FR2969585A1 - MULTIPARTICAL BOTTLE WITH STRUCTURE ALLOY AND METHOD FOR PRODUCING THE SAME - Google Patents

Abstract

Bottle-type bottle (1) having a relatively rigid outer structure (2) forming a housing, consisting of a side wall (4), a bottom (5) and a neck (6), and inside which is arranged a deformable bag (3) relatively flexible relative to the housing (2), containing a product to be dispensed, in connection with a dispensing member (not shown), characterized in that at least a portion of the rigid structure forming the housing (2) comprises at least one recessed area (7) crossing the wall, and at least one solid continuous zone (8), to constitute a lightened and rigid frame both around the flexible bag (3)

Description

The present invention relates to a bottle of the pocket type comprising a relatively rigid external structure, forming a housing, consisting of a side wall, a bottom and a neck, and inside which is disposed a deformable pocket, relatively flexible relative to the housing, containing a product to be dispensed, in connection with a dispensing member.

This type of bottle, widely used in the pharmaceutical or cosmetics industry, is intended to contain liquid or pasty products.

However, these flasks have the disadvantage of requiring the implementation of a large amount of plastic material, especially at the outer housing. This generates a significant greenhouse gas emission over its entire life cycle.

According to the Kyoto Protocol directives, states are required to reduce their greenhouse gas emissions. In this perspective, it has already been proposed to reduce the thickness of the walls of the rigid case of the bottle, but the technological limits are reached for the cosmetics market or pharmacy.

It has also been proposed to delete purely and simply said rigid case while retaining only one pocket, but this one being necessarily flexible, it does not offer the qualities of mechanical strength, especially during use.

According to a first phase of the inventive step, a compromise was sought between the two extreme solutions mentioned above.

The object of the present invention is to remedy all these drawbacks and concerns for this purpose a pocket-type bottle comprising a relatively rigid external structure, forming a box, consisting of a side wall, a bottom and a neck, and inside which case is arranged a deformable pocket, relatively flexible relative to the housing, containing a product to be dispensed, in connection with a dispensing member, characterized in that at least a portion of the rigid structure forming the housing comprises at less a recessed area through the wall, and at least one continuous solid zone, to form a lightened frame and stiff at a time, around the flexible pouch.

The advantages according to the invention are multiple. The tests have shown that it is possible to achieve a reduction in weight of up to 40% and allow the recycling of material falls from the cuts made on the housing, to obtain the recessed areas. This results in a sharp reduction in greenhouse gas emissions.

The invention also relates to the features which will emerge during the following description, which should be considered in isolation or in all their possible technical combinations. This description given by way of non-limiting example, will better understand how the invention can be made with reference to the accompanying drawings in which: Figure 1 shows a front view of a rigid box bottle, lightened according to the production method of the invention.

FIG. 2 represents a view from above of the bottle according to FIG. 1. FIG. 3 represents a side view of the bottle according to FIG. 1, after rotation of 90 ° about its axis.

FIG. 4 represents a front view of a bottle with a rigid casing, lightened according to an alternative embodiment of the invention. FIG. 5 represents a view from above of the bottle according to FIG. 4.

Figure 6 shows a side view of the bottle according to Figure 4, after rotation of 90 ° about its axis. FIG. 7 represents a perspective view of the bottle according to FIGS. 4 to 6. The bottle generally designated in the figures may be of the "airless" type. It comprises a relatively rigid external structure 2.2A, forming a housing, consisting of a side wall 4,4A, a bottom 5,5A and a collar 6,6A, and within which case is provided a deformable pocket 3, 3A, relatively flexible with respect to the case 2,2A, containing a product to be dispensed, in connection with a dispensing member (not shown).

The dispenser member may be: atmospheric pump type with air intake in place of the sample taken, pump-type "Airless" without air intake, type closure cap with closure.

