Title:
【発明の名称】プラスチックバッグ及びその製造方法及び製造装置
Document Type and Number:
Japanese Patent JPS63502418
Kind Code:
A
Abstract:
Disclosed is a bag including a front wall and a rear wall and having an open mouth portion in which the front wall and rear wall are joined by pleated portions or gussets. The bag is manufactured so that a longitudinal, thermally welded seam is placed inside a portion of at least one of the gussets at a point other than the central fold. The bag preferably includes handles which are integral extensions of the front and rear walls and the gussets. The bag manufactured according to the principles of the present invention thus eliminates or minimizes failure of thermally welded seams. Also disclosed is a method for manufacturing the bags and an apparatus for manufacturing the bags.
Inventors:
Edward
Application Number:
JP50580186A
Publication Date:
September 14, 1988
Filing Date:
November 04, 1986
Export Citation:
Assignee:
Ulbe-Lilly Mansions I B-V
Edward
Edward
International Classes:
B31B1/26; B31B23/00; B31B50/64; B65D33/06; (IPC1-7): B31B1/26; B31B1/64
Attorney, Agent or Firm:
Takehiko Suzue