MXPA98006693A - Apparatus for inflating and deflating a bag for esti - Google Patents

Abstract

The present invention relates to a reusable bag for stowage, to inflate and deflate in order to cushion packaged products during shipment from one place to another, which comprises: an inflatable and deflatable laminated bladder element that operates for reuse multiple in the cushioning of packaged products, a gun member element for inflating and deflating the bladder element, a one-way valve element secured to the bladder element, the one-way valve element comprising: a housing element external, a member of base member disposed within the housing member, and having a hole formed therethrough to directly admit and expel a pressurized gas medium in and out of the bladder member; a longitudinally movable way, and which is secured in an elastic manner against a ring of the base member element for occasionally closing an inlet opening formed in the housing element, the housing element occasionally engaging in a fixed manner with the first nozzle member and end of the gun member element to open the one-way valve element, and receive directly through the forced large volume of the hole, the ambient air at a high velocity, at a discernable noise frequency thereof, the accommodation element operating on other occasions to connect firmly with the second end member element of the member member gun, to open the one-way valve element and evacuate the pressurized medium directly through the hole from the stowing bag, and having the bag to stow openings arranged in each of its four corners, to cooperate with the fastener , in order to facilitate the storage of a bag to stow deflated when not being used; which, when the bag is inflated, operates to cushion the products during shipment, and when it is deflated, it can be reused and subsequently inflated to cushion the items during shipment.

Description

APPARATUS FOR INFLATING AND DEFLATING A BAG TO ESTIBATE BACKGROUND OF THE INVENTION The present invention relates generally to bags for stowing, and to an element for inflating them, and more particularly to a reusable stowage bag, and to an associated pistol-type device which rapidly pressurizes the bag to an operative condition, and quickly deflates the bag when it stops using. The gun serves to quickly inflate, limit and control the internal pressure of the bag, and to quickly deflate the bag. The bags for stowing are used to cushion shipments of articles transported by rail, boat, truck, aircraft, or whenever it is necessary to place elastic members in order to fill gaps or spaces between the products in transit, and thus prevent them from move and be damaged before reaching the destination point. The storing bags can be disposable or reusable. Disposable bagging bags are made from inexpensive materials, such as paper, but even so, they are fragile and easily punctured, and the cumulative costs associated with them make their use uneconomical. Disposable stowage bags are most likely made from a gas-proof internal bladder constructed of a material such as polyethylene, and an outer cover or a containment member such as heavy paper. A disposable bag is effective to fill gaps between the cargo, between the cargo and the walls of a trailer, container, or other freight transport carrier, and thus prevent cargo damage that could result from movement around within the confines of the carrier. A deflated bag is placed between the loading articles, and subsequently pressurized with gas, usually ambient air, to a preselected pressure, such as 0.07 to 0.49 kg / cm2. The users of the disposable bags have been confronted with a number of problems during the inflation process. This type of bag is usually inflated with a high pressure air gun that injects air through a valve in the side or at the end of the bag. This type of valve is possibly constructed of different materials, such as a plastic or metal tube, a metal forcing spring, and polyethylene to heat seal the valve to an internal bladder of the bag, in order to make a air proof connection. In addition, when bags are inflated to typical high pressures of up to 8.4 kg / cm2, unless appropriate pressure regulating devices are incorporated in the structure of the stowage bag, an over-pressurized bag can scan and damage the load and / or the carrier. Also, if a bag were to be equipped with a pressure releasing device, the bag would deflate and could no longer provide the cushioning function for loading into a container. The prior art disclosures that are pertinent to the present invention are found in U.S. Patent Nos. 4,146,069 and 4,146,070 to Angarola; 3,426,891 to Marks, 4,076,872 to Lewicki; 3,442,402 to Baxter. The references of Angarola disclose devices to quickly inflate and pressurize bags to stow. Marks shows a load cushion construction consisting of an inflatable bladder surrounded by a woven cloth cover. Lewicki discloses pneumatic or similar cushions, where a more superior polyurethane sheet can be formed. Baxter's reference shows a stowing unit built to receive rod members. The reusable stowage bags are mainly made of single or multiple layers of rubber, plastic, or fabric, constructed of different materials, such as polyurethane laminated nylon, to form sheets of material to be linked together in order to make a bag for stow. The bag can be manufactured in any shape or size, but typically it is done in a rectangular configuration, of 121.92 centimeters by 121.92 centimeters, with an internal space or volume that is inflated until obtaining a bag to stow about 20.32 centimeters thick. The reusable bags provide a strong elastic member to cushion the load, but they are heavy, bulky, and take an extraordinary amount of time