CN111849072A - Formula and production process of injection molding tray bottom plate and injection molding tray panel - Google Patents
Formula and production process of injection molding tray bottom plate and injection molding tray panel Download PDFInfo
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- CN111849072A CN111849072A CN202010700337.9A CN202010700337A CN111849072A CN 111849072 A CN111849072 A CN 111849072A CN 202010700337 A CN202010700337 A CN 202010700337A CN 111849072 A CN111849072 A CN 111849072A
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- Prior art keywords
- bottom plate
- injection molding
- tray
- tray bottom
- panel
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- 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
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2310/00—Masterbatches
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a formula and a production process of an injection molding tray bottom plate and a panel, wherein the formula of the injection molding tray bottom plate and the panel comprises polypropylene, polyethylene, an additive and color master, and the mass ratio of the polypropylene to the polyethylene to the additive to the color master is 80-90:5-10:1-5: 1-5. The invention adopts 88.2 percent of PP material (polypropylene), 5 percent of HDPE material (polyethylene), 5 percent of POE material (thermoplastic elastomer) and 1.8 percent of color master batch, improves the dispersion effect of the filler and can also improve the weld mark strength of the product by the proportion and adding 5 percent of POE material (thermoplastic elastomer), and simultaneously, the soft chain curling structure of octene and the crystallized ethylene chain in the POE material (thermoplastic elastomer) are used as physical cross-linking points, so that the product has excellent toughness and good processability, and simultaneously, unsaturated double bonds are not contained in the molecular structure of the POE material (thermoplastic elastomer) and the product has excellent aging resistance, thereby improving the aging resistance of the product.
Description
Technical Field
The invention relates to the technical field of processing of tray bottom plates and panels, in particular to a formula and a production process of injection molding tray bottom plates and panels.
Background
Generally, a plastic tray is used in the process of transferring objects, so that the efficiency of transferring the objects is improved, the injection molding tray comprises a bottom plate and a panel, and the molding process of the plastic tray comprises injection molding and blow molding, so that the injection molding tray is continuously innovated and developed, the formula of the injection molding tray is basically polypropylene, polyethylene and color master, the injection molding tray is prepared according to a certain proportion, and finally the molding operation is performed through a related production process.
Disclosure of Invention
The invention aims to provide a formula and a production process of an injection molding tray bottom plate and a panel, and aims to solve the problems that the traditional injection molding tray formula and the traditional injection molding tray formula ratio proposed in the background technology have certain defects, the dispersion effect of fillers is poor due to one ingredient ratio, meanwhile, the formed product has low toughness, weld mark strength and the like, and the later-period processability is low.
In order to achieve the purpose, the invention provides the following technical scheme:
the formula of the injection molding tray bottom plate and the injection molding tray panel comprises polypropylene, polyethylene, an additive and color master, wherein the mass ratio of the polypropylene to the polyethylene to the additive to the color master is 80-90:5-10:1-5: 1-5.
The production process flow of the injection molding tray bottom plate is as follows:
sieving the components, namely sieving the components, and weighing the sieved components in proportion;
feeding, namely putting the proportioned and weighed raw materials into a hopper, and driving a feeding screw to rotate through the work of a motor so as to feed;
heating, namely after the mixed material is fed into the heating part through the feeding screw, enabling the mixed material to be changed into a molten state from a granular state through high-temperature heating, and then continuing to be driven by the feeding screw to advance;
the mold is closed and the material is injected, at the moment, because of the work of the hydraulic pump, the two separated tray bottom plate molds are pushed to be tightly attached, the mold closing is realized, at the moment, the injection port is opened, and the heated molten material enters the molds of the tray bottom plates;
the material is taken off after the mould is opened, at the moment, the hydraulic pump works reversely, the two closed moulds are driven to separate, and the formed tray bottom plate moves along with the half mould connected with the output end of the hydraulic pump and is pushed by the material extruding rod after moving to a certain position, so that the formed tray bottom plate falls onto the material collecting conveying belt;
Conveying and cooling, wherein the tray bottom plate falling onto the conveyor belt is conveyed into the cooling cavity through the conveyor belt, so that the tray bottom plate is completely cooled;
cutting and polishing, namely cutting the cooled corners of the tray bottom plate through a cutting machine, polishing the corners through a polishing wheel, and finally finishing.
And (4) inspecting the finished tray bottom plate, packaging and warehousing the qualified tray bottom plate, crushing the waste products of the unqualified tray bottom plate, and recycling the crushed waste products as raw materials.
