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Static elimination articles and methods for their use

A technology for static electricity and static reduction blankets, which is applied in the fields of static electricity, electrical components, and thin material processing, and can solve problems such as hidden safety hazards and contamination of the surface of formed parts.

Active Publication Date: 2016-08-03
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strong electrostatic fields associated with these charges can attract dust particles, fibers, bugs, hair, machining debris, etc., leading to contamination of the surface of the formed part
Large static charges that reside on formed parts can also pose a safety hazard
[0006] Existing Methods for Eliminating Static Charges on Formed Parts Are Flawed

Method used

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  • Static elimination articles and methods for their use
  • Static elimination articles and methods for their use
  • Static elimination articles and methods for their use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Static reduction blankets are made of polyester with one row of conductive fibers every twelve rows. Each conductive row consists of a ground pin made of polyester yarn with silver coating (purchased from Noble Biomaterials, Scranton, PA, USA). Each conductive row has loops made of 50% polyester and 50% spinning composition. The material is knitted into a sleeve form, and then the sleeve is cut axially with scissors to unfold into a sheet form. The blanket was installed on the winder of a pilot scale biaxially oriented process polyethylene terephthalate film processing line. Tape is used to physically attach the blanket to a conductive metal structural rod positioned above the roll of film being wound. The loop side of the blanket is configured "face down" when the film roll is being wound. Structural metal rods are in contact with the machine ground. use The two strips of 1181 tape improve the electrical contact of the blanket to the structural metal rods. E...

Embodiment 2

[0086] Static reduction blankets are made of polyester with one row of conductive fibers every twelve rows. Each conductive row consists of a ground pin made of polyester yarn with silver coating production. Each conductive row has loops made of 50% polyester and 50% spinning composition. The material is knitted into a sleeve form, and then the sleeve is cut axially with scissors to unfold into a sheet form. The felt was installed on the winder of a production scale biaxial orientation process polyethylene terephthalate film processing line. Tape is used to physically attach the blanket to a conductive metal structural rod positioned above the roll of film being wound. The loop side of the blanket is configured "face down" when the film roll is being wound. Structural metal rods are in contact with the machine ground. use The two strips of 1181 tape improve the electrical contact of the blanket to the structural metal rods. Each strip is in firm contact with the str...

Embodiment 3 to 5

[0088] Static reduction blankets are made of polyester with one row of conductive fibers every twelve rows. Each conductive row consists of a ground pin made of polyester yarn with silver coating production. Each conductive row has loops made of 50% polyester and 50% spinning composition. The material is knitted into a sleeve form, and then the sleeve is cut axially with scissors to unfold into a sheet form. The felt was installed on the winder of the production scale biaxially oriented process polyethylene terephthalate film processing line of Example 2. Tape is used to physically attach the blanket to a conductive metal structural rod positioned above the roll of film being wound. The loop side of the blanket is configured "face down" when the film roll is being wound. Structural metal rods are in contact with the machine ground. use The two strips of 1181 tape improve the electrical contact of the blanket to the structural metal rods. Each strip is in firm contact...

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Abstract

The invention discloses static elimination articles and methods for their use. The present disclosure describes a looped pile static reduction blanket or cloth, an apparatus including the looped pile static reduction blanket, and a technique to neutralize static and static patterns from a polymeric film surface during processing, to enable higher speeds and fewer defects during web transport and subsequent processing of wound film rolls, an apparatus including the looped pile static reduction cloth, and a technique to neutralize static from a polymeric shaped part during processing, to enable fewer defects. The looped pile static reduction blanket includes a static reduction engagement fabric that is resilient and can facilitate discharge of static from a web to ground before, during, and after contact with a charged web.

Description

technical field [0001] The present invention relates to static dissipating articles and methods of using the same. Background technique [0002] In order to increase the processing efficiency and processing capacity achievable by the methods used, many products are usually manufactured in continuous web form. The term "web" is used herein to describe a thin material that is manufactured or processed in the form of a continuous flexible strip. Illustrative examples include thin plastics, paper, textiles, metals, and composites of such materials. [0003] The operations described above generally require the use of one or more rolls (and in many cases more rolls) around which the web is transported throughout a series of handling, manufacturing steps, etc. The rolls are used for many purposes including, for example, unwinding a wound roll of web material, rotating the direction of the web, applying pressure to the web at the nip station, adjusting the position of the web thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05F1/02H05F3/02H05F3/04
CPCB65H2301/5133B65H27/00B65H2401/14B65H2404/533B65H2404/5511B65H2404/5331H05F3/02
Inventor 乔舒亚·M·雷特拉特布鲁斯·E·泰特克里斯·J·坦雷弗雷德·J·罗斯卡特伦斯·A·李凯文·B·纽豪斯
Owner 3M INNOVATIVE PROPERTIES CO