to inflate. In addition, the disinflation of a bag is inefficient, requires a long interval of time, and rarely, if it does, deflates sufficiently to accommodate an easy removal of a cushioning station between packages, receptacles , or stacked cargo boxes. SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a storing bag that includes inner and outer layers of plastic material bonded together, to inflate to a preselected volume of space therebetween, and a valve of self-closing fixed to the bag to admit or expel the environmental gas. It is a further object of the present invention to provide a load-bearing apparatus that includes a quick-inflate and deflate bag, a self-closing valve bonded thereto, and a gun member member that can be inflated and deflated rapidly. Operate at the moments when the bag is pressurized to a preselected pressure, and in which the pressure is subsequently evacuated to ambient conditions. A further object of the present invention is to provide a storing bag that can be inflated rapidly to a preselected low pressure, and that can be rapidly deflated to ambient conditions within a predetermined short period of time. Another object of the present invention is to provide a load-bearing apparatus that includes a quick-inflate and deflate bag that can be inflated and deflated, a self-closing valve attached thereto, and a gun member element having elements of Double nozzle to open and close the valve. A further object of the present invention is to provide an apparatus for cushioning packed packages of products during shipping, including a fast-inflate and deflate bag that can be inflated and deflated, a self-closing valve bonded thereto, and an airlock element. gun member having a first nozzle element effective to provide an air flow at a noise frequency of a first measurable value to open the self-closing valve, and effective to close the self-closing valve when the frequency of noise reach a second value changed significantly higher. A still further object of the present invention is to provide a method for cushioning stored products to embark on trucks and / or containers, by placing the deflated storing bags between the stored products, quickly inflating the bags in order to fill the gaps and spaces between the products during the shipment, rapidly deflating the bags when the products arrive at their destination, and reusing the bags for the subsequent cushioning of the products shipped from one destination to another. The above and other objects are achieved in accordance with the present invention, wherein a reusable stowage bag comprising an inflatable laminated bladder element, a self-closing valve element, secured to the bladder element, having the element provided, is provided. of valve an external housing element, a one-way valve element that can be moved longitudinally, elastically secured inside the housing element for the closing times of an opening therein, the housing element sometimes being fixedly connected to the first end nozzle element of the gun member element for receiving forced ambient air at a discernible noise frequency therefrom, and operating the housing element at other times to firmly connect with a second end nozzle member of the gun member element, to evacuate the pressurized medium from the stowage bag. The present invention also provides an apparatus for cushioning stacked packages of products during shipment from one place to another, which comprises a bag item for stowing, for inflating and deflating between the stacked packages of products, a self-sealing valve element. closure secured to the stowage bag member, which operates to admit and eject a gaseous medium to and from the stowed bag member, a pistol member member having a nozzle element to sometimes be connected in a releasable manner with the self-closing valve element, a compressor source element for providing a concentrated, high volume, high velocity flow of the gaseous medium at a discernible noise frequency through the nozzle element and the self-closing valve element, towards the stowed bag element, in order to inflate it, operating the nozzle element to induce an interruption of the flow of the gave gas when the inflation of the bag reaches a preselected pressurization therein, operating the interruption of the flow of the gaseous medium into the bag to stop the flow of the gaseous medium through the nozzle element, and create a noticeably higher noise frequency that the discernable noise during inflation of the bag, and operating the noise frequency remarkably higher to signal an operator in order to release the nozzle element of the self-closing valve.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and other features, objects, features, and advantages of the present invention, will become clearer upon a consideration of the following detailed description, with reference to the accompanying characteristics of the drawing, wherein: Figure 1 is a perspective view of an inflatable stowage bag, showing, adjacent thereto, a gun-type device or gun member to be connected sometimes with the bag for stowing in accordance with the present invention. Figure 2 is a side elevational view of the inflatable stowage bag shown in Figure 1, showing an element for carrying or carrying a bag, and an element for rapidly evacuating the medium from an inflated bag. Figure 3 is an enlarged elevated side view of the gun member shown in Figure 1, wherein an intermediate portion thereof has been sectioned in order to illustrate the manner in which air or other medium is selectively directed towards the former and second output ends of the gun member. Figure 4 illustrates the component parts of a disassembled self-closing valve assembly, shown in FIG.

