CA1239764A - Forming slab in mould containing porous fibrous material and liquid resins - Google Patents

Forming slab in mould containing porous fibrous material and liquid resins

Info

Publication number
CA1239764A
CA1239764A CA000466844A CA466844A CA1239764A CA 1239764 A CA1239764 A CA 1239764A CA 000466844 A CA000466844 A CA 000466844A CA 466844 A CA466844 A CA 466844A CA 1239764 A CA1239764 A CA 1239764A
Authority
CA
Canada
Prior art keywords
recited
flexible sheet
mold
sheet material
dimension
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
Application number
CA000466844A
Other languages
French (fr)
Inventor
Murray A. Davis
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to CA000466844A priority Critical patent/CA1239764A/en
Application granted granted Critical
Publication of CA1239764A publication Critical patent/CA1239764A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D19/00—Gloves
    • A41D19/04—Appliances for making gloves; Measuring devices for glove-making
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0033—Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0064—Producing wearing apparel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0064—Producing wearing apparel
    • B29D99/0067—Gloves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/4864—Gloves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Gloves (AREA)

Abstract

A flexible sheet material shaped article comprises a thermoplastic material having a plurality of spaced breathing apertures extending through the thickness thereof, each breathing aperture filled with a porous fibrous material. The flexible sheet material shaped article is formed by utilizing a vertical mold, and hanging a plurality of spaced strands of porous fibrous material from the top of the mold. The mold has a plan or crosssectional shape corresponding to the shape of the article being provided. The mold is then filled with liquid thermoplastic material, and after cooling a slab of thermoplastic material with strands of fibrous material is produced. The slab is then sliced in a dimension perpendicular to the dimension in which the strands extend, and to the desired thickness to provide the flexible sheet material shaped article.

Description

RYE OF TOE INVENTION

There are many applications for iElex~ble sheet material having appropriate breathing qualities. For instance most articles of clothing, particularly gloves, shoe up us and Swiss and the like, must have appropriate breathing qualities to be useful Natural leather and other natural materials, have appropriate bring qualities IBM
when it is desired to make use us articles out of synthetic material, the breathing qualities are usually not present.
According to the method of the present invention, it is possible to make flexible sheets of synthetic, or other thermoplastic materials thaw lo have appropriate breathing qualities 50 that they can be used in place ox natural leather or the like, in articles of clothing and for other useful : articles that require significant breathing characteristics.
The method according to the invention is practiced by u~ilizislg a mold elongated in a first dimension, and having a plan or Ross sectional shape s: corresponding to the desired pow of the sheet material article being produced. Preferably the mold is oriented so that the first Dionysian is vertical. A plurality of strands of porous fibrous material, sushi as trueness of natural material ego. cotton, WAGE or the lucre hung from the top of the mold to extend in the first denizen Then liquid thermoplastic material is poured unto the told.
Aster tooling of the thermoplastic material, a slab havislg a plurality of spaced strands extending therethrou~h results. The slab is '
2 I x when sliced in a dimension substantially perpendicular to the f first dimension ( i., e.
substanti ally perpendicular to the dimension of elongation of 'eke strands in the slab), to produce flexible sheets off mate tat having the desired thickness .
The flexible sheets of material according o 'eke present invention comprise therTnoplastic sheets having a plurality of spaced breathing apertures extending through the thickness thereof ash breathing aperture filled with a porous fibrous material. the sheet material can be utilized in any application where breathing characteristics are necessary or desirable, and may have the configuration ox a glove blank, shoe upper or sole, or other article of clothing.
It is the primary object of the present invention to produce flexible sheets of material having good breathing characteristics. This and other objects of the invention will become clear from an inspection of the detailed description of the invention, and from the appended claims.

