CN111168962A - Production process of polyethylene plate - Google Patents
Production process of polyethylene plate Download PDFInfo
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- CN111168962A CN111168962A CN201911414116.9A CN201911414116A CN111168962A CN 111168962 A CN111168962 A CN 111168962A CN 201911414116 A CN201911414116 A CN 201911414116A CN 111168962 A CN111168962 A CN 111168962A
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- polyethylene
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/025—General arrangement or layout of plant
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/275—Recovery or reuse of energy or materials
- B29C48/277—Recovery or reuse of energy or materials of materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention relates to the technical field of polyethylene plate production, in particular to a production process of a polyethylene plate, which comprises the following steps: step 1: screening; step 2: stirring; and step 3: carrying out spiral conveying; and 4, step 4: melting and extruding; and 5: forming a mouth die; step 6: three-roller press polish; and 7: cooling and conveying; and 8: shearing; and step 9: and (4) crushing the waste. The polyethylene plate sorting machine has the effects of screening polyethylene particles and color mold particles, sorting large-particle polyethylene and color molds, ensuring the size of particles entering an extruder, reducing the probability of particles in a molten and extruded polyethylene plate, and ensuring the quality of the polyethylene plate and reducing the defective rate.
Description
Technical Field
The invention relates to the technical field of polyethylene plate production, in particular to a production process of a polyethylene plate.
Background
Polyethylene sheets, also known as low pressure high density polyethylene, HDPE sheets, PE sheets, HDPE rods. Is a non-polar thermoplastic resin with high crystallinity. The appearance of the original HDPE is milky white, and the micro-thin section is semitransparent to a certain degree.
The prior Chinese patent with publication number CN1788980 discloses a polyethylene plate production line and a production process utilizing the polyethylene plate production line, which comprises the steps of raw material preparation, charging, plasticizing and extruding, neck mold forming, three-roller press polishing, cooling and conveying, and cutting to length to form a finished plate, and is characterized in that: 1) according to the width of the polyethylene plate to be produced, the width of an outlet of a width-changing bush hanger type machine head is adjusted by a width adjuster, 2) the position of a shearing piece of a limiting stopper is adjusted according to the width specification of a finished plate, 3) the roll gap of a three-roll calender is adjusted, so that the roll gap between an upper roll and a middle roll is equal to the thickness of the plastic plate to be produced, namely, the plastic plate does not bear pressure when passing through the roll gap, 4) when plasticizing and extruding operations are started, a lubricating oil cooling device is started to work, and 5) the plasticizing, extruding and subsequent processes are carried out: forming a neck ring mold, calendering by three rollers, cooling, conveying, and cutting to length to obtain a finished product.
The above prior art solutions have the following drawbacks: polyethylene particles and color mold particles are directly conveyed into an extruder to be melted and extruded in the production process, the polyethylene particles and the color mold particles have sizes, larger particles cannot be completely melted in the extruder, extruded polyethylene plates contain particles, and salient points can also appear on the surfaces of the polyethylene plates, so that the polyethylene plates are degraded into defective products.
Disclosure of Invention
The invention aims to provide a production process of a polyethylene plate, which can screen polyethylene particles and color mold particles, so that large-particle polyethylene and color molds can be selected, the particle size entering an extruder is ensured, the probability of particles in the polyethylene plate subjected to melt extrusion is reduced, and the quality of the polyethylene plate is ensured to reduce the defective rate.
The above object of the present invention is achieved by the following means.
A production process of a polyethylene plate comprises the following steps:
step 1: screening, namely screening polyethylene particles and color model particles, screening large particles, and feeding small particles into a stirring barrel;
step 2: stirring, pouring the screened polyethylene particles and the color model particles into a stirring barrel to be uniformly stirred;
and step 3: conveying the mixture of the mixed polyethylene particles and the color mold particles into an extruder through a screw conveyor;
and 4, step 4: melting and extruding, namely melting and extruding a mixture of polyethylene particles and color mold particles by using an extruder;
and 5: molding a neck ring mold, namely extruding the polyethylene and the color mold melt into a plate shape through an outlet neck ring mold;
step 6: three-roller press polishing, namely press polishing the board by a three-roller press polishing machine;
and 7: cooling and conveying, namely conveying and cooling the plates through a conveying belt;
and 8: shearing, namely shearing the plate according to the required size;
and step 9: crushing the waste, namely putting the screened larger particles, the cut leftover materials and the produced defective products into a crusher for crushing.
