GB2240367A

GB2240367A - Container far semisolid adhesive

Info

Publication number: GB2240367A
Application number: GB9100603A
Authority: GB
Inventors: Kazuo Koizumi
Original assignee: O R K KK
Current assignee: O R K KK
Priority date: 1990-01-24
Filing date: 1991-01-11
Publication date: 1991-07-31
Also published as: GB9100603D0; JPH0397079U; KR910014282A

Abstract

A container for semisolid adhesive from which adhesive can be pushed out by a required quantity during use. This container comprises a screw thread dispensing mechanism 23, 31 which moves a piston 2 in the container and expells adhesive. The container and piston may have a noncircular cross-section, e.g. elliptical or quadrilateral. <IMAGE>

Description

CONTAINER FOR SEMISOLID ADHESIVE This invention relates to a container for a semisolid adhesive with synthetic rubber as the main ingredient, which is designed so that only the required quantity of the contents of the container may be dispensed during use.

In the case where a poster or a placard is fixed temporarily to the surface of a wall, for example, pushpins, adhesive tape or the like are used. However, pushpind will scratch the surface of a wall, and adhesive tape will soil the surface of a wall. In view of these defects, semisolid adhesive which sticks a poster, a placard or the like to the surface of a wall but does not leave marks on the surface of a wall when stuck paper is stripped from the wall, has been put to practical use.

Generally, semisolid adhesive sold on the market is packed in single units, to be used individually or as disclosed by the Japanese Utility Model Registration Application Publication No.

57-20571, lumps of semisolid adhesive, in a fixed quantity, are held between two sheets of continuous waxed paper.

Therefore, even when a very small quantity of semisolid adhesive is required for sticking, one lump of the fixed quantity is exhausted. Thus, waste of semisolid adhesive is unavoidable.

The object of the invention is to provide an adhesive container that dispenses only the required amount of adhesive each time the container is used.

In order to attain the above object, the present invention provides a container for semisolid adhesive comprising: a hollow main body; an axis of the main body; a dispensing hole in the main body; a piston slidable axially in the main body; a cavity defined by the interior of the main body and the piston, which cavity accepts adhesive to be dipensed; and a dispensing mechanism rotatably operable in use to drive the piston to dispense adhesive from the cavity through the hole.

Semisolid adhesive with synthetic rubber as the main ingredient is loaded into the cavity. By operation of the dispensing mechanism, preferably a screw rod engaging the piston, the piston is advanced to push out the required quantity of adhesive from the hole.

Since semisolid adhesive is held in a container as mentioned above, degradation of it can be prevented and it is easy to carry and use. Moreover, it is more economical to push out only the required quantity of semisolid adhesive each time the device is used.

Preferably, the dispensing mechanism comprises a manually rotatable wheel, a first threaded member coupled to the wheel and second threaded member coupled to the piston. The engaged threads will then produce axial movement of the piston if the wheel is rotated whilst being held in an axially stationary position.

Preferably, the area around the hole is adapted to aid the flow of adhesive during use. This is done by tapering the section of the main body toward the hole. The e piston may also have a matching shape in order to expell all the adhesive.

Preferably, the piston is a good fit in the main body and has sealing skirts to prevent leakage of the adhesive.

Preferably, the face of the piston in contact with the adhesive is unbroken. For example, the threaded member coupled to the wheel does not extend through the piston. In this way, it is ensured that the material in the cavity does not leak through the piston.

The nature and advantage of the present invention will be understood more clearly from the following description made with reference to the accompanying drawings, in which: Fig. 1 is a cross section of an embodiment showing a container for semisolid adhesive according to the present invention; Fig. 2 is a cross section of a different embodiment; Fig. 3 is an explanatory drawing of an embodiment with a different hole and Fig. 4 is an explanatory drawing of container main bodies of different shapes.

A container for semisolid adhesive according to the present invention is explained below on the basis of the illustrated embodiments.