FIGURE 1 is a perspective view of an exemplary mold utilized in practicing the method according to the present invention with a portion whereof broken away; and FIGURE 2 is a perspective view of a slab produced according to the present invention being sliced into sheets of flexible material I

~=~ DRAWINGS

A mold I that is utilizable Lo practicing the present invention it shown in Foggily 1. The mold is elongated in a dimension V, which dimension V is preferably (although not necessarily) vertical during use. The mold includes first and second ends 12, 14, which comprise top and bottom portions respectively when the mold it vertical, and an opening 16 is provided in the top thereon for the introduction of thermoplastic material.
on practicing the method of the present invention, a plurality ox strands 18 are disposed within the mold in the dimension of elongation V
thereof. For instance the strands are hung from the top portion 12 ox the mold 10, being held thereto by any suitable conventional means such as clamps, apertures, wire twists, or the like.
Thy strands 18 are of any suitable porous fibrous material. Examples of suitable fibrous porous Metro at are natural material yarns, such as cotton and wool yarns. However any strands what have the desired porosity to provide desired breathing characteristics in the f final article produced may be utili%edo Preferably, the mold 10 has a shape in plan or cxoss-section, of the desired article to be produced. In the exemplary embodiment illustrated in FUGUE 1, the mold 10 has the general shape of a human hand in plan or cross-section, and is adapted to produce glove blanks Once the strands 18 have been properly oriented in the mold 10, the mold is substantially filled with liquid thermoplastic material The homoplastic material may, for instance, be pourer
3 I

into opening 16, to substantially fill the mold.
The term thermoplastic material as used in he present specification and claims includes any moldable material that has sufficient flexibility when thin and particularly is utilizable for the production of articles of clothing - such as glove blanks, shoe uppers and sole, panels of raincoats -- or like articles, such as car seat covers, and tarpaulins, which require usable breathing caricaturists Typical materials thaw are eminently suited or use in practicing the invention are vinyl, neoprene, end natural rubber.
the thermoplastic aureole is cooled so hat it sets, and forms a slab 20 see FUGUE 2) having a plan and Ross sectional configuration corresponding to that of the mold 10. The slab 20 is then sliced, as by utilizing the thin rotary blade 22, on a dimension I. The dimension is substantially perpendicular Jo the dimension V e.
perpendicular to the dimension of elongation of the strands 18 in slab 25). the slicing is practiced so that final flexible sheet material articles 24 are produced having the desired thickness An arid* 24 of flexible sheet material according to the present invent on ~omprlse~
flexible sheet material having a plurality of spatted breathing apertures 26 eactending 'Roy the icons theres:fO The breathing apertures are filled with porous fibrous ~nateTial -- i.e. sections of strands :18., The articles 24 are suitable for constr~tion of anti ales of Lang, and other f final articles that require desired breathing ~har~cteri~tics. For irlstance~ a glove blank 24 elude be used as the palm portion of a glove which . 35 could be sewn or otherwise affixed to a glove upper 'I

of leather, plastic cloth, so other conventional material in a conventional manner when the mold 10 is oriented vertically that is dimension V as essentially vertical, the slab formed tends to have a greater strength at the bottom of the mold 10 than at the top. Thus any slices 24 from the slab 20 that was formerly the top of the mold may be derided or utilized or articles having lower strength requirement.
It will thus be seen that according to the present invention a shaped piece of Elexi~le sheet material, and a method of forming flexible sheet material according to the invention, have been provided which result in the quirk and easy lo formation of shaped pieces of flexible sheet material having desired breathing characteristics.
While the invention has been herein shown in what is presently conceived to be the most practical and preferred embodiment thereof, it will be apparent to those of ordinary skill in the art that many modification may be mode thereof within the slope of the invention, which scope is to be accorded the broadest interpretation of the appended claims so a to encompass all equivalent methods and products.

