Double-layer container made of composite material

Abstract

The utility model provides a double-layer container made of a composite material, which comprises a paper outer layer body without a lamination layer, the upper edge of the outer layer body outwards forms an arc-shaped curled edge, the inner surface of the bottom edge of the outer layer body is combined with backing paper without the lamination layer, and a first accommodating chamber with an upward opening is defined by the outer layer body and the backing paper; and the plastic container is sleeved in the first accommodating chamber, the plastic container is provided with a second accommodating chamber with an upward opening, the upper edge of the plastic container is provided with a rolling end, and the rolling end is fixed with the arc-shaped rolled edge in a rolling manner to form a double-layer container made of a composite material.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to a kind of composite material container of convenient recycling classification. BACKGROUND

[0002] Currently, cup is usually used to hold high-temperature beverage on the market, and the temperature of the cup is high, so an outer cup sleeve is usually needed to be set to enable consumers to use it. For example, Chinese Patent No. 200920148189.3 discloses a disposable paper-plastic vacuum cup, which comprises a cup body, an annular heat preservation sleeve is arranged on the outer side of the cup body, the upper and lower ends of the annular heat preservation sleeve are fixedly connected to the upper and lower ends or the positions close to the upper and lower ends of the cup body, and an air heat preservation layer is formed between the annular heat preservation sleeve and the cup body. The disposable paper-plastic vacuum cup has a double-layer structure, i.e., the outer plastic cup body is sleeved with a paper sleeve, and an air heat preservation layer is formed between the plastic cup body and the paper sleeve, so that a good heat preservation effect is achieved. The cup body is made of plastic, so it can not leak water, and the heat preservation sleeve is made of paper, so it can be color-printed, thereby realizing the effects of heat preservation, no water leakage and color printing. However, the inner and outer cup bodies in the patent are bonded by glue, so it is difficult to separate the plastic and the paper sleeve during recycling. Even if the plastic outer layer or the paper sleeve is separated, the glue remains, which increases the processing procedures and costs during recycling and processing.

[0003] In addition to the above-mentioned plastic inner cup and paper outer cup, except for the direct use of glue to bond the two, some developers have developed a double-layer container, including a bottomed inner container made of plastic and a cylindrical outer layer made of paper, the outer layer is sleeved on the outer surface of the inner container, a locking structure is arranged between the outer layer and the inner container for clamping the outer layer on the outer surface of the inner container, the locking structure is located at the lower part or the middle and lower part of the double-layer container, including an annular groove and an annular protrusion, the annular groove is recessed along the radial direction of the inner container, thereby forming on the outer surface of the inner container, having upper and lower groove walls, which are directly formed when the inner container is pressed into shape, and the cross-sectional shape is arc-shaped, the annular protrusion is formed by winding on the inner surface of the outer layer, which is wound from the bottom of the outer layer to the inner surface, according to different processes, it can be wound into a circular or elliptical shape, the annular protrusion is embedded in the annular groove, and the width of the annular protrusion is greater than the depth of the annular groove, so that there is a gap between the outer wall of the inner container and the inner wall of the outer layer. In order to ensure that there is enough gap at the locking structure, the part near the bottom of the inner container is inwardly contracted, so that the gap is increased. The annular protrusion formed by winding can be adjusted, when a larger gap is needed, the outer diameter of the annular protrusion can be increased, and in actual production, the gap can be adjusted more easily according to different use environments. However, the above-mentioned locking structure is complex, the bottom of the outer layer needs to be hollow to form the annular protrusion part, and the upper edge of the inner container and the outer layer is only fixed in an abutting manner, the lips of the consumer will contact the paper outer layer when drinking, which is easy to cause the outer layer to soften and separate from the inner container due to contact with water. Moreover, the outer layer has no bottom, which makes the consumer pay special attention not to touch the bottom of the inner container to avoid being scalded. Practical new type content

[0004] In view of the environmental protection problems such as the difficulty of recycling and reuse of the composite container on the market at present, the purpose of the present application is to provide a double-layer container of composite material which is convenient to separate.

