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21 08, 2019

Mold Trial Process

By |2019-08-19T15:54:06+08:00August 21st, 2019|Categories: injection mold manufacturing, Mold Trial, Mold Trial Process, molds|Tags: , , |Comments Off on Mold Trial Process

When a new injection mold manufacturing is completely finished, the next step is mold trial (testing), to trial the mold we need to check some important information to avoid any mistake, we need to check the plastic material, samples color, quantity samples that we should send to customer, any special tolerance if needs to be verified during the mold trial, etc, below is our mold trial procedures & processes,Mold trial

  1. Set barrel temperature according to recommendations from the material supplier. Middle of recommended in front and lower end of recommended in back, if don’t have date sheet, reference from mold flow report. Record actual melt temp […]
20 08, 2019

Mold manufacturing guideline for the clamping plate

By |2019-08-19T15:54:06+08:00August 20th, 2019|Categories: clamping plate, molds|Tags: |Comments Off on Mold manufacturing guideline for the clamping plate

When we manufacture the cavity side of the clamping plate, there are some dimensions that we need to control with some tolerances so that our standard mold components and other parts can fit well in the clamping plate.

For the locating pinholes, the tolerance should be H7 (0/+0.015mm)

The hole diameter for the locating ring, the tolerance should be ±0.02mm

The hole diameter for the Hot runner manifold support insert, the tolerance should be ±0.05mm

The height dimension for the air venting groove on the Hot runner manifold support insert, the tolerance should be ±0.01mm

The slot for the locating pin to the sprue bushing, the tolerance should be 0/+0.10mm

The location of the hole for the locating pin is important, […]

20 08, 2019

Mold Modification Process

By |2019-08-19T15:54:06+08:00August 20th, 2019|Categories: Chinese mold, Chinese mold company, Chinese mold maker, Chinese molding company, molds, Plastic Mold Companies, plastic mold company, plastic mold maker, plastic mold manufacturer, Plastic mold manufacturers|Tags: , , , , |Comments Off on Mold Modification Process

As a professional plastic mold company, during mold manufacturing, we normally have some requirement for mold modification, this is a very common issue when we manufacture molds for our customer, below is a step that how to handle this modification in our mod companymold modification

  1. When we receive a request for modification from our customer. After that, we analyze the requested modification, which must be done at least within the same day as the files have been received or latest the morning after if the files have been received in the afternoon. It is important to create a clear illustration of the modification (ppt file […]
19 08, 2019

Manufacturing core and cavity insert Guideline

By |2019-08-19T16:05:31+08:00August 19th, 2019|Categories: cavity insert, China mold, core insert, molds|Tags: , , |Comments Off on Manufacturing core and cavity insert Guideline

When we manufacture the core and cavity inserts during the mold manufacturing, there are some dimensions that we need to manufacture with some tolerances so that it fits well in the pocket of the insert plate or cavity/core.

And this will save some work when we will fit the cavity & core, high tolerance, and good manufacturing technology will save lots of time for the moldmaster, below are some manufacturing core and cavity insert Guideline that we need to pay attention to make high quality mold.

When we make the corner radius In the manual milling machine, make a 0.2mm big step there, after hardening, we don’t have to grind on the corner when we fit […]

19 08, 2019

Plastic Injection Molding Defect Weld Lines

By |2019-08-19T15:54:06+08:00August 19th, 2019|Categories: molding part defect, molds, Weld Lines|Tags: , |Comments Off on Plastic Injection Molding Defect Weld Lines

Weld Lines is a molding part defect that will reduce the part lifetime or even broken. Before massive production, function testing is very important,

Several years ago a customer transferred an old single cavity mold to our facility. The part was a very simple rectangular ring. It had two sub-gates, one at each end of the part on the short side of the rectangle. The material was glass-filled and made a very strong part.welding line

We made our first sample submission and were approved for production immediately. The next day we delivered the first parts for their order. A couple of weeks after the plastic parts were delivered I […]

16 08, 2019

PBT Injection molding

By |2019-08-19T15:54:09+08:00August 16th, 2019|Categories: molds, PBT Injection Molding, PBT Injection Moulding|Tags: , |Comments Off on PBT Injection molding

Polybutylene terephthalate (PBT) has advantageous combination properties such as a convenient source of raw materials, and mature polymerization process has gotten easier, low cost and easily forming and processing. Nylon, polycarbonate (PC), polyoxymethylene and modified polyphenylene oxide are five major engineering plastics.

