FR2629051A1 - Packaging box - has common precut and prescored cardboard base with alternative fold lines for fabrication of either lid or base - Google Patents

Abstract

The cardboard box has a base and a lid which are both formed from the same design of prescored and precut card. The flat card preform has a rectangular shape with a central base area (6), two folding sides (8,10) and two folding ends (7,9). The sides and ends (7,8,9,10) may be folded about either an inner scored line (15) or an outer scored line (16). The corners (11,12,13,14) of the ends (7,9) may be folded inwards to form flaps which are fixed to the inside of the sides (8,10) to create the lid and base of the box. Either the lid or base will be slightly larger than the other so that they can slide inside each other. ADVANTAGE - The box lid and base can both be produced from one common preform thus simplifying manufacture and reducing the amount of tooling required. (10pp Dwg.No.2/4)

Description

 The invention relates to a packaging case which will find its application for the packaging of goods.

 Although the invention was more specifically developed for cardboard manufacturers. the fact remains that it may also interest other industries which use raw materials. plastics. sheets and others.

 Cardboard is widely used in packaging. because it has certain mechanical properties which, combined with favorable economic characteristics, make it particularly competitive.

 In terms of packaging. the so-called American cardboard box has developed very widely. This is a packaging obtained from a cardboard side. which is delivered to the customer flat. then the latter proceeds to the formation of the cash register at the very point of packing. Storage and transport costs are minimal. The crate is formed by folding the flaps which are held in place by gluing or applying adhesive tape. The operation is very quickly accomplished and it is an economical product.

 The American box is well suited for standard manufacturing which requires packaging adapted to the products. In this case, the dimensions of the box are studied to best suit the products and manufacturing is launched industrially.

 On the other hand. when multiple products have to be packed in boxes, the American box becomes unsuitable if the dimensions of the product vary greatly from one item to another.

Indeed, it is imperative to size the box according to the size of the most imposing article and if the same cardboard is used to package an article of smaller size, it is necessary to use a significant padding to fill the excess space. The implementation of this stuffing is first expensive and then causes time loss.

 This is why, when it comes to packaging different items whose size is variable, many users prefer to move towards the use of packaging boxes composed of a bottom and a cover. This type of box has the property of having a variable interior volume which is modulated according to the degree of depression of the cover. The lost space is reduced correspondingly and the user can, from a reduced range of box format, cover a large range of format of articles to be packaged.

 There is however a drawback to the use of boxes made up of two parts. It is precisely for the manufacturer to have to produce two cutting tools. one for the background. the other for the lid, this for a given box format. The form costs are high and it is necessary to manage two stocks, as well as at the customer's place where it is necessary to supply the packing stations with the sides cut according to the two profiles.

 This multiplicity of forms constitutes an important handicap which slows down the development of this type of packaging.

 The main purpose of the present invention is to present a packaging case formed of a bottom and a cover, both made from the same, cardboard side blank.

Thus, cutting tooling costs are reduced by half and industrial manufacturing can be launched in double series.

With the user, only one stock must be managed and the staff can make covers or funds at will according to the needs of the moment.

The advantages of the two-part packaging case are preserved, that is to say that the internal volume is variable according to the degree of depression of the cover on the bottom, which further widens the scope of the present invention.
It should also be emphasized that the complexity required in terms of form costs in order to be able to produce a dual-use product are relatively low. In particular, standard cutting presses may be perfectly suitable.

 The time required to form a cover t / or a bottom is extremely reduced thanks to the use of modern technologies. Although traditional stapling techniques can still be used, the use of glue type glue provides an interesting solution for the final fixing of the form without the need for auxiliary tools.

 Other objects and advantages of the present invention will emerge during the description which follows which is however only given for information and which is not intended to limit it.

 According to 1 invention the packaging case, composed of a bottom and a nested cover, formed from a cut side and folded according to folding edges, is characterized in that the bottom and the cover have a line cutting in the identical side.

The invention will be better understood on reading the following description accompanied by attached drawings, among which
- Figure 1 shows a packaging case consisting of a bottom and a cover.

- Figure 2 shows schematically the cutting line as well as the folding edges necessary for the manufacture of a bottom or a cover according to a preferred embodiment of the present invention
- Figures 3a. b and c, schematize the different stages of mounting a cover or a bottom of the body from a cut cardboard side.

 - Figure 4 illustrates in sectional view the establishment of a bonding point on a tongue.

 The present invention relates to a packaging case composed of a bottom and a fitted lid. It mainly concerns the cardboard industry, although other raw materials could be perfectly used for the manufacture of the packaging case of the invention.

 In terms of packaging, the use of a box made up of a bottom and a cover allows the interior volume to be adjusted by adapting the degree of nesting of the cover on the bottom.

 The disadvantage of this packaging is that it requires a double production line focused on the lid and the bottom; Similarly, at the customer, the latter must provide stock management for each of the components.

 The present invention provides an advantageous solution to this defect.

 Figure 1 shows schematically a packaging case 1 according to the present invention This case consists of a cover 2 and a bottom 3 capable of covering the goods i pack.

