CN101564899A - Glue-injection unit of glass fiber reinforced plastic tubular product pultrusion glue-injection device and glue-injection mold - Google Patents
Glue-injection unit of glass fiber reinforced plastic tubular product pultrusion glue-injection device and glue-injection mold Download PDFInfo
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- CN101564899A CN101564899A CNA2009100691460A CN200910069146A CN101564899A CN 101564899 A CN101564899 A CN 101564899A CN A2009100691460 A CNA2009100691460 A CN A2009100691460A CN 200910069146 A CN200910069146 A CN 200910069146A CN 101564899 A CN101564899 A CN 101564899A
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Abstract
A glue injection unit of a glass fiber reinforced plastic tubular product pultrusion glue-injection device and a glue-injection mold relate to a device that dips glue solution in pultrusion equipment and leads glass yarn and felt to be compounded and thermoset so as to form continuous sectional materials, wherein the glue-injection unit comprises the glue-injection mold and a mandrel capable of leading glass fiber reinforced plastic sectional material to hollowly enter a pultrusion mold, wherein the glue-injection mold is provided with a mandrel through hole through which the mandrel can pass, injection cavities are arranged along the mandrel through hole and a subpressure cavity is arranged between adjacent injection cavities. The glue injection mold arranged for the glue-injection unit of the proposal helps reasonably configure the structure of the injection cavities and the subpressure cavities, thus being capable of realizing the work of dipping the glass yarn and felt by injecting glue solution in a closed mold device, not only effectively avoiding the problem of free volatilization of the glue solution, but also effectively ensuring the stability of viscosity of the glue solution in the whole pultrusion process. The proposal provides two implementation solutions of an integral forming mold and a mold type block, thus being easier for industrial promotion.
Description
Technical field
The invention belongs to the pultrusion apparatus field of composite, relate to a kind of equipment that makes the compound thermosetting of organdy and felt become continuous section bar, in particular for the glue injection units and the mould thereof of the glue filling device of dragging and squeezing glass fiber reinforced plastics tubing.
Background technology
Known fiberglass forming machine using drawing and extrusion, by haulage gear organdy and felt are emitted on creel and felt frame respectively freely, after making organdy and felt through glue on the glue drill traverse, again by the yarn plate on the pultrusion machine frame, felt cover, give shaping mould after, enter mould, mould is heated cover and encircles, heating, the organdy felt that soaked glue passes through this dies cavity curing molding, and being compressed to draw by haulage gear becomes continuous section bar tubing.
Disclose a kind of system that makes pultruded component as Chinese patent application 200680043251, it comprises the dipping mouth mould that is used for the wetting fiber yarn of fluoropolymer resin precursor.A dipping mouthful mould comprises first Room of coated yarns outer surface and second Room of coated yarns internal fiber.The sectional area of second Room reduces between the second Room mouth and the outlet of second Room.This system also comprises be used to member that yarn is separated before entering first Room, so that the outer surface that the fluoropolymer resin precursor can winding yarns flows.
And for example Chinese patent application 200510041290.5 discloses a kind of pultrusion method of thermoplastic composite, use fortifying fibre and matrix fiber to make raw material, comprise the steps: A. with matrix fiber and fortifying fibre by 95～20: 5～80 weight ratio is positioned on the creel; B. by the desired proportion of fibers of final section bar fortifying fibre and matrix fiber are sent into preheating chamber by twizzle, guide plate and carry out preheating; C. will send into preforming mould through the composite fibre bundle of preheating, make the entrance shape of fibre bundle shape near shaping mould; D. preformed composite fibre is sent into shaping mould.Preforming mould and shaping mould can certainly be united two into one, on a mould, be divided into preformed section and profiled section; E. the section bar that comes out from shaping mould promptly makes finished product behind cooling and shaping.This invention is intended to overcome the difficulty of heavy polymer dipping, improves the dipping effect of thermoplastic composite, and the mechanical property of thermoplastic composite is significantly improved.
In existing pultrusion equipment, usually organdy and felt glue on open glue drill traverse, because of the effumability of glue causes the not enough environmental protection of working environment, and the stability of glue viscosity also is difficult to guarantee in the pultrusion process, directly affects product quality; Industry demands effectively controlling the technology appearance of glue volatilization urgently, to realize environmental protection production.
