NL6904549A - Plastic sack with air vents - Google Patents

Plastic sack with air vents

Info

Publication number
NL6904549A
NL6904549A NL6904549A NL6904549A NL6904549A NL 6904549 A NL6904549 A NL 6904549A NL 6904549 A NL6904549 A NL 6904549A NL 6904549 A NL6904549 A NL 6904549A NL 6904549 A NL6904549 A NL 6904549A
Authority
NL
Netherlands
Prior art keywords
air vents
openings
plastic sack
valve
bottom valve
Prior art date
Application number
NL6904549A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to NL6904549A priority Critical patent/NL6904549A/en
Publication of NL6904549A publication Critical patent/NL6904549A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/01—Ventilation or drainage of bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/06—Severing by using heat

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Bag Frames (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Packages (AREA)

Abstract

Valved plastic sack has air vents produced by perforating part of the plastic film by heating needles up to the plasticising temp. or higher whilst forming a projecting edge around the openings. Specif. the openings are made in the bottom valve section above the valve, and pref. the openings in the valve flap are offset from those in the bottom valve flap.
NL6904549A 1969-03-25 1969-03-25 Plastic sack with air vents NL6904549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL6904549A NL6904549A (en) 1969-03-25 1969-03-25 Plastic sack with air vents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6904549A NL6904549A (en) 1969-03-25 1969-03-25 Plastic sack with air vents

Publications (1)

Publication Number Publication Date
NL6904549A true NL6904549A (en) 1970-09-29

Family

ID=19806515

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6904549A NL6904549A (en) 1969-03-25 1969-03-25 Plastic sack with air vents

Country Status (1)

Country Link
NL (1) NL6904549A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002155A1 (en) * 1977-11-17 1979-05-30 SOCIETE ANONYME DES IMPRIMERIE ET PAPETERIE DE L'EST Société dite: Venting valve for filling sacks with fluidised pulverulent products
EP0602380A1 (en) * 1992-12-15 1994-06-22 Mmm Münchener Medizin Mechanik Gmbh Container for sterilizing or desinfecting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0002155A1 (en) * 1977-11-17 1979-05-30 SOCIETE ANONYME DES IMPRIMERIE ET PAPETERIE DE L'EST Société dite: Venting valve for filling sacks with fluidised pulverulent products
EP0602380A1 (en) * 1992-12-15 1994-06-22 Mmm Münchener Medizin Mechanik Gmbh Container for sterilizing or desinfecting

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