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  Mould Blog

Sino Mould Co., Ltd
Add : 369# XinJiang Rd., Xinqian Street, Huangyan Taizhou, Zhejiang, China
P.C. 318020
Tel : 86 576 84086666
Tel : 86 576 84023777
Fax : 86 576 84018996
Email :sino-mould@hotmail.com

            mould@china.com 


Pubdate 2013-10-29 16:56

Cutlery molding line, including plastic spoon molds, plastic fork molding line and plastic knife molding line is large demand by the market. Sino mould can offers full set plastic cutlery molding line for our customers.

Plastic cutlery molds:

 
For plastic spoon, fork and knife molds, we develop multi cavity mold to satisfy large production demand within shortest time. Usually we can make cutlery molds with 16cavity, 24 cavity, 32 cavity, 48 cavity molds with semi hot runner system or full hot runner system. If with very large quantity, the mold is suggest to make with separate molds, otherwise it is also suitable to make spoon, fork and knife in one same mold when product weight are similar.

 
Plastic cutlery molding machine:
Sino has injection molding machine suitable for plastic cutlery molds production, it is suggested with high speed injection machine or servo machine to make fast cycle production and power energy saving. Also we offer auxiliary machine to keep the whole line working, like auto loader, crusher…
If you are looking for plastic cutlery molding line, welcome send inquiries to us.
Ms Diana
Mail: sino2@cnmould.com
Skype: sino.group01
Pubdate 2013-10-28 17:01

China injection mold manufacturer, sino mold has more than 20 years plastic injection mold manufacturing experience, is one of the top quality injection molds supplier in china. Sino is dedicated to offer customers with comprehensive molds and molding solutions, including good mold design, precision mold tooling, technical assist supports and so on. If you are searching for good china injection mold manufacturer, I convince that sino mould would be your best choice.

 Sino mold, china injection mold manufacturer, offers various plastic injection molds as follows:
Industrial use injection molds like industrial garbage bin molds, plastic pallet molds, various crate molds, plastic tool box molds…
Household commodity molds like plastic chair and table molds, plastic hanger molds, storage container molds, plastic cutlery molds, etc.
Packaging molds such as plastic cap and closure molds, PET preform molds, painting bucket molds, flip top cap molds
Other molds like different types pipe fitting molds, gas assisted injection molds, PC injection molds, stacking molds, bi-color or bi-component molds
 
Welcome your down visiting or send inquiries to us.
 
Ms Diana
Skype: sino.group01
Pubdate 2013-10-26 17:02

For crate molds, sino mold offer various types plastic crate molds like milk crate molds, fruit crate molds, plastic vegetable crate molds, beer crate molds, foldable crate molds and so on. Also sino has the ability to offer high quality milk crate molds in single cavity, double cavity or 4 cavities.

Milk crate, not like other fruit crate or vegetable crates or beer crate, crate length and width dimension not differs too much. Usually for milk crate molds, we suggest to make with 4 tips hot runner system to keep balance injection and good appearance.
 
Sino has strong ability to design and make milk crate molds, like support ribs adding to make sure milk crate strength and automatic production. If prefer to make milk crate mold with short cycle time, it is suggested to make the mold core and cavity with cooper beryllium as this is better on heat transferring than steel.
 
If you are looking for milk crate molds supplier, pls do not hesitate to contact with us.
Ms Diana
Skype: sino.group01
Pubdate 2013-10-25 17:04

 

Annually Sino Pipe Fitting Mould Co., Ltd develops more than 400 sets PVC pipe fitting moulds and offers professional PVC pipe fitting molding service for customers.
PVC pipe fitting mold structures
PVC pipe fitting mold with collapsible core structure
PVC pipe fitting mold with curve structure
PVC pipe fitting mold with unscrew structure
PVC pipe fitting mold with normal mechanical or hydraulic side system
PVC pipe fitting mold developing standards
During PVC pipe fitting mold developing process, usually customer would require to make PVC pipe fitting mold comply with certain standards:
l EN 1401 for PVC drain and sewage pipe fitting system (Min. DN 110)
l NBR 5688 for drainage pipe fitting system
l NBR 5648 for pressure pipe fitting system
l ASTM D 2466 SCH40 and ASTM D 2467SCH 80 for pressure pipe fitting sytem
l EN1329 for drainage pipe fitting system
l ASTM F 1498 for NPT thread pipe fitting system with 60°
l BSPT thread pipe fitting system with 55°
PVC pipe fitting mould –mould steel selection
Due to PVC corrosive feature, when manufacturing PVC pipe fitting mould, usually we select stainless mould steels.
PVC mould core and cavity: Stavax S420, DIN 2083, S136, DIN 2316 with temper treatment
PVC mould base: low level steel like 3G13 or normal mould steel with chrome or Nickel treatment
 
If you are looking for PVC pipe fitting molds, pls feel free to contact with us.
 