Summary of the invention
Problem to be solved by this invention is to overcome the above-mentioned defective that aforementioned techniques exists, and a kind of glue injection units and injecting glue mould of frp pipe pultrusion glue filling device are provided.
Primary and foremost purpose of the present invention provides a kind of glue injection units, to finish the work of dipping organdy and felt in the mould that is implemented in sealing by the injection glue;
Another purpose of the present invention provides a kind of injecting glue mould that is used for aforementioned glue injection units.
Glue injection units technical solution problem of the present invention takes following technical scheme to realize, according to a kind of glue injection units provided by the invention, comprise injecting glue mould and the hollow mandrel that enters the pultrusion mould of bootable fiberglass moulding material, wherein, described injecting glue mould is provided with and holds the mandrel through hole that mandrel passes, along this mandrel through hole injecting cavity is set, between the adjacent injecting cavity negative pressure cavity is set.
Glue injection units technical solution problem of the present invention can also take following technical scheme further to realize:
Aforesaid glue injection units, wherein, described injecting cavity has the injecting cavity reaming of diameter greater than the mandrel through hole, forms between this injecting cavity reaming and the mandrel to hold the gap of glue around mandrel.
Aforesaid glue injection units, wherein, described negative pressure cavity has the negative pressure cavity reaming of diameter greater than the mandrel through hole, forms the gap of satisfying default negative pressure value between this negative pressure cavity reaming and the mandrel.
Aforesaid glue injection units, wherein, described injecting cavity setting can be around the filled glue hole for injecting glue of mandrel; The mode that this glue hole for injecting glue Cheng Keyu glue output mouth of pipe is connected disposes.
Aforesaid glue injection units, wherein, described mandrel has the injecting glue axle center hole that can hold the glue input, at the mandrel predeterminated position radially hole for injecting glue is set.
Aforesaid glue injection units, wherein, tapered hole or back tapered hole before the end of described injecting cavity reaming, negative pressure cavity reaming is provided with respectively.
Aforesaid glue injection units, wherein, the mandrel of the mandrel through hole of described injecting glue mould enters stomidium and has preset length, and the mandrel of this mandrel through hole stretches out stomidium and has preset length; Equal preset length at interval between first injecting cavity and the negative pressure cavity, between negative pressure cavity and second injecting cavity forms first mesozone, second mesozone of mandrel through hole.
Aforesaid glue injection units, wherein, the prepsetting gap that forms between described first injecting cavity reaming and the mandrel is slightly larger than or equals the pipe thickness of pultrusion pipe profile.
Aforesaid glue injection units, wherein, the mandrel through hole that the one-body molded appearance mandrel of injecting glue mould passes is along coaxial successively first injecting cavity, negative pressure cavity and second injecting cavity of being provided with of this mandrel through hole; The mandrel of mandrel through hole enters stomidium and has preset length, and the mandrel of this mandrel through hole stretches out stomidium and has preset length.
Injecting glue mould technical solution problem of the present invention takes following technical scheme to realize, according to a kind of injecting glue mould that is used for aforementioned arbitrary glue injection units provided by the invention, wherein, the injecting glue mould is assembled into one by the first mould type piece, the second mould type piece, the 3rd mould type piece, the 4th mould type piece, the 5th mould type piece, the 6th mould type piece, the 7th mould type piece; The second mould type piece, the 6th mould type piece form the aforesaid first injecting cavity reaming and the second injecting cavity reaming respectively; The 4th mould type piece forms the negative pressure cavity reaming; The first mould type piece forms mandrel and enters stomidium, and the 7th mould type piece forms mandrel and stretches out stomidium; The 3rd mould type piece forms the aforesaid first back tapered hole and first mesozone and the 3rd preceding tapered hole; The 5th mould type piece forms aforementioned the 3rd back tapered hole and second mesozone and the second preceding tapered hole; Has the seal construction that prevents that glue from revealing between each mould type piece.
The present invention compared with prior art has significant advantage and beneficial effect.
