CN111421790B - Method for processing blow molding products using extrusion blow molding molds - Google Patents
Method for processing blow molding products using extrusion blow molding molds Download PDFInfo
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- CN111421790B CN111421790B CN202010365098.6A CN202010365098A CN111421790B CN 111421790 B CN111421790 B CN 111421790B CN 202010365098 A CN202010365098 A CN 202010365098A CN 111421790 B CN111421790 B CN 111421790B
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- mold
- extrusion blow
- blow molding
- parison
- cavity
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- 238000010101 extrusion blow moulding Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000000071 blow moulding Methods 0.000 title abstract description 7
- 238000001125 extrusion Methods 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 230000001419 dependent effect Effects 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims 4
- 230000007704 transition Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 12
- 238000003825 pressing Methods 0.000 description 11
- 238000007664 blowing Methods 0.000 description 10
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 6
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 6
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920003182 Surlyn® Polymers 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 239000002318 adhesion promoter Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/48185—Moulds with more than one separate mould cavity
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an extrusion blow molding die and a method for processing blow molding products by using the extrusion blow molding die, and belongs to the technical field of plastic dies. The problem that the weight proportion of flash is large when the existing extrusion blow molding processing of small-capacity containers is solved. When the two sets of extrusion blow molding dies are arranged along the axial lead direction of the container die cavity, one end face of one set of extrusion blow molding die can be abutted against the other end face of the other set of extrusion blow molding die, and the protruding head of the one set of extrusion blow molding die is embedded into the groove of the other set of extrusion blow molding die. In a method of processing a blow molded product using an extrusion blow mold, a parison breaks between a first mold and a second mold during separation of the first mold from the second mold. The extrusion blow molding die is used for producing products, the weight ratio of flash in blow molding parts is obviously reduced, the flash production is reduced by more than 30 percent, and the bottom of a container does not need flash cutting processing.
Description
Technical Field
The invention belongs to the technical field of plastic processing, and relates to a blow molding processing method, in particular to a method for processing blow molding products by using an extrusion blow molding die.
Background
Extrusion blow molding is a method of manufacturing hollow thermoplastic articles such as bottles, drums, tanks, boxes, and containers for packaging food, beverages, cosmetics, pharmaceuticals, and commodity products.
The traditional extrusion blow molding process consists of 5 steps, namely, 1, extruding a plastic parison, namely, a hollow plastic pipe, 2, closing a split mold on the parison, clamping a mold and cutting the parison, 3, blowing the parison against the cold wall of a mold cavity, adjusting an opening and maintaining a certain pressure during cooling, 4, opening the mold, discharging the blown part, and 5, trimming flash to obtain a finished product. When small volume (500 ml or less) containers are processed by conventional extrusion blow molding processes, the flash weight in the blow molded part is relatively large, typically 25% or more, even more than 40%.
A container has a sandwich layer made of EVOH material, such as a method and apparatus for manufacturing a container (application number 200780009337.7), an outer container made of PP or PET-G, and an inner bag made of three layers, EVOH, an adhesion promoter layer, surlyn or Lupolen. EVOH has a much higher market price than PP, PET-G, surlyn or Lupolen. The EVOH layer in the flash can not be separated out efficiently, namely the EVOH material can not be recycled independently, so that the weight ratio of the flash in the blow molding part is of great importance, such as the use amount of EVOH is reduced, and the manufacturing cost of the container is reduced. At present, two product forming portions are usually arranged in a die cavity of an extrusion blow molding die, and the opening portions of the products are arranged oppositely. It is still desirable for those skilled in the art to propose a number of different solutions for reducing the weight of flash to meet different production needs.
Disclosure of Invention
The invention provides a method for processing a blow-molded product by using an extrusion blow-molding die, which aims to solve the technical problem of improving the processing efficiency of the extrusion blow-molded product.
The technical problem to be solved by the invention can be solved by the following technical scheme that the extrusion blow molding die comprises a die body with a container die cavity and is characterized in that a convex head is arranged on one end face of the die body, a groove is arranged on the other end face of the die body, the convex head and the groove are arranged along the axial line of the container die cavity, when two sets of extrusion blow molding dies are arranged along the axial line direction of the container die cavity, one end face of one set of extrusion blow molding die can abut against the other end face of the other set of extrusion blow molding die, and the convex head of one set of extrusion blow molding die is embedded into the groove of the other set of extrusion blow molding die.
