The type of green packaging material

1. Repeated and recycled packaging materials

Repeated use of packaging, such as beer, beverages, soy sauce, vinegar and other packaging using glass bottles repeatedly.
Recycling packaging can be regenerated in two ways. The physical method refers to directly purifying and smashing without any residual contaminants. The treated plastics are then used directly in reusable packaging containers. The chemical method means that after the recovered PET is pulverized and washed, all of the PET is depolymerized into monomers or partially depolymerized under the action of a catalyst, and then the monomers are re-polymerized into recycled packaging materials after purification.

The repeated use and regeneration of packaging materials only prolongs the service life of plastics and other polymer materials as packaging materials. After reaching the end of its service life, it still faces the problems of waste disposal and environmental pollution.

2. Edible packaging materials

Edible packaging film. For decades, the familiar glutinous rice paper used for candy packaging and corn baking packaging cups for packaging ice cream are typical edible packaging.

The more mature synthetic packaging films are transparent, colorless, odorless, non-toxic, tough, high oil resistance film, can be eaten, and can be used for food packaging. Its gloss, strength, and folding resistance are all better.

Edible plastic wrap. As early as the 12th and 13th centuries, China used wax to apply orange and lemon to delay the weight loss of dehydration. Extend the shelf life of fruits and vegetables. The commonly used edible plastic wrap has been developed into a variety of functional properties, with obvious water resistance and a certain degree of selective air permeability. Therefore, it has broad application prospects in the food industry, especially in the preservation of fresh fruits and vegetables.

3. Degradable material

Degradable materials are plastics whose chemical structure changes in a specific environment that causes performance loss in a specific time. Degradable plastic packaging materials not only have the functions and characteristics of traditional plastics, but also can be split, degraded and reduced in the natural environment through the action of ultraviolet light in the sunlight or microorganisms in the soil and water after the service life is completed. Finally, they are non-toxic. The form re-enters the ecological environment and returns to nature.

4. Paper material

The raw materials of paper are mainly natural plant fibers, which will quickly rot in nature, will not cause environmental pollution, and can also be recycled for papermaking. Paper materials also include pulp injection molding parts, composite materials, building materials and many other uses.

Pulp molded products not only have the advantages of light weight, low cost, shock resistance, etc., but also have good air permeability and are conducive to the preservation of fresh products. In the international commodity circulation, they are widely used in fragile products such as eggs, fruits, and glass products. , easy to break, afraid of squeezed items on the packaging

Source: PACK.CN