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4403636 |
Laundry bag
A one-piece laundry bag of elongated, flat shape wherein the side edges are each provided with zippers so that when the zippers are not engaged, the bag will substantially lay out flat.
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4402403 |
Gusseted pouch, especially for receiving cut tobacco
A gusseted pouch for cut tobacco is made from outer sheet blanks sandwiching an intermediate paper layer, folded to form a pocket with side walls. This causes an excess accumulation of material at...
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4397391 |
Feed unit for a detergent and packaging thereof
The invention relates to an imposed means of ensuring that the sealing edge(s) of a flat, for instance rectangular, detergent-containing sachets is (are) kept closed. The sealing edge is of the...
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4389436 |
Flexible film laminate and retortable food pouch therefrom
A flexible film laminate and retortable pouch therefrom comprising a first layer of heat-sealable polyolefin film; a syndiotactic poly-1,2-butadiene adhesive be bonding said first layer to a second...
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4373979 |
Sealed bags of plastic materials
A method of sealing a sheet of woven ribbons of heat sealable plastics material to an article which may be another sheet of said plastics material comprises applying a regular pattern of ultrasonic...
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4363841 |
Laminated packaging material
A laminated packaging material suitable for use in flexible containers for potato chips, corn chips, and the like, comprises (A) as an outer surface, a transparent sheet of nylon, polyester,...
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4356853 |
Bag
A bag for free flowing powders or granules has a cylindrical body portion of a bag proper, top and bottom end portion which close top and bottom openings of the bag proper, and a cylindrical...
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4325507 |
Package carton and procedure for its manufacture
The invention relates to a package for books and like flat articles, comprising an inner, double folded carton envelope and an outer protective cover of paper or like thin material closing the...
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4276330 |
Trilaminate film for forming sideweld bags
Sideweld bags having strong sidewelds can be made from a trilaminate film comprising a core layer of an ethylene-propylene block copolymer sandwiched between skin layers of polypropylene or an...
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4268578 |
Coated polyolefin films having a low adherence to the welding bars of welding machines
There are disclosed polyolefinic films carrying two coatings, the first coating consisting of amino compounds and the second of a mixture of vinyl or vinylidene polymers or copolymers, epoxy resins...
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4189089 |
Bag having sides seamed by complementary bands of cohesive material
An empty square bottom bag is provided which consists of a front wall, a back wall and a bottom wall formed from a unitary panel and including a band of adhesive on the outer face of said panel...
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4169910 |
Multilayer film including polyolefin layers and a polybutylene layer useful for the production of bags
A multilayer film suitable for use in fabricating a trash bag, includes a first outer layer comprising a first heat sealable polyolefin, a second outer layer comprising a second heat sealable...
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4156493 |
Recloseable dispenser packet
A recloseable dispenser packet is disclosed wherein articles, such as moisture impregnated towelettes, are readily accessible to the user. Both semi-rigid and flexible embodiments of the invention...
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4135957 |
Method for sealing plastic sheets
A method and apparatus are disclosed for sealing flexible plastic sheets together. The method is performed by use of a die wherein a pair of longitudinal grooves are provided at the edge of the...
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4127155 |
Waterproof bag with waterproof divider
A carrying bag is provided with an opening and includes two side panels. The side panels are laminated on their inner surfaces with a waterproof material and are separated by one or more...
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4097236 |
Method of detecting heat seal breaks and package thereof
Breaks in heat seals between a paper member and a clear plastic member are detected by providing a paper member with a relatively dark coloration, for example dark blue, dark green or dark red, at...
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4087002 |
Shipping bag
An improved cushioned shipping bag is disclosed, together with a unique method of continuously making the bags. The improved bag protects objects from being damaged when they are transported,...
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4076063 |
Flexible, collapsible container for liquids with improved tail seal
A thin-walled tubular container and a mold for making it is disclosed. The container defines a head portion with access means to the contents of the container, and a tail portion defining a sealed...
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4041851 |
Method for making plastic bags
The invention provides a novel method of making a plastics bag and a novel plastics bag, the method comprising folding a sheet of plastics material to form a U-shaped blank, welding the...
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4026460 |
Valve type shipping bag
A force flow valve type shipping bag including a vapor barrier ply, incorporating a valve-like sealable vent communicating between the exterior of the bag and the space between the vapor barrier...
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4011798 |
Method of making shipping bag
An improved cushioned shipping bag is disclosed, together with a unique method of continuously making the bags. The improved bag protects objects from being damaged when they are transported,...
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4010783 |
Flexible, collapsible container for liquids having reinforced tail portion
A flexible-walled, tubular, collapsible container for liquids is disclosed of the type having a head portion with access means, and a tail portion with a sealed line joining sides of the container...
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3990628 |
Plastic bag with zig zag plies
A plastic bag with zig zag plies provided with a tubular valve foil sealed on the one hand to an outwardly folded tubular foil part originally situated between two incisions along zig zag ply edges...
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3988499 |
Storage bag and method for using same
A storage bag made of a composite film material of two or more plys of plastic film for use in vacuum packaging fresh perishables, such as fresh cuts of meat. The film composite has a matted finish...
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3982992 |
Production of heat seals in thermoplastic material with press head having a temperature gradient
Heat seals of improved delamination resistance are provided having increasing adhesion across the width of the seal band. The seals are produced by using a heat seal means having a temperature...
