A hot melt adhesive comprises a polylactide homopolymer or copolymer, such as polylactic acid; sulfonated copolyester; and at least one plasticizer, and is compostable. The plasticizer may be a solid plasticizer, such as a benzoate, and a second plasticizer may also be used. The adhesive is suitable for use in a variety of applications, such as case and carton applications, use with burlap or other compostable substrates for tree bulbs or plant seeds, and use with other compostable films, and is especially appropriate for dual-walled paperboard beverage cups. The adhesive demonstrates good bond performance comparable to non-compostable adhesives over a range of temperatures, reflective of the temperatures of hot and cold beverages.

A hot melt adhesive comprises a polylactide homopolymer or copolymer, such as polylactic acid; sulfonated copolyester; and at least one plasticizer, and is compostable. The plasticizer may be a solid plasticizer, such as a benzoate, and a second plasticizer may also be used. The adhesive is suitable for use in a variety of applications, such as case and carton applications, use with burlap or other compostable substrates for tree bulbs or plant seeds, and use with other compostable films, and is especially appropriate for dual-walled paperboard beverage cups. The adhesive demonstrates good bond performance comparable to non-compostable adhesives over a range of temperatures, reflective of the temperatures of hot and cold beverages.

A hot melt adhesive comprises a polylactide homopolymer or copolymer, such as polylactic acid; sulfonated copolyester; and at least one plasticizer, and is compostable. The plasticizer may be a solid plasticizer, such as a benzoate, and a second plasticizer may also be used. The adhesive is suitable for use in a variety of applications, such as case and carton applications, use with burlap or other compostable substrates for tree bulbs or plant seeds, and use with other compostable films, and is especially appropriate for dual-walled paperboard beverage cups. The adhesive demonstrates good bond performance comparable to non-compostable adhesives over a range of temperatures, reflective of the temperatures of hot and cold beverages.

A packaging or wrapping for a food product, capable of resisting to high temperatures and of eliminating the overpressure generated by the water vapour inside the packaging due to temperature rise, without the same packaging having any aperture communicating its inside and the outside environment. The packaging is also adapted to restrain/reduce the emission of odor-generating substances that are generated during the heating or baking of the packaged food product, with respect to what occurs in the absence of a packaging, or with a packaging provided with apertures.

A packaging or wrapping for a food product, capable of resisting to high temperatures and of eliminating the overpressure generated by the water vapour inside the packaging due to temperature rise, without the same packaging having any aperture communicating its inside and the outside environment. The packaging is also adapted to restrain/reduce the emission of odor-generating substances that are generated during the heating or baking of the packaged food product, with respect to what occurs in the absence of a packaging, or with a packaging provided with apertures.

A method for manufacturing a polylactic acid-based hot melt adhesive includes: (1) preparing a first polylactic acid composition by adding a phosphite and a hindered phenol to a mixture prepared by adding and melt-mixing a first polylactic acid (relative viscosity 2.5-4.0) in a liquid mixture of a dithiocarbamate and a plasticizer at 180 to 280° C., wherein with respect to 100 parts by weight of the first polylactic acid, 10 to 100 parts by weight of the plasticizer, 0.02 to 0.3 parts by weight of the dithiocarbamate, 1 to 10 parts by weight of the phosphite, and 1 to 10 parts by weight of the hindered phenol are used; and (2) mixing a second polylactic acid (relative viscosity 2.5-4.0), into the first polylactic acid composition at 180-280° C., a weight ratio of the first polylactic acid/the second polylactic acid is 2/8 to 8/2.

A method for manufacturing a polylactic acid-based hot melt adhesive includes: (1) preparing a first polylactic acid composition by adding a phosphite and a hindered phenol to a mixture prepared by adding and melt-mixing a first polylactic acid (relative viscosity 2.5-4.0) in a liquid mixture of a dithiocarbamate and a plasticizer at 180 to 280° C., wherein with respect to 100 parts by weight of the first polylactic acid, 10 to 100 parts by weight of the plasticizer, 0.02 to 0.3 parts by weight of the dithiocarbamate, 1 to 10 parts by weight of the phosphite, and 1 to 10 parts by weight of the hindered phenol are used; and (2) mixing a second polylactic acid (relative viscosity 2.5-4.0), into the first polylactic acid composition at 180-280° C., a weight ratio of the first polylactic acid/the second polylactic acid is 2/8 to 8/2.

The paper reinforced tapes and reinforcement elements of this invention have improved repulpability, recyclability, compostability and biodegradability. Further, these reinforcement elements and paper reinforced tapes, despite being predominately paper, unexpectedly provide excellent container reinforcement properties and further can be used as opening tapes, closing tapes, tear tapes and carrying handles.

The paper reinforced tapes and reinforcement elements of this invention have improved repulpability, recyclability, compostability and biodegradability. Further, these reinforcement elements and paper reinforced tapes, despite being predominately paper, unexpectedly provide excellent container reinforcement properties and further can be used as opening tapes, closing tapes, tear tapes and carrying handles.

The invention features adhesive devices for holding objects (e.g., bone fragments) fixed with respect to each other.