US3785483A - Stable fiber package comprising overlying wraps of a fibrous tape - Google Patents
Stable fiber package comprising overlying wraps of a fibrous tape Download PDFInfo
- Publication number
- US3785483A US3785483A US00261462A US3785483DA US3785483A US 3785483 A US3785483 A US 3785483A US 00261462 A US00261462 A US 00261462A US 3785483D A US3785483D A US 3785483DA US 3785483 A US3785483 A US 3785483A
- Authority
- US
- United States
- Prior art keywords
- tape
- package
- interlay
- accordance
- fiber package
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
- B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
- B65D85/672—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
Definitions
- An improved fiber package wherein a dry fibrous tape is wound upon a rigid support and each overlying wrap is separated from the previous wrap by an interlay.
- the interlay employed in the formation of the improved fiber package possesses a stiff backing and a resilient contact surface which engages the fibrous tape having a corrugated configuration consisting of a plurality of parallel ridges substantially coextensive with the length of the interlay.
- the fibrous tape preferably is composed of a carbonaceous fibrous material (e.g. a graphitic carbon fibrous material).
- the fiber package possesses enchanced stability, and is resistant to telescoping. The fibrous tape may be conveniently stored within and unreeled from the package in the absence of fiber damage.
- fiber reinforced composite structures have achieved increasing acceptance. More specifically, polymer fibers as well as numerous inorganic fibrous materials, such as glass fibers, carbon fibers, boron fibers, silicon carbide fibers, aluminum silicate fibers, metallic fibers (e.g. stainless steel fibers), etc., have been incorporated in various matrix materials to provide reinforcement, and to produce composite articles.
- the matrix material has commonly been a thermoplastic or a thermosetting resinous material. Also, in some instances, metals have served as the matrix material.
- a continuous length of an interlay is provided having a stiff backing and a resilient tape contact surface adjacent one side of the stiff backing having a corrugated configuration comprising a plurality of parallel ridges substantially coextensive with the length ofthe interlay, with the stiff backing being capable of preventing substantial transverse deformation of the interlay within the package and the resilient corrugated tape contact surface being capable of substantially non-deleterious engagement with the tape to form a package of increased stability.
- the package of the present invention is particularly suited for handling tapes of dry carbonaceous fibers (e.g. graphitic carbon fibers).
- FIG. 1 is a perspective view of a fiber package in accordance with the present invention wherein a graphitic carbon tape is being wound in a plurality of overlying wraps upon a flanged bobbin.
- FIG. 2 is a fragmentary perspective view greatly enlarged of a preferred interlay for use in forming a fiber package in accordance with the present invention wherein the backing thereof is Kraft paper and the resilient corrugated tape contact surface thereof is tissue paper.
- FIG. 3 is a fragmentary perspective view greatly enlarged of a preferred interlay for use in forming a fiber package in accordance with the present invention wherein the backing thereof is Kraft paper and the resilient corrugated tape contact surface thereof is polyurethane foam.
- FIG. 4 is a fragmentary perspective view greatly enlarged of the interlay of FIG. 2 showing a tape comprising a plurality of substantially parallel continuous multifilament yarn bundles of a carbonaceous fibrous material disposed thereon.
- the nature of the rigid support upon which the dry tape of a fibrous material is wound to form the fiber package of the present invention may be varied widely.
- Illustrative examples of preferred supports are bobbins, reels, spools, etc.
- the rigid support is a flanged bobbin or reel which is provided with a central opening capable of receiving an expandable chuck positioned upon the terminus of a variably controlled rotating shaft.
- the flanges of such a bobbin may be either permanently fixed or removable. For instance, frictionally engaging transparent flanges may be provided upon the bobbin while the tape is being wound upon the package which are subsequently replaced by conventional flanges once the package is formed.
- the tape and interlay may be initially secured to the rigid support (e.g. to its transverse axis) by any convenient technique, such as by use of an adhesive tape, glue, etc., or by an integral clamp provided upon the support.
- the dry tape of fibrous material which is provided within the package of the present invention is in the form of a ribbon having an appreciable length, a substantially uniform width, and a substantially uniform thickness.
- the term dry tape is used herein to define a tape which has not previously undergone resin impregnation (i.e. preimpregnation) wherein a substantial portion ofa resin which is to ultimately serve as the matrix of a composite article is adhering thereto. Accordingly, the surfaces of the tape are non-tacky when wound in the package.
- the tapes may, however, optionally be coated with a solid dry non-tacky coating (e.g., a dry resin coating) designed to serve as a finish, size, surface modifier, etc.