Compared with the prior art, when the extrusion blow molding die is used, the two sets of extrusion blow molding dies are in butt joint, and the extrusion blow molding die has the advantages that 1, the distance between the two sets of extrusion blow molding dies is eliminated, flash is prevented from being formed between the two sets of extrusion blow molding dies, 2, the grooves are arranged, the distance between the bottom surfaces of the grooves and the end faces of the container die cavities is smaller than the distance between the end faces of the container die cavities and the end faces of the die bodies, the amount of flash generated between the end faces of the container die cavities and the end faces of the die bodies is reduced, and 3, the raised heads are embedded into the grooves, so that parisons in the grooves are fully utilized, the material utilization rate is improved, the amount of flash is reduced, and the butt joint consistency and stability of the two sets of extrusion blow molding dies are improved. The weight ratio of flash in blow molding parts is obviously reduced by using the extrusion blow molding die to produce products, and the flash production is reduced by more than 30 percent.
In the extrusion blow molding die, part of the container die cavity is positioned in the raised head, so that the distance between the end face of the container die cavity and the end face of the raised head is ensured to be at a minimum value, and the increase of the amount of flash generated between the end face of the container die cavity and the end face of the raised head is avoided.
In the extrusion blow molding die, the groove is provided with the first abutting surface which is obliquely arranged, the raised head is provided with the second abutting surface which is obliquely arranged and can be matched with the first abutting surface, so that the raised head can be conveniently embedded into the groove, and the butt joint consistency of the two sets of extrusion blow molding dies is improved.
In the extrusion blow molding die, the die body comprises a left half die and a right half die, the grooves and the raised heads are all split along the parting plane, one half of the grooves and the raised heads are positioned on the left half die, and the other half of the grooves and the raised heads are positioned on the right half die.
In the extrusion blow molding die, an auxiliary pressing strip part is arranged in the die body and positioned between the bottom surface of the groove and the end surface of the container die cavity, an accommodating groove is arranged on the auxiliary pressing strip part and penetrates through the container die cavity and the groove, and a clamping joint accommodating cavity is formed between the raised head and the wall of the groove when one end surface of one set of extrusion blow molding die abuts against the other end surface of the other set of extrusion blow molding die. After the left half die and the right half die are closed, the auxiliary pressing strip part enables the tubular parison to be closed, the extrusion deformation of the parison can be controlled by controlling the depth of the accommodating groove, and the closing tightness is improved. Most of the materials flow into the clamping joint cavity when the parison is extruded by the raised head and the auxiliary pressing strip part, so that the clamping joint is formed by the product, and the sealing property of the product is further improved. In the prior art, the clamping joint is formed in one set of extrusion blow molding die, and the clamping joint accommodating cavity in the prior art is formed by butting two sets of extrusion blow molding dies.
The method for processing the blow-molded product by using the extrusion blow-molding die is characterized in that at least two sets of extrusion blow-molding dies arranged along the axial line direction of a container die cavity are adopted in the method for processing the blow-molded product, and two adjacent sets of extrusion blow-molding dies are respectively called a first die and a second die, and the second die is positioned between the first die and an extrusion device;
The method for processing the blow-molded product comprises the following sequential steps of controlling the left half mould and the right half mould of a first mould to be closed, injecting compressed air into a parison positioned in the first mould, blowing the parison, and maintaining a certain pressure during cooling;
controlling the left half mould and the right half mould of the second mould to be closed;
Third, injecting compressed air into the parison in the second mold, blowing the parison, and maintaining a certain pressure during cooling;
And fourthly, controlling the first die or the second die to move along the axial line direction of the container die cavity so as to separate the first die from the second die, and breaking the parison between the first die and the second die.
The method for processing the blow-molded product by using the extrusion blow-molding die is characterized in that at least two sets of extrusion blow-molding dies arranged along the axial line direction of a container die cavity are adopted in the method for processing the blow-molded product, and two adjacent sets of extrusion blow-molding dies are respectively called a first die and a second die, and the second die is positioned between the first die and an extrusion device;
The method for processing the blow-molded product comprises the following sequential steps of controlling the left half mould and the right half mould of a first mould to be closed, injecting compressed air into a parison positioned in the first mould, blowing the parison, and maintaining a certain pressure during cooling;
Controlling the left half mould and the right half mould of the second mould to be closed, and then controlling the first mould or the second mould to move along the axial line direction of the container mould cavity so that the first mould and the second mould are in a dependent state;
Third, injecting compressed air into the parison in the second mold, blowing the parison, and maintaining a certain pressure during cooling;
And fourthly, controlling the first die or the second die to move along the axial line direction of the container die cavity so as to separate the first die from the second die, and breaking the parison between the first die and the second die.
