CN102896764B - Method for forming hollow box body provided with built-in component - Google Patents
Method for forming hollow box body provided with built-in component Download PDFInfo
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- CN102896764B CN102896764B CN201210280239.XA CN201210280239A CN102896764B CN 102896764 B CN102896764 B CN 102896764B CN 201210280239 A CN201210280239 A CN 201210280239A CN 102896764 B CN102896764 B CN 102896764B
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Abstract
The invention relates to a method for forming a hollow box body provided with a built-in component, which comprises the following steps: a) feeding, wherein two sheets of plasticizing parisons are respectively laid off to two gaps formed by a preformed template and a mold semi-mold; b) closing the mold semi-mold and the preformed template; c) performing the blow molding under high pressure; d) fracturing and fixing the sheet-shaped blanks; e) preheating the parison connected to the built-in component; f) opening a mold, removing the preformed template; g) fixing the built-in component; h) performing secondary closing on the mold; i) cooling a blade position of the mold, and blowing under high pressure to form the hollow box body. The invention provides a method for hollow blow molding of two sheets of plasticizing parisons, which increases the molding quality and yield of the product, the opening on the wall of a container can be reduced to minimum degree, and the invention provides an effective molding method for realizing the low leakage of the hollow box body.
Description
Technical field
The present invention relates to a kind of forming method of blow molding hollow box body, particularly a kind of hollow box body blow molding method being provided with installed with built-in component, be particularly useful for the field that fuel tank blowing manufactures.
Background technology
The extensive accreditation that automobile plastic fuel tank is lightweight with it, security performance good, anticorrosion, shock resistance, long service life and larger design freedom obtain client.HDPE6 layer coextrusion blow technology with EVOH fuel oil barrier layer is the mainstream technology that current plastic fuel tank manufactures.Along with the enhancing of world government environmental protection consciousness, relevant policy and regulation propose strict requirement to automobile main frame maker, as California, USA has put into effect PZEV and quasi-zero emission, and the regulation of < 20mg/24h.For the plastic fuel tank that mainstream technology is produced, it is general at hundreds of mg/24h in the leakage etc. of oil tank body, solder side and assembly parts, seal that its evapo tranpiration discharge comprises gasoline, so the discharge standard of PZEV is for very harsh plastic fuel tank.Simultaneously because main engine plants' power-saving technology is as the appearance of start-stop and PHEV, the noise caused because fuel oil rocks for fuel tank internal is obvious all the more when background noise reduces, therefore need to carry large-scale washboard structure in fuel tank inside, reduce the noise that fuel oil rocks, and washboard often can only be entered into fuel tank internal from oil pump opening or parison bottom mouth by traditional washboard, washboard size is restricted, therefore needs the larger technological design free degree.
In order to realize these targets, some fuel tank manufacturing enterprises all have breakthrough technically recently, and the TSBM technology as INERGY company adopts CORE structure to be realized the connection of built-in part and inner wall of oil tank parison by the assembly built-in mechanism of CORE inside when the preformed of two panels parison; The TAPT technique of TI company adopts based on traditional blow molding process, adopt certain moduli tool to be carried out by the fuel tank parison of pre-blow molding cutting the technique obtaining two panels parison, realize built-in part and inner wall of oil tank to be connected the blowing ducted body obtaining and be with built-in part afterwards.Parison preformed and the built-in process of assembly utilize CORE structure to carry out within the longer time by TSBM technology, are unfavorable for that the design freedom of frock improves, is unfavorable for Hough line Forming Quality do not possess the good visibility of debug process; And TAPT technology needs that first the shaping fuel tank completed is carried out cutting and is split into two halves, be unfavorable for the production efficiency improving fuel tank, the function of mould is complicated simultaneously, and frock is with high costs.How can while reduction equipment and product cost, improve the quality of products with the Fixture Design free degree and realize good process visuality, reduce the leakage rate of hollow box body as far as possible, and can built-in large-scale assembly such as washboard etc., be a problem needing solution badly.
Summary of the invention
The present invention is just for the technical problem existed in prior art, and provide one compared with prior art easy and simple to handle, cost is lower, quality good, and the Fixture Design free degree is large, can realize the hollow box body blow molding method with large-scale installed with built-in component.
