Hopper alwalys called barrel.Like screw, it is an important part in plasticizing injection device of IMM.

The barrel is on the periphery of the screw, containing the screw, and the screw rotates in the barrel. The working environment of the barrel is the same as that of the screw. They both work in the environment of high temperature, high pressure, corrosion and greater friction.

Function of hoppers :

The hopper and screw constitute the extrusion system. The barrel is also working under high pressure, high temperature, severe wear and certain corrosion conditions. In the extrusion process, the cylinder also has the function of transferring heat to or from the material.

• The structure of hoppers

Integral barrel

It is processed on an integral blank. This kind of structure can not only ensure high manufacturing assembly accuracy, but also simplify the assembly work, convenient heating and cooling system setting and assembly and disassembly. So, this kind of cylinder requires higher processing and manufacturing conditions.

Combination barrel

It means that a barrel is composed of several barrel segments. In a certain sense, the use of composite drum is conducive to local materials and processing, is beneficial to small and medium-sized factories. But in fact, the processing precision of composite barrel is high.

A clamping unit for an IMM is used to keep the mold shut against the forces developed when injection pressure pushes plastic into the closed mold. It includes a drive mechanism for moving a moving platen of the injection molding machine in at least one direction.

Some think there are only 2 types of clamping units for injection molding, while actually there are 3.

1.Injection Molding Toggle Type Clamping Unit:

A toggle clamping unit for an IMM includes a toggle link, a crosshead connected to the toggle link, and a driving device for driving the crosshead. People mainly use it for high speed injection molding. Due to the different angles to the toggle position has a decelerate interval before the mold touchpoint that can literally give safety to the mold. In comparing with hydraulic-clamping the oil piston of the toggle is smaller, so it can provide a more high-speed in platen moving. And the mold thick adjust is using adjusting nuts to fix the platen, the mold position will always stay at the same point unless change the position.

Clamping Unit in machines

2.Injection Molding Hydraulic Type Clamping Unit：

Advantages:

1.Ideal for producing large volume parts, highly complex parts (automotive industry), high-tech product components with perfect surfaces, or thick-walled parts

2.Good for driving core-pulling and valve sprue

3.Due to the high availability and low cost of spare parts The return on investment is faster

4.There are opportunities for better injection rates, precise injection, and high levels of process stability.

3.Magnetic Type Clamping Unit:

Clamping force generated by a magnetic module in a magnetic mold splint or platen. Plate magnetization, demagnetization, mold closing, mold change can be operated through the interface

 panel.It is easy to use and operate. They give huge advantages through increased efficiency and productivity in a great number of applications even with limited handling.

[contact-form-7]

Why we need to set mold protection to prevent damage? Beside the injection molding machine itself, the second most expensive piece of equipment we use on a daily basis is the mold. If the molds are damaged, you are not only responsible for the cost of maintenance, but also for downtime and labor costs.If done correctly, the mold can rest on something as thin as a business card. Here are three key components for setting up mold protection on injection molding machines:

1. Starting position of mold protection

When do you reach the point in the mold where you might break when the mold is closed? In the figure above, this point is when the mold touches the guide pin. This is where we want to start mold protection; close the die until there is a small gap between the protrusion of the half die and the other half and there is a risk of damage. Then look at the mold location on the controller to see where you want mold protection to start.

2. Position of die protection end

You need to stop protecting the mold if the mold fully closed. This is called the clamping position or die contact position on the machine. Clamp the die in manual die setting mode until there is no gap between the half dies. For the figure above, the mold position is 0.05 inches. So,we must set the jig position on the machine slightly higher than the actual position to protect it.

3. Speed and pressure of mold preservation

And we need to set suitable speed and pressure for the machine,which is allowed to reach during die protection. In general, we are concerned to slow down the holding of the die during this period and set the pressure low enough so that if something gets in the way of the half die, the die will stop the jig motion and emit a jig alarm.