[0005] The present application provides a double-layer container of composite material, characterized in that it comprises:

[0006] A paper outer layer without a film layer, the upper edge of the outer layer forms a circular arc-shaped edge, and the inner surface of the bottom edge of the outer layer is combined with a bottom paper without a film layer, the outer layer and the bottom paper define a first container chamber with an opening upward;

[0007] A plastic container fitted in the first container chamber, the plastic container has a second container chamber with an opening upward, and the upper edge of the plastic container has a folding end, which folds and fixes the circular arc-shaped edge.

[0008] The double-layer container of composite material, wherein: the paper is one of virgin paper, recycled paper and craft paper for food.

[0009] The double-layer container of composite material, wherein the container is one of a cup, a box, a bowl, a cylinder, and a plate.

[0010] The double-layer container of composite material, wherein the plastic container is made of PP, PE, PET, or degradable plastic material.

[0011] The double-layer container of composite material, wherein the outer layer body is formed by folding and adhering two ends of a fan-shaped sheet.

[0012] The double-layer container of composite material, wherein the outer layer body has a tear line on its surface, and the tear line forms one of an n-shaped body, a U-shaped body, and a rectangular body.

[0013] The double-layer container of composite material, wherein the tear line is arranged at a position other than the folding and adhering position of the two ends of the fan-shaped sheet.

[0014] The double-layer container of composite material, wherein the folded end comprises an extension section extending outward from the upper edge of the plastic container, and the extension section extends downward to form a covering section, and the covering section and the body of the plastic container form a covering groove.

[0015] The double-layer container of composite material, wherein the outer layer body is formed with a pattern, and the pattern is formed by printing, stamping, laser marking, or branding.

[0016] The paper arc-shaped edge of the plastic container is folded and covered by the folded end of the upper edge of the plastic container, so that the lips of a consumer do not touch the paper outer layer body when drinking, and the n-shaped body, U-shaped body, or rectangular body tear line design allows the consumer to easily separate the paper outer layer body from the plastic container after use for recycling and reuse. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a fan-shaped sheet and a base paper decomposition diagram of the utility model.

[0018] Figure 2 It is an outer layer body perspective view of the utility model.

[0019] Figure 3 It is an outer layer body and a plastic container perspective decomposition diagram of the utility model.

[0020] Figure 4 It is an outer layer body and a plastic container perspective view of the utility model.

[0021] Figure 5 It is an outer layer body and a plastic container combination cross-sectional view of the utility model.

[0022] Figure 6 It is an outer layer body tear line tearing diagram of the utility model.

[0023] Figure 7 Another outer body tear line tear open schematic view of the utility model.

[0024] Mark explanation: A-double layer container;1-outer body;11-fan piece body;12-bottom edge;13-circular arc hem;14-first chamber;15-tear line;151-tear piece;16-paste place;161-environmental protection glue;2-bottom paper;3-plastic container;31-second chamber;32-fold end;321-extension section;322-coating section;33-body;34-coating groove. Specific implementation

[0025] The following by the implementation of the characteristics of the utility model, first please refer to Figures 1-5 The utility model provides a convenient separation's composite material's double layer container A, it includes: a paper quality outer body 1 without film layer, outer surface of outer body 1 can print pattern or utilize steel seal, laser, branding way and press out required pattern, the paper quality can be food raw paper, regenerated paper, craft paper etc. one of them, in the utility model is with circular cup as example, including but not limited to the circular cup, the outer body 1 is by a fan piece body 11 both ends fold and stick and is formed, the paste place 16 is coated with environmental protection glue 161, and the inner surface of the bottom edge 12 of the outer body 1 is combined with a bottom paper 2 without film layer, the combination mode can be coated with environmental protection glue 161 on the inner surface of the bottom edge 12 or the periphery of the bottom paper 2 is coated with environmental protection glue 161, the environmental protection glue 161 is its main component EVE (ethylene-vinyl acetate copolymer adhesive) or water-based PLA (poly lactic acid) glue or water-based PBS (with succinic acid butyl glycol ester) glue, the upper edge of outer body 1 forms a circular arc hem 13 outward, the outer body 1 and bottom paper 2 define a first chamber 14 with the opening upward;And a plastic container 3 that is fitted in the first chamber 14, the material of plastic container 3 can be PP, PE, PET, PLA etc. environmental protection material or degradable plastic material, the plastic container 3 has a second chamber 31 with the opening upward, the second chamber 31 can hold beverage, for example coffee, hot water, tea etc., and the top edge of the plastic container 3 forms fold end 32 outward, please continue to refer to Figures 4-5 The fold end 32 includes an extension section 321 outward from the upper edge of the plastic container 3, the extension section 321 extends a coating section 322 downward, the coating section 322 and the body 33 of the plastic container 3 form a coating groove 34, the coating groove 34 covers the circular arc hem 13 of the outer body 1, to form a composite material's double layer container A.

