A method of making a carton packaging material

Abstract

A kind of preparation method of carton packaging material, its carton packaging material includes first corrugated board, second corrugated board, a layer of water-hardening coating is clamped between first corrugated board, second corrugated board, the two ends of first corrugated board, second corrugated board are respectively fixed by being bonded with inner layer paper, outer layer paper, outer layer paper is sprayed with water color-changing ink on the end face away from the one end of first corrugated board, water color-changing ink changes color when water is encountered;Outer layer paper, inner layer paper are sprayed with waterproof layer;Including the following steps: S1, respectively manufacture inner layer paper and outer layer paper, first corrugated board, second corrugated board;S2, water-hardening coating is sprayed on the surface of first corrugated board, second corruggated board and each other contact;S4, indicate pattern is sprayed with water color-changing ink on outer layer paper;S5, a layer of paraffin is respectively daubed on the outside of inner layer paper and outer layer paper by gluing machine;S7, inner layer paper and outer layer paper are bonded on first corrugated board, second corrugated board by adhesive to form corrugated board.

Description

TECHNICAL FIELD

[0001] The present application relates to paperboard manufacturing technology for carton, in particular to a preparation method of carton packaging material. BACKGROUND

[0002] With the explosive growth of express industry, cartons, especially corrugated cartons, have become one of the most commonly used express packaging boxes. The corrugated paperboard used in the current corrugated carton is generally three layers, one layer of corrugated board in the middle, one layer of paper on each end, and if waterproofing is required, waterproof paint needs to be sprayed on the end of the paper away from the corrugated board. The corrugated carton manufactured in this way can meet most of the needs, but the liquid express industry is becoming more and more common, and once the corrugated board is waterlogged, it will seriously affect its strength, thereby reducing the strength of the carton, and the carton may collapse directly during warehousing and transportation, thereby failing to protect the goods inside. Moreover, during transportation, the operator's operation may cause the water in the goods inside to leak, and since the corrugated carton is not designed to be visible, it is difficult to determine whether it is leaking as long as the carton does not collapse in each process, which causes the problem of being unable to trace back for subsequent disputes.

[0003] Therefore, the present application designs a preparation method of carton packaging material, which can display the waterlogging mark in time after waterlogging, and the corrugated board can harden when waterlogged to effectively support the carton. SUMMARY

[0004] In view of the above defects of the prior art, the technical problem to be solved by the present application is to provide a preparation method of carton packaging material.

[0005] To achieve the above-mentioned purpose, the present application provides

[0006] The preparation method of carton packaging material comprises the following steps:

[0007] S1, respectively manufacturing inner and outer layers of paper, first and second corrugated boards;

[0008] S2, spraying water-hardening paint on the surfaces of the first and second corrugated boards in contact with each other, the water-hardening paint being composed of the following weight ratio of materials: 70-75 of water-hardening alumina, 15-20 of dibutyl phosphate, 3-4 of polyethylene glycol, and 2-3 of water-absorbing resin. When used, the water-hardening alumina, polyethylene glycol and water-absorbing resin are ground to 80 mesh or more, then the dibutyl phosphate is added and stirred uniformly, and if necessary, ethyl ether can be added to adjust the viscosity to meet the spraying standard;

[0009] The spraying process is as follows: the first corrugated board and the second corrugated board are heated to 60-80 DEG C, and then the water-hardening coating material is sprayed onto the first corrugated board and the second corrugated board through a spraying machine to form a coating layer with a thickness of 0.2-0.4 mm.

[0010] S3, a layer of water-absorbing viscose fiber is clamped between the first corrugated board and the second corrugated board, and then the first corrugated board, the second corrugated board and the water-absorbing viscose fiber are glued and pressed into one body. This design is mainly to enable the water-absorbing viscose fiber to quickly transfer water to the water-hardening coating layer after water is poured, so that the water-hardening coating material is hardened quickly.