Figure 1, which can be adapted to have an integrally fixed, molded, or otherwise secured end to a stowing bag, and an outer end housing that operates when connected with a first end of the gun member, for the purpose of to allow the flow of air to the bag. Figure 5 illustrates a nozzle element adaptable to be releasably positioned on the first or second outlet ends of the gun member, and having a portion thereof sectioned along the lines AA of Figure 6, to show a side view of the internal screen element to divert the medium flow therethrough. Figure 6 is a right side view of the nozzle element illustrated in Figure 5, showing additional details of the internal screen element seen therein. Figure 7 shows a telescopic handling rod separated into parts, having an adaptable end portion for connecting to a corner end of a stowing bag, in order to facilitate its placement between the stacks of packaged articles for your boarding Figure 8 is an out-of-phase adapter member for connecting to the end of the telescopic rod shown in Figure 7, and operating to facilitate placement of a stowage bag in confined confined spaces or on top of stacked items for shipment in trailers or containers. Figure 9 is a perspective view of a deflated stowage bag in the position to be placed between stacked boxes or containers of products shipped in a trailer. Figure 10 is a perspective view of the next step of the placed stowage bag, where an operator is in the process of connecting the gun apparatus to inflate the stowage bag. Figure 11 is a perspective view of the next progressive step of the operator, where the inflation of the bag for stowage has been substantially completed, in order to act as a protective cushion member during shipment of the boxes of stored products. Figure 12 is a high end view of an inflated stowage bag disposed between boxes or containers of stacked products shipped on a trailer, wherein the bag is in an operative stowage position in accordance with the present invention. DESCRIPTION OF A PREFERRED EMBODIMENT Referring now to Figure 1, there is shown a non-elastic stowage bag that has available an enclosed and sealed volume or space, and operates to inflate and deflate, generally identified by reference numeral 10. Bag can be formed of an inner layer of plastic material, such as polyurethane or other suitable combination, and an outer layer of plastic material, such as nylon or other suitable formulation. The inner layer and the outer layer are laminated together or otherwise bonded together, and thus form a preferred construction of a bag for stowing in accordance with the present invention. Bag 10 includes a self-closing one-way valve assembly, generally identified by reference numeral 12, integrally molded or otherwise secured to an end portion or any other preselected location of the bag, to allow entry and leaving the pressurized medium to or from the available internal space or volume disposed within the bag. As further shown in Figure 1, a gun type device or portable gun member, generally identified by reference numeral 14, has a plurality of nozzle elements sometimes adaptable to connect with the valve assembly 12, with the purpose of inflating and deflating the bag 10. The gun member 14 has a first end nozzle member 16 which operates when connected to the valve assembly 12, to force the opening of its internal self-closing mechanism and allow the flow of ambient air into the bag for pressurization to a preselected range of 0.21 to 0.7 kg / cm2 or another desired pressurized force of inflation. The gun also has a second end nozzle member 18 which operates when connected to the valve assembly 12 to force the opening of its internal self-closing mechanism, and thereby evacuate the pressurized medium from the bag so that it is deflates within a very short period of time, such as the complete evacuation of approximately 11.32 cubic meters to environmental conditions within a period of time between 15 and 30 seconds. The bag 10 may have an opening 20 in each of its four corners, which includes its optional reinforcement by means of a splint or bushing, which can be adjusted on a hook or other suitable fastening