PACKAGING UNIT FOR SCREWS, NAILS OR OTHER ITEMS

Abstract: The invention consists in a packaging unit for fasteners (2) comprising an elongated strip (4) of flexible material, one side of which is provided with transversal and closed storage compartments (6) each accommodating a fastener. The invention is characterized in that each storage compartment (6) on the side remote from the strip (4) is provided with a slot (8) which perforates the compartment wall and extends in the longitudinal direction of the compartment.

Description: PACKAGING UNIT FOR SCREWS, NAILS OR OTHER ITEMS The present invention relates to a packaging unit which is intended for screws, nails or similar fasteners and which is of the type set forth in the preamble of the following claim. When handling different fasteners, e.g. screws for wall-erection or wall-construction in building work, it is beneficial if the method of packaging applied allows all fasteners to be orientated in one and the same direction, thus increasing speed of fastener insertion and minimizing spillage. It is also an advantage if handling of the fasteners can be minimized to the greatest possible extent, so as to avoid the risk of allergic reaction which may occur from..physical contact with nickel-plated or chromium-plated screws. The ability to handle fasteners without physical con¬ tact therewith also prevents injury to the worker's fingers caused by pricks from screwpoints and sharp metal flashes or chips remaining on the fasteners subsequent to manufacture. At present, two main types of packages prevail: I) Cartons or boxes containing single fasteners (e.g. screws) which the worker must pick from the carton or box and manually orientate before insertion, a proce- cure associated with the aforementioned hazards, not¬ ably orientation, spillage, allergic reaction, in¬ juries to fingers and low fastener-insertion speeds. Moreover, dropped fasteners are likely to pierce through the shoes of the worker and injure his/her feet, and also to pierce and damage the tyres of any vehicle and transport equipment that may be in the vicinity. II) The other type of packaging commonly used is' designed for fastener-insertion which, in some respect, can be referred to as automatic. This type of package is usually in strip form, with the fasteners orientated in one and the same direction and in mutu¬ ally spaced relationship. This type of package can only be used together with those types of automatic screw tighteners or nailing machines for which they are specifically designed. For example, the fasteners cannot be removed individually from the package for insertion into a structure surface with the aid of a conventional screw driver. The present invention combines the two above-men- tioned requirements in one single package, allowing both non-handling removal of orientated fasteners or items and automatic feeding of the fasteners in auto¬ matic screw tighteners or nailing machines or the like. This is .achieved in accordance with the invention with a package having the characterizing features set forth in the following claim. The package has the form of a strip made of paper, plastic or any other appropriate material. The strip is provided with transverse compartments or pockets in which the fasteners are placed. The fasteners are neither glued, moulded nor by other means attached to the strip, but are held in place by the surrounding pressure of the compartment walls. The package is configured in such a way that each compartment is provided on one side of the strip with a slot which extends in the longi¬ tudinal direction of the compartment. When the strip is in a normal position, i.e. straight, the slot is closed. When bending the strip, the slot will widen at the same time as pressure from the compartment walls ceases, thus allowing a fastener to be removed or released from the package. The sloping compartment walls, diverging towards the slot, facilitate removal of the fastener even when the strip is moderately bent or not bent at all. The distinctive quality of the package of being able to open and close around the fastener with great precision and at high speed, allows not only both manual and automatic handling of fasteners but also provides an opportunity of designing improved auto¬ matic screw tighteners and packaging machines. The invention will now be described in more detail with reference to the accompanying drawings which illustrate an exemplifying embodiment of the inven¬ tion and in which Figure 1 illustrates a coiled package loaded with screws; Figure 2 illustrates part of a screw-loaded strip; and Figure 3 is a cross-sectional view of a curved package loaded with two screws. The drawing illustrates a package (strip) 1 which in the illustrated case is loaded with screws 2. The strip comprises transverse compartments comprising diagonal partitions 3 attached to a supporting strip 4 in manner such that every other compartment is a blind compartment 5 and every other compartment a packaging compartment 6. The packaging compartments are covered by lids 7 which are attached to the tops of the blind compartments and which, in the "roof" of the packaging compartments, form slots 8 which extend in the longitudinal direction of the compartment. When the strip is straight, the compartment slots are closed and the elastic or resilient partitions 3 bet¬ ween blind and packaging compartments press against the screw 2 and hold it in place. When the strip is bent, e.g. around an axis 9, the slot 8 will widen and cause the screw to fall out. The sloping walls 3 of the packaging compartments widen towards the slot 8, thus facilitating pressing of screws from the strip. It should be noted, however, that when using the inventive package to advance screws to a hand¬ held screw-tightener, it is intended that the strip and screws carried thereby shall be held in one hand while pressing screws from the package, one after the other, with the aid of the screw-tightener. The screws will therefore not come into contact with the fingers at all, which is highly advantageous and explains why work is carried out at an unbelievably high speed in comparison with packages with which screws must be picked losely therefrom.

Claims: CLAIMS 1. A packaging unit for screws (2) , nails or like fasteners, comprising two outer, elongated and mutu- ally parallel strips (4,7) and an intermediate, corrugated strip (3) with the crests of the corruga¬ tions connected to the outer strips (4,7) such as to form fastener-accommodating compartments (6), for which purpose only alternate compartments are used , c h a r a c t e r i z e d in that at least the outer strips (4,7) have a width which is substan¬ tially equal to the lengths of the fasteners (2) from one axial extremity to the other, and in that each of the walls of the fastener containing compartments (6) formed by solely * one outer strip (7) has provided therein a slot (8) which extends in the cross-direc¬ tion of the strip (7) .

Inventors: MICKOS KAJ, MICKOS, KAJ
Applicants: MICKOS KAJ, MICKOS, KAJ
Application year: 1990
Main classification: B65D73
IPC codes: B65D73, F16B15, F16B27