Compared with the prior art, after the first die and the second die are separated, the blown part in the first die and the blown part in the second die are thoroughly separated, and the position of the disconnection line is identical with the top surface of the convex head of the first die, so that flash cannot be left in the groove of the second die, namely, the bottom of the container is not required to be subjected to flash trimming, and the processing efficiency of extrusion blow molding products is improved.
In the second scheme, a small gap is reserved between the second die and the first die, the gap is 0.5-2 mm, the second die is closed again, and the second die is in dependence with the first die, so that a parison between the second die and the first die is extruded into the clamping joint cavity, the total amount of materials of the clamping joint cavity is increased, and the tightness of the bottom of the container is further improved.
Drawings
Fig. 1 and 2 are schematic perspective views of different viewing angles of an extrusion blow mold.
Fig. 3 is a schematic view of the three-dimensional structure of the mold halves of an extrusion blow mold.
Fig. 4 is a schematic view of the front view of an extrusion blow mold.
Fig. 5 is a schematic cross-sectional view of A-A of fig. 4.
Fig. 6 is a schematic perspective view of a stack of two extrusion blow molds.
FIG. 7 is a schematic cross-sectional view of the stack of two extrusion blow molds.
Fig. 8 is a schematic cross-sectional view of B-B of fig. 7.
Fig. 9 is an enlarged view of the structure at C in fig. 8.
FIG. 10 is a schematic cross-sectional structural view of a second stage in the process of processing a blow molded product.
Fig. 11 is a schematic cross-sectional view of a third step in the process of processing a blow molded product with only the mold in a closed state.
Fig. 12 is a schematic cross-sectional structural view of a third step parison in a blown state in a process for processing a blow molded product.
FIG. 13 is a schematic cross-sectional view of a fourth stage in the process of processing a blow molded product.
FIG. 14 is a schematic cross-sectional view of a blow molded part.
FIG. 15 is a schematic view of the structure of a blow molded part cut into finished parts and flash.
In the figure, 1, a left half mold, 2, a right half mold, 3, a container forming part, 4, a communicating neck, 5, a blowing needle avoiding hole, 6, a raised head, 6a, a first inclined surface, 6b, a second abutting surface, 7, a groove, 7a, a first abutting surface, 8, an auxiliary pressing strip part, 8a, a containing groove, 9, a clamping joint containing cavity, 10, a parison, 11, a first mold, 12, a second mold, 13, an extruding device, 14, a part, 14a, a plastic bottle, 14a1, a bottle body, 14a2, a clamping joint, 14b and a communicating neck.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Embodiment one as shown in fig. 1 to 5, an extrusion blow mold comprises a mold body having a container cavity and a blow-needle escape hole 5, the container cavity comprising a communication neck portion 4 communicating with a container molding portion 3 and a blow-needle escape hole 5, and the container molding portion 3. One end face of the die body is provided with a raised head 6, the other end face of the die body is provided with a groove 7, the two end faces are arranged oppositely, and the raised head 6 and the groove 7 are arranged along the axial lead of the container die cavity.
The mold body comprises a left mold half 1 and a right mold half 2, wherein the left mold half 1 and the right mold half 2 are respectively provided with a container half cavity and a blowing needle avoiding half hole, when the left mold half 1 and the right mold half 2 are closed, the container half cavity on the left mold half 1 and the container half cavity on the right mold half 2 form a container cavity, and the blowing needle avoiding half holes on the left mold half 1 and the blowing needle avoiding half holes on the right mold half 2 form blowing needle avoiding half holes. The grooves 7 and the raised heads 6 are all split along the parting plane, one half of the grooves 7 and the raised heads 6 are positioned on the left half mold half 1, and the other half of the grooves 7 and the raised heads 6 are positioned on the right half mold half 2.
