Title:
【発明の名称】易裂性積層フィルムおよびその製造方法
Document Type and Number:
Japanese Patent JP2650849
Kind Code:
B2
Abstract:
Disclosed is an easily tearable laminated film (1) suitable as a sealed pouch or a lid of a sealed container, which can be easily and reliably torn along a direction of any specific shape such as a linear shape, an annular shape, or a V shape in opening the pouch or the lid. This easily tearable laminated film (1) includes a porous organic resin film (2), a heat-fusible resin film (3), and an adhesive layer (4) interposed between these films (2, 3). The porous organic resin film (2) consists of a rigid organic resin film (5) whose entire surface has a large number of fine through and/or non-through pores (6), and has a higher tearability than that of an organic resin film (5) having no pores. The porous organic resin film (2) and the heat-fusible resin film (3) are bonded with a higher strength than the tear strength of the porous organic resin film (2) in a tear region (7) and with a strength not higher than the tear strength of the porous organic resin film (2) in an adjoining region (8a, 8b) adjacent to the tear region (7).
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Inventors:
KAGAWA SEIJI
Application Number:
JP7782494A
Publication Date:
September 10, 1997
Filing Date:
March 25, 1994
Export Citation:
Assignee:
KAGAWA SEIJI
International Classes:
B32B5/18; B32B7/02; B32B7/04; B32B27/00; B65D65/26; B65D65/40; B65D33/00; (IPC1-7): B32B5/18; B32B7/02; B32B27/00; B65D33/00; B65D65/26
Domestic Patent References:
| JP5309780A | ||||
| JP60137U |
Attorney, Agent or Firm:
Takehiko Suzue