WO2015089907A1

WO2015089907A1 - Paper plastic packaging box manufacturing method and paper plastic packaging box

Info

Publication number: WO2015089907A1
Application number: PCT/CN2014/001117
Authority: WO
Inventors: 李鑫
Original assignee: 青岛德音包装有限公司
Priority date: 2013-12-16
Filing date: 2014-12-12
Publication date: 2015-06-25
Also published as: CN103612417B; CN103612417A

Abstract

A paper plastic packaging box manufacturing method and paper plastic packaging box, the paper plastic packaging box manufacturing method comprising the following steps: unwinding a roll of thin film, rolling up the thin film after being printed with a pattern; rolling up after the thin film printed with the pattern is composited with a surface paper; a corrugated paper molding process, a process of compositing the composite surface paper, the corrugated paper and inner paper; a cut-off process and cutting, creasing, binding and molding processes. The paper plastic packaging box manufacturing method simplifies the process flow, improves working efficiency, and reduces production costs. The rollers rolling over the corrugated paper, the composite surface paper and the inside paper are heated to increase the bonding between the corrugated paper and the composite surface paper and the inside paper. The gap between second press rollers is set to be the sum of the thickness of the composite surface paper, the corrugated paper and the inside paper, so that the second press rollers does not apply pressing force to the composite paper board, but only draws and composites, so as to avoid flattening the corrugated paper being composited and avoid reducing the strength of the composite paper board.

Description

Method for manufacturing paper plastic packaging box and paper plastic packaging box

Technical field

The invention belongs to the technical field of packaging boxes, and particularly relates to a paper plastic packaging box manufacturing method and a paper plastic packaging box manufactured by the method.

Background technique

At present, carton packaging is widely used, and most of the goods are packed in cartons. In order to attract customers and at the same time function as a product to be transmitted, a beautiful product should be printed on the carton. For waterproofing, abrasion resistance and visual effects after printing, a film is applied on the outer surface of the carton to become paper. Plastic crates.

At present, the manufacturing method of the paper-plastic packaging box is: first cutting the process, cutting the facial paper into the size required for the paper-plastic packaging box; after the offset printing process, using the offset printing machine to offset the pattern on the outer surface of each facial tissue; In the process, the film is adhered to the outer surface of the face paper and cut; after the compounding process, the paper with the film composited is bonded to the paper paper and the inner paper by cold glue, and is pressed by a press roll to form a paper-plastic package. The box board; the drying process, waiting for the cold glue to dry, the final forming process, the paper-plastic packaging box board is cut and crimped by the film cutting machine, and then formed by binding and packaging.

Because the equipment of the offset printing machine is relatively expensive, the equipment is put into a large amount; at the same time, the width of the offset printing machine is narrow, and the continuous printing of the facial paper cannot be performed, and the single-sheet printing is required after cutting the facial paper, thereby wasting labor and low production efficiency; The face paper of the film is bonded with the cold paper of the paper paper and the inner paper by the pressure roller, so that the corrugated paper is flattened, so that the corrugated paper has a corrugated shape, so that the strength of the whole paper cardboard box is not high. In addition, in the production process, it has been cut off several times, and it needs to wait for the cold glue to dry, thus making the manufacturing process cumbersome, low in production efficiency and high in cost; in order to reduce the occupied space while waiting for drying, the paper-plastic packaging box board The piles are stacked, so that the lower layer of the paper-plastic packaging board is subjected to pressure, so that the corrugated paper is further deformed, and the strength of the paper-plastic packaging board is further reduced.

Summary of the invention

The invention aims to solve the problems of cumbersome manufacturing process, low production efficiency and high cost in the prior art, and provides a method for manufacturing a paper-plastic packaging box, which continuously carries out the winding in the production process, simplifies the manufacturing process and improves the work. effectiveness.