Don’t forget closing pressure is the most important aspect of die protection Settings!

Following these simple steps, you will help protect valuable mold asset.

Contact: kiles020801@gmail.com

Thanks!

Only for reference.

Plastic Moulding Advantages

1.Fast

Cycle times can be as low as 10 seconds. Combine that with a multi-impression injection moulding tool and you get a LOT of products very quickly. Generally speaking， it takes a bit longer as it’s a specialist material and has a lot of features to be moulded correctly, but at about 50 seconds you’d still get 70 parts per cavity per hour. CNC machining a one-off would take half a day – 3D printing it even longer!

2. Low cost per part

Whilst there is an initial high investment for the plastic injection molding tool, after that the cost per part is  low. Other plastic processing techniques may require multiple operations, like polishing, whilst injection moulding can do it all at once. If you chose to Guanxin machine the part above, it would cost hundreds of pounds per part. If you’re looking to go into full production, injection moulding is the way to go.

3.Special Surface Finishes, Engraving & Printing

In addition to a range of colours, the injection molding tool can be made with a special finish which will show on the moulding. Just about any finish you like, for example leather look, soft touch, sparked, high shine, you name it. You can also have logos or other text engraved in the tool. Finally, you can have your mouldings printed, as a range of inks are available.

4.High repeatability

Once your mould tool made, identical products can be made over and over again. A decently made mould tool has a very long mould tool life. as long as it’s treated well by the moulding machine setters !

Plastic Moulding Disadvantages

Sounds good right ? Of course there are some disadvantages:

1. High Initial Cost

Several rounds of designing and modelling are needed before the go-ahead or production is given. Then, the injection moulding tool need to make the mouldings will need designing & manufacturing.

2.Careful design needed

Plastic mouldings need very careful design to avoid tooling issues like undercuts, locked-in features and not enough draft. The material and temperature will need to be taken into account in wall design, otherwise the mould may not fill fully. The placement of ejectors and cooling lines will need to be considered to ensure the product is aesthetically pleasing.

 3.Initial lead time

Thanks for reading.

Mobile phone shell is usually made of PC(polycarbonate) or PC+ABS material molding, due to the relatively poor liquidity of PC, so the process is usually filled with high mold temperature, high material temperature; The gate used is usually the point gate, and graded injection molding should be used when filling, to find the gate position and the V-P(injection – pressure maintaining) switching position, which will be of great help to solve the gate mark and underinjection fly-side and other anomalies.

The following is the main molding conditions of mobile phone products, introducing the melt temperature, mold temperature, injection speed, back pressure and other molding parameters setting points for attention.

Melting temperature and mold temperature

The optimal setting of molding temperature is related to many factors, such as injection molding machine size, screw configuration, mold and molding product design and molding cycle time. In general, to allow gradual melting of the plastic, lower temperatures are set at the back of the tube/feed area and higher temperatures at the front of the tube. However, if the screw is not designed properly or the L/D value is too small, the reverse temperature setting can also be used.

In terms of mold temperature, high temperature molds provide a better surface appearance, less residual stress, and are easier to fill for thinner or longer forms. And low die temperature can shorten the forming cycle.

Rotation speed of screw

40 to 70rpm is recommended, but it depends on the design of the machine and screw.

In order to fill the mold as quickly as possible, the injection pressure should be as high as possible, usually about 850 to 1,400kg/cm2 and up to 2,400kg/cm2.

Back pressure

Generally, the lower the better, but for uniform feed, it is recommended to use 3 to 14kg/cm2. Injection molding speed, rate of fire and gate design has a great relationship, the use of direct gate or edge gate, in order to prevent sunbeam phenomenon and wave flow mark phenomenon, the application of slower rate of fire. In addition, if the thickness of the finished product is more than 5MM, slow shooting helps to avoid bubbles or dents. Generally speaking, the principle of rate of fire is fast for thin and slow for thick.

