CN214737007U

CN214737007U - Degradable coated paper for cup and cup

Info

Publication number: CN214737007U
Application number: CN202120946868.6U
Authority: CN
Inventors: 孙守文; 代明水
Original assignee: Matsumoto Coating Technology Kunshan Co ltd
Current assignee: Matsumoto Coating Technology Kunshan Co ltd
Priority date: 2021-05-06
Filing date: 2021-05-06
Publication date: 2021-11-16
Anticipated expiration: 2031-05-06

Abstract

The utility model discloses a coated paper and a cup for a degradable cup, wherein the coated paper comprises a substrate layer and a coating layer, the coating layer is a water-based degradable coating layer, the total thickness of the coating layer is 6-27 mu m, the thickness of the substrate layer is 250-350 mu m, and the surface smoothness of the substrate layer is 80-120S; the coating layer is provided with three layers, which are respectively defined as a first coating layer, a second coating layer and a third coating layer from inside to outside, and the thicknesses of the first coating layer, the second coating layer and the third coating layer are respectively 2-9 μm. The utility model discloses a coated paper that surface coating multilayer waterborne degradable coating layer at the substrate layer was made, under the condition that waterproof nature satisfies the requirement, easy degradation, the environmental protection can be used to retrieve and directly make paper again.

Description

Degradable coated paper for cup and cup

Technical Field

The utility model belongs to the technical field of coated paper, in particular to in a coated paper and cup.

Background

The cup paper is used for manufacturing paper cups, and the existing cup paper is generally formed by coating a film on the surface of a paper base, namely plastic particles are melted, then the melted plastic particles are extruded by a screw rod, and the film is coated on the surface of a paper base layer without drying and the like. The cup made of the cup paper has the advantages that the water resistance is good because the film formed by melting plastic particles is adopted, and the defects that the cup is not easy to degrade and recycle, is not environment-friendly and pollutes the environment because the plastic film is adopted.

In addition, the existing cup adopts a single-layer structure, so that the anti-scalding and anti-slip performance is not good enough.

Therefore, the present invention is to provide a cup paper and a cup which can overcome the above disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a degradable cup is with scribbling coated paper and cup, through the coated paper that the surface coating multilayer waterborne degradable coating layer at the substrate layer made, under the condition that waterproof nature satisfies the requirement, easy degradation, the environmental protection can be used to retrieve and directly make paper again.

In order to solve the technical problem, the utility model discloses a technical scheme be:

the utility model provides a degradable coated paper for cup, the coated paper includes substrate layer and coating layer, the coating layer is waterborne degradable coating layer, the gross thickness of coating layer is 6-27 μm, the thickness of substrate layer is 250-350 μm, the surface smoothness of substrate layer is 80-120S;

the coating layer is provided with three layers which are respectively defined as a first coating layer, a second coating layer and a third coating layer from inside to outside, and the thicknesses of the first coating layer, the second coating layer and the third coating layer are respectively 2-9 mu m.

Further, the coating layer is a poly (butylene adipate/terephthalate) layer or a poly (butylene adipate/succinate) copolymer layer.

Further, the thickness of the third coating layer is 5-9 μm, the surface of the third coating layer is a micro-rough surface for water repellency, and the micro-rough surface is a rough surface formed by arranging concave parts and convex parts at intervals;

the convex parts are spherical convex parts, the width of each spherical convex part is 4-6 mu m, the height of each spherical convex part is 2-5 mu m, and the distance between any two adjacent spherical convex parts is 8-12 mm.

Further, the substrate layer is a paper base layer.

The utility model also provides an use the degradable cup with the cup of scribbling the preparation of coated paper, the cup include by the cup body and the bottom of cup that coated paper made, coating layer is for being located the inboard of cup.

Further, the cup body is of a three-layer structure, the three-layer structure comprises the coated paper positioned on the inner layer, the base paper positioned on the outer layer and corrugated paper positioned between the coated paper and the base paper, and the thickness of the corrugated paper is 0.4-0.8 mm.

