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Resulting in uneven color plastic molding products main reasons and solutions are as follows:

1. colorant diffusion is bad, this cause pattern tends to occur near the gate
2. Plastic or colorants poor thermal stability. To stabilize the product color must be rigidly fixed production conditions, in particular material temperature, quantity and production cycle
3. About crystalline plastics, try to make the various parts keep the cooling rate consistent.
4. The product design and gate style and gate position will influence the plastic filling, that will cause the plastic product some area off color.
Injection products color and luster defect cause analysis:
Typically, injection molded products surface gloss is mainly determined by the type of colorant and plastic mold surface finish. But there are also some other reasons causes injection molded products surface color and gloss defects. Causes and solutions for this analysis are as follows:
1. Poor mold finishing, mold cavity has rust and bad air venting, etc
2. Mold injection system is defective. Cold slug well and the main runner should be increasing. And polishing the main runner and gate is needed.
3. Plastic melt and mold temperature is low, partial heating can be considered if necessary
4. Working pressure is too low, too slow, insufficient injection time, lack of back pressure, resulting in poor compactness cause the surface dark

spice box lid overmolding
Now the ever-changing consumer product models require good looks, fancy design, and also to quickly meet market demand. Designers generally design the house ware products for different purposes, in different parts of different materials to meet the needs of a particular environment, and to extend the product life and increase aesthetic and practical purpose. This practical design requirements will undoubtedly lead to the production technology also will be complicated, double color injection molding process is to be born of this trend.
Double color injection molding is make two different color material injected to one same mold, to make plastic parts presents regular or irregular pattern moire-like colors to enhance the plastic parts of practicality and aesthetics.
The double color mold core and cavity must match well after rotate 180°. When make the design, designer must check this action, as this has very high requirement of mold base positioning process.
The total thickness of clamp plate and A plate should not less than 170mm. When design the mold, must check customer’s injection molding machine max and min mold thickness and KO hole size.
When molding the products, it’s better to make the 1st color a little bit bigger, so it can fit tighter when put it to the 2nd color mold.
Avoid 2nd injection melt flow makes 1st color product deform, if this situation may happen, must rectify.

double color injection molding
Injection mold in production, need regular maintenance, the maintenance doable in the injection molding machine is called primary care.
The reason to do primary maintenance is because in the production mold often occurs the following situation: the tiny material chips will be flying, volatile lubricants lead to insufficient lubrication, loose parts cause other risks and other situations.
That the case is bound to happen in the case of the injection molding process, so do the maintenance is necessary.
Primary maintenance are as follow:
  1. During the production process, wipe with a cloth every 8 hours on the parting surface both core and cavity side. But attention not to wipe mirror polished or textured core to avoid scratch.
  2. During production process need to give guide pin,  slider or sliding parts coated with lubricant once a day, play a ejector pin oil, to prevent wear damage or stuck.
  3. Each shift should check whether the slider and ejector pin moves abnormal, spring is broken?
  4. If found any problem should immediately stop production.
When found the product stick to cavity or core, should immediately stop production and don’t use diagonal pliers to take out the product.
  1. If production stops, regardless of short time stop, required to immediately turn off the chilled water to prevent mold rust.
  2. When take off the mold from the IMM, must ensure no water left in the cooling line and mold. Wipe clean the parting surface and check whether there is mold damage.
As we all know injection mold cycle time is very important for moulds and molds buyer. It’s the key factor that affects buyer’s production invests and cost. But how to reduce the mold cycle time to enable the mould buyer get maximum profit?
First of all, an optimal mold design is vital important. The mold designer must consider the best mold structure like injection gate, runner system, air venting, cooling, etc.
Designer should consider the best injection gate and runner system. If possible, try to avoid cold runner. Because hot runner mold can make melt flows faster and make molded products has beautiful surface.
The most important factor of reduce molding cycle time is mold cooling system. If the mold has best cooling design, the cycle time can be reduced a lot. Cooling system is designed to make the product uniform cooling and molding in a short time. Cooling system designed good or not is directly affect the product quality and production cost.
Many of mould buyers they have headache of mould suppliers’ delivery time. Most mould manufacturers are always delaying the delivery time. As we all know an old saying that Time is Money! Now comes the question, how to shorten the mould delivery time to make buyers’ profit maximum?
Firstly let’s talk about the mould design. In some factories the young designers do not have much experience, sometimes they designed mould structure is unreasonable. And the problem been found till the moulds testing, then the mould maker need to spend a lot of time and effort to rectify the mould. So, a good mould design is the fundamental and first step to ensure deliver on time.
Secondly, correct and suitable tooling should be taken. Many mould makers in order to save tooling cost, they do not use high precision tooling equipments and the work piece is not meet precision requirements, then mould maker need to re-tooling or change the part. It’s waste of time!
Aero Mould is a mould factory that respects our customers’ valuable time. We give our mould buyers best mould design. And we use standard mould base to ensure the mould quality and greatly shortened our delivery time.
mould supplier China
China plastic chair mould supplier AERO MOULD is a professional plastic moulds factory in China, we make nearly 28 sets various types chair moulds each year. We have made stadium seat mould, leisure chair mold, beach table&chair mould, ghost chair molds, etc.
In the year of 2015, rattan design becomes very popular, we have made 4 sets rattan chair mould successfully.
Generally, we use P20 steel for chair moulds and sometimes 718H is for high quality chair moulds. Guaranteed mould life 3 million shots runs fully automatically. Mould delivery time 45 days after deposit and mould design approved by customer.
If you are interested to buy a chair mould, pls feel free to email to, our rich experience ensures you the best quality. We look forward to cooperate with customers all over the world!
AERO MOULD is a experienced plastic injection mold manufacturer in China. We are specialized in making thin wall mold, double color mold, house hold product mold, pipe fitting mould, preform and cap mould, etc.
As now we are expanding, we are looking for agency all around the world. The agency could be a single person or a company. The agency should have good knowledge of plastic molds and have strong selling ability.
If anyone have good knowledge, selling ability and feel interested to be a agency, pls feel free to contact mail us via

