FR2763058A1 - SHEET DISPENSER OF A ROLL PACKAGED PRODUCT - Google Patents

Abstract

The dispenser comprises a housing (1) with support means allowing the unwinding of the roll, a dispensing slot (6) and a cutting tool (8, 9) slidably mounted in a longitudinal groove (10) of the front wall ( 2b) of the housing.A part at least of the outer surface (14a) of the front wall between the distribution slot (6) and said groove (10) has anti-stick properties with regard to plastic films .Application in particular to plastic film dispensers-unwinders.

Description

"Distributor of sheets of a product packaged in a roll" This

  The invention relates to a dispenser for sheets of a product packaged in a roll, comprising a housing with support means allowing the unwinding of the roll, which generally consist of a tubular axis intended to be introduced into a hollow cavity of the roll - a cardboard sheath. , for example, on which the product is wound -, the axis then being suspended at its ends from the walls

sides of the housing.

  The latter is generally provided with a folding cover for the positioning of the roller and the extraction of the residual sheath after use of the roller. A distribution slot is provided on the front wall of the housing or between the upper edge of the front wall and the front edge of the cover, for the

  passage and guiding of the roll sheet.

  The dispenser targeted by the invention is capable of receiving any type of roller for household use of compatible dimensions, but it is more particularly intended for rolls of plastic film, for example made of polypropylene. Thin and extensible, such films are used in particular for the protection of food. Their ease of use is due to their qualities of easily reversible adhesion on most surfaces: bottom or walls of cooking vessels but also on themselves. These films are therefore self-sealing. The dispenser box designed for this type of plastic film includes a cutting tool, such as a blade mounted on a slider so that it can move along a longitudinal groove in the front wall of the box, to cut the film. plastic. Cutting is facilitated by the spontaneous immobilization of the plastic film on the front wall of the case, due to its qualities of adhesion which

thus maintain plaque.

  On the other hand, before being able to pull on the film to obtain a new sheet, the user must first peel it from the front surface to which it adheres, an operation all the more difficult since the roll is wide and the slot of distribution is placed high on the front wall of the housing, in other words that the adhesion surface of the film is large. In fact, the thin and extensible film tends to crease or deform under the effect of transverse traction at the

sense of flow.

  The object of the invention is therefore to facilitate the use of the film in a dispenser of the aforementioned type, that is to say a dispenser of sheets of a product packaged in a roll, comprising a housing with support means allowing the unwinding of the roller, a distribution slot and a cutting tool mounted to slide in a longitudinal groove of the

front wall of the housing.

  According to the invention, the dispenser is characterized in that at least part of the outer surface of the front wall between the dispensing slot and said groove has properties

  of anti-adhesion with regard to plastic films.

  The part of the film protruding from the housing after cutting a sheet can therefore be gripped without difficulty before pulling the roller again. In an alternative embodiment, said outer surface between the distribution slot and the groove in which the cutting tool operates has anti-adhesion properties in its upper part close to the distribution slot, the lower part located immediately above the throat allowing or

  promoting the adhesion of the packaged product.

  This arrangement is advantageous both for plastic films and for other products packaged in rolls such as aluminum foil. It allows immobilizing the roll from before cutting a sheet until the user detaches

  the end of the roller for new use.

  The end of the roller does not risk being entrained inside the housing by a rotation

untimely roll.

  Other features and advantages of the invention

  will appear again in the description which follows.

  In the accompanying drawings given by way of nonlimiting examples: - Figure 1 is a perspective view of a dispenser of the type concerned by the invention, the cover being raised to allow the elements of the housing to be distinguished; - Figure 2 is a perspective view of the dispenser of Figure 1, the cover being folded down and the cutting cursor visible; - Figure 3 is a sectional view along the plane III-III of Figure 2, on an enlarged scale. The distributor, of wall type, is in the form of a housing 1 molded from a plastic material such as polypropylene. It comprises a container 2 for receiving and supporting a roller (not shown) and a cover 3 hinged to the rear wall of container 2, both the container and the cover having on their surface

  internal ribs 21 suitable for ensuring rigidity.

  Once folded down in the closed position, the cover 3 covers by its side walls 3a the side walls 2a of the tank 2, and its front edge 4 practically joins the upper edge 5 of the front wall 2b of the tank 2, except for a space 6 forming distribution slot for

  the passage and guidance of the end of the roller.

  The front edge 4 of the cover is profiled to form a guide rail on which is engaged a groove or slide 7 formed at the upper part of a slider 8, which is provided at its lower part with a cutting blade 9 oriented towards the

housing 1.

  In addition to the cutting device carried by the cover 3, a longitudinal groove 10 is created in the lower part of the front wall 2b, parallel to the rail 4 to allow the blade 9 to move in a direction parallel to the axis XX 'of the housing. 2

and the roll in place.

  The upper edge 5 of the front wall 2b, or lower edge of the slot 6, is constituted by the external rounding of an insert 11, which will now be described as a preferred embodiment of the invention. Referring to Figure 3, the element 11, of inverted U cross section, is molded in a plastic material sufficiently elastic to be able to be engaged on the end edge 18 of the front wall 2b. The element 11 has a rear wall 12 extending parallel to the internal face 13 of the front wall 2b of the housing and pressing against the latter by an end 12a in L. The front wall 14 of the element 11 s' extends parallel to the outer face 15 of the front wall 2b of the housing, up to a groove 16 formed in the latter parallel and above the groove 10 in which

  moves the blade 9 of the cutting tool.