Elimination of common defects

a. Air mark: reduce the flow rate of the melt overgate and increase the mold temperature.

b. Undernote: Improve injection pressure, speed, material temperature, mold temperature, improve the amount of glue.

c. Flying edge: reduce the plastic filling pressure, control the V-P switching point to prevent over-filling, improve the clamping force, and check the mold fit.

d. Deformation: Control mold temperature to prevent uneven shrinkage deformation caused by mold temperature difference, through pressure maintenance adjustment.

e. Weld mark: improve mold temperature, material temperature, control the flow of each section to prevent trapped gas, improve the flow front temperature, increase exhaust.

Secondary processing   

The post-processing of mobile phone shell usually includes spraying, color spraying, printing, sandwich printing, electroplating, vacuum evaporation, hot pressing nut, annealing, ultrasonic welding and so on.

By spraying, electroplating and other post-processing methods, the appearance of plastics can be improved, and the friction resistance of plastic surface can be improved. Hot pressing ultrasonic welding and other post-processing methods can add some inserts for easy assembly; Annealing treatment can eliminate the internal stress of products and improve the performance of products.

The number 1 represents PET, or polyethylene terephthalate

Mineral water bottles, carbonated drink bottles are made of this material. Dong Jinshi pointed out that hot water can not be recycled in beverage bottles. This material is heat-resistant to 70℃, which is only suitable for warm or frozen drinks. When loaded with high temperature liquid or heated, it is easy to deform and dissolve harmful substances to human body. Scientists found that after 10 months of use, the plastic could release carcinogens and become toxic to humans. So when you’re done, throw it away. Don’t use it as a water cup, or use it as a storage container for anything else. (The girl in the United Arab Emirates got cancer because she used the same mineral water bottle for 16 months, resulting in the release of carcinogen DEHP.)

The number 2 stands for HDPE, high density polyethylene

Plastic containers for cleaning supplies and bath products. At present, plastic bags used in supermarkets and shopping malls are mostly made of this material, which can withstand 110℃ high temperature. Plastic bags marked with food can be used to contain food. Plastic containers containing cleaning supplies and bath products can be reused after careful cleaning, but these containers are usually not easy to clean, residual original cleaning supplies, become a hotbed of bacteria, cleaning is not thorough, it is best not to recycle.

The number 3 represents PVC, or polyvinyl chloride

Common raincoat, building materials, plastic film, plastic box, etc. Good plasticity, cheap price. But can only withstand 81℃ high temperature. According to reports, this material of plastic products are easy to produce toxic and harmful substances from two aspects, one is the production process is not fully polymerized single molecule vinyl chloride, the second is harmful in plasticizer. These two substances in the encounter of high temperature and grease is easy to precipitate, poison with food into the human body, easy to cause cancer. Currently, containers of this material are used less often to package food. If in use, do not allow it to get hot.

The number 4 stands for LDPE, low density polyethylene

Plastic wrap, plastic film and so on are this material. Heat resistance is not strong, usually, qualified PE wrap in the temperature of more than 110℃ will appear hot melt phenomenon, will leave some plastic preparations that the human body can not decompose. In addition, wrap the food in plastic wrap and heat it. The fat in the food is easy to dissolve the harmful substances in the plastic wrap. Therefore, the food into the microwave oven, the first to remove the wrapping film.

The number 6 stands for PS, polystyrene

This is the material used to make instant noodles in bowls and foam fast food boxes. Heat-resistant and cold-resistant, but not in the microwave to avoid the release of chemicals due to excessive temperature. And can not be used to contain strong acids (such as orange juice), strong alkalinity.

PVC products with a plastic injection molding

PC is a material that is widely used, especially in the manufacture of baby bottles, space cups and so on. In recent years, baby bottles have become controversial because they contain BPA. Experts point out that, in theory, as long as in the process of making PC, bisphenol A 100% converted into plastic structure, it means that the product is completely free of bisphenol A, let alone release. However, if A small amount of BPA is not converted into the plastic structure of PC, it may be released into food or drink. The higher the temperature of the residual bisphenol A in PC, the more and faster the release rate. Therefore, hot water should not be served in PC water bottles. If the container has any fall or damage, it is recommended to stop using, because plastic products if there is a fine surface pit, easy to hide bacteria. Avoid repeated use of aging plastic appliances.

