JPH0858293A - Refill cartridge of stick-type adhesive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rotatably mount a spindle with threads by incorporating central threads engaged with the spindle at a center of an original stick-like adhering implement and incorporating a central pace for introducing the spindle in an adhesive component disposed in a cartridge sleeve. SOLUTION: After a refill cartridge is disposed at an outside casing of a stick-like adhesive, a threaded spindle 13 is engaged with female threads at a center of a holder 1. Then, a plastic rib 4 is broken. As a result, a sealing film of an upper end of a cartridge sleeve 8 is released. Thereafter, the holder 1 can rotate in the casing of the original stick-like adhering implement by the aid of the spindle 12 together with the adhesive component fixed to the holder 1. A central pace of a circular section is formed to receive the spindle 13 at an inside of the adhesive component.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refill cartridge for stick-type adhesives which is replaceably mounted with the aid of a central threaded spindle.

[0002]

2. Description of the Prior Art Stick-type adhesives, which are adapted to be rolled out of a protective casing and used for many different purposes at home or in the office, have a holding device at one end. Injection molded. For example,
It has a nut called a cup, which is hollow to receive the adhesive component and to fix the adhesive component when set by an annular retaining groove formed in the outer wall of the nut. . In addition, the nut has a hollow cylindrical cavity, which has a thread on its inside that engages a threaded spindle, so that when using a stick-type adhesive the outer protective casing It can be rolled out and rolled in after use to prevent the gel structure of the adhesive component from drying out.

As an alternative, the retaining device has a structure of protrusions pointing in one direction towards the side of the adhesive component. The interstices of the protrusions are filled with the injected adhesive component, so that the adhesive component is fixed to the holding device by the adhesive force generated by the large surface area of the protrusions.

The more adhesive is used, the nut with the inserted adhesive must be brought out and reinserted at a corresponding number of revolutions.

After complete use of the adhesive component, the entire outer casing of the stick-type adhesive must be discarded along with the threaded spindle and retainer. This is because in the case of such a commercially available stick-type adhesive, refilling the adhesive component is not considered.

The following remarks should be mentioned in particular as the main drawbacks of such known stick-type adhesives.

Whenever the adhesive component is completely used, the entire outer casing of the stick adhesive must be discarded, along with the threaded spindle and retainer. This is because, in the case of the stick type adhesive designed in this way, which corresponds to the above-mentioned conventional technique,
This is because refilling the adhesive component is not considered. However, commercially available stick-type adhesives made of consumable plastics such as polyethylene, polypropylene or polystyrene present a significantly higher cost factor that ultimately costs the consumer to abandon them all. Besides being necessary, such abandonment is environmentally problematic.

As a result, the prior art extends the useful life of conventional stick-type adhesives while at the same time limiting the associated costs, and resisting the desired transport and storage of interest to the trade and consumer. There is a need for a device that properly creates the potential for this new device to be significantly easier to handle. In addition, of course, there is a need to provide environmental protection for non-negligible disposal problems even with new equipment.

[0009]

SUMMARY OF THE INVENTION The present invention allows a threaded spindle to be inserted and rotatably attached to the outer casing of a stick-type adhesive with minimal effort after using the adhesive component. These problems are solved by providing a commercially available stick adhesive refill cartridge that doubles the useful life of the individual stick adhesive and significantly reduces the amount of waste discarded.

The present invention relates to a stick-type adhesive refill cartridge rotatably mounted with the aid of a central threaded spindle, in the inside open end of the cartridge sleeve, a projection, a cup shape for the adhesive component. A holding device with a nut of
Together with the cartridge sleeve, form an integrally molded part,
The holding device has a central thread that engages the central threaded spindle of the original stick-type adhesive and the adhesive component located in the cartridge sleeve has a central empty space for introduction of the threaded spindle. The refill cartridge is characterized in that it has a place.

