KR200189629Y1 - Corrugated cardboard applied with loess - Google Patents

Abstract

The present invention relates to a pavement corrugated cardboard applied with ocher, which can store various crops such as vegetables, fruits, flowers, etc., which are important for maintaining freshness, for a long time in a fresh state, and the surface paper (10) and the backing paper (20) constituting the cardboard (1). And the corrugated cardboard (1) is characterized in that the ocher 40 mixed with the binder resin is applied or penetrated to at least one of the folded paper (30), the binder resin is inside of the backing paper (20) It is preferable that the mixed loess 40 is applied.

Description

Corrugated Cardboard Applied with Loess

(Technology)

The present invention relates to a corrugated cardboard used as a material of a packaging box, and more particularly, to a corrugated cardboard for applying ocher, which can store various crops whose freshness is vital, such as vegetables, fruits or flowers, in a fresh state for a long time. .

Background art A packaging container used to store various crops (such as vegetables, fruits or flowers) (hereinafter referred to as fresh crops) during distribution and storage, which is a box made of corrugated cardboard bonded by bending paper between the surface paper and the backing paper. However, it is practically difficult to store and store these fresh crops for a long time in a fresh state, which is vital to maintaining freshness, in a conventional cardboard packaging box. The problem of corruption in storing fresh crops in conventional cardboard packaging boxes is known to be due to oxidation due to over-maturation caused by the ethylene groups produced in the fresh crops themselves. In addition, the occurrence of decayed bacteria due to changes in external temperature and humidity, and drying according to the sealed state It is known that the cause is oxidation caused by blocking the supply of oxygen in a proper amount. As one of the methods to solve the corruption problem in the storage process of such fresh crops, it is a leading oil for replacing corrugated cardboard like polyethylene resin film. Although a film has been developed, such a synthetic resin film does not have the desired effect due to the adsorption of ethylene gas and the sealing with the outside, in addition to the fact that it causes environmental pollution in the process of disposal.

The purpose of the present invention is to improve the existing corrugated cardboard used for the packaging of various fresh crops such as perishable vegetables, fruits, flowers, etc., so that these fresh crops can be stored in a fresh state for a long period of time, It is to reduce the economic loss caused by corruption.

1 is a schematic view of an exemplary cardboard according to the present invention,

2 is a schematic view of another exemplary cardboard according to the present invention;

Figure 3 is a schematic diagram showing an example of a process for producing a cardboard according to the present invention.

* Explanation of symbols for the main parts of the drawings * 1: Corrugated cardboard 10: Surface paper 20: Backing paper 30: Bending paper 40: Ocher mixed with binder resin

According to the present invention, there is provided a corrugated cardboard which is coated or impregnated with ocher mixed with a binder resin on at least one of the surface paper, the back paper, and the folded paper constituting the cardboard.

Even if the ocher mixed with the binder resin is applied only to the inner side of the backing paper, the purpose of the present invention can be sufficiently achieved, but in order to further improve the efficacy of the ocher, not only the backing paper but also the ocher mixed with the surface paper and the bending paper binder resin Can be applied.

The ocher-applied corrugated cardboard according to the present invention has been used for storing fresh crops for a long time. It will be able to extend the storage period.

Traditionally, the storage of fresh crops in crypts for long-term storage is known to be due to the fact that loess, which constitutes crypts, activates the physiological action of fresh crops to absorb and neutralize or dilute decaying toxins. It is also known that loess has excellent temperature and humidity control functions to alleviate changes in temperature and humidity. Especially, the enzyme of protease contained in loess is known as an enzyme that is characterized in suppressing decayed bacteria.

