KR200307628Y1 - Anti-slip and heavy duty bag - Google Patents

Abstract

In the heavy packing zone which manufactures 2-4 layers of paper of high strength, the non-slip heavy packing zone which reduced the slipperiness of the outer paper is disclosed. In the heavy packing zone, the outer paper is composed of 30 to 80% by weight of semichemical pulp and 20 to 70% by weight of recycled pulp, virgin pulp, and a pulp selected from the group consisting of a mixture thereof, to A kraft paper, It consists of kraft paper chosen from the group which consists of general kraft paper and B kraft paper.

Description

Anti-slip heavy packing bag {Anti-slip and heavy duty bag}

The present invention relates to an anti-slip heavy packing zone, and more particularly, in the heavy packing zone, which is manufactured by superposing two to four layers of high strength paper, The anti-slip heavy pavement zone is reduced.

The heavy packing zone is a zone for accommodating heavy contents such as cement, feed, sugar, milling, chemistry, etc., and is usually manufactured by overlapping two to four layers of strong paper such as kraft paper. Kraft paper used in the manufacture of such a heavy packing zone is a kind of chemical pulp, and has sufficient tensile strength, tear strength, elongation, and the like so that the package does not burst even after receiving heavy contents. However, since the heavy packing zones made of such kraft paper have a slippery surface, when the heavy contents are stacked and stacked, the heavy packing zones slide to each other, making it difficult to stack and stack a plurality of heavy packing zones. This is especially serious when laminating at an angle. In addition, due to the international standardization and unification of logistics and loading systems, the anti-slip function of the goods is demanded while moving from the place of production to the place of consumption.

In order to prevent slipping of the heavy-package zone made of kraft paper as described above, a technique of coating or impregnating an oil or an inorganic material on the kraft paper that forms the outer surface of the heavy-package zone, specifically, for example, colloidal silica on the surface and inside of the paper Although a method of adding is known, such a technique requires an additional process of coating or impregnation treatment, and thus has a disadvantage in that it is difficult to apply to general general purpose products due to an increase in manufacturing cost.

Accordingly, an object of the present invention is to provide a non-slip heavy-packing zone that does not slip even when stacked and stacked in an oblique state.

Another object of the present invention is to provide a non-slip heavy packing zone that can be economically produced.

1 and 2 are cutaway front views and cross-sectional views of one side of the zone, respectively, to show a first embodiment of a non-slip heavy packing zone according to the present invention;

3 and 4 are cutaway front views and cross-sectional views of one side of the zone, respectively, to show a second embodiment of a non-slip heavy packing zone according to the present invention;

5 and 6 are a cutaway front view and a cross-sectional view of one side of the zone, respectively, to show a non-slip zone consisting of the outer shell and the bay according to the present invention.

In order to achieve this object, the present invention is in the heavy packing zone, the outer shell is selected from the group consisting of 30 to 80% by weight of semi-chemical pulp and 20 to 70% by weight of recycled pulp, virgin pulp and mixtures thereof It is made of pulp, and provides a non-slip heavy packing zone consisting of kraft paper selected from the group consisting of A kraft paper, general kraft paper and B kraft paper.

Here, the heavy packing zone may further include one to three inlays composed of kraft papers selected from a crowd consisting of A kraft paper, a general kraft paper and a B kraft paper between the outside and the outside. In addition, the recycled pulp is preferably selected from the group consisting of primary recycled pulp, secondary recycled pulp and mixtures thereof in order to maintain the strength and printability suitable for use as the outer area of the zone, the foreign material is cationic It is preferable to include 0.1 to 3 parts by weight of an additive selected from the group consisting of a polymer acrylic copolymer, a polyacrylamide-based strength enhancer, a cationic starch, and a mixture thereof with respect to 100 parts by weight of the semichemical pulp.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the accompanying drawings indicate members having the same function.

1 is a cutaway front view for showing a first embodiment of the anti-skid heavy packing zone according to the present invention, Figure 2 is a cross-sectional view of one side of the zone shown in FIG. 1 and 2, the anti-slip zone according to the first embodiment of the present invention is 30 to 80% by weight semichemical pulp and 20 to 70% by weight recycled pulp (also called "paper pulp"). Or the outer shell 10 made of virgin pulp, two inlays 20 and 22 made of B-kraft paper, and to 30 made of A-kraft paper. In FIG. 1, reference numeral 40 denotes a sewing unit. Figure 3 is a cutaway front view for showing a second embodiment of the anti-skid zone according to the present invention, Figure 4 is a cross-sectional view of one side of the zone shown in FIG. As shown in Figures 3 and 4, the anti-skid zone according to the second embodiment of the present invention is composed of 30 to 80% by weight of semi-chemical pulp and 20 to 70% by weight recycled pulp or virgin pulp (10) It consists of a sheet of inlay 20 made of B-kraft paper such as OY kraft paper, GKP, and the like, and (30) made of general kraft paper. In FIG. 3, reference numeral 40 denotes a sewing unit.