element, to facilitate storage of the bag deflated when not in use. In Figure 2 an optional form of construction is shown, wherein an upper portion of the bag is rolled up to form a tube type structure 22, which can receive through it a pole 24 or similar implements and thus provide an optional method for carrying the bag from one place to another, or for placing the distal ends of the pole on the fastener as an alternative storage configuration. Also disclosed is a quick release valve 25, which is effective when pulled to open, or is opened by an otherwise suitable element, and exposes the internal pressure to the atmosphere, to rapidly deflate the bag from full to full. lower pressurization, if this procedure is desirable. The bag can then be deflated completely by connecting the second nozzle element 18 to the valve 16, and operating the gun member 14. A telescopic rod 26 (see Figure 7) can also be provided adaptable to engage with an aperture 20 selected from the bag, in order to facilitate the placement of the bag between the stacked boxes of articles. In addition, an out-of-phase adapter member 28 (see Figure 8) may be provided to connect to the outer end of the rod 26. The adapter member 28 may have one end threadably connected to the outer end of the telescopic rod 26, and its other end operates to engage with an opening 20, such that the bag can be easily moved around, and conveniently placed in a narrow space between adjacent stacks of shipping items. Figure 4 shows a fragmentary portion of a first layer 30 and a second layer 32 of a reusable bag, wherein a base member 34 of the self-closing valve 12 is bonded to, or otherwise securely fixed to it. The base member 34 extends outwardly from the bag, and has formed at its outer end, a circumferential annular face surface 36, which provides a reactive base for an elastic spring 38. The self-closing valve 12, shown in FIG. the present disarmed for ease of understanding, includes the base member 34, the spring 38, a movable stop member 40, and a valve housing 42. The base member 34 has therethrough formed a hole 44 of a suitable diameter to allow a predetermined air or other gaseous medium to flow through it, in or out of the bag, to rapidly inflate or deflate it. The spring 38 has one end in contact with the annular face end surface 36 of the base member 34, and its other end can be adapted to fit on and around a peripheral surface 46 on the stop member 40, and can be seat against a stop surface 48 formed thereon. The stop member 40 includes guide fins 50 to facilitate longitudinal movement within a hole 52 of a predetermined diameter formed inside the valve housing 42. The stop member 40 operates to move longitudinally along a central axis of the valve. valve 12. When the valve is assembled, the stop member 40, forced by the spring 38, has a front ring surface 54 in sealing contact with an inlet opening 56 formed in an outer end of the valve housing 42. The member stop 40 is fitted with an O-ring 58, to provide a positive seal inside the valve housing and prevent any undesirable air leakage from an inflated bag. The valve housing has formed on it, post members 60 (only one is shown) to interlock with the complementary shaped groove element formed in the first nozzle element 16. The first nozzle element 16 is best seen in the Figure 5, and includes an outer circular connecting member 62, having an opening 64 at one end, of a size operable to slide on, and placed on, the end of a barrel of the gun 14. The connecting member 62 operates to slide on and around an outer circumferential surface of the valve housing 42, to engage therewith, such that the slots 74 slide over the posts or ears 60. The member 62 can then be twisted by a pre-selected portion of one revolution, to effect a tight connection with the valve 12. The member 62 has formed therein, a screen element 66, having a diameter substantially equal to the diameter meter of the front ring surface 54 of the valve assembly 12. When the nozzle member 16 is twisted above and secured to the housing 42, the screen element is urged against the front ring surface 54, which presses on the spring 38. , and