How To Make Water Bottle Cap

If you feel thirsty, you will take a bottle of water to drink. When you unscrew the water bottle cap, have you noticed the lid size and design? Are you interested in how to produce the bottle lid?

Water Bottle Cap Mould

For the plastic water cap, there are two molding ways, one is by the injection molding, and another one is by the compression molding. Both two molding solutions for the plastic lid production are high efficiency to manufacture qualified water caps. Compared to the compression molding, plastic injection molding way could get more stable quality caps with multi-design solution.

Sino Holdings Group is Chinese famous plastic injection mold and plastic injection moulding machine manufacturer, we could make plastic water cap mould and high speed cap injection molding machines. With combined technology, we are experienced in supplying plastic cap production line include water cap mould, cap injection machine, relevant auxiliary equipment, installation and training service.

Sino has rich experience for multi-cavity water lid mould for 4 cavities, 8 cavities, 16 cavities, 24 cavities, 32 cavities, 48 cavities, 72 cavities …We will recommend suitable cavity for customer based on hourly capacity demands. Our cap mould use stainless steel S136 made by Stavax in Sweden with interlock type insert design for core and cavity. With optimized cooling system, we could get the cycle time within 12s for water cap mould with slides.

For multi-cavity cap mould, we could designed the mould without sliders, we will supply cap slitting machine to get the thief ring cutting.

If you have plan to invest new production line for water caps, welcome to contact us. We are ready to supply high quality cap molding production line with one door to door service, thank you!

How To Choose PET Production Line Device

When you decide to make water bottle project, do you think that buy one suitable set of injection molding machine is ok?

In fact, a PET bottle perform production line is made up by several device. PET injection molding machine is the main equipment, the line also need necessary auxiliary machine. Now we share below points for you to select PET production line machine.

PET is a special material, it’s generally used as raw materials for plastic beverages bottled. But PET is different from normal PP material. PET have large specific heat capacity, so it required high molding temperature. In order to make the temperature easier to reach, we will dehumidifier and dry the original material before injection.

PET Bottle Perform Auxiliary Equipment

 1.       PET dehumidifier machine

In order to dry the material fully, material dehumidifier is important step before production.If the PET material is not completely dried, the surface of bottle preform will looks blurry. So dehumidifier machine is a vital equipment for PET bottle perform production line.

In general, most PET perform mold is multi-cavity. Before the machine model choice, we should pay attention to the actual weight of bottle perform and hourly consumption. 

Total hourly consumption= (3600/cycle time)* perform weight*mold cavity

For better stability, the theoretical dehumidifier weight of machines should be 1.35 times at least of actual consumption.

2.       Air Dryer

Hot air is used to dry the wet materials that due to moisture absorption during packaging, transportation and recycling cycles. The air dryer model should depend on the injection machine tonnage and hourly consumption. Material loading capacity of dryer equipment also need bigger than the hourly consumption.

3.       Auto loader

When the PET material finished dehumidifier and dry, the auto loader will put it on injection machine for manufacturing. But the points is very important, the pipe of the loader should be high temperature resistance. Ordinary pipes will melt and affect daily production.

4.       Water chiller

Typically, PET bottle perform mold is made by through-hardened steel S136. Once the mold put on machine for mass production, you must to connect water pipe for cooling, otherwise the mold steel is easy to broken.

Water chiller play the role of cooling and shorten the cycle time. The model of chiller should matched with PET injection molding machine tonnage, you could ask the supplier for recommend.

In conclusion, the above four kinds of auxiliary equipment are necessary for PET bottle perform project. Others machine such as mixer, crush, air compress is decided by your demand. If you are not experienced, you can ask the supplier for help and give you suggestion of PET perform device.

Sino Holdings Group is Chinese famous plastic injection molding machine manufacturer. We can offer customer PET perform production line turnkey solution, including injection machine and auxiliary equipment. Please contact us if you are interested.

How To Make PET Water Bottle

Every day we need to drink a certain amount of water, and we will come into contact with the water bottle. In other words, it’s very commen in our daily life, we can see the PET water bottle at any time and at any place. But do you know how to manufacture the bottle? What the key steps? And what device will be used?

First of all, you should have a rough concept. The water bottle is made in two key steps and two different crafts. The first process is making PET bottle preform by PET injection molding machine, then the second step is blowing water bottle shape by the blowing device.

