CA2476272A1 - Dry formed composite with cut and place layers - Google Patents

Dry formed composite with cut and place layers Download PDF

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Publication number
CA2476272A1
CA2476272A1 CA002476272A CA2476272A CA2476272A1 CA 2476272 A1 CA2476272 A1 CA 2476272A1 CA 002476272 A CA002476272 A CA 002476272A CA 2476272 A CA2476272 A CA 2476272A CA 2476272 A1 CA2476272 A1 CA 2476272A1
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CA
Canada
Prior art keywords
layer
additional
forming station
speed
cut
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Granted
Application number
CA002476272A
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French (fr)
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CA2476272C (en
Inventor
Andrew Baker
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Paragon Trade Brands LLC
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Individual
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Filing date
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Publication of CA2476272A1 publication Critical patent/CA2476272A1/en
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Publication of CA2476272C publication Critical patent/CA2476272C/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/535—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15617—Making absorbent pads from fibres or pulverulent material with or without treatment of the fibres
    • A61F13/15626—Making fibrous pads without outer layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15723—Partitioning batts; Cutting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • Y10T156/1077—Applying plural cut laminae to single face of additional lamina
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y10T156/133—Delivering cut part to indefinite or running length web
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1317—Means feeding plural workpieces to be joined
    • Y10T156/1322—Severing before bonding or assembling of parts
    • Y10T156/1339—Delivering cut part in sequence to serially conveyed articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work
    • Y10T156/1734—Means bringing articles into association with web

Abstract

The present invention generally relates to a method and apparatus for forming an absorbent garment (10) and an absorbent core (28). The absorbent composite core (28) preferably is comprised of at least four layers, whereby two of the layers are outer layers, (an upper layer (280) and a lower layer (282)), one of the inner layers is a central fibrous layer (284) containing a mixture of two fibers (288) and SAP (289) , and the other inner layer (286) is at least one layer selected from an acquisition layer, a distribution layer, an additional fibrous layer optionally containing SAP, a wicking layer, a storage layer, a dryness layer, a softness layer, or combination and fragments thereof.

Claims (73)

