Latex reclaimed rubber production of rubber products good elasticity, high elongation at break, tensile strength, with the basic properties of natural rubber products, but also improve the aging resistance of rubber products, is to replace the production of natural rubber rubber products Ideal raw material However, the use of latex reclaimed rubber production rubber products may appear demoulding problems, whether the quality of latex reclaimed rubber products? How to solve this problem?
There are many influencing factors on the rubber release rubber products stripping, we can specific analysis of specific problems, according to different reasons to find the appropriate solution:
1, latex reclaimed rubber mold design precision, maintenance in place
The impact of latex reclaimed rubber mold on mold release is mainly manifested in two aspects: one is unreasonable mold design will cause reclaimed rubber products is difficult to stripping, so the mold size must be accurate, in full compliance with the outline of rubber reclaimed rubber products, shape, This is to ensure the smooth release of latex reclaimed rubber products based on the second mold must be diligent and maintenance, mold cleanliness, mixed with impurities, deformation, positioning changes will lead to latex reclaimed rubber products demoulding difficulties, so the mold during use Must be promptly cleaned (including electroplating, spraying PTFE, sandblasting, etc.), regular testing of mold deformation, positioning and so on.
2, a reasonable design of latex reclaimed rubber products size
Latex reclaimed rubber products in the design of the time to pay attention to its shape, thickness, stripping slope, especially stripping slope. Latex reclaimed rubber products baked, the product will be cooled to produce centripetal contraction in the core or pin to produce a great grip, thus hindering the stripping. If you increase the stripping slope, can significantly reduce this resistance, but also to avoid non-slant caused by products such as tearing and other defects. General latex reclaimed rubber products have a slope of 1 ° ~ 3 °, the experimental results show that this point contribute to the smooth release of products.
3, adjust latex reclaimed rubber products formula
Latex reclaimed rubber formulations Recipe vulcanizing agent, improper improper selection, excessive use of latex reclaimed rubber or plastic content is too low will lead to reclaimed rubber products demoulding difficulties. Therefore, according to the performance requirements of latex reclaimed rubber products to develop a reasonable and appropriate viscosity formula: If the cost permits, you can use a high content of latex reclaimed rubber or a small amount of natural rubber to improve the rubber reclaimed rubber products effective rubber hydrocarbon content; If the problem of demoulding can also be considered to increase carbon black reinforcement, rubber reinforcement to improve performance, improve the latex reclaimed rubber processing technology, contribute to the smooth release of latex products.
4, strictly control the production process
Latex reclaimed rubber products in the production process, vulcanization time, curing temperature is not enough will result in demoulding problems. Therefore, latex reclaimed rubber processing must be strictly controlled product curing time, vulcanization temperature, improve the level of demolisher operations, to avoid all due to improper handling caused by the demoulding difficult problem.
5, the use of release agent. If the cost allows, you can add the right amount of mold release paste in the plastic to reduce the frequency of injection mold release agent and dosage, so that mold release agent can effectively prevent the surface of the mold cavity, resulting in difficult die, but also to help latex reclaimed rubber The most effective way to smooth the release of products.
Recycled plastic products cause a difficult problem of demoulding different, require different solutions, if you have a better solution, welcome Discuss at any time.
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