Environmentally friendly single facer corrugated paperboard and method of producing the same

Abstract

The application discloses an environment-friendly single-face corrugated paperboard, which comprises fixedly connected face paper and corrugated core paper, the corrugated core paper has a plurality of alternately distributed raised portions and recessed portions, the recessed portions are fixedly connected with the face paper, a plurality of through holes are formed in the face paper, a plurality of length-directional uniformly distributed incisions are formed in part of the raised portions, the part of the raised portions between two adjacent incisions is bent to form an extension portion in the direction of the face paper, and the extension portion corresponds to the through hole. The environment-friendly single-face corrugated paperboard and the production method thereof can reduce the use amount of adhesive between the face paper and the corrugated core paper, realize the effect of environmental protection, and meanwhile, the extension portion and the face paper can be limited mutually, the connecting strength between the face paper and the corrugated core paper is ensured, and then the structural strength of the whole corrugated paper is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corrugated paper, in particular to an environment-friendly single-face corrugated paperboard and a production method thereof. BACKGROUND

[0002] Corrugated paper is a commonly used packaging material, which is a plate-shaped object formed by bonding face paper and corrugated core paper processed by corrugated rollers, and is generally divided into single corrugated paperboard and double corrugated paperboard. In the corrugated paper, the face paper and the corrugated core paper are mainly bonded and fixed by an adhesive, and a large amount of adhesive needs to be used, and the environmental protection performance is poor. However, simply reducing the amount of adhesive used will cause the strength of the corrugated paper itself to be insufficient, SUMMARY

[0003] In order to solve the problems in the prior art, the present application provides an environment-friendly single-face corrugated paperboard and a production method thereof, which can reduce the amount of adhesive used between the face paper and the corrugated core paper, achieve the effect of environmental protection, and at the same time, the extension and the face paper can be limited to each other, so as to ensure the connection strength between the face paper and the corrugated core paper, and further ensure the structural strength of the corrugated paper as a whole.

[0004] In order to achieve the above-mentioned purpose, the specific scheme adopted by the present application is as follows:

[0005] The environment-friendly single-face corrugated paperboard comprises fixedly connected face paper and corrugated core paper, the corrugated core paper has a plurality of alternating protruding portions and recessed portions, the recessed portions are fixedly connected with the face paper, a plurality of through holes are formed in the face paper, a plurality of cutouts are formed in part of the protruding portions and are uniformly distributed along the length direction, a portion of the protruding portion between two adjacent cutouts is bent in the direction of the face paper to form an extension, and the extension corresponds to the through hole.

[0006] Preferably, the extension and the face paper form an accommodation space, and a supporting strip for supporting the extension is arranged in the accommodation space.

[0007] Preferably, the supporting strip is formed by bending a cut-off portion generated when the through hole is cut in the face paper.

[0008] Preferably, each cut-off portion is cut and bent into two supporting strips, and the two supporting strips are respectively located between the two ends of the extension and the face paper.

[0009] Preferably, the cross section of the supporting strip is U-shaped, and the opening of the U-shaped is directed to the face paper.

[0010] Preferably, the cross section of the supporting strip is V-shaped, and the tip of the V-shaped is directed to the face paper.

[0011] Preferably, the thickness of the face paper is greater than the thickness of the corrugated core paper.

[0012] Preferably, there are at least three said protruding parts without said cut between two adjacent said protruding parts with said cut.

[0013] An environment-friendly single-sided corrugated paperboard production method, comprising the following steps:

[0014] S1: processing said face paper and said corrugated core paper respectively;

[0015] S2: passing said extension through said through hole;

[0016] S3: bonding and fixing said recess with said face paper.

[0017] Preferably, the method further comprises the following steps:

[0018] S4: supporting said extension by placing said supporting strip into said accommodating space.

[0019] The present application can reduce the amount of adhesive used between the face paper and the corrugated core paper, achieve the effect of environmental protection, and at the same time, the extension and the face paper can limit each other, ensuring the connection strength between the face paper and the corrugated core paper, and further ensuring the overall structural strength of the corrugated paper. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0021] Figure 1 is a schematic diagram of the overall structure of corrugated paper;

[0022] Figure 2 is Figure 1 is an enlarged view of part A in FIG.

[0023] Figure 3 is a schematic diagram of a second supporting strip structure;

[0024] Figure 4 is a schematic diagram of the structure of corrugated core paper.

[0025] Reference signs: 1-face paper, 2-corrugated core paper, 3-protruding part, 4-recess, 5-through hole, 6-extension, 7-supporting strip, 8-accommodating space, 9-cut. DETAILED DESCRIPTION

[0026] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0027] Please refer to Figures 1 to 4 , Figure 1 is a schematic diagram of the overall structure of corrugated paper, Figure 2 is Figure 1 is an enlarged view of part A in figure 1 and a schematic diagram of a first support strip structure, Figure 3 is a schematic diagram of a second support strip structure, Figure 4 is a schematic diagram of the structure of corrugated core paper.