[0011] S4, an indicating pattern is sprayed on the outer layer paper with water color-changing ink, and the pattern will change color once water is poured, thereby timely reminding the operator that the carton is waterlogged;

[0012] S5, a layer of paraffin is applied on the outer side of the inner layer paper and the outer layer paper by a gluing machine, specifically, the inner layer paper and the outer layer paper are heated to 50 DEG C, and then the paraffin is heated to 60 DEG C to melt into a liquid state, and then the paraffin is coated on the inner layer paper and the outer layer paper by the gluing machine to form a paraffin coating layer with a thickness of 0.4-0.6 mm;

[0013] S6, the water-absorbing viscose fiber is pressed into a layer of water-absorbing viscose fiber layer by rolling; a layer of viscose is brushed on the end face of the inner layer paper and the outer layer paper which is not applied with paraffin, and then the layer of water-absorbing viscose fiber is bonded to the end face of the inner layer paper and the outer layer paper; the thickness of the layer of water-absorbing viscose fiber is not greater than 0.3 mm.

[0014] S7, a layer of viscose is brushed on the layer of water-absorbing viscose fiber, and then the inner layer paper and the outer layer are respectively placed on the outer side of the first corrugated board and the second corrugated board, so as to be glued to the first corrugated board and the second corrugated board to form a corrugated paperboard, that is, the carton packaging material proposed in the application.

[0015] The beneficial effects of the application are:

[0016] The application can greatly increase the water resistance of the inner paper layer and the outer paper layer by paraffin treatment on the outer part of the inner paper layer and the outer paper layer, and the water color-changing ink sprayed on the outer paper layer can very obviously remind the operator when the carton is waterlogged, so as to find the water leakage problem in time, thereby reducing the loss and facilitating subsequent accountability. In addition, the application adopts two layers of corrugated boards with the water-hardening coating material clamped in the middle, so that the carton will quickly harden even if water is poured, thereby preventing the sudden reduction of the strength and the collapse. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of a corrugated paperboard. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described in the description of the present application with reference to the accompanying drawings in the embodiments of the present application.

[0019] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0020] Embodiment one

[0021] Referring to Figure 1 The carton packaging material of the present embodiment is corrugated paperboard, which comprises a first corrugated board 110 and a second corrugated board 120, and a layer of water-hardening paint 240 is clamped between the first corrugated board 110 and the second corrugated board 120. The two ends of the first corrugated board 110 and the second corrugated board 120 are respectively bonded and fixed with the inner layer paper 140 and the outer layer paper 130 by adhesive. The outer layer paper 130 has water color-changing ink 220 sprayed on the end face away from the first corrugated board 110, and the water color-changing ink changes color when it comes into contact with water.

[0022] The outer layer paper 130 is also sprayed with a first waterproof layer 231 outside the water color-changing ink 220, and the end face of the inner layer paper 140 away from the first corrugated board 110 is sprayed with a second waterproof layer 232. The first waterproof layer 231 and the second waterproof layer 232 are used to prevent water from penetrating through the outer layer paper 130 and / or the inner layer paper 140. The end face of the inner layer paper 140 and the outer layer paper 130 facing the first corrugated board 110 is also fixed with a layer of water-absorbing viscose fiber 210, respectively. The water-absorbing viscose fiber 210 has strong water-absorbing property.

[0023] In use, water is generally difficult to pass through the first waterproof layer 231, the second waterproof layer 232, and once it does, it is quickly absorbed by the water-absorbent viscose fiber 210 to avoid direct transmission to the first corrugated board 110, the second corrugated board 120, thereby avoiding the influence of a small amount of water seepage on the overall strength. Once the water-absorbent viscose fiber 210 absorbs too much water, it will transmit the water to the inner layer paper 140 and the outer layer paper 130, the first corrugated board 110, and the second corrugated board 120, so that the first corrugated board 110 and the second corrugated board 120 guide the water to the water-hardening paint 240 on the inner side, which hardens after being exposed to water to supplement the strength of the first corrugated board 110 and the second corrugated board 120, preventing the carton from collapsing; at the same time, the water-absorbent viscose fiber 210 firmly bonds the inner layer paper 140 and the outer layer paper 130 to the first corrugated board 110 and the second corrugated board 120 after absorbing water to increase the strength. The outer layer paper 130 transmits water to the water-color-changing ink 220, which changes color, so that the water seepage or water ingress of the carton can be visually observed in time for timely loss prevention treatment. The first waterproof layer 231 in this embodiment is in a transparent state.

