​How to choose the appropriate packaging color box?

Color box packaging has more advantages than wooden box packaging, woven bag packaging, cloth bag packaging and plastic box packaging, and can appear in various forms according to different packaging products. So when consumers choose packaging color boxes, what kind of packaging color boxes should they choose? To choose the appropriate packaging color box, you should understand the following aspects.

1 Materials used in color boxes

Color boxes can be divided into corrugated color boxes, single-layer cardboard boxes, etc. according to different materials. Corrugated color boxes are the most commonly used. Corrugated color boxes are divided into single-layer, three-layer, five-layer, seven-layer, eleven-layer, etc. according to the different layers of cardboard. Three-layer (single pit) and five-layer (double pit) corrugated color boxes are the most commonly used. Each layer of cardboard is composed of inner paper, corrugated paper, core paper, surface paper, etc. from the inside to the outside. The structure is shown in the figure.

The inner paper is made of tea board paper, the top paper is made of kraft paper, and the core paper is made of corrugated paper. Tea board paper is very soft, grayish white, rough in surface, low in price and light in specific gravity. Most kraft paper is made of pure wood pulp and has the advantages of pressure resistance, tear resistance, puncture resistance and good water resistance.

Domestic corrugated paper is mostly made of semi-chemical pulp or waste paper pulp, and is also made of mixed pulp. The corrugated wave shapes mainly include V-shape, U-shape and UV-shape. V-shaped corrugated paper has high plane compressive strength, but poor cushioning performance, and is not easy to recover after being deformed by impact. U-shaped corrugated paper is firmly bonded and has a certain degree of elasticity. When impacted by external forces, it is not as fragile as V-shaped, but its plane compressive strength is not as good as V-shaped corrugated paper. Shaped corrugated paper; UV shaped corrugated paper not only has high plane compressive strength, but also is elastic.

Three-layer and five-layer UV-shaped corrugated color boxes are more widely used. The following table shows the appropriate types of corrugated color boxes that can be determined based on the maximum overall size of the box and the maximum mass of the contents for reference.

Seven-layer and eleven-layer corrugated cardboard are mainly used to make packaging boxes for large products such as mechanical and electrical products, furniture, motorcycles, etc. They have super compressive strength and good buffering properties.

2. There are many structural types of

color boxes. According to international standards, the common basic box types include slotted color boxes, nested color boxes, folding color boxes and combined box color boxes; in addition, there are New non-standard box type.

(1) Slotted color box. The slotted color box is currently the most widely used color box. It is composed of one or several pieces of processed corrugated cardboard that are stapled or bonded together. The bottom and top flaps form the bottom and lid of the box, namely the lower swing cover and the upper swing cover, which can prevent items from leaking from the bottom. The advantage of this type of color box is that it can be folded flat during transportation and storage. It has the advantages of small size, easy use, sealed and dust-proof, and clean inside and outside.

(2) Fitted color box. The nested color box is composed of one or several pieces of processed corrugated cardboard. Its characteristic is that the box body and the lid are separated. They are nested during use and have good strength and compressive strength. The advantages of this type of color box are that it is easy to pack and seal, the goods are not easy to fall off after being loaded, and the overall strength of the color box is higher than that of the slotted color box. The disadvantage is that it is large in size after being assembled and is inconvenient to transport and store.

(3) Folding color box. Folding color boxes are also called special-shaped color boxes. They are usually formed from a piece of corrugated cardboard through indentation and die-cutting. The bottom, sides and lid of the color box are formed by folding without stapling or gluing. The advantage is that the color box is small in size after folding and easy to transport and store.

(4) Combined color box. Combination color boxes are composed of two or more basic box types, which can be combined according to the characteristics of the goods and packaging requirements.

(5) New non-standard color box. The new non-standard color boxes are mainly rolled color boxes, separate color boxes and triangular prism color boxes. Roll-wrapped color boxes are made by the user using an automatic packaging machine after the color box blanks are made in the color box factory. After placing the contents on the color box blanks, they are then rolled into boxes. The advantage of the rolled color box is that it uses less material, the color box is tightly attached to the contents, and it can also achieve high-speed automation. Separate color boxes can use various auxiliary materials to combine small boxes on the basis of traditional standard boxes. They can be divided into two or more during the circulation process, mainly solving the problem between mass production and small batch sales. contradiction. The triangular prism-type corrugated color box is a box body and a corner lining formed on one page. The four corners of the corrugated color box form a triangular prism or right-angled column structure, thereby increasing the compressive strength by 20% to 50%. Triangular prism color boxes are divided into two types: tray type and sealed type, and there are a variety of box types to choose from.