With the rapid development of the plastic industry today, injection molding machine occupies an important position both in quantity and variety. Injection molding machine has the function of forming plastic products with complex appearance, accurate size or dense texture with metal inserts. It is widely used in national defense, mechanical and electrical, automobile, transportation, building materials, packaging, agriculture, culture, education and health and People’s Daily life in various fields. The market is full of various models, different uses of injection molding machine, and how to buy a satisfactory injection molding machine, and what matters to pay attention to when buying injection molding machine, for users has been a very troubled problem.

KII Series machine

• Point 1: Technical parameters of injection molding machine.

The selection of injection molding machine can be judged by longitudinal or horizontal comparison. The so-called “longitudinal” is that the main technical parameters of the injection molding machine should meet the industry standards, according to the industry standards. The so-called “horizontal” is based on the technical parameters of similar injection molding machines at home and abroad. So this is a very careful scientific piece of work. According to the material, shape, structure and application of injection products and specific occasions, according to the mold structure, quality, precision, number of cavity, flow channel type and structure, shape, size, according to the product day, month, year production capacity automation degree to choose injection molding machine parameters at all levels.

• Point 2:Stability, reliability, safety and service life of the machine.

The stability of the machine is mainly reflected in the mold closing mechanism and injection molding system in each cycle, whether the smooth operation, in the silent without impact, noise shall not exceed the industry standard. These conditions are related to the mechanical manufacturing, assembly accuracy, but also to the reasonable design and structure of the bending elbow connecting rod.

The reliability and service life are mainly reflected in the system rigidity of the die closing mechanism, and are related to the structure, size of the template, tie rod, connecting rod and its pin shaft, as well as the material and its heat treatment process. Injection molding machine injection system such as cylinder, screw, screw head, check ring and screw drive spindle structure and manufacturing process, these parts are the main stress parts and wear parts of the injection molding machine, directly affect the service life.

• Point3:Safety of injection molding machine.

The reliability of low-voltage protection system is related to man-machine safety when the die closing mechanism is opening and closing the die. Injection molding machine requirements must be implemented electrical, mechanical, hydraulic joint safety protection system, this protection mainly reflects two aspects: one is the mold safety protection, the other is the personal safety protection. Before closing the mold, when the safety door is not closed, the closing mold should not be able to move; During the closing process, if the safety door is not closed to the correct position, the template action stops or the mold is opened automatically. If, when closing the mold, foreign bodies such as inserts fall into the cavity by mistake due to vibration and other reasons, or there are other foreign bodies embedded in the mold, the mold should stop the closing action, or automatically open the mold and alarm.

• Point4:The degree of automation should be high, the function should be complete and perfect, and the production efficiency should be high.

Modern injection molding machine can realize manual, semi-automatic, fully automatic operation, as long as the mold design is reasonable, it can realize the automatic operation from injection mold filling to product ejection and fall, can also be equipped with manipulator to realize unmanned operation. The core pulling function, the hydraulic nozzle control function and the rapid heating channel probe function can be programmed into the automatic program in the injection molding cycle for automatic circulation.

High production efficiency is mainly manifested in that each mold product in the normal injection process conditions, the molding cycle to be short. This is to reflect an injection molding machine mechanical, electrical, hydraulic system comprehensive performance index, therefore, must use high-quality hydraulic, electronic components, the use of precision manufacturing technology in order to improve the injection molding machine system sensitivity and repeated accuracy, this is the injection molding system efficient work of reliable guarantee.

The machine you choose has a huge impact on productivity and everything. Therefore, we should strictly screen the points mentioned above to help us better buy injection molding machine.

