Plastic Bottle Manufacturer -Plastic Bottle Forming Process

As a professional cosmetic bottle manufacturer, we know that plastic bottles are part of the rubber and plastics industry. Whatever plastic bottle is used, it must be formed. In fact, whether it is a cosmetic bottle or another plastic bottle, it is the same production method.

The molding process of plastic bottles is the process of making plastic products from polymers such as phenolic resins, urea resins or unsaturated polyester resins. Explained by plastic bottle manufacturers-its processing methods include compression molding, extrusion molding, injection molding, blow molding and calendering.

There are many ways to make polyethylene. The most common is to polymerize ethylene at a high temperature of 200 to 300 ° C and a pressure of 1000 to 2000 atmospheres. In polyethylene, no other substances are doped. The polyethylene thus obtained has a low density and soft texture, and has high stability to sunlight, air, moisture, and chemical agents, so no stabilizer or plasticizer is required, and most stabilizers and plasticizers are toxic Or highly toxic.

First, warm up
The preform is irradiated with a high
temperature lamp to soften and soften the body part of the preform. In order to
maintain the shape of the bottle mouth, it is not necessary to heat the preform
opening, so a certain cooling device is required to cool it.

Second, blow molding
In this stage, the pre-heated
preform is put into a prepared mold and inflated therein to blow the preform
into the required bottle.

Blow molding machines on the market are usually divided into
fully automatic and semi-automatic. The automatic blow molding machine combines
the two operations of bottle blowing through the operation of the robot, without
the need to manually put the preheated preform into the mold. The production
speed has greatly accelerated, and of course the price is higher than
semi-automatic.

Injection
Injection molding is also called injection molding.
Injection molding is a method of injecting a thermoplastic melt into a mold
under high pressure using an injection molding machine (or an injection machine)
to obtain a product by cooling and solidification. Injection molding can also be
used to form thermoset plastics and foams. The advantages of injection molding
are fast production speed, high efficiency, automatic operation and the ability
to form parts with complex shapes, especially for mass production. The
disadvantages are the high equipment and mold costs and the difficulty in
cleaning the injection molding machine.

Calender
Calendering is a process in which the resin is
processed (kneaded, filtered, etc.) into a film or sheet through the gap between
two or more opposing calender rolls, and then peeled from the calender rolls. ,
Cooling and forming method. Calendering is a molding method mainly used for
polyvinyl chloride resins, and can make films, sheets, sheets, artificial
leather, floor tiles, and the like.

Ningbo RuiChang
Commodity Packaging Co , Ltd  . is a    Plastic Bottle
Manufacturer   
from China. We manufacture and supply plastic bottle products that
are safe and environmentally friendly for cosmetics and daily use packaging. Our
products are exported to Europe and Southeast Asia, and have been well received
by customers. Click our website for more product details and information:
https://www.ruichangpacking.com