KR100375941B1 - Single-Side Formed Dual-Medium Corrugated Board Forming Apparatus - Google Patents

Abstract

The present invention relates to an apparatus for forming a corrugated cardboard in which the corrugated paper is laminated on the back paper in a double, in particular, to a single-sided double-corrugated cardboard molding device for simultaneously adhering two layers of corrugated paper on one surface of the back paper by a series of roller trains. It is about.

The present invention, the supply drums for supplying the backing paper and the two corrugated sheets, respectively, two pairs of bone forming rollers for molding the corrugated cores supplied from the feeds, and the adhesive coating on the peaks of each formed corrugated core In having the adhesive applying means, the two pairs of bone forming rollers 55a, 55b, 56a, 56b are installed so that the corrugated cores 52, 53 are supplied from each other in reverse directions, and the corrugated cores 52, 53 are formed. The bone forming rollers 55b and 56b on the outlet side are installed to be engaged with each other, and the two side forming rollers 56 and 53 are bonded to the backing paper 51 to which the two wick cores 52 and 53 are bonded to each other. The press roll 57 is connected and installed. Therefore, it is effective in shortening molding time, securing installation space, and increasing strength.

Description

Single-side Formed Dual-Medium Corrugated Board Forming Apparatus}

The present invention relates to an apparatus for forming a corrugated cardboard in which the corrugated paper is laminated on the back paper in a double, in particular, to a single-sided double-corrugated cardboard molding device for simultaneously adhering two layers of corrugated paper on one surface of the back paper by a series of roller trains. It is about.

The invention including a corrugated cardboard molding apparatus in which the corrugated cardboard is stacked in duplicate is disclosed in Japanese Patent Application Laid-Open No. 0181565. This prior art relates to a method and apparatus for forming multi-corrugated cardboard. Among these multi-corrugated corrugating apparatuses, an apparatus for forming at least an initial single-sided double-corrugated corrugated cardboard (corrugated cardboard having two corrugated sheets stacked on one side of a backing paper) 15, as shown in FIG. The means 10 constitute its main component. This means 10 is additionally provided with corrugated medium supply drums 11, 11a, 12, 13 for supplying a back paper (liner) and two corrugated mediums, respectively.

The single-sided dual-core corrugated cardboard stacking means 10 is continuously formed to guide the first corrugated medium 14 and the second corrugated medium 19 and have the same or different bone pitch and bone height as shown in FIG. The backing paper 18 by pressing two pairs of the first bone forming rollers 16a and 16b, the second bone forming rollers 17a and 17b, and the backing paper 18 first toward the first corrugated paper 14. By continuously stacking on the first corrugated medium 14 to form a single-sided corrugated cardboard 15, and then secondly pressing the backing paper and the first corrugated medium 14 toward the second corrugated medium 19. It consists of a series of pressing means to form a one-sided double-core corrugated cardboard (15). The pressing means includes two belt drive rolls 20 positioned at both sides of the first bone forming roller 16b and the second bone forming roller 17b, two guide rolls 21 positioned at the center, and the belt. It consists of the press belt 22 which carries out an endless track movement between the drive roll 20 and the guide roll 21. As shown in FIG.

In this single-sided dual-core corrugated cardboard forming apparatus, the adhesive applying means 23 for applying an adhesive to the first corrugated core 14 formed from the first osteogenic rollers 16a and 16b has a side of the first osteogenic roller 16a. It is attached to the backing paper 18, which is heated and supplied by the preheating means 24, the adhesive applying means 25 is also installed on one side of the second bone forming roller (17b) to the second bone forming roller ( By applying an adhesive to the second corrugated core 19 molded in 17a, 17b), the second corrugated core 19 is bonded to one surface of the first corrugated medium 14 adhered to the backing paper 18 again.

However, in the prior art as described above, in addition to the two pairs of bone forming rollers, a series of pressing means including a press belt is added, and thus, a bone wick having a bone is separated from the bone forming roller, so that the bone wick and the height of the bone wick are separately measured. If a measurement device of the first and second core deviate from the result of the measurement by the measuring device, the device for adjusting the tension of either the first core or the second core wick and the correction value is verified. Measurement measures were needed to achieve this. As a result of the need for several measuring means and correction means, the installation space becomes large and the molding time becomes relatively slow.

In addition, the single-sided double-corrugated corrugated cardboard obtained by the above-described prior art had a very good shock absorption effect, but had a relatively low compressive strength and a relatively slow production rate with respect to the glue bonding process. The reason why the compressive strength is lowered is that the first and second corrugations, which are bonded to one surface of the backing paper, are not bonded to each other except for the part forming the bone, and the compressive strength is high and the compressive strength is limited. I am getting it.