Injection molding machine is divided into the following five types:

• Vertical injection molding machine

Features:
Easy to achieve insert molding. Because the surface of the mold is facing up, the inserts are easily placed and positioned. The lower template is fixed and the upper template is movable. If the pull-belt conveying device is combined with the mechanical palm, the automatic insert molding can be easily realized.
The weight of the mold is supported by the horizontal template for up and down opening and closing action, will not occur similar to the horizontal machine due to the mold gravity caused by the forward fall, so that the template can not open and close the phenomenon.
Equipped with rotary table, mobile table and tilt table forms, easy to achieve insert molding, mold combination molding.

• Horizontal injection molding machine

The injection device and the mold locking device are on the same horizontal center line, and the mold is opened and closed along the left and right direction.

Features:
That is, due to the low fuselage of the mainframe, there is no height limit for the workshop
Products can automatically fall occasions, do not need to use the manipulator can also realize automatic forming.
Due to the low fuselage, convenient feeding, easy maintenance.
The mold needs to be installed by crane.
Multi parallel arrangement, molding products are easy to be collected and packaged by conveyor belt.

• Angle injection molding machine

The axis of the injection screw is vertically aligned with the axis of the mold closing mechanism template.

Features:
Because the injection direction and the parting surface of the mold are on the same plane, the Angle injection molding machine is suitable for the mold with asymmetric geometric shape or the molding center which does not allow gate traces.
Its advantages and disadvantages are between vertical and horizontal.

• Multi-station injection molding machine

The injection device and the mold closing device have two or more working positions, and the injection device and the mold closing device can be arranged in various ways。

Features:
The disk rotates 180º back and forth alternately on the same horizontal plane, allowing the operator to take parts and insert parts on the fixed operating surface, convenient work and high production efficiency.
High degree of automation, with automatic equipment, unmanned production can be realized.

• Electric injection molding machine

All-electric injection molding machine is a kind of machining injection molding machine with all power supplied by electric power through servo motor to drive each mechanical unit, such as melt glue, injection glue, seat advance and retreat, mold locking, mold adjusting, thimble.

Advantages:
High precision, high response;
High efficiency, low noise.
The cost is high, the price is high. Mainly used for forming high precision parts, such as light guide plate and other high precision optical parts.

Disadvantages:
Full electric injection molding machine is not as good as full hydraulic injection molding machine in service life. At present, the main components such as screw are basically imported from abroad.

• Electro-hydraulic injection molding machine

Electro-hydraulic injection molding machine is a new type of injection molding machine which integrates hydraulic and electric drive. It integrates the high performance of hydraulic injection molding machine and the energy-saving advantages of electric injection molding machine. This combination of electro-hydraulic injection molding machine has become the development direction of injection molding machine technology.

The company is footing the bill through overtime pay and revenue loss, and even considers investment in additional production capacity. Meanwhile, a simple output increase could be realized by just being critical of the productions at hand.

Injection molding

WHAT IS THE CYCLE TIME IN INJECTION MOULDING?

The cycle time in injection molding is the total time needed to complete the stages of the molding process:

1. Closing the mould
2. Material injection
3. Holding stage to fill and cool and avoid sink marks
4. Opening the mould
5. Eject or release the part

OUR RECOMMENDED APPROACH TO REDUCE THE CYCLE TIME IN PRODUCTION

M-Box helps you to monitor:

• Total cycle time (stage 1-5)
• Mould closed time (stages 2 and 3).

You just set the optimized target times (following the optimization steps below) for each mold configuration to the system.  When the mould appears on the machine, the corresponding RFID card (unique per mould configuration) is set to the M-Box. Then, if during the production either the cycle time or mould closed time deviates from the target, an instant notification is issued to the supervisor. If it goes unattended, a ticket is generated for handling by the production manager.

Injection Moulding Machine with Monitor-Box and electricity meter

Cycle time deviations no longer go unnoticed and are addressed immediately to make sure you produce at optimal output speed.