plastic laundry crate mold
Seasoning bottle or condiment dispenser may called, is very commonly used in kitchen. Day by day people are attracting to the fancy daily products, we help our client to develop, design and building fancy products mould.
This seasoning bottle series has 250ml, 440ml, 500ml, 650ml, 800ml, 890ml available. The bottle was made of PP and cap made of PE material.
We applied special spout design for oil bottle so to avoid leakage, and a small cap for the spout will be dustproof. Compared to aluminum seasoning bottle, you can easily tell what spices was loaded in each bottle and you can easily see how much was left in the bottle.
If you are interested to develop such fancy daily products mould, pls feel free to send us enquiry. If you have new ideas for new products, pls come to us, we will make design according to your requirements. We are always ready to serve our customer with our rich experience.
Email               Mob & whatsapp +86 13666469798

plastic seasoning bottle mold maker
Most housewives are annoyed with all the clutters make the kitchen or house in a mess, and they are always complain that the storage space is not enough, expecially they have baby. Now it's a good chance for you to make a new business and solve their problem!

We have once made a storage rack mould. This storage rack width is only 130mm, so you can put it in the gap between your furniture. It can be put in the kitchen, bathroom etc. This rack is equiped with small wheel, when you need to take something, it's very convenience. Additionally, this storage rack is removable, you can make it multi-layer as you like.

This kind of storage rack is very popular in the housewives. If you are interested to buy a mould for storage, pls feel free to contact us. Pls feel free to send email to                                               skype   ritapanpyl

plastic storage rack mould maker in Chinaplastic kitchen storage rack mould
Today, more and more housewives are using plastic containers for food or fruit storage. This lead to many more people engaged in food package products producing. Thin wall food containers and thin wall buckets are becoming popular used in daily life.
For many new beginners, they do not have technical skills of injection molding. So here we will introduce some tips to judge a good thin wall mould.

1. Mould design inspection. There’re many designers they do not have experience of making a mould, so they cannot take everything into consideration. Few days ago, a Turkey customer came to me and told me the mould they presently using has too much cooling time. When our engineer studied their mould drawing, we found that the cooling line did not cool the products. Then our engineer drew a rough drawing to suggest them with new design to shorten the cooling time. This story is telling that a good design really plays a very important role, a good mould design really can reduce the cycle time so to save production cost.

2. Mould steel selection. Thin wall moulds usually working under big pressure and high speed, so the steel should use vacuum hardening steel with higher HRC. Aero Mould generally us S136 stainless steel for core and cavity, with HRC 48-52.

3. Hot runner selection. Thin wall mould requires hot runner to make raw material melt and flow faster, so to reduce cycle time. If the hot runner is bad quality, it’s really a very complicated problem during production.

4. Injection molding machine condition. A high speed IMM shall use for fast production. And make sure the mould is cooperating perfect with the machine.

Post by       MS. Rita                                email                    Mob. +86 13666469798

thin wall food package mould maker


Double color mold currently growing popularity on the market is because of this process can make the product look more beautiful and easy to change the color without paint.
Here are some tips for design a double color mould

1.When design the mould must check the movable&fixed half mould rotated by 180 ° Should be in consistent. This demanding high requirements of mould frame positioning processing 2.The total thickness of the front plate and A plate should not less than 170mm. 3. When design the mould, 1st color product can be designed slightly larger, so to make it match more tight with 2nd color core, so it will not come out flashes.

4. To avoid melted material will flood the first color molded prduct while molding the 2nd color.

5. Make cooling line layout evenly on core and cavity part

6. To avoid slider and angle lift injury the product when they return email skype ritapanpyl double color mould

plastic mold manufacturer AERO MOULD is a experienced moulds supplier in China.Our main products are thin wall mold,double color mould,houseware moulds,PET preform moulds,cap mold,industrial moulds,etc.

Our main business is
1- Double color mold series: double color cup, bowl mold
2- thin wall mold series: food container mould, ice cream mold, flower pot moulds
3- IML mold series: paint bucket mold with IML, food container mold
4- transportation series: plastic crate mold, pallet mould, beer crate moulds
5- package mold series: PET preform mold, PET jar molds, cap and closure mould
6- pipe fitting mold series: PVC pipe fitting mold, PPR fitting mould
7- houseeware and home appliance mold: refrigerator mold, washing machine mould, air conditioner moulds

We have experienced mold design and mold making team to ensure the quality. We will shorten the delivery time and molding cycle time, make your proudcts into market in advance!