CN213733700U

CN213733700U - Edge-seepage-preventing paper container blank and paper container thereof

Info

Publication number: CN213733700U
Application number: CN202021718839.6U
Authority: CN
Inventors: 王建平
Original assignee: Zhejaing Discover Machinery Manufacturing Co ltd
Current assignee: Zhejaing Discover Machinery Manufacturing Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-07-20
Anticipated expiration: 2030-08-17

Abstract

A paper container blank preventing edge leakage and a paper container thereof are provided, wherein the paper container comprises a cavity rolled by the paper container blank preventing edge leakage and a bottom cover arranged at one end of the cavity. The paper container of the edge-leakage-preventing paper container blank comprises a base material and an edge covering strip arranged on the base material. The substrate comprises two of said overlapping edge trims. The edge covering strip is wrapped on one of the lap joint cut edges. The paper container blank is made into the cavity through mutually lapping and adhering two lapping trimming rolls, the two lapping trimming rolls are provided with the edge covering strips after lapping, the lapping trimming edges are positioned at the inner side of the cavity, so that liquid in the cavity cannot permeate into the base material from the lapping trimming positions where the edge covering strips are arranged, and the requirement of preventing edge permeation is met.

Description

Edge-seepage-preventing paper container blank and paper container thereof

Technical Field

The utility model belongs to the technical field of paper container, especially a prevent paper container blank and paper container that limit oozed.

Background

The paper container is a container made of paper or cardboard for packaging purposes, and can be used for packaging liquids, such as paper cups and paper bowls. In order to solve the problem of liquid leakage, the inner and outer surfaces of the paper container base material are generally provided with a drenching film. Because the existing paper container is generally only provided with the spraying film on the inner surface and the outer surface of the paper container substrate, and the cutting edge of the paper container substrate is not provided with the spraying film, when liquid is directly contacted with the cutting edge of the paper container substrate, the liquid is easy to leak into the paper container substrate from the cutting edge of the paper container substrate without being protected by the spraying film, and the service life and the packaging appearance of the paper container are influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a paper container blank and a paper container thereof, which can prevent edge leakage, so as to solve the above technical problems.

An edge-bleed resistant paper container blank includes a substrate, and an edge-wrapping strip disposed on the substrate. The base material is made by the paper material and includes two overlap joint edges of cut, the edging setting is on one of them overlap joint edge of cut. The edge covering strip is of an integrally formed U-shaped structure and comprises a first side edge, a second side edge and a third side edge, wherein the first side edge and the second side edge are arranged on the two sides of the base material respectively, and the third side edge is arranged on the cross section of the lap joint trimming edge. The first and second side edges are bonded to both sides of the substrate.

Further, the connection mode of the base material and the edge covering strip is heating welding or ultrasonic welding.

Further, the edge wrapping strip is made of one of PE, PP, PET, PLA, PBS, PBAT, PHA, PCL and plastic-free coating materials.

Further, the length of the first side edge is equal to the length of the second side edge in a cross section perpendicular to the arrangement direction of the two lap cut edges.

Further, the length of the first side edge is greater than the length of the second side edge in a cross section perpendicular to the arrangement direction of the two lap cut edges.

Further, the edge-bleed resistant paper container blank further comprises a lamination layer disposed on at least one of the two sides of the substrate.

Further, the two side surfaces of the base material are both provided with the lamination layers.

Furthermore, the first side edge and the second side edge of the edge covering strip cover the film lamination layer so that the film lamination layer is clamped between the base material and the first side edge and the second side edge.

Further, the substrate further comprises a first opening rolling cutting edge and a second opening rolling cutting edge which are positioned on two sides of the lap joint cutting edge, wherein the first opening rolling cutting edge and the second opening rolling cutting edge are arc-shaped, and the arc length of the first opening rolling cutting edge is greater than that of the second opening rolling cutting edge.

Further, the edge leakage prevention paper container blank further comprises an avoiding notch arranged at the intersection of the second roll opening trimming edge and the lap trimming edge, and the lap trimming edge on which the avoiding notch is arranged is provided with the edge covering strip.

The edge leakage prevention paper container comprises a cavity rolled by the edge leakage prevention paper container blank and a bottom cover arranged at one end of the cavity, wherein two lap joint trimming edges are mutually overlapped and bonded together and are provided with the lap joint trimming edge of the edge covering strip which is positioned at the inner side of the cavity

Furthermore, the cavity and the bottom cover are connected in an adhesion manner.

