Veneer bonding apparatus, veneer bonding method, bonded veneers, and veneer transporting method

An unseasoned veneer bonding apparatus for bonding veneers to each other, wherein each of said veneers has two opposed sides called backside and face side, respectively, and said veneers tend to bend toward the same side, comprising:

• a bonding face machining device for machining both end portions of an unseasoned veneer to be bonded to bonding faces;
• a drying device for drying said machined bonding faces;
• a bonding agent applying device for applying thermosetting bonding agent to at least one bonding face of said dried bonding faces;
• an adjusting device for adjusting a front end bonding face, with the thermosetting bonding agent applied thereto, of a succeeding unseasoned veneer to a rear end bonding face, with the thermosetting bonding agent applied thereto, of a preceding unseasoned veneer such that the face side of said preceding unseasoned veneer and the backside of said succeeding unseasoned veneer are flush with each other;
• and
• a pressurizing device for heating and pressurizing said adjusted bonding faces to each other.

A veneer bonding apparatus for bonding veneers to each other, wherein each of said veneers has two opposed sides called backside and face side, respectively, and said veneers tend to bend toward the same side, comprising:

• a veneer feeding device for feeding a veneer to be bonded to a following process while nipping said veneer;
• a bonding face machining device for machining both end portions of said veneer to bonding faces after said veneer feeding device nips the veneer;
• a veneer transporting device for independently nipping the veneer of which both ends are machined to the bonding faces while the veneer is nipped by the veneer feeding device, and after the nipping of the veneer by the veneer feeding device is released, said veneer transporting device transporting the veneer while nipping the veneer;
• a bonding agent applying device for applying bonding agent to at least one bonding face of said machined bonding faces;
• an adjusting device for adjusting a front end bonding face, with the bonding agent applied thereto, of a succeeding veneer to a rear end bonding face, with the bonding agent applied thereto, of a preceding veneer such that the face side of said preceding veneer and the backside of said succeeding veneer are flush with each other;
• a pressurizing device for pressurizing said adjusted bonding faces to each other;
• and
• a bonded veneers transporting device for nipping a train of said bonded veneers, and for transporting said rear end bonding faces of the train of the bonded veneers to a bonding position of the pressurizing device to prepare for bonding to said front bonding faces of said succeeding veneers after said pressurizing device releases the nipping of said train of the bonded veneers.

A veneer bonding apparatus for bonding unseasoned veneers to each other, wherein each of said veneers has two opposed sides called backside and face side, respectively, and said veneers tend to bend toward the same side, comprising:

• a veneer feeding device for feeding an unseasoned veneer to be bonded to a drying device in a following process while nipping said veneer;
• a bonding face machining device for machining both end portions of said unseasoned veneer to bonding faces after said veneer feeding device nips the unseasoned veneer;
• a drying device for independently nipping said unseasoned veneer and drying said machined bonding faces while said unseasoned veneer of which both ends are machined to bonding faces is nipped by said veneer feeding device;
• a veneer transporting device for independently nipping said unseasoned veneer while the veneer is nipped at least by the drying device, and after the nipping of the unseasoned veneer by the veneer feeding device and by the drying device are released, said veneer transporting device transporting the unseasoned veneer while nipping the unseasoned veneer;
• a bonding agent applying device for applying thermosetting bonding agent to at least one bonding face of said dried bonding faces;
• an adjusting device for adjusting a front end bonding face, with the thermosetting bonding agent applied thereto, of a succeeding veneer to a rear end bonding face, with the thermosetting bonding agent applied thereto, of a preceding veneer such that the face side of said preceding veneer and the backside of said succeeding veneer are flush with each other;
• a pressurizing device for pressurizing said adjusted bonding faces to each other;
• and
• a bonded veneers transporting device for nipping a train of said bonded unseasoned veneers, and for transporting said rear end bonding faces of the train of the bonded unseasoned veneers to a bonding position of the pressurizing device to prepare for bonding to said front bonding faces of said succeeding unseasoned veneers after said pressurizing device releases the nipping of said train of the bonded unseasoned veneers.

A method of bonding veneers, wherein each of said veneers has two opposed sides called backside and face side, respectively, and said veneers tend to bend toward the same side, comprising the steps of:

• machining both end portions of each of said veneers to bonding faces;
• applying bonding agent to at least one bonding face of said bonding faces;
• adjusting said bonding faces such that the face side of a veneer to be bonded and the backside of the other veneer to be bonded are flush with each other;
• and
• pressurizing said adjusted bonding faces to each other to bond said veneers to each other.

A method of bonding veneers, wherein each of said veneers has two opposed sides called backside and face side, respectively, and said veneers lend to bend toward the same side, comprising the steps of:

• machining both end portions of each of said unseasoned veneers to bonding faces;
• drying said bonding faces and applying thermosetting bonding agent to at least one bonding face of said dried bonding faces;
• adjusting said bonding faces of the unseasoned veneer such that the face side of an unseasoned veneer to be bonded and the backside of the other unseasoned veneer to be bonded are flush with each other;
• and
• heating and pressurizing said adjusted bonding faces to each other to bond said unseasoned veneers to each other.