In order to solve the problems of the technologies described above, technical scheme of the present invention is as follows: a kind of hollow box body forming method being provided with installed with built-in component, is characterized in that, said method comprising the steps of:
A) feed, this step is mainly the blanking of two panels plasticizing parison difference in two gaps that preformed template and mold halves are formed;
B) mold halves and preforming mould plate closing;
C) high pressure blow molding;
D) fracture of lamellar body parison is with fixing;
E) the parison preheating of installed with built-in component is connected;
F) mould is opened, and preformed template exits;
G) installed with built-in component is fixed;
H) mould secondary closes;
I) mold notch position cooling, blowing forms hollow box body.
As a modification of the present invention, the knife-edge positions place of described mould is provided with the temperature-adjusting device realizing cold water hot water handoff functionality, after mold halves and preforming mould plate closing, before high pressure blow molding, temperature-adjusting device is incubated parison by switching to hot water, parison herein needs to maintain higher temperature, mainly in order to keep the high temperature fused state of parison, improves final Forming Quality.After mould secondary is closed, temperature-adjusting device switches to cold water, realizes the cooling of mold notch position, and Main Function is the mechanical performance ensureing product edge of a knife shape and knife-edge part.
As a modification of the present invention, described preformed template is provided with heater, after high pressure blow molding completes, heater connects installed with built-in component parison position to needs and heats, heating and temperature control is at 130-170 degrees Celsius, and be preferably 150-160 degrees Celsius, heater can be contact-type heating device or non-contact thermal device, wherein contact-type heating device is hot plate heater block, and non-contact thermal device is infrared heating parts.It is general after high pressure blow molding completes 5-10 seconds, fuel tank profile basically forms, heater in preformed template contacts or the close position needing to connect installed with built-in component parison under the promotion of cylinder, oil cylinder or motor, the parison at this place is heated, temperature is preferably 150-160 degrees Celsius, Main Function is the uniformity ensureing parison temperature, the stability of improving the quality of products, too high or the too low inconsistency that all can cause parison temperature of temperature, and then affect one integral piece product quality.
As a modification of the present invention, after high pressure blow molding completes, by the cutting part be arranged on sheet body forming device, blank is cut, realize the fracture of lamellar body parison with fixing.Cutter sweep Main Function achieves the segmentation up and down of parison, meet fuel tank quantity-produced needs, in order to better realize cutting function, this cutting part can be provided with temp control switch, in addition, in order to prevent cutting part and parison adhesion, cutter sweep arranging one deck and prevents the coating bonding with parison material HDPE, such as polytetrafluorethylecoatings coatings or other fluorinated hydrocarbons; Wherein, cutting part be cutter or other there is the dispenser of dissection.
As a modification of the present invention, described installed with built-in component fixing step is, in this step, be fixedly mounted on the robot arm on main frame part built-in for the need of clamping is moved between mould to need built-in position, with cylinder on robot arm, the thrust unit such as oil cylinder or motor, for the parison of built-in part with mold cavity inside is connected, this connection can adopt welding, one in the mode of welding or riveted joint, generally need carrying out hot plate or infrared preheating before when adopting welding or fusion joining process, so that better realize switching performance.
As a modification of the present invention, described preformed template is provided with parison fixture, in the fracture of lamellar body parison and fixing step, after parison fracture, by parison fixture, parison is fixed on mould upstream.After realizing fracture, main frame leaves die head blanking position, the top of preforming mould panel assembly has parison fixture, by the movement of cylinder, oil cylinder or motor pushing baffle plate, the parison top after fracture is realized to be pushed into pressure effect at mould upstream and auxiliary certain, play and parison top is fixed on mould upstream surface, prevent the parison top in subsequent step from coming off, shaping oeverall quality is impacted.
As a modification of the present invention, described preformed template is provided with blowning installation, described blowning installation is the blow head of band divergence expression, blow head is set to porous hollow spherical structure, this structure can realize the even air blowing to all directions, ensures that all directions position of parison in preform process all evenly fits to die cavity inwall.This structure is different from traditional blow needle that thrusts and blows.This blowing method pushes two panels parison to mold cavity surface under high pressure blow-gas effect, and realize the first one-step forming of fuel tank upper-lower casing, this process often completes within a few second, the shaping shape substantially achieving oil tank body of fuel tank shell of this process; This blowing method can significantly improve production efficiency, can form the shape of good Hough line, further ensure product quality.
