the profile is communicated with the main runner on a machine neck (6); and a co-extrusion runner (10) is communicated with the runners (9 and 8) corresponding to thenon-visual surface and the inner ribs of the profile. By using the products manufactured by the method of the invention, the non-visual surface and the ribs of the profile can be made from waste materials or another materials having poor performance, thereby improving the utilization rate of the waste materials and reducing the production cost of materials.
Description
Technical field
The present invention relates to a kind of plastic material and forming method thereof that obtains by two kinds of different materials.
Background technique
Usually the visible surface of extruded plastic profile is very high to photometric brightness and surface color requirement, and is therefore very high to the materials requirement, but not visible surface does not then have this respect requirement, less demanding to materials.And all at present extruded plastic profile visible surfaces and non-visible surface are made by a kind of material, because non-visible surface adopts identical plastics with visible surface, must cause the waste of high-quality plastics.Though the colored co-extrusion section bar that coats has also adopted two kinds of plastics, this section bar only coats the colored material of co-extrusion one deck 0.3～0.5mm to the section bar surface, and the coextruded layer and the basic unit of the section bar that this method obtains are sticked together, and mainly play decorating action.Thinner, the colored useless co-extrusion die head co-extruding flow channel simplicity of design of moulding of co-extrusion die head co-extruding flow channel design ratio that coats, the colored co-extrusion that coats is at the die head shaping area co-extrusion formation parison that heals, and the useless co-extrusion visible surface and non-visible surface and interior muscle moulded adopts independent separately feed mode respectively in the die head transition zone, under the situation of three bursts of materials flow mutual noninterferences, through the compressing area, finally at the shaping area formation parison that heals.
Under the situation of current Market competition, the existence that effectively reduces cost of production and be each enterprise this.Mould the coextrusion mold method and this kind is useless, can improve the utilization ratio of material greatly, effectively reduce production costs.This kind coextrusion mold method difficult point is the mobile bad control of two kinds of materials flows, and the healing moulding is difficulty relatively.And this patent under the prerequisite that does not influence the comprehensive usability of extrusion profile, has reduced cost of production based under the above background situation, has improved the utilization ratio of material.
Summary of the invention
The purpose of this invention is to provide its forming method of a kind of double-material profile and dedicated co-extrusion die head, make the visible surface of section bar make by two kinds of different plastics, thereby can reduce the cost of production of section bar with non-visible surface.
Double-material profile of the present invention is achieved in that the visible surface of section bar adopts two kinds of different plastics to make with non-visible surface and interior muscle.Non-visible surface of section bar and interior muscle materials can select for use material slightly to be worse than the visible surface materials like this, such as the waste material that produces in the extrusion process, therefore, under the situation that does not reduce section quality, can save the cost of production of section bar.
The forming method of double-material profile of the present invention is: the visible surface of section bar and non-visible surface and interior muscle adopt the co-extrusion method moulding, the visible surface materials of section bar are by the sprue feed of co-extrusion die head, non-visible surface and interior muscle materials are by the co-extruding flow channel feed of co-extrusion die head, two kinds of material are in the shaping area fusion of co-extrusion die head, again through typing and cooling and moulding.For the section bar of different section, can obtain by changing die head co-extruding flow channel form, the section bar that promptly meets above feature can adopt this co-extrusion method to realize.
The dedicated co-extrusion die head of double-material profile of the present invention, comprise the machine neck, transition plate, supporting plate, compressed board, preformed board and shaping board, co-extruding flow channel is opened at the machine neck, transition plate, on one in three templates of supporting plate, transition plate, supporting plate, compressed board, be respectively equipped with independent core separately in the die cavity of preformed board and shaping board, each independent core links to each other with each template by several connecting tendon, the die cavity that connecting tendon is corresponding with non-visible surface of section bar and interior muscle with the die cavity of section bar visible surface correspondence is separated to form independently runner mutually, the runner of section bar visible surface correspondence communicates with sprue on the machine neck, and the runner that co-extruding flow channel is corresponding with non-visible surface of section bar and interior muscle communicates.Mutual noninterference between visible surface and non-visible surface (and in muscle) runner, each runner are to the independent feed of its corresponding forming area, and materials flow is flowed in runner zone separately, play mutually not, flow is easy to control, and finally heal at shaping area, moulding.
The inlet of co-extrusion charging can be arranged on the machine neck, also can be arranged on supporting plate and the transition plate.The inlet of co-extruding flow channel stops time enough apart from the necessary 〉=70mm of die head discharge end distance to guarantee the co-extrusion material in die head, materials flow is fully plastified, and obtains enough intensity and physical property.
The goods that adopt the inventive method to produce, non-visible surface and interior muscle can adopt the material of waste material or another kind of performance difference, have improved the utilization ratio of waste material, have reduced the cost of production of raw material.Physical properties such as size changing rate after the cold punching of goods, the heating all meet international standard.
Description of drawings:
Fig. 1 is the plan view of co-extrusion die head of the present invention.
Fig. 2 is along the sectional view of A-A line among Fig. 1.
Fig. 3 is along the sectional view of B-B line among Fig. 2.
The article construction schematic representation of Fig. 4 for adopting the inventive method to produce.
Among the above-mentioned figure: 1, shaping board; 2, preformed board; 3, compressed board; 4, supporting plate; 5, transition plate; 6, machine neck; 7, visible surface runner; 8, interior muscle runner; 9, non-visible surface runner; 10, co-extruding flow channel; 11-13, die cavity; 14, section bar visible surface; 15, muscle in the section bar; 16, the non-visible surface of section bar;
Embodiment
As shown in Figure 4, by the goods that the present invention produces, section bar visible surface 14 adopts virgin material, the waste material that the non-visible surface 16 employing section bars of muscle 15 and section bar produce in producing in the section bar or the material of another kind of performance difference.