Ms Diana
Skype: sino.group01
Pubdate 2013-10-25 12:30

We have made several kinds of chair mould. Annually manufacturing over then 80 sets of chair moulds. Interchangeable inserts block for different chair backrest versions. Backrest inserts can be easily changed on the machine, we are also familiar with PC transparent chair with gas injection, various monoblock chair moulds with armrest or without armrest.

For the type of the chair, we have made several sets, such as sandy beach chair, Indian chair, household chair and so on.
If you have any new enquiry,please feel free to contact me!
Contact person: Ally
Skypesino.group10
E-mail:service19@sinomould.com
Cel: 0086 15057213389
Pubdate 2013-10-25 11:05

 

Over-molding is, in very basic terms, putting one plastic on top of another. Most of the time this involves molding a soft elastomer onto a more rigid substrate, a two part toothbrush as example, rigid polypropylene substrate with a soft elastomer over-mold to give it a “soft” feel.
This is usually pretty straight forward as long as you have good dimensional control of the substrate.
Recently we had an over-molding project that required molding a soft durometer over an even softer substrate. The substrate was pretty heavy walled as molded parts go, which makes this even more interesting.
First go-round we found the part was measuring too big, we checked the cavity, shrink, processing parameters, but everything was to spec. We had to scratch our heads for a few minutes until it occurred to us what was happening, the first mold (substrate) was actually compressing during the second molding, when the mold opened the part was allowed to decompress and it grew by nearly 10%. We were able to compensate for this using different molding parameters and get parts to spec, but it did have us for a while.
The main reason for mentioning this is to help keep us thinking, I have been molding for well over 25 years and have not seen this before, and it’s completely obvious in hind sight, but I didn’t think about it until it became a problem.
If you have any enquiry, please feel free to contact me!
Contact person: Ally
Skype: sino.group10
E-mail: service19@sinomould.com
Pubdate 2013-10-23 10:56


Plastic house moulds is often used as a dog’s house in our daily life. Sino Mould, one of the best plastic mould manufacture in China, has many years experience in making plastic mould.
Below is some information about plastic mould:

mould name: plastic house mould.
Plastic house mould usually has a mould with one cavity,. We also have double color mould for plastic house. Rich experience and professional technology always satisfy our client .Our company also have high reputation in world mould area.

If you have any project need plastic house mould, please feel free to contact me.

Posted by Snow
Email: export3@cnmould.cn   export9@dakumar.cn
Skype:sinogroupe-71
 

Pubdate 2013-10-23 10:30

Nowadays, more and more plastic battery box mould, automotive battery mould, industrial battery mould is centered in China. As energy-saving and environmental protection is more and more popular, battery box trade is extended to automotive area, wind power generation and our daily life. According to the statistics recently, global new-energy automobile will be increased to 35%.

We have designed for many automotive company with many kinds of battery box mould, including automotive battery box mould, truck battery box mould, wind power generation battery box and the battery box mould used in train.


Posted by Snow

Email: export3@cnmould.cn   export9@dakumar.cn
Skype:sinogroupe-71

 


 

 

 

Pubdate 2013-10-23 09:56

Sino Mould Co., ltd is famous domestic stack mould manufacturer Zhejiang, China, offer global plastic trade high quality stack plastic mould, thin-wall stack plastic mould, stack molding and stack plastic mould export service.

Mould name: stack mould

Country of origin: Huangyan,Taizhou

Manufacture: Sino Mould Co.,Ltd

Steel material; S45C, P20, 718H, 2738, 738H, NAK80,SKD61  ect

Mould base: SINO,LKM or Self-made.

Hot runner system: Anole, YUDO, HASCO,M-H-R,etc

Design software: Autocad, UG, Catia, Solidworks

Posted by Snow
Email: export3@cnmould.cn   export9@dakumar.cn
Skype:sinogroupe-71


 

 
 

Pubdate 2013-10-23 09:53

Hot runner is a heated parts which inject the thawing plastic into mould cavity. Hot runner system can be divided into two types: fully hot runner, semi hot runner. Different hot runner mould price for different types.
Why we choose hot runner moulds to produce product?
 

Because they have below advantages:

1. Shorten the cycle time
2. Reduce the waste in production
3. Improve product’s quality
4. beneficial for automotive production
5. Extend appliance area of injection technology.


Welcome to our company to discuss with us about hot runner.

