Knife and fork plastic parts material selection According to the analysis of the use requirements of the plastic cutlery plastic parts and the requirements of the plastic parts, you can choose to use PP (polypropylene) as the raw material. Molding characteristics of polypropylene: 1. Crystalline...
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Knife and fork plastic parts material selection
According to the analysis of the use requirements of the plastic cutlery plastic parts and the requirements of the plastic parts, you can choose to use PP (polypropylene) as the raw material. Molding characteristics of polypropylene:
1. Crystalline material, low hygroscopicity, may melt and crack, prone to prolonged contact with hot metal Biodegradation
2. Excellent fluidity, the overflow value is about 0.03mm
3. The cooling speed is fast, and the pouring system and cooling system should dissipate slowly
4. The molding shrinkage range is large, the shrinkage rate is large, shrinkage holes, dents, deformation are easy to occur, and the directionality is strong
5. Pay attention to controlling the forming temperature, the directionality of the material temperature is low, especially at low temperature and high pressure,The mold temperature is lower than 50℃ and the plastic parts are not shiny, which is easy to produce poor welding and flow marks; 90℃ Warping and deformation easily occur when above
6. Plastic parts should have uniform wall thickness, avoid gaps and sharp corners to avoid stress concentration
And as a disposable product, it should not be so harmful to the environment. Polypropylene has the
The environment is not so harmful. It has the ability to easily decompose and age under the action of photooxygen than polyethylene.
The olefin is good and the formability is better, so it is better to choose polypropylene.
Selection of the number of cavities in the knife and fork mold
Considering that the plastic part is a general daily disposable product, the demand is large, and the shape of the product
The shape is simple, the cavity layout is convenient, and the dimensional accuracy is low, so it is determined to be mass production.
The mold should adopt a multi-cavity structure with one mold, while taking into account the manufacturing cost of the mold, and the overall mold
The relationship between the size of the shape and size (on the premise of meeting the requirements, try to reduce the shape size), the difficulty of mold parts processing, it is now decided to choose a mold with 16 cavities.
Hot Tags: plastic injection mould knife and fork plastic parts, China, suppliers, factory, customized, quotation, made in China, Plastic Water Dispenser Mould, Plastic injection drinking dispenser mould, basin injection mold, Plastic Knife Mould for Injection, Plastic Injection Drinking Cup Mould, Plastic Kitchenware Mould
Knife and fork plastic parts material selection
According to the analysis of the use requirements of the plastic cutlery plastic parts and the requirements of the plastic parts, you can choose to use PP (polypropylene) as the raw material. Molding characteristics of polypropylene:
1. Crystalline material, low hygroscopicity, may melt and crack, prone to prolonged contact with hot metal Biodegradation
2. Excellent fluidity, the overflow value is about 0.03mm
3. The cooling speed is fast, and the pouring system and cooling system should dissipate slowly
4. The molding shrinkage range is large, the shrinkage rate is large, shrinkage holes, dents, deformation are easy to occur, and the directionality is strong
5. Pay attention to controlling the forming temperature, the directionality of the material temperature is low, especially at low temperature and high pressure,The mold temperature is lower than 50℃ and the plastic parts are not shiny, which is easy to produce poor welding and flow marks; 90℃ Warping and deformation easily occur when above
6. Plastic parts should have uniform wall thickness, avoid gaps and sharp corners to avoid stress concentration
And as a disposable product, it should not be so harmful to the environment. Polypropylene has the
The environment is not so harmful. It has the ability to easily decompose and age under the action of photooxygen than polyethylene.
The olefin is good and the formability is better, so it is better to choose polypropylene.
Selection of the number of cavities in the knife and fork mold
Considering that the plastic part is a general daily disposable product, the demand is large, and the shape of the product
The shape is simple, the cavity layout is convenient, and the dimensional accuracy is low, so it is determined to be mass production.
The mold should adopt a multi-cavity structure with one mold, while taking into account the manufacturing cost of the mold, and the overall mold
The relationship between the size of the shape and size (on the premise of meeting the requirements, try to reduce the shape size), the difficulty of mold parts processing, it is now decided to choose a mold with 16 cavities.
Hot Tags: plastic injection mould knife and fork plastic parts, China, suppliers, factory, customized, quotation, made in China, Plastic Water Dispenser Mould, Plastic injection drinking dispenser mould, basin injection mold, Plastic Knife Mould for Injection, Plastic Injection Drinking Cup Mould, Plastic Kitchenware Mould