PBT Injection Molding (Moulding):

PBT is a kind of crystalline polymer with a sharp melting point (225-235 Celsius degree). Crystallinity can reach 40%. When the temperature rises above the melting point, the liquidity of melt will become obvious. However, when changing from the molten state to the gruel state, it not only has the fast rate of cooling rate but has a fast crystalline speed.

PBT injection moldingIn […]

13 08, 2019

PA (Nylon) Injection Molding

By |2019-08-19T15:54:11+08:00August 13th, 2019|Categories: ABS injection molding, ABS injection moulding, molds, Nylon injection molding, PA injection molding, PA66 injection molding|Tags: , , , , , |Comments Off on PA (Nylon) Injection Molding

Information about PA (Nylon) Injection Molding

Characteristic:
Nylon has tenacious and wearable, self-lubricious and smooth characteristic with non-toxic and antibiosis and high water absorbability. In addition, its tensile strength and stiffness will be sharply decreased with the moisture-absorbing. Then, the size of finished pieces changes greatly. If in the high-temperature environment for a long time, it will be resolved.

It will not soften gradually with increasing high temperature until closing to the extent of melting-point. Once reaching the proper temperature, it will flow. It is soluble in many chemicals. However, gas, lubricating oil, developer, detergent and grease have no effect on nylon.PA injection molding

Advantages:
It has high mechanical strength, good tenacity […]

10 08, 2019

Rapid Injection Molds

By |2019-08-19T15:54:11+08:00August 10th, 2019|Categories: molds, Rapid Injection Molds, rapid mold|Tags: , , |Comments Off on Rapid Injection Molds

When discussing production processes like how injection molded plastics are made, there will obviously be short-cut processes that utilize the basics of the original but are able to do it faster and for smaller quantities. There are a number of reasons that a method like this, such as Rapid Injection Molds or rapid prototype injection molding, is necessary. When a company is developing a new product, they need to create prototypes to test before they run a full-line production. Sometimes a company needs a limited supply of products that are significantly fewer than the average number in normal mass production. With situations like these, the quickness and cheapness of rapid injection molding for […]

8 08, 2019

Injection Molding China

By |2019-08-19T16:52:51+08:00August 8th, 2019|Categories: china mold company, china mold maker, China mold supplier, China plastic injection molding companies, China Plastic Injection Molding Company, Injection Mold China, Injection Mold China company, Injection Mold Cooling System, injection mold maker china, Injection Mold Making, Injection Molded Components, injection molded parts, Injection Molded Plastic, Injection Moulding China, molds|Tags: , , , |Comments Off on Injection Molding China

Injection Molding ChinaSincere Tech, funded in 2005, located in Dongguan city, Guangdong province, China, is a professional injection molding china manufacturer, specializes in making injection Mould & moulding service to the oversea customer,

If you have a project that needs an injection molding China manufacturer to support, you are welcome to send us your requirement for quotation, you will not lose anything but have our competitive price for your reference,

Worry about your project data being shared by others, no worry, we can sign an NDA document to protect your project.

If you work with us. You will be fully satisfied with our excellent service, quality and reasonable […]

7 08, 2019

Plastic Injection Molding Toys for Christmas

By |2019-08-19T15:54:13+08:00August 7th, 2019|Categories: molds, plastic molding toys|Tags: , , , , |Comments Off on Plastic Injection Molding Toys for Christmas

If Santa’s workshop really existed, it would be full of elves with excellent industrial and commercial manufacturing expertise. Particularly because our modern society has demands beyond wooden toy soldiers and cloth dolls with yellow yarn hair and the population continue to rise, mass production would be vital for the survival of the North Pole. A system that would be working on overtime this close to Christmas would be the equipment for Plastic Injection Molded Christmas Toys and plastic molding toys from plastic injection molding manufacturing. Plastic injection molding is one of the most common techniques for producing basic children’s toys, Plastic Christmas Toys, such as dolls, action figures, game pieces, outdoor game equipment and a variety […]