Plastic bottle manufacturer: seven aspects to improve transparency PP plastic bottles

The crystallization of PP are typical type of polymer, to improve its transparency, plastic water bottles can be obtain from the following seven aspects to consider: 01, transparency of matrix resin matrix resin itself itself, has a great influence on the transparency of PP products. To enhance transparency PP, you can add a small amount of compatibility with good transparency excellent polyacrylate resin. 02, nucleating agent, nucleating agent, can significantly improve the crystallization rate, increase the rate of crystallization and crystallization slight ratio. ( 1) Inorganic nucleating agent and inorganic nucleating agent is given priority to with ultrafine talcum powder and SiO2, including calcium carbonate, mica powder, inorganic pigments and fillers, low price, rich source, gloss and transparency of products have a certain influence. ( 2) Organic nucleating agent organic nucleating agent is a nucleation effect of low molecular weight organic matter, represented by sorbitol and its derivatives, and its compatibility with matrix resin, can significantly improve transparency, or surface gloss product. ( 3) The dosage of the nucleating agent in terms of sorbitol nucleating agent dosage more than 0. Transparency, after a 3% improvement effect is not obvious, and even will be decreased; But the amount is lower than 0. Less than 2%, the nucleation, transparency increase was not enough. 'Accordingly, nucleating agent dosage best at 0. 2 - 0. 3%. So, the appropriate content of nucleating agent can better improve the transparency of PP. 03, extrusion temperature, temperature is exorbitant, nucleating agent can produce decomposition and volatilization of low molecular weight material, reduce the effective components of the nucleating agent decreased to improve the effect of transparency, and high temperature, destroys the original nucleus in PP, reduced the heterogeneous nucleation center, the modification effect; While the temperature is too low, dispersivity of the nucleating agent is bad, the transparency effect is poor. So, choose a suitable extrusion temperature to improve the transparency is particularly important. 04, flexibilizer toughening agent as toughening agent and PP miscibility, the refractive index is different also, will be bent on the mutual interface, thus affecting items pervious to light quality. With the increase of the content of the toughening of mutual interface area are more intense, pervious to light quality is poorer. 05 and the process parameters of the process parameters of ideal processing temperature, cooling temperature, injection pressure and other technical parameters on the transparency of PP also has a great help. Processing temperature: in the machining conditions, the temperature is lower, the smaller crystal size, transparency is better; Cooling temperature, cooling temperature is lower, will reduce crystallinity, transparency, also will be better. Injection pressure, injection time, and the holding time affects the orientation of molecules. Affect molecular crystallization and orientation, so under the condition of without affecting the product performance and appearance, shorten the injection and the holding time and reduce the pressure, can be to some extent improve its transparency. 06, forming process forming process comparison note, pull, the blowing process of products, found, injection, blow process to increase transparency in the most beneficial. 07, the higher the degree of finish of the mold mold, transparency of products will be the better. MORE + recommended product bottle PET health products bottle PET health products bottle PET health products bottle PET care bottle PET health products bottle PET health products bottle PET health products square bottle PET health products plastic PET health products bottle PET health products bottle PET health products bottle PET health products' Bowling bottle 】 PET health products bottles [ New arrival] Pet health products bottles 【 Preview 】 Acrylic health food bottle PS supplement bottle PS health food bottles of special tear cover cover