Method and apparatus for measuring the peel strength of an adhesively bonded paper joint
First Claim
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1. An apparatus for measuring a peel strength of an adhesive joint comprised of:
- a paperboard means having first and second sides including an adhesive joint substantially located between said first and second sides;
a base means;
a force exerting means operatively connected at one end to said base means wherein said force exerting means is further comprised of a weight means;
a first clamping means operatively connected to another end of said force exerting means and said first side of said paperboard means;
a guiding means operatively connected to said base means and said first clamping means;
a second clamping means operatively connected to said second side of said paperboard means and said guiding means;
a peel strength indicating means operatively connected to said guiding means and located substantially between said first and second clamping means; and
a linear translation means operatively connected to said second clamping means for peeling said first and second sides of said paperboard means away from each other along said adhesive joint to determine said peel strength of said adhesive joint.
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Abstract
This invention relates to an apparatus and method for measuring the peel strength of a paper joint which is adhesively bonded. Such structures of this type, generally, allow the peel strength of the adhesively bonded joint to be accurately and repeatably measured in an inexpensive manner.
33 Citations
20 Claims
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1. An apparatus for measuring a peel strength of an adhesive joint comprised of:
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a paperboard means having first and second sides including an adhesive joint substantially located between said first and second sides; a base means; a force exerting means operatively connected at one end to said base means wherein said force exerting means is further comprised of a weight means; a first clamping means operatively connected to another end of said force exerting means and said first side of said paperboard means; a guiding means operatively connected to said base means and said first clamping means; a second clamping means operatively connected to said second side of said paperboard means and said guiding means; a peel strength indicating means operatively connected to said guiding means and located substantially between said first and second clamping means; and a linear translation means operatively connected to said second clamping means for peeling said first and second sides of said paperboard means away from each other along said adhesive joint to determine said peel strength of said adhesive joint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of measuring a peel strength of an adhesive joint located between two paperboard sheets, including a paperboard sheet means having an adhesive joint between said sample sheet means and first and second ends located adjacent to said adhesive joint and substantially parallel to each other, first and second clamping means, a force exerting means, a force dampening means, a peel strength indicating means, and a linear translation means, wherein said method is comprised of the steps of:
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clamping said first end of said paperboard sheet means in said first clamping means; clamping said second end of said paperboard sheet means in said second clamping means; translating said second clamping means by said linear translation means; exerting a force on said first clamping means by said force exerting means; regulating a force of said force exerting means by said force dampening means; peeling said first and second ends of said paperboard sheet means away from each other in order to breakup said adhesive joint; dampening a return force of said first clamping means; and measuring a peel strength of said adhesive joint by said peel strength indicating means. - View Dependent Claims (18, 19, 20)
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Specification