FR2897793A1 - Moving knife for adhesive tape roller, has main plane placed directly in contact with non-adhesive side of adhesive tape and bordered on sides by lateral guides constituting rail for orienting displacement of knife around roller - Google Patents

Abstract

The knife (A) has a main plane (1) having a width approximately equal to that of an adhesive tape roller (B) and placed directly in contact with non-adhesive side of an adhesive tape (6). The plane is bordered on its two sides by lateral guides (3a, 3b) that constitute a rail for orienting the displacement of the knife around the roller by being in contact with the roller. The plane has a blade (7) positioned at an end so as to cut the tape. The plane is provided with an orifice of sufficient dimension and shape for freely passing the tape.

Description

MOBILE KNIFE FOR ROLL-UP ADHESIVE TAPE.

  Adhesive tapes are generally commercially available in the form of rolls of various diameters and widths.

  Whatever the application for which it is intended, for example in the office for binding or repairing documents or on the building site for the fixing of a floor covering, the adhesive tape roll always has a major drawback: the difficulty of grasping its end when it is folded and pressed on the roll.

  Indeed, especially when it comes to translucent or transparent adhesive tape, finding the position of the end of the ribbon is already a difficult operation but once this tracking accomplished, it remains to 15 guess in what direction the tape has was rolled up to finally unroll and take a piece.

  Most often, this operation is to rotate the roller in his fingers and try to feel a difference in thickness by rubbing a fingernail on successive generatrices of the roller. These manipulations are very often the cause of impatience and irritation especially for users with 20 short nails.

  The end of the tape and the direction of winding being clearly marked, it is then necessary to take off carefully the tape on the desired length, being careful not to tear it, which happens frequently. Sometimes, the ribbon runs anarchically only over a portion of its width, which makes it necessary to repeat the preliminary scraping operations.

  In order to prevent such inconveniences to the detriment of the adhesive tape roll, the manufacturers have devised an accessory, more often called snail for its distant resemblance to the gastropod of the same name. This utensil, usually made in two parts and injected plastic material, consists of a housing in which the adhesive tape is placed around an axis so as to rotate freely. This casing is extended by a tangential portion long enough to present a few centimeters from the roller and parallel to the axis thereof, a generally metal blade and overmolded with small teeth to facilitate the cutting of the ribbon. 35

  So when the user holds in one hand, the snail utensil and pulls on the end of the ribbon with his other hand, he just has to fold the ribbon over the snail's blade to get the section ribbon.

  The snail utensil is made in such a way that the end of the roll ribbon remains glued after cutting, in a small area provided for this purpose in front of the metal blade. Thus, the ribbon remains taut between, on the one hand, the roller from which it is drawn and, on the other hand, the zone preceding the cutting blade. This makes it easier for the user to grip the ribbon for another use. The end of the ribbon of the roll being no longer plated on the roll, the identification and detachment operations of the end before use are thus eliminated.

  As and when used, that is to say successive samples of pieces of ribbon, the ribbon roll is unwound by rotating freely about the axis inside the casing of the snail utensil 15 .

  The major disadvantage of the snail device lies mainly in its size which makes it difficult to store and that regardless of the diameter of the roller. Indeed, as and when use, the diameter of the adhesive tape roll decreases inside the housing of the utensil which does not change in any way. This fact precludes the storage of the roll of adhesive tape in a pocket, a drawer or a toolbox for example and some users prefer to ban the snail utensil to use only rolls free of any accessory.

  Other disadvantages come to alter the interest of this accessory, such as, for example, the cost of production which involves the cost of molding and assembling two pieces, the cost of mounting the roll in the utensil and the various costs of production. packaging, storage and transport related to the volume of the whole.

  The present invention of the moving knife for roll adhesive tape has for main object to overcome these disadvantages while maintaining a great ease of use.

  According to the preferred embodiment of the invention, the movable knife consists of a single active part, most often manufactured by plastic injection and intended to be placed directly on the peripheral surface of the roll of adhesive tape, to facilitate gripping the end of said adhesive tape and cutting it.

  According to the preferred embodiment of the invention, the moving knife consists mainly of a main plane of slightly greater width and close to that of the adhesive tape roll. It is preferably thin and short in length to better accommodate the various diameters of commercial tape rolls. Placed in direct contact with the non-adhesive side of the ribbon, it is usually bordered on each of its longest sides by a lateral guide whose mission is to form a rail to guide its movement around the roller by staying in contact with this one.

  According to the preferred embodiment of the invention, in use, the movable knife moves on the outer peripheral surface of the adhesive tape roll while still remaining integral therewith. Its displacement is guided by the lateral guides which may for example be constituted by two small plates perpendicular to the axis of the roller, coming to bear on one and the other of the lateral planes of the roller, themselves perpendicular to the axis of the roll.

  According to the preferred embodiment of the invention, the main plane of the moving knife is provided with a hole of sufficient shape and size to let the adhesive tape taken off the roll, from bottom to top and through the main plane of the knife. mobile.

  According to the preferred embodiment of the invention, the main plane of the movable knife has at one end of its length and over all or part of its width, a blade positioned to cut the adhesive tape by simple application on said blade of said adhesive tape. Thus, when the user pulls on the end of the adhesive tape already passed from bottom to top through the main plane of the moving knife of the invention, he chooses the length of the desired piece of adhesive and folds the adhesive tape over the blade of the moving knife to obtain the cut of the ribbon at the desired place.

  According to the preferred embodiment of the invention, the movable knife has at the front of the cutting blade, a specially shaped area, size and position to allow the adhesive tape to stick to this area before the cutting blade. be cut by application on the blade. Thus, when the adhesive tape is cut by application on the blade of the moving knife, the end of the adhesive tape of the roll remains stuck on the area that precedes the blade, leaving a length of ribbon removed from the roll sufficient to facilitate the gripping of the tape for another use.

  According to the preferred embodiment of the invention, when the user pulls on the end of the adhesive tape to lift it off the roll to a desired length, the moving knife moves automatically on the roll, in the direction of the unwinding and under the effect of the force exerted on it by the non-adhesive outer face of the adhesive tape passing through the movable knife. Thus, each time a strip of adhesive tape is taken, the movable knife moves around the roll a distance equivalent to the length removed until the roll is exhausted.

  According to the preferred embodiment of the invention, the size of the roll of adhesive tape equipped with the moving knife of the invention decreases as and when it is used, unlike devices currently available commercially, the The size remains unchanged from the beginning to the end of the use of the tape roll.

  According to the preferred embodiment of the invention and unlike fixed devices, the same mobile knife can equip rolls of tape of different lengths and therefore different diameters. Only changing the thickness of the roll and thus the width of the tape requires the use of a moving knife of different dimensions. According to another embodiment of the invention, the lateral guides are of such shape and dimensions that, once the mobile knife is installed on the peripheral plane of the roller, the lateral guides exert on each lateral plane of the roller a sufficient axial force to keep the movable knife integral with the roll. For example, the lateral guides are not perpendicular to the main plane of the movable knife but form with it an acute enough angle to cause a pincer effect.

  According to a different embodiment of the invention, the lateral guides of the moving knife are shifted out of the main plane and towards the separation zone of the ribbon. This particular position of the lateral guides makes it possible to prevent the moving knife from temporarily leaving the roll which it equips when the user pulls on the end of the ribbon to pick up a piece of it. Indeed, when the user pulls on the end of the tape to take the length of his choice, the resultant forces applied tends to tilt the movable knife backwards and momentarily disengage the roll. Although this has no effect on the operation of the movable knife of the invention, which will remain attached to the ribbon that passes through it and will resume its place automatically when the user applies the ribbon on the cutting blade, the offset side guides allow with the movable knife to tilt back while being guided and maintained between the side guides especially when they exert a clamp effect gripping the roller.

  According to another embodiment of the invention, the movable knife has a longer length to make it possible to have, for example at the front or at the rear of the ribbon passage or the cutting blade, a surface sufficient for the application of decorative or advertising marking. According to a different embodiment of the invention, the movable knife has lateral guides of shape and surface such that they allow the application of decorative or advertising marking without impairing the proper operation of the moving knife.