The present invention has been made to solve the problems according to the prior art as described above, the main object of the present invention is to simultaneously bond two layers of corrugated paper on one side of the backing paper by a series of roller train (roller train) to form a molding time Another object is to improve the compressive strength of one-sided double-corrugated corrugated cardboard by varying the bonding method between the corrugated core and the corrugated core.

1 is a block diagram of a double-sided corrugated cardboard molding apparatus of an embodiment of the present invention.

Figure 2 is an overall configuration of a conventional multi-corrugated cardboard forming apparatus.

Figure 3 is a block diagram of a double-sided corrugated cardboard forming apparatus of the conventional multi-corrugated cardboard forming apparatus.

<Description of the symbols for the main parts of the drawings>

51: liner, 52: first core, 53: second core, 54a, 54b, 54c: pre-heater, 55a, 55b: first bone forming roller, 56a, 56b: second bone Forming roller, 57: press roll, 58a, 58b: star roll, 59: spraying machine, 60: single sided double-core corrugated cardboard

In order to achieve the above object, the present invention provides a feed drum for supplying each of the backing paper and the two corrugated papers, two pairs of the bone forming rollers respectively forming the corrugated papers supplied from the feeds, and the peaks of the formed corrugated papers, respectively. In the adhesive having a means for applying the adhesive to the adhesive, the two pairs of the roller forming rollers are installed so that the corrugated core is supplied in the opposite direction to each other, and the oscillating rollers on the outlet side from which the corrugated core is molded are interlocked with each other and adhered to each other. The press roll is connected to the outlet side of one bone forming roller so that two layers of corrugated paper are supplied to the backing paper supplied.

On the side of the bone forming roller, a spraying machine capable of injecting a liquid sodium silicate adhesive or an adhesive containing an appropriate amount of antifoaming agent together with caustic soda on starch to the surface to be bonded of the bone cores is formed in a gratuitous manner.

The preheaters for heating the backing paper and the corrugated paper to be supplied are respectively installed at the outlet side of the supply drums.

According to the above configuration, the backing paper and the two corrugated wicks are fed to the bone forming rollers through the preheaters in the respective feed drums. At the same time, they are joined together and the backing paper is bonded while passing through the press roll on one side. That is, two pairs of bone forming rolls and press rolls are integrated to rotate together without error, thereby producing one single-sided double-corrugated cardboard continuously.

Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1. The illustration and description of the supply drums 11, 11a, 12, and 13 for supplying the back paper shown in FIG. 2 and the two corrugated papers (hereinafter referred to as the first corrugated paper and the second corrugated paper) are omitted.

The backing paper 51, the first corrugated core 52, and the second corrugated core 53 are heated to pass through the preheaters 54a, 54b, and 54c, respectively, and thus by the preheaters 54a, 54b, and 54c. The heated backing paper 51, the first rib core 52, and the second rib core 53 are supplied to the pair of bone forming rollers 55a, 55b, 56a, and 56b in three directions.

The two pairs of bone forming rollers 55a, 55b, 56a and 56b will be described by dividing them into the first bone forming rollers 55a and 55b and the second bone forming rollers 56a and 56b. Two first bone forming rollers 55a and 55b are meshed up and down. The outer surface of the first bone forming roller (55a, 55b) is formed in the second corrugated corrugated bone for forming a bone of a certain width and height, so that the second corrugated wick 53 passing therebetween has a constant shape Is molded into. Like the first bone forming rollers, two second bone forming rollers 56a and 56b are engaged up and down. The outer surface of the second bone forming roller (56a, 56b) is formed in the first corrugated corrugated bone for forming a bone of a predetermined width and height, so that the first corrugated medium 52 passing therebetween has a constant shape. Is molded into.

The upper roller 55b of the first bone forming roller and the lower roller 56b of the second bone forming roller are engaged left and right. Therefore, the first bone forming rollers 55a and 55b and the second bone forming rollers 56a and 56b are identical to each other. The second corrugated wick 53 is fed upward from below the first bone forming rollers 55a and 55b, and the first corrugated wick 52 is fed downward from the top of the second bone forming rollers 56a and 56b. The lower roller 55a of the first bone forming roller rotates in the counterclockwise direction, and the upper roller 55b rotates in the clockwise direction. The upper roller 56a of the second bone forming roller rotates clockwise, and the lower roller 56b rotates counterclockwise.

The press roll 57 is in contact with the lower roller 56b of the second bone forming roller. The press roll 57 is rotated in the clockwise direction and the backing paper 51 is supplied from the lower right of the press roll 57. Two pull rolls 58a and 58b which are a kind of adhesive application means which apply | coat an adhesive agent to the peak of the 2nd core wick 53 by which the bone was formed in a line shape are provided. One pull roll 58a is connected to the upper roller 55b of the first bone forming roller, and another pull roll 58b is connected to the lower roller 56b of the second bone forming roller.