The present invention includes a semi chemical pulp (SCP) in the outer region (10, outermost) of the 2 to 4 ply region constituting the heavy pavement, thereby increasing the roughness of the outer surface 10 to prevent slipping Give a function. Therefore, the outer surface 10 of the anti-slip heavy packing zone according to the present invention consists of a pulp selected from the group consisting of 30 to 80% by weight of semichemical pulp and 20 to 70% by weight of recycled pulp, virgin pulp and mixtures thereof. . When the content of the semi-chemical pulp is less than 30% by weight, the surface roughness of the surface of the outer shell 10 is not sufficient, so that the zone is slippery, and when it exceeds 80% by weight, the tensile strength of the outer shell 10, phosphorus Physical properties such as heat strength and elongation may be deteriorated.

Semi Chemical Pulp (SCP) refers to pulp produced by softening a tissue by a short time chemical treatment and using a mechanical treatment in combination with a pulp raw material, also commonly referred to as a semi-ground pulp. Semichemical pulp was developed in the United States with the aim of producing cheap pulp at high yields using hardwood instead of conifers. Various chemicals are used for chemical treatment of semi-chemical pulp. Generally, after pressing and cooking in a neutral sulfite buffer solution, the chipped pulp is mechanically treated with a refiner to make a final pulp. The cellulose content in the semichemical pulp is intermediate between the wood pulp and the chemical pulp, and a significant amount of lignin remains. In addition, since hemicellulose remains in a large amount, the adhesiveness between the fibers is strong, and high strength paper can be made. Usually, it is used as a corrugated cardboard raw material, and the bleached one is used as a raw material for newspaper paper and general imitation paper. In the present invention, the semi-chemical pulp, which was used solely as a raw material of corrugated paper, newspaper paper, general imitation paper, and the like is mixed with recycled pulp or virgin pulp to prepare the outer paper 10 of the zone, thereby roughening the surface of the paper 10. In addition, the slip of the zone can be prevented, and the zone has physical characteristics such as appropriate tensile strength.

The recycled pulp constituting the outer zone 10 of the zone according to the present invention together with the semi-chemical pulp is the primary recycled pulp (commonly referred to as AOCC), secondary recycled pulp (commonly referred to as KOCC), or the like. It is also possible to use virgin pulp before it is processed into paper, in place of or with recycled pulp. The primary recycled pulp (AOCC) is recycled waste paper containing mainly white paper, etc., which is used as a raw material such as newspaper, mainly made of long fibers, and the secondary recycled pulp (KOCC) recycled waste paper, which mainly uses newspaper, etc. It is mainly composed of short fibers.

When the outer paper 10 is manufactured by mixing recycled pulp and semichemical pulp as in the present invention, as the amount of the semichemical pulp is increased, the surface roughness increases and the anti-slip function is improved. Deterioration, tensile strength may be lowered, and in particular, when the pulp used with the semichemical pulp is a secondary recycled pulp (KOCC), such deterioration of physical properties may cause serious problems. As described above, when the physical properties of the outer layer 10 are deteriorated, additives such as a cationic polymer acrylic copolymer, a polyacrylamide-based intensifier, and a cationic starch may be added to increase the fixing ability of the dye and the pigment, thereby reducing the printability. It is preferable because it can prevent, and can increase the intelligence. The cationic polymer acrylic copolymer is a copolymer in which two or more dimethylaminoethyl methacrylate quaternary nitrogen compounds are polymerized with an acrylic raw material. It is preferable that the addition amount of the said additive is 0.1-3 weight part with respect to 100 weight part of semichemical pulp. If the amount of the additive is less than 0.1 parts by weight, the printing aptitude and the strength improvement effect is insignificant, and if it exceeds 3 parts by weight, it may reveal a limit to the diffusion of the additives, such as a paper power agent into the pulp and to enhance the strength.

The outer surface of the zone according to the present invention is similar to a conventional paper manufacturing process, dissociates and concentrates semi-chemical pulp and recycled pulp or virgin pulp raw materials, and then manufactures paper, press, dewater, dry and cut It can manufacture. Meanwhile, in a general paper manufacturing process, a calendering process is performed to increase the strength and the appearance of the paper. However, in the manufacture of the zone according to the present invention, if necessary, it is also possible to partially exclude the calendering process for smoothing the paper surface during the paper manufacturing process, thereby increasing the anti-slip and the roughness of the paper. Therefore, the calendaring process may be performed only on one side.

