Abstract: A bag (1) which includes at least two flexible but tearable walls (2, 3) placed opposite to one another, and a margin (4) for rigidly joining the two walls (2, 3) one against the other, disposed so as to delimit, on the one hand, the outer periphery (6 to 9) of the bag (1), and on the other hand, the outer contour (10 to 13) of a central volume (5) intended to contain a product which can be liquid, pasty or pulverulent, for example. There is a line (18) of weakest resistance which extends on the joining margin (4) and which is intended to allow the bag (1) to be opened by tearing the walls (2, 3). A first end (19) of the line of weakest resistance (18) is located at a peripheral edge (7) of the joining margin (4).

Abstract: An expandable microwave popcorn package which contains a charge of popcorn kernels suitable for preparation in a microwave oven. The package is formed of front and back panels preferably joined together at the top and bottom ends and at the sides by side panels. The back panel includes two or more sections which are joined along slightly overlapping edges and bonded together by a releasable adhesive, thereby forming lap seam(s). Conversion of the package into a serving vessel is made possible by the releasable nature of the adhesive which allows the lap seam(s) to be disengaged after the popping process is complete. Thus the back panel sections can be detached, and possibly removed, to expose the popcorn within the package. Ideally the heat and steam created by the popping process will diminish the bonding strength of the releasable adhesive thereby enhancing the conversion.

Abstract: A flexible paper popcorn package in the form of an easily expandable, nontrapping bag (18) is disclosed including a bottom wall (20) and a top wall (22) interconnected together adjacent their circular outer peripheries (20a, 22a) by first and second interconnection portions (26a, 26b). In one preferred form, the top wall (22) is formed by first and second wall portions (22b, 22c) interconnected together by a peelable closure seal (28). In another preferred form, the top wall (22) is formed from a first portion (22d) having an access opening closed by a closure portion (22e) interconnected by a seal (40) including the peelable closure seal portion (40a) to the first portion (22d). In still another preferred form, the bottom and top walls (20, 22) are interconnected together by their interconnection to gussetted side panels (50, 52), with the peelable closure seal being formed in the interconnection between the bottom and top walls (20, 22).

Abstract: An expandable microwave popcorn package which contains a charge of popcorn kernels for preparation in a microwave oven. The package is formed of front and back panels preferably joined together at the top and bottom ends by an adhesive and at the sides by side panels. The back panel includes a pair of separation lines along which the package material is relatively weak such that a portion of the back panel can be torn from the remainder of the package to expose the popcorn within. Separation lines may be formed by weakening a portion of the bag substrate, by reinforcing the adjacent areas, or by a combination of the two. Side panels are folded to form gussets which allow the package to remain flat during storage, to expand to accommodate the popped kernels. A susceptor is also preferably placed on the front panel opposite the back panel to enhance the popping action.

Abstract: The invention concerns a multilayer polymer film and a multichamber bag, whose bag chambers are formed by seams in the outer border zone and by at least one seam in the chamber separation zone, whereby the seams are formed from the polymer materials facing the chambers. The polymer materials facing the chambers are inseparably sealed together in the outer border zone and sealed together in the chamber separation zone such that the seam is separable with a force which lies in the range from 5 to 20 N. The different strength of the bond from the sealing process is obtained by varying sealing temperatures.

Abstract: A high temperature steam-sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs form a cavity into which high temperature sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After high temperature steam sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable vacuum cycle steam sterilization at a temperature of at least 270.degree. F.

Abstract: A system of the present invention includes a tandem package and an apparatus and method for making the same. The tandem package includes a strip of film material having a plurality of medicament containing compartments. To prevent ripping or exposure of the medicament in an adjacent compartment upon opening of an individual segment of the package, each compartment is separated by a dividing member. In addition, to facilitate opening of the each segment while providing increased resistance to opening by children, each segment includes a pinhole in at least one corner of the segment perpendicular to a fold line. Thus to open the segment to expose the medicament, the corner may be folded along the fold line and torn at the pinhole, with the dividing member limiting tearing of the film.

Abstract: Pouches of flexible packaging material exhibit a tearing zone in the form of a weakness such as perforations or a separation in the material, this in order to be able to remove the contents easily. The packaging material is covered over by at least one film-forming mass, at least in the region of weakness, in order that the package remains closed until the contents are to be used. The film-forming mass may be the decorative printing on the pouch. After packaging, the contents are protected by the pouch and, in order to remove the contents, the pouch may be opened readily by a pulling or snapping movement which causes the covering of film-forming mass to break.