The communicating neck 4 in the container die cavity extends into the raised head 6, and the inner side surface of the raised head 6 is obliquely arranged. The outer end face of the raised head 6 on the left half die 1 is transited with the parting surface by adopting a first inclined plane 6a, and the outer end face of the raised head 6 on the right half die 2 is transited with the parting surface by adopting the first inclined plane 6a, so that the distance between the outer side face and the inner side face in the raised head 6 is minimum at the parting surface, the minimum distance is 4mm-7mm, and the parison 10 is more easily torn at the raised head 6.
An auxiliary pressing strip part 8 is arranged between the bottom surface of the groove 7 and the end surface of the container cavity in the die body, a containing groove 8a is formed in the parting surface of the auxiliary pressing strip part 8, the containing groove 8a penetrates through the container cavity and the groove 7, and the containing groove 8a is arranged to enable the parison 10 not to be broken easily at the auxiliary pressing strip part 8. The extrusion deformation of the parison 10 in the closed state of the left half mould 1 and the right half mould 2 can be controlled by controlling the depth of the accommodating groove 8a, and the sealing performance of the bottom of the container is improved by controlling the thickness of the auxiliary pressing strip part 8, wherein the thickness of the auxiliary pressing strip part 8 is 4mm-7mm.
The recess 7 has two obliquely arranged first abutment surfaces 7a, one first abutment surface 7a being located on the left half-mold 1 and the other first abutment surface 7a being located on the right half-mold 2, the two first abutment surfaces 7a being arranged opposite each other. The raised head 6 is provided with second abutting surfaces 6b which are obliquely arranged and can be matched with the first abutting surfaces 7a, the number of the second abutting surfaces 6b is two, the two second abutting surfaces 6b are arranged in a back-to-back mode, one second abutting surface 6b is positioned on the left half die 1, and the other second abutting surface 6b is positioned on the right half die 2.
As shown in fig. 6 to 9, when two sets of extrusion blow molding dies are arranged along the axial line direction of the container die cavity, one end face of one set of extrusion blow molding die is abutted against the other end face of the other set of extrusion blow molding die, the raised head 6 of one set of extrusion blow molding die is embedded into the groove 7 of the other set of extrusion blow molding die, and a clamping joint containing cavity 9 is formed between the raised head 6 and the wall of the groove 7.
As shown in fig. 10 to 13, the function and advantages of the various structures are further illustrated by way of illustration of a method of processing a blow molded product, which is a plastic bottle 14a, using an extrusion blow mold.
The method for processing the blow-molded product adopts at least two sets of extrusion blow-molding dies, the extrusion blow-molding dies are vertically arranged, namely the parting plane is vertically arranged, the raised head 6 is positioned above, and the groove 7 is positioned below. The extrusion blow molding die is arranged on the die carrier, the extrusion blow molding die can move up and down, and the left half die 1 and the right half die 2 of the extrusion blow molding die can be switched between an open state and a closed state. All extrusion blow-molding dies are arranged along the axial line direction of the container die cavity, namely all extrusion blow-molding dies are arranged in series up and down, and all extrusion blow-molding dies are sequentially called a first die 11 and a second die 12.
The extrusion head of the extrusion device 13 is located above the extrusion blow mold. The hollow plastic parison 10 is extruded by the extrusion device 13, the parison 10 naturally sags and the parison 10 is disposed along the axis of the container cavity. The raised heads 6 and the grooves 7 are all in strip shapes, and the lengths of the raised heads 6 and the grooves 7 are controlled to be matched with the diameters of the parisons 10, so that the tightness of the bottoms of the plastic bottles is ensured.
The process for the production of blow-molded products comprises the following sequential steps, first, as shown in fig. 10, of controlling the closing of the left and right half-molds 1, 2 of a first mold 11, injecting compressed air into a parison 10 placed inside the first mold 11, inflating the parison 10, maintaining a certain pressure during cooling, and controlling the second mold 12 in an open condition, the second mold 12 being in a condition of abutment with the first mold 11, a portion of the parison 10 being located between the left and right half-molds 1, 2 of the second mold 12.
When the left half mould 1 and the right half mould 2 of the first mould 11 are switched from the open state to the closed state, the raised head 6 extrudes and deforms the parison 10, the extruded and deformed flowing material is positioned in the space between the two first inclined planes 6a, namely the space between the two first inclined planes 6a is used for limiting the flowing range of the material during extrusion and deformation, and adverse effects of disordered flowing products of the material, such as that the material flows onto the superposition of two sets of extrusion blow moulding moulds, are avoided, so that the superposition fit of the upper and lower sets of extrusion blow moulding moulds is reduced.
