Stacking method of PET (Polyethylene Terephthalate) packaging bottles

Abstract

The invention discloses a stacking method of bottles made of a PET (Polyethylene Terephthalate) material through blowing, drawing and casting, which is characterized in that a bottle neck and a bottle mouth are die-cast; a bottle body is blown and drawn, an inclined surface and a horizontal surface are formed at the top of the bottle body, a bend exists between the inclined surface and the horizontal surface, and a fold is reserved on the inclined surface; a bottle bottom is provided with a concave part; a bottle is fixed through a connecting piece to form a basic stacking unit; the stacking unit is placed on the other stacking unit, so that the concave part of each bottle of the stacking unit on an upper layer can be correspondingly sleeved in the cover and the neck of each bottle of the stacking unit on a lower layer; and each bottle of the stacking unit on the lower layer is pressed, so that the inclined surface is overturned and inwards sunk at the fold and also bent at the bend, a shoulder is formed outside the bend of each bottle, and the bottom of each bottle of the stacking unit on the upper layer is respectively supported by each shoulder. The method disclosed by the invention solves the problems on stacking stability and safety of PET bottles, and the warehousing or transportation cost is lowered.

Description

technical field [0001] The present invention relates to a stacking method of packaging bottles made of PET material through blow-drawing, in particular to the bottle having a structure suitable for multi-layer placement, and the structure can be used to stack the bottles to facilitate production and use In-process warehousing and transportation. Background technique [0002] In the prior art, packaging bottles made of die-cast PE materials have good compressive strength, can be used as packaging containers such as food oil, and can also be adapted to be stacked during storage or transportation to reduce storage and transportation costs. cost. But this kind of bottle consumes a lot of materials and costs high. People usually use recycling for repeated use. Because the recycled bottles need to be cleaned, there is a problem of cleaning the bottles. It is difficult to clean all the bottles, which is unhygienic in use. hidden dangers. [0003] In recent years, packaging bottl...

AI Technical Summary

Problems solved by technology

However, the compressive strength of this type of bottle is low, and the part below the mouth is prone to deformation, which is not conducive to layering and stacking, especially for large packaging bottles with a capacity of 18 liters, the degree of deformation will become more serious

In order to solve this problem, the manufacturer usually makes the lower part of the mouth into a cone shape to enhance the compressive strength, and avoid the use of a flat surface that is likely to cause the surface to sink due to deformation, but this type of bottle takes up a lot of space during storage or transportation. Big deficiency

[0004] In addition, at present, PET packaging bottles are also stacked in layers during storage or transportation. In order to place them stably and to prevent the problem that the lower part of the mouth of the bottle is not pressed, people need to use laminates to cushion the top of the lower bottle. As a supporting layer for carrying the upper bottle, the existing problem is that since the laminate is not fixed, the bottle is prone to slip and shift during storage or transportation, and the lower part of the mouth is easily deformed, which may cause the laminate to be unstable And tilting occurs, resulting in the problem of dumping

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