Molding your ideas into business success
   

China mold maker

China mould making factory
You are here: China mould making factory > blog
 
“Thin wall” usually refers to products with a wall thickness of less than 1 mm. Thin-walled products require changes in the process: higher pressures and speeds, shorter cooling times, and changes in the ejector and gate arrangement of the parts. Changes in processing technology have further contributed to the development of molds, machines and parts.

Aero Mould Co.,Ltd has rich experience in design and manufacture thin wall moulds, like thin wall container mold, mold for thin wall disposable ware, thin wall mould for IML projects, etc. We always believe a good mold design can greatly increase our customers' production. When our designer making the design for every project, the first thing he considered is the cooling time. He will try every possible to make cooling to everywhere of the part, so can greatly bring down the cooling time and immediately increase the output.

Regarding the mould steel:
  1. considering the high speed and high pressure injection, and the mold need to connect chilled water, we always use stainless steel 2316 for the base
  2. core & cavity steel: considering to be anti-rust and long mould life requirment, we always use 2344 HRC48-52, S136 HRC48-52, DC53 HRC48-52, etc
thin wall mould maker in China
Two-color injection molding refers to the injection molding of two different materials into the same set of molds, so that the injection molded parts are formed by two materials. Some of the two materials are different colors, and some are soft and hard, which improves the product's aesthetics and assembly performance. 
 
 
Double-shot molding is a method in which two plastics of the same color are plasticized through two barrels, either simultaneously or sequentially through the same nozzle. By using two injection molding machines or two-color injection molding machines, various kinds of mixed color patterns can be obtained, and products with obvious color separation can also be obtained.

Aero Mould Co.,Ltd is a professional and experienced double color mould making factory in China, we have made more than 30 sets two color moulds in the year of 2018. Below is an example of the two color mold we made.

product name: two color mop cap mould
product material: PP + TPR
product weight: 40 grams
mould cavity: 4+4
mould steel: H13 HRC45-48
mould size: 550*580*660mm
mould running: fully automatically
two-shots-mold-maker-China
Chinaplas 2018 exhibitor
When designer make the injection mould design must first determine its opening direction and parting line at the beginning of the design to ensure that the loose core structure parting line effect the on the product appearance are eliminated as much as possible.
 
1. After the mould open direction determined, the product strengthen ribs, locks and other structures should designed and consistent with mould open direction.
 
2. Mould open direction determined, then to choose the appropriate parting line, to avoid undercut and improve the product appearance and performance.
 
  •  Draft angle
1. Appropriate draft angle can avoid scratch on product. Product with glossy surface, draft angle should be ≥0.5°. Product with thin texture, draft angle should >1° and thick texture surface product draft angle should>1.5°
 
2. Appropriate draft angle can avoid ejector mark, deform and break by eject
 
3. For deep cavity structure product, the outer surface angle should be greater than inner surface to ensure the mould core is not offset, get a uniform wall thickness, and to ensure the product opening strength.
 
  • ØWall thickness
1. All kinds of plastic have a certain wall thickness range, generally is 0.5-4mm, when the wall thickness is more than 4mm, will cause too long cooling time, resulting in product furface shrink mark, then should consider changing the product structure.
 
2. Uneven wall thickness will cause the surface to shrink, and joint mark.
 
  •  Strengthen rib
1. The rational application of the ribs can increase the rigidity of the product and reduce the deformation.
 
2. The thickness of strengthen rib must be ≤ (0.5 ~ 0.7) t product wall thickness, otherwise the surface shrinks.
  
As a professional and experienced plastic mould manufacturing factory, we Aero Mould are specialized in making high speed thin wall mould, double color molds, multi cavity closure molds, pipe fitting mould, etc. 

Our core competence is optimal mould design and on-time delivery.
 
About design: Our Spain client once told us excitedly " The mould cooling is amazingly designed, very efficient!"
 
Our Bangladesh client -- the Bangladesh biggest plastic factory, they have more than 1000 moulds made annually, 
say " I know your mould structure, always I no need to check design. You can start mould tooling once after design finished"
 
 
About delivery:  Our USA client ---- the No.1 in making disposable products in America,
The owner always say to us "You are our first mould supplier that deliver ahead of schedule"
 
 
Our excellent cooling system design helped our customers increased their output 15% - 25%, we believe we can also help you. 
In such a big world, God guided us to known each other, we hope to have chance to support you with your project and prove you our quality. I believe both of us will benifit from our cooperation.
Gas-assisted and water-assisted injection molding based on similar technology, and therefore its scope is similar. So, what is the difference between the two techniques in? What are the applicable scopes for both technologies?
 
Gas-assisted injection molding, as a very mature technology has been applied for many years of history in the injection molding industry. Gas-assisted molding technology one of the most important field of application is the production of thick-walled plastic parts, such as the production of handles and similar products.
 
