Packaging materials with enhanced thermal-insulating performance
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29D-022/00
B29D-023/00
B32B-001/08
B32B-027/10
출원번호
US-0080064
(2011-04-05)
등록번호
US-8541074
(2013-09-24)
발명자
/ 주소
Babinsky, Vladislav
Arenander, Sven Samuel
Newman, Dobridge Celeste
Babcock, Bruce W.
Hawes, David H.
출원인 / 주소
Meadwestvaco Corporation
대리인 / 주소
MeadWestvaco Intellectual Property Group
인용정보
피인용 횟수 :
0인용 특허 :
44
초록▼
A packaging material including a paper-based substrate having a first surface and a second surface and a thermal-insulating composition on the first surface of the substrate, wherein the thermal-insulating composition includes, based on the total weight of the composition, filler in an amount of 20%
A packaging material including a paper-based substrate having a first surface and a second surface and a thermal-insulating composition on the first surface of the substrate, wherein the thermal-insulating composition includes, based on the total weight of the composition, filler in an amount of 20% to 70% by weight, organic binder in an amount of 15% to 70% by weight, and plasticizer in an amount of 0.5% to 10% by weight.
대표청구항▼
1. A packaging material comprising: (A) a paper-based substrate including a first surface and a second surface; and(B) a thermal-insulating composition on the first surface of the substrate, wherein the thermal-insulating composition comprises, based on total weight of the composition: (a) filler in
1. A packaging material comprising: (A) a paper-based substrate including a first surface and a second surface; and(B) a thermal-insulating composition on the first surface of the substrate, wherein the thermal-insulating composition comprises, based on total weight of the composition: (a) filler in an amount of 10% to 70% by weight;(b) organic binder in an amount of 15% to 70% by weight; and(c) plasticizer. 2. The packaging material of claim 1, wherein the filler comprises, based on total weight of the filler: (i) inorganic filler in an amount of 0% to 90% by weight; and(ii) organic filler in an amount of 10% to 100% by weight. 3. The packaging material of claim 1, wherein the filler comprises, based on total weight of the filler: (i) inorganic filler in an amount of 40% to 90% by weight; and(ii) organic filler in an amount of 10% to 60% by weight. 4. The packaging material of claim 1, wherein the thermal-insulating composition is applied onto the substrate in a form of coalesced droplets, longitudinally-extending sinuous strands, or combinations thereof. 5. The packaging material of claim 1, wherein the thermal-insulating composition further comprises borax. 6. The packaging material of claim 1, wherein the thermal-insulating composition comprises sodium silicate in an amount of 1% to 15% by weight based on total weight of the composition. 7. The packaging material of claim 1, wherein the thermal-insulating composition comprises corn fibers as the filler in an amount of 0.5% to 1% by weight based on total weight of the composition. 8. The packaging material of claim 1, wherein the filler comprises insulating particles selected from the group consisting of ceramic air-containing particles, pearlite particles, and combinations thereof. 9. The packaging material of claim 1, wherein the organic binder includes a member selected from the group consisting of styrene-butadiene polymer, an acrylic-styrene butadiene polymer, starch, polyvinyl alcohol, polyvinyl acetate, and combinations thereof. 10. The packaging material of claim 1, wherein the plasticizer comprises 0.5% to 10% by weight of the composition. 11. The packaging material of claim 1, characterized by a thickness of the thermal-insulating composition in a range of 0.05 mm to 5 mm. 12. The packaging material of claim 1, wherein the thermal-insulating composition has a pseudoplasticity index in a range of 0.03 to 0.5. 13. The packaging material of claim 1, wherein the thermal-insulating composition has a low shear viscosity in a range of 2,000 to 50,000 cps, and a high shear viscosity in a range of 100 to 5,000 cps. 14. The packaging material of claim 1, characterized by a porosity of the paper-based substrate in a range 20 to 150 Gurley units. 15. The packaging material of claim 1, wherein the material is able to hold pressure in a range of 0.1 kgf/cm2 to 1.0 kgf/cm2. 16. A beverage cup including the packaging material of claim 1. 17. The packaging material of claim 1, wherein the filler comprises particles having an irregular shape. 18. The packaging material of claim 1 further comprising a paper-based top layer, the thermal-insulating composition being positioned between the first surface of the paper-based substrate and the paper-based top layer. 19. The packaging material of claim 18 further comprising a moisture barrier layer positioned on the paper-based top layer. 20. A beverage cup including the packaging material of claim 19. 21. The packaging material of claim 18 further comprising: a first moisture barrier layer positioned on the paper-based top layer, and a second moisture barrier layer positioned on the second surface of the paper-based substrate. 