Wave-cut overlapping trash bags

  • US 7,048,224 B2
  • Filed: 08/20/2003
  • Issued: 05/23/2006
  • Est. Priority Date: 08/20/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A process for assembling wave-cut trash bags for overlapping dispensing including the steps of:

  • providing a flattened blown-film polymeric tube;

    providing sets of closely spaced, parallel seals extending transversely across the entire width of the flattened blown-film polymeric tube at equally spaced intervals therealong;

    providing a line of perforations extending transversely across the entire width of the flattened blown-film polymeric tube between the closely spaced, parallel seals comprising each set thereof;

    providing a wave shaped line of perforations extending across the entire width of the flattened blown-film polymeric tube at a location equidistant from each of the closely spaced, parallel sets of seals;

    folding the flattened blown-film polymeric tube axially into a multi-layer, fractional width configuration;

    positioning a signal receiving target between the layers of the folded flattened blown-film polymeric tube;

    directing a signal through the transversely extending line of perforations positioned between the closely spaced, parallel seals and through the perforations comprising the wave-cut line of perforations and thereby locating each end of each trash bag comprising the flattened blown-film polymeric tube;

    applying opposed axially directing forces to the flattened blown-film polymeric tube and thereby separating the trash bags comprising the flattened blown-film polymeric tube at each of the transversely extending line of perforations positioned between the closely spaced, parallel seals;

    following the separation step, positioning the leading sealed end of the following trash bag comprising the flattened blown-film polymeric tube in an overlapping relationship with the trailing sealed end of the preceding trash bag comprising the flattened blown-film polymeric tube;

    applying opposed axially directing forces to the flattened blown-film polymeric tube and thereby separating the trash bags comprising the flattened blown-film polymeric tube along each wave shaped line of perforations formed therein;

    following the separating step positioning the leading wave-cut end of the following trash bag comprising the flattened blown-film polymeric tube in an overlapping relationship with the wave-cut trailing end of the preceding trash bag comprising the flattened blown-film polymeric tube; and

    rolling the trash bags comprising the flattened blown-film polymeric tube into a roll with the sealed end of each following trash bag in the roll overlapping the sealed end of each preceding trash bag in the roll and with the wave-cut open end of each following trash bag in the roll overlapping the wave-cut open end of the preceding trash bag in the roll.

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