According to the essential characteristic of the invention, at least a portion of the rigid structure forming the housing 2,2A comprises at least one recessed zone 7,7A crossing the wall, and at least one continuous solid zone 8,8A, to constitute a frame lightened and stiff at a time, around the flexible pouch 3,3A.

In general, as shown in the figures as a whole, the reinforcement constituting the rigid case 2,2A of the bottle 1,1A comprises a plurality of recessed areas 7,7A, of different or identical size and shape, alternating with the solid areas 8,8A, symmetrically or otherwise, to obtain a rigid mesh, ensuring the minimum mechanical properties of said vial 1,1A. According to a simplified embodiment shown in Figures 1 to 3, the continuous solid zone 8 of the armature constituting the rigid housing 2 extends between the neck 6 and the bottom 5, on one of the generatrices of the bottle 1 .

According to an alternative embodiment not shown, the rigid housing 2 comprises at least two solid zones 8, opposite, delimiting two complementary recesses 7.

According to the concrete example of embodiment of Figures 1 to 3, the rigid housing 2 comprises four solid zones 8, opposed in pairs, defining four complementary recesses 7. The recesses 7 are here in the form of an ellipse.

The bottle 1A shown in Figures 4 to 7 differs essentially from the previous one according to Figures 1 to 3 in that the recesses 7A, although elliptical also, are in number, size and different arrangement.

The invention also relates to the method for producing a vial 1 or 1A which has just been described, the recesses 7.7A are obtained according to the following phases. production, in the same manufacturing process by coextrusion blowing, of a solid structure 2.2A rigid housing, without recesses 7.7A, and its flexible pouch 3,3A - detachment of the flexible pouch 3,3A by relative to the frame constituting the rigid case 2.2A, - cutting of the recesses 7.7A, - repositioning the flexible pouch 3.3A against the inner walls of the frame constituting the rigid housing 2.2A.

This last operation can be carried out by pressurizing the air pocket 3,3A.

The invention also relates to the method for producing a vial 1 or 1A which has just been described, the recesses 7.7A are obtained according to the following phases. embodiment by injection molding or by extrusion blow molding of a rigid structure (2,2A) with a solid structure, without recesses (7,7A), - cutting of the recesses (7,7A), production of a flexible pouch by a method injection blow molding or extrusion blow molding (3, 3A), positioning of the flexible bag (3.3A) in the hollow rigid case (2.2A).

This last operation can be carried out by pressurizing the air pocket 3,3A.

The aforementioned detachment operation of the flexible pouch 3,3A with respect to the solid structure rigid case 2,2A is effected by a pressure difference between the flexible pouch 3,3A and said case 2,2A, before cutting the recesses. 7,7A.

In another way, the detachment operation of the flexible pouch 3,3A with respect to the solid structure rigid case 2,2A is effected by vibrating said case 2,2A, under an ultrasonic frequency, before cutting out recesses 7.7A.

Or again the detachment of the flexible pouch 3,3A with respect to the rigid case 2,2A is obtained by a mechanical action on said case 2,2A, before cutting the recesses 7,7A.

Regarding the cutting of the recesses 7.7A in the wall 4,4A, it can be done by vibration. In this case, a sonotrode forming a mask, delimiting the outline of the blank, is applied to the case 2.2A. The frequency of the vibrations can be in the field of the ultrasound.

The advantage of an ultrasonic cutting is that the heat created by the vibrations on a rigid part allows the cutting of the case 2,2A, without reaching the pocket 3,3A which is flexible and interacts little with the ultrasonic waves .

But the cutting of the recesses 7.7A can also be performed by laser radiation or by mechanical cutting, or by means of a hot cutting tool. The tests have shown that good results were obtained when the surface of the recesses 7.7A30 represents at least 18% of the total surface of the frame constituting the rigid housing 2, 2A, uncut.

The pocket bottle with hollow case is decorated with a heat-shrink sleeve or a label.