connects the gun directly to the internal space of the bag 10. The force of the screen element against the front ring surface 54, is sufficient to overcome the resistance of the spring 38, which moves the stop member 40 longitudinally, opening the valve assembly 12, and the air flows into it until its inflation is completed. Figures 9 to 12 illustrate the manner in which a deflated bag can be placed between packages or stacked boxes containing products for embarking on trucks, containers, or other confined storage space. The deflated bag is placed by a worker in any available space between adjacent piles of packages, so that the valve assembly 12 of the bag 10 is accessible. Then the worker places the first nozzle member 16 of the gun member 14. in a twisted connection secured with the valve assembly 12 for its opening as described hereinabove. The gun member 14 is connected in a known manner to a supply of pressurized gaseous media, such as an air compressor (not shown). The worker, by operating a trigger mechanism 68, or other suitable element, connects the pressurized medium to flow through the open valve assembly 12. The operation of the trigger mechanism 68 allows the compressed air to flow through an inlet toward an annular chamber 70 (see Figure 3) of the gun 14, and then accelerated through a small ring nozzle 72 at a high speed of movement. This primary air stream assumes a predetermined profile, and is directed towards the first nozzle element 16. A low pressure area is created in the center of the chamber 70, which induces a high volume flow of surrounding air into the interior of the chamber. primary air current. The combined flow of primary and surrounding air is drawn from the barrel of the gun, and directed through the first nozzle member 16, into the bag, in a high volume, high speed flow. In accordance with the foregoing, this high volume and high velocity gaseous medium rate flows freely past the depressed and open stop member 40 of the self-closing valve 12, and rapidly inflates the bag to a preselected working pressure. The operation of the gun is based on a principle of air flow of an amplification of 10 to 1; that is, for example, the gun consumes 0.6509 cubic meters per minute at 7 kg / cm2, and delivers an output of 6,509 cubic meters per minute to 0.14 kg / cm2. In the operation of the invention, the operator connects the first nozzle element 16 to the self-closing valve 12 attached to the bag, which causes it to open, and then fires the gun to deliver the air to the bag. It is well known that the flow of air at a high velocity through a duct or cylinder of a certain diameter, creates an identifiable and measurable frequency of noise, which is easily discernible by the human ear. That is, a human ear can easily distinguish between the frequency of air traveling at a specific specific speed through a conduit that delivers either 0.6509 cubic meters per minute, or 6.509 cubic meters per minute. The frequency, or noise level, at 6,509 cubic meters per minute is considerably higher than at 0.6509 cubic meters per minute. In accordance with the above, when the operator connects the gun to the bag, and operates the trigger mechanism, the air flows into the bag until a balance is reached between the internal pressure of the bag and the pressure exerted by the air. which flows from the nozzle 16 of the gun into the bag. At this time, the principle of air flow over which the gun operates stops working, and air from the compressor flows away from the connection of the nozzle 16 and valve 12, back through the negative pressure side of the compressor. the gun, coming out through the nozzle 18. This so-called rearward flow of air, reaches a high travel speed, and results in a level of noise or frequency that is clearly recognized by the operator. The operator then knows that it is an appropriate time to disconnect the end of the first nozzle 16 at high pressure from the gun, from the self-closing valve 12. The valve closes, and the bag is inflated to, and remains in, your work condition As noted above, during the inflation of the bag, there is a remarkable degree of noise or frequency of change.