The present invention comprises a cartridge sleeve that is filled with an adhesive component and is made of readily disposable consuming plastic, preferably polypropylene. After being filled with the adhesive component, the ends of the cartridge sleeve are sealed by a film made of a disposable plastic, preferably polypropylene, which can be easily discarded, the removable and diffusion resistant type being preferred. In addition, when inserting the refill cartridge into the refilling machine, it is possible to place an insert with a central pin under the base part of the cartridge sleeve, so that when refilling, the rotating spindle from the original sleeve to be refilled A central void that can enter is formed in the adhesive component. The cartridge sleeve is spread at the end of the base part up to a diameter corresponding to the outer diameter of the original stick adhesive, so that the upper rim of said original stick adhesive is separated from the minimum degree of play. , Can be neatly enclosed by the base portion of the cartridge sleeve. The cartridge sleeve is preferably cylindrical. In the area of the aforementioned base part of the cartridge sleeve, the underside of the above-mentioned holding device, which is adapted to contain the adhesive component, is mounted substantially in line with the lower end of the wall of the cartridge sleeve. As a result, the central threaded spindle of the original stick adhesive can engage the female threads of the holding device after removing the above mentioned sealing film at the base end. As mentioned above, the inner diameter of the cartridge sleeve in the region of the base end is designed so that the entire refill cartridge can be placed in the open outer casing of the original stick adhesive. To facilitate this,
The base portion has at least one guide passage or at least one guide lug or both or one or more similarly suitable devices, and the original stick-type adhesive has corresponding parts.

[0012] In particular, according to the invention, the cartridge sleeve, the base portion with the widened inner diameter and the above-mentioned holding device for the adhesive component are in the form of a one-piece molding made from one piece in one operation. To take. It is provided with at least two, preferably at least three and particularly preferably six plastic ribs between the cartridge sleeve and the base end level retainer. These are designed as predetermined break points, so that after the central threaded spindle of the original stick-type adhesive is engaged, the holding device filled with the adhesive component is It can be moved vertically with the aid of a central threaded spindle that is open to the outside and can rotate clockwise or counterclockwise.

After placing the refill cartridge in the outer casing of the stick-type adhesive, after engaging the threaded spindle with the central female thread of the holding device, the plastic rib is broken, so that the sealing film at the upper end of the cartridge sleeve is broken. After that, the holding device can be rotated in the outer casing of the original stick-type adhesive with the aid of the central threaded spindle together with the adhesive component fixed to the holding device. Inside the adhesive component, a central cavity of circular cross section is preferably formed for receiving the central threaded spindle.

As a result, the stick-type adhesive is filled with new adhesive components and can be immediately reused.

In this case, the only waste material to be discarded is the cartridge sleeve and the two sealing films. The overall weight of the disposable material is significantly reduced. The manufacture of a refill cartridge which takes the form of one molded part in the method according to the invention, on the one hand, facilitates the overall manufacture of the individual parts required by the invention and allows the final assembly of the refill cartridge to be carried out, It can be implemented relatively inexpensively, while offering great advantages to the end consumer in terms of transport, storage and final handling of refill cartridges, as compared to the corresponding handling of prior art stick adhesives. Have an effect to produce.

In particular, during the refill operation by the end user,
The great handling convenience of the refill cartridge according to the invention, which does not come into contact with the actual adhesive component, gives the advantages mentioned above with respect to the prior art mentioned above and in terms of costs in terms of consumer interests.

