Compostable adhesive

Indirect environmental effects mainly pertain to the impact that adhesives have on waste streams (with biodegradable or compostable adhesives developed to address this issue), environmentally acceptable design opportunities offered by adhesives relative to other methods of fastening, weight reduction in transportation vehicles (with the resulting savings in fuel cost), and the manufacture of alternative energy products such as wind turbine blades, solar panels, and fuel cells. 

Ecovio FS Paper is also a compound of Ecoflex FS and PLA with a very high content of renewable resources. This grade was optimized for extrusion coating of paperboard. It can be processed on standard PE equipment and shows an excellent adhesion to card board and paper. The Ecovio coating forms a barrier for fat vegetable and mineral oil, liquid and aroma. Applications of choice are compostable paper cups for hot and cold drinks, freezer boxes or paper wraps for snacks. 

These polyesters disintegrate in compost after six weeks. Their application includes films for compostable trash or shopping bags lamination of paper, magnetic cards, cloth-adhesive tape sheets for thermoforming, extmsion-forming monofilament for fishing lines, woven nets and ropes ... 

Uses Used in thermoplastic PU, resins for surf, coatings, adhesives, syn. leather and fabrics to make stiffeners for shoes, orthopedic splints fully biodeg. compostable bags sutures fibers... 

G.J. Edgington and C.M. Ryan, Biodegradable/compostable hot melt adhesives comprising polyester of lactic acid, US Patent 5 700 344, assigned to H. B. Fuller Licensing Financing Inc. (St. Paul, MN), December 23,1997. 

The same applies to other resins snch as PLA (compostable plastic), vinyl alcohol copolymers (barrier layer and cap sealer), and poly(ethylene naphthenate) (used for additional barrier properties). These do not disperse well in the PET or HDPE base resins and can degrade the quality of the recycled resin (BoUn and Smith, 2011). Dark colors, any metal layers, adhesives not removed by water, non-plastic labels, and thermoset caps make it more difficult for PET to be recycled into a high-grade product. 

Poly(e-caprolactone)/PLA Blends Poly( -caprolactone) (PCL) is a water-insoluble biodegradable, petroleum-based aliphatic polyester synthesized by ringopening polymerization of -caprolactone (e-CL) [81, 82]. PCL blends are widely used in many applications such as compostable bags for yard waste or other organics collection, disposable food service items, food packaging, health care products, mulch films in agriculture, and adhesives [81, 82, 101-103]. The nontoxicity, biocompatibility. 

Polylactide has high potential in agricultural applications such as mulch films either in pure form or blended with other polymers such as thermoplastic starch. In addition, polylactide is used in compostable yard bags and dog poop bags. Lactic acid based hot-melt adhesives have also been developed (90). Foamed PLA could be used as structural protective foams, loose-fill packaging and insulation material as an alternative for expanded polystyrene (EPS). While packaging is currently the high volume application... 

As a packaging material, PLA film has been used to produce transparent films, trays, adhesives, and compostable tea bags (with PLA fibres) [37]. New technical improvements are likely to arise from the development of methods to improve stability during processing, blends and PLA-based composites, and new end-uses for the polymer in both packaging and non-packaging applications. 

Packaging/compostable plastics Building materials Bio-composites Textiles Adhesives. 

The PCL is used mainly in surface coatings, adhesives and synthetic leather, and fabrics. It also serves to make stiffeners for shoes and orthopedic splints, fully biodegradable compostable bags, sutures, and fibers. Recent studies show that it has many biomedical applications too. 

In industry, residues of cured adhesives and also non-cross-linked and liquid adhesives occur as waste. The former, as solid materials are either directly passed on as waste for disposal, or are preferably passed on for recycling. In the least favorable environmental scenario, they are disposed of as landfill. They are, however, usually recycled, either via composting or for energy recovery via incineration. Depending on how they have been treated, liquid adhesives are discharged with the wastewater and are either directly passed to a treatment plant or, if necessary, passed to a treatment plant after undergoing a specific pretreatment. There they are biodegraded or removed. 

---