Oil, grease, and moisture resistant paperboard
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21H-019/82
D21H-019/40
D21H-019/38
D21H-019/58
D21H-023/72
D21H-023/34
D21H-023/32
D21H-023/50
D21H-023/48
D21H-023/56
D21H-019/44
D21H-019/60
D21H-021/16
출원번호
US-0017735
(2016-02-08)
등록번호
US-9771688
(2017-09-26)
발명자
/ 주소
Pang, Jiebin
Melton, Natasha Gandia
Giuste, Sergio A.
출원인 / 주소
WestRock MWV, LLC
대리인 / 주소
Westrock Intellectual Property Group
인용정보
피인용 횟수 :
2인용 특허 :
4
초록
A coated paperboard is disclosed which includes a base coat and top coat containing substantially no fluorochemical or wax, exhibiting good resistance to oil and grease, no tendency toward blocking, and being fully repulpable. Improved moisture resistance is also exhibited.
대표청구항▼
1. A coated paperboard, comprising: a paperboard substrate having a first side and a second side;a base coat in contact with the first side, the base coat comprising binder and pigment, the base coat containing substantially no fluorochemical or wax;a top coat in contact with the base coat, the top
1. A coated paperboard, comprising: a paperboard substrate having a first side and a second side;a base coat in contact with the first side, the base coat comprising binder and pigment, the base coat containing substantially no fluorochemical or wax;a top coat in contact with the base coat, the top coat comprising binder and pigment, the top coat containing substantially no fluorochemical or wax;wherein the coated paperboard has a 3M kit test value of at least 10; andwherein the coated paperboard is repulpable to the extent that after repulping the percentage accepts is at least 99%. 2. The coated paperboard of claim 1, wherein the 3M kit test value is 12. 3. The coated paperboard of claim 1, wherein the percentage accepts is at least 99.9%. 4. The coated paperboard of claim 1, wherein the base coat weight is 5 to 12 lbs per 3000 ft2. 5. The coated paperboard of claim 1, wherein the top coat weight is 2 to 9 lbs per 3000 ft2. 6. The coated paperboard of claim 1, having no tendency toward blocking after being held for 24 hours at 50° C. at a pressure of 100 psi. 7. The coated paperboard of claim 1, wherein the binder to pigment ratio in the base coat is between 25 to 40 parts binder per 100 parts pigment, by weight. 8. The coated paperboard of claim 1, wherein the binder to pigment ratio in the top coat is between 25 to 40 parts binder per 100 parts pigment, by weight. 9. The coated paperboard of claim 1, wherein the binder comprises at least one of styrene acrylate copolymer and styrene-butadiene copolymer. 10. The coated paperboard of claim 1, wherein the pigment comprises at least one of a clay and calcium carbonate. 11. The coated paperboard of claim 1, wherein the pigment comprises a No. 1 ultrafine kaolin clay. 12. The coated paperboard of claim 1, wherein the pigment comprises a high aspect ratio platy clay. 13. The coated paperboard of claim 1, wherein the pigment comprises at least one of a coarse ground calcium carbonate and a fine ground calcium carbonate. 14. The coated paperboard of claim 1, wherein the coated paperboard has a water vapor transmission rate of at most 425 grams per square meter per day at 38° C. and 90% relative humidity. 15. The coated paperboard of claim 1, wherein the coated paperboard has a two-minute Cobb test of at most 20 grams per square meter. 16. The coated paperboard of claim 1, wherein the binder comprises both styrene acrylate copolymer (SA) and styrene-butadiene copolymer (SBR). 17. The coated paperboard of claim 16, wherein the binder comprises at least 20% SA and at least 35% SBR. 18. A coated paperboard comprising: a paperboard substrate having a first side and a second side; a base coat in contact with the first side, the base coat having a coat weight from 5 to 12 lbs per 3000 ft2 and comprising binder and pigment , the base coat containing substantially no fluorochemical or wax;a top coat in contact with the base coat, the top coat having a coat weight from 2 to 9 lbs per 3000 ft2 and comprising binder and pigment, the top coat containing substantially no fluorochemical or wax;wherein the coated paperboard has a 3M Kit test value of at least 10, is at least 99% repulpable, and has no tendency toward blocking after being held for 24 hours at 50° C. at a pressure of 100 psi. 19. The coated paperboard of claim 18, wherein the base coat weight is 6 to 9 lbs per 3000 ft2. 20. The coated paperboard of claim 18, wherein the top coat weight is 3 to 6 lbs per 3000 ft2. 21. A method of treating paperboard, the method comprising: providing a paperboard substrate having a first side and a second side;applying to the first side a base coat comprising binder and pigment, and containing substantially no fluorochemical or wax;applying over the base coat a top coat comprising binder and pigment, the top coat containing substantially no fluorochemical or wax;wherein the resulting treated paperboard has a 3M kit test value of at least 10; andwherein the coated paperboard is repulpable to the extent that after repulping the percentage accepts is at least 99%. 22. The method of claim 21, wherein the base coat is applied by a device selected from the group consisting of a blade coater, curtain coater, air knife coater, rod coater, film coater, short-dwell coater, spray coater, and metering film size press. 23. The method of claim 21, wherein the top coat is applied by a device selected from the group consisting of a blade coater, curtain coater, air knife coater, rod coater, film coater, short-dwell coater, spray coater, and metering film size press.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (4)
Swoboda, Dean P.; Swiontek, Anthony J.; Hartjes, Timothy P.; Shanton, Kenneth J.; Sandstrom, Erland R., Coated paperboards and paperboard containers having improved tactile and bulk insulation properties.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.