1. A method of making an absorbent composite core comprising:
providing an upper layer to a core forming station;
providing a lower layer to a core forming station;
providing at least one additional layer;
cutting the at least one additional layer and placing it on a surface of the upper layer or lower layer; and forming the absorbent composite core at the core forming station by forming a central fibrous layer comprising a mixture of tow fibers and superabsorbent polymer material (SAP) and disposing the central fibrous layer between the upper layer and the lower layer.
2. The method of claim 1, wherein the at least one additional layer is selected from the group consisting of a fluid acquisition layer, a distribution layer, an additional fibrous layer optionally containing SAP, a wicking layer, a storage layer, a dryness layer, a softness layer, and combinations and fragments thereof.
3. The method of claim 1, wherein one additional layer is used, and the layer is a fluid acquisition layer.
4. The method of claim 1, wherein one additional layer is used, and the layer is a distribution layer.
5. The method of claim 1, wherein one additional layer is used, and the layer is an additional fibrous layer containing SAP.
6. The method of claim 1, wherein one additional layer is used, and the layer is a wicking layer.
7. The method of claim 1, wherein one additional layer is used, and the layer is a storage layer.
8. The method of claim 1, wherein one additional layer is used, and the layer is a fragmented layer.
9. The method of claim 1, wherein one additional layer is used, and the layer is a combination of a wicking layer and a distribution layer.
10. The method of claim 1, wherein two additional layers are used.
11. The method of claim 1, wherein the at least one additional layer is placed on the upper or lower layer prior to providing the upper layer or lower layer to the core forming station.
12. The method of claim 1, wherein the at least one additional layer is placed on the upper or lower layer after providing the upper layer or lower layer to the core forming station.
13. The method of claim 12, wherein the at least one additional layer is a softness layer.
14. The method of claim 1, wherein the central fibrous layer comprises from about 30% to about 95% by weight super absorbent polymer (SAP).
15. The method of claim 1, wherein the central fibrous layer comprises cellulose ester tow fibers.
16. The method of claim 15, wherein the tow fibers are cellulose acetate tow fibers.
17. The method of claim 1, wherein the upper and lower layer are comprised of the same material, and the material is selected from the group consisting of tissue, airlaid fluff pulp, synthetic non-woven material, and mixtures or combinations thereof.
18. The method of claim 17, wherein the upper layer is fluid pervious, and the lower layer is fluid impervious.
19. The method of claim 1, wherein the central fibrous layer further comprises up to 10% by weight fluff wood pulp fibers.
20. The method of claim 1, wherein the central fibrous layer further comprises particulate additives.
21. The method of claim 1, wherein the at least one additional layer is provided prior to cutting at a first speed, and the upper layer or lower layer are provided to the core forming station at a second speed, the second speed being different from the first speed.
22. The method of claim 21, wherein the second speed is faster than the first speed.
23. A method of making an absorbent article comprising:
a) providing a top sheet and a back sheet to a garment forming station;
b) preparing an absorbent composite core by:
b1) providing an upper layer to a core forming station;
b2) providing a lower layer to a core forming station;
b3) providing at least one additional layer;
b4) cutting the at least one additional layer and placing it on a surface of the upper layer or lower layer; and b5) forming the absorbent composite core at the core forming station by forming a central fibrous layer comprising a mixture of tow fibers and superabsorbent polymer material (SAP) and disposing the central fibrous layer between the upper layer and the lower layer;
c) providing the absorbent composite core to the garment forming station;
and d) disposing the absorbent composite core between the top sheet and the back sheet at the garment forming station,
24. The method of claim 23, whereby the absorbent garment is prepared such that the top sheet and the back sheet form a first waist region, a second waist region longitudinally opposite the first waist region, and a crotch region between the waist regions.
25. The method of claim 24, further comprising e) attaching at least one fastening element to lateral edges of the first waist region; and f) preparing at least one target device and attaching the at least one target device to the article in the second waist region, where the at least one fastening element and the at least one target device are capable of attaching to one another, the at least one target device being located so that the first waist region and second waist region of the article may be joined to one another to secure the article on a wearer.
26. The method of claim 25, wherein the at least one fastening element comprises a hook portion of a hook and loop fastener and the at least one target device comprises the loop portion of a hook and loop fastener.
27. The method of claim 25, wherein the at least one fastening element is an adhesive tape and the at least one target device comprises a tape receiving surface.
28. The method of claim 25, wherein the at least one fastening element is comprised of a pair of laterally extending tabs disposed on the lateral edges of the first waist region, whereby the laterally extending tabs each include at least one fastening element.
29. The method of claim 23, wherein the at least one additional layer is selected from the group consisting of a fluid acquisition layer, a distribution layer, an additional fibrous layer optionally containing SAP, a wicking layer, a storage layer, a dryness layer, a softness layer, and combinations and fragments thereof.
30. The method of claim 23, wherein one additional layer is used, and the layer is a fluid acquisition layer.
31. The method of claim 23, wherein one additional layer is used, and the layer is a distribution layer.
32. The method of claim 23, wherein one additional layer is used, and the layer is an additional fibrous layer containing SAP.
33. The method of claim 23, wherein one additional layer is used, and the layer is a wicking layer.
34. The method of claim 23, wherein one additional layer is used, and the layer is a storage layer.
35. The method of claim 23, wherein one additional layer is used, and the layer is a fragmented layer.
36. The method of claim 23, wherein one additional layer is used, and the layer is a combination of a wicking layer and a distribution layer.
37. The method of claim 23, wherein two additional layers are used.
38. The method of claim 23, wherein the at least one additional layer is placed on the upper or lower layer prior to providing the upper layer or lower layer to the core forming station.
39. The method of claim 23, wherein the at least one additional layer is placed on the upper or lower layer after providing the upper layer or lower layer to the core forming station.
40. The method of claim 39, wherein the at least one additional layer is a softness layer.
41. The method of claim 23, wherein the central fibrous layer comprises from about 30% to about 95% by weight super absorbent polymer (SAP).
42. The method of claim 23, wherein the central fibrous layer comprises cellulose ester tow fibers.
43. The method of claim 42, wherein the tow fibers are cellulose acetate tow fibers.
44. The method of claim 23, wherein the upper and lower layer are comprised of the same material, and the material is selected from the group consisting of tissue, airlaid fluff pulp, synthetic non-woven material, and mixtures or combinations thereof.
45. The method of claim 44, wherein the upper layer is fluid pervious, and the lower layer is fluid impervious.
46. The method of claim 23, wherein the central fibrous layer further comprises up to 10% by weight fluff wood pulp fibers.
