Continuous molding of fastener products and the like and products produced thereby

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20070035060A1
SERIAL NO

11584874

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Improvements are disclosed for an apparatus for continuously molding small fastener elements integral with a base web from a flowable resin. The apparatus comprises a cylindrical mold roll rotatable about an axis and defining small fastener element-shaped mold cavities in the surface thereof, and pressure-applying means to apply operating pressure to force the resin into the cavities at a pressure zone. The pressure-applying means and mold roll define a mold gap therebetween for forming the base web. The advantageous use of relatively long mold rolls, to produce a correspondingly wide web, and the use of higher molding pressures, e.g. to form very small fastener elements, is enabled by various improvements, including means to maintain the mold gap at a desired thickness profile across the length of the molding region of the mold roll under operating pressure. In some cases the pressure-applying means includes a pressure roll, in other cases it includes a resin nozzle assembly or pressure head. In some other cases it includes a belt. Various control schemes are also disclosed, as are means to provide cooling. In some particularly useful embodiments, at least one of the rolls of the apparatus has a resiliently deformable surface. Methods of molding fastener elements directly on a sheet material, such as sandpaper, are also disclosed, as well as methods for laminating.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
VELCRO INDUSTRIES B.V.CURACAO23

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Formato, Richard M Shrewsbury, MA 22 336
Harvey, Andrew C Waltham, MA 62 1079
Jens, Stephen C Winchester, MA 31 485
Kingsford, Howard A Amherst, NH 44 449
Neumann, J Scott Natick, MA 7 90

Cited Art Landscape

Patent Info (Count) # Cites Year
 
VELCRO INDUSTRIES B.V. (1)
* 4775310 Apparatus for making a separable fastener 144 1986
 
The Procter & Gamble Company (1)
* 5116563 Process for producing a mechanical fastener 67 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
VELCRO BVBA (2)
* 8673097 Anchoring loops of fibers needled into a carrier sheet 2 2008
* 2008/0305,297 ANCHORING LOOPS OF FIBERS NEEDLED INTO A CARRIER SHEET 14 2008
 
3M INNOVATIVE PROPERTIES COMPANY (4)
8020262 Strip of male fastening means, patch cut therefrom, and fastening tape tab comprising such patch 13 2005
* 2008/0052,881 Strip of Male Fastening Means, Patch Cut Therefrom, and Fastening Tape Tab Comprising Such Patch 6 2005
9138957 Slit hook strips and laminates and articles containing the same 5 2010
9138031 Method of making a mechanical fastening strip and reticulated mechanical fastening strip therefrom 6 2011
* Cited By Examiner