JP2685320B2 - Dispenser for dispensing solid substances that are partially removable by friction, especially solid adhesives - Google Patents

Abstract

A device for dispensing a solid material which can be locally removed by friction, especially a solid adhesive, having a sleeve (1) with lateral slots (2) and a piston (8) movable in the sleeve by means (12) arranged in the region of the slot and movable from outside to dispense the solid material from the sleeve, is intended to provide a system for storing and dispensing air-sensitive solid materials, especially adhesives, in the simplest possible manner, cheaply and easily handled. This is attained in that at least in the region of the slot (2) the sleeve is fitted with a flexible plastic film proof against the removable material and that the moving means consist of spring-loaded dogs (13) engaging in the slot (2) from outside.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tube having side opening slots and a means for moving within the tube by means of a transfer means arranged in the area of the slot and which can be manipulated from the outside to push the solid substance out of the tube. Dispenser for dispensing a partially frictionally removable solid substance, in particular a solid adhesive, comprising a possible plunger.

A dispenser of this type is described in JP-A-47-5780. In this known dispenser, the moving means is formed by a side grip fixed to the plunger and movable along the open slot, the movement of the plunger being able to push out the solid substance. However, there is the disadvantage that air can enter the open tube at any time through the open slot, which causes air-sensitive substances such as adhesives to dry and become unusable in the tube.

Applicant's similar dispenser "Pritt-Stick" is described in West German Patent 1817985. The dispenser consists of a closed tube with no side open slots, with a plunger mounted for movement by rotation of a screw spindle located along the longitudinal axis of the tube. This dispenser is relatively complex in construction, which makes it quite expensive for this type of disposable item, and requires the use of both hands to hold the tube with one hand and the rotating mechanism with the other. If it is not possible to use a dispenser, handling is relatively inconvenient.

On the other hand, the problem to be solved by the present invention is to provide a dispenser which can store and dispense air-sensitive solid substances, especially adhesives, at low cost and conveniently by very simple means. Especially.

According to the present invention, the above-mentioned object is, in the dispenser described at the beginning, providing a flexible plastic film impermeable to a removable substance to the tube from the outside, at least in the area of the slot, and arranging the moving means in the slot. The solution is by forming with a stud designed to resiliently engage within.

The dispenser of the present invention can store and dispense air-sensitive solid materials in a simple and inexpensive manner. The stud is pushed into the open slot by applying pressure from the outside with only one hand of the user, i.e. very conveniently, the plunger is gripped so that it is locked by the stud, and the solid material is moved by the stud and the plunger. Is pushed out of the tube. Although the tube basically has a slot, the plastic film surrounding the tube at least partially closes the tube, making the dispenser of the present invention suitable for air sensitive materials, especially solid adhesives. The flexibility of the film ensures that the film is not damaged by the indentation and movement of the studs, maintaining the tube closure.

One advantageous aspect of the invention is characterized in that the moving means is a slide ring having an inner stud and surrounding the tube. The predetermined shape of the slide ring, which is adapted to the outer surface of the tube, ensures that the studs are correctly placed in the open slots, and therefore is more convenient to use the dispenser with two fingers of one hand. This construction makes the dispenser much easier to handle, since the slide ring need only be pressed and moved at the end to be dispensed.

In another aspect of the invention, the studs are paired and the plunger is designed to be surrounded by the stud pair. This structurally simple arrangement facilitates the formation of a fixed connection between the stud and the plunger, which allows easy movement of the plunger in both directions along the length of the tube.

In another particularly preferred embodiment of the invention, the end surface of the stud has a concave shape and the contact surface of the plunger has a correspondingly convex shape. In this way too, a fixed connection between the stud and the plunger is formed particularly easily.
Transfer of force from the stud to the plunger during pressurization is particularly preferred due to the large contact area.

In another preferred embodiment of the invention, the entire tube is provided with a flexible plastic film from the outside. Complete enclosing of this tube simplifies manufacturing. In particular, it is also possible to print the product description on a plastic film.

Handling the dispenser can also be simplified by providing a stop in the open slot. After the move
Plungers can be fitted into these stops in the open slots so that the plunger and removable material are locked in place in the tube without permanent pressure on the side studs and dispenser. Is easy to use, that is, the solid material is easily removed by the application.