[0028] The environment-friendly single-sided corrugated paperboard comprises fixedly connected face paper 1 and corrugated core paper 2, the corrugated core paper 2 has a plurality of alternating distribution protruding parts 3 and recessed parts 4, and the recessed parts 4 are fixedly connected with the face paper 1, a plurality of through holes 5 are formed on the face paper 1, a plurality of cutouts 9 are formed on part of the protruding parts 3 and are uniformly distributed along the length direction, part of the protruding parts 3 between two adjacent cutouts 9 is bent in the direction of the face paper 1 to form an extension 6, and the extension 6 corresponds to the through hole 5.

[0029] The single-sided corrugated paper of the present application improves the corrugated core paper 2, processes the extension 6 on the protruding part 3 far from the face paper 1 in the corrugated core paper 2, and the extension 6 passes through the through hole 5 on the face paper 1, so that the extension 6 and the face paper 1 can be limited mutually to strengthen the connection strength between the face paper 1 and the corrugated core paper 2, in addition, the extension 6 and the face paper 1 do not need to be fixed by adhesive bonding, only the recessed part 4 is bonded with the face paper 1, so as to reduce the use of adhesive and realize the effect of environmental protection.

[0030] The present application can reduce the amount of adhesive used between the face paper 1 and the corrugated core paper 2, realize the effect of environmental protection, and the extension 6 and the face paper 1 can be limited mutually to ensure the connection strength between the face paper 1 and the corrugated core paper 2, and further ensure the overall structural strength of the corrugated paper.

[0031] In order to further strengthen the mutual limiting effect of the extension 6 and the face paper 1, avoid the extension 6 passing through the through hole 5 in the opposite direction in the use process, causing the extension 6 and the face paper 1 to separate, and further causing the mutual limiting effect of the extension 6 and the face paper 1 to be lost, an accommodation space 8 is formed between the extension 6 and the face paper 1, and a support strip 7 for supporting the extension 6 is arranged in the accommodation space 8. The support strip 7 can clamp the extension 6 to prevent the extension 6 from separating from the face paper 1.

[0032] In order to further enhance the environmental protection effect, the support strip 7 is formed by bending the cut-off part produced when the face paper 1 is cut to form the through hole 5. The cut-off part produced when the through hole 5 is cut is used to make the support strip 7, so that the cut-off part that is originally waste material can be reused without using new raw materials, thereby achieving the effect of environmental protection.

[0033] Because the support strip 7 needs to be arranged between the two ends of the extension part 6 and the face paper 1, and the support strip 7 is made of the cut-off part, but the length of the cut-off part is the same as that of the through hole 5, so that when the cut-off part is directly made into a support strip 7, it cannot be located between the two ends of the extension part 6 and the face paper 1 at the same time, therefore, each cut-off part is cut and bent into two support strips 7, and the two support strips 7 are located between the two ends of the extension part 6 and the face paper 1, respectively. In order to ensure the stability of the position of the support strip 7, the extension part 6 can be slightly extruded to produce a certain degree of deformation, so as to clamp the support strip 7 on the face paper 1, and ensure the stability of the position of the support strip 7.

[0034] Considering that the corrugated paper needs to bear the pressure in the normal direction of the surface when in use, in order to improve the carrying capacity, the support strip 7 can be made into a suitable shape, in the present application, two forms are provided, the first support strip 7 has a U-shaped cross section, and the opening of the U shape faces the face paper 1, and the second support strip 7 has a V-shaped cross section, and the tip of the V shape faces the face paper 1. The shapes of the two support strips 7 can play a role similar to that of the corrugated core paper 2, thereby improving the carrying capacity of the corrugated paper.

[0035] Further, the thickness of the face paper 1 is greater than the thickness of the corrugated core paper 2.

[0036] Although the mutual positioning of the extension part 6 and the face paper 1 can ensure the strength of the corrugated paper, the strength is still insufficient compared with the way of bonding the face paper 1 and the corrugated core paper 2 by using an adhesive, therefore, the number of the extension part 6 cannot be too much, and for this reason, there are at least three protruding parts 3 without the cut 9 between the two adjacent protruding parts 3 with the cut 9. The distribution distance of the two adjacent extension parts 6 can be selected according to the actual size requirement of the corrugated paper.