Abstract: A device for the closure and sealing of envelopes and the like. First and second elongated strips of plastic material are foldable upon each other along a narrow longitudinal hinge line. The first strip has a series of locking pins distributed along its length. Each of the locking pins has a weakened base. The second strip is provided with a series of sockets adapted for receiving respective locking pins in locking relation therein. To permit the device to be opened easily when it has been applied to a plastic envelope with the locking pins penetrating orifices formed along the two borders at the mouth of the envelope, at least a part along the length of the longitudinal hinge line is weakened starting from a first end, and each strip is provided, at its first end, with an appendage capable of being held between the fingers of the user.

Abstract: An unsealing structure for packing films that are difficult to rip to pack merchandise is disclosed, where the films can be easily ripped by stripping a tag label. A tearing line 2 is formed in the surface of the film 1 of the film package by hot shearing. A cutout 3 communicates with the tearing line 2 to assist in unsealing the film package. A tag label 4 is affixed to the film 1 and covers the tearing line 2 and the cutout 3.

Abstract: A plastic film liquid pouch is formed from impermeable film sheet material and has opposed side walls with sealed circumferencial edges to form an enclosed chamber. A liquid product is provided in the chamber and a space is also provided to permit expansion of the liquid. An internal straw restraining passage is formed by seals between the opposed side walls. The straw restraining passage communicates with the liquid chamber and a straw is held loosely captive inside the passage and axially displaceable therein.

Abstract: A polymeric laminate for use in polymeric films, and packaging material and packages made therefrom, that is roughened or knurled to produce a series of nicks or cuts over substantially the entire surface area of the laminate, producing an easy-opening feature. The laminate may be a multilayer, polymeric structure that may comprise an oriented polypropylene, polyethylene terephthalate, or a biaxially oriented nylon. The packaging material of the invention may contain a sealant film, either a single layer or multilayer film, and may also comprise an intermediate layer of foil.

Abstract: A gelling material is composed of water-absorbent resin 12 wrapped in a bag composed of two laminated water-soluble sheets 1.cndot.1, the water-absorbent resin being prepared so as to enable the bag to be disintegrated by an inner pressure generated when an expanded volume of the water-absorbent resin by absorbing water through the bag exceeds a maximum volume capacity. When the gelling material is added to the aqueous fluid, the water-absorbent resin 12 is spread in the aqueous fluid at a stroke, and is diffused uniformly. Thus, the water-absorbent resin 12 is brought fully in contact with the aqueous fluid.Since this enables the aqueous fluid to be gelled in a short period of time, the aqueous fluid can be processed speedily. Even the aqueous fluids, which are difficult to be handled by the conventional gelling material, can be gelled conveniently in a short period of time, and the resulting gell can be easily handled, thereby enabling an easy disposal of the aqueous fluids, i.e., the gell.

Abstract: A tear-open bag is made of non-tearable synthetic resin and comprises a front side and back side formed from a single web of synthetic resin. The sides of the web are heat sealed together to form an end-to-end seam in the bag. The ends of the bag are heat sealed together, thereby forming a completely moisture resistant heat-sealed bag. One end closure of the bag is provided with a tear-propagating slit which can be readily manipulated by an adult to tear off a corner of the bag and thereby form a pour spout for dispensing the contents of the bag in a controlled manner. The slit is not readily or easily used by a child to open the bag, thereby rendering the bag child-resistant.

Abstract: A standing pouch having a recess formed on the upper part of a side of the body of the pouch and spaced from the upper side of the body, and a relief connecting with the inside of the pouch surrounded by an end of the upper side, the upper part of the side and the upper part of the recess and becoming a spout by removing the end portion of the relief. The standing pouch can ensure transfer of a fluid material contained therein to another container without the occurrence of overflow problem. The standing pouch permits the variation of the discharged amount to be small and less dripping occurs.

Abstract: A packaging bag for wrapping a product with an outwardly extended projection has a side sealing portion and opposite end margin sealing portions. The side margin sealing portion is formed by heat-sealing lengthwise side margins of wrapping sheet into a shape of a rectangular tube. The end margin sealing portions are formed by heat-sealing opposite end margins of the rectangular tube. A notch is provided at an edge of the first end margin sealing portion near the side margin sealing portion to make an opening in the package by tearing at least the side margin sealing portion. A tray is provided for removing the product from the packaging bag and for protecting the outwardly extended projection of the product.

