METHODS FOR MAKING FASTENERS - 3M INNOVATIVE PROPERTIES CO

Title:

METHODS FOR MAKING FASTENERS

Document Type and Number:

WIPO Patent Application WO/2008/033629

Kind Code:

A3

Abstract:

There is provided a hook fastener capable of engaging a suitable loop fabric comprising a base, where at least one surface has a multiplicity of engaging projections having a top surface and an attached end that are arranged in a region to form one or more shapes. A method for forming the above fastener comprises providing a polymer particles and a base. Dispersing onto a contact release surface a multiplicity of polymers particles in at least one discrete area forming a predetermined shape and forming preform projections. The front surface of the base is fixed to the terminal ends of at least some of the preform projections then removed from the contact release surface in the form of the predetermined shape. The alternatively the preform projections can be provided uniformly on the contact release surface and selectively transferred to the base in the predetermined shape by masks or selective adhesion or the like. In a preferred method polymer particles are dispersed onto a contact release surface using electrostatic attraction to impact the particles onto the contact release surface.

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Inventors:

ZHANG ZHIQUN (US)
VENNE JANET A (US)
BECKER DENNIS L (US)
PRIOLEAU LORI-ANN S (US)

Application Number:

PCT/US2007/075783

Publication Date:

July 28, 2011

Filing Date:

August 13, 2007

Export Citation:

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Assignee:

3M INNOVATIVE PROPERTIES CO (US)

International Classes:

A44B18/00

Foreign References:

US5149573A	1992-09-22
US20030131453A1	2003-07-17
US20040222551A1	2004-11-11
US20030104137A1	2003-06-05

Attorney, Agent or Firm:

BOND, William J., et al. (Office of Intellectual Property CounselPost Office Box 3342, Saint Paul Minnesota, US)

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