JPS58193142A - Method and device for bonding pasting corrugated cardboard of film - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for adhering cardboard having a Dewosnack film adhered to its surface, and an apparatus used in the method.

The corrugated board with the above structure was recently developed by the inventor of the present invention, Hao, and because it has excellent water and moisture resistance and toughness, it has been used in various types of machinery and equipment, including electrical appliances. It is considered to have a wide range of uses as a material.

However, since the surface is made of plastic film and is very smooth, adhesives do not adhere well to it, making it difficult to adhere to the film surface when assembling it as a packaging box.

Therefore, the object of the present invention is to provide a method for strongly adhering the above-mentioned special corrugated cardboard on the film surface, and two apparatuses used to carry out the method.

That is, the method of the present invention is to form a rough surface on the adhesive-coated surface of the film to strengthen the bond with the adhesive when adhering a cardboard to which a film is attached.

Further, the first device of the present invention is configured to provide a goofing roller in the middle of transporting the film in the longitudinal direction, and to rub the goofing inder against the film surface of the flowing cardboard to form a rough surface at a predetermined portion of the film. It is.

Furthermore, the second device of the invention is provided with barbs on the outer circumferential surface of the rotating drum, and nine protrusions are densely protruded, and when corrugated board is fed between the rotating drum and the press roll, the protrusions touch the film surface. It is constructed so that the structure of the kraft paper beneath the film surface is crushed by the piercing process.

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 schematically shows a corrugating machine incorporating a device used to carry out the method of this invention. That is, it is an integrated process in which a corrugated board P with a film attached thereto is manufactured using a corrugating machine, and a part of the film is formed into a rough surface.

Regarding the method of manufacturing film-attached cardboard using a corrugating machine, please refer to Japanese Patent Application No. 56-16i59.
No. 74 has already been filed by the present applicant.

In the figure, 1, 2.3 are Mill-Ro μ stands, mill roll stand 1 holds 4 m of core base paper, 2 holds front liner base paper 51, and 3 holds 6 m of back liner base paper as a roll. Among the supplied core paper 41 and front liner base paper 5m, kraft paper is used, but the back liner base paper 6a is made of kraft paper (as shown in Fig. 5).
A laminated film f of K plastic is used.

The medium core base paper 4a fed out from the Milo Y stand L is corrugated by the corrugated rows Iv7 and 8, and starch paste is applied to the top of one corrugation by the glue port 14/9.
jA/The nine-sided liner base paper 51 drawn out from the low rotand 2 is heated and pressed onto the top of the flute by a press roll IO. In front of the double facer portion S of the single-sided corrugated board F1 thus produced, starch glue is applied to the top of the other corrugated board by another glue roll 11.

On the other hand, the back liner base paper 6d fed out from the Mi-Ro μ stand 3 is a single-sided corrugated board/L/F, a corrugating board μ) 12 of the double facer part S, and a press row μ
13, and the paper surface of the back liner base paper 6a is pressed against the corrugated top of the single-sided corrugated board ~ F1. However, this press roll A/13 is given a low temperature at which the film f does not melt. Therefore, adhesion of the back liner base paper 64 is not completed. The adhesion is gradually performed during transportation of the cardboard A/F. This double facer part S includes a cardboard tvF transfer device T necessary for the apparatus of this invention.

That is, a heating free plate 14 and a cooling free plate 15 are provided below the driven corrugating plate μ) 12, of which the heating free plate μ) 14 circulates around the heating section 16. It is supported by idle rotation low J%/144. Therefore, the corrugated board PV drawn in from between the corrugating belt 12 and the press row A/13
F is transferred as it is by the corrugating Peptide 12 while sliding it onto the free Peptide μ) 14.15,
In addition, it is gradually heated on the heating plate 14,
Heat is given to the starch paste to solidify it, and the back liner 6
is completely adhered to the top of the 40th step of the core.

The cardboard μF separated from the cooled free paper 15 is sent to the other side by the transfer device T, but there is a crushing row 17 that presses one side of the film of the cardboard pvP and a crushing row 17 that presses one side of the film. Provided with a friction Gutinder 18,
In addition, press rows 19 and 20 are provided for pressing down the corrugated board F in relation to the crushing row A/17 and the grinder 18, and a safety row A/21 is provided below the grinder 18 to maintain its stability.

1. The curved row A/17 has a protruding surface 2 on the curve as shown in Fig. 2.
2, and is connected to the upper press roll 19 by a slab 23 so as to rotate at the same time. The 1+ grinder 18 is rotated by a motor 24 in the opposite direction to the flow direction of the stage po fi/F.

The cardboard fi/ sent into the crushed low fi/17 at that ζ
In F, the protruding surface 22 intermittently presses one side of the corrugated board A/F film to crush the core 4 by rotating the crushing row A/170. In the ninth Danbo/L/FK, the recess 25, which is very slow to restore, is on one side of the film! The grinder 18 leaves a recess 25 on one side of the film and forms a rough surface 26.
form. Reference numeral 27 is a wiper for wiping off the cutting waste, and it can also be used with a layer of towel fabric.