As a modification of the present invention, described preformed template is also provided with sealing device, be used for mould, seal between parison and preformed template, not only prevent the leakage of high pressure blow-gas from causing shaping deficiency, also prevent the generation exchanging the rapid reduction causing parison temperature with external heat, the parison preformed function realizing in this step with this; Described sealing device is sealing strip.Sealing bar can adopt has the organic of some strength or inorganic material, such as polytetrafluoroethylene (PTFE) or magnadure etc., and for the requirement of heat conductivility and loss of weight, better selecting is the light material of magnadure.The overlap parison outside the edge of a knife is extruded when preformed, realize the sealing of mould, preformed template and parison during preformed, the phenomenon of gas leakage can not be produced like this under the effect of pre-blowing pressure, because easily cause parison formation not enough once produce gas leakage, and cause inside and outside exchange heat, cause the undue crystallisation by cooling of parison, hardening, cause the built-in part in later stage to be connected to quality inside parison and knife-edge part fusion quality poor, thus affect the quality of whole product.
Relative to prior art, tool of the present invention has the following advantages,
(1) be with the blow head of divergence expression, the even air blowing of all directions can be realized, ensure that each position of parison evenly fits to die cavity inwall in preform process.This process is complete within a few second, not only improves production efficiency, and forms good Hough line, ensures the quality of product.
(2) contact and non-contact thermal device, contact heating generally can be understood as the mode of hot plate heating, and non-contact thermal generally can be understood as infrared heating mode.Heat by needing the parison realizing the parison position that built-in part connects to the later stage, prevent the too low situation of quality of connection difference that causes of parison temperature from occurring, this heating function is conducive to the stable of preform surface temperature simultaneously, the temperature of link position is controlled, reducing temperature fluctuation, is the scheme of a kind of effective raising installed with built-in component and ducted body quality;
(3) at parison preform stage, two panels parison fracture is later by parison fixture, parison is fixed on mould upstream surface, prevent parison preformed terminate rear upper overlap big-eared under, avoid mould when second time is closed, cause the quality risk that formed product is under contouring, knife-edge part forms the material that becomes silted up;
(4) preforming mould panel assembly has a sealing strip in the outside of the corresponding edge of a knife, realizes the sealing of mould, preformed template and parison during preformed, can not produce the phenomenon of gas leakage like this under the effect of pre-blowing pressure.
(5) entirety of preforming mould panel assembly has the function of heating, extraneous die heater is utilized to heat preforming mould panel assembly, temperature generally remains on more than 80 degrees Celsius, to prevent from preform process, in the too fast cooling of the parison of knife-edge positions, being unfavorable for the raising of edge of a knife quality when final mould closes.
The invention provides the method for a kind of two panels plasticizing parison ducted body blow molding, achieve the connection of installed with built-in component and inner wall of oil tank, punch with tradition and weld such as valve, the parts such as joint are compared, decrease the opening of fuel tank, decrease the discharge of the HC compound from solder side, decrease the pollution to environment, meet the requirement of the Abgasgesetz of Special section; Profile simultaneously due to internal zero setting part is almost unrestricted, adds the design freedom of the built-in parts such as large assemblies such as washboard, meets the performance of fuel tank wave resistance noise reduction better.The present invention also by the use of preforming mould panel assembly, improve Forming Quality and the finished product rate of product, the opening on chamber wall is minimized, providing an effective forming method for realizing the low leakage of shaping hollow box body.
Accompanying drawing explanation
Fig. 1 is this feed view;
Fig. 2 is this mold halves and preformed template closed schematic diagram first;
Fig. 3 is this preformed template exit status schematic diagram;
Fig. 4 is that installed with built-in component fixes schematic diagram;
Fig. 5 is mold halves and preformed template secondary closure schematic diagram;
Fig. 6 is that mold halves is opened preparation and entered next cycle view;
Fig. 7 is the Oiltank structure schematic diagram formed.
