Kneading apparatus and method for producing semiconductor encapsulating resin composition

Patent metadata

Field	Value
Publication number	US-9694513-B2
Application number	US-201113636881-A
Country	US
Kind code	B2
Filing date	Mar 2, 2011
Priority date	Mar 30, 2010
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

The kneading apparatus 1 includes a casing 2 , a pair of elongated screws 4 a, 4 b rotatably provided in the casing 2 . The screws 4 a, 4 b are arranged parallel and horizontally with respect to one another. The casing 2 has a main body 20 and a screw container 3 provided in the casing 2 . The screw container 3 defines a kneading section 30 therein. The screw 4 a includes a screw axis 41 having an outer periphery, a first screw member 42 provided on the outer periphery of the screw axis 41 and a kneading member 43 provided on the outer periphery of the screw axis 41 . The first screw member 42 and kneading member 43 are provided in the kneading section 30 . The screw 4 a , the first screw member 42 and the kneading member 43 respectively have core portions 411, 412, 413 having a surface and outer layers 45 respectively provided on the surfaces of the core portions 411, 412, 413 . The screw container 3 and the outer layers 45 are constituted of a nonmetallic material.

First claim

What is claimed is:

1. A kneading apparatus for kneading a composition containing plural kinds of pulverized materials, said apparatus comprising:
a casing including: a supply port for supplying the composition; an elongated cylindrical kneading section for storing the composition supplied through the supply port to knead the composition and having two pairs of screw axis insertion ports respectively provided in both end portions in a longitudinal direction thereof; a discharge port for discharging the composition thus kneaded; and sealing members respectively provided in the screw axis insertion ports of the kneading section and constituted of an elastic material,
two screws for kneading the composition stored in the kneading section, the two screws rotatably provided in the casing in parallel with each other, each of the two screws including: a screw axis having a core portion having a surface and an outer layer having a thickness of 0.3 to 60 mm and provided on a part of the surface of the core portion; and a screw member provided on the core portion of the screw axis, the screw member provided in the kneading section and having a first screw member and a second screw member oppositely oriented to the first screw member, and
two pairs of shaft bearings for respectively supporting the screw axes of the two screws,
wherein the core portion of the screw axis of each of the two screws is constituted of a metallic material and the outer layer of the screw axis of each of the two screws is constituted of a nonmetallic material,
wherein the screw axes of the two screws are respectively inserted into the two pairs of screw axis insertion ports and are respectively supported by the two pairs of shaft bearings so that the screw axes of the two screws pass through the kneading section in the longitudinal direction of the kneading section,
wherein the two pairs of shaft bearings respectively support the core portions of the two pairs of screw axes,
wherein the sealing members are provided so as to seal spaces between the two pairs of screw axis insertion ports and the outer layers of the screw axes of the two screws,
wherein the kneading section has an inner surface having a thickness of 0.3 to 10 mm and constituted of a nonmetallic material,
wherein the discharge port serves as a connecting portion connected with a supply port of a degassing device for degassing the composition thus kneaded, and
wherein the discharge port is provided between the second screw members of the two screws in planar view and opened toward a lower direction perpendicular to the screw axes of the two screws to supply the composition into the degassing device provided below the discharge port.

2. The kneading apparatus as claimed in claim 1 , wherein the screw member of each of the two screws has a core portion provided on the core portion of the screw axis and an outer layer having a thickness of 0.3 to 60 mm and provided on the core portion of the screw member, the core portion of the screw member of each of the two screws is constituted of a metallic material, and the outer layer of the screw member of each of the two screws is constituted of a nonmetallic material.

3. The kneading apparatus as claimed in claim 1 , wherein a clearance is formed between the inner surface of the kneading section and an outermost portion of the screw member of each of the two screws and the clearance is in the range of 0.5 to 4 mm.

4. The kneading apparatus as claimed in claim 1 , wherein each of the two screws is detachably provided with respect to the casing.