  According to another embodiment of the invention, the moving knife is of special shape to represent for example an object, an animal or a playful character to customize the roll of adhesive tape and cause for example the collection effect, without harming the smooth operation of the moving knife.

  According to one embodiment of the invention, the movable knife has an integral and foldable portion to cover all or part of the movable knife after use. This integral part acts as a cover to protect the blade by ensuring greater durability and for example maintain the end of the tape pressed on the surface provided for this purpose in front of the cutting blade.

  According to another embodiment of the invention, the movable knife has in addition to the orifice provided for the passage of the ribbon through the main plane, a recessed area located before the cutting zone for pressing on the roller the end of the roll ribbon. To take a piece of tape, the user who has grabbed the end of the tape pulls back to take off the desired length of tape. The moving knife moves around the roll a distance close to the desired length of ribbon. Before making the cut, the user pushes one of his fingers the ribbon to the roller where it passes over the recessed area. The portion of the ribbon located before the cutting blade therefore adheres to the roller passing through the recessed area. To cut the desired piece of ribbon, the user will only have to fold the ribbon on the cutting blade and take the piece. This feature of the invention makes it possible to well plate and immobilize the moving knife on the roll before cutting and thus keep the movable knife immobilized between two uses. Indeed, without the gluing tape on the roll at the recessed area of the moving knife, the movable knife would remain attached to the end of the tape because it is glued to the surface provided for this purpose on the moving knife but it could partially disengage the roll which can be embarrassing. This last characteristic thus ensures a perfect application of the moving knife on the roll while facilitating the gripping of the end of the ribbon. The end of the ribbon passing over the recessed area being pushed and brought into contact with the roll before cutting, the end of the ribbon after cutting remains stuck on the part of the movable knife provided for this purpose, thus facilitating gripping For another use According to another embodiment of the invention, the movable knife has in addition to the orifice provided for the passage of the ribbon through the main plane, a recessed area located before the cutting zone 25. allowing the end of the roll ribbon to be pressed onto the roll. The movable knife is provided with a movable and foldable lid-forming integral part which, when closed after use, presses the end of the adhesive tape of the roll onto the roll by pushing the adhesive tape through the hollowed-out area. means of an arrangement of the inner surface of the foldable movable portion. Thus, the movable knife of the invention remains perfectly plated on the roll, held stationary in position.

  The following description, with reference to the accompanying drawings by way of non-limiting examples, will make it possible to understand how the invention can be put into practice. Figure 1 shows the movable knife of the invention through which passes the adhesive tape before cutting.

  Figure 2 shows a roll of adhesive tape provided with the movable knife of the invention, the tape passing through the movable knife and ready to be cut.

  Figure 3a is a sectional view of a movable knife installed on a roll of adhesive tape, at the time when the tape is pulled for a sample. This figure shows the movements.

  Fig. 3b is a sectional view of a movable knife installed on a roll of adhesive tape at the moment when the tape having been pulled over a certain length is ready to be cut.

  Figure 4 is a perspective view of a movable knife reserving after the cutting blade a surface for decorative or advertising marking. FIG. 5 is a perspective representation of a moving knife embellished with a decoration allowing the personalization of the roll of adhesive tape and the collection effect, here a flower.

  Fig. 6 is a perspective view of a movable knife of the invention having side guides specially adapted for carrying decorative or advertising marking.

  Figure 7 shows in perspective a movable knife of the invention provided with lateral guides offset from the main plane.

  Figure 8 shows in partial perspective a movable knife provided with lateral guides with an elastic effect to allow clamping of the moving knife on the lateral planes of the ribbon roll.

  Figure 9 shows in perspective a movable knife of the invention provided with a movable integral part effecting folding lid.

  FIG. 10 shows in perspective the moving knife of the invention having in addition to the ribbon passage opening, a recessed area for pressing and immobilizing the movable knife on the ribbon roll by pushing the end of the ribbon. adhesive tape through the recessed area.