[0037] In one specific embodiment of the present application, the environment-friendly single-sided corrugated paperboard comprises fixedly connected face paper 1 and corrugated core paper 2, the corrugated core paper 2 has a plurality of alternating protrusions 3 and depressions 4, the depressions 4 are fixedly connected with the face paper 1, a plurality of through holes 5 are formed on the face paper 1, a plurality of lengthwise uniformly distributed incisions 9 are formed on part of the protrusions 3, part of the protrusions 3 between two adjacent incisions 9 is bent in the direction of the face paper 1 to form an extension 6, the extension 6 corresponds to the through hole 5, an accommodation space 8 is formed between the extension 6 and the face paper 1, a support strip 7 for supporting the extension 6 is arranged in the accommodation space 8, the support strip 7 can clamp the extension 6 to prevent the extension 6 from separating from the face paper 1, the support strip 7 is formed by bending the cutting part when the through hole 5 is cut in the face paper 1, the cutting part when the through hole 5 is cut is used to make the support strip 7, which can reuse the cutting part as waste without using new raw materials, thereby achieving the effect of environmental protection, each cutting part is cut and bent into two support strips 7, the two support strips 7 are respectively arranged between the two ends of the extension 6 and the face paper 1, in order to ensure the stability of the position of the support strip 7, the extension 6 can be slightly extruded to deform to a certain extent, and then the support strip 7 is clamped on the face paper 1 to ensure the stability of the position of the support strip 7, the support strip 7 can be made into a suitable shape, in this embodiment, the cross section of the support strip 7 is U-shaped, and the opening of the U-shaped is directed to the face paper 1, the shape of the support strip 7 can play a similar role to the corrugated core paper 2, thereby improving the carrying capacity of the corrugated paper, the thickness of the face paper 1 is greater than the thickness of the corrugated core paper 2, and the number of the extensions 6 cannot be too large, therefore, there are at least three protrusions 3 without incisions 9 between two adjacent protrusions 3 with incisions 9, and the distribution distance of the two adjacent extensions 6 can be selected according to the actual size requirement of the corrugated paper.

[0038] The present application further provides a production method for producing the above-mentioned environment-friendly single-sided corrugated paperboard, comprising the following steps:

[0039] S1: respectively processing the face paper 1 and the corrugated core paper 2;

[0040] S2: making the extension 6 correspond to the through hole 5;

[0041] S3: bonding and fixing the depression 4 with the face paper 1;

[0042] S4: placing the support strip 7 into the accommodation space 8 to support the extension 6.

[0043] The processing methods of the face paper 1, the corrugated core paper 2 and the support strip 7 are all prior art in the field, and will not be described here.

[0044] The various embodiments described in this specification are intended to be illustrative only and in no way limit the scope of the application. Changes and modifications can be made by those skilled in the art, which employ the principles of the application, without departing from the scope of the application. Accordingly, the application is not limited to the embodiments described herein, but instead has scope to encompass any choice whatsoever that is dependent on, or can be substituted in, the principal, new and inventive features that are described and defined by the appended claims.

[0045] The above description of disclosed embodiments is intended to be illustrative only and not limiting of the application. Numerous modifications to these embodiments can be made by those skilled in the art without departing from the spirit or scope of the application. The scope of the application is not limited to the embodiments described herein, but instead is intended to encompass any and all changes and modifications that are within the scope of the claims.

Claims

1. An environmentally friendly single-faced corrugated cardboard, comprising a face paper (1) and a corrugated core paper (2) fixedly connected, wherein the corrugated core paper (2) has a plurality of alternating raised portions (3) and recessed portions (4), and the recessed portions (4) are fixedly connected to the face paper (1), characterized in that: The face paper (1) has multiple through holes (5), and a portion of the raised portion (3) has multiple evenly distributed slits (9) along the length direction. The portion of the raised portion (3) located between two adjacent slits (9) is bent toward the face paper (1) to form an extension portion (6), and the extension portion (6) passes through the through holes (5). An accommodating space (8) is formed between the extension (6) and the face paper (1), and a support strip (7) for supporting the extension (6) is provided in the accommodating space (8). The support strip (7) is formed by bending the cut-out portion produced when the through hole (5) is cut out of the face paper (1); Between two adjacent raised portions (3) with said cuts (9), there are at least three raised portions (3) without said cuts (9).

2. The environmentally friendly single-faced corrugated cardboard as described in claim 1, characterized in that: Each of the cut portions is cut and bent into two support strips (7), the two support strips (7) being located at both ends of the extension (6) and between the face paper (1).

3. The environmentally friendly single-faced corrugated cardboard as described in claim 1, characterized in that: The cross-section of the support strip (7) is U-shaped, and the opening of the U-shape faces the face paper (1).

4. The environmentally friendly single-faced corrugated cardboard as described in claim 1, characterized in that: The cross-section of the support strip (7) is V-shaped, and the tip of the V-shape faces the face paper (1).

5. The environmentally friendly single-faced corrugated cardboard as described in claim 1, characterized in that: The thickness of the face paper (1) is greater than the thickness of the corrugated core paper (2).

6. A method for producing environmentally friendly single-faced corrugated cardboard as described in claim 1, characterized in that, Includes the following steps: S1: Process the face paper (1) and the corrugated core paper (2) respectively. S2: Pass the extension (6) through the through hole (5) accordingly; S3: Adhere and fix the recessed portion (4) to the face paper (1).

7. The production method as described in claim 6, characterized in that: It also includes the following steps: S4: The support bar (7) is placed into the receiving space (8) to support the extension (6).

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