CN212738854U

CN212738854U - Plastic packaging bottle with three-dimensional concave-convex pattern

Info

Publication number: CN212738854U
Application number: CN202020954725.5U
Authority: CN
Inventors: 许小飞
Original assignee: Guangdong Rifeng Plastic Packaging Industry Co ltd
Current assignee: Guangdong Rifeng Plastic Packaging Industry Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2021-03-19
Anticipated expiration: 2030-05-30

Abstract

A plastic packaging bottle with a three-dimensional concave-convex pattern comprises a plastic bottle bottom and a plastic bottle wall, wherein the plastic bottle wall is uneven to form the three-dimensional concave-convex pattern, an ink printing layer is also clamped in the middle of the plastic bottle wall and forms an ink printing pattern, the three-dimensional concave-convex pattern is overlapped with the ink printing pattern in position, and the pattern content is correspondingly the same; the plastic layer positioned outside the printing ink printing layer is a transparent plastic layer. The utility model discloses can be formed with three-dimensional concave-convex pattern and printing ink pattern simultaneously, therefore the existing three-dimensional visual effect of pattern of packing bottle can have bright-colored color again for the packing bottle seems fresh taste, strengthens appeal.

Description

Plastic packaging bottle with three-dimensional concave-convex pattern

Technical Field

The utility model belongs to the technical field of the plastic packaging bottle, concretely relates to plastic packaging bottle with three-dimensional unsmooth pattern.

Background

Plastic packaging bottles are widely used for packaging goods. The production process of plastic packaging bottles generally comprises two steps, wherein the first step is an injection molding step, namely, a bottle blank in a substantially straight cylindrical shape is prepared by adopting an injection molding mode, the second step is a blow molding step, the bottle blank obtained in the first step is heated to a softening state and then is sent into a mold, compressed air is sent into an inner cavity of the bottle blank, and then the bottle blank is blown, the blank wall becomes thin, and a bottle body is obtained.

In order to enhance the attractiveness of the commercial product, people often form patterns on plastic packaging bottles. The pattern on the existing plastic packaging bottle is divided into two patterns, wherein the first pattern is an ink printing pattern formed by adopting ink printing; the second is a three-dimensional concave-convex pattern, namely a pattern formed by the concave-convex surface of the bottle body, and the three-dimensional concave-convex pattern is formed according to the following principle: the inner surface of a metal mould adopted in the blow molding step is carved with concave-convex patterns in advance, and in the blow molding process, the bottle blank is blown and attached to the inner surface of the concave-convex metal mould, so that the three-dimensional concave-convex patterns are formed.

However, in the prior art, the same plastic packaging bottle pattern can only be one of an ink printing pattern or a three-dimensional concave-convex pattern, but cannot have the plastic packaging bottle pattern and the three-dimensional concave-convex pattern at the same time. This is because, if a three-dimensional uneven pattern is formed first, it is difficult to continue printing a pattern on the surface with ink due to unevenness of the bottle wall surface; on the contrary, if the bottle body is printed with the ink pattern before becoming uneven, that is, the ink pattern is printed on the smooth and flat surface of the bottle blank before blow molding (stretch blow molding), the ink layer on the outer surface of the bottle body with high temperature is easy to fall off and stick to the inner surface of the mold in the blow molding step, and thus the feasibility is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned shortcoming and provide a plastic packaging bottle with three-dimensional concave-convex pattern, it can be formed with three-dimensional concave-convex pattern and printing ink pattern simultaneously to be convenient for make.

The purpose can be realized according to the following scheme: the utility model provides a plastic packaging bottle with three-dimensional concave-convex pattern, at the bottom of plastic bottle and plastic bottle wall, plastic bottle wall unevenness and be formed with three-dimensional concave-convex pattern, its characterized in that: the middle of the plastic bottle wall is also provided with an ink printing layer, the ink printing layer forms an ink printing pattern, the three-dimensional concave-convex pattern is overlapped with the ink printing pattern, and the pattern content is correspondingly the same; the plastic layer positioned outside the printing ink printing layer is a transparent plastic layer.

The plastic layer positioned in the printing ink printing layer is an opaque plastic layer.

The utility model has the advantages of it is following and effect:

one, the utility model discloses a plastic packaging bottle had both been formed with three-dimensional concave-convex pattern, had also been formed with printing ink printed pattern, and three-dimensional concave-convex pattern overlaps with printing ink printed pattern, therefore the existing three-dimensional visual effect of pattern of packing bottle can have bright-colored color again for the packing bottle seems fresh taste, strengthens appeal.

