IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0335583
(2002-12-31)
|
발명자
/ 주소 |
- Bekele,Solomon
- Douglas, III,Richard E.
- Vaughn, Jr.,Grady Franklin
- Kinard,David
- Kannankeril,Charles
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
31 |
초록
▼
The invention provides an absorbent pad for a case-ready package that has a controlled rate of wicking. The packaging comprises a support member, a food product that exudes liquids positioned on the support member, an absorbent pad between the food product and the support member, and a lid member en
The invention provides an absorbent pad for a case-ready package that has a controlled rate of wicking. The packaging comprises a support member, a food product that exudes liquids positioned on the support member, an absorbent pad between the food product and the support member, and a lid member enclosing the package. The absorbent pad is composed of an upper layer, an intermediate absorbent layer, and a lower layer. The upper and lower layers extend beyond the periphery of the absorbent layer and are attached directly to one another. Preferably, the upper and lower layers are composed of nonwoven materials that are coated with a hydrophilic composition. Typically the upper layer will be a spunbonded/meltblown/spunbonded web and the lower layer will be a spunbonded web. The hydrophilic coating wicks liquid exuded by the food product into the absorbent layer, and therefore prevents the accumulation of liquids within the support member. Changing the amount of hydrophilic coating on the upper layer will decrease or increase the rate of wicking that occurs at the upper layer. Thus, to prevent drying from occurring within the food product the rate of wicking can be controlled by changing the amounts of hydrophilic coating present on the layers.
대표청구항
▼
What is claimed is: 1. An absorbent pad comprising: a liquid-permeable upper layer, a liquid-permeable lower layer, and an absorbent layer disposed between said upper and lower layers, wherein said upper and lower layers extend outwardly beyond the periphery of said intermediate layer, and said upp
What is claimed is: 1. An absorbent pad comprising: a liquid-permeable upper layer, a liquid-permeable lower layer, and an absorbent layer disposed between said upper and lower layers, wherein said upper and lower layers extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said intermediate layer, such that said intermediate absorbent layer is confined within the bounds of said upper and said lower layers, said upper and lower layers comprising nonwoven fibrous webs having hydrophilic composition coated thereon, and wherein said lower layer has a greater amount of hydrophilic composition coated thereon than said upper layer. 2. An absorbent pad according to claim 1, wherein said upper and lower layer hydrophilic compositions are independently selected from the group consisting of alkylphenol ethoxylates, alkylphenyl polyethylene glycol ethers (including alkylaryl polyether alcohol, polyethylene glycol mono-(4-octylphenyl) ether, polyethylene glycol mono-(4-tertoctylphenyl) ether, polyoxyethylated octylphenol, ethoxylated octylphenol, octylphenol ethyleneoxidex where X stands for the average units of ethylene oxide), polyethylene glycol, alkylphenol, polypropylene glycol, polysorbates, fatty amine oxides, linear alcohol ethoxylates, alkanolamides, block copolymers of ethylene oxide and propylene oxide, and mixture thereof. 3. An absorbent pad according to claim 1 wherein said lower layer absorbs liquid at a rate greater than said upper layer. 4. An absorbent pad according to claim 1, wherein said upper layer nonwoven is a spunbonded/meltblown/spunbonded trilaminate construction. 5. An absorbent pad according to claim 4, wherein said upper layer nonwoven is selected from the group consisting of polyolefin, polyester, polypropylene, and polyamide thermoplastic fibers. 6. An absorbent pad according to claim 1, wherein said intermediate absorbent layer comprises a superabsorbent. 7. An absorbent pad according to claim 6, wherein at least some of the superabsorbent is present in granular form. 8. An absorbent pad according to claim 1, wherein said intermediate absorbent layer comprises a layer of wood fluff and a layer of tissue paper. 9. An absorbent pad according to claim 8, wherein said intermediate absorbent layer further comprises a superabsorbent. 10. An absorbent pad according to claim 1, wherein said upper layer is attached to said lower layer with an adhesive. 11. An absorbent pad according to claim 1, wherein said upper layer is attached to said lower layer with a heat seal. 12. An absorbent pad comprising: a liquid-permeable upper layer, a liquid-permeable lower layer, and an absorbent layer disposed between said upper and lower layers, wherein said upper and lower layers extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said intermediate layer, such that said intermediate absorbent layer is confined within the bounds of said upper and said lower layers, said upper and lower layers comprising nonwoven fibrous webs having hydrophilic composition coated thereon, said lower layer having a greater amount of hydrophilic composition coated thereon than said upper layer, and wherein said lower layer nonwoven is selected from the group consisting of polyolefin, polyester, polypropylene, and polyamide. 13. An absorbent pad according to claim 12, wherein said upper layer hydrophilic composition is present on said upper layer in an amount from 0.05 to 1.0 percent based on the weight of said upper layer. 14. An absorbent pad according to claim 12, wherein said lower layer hydrophilic composition is present on said lower layer in an amount from 0.05 to 10 percent based on the weight of said lower layer. 15. An absorbent pad according to claim 12, wherein said lower layer hydrophilic composition is present on said lower layer in an amount from 0.5 to 1 percent based on the weight of said lower layer and said upper layer hydrophilic composition is present on said upper layer in an amount from 0.1 to 0.35 percent based on the weight of said upper layer. 16. An absorbent pad comprising: a liquid-permeable upper layer, a liquid-permeable lower layer, and an absorbent layer disposed between said upper and lower layers, wherein said upper and lower layers extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said intermediate layer, such that said intermediate absorbent layer is confined within the bounds of said upper and said lower layers, said upper and lower layers comprising a spunbonded/meltblown/spunbonded trilaminate construction having hydrophilic composition coated thereon. 17. An absorbent pad according to claim 16, wherein said lower layer has a greater amount of hydrophilic composition coated thereon than said upper layer. 