 

WHAT IS THE VALUE OF A REDUCTION OF 5% IN CYCLE TIME?

If the machine hours can be “sold” at typical gross margin levels, a reduction of 5% can yield the following:

screw cylinder

There are the following points for attention in the maintenance of screw tube of injection molding machine:

• Do not start the machine when the barrel does not reach the preset temperature. The new electric heating is generally required to reach the set temperature 30 minutes before operating the screw.
• If the machine stops for more than half an hour each time, it is best to close the blanking port and shoot clean the material in the cylinder, and set the insulation
• Avoid foreign matter falling into the barrel and damaging the screw and barrel. Prevent metal debris and debris from falling into the hopper. If the recycled material is processed, magnetic hopper should be added to prevent iron filings from entering the barrel.
• The use of anti-salivating to ensure that the plastic in the cylinder is completely melted, so as not to damage the transmission system parts when the screw backward.

Spiral tube

• Avoid screw idling, skid and other phenomena.
• When using new plastic, the remaining material of the cylinder should be cleaned. When using POM, PVC, PA+GF and other materials, try to reduce the degradation of raw materials, and rinse with PP materials in time after shutdown.
• Avoid mixing POM and PVC into the barrel at the same time, which will cause serious industrial accidents at the melting temperature.
• Found molten plastic abnormal or discoloration, brittle products, should adjust the temperature to confirm the heating ring temperature line work is normal, check whether the screw and over the glue head assembly is damaged.
• Such as disassembly or replacement of the nozzle, screw head, flange, to the surface of the bolt thread coated with high temperature anti-corrosion paste, in order to facilitate future disassembly.

KII Series machine

It is the thermoplastic or thermosetting material using plastic molding mold to make plastic products of various shapes of the main molding equipment.
Divided into vertica

l, horizontal, full electric. The injection molding machine heats the plastic and applies high pressure to the molten plastic, causing it to shoot out and fill the mold cavity.

History of injection molding machine.

The injection molding machine was invented in the United States in 1872 and has a history of 130 years, but the screw injection molding machine has been developed in the past 50 years and become the most commonly used injection molding machine in the industry today.

At present in the engineering plastics industry, 80% of the use of injection molding.
The common horizontal injection molding machine is still.

Development prospect of injection molding machine.

• High speed: Requires the production cycle to be as fast as possible.
• High efficiency and energy saving: In terms of energy consumption, we should save electricity.
• Environmental protection: Existing hydraulic injection molding machine, there are oil pollution problems.
• Large injection molding machine development direction: Two plate machine.
• Small injection molding machine development direction: All electric, electro – hydraulic compliance.

Now is the new historical period of innovation and development of the plastic processing industry. The main development tasks of the industry are to optimize the structure, change the development mode, promote industrial upgrading, and highlight the transformation from large to strong, from fast to good. Injection molding industry is facing the challenge of transforming from traditional injection molding to intelligent injection molding.

Usually, injection molding machines will have the problem of high electricity consumption, and because of what reasons? For the traditional injection molding machine, how to expand the space of energy saving?

How to reduce the power consumption of injection molding machine?

The energy consumption of the machine is mainly reflected in the following parts:

(1) Electric energy consumption of hydraulic system oil pump; (2) The power consumption of the heater; (3) Power consumption of circulating cooling water pump. The power consumption of hydraulic oil pump accounts for more than 80% of the total power consumption of injection molding machine.

Parameter of machine

         So, what are the energy-saving transformation methods of injection molding machine?

         (1) Use injection molding machine power saving system

The power saving system independently developed by Zhongke Yujie adopts closed-loop control, detects the pressure and flow signal of the injection molding machine through the sensor, and automatically adjusts the motor speed of the oil pump, so that the oil supply is consistent with the demand of the injection molding machine (i.e. reduces the output power), so as to achieve the purpose of energy saving.