Secondly, the printing ink pattern layer of the plastic packaging bottle of the utility model is clamped in the middle of the plastic bottle wall, thus being suitable for adopting the blow molding process, namely, the printing ink can not be adhered to the inner surface of the mold in the blow molding process; on the other hand, since the ink design layer is sandwiched between the walls of the plastic bottle, it does not contaminate the goods (particularly foods) contained in the bottle.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic view a of fig. 1.

Fig. 3 is a schematic structural diagram of an injection mold adopted in the production process of the embodiment of the present invention.

FIG. 4 is a schematic view of a transparent plastic sheet with an ink printed layer being placed in a master mold during a production process of an embodiment of the present invention.

Fig. 5 is a schematic sectional structure diagram of an intermediate product (bottle blank) obtained in the middle of the production process according to an embodiment of the present invention.

Detailed Description

A plastic packaging bottle with a three-dimensional concave-convex pattern comprises a plastic bottle bottom 5 and a plastic bottle wall 1, as shown in figures 1 and 2, wherein the plastic bottle wall 1 is uneven to form the three-dimensional concave-convex pattern; the middle of the plastic bottle wall 1 is also provided with an ink printing layer 10, the ink printing layer 10 forms an ink printing pattern, the three-dimensional concave-convex pattern is overlapped with the ink printing pattern 10, and the pattern content is correspondingly the same; the plastic layer 12 positioned outside the printing ink printing layer is a transparent plastic layer; the plastic layer 11 located inside the ink printed layer is an opaque plastic layer.

The manufacturing process of the above embodiment may be performed by the following steps:

(1) preparing an injection mold for producing a bottle blank and a blow molding mold for drawing and blowing the bottle blank; the injection mold comprises a male mold 41 and a female mold 42, the male mold 41 and the female mold 42 are combined to form a mold cavity 40 for injecting the bottle blank, and the structure of the injection mold is shown in fig. 3; the inner surface of the blow molding mould is carved with concave-convex patterns;

(2) the bottle blank is manufactured by adopting an injection molding process, and the method specifically comprises the following steps:

(21) manufacturing a transparent plastic sheet 3, wherein the transparent plastic sheet is provided with an ink printing layer, and the ink printing layer is provided with an ink printing pattern; the content of the printing ink patterns corresponds to the content of the concave-convex patterns of the blow molding mold, and the sizes of the parts corresponding to the pattern content of the transparent plastic sheet and the blow molding mold form a proportional relation, wherein the proportional value is equivalent to the proportion of the bottle blank part containing the printing ink patterns in the subsequent step (3) in blowing;

(22) rolling the transparent plastic sheet 3 into a cylinder shape and placing the same into a master mold 42 of an injection mold, wherein the transparent plastic sheet 3 is attached to the surface of the master mold, but the ink printed layer thereof does not directly contact the metal surface of the master mold 42, as shown in FIG. 4;

(23) closing the male die 41 and the female die 42 of the injection die, injecting a molten resin material into the die cavity 40 of the injection die, fusing the resin material and the transparent plastic sheet 3 into a whole, cooling and solidifying to form a bottle blank 2, withdrawing the male die 41 of the injection die from the female die 42, and taking out the bottle blank with the printing ink printing pattern; the structure diagram 5 of the bottle blank 2 shows that the middle of the bottle blank wall is provided with an ink printing layer 20, and the ink printing layer 20 is obtained by the evolution of the original ink printing layer of the transparent plastic sheet;

(3) and (3) processing the bottle blank obtained in the step (2) into a bottle body by adopting a blow molding process, which comprises the following steps:

(31) heating the bottle blank to soften the bottle blank;

(32) placing the heated bottle blank into a blow molding mold, and aligning the position of the ink printing pattern of the bottle blank to the position of the concave-convex pattern of the blow molding mold;

(33) blowing compressed air into the inner cavity of the bottle blank to blow and stretch the bottle blank to form a bottle body, wherein the outer surface of the bottle body is attached to the inner surface of a blow molding mold, and then the bottle body forms a three-dimensional concave-convex pattern which corresponds to the inner surface of the blow molding mold; and cooling and solidifying the bottle body, and finally taking out the bottle body from the blow molding mould.

Claims

1. The utility model provides a plastic packaging bottle with three-dimensional concave-convex pattern, at the bottom of plastic bottle and plastic bottle wall, plastic bottle wall unevenness and be formed with three-dimensional concave-convex pattern, its characterized in that: the middle of the plastic bottle wall is also provided with an ink printing layer, the ink printing layer forms an ink printing pattern, the three-dimensional concave-convex pattern is overlapped with the ink printing pattern, and the pattern content is correspondingly the same; the plastic layer positioned outside the printing ink printing layer is a transparent plastic layer.