ã€Chinese Packaging Network News】 Sealing also known as closed, sealed, refers to the packaging containers installed products, in order to ensure that the contents of the goods in the transport, storage and sales process remain in the container, and to avoid the pollution of the various Closed process. There are many different methods and materials used in packaging and sealing, such as adhesive caps, heat seals, and seals. Sealed packaging is a relatively complicated process technology. Designers must consider many factors when designing sealed packaging.
Sealing is the most fundamental and important function of any package. It ensures that the article is effectively protected from moisture and isolated from the air. The literal meaning of the word “sealing†usually means that the packaging inside the packaging container cannot be exchanged with anything outside. In fact, there are few absolute sealed packages. Almost all packages are sealed without exception, and successful packaging always depends on the effectiveness of their sealing performance. The reason why glass bottles can store products highly sensitive to humidity for a long time depends entirely on the effective sealing performance of the glass bottles themselves. If there is a deviation in the size of the sealing cap, if a high permeability, low barrier type material is selected for casting, the glass bottle will lose its sealing function and become useless. Sealing technology is the basis of sealed packaging. The packaging is designed to be even better. If the sealing process is not up to standard, the sealing of the package will be lost.
easy to use
Convenient function is one of the three major functions of commodity packaging. Convenient functions include convenient production, convenient storage and transportation, convenient display and sales, convenient opening and use, and convenient handling. Transport packaging should be easy for retailers to open, and sales packaging should be convenient for consumers to open and use. Like transport cartons with sewing thread opening, cartons sealed with tape and cans are easy to open. Easy to use means to convey to consumers the methods and precautions for using a product in a concise language or diagram. In daily life, you often encounter difficulties in opening food packaging. For example, in metal canned food, there are many similar problems, and when the package is opened, it may cause harm to the human body, such as scratching, cutting hands, etc. Plastic food bag packaging also has similar problems. Many people have embarrassed situations when they are traveling or at leisure because they do not carry the opening tools. Such packages have caused many inconveniences to consumers. In addition, such difficult-to-open packaging is also a threat to the hygienic condition of the food, such as the tearing of the composite plastic paper resulting in contact of the printed material with the food. At the same time, once such difficult-to-open packaging is opened, there is also the problem that it cannot be re-sealed, resulting in food contamination. However, with the improvement of the process and the renewal of materials, the easy-to-open and easy-to-seal packaging containers have been rapidly developed with their ease of use. On the one hand, past tinplates were replaced with easy-openable and easy-to-seal materials such as composite plastic films, aluminum plates, etc.; on the other hand, past cans and closures were replaced with cans, ziplock bags, easy-open cans, and rotating glass bottles. Glass bottles and so on. In addition, a packaging company in the United States designed and produced a pull-top cap to meet the requirement that athletes drink without having to stop during exercise. The bottle cap is designed to suck the bottle mouth and clamp it on the water bottle clip rack of the bicycle for consumers to drink while cycling. A Canadian company that has long been engaged in the processing of meat products has developed a new polyester packaging with a thermoformed polyvinylidene chloride co-extruded film seal at the top so that consumers can open the package immediately without any difficulty and enjoy the freshness Delicious meat food.
basic requirements
Food hygiene as a basic requirement for food packaging not only means that the food is not affected by external factors before reaching the consumer, but also that the packaging can still maintain hygiene when the food is consumed (non-disposable). Food packaging is required to have repeated airtight structures. Whether it is paper or plastic, most of the bag-type structures have the common shortcomings in terms of hygiene and safety. That is, once sealed, the entire bag of food must be consumed at one time, which is difficult for most food packages. Do it. Some foods on the market are packaged well. For example, the packaging of Polly Seaweed uses a re-sealable, zippered structural plastic bag that can be repeatedly opened and closed several times, resulting in relative health and safety protection. .
Safe packaging
The proper definition of child safety packaging is: “The packaging of dangerous goods such as medicines, household cleaners and pesticides cannot be opened by children, but it must not interfere with normal adult use.†There are two international standards for child safety packaging. (iso).