Claims (16)

REVENDICATIONS1. Bottle-type bottle (1,1A) having a relatively rigid outer structure (2,2A) forming a housing, consisting of a side wall (4,4A), a bottom (5,5A) and a neck (6,6A) ), and inside which housing is arranged a deformable bag (3.3A), relatively flexible relative to the housing (2.2A), containing a product to be dispensed, in connection with a dispensing member (not shown), characterized in that at least a portion of the rigid structure forming the housing (2,2A) comprises at least one recessed area (7,7A) passing through the wall, and at least one continuous solid area (8,8A), for to constitute a frame lightened and rigid at the same time, around the flexible pocket (3, 3A). 2. Bottle according to claim 1, characterized in that the armature constituting the rigid housing (2,2A) of the vial (1,1A) comprises a plurality of recessed areas (7,7A) of different size and shape or identical, alternating with the solid areas (8,8A), symmetrically or not, to obtain a rigid mesh, ensuring the minimum mechanical properties of said bottle (1, 1A). 3. Bottle according to one of claims 1 or 2, characterized in that the continuous solid zone (8) of the armature constituting the rigid housing (2) extends between the neck (6) and the bottom (5), on one of the generatrices of the bottle (1). 4. Bottle according to one of claims 1 to 3, characterized in that the rigid housing (2) comprises at least two solid zones (8), opposite, delimiting two complementary recesses (7). 5. Bottle according to one of claims 1 to 3, characterized in that the rigid housing (2) comprises four solid areas (8), opposite two by two, defining four complementary recesses (7). 6. Process for producing a vial (1,1A) according to one of claims 1 to 5, characterized in that the recesses (7,7A) are obtained according to the following phases. production, in the same manufacturing process by coextrusion blowing, of a rigid case 2,2A with solid structure, without recesses 7,7A, and its flexible pouch 3,3A - detachment of the flexible pouch (3,3A ) relative to the frame constituting the rigid case (2,2A), cutting recesses (7,7A), repositioning the flexible bag (3,3A) against the inner walls of the frame constituting the rigid case (2) , 2A). 7. Process for producing a vial (1,1A) according to one of claims 1 to 5, characterized in that the recesses (7, 7A) are obtained according to the following phases: molding by injection molding or by extrusion blow-molding of a rigid structure (2,2A) with a solid structure, without recesses (7,7A), - recess cutting (7,7A), production of a flexible pouch (3,3A), - positioning of the flexible pouch (3,3A) in the hollow rigid case (2,2A). 8. A method according to claim 6, characterized in that the detachment operation of the flexible bag (3,3A) relative to the rigid structure solid case (2,2A) is effected by a pressure difference between the pocket flexible (3,3A) and said housing (2,2A), before cutting recesses (7,7A). 9. The method of claim 6, characterized in that the detachment operation of the flexible bag (3,3A) relative to the solid structure rigid case (2,2A) is effected by vibrating said housing (2). , 2A), under an ultrasonic frequency, before cutting the recesses (7, 7A). 10. The method of claim 6, characterized in that the detachment of the flexible bag (3,3A) relative to the rigid housing (2,2A) is obtained by a mechanical action on said housing (2,2A), before cutting recesses (7.7A). 11. Method according to one of claims 6 to 10, characterized in that the recess cutout (7.7A) is performed by ultrasound. 12. Method according to one of claims 6 to 10, characterized in that the cutting of the recesses is performed by laser radiation. 13. Method according to one of claims 6 to 10, characterized in that the cutting of the recesses is performed by mechanical cutting. 14. Method according to one of claims 6 to 10, characterized in that the cutting of the recesses is effected by means of a hot cutting tool. 15. Method according to one of claims 1 to 14, characterized in that the surface of the recesses (7,7A) represents at least 18% of the total surface of the armature constituting the rigid housing (2,2A), not cut. 16. Method according to one of claims 1 to 15, characterized in that the pocket bottle with hollow housing is decorated by a heat-shrinkable sleeve or a label