Palletised loads of containers
A preferred form of slip sheet ( 62 ) for use between layers (L) of containers, especially bottles ( 20 ), in a palletised load, comprises a rectangular board ( 63 ) having marginal portions ( 34 ) formed with corrugations ( 65, 66 ) extending perpendicular from their edges and merging into the general plane of the board ( 63 ), whereby, in use, a ‘throat’ (TD) is formed between the upward corrugations ( 66 ) on a lower slip sheet ( 62 ) and the downward corrugations ( 65 ) on an upper slip sheet ( 62 ) which prevents ‘walking’ of the outermost rows of bottles ( 20 ) in the intervening layer. Curved corners of the board ( 63 ) are provided with diverging corrugations ( 65 X, 66 X) to prevent ‘walking’ of bottles ( 20 ) from the corners of layers (L). A plurality of such slip sheets ( 62 ) can be stacked compactly and with great stability by virtue of the corrugations ( 65, 66 ) nesting in the corrugations of neighbouring slip sheets.
1. A slip sheet ( 62 ) for use between layers (L) of upright containers ( 20 ) in a palletised load comprising a flat substantially rectangular board ( 63 ) having marginal portions ( 64 ) formed with corrugations ( 65 , 66 ) extending perpendicularly from their edges and merging into the general plane of the board ( 63 ).
2. A slip sheet as in claim 1 , wherein the board ( 63 ) has curved corners from which radiate diverging corrugations ( 65 X, 66 X).
3. A slip sheet as in claim 1 or claim 2 wherein the corrugations ( 65 , 66 , 65 X, 66 X) are moulded into a board ( 63 ) of uniform thickness throughout with no increase in thickness along the sides.
4. A slip sheet as in claim 1 or claim 2 wherein the corrugations ( 65 , 66 , 65 X, 66 X) are moulded into a board ( 63 ) of uniform thickness throughout with a thinning towards the edges.
5. A slip sheet as in claim 1 or claim 2 , wherein the thickness of the board ( 63 ) is of the order of 1.0 to 3.0 mm and the maximum height of the upwardly projecting corrugations ( 66 , 66 X) and maximum depth of the downwardly projecting corrugations ( 65 , 65 X) is of the order of 2.0 to 4.0 mm.
6. A slip sheet as in claim 1 wherein the thickness of the board ( 63 ) is 2.5 mm, the length of the corrugations ( 65 , 66 ) is 30.0 mm, the pitch of the corrugations is 15.0 mm, the maximum height of the upwardly projecting ( 66 , 66 X) corrugations and maximum depth of the downwardly projecting corrugations ( 65 , 65 X) is 3.0 mm, and the thickness at the edges is 1.25 mm.
7. A palletised load of containers comprising upright containers ( 20 ) stacked in layers (L) on a pallet ( 21 ) or dolly with slip sheets ( 62 ) between the layers, also one below the bottom layer, the completed stack being topped-off by a further slip sheet and a rigid board ( 23 ), and strapping ( 24 ) applied vertically between the pallet ( 21 ) or dolly and the board ( 23 ), across under the platform ( 25 ) of the pallet ( 21 ) or dolly and across the top of the board ( 23 ) whilst subjected to a downward loading, characterised in that each slip sheet ( 62 ) comprises a flat substantially rectangular board ( 63 ) having corrugated marginal portions ( 64 ) in accordance with any one of the preceding claims, creating between successive slip sheets ( 62 ) a ‘throat’ (T) preventing ‘walking’ of the containers ( 20 ) from between those slip sheets or slipping upon shock loading.