CN204222303U - Plastic container with double layer structure - Google Patents

Abstract

A plastic container with a double-layer structure defines a containing space. The plastic container comprises an inner layer and an outer layer adjacent to each other, and a graphic layer disposed outside the outer layer; the outer layer is thicker than the inner layer, and the outer layer is transparent, and the transparency of the inner layer is translucent to opaque. Through the opaque to translucent design of the inner layer, the inner layer can reflect the image of the graphic layer, and with the thickness difference between the outer layer and the inner layer, the graphic layer looks shadowy and three-dimensional.

Description

Plastic container with double layer structure

technical field

The utility model relates to a container, in particular to a plastic container with a double-layer structure.

Background technique

Although the existing plastic containers used to hold various products are not the main sales target, if they are properly designed, they can indeed help increase product sales. Therefore, many manufacturers of plastic containers are all looking for innovation and change in the plastic containers they produce. The common method of change is nothing more than giving plastic containers different textures and gloss, as well as color changes. The aforementioned plastic container with pearlescent effect makes the plastic container have a pearl-like texture and luster, and the following uses the change of color gradient to make the plastic container have an iridescent appearance. In addition to the above changes, printing on the surface of plastic containers is also a commonly used method. Although general printing can have various designs, it often looks quite flat and has no three-dimensional effect, which makes people feel monotonous and boring.

Contents of the invention

The purpose of the utility model is to provide a plastic container with a double-layer structure, which makes the pictures and texts arranged on the outside look shadowy and three-dimensional.

The utility model has a plastic container with a double-layer structure, which defines a containing space and includes an inner layer and an outer layer adjacent to each other inside and outside, and a graphic layer arranged outside the outer layer. The outer layer It is thicker than the inner layer, and the outer layer is transparent, and the transparency of the inner layer is translucent to opaque.

In the plastic container with a double-layer structure described in the utility model, the thickness of the outer layer is three to seven times that of the inner layer.

The plastic container with double-layer structure described in the utility model includes a bottom wall and a peripheral wall extending upward from the bottom wall, the bottom wall and the peripheral wall are both composed of the inner layer and the outer layer , characterized in that: the thickness of the outer layer of the peripheral wall is three to five times the thickness of the inner layer, and the thickness of the outer layer of the bottom wall is four to seven times the thickness of the inner layer.

The plastic container with double-layer structure described in the utility model, the inner layer and the outer layer are polymers of polyesters or polyolefins.

In the plastic container with a double-layer structure described in the present invention, the polyester polymer is PET, PETG, PCTG or PCTA.

In the plastic container with double-layer structure described in the utility model, the inner layer and the outer layer are polyacrylic polymers.

The beneficial effect of the utility model is that: through the opaque to translucent design of the inner layer, the inner layer can reflect the image of the graphic layer, and the thickness difference between the outer layer and the inner layer is matched so that the graphic The text layer seems to have a sense of shadow and a sense of three-dimensionality, so the purpose of the utility model can indeed be achieved.

Description of drawings

Fig. 1 is a perspective view of an embodiment of the plastic container with double-layer structure of the present invention; and

Fig. 2 is a sectional view of this embodiment.

Detailed ways

Referring to Fig. 1 and Fig. 2, an embodiment of the plastic container with double-layer structure of the present invention comprises a layer of inner layer 11 and a layer of outer layer 12 adjacent inside and outside, and a layer of figure arranged outside the outer layer 12 Layer 13.

From the appearance point of view, the plastic container includes a bottom wall 14 formed by the inner layer 11 and the outer layer 12 respectively, and a bottom wall 14 formed by the inner layer 11 and the outer layer 12 and extending from the bottom wall 14 to the inner layer 11 and the outer layer 12 respectively. A peripheral wall 15 extending upward. The bottom wall 14 cooperates with the peripheral wall 15 to define a receiving space 16 . In this embodiment, the appearance of the plastic container is in the shape of a bottle, but the implementation is not limited to the shape of this embodiment, and it can also be in the shape of a box, a cup, or other containers.

The inner layer 11 is made of polypropylene and is opaque, but not limited to this embodiment, and can also be translucent to opaque. The material of the inner layer 11 is not limited to polypropylene, but can also be other polymers capable of controlling transparency, such as polyester polymers, polyolefin polymers, and polyacrylic polymers. The polymers of the polyesters include terephthalate (TPA for short), ethylene glycol (Ethylene Glycol, EG for short) or 1,4-cyclohexanedimethanol (Cyclohexanedimethanol) monomers. , referred to as CHDM) copolymer. For example: PET, PETG, PCTG or PCTA. The polyacrylic polymer is, for example, polymethylmethacrylate (PMMA). In addition, the Surlyn product produced by Dupont is also suitable for manufacturing the plastic container of the present invention. As for how to control the transparency of polymers, the techniques known to the public, such as controlling crystallinity, are not the focus of the present invention, so no further explanation is given here. The so-called transparency refers to the ratio of the luminous flux passing through a material not shown in the figure to the luminous flux incident on the material, expressed as a percentage. The measurement method is to use a standard light source to irradiate the transparent or translucent material in the form of a film, sheet or plate vertically, and then convert the ratio of the luminous flux T2 passing through the material to the luminous flux T1 incident on the material into a percentage. for transparency. If expressed in a formula, the calculation method is as follows: Transparency=(T2/T1)×100%. Translucent to opaque in the present invention refers to the transparency measured by the aforementioned method, and its numerical value is less than or equal to 80%.