Abstract: A packaging film for wrapping a cubic article by bonding an overlapped portion by heat and by folding and sealing open ends of the packaging film, a first non-bonded portion is provided as a first opener on the overlapped portion by partially leaving the overlapped portion not bonded, the first non-bonded portion has a width which is not larger than that of the overlapped portion, the first non-bonded portion is an upper layer of the overlapped portion, and a second non-bonded portion is provided by partially leaving the overlapped portion not bonded, the second non-bonded portion is connected continuously to the first non-bonded portion and has a narrower width than that of the first non-bonded portion, and a second opener is provided on a overlapped portion, the second opener is a lower layer of the overlapped portion and is exposed when the first opener is lifted.

Abstract: A sterilizable flexible pouch package includes a non-woven barrier web, a perforated plastic intermediate web, and an imperforate plastic upper web. Line heat seals bonding the webs from a cavity into which sterilizing steam may enter after passing through the barrier and intermediate webs. The line heat seal bonding the upper and intermediate webs is of the delamination failure type. An access opening is provided for insertion of an object to be sterilized into the cavity after which the access opening is sealed, enclosing the object in the cavity. After sterilizing, the package is opened by peeling apart the upper web from the intermediate web which causes a delamination failure of the line heat seal. Preferred materials enable steam sterilization at temperature of 270.degree. F.

Abstract: The outer surface of an article is covered with a wrapping film, and the both edges of the film are lap-welded with each other to constitute a body seal section. A first slit is formed along the body seal section, substantially parallel thereto, and is spaced a small distance apart therefrom. A second slit is formed in the body seal section substantially at right angles or an inclined angle to the edge of the body seal section. When the end of the first slit is peeled off, the film splits along the body seal section and also towards the second slit. The second slit helps the split to stretch further in the transverse direction of the article. As a result of this, the wrapping film splits in both the longitudinal and lateral directions thereof.

Abstract: A blister package is described which contains at least one blister having a well which is adapted to hold a medicinal dosage. A cover is placed over the well to seal the well on the blister. A score line is placed on the blister on the cover to allow the user to open the blister and cover to obtain the dosage from the well. There are placed on the blister a pair of gripping surfaces on either side of the score line which enable the user to grip the blister and more readily open the blister package.

Abstract: A sterilizable package having at least one flexible plastic wall, and having an access opening therein covered by a peelable two layered tear strip, including a porous membrane and a plastic interlayer, which interlayer has an opening substantially matching the access opening, where the opening in the plastic interlayer is 25% or more of the width of the interlayer. The interlayer is kept from deforming during fabrication of the pouch by tack sealing it to the flexible wall of the package, and cutting the access opening and the opening in the interlayer simultaneously after the interlayer is tack sealed to the front sheet.

Abstract: An easy open tear control package, preferably a pouch, from a film of polymeric barrier material is disclosed. Methods and films for making of such packages are also disclosed. The easy open tear control feature arises from roughening portions of the outer or inner surface of the films, prior to fabricating into the package. The roughened portion is on one face or on each face of the package and is at least a full width of a seal when the film is made into the package. The roughened portion can extend the entire width of the package and can be of any desired length.

Abstract: The outer surface of an article is covered with a wrapping film, and the both edges of the film are lap-welded with each other to constitute a body seal section. A first slit is formed along the body seal section, substantially parallel thereto, and is spaced a small distance apart therefrom. A second slit is formed in the body seal section substantially at right angles or an inclined angle to the edge of the body seal section. When the end of the first slit is peeled off, the film splits along the body seal section and also towards the second slit. The second slit helps the split to stretch further in the transverse direction of the article. As a result of this, the wrapping film splits in both the longitudinal and lateral directions thereof.

Abstract: A closure arrangement for a polymeric bag having a pair of opposing films, comprises a plurality of base strips and a breakaway strip. First and optional second base strips are generally parallel to each other, substantially co-planar with each other, and laterally spaced from each other. The outer surface of each of the first and second base strips is adapted for attachment to one of the pair of opposing films. A third base strip opposes a flange portion of the first base strip. An outer surface of the third base strip is adapted for attachment to the other of the pair of opposing films. The flange portion and the third base strip have respective interlocking closure profiles attached thereto so that the bag is reclosable. The breakaway strip is disposed generally parallel to and substantially co-planar with the first and second base strips.

Abstract: A system of the present invention includes a tandem package and an apparatus and method for making the same. The tandem package includes a strip of film material having a plurality of medicament containing compartments. To prevent ripping or exposure of the medicament in an adjacent compartment upon opening of an individual segment of the package, each compartment is separated by a dividing member. In addition, to facilitate opening of the each segment while providing increased resistance to opening by children, each segment includes a tear notch in at least one corner of the segment perpendicular to a fold line. Thus to open the segment to expose the medicament, the corner my be folded along the fold line and torn at tear notch, with the dividing member limiting tearing of the film.

