Bonding with foamed hot melt adhesives

Details Bonding with foamed hot melt adhesives Bonding with foamed hot melt adhesives

1979-01-25

1981-03-31

Gallagher, John J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

156 78, 252351, 264 453, 264 465, 264 50, 428322, 521908, 521911, B32B 518

Patent

active

042594022

ABSTRACT:
Foamed hot melt adhesives are made and employed by methods which offer significant advantages and economies. The method employs surfactant stabilizers in making hot melt adhesive foams which are very useful in bonding substrates with efficiency and superior bond strengths. Continuous and reliable foaming operations are achieved with a uniform quality and output of foamed materials. Hot melt adhesives are also capable of being foamed with relatively simple mechanical apparatus and under conditions which provide considerable savings of energy. The number of hot melts which can be foamed employing the present technique in a controlled manner is unlimited. The method of stabilization is conducted at low or ambient pressures and resulting stabilized hot melt adhesive gas dispersions may then be pumped with pressurization and dispensed with immediate foaming.

REFERENCES:
patent: 2323831 (1943-07-01), Menger et al.
patent: 2860377 (1958-11-01), Bernhardt et al.
patent: 3140266 (1964-07-01), Peticolas
patent: 3151427 (1964-10-01), Meissner et al.
patent: 3251092 (1966-05-01), Printz
patent: 3270032 (1966-08-01), Erner
patent: 3554932 (1971-01-01), Overcashier
patent: 3681253 (1972-08-01), Arthur et al.
patent: 3790510 (1974-02-01), Flannigan
patent: 3823104 (1974-07-01), Bondy et al.
patent: 4156754 (1979-05-01), Cobbs et al.

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