In figure: 1 is parison, 2 is mold halves, and 3 is preformed template, and 4 is heater, and 5 is robot arm, 6 is parison fixture, and 7 is blowning installation, and 8 is sealing strip, and 9 is power set, 10 is base, and 11 is temperature-adjusting device, and 12 is heater, and 13 is fuel tank.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with accompanying drawing, 1-7 couples of the present invention are described in detail.
embodiment 1:
Be provided with a hollow box body forming method for installed with built-in component, said method comprising the steps of:
See Fig. 1, a) feed step, preformed template 3 and mold halves 2 are arranged on base 10 by power set 9, when two panels plasticizing parison starts blanking, preformed template and mold halves move to below parison 1, and the blanking of the parison 1 of two panels plasticizing subsequently difference is in two gaps that preformed template 3 and mold halves 2 are formed.See Fig. 2, b) mold halves 2 closes with preformed template 3; The knife-edge positions place of mould is provided with the temperature-adjusting device 11 realizing cold water hot water handoff functionality, after mold halves 2 and preformed template 3 are closed, before high pressure blow molding, temperature-adjusting device is incubated parison by switching to hot water, parison herein needs to maintain higher temperature, mainly in order to improve final Forming Quality.C) high pressure blow molding; The parison 1 be clipped in the middle of mold halves 2 and preformed template 3 is adjacent to mold halves 2 blowing preformed by the air-breathing that vacuumizes on blowning installation 7 that preformed template is carried and/or mould.D) fracture of lamellar body parison is with fixing; After high pressure blow molding completes, by the cutting part be arranged on sheet body forming device, blank is cut, realize the fracture of lamellar body parison with fixing.Cutter sweep Main Function achieves the segmentation up and down of parison, meet fuel tank quantity-produced needs, in order to better realize cutting function, this cutting part can be provided with temp control switch, in addition, in order to prevent cutting part and parison adhesion, cutter sweep arranging one deck and prevents the coating bonding with parison material HDPE, such as polytetrafluorethylecoatings coatings or other fluorinated hydrocarbons; Wherein, cutting part be cutter or other there is the dispenser of dissection.Described preformed template is provided with parison fixture 6, in the fracture of lamellar body parison and fixing step, after parison fracture, by parison fixture 6, parison is fixed on mould upstream.After realizing fracture, main frame leaves die head blanking position, the parison fixture 6 on the top of preforming mould panel assembly, by the movement of cylinder, oil cylinder or motor pushing baffle plate, the parison top after fracture is realized to be pushed into pressure effect at mould upstream and auxiliary certain, play and parison top is fixed on mould upstream surface, prevent the parison top in subsequent step from coming off, shaping oeverall quality is impacted.E) the parison preheating of installed with built-in component is connected; Preformed template is provided with heater 4, after high pressure blow molding completes, heater connects installed with built-in component parison position to needs and heats, heating and temperature control is at 130-170 degrees Celsius, be preferably 150-160 degrees Celsius, heater can be contact-type heating device or non-contact thermal device, and wherein contact-type heating device is hot plate heater block, and non-contact thermal device is infrared heating parts.It is general after high pressure blow molding completes 5-10 seconds, fuel tank profile basically forms, heater 4 in preformed template contacts or the close position needing to connect installed with built-in component parison under the promotion of cylinder, oil cylinder or motor, the parison at this place is heated, temperature is preferably 150-160 degrees Celsius, Main Function is the uniformity ensureing parison temperature, the stability of improving the quality of products, too high or the too low inconsistency that all can cause parison temperature of temperature, and then affect one integral piece product quality.See Fig. 3, f) mold halves 2 opens, and preformed template 3 exits mold halves under the drive of power set; Open at mould in the process exited with preformed template, after the baffle effect of mould vacuum and preforming mould panel assembly, parison achieves mold cavity, and preforming mould panel assembly realizes and being separated of mold halves 2 and parison 1 thereof smoothly, and exits the position between mold halves.See Fig. 4, g) installed with built-in component fixes; Installed with built-in component fixing step is, in this step, part built-in for the need of clamping moves between mold halves 2 by the robot arm 5 be fixedly mounted on main frame needs built-in position, with thrust units such as cylinder, oil cylinder or motors on robot arm 5, for the parison of built-in part with mold cavity inside is connected, this connection can adopt the one in the mode of welding, welding or riveted joint, generally need carrying out hot plate or infrared preheating before, so that better realize switching performance when adopting welding or fusion joining process.
