RTV134 SILICONE - Silicone Mold rubber and Polyurethane Mold rubber

A Kind reminder

Fri, 28 Dec 2018 20:13:06 -0800

A Kind reminder

The world's largest annual human migration is around the corner

"Well, sounds interesting. Where and When?"

You might ask.

Those engaged in constant business activities in China are probably smirking now.

Yes, they know the answer

It takes place in China and it falls on Lunar Chinese New Year

Although the festival doesn't officially start until February 5th,

the Epic homecoming party began 15 days earlier.

The migration lasts for 30 days --- from 5th Jan. to 5th Feb. this year

Millions of Chinese workers will be heading to their hometowns for the holidays.

Now those smart overseas dealers' nerves are on edge:

With major labor forces being away from the production site, holding up the public transport network for the nearly one month.

One thing is for certain:

Business activities in China will be paralyzed throughout February.

The impact is far-reaching:

Capacity reduced,

Raw materials falling short,

Commodity price soaring,

Lead time postponed,

Shipping space fully booked.

....

In one word, your supply chain will be disrupted,

costing you extra on purchasing with eroded margins,...Read More

Silicone raw materials market price is rising crazily, after the Spring Festival holiday! --- RTV134 Silicone

Sun, 04 Mar 2018 18:41:25 -0800

After the Spring Festival holiday, the silicone market ushered in a good start, the market price is becoming clearer, silicone DMC compared to the pre-holiday rose about 1,000 yuan / ton , the current market price of 29,500-30000 yuan / ton mainstream. The first year, the market information should be flawless, Shin-Etsu factory gas spill in Japan, although not affect the operation, but still let the industry some panic. The other two will be held soon, ministries and local chemical plants have been notified, during the two sessions may have to stop production . In order to "rise" potential start of the organic silicon market, driven by the upper reaches, the middle and lower reaches will also follow up the recent price increases, the majority of silicone oil, silicon rubber plant started after the price is also appropriately raised.

The most crazy years ago, the rally was the silicone by-product, after the holiday return, the crazy still, the market price of the top three to 5-6 million / ton, driven by high prices, silicon ether, silazane has risen to heaven, the current mainstream price Is how much, Xiao Bian really hard to say, that the silicone ether 80,000 / ton is sky-high, as far as we know, there are manufacturers offer after the holiday has exceeded 100,000 / t, silazane 140,000 / t or so, scared small Chiba are lost. There are also hydrogen-containing silicone oil, 35000 / ton is the mainstream transaction price, better quality close to 40,000 / ton . This wave of rally has made many people in the industry feel uneasy. The gains are so high that they can not get the goods or dare to take too many goods. It is hard to predict how long the wave will last.

2018 began only two months, from upstream to downstream, from raw materials to byproducts are "demon . " There are also various policies on environmental protection and transport. Therefore, we must pay more attention to the market changes and make stocking plans in the new...Read More

Chinese RMB Strengthening To 6.10 Against U.S. Dollar By Year End

Sat, 03 Feb 2018 03:05:49 -0800

Nordic corporate bank SEB has revised its forecast lower on the Chinese Yuan (CNY) against the U.S dollar to 6.10 by the end of this year, an appreciation of 3.174% over their previous projection of 6.30. By the end of 2019 the bank’s analysts predict the Greenback at CNY5.80 - indicating an almost 5% strengthening on an earlier forecast (6.10).

Today at 10:29 a.m. New York time, the USD/CNY spot rate was quoted on Bloomberg at 6.2888, which was -0.0351 (-0.56%) off from the overnight position. And, were SEB’s end of year forecast for 2018 were to prove to correct it would mean the Yuan would have strengthened by 3%. A week ago on 24 January USD/CNY rate stood at 6.37.

But illustrating how things change, last week ago the bank published its latest Currency Strategy report citing a slower economy for China, but a stronger CNY - albeit at 6.30 by year end. The 12-month consensus on the currency pair was put at between 6.49 and 6.54 according to Bloomberg's survey FX forecasts.