Further, the cavity is shaped like a cup, a bowl, a box, a special-shaped cylinder or a straight cylinder.

Furthermore, the two sides of the bottom cover are both provided with a film coating layer.

Further, the base material also comprises a first bead cutting edge and a second bead cutting edge which are positioned at two sides of the lap cutting edge.

Further, the edge leakage prevention paper container blank further comprises an avoiding notch arranged at the intersection of the second rolling edge cutting edge and the lap joint cutting edge, the bottom cover comprises a cover body and a rolling edge arranged on the periphery of the cover body, and the rolling edge is in press-connection with the avoiding notch.

Compared with the prior art, the utility model provides a paper container is through setting up on paper container blank the edging strip, specifically, the paper container of the paper container blank that prevents the limit and ooze includes a substrate, and a setting is in edging strip on the substrate. The base material comprises two lap-joint trimming edges, wherein one of the two lap-joint trimming edges is used for arranging the edge covering strip and is overlapped and adhered with the other lap-joint trimming edge. The edge covering strip is wrapped on one of the lap joint cut edges. The paper container blank is made into the cavity through mutually overlapping and adhering two overlapping trimming rolls, the cavity is connected with the bottom cover to form a paper container, the two overlapping trimming rolls are provided with the edge covering strips after overlapping, the overlapping trimming edges are positioned at the inner side of the cavity, so that liquid in the cavity cannot permeate into the substrate from the overlapping trimming edges provided with the edge covering strips, and the requirement of preventing edge permeation is met.

Drawings

Fig. 1 is an expanded schematic view of a paper container blank for preventing edge leakage according to the present invention.

Fig. 2 is a cross-sectional view of the edge-leakage resistant paper container blank of fig. 1 with overlap cut edges in a non-laminated arrangement.

Fig. 3 is a cross-sectional view of the edge-leakage resistant paper container blank of fig. 1 with the overlap cut single ply film disposed.

Fig. 4 is a cross-sectional view of the overlap cut dual-ply film arrangement of the edge-bleed resistant paper container blank of fig. 1.

Fig. 5 is a schematic view of a paper container made from the edge-leakage resistant paper container blank of fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to 5, it is a schematic structural diagram of the edge-leakage-preventing paper container blank and the paper container thereof provided by the present invention. The paper container includes a cavity 100, and a bottom cover 200 disposed at one end of the cavity 100. It is contemplated that the paper container may further include other functional structures, such as a curled edge disposed at the other end of the cavity 100, an advertisement, a logo, etc. printed on the outer sidewall of the cavity 100, or an additional sleeve sleeved on the outer sidewall of the cavity 100 to facilitate thermal insulation, etc., which are well known to those skilled in the art and will not be described herein again.

The chamber 100 is formed by rolling a blank of a paper container that is resistant to edge leakage. The edge leakage prevention paper container blank comprises a base material 10, at least one lamination film 20 arranged on the base material 10, an edge covering strip 30 arranged on the base material 10, and an avoiding notch 40 arranged on the base material 10. It is contemplated that the edge-leakage-proof paper container blank may further include other functional modules, such as glue layers, insulation layers, etc., which are well known to those skilled in the art and will not be described herein.

The thickness and size of the substrate 10 can be set according to actual requirements. The substrate 10 is made of a paper material. The base material 10 includes two lap cut edges 11, and two first and second bead cut

edges

12 and 13 provided on both sides of the lap cut edges 11. One of the two overlapping trims 11 is used for arranging the edge covering strip 30 and overlaps and is adhered with the other overlapping trim 11 to form the cavity 100. The first and second bead trims 12 and 13 are arc-shaped, and the arc length of the first bead trim 12 is greater than the arc length of the second bead trim 13, so that a tube with different diameters at two ends can be formed when the cavity 100 is rolled. It is contemplated that the first and second crimp edge cuts 12, 13 may be straight edges and have the same length to be crimped into a straight tube.

The lamination layer 20 is respectively disposed on two side surfaces of the substrate 10, or may be disposed on only one of the two side surfaces of the substrate 10, that is, the lamination layer 20 has two different disposing manners on the substrate 10, that is, a single lamination and a double lamination. When a single lamination is used, the lamination layer 20 should be disposed on the inner sidewall of the chamber 100. It is contemplated that in some applications, the leaching layer 20 may be absent altogether.

