Innovation in the plastic packaging industry points the way for mold companies

Lightweight design

A large part of the cost of packaging products is on raw materials. Assuming that the cost of other production factors cannot be reduced, reducing the amount of raw materials used can effectively save production costs. Therefore, mold companies have an obligation to help customers reduce costs. Reasonable realization of production capacity and maximum efficiency.

Taking a bottle cap as an example, by changing the wall thickness of the cover, finely adjusting the shape of the buckle, etc., and repeatedly verifying on the mold, we have successfully reduced the weight of the 3025 cap to less than 1.8g. The 2925 cap can reach 1.2g, and the 38mm water cap can be made within 2g.

Shorten product molding cycle

Under the premise of ensuring the appearance, size and function of the product, the shorter molding cycle is always the goal that the mold factory is tirelessly striving for. The main ideas for shortening the product molding cycle are as follows:

According to the shape of the parts and products, the layout of the mold water path is reasonably designed to ensure the uniformity of cooling of each cavity product.

Try to approach the shape of the product, design the cooling water path of the mold core (cool with the shape), if necessary, use 3D printing technology to make the mold, to ensure the product is fully and quickly cooled.

Reasonable use of mold material to ensure rapid cooling of parts. The part of the top surface of the part that comes into contact with the product is usually the hot runner feeding position; the mold core is designed in the form of inserts, which are made of special materials to make the cooling effect better and improve the dimensional stability of the product.

Design for adjustable product thickness

For products with a torn structure, such as condiment caps, xylitol chewing gum lids, etc., the wall thickness of the tear itself is very thin and the functional requirements are extremely high (considering the consumer tearing Feel and strength, but also consider the sealing performance of the tear ring itself, too thin may damage the sealing of the cap, too thick may affect the consumer experience). The output of such fast-moving consumer goods is huge, and the requirements for the life of the mold are high, and generally require millions or even tens of millions of times. The mold has inevitable natural wear in the production process. To maintain the tearing function of the pull-tab products, we have specially developed an innovative mold design that can adapt to the nature of the mold in the production process. Wear condition to adjust the height of the mold, so as to adjust the thickness of the product to ensure the stability and reliability of the product quality.

Intelligent mold design

Reducing labor costs is a major means for modern companies to reduce costs, and reducing the post-processing of injection molding products is particularly important. For example, through mold structure and manipulator, the in-mold closing, in-mold folding, in-mold labeling, and in-mold cutting ring of the product realize unmanned operation and continuous production, which is an inevitable trend of modern enterprise development. Here, Jiuzhi Plastics Network focuses on the most widely used in-mold hemming and in-mold capping technology in food and beverage, pharmaceutical packaging and daily chemical industries:

In-mold hem: In the past, the product of this kind of reverse-folded structure, after being pulled out from the mold, its bent edge is opened into a horn, and needs to be folded by a special bending machine or manual tooling, which is low in efficiency and high in cost. . After optimizing the mold design structure, after the product is ejected from the mold, the in-mold hemming is realized, and the subsequent auxiliary process is no longer needed, and the efficiency is high, the cost is low, the safety is increased, and the in-mold disassembly is realized.

In-mold cover: By adding a combined cover manipulator outside the mold, the automatic closing action of the flip-type product is completed, the mechanism is simple and stable, the automation level is greatly improved, the manpower is saved, and the economic benefit is improved.

As the saying goes: a high-rise building from a high-rise floor, a set of precision multi-cavity injection molds, is not composed of countless details, this detail is each of the parts, each of its structural and detail features can be used to figure out The reason, they combine the entire idea of ​​the designer, and put high standards on the processing management of the processing equipment and personnel for each process.