In a second step, as shown in fig. 11, the left and right mold halves 1 and 2 of the second mold 12 are controlled to close. The nose 6 presses the parison 10 into shape when the left and right halves 1, 2 of the second mold 12 are switched from the open state to the closed state, the material flowing in the press deformation being located in the space between the two first inclined surfaces 6 a. Meanwhile, the auxiliary pressing strip part 8 extrudes and deforms the parison 10, part of materials flow into the clamping joint containing cavity 9, and the clamping joint containing cavity 9 is guaranteed to be filled with the materials by controlling the size of the clamping joint containing cavity 9.
Third, as shown in fig. 12, compressed air is injected into the parison 10 positioned in the second mold 12, and the parison 10 is inflated, maintaining a certain pressure during cooling.
Fourth, as shown in fig. 13, the first mold 11 or the second mold 12 is controlled to move in the axial direction of the container cavity so that the first mold 11 is separated from the second mold 12, the parison 10 is broken between the first mold 11 and the second mold 12, specifically, at the bottom edge of the grip seam 14a2, and the grip seam 14a2 formed in the grip seam cavity 9 is a part of the blow-molded part 14 of the second mold 12.
Fifth, the first mold 11 is opened, and the blown part 14 is removed. As shown in fig. 14, the part 14 includes a bottle body 14a1 formed in the container forming portion 3, a communication neck 14b formed in the communication neck 4, and a clamping seam 14a2 formed in the clamping seam receiving cavity 9, the communication neck 14b is connected to the mouth portion of the bottle body 14a1, the clamping seam 14a2 is integrally connected to the bottom portion of the bottle body 14a1, and the clamping seam 14a2 can improve the sealing property and strength of the bottom portion of the plastic bottle 14 a.
Sixth, as shown in fig. 15, the connecting neck 14b of the part 14 is cut off to obtain a finished plastic bottle 14 a. Compared with the prior art, the bottom of the plastic bottle 14a does not need flash cutting processing, and the weight of the parts cut off above the bottle mouth of the plastic bottle 14a is reduced.
The second embodiment is basically the same as the first embodiment in terms of structure and principle, and basically the same points are not described in detail, but only in terms of different points, except that in the first step, the second mold 12 and the first mold 11 are not in a dependent state, but only a small gap is left between the second mold 12 and the first mold 11, and the gap is 0.5mm-2mm. In the second step, the left half mould 1 and the right half mould 2 of the second mould 12 are controlled to be closed, and then the first mould 11 or the second mould 12 is controlled to move along the axial line direction of the container mould cavity, so that the first mould 11 and the second mould 12 are in a dependent state.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010365098.6A CN111421790B (en) | 2020-04-30 | 2020-04-30 | Method for processing blow molding products using extrusion blow molding molds |
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| CN202010365098.6A CN111421790B (en) | 2020-04-30 | 2020-04-30 | Method for processing blow molding products using extrusion blow molding molds |
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| CN111421790A CN111421790A (en) | 2020-07-17 |
| CN111421790B true CN111421790B (en) | 2024-12-20 |
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| CN113085144B (en) * | 2021-04-13 | 2024-03-08 | 沧州市永高农牧机械科技有限公司 | Blowing mould for quantitative cup |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441577A (en) * | 2013-09-13 | 2015-03-25 | 楚天科技股份有限公司 | Production equipment and method of plastic container |
| CN212242078U (en) * | 2020-04-30 | 2020-12-29 | 台州市祥珑食品容器科技股份有限公司 | Extrusion blow molding die |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2134192B1 (en) * | 1971-04-26 | 1974-02-15 | Saint Gobain Pont A Mousson | |
| DE102011079077A1 (en) * | 2011-07-13 | 2013-01-17 | Krones Aktiengesellschaft | Blowing machine for plastic containers |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441577A (en) * | 2013-09-13 | 2015-03-25 | 楚天科技股份有限公司 | Production equipment and method of plastic container |
| CN212242078U (en) * | 2020-04-30 | 2020-12-29 | 台州市祥珑食品容器科技股份有限公司 | Extrusion blow molding die |
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