US2001014567A1PendingUtilityA1

Anti-static films and anti-static fabrics for use in manufacturing bulk bag liners and bulk bags

40
Assignee: SUPER SACK MFG CORPPriority: May 19, 1997Filed: Jan 8, 2001Published: Aug 16, 2001
Est. expiryMay 19, 2017(expired)· nominal 20-yr term from priority
Inventors:Craig Alan Nickell
Y10T442/3707Y10T442/2025B32B 2307/202Y10T428/24273Y10T442/674Y10T442/3813Y10T442/678B29C 48/15B29L 2031/712Y10T442/2926B29C 70/882B32B 2323/04Y10T442/3886B29C 48/07B32B 27/12B32B 33/00Y10T428/24331Y10T428/249984B32B 2553/00Y10T442/378B65D 88/165Y10T428/24322B32B 5/024B29C 48/08B32B 7/12
40
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

An anti-static film comprises one or more polymeric film layers having a layer of conductive, low capacitance material secured thereto. The polymeric film layer(s) may have pin holes formed therethrough. The conductive, low capacitance layer comprises one or more strands of conductive, low capacitance fiber arranged in a predetermined pattern. The polymeric film layer(s) are bonded one to the conductive, low capacitance material using a polymeric layer formed from the same material as the film layers. Alternatively, the layer of conductive, low capacitance material may be omitted, with the adhesive layer being extruded onto the polymeric layer having pin holes formed therethrough. Similarly, an anti-static fabric comprises one or more layers of woven polymeric material having a layer of conductive, low capacitance material secured thereto. Alternatively, the fabric may have or polymeric layer extruded thereon in which pinholes are formed.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . An anti-static film for use in fabricating bulk bag liners comprising: 
 a layer of polymeric film;    a layer of conductive, low capacitance fibers; and    a layer for permanently bonding the layer of polymeric film to the layer of conductive, low capacitance fibers.    
     
     
         2 . The anti-static film according to    claim 1    wherein the polymeric film layer is formed from polyethylene.  
     
     
         3 . The anti-static film according to    claim 1    wherein the layer of polymeric film has pin holes formed therethrough in a predetermined pattern.  
     
     
         4 . The anti-static film according to    claim 1    wherein the polymeric film layer and the bonding layer are formed from the same polymeric material.  
     
     
         5 . The anti-static film according to    claim 1    wherein the conductive, low capacitance layer comprises at least one length of conductive, low capacitance fiber arranged in a predetermined pattern.  
     
     
         6 . A method of manufacturing anti-static film for use in bulk bag liners comprising the steps of: 
 directing a length of polymeric film along a predetermined path;    positioning a layer of conductive, low capacitance material on the layer of polymeric film; and    bonding the length of polymeric film to the layer of conductive, low capacitance material.    
     
     
         7 . The method of    claim 6    wherein the bonding step is carried out by forming a layer of bonding material over the layer of conductive, low capacitance material and the polymeric film.  
     
     
         8 . The method of manufacturing anti-static film according to    claim 6    wherein the step of positioning a layer of conductive, low capacitance material is carried out by arranging at least one strand of conductive, low capacitance material on the polymeric film in accordance with a predetermined pattern.  
     
     
         9 . The method of manufacturing anti-static film according to    claim 6    wherein the step of directing a polymeric film along the predetermined path is further characterized by directing a polymeric film having pin holes formed therethrough in accordance with a predetermined pattern along a predetermined path.  
     
     
         10 . The method of manufacturing an anti-static film according to    claim 6    wherein the bonding step is further characterized by depositing a layer a polymeric adhesive comprising the same polymeric material as the polymeric film layer onto the polymeric film layer and thereby bonding the polymeric film layer to the conductive, low capacitance material.  
     
     
         11 . A method of fabricating anti-static film for use in manufacturing bulk bag liners comprising: 
 providing a polymeric film having pin holes formed therethrough according to a predetermined pattern; and    extruding a polymeric adhesive layer onto the film.    
     
     
         12 . The method according to    claim 11    wherein the film and the adhesive are formed from the same polymeric material.  
     
     
         13 . An anti-static fabric for use in fabricating bulk bags comprising: 
 a layer of polymeric fabric;    a layer of conductive, low capacitance fibers; and    a layer for permanently bonding the layer of polymeric fabric to the layer of conductive, low capacitance fibers.    
     
     
         14 . The anti-static fabric according to    claim 13    wherein the polymeric fabric layer is formed from polypropylene.  
     
     
         15 . The anti-static fabric according to    claim 13    wherein the bonding layer has pin holes formed therethrough in a predetermined pattern.  
     
     
         16 . The anti-static fabric according to    claim 13    wherein the polymeric fabric layer and the layer are formed from the same polymeric material.  
     
     
         17 . The anti-static fabric according to    claim 13    wherein the conductive, low capacitance layer comprises at least one length of conductive, low capacitance fiber arranged in a predetermined pattern.  
     
     
         18 . A method of manufacturing anti-static fabric for use in bulk bags comprising the steps of: 
 directing a length of polymeric fabric along a predetermined path;    positioning a layer of conductive, low capacitance material on the layer of polymeric fabric; and    bonding the length of polymeric fabric to the layer of conductive, low capacitance material.    
     
     
         19 . The method of    claim 18    wherein the bonding step is carried out by forming a layer of bonding material over the layer of conductive, low capacitance material and the polymeric fabric.  
     
     
         20 . The method of manufacturing anti-static fabric according to    claim 18    wherein the step of positioning a layer of conductive, low capacitance material is carried out by arranging at least one strand of conductive, low capacitance material on the polymeric film in accordance with a predetermined pattern.  
     
     
         21 . The method of manufacturing anti-static fabric according to    claim 18    wherein the step of directing a polymeric fabric along the predetermined path is further characterized by directing a polymeric film having pin holes formed therethrough in accordance with a predetermined pattern along a predetermined path.  
     
     
         22 . The method of manufacturing an anti-static fabric according to    claim 18    wherein the bonding step is further characterized by depositing a layer a polymeric adhesive comprising the same polymeric material as the polymeric fabric layer onto the polymeric fabric layer and thereby bonding the polymeric fabric layer to the conductive, low capacitance material.  
     
     
         23 . A method of fabricating anti-static fabric for use in manufacturing bulk bags comprising: 
 providing a polymeric fabric:    extruding a polymeric layer onto the fabric; and    forming pinholes in the extruded polymeric layer.    
     
     
         24 . The method according to    claim 23    wherein the fabric and the polymeric layer are formed from the same polymeric material.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.