When no lamination is provided, as shown in fig. 2, the lamination layer 20 is not provided on both sides of the substrate 10, which is suitable for packaging some solid objects, such as bread.

When the single lamination is arranged, as shown in fig. 3, the inner surface of the base material 10 is provided with the lamination layer 20, and the lamination layer 20 arranged on the inner surface of the base material 10 improves the permeability resistance and has a certain heat insulation effect, so that the packaging bag can be suitable for packaging some liquid with higher temperature, such as hot coffee, hot drinks and the like.

When the double-lamination is arranged, as shown in fig. 4, the lamination layers 20 are arranged on the inner and outer surfaces of the base material 10, and when some liquid with lower temperature, such as cold drink, is packaged, the liquid is condensed into water vapor on the outer surface, and the lamination layers 20 arranged on the outer surface of the base material 10 can prevent the water vapor on the outer surface from permeating into the base material 10, so that the permeation resistance is further improved, and the quality is improved and the shelf life is prolonged.

The edge covering strip 30 is covered on one of the lap joint trimming edges 11 and is of an integrally formed U-shaped structure. The edge strip 30 includes first and

second side edges

31 and 32 respectively disposed at both sides of the substrate 10, and a third side edge 33 disposed on the cross section of the overlap trim 11. The first and

second side edges

31, 32 are bonded to both sides of the base material 10, and the third side edge 33 is bonded to the cross section of the lap cut edge 11. When the substrate 10 is set without a coating, the edge strip 30 covers the substrate 10 and is connected to the substrate 10 by a hot bonding method, so that the connection between the lap cut edge 11 and the edge strip 30 is firmer. When the substrate is a single-lamination or double-lamination arrangement 10, the first and

second side edges

31 and 32 cover the lamination layer 30, so that the lamination layer 20 is sandwiched between the substrate 10 and the first and

second side edges

31 and 32. The length of the first side edge 31 is greater than or equal to the length of the second side edge 32 on the cross section perpendicular to the arrangement direction of the two overlapping cut edges 11, so that when the cavity 100 is rolled, the other overlapping cut edge 11 can just cover the first side edge 31, and the attractiveness of the paper container can be improved. The edge covering strip 30 may be made of a polymer material, such as one of PE, PP, PET, PLA, PBS, PBAT, PHA, PCL, and plastic-free coating materials, which is prior art and will not be described herein.

The relief cut 40 is arranged at the intersection of the second bead 13 and an overlap cut 11 provided with the edge strip 30. The relief cuts 40 facilitate subsequent piping, which will be described below in conjunction with the bottom cover 200.

When rolling, the two overlapping cut edges 11 are overlapped and adhered together to form the cavity 100. The two overlapping cut edges 11 are provided with the edge covering strips 30 after overlapping, the overlapping cut edges 11 are positioned at the inner side of the cavity 100, so that liquid in the cavity 100 cannot permeate into the base material 10 from the overlapping cut edges 11 provided with the edge covering strips 30, and the requirement of edge leakage prevention is met. After rolling, the cavity 100 may be shaped like a cup, a bowl, a box, a special cylinder, or a straight cylinder. In the present embodiment, the chamber 100 has a cup shape.

The bottom cover 200 is conventional in itself and includes a cover body (not shown) disposed at one end of the chamber 100 and a rolled edge (not shown) disposed at the periphery of the cover body. The inner and outer surfaces of the bottom cover 200 are provided with a lamination layer to prevent liquid from leaking out of the bottom cover 60, thereby further improving permeation resistance. The rolled edge is pressed on the avoidance notch 40, so that the avoidance notch 40 is positioned between the rolled edge and the two overlap cut edges 11, the thickness of the rolled edge and the overlap cut edges 11 at the avoidance notch 40 can be reduced, rolling is facilitated, but the rolled edge and the overlap cut edges are in the prior art, and detailed description is omitted here.