The invention is described below by way of example with reference to the accompanying drawings. The drawing shows an exploded perspective view of the dispenser of the present invention.

Solid material that can be partially removed by friction,
A dispenser, in particular for dispensing solid adhesive, comprises a tube 1 with side opening slots 2. In the illustrated embodiment, the cross section of the tube 1 is substantially elliptical, but may of course be circular or rectangular.

The tube 1 is completely surrounded from the outside by a flexible air-impermeable plastic film 3, which is shown in the figure by a break line 4. The flexibility of the film material allows the slot 2 to be engaged from the outside and this coating hermetically seals the open slot 2 of the tube 1.

The tube 2 has an upper open end 5 and the outer surface of the tube 1 is tapered via a peripheral edge 6 at the upper end 5 for receiving a closure cover 7.

A plunger 8 whose cross-sectional area substantially corresponds to the inner cross-sectional area of the tube 1 is designed for insertion into the open end 5. A site 9 having a convex shaped lateral contact surface 11 and having an opening 10 designed for insertion into the solid removable material from below is arranged perpendicular to the actual surface of the plunger 8. The structure of this plunger 8 is
To ensure a solid bond with a solid adhesive (not shown), the adhesive being shaped to completely fill the inside of the tube 1 before the first use of the dispenser.

Plunger 8 is tube 1 by slide ring 12
Moved along, the slide ring consists of two parts in the illustrated embodiment, but may of course also consist of one part. Slide ring 12 is completely tube 1
It is designed to have an inner stud 13 which surrounds the and which has a concave end surface.

The slide ring 12 is designed to be pushed up along the tube 1 and the stud 13 is designed to engage the open slot 2. When the slide ring 12 is located at the same height as the plunger in the tube 1,
Due to the pressurization of the slide ring 12 and the resulting engagement of the stud 13 with the side opening slot 2, a fixed connection results in a concave end surface 14 of the stud 13 and a convex contact surface 11 of the plunger 8.
Formed during. By moving the slide ring 12, the plunger 8 moves in the tube 1 and the solid substance is pushed out from the open end 5 of the tube.

A stop 15 is provided in the side opening slot 2 of the tube 1 to improve the handling of the dispenser. The plunger 8 is fitted into these stops when no further external pressure is applied to the studs 13 of the slide ring 12. In this way, the solid substance can be easily taken out by friction, for example, by applying the adhesive to the surfaces to be adhered, the adhesive can be taken out without slipping in the tube 1.

The plastic film 3 is flexible and impermeable to air, so that on the one hand, after closing with the closure cover 7, air cannot enter the tube 1 and the solid material inside the tube does not dry out. , On the other hand, the studs 13 allow the side-opening slots 2 without damaging the film 3.
Can be fully engaged with.

The contact surfaces of the stud and the plunger may be different, for example two studs may be provided on each side and the plunger may be enclosed between them when fitted into the open slot.

Claims (6)

(57) [Claims] 1. A tube having a side opening slot and a plunger arranged in the area of the slot and movable in the tube by means of a transfer means which can be operated from the outside to push the solid substance out of the tube. A dispenser for dispensing a partially removable solid substance by friction, in particular a solid adhesive, comprising a flexible plastic film impermeable to the removable substance, at least in the area of the slot (2). (3) is provided on the outside of the tube (1) and the displacement means are formed by studs (13) designed to be elastically engaged in the slots (2). Dispenser. 2. Dispenser according to claim 1, wherein the moving means are formed by a slide ring (12) having an inner stud (13) and surrounding the tube (1). 3. The studs are in pairs and the plunger is designed to be surrounded by the stud pairs.
Or the dispenser according to 2. 4. The end surface (14) of the stud has a concave shape,
Dispenser according to claim 1 or 2, wherein the contact surface (11) of the plunger (8) has a corresponding convex shape. 5. A flexible plastic film (3) is provided on the entire tube (1) from the outside.
The dispenser according to any one of 1. 6. Dispenser according to any of the preceding claims, wherein a stop is provided in the opening slot (2).