Collapsible Metal Tubes
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Collapsible metal tubes from which a paste stored therein is squeezed
when the body portion is subject to plastic deformation by pressure have
been used to store various drugs and cosmetics.
the American portrait painter John Goffe Rand invented the squeezable or
collapsible metal tube.
comprises a body portion composed of metal walls susceptible of plastic
information, and a shoulder portion and neck portion connected to one
end of the body portion. The other end of the body portion of the
collapsible metal tube is sealed by folding and tightening and neck
portion is openably closed with a cap.
Collapsible tubes made of tin, tin alloy or aluminium as they are
commonly used for containing and delivering liquid, viscous or pasty
products such as tooth pastes are generally fitted with a lid so as to
be perfectly air tight while they are prepared for use, transported,
stored in ware houses in markets or shops.
collapsible metal tube, or the "compressible" tube, as it was sometimes
called, had been around for quite a few years.
majority of medical creams and ointments are marketed in collapsible
tubes made from aluminium or plastics which retain their original shape
after use, or special laminates based on aluminium foil.
method for manufacturing the collapsible metal tube comprises: Spray
coating a dispersion of fine spherical particles of a metal-adhesive
thermoplastic resin on the inside wall surface of a metal body portion
open at one end of a collapsible tube comprising the metal body portion
plastically deformed without difficulty, and a neck portion connected to
the other end of the body portion in this order, to form a coating
of uniform thickness and heating the coating to fuse the fine spherical
particles of the resin, thereby forming a metal-adhesive thermoplastic
plastic insert installed within the neck of a collapsible metal tube is
engaged by an inwardly extending protrusion on the underside of the
screw cap and is downwardly displaced within the top of the tube when
the cap is screwed onto the tube end.
collapsible metal tube adapted to prevent contamination of the product
extruded therefrom, comprising a nozzle at one end of the tube, a
conduit formed of non-contaminating mouldable conduit formed of
non-contaminating mouldable non-metallic plastic material located within
nozzle , at least a portion of the outer
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