Chapter 5 Introduction to CAD of Paper Packaging Structure
Section 1 CAD Technology
CAD has the following four major functions:
a. Establish a geometric model;
b. Engineering analysis;
c. dynamic simulation;
d. Automatic drawing;
CAM is an integrated technology in product manufacturing and management.
CAD (Design Department)
Since the advent of paper packaging containers, due to its unique material structure mechanism, unique packaging function effects and wide applicability of economic benefits, it is now in various types of packaging containers, whether internal or external packaging or transportation, sales and packaging. The amount of use is second to none and has become a leader in the packaging family. Obviously, the development trend of the modern corrugated packaging industry and its technology will continue to increase in the direction of high efficiency, multi-functionality, environmental protection, and conservation of limited resources. The corrugated packaging technology will continue to improve and self-improvement, making corrugated packaging products. It has more social use value, and it also has the vitality of market competitiveness and continuous development of products. The ever-changing scientific and technological achievements provide very favorable conditions for promoting the development of modern corrugated packaging technology.
Section 1 Special Function Corrugated Cardboard
First, high-strength special corrugated cardboard
1 mixed paper corrugated board paper is the main material for the production of corrugated board
There is now a new technology for high-strength corrugated board made with mixed paper, which provides a very desirable new way to improve the performance of paper pull. The swollen paper originally developed by Japan's Lange Co., Ltd. is now on the market. It is a kind of corrugated paperboard made from a mixture of woody natural pulp and polyethylene hardener synthetic pulp. There are three kinds of swabs. The characteristics of RP mixed base paper are: its strength is higher than that of pure wood pulp base paper, and its water resistance and stretching stability are good. At the same time, it still has the air permeability and moisture permeability of ordinary base paper. It can be heated and shaped, and waste paper can be recycled and recycled. The cost is similar to that of ordinary base paper.
2 UPS Cohesive Corrugated Cardboard
The main advantages of UPS corrugated board are: high strength, low basis weight, and small packaging space.
The main advantages of UPS corrugated board are: high strength, low basis weight, small packaging space
UPS corrugated board production process is not complicated, it is the two (or three) ordinary corrugated paper bonded together, and then in accordance with the conventional corrugated board machine made of high strength UPS type corrugated corrugated board Cardboard, its composition
The concept of the strength of two layers of corrugated paper laminated together is not “l+l=2†but “l+1=4†or more. The secret of WPS corrugated board to increase strength is not due to the result of two layers of corrugated paper. It is based on the use of POWERBK-S, a powerful chemical agent developed by the Far East Company, as the bonding material for two layers of corrugated paper.
3 Braided composite corrugated cardboard The fiberglass woven mesh composite corrugated board developed by Canada's DOMTAR Packaging Company has a high tensile strength; it can be used in the manufacture of heavy-duty corrugated packaging containers for bulk goods. The manufacturing process of the braided composite corrugated board is quite simple, and a layer of glass fiber reinforced mesh film can be sandwiched together between the backing paper and the corrugated medium paper on a conventional corrugated board machine.
4 IF foil composite board
IF iron foil is a kind of corrugated paperboard composite material with special packaging function that has been successfully studied by Toyo Steel Co., Ltd. in Japan for many years. The manufacturing process is the use of electrode deposition method from the electrolyte containing iron components deposited into a very thin (0. 002 ~ 0. 005mm) pure iron foil, electroplating (zinc \ nickel or tin) after rust treatment IF roll iron foil products. The IF iron foil has good mechanical properties.
5 Corrosive chemical additives added to corrugated board are an effective way to strengthen the strength of corrugated board. At present, the corrugated paper packaging manufacturing industry in some countries attaches great importance to the development and application in this area.
The material, equipment, and process for the production of K-type corrugated cardboard from 6K corrugated board are the same as other conventional corrugated boards. The only difference is that the corrugated tooth height of the K-type corrugating drum is 6.6~7.7mm, which is more than A. It is approximately 50% higher than that of C, nearly twice as high as B.
7 Cross-Corrugated Corrugated Paper The advantages of traditional corrugated paperboards are that the vertical and vertical side-blanket strength is particularly good, and the straight-edge compression strength is particularly good. However, the lateral vertical side pressure and the planar pressure are much inferior. The criss-crossing corrugated paper can completely solve the paper board's unbalanced compressive strength.
