[특허]Thermoplastic films with visually-distinct stretched regions and methods for making the same

Thermoplastic films with visually-distinct stretched regions and methods for making the same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-055/00 B29C-055/18 B29C-055/06 B29C-055/08 B65D-030/00 B65D-033/01 B29C-065/00 B65D-075/00 B29L-031/00
출원번호	US-0169393 (2016-05-31)
등록번호	US-10046508 (2018-08-14)
발명자 / 주소	Dorsey, Robert T. Borchardt, Michael G.
출원인 / 주소	The Glad Products Company
대리인 / 주소	Feix, Thomas C.
인용정보	피인용 횟수 : 0 인용 특허 : 47

초록 ▼

Thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create non-porous, white, and opaque stretched regions include incrementally stretching a film of a thermoplastic material and a voiding agent.

대표청구항 ▼

1. An incrementally-stretched thermoplastic film with visually-distinct stretched regions, comprising: a film layer of linear low-density polyethylene including a first plurality of un-stretched regions and a second plurality of stretched regions intermittently dispersed about the first plurality of un-stretched regions;wherein the stretched regions of the film layer of linear low-density polyethylene are: non-porous, andmore opaque than the un-stretched regions. 2. The incrementally-stretched thermoplastic film as recited in claim 1, wherein the film comprises between about 65 and about 99 percent by weight of a thermoplastic material, and between about 1 and about 35 percent by weight of a voiding agent. 3. The incrementally-stretched thermoplastic film as recited in claim 1, wherein a color of the stretched regions differs from a color of the un-stretched regions. 4. The incrementally-stretched thermoplastic film as recited in claim 2, wherein the voiding agent comprises calcium carbonate. 5. The incrementally-stretched thermoplastic film as recited in claim 2, wherein the voiding agent comprises between about 1 and about 15 percent by weight of the film. 6. The incrementally-stretched thermoplastic film as recited in claim 1, wherein an average thickness of the stretched regions is less than an average thickness of the un-stretched regions. 7. The incrementally-stretched thermoplastic film as recited in claim 1, wherein the stretched regions comprise one or more of: stripes extending along the film in a direction transverse to a direction in which the film was extruded;stripes extending along the film in a direction in which the film was extruded; ordiscontinuous strainable networks extending in a direction transverse to a direction in which the film was extruded. 8. The incrementally-stretched thermoplastic film as recited in claim 7, wherein the stretched regions comprise: stripes extending along the film in the direction in which the film was extruded; andstripes extending along the film in the direction transverse to the direction in which the film was extruded. 9. The incrementally-stretched thermoplastic film as recited in claim 1, wherein the stretched regions comprise discontinuous strainable networks arranged in diamond patterns. 10. The incrementally-stretched thermoplastic film as recited in claim 7, further comprising: a first section, the first plurality of stretched regions being located entirely in the first section; anda second un-stretched section. 11. An incrementally-stretched thermoplastic film with visually-distinct stretched regions, comprising: a thermoplastic film that comprises linear low-density polyethylene and a voiding agent;a plurality of un-stretched regions formed in the thermoplastic film, the un-stretched regions having a first average thickness; anda plurality of stretched regions intermittently dispersed about the un-stretched regions, the stretched regions having a second average thickness that is smaller than the first average thickness;wherein the stretched regions are non-porous and more opaque than the un-stretched regions. 12. The incrementally-stretched thermoplastic film as recited in claim 11, wherein the thermoplastic film comprises between about 65 and about 99 percent by weight linear low-density polyethylene, and between about 1 and about 35 percent by weight of the voiding agent. 13. The incrementally-stretched thermoplastic film as recited in claim 12, wherein the voiding agent comprises between about 1 and about 15 percent by weight of the thermoplastic film. 14. The incrementally-stretched thermoplastic film as recited in claim 13, wherein the voiding agent comprises calcium carbonate. 15. The incrementally-stretched thermoplastic film as recited in claim 11, wherein a color of the stretched regions differs from a color of the un-stretched regions. 16. The incrementally-stretched thermoplastic film as recited in claim 11, wherein the stretched regions comprise one or more of: stripes extending along the film in a direction transverse to a direction in which the film was extruded;stripes extending along the film in a direction in which the film was extruded; ordiscontinuous strainable networks extending in a direction transverse to a direction in which the film was extruded. 17. The incrementally-stretched thermoplastic film as recited in claim 16, wherein the stretched regions comprise: stripes extending along the film in the direction in which the film was extruded; andstripes extending along the film in the direction transverse to the direction in which the film was extruded. 18. The incrementally-stretched thermoplastic film as recited in claim 11, wherein the stretched regions comprise discontinuous strainable networks arranged in diamond patterns. 19. The incrementally-stretched thermoplastic film as recited in claim 11, further comprising: a first section, the first plurality of stretched regions being located entirely in the first section; anda second un-stretched section. 20. The incrementally-stretched thermoplastic film as recited in claim 11, wherein the stretched regions are white and the un-stretched regions are translucent.

이 특허에 인용된 특허 (47)

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Hamilton Peter Worthington ; Otten Geneva Gail, Flexible bag with selectively-activatible support-engagement feature.
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Beverly J. Jackson, Flexible bags having enhanced capacity and enhanced stability in use.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Thermoplastic films with visually-distinct stretched regions and methods for making the same 원문보기

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Thermoplastic films with visually-distinct stretched regions and methods for making the same 원문보기

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