Brown polystyrene sheet and manufacturing method thereof

Abstract

The invention discloses a brown polystyrene sheet and a manufacturing method thereof. The brown polystyrene sheet comprises the following components in percentage by weight: 85-90 percent of general-purpose polystyrene, 5-10 percent of high-impact polystyrene and 5-10 percent of brown master batch. The manufacturing method comprises the following steps: mixing the raw materials in proportion; melting and extruding the mixture by using an extruder at the temperature of 180 to 250 DEG C; feeding the melt material to a die head and casting into a thick sheet at the temperature of 200 to 250 DEG C; longitudinally and horizontally drawing and shaping the thick sheet in sequence to obtain a thin sheet; treating the thin sheet by processes of edge trimming, thickness measurement, spraying of silicon oil on double surfaces, rolling up, ageing treatment and splitting. The sheet is good in rigidity and toughness; by uniformly mixing the brown master batch and reasonably controlling the preheating temperature, the sheet is uniform in color, good in light transmittance and more attractive in appearance; in addition, the sheet is easy to stack up after being coated with the silicon oil; therefore, the sheet can be widely applied to product packaging of foods, medicines, electronics, clothes, toys and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a brown polystyrene sheet and a manufacturing method thereof. Background technique [0002] Biaxially oriented polystyrene film is a new type of green packaging material developed in recent years. Compared with traditionally used polyethylene and polyvinyl chloride films, it has high strength, high rigidity, non-toxicity, easy degradation, and easy coloring. , good gloss and transparency, easy processing and other advantages, it is widely used in the packaging of various items such as handicrafts, daily necessities, metal products, especially food. At present, the amount of biaxially oriented polystyrene film in developed countries such as the United States, Canada, and Japan has accounted for more than 60% of all films. [0003] However, traditional polystyrene materials have many shortcomings, such as brittleness, low impact strength, easy to crack, poor flame retard...

AI Technical Summary

Problems solved by technology

[0003] However, traditional polystyrene materials have many shortcomings, such as brittleness, low impact strength, easy to crack, poor flame retardancy, poor weather resistance, low heat distortion temperature, etc., and are not easy to stack, light transmittance Shortcomings such as low quality, single color and unattractive appearance cannot meet the increasingly broad application needs of customers. These shortcomings greatly limit the application range of polystyrene.

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