KR800001072B1 - Process for preparing reinforced pasteboard - Google Patents

Abstract

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Description

Manufacturing method of reinforced core

1 is an explanatory diagram of a first embodiment.

2 is an explanatory diagram of a second embodiment.

3 is an explanatory diagram of a third embodiment;

4 is an explanatory diagram of a fourth embodiment.

The present invention relates to a method for producing a reinforced corrugated core (common name: medium paper) used in the manufacture of corrugated cardboard with high strength (STIFFNESS). Although the demand for compression resistance and demolition resistance is increasing due to the increase in exports and the increase in exports, the demand for compression and demolition resistance is generally increased. One inner liner is inserted in the middle of the dog, and the core used as the main raw material is bonded between the outer liner and the inner liner. The core used is manufactured without any reinforcement in the manufacturing process. As it is a corrugated cardboard box that uses this, the ring crush is only 5-7 when packing and transporting the goods, so the compressive strength is weak and it is easy to be destroyed. Especially, it is not suitable for export. In light of this, the present applicant has embarked on improving the core corrugated cardboard and surpassed the double corrugated corrugated corrugated cardboard. 2) succeeded in producing a reinforced core core.

[Ido corrugated cardboard of Bokyang-myeon]

[2nd double-sided reinforced corrugated cardboard]

Originally, compressive strength is the most important physical property of cardboard. When compressing a container at a constant speed when making a container with corrugated paper, the pressure resistance at which the first strain point appears is measured. As an indispensable value for evaluating the quality of the paperboard, it is generally expressed as a link lash (according to the Ring crush… KSM 705 paperboard compressive strength test method).

In the present invention, adhesives (A) and (B) are applied to wetlands immediately after stratification, while the papermaking process is carried out on a paper machine, and immediately before going to a wet part intermediate body and a dry part. Reinforced corrugated core by spraying the surface and the back or toward the surface and toward the front or surface, using a plunger pulp, an air compressor, etc., about 30-50 cm away from the ground or behind the ground.芯 紙) to make.

Examples of the adhesive applied therein include gelatin, sodium silicate, CMC, methyl cellulose, chemical starch, vegetable gum, and the like. Etc.) Select one type or more according to the type of paper, and use an antifoaming agent in some cases.

The adhesives A and B which are spray-coated are the same or different from each other depending on the type.

The pH of the chemical liquid is 4-10, the viscosity is 30-150 CPS (25 ° C.), the spray pressure is 5-15 kg / cm 2, and the single spray coating amount is 158 / m 2 -308 / m 2. Next, the Example of this invention is given.

Example 1 When the material flows out of the long-term head box and reaches the wet 3m position, the adhesive A is sprayed into the wetland while adjusting the pressure by adjusting the lever of the sprayer at a height of about 40 cm from the gold mesh. The adhesive B is further sprayed by the same method as before before the easy peel travels and reaches the dryer.

Example 2 Adhesive Glue A was sprayed at 45 cm height from the gold mesh surface when the stock flowed out of the long-term Yankee-type head box and reached 3.5 m of wetted part. Spray in the same way.

Example 3, 2-8 pieces of round-bottom batters No. 1, 2 and 3 batters, respectively, after exiting the bolts and passing through the coach roll, adhesive A at the point of 30 cm of the base of the wetland. Spray each of them and spray the adhesive B at a height of 30 cm when the paper is driven to reach the end of the crimp portion.

Example 4: Two Yankee bats No. 1 The batter comes out of the first batter after passing through the bolts and sprays the adhesive A at a point of 30 cm from the bottom of the running wet land. Immediately before, spray adhesive B toward the stratum surface.

By using the reinforcement corrugated wick made by the above-described method is to call in a normal way in a whistle (糊 付 機) to make a double-sided corrugated cardboard.

According to the effect of the present invention, the spray-coated adhesive penetrates between the pulp, which is the paper, and is melted by heating in the dryer, thereby binding the fibers and the fibers, thereby binding the fibers without separating them, thereby increasing the strength by increasing the strength (剛度) Destructiveness is strengthened, and the amount of waste discarded due to cutting and breakage is extremely reduced.

130-140 g / m2 has 5-7 R.C.

170-180g / m2 has 14 R.C.

Double-sided reinforced corrugated cardboard manufactured by reinforcement corrugated cardboard according to the present invention

110-120g / ㎡ R.C. is more than 10

20-30 R.C of 170-180g / m2

As a result, the present invention can be assured that it is superior to the conventional one.

In other words, the corrugated cardboard made of reinforcing corrugated cardboard of the present invention has strength over the corrugated cardboard, even if it is a double-sided corrugated cardboard, and the use of the corrugated cardboard makes it possible to reduce the weight of the packaging and to ensure a significantly lower cost of the packaging cost and to compress the box Is 1.5-2 times, which can maximize the effect by using the minimum amount of raw materials, which can save raw materials, and the low cost of production cost is 5-20%, and it is possible to reduce the loading efficiency and space during transportation and storage. Economics will also increase.

In view of these points, consumer protection can be ensured and it can greatly contribute to the packaging of processed foods, fruits and vegetables, home appliances and appliance parts and heavy materials.

Claims (1)

Reinforcement cores, characterized by spraying and applying homogeneous and heterogeneous adhesives and strength-increasing agents to and on the surface and the surface of the wetland immediately before or after the material forms the strata in the paper machine. Manufacturing method.

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