초록 ▼

In the production of a wall covering board which is shaped and composed of a substrate of corrugated paperboard and a decorative and/or protective skin layer, a hot-press for bonding of the skin to the substrate either simultaneously with or subsequently to shaping of the substrate is combined with

In the production of a wall covering board which is shaped and composed of a substrate of corrugated paperboard and a decorative and/or protective skin layer, a hot-press for bonding of the skin to the substrate either simultaneously with or subsequently to shaping of the substrate is combined with a skin material support mechanism and a drag mechanism including a sheet-grasping device mounted on the piston rod of a piston actuator. The support mechanism supports, with friction force, a belt of a sheet material employed as the skin at its one end horizontally on one side of the press. The piston rod is horizontally extended from the opposite side of the press to traverse the press and allow the grasping device to grasp the supported end of the belt and then retreated until the grasping device returns to the opposite side of the press, so that the belt is stretched between the stationary and movable dies of the press. By applying heat and pressure to the stretched belt through the movable die, the belt, i.e. the skin, is bonded to the substrate on the stationary die without acquiring wrinkles.

대표청구항 ▼

A method of producing a shaped wall covering board which is composed of a substrate of corrugated paperboard and a skin layer intimately laid on one side of the substrate for decorative, cushioning and/or protective effects, the method comprising the steps of: (a) placing the substrate on a stationa

A method of producing a shaped wall covering board which is composed of a substrate of corrugated paperboard and a skin layer intimately laid on one side of the substrate for decorative, cushioning and/or protective effects, the method comprising the steps of: (a) placing the substrate on a stationary die of a hot-press which has also a movable die; (b) supporting a belt of a sheet material employed as the skin at one end thereof with friction force such that said one end is positioned on one side of said stationary die substantially in a plane which interposes between said stationary and movable dies in the parted state and is approximately normal to the direction of the movement of said movable die; (c) extending an arm having a sheet-grasping mechanism at one end thereof substantially in said plane from the opposite side of said stationary die to grasp said one end of said belt by said mechanism; (d) providing a layer of an adhesive material which is operative at an elevated temperature between said belt and the substrate placed on said stationary die prior to the step (c); (e) retreating said arm until said one end of said belt reaches said opposite side of said stationary die, whereby said belt is stretched above the substrate placed on said stationary die; (f) applying heat and pressUre to the stretched belt through said movable die to bond the stretched belt as the skin layer to the substrate on said stationary die; (g) severing said belt on said one side of said stationary die after the step (f); and (h) further retreating said arm with continued grasping of the skin layer bonded to the sbustrate to withdraw the product of the step (f) from said stationary die.