Ribbed film structures with voiding agent created visual characteristics
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-003/28
B32B-003/30
B32B-001/02
B29C-047/04
B29C-055/18
B65D-030/00
B65D-033/01
B32B-027/20
B32B-027/32
B29C-055/06
B29C-055/08
출원번호
US-0838577
(2013-03-15)
등록번호
US-9566760
(2017-02-14)
발명자
/ 주소
Borchardt, Michael G.
Fish, Theodore J.
Cisek, Kenneth E.
Dorsey, Robert T.
출원인 / 주소
The Glad Products Company
대리인 / 주소
Feix, Thomas C.
인용정보
피인용 횟수 :
0인용 특허 :
41
초록
In one example embodiment, a film includes a coextruded structure having both an extruded ribbed skin layer that includes a plurality of ribs, and a core layer. The ribs are spaced apart by a web that is integral with the ribs. The film also includes a voiding agent in the ribs of the skin layer.
대표청구항▼
1. A film, comprising: a coextruded film comprising a skin layer and a core layer; anda plurality of extruded ribs, where consecutive extruded ribs are spaced apart from each other by thinner portions that are integral with the consecutive extruded ribs; andwherein: the skin layer includes a voiding
1. A film, comprising: a coextruded film comprising a skin layer and a core layer; anda plurality of extruded ribs, where consecutive extruded ribs are spaced apart from each other by thinner portions that are integral with the consecutive extruded ribs; andwherein: the skin layer includes a voiding agent;the core layer is devoid of the voiding agent; andthe extruded ribs have a different color than the thinner portions. 2. The film as recited in claim 1, wherein the voiding agent is apparent substantially only in the ribs of the skin layer. 3. The film as recited in claim 1, wherein the voiding agent is one of substantially opaque; translucent; or transparent. 4. The film as recited in claim 3, wherein the film further comprises a coloring agent in the core layer. 5. The film as recited in claim 4, wherein the coloring agent is a different color than the voiding agent. 6. The film as recited in claim 1, wherein there is a visible contrast between the extruded ribs and the thinner portions, and the visible contrast is at least one of: a contrast in color; or a contrast in intensity of color. 7. The film as recited in claim 1, wherein the voiding agent comprises, in any combination, one or more of: calcium carbonate; magnesium carbonate; barium carbonate; calcium sulfate; magnesium sulfate; barium sulfate; calcium oxide; magnesium oxide; titanium oxide; zinc oxide; aluminum hydroxide; magnesium hydroxide; talc; clay; silica, alumina; mica; glass powder; or starch. 8. The film as recited in claim 1, wherein the skin layer includes indicia perceptible by one or more senses of a user, and wherein the indicia are one of: substantially cosmetic in nature; orindicative of a physical property of the film. 9. The film as recited in claim 8, wherein the indicia comprise one or more of: corrugations; extruded ribs and thinner portions of contrasting respective colors; substantially white extruded ribs; substantially black extruded ribs; discontinuities in the extruded ribs that have the same color as the extruded ribs; discontinuities in the extruded ribs that have a different color than the extruded ribs; or haziness in the thinner portions. 10. The film as recited in claim 1, wherein the skin layer includes indicia perceptible by one or more senses of a user, and wherein the indicia are indicative of post-extrusion processing of the film, and the post-extrusion processing comprises one or more of MD stretching, MD ring rolling, TD stretching, or TD ring rolling. 11. The film as recited in claim 10, wherein the indicia comprise one or more of: corrugations; extruded ribs and thinner portions of contrasting respective colors; substantially white extruded ribs; substantially black extruded ribs; discontinuities in the extruded ribs that have the same color as the extruded ribs; discontinuities in the extruded ribs that have a different color than the extruded ribs; or haziness in the thinner portions. 12. A thermoplastic product at least partly constructed from the film of claim 1, wherein the thermoplastic product comprises one of a grocery bag, a trash bag, a sack, a yard waste bag, packaging materials, a feminine hygiene product, a baby diaper, and adult incontinence product, a sanitary napkin, a bandage, a food storage bag, a food storage container, a thermal heat wrap, a facial mask, a cleaning wipe, or a hard surface cleaner. 13. The film as recited in claim 1, further comprising a plurality of intermittent compressions extending long each of the extruded ribs. 14. The film as recited in claim 13, wherein the intermittent compressions differ in color from portions of the extruded ribs that are not compressed. 15. The film as recited in claim 14, wherein intersections of the compressions and the extruded ribs provide the extruded ribs with a stitched appearance. 16. A film, comprising: a coextruded film comprising a skin layer and a core layer, wherein the skin layer includes a voiding agent and the core layer is devoid of the voiding agent; anda plurality of extruded ribs extending across the film in a first direction, where consecutive extruded ribs are spaced apart from each other by thinner portions that are integral with the consecutive extruded ribs; anda plurality of compressions extending across the film in a second direction that is perpendicular to the first direction, the plurality of compressions intersecting with the plurality of extruded ribs;wherein intersections of compressions of the plurality of compressions and the extruded ribs provide the extruded ribs with a stitched appearance. 17. The film of claim 16, wherein: portions of the extruded ribs that intersect with the compressions of the plurality of compressions have a first color; andportions of the extruded ribs that do not intersect with the compressions of the plurality of compressions have a second color differing from the first color. 18. The film of claim 17, wherein the thinner portions have a third color that differs from the first color and the second color.
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