22. The packaging material of claim 18, characterized by a porosity of the paper-based top layer in a range 20 to 150 Gurley units. 23. The packaging material of claim 18, wherein the paper-based substrate and the top composition have a combined thickness associated therewith, and the thermal-insulating composition has a thickness associated therewith, and wherein the thickness of the thermal-insulating composition is in a range of 20-100% of the combined thickness of the paper-based substrate and the top layer. 24. The packaging material of claim 23, wherein the thermal-insulating composition provides space for separating the paper-based substrate and the top layer. 25. A beverage cup including the packaging material of claim 18. 26. The packaging material of claim 1, wherein the thermal-insulating composition comprises no more than 20% by weight of starch binder based on total weight of the thermal-insulating composition. 27. The packaging material of claim 26, wherein the starch binder comprises, based on total weight of the starch binder: (i) gelatinized starch in an amount of 10% to 50% by weight, and(ii) ungelatinized starch in an amount of 50% to 90% by weight. 28. The packaging material of claim 26, wherein the starch binder comprises, based on total weight of the starch binder: (i) gelatinized starch in an amount of 0% to 70% by weight, and(ii) ungelatinized starch in an amount of 30% to 100% by weight. 29. The packaging material of claim 26, wherein the starch binder comprises, based on total weight of the starch binder: (i) gelatinized starch in an amount of 50% to 100% by weight, and(ii) ungelatinized starch in an amount of 0% to 50% by weight. 30. The packaging material of claim 1, wherein the thermal-insulating composition comprises at least 20% by weight of starch binder based on total weight of the composition. 31. The packaging material of claim 30, wherein the starch binder comprises, based on total weight of the starch binder: (i) gelatinized starch in an amount of 10% to 50% by weight, and(ii) ungelatinized starch in an amount of 50% to 90% by weight. 32. The material of claim 1, wherein the thermal-insulating composition comprises ungelatinized starch and sodium silicate. 33. The packaging material of claim 32, wherein the thermal-insulating composition comprises, based on total weight of the composition: (i) ungelatinized starch in an amount of 5% to 32% by weight, and(ii) sodium silicate in an amount of 1% to 15% by weight. 34. The packaging material of claim 1, wherein the thermal-insulating composition comprises cellulosic solids as the filler in an amount of 2% to 50% by weight based on total weight of the composition. 35. The packaging material of claim 34, wherein a particle size of the cellulosic solids is more than 100 microns. 36. The packaging material of claim 34, wherein the cellulosic solids includes a member selected from the group consisting of cellulosic fibers, wood flour, wood dust, gluten feed, and combinations thereof. 37. The packaging material of claim 36, wherein the cellulosic fiber is characterized by a length of no greater than 2 mm and an aspect ratio of no greater than 25:1. 38. The packaging material of claim 1, wherein the thermal-insulating composition includes a void structure. 39. The packaging material of claim 38, wherein the void structure comprises air space between at least some of the filler, the organic binder, and the plasticizer. 40. A beverage cup including the packaging material of claim 38. 41. The packaging material of claim 1, wherein the thermal-insulating composition is positioned on the first surface in a random pattern. 42. A beverage cup including the packaging material of claim 41. 43. The packaging material of claim 1, wherein the thermal-insulating composition comprises a foam. 44. The packaging material of claim 43, wherein the foam is mechanically-induced. 45. The packaging material of claim 43, wherein the foam comprises a mechanically-whipped latex. 46. The packaging material of claim 43, wherein the foam comprise an emulsion polymer binder and a foam stabilizer. 47. A beverage cup including the packaging material of claim 43.
Andersen Per Just ; Ong Shaode ; Christensen Bruce J. ; Hodson Simon K., Compositions having a high ungelatinized starch content and sheets molded therefrom.
Andersen Per Just ; Hodson Simon K., Inorganically filled, starch-based compositions for manufacturing containers and other articles having a thermodynamica.
Andersen Per Just (Santa Barbara CA) Hodson Simon K. (Santa Barbara CA), Inorganically filled, starch-bound compositions for manufacturing containers and other articles having a thermodynamical.
Andersen Per Just ; Hodson Simon K., Laminated articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix.
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Fuller W. Craig (Circleville OH) Krug Teresa M. (Chillicothe OH) Cyrus ; Jr. William L. (Chillicothe OH) Lan Jyh-Yee (Dublin OH), Recyclable wax-coated containers.
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