The sprayer 59 which injects a free adhesive to the inner side of the second corrugated medium 53 (a contact surface with the first corrugated medium) is located on the upper roller 55b of the first bone forming roller. The adhesive supplied to this atomizer 59 uses a liquid sodium silicate and starch adhesive mixture selectively.

Liquid sodium silicate is applied for applications that do not affect the human body, and the starch adhesive mixture is applied for applications that may affect the human body. For example, the liquid sodium silicate component is determined within the range of 9 to 18% of sodium oxide, 28 to 38% of silicon dioxide, 0.05% or less of ferric oxide, and 0.2% or less of water insoluble content.

The starch adhesive mixture is a starch adhesive with an appropriate amount of antifoaming agent along with caustic soda. In this case, the mixing ratio of other additives to starch may be based on the ratio of starch 400KG, NaOH (33.3% dissolved water) 29.6L, boric acid 5.96KG, and antifoam 2.0L based on 1420L of water.

Looking at the operation state according to the above embodiment, the backing paper 51, the first corrugated medium 52 and the second corrugated medium 53 are continuously supplied in a heated state through the preheaters 54a, 54b, 54c. It is becoming. The first rib core 52 is supplied from the top down to the second bone forming rollers 56a and 56b, and the second rib core 53 is supplied up from the bottom of the first bone forming rollers 55a and 55b.

At this time, the adhesive portion is applied in a line shape by the pull roll (58a) to the peak portion corresponding to the inner surface (surface contacting the first rib wick) of the second bone wick 53 is formed. Then, the liquid adhesive is lightly sprayed on the inner surface of the second core wick 53 to which the adhesive is applied by the sprayer 59. At the next moment, the second corrugated wick 53 is bonded to the first corrugated ridge 52 in which the bone is formed, and the adhesion is made while being pressed while passing between the roller 55b and the roller 56b.

After the first corrugated bone 52 and the second corrugated 53 formed with bone are adhered to each other, an adhesive is applied to the outer peaks of the second corrugated medium 53 by a pull roll 58b, and then roller 56b. It is adhered to the backing paper 51 while being pressed by the press roll 57 between the and the press roll 57. Passing through the lower roller 56b and the press roll 57 of the second bone forming roller in this way, a complete single-sided double-core corrugated cardboard 60 is obtained.

The spraying agent 59 formed a free adhesive at a ratio exemplified above, and sprayed it on the contact surface of the second corrugated core, and the strength was similar or stronger than that of the DW fabric produced by the prior art. there was. In addition, the fine particles are adhered to each other very thinly by spraying free of charge, rather than by coating with a certain thickness, so that the working time and drying time are short, resulting in up to two times faster production effect.

There is no need for a series of pressurization means according to the press belt as in the prior art, thus eliminating the need for various measurement and correction means. In addition, the system itself consists of a single row of rollers that are interlocked with each other and sprays free adhesive onto two corrugated plates to reduce molding time and reduce installation space. In addition, by bonding the two wicks in the form of a combination of fine particles using a free adhesive as described above to maintain a kind of temporary adhesion state. Accordingly, when a strong impact is applied, the bending moment is applied to the inclined contact surface of the core wick and the core wick so that they are separated from each other, thereby absorbing and restoring the impact, thereby ultimately increasing the compressive strength while having an impact absorption effect. Will be.

Claims (3)

Feed drums for supplying the backing paper and the two corrugated sheets, respectively, two pairs of bone forming rollers for forming the corrugated cores supplied from the feeds, and adhesive applying means for applying adhesive to the peaks of the formed corrugated cores, respectively. In the one-sided dual-corrugated cardboard forming apparatus, The two pairs of bone forming rollers are installed so that the core cores are fed in the opposite directions, and the bone molding rollers of the outlet side from which the core cores are molded are interlocked with each other, and one side of the bone core rollers is bonded to the backing paper supplied with two layers of bone cores bonded to each other. Single-sided double-core corrugated cardboard molding apparatus, characterized in that the press roll connected to the bone forming roller outlet side of the installation. According to claim 1, wherein the bone-forming roller side to be sprayed to the surface of the bone-molded corrugated wick liquefied liquid adhesive or a starch-free adhesive with an appropriate amount of antifoaming agent together with caustic soda Single-sided double-core corrugated cardboard molding apparatus characterized in that the installation of a spray spray. The single-sided dual-core corrugated cardboard forming apparatus according to claim 1, wherein preheaters for heating the backing paper and the corrugated cores are respectively provided at the outlet sides of the supply drums.