By adopting the technical scheme, polyethylene particles and color mold particles are screened through screening, so that large-particle polyethylene and color molds are selected, the particle size of an extruder is guaranteed, the probability of particles in a polyethylene plate extruded by melting is reduced, and the quality of the polyethylene plate is guaranteed, so that the defective rate is reduced.
The invention is further configured to: the shearing is carried out by adopting a hydraulic four-column blanking machine.
Through adopting above-mentioned technical scheme, the blanking machine has fine work efficiency, can guarantee the size of the polyethylene board of shearing simultaneously.
The invention is further configured to: and the scrap is crushed, and leftover materials and defective products are cut into small pieces by a shearing machine.
By adopting the technical scheme, because leftover bits and wastrel are great, directly throw into the breaker and can influence, the efficiency of breaker and the crushing quality of breaker, the cutter can be tailor into the fritter with leftover bits and wastrel, carries out the breakage again, has promoted the efficiency of breaker and the crushing quality of breaker.
The invention is further configured to: a feeding port is formed in the side wall of the stirring barrel, a screening device is arranged at the feeding port, and the screening device screens polyethylene particles and color model particles.
Through adopting above-mentioned technical scheme, set up the sieving mechanism on the agitator, need not to adopt other equipment to filter simultaneously also need not to carry the polyethylene granule after the retreening and the colour mould granule, practiced thrift the cost, improved production efficiency simultaneously.
The invention is further configured to: the sieving mechanism is including connecing hopper and screen cloth, connect the hopper to set firmly in agitator pan feeding mouth department and communicate the agitator pan feeding mouth, the screen cloth is installed in connecing the hopper, and the screen cloth will connect the hopper to separate into two sections.
Through adopting above-mentioned technical scheme, connect the hopper to be used for saving polyethylene granule and color model granule, the screen cloth is screened polyethylene granule and color model granule to block great granule in connecing the hopper, make it can't get into the agitator and participate in subsequent production and processing.
The invention is further configured to: the screen cloth slope sets up and the agitator direction slope is kept away from to the orientation, connect hopper bottom slope to set up and incline towards the agitator direction.
Through adopting above-mentioned technical scheme, the screen cloth that the slope set up and the hopper bottom that connects that the slope set up can lead the direction of motion of polyethylene granule and colour mould granule, prevent that polyethylene granule and colour mould granule from piling up in connecing the hopper or piling up on the screen cloth.
The invention is further configured to: connect the hopper to keep away from agitator one side in the screen cloth and set up the bin outlet, it is provided with the baffle to rotate on the bin outlet.
Through adopting above-mentioned technical scheme, the setting up of bin outlet and baffle can be when the polyethylene granule of large granule and look mould granule are too much, with the polyethylene granule of large granule and look mould granule discharge to polyethylene granule and look mould granule of large granule pile up the efficiency that influences the screening in connecing the hopper.
The invention is further configured to: and a rubber pad is fixedly arranged on one side of the baffle plate, which is far away from the rotating side.
Through adopting above-mentioned technical scheme, the setting up of rubber pad can seal the bin outlet and prevent the outer hourglass of polyethylene granule and color mold granule, and the rubber pad has deformability simultaneously, can prevent through deformation that the backstop board card dies in the bin outlet, makes the normal rotation of baffle.
The invention is further configured to: the material receiving frame is arranged at the position of the material discharging opening and fixedly arranged on the material receiving hopper.
Through adopting above-mentioned technical scheme, connect the material frame to be used for collecting the polyethylene granule of large granule and look mould granule to the follow-up concentrated breaker of sending into carries out the breakage.