In this way, rough surface 2 is applied only to one side of the film where adhesion is expected.
Finally, the cardboard PvP on which 6 has been formed is cut into a certain size by a cutter 28.

In this embodiment, a case will be described in which the goofing device is incorporated into a corrugating machine for V-t manufacturing, but the above-mentioned goofing device may also be installed and installed in a glue device in a cylinder manufacturing process or a printing device.

In particular, when the goofing device is incorporated into a corrugating machine, a rough surface is formed in the width direction of the sheet, but when it is incorporated into a tube-making process, it becomes possible to form a rough surface in the opposite direction to the width direction of the sheet.

FIGS. 4 to 7 show the second
This invention relates to an inventive device.

In the figure, 29 is a forming drum for punching out a template 30 of a corrugated pole product, and 35 is a press roll. Molding drum 2
9 is made of wood and has a hollow cylindrical shape. A cardboard tvF cutting blade 31 and a press blade 32 for forming a bending line are arranged on the outer peripheral surface, and a large number of protrusions 33 for forming a rough surface are closely protruded at predetermined locations. A barb 34 is provided as shown in FIG. Further, rubber pieces 41 are appropriately arranged around the cutting blade 31, press blade 32, and the protrusions 33 densely packed areas.

As shown in FIG. 5, a screw is used to form the protrusion 33, which is screwed into the drum 29 from the inside so that the tip protrudes outward, and the screw thread is used as the barb 34. Other shapes of the protrusion 33 include a shape such as a hook shape, a complex shape, and the like.

In the above configuration, the corrugated board yvF with a film attached between the driven forming drum 29 and the Dobreslow A/35
When inserted, a template 30 is formed by the cutting blade 31 and press blade 32, but at the same time, the protrusion 33 pierces the surface of the film and punches out the liner 6, so the template 300
A rough surface 26 with a large number of holes 36 densely packed is formed at a predetermined location. Furthermore, when the protrusion 33 is pulled out, the barb 34 catches and pulls out the tissue of the liner 6, as shown in FIG. 6, so that a nap 37 of the paper texture is generated on the surface of the film.

Therefore, when the adhesive is applied to the rough surface 26 of the film, as shown in FIG. The spread 40 has an escape prevention effect. Moreover, a very strong bonding form of the adhesive can be obtained by intertwining with the nap 37. Since the surface of the film to be coated is formed into a rough surface, compared to the case where the adhesive is coated on the smooth surface of the film, a very superior adhesive effect can be obtained due to the strong bonding of the adhesive.

Therefore, if the present invention is applied when film-attached cardboard is used, for example, as a packaging material for various products or as a construction material, airtightness and watertightness can be ensured.

In addition, both devices of the invention enable the formation of a rough surface necessary for carrying out the method of the invention described in 1, and are compatible with conventionally used corrugating machines, glue devices, printing devices, or cardboard die-cutting machines. It can be incorporated into the system with slight modifications, and rough surfaces can be formed efficiently and advantageously through an integrated process. In particular, the device of the latter invention is capable of forming a rough surface that provides an extremely superior adhesive function.

[Brief explanation of drawings]

FIG. 1 is a front view of a corrugating machine showing the apparatus used to carry out the method of this invention, FIG. 2 is a perspective view showing the main parts of the apparatus, and FIG. 5 is a sectional view of the back liner base paper. FIG. 4 is a perspective view showing another device used to carry out the method of the present invention, FIGS. 5 and 6 are cross-sectional views of a corrugated board showing the order in which the same rough surface is formed by the same device, and FIG. 7 is a perspective view showing the same rough surface. It is a sectional view showing the adhesion state of the step pole in .

Claims (1)

[Scope of Claims] 1) A method for adhering a film-attached cardboard board, which comprises forming a rough surface in advance on the surface of the film to which an adhesive is applied, for adhering a cardboard board with a film attached to the surface. 2) Formation of a rough surface of a film adhesion board μ characterized by being provided with a transfer device for the film adhesion film board μ and a grinder for forming a rough surface on the film surface of the film board μ being transferred. Device. 5) The rough surface of the film-attached cardboard according to claim 2, which is integrated into a corrugating machine configured to manufacture film-attached cardboard. Forming device. 4) Between a rotating drum and a dense roll into which the film-attached cardboard is fed, a large number of protrusions that pierce the film surface of the cardboard are densely provided on the outer peripheral surface of the rotating drum,
A device for forming a rough surface of film-attached cardboard, characterized in that the protrusions are formed with barbs that break up the structure of the kraft paper beneath the film surface. 5) The apparatus for forming a rough surface of a corrugated cardboard product with a film attached thereto according to claim 4, wherein the rotating drum is a drum for forming a template for a corrugated cardboard product.