恒泰源聚氨酯
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Our guarantee

這是描述信息

The sole is made of high quality PU resin

這是描述信息

Competitive prices in the market

這是描述信息

Timely after-sales service of technicians

Introduce

1. Application of Polyurethane sole material

Polyurethane sole material includes three kinds of components which are polyester polyol or polyether polyol (A component)isocyanate (B component)and catalyst(C component).Add C component and other additives into A component according to the certain proportion.After completely mixing them well,put them into A component tube of the sole injection molding machine. Then directly add the melted B component after heating into the corresponding B component tube. The sole will be made into shape after the best ratio is set on the machine.

2. Raw material Storage Condition

Materials should be stored in the cool and well-ventilated places which will be prevented from being filled with water and open flames.

3. Raw material melting method

Polyurethane A component and B component used for sole are solidified between 5-30℃.So before using,they should be heated and melted. But there is no need to neither solidify nor melt C component.

Polyurethane: the temperature of A component is from 60℃to 70℃. Its time is from 6hr to 8hr.The temperature of B component is from 60℃to 70℃. Its time is from 6hr to 8hr.

Polyether:the temperature of A component is from 50℃to 60℃. Its time is from 5hr to 6hr.The temperature of B component is from 60℃to 70℃. Its time is from 6hr to 8hr.

Melting under the high temperature and the long-time heating will lead to deterioration of resin material and the abnormal in the process of sole molding or quality issue for the finished soles. So the melting requirement that the temperature must be kept below 70℃ within 24 hours should be strictly followed.

Special Material: it will be performed in accordance with the specification.

4. Catalyst ratio method

The required amount of catalyst and pigment are added into A component. Timely put them into A component tube in the foaming machine after mixing them well by the high-speed agitator (maybe 3-5 minutes). Tighten and seal it.The amount of the added C component should be appropriate in order to avoid difficulty in operation or poor quality due to more or less.

Notice

  • Matching ratio is based on the optimal matching value which will vary with the category and additive amount of paint additives added.

  • Free foam density will vary with the seasons (temperature, humidity). 

  • Stripping time will be extended with the increase of the thickness of moldings.

  • Folding endurance conditions: bending angle is 90 degrees and the frequency is 80 times / min * 40 thousand times

FAQ

Problem Shoe sole is broken

 Answer   Inappropriate ratio/ demolding happens too fast/ mold temperature is too low

Problem Shoe sole shrink

 Answer   Nappropriate ratio/ density is too low/ adding too much water

Problem Bubbles in the shoe sole

 Answer   The cleaning liquid or resin material leaks out/ unstable pressure/ the filter is blocked

Problem Desquamation

 Answer   Raw material is expired/ density is too low/ pouring method is wrong/ mold design problem

Problem Unstable mixture ratio

 Answer   Component A and B temperature differs too much/ pump speed differs too much/ machine head is blocked

Payment terms

  • 100% TT IN ADVANCE。
  • Delivery time
  • Led-time is around 15 working days after we receive the payment. It varies according to different products and quantity.

Package

  • 18kg/drum or 220 kg/drum. It depends on customer requirements.

Transportation

  • By ship, train or truck.

Add:

No.1 Road,Industrial Zone, Wenling City,Zhejiang Province

       

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