[특허]Method and apparatus for making a corrugated fiberboard honeycomb structure

Method and apparatus for making a corrugated fiberboard honeycomb structure 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-031/18
출원번호	US-0264023 (1988-10-28)
발명자 / 주소	Hees Ronald D. (1757 Lakewood Dr. Rt. 7 Gaylord MI 49735)
인용정보	피인용 횟수 : 45 인용 특허 : 0

초록 ▼

An improved method and apparatus for forming cellular core structures from corrugated fibreboard utilizing flat sheets of single wall corrugated board of rectangular configuration. The sheets are fed end one at a time in the direction of the board flutes into a rotary die cutting station to form a parallel array of evenly spaced die cut lines extending perpendicular to the flute-feed direction from one side edge to the other side edge of each sheet. Each die cut line is defined by an alternating series of very long die cuts and very short die cuts individually spaced from one another along the die cut line by very short uncut sheet material connecting portions to thereby form a plurality of strips of sheet material intermittently integrally joined by the uncut sheet material connecting portions. An array of crease lines extend parallel to the flute-feed direction and are arranged in pairs of spaced apart in the direction of the die cut lines and closely flanking each of the uncut connecting portions. Individual glue spots are applied to the outer surface of at least one of the top and bottom facings of each board sheet between selected pairs of crease lines which are to be juxtaposed to a portion of the outer surface of the facing opposite the one facing of a juxtaposed strip having no glue spot applied thereto. The sheets are then formed into honeycomb-formable strips of the sheet material by juxtaposing the face of one strip having glue spots thereon to the face of another strip having no glue spots thereon, with the glue spots of the first and second strips alternating lengthwise of the strip.

대표청구항 ▼

A method of forming cellular core structures from corrugated fibreboard comprising the steps of: (1) providing a starting material in the form of a plurality of flat sheets of single wall corrugated board of rectangular configuration in plan view each having identical predetermined length and width dimensions, said board having top and bottom flat facings and one corrugated inner member disposed between and glued to the inner surfaces of said flat facings the flutes of said inner member extending parallel to one of said dimensions; (2) feeding said sheets endwise one at a time in the direction of the longitudinal dimension of said flutes into a die cutting station; (3) die cutting and crease-lining of said sheets seriatim in said die cutting station to impart to each said sheet (a) a parallel array of evenly spaced direct lines extending perpendicular to said flute-feed direction from side edge to the other side edge of each sheet, each said die cut line being defined by an alternating series of very long die cuts and very short die cuts individually spaced from one another along said die cut line by very short uncut sheet material connecting portions to thereby form a plurality of strips of said sheet material intermittently integrally joined by said uncut sheet material connecting portions, the dimension of each strip in the direction of sheet feed being only slightly greater than the desired final thickness dimension of the honeycomb cellular core structure to be made from the die cut sheet, and (b) an array of crease lines extending parallel to said flute-feed direction and arranged in pairs spaced apart in the direction of said die cut lines and closely flanking each of said uncut connecting portions, (4) then feeding each as so die cut and crease-lined endwise in the direction of longitudinal dimension of the flutes therein, into a gluing station and thereon individual glue spots in a predetermined pattern to outer surface of at least one of said top and bottom facings between selected pairs of crease lines which are to be juxtaposed to a of the outer surface of the facing opposite said one facing of a juxtaposed strip having no glue spot applied thereto, and (5) then forming from said die cut, crease-lined and glue-spotted sheets a plurality of stacks of adhesively bonded honeycomb-formable strips of said sheet material by juxtaposing the face of one strip having glue spots thereon to the face of another strip having no glue spots thereon with the glue spots of the second strip alternating lengthwise of the strip with the glue spots of the first strip.

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Method and apparatus for making a corrugated fiberboard honeycomb structure 원문보기

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