Method and device for producing laminated composite

A method for producing a laminated composite by laminating a polyolefin resin drawn sheet on at least one face of a sheet-form core material having a density of 30 to 300 kg/m3, comprising:

• coating or impregnating a face to be bonded of the core material and/or the drawn sheet with a bonding synthetic resin or rubber having a flow starting temperature lower than the thermal deformation temperature of the core material and the melting point of the drawn sheet;
• stacking the core material and the drawn sheet into a stack product so as to contact each other in the coated face or impregnated face;
• heating the resultant stack product to not less than the flow starting temperature of the synthetic resin or the rubber and not more than the thermal deformation temperature of the core material and the melting point of the drawn sheet;
• and pressing the stack product to apply a compression strain of 0.01 to 10% to the core material at the same time of or after the heating.

A method for producing a laminated composite by laminating a polyolefin resin drawn sheet on at least one face of a sheet-form core material having a density of 30 to 300 kg/m3, comprising:

• interposing, between the core material and the drawn sheet, a bonding layer having a flow starting temperature lower than the thermal deformation temperature of the core material and the melting point of the drawn sheet;
• heating the bonding layer to not less than the flow starting temperature and not more than the thermal deformation temperature of the core material and the melting point of the drawn sheet;
• stacking the three materials into a stack product;
• and
• pressing the stack product to apply a compression strain of 0.01 to 10% to the core material.