In order to achieve the above object, the present invention is achieved by the following technical solution; a method for manufacturing a paper-plastic packaging box, comprising the following steps:

Step A, unwinding the rolled film on the plastic printing device, and winding the film on the surface of the film;

Step B, unwinding the printed film on the composite device, unwinding the rolled paper on the composite device, applying the first adhesive on the patterned surface of the film, and passing the first press roller with the facial paper Compacting and rewinding to form a composite facial tissue;

Step C: unwinding the corrugated paper sheets on the corrugated paper forming equipment to form corrugated paper, unwinding the rolled composite paper on the composite equipment, and unwinding the inner paper on the composite equipment; on the inner surface of the corrugated paper and outside Applying a second adhesive on the surface, and compounding with the composite paper and the inner paper through the second pressure roller to form a composite paperboard;

Step D: After the composite paperboard is cut, a paper-plastic packaging box board is formed, and the paper-plastic packaging box board is cut into a paper-plastic packaging box through a slit, a pressing line, a binding, and a molding.

Further, in step A, a pattern is printed on the surface of the film using a stamping machine.

In order to increase the adhesion of the corrugated paper to the composite paper and the backing paper, the step C also includes a step of heating the rolls through which the corrugated paper passes in the composite apparatus, the rolls through which the composite paper passes, and the rolls through which the backing paper passes.

Further, the roller is heated by steam.

Further, the heating temperature is 120 ° C to 140 ° C.

In order to prevent the corrugated paper from being crushed during the second press roll recombination and to reduce the strength of the composite paperboard, the gap between the second press rolls is the sum of the composite face paper thickness, the corrugated paper thickness and the backing paper thickness.

In order to further shorten the drying time after corrugated paper and composite facial paper and backing paper, and to avoid the flattening of corrugated paper when drying and stacking, and to reduce the strength of the composite paperboard, after step C, there is step C1, and the composite paperboard passes through the drying temperature. It is a drying equipment of 120 ° C ~ 140 ° C.

Further, the drying temperature is 130 ° C to 140 ° C.

Further, the drying device is an iron plate heated by steam, and above the iron plate is a conveyor belt for conveying the composite paperboard, and the composite paperboard is located on a conveyor belt, and the length of the iron plate is 30-50 meters.

Preferably, the iron plate has a length of 36 meters.

In order to ensure the composite effect of the composite paperboard and avoid the drying deformation, before step C, there is a step C0, respectively detecting the water content of the composite facial paper, the moisture content of the corrugated paper sheet, and the water content of the inner paper, and adjusting the step C1 according to the detection result. Drying temperature.

Further, the first adhesive is an aqueous composite adhesive.

Further, the second adhesive is a starch glue.

Further, the film is a plastic film.

Further, the facial tissue is whiteboard paper.

Based on the above-described manufacturing method of the paper-plastic packaging box, the present invention also provides a paper-plastic packaging box which is manufactured by the above-described manufacturing method of the paper-plastic packaging box, so that the strength of the packaging box is increased.

A paper-plastic packaging box manufactured by the above-described method of manufacturing a paper-plastic packaging box.

The manufacturing method of the paper-plastic packaging box provided by the invention is smooth and continuous throughout the manufacturing process, and simplifies the process flow. Increased work efficiency and reduced production costs. The roller passing through the corrugated paper, the roller passing through the composite paper, and the roller passing through the inner paper are heated to increase the bonding strength between the corrugated paper and the composite paper and the inner paper. The gap between the second pressure roller is set to be the sum of the thickness of the composite paper, the corrugated paper and the inner paper, so that the second pressure roller has no pressing force on the composite paperboard, and only plays the role of traction composite, avoiding the corrugated paper during the composite It is crushed to reduce the strength of the composite board. By setting step C1,

The composite paperboard is subjected to a drying process with a drying temperature of 120 ° C to 140 ° C; the drying time of the corrugated paper and the composite paper and the inner paper is shortened, and the corrugated paper is pressed because the composite cardboard is not dried during the storage process. Flat, reduce the strength of the composite cardboard. By setting step C0, the water content of the composite facial paper, the corrugated paper sheet and the inner paper are respectively detected, and the drying temperature in the step C1 is adjusted according to the detection result to ensure the composite effect of the composite paperboard to avoid drying deformation.

