Plastics are a wide range of synthetic or semisynthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be molded, extruded, or pressed into solid objects of various shapes.

2025年2月25日 · plastic, polymeric material that has the capability of being molded or shaped, usually by the application of heat and pressure.

2024年9月23日 · Plastics revolutionized medicine with life-saving devices, made space travel possible, lightened cars and jets—saving fuel and pollution—and saved lives with helmets, incubators, and equipment...

2025年3月20日 · Plastic pollution, harmful accumulation of synthetic plastic products in the environment. Plastics are persistent large-scale pollutants, and plastic debris (such as bottles, straws, containers, and plastic wrap) and particulates have been found in many environmental niches, from Mount Everest to the bottom of the sea.

2024年11月21日 · Plastic products are generally versatile, durable and lightweight. Plastic products are prominent in the construction, transportation, and packaging industries. Plastic innovations contributed to many life-saving products that revolutionized the health care industry.

2023年4月25日 · Read our explainer to find out more about the plastic pollution crisis: Why is plastic pollution such a problem? Affordable, durable and flexible, plastic pervades modern life, appearing in everything from packaging to clothes to beauty products.

2 小时之前 · Plastic producers insist their products are safe and say there are few materials that can rival plastics for versatility, cost and convenience.

However, when plastic waste is mismanaged – not recycled, incinerated, or kept in sealed landfills – it becomes an environmental pollutant. One to two million tonnes of plastic enter our oceans yearly, affecting wildlife and ecosystems.

The meaning of PLASTIC is a plastic substance; specifically : any of numerous organic synthetic or processed materials that are mostly thermoplastic or thermosetting polymers of high molecular weight and that can be made into objects, films, or filaments.

PLASTIC definition: 1. an artificial substance that can be shaped when soft into many different forms and has many…. Learn more.