- the width and thickness of the tape are not critical provided the tape is flexible and may be wound in overlying wraps upon a support. Tape widths commonly range from about 0.5 to 8 inches, or more, and tape thicknesses commonly range from about .003 to 0.10 inch. The length of the tape is largely governed by the capacity of the rigid support upon which the tape is wound.
- the fibrous tapes may be composed of organic or inorganic fibrous materials and may be formed by conventional techniques which will be apparent to those skilled in the art.
- the tapes are commonly formed from fibrous materials utilized in the formation of fiber rein-' forced composites.
- the fibrous material may be a carbonaceous fibrous material which contains at least about 90 per cent carbon by weight (preferably at least about 95 per cent carbon by weight).
- carbonaceous fibrous materials may be formed from either amorphous carbon or graphitic carbon.
- the particularly preferred inorganic fibrous material is a carbonaceous fibrous material which contains at least about 95 per cent carbon by weight and exhibits a predominantly graphitic X-ray diffraction diffraction pattern.
- representative inorganic fibrous tapes are those formed from glass fiber, boron carbide fiber, silicon carbide fiber, aluminum silicate fiber, and metallic fiber (e.g. stainless steel fiber).
- Representative organic fibrous tapes include those formed from acrylic polymers, polyolefins, polyesters, polyamides, cellulosics, etc.
- the fibrous tapes comprise a plurality of adjoining substantially parallel multifilament yarn bundles substantially coextensive with the length of the tape. Such bundles may optionally possess a twist to improve their handling characteristics, e.g. a twist of about 0.1 to 5 tpi (turns per inch). If desired, a transverse weft pick may be interlaced with the yarn bundles to produce a woven tape of enhanced lateral integrity.
- Preferred tapes are disclosed in commonly assigned U. S. Ser. No. 112,189 filed Feb. 3, 1971, of Kenneth S. Burns, George R. Ferment. and Roger C. Waugh entitled Improved Process for the Production of Carbonaceous Tapes which is herein incorporated by reference.
- the tapes may consist simply of substantially parallel contiguous fiber bundles in ribbon form which include no transverse interlacement.
- the tapes may be provided as a multifilament flat tow, or in other woven or non-woven fibrous assemblages.
- the continuous length of an interlay employed in the package of the invention possesses a stiff backing and a resilient tape contact surface secured to one side of the stiff backing having a corrugated configuration comprising a plurality of parallel ridges substantially coextensive with the length of the interlay. Situated between each pair of adjoining resilient ridges is an elongated groove or valley substantially coextensive with the length of the interlay.
- the stiff backing is capable of preventing substantial transverse deformation of the interlay within the package, and the resilient corrugated tape contact surface is capable of a substantially non-deleterious cushioning engagement with the tape to form a package of increased stability which is resistant to telescoping.
- the interlay substantially resists transverse deformation or deflection within the package, differential tensions along the length of the tape and across the tape are effectively avoided which result if a portion of the tape is allowed to settle to a non-uniform degree into the interior of the package.
- the maintenance of uniform tension within a tape package is of prime importance if the tape is to ultimately serve as an organic polymeric fibrous precursor tape which is converted to a carbonaceous fibrous material in a thermal conversion process wherein tension is controlled.
- uniform tension within the tape influences the quality of the ultimate product.
- the interlay is at least as wide as the fibrous tape, and the interlay is preferably provided in a slightly wider width than the tape, e.g. the intelay is 0.1 to 0.5 inch, or more, wider than the tape.
- the backing of the interlay comprises at least one sheet of a relatively stiff stock material which possesses sufficient longitudinal flexibility to undergo smooth winding upon the rigid support.
- the backing may be conveniently formed from stiff paper; plastic sheeting such as cellulose acetate, polyethylene, etc; or metal sheeting such as aluminum foil, etc.
- a particularly preferred backing is Kraft paper of about 20 to weight.
- the thickness of the backing is influenced by the relative stiffness of the material selected. Commonly interlay backings are selected having a thickness of about 0.001 to 0.004 inch.
- the corrugated resilient tape contact surface of the interlay may be formed from a variety of materials.
- I]- lustrative contact surfaces include soft resilient paper, and soft resilient resinous materials.
- An example of a soft resilient paper is tissue paper.
- An example of a soft resinous material is a resilient solid foam, such as a polyurethane foam, and the like.
- the lateral width of each resilient ridge present in the contact surface is commonly about 0.1 to 0.5 inch.
- the maximum thickness of the soft corrugated contact surface can be varied, and commonly the contact surface has a thickness of about 0.002 to 0.08 inch at each ridge, and a thickness at the groove area of about one fifth to three fifths of that of the adjacent ridge area.
