CN112571766A - Polypropylene plastic products production facility - Google Patents

Polypropylene plastic products production facility Download PDF

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Publication number
CN112571766A
CN112571766A CN202011353291.4A CN202011353291A CN112571766A CN 112571766 A CN112571766 A CN 112571766A CN 202011353291 A CN202011353291 A CN 202011353291A CN 112571766 A CN112571766 A CN 112571766A
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CN
China
Prior art keywords
pipe
nozzle
spraying
lower extreme
compressed air
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011353291.4A
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Chinese (zh)
Inventor
陶伟
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202011353291.4A priority Critical patent/CN112571766A/en
Publication of CN112571766A publication Critical patent/CN112571766A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C49/06—Injection 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
    • B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
    • 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
    • B29C49/58—Blowing means
    • 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
    • B29C2049/023—Combined blow-moulding and manufacture of the preform or the parison using inherent heat of the preform, i.e. 1 step blow moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention discloses a polypropylene plastic product production device, which structurally comprises an injection mold, a guide plate and a support table, wherein the guide plate is fixedly arranged on the outer side of the injection mold, the lower end of the injection mold is arranged at the upper end of the support table, the inner part of the upper end of a tubular plastic parison is sprayed through an inclined nozzle on the outer side of an upper spray pipe, compressed air is rapidly guided to flow on a guide block to prevent overlarge extrusion force on the upper end of a bottle body, an air flow nozzle sprays a sliding ball to drive a rotary spraying mechanism to rotate, the inner part of the lower end of the tubular plastic parison is sprayed in a rotating manner to improve the integrity of plastic bottle molding, the compressed air enters an expansion hose, the compressed air is sprayed out from the inner part of the nozzle to spray the lower end of the bottle body in a rotating manner, the compressed air enters a pressure division plate from the hose and is sprayed out from, the outer side of the bottle bottom and the base are uniformly stressed and extruded, and incomplete bottle bottom forming is avoided.