  Figure 11 shows in section a movable knife with recessed area and how to immobilize it on the ribbon roll by pushing a finger the end of the ribbon through the recessed area. Figure 12 is a sectional representation of a movable knife with recessed area, immobilized on the ribbon roll by means of a foldable movable portion acting as a lid.

  The present invention of the moving knife for roll adhesive tape has the main object of associating with a roll of adhesive tape (B) a small utensil (A) which is very compact in order to facilitate the gripping of the end of the tape (6). ) at each sampling and cutting a chosen length of said ribbon (6).

  According to the preferred embodiment of the invention, the movable knife (A) consists of a single active part, most often made by plastic injection and intended to be placed directly on the peripheral surface of the ribbon roll. adhesive (B).

  According to the preferred embodiment of the invention, the movable knife (A) consists mainly of a main plane (1) of slightly greater width and close to that of the adhesive tape roll (B). It is preferably thin and short in length to better accommodate the various diameters of the commercial tape rolls. Placed in direct contact with the non-adhesive side of the ribbon (6), it is usually bordered on two of its sides by a lateral guide (3a-3b) whose mission is to constitute a rail to guide its movement around the roll (B) while remaining in contact therewith. (see fig 1)

  According to the preferred embodiment of the invention, in use, the movable knife (A) moves on the outer peripheral surface of the adhesive tape roll (B) while still remaining integral therewith. Its displacement is guided by the lateral guides (3a-3b) which may for example be constituted by two small plates (3a-3b) perpendicular to the axis of the roller (B), coming to bear on one and the other lateral planes (4a-4b) of the roll (B), themselves perpendicular to the axis of the roll. (see FIG. 2) According to the preferred embodiment of the invention, the main plane (1) of the movable knife (A) is provided with an orifice (5) of a shape and size sufficient to allow the adhesive tape to pass through ( 6) detached from the roll (B), from bottom to top and through the main plane (1) of the movable knife (A). (see Fig. 1) According to the preferred embodiment of the invention, the main plane (1) of the movable knife (A) has at one end of its length and over all or part of its width, a blade ( 7) positioned to cut the adhesive tape (6) by simple application on said blade (7) of said adhesive tape (6). Thus, when the user pulls on the end of the adhesive tape (6) already passed from bottom to top through the main plane (1) of the movable knife (A) of the invention, he chooses the length of the piece of adhesive (6) desired and fold the adhesive tape (6) on the blade (7) of the movable knife (A) to obtain the cutting of the tape (6) at the desired location. (see fig 1 - 3a - 3b)

  According to the preferred embodiment of the invention, the movable knife (A) has at the front of the cutting blade (7), an area (8) of shape, size and position specially defined to allow the ribbon adhesive (6) to stick on this area (8) before being cut by application on the blade (7). Thus, when the adhesive tape (6) is cut by application on the blade (7) of the moving knife (A), the end of the adhesive tape (6) of the roll (B) remains stuck on the area (8) that precedes the blade (7), leaving a length of tape (6) detached from the roll (B) sufficient to facilitate the gripping of the tape (6) for another use. (see Fig. 1 - 3a) According to the preferred embodiment of the invention, when the user pulls on the end of the adhesive tape (6) to peel it off the roll (B) to a desired length, the knife mobile (A) moves automatically on the roller (B), in the direction of unwinding and under the effect of the force exerted on it by the non-adhesive outer face of the adhesive tape (B) passing through the movable knife (A) ).

  Thus, each time a length of adhesive tape (6) is taken, the movable knife (A) moves around the roller (B) for a distance equivalent to the length removed until the roll (B) is exhausted. (see fig 3a)

  According to the preferred embodiment of the invention, the size of the adhesive tape roll (B) equipped with the movable knife (A) of the invention decreases as and when it is used, unlike the devices currently available in commerce, whose size remains unchanged from the beginning to the end of the use of the tape roll.

  According to the preferred embodiment of the invention and unlike fixed devices, the same mobile knife (A) can equip rolls of adhesive tape (B) of different lengths and therefore different diameters. Only changing the thickness of the roll (B) and therefore the width of the tape (6) requires the use of a movable knife (A) of different dimensions.