Posted by Snow
Email: export3@cnmould.cn   export9@dakumar.cn
Skype:sinogroupe-71
 

Pubdate 2013-10-21 13:15

In the process of plastic injection molding, there may be many problems. Such as distortion, shrinkage, etc.

Distortion will happen in one of the following conditions:

1. uneven cooling system

2. unsuitable injection system

3. unsuitable molding parameters

4. product structure, such as unreasonable wall thickness

When the product is produced, it’s hot and the inner stress of material cause the product to curve or distort during the process of gradual cooling.

We can improve by modify the injection gate, cooling system, product structure etc. and adjust the injection molding parameters. We can take advantage of CAE measures such as Moldflow to find out the problem.

If that still cannot solve the problem, there is a physical way we can do.

We can make a fixture. Put the products in the fixture. After the product cooled, the product will not distort. But it needs another labor to do this job.

We can also cool it using special equipment, but that way is costive.

 

Pubdate 2013-10-21 13:00

Plastic injection mold cavity decides product output.
Especially for small products, and mass consumption products, multi-cavity mould is required. Choose mold cavity is also an important step.
Usually the mold cavity is choosing according to required output and molding cycle time.
In some conditions, other elements need to be considered.
First condition:
It’s a big plastic company. It wants to start a new project. The output requirement is large.
It already has some injection molding machines. And plan to use the machines to produce the products.
For example, the product is thin wall container. 2 cavity cycle time is about 4s, 4 cavity cycle time is about 6s, 8 cavity is about 8s(cycle time also related to injection machine). If customer required output is 3000 pcs an hour, we will suggest 8 cavity. But 8 cavity mould needs larger high speed injection machine. The buyer already has 2 smaller high speed injection machine, then he could buy 2 2-cavity molds. He needs not buy another large machine, and 2-cavity mold is easier to maintain.
Second condition:
It’s the first time customer start a plant, he has no molds and no machines. He has no formal experience.
For example, he wants to produce a whole set of disposable tableware. Spoon, fork, bowl, knife, plate. The required output is not large, 1000 sets per hour. The spoon, fork and knife is similar, the bowl is much slower. The bowl mould should have 4 cavities. The spoon, fork and knife should have 3 cavities each. Then we can make the spoon, fork and knife in the same mold, according to product property, make it reasonable cavity number. In this way, customer only need to buy 2 injection machines.
This case is not a very typical one. But for new starters, this kind of suggestion is good, it saves first time investment.
Welcome further communication on your project.


Posted by Nicole
Service1@sino-pm.com

 

Pubdate 2013-10-21 12:52

Nowadays, more and more molds are using hot runner. Hot runner is said to be the prolonged part of injection machine nozzle. Famous hot runner brands such as Moldmaster, Husky, Maenner, Yudo, etc. Using hot runner is necessary for some molds such as multi-cavity molds, thin wall product molds, precision molds, highlight molds, etc.
Actually, hot runner molds are more expensive than cold runner molds. And it requires on users’ maintenance ability.
How could its merits make up for its high cost?
Hot runner mould will have no waste material. On one part, it saves material. On the other part, it makes fully automatic production possible and saves labor cost. And the gate mark appearance is more beautiful.
Using hot runner decrease cycle time, thin wall container mould using hot runner could reach 3-4s for each shot.
Hot runner mould could have many cavities and stably produce similar property products.
Hot runner mould is suitable for thin wall product molds, precision molds, highlight molds, multi-color or multi-material product molds, etc. It produces high quality products.
With these merits, it is now the main trend of injection mold.
We can say, hot runner pushes injection molding field forward. And will lead out more breakthroughs in this area.
As hot runner injection mold manufacturer, we welcome you to contact us for mold order and technical consultant.


Posted by Nicole
Service1@sino-pm.com
 

Pubdate 2013-10-21 12:44

We are plastic injection furniture mold manufacturer and worldwide exporter for over 2 decades. Furniture Mould is one of our companies’ main categories of product. We are professional in furniture mould including:

Chair mold, such as for armchair, armless chair, kids chair, folding chair, legless chair seat, ghost chair, gas assisted chair, etc.

Table mold, such as for round table top, rectangular table top, table with legs, table leg, etc.

Stool mold, such as for adult stool, steel leg stool seat, kids stool, folding stool, etc.

Bench/sofa mould

Cabinet mold and drawer mold

Our furniture design has 2 advantage points:

Mold design largely influences mold size. We make the mold size as small as possible, so it requires smaller machine, and saves energy.

Furniture products are large parts and have high requirements over appearance. Cooling system is very important. We design the waterline close to product surface, increase waterline number to achieve even and effective cooling.

