The present invention provides pre-applied contact adhesives that maintains strong cohesiveness over extended time and varied temperature conditions, while balancing low adhesiveness to other substrates. The pre-applied adhesives are applied onto paperboard, corrugated board, Kraft paper, paper, plastic film, glass, and are suitable as label, package, envelope, carton, case, box, label, bag, multilayer film, foil bag, bottle or band.

Resin composition comprises 35 to 59.9 parts by mass of a propylene polymer (A) satisfying below; 25 to 40 parts by mass of a soft propylene copolymer (B); 0.1 to 10 parts by mass of a polyolefin (C) containing a structural unit derived from an unsaturated carboxylic acid and/or a derivative thereof; and 15 to 30 parts by mass of an ethylene polymer (D) (provided that the total of (A), (B), (C), and (D) is 100 parts by mass), wherein an MFR measured at 230 C. and a load of 2.16 kg according to ASTM D-1238 is 7 g/10 min or more and 25 g/10 min or less, with each component satisfying certain requirements.

Resin composition comprises 35 to 59.9 parts by mass of a propylene polymer (A) satisfying below; 25 to 40 parts by mass of a soft propylene copolymer (B); 0.1 to 10 parts by mass of a polyolefin (C) containing a structural unit derived from an unsaturated carboxylic acid and/or a derivative thereof; and 15 to 30 parts by mass of an ethylene polymer (D) (provided that the total of (A), (B), (C), and (D) is 100 parts by mass), wherein an MFR measured at 230 C. and a load of 2.16 kg according to ASTM D-1238 is 7 g/10 min or more and 25 g/10 min or less, with each component satisfying certain requirements.

A method comprising providing a polymeric substrate having a melting point of from about 130 C. to about 190 C., and locating a material layer onto the substrate, wherein the material layer comprises one or more polymeric materials that liquefy upon exposure to temperatures of at least about 100 C., to blend with a softened portion of the polymeric substrate. Upon exposure of one or more of the substrate and the material layer to a stimulus, the temperature is increased in a predetermined temperature zone of one or more of the substrate and material layer to cause blending of the one or more polymeric materials of the material layer with the softened portion of the polymeric substrate.

A polyorganosiloxane hot melt adhesive composition includes a polyolefin-polydiorganosiloxane block copolymer, a polydiorganosiloxane, and a polyorganosilicate resin. The hot melt adhesive composition is useful in electronic device assembly processes.

A double-sided adhesive tape is provided, which includes a pressure-sensitive adhesive layer on a first side of the adhesive tape, a thermal bonding film layer on a second side of the adhesive tape, and a carrier layer interposing the thermal bonding film layer and the pressure-sensitive adhesive layer. A total thickness of the adhesive tape is 50-500 m.

A double-sided adhesive tape is provided, which includes a pressure-sensitive adhesive layer on a first side of the adhesive tape, a thermal bonding film layer on a second side of the adhesive tape, and a carrier layer interposing the thermal bonding film layer and the pressure-sensitive adhesive layer. A total thickness of the adhesive tape is 50-500 m.

A degradable EVOH high-barrier composite film, characterized in that the materials of various layers in the composite film all obtain approximately-consistent biodegradability by introducing biomass, and the additive amount of the additive master batch in the materials of each layer is controlled within the range of 0.3-15% of the total mass of the materials of the corresponding layer; the hydrophilic activity of the hydrophilic groups in the additive master batch should be greater than or equal to that of the hydrophilic groups in the materials of each layer; by adding the additive master batch, the mole ratios of the hydrophilic groups to carbon atoms of the materials of various layers tend to be consistent, namely, the bioactivities tend to be consistent, so that the degradation rates of the materials of various layers in the composite film tend to be consistent. The present invention makes contribution to obtaining approximately-consistent bioactivities and approximately-consistent biodegradation rates by balancing the mole ratios of the hydrophilic groups to carbon atoms in the materials of various layers, and the appearance, the functions and the physical and mechanical properties of a product remain unchanged.

The present disclosure includes articles formed from substrates with coatings, e.g., articles with heat-sealed coatings, and methods of preparation thereof. At least one of the coatings of the articles herein may serve as a water barrier. The coatings may comprise, for example, polymer(s), or polymer(s) and mineral(s), and may include one layer or multiple layers of such material(s) or combinations of materials. The articles herein may be used as containers, such as paper cups.

The present disclosure includes articles formed from substrates with coatings, e.g., articles with heat-sealed coatings, and methods of preparation thereof. At least one of the coatings of the articles herein may serve as a water barrier. The coatings may comprise, for example, polymer(s), or polymer(s) and mineral(s), and may include one layer or multiple layers of such material(s) or combinations of materials. The articles herein may be used as containers, such as paper cups.