US1668542A - Paper bag - Google Patents

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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
  • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
  • B65D31/14—Valve bags, i.e. with valves for filling
  • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms

Definitions

• ADELMER M BATES AND ALBERT KRASA, OF CHICAGO, ILLINOIS, ASSIGHdRB, BY
• This invention relates to a paper ba'g and particularly to a closure for a bag.
• the purpose of the invention is to provide a closure consisting of a sewed seam WlllCl'l will prevent any material escape of pulverulent materials.
• Our seam is particularly useful when applied to the valved end ofpaper valve bags, and will be described so appl ed.
• Fig. 1 is a side elevation of the valved end of a bag, with a portion broken away.
• Fig. 2 is an enlarged portion of the closure, showing the side of the seam WhlCh the needle enters.
• Fig. 6 is a section on the line 6-6 of Fig. 5.
• Our bag consists of a paper tubular section 10 closed at the end by a sewed seam, the needle thread of which is designated by the reference 11.
• a binding tape or strip 12 is bent over the end of the bag and has the seam sewed through its edges. Extending along the seam on the side which the needle enters is a soft filter cord 13.
• the bag shown is provided at one corner with a valve 14 through which the filling tube 15 is thrust to fill the bag.
• Pulverulent material cannot escape to any appreciable extent from between the bag walls at the end thereof because of the binding strip 12.
• this strip is bent snugly over the ends of the bag walls, but it may be more loosely applied at time and allow the escape of some air at its ends. This, however, can be properly-directed and taken care of so as to form no great inconvenience.
• the needle which is necessarily larger than the sewing thread, leaves a hole substantially full sized through the walls of the bag. Unless some means is provided to prevent the escape 'of dust through these perforations around the sewing thread, there is suflicient escape, especially during the filling of a valved bag, to create some annoyance as well as loss of material.
• a thick, soft cord such as cord 13
• cord 13 is held along the bag wall on the side which the needle enters, the entrance end 16 of each needle hole is covered by this cord and, while air or other gases may escape through this cord,'it acts as a filter to catch any dust in the air and prevent the escape thereof.
• a comparatively broad tape 19 is used, and the edges of this tape extend an appreciable distance below the seam, so thatlines of adhesive 20 may be provided between the binding tape and the bag-walls below the seam.
• this adhesive is applied along a strip so narrow that the adhesive does not spread beyond the edge of the tape or into the path of the needle, because sewing through adhesive material is somewhat troublesome and preferably is avoided, and any adhesive extending beyond the edges of the binding tape may prove troublesome by adhering to other bags when the bags are stacked in bundles.
• the walls are indicated as being formed of a plurality of layers, of paper.
• the walls are indicated as being formed of a plurality of layers, of paper.
• this is preferable for many reasons, amongst which is the fact that a needle hole through such walls does not leave as clear a passage around it as it does through similar paper formed in a single, thick sheet.
• a filter cord on both sides of the seam, and it might be possible to usethe end of the bag is advantageous as it aids in preventing tearing out of the bagwalls between the tape.
• the adhesive is not needed elsewhere between the tape and bagwall, and may be a detriment. The specific location of the adhesive disclosed in Figs. 5 and 6 would be useful whether or not a filter cord was used and whether a wide binding tape is used or two strips, one on each side of the bag, are used.
• filter cord as used in the will close or substantially close the holes made by the needle after the seam is formed.
• a paper bag having an end closed by a sewed seam, means beyond the seam for preventin the escape of dust between the walls of t e bag and a filter cord along the line of the seam outside of the bag and having the thread of the seam sewed therethrough.
• a paper ha having an end closed by a sewed seam, a inding tape bent over the ends of the walls beyond the seam so as to prevent the escape of dust from between said walls, and a filter cord along the line of the seam outside the bagand having the thread of theseam sewed therethrough.
• a paper bag having an end closed by a sewed seam, means beyond the seam for preventing the escape of dust between the walls of the bag and a filter cord along the line of the seam on one side and having the thread of the seam sewed therethrough, the sewing, thread being arranged to form a filter at the ends of the needle holes on the other side of the seam.
• a valved paper bag having its valved end closed by a sewed seam, means beyond the seam to prevent the escape of dust between the walls of the bag and textile material so arranged at the outer ends of the needle holes as to act as a filter and prevent the escape of dust-from said needle holes.
• a valved paper bag closed at its valved end by a double thread sewed seam, a binding strip bent over the end of the bagv walls and having the seam sewed through its edges, and a filter cord along the side of the seam which the needle enters and having the sewing thread sewed thcrethrough.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Bag Frames (AREA)

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=21892191

Family Applications (1)

Country Status (1)

Cited By (5)

• 1925
  • 1925-06-15 US US37054A patent/US1668542A/en not_active Expired - Lifetime

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