In conclusion, the beneficial technical effects of the invention are as follows:
polyethylene particles and color mold particles are screened through screening, so that large polyethylene particles and color molds are selected, the size of the particles entering an extruder is ensured, the probability of particles in a polyethylene plate extruded in a melting mode is reduced, and the quality of the polyethylene plate is ensured to reduce the defective rate;
because the leftover materials and the defective products are large, the influence of directly throwing the leftover materials and the defective products into a crusher, the efficiency of the crusher and the crushing quality of the crusher can be realized, and the leftover materials and the defective products can be cut into small pieces by the shearing machine and then crushed, so that the efficiency of the crusher and the crushing quality of the crusher are improved;
the screening device is arranged on the stirring barrel, so that other equipment is not required for screening, screened polyethylene particles and screened color model particles are not required to be conveyed after screening, the cost is saved, and the production efficiency is improved;
due to the arrangement of the discharge opening and the baffle, when large polyethylene particles and color model particles are excessive, the large polyethylene particles and the color model particles can be discharged, so that the large polyethylene particles and the color model particles are prevented from being accumulated in the material receiving hopper to influence the screening efficiency;
the material receiving frame is used for collecting large polyethylene particles and color model particles so as to be conveyed into the crusher to be crushed in a centralized mode in the subsequent process.
Drawings
FIG. 1 is a block flow diagram of the present invention.
Fig. 2 is a schematic view of the overall structure of the mixing tank of the present invention.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
In the figure, 1, a stirring barrel; 2. a feeding port; 3. a screening device; 301. a receiving hopper; 302. screening a screen; 4. a discharge outlet; 5. a baffle plate; 6. a rubber pad; 7. and (4) receiving a material frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the production process of the polyethylene board disclosed by the invention comprises the following steps:
step 1: screening, namely screening polyethylene particles and color model particles, screening large particles, feeding small particles into a stirring barrel 1, screening the polyethylene particles and the color model particles through screening, so that large-particle polyethylene and color model are selected, the particle size entering an extruder is ensured, the probability of the occurrence of particles in a molten and extruded polyethylene plate is reduced, and the quality of the polyethylene plate is ensured to reduce the defective rate;
step 2: stirring, pouring the screened polyethylene particles and color model particles into a stirring barrel 1 for uniformly stirring, wherein the color model is a material for dyeing polyethylene and needs to be uniformly mixed in the polyethylene particles during the production of a polyethylene plate so as to uniformly dye the polyethylene plate during the subsequent production, and the stirring barrel 1 is the conventional material stirring barrel 1;
and step 3: the mixture of the polyethylene particles and the color pattern particles after mixing is sent into an extruder through a screw conveyer, and the bolt conveyer has higher conveying capacity and can smoothly convey the mixture of the polyethylene particles and the color pattern particles;
and 4, step 4: melting and extruding, namely melting and extruding a mixture of polyethylene particles and color pattern particles by using an extruder, wherein the extruder has a melting function, and melting and extruding the material in the extruder so as to be processed and molded subsequently;
and 5: molding a neck ring mold, namely extruding the polyethylene and the color mold melt into a plate shape through an outlet neck ring mold, wherein the outlet neck ring mold is arranged according to the required thickness of the polyethylene and is used for extrusion molding of the polyethylene plate;
step 6: three-roller calendering, namely calendering the plate by a three-roller calender, wherein the calendering can improve the smoothness and the glossiness of the surface of the polyethylene plate;
and 7: cooling and conveying, namely conveying and cooling the plate by using a conveying belt, wherein the conveying belt is a longer conveying belt and can enable the polyethylene plate to be naturally cooled and molded;
and 8: shearing, namely shearing the plate according to the required size, wherein the shearing is carried out by adopting a hydraulic four-column blanking machine, the blanking machine has good working efficiency, and the size of the sheared polyethylene plate can be ensured;
and step 9: and (3) crushing waste materials, namely putting the screened larger particles, the sheared leftover materials and the produced defective products into a crusher for crushing, and screening the crushed particles, the sheared leftover materials and the produced defective products again for producing the polyethylene plates, so that resources are saved. The scrap is broken and cut into small pieces through the shearing machine before leftover materials and defective products are cut into small pieces, the leftover materials and the defective products are large and can be directly thrown into the crushing machine to be influenced, the efficiency of the crushing machine and the crushing quality of the crushing machine can be cut into small pieces through the shearing machine, then the crushing is carried out, and the efficiency of the crushing machine and the crushing quality of the crushing machine are improved.