18. An absorbent pad comprising: a liquid-permeable upper layer, a liquid-permeable lower layer, and an absorbent layer disposed between said upper and lower layers, wherein said upper and lower layers extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said intermediate layer, such that said intermediate absorbent layer is confined within the bounds of said upper and said lower layers, said upper layer comprises a spunbonded/meltblown/spunbonded trilaminate construction having hydrophilic composition coated thereon, and said lower layer comprises a nonwoven fibrous web having hydrophilic composition coated thereon, and wherein said lower layer has a greater amount of said hydrophilic composition coated thereon than said upper layer. 19. An absorbent pad according to claim 18, wherein said lower layer wicks liquids at a greater rate than said upper layer. 20. An absorbent pad according to claim 18, wherein said intermediate absorbent layer comprises a superabsorbent. 21. An absorbent pad according to claim 20, wherein at least some of the superabsorbent is present in granular form. 22. An absorbent pad according to claim 18, wherein said intermediate absorbent layer comprises a layer of wood fluff and a layer of tissue paper. 23. An absorbent pad according to claim 22, wherein said intermediate absorbent layer further comprises a superabsorbent. 24. An absorbent pad according to claim 18, wherein said upper layer is attached to said lower layer with an adhesive. 25. An absorbent pad according to claim 18, wherein said upper layer is attached to said lower layer with a heat seal. 26. An absorbent pad comprising: a liquid-permeable upper layer, a liquid-permeable lower layer, and an absorbent layer disposed between said upper and lower layers, wherein said upper and lower layers extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said intermediate layer, such that said intermediate absorbent layer is confined within the bounds of said upper and said lower layers, said upper layer comprises a spunbonded/meltblown/spunbonded trilaminate construction selected from the group consisting of polyolefin, polyester, and polyamide thermoplastic fibers having hydrophilic composition coated thereon, and said lower layer comprises a nonwoven fibrous web having hydrophilic composition coated thereon, and wherein said lower layer has a greater amount of said hydrophilic composition coated thereon than said upper layer. 27. An absorbent pad according to claim 26, wherein said spunbonded/meltblown/spunbonded trilaminate is polypropylene. 28. An absorbent pad according to claim 26, wherein said lower layer is a spunbonded nonwoven. 29. An absorbent pad according to claim 26, wherein said lower layer hydrophilic composition is present on said lower layer in an amount from 0.5 to 1.0 percent based on the weight of said lower layer and said upper layer hydrophilic composition is present on said upper layer in an amount from 0.1 to 0.35 percent based on the weight of said upper layer. 30. An absorbent pad according to claim 26, wherein said upper and lower layer hydrophilic compositions are independently selected from the group consisting of alkylphenol ethoxylates, alkylphenyl polyethylene glycol ethers (including alkylaryl polyether alcohol, polyethylene glycol mono-(4-octylphenyl) ether, polyethylene glycol mono-(4-tert-octylphenyl) ether, POE octylphenol, ethoxylated octylphenol, octylphenol EO(X) where X stands for the average units of ethylene oxide), polyethylene glycol, alkylphenol, polypropylene glycol, polysorbates, fatty amine oxides, linear alcohol ethoxylates, alkanolamides, block copolymers of ethylene oxide and propylene oxide, and mixture thereof. 31. A case-ready package comprising: a support member; a lid member; a food product; and an absorbent pad comprising: a liquid-permeable upper layer in contact with a food product, and a liquid-permeable lower layer, and an intermediate absorbent layer wherein said upper layer and said lower layer extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said intermediate layer, such that said intermediate absorbent layer is confined within the bounds of said upper and said lower layer, and wherein said upper layer comprises a nonwoven fibrous web having a hydrophilic composition coated on said upper layer, and wherein the rate of liquid ingress through said upper layer is controlled by changing the amount of said hydrophilic composition coated on said upper layer, and said lower layer comprising a nonwoven fibrous web having a hydrophilic composition coated on said lower layer, wherein the amount of said hydrophilic composition on said lower layer is greater than the amount of said hydrophilic composition on said upper layer, such that said lower layer wicks said liquids at a rate that is greater than the rate at which said upper layer wicks said liquids. 32. The case-ready package according to claim 31, wherein said food product is selected from the group consisting of meat, cheese, poultry, and produce. 33. The case-ready package according to claim 31, wherein said food product is poultry. 34. The case-ready package according to claim 31, wherein said package has a modified atmosphere between said support member end said lid member. 35. The case-ready package according to claim 34, wherein the atmosphere has been substantially evacuated from within said case-ready package. 36. A case-ready package comprising: a support member; a lid member; a food product; and an absorbent pad comprising: a liquid-permeable upper layer in contact with a food product, and a liquid-permeable lower layer, and an intermediate absorbent layer wherein said upper layer and said lower layer extend outwardly beyond the periphery of said intermediate layer, and said upper layer and said lower layer are attached directly to one another around the entire perimeter of said, intermediate layer, such that said, intermediate absorbent layer is confined within the bounds of said upper and said lower layer, and wherein said upper layer comprises a nonwoven fibrous web having a hydrophilic composition coated on said upper layer, and wherein the rate of liquid ingress through said upper layer is controlled by changing the amount of said hydrophilic composition coated on said upper layer; and said lower layer comprising a nonwoven fibrous web having a hydrophilic composition coated on said lower layer, wherein the amount of said hydrophilic composition on said lower layer is greater than the amount of said hydrophilic composition on said upper layer, such that said lower layer wicks said liquids at a rate that is greater than the rate at which said upper layer wicks said liquids, and wherein said lower layer nonwoven is selected from the group consisting of polyolefin, polyester, polypropylene, and polyamide.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.