By above technical scheme as can be known, the present invention has following advantage at least under the structure configuration of excellence:
The injecting glue mould reasonable disposition that this case glue injection units is provided with injecting cavity and negative pressure cavity structure, thereby can be implemented in the work of finishing dipping organdy and felt in the die device of sealing by the injection glue, not only the problem of effectively having avoided glue to volatilize wantonly also can effectively guarantee the stability of glue viscosity in whole pultrusion process; This case provides integrated mould and two kinds of embodiments of mould type piece, and the industry that is easier to is promoted;
The configuration of this case mandrel and injecting cavity can guarantee effectively that the inwall of pultrusion hollw article, outer wall impregnation are even; The reasonable structure of this case injecting glue mould can make the better effects if of soaking into of dipping organdy and felt, and loss is few;
The ingenious mandrel that is provided with preset length of this case injecting glue mould enters stomidium and mandrel stretches out stomidium, first mesozone, second mesozone, can effectively avoid mandrel to produce amount of deflection when passing first injecting cavity, negative pressure cavity, second injecting cavity;
The present invention is simple in structure, and is cheap for manufacturing cost, and the industry that is easy to is reproduced, and technical contribution is remarkable, has realized aforesaid every goal of the invention fully.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is a pultrusion glue filling device overall structure schematic diagram of the present invention;
Fig. 2 is a glue injection units structural representation of the present invention;
Fig. 3 is the another embodiment structural representation of glue injection units structure of the present invention;
Fig. 4 is a pultrusion glue filling device pneumatic structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with preferred embodiment, to according to the specific embodiment provided by the invention, feature and effect thereof, describe in detail as after; For simple and purpose clearly, hereinafter appropriate omission the description of known technology, in order to avoid those unnecessary details influences are to the description of the technical program.
Shown in Fig. 1-4, a kind of glue injection units of frp pipe pultrusion glue filling device and injecting glue mould,
Glue filling device comprises supply glue unit 1, wherein, supply glue unit 1 and glue injection units 2 by glue transfer pipeline 6 being connected to the mode that glue injection units is injected preset pressure; This glue injection units 2 is fixedlyed connected by flange 24 with pultrusion die 3, and glue injection units 2 coexists one with pultrusion die 3 and draws on the axis;
Along coaxial successively first injecting cavity 211, negative pressure cavity 213 and second injecting cavity 212 of being provided with of the mandrel through hole of injecting glue mould;
Equal preset length at interval between first injecting cavity 211 and the negative pressure cavity 213, between negative pressure cavity 213 and second injecting cavity 212, form first mesozone 2103, second mesozone 2104 of mandrel through hole, this structure can effectively carry out " squeezing ", " holding " to organdy and felt, to guarantee the impregnation quality of organdy and felt; Also can avoid mandrel when passing first injecting cavity, negative pressure cavity, second injecting cavity, to produce amount of deflection.
Described first injecting cavity 211 has the first injecting cavity reaming 2110 of diameter greater than the mandrel through hole, the gap that forms between this first injecting cavity reaming and the mandrel has constituted the appearance glue around the full chamber of the glue of mandrel, form prepsetting gap between described first injecting cavity reaming and the mandrel, this gap d is slightly larger than or equals the pipe thickness of pultrusion pipe profile, the more favourable glue that soaks into;
This first injecting cavity reaming, one end forms the first preceding tapered hole 2111 in the middle of mandrel enters stomidium 2101, this first injecting cavity reaming other end forms the first back tapered holes 2112 in the middle of first mesozone 2103; Tapered hole can be so that organdy and felt touch the full chamber portion of glue gradually in advancing before being somebody's turn to do, and back tapered hole can be gone out the full chamber portion of glue by pultrusion gradually so that fill the organdy and the felt of glue, entered down preface;
