Packing method and packed object

Abstract

A packing method makes it possible to achieve, at a low cost, both reduction of a rise in temperature of a black-based foamed product and stacking stability. The packing method for a package includes the steps of setting, on a black-based foamed product that is stacked in one or more layers on a pallet, a cover board such that the cover board covers a main surface of an uppermost layer of the black-based foamed product, and covering, with a black-based stretch film, an outer periphery corresponding to side surfaces of the black-based foamed product.

1 . A method for packing, into one package, the method comprising the steps of:
 setting, on a black-based foamed product that is stacked in one or more layers on a pallet, a cover hoard such that the cover board covers a main surface of at least an uppermost layer of the black-based foamed product, the cover board having a larger dimension than the black-based foamed product; and   covering, with a black-based stretch film, an outer periphery corresponding to side surfaces of the cover board and an outer periphery corresponding to side surfaces of the black-based foamed product such that a gap is provided between the black-based stretch film and the black-based foamed product,   wherein the package includes the black-based foamed product which has a rectangular shape, which is made of a thermoplastic resin, and which has a lightness index L* of less than 65.   
     
     
         2 . The method according to  claim 1 , wherein:
 the step of setting includes the step of placing the cover board on the pallet; and   the black-based foamed product is stacked on the cover board placed on the pallet.   
     
     
         3 . The method according to  claim 1 , wherein the black-based stretch film has a thickness of 10 μm to 250 μm and has a solar absorptance of not less than 90% in a visible light range of 380 nm to 720 nm. 
     
     
         4 . The method according to  claim 1 , wherein the black-based stretch film contains 100 parts by weight of a polyolefin-based resin and 3 parts by weight to 15 parts by weight of carbon black. 
     
     
         5 . The method according to  claim 1 , wherein the black-based stretch film has ventilation holes. 
     
     
         6 . The method according to  claim 5 , wherein an open hole rate of the ventilation holes per unit area of the black-based stretch film is 1% to 20%. 
     
     
         7 . The method according to  claim 1 , wherein:
 the cover board is made of at least one selected from the group consisting of a wooden board, a corrugated board, a plastic corrugated board, and a synthetic resin board; and   the cover board has a thickness of not less than 1 mm.   
     
     
         8 . The method according to  claim 1 , wherein the step of setting includes the step of interposing the cover board between the layers into which the black-based foamed product has been stacked. 
     
     
         9 . The method according to  claim 1 , wherein the gap between the black-based stretch film and the black-based foamed product is not less than 5 mm. 
     
     
         10 . A package comprising:
 a black-based foamed product stacked in one or more layers on a pallet and made of a thermoplastic resin, wherein the black-based foamed product has a rectangular shape and has a lightness index L of less than 65;   a cover board which is set on the black-based foamed product such that the cover hoard covers a main surface of at least an uppermost layer of the black-based foamed product, wherein the cover board has a larger dimension than the black-based foamed product; and   a black-based stretch film covering an outer periphery corresponding to side surfaces of the cover board and an outer periphery corresponding to side surfaces of the black-based foamed product such that a gap is provided between the black-based stretch film and the black-based foamed product.