[0026] Please refer to Figure 2 、 Figure 6 、 Figure 7As shown, in the further embodiment of the utility model, the outer layer body 1 surface has tear line 15, the tear line 15 surrounds and forms n-shaped body, U-shaped body or rectangular body tear piece 151, because the two ends of outer layer body 1 are coiled and pasted place 16 will have the state of the overlap of two outer layer bodies 1, make pasted place 16 thickness thick, not easy to tear open and separate, in the embodiment of the utility model, the tear line 15 is arranged at the coiled and pasted place 16 of the two ends of non-fan-shaped piece body 11, when the consumer uses the double-layer container A, because the outer layer body 1 is single layer, the consumer can easily press the tear line 15 of n-shaped body or U-shaped body with finger to make the outer layer body 1 break, then tear open and separate the outer layer body 1 and plastic container 3, convenient for classification and recycling.

[0027] The structure design makes the utility model have the following advantages:

[0028] 1. Make full use of the use of non-laminated paper, omit the procedure of coating the outer layer with a laminated layer, reduce the manufacturing cost.

[0029] 2. Use recycled paper to improve the value of recycling economy, reduce carbon emissions and environmental pollution.

[0030] 3. The outer layer without a laminated layer is combined with the plastic container, which has a heat-proof and heat-insulating effect, and is particularly suitable for containing heated beverages.

[0031] 4. Because the double-layer container without a laminated layer can be directly microwaved, unlike traditional containers with a laminated layer, the laminated layer will melt and contaminate the food due to microwave heating.

[0032] 5. The tear line of the outer layer is designed at the non-coiled and pasted place, so that the consumer can easily separate the torn paper outer layer from the plastic container, making classification convenient.

[0033] 6. The paper outer layer without a laminated layer can be directly dissolved and reprocessed after recycling, without the need to separate the laminated layer from the paper.

[0034] The above is only a preferred embodiment of the utility model, and should not limit the scope of the utility model, that is, any simple equivalent changes and modifications made according to the content of the utility model still belong to the scope covered by the utility model patent.

Claims

1. A double-layered container of composite material, characterized by, The utility model relates to a paper outer layer body without a film layer, the upper edge of the outer layer body is outwardly formed with a circular-arc-shaped edge curling, and the inner surface of the bottom edge of the outer layer body is combined with a bottom paper without a film layer, and the outer layer body and the bottom paper define a first container room with an opening upward. A plastic container is sleeved in the first container room, the plastic container has a second container room with an opening upward, and the upper edge of the plastic container has a curling end, and the curling end is curled and fixed with the circular-arc-shaped edge curling. The paper is one of food raw paper, regenerated paper and industrial paper.

2. The composite dual-layer container of claim 1, wherein: The container is one of a cup, a box, a bowl, a cylinder and a plate.

3. The composite dual layer container of claim 1, wherein: The plastic container is made of environment-friendly materials such as PP, PE and PET or degradable plastic materials.

4. The composite dual layer container of claim 1, wherein: The outer layer body is composed of two end curling and pasting of a sector-shaped piece.

5. The composite dual layer container of claim 1, wherein: The surface of the outer layer body has a tear line, and the tear line surrounds one of an n-shaped body, a U-shaped body and a rectangular body.

6. The composite dual-layer container of claim 1 or 5, wherein: The tear line is arranged at the position of non-curling and pasting of the two ends of the sector-shaped piece.

7. The composite dual layer container of claim 6, wherein: The curling end comprises an extension section extending outward from the upper edge of the plastic container, the extension section extends downward to a covering section, and the covering section and the plastic container body form a covering groove.

8. The composite dual layer container of claim 1, wherein: The outer layer body is formed with a pattern, and the pattern is made by printing, stamping, laser or branding.

9. The composite dual layer container of claim 1, wherein: ​

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