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What is the processing procedure of the cosmetic packaging material hose?
by：Lisson
2021-04-07
Cosmetic packaging material hose is a part of the rubber and plastic industry. No matter what kind of cosmetic packaging material hose, it needs to be formed and processed. The molding process of cosmetic packaging material hose is the process of making plastic products from polymers such as phenolic resin, urea-formaldehyde resin, unsaturated polyester resin, etc. The processing methods include compression molding, extrusion molding, injection molding, blow molding, calendering and so on.
A total of six processes: compression molding→extrusion molding→injection molding→blow molding→calendering→foam molding.
1. Compression molding (also called compression molding in industry)
Compression molding is also called compression molding or compression molding. Compression molding is mainly used for the molding of thermosetting plastics such as phenolic resin, urea-formaldehyde resin, and unsaturated polyester resin.
2. Extrusion
Extrusion, also known as extrusion molding, is a method of using an extruder (extruder) to continuously pass heated resin through a mold to extrude products of the desired shape. Extrusion is sometimes also used in the molding of thermoset plastics and can be used in the molding of foam plastics. The advantage of extrusion is that products of various shapes can be extruded, the production efficiency is high, and the production can be automated and continuous; the disadvantage is that thermosetting plastics cannot be processed by this method in a wide range, and the product size is prone to deviation.
3. Injection
Injection molding is also called injection molding. Injection molding is a method of using an injection molding machine (or injection machine) to inject thermoplastic melt into a mold under high pressure, and then cool and solidify to obtain a product. Injection molding can also be used for the molding of thermosetting plastics and foam plastics. The advantages of injection molding are fast production speed, high efficiency, automatic operation, and the ability to form parts with complex shapes, which is especially suitable for mass production. The disadvantage is that the cost of equipment and molds is high, and it is difficult to clean the injection molding machine.
4. Blow molding
Blow molding is also called hollow blow molding or hollow molding. Blow molding is a method of inflating a hot resin parison closed in a mold into a hollow product by the pressure of compressed air. Blow molding includes two methods: blow molding and blow molding hollow products. Blow molding can be used to produce film products, various bottles, barrels, pots, and children's toys.
5. Calendering
Calendering is to process the resin and various additives through the expected treatment (kneading, filtering, etc.) through the gap between two or more calender rolls of the calender to turn into a film or sheet, and then from the calender roll A molding method in which the upper is peeled off and then cooled and shaped. Calendering is a molding method mainly used for polyvinyl chloride resin, which can produce films, sheets, plates, artificial leather, floor tiles and other products.
6. Foam molding
The process of adding appropriate foaming agents to foaming materials (PVC, PE, PS, etc.) to produce microporous structure in plastics. Almost all thermosetting and thermoplastic plastics can be made into foam cosmetic packaging hoses. According to the cell structure, it is divided into open-cell foam (most of the pores are connected to each other) and closed-cell foam (most of the pores are separated from each other). This is mainly due to the manufacturing method (divided into chemical foaming, physical foaming) And mechanical foaming).
A total of six processes: compression molding→extrusion molding→injection molding→blow molding→calendering→foam molding.
1. Compression molding (also called compression molding in industry)
Compression molding is also called compression molding or compression molding. Compression molding is mainly used for the molding of thermosetting plastics such as phenolic resin, urea-formaldehyde resin, and unsaturated polyester resin.
2. Extrusion
Extrusion, also known as extrusion molding, is a method of using an extruder (extruder) to continuously pass heated resin through a mold to extrude products of the desired shape. Extrusion is sometimes also used in the molding of thermoset plastics and can be used in the molding of foam plastics. The advantage of extrusion is that products of various shapes can be extruded, the production efficiency is high, and the production can be automated and continuous; the disadvantage is that thermosetting plastics cannot be processed by this method in a wide range, and the product size is prone to deviation.
3. Injection
Injection molding is also called injection molding. Injection molding is a method of using an injection molding machine (or injection machine) to inject thermoplastic melt into a mold under high pressure, and then cool and solidify to obtain a product. Injection molding can also be used for the molding of thermosetting plastics and foam plastics. The advantages of injection molding are fast production speed, high efficiency, automatic operation, and the ability to form parts with complex shapes, which is especially suitable for mass production. The disadvantage is that the cost of equipment and molds is high, and it is difficult to clean the injection molding machine.
4. Blow molding
Blow molding is also called hollow blow molding or hollow molding. Blow molding is a method of inflating a hot resin parison closed in a mold into a hollow product by the pressure of compressed air. Blow molding includes two methods: blow molding and blow molding hollow products. Blow molding can be used to produce film products, various bottles, barrels, pots, and children's toys.
5. Calendering
Calendering is to process the resin and various additives through the expected treatment (kneading, filtering, etc.) through the gap between two or more calender rolls of the calender to turn into a film or sheet, and then from the calender roll A molding method in which the upper is peeled off and then cooled and shaped. Calendering is a molding method mainly used for polyvinyl chloride resin, which can produce films, sheets, plates, artificial leather, floor tiles and other products.
6. Foam molding
The process of adding appropriate foaming agents to foaming materials (PVC, PE, PS, etc.) to produce microporous structure in plastics. Almost all thermosetting and thermoplastic plastics can be made into foam cosmetic packaging hoses. According to the cell structure, it is divided into open-cell foam (most of the pores are connected to each other) and closed-cell foam (most of the pores are separated from each other). This is mainly due to the manufacturing method (divided into chemical foaming, physical foaming) And mechanical foaming).
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