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Talking about shrinkage of edging strips

Release time:

2023-12-07 15:21

Edgebanding in the use and transport process due to temperature changes will occur in some of the size of the small changes, today we use edgebanding commonly used in three kinds of materials to specifically say that the shrinkage of edgebanding. Hope it will be helpful to you!

The shrinkage rate of three kinds of plastic edging strips is compared as PVC>ABS>PP, which can be seen that the dimensional stability of PP is good, ABS is second and PVC is poor. Observe three kinds of plastic edging strip with the temperature rise of the dimensional stability of the performance of the change situation. The shrinkage rate of the three kinds of plastic edgebanding strips with the increase of temperature becomes larger. The shrinkage rate of PVC edgebanding strip before sealing is very large, and after sealing, the shrinkage rate of PVC edgebanding strip is similar to that of ABS and PP below 70℃, and above 70℃, the difference is larger.

Shrinkage of the three is different, the reason is that the three heat resistance is different. Plastic heat resistance is expressed in the temperature environment of the material to resist due to their own physical or chemical changes caused by deformation, softening, size change, strength loss, other performance degradation or the ability to reduce the working life.

Heat resistance can be divided into physical heat resistance and chemical heat resistance, this article discusses the physical heat resistance of plastics, that is, the ability to resist dimensional changes. Heat resistance is usually expressed by a number of characteristic temperatures, and the one that has practical significance is the high continuous use temperature. This temperature characterises the temperature at which a plastic can be operated for a long period of time without serious deterioration of its properties under actual application conditions.

Three kinds of plastic edging strip, PP edging strip heat resistance is good, high continuous use temperature up to 120 C; ABS is second, high continuous use temperature of 85 ℃ - llo ℃, and PVC edging strip is poor, high continuous use temperature of 650 C ~ 85 ℃. ABS edging strip although has a better heat resistance, but because of its toughness is not as good as PVC and PP, in 80 ℃ when the heat deformation, so the ABS edging strip is good, but it is not good, it is good. 80 ℃ when the heat deformation, so that the edge of the board pieces appear gaps, hot melt adhesive exposure in the air under the curing loss of adhesion, the phenomenon of glue, to 90 ℃ will automatically fall off. And PP is because of its excellent toughness even if the heat can still adhere to the board, but with the rise in temperature, even if the sealing strip has even better heat resistance and toughness, due to the influence of the hot melt adhesive, as long as there is a little gap will be cured to lose viscosity, will lead to the phenomenon of deglueing.

And in the transport and storage process of the board, it is necessary to pay attention to the problem. Sea freight export furniture stored in containers, and containers in the midday sun is easy to cause high-temperature environment: In addition, some manufacturers of warehousing is not enough to pay attention to the warehouse, by the weather will often be affected by the warehouse will be unexpected, in the storage process is also prone to high humidity environment. These environments are prone to quality problems of the panels and sealing strips. Since the temperature of the container box has not been examined, and can not give an exact temperature, but theoretically speaking, the heat transfer process of the container is from the outside to the inside, although the temperature of the container box can reach 70 ° C, but in the internal box to reach 70 ° C will take a period of time, or not yet wait for the temperature of the internal environment to reach 70 ° C, the external temperature has been gradually declining.