Description

Polypropylene plastic products production facility
Technical Field
The invention relates to the field of polypropylene equipment, in particular to polypropylene plastic product production equipment.
Background
The polypropylene is a polymer formed by propylene polyaddition reaction, the plastic bottle is mainly prepared from materials such as polypropylene and various organic solvents, after high-temperature heating, a tubular plastic parison obtained by injection molding in product production equipment is placed in a split mold while the parison is hot, compressed air is introduced into the parison immediately after the mold is closed, the plastic parison is blown up and clings to the inner wall of the mold, and the plastic bottle is formed by cooling and demolding.
Disclosure of Invention
The technical scheme adopted by the invention for realizing the technical purpose is as follows: this polypropylene plastic products production facility, its structure includes injection mold, deflector, brace table, injection mold outside fixed mounting has the deflector to the injection mold lower extreme is installed in the brace table upper end, the deflector is located the brace table outside, injection mold includes die holder, shaping chamber, base, injection apparatus, the inside lower extreme of die holder is equipped with the base to base lower extreme fixed mounting has a brace table upper end surface, the shaping chamber has been inlayed to die holder inside, the injection apparatus upper end is installed at die holder upper end surface to injection apparatus is located the shaping intracavity portion, shaping chamber, base and injection apparatus all are equipped with two.
As a further improvement of the invention, the spraying device comprises an upper spraying pipe, inclined nozzles, guide blocks and a lower spraying device, wherein the inclined nozzles are fixedly installed on the outer side of the upper spraying pipe in an embedded mode and communicated with each other, the guide blocks are welded in the upper spraying pipe, the lower end of the upper spraying pipe is provided with the lower spraying device, the guide blocks are of a hemispherical structure, twelve guide blocks are arranged in the upper spraying pipe, and the twelve guide blocks are respectively arranged at the upper ends of the connecting positions of the twelve inclined nozzles and the upper spraying pipe.
As a further improvement of the invention, the lower spraying device comprises a fixing ring, a supporting block, a positioning rotating ball, a cyclone mechanism and a rotary spraying mechanism, wherein the upper end of the fixing ring is fixedly arranged at the lower end of the upper spraying pipe, the outer side of the supporting block is fixedly welded in the upper end of the fixing ring, the upper end of the positioning rotating ball is arranged in the lower end of the supporting block in a clearance fit manner, the lower end of the positioning rotating ball is fixed with the upper end of the cyclone mechanism, the lower end of the cyclone mechanism is fixed with the upper end of the rotary spraying mechanism, and the positioning rotating ball and the supporting block are.
As a further improvement of the invention, the cyclone mechanism comprises an outer ring, airflow nozzles, a sliding ball, guide rings, through pipes and partition plates, the airflow nozzles are fixedly embedded in the upper end of the outer ring, the sliding ball is slidably mounted in the outer ring, the guide rings penetrate through the sliding ball in a clearance fit manner, the inner ends of the sliding balls are fixed with the outer sides of the through pipes, the guide rings are positioned in the outer ring, the partition plates are welded on the inner walls of the through pipes, the upper ends of the partition plates are welded with the lower ends of the positioning rotating balls, the lower ends of the through pipes are fixed with the upper end of the rotary injection mechanism, the airflow nozzles are eight in number and are installed in an inclined angle, the partition plates are in a cross structure, and the central points of the partition plates and the axes of the positioning rotating balls are positioned.
As a further improvement of the present invention, the rotary spraying mechanism includes a conduit, a flexible hose, a nozzle, and a collision mechanism, the upper end of the conduit is fixed to the lower end of the through pipe, the flexible hose is fixedly embedded in and communicated with the outer side of the conduit, the nozzle is disposed at the outer side end of the flexible hose, the collision mechanism is disposed at the lower end of the conduit, and the flexible hose is of a corrugated structure, made of rubber, and has a certain resilience.
As a further improvement of the invention, the abutting mechanism comprises a connecting pipe, a spring rod, a hose, two pressure dividing plates and vent holes, wherein the upper end of the connecting pipe is fixedly embedded at the lower end of the guide pipe and communicated with the lower end of the guide pipe, the upper end of the spring rod is arranged inside the lower end of the connecting pipe, the hose is connected between the connecting pipe and the pressure dividing plate, the lower end of the spring rod is fixed with the pressure dividing plate, the vent holes are embedded inside the lower end of the pressure dividing plate, the pressure dividing plates are of arc structures and matched with the radian of the upper end of the base, the number of the hoses is two, the bottom of each pressure dividing plate.
The invention has the beneficial effects that:
1. inside discharging compressed air into last spray tube, the slope nozzle through last spray tube outside sprays tubular plastic parison upper end is inside, compressed air carries out quick direction flow on the guide block, prevent that the extrusion force that the body upper end received is too big, inside compressed air enters into the air current mouth after that, the air current mouth sprays the sliding ball, it is rotatory to have driven rotatory injection mechanism, carry out rotatory injection to tubular plastic parison's lower extreme inside, improve the fashioned integrality of plastic bottle.
2. After compressed air entered into the pipe is inside, pipe self rotated, compressed air entered into inside the flexible hose simultaneously, last compressed air spout from the nozzle is inside, carry out rotatory injection to the body lower extreme, the improvement carries out even extrusion to body lower extreme inside, the spring beam through the lower extreme can make score clamp plate highly adjust, compressed air enters into the pressure divider inboard from the hose simultaneously, extrude the bottle end from the air vent blowout at last, make the bottle end outside and base carry out even atress extrusion, avoid the bottle end shaping incomplete.
Drawings
FIG. 1 is a schematic structural diagram of a polypropylene plastic product production apparatus of the present invention.
FIG. 2 is a schematic diagram of an internal structure of an injection mold according to the present invention.
FIG. 3 is a schematic diagram of the internal structure of an injection apparatus according to the present invention.
FIG. 4 is an enlarged view of the interior and a portion of a lower spraying device according to the present invention.
Figure 5 is a schematic top view of the cyclone mechanism of the present invention.
Fig. 6 is a schematic structural diagram of a rotary spraying mechanism according to the present invention.
Fig. 7 is a schematic view of an internal structure of a collision mechanism according to the present invention.
In the figure: an injection mold-1, a guide plate-2, a support table-3, a mold base-11, a molding cavity-12, a base-13, a spraying device-14, an upper spray pipe-141, an inclined spray nozzle-142, a guide block-143, a lower spraying device-144, a fixed ring-44 a, a supporting block-44 b, a positioning rotating ball-44 c, a cyclone mechanism-44 d and a rotary spraying mechanism-44 e, the device comprises an outer ring-d 1, an air flow nozzle-d 2, a sliding ball-d 3, a guide ring-d 4, a through pipe-d 5, a partition plate-d 6, a conduit-e 1, a telescopic hose-e 2, a nozzle-e 3, a collision mechanism-e 4, a connecting pipe-e 41, a spring rod-e 42, a hose-e 43, a pressure dividing plate-e 44 and a vent hole-e 45.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example 1:
as shown in figures 1 to 5:
the invention relates to polypropylene plastic product production equipment which structurally comprises an injection mold 1, a guide plate 2 and a support table 3, wherein the guide plate 2 is fixedly installed on the outer side of the injection mold 1, the lower end of the injection mold 1 is installed at the upper end of the support table 3, the guide plate 2 is located on the outer side of the support table 3, the injection mold 1 comprises a mold base 11, a forming cavity 12, a base 13 and an injection device 14, the base 13 is arranged at the lower end inside the mold base 11, the lower end of the base 13 is fixedly installed on the upper end surface of the support table 3, the forming cavity 12 is embedded inside the mold base 11, the upper end of the injection device 14 is installed on the upper end surface of the mold base 11, the injection device 14 is located inside the forming cavity 12, and the forming cavity 12, the base 13 and the injection device 14 are respectively provided with.
The spraying device 14 comprises an upper spraying pipe 141, an inclined nozzle 142, a guide block 143 and a lower spraying device 144, the inclined nozzle 142 is fixedly installed on the outer side of the upper spraying pipe 141 and communicated with the outer side of the upper spraying pipe 141, the guide block 143 is welded inside the upper spraying pipe 141, the lower spraying device 144 is arranged at the lower end of the upper spraying pipe 141, the guide blocks 143 are of a hemispheroid structure and twelve in number and are respectively arranged at the upper ends of the internal connection positions of the twelve inclined nozzles 142 and the upper spraying pipe 141, so that the compressed air can flow on the inclined nozzle 142 to enter the lower spraying device 144 at the lower end, the compressed air of the inclined nozzle 142 at the upper end is prevented from being too large, and the extrusion force on the upper end of the bottle.
The lower spraying device 144 includes a fixing ring 44a, a supporting block 44b, a positioning rotating ball 44c, a cyclone mechanism 44d, and a rotary spraying mechanism 44e, the upper end of the fixing ring 44a is fixedly mounted at the lower end of the upper spraying pipe 141, the outer side of the supporting block 44b is fixedly welded inside the upper end of the fixing ring 44a, the upper end of the positioning rotating ball 44c is mounted inside the lower end of the supporting block 44b in a clearance fit manner, the lower end of the positioning rotating ball 44c is fixed with the upper end of the cyclone mechanism 44d, the lower end of the cyclone mechanism 44d is fixed with the upper end of the rotary spraying mechanism 44e, and the positioning rotating ball 44c and the supporting block 44b are located on the same vertical central axis, so that the positioning rotating ball 44c can drive the cyclone mechanism.
