US1661727A - Method and apparatus for making packing for fragile articles - Google Patents

Method and apparatus for making packing for fragile articles Download PDF

Info

Publication number
US1661727A
US1661727A US553139A US55313922A US1661727A US 1661727 A US1661727 A US 1661727A US 553139 A US553139 A US 553139A US 55313922 A US55313922 A US 55313922A US 1661727 A US1661727 A US 1661727A
Authority
US
United States
Prior art keywords
sheet
forms
holders
suction
drum
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
Application number
US553139A
Other languages
English (en)
Inventor
Koppelman Morris
Cooper Simon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MOULDED PULP DEVICES Inc
Original Assignee
MOULDED PULP DEVICES Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27070253&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US1661727(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MOULDED PULP DEVICES Inc filed Critical MOULDED PULP DEVICES Inc
Priority to US553139A priority Critical patent/US1661727A/en
Priority to US575516A priority patent/US1429207A/en
Priority to DEK85296D priority patent/DE417354C/de
Priority to DK33281D priority patent/DK33281C/da
Application granted granted Critical
Publication of US1661727A publication Critical patent/US1661727A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/32—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for eggs
    • B65D85/321—Trays made of pressed carton and provided with recesses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D3/00—Making articles of cellular structure, e.g. insulating board
    • B31D3/04—Making articles of cellular structure, e.g. insulating board cellular packaging articles, e.g. for bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/0733—Pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/0738—Cross sectional profile of the embossments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0758—Characteristics of the embossed product