         (2) Nano energy-saving heating ring of injection molding machine

For the injection molding machine barrel heating energy saving, using infrared radiation conduction mode, nano infrared energy-saving electric heating ring installed on the outside of the heating object, so that heat conduction one-way, effective conduction to the heating body, and small thermal inertia, high temperature control precision; The thermal efficiency is more than 99.8%, and the electricity saving can reach more than 30%.

         (3) Energy-saving insulation sleeve for injection molding machine

For injection machine barrel insulation energy saving, reduce heat loss and energy saving, covering plastic extrusion, injection molding and surface temperature, reduce heat loss, to save energy, thus saving production electricity and air conditioning electricity.

Injection molding machine in the mold closing, locking, shooting glue, cooling, pressure holding, mold opening and other stages of the required pressure and flow are changed. When the oil demand of injection molding machine changes, by the relief valve located in the oil pump outlet to adjust the load pressure and flow, and the output power of the motor is unchanged, resulting in energy waste.

Home drinking water is a rigid and long-term development of the big market. Household drinking water can be divided into plain boiled water, water purifier filtered water and packaged water. At present, the sales volume of packaged water is only 15.5% of the total drinking water volume, and the development space is broad. The quality of tap water and long-term trends determine the home packaged water space. Through the comparative analysis of Chinese and American tap water systems, it is expected that it is difficult to further improve the overall quality of Chinese tap water terminal, ana lod the domestic drinking water market will remain prosperous for ng time. The water purifier market has entered a bottleneck period, while the 100 billion level barreled water market is still growing steadily.
experience better product quality and consumption of disposable packaging water instead of bottled water is simply a matter of time, more economic than water purifier in small families and live alone. From the quality point of view, the qualified rate of water purifier is not qualified, and the disposable large packaged water is the quality of bottled water, to solve the safety risks of the recycled bottled water, and broaden the use of scenarios and sales channels; From the perspective of consumption cost, the consumption of water in households decreases under the trend of small families and living alone. Considering the dilution of the purchase cost of water purifier and the replacement cost of filter element, disposable packaged water is a more economical choice for those living alone. Due to the decrease of consumers’ trust in water purifiers and the limited contact distribution of bottled water, it will become a catalyst for large disposable packaged water.

business model change will promote industry concentration accelerated promotion. In the traditional circular barreled water business model, water stations dominate:
1) Closed user flow: the water station orders and controls the user flow by telephone, and there is no connection between the water company and the user.
2) “Bad money drives out good money” : What water consumers drink is determined by the water station, and small and medium-sized local enterprises can lower the quality and lower the price
Case, so as to grasp the local channel resources, and to change barrels, deposit mode and the national big brands.

• The drinking water requirements are high, especially the family members are more, drinking water is very suitable for buying a clean drinking machine. And compared with the traditional water purifier, water dispenser obviously can meet the needs of the crowd more, then water dispenser bottled water appeared, some of the capacity of the water is less than, can not meet the demand, some bottled water easy to dirt, so the choice of bottled drinking water has become a topic of concern.

1. It is best to drink the bottled water after unpacking within 10 days.
2. bottled water should not be placed in direct sunlight to the place.
3. Water dispenser cleaning is an indispensable part of ensuring the health indicators of bottled water. It is generally recommended to clean and disinfect once every 1-2 months.
4. pure water and mineral water should be drunk in rotation.

•   A mold is a heat exchanger, heat from the melting plastic into the mold, and then from the mold into the continuous circulation of the cooling medium – ice water.
  The formula for calculating the ice-water energy required by a mold is:

Q=W xC x △T x S

Q is the ice water energy required kcal/h
W is the weight of plastic raw material kg/h
C is the specific heat of plastic raw material kcal/kg℃
△T is the temperature difference between the melt glue temperature and the product demoulding ℃
S is the safety factor (generally 1.35-2.0), small value is selected for single machine matching, and large value is selected for multi-machine matching.