The EN 28317 standard, established in 1985, applies to packages that can be re-closure after opening, ie containers with lids containing large doses of the product, requiring repeated switching. En 862 introduced in 1997
Standards apply to single-use packaging, such as the blister packaging on tablets that are commonly used. Once the packaging is damaged, the product is removed.
Product evaluation:
It is crucial to fully understand each product and assess its possible impact. This influence involves not only one aspect of ingestion but also the impact on the skin, eyes, etc. The length of time that children use to open the product must also be taken into account. If a drop of bleach splashes on a person's face, the first reaction for an adult is to quickly wash it off with cold water, minimize its damage to the skin, and prevent the skin from turning red briefly. Children's reactions are different, which means that the same drop of bleach will remain on the child's face for a long time and cause longer-lasting damage. Therefore, an objective and comprehensive assessment should be conducted and reasonable sealed packaging should be used to ensure the safety of children.
The packaging design of the product not only provides a legal way to obtain the goods, but also makes the use of the product more effective and safe by sealing the dose control function of the container. This is particularly important in the pharmaceutical packaging. In addition, the measurement and measurement function of the product provides additional functions for products that only have a dose control function by setting different levels of usage. There are numerous types of measuring instruments, such as measuring cups and dry-cleaning measuring cups that are self-provisioned. They simply perform accurate metering functions; but for highly complex metering systems, such as respirator and self-injectable insulin, Users need to be used with caution, and the latter's design requirements on precision are significantly more severe than the former. For many dose control and metrology systems, the primary consideration in designing is to understand the natural properties of the product and to ensure that the properties of the product do not change during each step of batching. At the same time, the design of the sealed container must also take into account the normal changes in the product. If the product is agglomerated due to contact with air, the anti-condensation device should be taken into consideration in designing to maintain the original state of the product and allow consumers to be satisfied in the aesthetic psychology. Before the product is not used up, the container nozzle that can be closed can effectively seal the product and ensure its quality does not fluctuate, thus avoiding repeated purchases by consumers. Finally, give a brief summary of the guidelines for the use of dose control and metrology functions for packaging: First, be as simple, convenient, and clear as possible; second, the corresponding pictograms are an ideal choice; and, if Too cumbersome and complex, it should be marked on the seal to help consumers use it properly.
Material selection
Economic rationality is the basic basis for choosing sealed packaging materials. In the selection of sealed packaging materials, not only the quality of the packaged products should be considered, but also the value of the packaged products should be considered. For high-end products or products with high added value, sealed packaging materials with high prices and high performance should be used. For moderately priced products, in addition to aesthetic considerations, more consideration should be given to economy, and the materials used should be equivalent. For products with lower prices, while ensuring their safety and maintaining their protection functions, they should pay attention to affordableness and use lower-priced sealed packaging materials.
The selection of sealed packaging materials should fully consider the circulation conditions and climatic conditions. The circulation conditions largely influence the choice of packaging materials. The circulation conditions include climate, mode of transportation, circulation objects and circulation period. The climatic conditions mean that the sealed packaging material should adapt to the temperature, humidity, temperature difference, etc. of the circulation area. The choice of sealed packaging material should also depend on the estimated shelf life of the package, the need to reopen it after opening, and the product image requirements. Certain properties of packaging materials are known to us. These properties and data have a great guiding role in the selection of materials. If the design of a sealed package is to be reused multiple times, the flexibility of the plastic material becomes very important, especially for that type of pop-up lid and integrated hinge cover. The choice of packaging material and decoration will also directly affect the image of the product in the market, so we often need to consider the decorating effect of the material.
The environment is also another important factor that the designers have to consider. Under the premise of satisfying the product requirements, materials that do not cause pollution to the environment and are easily handled by packaging waste should be selected as much as possible.
application
Sealed packaging technology is applied to the packaging of almost all commodities, and plays a very important role in the packaging of commodities. For example, oxygen-proof packaging, vacuum packaging, etc. are inseparable from the sealed packaging technology, and must be sealed. For this reason, it is necessary to carry out research and analysis on many considerations of sealed packaging design.