Definitions

  • This invention relates to packing units for fragile articles, such as eggs, electric light bulbs, and other globular objects made of glass or other brittle material. and have for their object. among others, the production of a packing unit of highly eflicient form in such a manner and of such materials that the strength. durability, and usefulness of the unit are increased and the cost of production decreased.
  • Walls which, with the bottom portion, form v the cup-like interior.
  • wood pulp or cellulose or other loose fibrous material is employed, the fibres being first placed in a liquid bath. Macerated paper, thoroughly disintegrated and mixed with .water until it has the consistency of a thick soup may be employed, as may other similar materials.
  • the loose floatingfibres are then drawn against suitable formers by means of interior suction, so that they. will lie on one another and conform to the shape of the article before becoming set, and the coating thus formed is subjected to the pres-. sure of a former, after it has passed from the bath but before it is dry so that it will have'a comparatively smooth surface and be fairly compact. It is now permitted to set.
  • a hardening substance such as Portland cement may be added to the bath in quantity sulficient to secure the desired result, but this is not necessary or even preferable in most cases.
  • the holders are of such form and are so constructed and arranged as to hold the eggs or other articles securely and to lock the cell walls or tillers against all lateral movement. while at the same time they are only relatively rigid and will have a sufiicient degree of elasticity to accommodate themselves to slight variations in the sizes of the.
  • Figure 1 is a. diagrammatic elevation of a mechanism for practicing the meth-' od or process:
  • Fig. 2 is a vertical medial section of a drum such as that shown in Figure 1, with suction and compressed air tubes and their connections indicated in full lines;
  • Fig. 3 is a plan of one of the formers for the holders and connecting portions;
  • Fig. 4 is a vertical section of the same on the line 4-4 of Fig. 3;
  • Fig. 5 is a detail of the former of Figs. 3 and 1 and a fragment of one of the compressing dies applied to the holder which has been formed thereon;
  • Fig. 6 is a vertical medial section of a portion of two of the packing units with lillels of standard form between them and eggs positioned in the holders, and Fig. 7 is a plan thereof.
  • a drum or roller is indicated at l. and on the outer periphery of this drum the forms for shaping the packing unit are mounted. in cross rows, preferably six or twelve holders to the row, as it is customary in egg packing to pack the eggs in rows of six each.
  • Each form consists of a relatively flat base and connecting portion 2, a ring in truncated cone form projecting therefrom and consisting of the upstanding outer portion 3, the inner inwardly and downwardly inclined portion 4, and the bottom middle portion 5, these parts being composed of outer and inner sheets of wire fabric, the outer one 6 being finer than the inner one 7. which is stronger and acts primarily as a backing or reinforcement for the outer. finer mesh.
  • the drum is mounted above the tank or tub 15 containing a liquid composed of water and loose fibres, preferably cellulose or other suitable vegetable fibre suspended therein so as to give the bath the consistency of a thick soup. and the lower part of the drmn is constantly immersed in this bath, so that as it rotates the forms will be passed through it and will receive a coating of fibres or pulp, depending for its thickness on the thickness of the bath or soap, the speed of rotation and the degree of interior suction.
  • a liquid composed of water and loose fibres preferably cellulose or other suitable vegetable fibre suspended therein so as to give the bath the consistency of a thick soup.
  • the lower part of the drmn is constantly immersed in this bath, so that as it rotates the forms will be passed through it and will receive a coating of fibres or pulp, depending for its thickness on the thickness of the bath or soap, the speed of rotation and the degree of interior suction.
  • the suction pipe 13 has radial branche; 16 extending therefrom to a point in close proximity to the inner periphery of the drum at its lower part and where it passes through the bath. so that a stronger suction is produccd at this point than at other parts of the drum.
  • the branch pipes 16 are preferably flared so as to present a large suction area, but any desired form may be employed.
  • Other branches may be located above the bath, and particularly opposite the compression dies, to draw air through the layer of fibrous material on the forms and remove excess water, vand also to vhold the same tightly against the forms.
  • a sectoifi having rubber or other suitable strips in contact with the inner periphery of the drum may be located for the purpose of isolating that portion of the )eriphery from the suction and preventing the reduction of the partial vacuum by the inrush of air through the open forms. This will also facilitate removal of the sheet by the fingers.
  • the forms passthrough the bath the liquid is drawn in through the forms, and the loose floating fibrous material deposited on the exterior thereof so that a sheet or coating conforming to the said forms is applied thereto.
  • the forms with the coating thereon now ascend out of the bath and through an arc of approximately 120, and are then subjected 'tothe action of the compressing dies 18 on the drum 17 mounted above the first drum and geared therewith, so as to insure registration of the dies with the forms.
  • the dies being set closer to the forms than the outer surface of the sheet, will compress the latter and smooth and accurately shape its outer surfaces, taking out any small irregularities that may be found thereomand also squeezing out any excess water that may remain.
  • the sheets then pass to the blowing jets, where they are removed from the drum and caused to travel over fingers 19 to a belt 20, which may be employed to convey them to and through a drier, such as an oven provided with heating burners. After this they may be cut into separate sheets as desired.
  • the removal of the formed sheets in a moist state is accomplished by air under pressure first applied to one edge of the continuous sheet and from there across the sheet.
  • a series of pipes 21 branching from the compressed air pipe 14 are employed.
  • a valve will be opened so that compressed air will.be projected against the underside of. the forms and through them against the underside of the formed sheet.
  • the branch pipes 21 are made of progressivelyv smaller diameter from one edge of the drum to the other so that the volume of air will be greater and the air jet will be applied first at that edge, and then across the sheet. .
  • this nozzle may be thrust into the pipe 14 so that its opening will register with the pipes 21 successively,
  • a nozzle of this character may also be arranged to Work automatically instead of by hand, and may pass back and forth through the pipe 14 more than once if better results are thus attained.
  • Water will be removed from the bottom of the drum by the suction tubes, and returned to the tank through a suitable conduit, and this applies to water drawn in at the tank by the tubes as well as water which may be removed later from the forms and the molded sheet. If desired the cylinder 1 may be provided with an outlet for this purpose.
