Design and forming process of the hottest carton

2022-10-20
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Carton design and forming process

carton is a kind of paper packaging. It has three major functions of packaging, namely, protection function, use function and promotion function. In addition, it also has good processing performance, and can be easily formed with the help of the gravity of the sample itself, and the forming and filling process is easy to realize mechanization, automation, high-speed and other advantages. The company is a super large construction profile enterprise in Southwest China, which is a recyclable "Green packaging", which does not pollute the environment, is widely used all over the world

cartons are paper packaging containers formed by folding and pasting cardboard, and most of the materials are thin cardboard. Due to its strength, the volume of cartons generally cannot be too large, and they are mostly used in the outer packaging of small and medium-sized commodities, such as medicine boxes, cigarette boxes, cosmetics and daily necessities packaging; The flexible structure of carton packaging, coupled with exquisite printing, can bring high added value to goods. It is a commonly used sales packaging

carton design principle

cartons are not only the packaging of goods, but also should be highly artistic, so they should be designed and manufactured according to the principles of science, reliability, beauty and durability. Designers should scientifically design the internal and external structure of the carton according to the characteristics, environment, user requirements and other factors of the packaged products, which should not only reflect the packaging, protection, convenience, display and display of the carton, but also consider the overall effect of the carton, structural modeling and personality of decoration design

when designing cartons, we should first meet the overall design requirements of cartons, that is, the main decorative surface of cartons should meet the opening habits of most consumers; Secondly, the relationship between carton structure design, modeling design and decoration design should be considered, that is, the structural design should reasonably design the carton cover, bottom, adhesive flap, dust flap and other components according to the characteristics of the packaged products, environmental factors and user requirements. It should not only meet the principles of overall design, but also coordinate with the requirements of modeling and decoration design; In modeling and decoration design, we should emphasize the display and display of carton packaging from the perspective of aesthetics. In addition, size and strength design is also an important part of carton design. It not only affects the appearance and quality of cartons, but also relates to production and circulation costs

carton type and structural characteristics

cartons can be divided into folding cartons and paste cartons according to their forming process

1. Folding carton

folding carton is usually a thin folding board (thickness of 0.3 ~ 1.1mm) after cutting and indentation, folded and combined into shape, and folded in a flat shape for transportation and storage before loading goods. The advantages of this kind of carton are low cost and circulation cost, suitable for large and medium-sized batch production, and many structural changes, but its strength is low

folding cartons can be divided into tube folding cartons, disc folding cartons, tube disc folding cartons and non tube non disc folding cartons according to their structure, among which tube and disc folding cartons are most commonly used

(1) tube folding carton

tube folding carton refers to that the cover of the carton is the smallest among all the box surfaces, and the volume of the carton is generally small, which is characterized by convenient loading and taking of the contents, and the cover should not be opened automatically. The box body of the tubular folding carton is formed by rotating each body plate (i.e. non cover plate and non bottom plate) successively at a certain angle with the intersection line of each two adjacent body plates (i.e. height dimension indentation line) as the axis until the equipment enters the normal working state

common tubular folding cartons, such as toothpaste boxes, have relatively simple sides, and structural changes mainly occur on the swing wings of the box cover and bottom. The box cover generally has plug-in type, plug-in type, lock mouth type, plug-in type, continuous swing wing folding type, adhesive sealing type, positive lift sealing type and other forms, and the box bottom has lock bottom type, self-locking bottom type, partition wall sealing type and other forms

(2) disc folding carton

disc folding carton refers to a carton with relatively small carton height and large load area at the bottom of the carton (compared with tubular folding carton). After the carton is opened, the range of contents that can be observed is large, which is conducive to consumers' selection and purchase. This kind of carton is mainly used for the packaging of shoes and hats, clothing, food, gifts and other commodities

the tray folding carton is a box type formed by folding a sheet of cardboard at right angles or oblique angles around. Its structure is shown in Figure 2. The box body is formed by two adjacent body plates (side plate and side plate) rotating a certain angle with the intersection of the bottom plate as the axis. Sometimes it is locked or bonded at the corner; If necessary, a single board of this box type can be extended to form a box cover

the difference from the tubular folding carton is that there is almost no structural change at the bottom of this box type. The main structural change is reflected in the position of the box body, and its overall structure is composed of box bottom, main side plate, aileron, box cover, etc

the most common disc folding cartons are shoe boxes. The main box cover structures include cover type, swing cover type, drawer cover type, plug-in type, lock mouth type, etc. the box body forming methods include folding assembly, side locking and corner bonding

throughout the structural characteristics of the folding carton, there is a certain degree of rotation in its forming process, that is, taking the intersection of two adjacent body plates as the axis, and the related body plates rotate at a certain angle to form, so the rotation angle( β) The determination of is a key factor in the structural design of folding carton. Set the forming angle formed by the adjacent two sides of the folding carton bottom (LID) as a, with α Indicates that the forming angle formed by the intersection line of the box body plate and the bottom edge line of the box is B, with γ 1、 γ 2, then the solution formula of rotation angle is:

β= 360°-( α+ ∑ γ i) σ in

formula γ I is the sum of all forming angles B at the rotating shaft

2. Paste cartons

paste cartons are another kind of cartons made by bonding and mounting the veneer materials and the base cardboard. After forming, this kind of cartons can no longer be folded into a flat plate shape, but can only be transported and stored in a fixed box type. It is more rigid than ordinary folding cartons, with good anti puncture and anti strike performance, but the production personnel have high labor intensity and low production speed, so the cost is high, so it is not suitable for mass production, and it is suitable for the packaging of valuable commodities. Paste carton can be divided into cover box, shake cover box, boss box, wide bottom box, drawer box, swivel box, etc. from the box structure

in recent years, in order to promote product sales and facilitate the use of consumers, in addition to the basic forming structure, cartons can also be designed with some local feature structures according to their different functions, so that they have specific functions, that is, the so-called functional cartons. Such as opening windows and setting handles on the box; A partition wall is arranged in the box to facilitate the pouring out of the contents of liquid, solid particles and powder, and some easy to open structures are designed at the box body

carton manufacturing process

the manufacturing process of carton varies due to its structure. There are two main processes

(1) folding carton production process

in this process, the processes that have the greatest impact on the quality of cartons are printing and die cutting. Poor printing quality affects the beauty and promotional function of cartons, while poor die cutting quality affects the precise molding of cartons, and even causes waste of raw materials. Therefore, in the production of folding carton, we should pay special attention to the manufacturing accuracy of printing plate and die-cutting plate

(2) box pasting production process (taking the tray carton as an example)

the process that has the greatest impact on the quality of the carton in this process is box pasting, that is, paste the face paper and the base paperboard into a box, which can be done by hand or on the carton pasting machine. It is often equipped with an automatic gluing machine. When pasting boxes, it is required that the corners and decorative horizontal heads should be firmly bonded; If the side force measurement system is not calibrated and adjusted, it is likely to cause error bars and internal traction in the test results, which should be flat and firm; After the side plug and cover paste are made, there is no paste, no bubbles, no wrinkles, smooth and smooth; The position of trademark pattern should be accurate; Cartons should be dry and tidy. Now many packaging enterprises paste boxes through automatic machine

author/Huang Lingge, liuxueying, Zhengzhou University

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