From:

https://www.forbes.com/sites/rogeraitken/2018/01/31/chinese-rmb-strengthening-to-6-10-against-u-s-dollar-by-year-end-seb-forecasts/#63b83ce34d37

What’s driving Chinese raw materials’ price surge

Sat, 03 Feb 2018 00:57:54 -0800

Introduction

For buyers who frequently import from China, it might become a common scenario in the past couple months that you constantly received emails from your Chinese suppliers, informing you the tremendous turmoil in the Chinese commodities’ prices. To seriously tell you the truth, it’s the very fact that Chinese raw materials price are exploding.

Believe it or not, it has been many years that Chinese raw material markets didn’t go through such a big price fluctuation. According to the Chinese Medias, all raw materials prices are increasing sharply, including iron, chemicals, paper, glass etc. For instance, coal is now up 200% year-to-date; steel has also pointed at the record high 5,000 RMB/ton. PE plastic indexes are on a tear, jumping around 5.71% in the last three days alone. In particular, the paper price has gone up crazily. Since Dec., raw paper price is going up substantially 100-500 Yuan/ ton, while the paper board price is exploding by 20%. It’s no exaggeration to say that paper price is climbing double or even 3 times within one week. Unfortunately, nobody is able to say yet how long this will last.

Reasons behind the severity of recent big surge

Things become very serious this time. Many factories have told us a lot cost has increased and will keep increasing crazily. The rising of raw materials have brought such retaliatory price surge to the finished products. Chinese suppliers would tell you they have this reason to bring up their price accordingly. Not that I doubt it, but it’s right to some extent. Here, I am going to explain the reasoning behind the recent explosive move in Chinese raw material markets.

Reason 1: Coal Output Reduction

Let’s go back to couple years ago when Chinese government decided to cut coal production to improve its terrible air quality. They have worked on shrinking coal industry all the time, but things didn’t turn out as expected. This time,...Read More

Technical datasheet download

Thu, 01 Feb 2018 01:29:30 -0800

2018 Spring Festival holiday notice

Tue, 16 Jan 2018 01:15:28 -0800

Dear customers,

Please be informed that we will be closed from 5th Feb to 22nd Feb due to Chinese New Year holiday.(Spring Festival)
All the inquiries and orders placed after 20th Jan will be processed after 22nd Feb.
We apologize for the inconvenience, and your understanding is greatly appreciated.

May the year 2018 be meaningful and prosperous as ever for you!

Thank you.

2018/01/16

How to make a mold with molding silicone rubber?

Thu, 11 Jan 2018 18:47:20 -0800

Before we begin to know how to make a mold, we must know some basic knowledge. molding silicone rubber is a wondrous material to make molds for many kinds of objects of small or big size, because it has many advantages of odorless, non-toxic, high resistance to tearing, resistance to extreme temperature, high simulation precision, clear texture and lines, long service, sand so on. So far, we can begin to know the detailed method of how to make a mold with molding silicone rubber, and we take a photo frame mold for example:
Step one: To prepare and dispose of original model.
If the model is smooth and flawless enough, then we can definitely make a perfect mold for it. But if the original model has many weakness, then it is hard to make a good mold, no matter how good the silicone quality is.
Step two: Fasten the photo frame model. The joint of the frame must be sealed to prevent silicone from leaking. Then, fix the model in the frame.
Step three: Metering, mixing and vacuum deaeration.
For condensation type silicone rubber, the mixing ratio of the two parts of the silicone material is generally 100:2, which should be measured with an electronic scale. Then deaerate the mixture after stirring.
Step four: casting the mixture Pour 1/3 mold making silicone into the frame slowly to ensure that silicone is seeped into every corner. After that, pour the rest of the silicone into it.
Step five: demould.
Take out the model when the mold making silicone is completely cured. At last, it is necessary to clean and trim the finished mold.

What is the best method for mixing mold rubber?

