In today’s world economic changes in the process of the plastic bottle industry, in which the structure of the domestic industry is also in a constant state of upgrading, and in the current process of industrial upgrading, many of the value-added part of the industry will be subject to a variety of difficult business problems, but also **** challenges, will face a variety of difficulties in today’s society, we can speak according to the transformation of the storm in the plastic bottle business.
The development of the plastic bottle faces a variety of problems, we can give you a careful analysis of the plastic bottle is a labor-intensive industry, in the current rising labor costs, for the plastic bottle business, the cost of labor has a huge pressure, there is the price of raw materials is rising, but also by the rising costs of the market, the rise in raw materials is very obvious, and will bring another layer of pressure on the enterprise.
Along with the European debt crisis and the world’s economic weakness, the foreign trade orders of plastic bottles are gradually declining, many foreign trade type enterprises are constantly turning to the domestic market, which has brought very great pressure on the very competitive plastic bottle market, and the price war is becoming more and more powerful, and the profits for enterprises are becoming lower and lower.
Some of the plastic bottle manufacturers, now in a variety of pressure situations, is more should take the road of industrial upgrading, and also need to take the road of innovation in the field of plastic packaging, which will continue to improve the added value of plastic bottles, and in the production of plastic bottles and design sales in all aspects of continuous improvement.
There are two main manufacturing methods for plastic packaging bottles, extrusion blow molding and injection blow molding. The main injection molding process for plastic p ackaging bottles is, in the injection molding process, the main mold used to shape the plastic bottle contains two kinds of negative and positive mold. The injection molding machine is used to inject the plastic melt into the mold cavity under high pressure, and when the mold cavity is opened, it is important to remove the positive mold from the negative mold to eject the bottle. The following are the characteristics of injection blow molding of plastic packaging bottles.
1. The melt of the plastic packaging bottle is injected into the blank mold and is subjected to the corresponding orientation effect around the inside of the cavity. In addition, the ambient temperature of the blow molding is lower than that of extrusion blow molding, and the orientation effect produced during the blow molding process can be retained a lot, and this phenomenon can improve the overall strength of the plastic packaging bottle and other related properties.
2. The size of plastic packaging bottles is accurate and precise, and it is easier to ensure that the thickness of the plastic bottle walls is uniform and the specifications are the same according to the requirements of manufacturing.
3. The surface of the plastic packaging bottle will not form a bonding seam and does not need to be trimmed after molding. Generally, there will be no residual material on the edges, while the edges produced by extrusion blow molding are generally 5-30%. The degree of gloss of plastic packaging bottles is higher, and the transparency of plastic packaging bottles produced by molding using transparent polymers is higher.
4. The sliding bottom module can be designed on top of the blow molding mold of plastic packaging bottles, so the flexibility of the shape design of the bottom surface of plastic packaging can be relatively large. It is more suitable to be used in the manufacturing of molded printed plastic bottles and wide mouth plastic bottles.
5. In general, most of the plastic packaging bottles using injection blow molding are relatively small plastic bottles, and the rate of energy consumption will be significantly higher for products with very complex molding shapes.