Whether it is a standard type or a new non-standard type, the commonly used sealing methods include adhesive sealing, tape sealing, interlocking sealing and U-shaped nail sealing.

3 Quality inspection items of color boxes

(1) Appearance inspection. The patterns and text printed on the color box must be clear and correct, with consistent depth and accurate positioning.

The indentation line width of a single corrugated color box shall not be greater than 12mm; that of a double corrugated color box shall not be greater than 17mm. The fold line should be centered, and there should be no defects such as broken lines, heavy lines, cracks, etc. There should also be no redundant indentation lines on the box. The knife edge should have no obvious burrs, the tissue paper tear at the cutter's incision should not exceed 8mm from the edge of the box, and the diameter of the hole in the stacked corner after the box is formed should not exceed 5mm. Box nails should be made of coated low-carbon steel flat wire and should not have defects such as rust spots, peeling, and cracks. The spacing should be uniform, the distance between single nails should not be greater than 55mm, and the distance between double nails should not be greater than 75mm. The color box is supported and formed. After the swing lid is opened and closed 270° three times in a row, it is required that there should be no cracks in the top paper and inner paper. The width of the overlapping tongue is 35mm-50mm. The box nails should be nailed along the center line of the overlapping tongue, arranged neatly, and the deflection should not exceed 5mm. The width of the adhesive overlap tongue should not be less than 30mm. The adhesive should be applied evenly, fully and without overflow. The tissue paper should not separate when the adhesive surface is peeled off. The box paper must not be spliced, missing materials, wrinkled, exposed, glue leakage, etc. The paper in the color box should not be spliced more than twice, and the distance between the splicing joint and the indentation line of the rocker cover should not be less than 30mm. The moisture content of corrugated color boxes should be controlled within 8% to 16%. The maximum deviation of the dimensions of the cabinet and the single limit should be controlled within -2mm-5mm.

(2) Performance parameters. The performance parameters of color boxes mainly include edge pressure strength, bursting strength, puncture strength and compressive strength. Only when these main performance parameters meet the national standards can the color box be considered qualified. That is, a batch of qualified color boxes should be given their performance parameter values for consumers' reference.

4 Choose the color box reasonably according to the product characteristics

(1) Choose according to the weight and size of the product. For lighter and smaller products, you can choose single-layer cardboard boxes, which can not only play a packaging role, but also reduce packaging costs; for larger or heavier products, such as home appliances, computers, auto parts, etc., choose three-layer cardboard boxes. Or five-layer corrugated color boxes; products that are huge or very heavy, such as washing machines, electric vehicle color boxes, etc., need to use seven-layer corrugated color boxes.

(2) Choose according to whether the product requires exquisite color box printing. If the product is small and requires exquisite packaging appearance, you need to choose high-end gift cartons. The facial paper is made of white board paper or kraft paper, which is printed by offset printing or laminating. This kind of packaging greatly enhances the quality of the product. For example, the above-mentioned cartons can be selected for tobacco, alcohol, food, high-end gifts, etc. If the product's appearance requirements are not very strict, it is recommended to use non-laminated watermarked corrugated color boxes, which can reduce costs. For example, express color boxes, fruit color boxes, etc., can all use watermarked color boxes.

(3) Select according to whether the product requires double-layer color box packaging. If the product requires double-layer color box packaging, that is, the large packaging box contains multiple small carton packaging, regardless of the product's appearance requirements, the outer packaging box must use a simple watermarked color box, while the inner packaging box should be different according to needs. paper box. For example, medicines are generally packaged in double-layer color boxes.

(4) Select according to the storage and transportation form of the product. If the product encounters special conditions such as moisture, freezing, and high temperatures during transportation, special packaging boxes are required. For example, when transporting quick-frozen food, you will encounter moisture and freezing conditions. In order to prevent the color box from being penetrated by moisture and reducing its strength, you need to use a coated color box. If you encounter high temperatures during transportation, avoid using laminated color boxes. If you need to print color boxes, try to use ink printing to prevent high temperatures from causing fires.