Described second injecting cavity 212 is identical with first injecting cavity, 211 structures, have the second injecting cavity reaming 2120 of diameter greater than the mandrel through hole, the gap that forms between this second injecting cavity reaming and the mandrel has constituted the appearance glue around the full chamber of the glue of mandrel, this second injecting cavity reaming, one end forms the second preceding tapered hole 2121 in the middle of second mesozone 2104, this second injecting cavity reaming other end forms the second back tapered holes 2122 in the middle of mandrel stretches out stomidium 2102; This second injecting cavity is responsible for to the mandrel that wraps organdy and felt injecting glue once more, so that the glue that injects soaks into the yarn felt more fully; Also form prepsetting gap between described second injecting cavity reaming and the mandrel;
Described negative pressure cavity 213 has the negative pressure cavity reaming 2130 of diameter greater than the mandrel through hole, this negative pressure cavity reaming one end forms the 3rd preceding tapered hole 2131 in the middle of first mesozone 2103, this negative pressure cavity reaming other end forms the 3rd back tapered holes 2132 in the middle of second mesozone 2104; The effect of negative pressure cavity is to strengthen the effect that yarn and felt soak into by the negative pressure that applies preset value; The same prepsetting gap that forms between this negative pressure cavity reaming and the mandrel;
Injecting glue mould 21 can be integrated, as figure
Shown in, this set is simple structure both, can effectively prevent the glue leakage again, is fit to the production of calibration tube section bar in batches;
Injecting glue mould 21 also can be that promptly the first mould type piece 21-1, the second mould type piece 21-2, the 3rd mould type piece 21-3, the 4th mould type piece 21-4, the 5th mould type piece 21-5, the 6th mould type piece 21-6, the 7th mould type piece 21-7's different mould type pieces are assembled into one by cover body 214, referring to shown in Figure 3, wherein
The second mould type piece 21-2, the 6th mould type piece 21-6 form the aforesaid first injecting cavity reaming 2110 and the second injecting cavity reaming 2120 respectively;
The 4th mould type piece 21-4 forms negative pressure cavity reaming 2130;
The first mould type piece 21-1 forms aforesaid mandrel and enters stomidium 2101, the seven mould type piece 21-7 and form aforesaid mandrel and stretch out stomidium 2102;
The 3rd mould type piece 21-3 forms the aforesaid first back tapered hole 2112 and first mesozone 2103 and the 3rd preceding tapered hole 2131;
The 5th mould type piece 21-5 forms aforementioned the 3rd back tapered hole 2132 and second mesozone 2104 and the second preceding tapered hole 2121;
Have seal construction between each mould type piece, prevent the glue leakage, as shown in Figure 3;
Design can be adjusted the preset length of first injecting cavity 211, negative pressure cavity 213, second injecting cavity 212 by changing second, four, six mould type pieces thus, and is simple and easy to do;
Assembly by different mould type pieces can form different mold cavities, satisfy the needs of pultrusion different size section bar, this set compatibility is strong, can be according to the specification difference of pultrusion product, adjust the radial dimension and the axial dimension of injecting cavity easily, can effectively save the manufacturing cost and the cycle of mould;
First injecting cavity of glue injection units, the second injecting cavity position are provided with respectively can be around the mandrel filled first glue hole for injecting glue 201, the second glue hole for injecting glue 202; The first adhesive pouring nozzle element 20a, the second adhesive pouring nozzle element 20b dispose in the mode that glue hole for injecting glue and the glue output mouth of pipe is connected;
During industry is implemented, the quantity of glue hole for injecting glue and arrange and to change according to the different of the difference in pultrusion product cross section and resin adhesive liquid, wrapping the glass fiber yarn of drawing from last preface, the hollw article of felt will pass through in the middle of injection molding along mandrel, glue will inject in the radial and axial direction of mandrel, effect with assurance pultrusion hollw article inwall impregnation is even, thereby glass fiber yarn, felt pass each injecting cavity and enter the pultrusion die moulding under the mandrel guiding;
The negative pressure cavity position of glue injection units is provided with the test section unit 4 of glue position, this test section unit can be by existing technology, as realizing detecting by magnetic induction principle with the float that magnetic material is installed, and indicator lamp is set shows, also can be connected, thereby but the regulatory function of glue is injected in realization with controlling organization.
Described mandrel 26 has the injecting glue axle center hole (not shown) of connecting with the glue transfer pipeline, at the mandrel predeterminated position radially hole for injecting glue (not shown) is set, the setting of this injecting glue axle center hole and radial hole combines with the glue injection cavities of injecting glue mould coupling, can realize section bar inner and outer wall injecting glue simultaneously, guarantee the injecting glue quality.