  • the holding and packing units formed by the process described consist of sheets of material 22 with raised cone frustum-like members thereon, arrangedin parallel rows. Each sheet will usually have six rows of six holders each, making thirty-six holders in all, this being the standard capacity of ordinary sheets or -flats and the cell forming members or fillers between them.
  • the portions of the sheets between the projecting holders are curved upwardly toa slight ex tent or grooved as shown at 28, where they receive the edges of the tiller 23, so that when a sheet is placed on the top of a filler it will engage the upper edges of the filler members in these grooves and thereby provide a means for further'positioning and holding the two parts.
  • the lower edges of the tiller are securely held between the projecting holders.
  • Each holder consists of an upwardly and inwardly inclined ring 24 and a'downwardly' and inwardly inclined interior wall 25 with an approximately horizontal bottom and central portion 26, the angles and arrangement of these members may be varied to some extent, but it is in'iportant that the opening at the top shall be large enough to receive either end of the egg or other article to be placed therein. so the edges of the opening will engage the wall of the article at such an angle that there will be a degree of wedging action.
  • the depressed central portion of the'holder extends to a point above the sheet proper 22, which is the base of the holder, so that normally it does not come in contact with the article positioned therein, except at its upper part.
  • the bottom portion 26 is preferably slightly concavo-convex, but this is not absolutely essential, nor is its exact position. These may be varied according to the nature of the article, and the use to which the packing is put.
  • eggs 27 are shown, and it will be observed that they rest upon the lower holders above their bottoms and have their upper-ends immediately below the bottom portions 26 of the holders above, which may receive other eggs or be employed as a cushion between the top or bottom layer and the walls of the case or package.
  • the packing unit therefore serves to hold the eggs or other articles above and below it, so that but one flat or unit is used for each layer of eggs, except where additional units are used at top and bottom as cushions.
  • the holders may be made lower, and the middle portion26 permitted to project below the base sheet so that each egg will be within the upper and lower edges of its cell or compartment, and will at the same time be separated from those above and below it and held.
  • the construction limited to one in which the upper end of the eggis held by the middle bottom portion of the holder above it.
  • the mesh 6 is not in close contact with the backing 7, and this permits a limited relative movement and also circulation of liquid, which tends to, remove fibres lodged therein, and secures other advantages.
  • a nozzle for removing the sheets by means of an air jet may be inserted, mechanically or by hand, near the periphery of the drum and through one of its heads, and the pipes 14 and 21 thus dispensed with.
  • the method or process of making packing units for globular fragile articles comprising t'iat portions with hollow members projectin therefrom in truncated conical form, with depressed middle portions adapted to receive the globular article at its inner upper edges, which consists in taking a form of foraminous material, producing suction on one side thereof, immersing the form in a liquid having fibrous material floating therein, thereby causing the liquid to be drawn through the foraminous form and to deposit the fibrous material thereon, then removing the form from the liquid with the coating of fibrous material thereon, pressing a die corresponding in contour to the .form against the exterior of the said coating, then removing the die and then progressively applying jets of air or the like under pressure to the side of the form to which the suction is applied and thereby removing the formed coating therefrom.
  • a hollow member mounted to rotate, foraminous forms carried thereby and arranged to rotate therewith, fixed suction conduits extending to the interior of said hollow rotating member and to proximity with said forms, whereby suction through said forms may be maintained, fixed pressure Ill conduits extending into the interior of said hollow rotating member and to proximity with said forms whereby fluid pressure may he maintained against said forms, said pressure conduit having branches otvarying diameter extending to different zones of the said hollow member.
  • a hollow member mounted to rotate, foraminous forms carried thereby and arranged to rotate therewith, fixed suction conduits extending to the interior of said hollow rotating member and to proximity with said forms whereby suction through said forms may be maintained, fixed pressure conduits extending into the interior of said hollow rotating member and to proximity with said forms whereby fluid pressure may be maintained against said forms, said suction and pressure conduits extending through the axis of said hollow rotating member and forming bearings for the same.
  • a suction form comprising foraminons sheet material having formed therein hollow projections comprising upwardly extending walls inclined toward the vertical axis thereof, downwardly and inwardly extending walls joining them at their upper part and a laterally extending bottom portion connecting said downwardly extending Walls and forming therewith a cup-like form.
  • a suction form comprising foraminous sheet material having formed therein hollow projections comprising upwardly extending walls inclined toward the vertical axis thereof, downwardly and inwardly extemling walls joining them at their upper part and a laterally extending bottom portion connecting said downwardly extending walls and forming therewith a cup-like form, a backing sheet of relatively thick material upon which the said form is mounted, said backing sheet being provided with numerous openings.
  • a suction form comprising foraminous sheet material having formed therein hollow proectionsl comprising upwardly extending walls inclined toward the vertical axis thereof, downwardly and inwardly extending walls joining them at their upper part and a laterally extending bottom portion connecting said downwardly extending walls and forming therewith a cup-like form, a back ing sheet of relatively thick material upon which the said form is n'iounted, the said inwardly and downwardly inclined walls terminating in proximity to said backing sheet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Packaging Frangible Articles (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
US553139A 1922-04-15 1922-04-15 Method and apparatus for making packing for fragile articles Expired - Lifetime US1661727A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US553139A US1661727A (en) 1922-04-15 1922-04-15 Method and apparatus for making packing for fragile articles
US575516A US1429207A (en) 1922-04-15 1922-07-17 Packing for fragile articles
DEK85296D DE417354C (de) 1922-04-15 1923-03-21 Verfahren und Siebtrommel mit Praegeaufsaetzen zur Herstellung von Verpackungsboegenaus Faserstoff
DK33281D DK33281C (da) 1922-04-15 1923-03-21 Pakningsplade til Æg og lignende skore Genstande.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US553139A US1661727A (en) 1922-04-15 1922-04-15 Method and apparatus for making packing for fragile articles
US575516A US1429207A (en) 1922-04-15 1922-07-17 Packing for fragile articles

