Non-Tacky Adhesive Fastening System For Use In Consumer Products
a non-tacky, adhesive technology, applied in the direction of thin material processing, medical science, apparel, etc., can solve the problems of hook rigidity, irritation, and difficulty in adjusting the adjusting position of the adjusting position,
Inactive Publication Date: 2010-10-07
DALAL URMISH POPATLAL +4
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The system ensures that the fastening system remains functional and easy to separate without damage, even after aging, and maintains sufficient strength during use, enhancing the versatility and durability of consumer goods.
Problems solved by technology
While mechanical and adhesive fastening systems provide certain consumer benefits, each system also has significant drawbacks.
These types of mechanical fasteners may have a tendency to attach to undesired surfaces such as clothing, carpet, or the wearer.
Furthermore, hooks are generally rigid and may be a source of irritation if used in products which are placed in close contact to a wearer's skin.
Another problem often associated with mechanical type fasteners is that they may become damaged during the high-speed formation process required for commercially viable manufacture of consumer goods such as diapers.
For example, hooks tend to get damaged during manufacture, and other mechanical type fasteners such as buttons, tab and slots, or the like can also become damaged, torn, or otherwise impacted by high speed handling.
Another problem associated with mechanical fasteners is that they may not exhibit the requisite integrity for use in consumer goods.
However, hook and loop fastening systems may prove inadequate for the peel force demands of a pant-type diaper.
If peel forces are too low, a child may be able to remove the diaper when such removal is undesired.
Another potential drawback of conventional mechanical fasteners, particularly in pant-type diapers, is that such fasteners may need to be located in an area of the diaper without stretch properties.
This may create a design paradox if the mechanical fastener is to be located in an area exhibiting stretch properties such as the side panels of a pant-type diaper.
The compromise made is typically to limit the size of the hook and loop fastening area which results in a lack of versatility of the product and can diminish the desired fastening strength of the side panels of the article.
Like mechanical fastening systems, adhesive fastening systems also have drawbacks.
One such drawback of an adhesive fastening system includes the use of a traditional adhesive that sticks to surfaces indiscriminately.
Such indiscriminate adhesive fastening systems are not ideal for use in consumer products such as diapers where adhesion of the fastener to skin, hair, or clothing is undesirable.
Another drawback of adhesive fastening systems is that the system may exhibit “lock-up” after a period of time in an engaged configuration.
In many consumer goods with an adhesive fastening system, lock-up is a significant problem because the consumer good is manufactured with the fastening system already engaged (i.e., pre-engaged).
During the manufacture, transport, and storage of pant-type diapers, a pre-engaged adhesive may be engaged for several weeks or months and may experience elevated pressure and temperature.
The diaper would be considered undesirable since unfastening the pre-engaged system would prevent further refastenability of the diaper.
Consumer testing has shown that fastening systems that exhibit a peel force of greater than about 12 N / inch, as measured by a T-Peel test, are viewed as being difficult to separate.
A further drawback of pre-engaged adhesive fastening systems is that, if the system does not exhibit lock-up or require an excessive separation force, the system may exhibit poor refastenability.
While the problems associated with mechanical and adhesive fastening systems have been presented in regard to pant-type diapers, the problems are equally applicable to similar fastening systems on other consumer and commercial products.
Method used
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example 1
[0190]Example 1 comprises an adherent of D1102 and an adherend of PET. The Kraton D1102 is supplied as pellets. Kraton D1102 is extruded into about a 3 mil thick film. D1102 is a styrene / butadiene / styrene triblock elastomer having 16% diblock, and 28% styrene. The weight average molecular weight of the D1102 was determined to be 71 kDa (molecular weight is determined by gel permeation chromatography using polystyrene standards in tetrahydrofuran). D1102 has a supplier reported melt flow rate of 6 g / 10 min (as measured by International Organization for Standardization method ISO 1133 at the conditions of 200° C. / 5 kg).
example 2
[0191]Example 2 comprises an adherent of D1102 (as described in Example 1 above) and a adherend of oPA 54.
example 3
[0192]Example 3 comprises an adherent of D1102 (as described in Example 1 above) and a adherend of oPA 40.
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Abstract
A non-tacky adhesive fastening system may comprise an engaging member having an engaging surface with a non-tacky adherent disposed thereon and a receiving member having a receiving surface with a non-tacky adherend disposed thereon. The non-tacky adherent may be pre-engaged to the non-tacky adherend. The non-tacky adhesive fastening system, after aging, exhibits a T-Peel of less than about 12 N / inch and is refastenable.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]This application is a continuation of application Ser. No. 11 / 324,486, filed Jan. 3, 2006, the substance of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a non-tacky adhesive fastening system having a non-tacky adherent and a non-tacky adherend in a pre-engaged configuration that may be peeled apart with a low force while maintaining adequate refastenability. More particularly, the present invention relates to consumer goods having such a fastening system which provides refastenability.BACKGROUND OF THE INVENTION[0003]Fastening systems are widely used in a variety of applications where closure of components is required. Certain fastening systems are refastenable in that they are capable of multiple openings and closures. Items such as diapers and containers storing foodstuff or other consumer goods are commonly equipped with a fastening system and, typically, a refastenable fastening...
Claims
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IPC IPC(8): A61F13/58A61F13/62B32B3/06C09J7/02
CPCA61F13/15203Y10T428/24008A61F13/58
InventorDALAL, URMISH POPATLALMCKIERNAN, ROBIN LYNNKLINE, MARK JAMESHUHN, WOLFGANG EDGARCORZANI, ITALO
OwnerDALAL URMISH POPATLAL