PET plastic container blank, method for manufacturing the same and equipment thereof

Abstract

The invention relates to PET elastic container blank, which comprises from bottom to top blank bottom, blank body composed of several sections with top section as transition section of cone desk pipe structure to connect blank body and mouth, and blank mouth with exhaust channel on screw thread teeth of out circular; wherein, the blank mouth has high structural strength, well sealing property and reliability; it fits to be blown into champagne bottle bottom structure and fill bear and other drink. This invention also provides the corresponding manufacture method and equipment, which has precise size and low loss.

Description

technical field [0001] The present invention relates to a green body for blowing plastic containers, a manufacturing method and equipment for the green body, in particular to a container blank with polyethylene terephthalate resin (hereinafter referred to as PET) as the main material, And the manufacturing method and equipment of the container blank. Background technique [0002] The difference between PET material and other plastics is that it is clear and transparent, the perspective rate is no less than that of glass, it is not easy to break, and it is light in weight. Therefore, it is widely used in the manufacture of carbonated soft drinks, vegetable juices, and tea and other liquid beverage containers. . The weight of a 0.7-liter glass bottle is greater than the beverage it contains. On the contrary, the PET bottle is less than 2-5% of the total weight of a 1-liter beverage in a PET bottle. When using a PET bottle for transportation, the loss and transportation costs ...

AI Technical Summary

Problems solved by technology

The PET plastic container blank with the above structure can meet the needs of blowing a bottle body that is also a hollow cylindrical container bottle. However, when the shape design of the container bottle changes, especially in various blown bottles When there are various arcs, such as: the bottle body has expansion or contraction, or the bottom of the bottle is a champagne bottom, the use of the prior art PET plastic container blanks cannot meet the needs of the changed structure due to the limitation of the material composition by the thermal characteristics.

If the PET plastic container blank of prior art is blown into the container bottle of described change structure reluctantly, will cause bottle wall thickness local inhomogeneity, compressive strength is not enough and burst bottle, when carrying out pasteurization to container bottle content When sterilizing, heat up from the filling temperature or normal temperature of the filling to 63-70°C for 5-30 minutes of sterilization. After the container bottle is heated, the mechanical shrinkage of the plastic component will cause the bottle body to deform

At the same time, using PET bottles to pack beer is a new topic in the packaging industry. Due to the high pressure in the bottle, the bottle mouth structure in the prior art cannot ensure the safety of users. Due to internal pressure and artificial force, the bottle cap may be shot out to hurt people, and the beer will be sprayed out at the same time. Therefore, it is necessary to improve the mouth of the PET bottle, which is actually to improve the mouth of the PET plastic container blank.

Images