Abstract: A tubular pouch is provided with a tear-open strip which begins at a U-shaped perforation formed in one of two edge strips of the pouch which are joined across a junction area by cold-sealing into tubular pouch fins. The U-shaped perforation defines a grip formed by the wrapping material inside it and includes legs extending toward and entering the junction area. However, in its remaining portion, the U-shaped perforation does not reach as far as the junction area and thereby manufacturing tolerances relating to the U-shaped perforation and the relief cold bondings as well as lateral shifts between the two edge strips cannot result in bonding of the grip. When the grip is pulled to open the wrap, the wrapping material tears from the ends of the perforation along approximately parallel lines. The grip can be advantageously folded over 180.degree. in order to be readily grasped.

Abstract: According to the present invention, a water absorbing member is provided on a portion of the outer surface of a packing bag adjacent at least one sealed peripheral or circumferential side portion of the bag. By grasping this water absorbing portion when ripping or tearing open the bag, it is ensured that, even if the hands or gloves are wet, the water on the hands or the gloves in contact with the water absorbing member will move towards the water absorbing member and be absorbed thereby. This prevents a water film from existing between the hands or the gloves and the water absorbing member, so that a sufficient coefficient of friction exists therebetween to enable the packing bag to be ripped or torn open with sufficient tearing force. The present packing bag construction is particularly well suited for holding orthopedic casting materials and the like which must remain in a sealed closure until use and which are typically handled using hands or gloves which may be wet and slippery.

Abstract: A packaged food product includes a rigid food product bar which has a width, a height and a length extending between end edges of the bar and a package provided by a hand-tearable product packaging material enclosing the bar having a notch positioned therein. The notch is a single linear slit positioned adjacent and parallel to an end edge of the enclosed bar and the notch has a length less than the width of the enclosed bar. The notch is covered on an interior surface of the packaging material by a cover material which liquefies when heated to a temperature compatible with the packaging material, which is adhesive enough to remain on the notch, but which is weak enough to break when the package is bent by leveraging the product contained in the package against the packaging material interior adjacent the covered notch.

Abstract: A bag of flexible material for packaging compressible products includes a side of the bag perpendicular to the direction in which the products are compressed having a pouch of material that extends into the bag, The pouch allows expansion of the bag upon opening and a subsequent decompression of the products to facilitate removal from the bag. A tear-away opening portion of an adjacent top side of the bag releases edges of the pouch which allows the bag to expand, The bag may be used for packaging sanitary absorbent articles such as diapers.

Abstract: An opening device for flexible packaging and a package having an opening device bonded thereto are provided, wherein the opening device concentrates tearing forces and provides increased tearing leverage, facilitating the opening of the packaging without the need for a sharp object to initiate the tear. The opening device may employ first and second wings spaced apart from one another at a narrow distance and joined at a proximal end by an integral web, which acts as a fulcrum for each of the wings as they are rotated to initiate the tear, or may employ first and second wings or levers secured to opposite sides of a sealed edge of the package, which levers operate about a common fulcrum at the innermost portions of the proximal ends of the levers to magnify and concentrate tearing forces.

Abstract: A folding pack (10) is produced from a single foil sheet (12) which is so folded round an article to be packaged and is so closed that the article is surrounded by it on all sides in an airtight manner. The closure is obtained by means of an adhesive bonding of the in each case mutually opposite edge regions of the foil sheet which laterally frame the inner region of the foil sheet. According to the invention, two mutually opposite edge regions (26, 28) each have at least one not permanently adhesive region (50, 60, 72, 74), these regions being located one above the other (24) in the state folded together to form a folding pack (10), and one of these two edge regions (50, 72) is partially separated materially along its peripheral line (54, 70, 52) from the remaining edge region (26).

Abstract: A liquid storage bag is provided. The bag has a passage extending through the liquid filled cavity. The bag is specially adapted for use with a transfer device which has a guide extending upwardly within a container, the guide merging at its lower end to a cutting blade. The passage thus facilitates positioning of the bag to a cutting position by lowering the bag into the container with the guide passing through the passage, whereupon the bag may be pulled upon the blade to cut open the bag and thereby allow the liquid to flow out within the container of the transfer device.

