When you see a few defective parts released from the Pet Preform Mould, you realize that you will have to stop production... moreWhen you see a few defective parts released from the Pet Preform Mould, you realize that you will have to stop production and find out what the problem is. This is a terrible feeling. Injection molding defects are certainly not uncommon, but they have not made them easier to handle – especially when QA waits, order queues, and delivery deadlines are imminent.
In the action of processing a two-color Pet Preform Mould, anamorphosis generally occurs. Although the band-aid to this... moreIn the action of processing a two-color Pet Preform Mould, anamorphosis generally occurs. Although the band-aid to this botheration has been solved
Very simple, how to operate? We would like to acquaint the afterward points.
The Pet Preform Mould is bogus by Jilian Artificial Cast Co., Ltd. Our branch has abounding years of acquaintance in... moreThe Pet Preform Mould is bogus by Jilian Artificial Cast Co., Ltd. Our branch has abounding years of acquaintance in accomplishment artificial alembic molds.
We can aftermath a array of pet allot molds, such as disposable thin-walled aliment containers, bake aliment containers, arctic aliment containers and circadian aliment containers. We are admiring to architecture and accomplish alembic moulds according to chump requirements. .
Before we attending at some of the items that should accomplish up any antitoxin Pet Preform Mould aliment checklist, let's... moreBefore we attending at some of the items that should accomplish up any antitoxin Pet Preform Mould aliment checklist, let's yield a abrupt attending at some of the problems that can action afterwards aliment and why they are important.
Mold aliment problem
Parts do not accommodated specifications: There are abounding cast problems that aftereffect in locations that do not accommodated specifications: actual balance in the mold, rust, cracks or added cast damage, and air or gas central the mold. Alone locations beggarly added assembly cycles, so it's important to ensure that superior charcoal high.
Workers accomplish antitoxin cast aliment Early cast failure: Neglecting baby problems in antitoxin cast aliment and analysis artlessly agency that a big botheration will action anon - it may accident your cast and may not be repaired. Even if accident can be repaired, these aliment can be cher and aftereffect in added downtime.
Machine damage: one of the affliction cases? The cast fails during the assembly aeon and amercement the machine. In this case, your aliment costs will acceleration dramatically, and draft issues with aliment or replacements can accept a huge abrogating appulse on your capacity. less
Because PET macromolecules contain lipid groups and have certain hydrophilicity, they are very sensitive to water when PET... moreBecause PET macromolecules contain lipid groups and have certain hydrophilicity, they are very sensitive to water when PET is used to make Pet Preform Mould. If the water content is not controlled, it will eventually make the products crisp. Become unqualified and the quality is not good. The drying temperature is 150 degrees Celsius and exceeds 4 hours. The temperature is usually 170 ° C and 3-4 hours. Air can be used to check if the material is completely dry.
The proportion of recycled materials should not exceed 25%, and the recycled materials should be thoroughly dried.
2, choose injection molding machine
Since PET has a stable melting point and a high melting point in a short time, temperature control is selected, and more self-plastic injection molding systems have less friction heat, and the actual weight of the product (outlet) is not less than 2/3 of the number of injection molding machines. Based on these requirements, Ramada has developed a series of small and medium-sized PET special plasticizing systems in recent years. The clamping force is greater than 6300t / m2.
3, mold and gate design
PET preforms are typically molded using hot runner molds. It is preferable to provide a heat shield between the mold and the injection molded plate to a thickness of about 12 mm, and the heat shield can withstand high pressure. Exhaust must be sufficient to avoid local overheating or breakage, but the exhaust depth is generally not more than 0.03mm, otherwise it is easy to produce flash.
4, melting temperature
Measured by aerial shot. The difference of 270-295 degrees, the enhanced grade GF-PET can be set to 290-315 degrees and the like.
5, injection speed
In general, the injection speed is fast and prevents premature coagulation during injection. However, the speed is too fast, the shear rate is high, and the material is brittle. The lens is usually completed in 4 seconds.
6, back pressure
The lower the better, to avoid wear. Generally no more than 100bar. Usually not necessary to use.
7. Retention time
Do not use excessive residence times to prevent molecular weight loss. Try to avoid temperatures above 300 degrees Celsius. If the stop time is less than 15 minutes. For empty processing only; if it is more than 15 minutes, use viscosity PE cleaning and adjust the cylinder temperature to PE temperature until it is turned on.
8, matters needing attention
The recycled material should not be too large, otherwise it will easily produce a "bridge" and plasticizing effect on the material.
Nowadays, many China Pet Bottle manufacturers have realized this problem. They have become very noticeable in the process of mold making. The molds produced are low and uniform in temperature, fast in cooling, less in crystallization, and transparent in products. It is more popular with customers in the world market. less
I believe that everyone is not unfamiliar with PCV (vinyl chloride), especially rigid PVC. It can be said that this is the... moreI believe that everyone is not unfamiliar with PCV (vinyl chloride), especially rigid PVC. It can be said that this is the most common material in the plastics processing industry, and it is mainly used for pipe fittings. The high quality PVC pipe fittings produced by China mould makers have been favored and loved by customers all over the world.
Plastics are a controversial material: they are inexpensive to produce and easy to use, so there are more plastic water... morePlastics are a controversial material: they are inexpensive to produce and easy to use, so there are more plastic water bottles on the market than there are eyes. But it can cause damage to the environment. Some of the arguments about materials are not entirely based on facts, so understanding the life cycle of plastic bottles can help clarify lies. Next, take the production and sales of China Pet Bottle as an example to bring you to understand its impact on the environment.