See Fig. 5, h) mould secondary close; After mould secondary is closed, temperature-adjusting device switches to cold water at once, realizes the cooling of mold notch position, and Main Function is the mechanical performance ensureing product edge of a knife shape and knife-edge part.I) mold notch position cooling, blowing forms hollow box body; In mould second time in closed and final blow molding forming step, robot arm 5 realizes, by after installed with built-in component and the connection of inner wall of oil tank, returning initial position, preparing to clamp another set of installed with built-in component and enter the next cycle.Close die half module 2 and pre-shaping parison, now the water channel internal hot-water at mold notch place switches to cold water, during close die, cooling is realized to knife-edge part, ensure the mechanical performance of product edge of a knife shape and knife-edge part, the most at last with the pre-shaping parison base blow molded plastic hollow box body of assembly, see Fig. 7, robot arm 5 clamping device in this process is also provided with camera head, the weld parts face being connected to inwall can be taken, and by image recognition, link position and shape are monitored, prevent the part of bad connection from causing the difference of properties of product, guarantee product quality further.
embodiment 2:blowning installation is set to the blow head being with divergence expression, and blow head is set to porous hollow spherical structure, and this structure can realize evenly blowing to all directions, ensures that all directions position of parison in preform process all evenly fits to die cavity inwall.At mould, namely blown by the blow head in preformed template after preforming mould panel assembly and parison close, pore simultaneously on mould also needs to open vacuum and inhales the function that parison plays assistant formation, prevent from coming off from die cavity for adsorbing parison in follow-up process simultaneously, this structure is different from traditional blow needle that thrusts and blows, this blowing method pushes two panels parison to mold cavity surface under high pressure blow-gas effect, realize the first one-step forming of fuel tank upper-lower casing, this process often completes within a few second, the shaping shape substantially achieving oil tank body of fuel tank shell of this process, this blowing method can significantly improve production efficiency, can form the shape of good Hough line, further ensure product quality.
embodiment 3: preformed template 2 is also provided with sealing device, be used for mould, seal between parison and preformed template, not only prevent the leakage of high pressure blow-gas from causing shaping deficiency, also prevent the generation exchanging the rapid reduction causing parison temperature with external heat, ensure the preformed realization of parison in this step with this; Described sealing device can be set to sealing strip 8, and sealing strip can adopt has the organic of some strength or inorganic material, such as polytetrafluoroethylene (PTFE) or magnadure etc., and for the requirement of heat conductivility and loss of weight, better selecting is the light material of magnadure.The overlap parison outside the edge of a knife is extruded when preformed, realize the sealing of mould, preformed template and parison during preformed, the phenomenon of gas leakage can not be produced like this under the effect of pre-blowing pressure, because easily cause parison formation not enough once produce gas leakage, and cause inside and outside exchange heat, cause the undue crystallisation by cooling of parison, hardening, cause the built-in part in later stage to be connected to quality inside parison and knife-edge part fusion quality poor, thus affect the quality of whole product.
embodiment 4:in order to improve production technology efficiency, in parison pre-blowing forming process, can carry out heating action by heater 12 pairs of installed with built-in component, the random time can also fixing beginning at installed with built-in component carries out warm operation.
It should be noted that above-described embodiment, is only preferred embodiment of the present invention, is not used for limiting protection scope of the present invention, and equivalents done based on the above method all belongs to protection scope of the present invention.
Claims (11)
1. be provided with a hollow box body forming method for installed with built-in component, it is characterized in that, said method comprising the steps of:
A) feed, this step is mainly the blanking of two panels plasticizing parison difference in two gaps that preformed template and mold halves are formed;
B) mold halves and preforming mould plate closing;
C) high pressure blow molding;
D) fracture of lamellar body parison is with fixing;
E) the parison preheating of installed with built-in component is connected;
F) mould is opened, and preformed template exits;
G) installed with built-in component is fixed;
H) mould secondary closes;
I) mold notch position cooling, high pressure blowing, forms hollow box body.
2. the hollow box body forming method being provided with installed with built-in component according to claim 1, it is characterized in that, the knife-edge positions place of described mould is provided with the temperature-adjusting device realizing cold water hot water handoff functionality, after mold halves and preforming mould plate closing, before high pressure blow molding, temperature-adjusting device is incubated parison by switching to hot water; After mould secondary is closed, temperature-adjusting device switches to cold water, realizes the cooling of mold notch position.
3. the hollow box body forming method being provided with installed with built-in component according to claim 1, it is characterized in that, described preformed template is provided with heater, after high pressure blow molding completes, heater connects installed with built-in component parison position to needs and heats, and heating and temperature control is at 130-170 degrees Celsius.