Referring to accompanying drawing 3 are situations in the negative pressure cavity position of glue injection units installation and measuring portion unit 4;
Setting element 271,272,273,274 is used to separate the location first adhesive pouring nozzle element 20a, test section unit 4 and the second adhesive pouring nozzle element 20b; 25 is end cap component, fixedly each functor on the injecting cavity;
Supply glue unit 1 has the pneumatic element that is connected with air pump, as commercially available pneumatic triple piece 11, this pneumatic element is connected in series the pressure regulator valve 12 of adjusting circuit pressure, the one-way throttle valve 13 of adjusting the loop throughput successively, this one-way throttle valve is connected in series with storage glue jar group 15, and this storage glue jar group can provide the glue with pressure; This storage glue jar group is made up of the first storage glue jar 151 and the second storage glue jar 152, this first storage glue jar becomes the parallel way configuration with the second storage glue jar, the inlet end of the first storage glue jar and the second storage glue jar disposes the valve 1511,1521 of break-make loop air-flow respectively, the glue output of the first storage glue jar and the second storage glue jar disposes the valve 1512,1522 of break-make glue respectively, the simple structure control of glue supply of being more convenient for thus, promptly can be a storage glue jar supply glue, also can be that two storage glue jars are supplied glue simultaneously;
Described storage glue jar group includes but not limited to the parallel way configuration of two storage glue jars, can also be the parallel connection of a plurality of storage glue jar, satisfies different needs; The described first storage glue jar is identical with the second storage glue jar structure, is example with the first storage glue jar, and the first storage glue jar top is set to glue chamber 151a, and the bottom is compressed air cell 151b, and the compressed-air actuated common pressure of injection is≤0.8Mpa; The control valve (not shown) of control compressed air require is set on the first storage glue jar, and the specification of reason tubing and pultrusion speed different have different requirements to the demand and the glue injection rate of glue, and control valve is used to regulate injecting glue speed and injecting glue amount;
Glue transfer pipeline 6 has first and carries branch road 61, and the 26 one-tenth modes that can inject glue in the injecting glue axle center hole of mandrel of this first conveying branch road and mandrel are connected, to realize section bar inwall injecting glue;
The glue transfer pipeline has second and carries branch road 62, and this second conveying branch road is connected with the first glue hole for injecting glue 201 by the first adhesive pouring nozzle element 20a, realizes the task to the first injecting cavity injecting glue, to realize section bar outer wall injecting glue.
The glue transfer pipeline has the 3rd and carries branch road 63, the three to carry branch roads to be connected with the second glue hole for injecting glue 202 by the second adhesive pouring nozzle element 20b, and realization is to the task of the second injecting cavity injecting glue, with realization to section bar outer wall injecting glue once more.
Employing this case design, the glass reinforced plastic pipe section bar that is suitable for producing includes but not limited to pipe, square tube, can also be other special section tubular product, the die cavity of injecting glue mould and mandrel outer rim treat that the pipe profile of pultrusion is complementary and can realizes with complying with.
After the preferred embodiment that describes in detail, be familiar with this technology personage and can clearly understand, can carry out various variations and modification not breaking away under following claim and the spirit, and the present invention also is not subject to the embodiment of illustrated embodiment in the specification.
Claims (10)
1. glue injection units, comprise injecting glue mould (21) and the hollow mandrel that enters the pultrusion mould of bootable fiberglass moulding material, it is characterized in that, described injecting glue mould is provided with and holds the mandrel through hole (210) that mandrel (26) passes, along this mandrel through hole injecting cavity (211,212) is set, negative pressure cavity (213) is set between the adjacent injecting cavity.
2. glue injection units as claimed in claim 1 is characterized in that, described injecting cavity (211,212) has the injecting cavity reaming (2110,2120) of diameter greater than the mandrel through hole, forms between this injecting cavity reaming and the mandrel to hold the gap of glue around mandrel.
3. glue injection units as claimed in claim 1 or 2 is characterized in that, described negative pressure cavity (213) has the negative pressure cavity reaming (2130) of diameter greater than the mandrel through hole, forms the gap of satisfying default negative pressure value between this negative pressure cavity reaming and the mandrel.
4. glue injection units as claimed in claim 3 is characterized in that, described injecting cavity (211,212) setting can be around the filled glue hole for injecting glue (201,202) of mandrel; The mode that this glue hole for injecting glue Cheng Keyu glue output mouth of pipe is connected disposes.