The interior volume of the box can be modulated thanks to an adaptation of the degree of depression of the cover 2 on the bottom 3.

 To facilitate transport and storage, case manufacturers deliver their customers from cut-out items which must be formed at the packing sites. Thus, the bottom 3 and / or cover 2 are formed from a generally cardboard side cut and folded according to folding edges.

 FIG. 2 shows schematically precisely a blank side s which has different folding edges 5 intended for the formation of the side walls of the cover and / and of the bottom.

 According to the main characteristic of the present invention, the bottom 3 and the cover 2 have an identical cutting line in the sidewall 4, that is to say that the same cutting tool in the cardboard box is also used for the manufacture of the bottoms. or covers. This results in a reduction in form costs and moreover, only one production line is necessary.

The cutting line includes
- A central square or rectangular part 6 framed by four flaps 7, 8, 9. 10, which. once folded. will form the sides of the cover or bottom.

 - side tabs 11, 12, 13, 1 (. are arranged on the flaps to secure them.

 In addition, around the central part 6, these folding edges 15 and 16 are provided. These folding edges 15 and 16. which separate the central part 6 from the various flaps 7, B 9 and 10, are double and such that the interior folding edges 15 correspond to the format of the bottom while exterior folding edges 16 correspond to the format of cover 2.

 The interval separating the folding edges 15 and 16 corresponding to each of the formats is substantially equal to twice the thickness of the cardboard side.

 Furthermore, said lateral tabs 11, 12, 13 and 14 are for example placed on the sides of two of the opposite flaps 7 and 9. However, the opposite solution could be envisaged.

 In addition, a cutting interval 17, 18, 19 and 20 is left between the lateral tabs 11, 12, 13, 14 and the neighboring flaps 6 10. The width of the intervals 17, 18, 19 and 20 corresponds substantially to double the thickness of the cardboard side.

 The formation of a bottom or a cover is illustrated in FIGS. 3a b and c. First of all, the cardboard side 4 as illustrated in FIG. 3a must have been folded along the internal or external folding edges 15 to respectively form either a bottom 3 or a cover 2. It should be noted that in the 'example chosen, the cover fits outside the bottom 3; however the opposite solution could be perfectly adopted.

The sides 7, 8, 9 and 10 are therefore folded down as illustrated in FIG. 3b. taking care beforehand to have folded the tabs 11, 12, 13 and 14 inside the flaps 6 and 10 as indicated,
The assembly is immobilized by fixing the tabs on the neighboring flaps as shown in FIG. 3c.

Different fixing means can be envisaged such as stapling for example. still that the bonding, this last state can be better adapted because it does not require any tools.

 The simple choice of the internal or external folding edge 15 or 16 made it possible to determine the manufacture of a bottom 3 or cover 2. The correct dimension is automatically established due to the presence of the folding edges produced at the time of cut by the manufacturer.

 Preferably, the tongues are coated with glue at the time of manufacture at the cardboard manufacturer. Figure i shows schematically the tongue 11 whose surface is partially covered with glue 21 of glue type it is an adhesive which adheres by contact and whose effect is immediate.

 The outer surface of the adhesive 21 is initially covered with a waxed or silicone-coated paper 22 which prevents accidental contact. This protective paper, the surface of which is non-stick, must be removed at the last moment when assembling the bottom or the cover just before applying the flap against the lateral side of the box.

 Other implementations of the present invention within the reach of ordinary skill in the art, could also have been envisaged without going beyond the scope thereof.

Claims (9)

 1. Packaging box, which will find its application in the field of packaging of goods. composed of a background  (3) and of a fitted cover (2) formed from a sidewall (4) cut and folded according to folding edges (5 ?, characterized in that the bottom (3? And the cover (2) ? have a cutting line in the sidewall (4? identical.  2. Packaging box according to claim 1 characterized in that the cutting line comprises  - a central or square central or rectangular part (6) framed by four flaps (7, 6, 9, and 10) intended to form the sides of the body,  - side tabs (11. 12, 13, 14) arranged on two of the flaps (7 to 10) to secure them.  3. Packaging box according to claim 1, characterized in that the folding edges (15 and 16) are double around the central part (6).  4. Packaging box according to claim 3. characterized by the fact that the interval separating the double folding edges (15 and 16) corresponds substantially to twice the thickness of a sidewall (4 ?.  5. Packaging box according to claim 2, characterized in that the tongues (11, 12, 13, 14) are placed on two opposite flaps (7 and 9 ?.  6. Packaging box according to claim 5, characterized in that a cutout (17, 18, 19, and 20) whose width corresponds substantially to twice the thickness of the sidewall (4? Is made between the tongues ( 11, 12, 13, and 14> and the neighboring flaps (0 and 10 ?.  7. Packaging box according to claim 2. characterized in that the tongues (11 12, 13 and 14? are coated with glue (21) and covered with a non-stick protective paper (22)  8. Packaging box according to claim 3, characterized in that the cover 121 is formed by folding the flaps (7 e, 9, 10) along the outer edges (16) of folding.  9. Packaging box according to claim 3, characterized in that the bottom (3) is formed by folding the flaps (7, 6, 9 and 10) along the inner edges (15) of folding.