Ethyl Corporation

Lewis C LoMaglio

Thomas H Hayes

Robert X Hafele

The edge of an interior lamina or laminae of a laminated sheet or film having three or more laminae is positively encapsulated to protect material enclosed by the laminated sheet or film from contacting and interacting with the edge of the interior lamina or laminae. To encapsulate the interior lamina or laminae, the edge of the laminated sheet or film is heated and the molten outer laminae are mechanically forced out and over the interior lamina or laminae to be covered, thereby positively encapsulating the edge of the interior lamina or laminae.

Edge sealing of laminate

A collapsible dispensing tube is manufactured continuously from a flat sheet or web which is formed into a cylinder having an overlapped seam which is fused together by heat. A single pressure pad containing an induction heating element applies pressure at the seam area while the seam area is heated. The pressure pad containing the source of induction heat is removed, the cylinder is advanced incrementally, and the cycle is repeated.

Method and apparatus for making collapsible dispensing tubes

A manually actuated trigger pump is adapted to be fitted on the neck of a container for dispensing a liquid therefrom. The pump includes a main housing with a trigger connected thereto, a flexible bladder which fits in the housing and is engagable by the trigger, and a nozzle which is attached to the housing. The trigger engages the bladder to pump fluid from the bladder outwardly through the nozzle.

Trigger actuated pump

A collapsible dispensing container having a laminated tubular body, the laminated tubular body including a metal foil lamination, a layer of a polyolefin on the outside of the metal foil lamination, and, on the inside of the metal foil lamination and on the outside of the polyolefin layer, a layer of a copolymer resulting from the polymerization of 100 parts by weight of (a) at least 50 percent by weight of at least one nitrile having the structure ##STR1## wherein R is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms, or a halogen, and (b) up to 50 percent by weight based on the combined weight of (a) and (b) of an ester having the structure ##STR2## wherein R.sub.1 is hydrogen, an alkyl group having from 1 to 4 carbon atoms or a halogen, and R.sub.2 is an alkyl group having from 1 to 6 carbon atoms, in the presence of from 1 to 40 parts by weight of (c) a copolymer of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and an olefinically unsaturated nitrile having the structure ##STR3## wherein R has the foregoing designation containing from 50 to 95 percent by weight of polymerized conjugated diene and from 50 to 5 percent by weight of polymerized olefinically unsaturated nitrile.

Collapsible dispensing tube

A finger-operated spray pump assembly including a compression chamber, a primary piston and a secondary piston slidably fitted inside the compression chamber, a spring fitted inside the secondary piston for urging the secondary piston toward the primary piston, and a valve slidably connected to the secondary piston.

Growing community of inventors

Baton Rouge, LA, United States of America

Lewis C LoMaglio