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Many consumers know that the triangle logo on the bottom of the beverage bottle is the "identity" of the bottle material, but few people care about the material of the film label on the beverage bottle
.
Polyester (PET) is an important environmentally friendly raw material for commodity label films
.
Polyester label film gradually started
Polyester label film gradually startedAs an important branch of plastic labels, heat shrinkable film labels can print exquisite and beautiful color patterns, and achieve 360-degree decoration, receive good visual effects, and are conducive to commodity sales
.
The development of heat shrinkable label film in China began in the late 1990s.
After more than ten years of rapid development, the current market consumption of heat shrinkable label film is about 280,000 tons per year.
The main types are PVC (polyvinyl chloride), OPS (Oriented Polystyrene) and PET (Polyester)
.
Compared with polyvinyl chloride shrink film, OPS shrink film has excellent environmental protection, but it is more sensitive to temperature.
Under normal storage conditions, its shrinkage is relatively high, and it needs to be stored and transported at low temperature, otherwise it is easy to shrink and denature, resulting in failure
.
Since 2014, polyester heat shrinkable label film has experienced rapid development, and the current annual production capacity exceeds 100,000 tons.
However, due to the influence and restriction of factors such as price and usage habits, the market share is 6%~8%, or 17,000~ 23,000 tons, plus some exported products, the current market annual output and sales are 20,000 to 30,000 tons
.
Environmental benefits drive polyester label film
Environmental benefits drive polyester label film Polyvinyl chloride heat shrinkable label film has low cost, good transparency and moderate shrinkage rate, generally 40% to 60%, and requires high heat source.
However, due to the close density of polyvinyl chloride and polyester for bottle body, it is not easy to use when recycling The simple flotation method is separated, and there is a problem of difficult recovery
.
At present, garbage disposal is mainly divided into incineration and landfill.
When polyvinyl chloride is burned, hydrogen chloride acid will be produced, which will corrode the incinerator and may generate dioxin gas, which is not conducive to environmental protection
.
Polyester heat shrinkable film is stable at room temperature, shrinks when heated, and heat shrinks more than 70% in one direction
.
The film is transparent to the body, easy to print and display the image of the product; tightly bundles the packaging, and has good anti-scattering; rain-proof, moisture-proof and mildew-proof
.
More importantly, the polyester heat shrinkable film is of the same material as the beverage bottle body, and can be recycled together with the bottle body, eliminating the need for separation
.
Under the background of the gradual implementation of garbage classification and recycling in the country, as an environmentally friendly material, the development of polyester heat shrinkable label film is the general trend
.