The loess used in the present invention is preferably to use loess having a particle size of about 250 mesh or less, such ocher is to take the ocher taken from the mine in the bucket to remove the impurities and remove the impurities and to separate the particle size Afterwards, it can be obtained by purifying with high pressure steam, drying, and then again separating the particle size into secondary wheat, and then crushing it with beeswax. The loess thus obtained is generally catalase, diferol, oxidase, saccharase, pro It contains various enzymes such as other enzymes and potassium carbonate, and its particle size is about 0.02 ~ 0.05MM, and it contains various mineral particles such as quartz, feldspar, mica, and calcite. It is known to have a chemical composition comprising 13% alumina, 5-6% iron, about 2% magnesium, sodium and potassium, about 8% lime, and the like. Binder resin is used as a means for applying ocher to corrugated cardboard. The binder resin is not particularly limited as long as it can hold the loess on these sheets without falling off or peeling off when the ocher is applied or penetrated to the backing paper and / or the surface paper and the bent paper constituting the corrugated cardboard. There are acrylic resins, epoxy resins, urethane resins and amino resins. Such resins are formed by polymerizing monomers (monomers) into polymers using various catalysts. A modified acrylic urethane binder prepared by mixing a urethane resin (40% by weight) and copolymerizing a residual amount of vinyl acetate monomer may be used. The modified acrylic urethane binder thus prepared becomes a loess binder having excellent abrasion resistance, impact resistance, flame retardancy, flexibility, water resistance, temperature resistance, and adhesiveness. The binder resin prepared is mixed with loess appropriately. The ocher and binder resins are mixed at an appropriate ratio so that the mixed solution of the binder resin and the ocher is not too thin or thick, so that the ocher solution can be easily applied, penetrated, and dried on the backing paper or the like. It is suitable to work by mixing 80-40% by weight of binder resin with 20-60% by weight of yellow loess, as described above. The loess mixed with the binder resin can be applied to not only the backing paper but also to the surface paper and the bent paper to further increase the efficacy of the loess. Specifically, the mixed solution of the binder resin and the loess is made from the paper pulp. And / or the horn in a bath in which paper pulp is accommodated in a process of producing surface paper and bent paper. The addition of a solution allows the loess to penetrate and adhere to the inside of these paper pulp, or in the process of producing corrugated cardboard by bonding back paper, surface paper and bent paper, spraying the mixed solution on the back paper and / or the surface paper to make the back paper and / or The ocher may be applied and fixed to the surface paper, and both the penetration and the application may be performed alone or in parallel. Hereinafter, the corrugated cardboard to which the ocher according to the present invention is applied will be described in detail with reference to the accompanying drawings. The following embodiments are merely illustrative of the cardboard applied with loess according to the present invention, and are not intended to limit the scope of the present invention. Figure 1 is a schematic view of an exemplary cardboard according to the present invention, Figure 2 Schematic diagram of another exemplary cardboard according to the present invention, Figure 3 is a schematic diagram showing an example of a process for producing a cardboard according to the present invention. Fig. 1 shows an example in which ocher is applied only to the backing paper, and Fig. 2 shows an example in which ocher is infiltrated into both the surface paper, the backing paper, and the bent paper, and the ocher is applied to the inner side of the backing paper. As shown in Figure 2, the corrugated cardboard 1 according to the present invention has a basic configuration in which the bending paper 30 is bonded between the surface paper 10 and the backing paper 20, as in the conventional general cardboard. According to a feature of the present invention, at least one of the surface paper 10, the backing paper 20, and the bending paper 30 is coated or penetrated with ocher 40 mixed with a binder resin. It is sufficient to apply the ocher mixed with the binder resin only on the inner side of the backing paper 20, but as shown in Figure 2 to further enhance the efficacy of the ocher for maintaining the freshness of the fresh crop as shown in FIG. In addition, the surface paper 10 and the bent paper 30 may also be used to apply or penetrate the loess 40 in which the binder resin is mixed (see FIG. 2). The application here is the backing paper 20 and / or the surface paper. (10) and the ocher solution mixed with a binder resin on the surface of the bending paper 30, for example by spray spraying to fix, and the penetration is the paper pulp in the process of manufacturing the backing paper and / or surface paper and