Interfolded napkins and method for interfolding napkins
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-003/04
B31D-005/04
B31F-005/00
출원번호
US-0088554
(2013-11-25)
등록번호
US-9108383
(2015-08-18)
발명자
/ 주소
Carlson, Paul
출원인 / 주소
SCA HYGIENE PRODUCTS AB
대리인 / 주소
Drinker Biddle & Reath LLP
인용정보
피인용 횟수 :
1인용 특허 :
12
초록▼
A rectangular stack of interfolded rectangular napkins including a plurality of napkins, each napkin in the stack comprising a first fold in a first direction, and a second fold in a second direction perpendicular to the first direction and bisecting the first fold and the napkin in the second direc
A rectangular stack of interfolded rectangular napkins including a plurality of napkins, each napkin in the stack comprising a first fold in a first direction, and a second fold in a second direction perpendicular to the first direction and bisecting the first fold and the napkin in the second direction, the intersecting first and second folds dividing the napkin into four panels with a pair of adjacent panels located on each side of the second fold, wherein each of the napkins within the stack includes at least one pair of panels arranged in the stack at a level between two pairs of adjacent panels of another of the absorbent napkins within the stack.
대표청구항▼
1. A stack of interfolded rectangular napkins comprising a plurality of napkins, each napkin in said stack comprising a first fold in a first direction, and a second fold in a second direction and intersecting said first fold, said intersecting first and second folds dividing said napkin into panels
1. A stack of interfolded rectangular napkins comprising a plurality of napkins, each napkin in said stack comprising a first fold in a first direction, and a second fold in a second direction and intersecting said first fold, said intersecting first and second folds dividing said napkin into panels with a pair of adjacent panels located on each side of said second fold, wherein each of said napkins within said stack comprises at least one pair of panels arranged in the stack at a level between two pairs of adjacent panels of another of said napkins within said stack,wherein said first fold divides each said napkin into a smaller part and a larger part, wherein the area of the smaller part is between ⅕ and ½ of the area of the larger part, andwherein said second fold of each of said napkins is folded such that the smaller parts on either side of said second fold are arranged to be separated by at least one larger part of the same napkin. 2. The stack of napkins according to claim 1, wherein said napkins are arranged in said stack with said first folds arranged on different sides of said stack. 3. The stack of napkins according to claim 1, wherein the second fold bisects said first fold and said napkin in said second direction and adjacent napkins are interfolded so as to overlap in a direction of equal width, such that each napkin in said stack overlaps each adjacent napkin an approximately equal extent. 4. The stack of napkins according to claim 1, wherein said stack has opposing first and second sides, and wherein said napkins are arranged in said stack with said first folds arranged in an alternating sequence along said first and second opposing sides of said stack such that each napkin is arranged with said first fold opposite said first fold of any adjacent napkin in said stack. 5. The stack of napkins according to claim 1, wherein each of said napkins is a single ply paper napkin having a basis weight of from 10 to 20 lb. 6. The stack of interfolded napkins according to claim 1, wherein each of said napkins bears an embossed surface relief applied by embossing rollers during a converting phase of manufacturing said napkins. 7. The stack of napkins according to claim 1, wherein each of said absorbent napkins is a single ply paper napkin having a basis weight of from 11 to 17 lb. 8. The stack of napkins according to claim 1, wherein each of said napkins is a single ply paper napkin having a basis weight of from 12 to 15 lb. 9. The stack of napkins according to claim 1, wherein each of said napkins is a single ply paper napkin having a basis weight of about 13 lb. 10. A stack of interfolded rectangular napkins comprising a plurality of napkins, each napkin comprises a first fold along a first fold line extending in a first direction and a second fold along a second fold line extending in a second direction and intersecting said first fold line, said first and second folds dividing said napkin into panels with a pair of adjacent panels located on each side of said second fold, wherein each of said napkins within said stack comprises at least one pair of panels arranged in the stack at a level between two pairs of adjacent panels of another of said napkins within said stack,wherein said first fold line is located such that panels on one side of the first fold line each has a first length in the second direction and panels on the opposite side of the first fold line each has a second length in the second direction, andwherein said second length is at most about four times said first length and at least about two times said first length. 11. The stack of napkins according to claim 10, wherein said first fold is located such that said second length is twice said first length. 12. The stack of napkins according to claim 10, wherein said first fold is located such that said second length is at most about three times said first length and at least about two times said first length. 13. A method of forming a stack of interfolded napkins, the method comprising: a) providing a plurality of non-folded napkins;b) folding each said napkin along a first axis to form a first fold, wherein said first fold is made to divide said napkin into a smaller part and a larger part, wherein the area of said smaller part is between ⅕ and ⅓ of the area of said larger part;c) folding each said napkin along a second axis to form a second fold that intersects said first fold, wherein said intersecting first and second folds divide said napkin into panels with a pair of adjacent panels located on each side of said second fold, each pair of adjacent panels comprising a smaller panel formed from said smaller part of said napkin and a larger panel formed from said larger part of said napkin, said smaller panels on either side of said second fold are arranged to be separated by at least one larger panel of the same napkin; andd) forming a stack of interfolded napkins by placing said napkins with said paired panels of said folded napkins in an overlapping configuration and by inserting a pair of adjacent panels of a following napkin between said pairs of adjacent panels of a preceding napkin within said stack. 14. The method according to claim 13, wherein said napkins are arranged in said stack said first folds arranged on different sides of said stack. 15. The method according to claim 13, wherein the second fold bisects said first fold and said napkin in said second direction and adjacent napkins are interfolded so as to overlap in a direction of equal width, such that each napkin within said stack overlaps each adjacent by an approximately equal extent. 16. The method according to claim 13, wherein said stack has opposing first and second sides, and wherein said napkins are arranged in said stack with said first folds arranged in an alternating sequence along said first and second opposing sides of said stack such that each napkin is arranged with said first fold opposite said first fold of any adjacent napkin in said stack. 17. The method according to claim 13, wherein each of said napkins bears an embossed surface relief applied by embossing rollers during a converting phase of manufacturing said napkins. 18. A method of forming a stack of interfolded napkins, the method comprising: a) providing a plurality of non-folded napkins;b) folding each said napkin along a first axis to form a first fold, wherein said first fold is made to divide said napkin into a smaller part and a larger part;c) folding each said napkin along a second axis to form a second fold that intersects said first fold, wherein said intersecting first and second folds divide said napkin into panels with a pair of adjacent panels located on each side of said second fold, each pair of adjacent panels comprising a smaller panel formed from said smaller part of said napkin and a larger panel formed from said larger part of said napkin; andd) forming a stack of interfolded napkins by placing said napkins with said paired panels of said folded napkins in an overlapping configuration and by inserting a pair of adjacent panels of a following napkin between said pairs of adjacent panels of a preceding napkin within said stack,wherein said first fold line is in a location such that panels on one side of the first fold line each has a first length in the second direction and panels on the opposite side of the first fold line each has a second length in the second direction, andwherein said second length is at most about four times said first length and at least about two times said first length. 19. The method according to claim 18, wherein said first fold is located such that said second length is twice said first length. 20. The stack of napkins according to claim 18, wherein said first fold is located such that said second length is at most about three times said first length and at least about two times said first length.
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