The outer layer 12 is also made of polypropylene and is transparent. The transparency described in the utility model refers to that the value of the measured transparency is greater than 80%. Of course, the outer layer 12 can also be made of other materials that can control the transparency as mentioned above, and it is not limited to this embodiment. The thickness of the outer layer 12 of the peripheral wall 15 is three times the thickness of the inner layer 11, but not limited to three times, at most seven times, and a preferred upper limit is five times. The thickness of the outer layer 12 of the bottom wall 14 is six times, but not limited to, the thickness of the inner layer 11 , at least four times, and at most seven times. However, it should be noted that the outer layer 12 on the bottom wall 14 should be thicker than the outer layer 12 on the peripheral wall 15 . Such a design can not only make the center of gravity of the plastic container of the present invention bias towards the bottom wall 14 to increase the standing stability of the plastic container, but also increase the abrasion resistance of the bottom wall 14 due to the thicker thickness. In addition, the thickness of the inner layer 11 is preferably uniform or similar to avoid the situation that the inner layer 11 is thicker than the outer layer 12 at different locations.

The graphic layer 13 has a heart-shaped pattern 131, and in this embodiment, planar printing is used. In addition to being directly printed on the outer layer 12, the graphic layer 13 can also be a thin film (not shown) with a pattern printed on it in practice, and then the thin film is attached to the outer layer around the outer layer. Layer 12 is not limited to the planar printing method of this embodiment. Of course, the pattern 131 of the graphic layer 13 is not limited to a heart shape, and there may be other patterns or text variations, which are not limited to this embodiment.

The inner layer 11 allows light to pass through and reflect at the same time. When the inner layer 11 has high transparency, since the intensity of the reflected light is much smaller than the intensity of the transmitted light, an observer not shown in the figure will only notice the formation of the transmitted light from the background visually. The background image of the pattern 131 will not be perceived as a reflection image 132 formed by the reflected light reflecting the pattern 131 . However, when the transparency of the inner layer 11 is low, the intensity of the reflected light is equal to or even stronger than that of the transmitted light, so that the observer can notice the image 132 formed by the reflected light. The utility model utilizes the aforementioned principle to make the inner layer 11 in a translucent to opaque state, so that the graphic layer 13 arranged outside the outer layer 12 can form an observable pattern on the inner layer 11. The image 132 utilizes the thickness difference between the outer layer 12 and the inner layer 11 to make the viewer feel that the pattern 131 of the graphic layer 13 has a sense of shadow and three-dimensionality.

To sum up, the plastic container of the present invention has a double-layer structure. Through the opaque to semi-transparent design of the inner layer 11, the inner layer 11 can reflect the image of the graphic layer 13 and match the outer layer The difference in thickness between 12 and the inner layer 11 makes the graphic layer 13 seem to have a sense of shadow and a sense of three-dimensionality, so the purpose of this utility model can indeed be achieved.

Claims (6)

1. A plastic container with a double-layer structure, which defines a container space, and includes an inner layer and an outer layer adjacent to each other, and a graphic layer arranged outside the outer layer; its It is characterized in that: the outer layer is thicker than the inner layer, and the outer layer is transparent, and the transparency of the inner layer is translucent to opaque. 2. The plastic container with double-layer structure as claimed in claim 1, wherein the thickness of the outer layer is three to seven times that of the inner layer. 3. The plastic container with double-layer structure as claimed in claim 1, the container comprises a bottom wall, and a peripheral wall extending upward from the bottom wall, the bottom wall and the peripheral wall are formed by the inner layer and the outer layer layer, characterized in that: the thickness of the outer layer of the peripheral wall is three to five times the thickness of the inner layer, and the thickness of the outer layer of the bottom wall is four to seven times the thickness of the inner layer. 4. The plastic container with a double-layer structure as claimed in any one of claims 1-3, wherein the inner layer and the outer layer are polyester polymers or polyolefin polymers. 5. The plastic container with double-layer structure as claimed in claim 4, wherein the polyester polymer is PET, PETG, PCTG or PCTA. 6. The plastic container with a double-layer structure as claimed in any one of claims 1-3, wherein the inner layer and the outer layer are polyacrylic polymers.