High strength ribbon-woven disposable bag for containing refuse
An ultra-strong tear resistant, cut resistant, puncture resistant bag having a high shear strength or modulus is provided by weaving ribbons of flat polypropylene sheet into a bag. The bag is formed by weaving a cylindrically shaped object, cutting the object transversely and sealing up one end to form the bag. The physical properties of the ribbon-woven bag easily accommodate holding refuse including bricks, wood with nails, glass and other refuse in a lightweight disposable bag. In an alternative embodiment, the ribbon-woven bag is overlain with sheets laminated to the exterior of the bag to provide a fluid-tight container.
1. An ultra strong, tear-resistant, puncture-resistant bag having a high tear strength, comprising:
a ribbon-woven bag having crossed woven ribbons of flat polypropylene sheet devoid of low melting temperature bonding layers between the crossed ribbons, said bag formed in a cylinder and stitched at one end to complete the bag, wherein the stitch count for said bag is 100 per inch.
2. The bag of claim 1 , wherein the width of said ribbons is between 3 and 6 millimeters.
3. The bag of claim 2 , wherein said ribbons have a 4- millimeter thickness.
4. The bag of claim 2 , wherein the Mass/Unit Area in oz/yd 2 of said bag is 2.2.
5. The bag of claim 2 , wherein the grab strength of said bag in warp pounds is 121.
6. The bag of claim 2 , wherein the grab strength of said bag in filling pounds is 98.
7. The bag of claim 2 , wherein the trapezoidal tear strength of said bag in warp pounds is 39.
8. The bag of claim 2 , wherein the trapezoidal tear strength in filling pounds of said bag is 32.
9. The bag of claim 2 , wherein the burst strength in psi of said bag is 141.
10. The bag of claim 2 , wherein the burst strength in psi of said bag with a 16-penny nail hole is 100.
11. The bag of claim 2 , wherein the burst strength in psi of said bag with a 0.25″ spike hole is 80.
12. The bag of claim 2 , wherein said bag further includes a liquid-tight layer laminated thereto.
13. The bag of claim 12 , wherein said liquid-tight layer is laminated to the exterior of said bag.
14. The bag of claim 12 , wherein said liquid-tight layer includes a sheet of polypropylene film.
15. The bag of claim 14 , wherein said polypropylene film is heat-sealed to said bag.
16. The bag of claim 1 , wherein said bag measures 40″ by 29″ and weighs less than 85 grams.
17. A method of removing refuse having sharp points or edges in an economical fashion, comprising the step of locating the refuse in a disposable ribbon-woven polypropylene bag devoid of bonding layers between the ribbon crossovers, the bonding layers having a melting point lower than that of the ribbon, the bag formed in a cylinder and stitched at one end to complete the bag, the bag having sufficient tear resistance, burst resistance and light enough weight to successfully retain the refuse without failure, wherein the stitch count for said bag is 100 per inch.
18. The method of claim 17 , wherein the bag is made of polypropylene ribbons of 3 millimeters to 6 millimeters.
19. The method of claim 18 , wherein the thickness of the ribbons is 4 millimeters.
20. The method of claim 18 , wherein the Mass/Unit Area in oz/yd 2 is 2.2.