If your furniture has special design and special requirement, we have strong innovative ability to offer you custom solution.

To make furniture products more beautiful, IML (in mold label) could be considered. Labels could be custom-made and lables using IML will be bright in color and long lasting.

Should our furniture mold be of interest to you, please let us know.

posted by Nicole

service1@sino-pm.com

 

Pubdate 2013-10-21 12:34

We are dedicated to plastic injection mold for over 2 decades. Plastic injection package mold is a big branch of our product. We specialize in PET preform mold, various cap mould, thin wall product mold, cup mould, IML moulding.

For package moulds, we focus on multi-cavity, short cycle time, long mold life, easy maintenance, quick delivery.

In order to realize the targets to offer customers outstanding molds, we keep researching and innovating on molding technology. We are the leading mold company in multi-cavity PET preform area, in multi-cavity water cap, flip-top, 5-gallon cap area, thin wall container area and IML area.

We are based on our strong design engineer team, precise tooling machines, and highly experienced mold makers.

Package mold has special requirement over precision. For example, PET preform mold, if the lathe machine is not precise, there may be decentration, and then the preform is prone to broke when blow bottles. Most of our tooling machines are from Europe and Japan, and we are strict with tooling process to achieve required dimension and surface finish for package moulds.

PET preform mold, injection mold, package mould
 

Should any product of ours be of interest to you, please feel free to contact.

posted by Nicole

service1@sino-pm.com

 

Pubdate 2013-10-14 22:01

It is easy to find that PVC pipe fitting moulds usually have very big runner design,sometimes, the runner weight is even heavier than products,this is big waste for the company.The reason is because PVC material melting flow index is very low, it is not easy for flowing,if the runner is small, then the material filling and injection would be very difficult.
As we know, for multi cavity fitting moulds, because of the ejection requirement, the space for cavity layout is big,so PVC plastic mold runner is long, so if the runner size is not big enough, material flows very slowly,the material will become cold in passing long route. So PVC molding runner design should be reasonable, on one side, it is easily for material filling,on another side,designers need to consider to save the material as much as possible for PVC products molding company.


Miss Alice
moldingtech@gmail.com

 

Pubdate 2013-10-04 17:58

Sino mould has made many kinds of storage box mould, accumulate much experience in making storage box mould. Some pictures for your reference.

The steel for storage mould is general 718H/P20 pre-harden steel as cavity/core insert,accordingly to your lifetime requirement.

For the storage box mould is well polished and good fitting with the storage box cap.

For the injection gate this is 4~6 tips of hot runner.

We put the mould testing on 780Ton injection molding machine.

If you’re interested in this moulds pls kindly contact with us.

Posted by Vicky

Click here contact me:sinomould-06
Pubdate 2013-10-04 17:47

Sports bottle are most used of PE and PP, blowing PE/PP perform mould then molding the sports bottle.
For the PP perform mould its mould design is complex than PET preform mould, but basic structure is the same.
Each cavity self locking;
hot runner valve gated system;
Hot runner nozzle single point temperature control (different with PET pressure controller),Uniform heating temperature;
Excellent water cooling efficiency of cooling system;

The PP preform product design is very important , engineers will consider if the preform design and the thickness can allows the bottle in perfect blowing performance.
To test this, general make PP preform testing mould with single cavity.
Besides, the molding temperature is also very essential for PP preform blowing effect.

If you’re interested in this mould pls kindly contact with us.\

Posted by Vicky

Click here contact me:sinomould-06

 

Pubdate 2013-10-04 16:39

For the plastic drawer Consists of three parts container cap and stents.The three parts should be fitting very well otherwise will be easy stuck.

On the bottom of the drawer there has two parts design as limit position avoid the drawing drop outer.

Drawer will be easy deformation if the injection parameter is not adjusted well or the cooling condition is not good.We must find some method to avoid this deformation.

The plastic melting and shrinkage are also very important for plastic drawer mould.

If you’re interested in this mould pls kindly contact with us.\

Posted by Vicky

Click here contact me:sinomould-06
Pubdate 2013-10-04 16:22

 

Sino mould has made many kinds of laundry basket mould, accumulate much experience in making laundry basket mould. Some pictures for your reference.

The steel for laundry basket mould is general 718H/P20 accordingly to your lifetime requirement.

For laundry basket usually we design it with inner R angle avoid the hole scratch the clothes or other goods.

For the injection gate this is 1 tip large gate hot runner.

We put the mould testing on 780Ton injection molding machine.If you’re interested in this moulds pls kindly contact with us.

 

 Posted by Vicky

Click here contact me:sinomould-06
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