Publications (1)

Publication Number Publication Date
US1661727A true US1661727A (en) 1928-03-06

Family

ID=27070253

Family Applications (2)

Application Number Title Priority Date Filing Date
US553139A Expired - Lifetime US1661727A (en) 1922-04-15 1922-04-15 Method and apparatus for making packing for fragile articles
US575516A Expired - Lifetime US1429207A (en) 1922-04-15 1922-07-17 Packing for fragile articles

Family Applications After (1)

Application Number Title Priority Date Filing Date
US575516A Expired - Lifetime US1429207A (en) 1922-04-15 1922-07-17 Packing for fragile articles

Country Status (3)

Country Link
US (2) US1661727A (de)
DE (1) DE417354C (de)
DK (1) DK33281C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668786A (en) * 1949-06-22 1954-02-09 Packaging Materials Corp Corrugated packing sheet
US2680996A (en) * 1951-11-03 1954-06-15 Packaging Materials Corp Corrugated paper machine
US2714340A (en) * 1952-09-27 1955-08-02 Packaging Materials Corp Corrugated paper machine
US3190791A (en) * 1961-12-04 1965-06-22 Banker S Life & Casualty Compa Pulp molding machine with molds forming an endless chain
US5230943A (en) * 1991-11-29 1993-07-27 Pulptech Corporation Free-flowing dunnage of molded pulp
US5900119A (en) * 1996-10-09 1999-05-04 E-Tech Products, Inc. Method of forming improved loose fill packing material from recycled paper
US9975272B1 (en) 2009-04-28 2018-05-22 Natural Stone Wall Solutions Stone wall construction method

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516596A (en) * 1968-08-19 1970-06-23 Richard Madden Citrus fruit and vegetable shipping container
WO2011139418A2 (en) 2010-04-26 2011-11-10 Columbia Insurance Company Food server assembly
USD632526S1 (en) 2010-04-26 2011-02-15 Columbia Insurance Company Food server
USD626380S1 (en) 2010-04-26 2010-11-02 Columbia Insurance Company Food server tray
USD634164S1 (en) 2010-04-26 2011-03-15 Columbia Insurance Company Food server
ES2529074B2 (es) * 2013-08-16 2020-06-16 Garcia Antonio Garcia Bandeja para presentación y conservación de alimentos
USD739181S1 (en) 2013-11-14 2015-09-22 Columbia Insurance Company Food server
USD745806S1 (en) 2013-11-14 2015-12-22 Columbia Insurance Company Food server
USD737102S1 (en) 2013-11-14 2015-08-25 Columbia Insurance Company Food server
USD745807S1 (en) 2014-11-04 2015-12-22 Columbia Insurance Company Food serving tray
USD751865S1 (en) 2014-11-04 2016-03-22 Columbia Insurance Company Food serving tray

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668786A (en) * 1949-06-22 1954-02-09 Packaging Materials Corp Corrugated packing sheet
US2680996A (en) * 1951-11-03 1954-06-15 Packaging Materials Corp Corrugated paper machine
US2714340A (en) * 1952-09-27 1955-08-02 Packaging Materials Corp Corrugated paper machine
US3190791A (en) * 1961-12-04 1965-06-22 Banker S Life & Casualty Compa Pulp molding machine with molds forming an endless chain
US5230943A (en) * 1991-11-29 1993-07-27 Pulptech Corporation Free-flowing dunnage of molded pulp
US5328568A (en) * 1991-11-29 1994-07-12 Pulptech Corporation Method and apparatus for manufacture of free-flowing dunnage of molded pulp
US5900119A (en) * 1996-10-09 1999-05-04 E-Tech Products, Inc. Method of forming improved loose fill packing material from recycled paper
US9975272B1 (en) 2009-04-28 2018-05-22 Natural Stone Wall Solutions Stone wall construction method

Also Published As

Publication number Publication date
US1429207A (en) 1922-09-12
DK33281C (da) 1924-05-26
DE417354C (de) 1925-08-10

Similar Documents

Publication Publication Date Title
US1661727A (en) Method and apparatus for making packing for fragile articles
US3432936A (en) Transpiration drying and embossing of wet paper webs
US3185370A (en) Molded pulp egg carton
US2120328A (en) Method of shaping sheet material
US2204664A (en) Method of making paper articles
US3034180A (en) Manufacture of cellulosic products
US2593328A (en) Perforated multiple ply bag
US3040947A (en) Food container
US1938982A (en) Method of making glass wool separators
US2187918A (en) Drying die for fibrous articles
US2533167A (en) Method and apparatus for applying adhesive to fibrous webs
US1324935A (en) Process and apparatus for manufacturing articles from paper pulp
US1618289A (en) Manufacture of nonplaniform fibrous articles
US1672249A (en) Apparatus for making composition boards or sheets
US1494345A (en) Continuous-process molding machine for fictile material
US1928568A (en) Method for forming wadding and bats, and product
US2760412A (en) Apparatus and method for reducing edge flash in pulp molded articles
US3802963A (en) Pulp molding system employing suction box which prevents rewetting of the molded products
US1211229A (en) Machine for making articles from pulp.
US2723600A (en) Method and apparatus for making hollow accreted fibrous bodies
US3515780A (en) Process for drying gel-regenerated cellulose film
US2222003A (en) Means for producing articles of fibrous composition
US1779313A (en) Apparatus relating to the manufacture of artificial filaments, threads, and the like
US1989455A (en) Machine for producing wadding
US2218547A (en) Method of saturating fibrous stock