Further, the surface of the base paper is an uneven surface that increases friction.

The utility model has the advantages that:

the utility model comprises a substrate layer and a coating layer, wherein the coating layer is an aqueous degradable coating layer, the total thickness of the coating layer is 6-27 μm, the thickness of the substrate layer is 250-350 μm, and the surface smoothness of the substrate layer is 80-120S; the coating layer is provided with three layers, the coated paper prepared by coating the multiple layers of the water-based degradable coating layers on the surface of the substrate layer is easy to degrade and environment-friendly under the condition that the waterproof property meets the requirement, and can be recycled and directly used for papermaking;

furthermore, the surface of the third coating layer of the utility model is a micro rough surface for hydrophobic, and the micro rough surface is a rough surface formed by arranging concave parts and convex parts at intervals, so that the surface of the coating layer is changed into a super hydrophobic surface, similar to the hydrophobic lotus leaf effect, and water drops can be condensed into water drops on the lotus leaf surface, thereby achieving the hydrophobic function, further improving the hydrophobic property of the coating layer, and having better waterproof effect;

furthermore, the utility model discloses a cup of making by above-mentioned coated paper, its cup body department is three layer construction, and three layer construction is including being located the inlayer coated paper, being located outer body paper and being located the corrugated paper between the two, and the thickness of corrugated paper is 0.4-0.8mm, except having the advantage that above-mentioned coated paper brought, still has following advantage: firstly, the three-layer structure and the corrugated paper have certain cavities, so that the heat insulation performance of the cup can be improved, and the scalding of hands can be avoided; secondly, the uneven surface of the outer layer of base paper, which is convenient for increasing friction, improves friction force and avoids the problem that the cup is slippery to hands and falls off.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

FIG. 1 is a cross-sectional view of the coated paper of example 1;

FIG. 2 is a partial enlarged view of the surface of the third coating layer of example 1;

FIG. 3 is a schematic structural view of example 2;

FIG. 4 is a partial cross-sectional view of embodiment 2 with the cup body expanded;

the parts in the drawings are marked as follows:

the coating paper comprises a coated paper 10, a base material layer 101, a first coating layer 102, a second coating layer 103, a third coating layer 104, spherical concave parts 1041, spherical convex parts 1042, the width W of the spherical convex parts, the height H of the spherical convex parts, the distance D between any two adjacent spherical convex parts, a base paper 20, a corrugated paper 30, a cup body 401 and a cup bottom 402.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and the advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention. The present invention can also be implemented in other different ways, i.e. different modifications and changes can be made without departing from the scope of the present invention.

Example (b): as shown in fig. 1 to fig. 2, a coated paper for a degradable cup, the coated paper comprises a substrate layer 101 and a coating layer, the coating layer is an aqueous degradable coating layer, the total thickness of the coating layer is 6-27 μm, the thickness of the substrate layer is 250-350 μm, and the surface smoothness of the substrate layer is 80-120S;

the coating layer is provided with three layers which are respectively defined as a first coating layer 102, a second coating layer 103 and a third coating layer 104 from inside to outside, and the thicknesses of the first coating layer, the second coating layer and the third coating layer are respectively 2-9 mu m.

The coating layer is a poly adipic acid/butylene terephthalate layer or a poly adipic acid/butylene succinate copolymer layer, but is not limited thereto, and other coating layers may be used.

The thickness of the third coating layer is 5-9 μm, the surface of the third coating layer is a micro-rough surface for hydrophobicity, and the micro-rough surface is a rough surface formed by arranging concave parts 1041 and convex parts 1042 at intervals;

the convex parts are spherical convex parts, the width W of each spherical convex part is 4-6 mu m, the height H of each spherical convex part is 2-5 mu m, and the distance D between any two adjacent spherical convex parts is 8-12 mm.

The substrate layer is a paper base layer.