Wherein, the cyclone mechanism 44d comprises an outer ring d1, an air flow nozzle d2, a sliding ball d3, a guide ring d4, a through pipe d5 and a partition plate d6, the air flow nozzle d2 is fixedly embedded in the upper end of the outer ring d1, a sliding ball d3 is slidably installed in the outer ring d1, the guide ring d4 penetrates through the sliding ball d3 by clearance fit, the inner end of the sliding ball d3 is fixed with the outer side of the through pipe d5, the guide ring d4 is positioned in the outer ring d1, the partition plate d6 is welded on the inner wall of the through pipe d5, the upper end of the partition plate 63d 28 is welded with the lower end of the positioning rotating ball 44c, the lower end of the through pipe d 9 is fixed with the upper end of the rotary injection mechanism 44e, the air flow nozzles d2 are eight in total and are installed at an inclined angle, the ability of injecting the sliding ball d3 is improved, thereby ensuring that the sliding ball d 68653 can smoothly rotate around the guide ring 4 in the process of compressing air, therefore, the through pipe d5 rotates, the partition plate d6 is in a cross structure, and the center point of the partition plate d6 and the axis of the positioning rotating ball 44c are located on the same vertical central axis, so that the through pipe d5 can rotate stably, and the compressed air is prevented from shaking.
The specific use mode and function of the embodiment are as follows:
in the invention, after the polypropylene raw material is subjected to high-temperature work, the polypropylene raw material is injected and enters from the upper end of the forming cavity 12 in the die holder 11 and is positioned at the outer side of the injection device 14, the raw material forms a tubular plastic parison in the forming cavity 12, then the redundant polypropylene raw material is removed, then the polypropylene raw material is connected with the upper end of the injection device 14 through an external air cylinder, compressed air is discharged into the upper spray pipe 141, the inner part of the upper end of the tubular plastic parison is injected through the inclined nozzle 142 at the outer side of the upper spray pipe 141, so that the upper end of the tubular plastic parison is attached to the inner wall of the upper end of the forming cavity 12 to form the upper body of the plastic bottle, the compressed air is rapidly guided and flows on the guide block 143 and enters the lower injection device 144, the phenomenon that the compressed air of the inclined nozzle 142 at the upper end is too large and the extrusion force, the air flow nozzle d2 sprays the sliding ball d3, so that the sliding ball d3 slides on the guide ring d4 in a guiding manner, the rotary spraying mechanism 44e is driven to rotate, the inner part of the lower end of the tubular plastic parison is sprayed in a rotating manner, the tubular plastic parison is attached to the inner wall of the lower end of the forming cavity 12, the lower body of the plastic bottle is formed, and the forming integrity of the plastic bottle is improved.
Example 2:
as shown in fig. 6 to 7:
wherein, rotatory injection mechanism 44e includes pipe e1, expansion hose e2, nozzle e3, conflict mechanism e4, pipe e1 upper end is fixed mutually with siphunculus d5 lower extreme, expansion hose e2 inlays the solid mounting inside and link up mutually in the pipe e1 outside, expansion hose e2 outside end is equipped with nozzle e3 to pipe e1 lower extreme is equipped with conflict mechanism e4, expansion hose e2 is fold type structure to adopt rubber material, have certain resilience, can stretch out and draw back according to compressed air's dynamics, thereby drive nozzle e3 lateral displacement, the improvement carries out even extrusion to body lower extreme inside.
The collision mechanism e4 comprises a connecting pipe e41, a spring rod e42, a hose e43, a pressure dividing plate e44 and vent holes e45, the upper end of the connecting pipe e41 is fixedly installed at the lower end of the conduit e1 and communicated with the conduit e1, the upper end of the spring rod e42 is installed inside the lower end of the connecting pipe e41, the hose e43 is connected between the connecting pipe e41 and the pressure dividing plate e44, the lower end of the spring rod e42 is fixed with the pressure dividing plate e44, vent holes e45 are embedded inside the lower end of the pressure dividing plate e44, the pressure dividing plate e44 is of an arc structure and matched with the radian of the upper end of the base 13, collision of the bottle bottom is facilitated, deformation of the bottle bottom after compressed air is received is prevented, the number of the two hose e43 is totally arranged, three vent holes e45 are arranged at the bottom of the pressure dividing plate e44, and the vent holes e45 are of a structure with a.
The specific use mode and function of the embodiment are as follows:
in the invention, when compressed air enters the conduit e1, the conduit e1 rotates, the compressed air enters the telescopic hose e2 and can be telescopic according to the force of the compressed air to drive the nozzle e3 to transversely displace, finally, the compressed air is sprayed out from the nozzle e3 to rotatably spray the lower end of the bottle body, so that the inner part of the lower end of the bottle body is uniformly extruded, meanwhile, the height of the score pressing plate e44 can be adjusted through the spring rod e42 at the lower end, the score pressing plate e44 is ensured to abut against the bottle bottom at the lower end, meanwhile, the compressed air enters the pressure dividing plate e44 from the hose e43, and finally, the compressed air is sprayed out from the vent hole e45 to extrude the bottle bottom, so that the outer side of the bottle bottom is uniformly stressed and extruded with the base 13, and the incomplete bottle bottom molding is avoided.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.

