Compostable paperboard with oil, grease, and moisture resistance
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21H-027/10
D21H-019/38
D21H-021/14
D21H-023/48
D21H-023/50
D21H-023/56
D21H-023/72
D21H-019/40
D21H-019/44
D21H-019/58
D21H-019/60
D21H-019/82
D21H-021/16
D21H-023/32
D21H-023/34
출원번호
US-0230896
(2016-08-08)
등록번호
US-9670621
(2017-06-06)
발명자
/ 주소
Pang, Jiebin
Melton, Natasha G.
출원인 / 주소
WestRock MWV, LLC
대리인 / 주소
WestRock Intellectual Property Group
인용정보
피인용 횟수 :
2인용 특허 :
7
초록
A coated paperboard is disclosed which includes a coating containing substantially no fluorochemical or wax, exhibiting good resistance to oil and grease, no tendency toward blocking, the coated paperboard being fully repulpable as well as compostable.
대표청구항▼
1. A coated paperboard, comprising: a paperboard substrate;a coating in contact with the paperboard substrate, the coating comprising binder and pigment, the coating containing substantially no fluorochemical or wax;wherein the coated paperboard has a caliper of at least 0.010″;wherein the coated pa
1. A coated paperboard, comprising: a paperboard substrate;a coating in contact with the paperboard substrate, the coating comprising binder and pigment, the coating containing substantially no fluorochemical or wax;wherein the coated paperboard has a caliper of at least 0.010″;wherein the coated paperboard provides barrier properties to at least one of oil, grease, and moisture; andwherein the coated paperboard is compostable according to the ASTM D6868-11 standard for compostability. 2. The coated paperboard of claim 1, wherein the coated paperboard has a caliper of at least 0.012″. 3. The coated paperboard of claim 1, wherein the binder to pigment ratio in the coating is between 25 to 40 parts binder per 100 parts pigment, by weight. 4. The coated paperboard of claim 3, wherein the binder to pigment ratio in the coating is between 30 to 35 parts binder per 100 parts pigment, by weight. 5. The coated paperboard of claim 1, wherein the binder comprises a synthetic polymer including (i) a non-biodegradable component and (ii) a natural biodegradable component. 6. The coated paperboard of claim 5, wherein the binder further comprises (iii) an additional natural biodegradable component. 7. The coated paperboard of claim 6, wherein the additional biodegradable component (iii) is at least one of polysaccharide and protein. 8. The coated paperboard of claim 6, wherein the additional biodegradable component (iii) comprises between 1 to 7 parts starch per 100 parts pigment, by weight. 9. The coated paperboard of claim 1, wherein the 3M kit test value is at least 3. 10. The coated paperboard of claim 1, wherein the coated paperboard has a 30-minute oil Cobb test of at most 20 grams per square meter. 11. The coated paperboard of claim 1, wherein the coated paperboard is repulpable to the extent that after repulping the percentage accepts is at least 99%. 12. The coated paperboard of claim 11, wherein the percentage accepts is at least 99.9%. 13. The coated paperboard of claim 1, wherein the coating weight is 5 to 12 lbs per 3000 ft2. 14. The coated paperboard of claim 13, wherein the coating is applied in two passes for a total coat weight of 5 to 12 lbs per 3000 ft2. 15. 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. 16. The coated paperboard of claim 1, wherein the pigment comprises at least one of a clay and calcium carbonate. 17. A method of treating paperboard, the method comprising: providing a paperboard substrate;applying to the paperboard substrate a coating comprising binder and pigment, and containing substantially no fluorochemical or wax;wherein the binder comprises starch;wherein the coated paperboard has a caliper of at least 0.010″;wherein the coated paperboard is compostable according to the ASTM D6868-11 standard for compostability;wherein the coated paperboard has a 3M kit test value of at least 3; andwherein the coated paperboard is repulpable to the extent that after repulping the percentage accepts is at least 99%. 18. The method of claim 17, wherein the coated paperboard has a caliper of at least 0.012″. 19. The method of claim 17, wherein the binder to pigment ratio in the coating is between 25 to 40 parts binder per 100 parts pigment, by weight. 20. The method of claim 17, wherein the coating 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.
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.