- each groove present in the contact surface is commonly about one fifth to four fifths of that of each ridge present in the contact surface.
- the soft resilient nature of the corrugated contact surface eliminates sliding or telescoping of a tape which is wound in a package adjacent the interlay.
- the corrugated resilient contact surface of the interlay is integrally bonded to one surface of the backing which simplifies handling during package formation.
- the corrugated resilient contact surface may be caused to adhere to one side of the backing by means of an adhesive, or through the use of heat bonding when the resilient contact surface is a resinous material.
- embossing techniques may be utilized to form an integral interlay having the desired resilient alternating ridge and groove configuration.
- a fiber package 1 in accordance with the present invention is shown during its formation.
- a flanged bobbin serves as the rigid support.
- the bobin flanges 2 and 4 have a diameter of 12 inches, and are positioned upon a transverse axis 6 having a diameter of 6 inches.
- the flanges 2 and 4 are spaced 3.5 inches apart.
- a central opening 8 is provided within the center of transverse axis 6 and is engaged by a rotating expandable chuck (not shown).
- the interlay has a width of 3.5 inches and consists of resilient corrugated tape contact surface 14 and stiff backing 16, and is discussed below in connection with FIG. 2.
- the dry fibrous tape 12 has a width of 3 inches and consists of 300 substantially parallel multifilament carbonaceous yarn bundles each having a twist of 0.5 tpi. Each bundle consists of about 400 continuous filaments having a denier per filament of about 0.7.
- the tape consists of in excess of 99 per cent carbon by weight and exhibits a predominantly graphitic X-ray diffraction pattern. As the interlay l0 and tape 12 are wrapped upon the support in overlying the superimposed wraps a stable package is formed in the absence of fiber damage.
- the interlay consists of a stiff backing 20 of 30 weight Kraft paper having a thickness about 0.002 inch, and a resilient contact surface 22 bonded thereto consisting of corrugated tissue paper having a maximum ridge thickness 24 of about 0.02 inch and a minimum groove thickness 26 of about 0.008 inch.
- the interlay consists of a stiff backing 30 of 30 weight Kraft paper, having a thickness of about 0.002 inch and a resilient corrugated contact surface of polyurethane foam 32 having a maximum ridge thickness 34 of about 0.02 inch and a minimum groove thickness 36 of about 0.008 inch.
- the corrugated foam contact surface is caused to adhere to the inner core 30 by means of flame lamination.
- FIG. 4 is a perspective view of the interlay of FIG. 2 showing a tape comprising a plurality of substantially parallel continuous multifilament yarn bundles 12 of a carbonaceous fibrous material disposed thereon.
- a fiber package comprising (a) a rigid support means, (b) a continuous length of a dry tape of a fbrous material wound in a plurality of overlying wraps about said support means, and (c) a continuous length of an interlay provided in a contiguous arrangement to said tape capable of eliminating contact between adjacent overlying wraps of said tape; the improvement of providing in said package a continuous length of an interlay having a stiff backing and a resilient tape contact surface provided adjacent one side of said stiff backing having a preformed corrugated configuration comprising a plurality of parallel ridges substantially coextensive with the length of said interlay, with said stiff backing being capable of preventing substantial transverse deformation of said interlay within said package and said resilient corrugated tape contact surface being capable of substantially non-deleterious engagement with said tape to form a package of increased stability.
- a fiber package in accordance with claim 1 wherein said continuous length of dry tape b comprises a plurality of substantially parallel continuous multifilament yarn bundles substantially coextensive with the length of said tape.
- said interlay c comprises a backing of stiff paper and a resilient corrugated tape contact surface of tissue paper.
- a fiber package comprising a a rigid support means, b a continuous length of a dry tape comprising a plurality of substantially parallel continuous multifilament yarn bundles of a carbonaceous fibrous material which contains at least about 90 per cent carbon by weight substantially coextensive with the length of said tape wound in a plurality of overlying wraps about said support means, and c a continuous length of an interlay provided in a contiguous arrangement to said tape capable of eliminating contact between adjacent overlying wraps of said tape; the improvement of providing in said package a continuous length on an interlay having a stiff backing a resilient tape contact surface provided adjacent one side of said stiff backing having a preformed corrugated configuration comprising a plurality of parallel ridges substantially coextensive with the length of said interlay, with said stiff backing being capable of preventing substantial transverse deformation of said interlay within said package and said resilient corrugated tape contact surface being capable of substantially non-deleterious engagement with said tape to form a package of increased stability.