The adhesive component preferably comprises polyvinylpyrrolidone. However, the exact components of the adhesive component of the stick adhesive are not relevant to the use of the present invention, as long as the material from which the stick adhesive is made is compatible with it.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a vertical cross-section of a refill cartridge according to the invention in the region of the base end (corresponding to B in FIG. 4 (a)). The holding device (1) comprises a protrusion (3) by means of which the adhesive component is fixed to the holding device (1). The holding device (1) is connected to the cartridge sleeve (8) with the aid of six thin plastic ribs (4) so that the holding device (1) and the cartridge sleeve (8) together form a one-piece molding. The refill cartridge is fitted with three guide fillets (5) that correspond to the array of guide fillets (12) of the original stick adhesive sleeve (14) (see Figure 5). A catch attached to the end of the retaining device (1) that always aligns at the beginning of the refilling operation so that the three passages are exactly on the guide fillet (12) of the original stick-type adhesive sleeve (14). Guaranteed by the lugs (2). The retaining device (1) has concentric female threads (6) which, after placing the refill cartridge on the original stick-type adhesive sleeve (14), screw it onto the original stick-type adhesive sleeve (14). It is possible to engage with the attached spindle (13) (see FIG. 5 (a)). In this case, the upper and lower ends of the cartridge sleeve (8) are formed with annular surfaces (7), which act to seal both ends of the refill cartridge with the aid of an attached sealing film. The stop (10) when interacting with the stop (11) of the base part of the original stick adhesive (14)
Prevents the threaded spindle (13) of the original stick adhesive sleeve (14) or concentric female thread (6) from over-rotating when the holding device (1) is in its lowest position. It is advantageous to provide two stops (10) and two stops (11).

FIG. 2 shows a horizontal sectional view of the cartridge sleeve (8) according to the invention and a horizontal sectional view of the holding device according to the invention. Shown in detail is the capture lug (2), which is the stick-type adhesive sleeve (1) from which the three passages (9) of the holding device (1) were originally.
4) the guide fillet (12), the six plastic ribs (4) as indicated by the predetermined dashed lines as already described with reference to FIG. 1, and the guide fillet (14) of the original stick adhesive sleeve (14). It is guaranteed to always be aligned at the beginning of the refilling operation so as to exactly align with the guide fillet (5) corresponding to 12).

FIG. 3 shows the details of the stop 10 in the vertical cross-section indicated by (mark C in FIG. 2). The stop (1) at the base of the original stick adhesive sleeve (14)
The stop (10) interacting with 1) has the holding device (1) in the lowermost position and its lower surface is in contact with the rotatable base part of the original stick-type adhesive sleeve (14). When originally stick type adhesive sleeve (1
Prevent the threaded spindle of 4) or the concentric female thread (6) from over rotating.

FIGS. 4A and 4B are horizontal sectional views corresponding to the vertical sectional view of the refill cartridge according to the present invention. A corresponding array of guide fillets (12) of the original stick adhesive sleeve (14) and the original stick adhesive, especially when the guide fillet (5) is regenerated and the holding device (1) is in the lowest position. The configuration corresponding with the stop 10 (see FIG. 5) interacting with the stop (11) of the base part of the sleeve (14) is the threaded spindle (13) or retaining of the original stick adhesive sleeve (14). It has the effect of preventing excessive rotation of the concentric female thread (9) of the device (1). Also shown are two annular surfaces, which are respectively formed on the upper and lower ends of the cartridge sleeve (8) and which serve to seal the two ends of the refill cartridge with the aid of a sealing film to be attached.

FIGS. 5 (a) and 5 (b) are vertical cross-sectional views of the cartridge sleeve (8) according to the present invention arranged on the original stick type adhesive sleeve (14), and the corresponding horizontal direction. FIG. The concentric threaded spindle (13) of the original stick adhesive sleeve (14) engages the internal thread of the retainer (1), thereby initiating the deflection of the plastic ribs (FIGS. 1 and 2). And holding device with threaded spindle (13)
It is opened by the vertical movement caused by the rotation of the. The original stick adhesive sleeve (14) is then filled with the adhesive component taken from the cartridge sleeve (8) for reuse, and the stick adhesive component is firmly attached to the holding device (1). Is fixed.

FIG. 6 shows an insert member with a central pin (15) which engages from the base part of the refill cartridge sleeve (8) according to the invention into the central cavity of the holding device (1). As a result, during refilling, it forms a central cavity in which the rotary spindle can move from the original sleeve to be refilled.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a refill cartridge holding device of the present invention.

FIG. 2 is a horizontal sectional view of a cartridge sleeve and a holding device according to the present invention.

FIG. 3 is a vertical sectional view of a stop portion.

4 (a) and 4 (b) are horizontal sectional views corresponding to the vertical sectional view of the refill cartridge according to the present invention.