The production process of the injection molding tray panel comprises the following steps:
sieving the components, namely sieving the components, and weighing the sieved components in proportion;
feeding, namely putting the proportioned and weighed raw materials into a hopper, and driving a feeding screw to rotate through the work of a motor so as to feed;
heating, namely after the mixed material is fed into the heating part through the feeding screw, enabling the mixed material to be changed into a molten state from a granular state through high-temperature heating, and then continuing to be driven by the feeding screw to advance;
closing the mould and injecting materials, wherein at the moment, because the hydraulic pump works, the two separated tray panel moulds are pushed to be tightly attached to realize mould closing, at the moment, the injection port is opened, and the heated molten materials enter the moulds of the tray panels;
The die sinking takes off the material, the hydraulic pump works reversely at this moment, will drive two closed moulds to separate, and the profiled tray panel will move with half mould that is connected with hydraulic pump output end, after moving to a certain position, will be pushed by the material squeezing pole, make the profiled tray panel drop on the conveyer belt that gathers materials;
conveying and cooling, wherein the tray panel falling onto the conveyor belt is conveyed into the cooling cavity through the conveyor belt, so that the tray panel is completely cooled;
cutting and polishing, namely cutting the cooled corners of the tray panel through a cutting machine, polishing the corners through a polishing wheel, and finally finishing;
and (4) inspecting the finished tray panel, packaging and warehousing the qualified tray panel, crushing the waste products of the unqualified tray panel, and recycling the crushed waste products as raw materials.
The additive is POE (thermoplastic elastomer), and the mass ratio of the polypropylene, the polyethylene, the additive and the color master is 88.2% of PP (polypropylene), 5% of HDPE (polyethylene), 5% of POE (thermoplastic elastomer) and 1.8% of color master.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts 88.2 percent of PP material (polypropylene), 5 percent of HDPE material (polyethylene), 5 percent of POE material (thermoplastic elastomer) and 1.8 percent of color master batch, improves the dispersion effect of the filler and can also improve the weld mark strength of the product by the proportion and adding 5 percent of POE material (thermoplastic elastomer), and simultaneously, the soft chain curling structure of octene and the crystallized ethylene chain in the POE material (thermoplastic elastomer) are used as physical cross-linking points, so that the product has excellent toughness and good processability, and simultaneously, unsaturated double bonds are not contained in the molecular structure of the POE material (thermoplastic elastomer) and the product has excellent aging resistance, thereby improving the aging resistance of the product.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: the formula of the injection molding tray bottom plate and the injection molding tray panel comprises polypropylene, polyethylene, an additive and color master, wherein the mass ratio of the polypropylene to the polyethylene to the additive to the color master is 80-90:5-10:1-5: 1-5.
The production process flow of the injection molding tray bottom plate is as follows:
sieving the components, namely sieving the components, and weighing the sieved components in proportion;
feeding, namely putting the proportioned and weighed raw materials into a hopper, and driving a feeding screw to rotate through the work of a motor so as to feed;
heating, namely after the mixed material is fed into the heating part through the feeding screw, enabling the mixed material to be changed into a molten state from a granular state through high-temperature heating, and then continuing to be driven by the feeding screw to advance;
The mold is closed and the material is injected, at the moment, because of the work of the hydraulic pump, the two separated tray bottom plate molds are pushed to be tightly attached, the mold closing is realized, at the moment, the injection port is opened, and the heated molten material enters the molds of the tray bottom plates;
the material is taken off after the mould is opened, at the moment, the hydraulic pump works reversely, the two closed moulds are driven to separate, and the formed tray bottom plate moves along with the half mould connected with the output end of the hydraulic pump and is pushed by the material extruding rod after moving to a certain position, so that the formed tray bottom plate falls onto the material collecting conveying belt;
conveying and cooling, wherein the tray bottom plate falling onto the conveyor belt is conveyed into the cooling cavity through the conveyor belt, so that the tray bottom plate is completely cooled;
cutting and polishing, namely cutting the cooled corners of the tray bottom plate through a cutting machine, polishing the corners through a polishing wheel, and finally finishing.
And (4) inspecting the finished tray bottom plate, packaging and warehousing the qualified tray bottom plate, crushing the waste products of the unqualified tray bottom plate, and recycling the crushed waste products as raw materials.