When the bag reaches full inflation, the flow of air through the first nozzle 16 is interrupted and stopped. Then the air is diverted through the chamber 70 of the gun 14, to exit through the second nozzle element 18. , and the noise associated with the same is of a high change or frequency. This change in noise frequency signals to the operator that it is an appropriate time to disconnect the first high pressure nozzle 16 from the valve of the bag. At this time, the force of the pressurized medium inside the bag keeps the valve assembly closed, and is effective to maintain the bag in a desired pressurization force. The appropriately inflated bag fills the space between, and cushions, the stacked boxes. After the packages of cushioned products are transported to a desired end point site for unloading, a worker places the second end nozzle member 18 of a gun member 14 in a secure connection with the valve assembly 12. The connection of the second nozzle element opens the valve 12 in the same manner as described hereinabove with reference to the first nozzle element 16. Activation of the trigger mechanism 68 connects the open valve assembly 12, and thus allows flow the pressurized medium out of, and quickly deflate, the bag. The flow of air out from the bag is induced and amplified in the same way, but inverted, to that described to fill the bag. That is, the velocity of the air exiting the bag is amplified by a factor of ten, and the bag empties completely in several seconds, instead of partially evacuating as is prevalent in the state of the art. Alternatively, as described hereinabove, the quick release valve 25 can be operated to substantially evacuate the bag, and subsequently the gun member 14 can be connected to the valve 12 to induce a complete deflation of the bag 10. As seen in Figure 3, the first nozzle element 16 of the gun 14 can be configured with the construction of the connecting member 62, to be secured with the valve 12, and to admit the pressurized medium into the bag 10 for its inflated. In a similar manner, a connecting member 62 can be adjusted to the second end nozzle member 18 of the gun 14, to cause the pressurized medium to exit the bag 14 for deflation. Although the present invention has been described with reference to the above preferred embodiments, it will be understood by those skilled in the art, that different changes may be made, and equivalences may be used to replace the elements thereof without departing from the scope of the invention. present invention. In addition, modifications may be made to adapt a particular situation or material to the teachings of the present invention, without departing from the scope of the present invention. Accordingly, it is intended that the invention not be limited to the particular embodiments disclosed in carrying out this invention, but that the present invention include all embodiments falling within the scope of the appended claims.

Claims (19)

1. NOVELTY OF THE INVENTION Having described the foregoing invention, it is considered as a novelty, and therefore, property is claimed as contained in the following: CLAIMS 1. A reusable bag to stow, to inflate and deflate in order to cushion products packaged during shipment from one place to another, which comprises: an inflatable and deflatable laminated bladder element that operates for multiple reuse in the packing of packaged products; a gun member element for inflating and deflating the bladder element; a one-way valve element secured to the bladder member; the one-way valve element comprising: an external housing element; a base member member inside the housing member, and having a hole formed therethrough to directly admit and expel a pressurized gaseous medium in and out of the bladder member; a one-way longitudinally movable valve member, and which is elastically secured against a ring of the base member member to occasionally close an inlet opening formed in said housing member; the housing element occasionally engaging in a fixed manner with the first end nozzle member of the gun member element to open the one-way valve element, and receive directly through the bore, ambient air forced into a high volume already a high speed, at a discernible noise frequency thereof; operating the housing element on other occasions to connect firmly with the second end nozzle element of the gun member element, to open the one-way valve element and evacuate the pressurized medium directly through the hole from the storage bag mentioned; and having the bag for stowing openings arranged in each of its four corners, to cooperate with the fastening element, in order to facilitate the storage of a deflated bag when not in use; whereby, when the bag is inflated, it operates to cushion the products during shipment; and when it is deflated, it can be reused and then inflated to cushion the items during shipment.
2. 2. A reusable bag for stowing in accordance with claim 1, characterized in that it includes a compressor source element to provide preselected pressurization in the stowage bag; operating the preselected pressurization inside the bag to stop the flow of ambient air through the first nozzle member, and create a noise frequency markedly higher than the discernable noise during inflation of the bag; and operating the remarkably higher noise frequency to signal an operator to release the first nozzle element of the one-way valve element.
3. 3. A reusable bag for stowage according to claim 2, characterized in that the stowage bag is inflated at a pressure of between 0.21 and 0.7 kg / cm2.