5A and 5B are a vertical sectional view and a horizontal sectional view corresponding thereto when the cartridge sleeve according to the present invention is arranged on the original stick-type adhesive.

FIG. 6 is a side view of a moving insert having a central pin.

[Explanation of symbols]

 1 Holding Device 4 Plastic Rib 5 Guide Fillet 6 Female Thread 8 Sleeve 9 Passage 13 Spindle 14 Stick Type Adhesive Sleeve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Wilhelm, Belhan Germany Baden-Baden, Kohrenbeck, Germany 10 (72) Inventor Berner, Panter Germany Aheln, Benz-Meisel-Strasse, 4 (72) Inventor Ralph, Schneeden Haan, Germany Baden-Baden, Markgraaf-Christian-Strasse, 34

Claims (14)

[Claims] 1. A stick-type adhesive refill cartridge replaceably mounted with the aid of a central threaded spindle, wherein a protrusion (3) for the adhesive component is provided at the open end inside the cartridge sleeve (8). A holding device (1) provided with the holding device (1) forming a unitary molding with the cartridge sleeve (8), the holding device (1) comprising a central threaded spindle () of the original stick-type adhesive. 13) has a central screw (6) that engages,
Refillable cartridge, characterized in that the adhesive component arranged in the cartridge sleeve (8) has a central cavity for the introduction of the threaded spindle (13). 2. The cartridge sleeve is connected to the holding device (1) with the aid of two, preferably three, particularly preferably six plastic ribs (4) arranged on the inner wall of the sleeve. The refillable cartridge according to claim 1, wherein the refillable cartridge is a refillable cartridge. 3. The refill cartridge according to claim 1, wherein the plastic rib (4) is set as a predetermined breaking point between the cartridge sleeve (8) and the holding device (1). 4. Refillable cartridge according to any one of the preceding claims, characterized in that the cartridge sleeve (8) has a base portion (16) with a catch lug (2). 5. Refillable cartridge according to any one of the preceding claims, characterized in that the cartridge sleeve (8) has an inner diameter which widens at the level of the base portion (16). 6. Refill according to any one of claims 1 to 5, characterized in that the longitudinally arranged guide fillet (5) is arranged on the inner wall of the cartridge sleeve (8). cartridge. 7. The cartridge sleeve (8) according to claim 1, wherein the upper and lower ends of the cartridge sleeve (8) are provided with annular surfaces (7) for fixing a sealing film.
Refillable cartridge according to item. 8. The holding device (1) has at least one stop (10) at its lower end, the stop (10) comprising:
Stop of the base part of the original stick adhesive (11)
The refill cartridge according to claim 1, wherein the refill cartridge interacts with the refill cartridge. 9. The holding device (1) has a groove (9) on its outer circumference, which groove (9) interacts with a corresponding guide fillet (12) of the base part of the original stick-type adhesive. The refill cartridge according to claim 1, wherein the refill cartridge is a cartridge. 10. The projection (3) of the holding device is arranged annularly and / or linearly.
Item 10. A refill cartridge according to any one of items 1 to 9. 11. Refillable cartridge according to any one of claims 1 to 10, characterized in that the sleeve (8) of the cartridge is a cylindrical sleeve. 12. An insert member comprising a central pin, said insert member engaging a central cavity of a retaining device (1) from a base portion (16) of a sleeve (8) of a cartridge, As a result, the central pin forms, in the adhesive component, a central cavity into which the rotary spindle can enter from the original sleeve to be refilled when refilling. Refillable cartridge. 13. The cartridge sleeve (8), the base portion (16) with an enlarged inner diameter, the retainer (1) with a protrusion (3), and the sealing film are made of disposable plastic, preferably polypropylene. Item 13. The refill cartridge according to any one of Items 1 to 12, wherein the refill cartridge is a cartridge. 14. Refillable cartridge according to any one of the preceding claims, characterized in that the wall of the cartridge sleeve (8) has a thickness of 0.3 to 0.8 mm.