Monthly Archives: September 2013

How to Choose the Preform Mould: To Start with the Hot Runner Nozzle

What are the effects of choosing the hot runner nozzle for our preform mould?
It can be mainly introduced from the following aspects:
1.The quality of the product: products of different weight have different requires for hot runner.
2.Plastic raw materials: different plastic raw materials have its processing of production, which will affect the selected hot runner systems.
3.Mould: what is the number of mold cavity? How is the material like? These all have a high relationship with the related hot runner.
4.Cycle period: a fast production cycle means a high requirement of nozzle.
5.Nozzle: the nozzle can be distinguished according to size, temperature distribution, physical characteristics, materials (copper, steel, etc.), and the ease of maintenance and price etc.
6.Temperature control: it is very necessary for each nozzle to connect to a relatively complex temperature controller.
7.Design: general speaking, all of us known that the design of products must go first. In order to guarantee the appearance of products smooth, the designers have to consider many factors of product mix design.


hot runner nozzle

hot runner nozzle

PET is a Common Seen Resign Material

PET is a common seen resin material in daily life. The melting point of PET is around 245 degrees Celsius. Existing methods for achieving high temperature applications with PET involve the complicated insertion of premoulded neck into the preform mould and the body is then moulded in PET. This in turn is blown into an oversize bottle which is transferred to an oven at 220 to 230 degrees Celsius for 30 seconds producing up to 40 percent crystallinity and causing the bottle to shrink to smaller than the final size. A second blowing step then gives a container of required dimentsions with high crystallinity and capable of withstanding 90 degrees temperatures.

PET bottles are with features of high strength, good transparency, non-toxic, anti-penetration, light weight, high production efficiency, so it has been widely used.

PET plastic molding process can be  plastic injection moulding, extrusion molding, blow molding, coating, bonding, machining, plating, electroplating, vacuum metallization, printing and so on.

PET bottles
PET bottles

Make Your Plastic Injection Products Better

Most Chinese injection mold companies are clustered around Guangdong province and Zhejiang providence. But, how can we choose the most suitable mold company from so many injection mold companies.

We can choose from the following aspects:

It is very necessary to have a correct mold flow analysis before the whole mold design. Second, you can start your design, which must be based on the customer’s actual requirements. A reasonable design will help a lot to the following workflow.

And also, a good precious mold tooling is the very key to the quality of injection mold products. Because if the injection mold have some problems, and that will directly reflected on the plastic products.

injection products
injection products

Some Keywords of Preform Mould

Most of us have benefited a lot from the pet bottles, and there we conclude out some key word about it.

There is no doubt be the first piece of plastic bottles is durable. Plastic bottle is usually hard now. Compared to the glass bottles, plastic bottles can last longer – it is not easy to break and to cause harm.

Beyond toughness and low costs, plastic bottle is also corrosion resistant. Most of them can be used for many years, even though the weather is rough, or the chemical corrosion.

The third is the lightweight and transparent. People could enjoy the convenience of plastic bottles – it is easy and handy to carry while traveling and you can see the whole contents inside clearly.

Last but not least, recyclable – most plastic wastes can be recycled. What should the preform mould maker to do is to try their best to control the material use, pollution and environmental protection.

How to Develop Preform Mould Industry?

The development of china’s preform mould material industry is lagged behind the downstream industries.

China’s market relies heavily on imported pet. As china’s economy grows, domestic demands for pet are increasing year by year.

Due to the price conduction, the development of its upstream industry-petrochemical industry has greatly decreasing, so does the pet preform industry-which is still in the downturn of Industry reshuffle.

In this situation, what should the pet preform mould maker do is to have a further investigation of this industry, and make up detailed planes for the demands of  international and domestic market.

A Brief Analysis to the Features of Die Casting Industrial Revolution

In the recent years, the third industrial revolution which centered on digital, intelligent and new energy has proceeded at a furious pace all around the world, and which also bring new opportunities for development of the die-casting industry.

With the improvement of die casting product quality demand in the market, the features of die-casting industry was presented in the process.

Now, the main features of die-casting industry are as follows:

First, information and digital lead the development.

Second is to enhance the strength of the intelligent equipment.

Third, the enterprises need to pay more attention of the complex talents and creative talents.

But, all these above are the sufficient condition of die casting enterprises, whether it can make great progress, that all depends on the firm’s own efforts.

Magnesium Alloy Will Be the Industry Upstart

Magnesium alloy die casting products have a huge realistic demand and potential demand, which means magnesium alloy will be the industry upstart in the future.

As we all know, china is rich in magnesium resource. Under this optimum condition, the incentive for developers to invest in magnesium die-casting will be inspired.

In recent years, magnesium die-casting grows quickly. The number of Die casting enterprises and R&D institution have expend to about a hundred. In such case, a group of high starting point and high-level enterprise have emerged.

That is to say, the situation of magnesium die-casting has been created. What we need to do is to transform resource advantage into economic advantage, that they can realize their wishes of die casting industrial development.

A Comparison of the Preforms and Bottles

Preform – as a semi finished product of blow molding plastic bottles, and there must exists a unified standard and rule for its making. General speaking, in order to make the factories in a convenient purchase, gram weight and bottle diameter of preform usually are uniformed,

For preform mould maker, preform, they could well-stocked according to market expectations and long-term production experience, unlike the shaped plastic bottles. Compared to the plastic bottle manufactures, it is undoubtedly that preform mould maker has the huge advantage in organizing production.

When it considered the selling season, preform mould maker had better to arrange production to meet the market characteristics in different seasons. For example, both spring and autumn are the shopping season for beverage bottle preform and water bottle preform.

About The Die Castings Applications

China’s die casting industry has gone through four generations in the past sixty years. Especially in the recent twenty years, die casting industry is entering a period of rapid growth-the production of which has kept an annual growth of 13 percent.

Now, aluminum alloy is the main types of die casting alloys, but, it can be expected that magnesium alloy die casting parts will have an apparent growth in the next few years.    

Die casting parts are widely used in automotive and consumer electronics.

1)  The rapid growth of automotive industry promises to enable die casting industry to have a further development, within the overall context of auto-lightening.

2) Consumer electronic industry has entered an overall universalizing period of smart phones and tablet computer. Because of the consumer demand of slim, light and large screen, these problems prompt the search for solutions, and people find that aluminum alloy and magnesium alloy castings can just meet all these requirements, and this new trend has already established.


A Brief Introduction of Cap Types

A preform mould maker will introduce the classification and profession to you here.

There are many types of caps in the market. But it can be roughly divided into some classifications of wine bottle caps, beverage bottle caps, cosmetic bottle caps, food bottle caps, and medicinal bottle caps, etc. each category have its own requirement in the way of production.

The main kinds of material of wine bottle are aluminum and plastic, and developed toward the purpose of theft-proof and counterfeit-proof.

While for cosmetic bottle caps, because of the structure of the bottle for daily use, the usage of butterfly cover and spray are most common in our daily life. An experienced and reliable manufacturer is particularly important, or it is very easy to appear quality problems of sealing.

There is no doubt that every country has strict restriction on the safe level of medicinal bottle caps, from producing to consuming.