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3980225 |
Self-standing bag
A self-standing bag is made of two similar side wall sheets disposed in an opposng relation and a bottom wall sheet having two edges thereof heat-fused with the lower edges of the two side wall...
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3974960 |
Plastic trash bag tie bands
A plastic trash bag having peelably attached thereto a full length tie strip formed of another plastic material. The strip extends along an entire face of the bag in parallelism with the machine...
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3970242 |
Hosiery envelope
Disclosed herein is a stocking envelope having an improved sealing arrangement provided by a pair of stripes of "bimodal adhesive" laid down wet during initial envelope formation to join the glue...
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3960636 |
Method and apparatus for the production of shear seals in thermoplastic materials
A method and apparatus for the production of improved heat seals in thermoplastic materials which includes causing displacement of thermoplastic material in the area being sealed during the sealing...
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3956045 |
Method and apparatus for bonding layers of resinous material
A method and apparatus for bonding at least two films of resinous material such as polyester films to one another wherein at least a portion of one surface of one polyester film is placed...
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3949901 |
Shipping bag
A shipping bag for powder or granular material which is comprised of a square external bag of flexible sheet having an inlet at its top end and an outlet at its bottom end and a cylindrical...
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3939972 |
Pouch made of coextruded polymers
A pouch is formed from a section of coextruded polymer tubing, which is pressed flat, folded over along a longitudial axis, and heat sealed along the sides, whereby the opposed walls of the pouch...
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3889870 |
Welded polyester bags
This invention relates to a welded bag of stretched polyester film, comprising a biaxially stretched tubular film with a bottom weld.
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3868056 |
PROTECTIVE CONTAINERS AND METHODS OF MAKING THE SAME
A cover sheet of paper or the like is laminated with a liner blanket of plastic material embodying closely spaced and hermetically sealed air cells. The composite sheet or mat is doubled upon...
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3860475 |
METHOD FOR BONDING ORIENTED POLYESTER FILMS
A method is provided for bonding biaxially oriented films of polymeric linear terephthalate esters by applying to at least one of the surfaces to be bonded an agent having at least an incipient...
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3851814 |
GUSSETED ARTICLE
A gusset pouch and a method of making the pouch is disclosed. The pouch consists of two webs of material that have coterminous marginal edges with the first web having a width greater than the...
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3833166 |
VALVE BAG
A valved plastics bag which has its valve adjacent and parallel to the top of the bag and is constructed of overlapping multi-ply panels in the front wall of the bag, the valve being formed between...
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3827472 |
RECLOSABLE BAG
A flexible bag structure having an outer layer and an inner layer with the layers bonded to each other and being coextensive to the top of the bag, and the inner layer formed of a plastic with...
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3822037 |
COMPACTOR BAG AND METHOD OF MANUFACTURE
A compactor bag includes opposed paper sheets which are joined at the edges and at one end in the manner of a "flat" bag. A liquid impervious casing extends over the joined ends of the sheets and...
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3779420 |
FLUID CONTAINER
A flexible fuel container having an outwardly projecting pinch seam around the peripheral outermost edges thereof. The seam is capable of extending or expanding in a direction normal to the...
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3775239 |
PACKAGING MATERIAL, PACKAGES AND METHOD OF MAKING SAME
This invention relates to a novel heat sealable packaging sheet material which is resistant to the transmission of oils and greases and to the strong durable packages made from such material.
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3768724 |
CUSHIONED SHIPPING BAG
A shipping bag has two outer bag walls and at least two layers of a cushioning material which provide means for sealing the outer bag walls together at the peripheral edges thereof. A method for...
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3733024 |
CONTAINER
A paper container of the bag type is provided wherein the wall structure incorporates an elastic, longitudinally oriented strip overlying a weakened section of the wall. The elastic strip is bonded...
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3721603 |
CYLINDRICAL BODIES FROM POLYETHYLENE OR POLYPROPYLENE
Cylindrical bodies from polyethylene or polypropylene fabrics are prepared with tensile strength at least 22 kg/50 mm, in the bonded and unbonded portions.
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3719318 |
THERMOPLASTIC BAG
A thermoplastic bag is formed from a sheet of thermoplastic material which is folded and tucked to form a bottom gusset. The bottom gusset portion is sealed at opposite corners with an inverted...
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3695507 |
SURVIVAL BAG
Protective clothing in the form of a survival bag is fabricated from a plastics film having a metallic coating applied to the surface.
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3661693 |
REINFORCED SEAM FOR SHEET MATERIAL
A seam for joining together the marginal edges of two sheets of flexible material, such as plastic or fabric, in which the edges are wrapped around a cable or other reinforcing member and clamped...
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3661322 |
PACKAGE SEAL
The invention discloses a packaging development providing enhanced resistance to splitting or opening of a seam or seal in a multi-ply wall flexible film package. A chub package having a...
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3645822 |
METHOD FOR PROVIDING MULTILAYER FILMS HAVING IMPROVED SLIP PROPERTIES
Slip properties of multilayer films of thermoplastic organic polymers are improved by incorporating small amounts of a conventional slip additive, e.g., oleamide, into one or more of the inner...
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3640790 |
SEALING PLASTIC FILM
A method of heat sealing layers of plastic film wherein the film layers are heated in contact until the plastic attains a flowable state, and the area of flowable plastic is then extended until the...
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