The anti-slip heavy wrapping zone according to the present invention and / or (內 紙) is made of a common zone inlay or material, such as A kraft paper, general kraft paper, B kraft paper. The A kraft paper is kraft paper made using 100% virgin pulp, and the general kraft paper is kraft paper containing 30 to 40% by weight of primary recycled pulp (AOCC) in 60 to 70% by weight of virgin pulp. In addition, B-kraft paper is used as sandwich paper of various zones and inlays, corrugated skin, or PP woven bags, and usually 0 to 40% by weight of primary recycled pulp (AOCC) and 60 to secondary recycled pulp (KOCC). Consisting of 100% by weight, specifically OY kraft paper, GKP (Green Kraft Paper, green kraft paper) and the like can be exemplified.

As in the first and second embodiments, the zone of the present invention includes an outer surface 10 that can be slipped, and the other inlays 20 and 30 are variously modified according to the purpose of the zone. Can be used. For example, in the case of a zone that requires high tensile strength, such as cement bags, a zone of the same structure as in Example 1 is prepared, but both inlays 20, 22 and 30 are made of A-kraft paper. In the case of sugar and flour bags, two inlays 20 and 22 can be made of B-kraft paper. In addition, in the case of a feed bag having a relatively light weight content, a zone having the same structure as in Example 2 may be manufactured, but one inlay 20 and 30 may be manufactured in B-kraft paper. In addition, as shown in Figures 5 and 6, it is possible to configure the zone of the present invention only by the outer shell 10 and the to 30, in this case, the outer shell 10 and the 30 is sufficient to require It is necessary to form the thickness of the outer shell 10 and / or to 30 to have a tensile strength.

In the anti-slip zone according to the present invention, the sewing portion 40 for sealing the upper and lower openings of the zone is a finishing portion sewn with a cotton thread on the creep tape and the wheel cord as in a normal zone, if necessary, the general craft It can be used as a reinforcing paper by making a strip of paper. The reinforcing paper is made to be slightly smaller than the creep tape to be in close contact with the inlet of the rent, and the creep tape and the Fila coat are padded and sewn.

The anti-skid zone according to the present invention has the same or similar physical properties as compared to the general zone of the same structure, but exhibits excellent anti-slip performance. Specifically, to prepare a zone having the same structure as in Example 2, the outer shell 10 as a non-slip zone according to the present invention is made of about 50% by weight of semi-chemical pulp and about 50% by weight of virgin pulp, one inlay When (20) and (30) are made of B-kraft paper (referred to as the "invented product"), the outer zone is made of ordinary kraft paper as a conventional zone, and one inlay and to is made of B-kraft paper. Tensile strength and sliding properties of one case (referred to as "prior product") were measured and shown in Table 1 below.

Tensile Strength (Portrait) Tensile Strength (Landscape) Coefficient of friction This product 5.77 3.43 0.945 Conventional products 5.75 3.44 0.815

At this time, the tensile strength (unit: kgf / cm ² ) was measured by the tensile strength test method of packaging general industry standard M7014-80 paper cardboard, the slipperiness was measured by the friction coefficient test method of general industry standard M7135-90 paper and cardboard packaging. , The numerical value of Table 1 shows the average value by measuring each physical property value five times. From Table 1, it can be seen that when prepared by including a foreign chemical pulp as in the present invention, the tensile strength is similar to the conventional product, but the slipperiness is significantly improved.

As described above, the non-slip heavy packing zone according to the present invention does not slip even when stacked or stacked at an angle, which is advantageous for transporting, loading, and storing the product, and using a relatively inexpensive semichemical pulp. By manufacturing, it is possible to economically produce a heavy packing zone. Anti-skid heavy packing zone according to the present invention is useful for the packaging of cement, sugar, milling, feed, grain, chemical, paper.

Claims (5)

In the heavy packing zone, the outer shell consists of 30 to 80% by weight of semichemical pulp and 20 to 70% by weight of recycled pulp, virgin pulp and pulp selected from the group consisting of mixtures thereof, or A kraft paper, general An anti-slip heavy pavement zone selected from the group consisting of kraft paper and B kraft paper. The anti-skid heavy packing zone according to claim 1, wherein the heavy packing zone further comprises an inlay made of kraft paper selected from a crowd consisting of A kraft paper, general kraft paper and B kraft paper between the outer and outer areas. The anti-skid heavy pavement zone of claim 1, wherein the recycled pulp is selected from the group consisting of primary recycled pulp, secondary recycled pulp, and mixtures thereof. According to claim 1, wherein the foreign material is selected from the group consisting of cationic polymer acrylic copolymer, polyacrylamide-based strength enhancer, cationic starch and mixtures thereof 0.1 to 3 based on 100 parts by weight of the semi-chemical pulp A non-slip heavy packing zone that contains a weight part. The non-slip heavy packing zone according to claim 1, wherein the outer sheet is excluded from one or both sides of the paper manufacturing process.