The coated paper in the embodiment comprises a base material layer and a coating layer, wherein the coating layer is an aqueous degradable coating layer, the total thickness of the coating layer is 6-27 mu m, the thickness of the base material layer is 250-350 mu m, and the surface smoothness of the base material layer is 80-120S; the coating layer is provided with three layers, the coated paper prepared by coating the multiple layers of the water-based degradable coating layers on the surface of the substrate layer is easy to degrade and environment-friendly under the condition that the waterproof property meets the requirement, and can be recycled and directly used for papermaking;

the surface of the third coating layer is a micro-rough surface for hydrophobicity, the micro-rough surface is a rough surface formed by arranging concave parts and convex parts at intervals, so that the surface of the coating layer is changed into a super-hydrophobic surface, the hydrophobic lotus effect is similar, water drops can be condensed into water drops on the lotus surface, the hydrophobic function is achieved, the hydrophobicity of the coating layer is further improved, the waterproof effect is better, and the like

Example 2: as shown in fig. 3 and 4, a cup prepared by using the coated paper for a degradable cup comprises a cup body 401 and a cup bottom 402 made of the coated paper, and the coating layer is positioned on the inner side of the cup.

The cup body is of a three-layer structure, the three-layer structure comprises the coated paper 10 positioned on an inner layer, base paper 20 positioned on an outer layer and corrugated paper 30 positioned between the coated paper and the base paper, and the thickness of the corrugated paper is 0.4-0.8 mm.

The surface of the base paper is an uneven surface for increasing friction.

The cup made of the coated paper has a three-layer structure at the cup body, the three-layer structure comprises the coated paper at the inner layer, the base paper at the outer layer and the corrugated paper between the coated paper and the base paper, and the corrugated paper has a thickness of 0.4-0.8mm, so that the cup has the following advantages in addition to the advantages brought by the coated paper: firstly, the three-layer structure and the corrugated paper have certain cavities, so that the heat insulation performance of the cup can be improved, and the scalding of hands can be avoided; secondly, the uneven surface of the outer layer of base paper, which is convenient for increasing friction, improves friction force and avoids the problem that the cup is slippery to hands and falls off.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same principle as the protection scope of the present invention.

Claims

1. The degradable coated paper for the cup is characterized in that: the coated paper comprises a substrate layer (101) and a coating layer, wherein the coating layer is an aqueous degradable coating layer, the total thickness of the coating layer is 6-27 mu m, the thickness of the substrate layer is 250-350 mu m, and the surface smoothness of the substrate layer is 80-120S;

the coating layer is provided with three layers which are respectively defined as a first coating layer (102), a second coating layer (103) and a third coating layer (104) from inside to outside, and the thicknesses of the first coating layer, the second coating layer and the third coating layer are respectively 2-9 mu m.

2. The coated paper for degradable cups according to claim 1, characterized in that: the coating layer is a poly adipic acid/butylene terephthalate layer or a poly adipic acid/butylene succinate copolymer layer.

3. The coated paper for degradable cups according to claim 1, characterized in that: the thickness of the third coating layer is 5-9 μm, the surface of the third coating layer is a micro-rough surface for dewatering, and the micro-rough surface is a rough surface formed by arranging concave parts (1041) and convex parts (1042) at intervals;

4. The coated paper for degradable cups according to claim 1, characterized in that: the substrate layer is a paper base layer.

5. A cup prepared using the coated paper for a degradable cup according to claim 1, characterized in that: the cup comprises a cup body (401) and a cup bottom (402) made of the coated paper, and the coating layer is located on the inner side of the cup.

6. The beaker of claim 5, wherein: the cup body department is three layer construction, three layer construction is including being located the inlayer coated paper (10), being located outer body paper (20) and being located corrugated paper (30) between the two, the thickness of corrugated paper is 0.4-0.8 mm.

7. The beaker of claim 6, wherein: the surface of the base paper is an uneven surface for increasing friction.