Snap fastener and packaging bag with the same

Details Snap fastener and packaging bag with the same Snap fastener and packaging bag with the same

1993-04-16

1995-05-16

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

428200, 428349, 4284761, 428516, 383 63, 383 65, 383 93, 493214, 24580, B65D 3325

Patent

active

054159040

ABSTRACT:
A snap fastener (11) having a base section (14), (17) to be welded to a bag body (22) is made of a linear chain low-density polyethylene (L-LDPE) or a compound resin of the linear chain low-density polyethylene and a low-density polyethylene (LDPE) as a sub-ingredient. A packaging bag is fabricated with the snap fastener from the bag body (22) and the pair of snap fastener half-members. When the snap fastener (11) is made of a compound resin of L-LDPE and LDPE, the composition ratio between them is set at 95-60 wt %:5-40 wt %. The melt index (MI) of the compound resin is set at a range of 1-15 g/10 minutes. The packaging bag body (22) is adapted to have an inner side layer made of L-LDPE. An outer side layer adhered to the inner side layer may be made of nylon so as to form the multilayered bag body.

REFERENCES:
patent: 4421805 (1983-12-01), Prader
patent: 4687688 (1987-08-01), Curie et al.
patent: 4691372 (1987-09-01), Van Erden
patent: 4756629 (1988-07-01), Tilman et al.
patent: 4859513 (1989-08-01), Gibbons et al.
patent: 4997710 (1991-03-01), Pockat et al.

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