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US 10,118,523 B2Granted
Seat-back frame, method for preparing the same, and seat-back for vehicle
AssigneeLG Hausys, Ltd.
InventorsKang-Hyun Song, Yong-Kil Kil, Tae-Hwa Lee, Kyung-Hoon Lee, Hee-June Kim
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Abstract
A seatback frame includes: a body frame comprising a long fiber reinforced thermoplastic (LFT) composite material; and an inner frame comprising a continuous fiber reinforced thermoplastic (CFT) composite material buried in the body frame by insert injection-molding. A method for manufacturing the same, and a seatback for vehicles including the same are also disclosed.
Claims8
A seatback frame comprising:
- a body frame comprising a long fiber-reinforced thermoplastic (LFT) resin composite material, the long fiber-reinforced thermoplastic resin composite material comprising a thermoplastic resin and a reinforcing long fiber;
- and
- an inner frame comprising a continuous fiber-reinforced thermoplastic (CFT) resin composite material buried in the body frame by insert injection-molding, the continuous fiber-reinforced thermoplastic resin composite material comprising a thermoplastic resin and a reinforcing continuous fiber,
- wherein
- the inner frame is formed in advance by press-molding to implement a predetermined shape,
- the long fiber-reinforced thermoplastic resin composite material contains 30% by weight to 40% by weight of the reinforcing long fibers having a length from 50 mm to 100 mm,
- the continuous fiber-reinforced thermoplastic resin composite material contains 60% by weight to 70% by weight of the reinforcing continuous fibers having a length of 10 cm or more,
- the continuous fiber-reinforced thermoplastic resin composite material has a tensile strength of 300 MPa to 600 MPa according to ASTM D638 standard specification, and a bending strength of 350 MPa to 500 MPa according to ASTM D790 standard specification,
- the long fiber-reinforced thermoplastic resin composite material has a tensile strength of 100 MPa to 120 MPa according to ASTM D638 standard specification, and a bending strength of 100 MPa to 200 MPa according to ASTM D790 standard specification.
6 more elements
A method for manufacturing a seatback frame, the method comprising:
- preparing an inner frame having a predetermined shape by forming a continuous fiber-reinforced thermoplastic (CFT) resin composite material in advance by press-molding, the long fiber-reinforced thermoplastic resin composite material comprising a thermoplastic resin and a reinforcing long fiber;
- and
- inserting and injection-molding the inner frame into a long fiber-reinforced thermoplastic (LFT) resin composite material to manufacture a body frame having the inner frame buried therein, the continuous fiber-reinforced thermoplastic resin composite material comprising a thermoplastic resin and a reinforcing continuous fiber,
- wherein
- the long fiber-reinforced thermoplastic resin composite material contains 30% by weight to 40% by weight of the reinforcing long fibers having a length from 50 mm to 100 mm,
- the long fiber-reinforced thermoplastic resin composite material has a tensile strength of 100 MPa to 120 MPa according to ASTM D638 standard specification, and a bending strength of 100 MPa to 200 MPa according to ASTM D790 standard specification,
- the continuous fiber-reinforced thermoplastic resin composite material contains 60% by weight to 70% by weight of the reinforcing continuous fibers having a length of 10 cm or more, and
- the continuous fiber-reinforced thermoplastic resin composite material has a tensile strength of 300 MPa to 600 MPa according to ASTM D638 standard specification, and a bending strength of 350 MPa to 500 MPa according to ASTM D790 standard specification.
5 more elements
Dependencies are inferred from the claim text.