loading

YUANYOU Committed to stable performance automatic PET bottle blowing machine production line since 1990s.

Blow Molding Machine Equipment|Blow Molding Machine Manufacturer|Plastic Blow Molding Machine|PET Bottle Blow Molding Machine1

The blow molding process is a two-way stretching process. In this process, the PET chains are stretched, oriented and arranged in two directions, thereby increasing the mechanical properties of the bottle wall, improving the tensile, tensile, and impact strength. Good air tightness. Although stretching helps to increase the strength, it should not be overstretched. The stretch-inflation ratio must be controlled; the radial direction should not exceed 3.5-4.2, and the axial direction should not exceed 2.8-3.1. The wall thickness of the preform should not exceed 4.5mm. The bottle blowing machine is carried out between the glass transition temperature and the crystallization temperature, and is generally controlled between 90-120 degrees. In this interval, PET behaves as a high-elasticity, rapid blow molding, and a transparent bottle after cooling and setting. In the one-step method, this temperature is determined by the length of the cooling time in the injection molding process for the PET bottle blowing machine, so the relationship between the injection and blowing stations must be connected. The blow molding process includes: stretching-blowing once-blowing twice. The three actions are very short, but they must be well coordinated, especially the first two steps determine the overall distribution of the material and the quality of the blowing machine. Therefore, it is necessary to adjust; stretch start timing, stretch speed, pre-blowing start and end timing, pre-blowing pressure, pre-blowing flow, etc. If possible, it is best to control the overall temperature distribution of the preform. Temperature gradient. In the process of rapid blowing and cooling, there are common problems and solutions for induced stress in the bottle wall. 1. Thick top and thin bottom: Delay the pre-blowing time or reduce the pre-blowing pressure to reduce the air flow. 2. The bottom is thick and the top is thin: opposite to the above. 3. There are wrinkles under the bottleneck: the pre-blowing is too late or the pre-blowing pressure is too low, or the blank cooling here is not good. 4. White bottom: the preform is too cold, too stretched, pre-blowing too early or pre-blowing pressure is too high. 5. There is a magnifying glass at the bottom of the bottle: too much material at the bottom of the bottle, too late pre-blowing, and too low pre-blowing pressure. 6. There are wrinkles in the bottom of the bottle: the temperature at the bottom is too high, the cooling at the gate is not good, the pre-blowing is too late, the pre-blowing pressure is too low, and the flow is too small. 7. The whole bottle is turbid: opaque and insufficient cooling. 8. Partial whitening: Excessive stretching, the temperature here is too low, or the pre-blowing is too early, or the stretch rod is hit. 9. Eccentricity of the bottom of the bottle: It may be related to the temperature of the preform, stretching, pre-blowing, high-pressure blowing, etc. Reduce the preform temperature, speed up the drawing speed, check the gap between the tie rod head and the bottom mold, postpone the pre-blowing, reduce the pre-blowing pressure, postpone the high-pressure blowing, and check whether the preform is eccentric. The company mainly produces fully automatic bottle blowing machines

There are a wide variety of which are scientifically tested to have positive effects on the ability to plastic blowing machine manufacturers. pet bottle making machine manufacturers bottle blowing machine is one of them.

We are a provider of a various number of services that include . Search our website by bottle blowing machine blwoing machine company product line or category to find what you are looking for.

There are many advantages associated with .

But we do think that reckoning with supply chains of bottle blowing machine is a really important step. Even super simple switches in material, or sourcing, or shipping, or worker benefits seems like good place to start.

A primary strategy is superior customer satisfaction. Yosion Machinery constantly analyzes market needs around the world to develop a full range of products for different use.

GET IN TOUCH WITH Us
recommended articles
Introduction to Injection Molding Machine

Injection molding machine is a manufacturing process for producing parts by injecting molten material into a mold.
From the moment a consumer picks up a bottle of their favorite beverage, to the moment they twist off the cap and take a refreshing sip, the design of PET preforms plays a crucial role in the success of the entire bottling process.
Advanced Software Revolutionizing PET Preform Design

In recent years, advanced software has completely revolutionized the way PET preform design is carried out.
As the demand for bottled beverages continues to rise, so does the environmental impact of the PET bottle blowing industry.
When it comes to the PET bottle blowing industry, there are a myriad of regulatory challenges that companies must navigate in order to remain compliant and successful.
When it comes to producing plastic PET bottles, selecting the right bottle making machine is crucial for achieving high-quality and efficient production.
Advancements in Plastic PET Bottle Making Machines: What’s New?

Plastic PET (Polyethylene Terephthalate) bottles have become a ubiquitous part of our daily lives.
Plastic PET bottle making machines have revolutionized the production process for plastic bottles, making it faster, more efficient, and cost-effective.
Is it Time to Upgrade Your Plastic PET Bottle Making Machine?

When it comes to manufacturing plastic PET bottles, keeping up with the latest technology and equipment is crucial for staying competitive in the market.
PET Injection Machines: Applications and Benefits

Plastic injection molding has become a widely used manufacturing process, especially in the production of PET (polyethylene terephthalate) products.
no data
YUANYOU is striding toward the world with a high-profile attitude, and customers around the world are constantly moving towards Yosion Machinery.
no data
Copyright © 2025 Yosion Machinery  | Sitemap
Customer service
detect