Thu, 11 Jan 2018 18:27:16 -0800

There are many factors that can contribute to mold rubber not curing including cold temperatures, contaminants on a model’s surface, etc.
But the most common reason: inadequate mixing of Parts A & B. People mixing rubber for the first time tend to under-mix the material before applying. It is especially
easy to under-mix thick materials like silicone or brush-on rubber. Mixing large volumes of material also poses the risk of inadequate mixing.
Mixing Success: A Function Of Time & Technique – Time – Most mold rubbers give you plenty of time to mix and apply, so don’t worry about not having enough time.
Your goal in mixing is to be thorough, not fast.
Technique: Don’t Be Casual, Be Aggressive – This is where most “first timers” make the fatal mistake of using a “limp wrist”, meaning that they are not aggressive enough
in mixing the rubber. Use a stiff mixing paddle and employ a firm wrist, making sure that you scrape the sides and bottom of your mixing container several times.
Important material hides on the bottom and sides of your mixing container and failure to get this material into the mix will result in the rubber not properly curing.
The Best You Can Do -
“The Double Mix-And-Pour” Technique - After mixing thoroughly for 3 minutes, empty the contents of your mixing container into a second clean mixing container and
mix again for another 2 to 3 minutes before applying over your model. This technique is your best bet for successful mixing and the protection of your mold rubber
investment.

Why silicone mould easy to break?

Thu, 04 Jan 2018 18:47:37 -0800

Why silicone mould easy to break? Many customers pose the questions like this. When asked about the time of breaking, some people say the silicone mould easy to
break in demoulding time for some small parts, and most people reflect the silicone mould has a short service life. All customers wish that silicone mould has relatively
higher reproducing times, and be able to copy large quantities of products, because the cost to produce a silicone mould is relatively high, especially for large and
complex products. So, it’s time we explore the reasons of silicone mould easy to break.
This problem may largely due to improper hardness of silicone rubber to make silicone mould. There is a limit for silicone rubber, if its hardness is above 50 shore A, the
tensile and tear strength will be reduced, and it will be easily broken after the silicone mould has solidified. We should choose favorable hardness of silicone rubber to
make mould. Normally, the silicone mould will be in a weak and flimsy manner using the silicone rubber with a high hardness to make moulds for small sized products or
intricate and delicate designs.
The explanation for this phenomenon of silicone mould easy to break may be that the mixing ratio of catalyst is incorrect. The amount of curing agent has close
relationship with the operating time. The higher the room temperature, the less the amount added. And the silicone mould goes to harden and brittle for excessive use
of the curing agent(higher than 2% at room temperature 25℃).
Thirdly, why silicone mould easy to break involves the reason of too frequent use. In the process of work, silicone mould often leads to fatigue fracture under the longterm effect of cyclic stress. The properties of fatigue and fracture for silicone mould are dependent on the performance of the silicone rubber, such as its strength,
toughness, hardness, and the content of inclusions in material.
From what has been discussed above, we may...Read More

How to extend the service life of silicone mold?

Tue, 26 Dec 2017 19:22:52 -0800

It is generally known that silicone mold plays a mediating effect on the replication and production of products. In order to obtain greater benefits and the lowest cost of a
single product, we usually have to consider the best service life of silicone mold which can be affected from the selection of silicone raw materials to the making process
of silicone mold to the maintenance of the late. This failure for the silicone mold can be mainly classified into three kinds of wear, fracture, and deformation. Today, this
article is to identify the main causes of failure for the silicone mold and how to extend the service life of silicone mold.
I have mentioned that we can extend the service life of silicone mold from pre-production, production and post-production. Firstly, you are supposed to choose the
superior products with suitable hardness before making silicone mold. This selection of silicone rubber should be based on the texture, shape and size of products. For
large products, we ought to choose the silicone with higher hardness to prevent the silicone mold from deformation. And, the soft silicone can be applied in making
silicone mold for the small size products with detailed patterns.
In the production process of silicone mold, please do not blindly increase the amount of hardener in order to catch the production schedule. And the silicone rubber and
curing agent must be mixed evenly to extend the service life; uneven curing conditions can affect the service life of the silicone mold and reproduction times. Then, the
content of silicone oil should also be appropriate, preferably in the range of 5%-10%. Adding too much silicone oil, the silicone mold will be easy to become soft and
durable. In addition, it had better for placing 24 hours or more before putting into production for the silicone mold.
To extend the service life of silicone mold, any customers also should place considerable emphasis on the post-production. The...Read More