In one method, a piece of nonwoven PET or PP fabric is formed into a tote bag using a bag forming device. Seams of the tote bag are ultrasonically welded using an ultrasonic bag welding device. The ultrasonic bag welding device includes at least one sonotrode. In another method, BOPP film is received and a full-color graphic is printed on the BOPP film for each tote bag using a printer. The printed BOPP film is received from the printer and nonwoven PP or PET fabric is received from a roll of nonwoven PP or PET fabric using a laminator. The printed BOPP film is laminated to the nonwoven PP or PET fabric. The printed BOPP film laminated to nonwoven PP or PET fabric is received from the laminator and a finished version of each tote bag is produced using an ultrasonic bag welding device.

The present invention discloses a vacuum storage bag and a preparation method thereof. The vacuum storage bag comprises a bag body, which is equipped with an extraction valve and a sealing zipper; the bag body is composed of an inner film layer and an outer film layer by glue laminating, a blocking layer is arranged on the surface of the inner film layer; and the outer film layer is made of cloth. The vacuum storage bag of the present invention is made of cloth and PE film. The cloth is soft and folding, thick and wear-resistant, not easy to be brittle, and has long service life. In addition, there are many types of cloth and PE film for preparing the vacuum storage bag prepared in this application, which can be selected according to needs, so that the vacuum storage bag prepared has a wider scope of application.

The present invention is directed to tamper-evident mesh material, methods of manufacture therefor, and tamper-evident bags manufactured therefrom. The tamper-evident mesh material of the present invention may be used, for example, in the manufacture of a variety of tamper-evident security bags for use in applications where it is desirable to detect any traces or evidence of tampering with or of unauthorized access to the contents of the bag.

A sack for realising civil engineering works, including a sack structure with two main faces defined by two respective equal main expanses of cloth that are joined over most of their periphery. The main expanses of cloth define an opening for introducing filling material into the sack structure when in use. The sack comprises at least one expanse of protective cloth whose resistance characteristics differ from the main expanses of cloth. The expanse of protective cloth is fastened to the outside of the sack structure so as to substantially cover a single main face thereof.

The present invention is directed to a bag for storing quilts, afghans, linens, blankets, hand-made clothing and other hand-made items. The present invention is further directed to a novel method of folding the item using interior flaps to protect the item. The storage bag of this invention includes an outer layer comprising a breathable, non-woven material, an interior layer that prevents damaging the quilt, a non-snagging sliding fastener proving access to an interior of the bag, and one or more interior flaps to protect the folded item.

Aerator device for introducing gas bubbles into a liquid and comprising a base member with a gas supply and an elastic perforated membrane attached to the base member, and further with a UV protecting cover member, said UV protecting cover member or at least a part thereof being arranged above the membrane to protect the membrane against UV radiation during shipping and storage.

A method of producing flexible polypropylene fabric bags with heat fused seams comprising providing fabric pieces, wherein each fabric piece has a coated side and an uncoated side; positioning fabric pieces so that a coated side of one fabric piece faces a coated side of another fabric piece; selecting an area of fabric to be joined for forming a seam or joint; applying heat to the area to be joined that is less than the melting point of the fabrics, for forming one or more seams or joints and wherein the heat fused seams or joints of a resulting polypropylene bag retains at least 85% of the fabric strength without using sewing machines.

A selectively openable and closable, outdoor storage bag that is at least water-resistant includes a body portion made of a flexible, waterproof, bag material, the bag material comprising a plurality of waterproof welded seams that define a predetermined shape of the body portion and an opening, the body portion defining an interior space within the body portion; a closure mechanism joined to the body portion by a welded seam proximate a periphery of the opening, the closure mechanism configured to selectively open and close the opening and provide a seal that is at least water-resistant when the opening is closed; a flap of the bag material that extends from the body portion and covers the closure mechanism; and a plurality of anchor points attached to an exterior surface of the body portion, wherein the body portion of the bag is waterproof and the seal is at least water-resistant.

An equipment containment and transport assembly (20, 120) includes an open-top equipment-receiving primary bag (22, 122) having upstanding sidewall structure (26, 126) equipped with lifting lug openings (30, 130), and a bottom wall (28, 128). The assembly (20, 120) further has a flexible sleeve (24, 124), which is secured to the sidewall structure (26, 126) and is shiftable between a ready position surrounding the sidewall structure (26, 126) and a deployed position extending upwardly for closure or the assembly (20, 120). When deployed, the sleeve (24, 124) covers the lug openings (30, 130). The assembly (20, 120) is particularly useful for containment and shipping of electrical transformers.

A leak-tight/water-proof transformer containment bag includes (i) an outer puncture-resistant liquid-barrier fabric bag with a bottom having an oil-absorbent cushioning mat; (ii) a middle tear-resistant liquid-impervious continuous-sheet bag liner secured inside the outer bag; (iii) an inner puncture-resistant liquid-barrier fabric bag secured inside the liner; the bottom of the inner bag having outer and inner cushioning oil-absorbent mats; the outer bag, middle liner and inner bag being secured together at their open ends; (iv) lifting loops secured on opposite sides at the front and back of the outer bag and extending above the top of the outer bag to enable grabbing and lifting the lifting loops from above; (v) reinforcing bands secured around the outer bag and lifting loops; and (vi) a duffel top secured openly over the open top of the bags; the duffel top having a closure for closing the duffel top and closing off the top of the bags.