Abstract
Description
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26146272A | 1972-06-09 | 1972-06-09 |
Publications (1)
Publication Number | Publication Date |
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US3785483A true US3785483A (en) | 1974-01-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00261462A Expired - Lifetime US3785483A (en) | 1972-06-09 | 1972-06-09 | Stable fiber package comprising overlying wraps of a fibrous tape |
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US (1) | US3785483A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997017149A1 (en) * | 1995-11-07 | 1997-05-15 | Lydall, Inc. | Method of wrapping cryogenic insulation around an inner cryogenic tank |
US6543711B2 (en) * | 2000-04-10 | 2003-04-08 | Nitto Denko Corporation | Damper continuous feeding body |
US20040013162A1 (en) * | 1996-02-06 | 2004-01-22 | Braun Aktiengesellschaft | Protective cap for infrared radiation thermoeter |
US20110233320A1 (en) * | 2008-11-25 | 2011-09-29 | Jx Nippon Mining & Metals Corporation | Method of winding up copper foil or copper clad laminate |
CN108001873A (en) * | 2017-12-26 | 2018-05-08 | 无锡龙凯包装有限公司 | A kind of carton gasket with functions/drying |
USD963862S1 (en) | 2021-07-06 | 2022-09-13 | Dr. Howard S. Glazer Consulting Llc | Strip of barrier envelopes |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1781797A (en) * | 1927-03-22 | 1930-11-18 | Harrison R Williams | Process of making packing material and product |
US3390762A (en) * | 1966-06-03 | 1968-07-02 | Canadian Ind | Method of winding thermoplastic resin sheeting into rolls and rolls obtained thereby |
US3732974A (en) * | 1971-03-15 | 1973-05-15 | Celanese Corp | Fiber package comprising overlying wraps of a fibrous tape |
-
1972
- 1972-06-09 US US00261462A patent/US3785483A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1781797A (en) * | 1927-03-22 | 1930-11-18 | Harrison R Williams | Process of making packing material and product |
US3390762A (en) * | 1966-06-03 | 1968-07-02 | Canadian Ind | Method of winding thermoplastic resin sheeting into rolls and rolls obtained thereby |
US3732974A (en) * | 1971-03-15 | 1973-05-15 | Celanese Corp | Fiber package comprising overlying wraps of a fibrous tape |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997017149A1 (en) * | 1995-11-07 | 1997-05-15 | Lydall, Inc. | Method of wrapping cryogenic insulation around an inner cryogenic tank |
US5749537A (en) * | 1995-11-07 | 1998-05-12 | Lydall, Inc. | Method of wrapping cryogenic insulation around an inner cryogenic tank |
US20040013162A1 (en) * | 1996-02-06 | 2004-01-22 | Braun Aktiengesellschaft | Protective cap for infrared radiation thermoeter |
US7121720B2 (en) * | 1996-02-06 | 2006-10-17 | Braun Gmbh | Protective cap for infrared radiation thermometer |
US6543711B2 (en) * | 2000-04-10 | 2003-04-08 | Nitto Denko Corporation | Damper continuous feeding body |
US20110233320A1 (en) * | 2008-11-25 | 2011-09-29 | Jx Nippon Mining & Metals Corporation | Method of winding up copper foil or copper clad laminate |
CN108001873A (en) * | 2017-12-26 | 2018-05-08 | 无锡龙凯包装有限公司 | A kind of carton gasket with functions/drying |
USD963862S1 (en) | 2021-07-06 | 2022-09-13 | Dr. Howard S. Glazer Consulting Llc | Strip of barrier envelopes |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CCF, INC., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CELANESE CORPORATION;REEL/FRAME:004413/0650 Effective date: 19850510 |
|
AS | Assignment |
Owner name: BASF STRUCTURAL MATERIALS, INC., 1501 STEELE CREEK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INMONT CORPORATION, A CORP. OF DE.;REEL/FRAME:004540/0948 Effective date: 19851231 |
|
AS | Assignment |
Owner name: INMONT CORPORATION Free format text: MERGER;ASSIGNORS:NARMCO MATERIALS, INC.;QUANTUM, INCORPORATED;CCF, INC.;REEL/FRAME:004580/0870 Effective date: 19860417 |
|
AS | Assignment |
Owner name: SUBJECT TO AGREEMENT RECITED SEE DOCUMENT FOR DETA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BASF STRUCTURAL MATERIALS INC.;REEL/FRAME:004718/0001 Effective date: 19860108 Owner name: BASF AKTIENGESELLSCHAFT, D-6700 LUDWIGSHAFEN, GERM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BASF STRUCTURAL MATERIALS INC.;REEL/FRAME:004718/0001 Effective date: 19860108 |