Global Patent Index - EP 1066152 A1

EP 1066152 A1 2001-01-10 - METHOD AND APPARATUS FOR MAKING LENTICULAR PLASTICS

Title (en)

METHOD AND APPARATUS FOR MAKING LENTICULAR PLASTICS

Title (de)

VERFAHREN UND GERÄT ZUM HERSTELLEN EISENFÖRMIGER KUNSTSTOFFTEILE

Title (fr)

METHODE ET APPAREIL POUR FABRIQUER DES MATIERES PLASTIQUES LENTICULAIRES

Publication

EP 1066152 A1 (EN)

Application

EP 97947355 A

Priority

US 9720105 W

Abstract (en)

[origin: WO9922931A1] A method and apparatus for producing a lenticular plastic sheet (30) employs a first chill roller (40), a patterned chill roller (42) having a first lenticular pattern thereon, and a second chill roller (48). A plastic sheet (49) is extruded into a first nip (140) between the first chill roller (40) and the patterned chill roller (42) so that the plastic sheet (49) is in contact with the first lenticular pattern, thereby facilitating the formation of a complementary second lenticular pattern on the plastic sheet. A belt (44) is disposed about the first chill roller (40) and the second chill roller (48) to apply force to the plastic sheet (49) in the direction of the patterned chill roller (42), thereby maintaining the plastic sheet (49) in contact with the patterned chill roller (42) to inhibit distortion of the second lenticualr pattern as the plastic sheet cools from being in a molten state to a non-molten state.

IPC 1-7 (main, further and additional classification)

B29C 59/04; B29C 43/22; B29D 11/00; G02B 3/00

IPC 8 full level (invention and additional information)

B29C 43/22 (2006.01); B29D 11/00 (2006.01); G02B 3/00 (2006.01)

CPC (invention and additional information)

G02B 3/0031 (2013.01); B29C 43/222 (2013.01); B29D 11/00288 (2013.01); G02B 3/005 (2013.01); B29C 2043/463 (2013.01); B29L 2011/0016 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

WO 9922931 A1 19990514; AU 5245698 A 19990524; CA 2308625 A1 19990514; EP 1066152 A1 20010110; EP 1066152 A4 20040825

INPADOC legal status


2007-06-15 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1034225

2006-01-04 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050601

2005-08-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20050628

2004-08-25 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20040708

2004-08-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 29C 59/04 A

2004-08-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 29D 11/00 B

2004-08-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7B 29C 43/22 B

2004-08-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: 7G 02B 3/00 B

2001-01-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000601

2001-01-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE