Abstract A device for guiding and handling an article such as a web so that the transfer of static electric charge to or from the web is kept to a minimum when the web and the device are in moving contact. In one embodiment the device comprises a roller with an electrically grounded conductive inner member and an outer member of an elastomeric plastic comprising a mixture of a vinyl chloride resin and alkyl phthalyl alkyl glycolate. The device is particularly useful in the guiding of photographic film since the elastomeric properties of the plastic prevent slip between the device and the web and contact of the film with the device will result in very little static charge being imparted to the film. The device is also antistatic in that no appreciable charge will accumulate on its surface when in use.
The invention of claim 1 wherein said outer layer of elastomeric plastic is comprised of a vinyl chloride resin, butyl phthalyl butyl glycolate and ethyl phyhalyl ethyl glycolate.
Claim 2
Dependent Claim
33 words
The invention of claim 2 wherein said outer layer is comprised by weight of approximately 79 percent vinyl chloride resin, 19.3 percent butyl phthalyl butyl glycolate and 1.7 percent ethyl phthalyl ethyl glycolate.
Claim 3
Dependent Claim
68 words
A guide means for minimizing the transfer of electric charge to or from an article with which it is in moving contact, said guide means comprising: an electrically grounded electrically conductive member: An elastomeric plastic layer carried by said member and forming the article-contacting surface of said guide means; said elastomeric plastic layer being comprised of a vinyl chloride resin and at least one alkyl phthalyl alkyl glycolate.
Claim 4
Dependent Claim
27 words
The invention of claim 4 where said elastomeric plastic layer is comprised of a vinyl chloride resin and butyl phthalyl butyl glycolate and ethyl phthalyl ethyl glycolate.
Claim 5
Dependent Claim
81 words
A roller for minimizing the transfer of electric charge to or from a web of light-sensitive photographic film with which said roller is in driving relationship, said roller comprising: an inner electrically conductive member having a surface for supporting a web; an outer layer of elastomeric plastic material covering said supporting surface and forming the web-contacting surface of said roller; said outer layer of elastomeric plastic being comprised of a vinyl chloride resin and at least one alkyl phthalyl alkyl glycolate.
Claim 6
Dependent Claim
29 words
The invention of claim 1 wherein said outer layer of elastomeric plastic is comprised of a vinyl chloride resin and butyl phthalyl butyl glycolate and ethyl phthalyl ethyl glycolate.