  According to another embodiment of the invention, the lateral guides (3a-3b) are of shape and dimensions such that, once the moving knife (A) is installed on the peripheral plane of the roller (B), the lateral guides ( 3a-3b) exert on each lateral plane (4a-4b) of the roller (B) an axial force sufficient to keep the movable knife (A) integral with the roller (B). For example, the lateral guides (3a-3b) are not perpendicular to the main plane (1) of the movable knife (A) but form with it an acute enough angle to cause by elastic effect a pincer effect. (see FIG. 8) According to a different embodiment of the invention, the lateral guides (12) of the moving knife (A) are shifted out of the main plane (1) and towards the detachment zone of the ribbon (6). This particular position of the lateral guides (12) makes it possible to prevent the movable knife (A) from temporarily leaving the roll (B) which it equips when the user pulls on the end of the ribbon (6) to take off one piece. Indeed, when the user pulls on the end of the tape (6) to take the length of his choice, the resultant forces applied tends to tilt the movable knife (A) backwards and momentarily disconnect of the roll (B). Although this has no effect on the operation of the movable knife (A) of the invention, which will remain attached to the ribbon (6) which passes through it and will resume its place automatically when the user will apply the ribbon (6) on the blade for cutting (7), the offset lateral guides (12) allow the movable knife (A) to tilt backwards while being guided and held between the lateral guides (12), especially when they exert a gripping clamp effect the roll (B). (see fig 7)

  According to another embodiment of the invention, the movable knife (A) has a longer length to allow for example to be arranged at the front or rear of the ribbon passage (5) or the cutting blade (7), a surface (9) sufficient for the application of decorative or advertising marking. (see fig 4)

  According to a different embodiment of the invention, the movable knife (A) has lateral guides (11) of shape and surface such that they allow the application of a decorative or advertising marking without impairing the proper operation of the knife mobile (A). (see fig 6)

  According to another embodiment of the invention, the movable knife (A) is of special shape to represent for example an object, an animal or a playful character (10) to personalize the roll of adhesive tape (B) and to provoke by for example, the collection effect, without affecting the proper functioning of the moving knife (A). (see fig 5) According to one embodiment of the invention, the movable knife (A) has a fixed and foldable portion (15) to cover all or part of the movable knife (A) after use. This integral part (15) acts as a cover to protect the blade (7) by guaranteeing a better durability and for example maintaining the end of the tape (6) pressed on the surface (8) provided for this purpose in front of the cutting blade (7). (see fig 9)

  According to another embodiment of the invention, the movable knife (A) has in addition to the orifice (5) provided for the passage of the tape (6) through the main plane (1), a recessed area (14) before the zone (8) and the cutting blade (7) for pressing the end of the tape (6) on the roller (B). To take a piece of tape (6), the user who has grabbed the end of the tape (6) pulls the tape (6) backwards. The moving knife (A) moves around the roller (B). Before making the cut, the user pushes one of his fingers the tape (6) to the roller (B) at the location of the recessed area (14). The portion of the ribbon (6) located before the cutting blade (7) and the zone (8) thus adheres to the roller (B) passing through the recessed area (14). To cut the desired piece of tape (6), the user will only have to fold the tape (6) on the cutting blade (7) and take the piece. This feature of the invention makes it possible to well plate and immobilize the moving knife (A) on the roll (B) before cutting and thus keep the moving knife (A) immobilized between two uses. Indeed, without the gluing of the ribbon (6) on the roller (B) at the recessed area (14) of the movable knife (A), the movable knife (A) would remain attached to the end of the ribbon (6). because it is glued to the surface (8) provided for this purpose on the movable knife (A) but it could partially disengage the roller (B) which can be annoying. This last feature thus ensures a perfect application of the moving knife (A) on the roller (B) between two samples, while facilitating the gripping of the end of the tape (6). The tape (6) passing over the recessed area (14) being pushed and brought into contact with the roll (B) before cutting, the end of the tape (6) after cutting remains stuck on the part (8) mobile knife (A) provided for this purpose, thus facilitating the grip for another use. (see figs 10 and 11)

