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What are the molding methods of plastic trays? Which material is better for plastic trays?
Date:2023-12-21 16:46
Plastic trays are made of plastic as raw materials, and molded by plastic treatment. There are four general methods, respectively, by injection molding, extruding-hollow blow molding, vacuum blister molding, and extrusion molding. Let's take a look at the details.
What are the molding methods of plastic trays?
1. The injection molding process is to melt the thermoplastic masterbatch by heating, and adopt the cooling molding method of high pressure injection metal mold. The injection molding tray products are smooth, smooth, and smooth.
Clean and compact, product design freedom.
2. Extrusion - hollow blow molding method
Blow molding process refers to the use of gas pressure to blow the hot cup closed in the mold into a hollow tray, generally used for the production of large double-sided plastic trays, need more
Large extruder, closing machine, mold molding speed, good product quality, high strength stiffness, long service life.
3. Vacuum plastic molding process is a thermoforming processing method, relying on vacuum force to stretch the plate deformation, with the pressure difference on both sides of the plate or mechanical pressure, after deformation
Overlay on a specific mold profile. This method requires large vacuum blister equipment, low equipment cost, low mold cost, but the product wall thickness is not uniform.
4. The plastic tray produced by this method is assembled, and the extruder, head and other equipment are used to extrude the upper and lower slats and connect the support belt, respectively
There are double wing I-shaped connecting plates which are then assembled. This method has the advantages of less investment in production equipment and mold, low cost and good cost performance.
Plastic tray Which material is better?
1, the advantages and disadvantages of PP plastic tray
(1) Advantages: light weight, good toughness, good chemical resistance, good mechanical properties, including strength, stiffness, transparency, impact resistance and corrosion resistance.
(2) Disadvantages: poor low temperature impact resistance, easy aging, easy deformation, poor weather resistance; Especially in the outdoor environment, it is easy to age.
2, PE plastic tray advantages and disadvantages
(1) Advantages: The plastic tray made of polyethylene has good wear resistance, strong impact resistance, light weight, long service life and corrosion resistance, because it contains organic solvents.
(2) Disadvantages: general mechanical properties, low tensile strength, poor creep resistance, and greater environmental impact such as drought and low temperature.
Generally speaking, the two kinds of plastic pallets have their own advantages, can not simply say that PP is good or PE is good, need to consider the specific environment, general customers will choose different materials according to different use of the environment, such as PP plastic pallets environment can adapt to high temperature, PE plastic pallets are suitable for low temperature environment; In addition, the food industry needs to use PP plastic pallets.
The above is about "What are the molding methods of plastic trays, and which material is better for plastic trays?" If you have any further questions, please feel free to contact us.
What are the molding methods of plastic trays?
1. The injection molding process is to melt the thermoplastic masterbatch by heating, and adopt the cooling molding method of high pressure injection metal mold. The injection molding tray products are smooth, smooth, and smooth.
Clean and compact, product design freedom.
2. Extrusion - hollow blow molding method
Blow molding process refers to the use of gas pressure to blow the hot cup closed in the mold into a hollow tray, generally used for the production of large double-sided plastic trays, need more
Large extruder, closing machine, mold molding speed, good product quality, high strength stiffness, long service life.
3. Vacuum plastic molding process is a thermoforming processing method, relying on vacuum force to stretch the plate deformation, with the pressure difference on both sides of the plate or mechanical pressure, after deformation
Overlay on a specific mold profile. This method requires large vacuum blister equipment, low equipment cost, low mold cost, but the product wall thickness is not uniform.
4. The plastic tray produced by this method is assembled, and the extruder, head and other equipment are used to extrude the upper and lower slats and connect the support belt, respectively
There are double wing I-shaped connecting plates which are then assembled. This method has the advantages of less investment in production equipment and mold, low cost and good cost performance.
Plastic tray Which material is better?
1, the advantages and disadvantages of PP plastic tray
(1) Advantages: light weight, good toughness, good chemical resistance, good mechanical properties, including strength, stiffness, transparency, impact resistance and corrosion resistance.
(2) Disadvantages: poor low temperature impact resistance, easy aging, easy deformation, poor weather resistance; Especially in the outdoor environment, it is easy to age.
2, PE plastic tray advantages and disadvantages
(1) Advantages: The plastic tray made of polyethylene has good wear resistance, strong impact resistance, light weight, long service life and corrosion resistance, because it contains organic solvents.
(2) Disadvantages: general mechanical properties, low tensile strength, poor creep resistance, and greater environmental impact such as drought and low temperature.
Generally speaking, the two kinds of plastic pallets have their own advantages, can not simply say that PP is good or PE is good, need to consider the specific environment, general customers will choose different materials according to different use of the environment, such as PP plastic pallets environment can adapt to high temperature, PE plastic pallets are suitable for low temperature environment; In addition, the food industry needs to use PP plastic pallets.
The above is about "What are the molding methods of plastic trays, and which material is better for plastic trays?" If you have any further questions, please feel free to contact us.