The production process of the injection molding tray panel comprises the following steps:
sieving the components, namely sieving the components, and weighing the sieved components in proportion;
Feeding, namely putting the proportioned and weighed raw materials into a hopper, and driving a feeding screw to rotate through the work of a motor so as to feed;
heating, namely after the mixed material is fed into the heating part through the feeding screw, enabling the mixed material to be changed into a molten state from a granular state through high-temperature heating, and then continuing to be driven by the feeding screw to advance;
closing the mould and injecting materials, wherein at the moment, because the hydraulic pump works, the two separated tray panel moulds are pushed to be tightly attached to realize mould closing, at the moment, the injection port is opened, and the heated molten materials enter the moulds of the tray panels;
the die sinking takes off the material, the hydraulic pump works reversely at this moment, will drive two closed moulds to separate, and the profiled tray panel will move with half mould that is connected with hydraulic pump output end, after moving to a certain position, will be pushed by the material squeezing pole, make the profiled tray panel drop on the conveyer belt that gathers materials;
conveying and cooling, wherein the tray panel falling onto the conveyor belt is conveyed into the cooling cavity through the conveyor belt, so that the tray panel is completely cooled;
cutting and polishing, namely cutting the cooled corners of the tray panel through a cutting machine, polishing the corners through a polishing wheel, and finally finishing;
And (4) inspecting the finished tray panel, packaging and warehousing the qualified tray panel, crushing the waste products of the unqualified tray panel, and recycling the crushed waste products as raw materials.
Embodiment 1, a formula of an injection molding tray bottom plate and a panel comprises polypropylene, polyethylene and color master, wherein the mass ratio of the polypropylene to the polyethylene to the color master is 85% to 10% to 5%.
Embodiment 2, a formula of an injection molding tray bottom plate and a panel comprises 85 mass percent of polypropylene, 5 mass percent of polyethylene, 5 mass percent of POE material (thermoplastic elastomer) and 5 mass percent of color master.
Embodiment 3, a formula of an injection molding tray bottom plate and a panel comprises 90% by mass of polypropylene, 5% by mass of polyethylene, 5% by mass of POE (thermoplastic elastomer) and 2% by mass of color master batch.
Example 4, a formula of an injection molding tray bottom plate and a panel comprises 90% by mass of polypropylene, 5% by mass of polyethylene, 5% by mass of a POE material (thermoplastic elastomer), and 3% by mass of a color masterbatch.
Example 5, a formula of an injection molding tray bottom plate and a panel comprises polypropylene, polyethylene, a POE material (thermoplastic elastomer) and a color master, wherein the mass ratio of the polypropylene, the polyethylene, the POE material (thermoplastic elastomer) and the color master is 89%, 5%, 3% and 3%.
Example 6, a formula of an injection molding tray bottom plate and a panel comprises polypropylene, polyethylene, POE material (thermoplastic elastomer) and color masterbatch, wherein the mass ratio of the polypropylene, the polyethylene, the POE material (thermoplastic elastomer) and the color masterbatch is 89%, 5%, 1%, and 4%.
Example 7, a formulation of an injection molding tray bottom plate and a panel comprises polypropylene, polyethylene, POE material (thermoplastic elastomer) and color masterbatch, wherein the mass ratio of the polypropylene, the polyethylene, the POE material (thermoplastic elastomer) and the color masterbatch is 89% to 5% to 1% to 5%.
Embodiment 8, a formula of an injection molding tray bottom plate and a panel comprises polypropylene, polyethylene, a POE material (thermoplastic elastomer) and a color master, wherein the mass ratio of the polypropylene, the polyethylene, the POE material (thermoplastic elastomer) and the color master is 89%, 5%, 4% and 1%.
Example 9, a formulation of an injection molding tray bottom plate and a panel, which comprises 88.5 wt% of polypropylene, 5 wt% of polyethylene, 5 wt% of POE material (thermoplastic elastomer) and 2 wt% of color master.
Example 10, a formulation of an injection molding tray bottom plate and a panel, which comprises 88.2% by mass of polypropylene, 5% by mass of polyethylene, 5% by mass of POE material (thermoplastic elastomer), and 1.8% by mass of color masterbatch.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The formula of the injection molding tray bottom plate and the injection molding tray panel comprises polypropylene, polyethylene, an additive and color master, wherein the mass ratio of the polypropylene to the polyethylene to the additive to the color master is 80-90:5-10:1-5: 1-5.