Other features and advantages of the present invention will become apparent from the Detailed Description of the Drawing.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing an embodiment of a method of manufacturing a paper-plastic package according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

1 is a flow chart of an embodiment of a method for manufacturing a paper-plastic packaging box according to the present invention, and a method for manufacturing a paper-plastic packaging box according to the present invention, comprising the following steps;

Step A: unwinding the rolled film on the plastic printing device, and winding the film on the surface of the film, and winding the film on the plastic printing device, unwinding the printed pattern, and winding the film. Continuous printing on the film, so the printing speed is fast, the efficiency is high: after printing a roll of film, it needs to be re-rolled once, and no human assistance is needed in the middle, so manpower is saved, and the production cost is further reduced.

Step B, unwinding the printed film on the composite device, unwinding the rolled paper on the composite device, applying the first adhesive on the patterned surface of the film, and passing the first press roller with the facial paper Pressing the composite and winding to form a composite facial paper; the composite process is continuous, which can improve the speed of the composite and improve the production efficiency; and can adjust the tension of the film and the facial paper to ensure the composite effect and avoid the compounding. After the wrinkles and cracking phenomenon, the quality of the product is improved; in addition, in the process of laminating the film and the face paper, only the workload of the roll change, and other auxiliary work without human labor are saved, thereby saving manpower and further reducing the production cost.

Step C: Rolling the corrugated paper sheets on the corrugated paper forming equipment to form corrugated paper, winding the composite facial paper on the composite equipment, and winding the inner paper on the composite equipment; on the inner surface of the corrugated paper and outside Surface coating Two viscose, and composite paper and paper are combined with the second pressure roller to form composite paperboard; the composite process is continuous, which can improve the speed of compounding and improve the production efficiency; and can adjust the composite paper and corrugated The tension between the cardboard and the inner paper ensures the effect of the composite, avoids the wrinkles and cracking after the composite, and improves the quality of the product; in addition, in the composite process of the composite paper, the corrugated cardboard and the inner paper, only the roll change The workload, other auxiliary work that does not require manpower, saves manpower and further reduces production costs.

Step D, the composite paperboard is cut to form a paper-plastic packaging box board, and the paper-plastic packaging box board is cut into a paper-plastic packaging box through a slit, a pressing line, a binding, and a molding; thus, a cutting process is performed in the entire manufacturing process. Simplified process flow.

The manufacturing method of the paper-plastic packaging box of the invention is such that the whole manufacturing process is smooth and continuous, and after a cutting process, the process flow is simplified, the production speed is increased, the production efficiency is improved, and the production cost is lowered; It saves manpower and further reduces production costs; it also improves the quality of the product.

Wherein, in step A, a plastic printing machine is used to print a pattern on the surface of the film, and the plastic printing machine is cheaper than the offset printing machine, thereby reducing the investment of the device; and the working width is increased, so that a wider film can be printed, or At the same time, two rolls of film are molded.

In order to increase the adhesion of the corrugated paper to the composite paper and the backing paper, the step C also includes a step of heating the rolls through which the corrugated paper passes in the composite apparatus, the rolls through which the composite paper passes, and the rolls through which the backing paper passes. By heating the roller, the corrugated paper, the composite facial paper, and the inner paper passing through the roller have a certain temperature, and when combined with the corrugated paper, it is more advantageous to exert the action of the second adhesive, so that the bonding is firm.

The heating method of the roller is to introduce a hot gas or liquid into the stick, and the heating temperature is 120 ° C to 140 ° C. Preferably, steam is introduced into the stick.

Since the composite paper, the corrugated paper, and the backing paper are preheated before being combined, the second adhesive is also preheated, so that the second adhesive can be fully exerted without the pressing force between the second pressure rollers. Therefore, in order to prevent the corrugated paper from being crushed during the compounding in step C and reduce the strength of the composite paperboard, the gap between the second pressure rollers is set to be the sum of the thickness of the composite paper, the thickness of the corrugated paper and the thickness of the inner paper. The composite paperboard after the composite paper, corrugated paper and paper-bonding has no pressing force, only plays the role of traction composite, and the corrugated paper structure is intact, which improves the strength of the composite paperboard.