Its die head especially used structure comprises machine neck 6, transition plate 5, supporting plate 4, compressed board 3, preformed board 2 and shaping board 1 as shown in Figure 1 to Figure 3, and co-extruding flow channel 10 is opened on machine neck 6, and the inlet of co-extruding flow channel 10 is apart from die head discharge end distance 〉=70mm.Be respectively equipped with independent core separately in the die cavity of transition plate 5, supporting plate 4, compressed board 3, preformed board 2 and shaping board 1, each independent core links to each other with each template by several connecting tendon, the die cavity 13,12 that connecting tendon is corresponding with non-visible surface of section bar and interior muscle with the die cavity 11 of section bar visible surface correspondence is separated mutually and is formed independently runner 7,8,9, the runner of section bar visible surface correspondence communicates with sprue 7 on the machine neck 6, and visible surface runner 7, the interior muscle runner 8 of the die cavity 13,12 that co-extruding flow channel 10 and corresponding and the non-visible surface of section bar and interior muscle are corresponding communicate.The materials flow of non-visible surface and interior muscle is extruded by a co-extrusion machine, needs individual flow in the starting stage of runner, runner is separately arranged, promptly non-visible surface runner 9 and interior muscle runner 8.Only in the zone of shaping board 1 or preformed board 2, heal.
6 chargings of visible surface materials flow slave neck are compressed step by step by visible surface runner 7; Non-visible surface materials flow flows into from co-extruding flow channel 10, compresses step by step by interior muscle runner 8 and non-visible surface runner 9; Various materials flows, are further compressed at compressed board 3 through transition plate 5, supporting plate 4 current stabilizations through runner, and through preformed board 2 further current stabilizations, healing at shaping board 1 obtains the parison of definite shape.
Claims (4)
1, a kind of double-material profile is characterized in that: the visible surface of section bar [14] adopts two kinds of different plastics to make with non-visible surface [16] and interior muscle [15].
2, a kind of forming method for preparing the described double-material profile of claim 1, it is characterized in that: the visible surface of section bar [14] adopts the co-extrusion method moulding with non-visible surface [13] and interior muscle [12], the visible surface materials of section bar are by the sprue feed of co-extrusion die head, non-visible surface and interior muscle materials are by the co-extruding flow channel feed of co-extrusion die head, and two kinds of material fuse at the shaping area of co-extrusion die head.
3, a kind of dedicated co-extrusion die head that is used to process the described double-material profile of claim 1, comprise machine neck [6], transition plate [5], supporting plate [4], compressed board [3], preformed board [2] and shaping board [1], co-extruding flow channel [10] is opened in machine neck [6], transition plate [5], on one in [4] three templates of supporting plate, it is characterized in that: transition plate [5], supporting plate [4], compressed board [3], be respectively equipped with independent core separately in the die cavity of preformed board [2] and shaping board [1], each independent core links to each other with each template by several connecting tendon, connecting tendon is with the die cavity [11] and non-visible surface of section bar and the corresponding die cavity [13 of interior muscle of section bar visible surface correspondence, 12] be separated to form independently runner [7 mutually, 8,9], the runner of section bar visible surface correspondence communicates co-extruding flow channel [10] and non-visible surface of section bar and the corresponding runner [9 of interior muscle with sprue [7] on the machine neck [6], 8] communicate.
4, the dedicated co-extrusion die head of processing double-material profile according to claim 3 is characterized in that: the inlet of co-extruding flow channel [10] is apart from die head discharge end distance 〉=70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810215286A CN101676594A (en) | 2008-09-19 | 2008-09-19 | Double-material profile, molding method thereof and dedicated co-extrusion die head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810215286A CN101676594A (en) | 2008-09-19 | 2008-09-19 | Double-material profile, molding method thereof and dedicated co-extrusion die head |
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| Publication Number | Publication Date |
|---|---|
| CN101676594A true CN101676594A (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810215286A Pending CN101676594A (en) | 2008-09-19 | 2008-09-19 | Double-material profile, molding method thereof and dedicated co-extrusion die head |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079127A (en) * | 2010-12-02 | 2011-06-01 | 铜陵三佳科技股份有限公司 | Method for forming section with plastic lining and extrusion die head thereof |
| CN103692633A (en) * | 2013-12-13 | 2014-04-02 | 铜陵中发三佳科技股份有限公司 | Extrusion mold with pressure-balanced double-layer coextrusion flow channel |
| CN107511981A (en) * | 2017-08-31 | 2017-12-26 | 四川塑塑料制品有限公司 | A kind of double-material profile and extrusion die |
| CN108544730A (en) * | 2018-04-03 | 2018-09-18 | 珠海国能新材料股份有限公司 | A kind of antenna house extrusion die |
-
2008
- 2008-09-19 CN CN200810215286A patent/CN101676594A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079127A (en) * | 2010-12-02 | 2011-06-01 | 铜陵三佳科技股份有限公司 | Method for forming section with plastic lining and extrusion die head thereof |
| CN103692633A (en) * | 2013-12-13 | 2014-04-02 | 铜陵中发三佳科技股份有限公司 | Extrusion mold with pressure-balanced double-layer coextrusion flow channel |
| CN107511981A (en) * | 2017-08-31 | 2017-12-26 | 四川塑塑料制品有限公司 | A kind of double-material profile and extrusion die |
| CN108544730A (en) * | 2018-04-03 | 2018-09-18 | 珠海国能新材料股份有限公司 | A kind of antenna house extrusion die |
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Application publication date: 20100324 |