5. as claim 1,2, one of 4 described glue injection units, it is characterized in that described mandrel (26) has the injecting glue axle center hole that can hold the glue input, at the mandrel predeterminated position radially hole for injecting glue is set.
6. glue injection units as claimed in claim 5 is characterized in that, tapered hole or back tapered hole before the end of described injecting cavity reaming, negative pressure cavity reaming is provided with respectively.
7. as claim 1,2,4, one of 6 described glue injection units, it is characterized in that the mandrel of the mandrel through hole (210) of described injecting glue mould enters stomidium (2101) and has preset length, the mandrel of this mandrel through hole stretches out stomidium (2102) and has preset length; Equal preset length at interval between first injecting cavity (211) and the negative pressure cavity (213), between negative pressure cavity (213) and second injecting cavity (212) forms first mesozone (2103), second mesozone (2104) of mandrel through hole.
8. glue injection units as claimed in claim 7 is characterized in that, the prepsetting gap that forms between described first injecting cavity reaming and the mandrel is slightly larger than or equals the pipe thickness of pultrusion pipe profile.
9. as claim 1,2,4,6, one of 8 described glue injection units, it is characterized in that, the mandrel through hole (210) that the one-body molded appearance mandrel of injecting glue mould (26) passes is along coaxial successively first injecting cavity (211), negative pressure cavity (213) and second injecting cavity (212) of being provided with of this mandrel through hole; The mandrel of mandrel through hole enters stomidium (2101) and has preset length, and the mandrel of this mandrel through hole stretches out stomidium (2102) and has preset length.
10. injecting glue mould that is used for the arbitrary glue injection units of aforementioned 1-8, it is characterized in that the injecting glue mould is assembled into one by the first mould type piece (21-1), the second mould type piece (21-2), the 3rd mould type piece (21-3), the 4th mould type piece (21-4), the 5th mould type piece (21-5), the 6th mould type piece (21-6), the 7th mould type piece (21-7); The second mould type piece (21-2), the 6th mould type piece (21-6) form the aforesaid first injecting cavity reaming (2110) and the second injecting cavity reaming (2120) respectively; The 4th mould type piece (21-4) forms negative pressure cavity reaming (2130); The first mould type piece (21-1) forms mandrel and enters stomidium (2101), and the 7th mould type piece (21-7) forms mandrel and stretches out stomidium (2102); The 3rd mould type piece (21-3) forms the aforesaid first back tapered hole (2112) and first mesozone (2103) and the 3rd preceding tapered hole (2131); The 5th mould type piece (21-5) forms aforementioned the 3rd back tapered hole (2132) and second mesozone (2104) and the second preceding tapered hole (2121); Has the seal construction that prevents that glue from revealing between each mould type piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100691460A CN101564899A (en) | 2009-06-05 | 2009-06-05 | Glue-injection unit of glass fiber reinforced plastic tubular product pultrusion glue-injection device and glue-injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100691460A CN101564899A (en) | 2009-06-05 | 2009-06-05 | Glue-injection unit of glass fiber reinforced plastic tubular product pultrusion glue-injection device and glue-injection mold |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103807723A Division CN102909869A (en) | 2009-06-05 | 2009-06-05 | Glue injection unit and glue injection mold for pultrusion glue injection device of glass reinforced plastic tube |
| CN2012103806932A Division CN102909868A (en) | 2009-06-05 | 2009-06-05 | Glue injection mold and glue injection unit for pultrusion glue injection device of glass reinforced plastic tube |
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| Publication Number | Publication Date |
|---|---|
| CN101564899A true CN101564899A (en) | 2009-10-28 |
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| CNA2009100691460A Pending CN101564899A (en) | 2009-06-05 | 2009-06-05 | Glue-injection unit of glass fiber reinforced plastic tubular product pultrusion glue-injection device and glue-injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179943A (en) * | 2011-03-10 | 2011-09-14 | 哈尔滨玻璃钢研究院 | Injection die for injection and pull-extrusion process and method for preparing resin matrix composite by using same |
-
2009
- 2009-06-05 CN CNA2009100691460A patent/CN101564899A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179943A (en) * | 2011-03-10 | 2011-09-14 | 哈尔滨玻璃钢研究院 | Injection die for injection and pull-extrusion process and method for preparing resin matrix composite by using same |
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Application publication date: 20091028 |