In order to further shorten the drying time after the composite of corrugated paper and composite facial paper and backing paper, and to prevent the corrugated paper from being flattened when the bag is dry and stored, and to reduce the strength of the composite paperboard, step C1 is further provided after step C, and the composite cardboard is baked. Drying equipment with a dry temperature of 120 ° C to 140 ° C; a preferred drying temperature of 130 ° C to 140 ° C. The composite paperboard is dried by the drying equipment, and the drying time is shortened: since the structure and shape of the corrugated paper, the composite facial paper, and the inner layer of the inner paper are not damaged after drying, the dried composite paperboard has good strength.

The drying equipment is an iron plate heated by steam, and the conveyor belt for conveying composite cardboard is placed above the iron plate, and the composite cardboard position On the conveyor belt; wherein the length of the iron plate is 30 to 50 meters, preferably the length of the iron plate is 35 meters. The composite paperboard on the conveyor belt is dried by the thermal conductivity of the iron plate.

Since the speed of the conveyor belt should be equal to the speed at which the composite paper is formed in step 3, the drying time is determined in the case where the length of the iron plate and the speed of the conveyor belt are constant.

In order to ensure the composite effect of the composite paperboard and avoid the drying deformation, before step C, there is a step C0, respectively detecting the water content of the composite facial paper, the moisture content of the corrugated paper sheet, and the water content of the inner paper, and adjusting the step C1 according to the detection result. Drying temperature. Through the adjustment of the drying temperature, the drying effect of the composite composite paperboard is ensured.

Wherein, in step B, the first adhesive is an aqueous composite glue. In the step C, the second adhesive is made of starch glue. The starch glue is a natural adhesive made of starch, which has the advantages of rapid drying, firm bonding, flat cardboard, anti-corrosion and mildew resistance.

In this embodiment, the film is made of PET film or BOPP film, and the face paper is whiteboard paper.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art may use the above-disclosed technical contents to change or modify the equivalent equivalent. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

A method of manufacturing a paper-plastic packaging box, comprising the steps of:

Step A, unwinding the rolled film on the plastic printing device, and winding the film on the surface of the film;

Step B, unwinding the printed film on the composite device, unwinding the rolled paper on the composite device, applying a first viscosity on the patterned surface of the film, and pressing the first paper with the facial paper Tightly compounding, winding to form a composite facial tissue;

Step C: Rolling the corrugated paper sheets on the corrugated paper forming equipment to form corrugated paper, winding the composite facial paper on the composite equipment, and winding the inner paper on the composite equipment; on the inner surface of the corrugated paper and outside The surface is coated with a second adhesive, and combined with the composite paper, the paper is composited by the second pressure roller to form a composite paperboard;

Step D: After the composite paperboard is cut, a paper-plastic packaging box board is formed, and the paper-plastic packaging box board is cut into a paper-plastic packaging box through a slit, a pressing line, a binding, and a molding.
The manufacturing method according to claim 1, further comprising the step of heating the roller through which the corrugated paper passes in the composite apparatus, the roller through which the composite paper passes, and the roller through which the inner paper passes.
The manufacturing method according to claim 2, wherein the temperature heated in the step C is from 120 ° C to 140 ° C.
The manufacturing method according to claim 2, wherein the gap between the second press rolls is a sum of a composite paper thickness, a corrugated paper thickness, and a back paper thickness.
The manufacturing method according to any one of claims 1 to 4, further comprising a step C1 after the step C, the composite paperboard being subjected to a drying apparatus having a drying temperature of 120 ° C to 140 ° C.
The manufacturing method according to claim 5, wherein the drying temperature is 130 ° C to 140 ° C.
The manufacturing method according to claim 5, wherein the drying device is an iron plate heated by steam, and above the iron plate is a conveyor belt for conveying the composite paperboard, and the composite cardboard is located on a conveyor belt. The length of the iron plate is 30-50 meters.
The manufacturing method according to claim 5, further comprising the step C0 before the step C, respectively detecting the water content of the composite paper, the water content of the corrugated board, and the water content of the inner paper, and adjusting the step C1 according to the detection result. The drying temperature in the middle.
The manufacturing method according to any one of claims 1 to 4, wherein the second viscose is a starch gel.
A paper-plastic packaging box, which is manufactured by the method for producing a paper-plastic packaging box according to any one of claims 1 to 9.