[0024] Embodiment Two

[0025] A method for preparing a carton packaging material, comprising the following steps:

[0026] S1, respectively manufacturing an inner layer paper and an outer layer paper, a first corrugated board, and a second corrugated board;

[0027] S2, spraying water-hardening paint on the surfaces of the first corrugated board and the second corrugated board in contact with each other, the water-hardening paint being composed of the following materials in weight ratio: 71 parts of hydraulic alumina, 17 parts of dibutyl phosphate, 3 parts of polyethylene glycol, and 3 parts of water-absorbent resin. In use, the hydraulic alumina, the polyethylene glycol, and the water-absorbent resin are ground to 100 mesh or more, then the dibutyl phosphate is added and stirred uniformly, and if necessary, ethyl ether can be added to adjust the viscosity to meet the spraying standard;

[0028] The spraying process is as follows: heating the first corrugated board and the second corrugated board to 70℃, then spraying the water-hardening paint material onto the first corrugated board and the second corrugated board through a spraying machine to form a coating with a thickness of 0.3mm.

[0029] S3, sandwiching a layer of water-absorbent viscose fiber between the first corrugated board and the second corrugated board, and then gluing and pressing the first corrugated board, the second corrugated board, and the water-absorbent viscose fiber into one body.

[0030] S4, spraying an indicating pattern on the outer layer paper with water-color-changing ink, which will change color once the pattern is exposed to water, thereby timely reminding the carton of water ingress;

[0031] S5, respectively, on the outer side of the inner layer paper and the outer layer paper by the glue machine to smear a layer of paraffin wax, specifically, the inner layer paper and the outer layer paper are heated to 50℃, and then the paraffin wax is heated to 60℃ to melt into a liquid state, and then the paraffin wax is coated on the inner layer paper and the outer layer paper by using the glue machine to form a paraffin wax coating with a thickness of 0.4-0.6mm.

[0032] S6, the water-absorbing viscose fiber is pressed into a layer of water-absorbing viscose fiber layer by rolling; a layer of viscose is brushed on the end face of the inner layer paper and the outer layer paper which is not smeared with paraffin wax, and then the water-absorbing viscose fiber layer is adhered to the end face of the inner layer paper and the outer layer paper; the thickness of the water-absorbing viscose fiber layer is not more than 0.3mm.

[0033] S7, a layer of viscose is brushed on the water-absorbing viscose fiber layer, and then the inner layer paper and the outer layer are respectively placed on the outer side of the first corrugated board and the second corrugated board, so as to be glued on the first corrugated board and the second corrugated board to form a corrugated board.

[0034] Example three

[0035] The preparation method of the paper box packaging material comprises the following steps:

[0036] S1, the inner layer paper and the outer layer paper, the first corrugated board and the second corrugated board are respectively manufactured;

[0037] S2, water-hardening paint is sprayed on the surface of the first corrugated board and the second corrugated board which contact with each other, and the water-hardening paint is composed of the following materials in weight ratio: 74 of water-hardening alumina, 20 of dibutyl phosphate, 3.5 of polyethylene glycol, and 2 of water-absorbing resin; when used, the water-hardening alumina, the polyethylene glycol and the water-absorbing resin are ground to 90 mesh or more, then the dibutyl phosphate is added and stirred uniformly; if necessary, ethyl ether can be added to adjust the viscosity to meet the spraying standard;

[0038] The spraying process is as follows: the first corrugated board and the second corrugated board are heated to 70℃, and then the water-hardening paint material is sprayed out to the first corrugated board and the second corrugated board by the spraying machine to form a coating with a thickness of 0.3mm.

[0039] S3, a layer of water-absorbing viscose fiber is clamped between the first corrugated board and the second corrugated board, and then the first corrugated board, the second corrugated board and the water-absorbing viscose fiber are glued and pressed into one.