In the drawings, reference numeral (1) designates a container main body. It is cylindrical in shape but can have such outer shapes as shown in Fig. 4. The container main body (1) is of cylindrical shape, with one end open and at the other end thereof, a hole for dispensing of adhesive. A cap (4) is fitted removably on the hole (11). The whole of the container main body or its inner surface maybe made of silicon resin or other material.

Alternatively, the inner surface maybe coated with silicon or other material so as to make the inner surface smooth to the touch, in each case prevent any adhesive from sticking to the inner surface of the container. A piston (2) which is substantially the same shape as the container main body in cross sectional is put into the container main body (1). This piston (2) has its peripheral surface (21) contacting the inner surface of the container main body (1). The piston (2) is slidable along the inside of the container main body (1). Part of the dispensing (expulsion) mechanism (3) is mounted on the piston (2), forming a protrusion (22). A screw thread (23) is made on the inner or outer circumferential surface of the protrusion (22). A screw rod (31) forms another part of the dispensing mechanism (3) and is screwed onto the screw thread (23) of the protrusion (22).A rotational operation wheel (33) of the expulsion mechanism (3) is provided at or exposed to the outside of the container main body (1) so as to make it possible to rotate the wheel (33) from the outside of the container main body (1). The expulsion mechanism (3) is confined to rotational movement in relation to the container main body 1, by means of circumferential groove (32) formed in the outer surface of the wheel (33) and a flange on the main body formed to fit into the groove. It can be appreciated that the groove may be formed in either the wheel or the container main body and the flange may also be formed on either part.

A semisolid a adhesive (5) to be filled in the container main body (1) is a mixture of synthetic rubber (main ingredient), adhesion accelerant, coloring agent, etc.

The piston is advanced by turning the operating wheel. The semisolid adhesive is pushed out from the hole (11) by the advancing piston (2). After the required quantity of semisolid adhesive (5) is pushed out of the container, it is kneaded to produce its adhesiveness.

It is possible to make both the area around the hole (15) and the piston (25) angular in shape as shown in Fig. 3 so that the contents of the container can be used up entirely, and the adhesive is dispensed with less force.

It will be seen that in the described embodiment of the present invention, semisolid adhesive filled in a cylindrical container is pushed out by the required quantity each time by moving a piston, with no loss of adhesive. The cylindrical container is easy to carry and use.

Claims

ClAIMS

1. A container for semisolid adhesive comprising: a hollow main body; an axis of the main body; a dispensing hole in the main body; a piston slidable axially in the main body; a cavity defined by the interior of the main body and the piston, which cavity accepts adhesive to be dispensed; and a dispensing mechanism rotatably operable in use to drive the piston to dispense adhesive from the cavity through the hole.

2. A container as claimed in claim 1 where the cavity is full of semisolid adhesive.

3. A container as claimed in either of the preceding claims where the dispensing mechanism comprises: a manually rotatable wheel; a first threaded member coupled to be rotated by the wheel; and a second threaded member coupled to the piston; the threads on the first and second members being engaged.

4. A container as claimed in any of the preceding claims wherein the cross sectional shape of the main body and the cross sectional shape of the piston are of quadrilateral, elipical, circular or compound form.

5. A container as claimed any of the preceding claims wherein the end face of the piston in contact with the semisolid adhesive and the area of the main body contiguous to the hole are adapted such that substantially all the semisolid adhesive may be dispensed through the hole.

6. A container as claimed in claim 5 wherein the cross sectional area of the main body reduces in proximity to the opening and the piston is formed to match the contour of the reduced main body section.

7. A container as claimed in any of the preceding claims wherein the face of the piston in contact with the semisolid adhesive is unbroken.

8. A container as claimed in any preceding claim wherein the piston is formed with an axially extending sealing skirt.

9. A container as claimed in any preceding claim wherein the hole forms a restriction in the main body inducing internal pressure in the cavity during use.

10. A container as claimed in any of the preceding claims wherein the main body is adapted to substantially prevent adhesive from sticking to the inner surface of said main body.

11. A container as claimed substantially herein before with reference to the accompanying drawings.