4. 4. A reusable bag for stowing according to claim 2, characterized in that the gun member element comprises a first nozzle element for inflating the bag to stow up to a volume of approximately 11.32 cubic meters, at a pressure of substantially 0.21 kg / cm2.
5. 5. A reusable storing bag according to claim 2, characterized in that the storing bag is inflated to a preselected volume of capacity within a period of substantially 15 seconds.
6. 6. A reusable bag for stowing according to claim 2, characterized in that the gun member element comprises a second nozzle element for deflating the bag storage element within a period of time between 15 and 30 seconds.
7. 7. A reusable bag for stowing in accordance with the claim in claim 2, characterized in that the pistol member element comprises the second nozzle element for connecting to the one-way valve element for self-opening, so that the stowage bag rapidly deflates.
8. 8. A reusable bag for stowing according to claim 2, characterized in that the pistol member element amplifies the supply of ambient air to the bag in a ratio of substantially 10 to 1.
9. 9. A reusable bag for stowing according to claim 8, characterized in that the supply of ambient air to the bag is amplified to substantially 0.6509 cubic meters at 7 kg / cm2.
10. A reusable storing bag according to claim 1, characterized in that the storing bag includes an upper portion thereof to form a tube-like structure element to occasionally receive a portable implement to carry the bag. from one place to another, and stored in it.
11. 11. A reusable bag for stowing according to claim 1, characterized in that it includes a telescopic rod element to cooperate with a selected opening disposed in the bag, to facilitate the placement of a deflated bag between the bundles of stacked items .
12. 12. A reusable bag for stowing according to claim 11, characterized in that it includes an adapter element out of phase to be connected to an external end of the telescopic rod element, to facilitate the movement and placement of the bag in narrow spaces between the adjacent stacks of packed items.
13. 13. A reusable bag for stowing in accordance with claim 1, characterized in that it includes a quick release valve element for immediately evacuating the pressurized gaseous medium from the bag, for a substantial deflation thereof.
14. 14. A reusable bag for stowing according to claim 1, characterized in that the bladder element is inflated to a volume of substantially 11.32 cubic meters, at a pressure of substantially 0.21 kg / cm2, within a period of time of substantially 15 seconds.
15. 15. A reusable bag for stowing according to claim 1, characterized in that the bladder element comprises a plurality of bonded sheet materials formed from a first layer of nylon, and a second layer of polyurethane laminated thereto.
16. 16. A reusable bag for stowing according to claim 1, characterized in that the bladder element comprises a plurality of sheet materials formed of a first layer of flexible material and a second layer of flexible material other than the same.
17. 17. A method for cushioning a plurality of packaged products disposed in stacks in a shipping container from one place to another, which comprises the steps of: placing a deflated bag storing between adjacent stacks of packaged products; connecting a gun member element to the one-way valve member secured to the aforementioned stowing bag, to admit the gaseous medium therein; securing the nozzle element of the gun member element to the one-way valve element in a coupling secured thereto, for its opening; operating the trigger member of the gun member member to force a high volume, high velocity flow of the gaseous medium through the self-closing valve into the stowage bag to inflate; continue forcing the gaseous medium into the bag to be stowed until it reaches a preselected pressurization in it, and until a frequency of noise that stops it is discernible; and removing the nozzle element from the gun member element of the self-closing valve when a second noise frequency reaches a change of a value substantially higher than the change in the discernible noise frequency that stops it.
18. 18. A method for cushioning a plurality of packaged products disposed in stacks in a shipping container from one place to another in accordance with claim 17, which comprises the step of: reconnecting the second nozzle element of the carrier element; pistol member with the self-closing valve for its opening, in order to rapidly evacuate the gaseous medium from the mentioned stowing bag. A method for cushioning a plurality of packaged products disposed in stacks in a shipping container from one place to another in accordance with claim 18, which comprises the steps of: removing the second nozzle element from the valve self-closing; and recovering the bag to be stowed from among the piles for subsequent reuse in the packing of packages of articles shipped from one place to another.