  The lower end 17 of the wall 15 is shaped so as to offer a slope engaging under a slope complementary to the groove 16, the element 11 thus being fixed by clipping on the front wall 2b as soon as the edge of end 18 abuts at the bottom of the U of element 11. The wall 14 rests on the other hand on the face 15 of the housing by a longitudinal rib 19 of its inner face, so that the end edge 18 of the front wall 2b is pinched between the two elastic walls 12 and 14 of the U-shaped element, at 12a and

in 19.

  According to a preferred embodiment of the invention, the element 11 is molded from a plastic material such as polypropylene or a polyamide loaded with a solid lubricant such as a molybdenum disulphide (MoS2). The plastic film of the roll in use does not

  will therefore not be able to adhere to the surface 14a.

  In a second embodiment, this outer surface 14a of the element 11 is coated with a material

  non-stick such as polytetrafluoroethylene (PTFE).

  In a third embodiment, the element 11 is made of a material - preferably a plastic material - antistatic, in other words not being charged

not in static electricity.

  Another aspect of the invention is constituted by the external surface 20 of the zone situated immediately above the groove 10, that is to say comprised, in the embodiment of FIG. 3, between the two grooves 10 and 16: unlike the surface 14a, this zone 20 again allows the adhesion of the plastic film because it does not present a solution of continuity with the surface

overview of tank 2.

  The front wall 2b thus has, in its embodiment according to the invention, advantages which will appear from the first use of the dispenser: The user pulls through the dispensing slot 6 on the end of the plastic film in service in the dispenser , until the edge at

  cutting occurs substantially at the level of the throat 10.

  The area 20 located immediately above serves as a reference in this regard, and a simple application of the film on

  this area - not treated to be antistatic -

  causes the film to adhere. The user can then move the cursor 8 provided with the blade 9 from one end to the other of the housing, to cut the film. During a new use, it suffices to peel off the end of the film from zone 20 to be able to pull on the roller and repeat the operation. Takeoff is facilitated by the low height of this zone 20, which is just sufficient to fix the free edge of the film. It will be noted that the extreme edge of the latter remains floating at the upper part of the groove 10, the curved wall of which is not very favorable for adhesion.

spontaneous film.

  Of course, the invention is not limited to the exemplary embodiments which have just been described and numerous modifications can be made to these.

without going beyond its framework.

  Thus, the non-stick outer surface could be formed by a simple strip attached to the front wall of the housing, by gluing or any other suitable means. A wood veneer, material

  antistatic, could be considered.

  The adhesion properties of zone 20 can be determined according to the destination of the distributor: if it is designed exclusively for plastic films, the adhesion properties by electrostatic charge of the plastics in which these are generally molded distributors will prove sufficient. For other products packaged in rolls such as aluminum foil, zone 20 may be coated with a light adhesive product, with

reversible bonding effect.

Claims (9)

  1. Distributor of sheets of a product packaged in a roll, comprising a box (1) with support means allowing the unwinding of the roll, a distribution slot (6) and a cutting tool (8, 9) mounted so as to slide a longitudinal groove (10) of the front wall (2b) of the housing, characterized in that at least part of the outer surface (14a) of the front wall between the distribution slot (6) and said groove (10 ) has non-stick properties with respect to plastic films. 2. Dispenser according to claim 1, characterized in that said outer surface (14a) has anti-adhesion properties in its upper part close to the distribution slot (6), the lower part (20) located immediately at - above the throat (10) allowing or promoting the adhesion of the conditioned product.   3. Distributor conforms to one of the   claims 1 or 2, characterized in that said   non-stick surface (14a) is the external face of a part (11) attached to the front wall (2b) of the housing.   4. Distributor according to claim 3, characterized in that said insert (11) has a U-shaped cross section and is made of an elastic material allowing its engagement in U inverted on the   lower edge (18) of the distribution slot (6).   5. Distributor conforms to one of the   claims 1 to 4, characterized in that said   non-stick surface (14a) is that of a wall (14)   made of a plastic loaded with a solid lubricant.   6. Distributor according to claim 5, characterized in that the solid lubricant is a molybdenum disulfide (MoS2).   7. Distributor conforms to one of the   claims 1 to 4, characterized in that said   non-stick surface (14a) is produced by applying a polytetrafluoroethylene (PTFE) coating directly or indirectly to the wall front (2b) of the shoemaker.   8. Distributor conforming to one of the   claims 1 to 4, characterized in that said   non-stick surface (14a) derives its anti-stick properties   adhesion of an antistatic material.   9. Distributor conforms to one of the   Claims 1 to 8, characterized in that the slot   distribution (6) consists of a space between the front edge (4) of a folding cover (3) and the upper edge (5) of the front wall (2b), said front edge (4) and upper (5 ) constituting the upper (4) and lower (5) edges respectively of the distribution slot (6).