[특허]Papermaking belt and method of making the same using differential light transmission techniques

Papermaking belt and method of making the same using differential light transmission techniques 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G03C-005/56
출원번호	US-0152639 (1993-12-20)
발명자 / 주소	Trokhan Paul D. (Hamilton OH) Boutilier Glenn D. (Blue Ash OH)
출원인 / 주소	The Procter & Gamble Company (Cincinnati OH 02)
인용정보	피인용 횟수 : 137 인용 특허 : 0

초록 ▼

A backside textured papermaking belt is disclosed which is comprised of a framework and a reinforcing structure. The framework has a first surface which defines the paper-contacting side of the belt, a second surface opposite the first surface, and conduits which extend between first and second surfaces of the belt. The first surface of the framework has a paper side network formed therein which defines the conduits. The second surface of the framework has a backside network with passageways that provide surface texture irregularities in the backside network. The papermaking belt is made by applying a coating of photosensitive resinous material to a reinforcing structure which has opaque portions, and then exposing the photosensitive resinous material to light of an activating wavelength through a mask which has transparent and opaque regions and also through the reinforcing structure. A process for making paper products is also disclosed which involves applying a fluid pressure differential from a vacuum source through the belt to a partially-formed embryonic web of papermaking fibers. The fibers in the embryonic web are deflected into the conduits of the papermaking belt by the vacuum pressure while the papermaking belt and the embryonic web travel over the vacuum source. Following the deflection, the paper web is impressed with the paper side network of the belt, and dried to form the final product.

대표청구항 ▼

A method of making a papermaking belt having a textured backside, said papermaking belt comprising a reinforcing structure and a framework comprised of a photosensitive resinous material, said framework having a first surface, a second surface, and conduits extending between said first surface and said second surface, opposite said first surface said first surface having a paper side network formed therein defining said conduits, said second surface having a backside network with passageways distinct from said conduits, that provide surface texture irregularities in said backside network, the method comprising the steps of: (a) providing a forming unit having a working surface; (b) providing a reinforcing structure having a paper-facing side, a machine-facing side opposite said paper-facing side, interstices and a reinforcing component comprised of a plurality of structural components, a first portion of said reinforcing component comprising an opaque coating and having a first opacity and a second portion of said reinforcing component having a second opacity less than said first opacity, said first opacity being sufficient to substantially prevent curing of said photosensitive resinous material when said photosensitive resinous material is in its uncured state and said first portion is positioned between said photosensitive resinous material and an actinic light source, and said second opacity being sufficient to permit curing of said photosensitive resinous material, said first portion defining a first projected area; (c) bringing at least a portion of said machine-facing side of said reinforcing structure into contact with said working surface of said forming unit; (d) applying a coating of liquid photosensitive resin to at least one side of said reinforcing structure so that said coating forms a first surface and a second surface, said coating being distributed so that at least a portion of said second surface of said coating is positioned adjacent said working surface of said forming unit, portions of said second surface of said coating are positioned between said first portion of said reinforcing component and said working surface of said forming unit, and said paper-facing side of said reinforcing structure is positioned between said first and second surfaces of said coating, wherein the portion of said coating positioned between said first surface of said coating and said paper-facing side of said reinforcing structure comprises a resinous overburden; (e) controlling the thickness of said overburden to a preselected value; (f) providing a mask having opaque and transparent regions, said opaque regions together with said transparent regions defining a preselected pattern in said mask; (g) positioning said mask between said coating of liquid photosensitive resin and an actinic light source so that said mask is in contacting relation with said first surface of said coating, said opaque regions of said mask shielding a portion of said coating from the light rays of said light source and said transparent regions leaving other portions of said coating unshielded; (h) curing said unshielded portions of liquid photosensitive resin coating and those portions of said coating that said second portion of said reinforcing structure permits the curing of, and leaving said shielded portions and those portions of said coating positioned between said first portion of said reinforcing structure and the working surface of said forming unit uncured by exposing said coating of liquid photosensitive resin to light having an activating wavelength from said light source through said mask and through said reinforcing structure to form a partially-formed composite belt; and (i) removing substantially all uncured liquid photosensitive resin from said partially-formed composite belt to leave a hardened resin framework which has a plurality of conduits in those regions which were shielded from said light rays by the opaque regions of the mask and passageways that provide surface texture irregularities in the backside network of said framework which correspond to those portions of the second surface of the coating which were prevented from curing by the first portion of the reinforcing structure.

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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

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
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Papermaking belt and method of making the same using differential light transmission techniques 원문보기

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