2. A production process of an injection molding tray bottom plate according to claim 1, which is characterized by comprising the following specific processes:
step A1, sieving and proportioning;
firstly, screening all the components, and then weighing the screened components in proportion;
step B1, feeding;
b, then putting the proportioned and weighed raw materials into a hopper, and driving a feeding screw to rotate through the work of a motor so as to feed;
Step C1, heating;
c, feeding the mixed material into a heating part through a feeding screw, heating at high temperature to enable the mixed material to be changed into a molten state from a granular state, and then continuously driving the mixed material to advance by the feeding screw;
d1, closing the mold and injecting the material;
d, at the moment, because the hydraulic pump works, the two separated tray bottom plate molds are pushed to be tightly attached to realize mold closing, the injection port is opened at the moment, and the heated molten material enters the molds of the tray bottom plates;
step E1, opening the die to remove the materials;
e, the hydraulic pump works reversely at the moment, the two closed molds are driven to separate, and the formed tray bottom plate moves along with the half mold connected with the output end of the hydraulic pump and is pushed by the extruding rod after moving to a certain position, so that the formed tray bottom plate falls onto the collecting conveying belt;
step F1, transfer cooling;
f, conveying the tray bottom plate falling onto the conveyor belt into the cooling cavity through the conveyor belt, so that the tray bottom plate is completely cooled;
g1, cutting and polishing;
and g, cutting the cooled corners of the tray bottom plate through a cutting machine, polishing the corners through a polishing wheel, and finishing.
Step H1, checking to be qualified;
And e, inspecting the trimmed tray bottom plate, packaging qualified products for warehousing, crushing waste products of unqualified products for recycling as raw materials after crushing the waste products.
3. A production process of an injection molding tray panel according to claim 1, which is characterized by comprising the following specific processes:
step A2, sieving and proportioning;
firstly, screening all the components, and then weighing the screened components in proportion;
step B2, feeding;
b, then putting the proportioned and weighed raw materials into a hopper, and driving a feeding screw to rotate through the work of a motor so as to feed;
step C2, heating;
c, feeding the mixed material into a heating part through a feeding screw, heating at high temperature to enable the mixed material to be changed into a molten state from a granular state, and then continuously driving the mixed material to advance by the feeding screw;
d2, closing the mold and injecting the material;
d, at the moment, because the hydraulic pump works, the two separated tray panel molds are pushed to be tightly attached to realize mold closing, the injection port is opened at the moment, and the heated molten material enters the tray panel molds;
step E2, opening the die to remove the materials;
e, the hydraulic pump works reversely at the moment, the two closed molds are driven to separate, and the formed tray panel moves along with the half mold connected with the output end of the hydraulic pump and is pushed by the extruding rod after moving to a certain position, so that the formed tray panel falls onto the collecting conveyor belt;
Step F2, transfer cooling;
f, the tray panel falling onto the conveyor belt is conveyed into the cooling cavity through the conveyor belt, so that the tray panel is completely cooled;
g2, cutting and polishing;
g, cutting the corners of the cooled tray panel through a cutting machine, polishing the corners through a polishing wheel, and finishing;
step H2, checking to be qualified;
and e, inspecting the finished tray panel, packaging qualified tray panels for warehousing, crushing waste products of unqualified products, and recycling the crushed waste products as raw materials.
4. An injection molding tray bottom plate and panel formulation as claimed in claim 1, wherein said additive is POE material (thermoplastic elastomer), and the mass ratio of said polypropylene, polyethylene, POE material (thermoplastic elastomer) and color master is 88.2% PP material (polypropylene), 5% HDPE material (polyethylene), 5% POE material (thermoplastic elastomer), and 1.8% color master.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010700337.9A CN111849072A (en) | 2020-07-20 | 2020-07-20 | Formula and production process of injection molding tray bottom plate and injection molding tray panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010700337.9A CN111849072A (en) | 2020-07-20 | 2020-07-20 | Formula and production process of injection molding tray bottom plate and injection molding tray panel |
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| Publication Number | Publication Date |
|---|---|
| CN111849072A true CN111849072A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010700337.9A Pending CN111849072A (en) | 2020-07-20 | 2020-07-20 | Formula and production process of injection molding tray bottom plate and injection molding tray panel |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019042053A1 (en) * | 2017-09-01 | 2019-03-07 | 金发科技股份有限公司 | Polypropylene composition and preparation method therefor |
| CN109679193A (en) * | 2019-01-09 | 2019-04-26 | 上海樱花塑料制品有限公司 | A kind of plastic pallet moulding process and formula |
-
2020
- 2020-07-20 CN CN202010700337.9A patent/CN111849072A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019042053A1 (en) * | 2017-09-01 | 2019-03-07 | 金发科技股份有限公司 | Polypropylene composition and preparation method therefor |
| CN109679193A (en) * | 2019-01-09 | 2019-04-26 | 上海樱花塑料制品有限公司 | A kind of plastic pallet moulding process and formula |
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Application publication date: 20201030 |