Correspondingly, water-assisted molding technology is a new technology, since IKV announced the preliminary results of water-assisted injection molding up to now has only six years, but this technology has been rapidly developing. During the actual production, water-assisted technologies are more and more used in the plastic parts that have functional space or flow channel.
 
Gas-assisted injection molding techniques are used to produce rod-shaped parts can be reduced part weight and the cycle time. GAIM will also help significantly reduce or completely eliminate the wall thickness of the plastic parts of the regional plane, deformation and shrinkage marks, thereby improving the quality of plastic parts.
 
The thermal conductivity of water is approximately 40 times than the nitrogen gas, the heat capacity is four times as nitrogen. Apart from ordinary mold cooling, cooling water will cause internal cooling, compared with gas, so cooling time can be reduced by up to 70%. At the same time, water is also a non-compression and inexpensive medium.
 
Water instead of nitrogen cavity surface quality will be better. In addition larger parts can be processed and water-assisted injection molding to form a more uniform wall thickness, reducing the residual wall thickness.
 
Water-assisted injection molding and gas-assisted injection molding process can be used in different methods. They did not differ in terms of the use of machinery but differ in mold design and process control. Water-assisted injection molding is a two-step process similar to gas-assisted injection molding: firstly the cavity is filled completely by melt; in a second step, the injection water to form a cavity.
 
Water-assisted injection mold is generally more expensive than gas-assisted mold, the reason is all the higher manufacturing mold steel village quality (sturdy nickel plating or titanium nitride coating for the protection of water-assisted injection mold from corrosion is essential )

gas-assisted injection molding
AERO MOULD CO.,LTD is a professional aerosol cap mould and spray cap mould making factory in China. We have made various sizes and types aerosol cap moulds exported all over the world. Recently we have made a D52 aerosol cap mould for a Spanish customer. Below is the detail information of the 16 cavity spray cap mould.

Name: D52 spray cap mould
Material: PP MFI 20-25
Mould steel : core German DIN.1.2083 HRC 48-52
                        cavity German DIN.1.2083 HRC 48-52
                         plates 1.1730
Runner system: 16 drops Husky hot runner
Eject way: stripper + ejector pin
Mould running: fully automatically
Mould size: 580*600*560mm
Delivery time: 45 days

As the spray cap required quantity is huge, so the spray cap mould will run under fast speed and high pressure, so we must ensure the mould is strong enough and must use very good steel to avoid plates deformation after running years. AERO MOULD designer had considered every details during making the mould design. Our goal is not only to offer you a mould, but a fine solution for your projects.

If you are looking for a trustable and professional aerosol cap mould making factory, I have 100% confidence that AERO will be your right choice! Your enquiry is warmly welcomed to quotation@aeromoulds.com
aerosol cap mould
Aero Mould Co.,ltd is a professional plastic mould making factory in China. From 3rd April to 7th April 2017, we will be exhibiting at the Feiplastic Fair in São Paulo Brazil.
During the exhibition, Aero will exhibiting thin wall and double color moulds.

Having worked with a variety of clients within this specialist market sector for many years. We have assisted our clients to design and develop new and exciting plastic injection moulded products specifically for the thin wall food packaging and double color houseware sectors. We are proud that we are not only a mould maker to our clients, but also an important solution provider!

We treasure every opportunity to meet with you, our valued friend and customer.
 
If you will also attend this fair, we cordially invite you to visit our booth at P34.

double color mould|Feiplastic 2017


Name: 650ml food container
Cavity: 4
Material: PP
Mould steel: Assab S136
Runner system: 4 drops hot runner
Gate type: pin point gate
Eject way: stripper
Mould running: fully automatically
Mould size: 710*810*500mm
 
  •  High hardness and high wear resistance stainless steel
  • High precision tooling equipment and three coordinate inspection ensuring the accuracy
  • Optimized cooling system
thin wall container mould maker
Short shot refers to a phenomenon that the plastic injection mould cavity can not be completely filled. Any factors that prevent the polymer melt flow or insufficient injection weight could lead to a short shot phenomenon. These factors include:
 
1. Melt temperature, mold temperature or injection pressure and speed is too low
2. Uneven plasticizing
3. Adverse air venting
4. Insufficient melt flowability
5. The gate size is too small or plastic product’s wall too thin
 
How to solve the plastic products short shot
1. Increased melt flow
2. Fill the thick wall first to avoid retention, leading to premature hardening of the polymer melt
3. Increase the number of gates to reduce the flow ratio
4. Increasing the size of the flow channel, reducing the flow resistance
5. Make air venting at appropriate location to avoid air trap
6. Increasing size and quantity of air venting
7. Check the check valve on the injection molding machine and the inner wall of the cylinder for wear, said wear can cause severe injection pressure and injection volume loss
8. Increase the injection pressure
9. Increase injection speed
10. Increase shot weight
11. Increase injection barrel and mould temperature
 
AERO MOULD is a professional plastic injection mould making factory which can offer you a good solution to your plastic injection molding.
IML container mould
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
13666469798
 
点击这里给我发消息
 
点击这里给我发消息