Compared with the prior art, the utility model provides a paper container is through setting up on paper container blank edge banding strip 30, specifically, the paper container of the paper container blank that prevents the limit and ooze includes a substrate 10, and one sets up edge banding strip 30 on the substrate 10. The substrate 10 comprises two of the lap cut edges 11, and one of the two lap cut edges 11 is used for arranging the edge covering strip 30 and is overlapped and adhered with the other lap cut edge 11. The edge strip 30 is wrapped on one of the overlap cut edges 11. The paper container blank is made into the cavity 100 by mutually overlapping and adhering two overlapping cut edges 11, the cavity 100 is connected with the bottom cover 200 to form a paper container, the two overlapping cut edges 11 are provided with the edge covering strips 30 after overlapping, the overlapping cut edges 11 are positioned at the inner side of the cavity 100, so that liquid in the cavity 100 cannot permeate into the substrate 10 from the overlapping cut edges 11 provided with the edge covering strips 30, and the requirement of preventing edge permeation is met.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. An edge-bleed resistant paper container blank characterized by: prevent paper container blank that limit oozed includes a substrate, and a setting is in binding strip on the substrate, the substrate is made by paper material and includes two overlap joint side cuts, binding strip sets up on one of them overlap joint side cut, binding strip is integrated into one piece's U-shaped structure and is including setting up respectively the first of the both sides of substrate, second side, and set up in third side on the cross-section of overlap joint side cut, first, second side bond in the both sides of substrate.

2. The edge-bleed resistant paper container blank as recited in claim 1, wherein: the connection mode of the base material and the edge covering strip is heating welding or ultrasonic welding.

3. The edge-bleed resistant paper container blank as recited in claim 1, wherein: the edge wrapping strip is made of one of PE, PP, PET, PLA, PBS, PBAT, PHA, PCL and plastic-free coating materials.

4. The edge-bleed resistant paper container blank as recited in claim 1, wherein: the length of the first side edge is equal to the length of the second side edge on a cross section perpendicular to the arrangement direction of the two overlapping cut edges.

5. The edge-bleed resistant paper container blank as recited in claim 1, wherein: the length of the first side edge is greater than that of the second side edge on a cross section perpendicular to the arrangement direction of the two overlapping cut edges.

6. The edge-bleed resistant paper container blank as recited in claim 1, wherein: the edge-bleed resistant paper container blank further comprises a cling film layer disposed on at least one of the two sides of the substrate.

7. The edge-bleed resistant paper container blank of claim 6 wherein: the two side surfaces of the base material are provided with the laminating layers.

8. The edge-bleed resistant paper container blank of claim 6 wherein: the first side edge and the second side edge of the edge covering strip are covered on the film laminating layer, so that the film laminating layer is clamped between the base material and the first side edge and the second side edge.

9. The edge-bleed resistant paper container blank as recited in claim 1, wherein: the substrate further comprises a first opening rolling edge and a second opening rolling edge which are positioned on two sides of the lap joint edge cutting, and the first opening rolling edge and the second opening rolling edge are arc-shaped, and the arc length of the first opening rolling edge is greater than that of the second opening rolling edge.

10. The edge-bleed resistant paper container blank as recited in claim 9, wherein: the edge leakage preventing paper container blank further comprises an avoiding notch arranged at the intersection of the second edge rolling cutting edge and the lap joint cutting edge, and the lap joint cutting edge of the avoiding notch is provided with the edge covering strip.

11. A paper container characterized by: the paper container comprises a cavity body rolled by the edge leakage preventing paper container blank according to any one of claims 1 to 10, and a bottom cover arranged at one end of the cavity body, two overlapping cut edges are overlapped and bonded with each other, and the overlapping cut edge provided with the edge covering strip is positioned at the inner side of the cavity body.

12. The paper container of claim 11, wherein: the cavity and the bottom cover are connected in an adhesion mode.

13. The paper container of claim 11, wherein: the cavity is in the shape of a cup, a box, a bowl, a special-shaped cylinder or a straight cylinder.

14. The paper container of claim 11, wherein: and the two sides of the bottom cover are both provided with a film coating layer.

15. The paper container of claim 11, wherein: the substrate further comprises a first bead cut edge and a second bead cut edge which are positioned on two sides of the lap cut edge.

16. The paper container of claim 15, wherein: the edge leakage prevention paper container blank further comprises an avoiding notch arranged at the intersection of the second edge rolling cutting edge and the lap edge cutting edge, the bottom cover comprises a cover body and a rolling edge arranged on the periphery of the cover body, and the rolling edge is in crimping connection with the avoiding notch.