Tackified amorphous-poly-alpha-olefin-bonded structures
First Claim
1. A bonded structure comprising:
- a first subtrate;
a second substrate; and
an adhesive composition bonding the first substrate and the second substrate to one another at an add-on level between about 0.5 and about 25 grams/meter2, wherein the bonded structure has a dynamic peel strength greater than 215 grams per 25 millimeters and has no burn-through visual defects greater than about 1 millimeter, and the adhesive composition comprises;
about 75 to about 99% by weight amorphous poly-alpha-olefin, about 1 to about 5% by weight tackifier, andzero to about 20% combined weight of one or more additives selected from the group consisting of color pigments, fragrances, fillers, block copolymer compatibilizers, waxes, and oils, the fillers being selected from the group consisting of titanium dioxide, carbon black and calcium carbonate,the amorphous poly-alpha-olefin, tackifier and one or more additives together constituting about 100% by weight of the adhesive composition,the tackifier consisting of a C5 hydrocarbon tackifier and having a molecular weight of about 2000 Daltons or less.
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Accused Products
Abstract
A bonded structure including one or more substrates bonded together with a tackified amorphous poly-alpha-olefin adhesive composition. One method of making such a bonded structure is carried out by applying a tackified amorphous poly-alpha-olefin adhesive composition to one or more substrates at a temperature of about 170 degrees Celsius or lower, and joining the substrates to themselves or to one another. The bonded structure has a dynamic peel strength between about 400 and about 1000 grams per 25 millimeters. The bonding efficiency of the bonded structure renders the bonded structure suitable for incorporation into a variety of articles, including personal care products, health/medical products, and household/industrial product, for example.
63 Citations
28 Claims
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1. A bonded structure comprising:
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a first subtrate; a second substrate; and
an adhesive composition bonding the first substrate and the second substrate to one another at an add-on level between about 0.5 and about 25 grams/meter2, wherein the bonded structure has a dynamic peel strength greater than 215 grams per 25 millimeters and has no burn-through visual defects greater than about 1 millimeter, and the adhesive composition comprises;about 75 to about 99% by weight amorphous poly-alpha-olefin, about 1 to about 5% by weight tackifier, and zero to about 20% combined weight of one or more additives selected from the group consisting of color pigments, fragrances, fillers, block copolymer compatibilizers, waxes, and oils, the fillers being selected from the group consisting of titanium dioxide, carbon black and calcium carbonate, the amorphous poly-alpha-olefin, tackifier and one or more additives together constituting about 100% by weight of the adhesive composition, the tackifier consisting of a C5 hydrocarbon tackifier and having a molecular weight of about 2000 Daltons or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25, 26)
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19. An article comprising:
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a first subtrate; a second substrate; and an adhesive composition bonding the first substrate and the second substrate to one another at an add-on level between about 0.5 and about 25 grams/meter2 thereby forming a bonded structure, wherein the bonded structure has a dynamic peel strength greater than 215 grams per 25 millimeters and has no burn-through visual defects greater than about 1 millimeter, the article is selected from the group consisting of personal care products, health/medical products, and household/industrial products, and the adhesive composition comprises; about 75 to about 99% by weight amorphous poly-alpha-olefin, about 1 to about 5% by weight tackifier, and zero to about 20% combined weight of one or more additives selected from the group consisting of color pigments, fragrances, fillers, block copolymer compatibilizers, waxes, and oils, the fillers being selected from the group consisting of titanium dioxide, carbon black and calcium carbonate, the amorphous poly-alpha-olefin, tackifier and one or more additives together constituting about 100% by weight of the adhesive composition, the tackifier consisting of a C5 hydrocarbon tackifier and having has a molecular weight of about 2000 Daltons or less. - View Dependent Claims (27)
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20. An article comprising:
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a film; a nonwoven web; and an adhesive composition bonding the film and the nonwoven web to one another at an add-on level between about 2 and about 5 grams/meter2 thereby forming a bonded structure, wherein the bonded structure has a dynamic peel strength greater than 215 grams per 25 millimeters and has no burn-through visual defects greater than about 1 millimeter, the article is selected from the group consisting of personal care products, health/medical products, and household/industrial products, and the adhesive composition comprises; about 75 to about 99% by weight amorphous poly-alpha-olefin, about 1 to about 5% by weight C5 hydrocarbon tackifier, and zero to about 20% combined weight of one or more additives selected from the group consisting of color pigments, fragrances, fillers, block copolymer compatibilizers, waxes, and oils, the fillers being selected from the group consisting of titanium dioxide, carbon black and calcium carbonate, the amorphous poly-alpha-olefin, tackifier and one or more additives together constituting about 100% by weight of the adhesive composition, the tackifier consisting of a C5 hydrocarbon tackifier and having a molecular weight of about 2000 Daltons or less. - View Dependent Claims (28)
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Specification