Referring to fig. 2 and 3, pan feeding mouth 2 has been seted up to agitator 1 lateral wall, and pan feeding mouth 2 department is provided with sieving mechanism 3, and sieving mechanism 3 screens polyethylene granule and color model granule, sets up sieving mechanism 3 on agitator 1, need not to adopt other equipment to screen simultaneously also need not to carry the polyethylene granule after the screening and color model granule after the screening again, has practiced thrift the cost, has improved production efficiency simultaneously.
Referring to fig. 2 and 3, the screening device 3 includes a receiving hopper 301 fixedly disposed at the feeding port 2 of the mixing tank 1 and communicated with the feeding port 2 of the mixing tank 1, and a screen 302 installed in the receiving hopper 301, the receiving hopper 301 is divided into two sections by the screen 302, the receiving hopper 301 is used for storing polyethylene particles and color model particles, and the screen 302 screens the polyethylene particles and the color model particles, so that larger particles are blocked in the receiving hopper 301 and cannot enter the mixing tank 1 to participate in subsequent production and processing; the screen 302 inclines to set up and the orientation keeps away from agitator 1 direction slope, and the slope sets up and inclines towards agitator 1 direction in connecing hopper 301 bottom, and the screen 302 that the slope set up can lead the direction of motion of polyethylene granule and colour model granule with connecing hopper 301 bottom that the slope set up, prevents that polyethylene granule and colour model granule from piling up in connecing hopper 301 or piling up on screen 302.
Referring to fig. 2 and 3, a discharge opening 4 is formed in the side, away from the stirring barrel 1, of the material receiving hopper 301, a baffle plate 5 is rotatably arranged on the discharge opening 4, when large polyethylene particles and color mold particles are too many, the discharge opening 4 and the baffle plate 5 can discharge the large polyethylene particles and the color mold particles, so that the large polyethylene particles and the color mold particles are prevented from being accumulated in the material receiving hopper 301 to influence the screening efficiency, one end of the baffle plate 5 is rotatably arranged on the material receiving hopper 301 through a rotating shaft, an arc chamfer is formed in one side, rotated, of the material receiving hopper 301, and the arc chamfer prevents the baffle plate 5 from being abutted against the material receiving hopper 301 and being incapable of rotating; one side, far away from the rotation, of the baffle 5 is fixedly provided with a rubber pad 6, the rubber pad 6 can seal the discharge hole 4 to prevent polyethylene particles and color mold particles from leaking, and meanwhile, the rubber pad 6 has deformation capacity and can prevent the baffle 5 from being clamped in the discharge hole 4 through deformation so that the baffle 5 can normally rotate; the discharge gate 4 department is provided with connects material frame 7, connects material frame 7 to set firmly on connecing hopper 301, connects material frame 7 to be used for collecting the polyethylene granule of large granule and color pattern granule to the follow-up concentrated breaker of sending into carries out the breakage.