[0040] S4, a indicating pattern is sprayed on the outer layer paper with water color changing ink, and the pattern will change color once it meets water in the later stage, so as to timely remind the paper box of water;

[0041] S5, respectively, on the outer side of the inner layer paper and the outer layer paper by the glue machine to smear a layer of paraffin wax, specifically, the inner layer paper and the outer layer paper are heated to 50℃, and then the paraffin wax is heated to 60℃ to melt into a liquid state, and then the paraffin wax is coated on the inner layer paper and the outer layer paper by using the glue machine to form a paraffin wax coating with a thickness of 0.4-0.6mm.

[0042] S6, the water-absorbing viscose fiber is pressed into a layer of water-absorbing viscose fiber layer by rolling; a layer of viscose is brushed on the end face of the inner layer paper and the outer layer paper which is not smeared with paraffin wax, and then the water-absorbing viscose fiber layer is adhered to the end face of the inner layer paper and the outer layer paper; the thickness of the water-absorbing viscose fiber layer is not more than 0.3mm.

[0043] S7, a layer of viscose is brushed on the water-absorbing viscose fiber layer, and then the inner layer paper and the outer layer are respectively placed on the outer side of the first corrugated board and the second corrugated board, so as to be glued on the first corrugated board and the second corrugated board to form a corrugated board.

[0044] Example four

[0045] The preparation method of the paper box packaging material comprises the following steps:

[0046] S1, the inner layer paper and the outer layer paper, the first corrugated board and the second corrugated board are respectively manufactured;

[0047] S2, water-hardening paint is sprayed on the surface of the first corrugated board and the second corrugated board which contact with each other, and the water-hardening paint is composed of the following materials in weight ratio: 72 of water-hardening alumina, 18 of dibutyl phosphate, 4 of polyethylene glycol, and 2.5 of water-absorbing resin; when used, the water-hardening alumina, the polyethylene glycol and the water-absorbing resin are ground to 120 mesh or more, then the dibutyl phosphate is added and stirred uniformly; if necessary, ethyl ether can be added to adjust the viscosity to meet the spraying standard;

[0048] The spraying process is as follows: the first corrugated board and the second corrugated board are heated to 70℃, and then the water-hardening paint material is sprayed out to the first corrugated board and the second corrugated board by the spraying machine to form a coating with a thickness of 0.4mm.

[0049] S3, a layer of water-absorbing viscose fiber is sandwiched between the first corrugated board and the second corrugated board, and then the first corrugated board, the second corrugated board and the water-absorbing viscose fiber are glued and pressed into one.

[0050] S4, a indicating pattern is sprayed on the outer layer paper with water color changing ink, and the pattern will change color once it meets water in the later stage, so as to timely remind the paper box of water;

[0051] S5, respectively on the outer side of the inner layer paper and the outer layer paper by a glue machine to smear a layer of paraffin wax, specifically, the inner layer paper and the outer layer paper are heated to 50 DEG C, and then the paraffin wax is heated to 60 DEG C to melt into a liquid state, and then the paraffin wax is coated on the inner layer paper and the outer layer paper by using the glue machine, forming a paraffin wax coating with a thickness of 0.4-0.6 mm.

[0052] S6, the water-absorbing viscose fiber is pressed into a layer of water-absorbing viscose fiber layer by rolling; a layer of viscose is brushed on the end face of the inner layer paper and the outer layer paper which is not smeared with paraffin wax, and then the water-absorbing viscose fiber layer is adhered to the end face of the inner layer paper and the outer layer paper; the thickness of the water-absorbing viscose fiber layer is not more than 0.3 mm.

[0053] S7, a layer of viscose is brushed on the water-absorbing viscose fiber layer, and then the inner layer paper and the outer layer are respectively placed on the outer side of the first corrugated board and the second corrugated board, so as to be glued on the first corrugated board and the second corrugated board by the viscose, thereby forming a corrugated paperboard.

[0054] The details of the application are not described, which are known to those skilled in the art.

[0055] The above describes the preferred embodiments of the application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the application should be within the protection scope determined by the claims.