bending paper from the paper pulp In the tank (2) in which is accommodated The backing paper 20 and / or the surface may be prepared by adding a solution to allow the loess to penetrate into these paper pulp and then manufacturing the backing paper 20 and / or the surface paper 10 and the folded paper 30 from the paper pulp. The loess is fixed to the paper 10 and the folded paper 30. An example of a method of manufacturing the corrugated cardboard 1 according to the present invention will be described with reference to FIG. The mixed solution of the loess 40 mixed with the binder resin prepared by the method as described above is added to the bath 2 containing the paper pulp and mixed well, and then the backing paper 20 and / or the surface paper from the paper pulp. (10) and the folded paper 30 are manufactured according to a conventional papermaking method, and the papers thus prepared are put into a corrugated cardboard manufacturing process in a state of being wound on a winding roller 3. Thus, the yellow soil uniformly penetrates the entirety of the backing paper 20 and / or the surface paper 10 and the bent paper 30 and coalesces with these papers. Next, the backing paper 20, the surface paper from the winding roller 3 10 and the folded sheet 30 are withdrawn, and the folded sheet 30 is bent by passing through the forming roller 4, and then passed through the adhesive tank 5 in which the adhesive is accommodated to apply the adhesive to the adhesive surface. Thereafter, the backing paper 20, the surface paper 10 and the bending paper 30 are passed through a plurality of compression rollers 6 to bond the backing paper 20 and the surface paper 10 to both sides of the bending paper 30. Then, the sheets of paper are laminated. Then, with respect to the back surface 20 of the corrugated cardboard 1 which has passed through the extrusion roller 6, the ocher and binder resins are sprayed with a spray 7 or the like on the outer side of the corrugated sheet 30 not bonded to the bent paper 30. Spray and apply. Finally, the cardboard 1 is passed through a drying roller (drum) 8 to be compressed and dried. Exemplary corrugated cardboard 1 according to the present invention, which is penetrated into and coated on the outer surface of the backing paper 20, is completed. At this time, if the speed of the drying roller is slow, the corrugated paper shrinks and stains and cracks of the coated part. As this may occur, the amount of corrugated cardboard produced according to the drying roller speed should be about 130 to 150M. The thickness of the loess applied to the backing paper 20 with the spray 7 is preferably 0.5 mm or less. If the thickness is 0.5 mm or more, defects such as cracks may occur in the crimping and drying process, and the production cost increases. The inventors made cardboard boxes (1) and commercially available cardboards of the present invention to package fresh crops collected directly from the farm, in the normal packing condition, and then store them at normal storage temperature and humidity. The number of days was measured, and the results were as shown in Table 1. The corrugated cardboard 1 of the present invention used in this example was 35 wt% of acrylic resin, 40 wt. A modified acryl urethane binder prepared by copolymerizing% urethane resin and residual vinyl acetate monomer in 4 to 6 was mixed to prepare an ocher solution mixed with binder resin. The paper pulp of the backing paper, the surface paper and the bending paper was immersed in the ocher solution mixed with the Inder resin, and the backing paper, the surface paper and the bending paper were prepared from the immersed paper pulp, and corrugated paper (1) prepared therefrom was used. One] Significant extension of the shelf life of fresh crops by corrugated cardboard according to the present invention, by neutralizing by adsorbing the ethylene groups emitted by fresh crops closely related to decay of the loess applied to the corrugated cardboard and blocking external temperature changes Fresh crops by buffering temperature changes inside the box, storing and releasing moisture from the crops or coming from the outside, maintaining proper humidity, and supplying adequate oxygen to the crops by maintaining adequate breathability. It seems to be achieved by delaying the composition of the environment that can be corroded or dried.

The ocher applied cardboard according to the present invention described above, when used as a material of the packaging box for packaging fresh crops, such as perishables, various vegetables, fruits, flowers, compared to the conventional packaging box made of cardboard These fresh crops can be stored for longer periods of time without corruption.

Claims (2)

In the corrugated paper including the surface paper 10, the backing paper 20, the bending paper 30, at least one of the surface paper 10, the backing paper 20 and the bending paper 30 is mixed with a binder resin Corrugated cardboard characterized in that the loess (40) is applied or penetrated. The corrugated cardboard according to claim 1, wherein the ocher (40) in which the binder resin is mixed is coated inside the backing paper (20).