Claims (20)

WHAT IS CLAIMED IS:
1. A method of forming a porous flexible sheet material utilizing a mold elongated in a first dimension, comprising the steps of:
(a) disposing a plurality of strands of porous fibrous material in said mold extending substantially along said first dimension;
(b) substantially filling the mold with a liquid thermoplastic polymer material to provide a slab having a thickness at least several times the thickness of the desired sheet to be formed therefrom;
(c) cooling the thermoplastic material to provide a slab having a plurality of strands of porous fibrous material extending therein; and (d) slicing the slab in a dimension substantially perpendicular to said first dimension to provide flexible sheets having the desired thickness and having a plurality of spaced breathing apertures extending through the thickness thereof, the apertures being filled with porous fibrous material.
2. A method as recited in claim 1 comprising the further step of utilizing said flexible sheet material to form articles of clothing.
3. A method as recited in claim 2 wherein the mold has the general cross-sectional configuration of a human hand, and wherein the flexible sheet of material produced have a configuration of glove blanks, and wherein articles of clothing are produced by affixing a glove blank to a glove upper part to form a glove.
4. A method as recited in claim 1 wherein said first dimension is essentially vertical during the practice of steps (a) and (b).
5. A method as recited in claim 1 wherein the thermoplastic material is selected from the group consisting essentially of vinyl, neoprene, and natural rubber.
6. A method as recited in claim 5 wherein the strands are natural material yarn strands.
7. A method as recited in claim 1 wherein the strands are natural material yarn strands.
8. A method as recited in claim 4 wherein the slices of flexible sheet material formed from that portion of the slab that was in the top portion of the mold are discarded.
9. A method of forming breathing flexible sheet material shapes suitable for u e in the construction of articles of clothing, and utilizing a mold elongated in a first dimension and having a plan or cross-sectional shape corresponding to the shape of the flexible sheet material shapes to be produced, consisting of the steps of:
(a) disposing a plurality of strands of porous fibrous material in said mold extending substantially along said first dimension;

(b) substantially filling the mold with a liquid thermoplastic polymer material to provide a slab having a thickness at least several times the thickness of the desired sheet to b formed therefrom;

(c) cooling the thermoplastic material to provide a slab having a plurality of strands of porous fibrous material extending therein; and (d) slicing the slab in a dimension substantially perpendicular to aid first dimension to provide flexible sheet material shapes having the desired thickness and having a plurality of spaced breathing apertures extending through the thickness thereof, the apertures being filled with porous fibrous material.
10. A method as recited ill claim 9 wherein the mold has the general cross-sectional configuration of a human hand, and wherein the flexible sheet material shapes produced have the shape of glove blanks.
11. A method as recited in claim 9 wherein said first dimension is essentially vertical during the practice of steps (a) and (b).
12. method as recited in claim 11 wherein the slices of flexible sheet material formed from that portion of the slab that was in the top portion of the mold are discarded.
13. A method as recited in claim 11 wherein the thermoplastic material is selected from the group consisting essentially of vinyl, neoprene, and natural rubber.
14. A method as recited in claim 13 wherein the strands are natural material yarn strands.
15. A flexible sheet material shaped article of thermoplastic polymer material having a plurality of spaced breathing apertures extending through the thickness thereof, each breathing aperture being filled with a porous fibrous material.
16. A flexible sheet material shaped article as recited in claim 15 wherein the thermoplastic material is selected from the group consisting essentially of vinyl, neoprene, and natural rubber.
17. A flexible sheet material shaped article as recited in claim 16 wherein the porous fibrous material filling the breathing apertures comprises natural multi-filament yarns.
18. A flexible sheet material shaped article as recited in claim 15 wherein the porous fibrous material filling the breathing apertures comprises natural multi-filament yarns.
19. A flexible sheet material shaped article as recited in claim 15 having the shape of a glove blank.
20. A flexible sheet material shaped article as recited in claim 15 comprising a part of an article of clothing.
CA000466844A 1984-11-01 1984-11-01 Forming slab in mould containing porous fibrous material and liquid resins Expired CA1239764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000466844A CA1239764A (en) 1984-11-01 1984-11-01 Forming slab in mould containing porous fibrous material and liquid resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000466844A CA1239764A (en) 1984-11-01 1984-11-01 Forming slab in mould containing porous fibrous material and liquid resins

Publications (1)

Publication Number Publication Date
CA1239764A true CA1239764A (en) 1988-08-02

Family

ID=4129060

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000466844A Expired CA1239764A (en) 1984-11-01 1984-11-01 Forming slab in mould containing porous fibrous material and liquid resins

Country Status (1)

Country Link
CA (1) CA1239764A (en)

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