4. the hollow box body forming method being provided with installed with built-in component according to claim 1, it is characterized in that, after high pressure blow molding completes, by the cutting part be arranged on sheet body forming device, blank is cut, realize the fracture of lamellar body parison with fixing.
5. the hollow box body forming method being provided with installed with built-in component according to claim 1-4 any one, it is characterized in that, described installed with built-in component fixing step is, by robot arm, installed with built-in component is connected to desired location, described connected mode adopts the one in welding or welding or riveted joint.
6. the hollow box body forming method being provided with installed with built-in component according to claim 1-4 any one, it is characterized in that, described preformed template is provided with parison fixture, in the fracture of lamellar body parison and fixing step, after parison fracture, by parison fixture, parison is fixed on mould upstream.
7. the hollow box body forming method being provided with installed with built-in component according to claim 1-4 any one, it is characterized in that, described preformed template is provided with blowning installation, and described blowning installation is the blow head of band divergence expression, and blow head is set to porous hollow spherical structure.
8. the hollow box body forming method being provided with installed with built-in component according to claim 1-4 any one, is characterized in that, described preformed template is also provided with sealing device.
9. the hollow box body forming method being provided with installed with built-in component according to claim 8, is characterized in that, described sealing device is sealing strip.
10. the hollow box body forming method being provided with installed with built-in component according to claim 3, it is characterized in that, described heater is contact-type heating device or non-contact thermal device, wherein contact-type heating device is hot plate heater block, and non-contact thermal device is infrared heating parts.
The 11. hollow box body forming methods being provided with installed with built-in component according to claim 4, it is characterized in that, described cutting part is cutter or the dispenser with dissection, and described cutting part is provided with the coating preventing bonding parison.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210280239.XA CN102896764B (en) | 2012-08-08 | 2012-08-08 | Method for forming hollow box body provided with built-in component |
| PCT/CN2012/081100 WO2014023053A1 (en) | 2012-08-08 | 2012-09-07 | Method for forming hollow box body provided with built-in component |
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| CN201210280239.XA CN102896764B (en) | 2012-08-08 | 2012-08-08 | Method for forming hollow box body provided with built-in component |
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| CN102896764B true CN102896764B (en) | 2015-03-18 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286939B (en) * | 2013-05-06 | 2014-07-23 | 亚普汽车部件股份有限公司 | Two-sheet blow molding hollow casing moulding method with auxiliary male mould |
| CN103358558B (en) * | 2013-07-08 | 2016-06-08 | 亚普汽车部件股份有限公司 | A kind of for oil port forming method and preparation facilities in two panels blow molding process |
| CN103722728A (en) * | 2014-01-10 | 2014-04-16 | 亚普汽车部件股份有限公司 | Method for forming hollow body of cellular wave-proof plate connected to side surface and novel wave-proof plate |
| CN103753799B (en) * | 2014-01-10 | 2017-04-12 | 亚普汽车部件股份有限公司 | Blow molding fuel tank fixing structure and forming method |
| CN104943201B (en) * | 2015-06-30 | 2017-03-08 | 北京化工大学 | Manipulator manipulation magnetic fluid pressure presses shaped device and method |
| CN104924586B (en) * | 2015-07-01 | 2017-07-07 | 宁波方正汽车模具有限公司 | Fuel tank mould |
| CN105539125A (en) * | 2016-02-03 | 2016-05-04 | 亚普汽车部件股份有限公司 | Hollow box body inside reinforcing assembly and hollow box body production method |
| CN110667017B (en) * | 2019-10-08 | 2021-10-12 | 平湖新仕鑫新材料股份有限公司 | Shaping equipment for positioning luggage accurately by utilizing air pressure |
| CN112706385A (en) * | 2021-01-25 | 2021-04-27 | 亚普汽车部件股份有限公司 | Hollow body built-in part mounting method and auxiliary mechanism |
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| JPS57131526A (en) * | 1981-02-09 | 1982-08-14 | Katashi Aoki | Blow molding method of synthetic resin bottle |
| AU3220984A (en) * | 1983-08-22 | 1985-02-28 | Colgate-Palmolive Pty. Ltd. | Parison blow moulding |
| NZ264737A (en) * | 1993-10-22 | 1996-08-27 | A K Tech Lab Inc | Injection stretch blow moulding of polyethylene |
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