(19)
(11) EP 0 695 692 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.06.1996 Bulletin 1996/25

(43) Date of publication A2:
07.02.1996 Bulletin 1996/06

(21) Application number: 95108083.7

(22) Date of filing: 26.05.1995
(51) International Patent Classification (IPC)6: B65D 3/22, B65D 25/56, B31F 1/00, B31F 1/07, B31F 5/04, B31B 1/26, B31B 1/16
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 02.08.1994 JP 181149/94
20.02.1995 JP 30827/95

(71) Applicant: Toppan Printing Co., Ltd.
Taito-ku Tokyo (JP)

(72) Inventors:
  • Kobayashi, Noriko
    Takatsu-ku, Kawasaki-shi (JP)
  • Igarashi, Makoto
    Sakae-ku, Yokohama-shi (JP)
  • Hirano, Tadayo
    Miura-gun, Kanagawa-ken (JP)
  • Furuki, Sakae
    Sagamihara-shi, Kanagawa-ken (JP)
  • Sada, Jun
    Urawa-shi, Saitama-ken (JP)
  • Take, Yoshiaki
    Tama-shi, Tokyo (JP)
  • Akima, Yoshihiro
    Hachioji-shi, Tokyo (JP)
  • Shiki, Hiroya
    Sagamihara-shi, Kanagawa-ken (JP)
  • Iyori, Teruaki
    Isehara-shi, Kanagawa-ken (JP)
  • Yamazaki, Nobumasa
    Nerima-ku, Tokyo (JP)

(74) Representative: Tiedtke, Harro, Dipl.-Ing. 
Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4
D-80336 München
D-80336 München (DE)

   


(54) Heat insulating cup and method of manufacturing the same


(57) A heat insulating cup (10) comprises a cup body (12) and a protective cover (20). The cup body (12) has a side wall (14) and a bottom wall (16). The protective cover (20) is adhered to the cup body (12) to cover the entire outer circumferential region of the side wall (14). The upper end portion of the side wall (14) is folded outward along the open upper circumferential edge of the cup body to form a flange portion (18). The protective cover (20) comprises an embossed paper sheet (24) having a dotted pattern of embossed points and a paper liner board (28) adhered to the embossed paper sheet. The embossed paper sheet (24) has a basis weight of 50 to 180 g/m², with the liner board (28) having a basis weight of 180 to 270 g/m². A laminate structure prepared by adhering the liner board (28) to the embossed paper sheet (24) is die-cut to prepare a blank (32) of the protective cover (20). The blank (32) is adhered to the side wall (14) of the cup body (12) such that the both side end regions (33a, 33b) of the wound blank (32) are arranged opposite each other.






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