JP3229747U - Easy-to-recycle disposable lunch box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily recyclable disposable lunch box capable of preventing contamination by oil stains in a lunch box, saving a cleaning agent and cleaning water in a subsequent recycling process, and reducing environmental pollution. SOLUTION: This is a disposable lunch box including a container main body 1 and a protective layer 2, and a plurality of joining points are provided on the back side of the container main body 1. The protective layer 2 is joined to the back side of the container body 1 so that it can be peeled off via the joining point. The main plastic structure of the lunch box is protected by the protective layer 2 before, during and after use. [Selection diagram] Fig. 1

Description

The present invention relates to disposable tableware, especially plastic disposable tableware that is easy to recycle.

PP (polypropylene) has excellent mechanical performance and thermal performance, and its operating temperature is generally -6 ° C to 120 ° C, so that it is particularly suitable for serving hot meals. Currently, PP is the main material for disposable lunch boxes on the market, and it decomposes at high temperature (above 280 ° C.) or under ultraviolet irradiation, but it usually takes about 90 days to decompose under natural light conditions. Generally, disposable lunch boxes are discarded as household waste after being used, but usually, household waste is rarely decomposed under natural light conditions for 90 days, and is not decomposed by ultraviolet light or high temperature. It is common to perform landfill work after simple sorting, but this alone will not disassemble the lunch box in a timely manner and will generate a large amount of solid waste.

As the cost of landfilling solid waste becomes higher and higher, the recycling and utilization of PP from solid waste is also receiving more and more attention. The PP recycling process generally includes (1) delivery sorting process, (2) crushing, washing, sun-drying, (3) color mixing, and (4) granulation. Among them, in step (2), first, the classified PP raw material is put into a crusher to perform a crushing step, and the pieces crushed in the transmission band are put into a washing tank to wash the high-pressure water stream and in the washing tank. It is carried out by passing through a plurality of rollers, repeatedly washing, sending to the next step in the transmission band, then dehydrating with a dehydrator, and then sun-drying. Disposable lunch boxes are usually used to serve a variety of food delivery dishes and may be subject to various oil stains. A large amount of cleaning agent and water are used to clean the oil stains, which also causes secondary pollution. Therefore, how to prevent oil stains on disposable lunch boxes made mainly of PP during use, and thereby reduce recycling costs and prevent contamination during recycling, is an immediate solution. It is a problem to be considered.

An object of the present invention is to provide a disposable lunch box that can be easily recycled, and the lunch box can reduce the cost during recycling and improve the recycling efficiency.

In order to solve the above technical problems, the present invention includes a container body and a protective layer, a plurality of joining points are provided on the back side of the container body, and the protective layer can be peeled off at the joining points. Provided is an easy-to-recycle disposable lunch box that is joined to the back side of 1 so that the protective layer is secured to the container body before and during use of the tableware and can be cleanly peeled off from the inside of the container body after use. ..

Further, the shape of the joining point is not limited to the point shape, but may be circular, strip-shaped or ring-shaped. In the case of a circular shape, the diameter is 0.1 to 5 mm, and in the case of a band shape or a ring shape, the band width or the ring width is 0.1 to 5 mm.

In addition, the distance between each joining point is maintained at 2-8 mm to provide the effect of gradual peeling when the protective layer is stripped from the lunch box body.

Further, in order to prevent damage at the time of peeling, the thickness of the protective layer in the range of 0.1 to 5 mm around the joining point is 1.5 to 2.5 of the thickness of the remaining protective layer. It is double.

Furthermore, since a closing mechanism is provided on the periphery of the protective layer, the protective layer after peeling can be easily closed, and leftover food and soup in the lunch box are packed to reduce spillage. be able to.

In order to further prevent the container body from being contaminated by oil stains inside the lunch box, the peripheral edge of the protective layer is higher than the container body, and the closing mechanism is provided on the outside of the container body.

The closing mechanism as described above can be a rubber strap or a pull strap and can be any conventional mechanism capable of closing a film-shaped or bag-shaped container. When the closing mechanism is a rubber string, a collar is provided on the outermost edge of the protective layer, and the collar is connected to the container body via a rubber string provided in the collar. When the closing mechanism is a pull strap, a collar is provided on the outermost edge of the protective layer, the pull strap is set in the collar, and the portion extending from the collar is used for tightening.

Further, in order to facilitate the peeling of the protective layer, a peeling port is provided at the connection point between the outer edge of the protective layer and the container body.

Using the above technical solutions, the present invention has the following advantages:

Due to the rational structural design, the main plastic structure of the lunch box is protected by a protective layer before, during and after use to prevent it from being contaminated by oil stains inside the lunch box, and in the subsequent recycling process. Cleaning agents and cleaning water can be saved, and environmental pollution can be reduced.

It is a side view of the Embodiment of this invention. It is a schematic sectional view of FIG. It is the schematic sectional drawing of another embodiment of this invention. It is a partially enlarged view of FIG. It is a side view of still another embodiment of this invention.

Hereinafter, the present invention will be further described through specific examples. Terms such as "in one embodiment" and "in a more preferred embodiment" in an embodiment include at least specific features, structures or properties associated with the embodiment in at least one implementation of the present invention. Please note that it points to. "In one embodiment" and "in a more preferred embodiment" at different locations herein do not necessarily refer to all the same embodiments, and are distinct or mutually exclusive to other embodiments. It does not have to be a selective embodiment.

As shown in FIGS. 1 to 5, the easily recyclable disposable lunch box of the present invention includes a container body 1 and a protective layer 2. A plurality of joining points (not shown) are provided on the back side of the container body 1. The protective layer 2 is joined to the back side of the container body 1 so that it can be peeled off via the joining point. Therefore, the protective layer 2 can be fixed to the container body 1 before and during use of the tableware, and can be cleanly peeled off from the inside of the container body 1 after use. In the present invention, the container body 1 may be made of a material having a certain mechanical strength such as PP that supports the entire container, and the protective layer 2 may be made of a flexible and easily decomposable material such as polylactic acid (PLA). preferable. The processing process is generally as follows. First, the parts of the container body 1 are prepared, the protective layer 2 is blended into the container body 1 by compression molding, and a joining point is formed between the protective layer 2 and the container body 1 due to high temperature during compression molding. Although it is called a joining point, the shape of the joining point is not limited to the point shape, and is selected according to the formation of the container and the joining point, and generally includes a circular shape, a band shape, or a ring shape. In the case of a circular shape, the diameter is 0.1 to 5 mm, and in the case of a band shape or a ring shape, the band width or the ring width is 0.1 to 5 mm. In one embodiment, a plurality of ring-shaped joining points are provided at the bottom of a circular lunch box, and a plurality of strip-shaped joining points are distributed on the side wall. In one embodiment, the distance between each joining point is maintained at 2-8 mm to prevent damage during peeling, as the protective layer has the effect of being gradually peeled off when peeled off from the lunch box body. Therefore, the thickness of the protective layer in the range of 0.1 to 5 mm around the joining point is 1.5 to 2.5 times the thickness of the remaining protective layer.

In a more preferred embodiment, since the closing mechanism is provided on the periphery of the protective layer 2, the protective layer after being peeled off can be easily closed, and leftover food and soup in the lunch box can be packed. You can reduce spills.

In a more preferred embodiment, the peripheral edge of the protective layer 2 is higher than the container body 1 and the closing mechanism is provided on the outside of the container body 1 in order to further prevent the container body 1 from being contaminated by oil stains in the lunch box.

The closing mechanism as described above can be any conventional mechanism capable of closing a film-shaped or bag-shaped container. In one embodiment, the closing mechanism is a rubber cord 4, which is used by connecting an extended portion of the protective layer 2 to the container body 1 via the elastic cord 4 before and during use of the tableware. After the protective layer is peeled off later, the elastic cord 4 is tightened to close the protective layer 2 (the elastic cord referred to in the present invention is not limited to the string-like shape shown in FIG. 3, but has a rod-like shape or the like. Note that it may be). In one embodiment, the closing mechanism is a pull strap 6, a collar 5 is provided on the outermost edge of the protective layer, the pull strap 6 is set within the collar 5, the protective layer 2 is peeled off, and then the pull strap. The protective layer is closed by tightening 6.

In a more preferred embodiment, in order to facilitate the peeling of the protective layer 2, a peeling port 7 is provided at a connection point between the outer edge of the protective layer 2 and the container body 1.

Hereinafter, the method for recycling the disposable lunch box of the present invention will be briefly described. During meals, food is put into the protective layer 2 so as not to contaminate the container body 1. After eating, the protective layer 2 is peeled off from the container body 1 and closed by a closing mechanism for disposal. The remaining container body 1 can be directly recycled, crushed into granules, and directly reused (compared to the prior art, the washing / drying step is omitted).

The above embodiments are solely for the purpose of explaining the technical concepts and features of the present invention, the purpose of which is to allow a person familiar with the art to understand the content of the present invention and implement it accordingly. The scope of protection of the present invention cannot be limited. All equivalent effect changes or modifications made in accordance with the spirit of the invention should be within the scope of the invention.

1 Container body 2 Protective layer 4 Rubber string 5 Color 6 Pull strap 7 Peeling means

Claims (10)

An easy-to-recycle disposable lunch box containing a container body (1) and a protective layer (2).
A plurality of joining points are provided on the back side of the container body (1), and the protective layer (2) is joined to the back side of the container body (1) so as to be peelable via the joining points, and the protective layer (2) is joined. ) Is an easy-to-recycle disposable lunch box characterized by being a flexible and easily decomposable material. The easy-to-recycle disposable lunch box according to claim 1, wherein the joining point is circular and has a diameter of 0.1 to 5 mm. The easily recyclable disposable lunch box according to claim 1, wherein the joining point is strip-shaped or ring-shaped and has a width of 0.1 to 5 mm. The easy-to-recycle disposable lunch box according to claim 2 or 3, wherein the distance between the joining points is 2 to 8 mm. The thickness of the protective layer (2) within a range of 0.1 to 5 mm around the joining point is 1.5 to 2.5 times the thickness of the remaining protective layer (2). The disposable lunch box according to any one of claims 1 to 3, wherein the disposable lunch box is easy to recycle. The disposable lunch box according to claim 1, wherein a closing mechanism is provided on the peripheral edge of the protective layer (2). The easy-to-recycle according to claim 6, wherein the peripheral edge of the protective layer (2) is higher than the container body (1), and the closing mechanism is provided on the outside of the container body (1). Disposable lunch box. The recycling according to claim 6 or 7, wherein a collar (5) is provided on the outermost edge of the protective layer (2), and the closing mechanism is a rubber string (4) set in the collar. Easy disposable lunch box. A collar (5) is provided on the outermost edge of the protective layer (2), and the closing mechanism is a pull strap (6) set in the collar (5) and partially extending from the collar 5. A disposable lunch box that is easy to recycle according to claim 6 or 7. The easy-to-recycle disposable lunch box according to claim 1, wherein a peeling means (7) is provided at a connection portion between the outer edge of the protective layer (2) and the container body (1).

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