[0001] This invention relates to a container, and particularly to a container comprising
a hollow body having a base and a side wall defining an opening, and a closure for
the opening.
[0002] Cosmetic creams have traditionally been packaged in double-walled containers, such
a construction facilitating the provision of a container, such as a jar, in which
the closure, when closing the opening, lies flush with the outer surface of the body.
Further, such a construction facilitates the use of different materials for the inner
and outer surfaces of the body. For example, a material such as polypropylene compatible
with the ingredients of cosmetics can be used for the inner wall, while a material
such as polystyrene providing a more acceptable surface from the point of view of
finish, feel and compatibility with printing, can be used for the outer wall.
[0003] However, the traditional double-walled container for cosmetics is now falling into
disuse, not least because of a belief that they constitute what is called "deceptive
packaging".
[0004] Thus, there is a need for a new construction of a container offering the above discussed
advantages of double-walled containers but without such a construction.
[0005] According to the present invention a container comprising a hollow body having a
base and a side wall defining an opening, and a closure for the opening, is characterised
in that the side wall is of single thickness, there being a sleeve closely fitted
over the side wall, and the closure having a depending portion fitting over a portion
of the side wall of the body and lying flush with the outer surface of the sleeve.
[0006] The container of this invention thus provides the advantages of traditional double-walled
containers in that different materials such as polypropylene and polystyrene can be
used for the body and sleeve respectively, with the closure being of the same material
as the sleeve, while the objections against the traditional construction are overcome
in that the interior and exterior dimensions of the container are closer than with
a double-walled container of traditional construction.
[0007] Preferably the sleeve is an injection moulding whereby it can have a pleasing smooth
outer surface.
[0008] The closure can be a screw cap, there being complimentary threads on the inner surface
of the depending portion of the closure and on the underlying portion of the side
wall of the body.
[0009] Preferably means are provided for locking the sleeve in position on the side wall
of the body, such as interlocking formations on the inner surface of the sleeve and
on the outer surface of the side wall of the body.
[0010] Means can be provided to inhibit rotation of the sleeve about the body such as serrations
on the outer surface of the side wall of the body and on the inner surface of the
sleeve.
[0011] Alternative means for positively locating the sleeve on the body may be adopted,
such as cooperating screw threads on the inner surface of the sleeve and the outer
surface of the side wall of the body.
[0012] The sleeve may be transparent and decorative, and informational material may be visible
therethrough. For instance, a printed label may be inserted between the sleeve and
the body.
[0013] The sleeve may be in either the same colour as the body or may be in a contrasting
colour.
[0014] The invention will now be described by way of example with reference to the drawing
which shows a container embodying the invention, the left hand side being shown in
section.
[0015] The container shown is circular in cross- section and comprises a hollow body 1 and
a closure 2. The body 1 comprises a base 3 and a side wall 4 defining an opening,
the base 3 being - indented upwards centrally.
[0016] The side wall 4 has screw threads 5 which cooperate with corresponding threads 6
on the inner surface of a depending portion 11 of the closure 2.
[0017] The side wall 4 also has a pair of different size circumferential ribs 7 and 8 immediately
below the closure 2, the larger rib 7 lying above the smaller rib 8.
[0018] A sleeve 9 is a close fit over the side wall 4 of the body 1, the sleeve 9 having
a circumferential groove 10 in its inner surface in which the rib 8 on the side wall
4 engages.
[0019] In assembly, the sleeve 9 is slid over the side wall 4 of the body 1 from the base
end until the groove 10 receives the rib 8 and the leading edge of the sleeve 9 abuts
the rib 7.
[0020] Means (not shown) such as serrations are present on the inner surface of the sleeve
9 and on the outer surface of the side wall 4 to inhibit mutual rotation of the sleeve
and body.
[0021] The sleeve 9 and the closure 2 are formed of polystyrene, suitably by injection moulding.
[0022] The base 3 and side wall 4 constituting the body 1 of the container are formed from
polypropylene.
1. A container comprising a hollow body (1) having a base (3) and a side wall (4)
defining an opening, and a closure (2) for the opening, characterised in that the
side wall (4) is of single thickness, there being a sleeve (9) closely fitted over
the side wall (4), and the closure (9) having a depending portion (11) fitting over
a portion of the side wall (4) of the body (1) and lying flush with the outer surface
of the sleeve (9).
2. A container as claimed in Claim 1, characterised in that the closure (2) is a screw
cap, there being complimentary threads (6,5) on the inner surface of the depending
portion (11) of the closure (2) and on the underlying portion of the side wall (4)
of the body (1).
3. A container as claimed in Claim 1 or Claim 2, characterised by means for locking
the sleeve (9) in position on the side wall (4) of the body (1).
4. A container as claimed in Claim 3, characterised in that the means for locking
comprises a cicrumferential rib (8) on the outer surface of the side wall (4) of the
body (1) and a corresponding groove (10) in the inner surface of the sleeve (9), which
groove (10) receives the rib (8).
5. A container as claimed in Claim 4, characterised in that the outer surface of the
side wall (4) of the body (1) is formed with a further circumferential rib (7) against
which an end of the sleeve (9) abuts.
6. A container as claimed in any preceding claim, characterised by means to inhibit
rotation of the sleeve (9) about the body (1).
7. A container as claimed in Claim 6, characterised in that the means for preventing
rotation comprises serrations on the outer surface of the side wall (4) of the body
(1) and in the inner surface of the sleeve (9).
8. A container as claimed in Claim 4 or Claim 6, characterised in that said means
comprises cooperating screw threads on the inner surface of the sleeve (9) and on
the outer surface of the side wall (4) of the body (1).
9. A container as claimed in any preceding claim, characterised in that the sleeve
(9) is transparent.
10. A container as claimed in any preceding claim, characterised in that the body
(1) is of polypropylene and the sleeve (9) is of polystyrene.