5. The kneading apparatus as claimed in claim 1 , wherein in the case where a length of the screw axis of each of the two screws is defined as L and a diameter of the screw is defined as D, L and D satisfy a relation of L/D≦10.

6. The kneading apparatus as claimed in claim 1 , wherein the nonmetallic material is a ceramic material.

7. The kneading apparatus as claimed in claim 6 , wherein a Vickers hardness Hv of the ceramic material at 500 gf load is equal to or more than 1300.

8. The kneading apparatus as claimed in claim 6 , wherein a thermal conductivity of the ceramic material is equal to or more than 0.01 cal/(cm·sec·° C.).

9. A kneading apparatus for kneading a composition containing plural kinds of pulverized materials, said apparatus comprising:
a casing including: a supply port for supplying the composition; an elongated cylindrical kneading section for storing the composition supplied through the supply port to knead the composition and having two pairs of screw axis insertion ports respectively provided in both end portions in a longitudinal direction thereof; a discharge port for discharging the composition thus kneaded; and sealing members respectively provided in the screw axis insertion ports of the kneading section and constituted of an elastic material,
two screws for kneading the composition stored in the kneading section, the two screws rotatably provided in the casing in parallel with each other, each of the screws including: a screw axis having a core portion having a surface and an outer layer having a thickness of 0.3 to 60 mm and provided on a part of the surface of the core portion; a screw member provided on the core portion of the screw axis, the screw member provided in the kneading section and having a first screw member and a second screw member oppositely oriented to the first screw member; and a kneading member provided on the core portion of the screw axis and between the first screw member and the second screw member, the kneading member provided in the kneading section, and
two pairs of shaft bearings for respectively supporting the screw axes of the two screws,
wherein the core portion of the screw axis of each of the two screws is constituted of a metallic material and the outer layer of the screw axis of each of the two screws is constituted of a nonmetallic material,
wherein the screw axes of the two screws are respectively inserted into the two pairs of screw axis insertion ports and respectively supported by the two pairs of shaft bearings so that the screw axes of the two screws pass through the kneading section in the longitudinal direction of the kneading section,
wherein the two pairs of shaft bearings respectively support the core portions of the two pairs of screw axes,
wherein the sealing members are provided so as to seal spaces between the two pairs of screw axis insertion ports and the outer layers of the screw axes of the two screws,
wherein the kneading section has an inner surface having a thickness of 0.3 to 10 mm and constituted of a nonmetallic material,
wherein the discharge port serves as a connecting portion connected with a supply port of a degassing device for degassing the composition thus kneaded, and
wherein the discharge port is provided between the second screw members of the two screws in planar view and opened toward a lower direction perpendicular to the screw axes of the two screws to supply the composition into the degassing device provided below the discharge port.

10. The kneading apparatus as claimed in claim 9 , wherein a clearance is formed between the inner surface of the kneading section and an outermost portion of the kneading member of each of the two screws and the clearance is in the range of 0.5 to 4 mm.

11. The kneading apparatus as claimed in claim 9 , wherein the kneading member of each of the two screws has a core portion provided on the core portion of the screw axis and an outer layer having a thickness of 0.3 to 60 mm and provided on the core portion of the kneading member, the core portion of the kneading member of each of the two screws is constituted of a metallic material, and the outer

Assignees

• Ueda Shigehisa
• Noda Kazuo
• Sumitomo Bakelite Co

Inventors

• Ueda Shigehisa
• Noda Kazuo

Classifications

• B29C48/655

  having three or more threads · CPC title

• B29C48/645

  neighbouring threads and channels having identical configurations · CPC title

• B29C48/57

  provided with kneading disc-like elements, e.g. with oval-shaped elements · CPC title

• B29B7/488

  Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices (discharging B29B7/582; feeding B29B7/60) · CPC title

• B29B7/482 Primary

  provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs · CPC title