8 Honeycomb Core Board The biggest advantage of honeycomb core board is that it has high plane strength, good hardness, and balanced stress. The packaging carton made from honeycomb core board has particularly good impact resistance, but its vertical strength is inferior to that of corrugated medium carton. The bearing capacity is much higher than that of corrugated cardboard boxes.
Second, preservation function of corrugated cardboard
1 Plastic film composite corrugated board Plastic film composite corrugated paperboard is a five-layer material with a preservation function of a single layer of corrugated board plastic film composite corrugated board preservation effect, mainly in the middle of the sandwich paper sandwich composite plastic film layer There are three kinds of plastic film materials that are commonly found in cartons made in foreign countries:
2 Aluminum film composite corrugated board Aluminum film used in composite corrugated board refers to aluminized film (PET), that is, aluminum film formed by combining polyethylene film with aluminum heat agent, and aluminum film composite corrugated cardboard. There are three ways to make it.
Preservation performance is good, the box surface to maintain the original cow paper cardboard
3 The packaging box made of foamed plastic combination corrugated cardboard with corrugated cardboard combined with foamed plastics not only has the function of keeping fresh, but also keeps heat, heat insulation, water resistance, and has good refrigerating packaging effect. Its combination
4 Silica Hybrid Liner Corrugated Paper The effect of its preservation is that the backing paper of the paperboard contains powders capable of absorbing ethylene gas. The powder is a porous type made mainly of silica and made of white silica. powder.
5 DNA Antimicrobial Preservatives Corrugated cardboard liners are coated with a layer of antimicrobial antiseptic called DAN. This preservative has no effect on food hygiene.
6 The surface of the far-infrared ray liner board is coated with a layer of ceramic which can effectively radiate infrared rays. When using, simply press the inner surface of the corrugated box to the length and width of the corrugated box to form the lining of the fresh lining, and pad the bottom of the box or cover the contents. The top of the material, it can play a role in preservation
Third, other special features corrugated cardboard
1. Fireproof corrugated cardboard researched by American Arnox (ARNOX) company. The fire-retardant mechanism of the fire-retardant corrugated cardboard completely depends on a flame-retardant chemical solvent with high fire resistance. The operation process of fire-retardant chemical agent treatment on corrugated cardboard is very simple. The first method is to prepare the base paper before making corrugated cardboard. First, it can be infiltrated with a fireproof chemical agent. Second, it is also possible to infiltrate the fireproof chemical solvent into the ordinary corrugated board or cartons that have been made. The fireproof performance of the corrugated board that has penetrated the fireproof chemical solvents has been formed, and the cardboard has been formed. The compressive strength will also increase slightly, with a burst resistance of 11.6% and a 13.1% increase in ring crush strength.
2. There are many ways to make waterproof corrugated cardboard in waterproof corrugated cardboard. The principle is nothing but the use of materials with water repellent properties applied to a certain part or all of the paper that forms corrugated cardboard to change the hydrophilicity of the paper so as to achieve waterproof and moisture-proof. the goal of. There are many kinds of these water-repellent materials, such as grease, resin, resin, glue, paraffin, and the like; the process of applying a water-repellent material can be mixed with water-repellent material in paper pulp to make a full-defense or surface layer when manufacturing base paper. Waterproof base paper can also be applied to the surface of the base paper in advance when a corrugated paperboard is manufactured, and a waterproof material can also be applied to the surface or the entire surface of a certain layer after the corrugated paperboard or cartons are finished.
3. Insulated Corrugated Paperboard The good thermal insulation of corrugated boxes is due to the special manufacturing process of corrugated cardboard CORFAAMS. CORFOAMS thermal insulation corrugated board is manufactured by injecting polyurethane foam in the corrugation gap between the cardboard backing and core paper, so that the polyurethane foam with thermal insulation properties is integrated with the ordinary corrugated cardboard, thereby reducing heat conduction. purpose
4. NOR-BOX Heat-insulated Corrugated Cardboard Norwegian NOR-BOX corrugated cardboard boxes heat-sealed with polyethylene film.
5. F-type Corrugated Cardboard HORWICH first developed an ultra-thin corrugated cardboard in Shanghai, which has a corrugation height of only 0.9mm, which is lower than that of the conventional E-type corrugated fiberboard.