Abstract: A laminated film bag is made of laminated films each composed of an outermost layer formed of a polyester resin film, an innermost layer formed of a polyolefin resin film and an intermediate layer formed of an aluminum foil, the polyolefin resin film has formed thereon score lines having a depth of 1/20 to 2/3 of the thickness of the polyolefin resin film and an opening width of 0.5 to 7 mm, at intervals of 1 to 15 mm.

Abstract: A resealable sachet that is designed to contain substances of liquid or creamy consistency and which after opening and partial use of the contents, may be easily resealed and which thereby prevents the leakage of the remaining contents and which can be easily and economically manufactured. The sachet consists of two essentially parallel arranged layers made of flexible film-like material with given outer contours which are connected tightly at least at their edges and which form an enclosed volume to be filled with the substance. A part of the enclosed volume is formed as a narrow outlet channel within an opening strap leading to the edge of the sachet and is sealed by a tear-off section. At least one sealed side of the sachet adjacent to the outlet channel strap has a holding slit whose length is adjusted to the width of the outlet channel strap.

Abstract: A packaging bag made of sheet material includes a longitudinal seal situated at the longitudinal bag edge and extending parallel to the bag length. The longitudinal seal bonds together at least two layers of sheet material. The packaging bag further has two transverse seals extending parallel to the bag width and intersecting the longitudinal seal. Each transverse seal bonds together at least two layers of sheet material. A tear-open slit is provided in the longitudinal seal and passes through at least three layers of sheet material of the packaging bag.

Abstract: An opening device for flexible packaging is provided to concentrate tearing forces and provide increased tearing leverage, facilitating the opening of the packaging without the need for a sharp object to initiate the tear, the opening device having first and second wings spaced apart from one another at a narrow distance and joined at a proximal end by an integral web, which acts as a fulcrum for each of the wings as they are rotated to initiate the tear. The opening device is securely fastened to a peripheral edge of the package and a predetermined portion of the first and second wings extend outwardly away from the peripheral edge, the wings serving as gripping surfaces which are rotated apart from one another in initiating the tear in the package.

Abstract: A bag for packaging products includes a generally parallelepiped-shaped body of composite sheet material having a rectangular closure zone formed at one end. A closure line extends across the closure zone between the upper and lower sides of the closure zone and a through cutout is formed in the closure zone at the closure line to facilitate opening of the bag. Preferably, the cutout is defined by first and second edges which are generally perpendicular to one another. The first edge is substantially perpendicular to the upper edge of the closure zone and the second edge adjoins the lower end of the first edge and extends substantially parallel to the upper and lower edges of the closure zone. The upper end of the first edge also extends above the upper edge of the closure zone.

Abstract: An opening device for flexible packaging is provided to concentrate tearing forces and provide increased tearing leverage, facilitating the opening of the packaging without the need for a sharp object to initiate the tear, the opening device having first and second wings spaced apart from one another at a narrow distance and joined at a proximal end by an integral web, which acts as a fulcrum for each of the wings as they are rotated to initiate the tear. The opening device is securely fastened to a peripheral edge of the package and a predetermined portion of the first and second wings extend outwardly away from the peripheral edge, the wings serving as gripping surfaces which are rotated apart from one another in initiating the tear in the package.

Abstract: A paper bag containing flexible articles maintained in a state of compression in a direction substantially parallel to their thickness. In a particularly preferred embodiment, the bag totally encloses the stack of compressed flexible articles and exhibits a substantially rectilinear shape. The bag preferably includes an opening device in one of the side panels. The opening device contains an internal reinforcement sheet made of biodegradable and/or recyclable material. The reinforcement sheet provides additional support for the opening device that is under tension created by the compression of the flexible articles. At the lowermost end of the opening device there exists a loose flap which creates an aperture in the side panel when a manual grasping force is applied to the tear flap. The bag preferably includes a carrying device provided in an extension of the top panel of the paper bag.

Abstract: Disclosed are a pouch for containing a material therein, a laminate film for the pouch, and a method for producing the pouch. The laminate film comprises a first plastic layer and at least one second plastic layer on which said first plastic layer is laminated. The first plastic layer is partially subjected to surface roughening treatment prior to the lamination, and surface irregularities are filled with a plastic material of the second plastic layer. In a pouch having substantially rectangular shape, at least one folded portion is provided at a side edge of the pouch. The surface roughened portion is positioned at and around the folded portion and at an external surface of the pouch. In one embodiment, the folded edge is provided at one side of the pouch and a heat sealed portion is provided at the other side edge thereof. In another embodiment, folded portions are provided at both side edges of the pouch and a heat-sealed portion is provided at a rear central portion thereof.