47. The method of claim 23, wherein the central fibrous layer further comprises particulate additives.
48. The method of claim 23, wherein the at least one additional layer is provided prior to cutting at a first speed, and the upper layer or lower layer are provided to the core forming station at a second speed, the second speed being different from the first speed.
49. The method of claim 48, wherein the second speed is faster than the first speed.
50. An apparatus for forming an absorbent composite core comprising:
a composite core forming station;
an upper layer supply mechanism for supplying an upper layer material to the composite core forming station;
a lower layer supply mechanism for supplying a lower layer to the composite core forming station;
a central fibrous layer making device for making the central fibrous layer by mixing tow fibers and superabsorbent polymer material (SAP), and for supplying the central fibrous layer to the core forming station; and a cut-and-place apparatus for effecting cutting of at least one additional layer that is supplied to the cut-and-place apparatus at a first speed, and placing the cut additional layer(s) on either the upper layer or lower layer at a second speed, whereby the respective components are positioned relative to one another such that the central fibrous layer is disposed between the upper layer and the lower layer at the core forming station.
51. The apparatus of claim 50, whereby the second speed is different from the first speed.
52. The apparatus of claim 51, wherein the second speed is faster than the first speed.
53. The apparatus of claim 50, wherein the cut-and-place apparatus is positioned to place the at least one additional layer on the upper or lower layer upstream from the core forming station.
54. The apparatus of claim 50, wherein the cut-and-place apparatus is positioned to place the at least one additional layer on the upper or lower layer downstream from the core forming station.
55. The apparatus of claim 50, wherein the cut-and-place apparatus comprises:
a feed roller system for feeding a web containing the at least one additional layer to the cut-and-place apparatus at a first speed;
a cutting station to cut the web containing the at least one additional layer into discrete additional layers; and a rotatable vacuum transfer drum for transferring the cut discrete additional layers at a second speed and placing the discrete additional layers on either the upper layer or lower layer.
56. The apparatus of claim 55, wherein the feed roller system comprises one or more dancer rolls, edge guide rolls, and pull rolls.
57. The apparatus of claim 55, wherein the cutting station comprises a knife roller and an anvil roller.
58. The apparatus of claim 55, further comprising a controller capable of controlling the first speed and the second speed to adequately cut-and-place the at least one additional layer on the upper layer or lower layer.
59. The apparatus of claim 55, further comprising an additional layer conveyor for placing the cut discrete additional layers on either the upper layer or the lower layer.
60. An apparatus for forming an absorbent garment comprising:
a garment forming station;
a top sheet supply mechanism for supplying a top sheet material to the garment forming station;
a back sheet supply mechanism for supplying a back sheet material to the garment forming station;
an apparatus for making a composite absorbent core that comprises:
a composite core forming station;
an upper layer supply mechanism for supplying an upper layer material to the composite core forming station;
a lower layer supply mechanism for supplying a lower layer to the composite core forming station;
a central fibrous layer making device for making the central fibrous layer by mixing tow fibers and superabsorbent polymer material (SAP), and for supplying the central fibrous layer to the core forming station; and a cut-and-place apparatus for effecting cutting of at least one additional layer that is supplied to the cut-and-place apparatus at a first speed, and placing the cut additional layers) on either the upper layer or lower layer at a second speed, whereby the respective components are positioned relative to one another such that the central fibrous layer is disposed between the upper layer and the lower layer at the core forming station; and an absorbent composite core feed mechanism for feeding the absorbent composite core to the garment forming station, whereby the respective components are arranged such that the absorbent composite core is disposed between the top sheet material and the back sheet material at the garment forming station.
61. The apparatus of claim 60, further comprising an elastic supply mechanism for feeding a supply of elastic material to the garment forming station.
62. The apparatus of claim 60, further comprising a mechanism for feeding a fastening element to the absorbent garment after garment forming station, and for attaching the fastening element to the absorbent garment.
63. The apparatus of claim 60, further comprising a mechanism for feeding a standing leg gather to the absorbent garment after garment forming station, and for attaching the standing leg gather to the absorbent garment.
64. The apparatus of claim 60, further comprising a mechanism for feeding a waist elastic material to the absorbent garment prior to garment forming station.
65. The apparatus of claim 60, whereby the second speed is different from the first speed.
66. The apparatus of claim 65, wherein the second speed is faster than the first speed.
67. The apparatus of claim 60, wherein the cut-and-place apparatus is positioned to place the at least one additional layer on the upper or lower layer upstream from the core forming station.
68. The apparatus of claim 60, wherein the cut-and-place apparatus is positioned to place the at least one additional layer on the upper or lower layer downstream from the core forming station.
69. The apparatus of claim 60, wherein the cut-and-place apparatus comprises:
a feed roller system for feeding a web containing the at least one additional layer to the cut-and-place apparatus at a first speed;
a cutting station to cut the web containing the at least one additional layer into discrete additional layers; and a rotatable vacuum transfer drum for transferring the cut discrete additional layers to either the upper layer or the lower layer at a second speed.
70. The apparatus of claim 69, wherein the feed roller system comprises one or more dancer rolls, edge guide rolls, and pull rolls.
71. The apparatus of claim 69, wherein the cutting station comprises a knife roller and an anvil roller.
72. The apparatus of claim 69, further comprising a controller capable of controlling the first speed and the second speed to adequately cut-and-place the at least one additional layer on the upper layer or lower layer.
73. The apparatus of claim 69, further comprising an additional layer conveyor for placing the cut discrete additional layers on either the upper layer or the lower layer.
CA2476272A 2002-02-14 2003-02-10 Dry formed composite with cut and place layers Expired - Lifetime CA2476272C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/074,215 US6641695B2 (en) 2002-02-14 2002-02-14 Dry formed composite with cut and place layers
US10/074,215 2002-02-14
PCT/US2003/003838 WO2003068122A1 (en) 2002-02-14 2003-02-10 Dry formed composite with cut and place layers

Publications (2)

Publication Number Publication Date
CA2476272A1 true CA2476272A1 (en) 2003-08-21
CA2476272C CA2476272C (en) 2011-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2476272A Expired - Lifetime CA2476272C (en) 2002-02-14 2003-02-10 Dry formed composite with cut and place layers

Country Status (5)

Country Link
US (1) US6641695B2 (en)
AU (1) AU2003210931A1 (en)
CA (1) CA2476272C (en)
MX (1) MXPA04007868A (en)
WO (1) WO2003068122A1 (en)

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US6641695B2 (en) 2003-11-04
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MXPA04007868A (en) 2004-11-26
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