A kind of bubble cup and preparation method thereof

Abstract

The invention belongs to the field of manufacturing plastic cups made of SNA, and relates to a bubble cup and a preparation method thereof. By adding a small amount of polyhydroxy acid sodium salt and sodium bicarbonate powder mixed foaming agent to SNA resin, after screw extrusion, injection molding, molding, cooling, and mold opening, the bubble density is 17‑21 / cm 3 , the diameter of the bubbles is 0.9-1.5mm, and the bubble cup with a wall thickness of 2.6-2.8mm not only has uniform and beautiful distribution of bubbles, but also achieves the effect of lightening the cup body, reduces the consumption of raw materials and greatly reduces the production cost; the present invention The bubble cup prepared with the SNA resin as the main raw material has good strength and temperature resistance, and has a simple preparation method and low raw material cost, and is very suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of production and manufacture of plastic cups made of SNA material, and relates to a bubble cup and a preparation method thereof. Background technique [0002] As a product with many advantages, plastic cups have penetrated into thousands of households. As a low-cost and durable product, it has been one of people's favorite products since its birth. It not only enriches people's lives, but also Make it easier for people to carry water out of the house. [0003] In order to achieve the characteristics of beauty and good looks, various bottles and cups with a bubble wall structure have appeared on the market, but these bottles and cups often have uneven distribution and size of bubbles, and a large amount of bubble powder is added. The material is required to have good toughness, but such materials are often less transparent, and most materials with low melt strength are used in blow molding, but such materials often h...

AI Technical Summary

Problems solved by technology

[0003] In order to achieve a good-looking feature, various bottles and cups with bubble wall structures have appeared on the market, but these bottles and cups often have uneven distribution and size of bubbles, and a large amount of bubble powder is added. The material is required to have good toughness, but often such materials have poor transparency, and most of them use materials with low melt strength in blow molding, but such materials often have poor rigidity and transparency, which is not conducive to the distribution of product bubbles Uniform and beautiful

[0004] Chinese patent application document (CN106275677A) discloses a plastic bottle structure with a pore wall and a preparation method thereof. After mixing the PE material and a foaming agent, the PE material is heated to produce a foaming effect. After the PE material is foamed, the The formed bottle wall is full of bubble pores formed during foaming, but the distribution and size of the bubbles in the bottle are not uniform, and the amount of bubble powder added is large, which still does not achieve a uniform and beautiful effect, and the PE melt strength is low , bubble forming is relatively easy, and its texture is soft and its transparency is poor, so its application in the field of daily necessities that pursues aesthetics is limited

Furthermore, materials with high melt strength commonly used in the prior art are not suitable for preparing bubble cups because of the difficulty in forming bubbles.

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