Claims

1. A method of making a carton packaging material, characterized by, The carton packaging material comprises a first corrugated board and a second corrugated board, a layer of water-hardening paint is arranged between the first corrugated board and the second corrugated board, the two ends of the first corrugated board and the second corrugated board are respectively bonded and fixed with inner paper and outer paper through adhesive, the end face of the outer paper away from the first corrugated board is sprayed with water color-changing ink, and the water color-changing ink changes color when coming into contact with water; the outer paper outside the water color-changing ink is further sprayed with a first waterproof layer, and the end face of the inner paper away from the first corruggated board is sprayed with a second waterproof layer; The method comprises the following steps: S1, manufacturing the inner paper and the outer paper, the first corrugated board and the second corrugated board respectively; S2, spraying water-hardening paint on the surfaces of the first corrugated board and the second corrugated board in contact with each other; S4, spraying an indicating pattern on the outer paper with water color-changing ink; S5, applying a layer of paraffin on the outer sides of the inner paper and the outer paper through a glue spreading machine; S7, bonding the inner paper and the outer paper on the first corrugated board and the second corrugated board through adhesive to form a corrugated board; The water-hardening paint is composed of the following materials in the weight ratio: 70-75 of water-hardening aluminum oxide, 15-20 of dibutyl phosphate, 3-4 of polyethylene glycol and 2-3 of water-absorbing resin; when used, the water-hardening aluminum oxide, the polyethylene glycol and the water-absorbing resin are ground to 80 mesh or more, then the dibutyl phosphate is added and stirred uniformly. The water-hardening paint spraying process is as follows: the first corrugated board and the second corrugated board are heated to 60-80℃, then the water-hardening paint material is sprayed onto the first corrugated board and the second corrugated board through a spraying machine to form a coating with a thickness of 0.2-0.4mm. The steps between S2 and S4 further comprise the following steps: S3, a layer of water-absorbing viscose fiber is arranged between the first corrugated board and the second corrugated board, then the first corrugated board, the second corrugated board and the water-absorbing viscose fiber are bonded and compressed into one piece; In S5, the inner paper and the outer paper are heated to 50℃, then the paraffin is heated to 60℃ to melt into a liquid state, then the paraffin is coated on the inner paper and the outer paper using a glue spreading machine to form a paraffin coating with a thickness of 0.4-0.6mm.

2. The production method according to claim 1, wherein The steps between S5 and S7 further comprise the following steps: S6, the water-absorbing viscose fiber is compressed into a layer of water-absorbing viscose fiber layer through rolling, then a layer of adhesive is brushed on the end face of the inner paper and the outer paper which is not coated with paraffin, and then the layer of water-absorbing viscose fiber is bonded on the end face of the inner paper and the outer paper; A layer of adhesive is brushed on the layer of water-absorbing viscose fiber, then the inner paper and the outer paper are respectively placed on the outer sides of the first corrugated board and the second corrugated board, so as to be bonded on the first corrugated board and the second corrugated board through adhesive to form a corrugated board.

3. The production method according to claim 2, wherein The thickness of the layer of water-absorbing viscose fiber is not more than 0.3mm.

4. The production method according to claim 1, wherein The water-hardening paint is composed of the following materials in the weight ratio: 71 of water-hardening aluminum oxide, 17 of dibutyl phosphate, 3 of polyethylene glycol and 3 of water-absorbing resin; when used, the water-hardening aluminum oxide, the polyethylene glycol and the water-absorbing resin are ground to 100 mesh or more, then the dibutyl phosphate is added and stirred uniformly.

5. The production method according to claim 1, wherein The water-hardening coating is made of the following materials in parts by weight: water-hardening alumina 74, dibutyl phosphate 20, polyethylene glycol 3.5, water-absorbing resin 2. In use, the water-hardening alumina, polyethylene glycol and water-absorbing resin are ground to 90 mesh or finer, then the dibutyl phosphate is added and stirred to uniformity.

6. The production method according to claim 1, wherein The water-hardening coating is made of the following materials in parts by weight: water-hardening alumina 72, dibutyl phosphate 18, polyethylene glycol 4, water-absorbing resin 2.

5. In use, the water-hardening alumina, polyethylene glycol and water-absorbing resin are ground to 120 mesh or finer, then the dibutyl phosphate is added and stirred to uniformity.

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