  According to another embodiment of the invention, the movable knife (A) has in addition to the orifice (5) provided for the passage of the tape (6) through the main plane (1), a recessed area (14) before the zone (8) and the cutting blade (7) for pressing on the roller (B) the end of the tape (6) of the roller (B). The movable knife (A) is provided with a movable and foldable integral part (15) acting as a cover which, when closed after use, press the end of the adhesive tape (6) of the roll (B) onto the roll (B) by pushing the adhesive tape (6) through the recessed area (14) by means of a fitting (16) of the inner surface of the folding movable part (15). Thus, the movable knife (A) of the invention remains perfectly plated on the roll (B), held stationary in position. (see fig 12)

Claims (12)

  A rolling knife for adhesive tape roll, characterized in that it is attached and directly associated with the outer peripheral surface of the adhesive tape roll (B), on which it moves as and when the adhesive tape is taken (6). (see fig   2). 2. Roll knife for mobile adhesive tape according to claim 1, characterized in that it has means for cutting and removing pieces of tape (6) and means for facilitating the identification and gripping of the end. adhesive tape (6) remaining on the roll (B) after cutting. (see fig 1).   3. Roller adhesive tape knife according to claims 1 and 2, characterized in that it is traversed from bottom to top by the adhesive tape (6) of the roller (B) which it is associated, at the location of an orifice (5) provided for this purpose on its main plane (1). (see fig 1).   4. Roll knife for mobile adhesive tape according to any one of the preceding claims, characterized in that it is guided in its movement on the outer peripheral surface of the roller (B) with which it is associated, by two lateral guides (3a -3b) bearing on the lateral planes (4a-4b) of the roller (B), themselves perpendicular to the axis of the roller (B). (see fig 2).   5. Roll knife for mobile adhesive tape according to any one of the preceding claims, characterized in that it can be associated without modification or adaptation to rolls of adhesive tape (B) of the same width and of different diameters.   6. mobile knife for roll adhesive tape according to any one of the preceding claims, characterized in that it is maintained associated with the outer peripheral surface of the roller (B) by the opposite pressure of its lateral guides (3a-3b) on the outer lateral planes (4a-4b) of the roller (B) operating by clamping effect. (see fig 8). 30   7. mobile knife for adhesive tape roll according to any one of the preceding claims, characterized in that it is provided with offset lateral guides (12) out of its main plane (1) and to the area of separation of the adhesive tape (6), in order to prevent it from being detached from the roll (B) in the event of a rearward tilting caused by the resultant of the forces applied during the traction carried out by the user on the ribbon (6) for the removal of a piece of ribbon (6). (see fig 7) .25   8. mobile knife for adhesive tape roll according to any one of the preceding claims, characterized in that it is specially arranged to allow the affixing of decorative or advertising marking on a portion (9) of its main plane ( 1) or on its lateral guides (11). (see figs 4 and 6).   9. mobile knife for adhesive tape roll according to any one of the preceding claims, characterized in that it has on all or part of its main plane (1) or its lateral guides (11) the relief representation of a object, animal, or character (10) for the purpose of personalizing the adhesive tape roll (B) with which it is associated. (see fig 5).   10. Roll knife for adhesive tape roll according to any one of the preceding claims, characterized in that it has a movable and foldable integral part (15) covering all or part of its main plane (1). (see fig 9). 15   11. mobile knife for tape adhesive roll according to any one of the preceding claims, characterized in that it has at one point of its main plane (1), a zone (14) allowing by the pressure of a finger, to contact through said area (14), the adhesive surface of the end of the tape (6) detached from the roller (B) with the non-adhesive outer peripheral surface of the roller (B). (see fig 11). 20   12. Mobile knife tape adhesive roll according to any one of the preceding claims, characterized in that it has a movable and foldable integral part (15) covering all or part of its main plane (1) and having on its interior surface of a special arrangement allowing, when closing said foldable portion (15) to contact through the area (14) 25 of the movable knife, the adhesive surface of the end of the strip (6) peeled off of the roll (B) with the non-adhesive outer peripheral surface of the roll (B). (see fig 12). 30 10 35