The implementation principle of the embodiment is as follows: pouring polyethylene particles and color model particles into a receiving hopper 301, screening the polyethylene particles and the color model particles on a screen 302, remaining the polyethylene particles and the color model particles with large particles in the receiving hopper 301, enabling the polyethylene particles and the color model particles with small particles to enter a stirring barrel 1 for stirring, taking out the polyethylene particles and the color model particles from the stirring barrel 1 after uniform stirring, feeding the polyethylene particles and the color model particles into an extruder through a screw conveyor, forming the polyethylene particles into a polyethylene plate through a die, feeding the polyethylene plate into a three-roller press polish machine for press polishing, cooling and conveying the polyethylene plate to a hydraulic four-column blanking machine for shearing, and shearing the polyethylene plate into required sizes to complete the production of the press polish plate; when the large polyethylene particles and the color model particles in the receiving hopper 301 are too many, the baffle 5 is opened to enable the large polyethylene particles and the color model particles to enter the receiving frame 7, then the large polyethylene particles and the color model particles in the receiving frame 7, and the cut leftover materials and the defective products are thrown into the crusher to be crushed, and the crushed polyethylene particles and the cut leftover materials and the defective products are screened and reused again.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A production process of a polyethylene plate comprises the following steps:
step 1: screening, namely screening polyethylene particles and color model particles, screening large particles, and conveying small particles into a stirring barrel (1);
step 2: stirring, pouring the screened polyethylene particles and the color model particles into a stirring barrel (1) for uniformly stirring;
and step 3: conveying the mixture of the mixed polyethylene particles and the color mold particles into an extruder through a screw conveyor;
and 4, step 4: melting and extruding, namely melting and extruding a mixture of polyethylene particles and color mold particles by using an extruder;
and 5: molding a neck ring mold, namely extruding the polyethylene and the color mold melt into a plate shape through an outlet neck ring mold;
step 6: three-roller press polishing, namely press polishing the board by a three-roller press polishing machine;
and 7: cooling and conveying, namely conveying and cooling the plates through a conveying belt;
and 8: shearing, namely shearing the plate according to the required size;
and step 9: crushing the waste, namely putting the screened larger particles, the cut leftover materials and the produced defective products into a crusher for crushing.
2. Process for the production of polyethylene sheets according to claim 1, characterized in that: the shearing is carried out by adopting a hydraulic four-column blanking machine.
3. Process for the production of polyethylene sheets according to claim 1, characterized in that: and the scrap is crushed, and leftover materials and defective products are cut into small pieces by a shearing machine.
4. Process for the production of polyethylene sheets according to claim 1, characterized in that: pan feeding mouth (2) have been seted up to agitator (1) lateral wall, pan feeding mouth (2) department is provided with sieving mechanism (3), sieving mechanism (3) are screened polyethylene granule and color model granule.
5. Process for the production of polyethylene sheets according to claim 4, characterized in that: sieving mechanism (3) are including connecing hopper (301) and screen cloth (302), connect hopper (301) to set firmly in agitator (1) pan feeding mouth (2) department and communicate agitator (1) pan feeding mouth (2), screen cloth (302) are installed in connecing hopper (301), and screen cloth (302) will connect hopper (301) to separate into two sections.
6. Process for the production of polyethylene sheets according to claim 5, characterized in that: the screen cloth (302) slope sets up and the orientation keeps away from agitator (1) direction slope, connect hopper (301) bottom slope to set up and incline towards agitator (1) direction slope.
7. Process for the production of polyethylene sheets according to claim 6, characterized in that: connect hopper (301) to keep away from agitator (1) one side in screen cloth (302) and set up bin outlet (4), rotate on bin outlet (4) and be provided with baffle (5).
8. Process for the production of polyethylene sheets according to claim 7, characterized in that: and a rubber pad (6) is fixedly arranged on one side, far away from the rotating side, of the baffle (5).
9. Process for the production of polyethylene sheets according to claim 8, characterized in that: the discharge gate (4) is provided with a material receiving frame (7), and the material receiving frame (7) is fixedly arranged on the material receiving hopper (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414116.9A CN111168962A (en) | 2019-12-31 | 2019-12-31 | Production process of polyethylene plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414116.9A CN111168962A (en) | 2019-12-31 | 2019-12-31 | Production process of polyethylene plate |
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| CN111168962A true CN111168962A (en) | 2020-05-19 |
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| CN201911414116.9A Pending CN111168962A (en) | 2019-12-31 | 2019-12-31 | Production process of polyethylene plate |
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Application publication date: 20200519 |