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Electrostatic resistant film and product including the same

An antistatic film and product technology, applied in the direction of static electricity, packaging item type, film/sheet adhesive, etc., can solve problems such as difficulty in observing components, poor transparency of cover tape, and component contamination

Inactive Publication Date: 2008-12-10
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cover tape of the invention has poor transparency, which makes it difficult to observe the components through it, and the heat-sensitive adhesive layer may contaminate the components

Method used

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  • Electrostatic resistant film and product including the same
  • Electrostatic resistant film and product including the same
  • Electrostatic resistant film and product including the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] figure 1 Shown is a schematic cross-sectional view of a transparent low-contamination antistatic film 1 according to an embodiment of the present invention. The base film 2 is a biaxially stretched BOPP film (also polypropylene, polyethylene, polycarbonate, celluloid, nylon, polyester, etc.), and one layer of conductive layer 3 is arranged on one side of the base film 2. The conductive layer 3 is a metal layer (it may also be a metal oxide layer), which can be realized by evaporation or magnetron sputtering. On the other side of the conductive layer 3 relative to the base film is a protective layer 4, the protective layer 4 is used to protect the conductive layer 3, and the protective layer contains particles 5 used to suppress the decline in the surface conductivity of the film, the particles 5 Mainly used to provide electrical continuity in the Z direction. The film has good transparency, low pollution, wear resistance and permanent antistatic properties.

Embodiment 2

[0053] figure 2 Shown is a schematic cross-sectional view of a cover tape 6 according to one embodiment of the present invention.

[0054] The cover tape 6 includes a base film 2 , a conductive layer 3 , a protective layer 4 , a release agent layer 7 and a strip-shaped adhesive layer 8 . The base film 2 is a biaxially stretched BOPP film with a thickness of 50 microns. On one surface of the base film 2, there is a conductive layer 3, which is a metal layer. There is a protective layer 4 on the other side of the conductive layer 3 relative to the base film, and the protective layer 4 is used to protect the conductive layer 3. The protective layer is polyurethane containing particles 5 used to suppress the decline in the surface conductivity of the film. Coating, particles 5 are mainly used to provide electrical conductivity in the Z direction. Also contain anti-adhesive filler 9 in protective layer 4, this anti-adhesive filler 9 and particle 5 can be the same material (see ...

Embodiment 3

[0056] The cover tape 6 of the present invention can be used in a carrier tape / cover tape system 14 for component packaging. Figure 4 A perspective view of a carrier tape / cover tape system comprising a carrier tape 15 and a cover tape 6 is shown. The carrier tape 15 has a pair of long sides 16 and one or more recesses 17 . A component 18 can be placed in the recess 17 . After the components 18 are put into the concave portion 17 of the carrier tape, the cover tape 6 is glued to the carrier tape through the long side 16 of the carrier tape so as to cover the concave portion 17 . In this way, components 18 can be loaded between the carrier tape 15 and the cover tape 6 . In order to open the cover tape 6 and transfer the components, the cover tape is finally stripped from the carrier tape / cover tape system 14 . Such as Figure 4 As shown, the middle portion 13 of the cover tape 6 (located between the two tear grooves 12) is peeled off, and the extension 19 of the cover tape ...

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Abstract

The invention relates to an antistatic membrane and articles containing the membrane. The membrane comprises: a basilar membrane; a conducting layer located on one surface of the basilar membrane; a protecting layer located on the surface of the conducting layer opposite to the basilar membrane to protect the conducting layer. The protecting layer contains particles restricting reduction of conductivity of the membrane surface and macromolecular film forming polymer. The grain diameter of at least part of particles is larger than the thickness of the protecting layer.

Description

technical field [0001] The invention relates to an antistatic film, in particular to a transparent and low-pollution antistatic film used for packaging cover tapes of components and parts. The invention also relates to articles comprising the film, such as cover tapes and systems comprising a carrier tape, said cover tape and optionally a tape package. Background technique [0002] In the field of component packaging, components are often developed and manufactured by a manufacturer and delivered to another manufacturer or user for further processing. For example, after a semiconductor chip is manufactured in one manufacturing plant or "clean room" facility, it is packaged and shipped to another manufacturer or user, such as a computer manufacturer, so that the manufacturer can mount it on a printed circuit board or similar device superior. Components mainly include, but are not limited to, memory chips, transistors, connectors, DIPS, capacitors, etc. In recent years, chi...

Claims

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Application Information

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IPC IPC(8): H05F3/02C08J7/043C08J7/044C08J7/046C09J7/29
CPCB65D85/38C08J2400/12C08K3/04C08K3/22C09J2400/163C08K3/041C08K3/017C09J7/29C08J7/0423C09J2301/204C09J2301/41C08J7/046C08J7/043C08J7/044C08L75/04
Inventor 杨立章金舟张琳琳张伟祥
Owner 3M INNOVATIVE PROPERTIES CO
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