PET Bottle Preform Solution-Sino Mould

1. PET Bottle Preform-Dakumar PET Injection Molding Machine

PET preform is the basis of the water bottle. The weight, stretch and transparency of the pet preform will affect the bottle effect. So if you have idea to invest the bottle project, you should make sure what volume of bottle you want to produce, 500ml, 1000ml or 2liter. Bottle volume will affect the preform thickness, weight and cycle time. Generally, the larger capacity, the thicker thickness, the larger weight, and the longer cycle time. Beside, most of PET preform mold is multi-cavity. Before inquiry, you’d better to know hourly capacity, supplier need the info to recommend mold cavity and injection molding machine tonnage for you.

2.  Final Water Bottle-Dakumar Blowing Device

Blowing Device is made up by blowing part and heating oven. Before the blowing, you have to put the PET bottle preform into oven for heating. Then take it out, and blow the preform to final bottle. When you choose the bottle blowing device, please offer the neck diameter and hourly output to supplier, he will give you most suitable and professional suggestion.

Sino Holdings Group is Chinese famous plasticinjection molding machine manufacturer. Our company have been on research, development and manufacture for multi-cavity PET perform mold for 20 years. We not only offer you PET preform mould, but also provides technical supports and turnkey solutions for high-capacity water bottle production lines. Welcome to contact us for further discussion.

Maintenance Plastic Injection Mould

In order to ensure the plastic injection mould work normally, smoothly, lower trouble and prolong the using life of machine, user must note to maintain the mould during everyday use.

Sino has rich experience in how to maintain plastic injection mould, since we are not only Chinese famous injection mould supplier, but also injection molding company. We know every detail of mould and molding process so had accumulated rich experience in maintenance plastic injection moulds. Below are our common methods, for your reference:

After finishing mass production, we need to check the mould in a complete inspection.

1. We should check and clean both parting surface, ensure that the cleanness of the mould.

2. Check the mould runner to ensure there is no defective material in the runner.

3. Clean venting-groove.

4. Cleansing cooling channel with PURE & sanitary Liquid, then pulling away leftover by air gun & drying channel via SIROCCO.

While in the daily maintenance, we also need to check the whole parts of the plastic injection molds, like the safety pin, safety screw, side guard and so on.

1. Check and test cooling channel on airproof guard.

2. Measurement of heating system under H.R. Instruction.

3. Ensuring Hydraulic C. moving under proper Conditions and w/o Oil-leak Problem.

4. Adding enough Lubricant for smooth core pulling movements.

5. Make sure lubrication of the sliding mold parts.

6. Measure hydraulic system's pressurization.

Mould storage: after all techniques finished, physical dryness &antirust treatments are required according. Finally, fixing & storing mould under dry conditions.

Please keep in mind if we keep maintain well of the molds, the mold will become the longer life. If you are newer investor in plastic injection industry who is not professional in such industry, please kindly contact us when you have any problem, we are glad to reply you and help you with your business. 

PET Preform Mold

Sino package workshop have rich experience in PET preform mold manufacture. We have been on research, development and manufacture for multi-cavity PET perform mold for 20 years. Till now we have shipped more than 6000 sets of PET preform molds to our customers. And also we got lots of positive feedback. Customers are highly recommend of Sino mould.

1.       Material Choosing

For the core&cavity steel, we use S136 stainless steel, original imported from Sweden, it makes your mould maintenance very easy because no need to worry about rust issue even for many years production.

2.       Design

For our bottle preform molds, all the cavity inserts are independently inserted, all the inserts are interchangeable, if any parts damaged, you can easily replace it with new parts. Each mould will work for many years, but sometimes it will happen that core&cavity may broken during production. So its will be very easy to do maintenance

3.       Hot Runner System

We adopt shut off hot runner system for our PET preform moulds. So the preform produced by our moulds will be tail free, no need to cut the tail by hand. And the heating elements we are using are made from Germany.

4.       Cooling System

Our mould adopt integral cooling water channel system. You can see these two big water nozzle on the top. You only need connect cooling water to these two nozzle, which make it very easy you. Also the cooling effect is improved by this way.

5.        Valve Gate System

In new generation preform molds pneumatic activated valve gate system is used. Here, the most important point is standardization of the valve gate pins.

Time is the biggest cost. For the water bottle market, it is always keeping popular, if you have the idea, why not try to learn in advance? So one day, you can start quickly once you have enough starting fund.

We are always here for you.

Email: service5@cnmould.com

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