Claims (6)

1. The utility model provides a polypropylene plastic products production facility, its structure includes injection mold (1), deflector (2), brace table (3), injection mold (1) outside fixed mounting has deflector (2) to injection mold (1) lower extreme is installed in brace table (3) upper end, deflector (2) are located brace table (3) outside, its characterized in that:
injection mold (1) is including die holder (11), shaping chamber (12), base (13), injection apparatus (14), the inside lower extreme of die holder (11) is equipped with base (13) to base (13) lower extreme fixed mounting has an upper end surface at brace table (3), shaping chamber (12) have been inlayed to die holder (11) inside, injection apparatus (14) upper end is installed at die holder (11) upper end surface, and injection apparatus (14) are located shaping chamber (12) inside.
2. The apparatus for producing polypropylene plastic products as claimed in claim 1, wherein: the spraying device (14) comprises an upper spraying pipe (141), an inclined nozzle (142), a guide block (143) and a lower spraying device (144), wherein the inclined nozzle (142) is fixedly installed on the outer side of the upper spraying pipe (141) and communicated with the upper spraying pipe, the guide block (143) is welded in the upper spraying pipe (141), and the lower end of the upper spraying pipe (141) is provided with the lower spraying device (144).
3. The apparatus for producing polypropylene plastic products as claimed in claim 2, wherein: the lower spraying device (144) comprises a fixing ring (44a), a supporting block (44b), a positioning rotating ball (44c), a cyclone mechanism (44d) and a rotary spraying mechanism (44e), wherein the upper end of the fixing ring (44a) is fixedly installed at the lower end of the upper spraying pipe (141), the outer side of the supporting block (44b) is fixedly welded inside the upper end of the fixing ring (44a), the upper end of the positioning rotating ball (44c) is installed inside the lower end of the supporting block (44b) in a clearance fit mode, the lower end of the positioning rotating ball (44c) is fixed with the upper end of the cyclone mechanism (44d), and the lower end of the cyclone mechanism (44d) is fixed with the upper end of the rotary spraying mechanism (44 e.
4. The apparatus for producing polypropylene plastic products as claimed in claim 3, wherein: the cyclone mechanism (44d) comprises an outer ring (d1), an air flow nozzle (d2), a sliding ball (d3), a guide ring (d4), a through pipe (d5) and a partition plate (d6), wherein the air flow nozzle (d2) is fixedly installed inside the upper end of the outer ring (d1), the sliding ball (d3) is installed inside the outer ring (d1) in a sliding mode, the guide ring (d4) penetrates through the inside of the sliding ball (d3) in a clearance fit mode, the inner side end of the sliding ball (d3) is fixed to the outer side of the through pipe (d5), the guide ring (d4) is located inside the outer ring (d1), the partition plate (d6) is welded to the inner wall of the through pipe (d5), the upper end of the partition plate (d6) is welded to the lower end of the positioning rotating ball (44c), and the lower end of the through pipe (d5) is fixed to the upper end of the.
5. The apparatus for producing polypropylene plastic products as claimed in claim 4, wherein: rotatory injection mechanism (44e) include pipe (e1), flexible hose (e2), nozzle (e3), conflict mechanism (e4), pipe (e1) upper end is fixed mutually with siphunculus (d5) lower extreme, flexible hose (e2) are embedded and are installed inside and link up mutually in pipe (e1) outside, flexible hose (e2) outside end is equipped with nozzle (e3) to pipe (e1) lower extreme is equipped with conflict mechanism (e 4).
6. The apparatus for producing polypropylene plastic products as claimed in claim 5, wherein: conflict mechanism (e4) include connecting pipe (e41), spring beam (e42), hose (e43), partial pressure board (e44), air vent (e45), connecting pipe (e41) upper end is embedded to be installed at pipe (e1) lower extreme and is link up mutually, inside connecting pipe (e41) lower extreme is installed to spring beam (e42) upper end, hose (e43) are connected between connecting pipe (e41) and partial pressure board (e44), spring beam (e42) lower extreme is fixed mutually with partial pressure board (e44), air vent (e45) have been inlayed to partial pressure board (e44) lower extreme inside.
CN202011353291.4A 2020-11-27 2020-11-27 Polypropylene plastic products production facility Withdrawn CN112571766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011353291.4A CN112571766A (en) 2020-11-27 2020-11-27 Polypropylene plastic products production facility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011353291.4A CN112571766A (en) 2020-11-27 2020-11-27 Polypropylene plastic products production facility

Publications (1)

Publication Number Publication Date
CN112571766A true CN112571766A (en) 2021-03-30

Family

ID=75123793

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011353291.4A Withdrawn CN112571766A (en) 2020-11-27 2020-11-27 Polypropylene plastic products production facility

Country Status (1)

Country Link
CN (1) CN112571766A (en)

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Application publication date: 20210330

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