PACKAGING

Abstract: The invention relates to a packaging, comprising a rolled up product (2) and a wrapping (10) applied around said rolled up product, having a carrying strap (12) passed axially over the wrapping round said rolled up product. Preferably tied transversely round the rolled up product underneath the wrapping is a locking strap (8) securing against undwinding of said rolled up product. Said wrapping consists of shrink-­ wrapping.

Description: The current invention relates to a packaging, com­ prising a rolled up product and a wrapping arranged around the rolled up product. Such a product is known. In the case the product consists of mineral wool, a wrapping is employed in order to prevent the escape of dust from the packaging and the absorption of moisture, for example rainwater, into the packaging. Since in the course of storage and transport the packaging has to be gripped by this wrap­ ping, this latter has to consist of durable material that is not particularly vulnerable. In other words, the wrapping forms a considerable part of the total costs of the packaging. In other known packagings a bag is used instead of a wrapping, and the packaging can be handled by gripping on the closure wad. This wad is located on an end face and such a packaging therefore has the disadvantage that the packagings cannot be stacked on one another on their end faces. The invention has for its object to improve the known packaging in the sense that the costs of the packaging are decreased considerably because a cheap wrapping can be used. This is achieved as according to the invention by a carrying strap passed axially over the wrapping around the rolled up product. When gripped the axially tied carrying strap will form slight impression in the end peripheral edges, so that release of the rolled up product from the carrying strap will be practically impossible during carrying of the packaging. In comparison to a transversely tied carrying strap the ad­ vantage is achieved that the packaging cannot tilt relative to the carrying strap because the centre of gravity of the packaging lies in or very close to the plane passing through the axial carrying strap. In the case of a transversely tied carrying strap, the fitting thereof relative to the centre of gravity of the product has to take place very carefully, since after fitting displacement of the transverse carrying strap along the wrap­ ping is virtually impossible. Preferably tied underneath the wrapping and trans­ versely round the rolled up product is a locking strap secur­ ing against unrolling of the rolled up product. Because the locking strap neutralises an unwinding tension, use can be made of an even cheaper wrapping. The fitting of the locking strap underneath the wrapping has two further advantages. Firstly, damage to a pre-applied wrapping by the fitting of the locking strap is avoided and secondly an unwinding tension is neutralised right from the start of the packing process, with the result that the entire packing process can be per­ formed more easily and more simply. In a preferred embodiment the product consists of a length of mineral wool. The packaging according to the invention is par­ ticularly suitable in the case the length of mineral wool is also provided with a covering layer of metal gauze which may have a considerable unwinding tension. In the most advantageous embodiment of the packaging according to the invention, the wrapping consists of shrink-­ wrapping which is very easy to apply and has a low cost price while nevertheless effectively preventing moisture absorption and escape of dust. The packaging according to the invention will be elucidated hereinafter on the basis of an embodiment, whereby reference is made to the annexed drawing. In the drawing: Fig. 1 shows in perspective the various packing steps for a packaging according to the invention; and Fig. 2 and 3 show the two possible ways of carrying the packaging according to the invention shown in fig. 1. Fig. 1 shows the various steps according to the invention in the process of packaging a product 1. In fig. 1A a length 2 of mineral wool is rolled up, this length being provided on one longitudinal surface 3 with metal gauze 5 stitched to it with a stitching thread 4. The used covering layer of metal gauze 5 which serves to form the mineral wool round objects to be thermally insulated, exerts a considerable unwinding tension in the rolled up product 6. This unwinding tension is neutralized by passing a locking strap 8 transversely round the rolled up product 6, that is, transversely of the roll-up axis. While only one locking strap 8 is shown, it will be apparent that more than one locking strap may be used, although in many applications one strap is sufficient to neutralise the unwind­ ing tension. There are very many different ways of fitting lock­ ing strap 8 round product 6, but the free ends of the locking strap are preferably welded to each other, for example by using heat (fig. 1B). In the third process step (fig. 1C) a wrapping 10 is applied round the pre-product 9 shown in fig. 1B, in this case a shrink-wrapping, overlapping longitudinal edges of which are welded at the point of a weld seam 11. Since the wrapping is vulnerable and is substantial­ ly intended only to counter moisture absorption and escape of dust, a following packaging step is proposed according to the invention, whereby as in fig. 1D a carrying strap 12 is passed axially round the product shown in fig. 1C. The term axial in this case means that carrying strap 12 is located in or parallel to an axial plane passing through the roll-up axis 7. Fig. 2 and 3 show both the methods, made possible for the first time by the invention, of gripping the packaging without the wrapping being damaged. As according to fig. 2 carrying strap 12 is gripped on an end face 13. The interval between this end face 13 and the carrying strap 12 that is passed loosely round wrapping 10 will become greater because carrying strap 12 causes im­ pressions 14 at the location of the peripheral edges 15 of the end wall. The impressions 14 formed secure the rolled up product against release from carrying strap 12. Fig. 3 shows the other method of carrying packaging 1 whereby in this case the carrying strap is gripped on the cylindrical face 16. The same effects hereby occur as in fig. 2.

Claims: 1. Packaging, comprising a rolled up product and a wrapping applied around said rolled up product, characterized by a carrying strap passed axially over the wrapping round said rolled up product. 2. Packaging as claimed in claim 1, characterized in that tied transversely round the rolled up product under­ neath the wrapping is a locking strap securing against unwind­ ing of said rolled up product. 3. Packaging as claimed in claim 1 or 2, charac­ terized in that the product consists of a length of mineral wool. 4. Packaging as claimed in claim 3, characterized in that the product is provided on at least one longitudinal surface with a covering layer. 5. Packaging as claimed in claim 4, characterized in that the covering layer consists of metal gauze. 6. Packaging as claimed in claims 1-5, characterized in that the wrapping consists of shrink-wrapping.

Inventors: VAN BEUKERING,SIMON FREDERICK MARIE
Applicants: ROCKWOOL LAPINUS B.V.
Application year: 1988
Main classification: B65D85
IPC codes: B65D85, B65D75