CA2641977A1 - Footwear construction and method - Google Patents

Footwear construction and method Download PDF

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Publication number
CA2641977A1
CA2641977A1 CA2641977A CA2641977A CA2641977A1 CA 2641977 A1 CA2641977 A1 CA 2641977A1 CA 2641977 A CA2641977 A CA 2641977A CA 2641977 A CA2641977 A CA 2641977A CA 2641977 A1 CA2641977 A1 CA 2641977A1
Authority
CA
Canada
Prior art keywords
polyurethane
midsole
article
footwear
layer
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.)
Granted
Application number
CA2641977A
Other languages
French (fr)
Other versions
CA2641977C (en
Inventor
Paul Hubner
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.)
Baffin Inc
Original Assignee
Baffin 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
Application filed by Baffin Inc filed Critical Baffin Inc
Priority to CA2641977A priority Critical patent/CA2641977C/en
Priority to US12/615,386 priority patent/US20100050470A1/en
Publication of CA2641977A1 publication Critical patent/CA2641977A1/en
Application granted granted Critical
Publication of CA2641977C publication Critical patent/CA2641977C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/10—Footwear characterised by the material made of rubber
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/14—Footwear characterised by the material made of plastics
    • 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
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • B29D35/062—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding using means to bond the moulding material to the preformed uppers
    • 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
    • B29D35/10—Producing footwear having preformed soles or heels joined on to preformed uppers using a moulding technique, e.g. by feeding or injecting plastics material between the parts to be joined

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

An article of footwear having a rubber outsole, a polyurethane midsole bonded to the rubber outsole by polyurethane (PU) adhesive, and a polyurethane upper bonded to the midsole and the rubber outsole by injection molding. The invention also relates to a method of manufacturing an article of footwear comprising the steps of applying a layer of primer to a selected portion of a rubber outsole and allowing the layer of primer to dry; applying a first layer of PU adhesive over the primed portion of the outsole and allowing said first layer of PU adhesive to dry; applying a second layer of PU adhesive over the dried first layer of PU adhesive and allowing the second layer of PU adhesive to dry; forming, separately, a polyurethane upper by injection molding; setting the outsole and the upper in a mold; and, forming, via injection molding, a polyurethane midsole and activating the PU adhesive to bond the outsole to the midsole and to the upper, thereby forming the article of footwear.

Claims (16)

1. An article of footwear, comprising:
a) a rubber outsole b) a polyurethane midsole bonded to the rubber outsole by polyurethane (PU) adhesive and by injection molding of the midsole; and c) a polyurethane upper bonded to the polyurethane midsole by said injection molding of the midsole.
2. The article of footwear according to claim 1, further comprising a polyurethane shaft integrally formed with said upper such that the article of footwear is a boot.
3. The article of footwear according to claims 1 or 2, further comprising a removable insole which is insertable into the article of footwear and rests upon said midsole.
4. The article of footwear according to claims 1-3, further comprising one or both of a reinforced toe plate integrated into the polyurethane upper and a sole plate integrated into the polyurethane midsole.
5. The article of footwear according to claims 1-4, wherein the polyurethane midsole is formed from polyurethane of a density different from that of polyurethane used to form the polyurethane upper.
6. The article of footwear according to claim 5, wherein the polyurethane midsole is formed from a foamed polyurethane with a density higher than that of the polyurethane used to form the polyurethane upper.
7. A method of manufacturing an article of footwear, comprising:

a) applying a layer of primer to a selected portion of a rubber outsole and allowing said layer of primer to dry;

b) applying a first layer of polyurethane (PU) adhesive over the primed portion of the rubber outsole and allowing said first layer of PU adhesive to dry;

c) applying a second layer of PU adhesive over the dried first layer of PU
adhesive and allowing said second layer of PU adhesive to dry;

d) forming, separately, a polyurethane upper by injection molding;

e) setting the rubber outsole and the polyurethane upper in a mold; and, f) forming, via injection molding, a polyurethane midsole between said polyurethane upper and said rubber outsole, said injection molding bonding the polyurethane upper to the polyurethane midsole and activating said polyurethane adhesive to bond the polyurethane midsole to the rubber outsole, thereby forming the article of footwear.
8. The method of claim 7, further including a step of inserting an insole into the footwear after the step of forming the polyurethane midsole.
9. The method of claims 8 or 9, wherein said primer drying step takes place at a temperature from 50°C to 55°C.
10. The method of claims 7-9, wherein said PU adhesive drying steps take place at a temperature from 50°C to 55°C.
11. The method of claims 7-10, further including inserting a removable insole into the article of footwear after completion of said forming step.
12. The method of claims 7-11 further including a step of inserting one or both of a reinforced toe plate and reinforced sole plate into the mold with the rubber outsole and polyurethane upper, such that the toe plate and the sole plate, when present, are integrated into the polyurethane upper and the polyurethane midsole, respectively.
13. The method of claims 7-12, wherein, a polyurethane shaft is formed in addition to the polyurethane upper as part of said step of forming the polyurethane upper, such that the article of footwear is a boot.
14. The method of claims 7-13, further including a step of cleaning and buffing the rubber outsole prior to said step of applying the layer of primer.
15. The method of claims 7-14, wherein the polyurethane midsole is formed from polyurethane of a density different from that of polyurethane used to form the polyurethane upper.
16. The method of claim 15, wherein the polyurethane midsole is formed from a foamed polyurethane with a density higher than that of the polyurethane used to form the polyurethane upper.
CA2641977A 2008-11-12 2008-11-12 Footwear construction and method Active CA2641977C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2641977A CA2641977C (en) 2008-11-12 2008-11-12 Footwear construction and method
US12/615,386 US20100050470A1 (en) 2008-11-12 2009-11-10 Footwear construction and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2641977A CA2641977C (en) 2008-11-12 2008-11-12 Footwear construction and method

Publications (2)

Publication Number Publication Date
CA2641977A1 true CA2641977A1 (en) 2010-04-26
CA2641977C CA2641977C (en) 2012-01-31

Family

ID=41723250

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2641977A Active CA2641977C (en) 2008-11-12 2008-11-12 Footwear construction and method

Country Status (2)

Country Link
US (1) US20100050470A1 (en)
CA (1) CA2641977C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140039105A1 (en) * 2011-12-27 2014-02-06 Hee-Dae Park Method of manufacturing footwear using adhesive films and composite of adhesive films

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9272391B2 (en) 2011-05-25 2016-03-01 Nike, Inc. Sodium bicarbonate puck cleaning and painting
CN103085217B (en) * 2011-10-27 2014-12-10 余志勇 Manufacturing method of shoes and shoes manufactured by same
WO2013081980A1 (en) 2011-11-30 2013-06-06 Lacrosse Footwear, Inc. Polyurethane injected boot assembly and associated manufacturing method
USD712638S1 (en) 2011-11-30 2014-09-09 Lacrosse Footwear, Inc. Boot
US10016011B2 (en) 2012-01-27 2018-07-10 Fuerst Group, Inc. Injected footwear
US10299532B2 (en) * 2012-11-14 2019-05-28 David Cherosky Water-proof protective shoe covering
TWI583539B (en) * 2013-01-15 2017-05-21 The method of forming the shoe and the finished product thereof
US10362835B2 (en) 2014-06-25 2019-07-30 Fuerst Group, Inc. Strobel lasted injected footwear
CN104886880A (en) * 2015-05-22 2015-09-09 天津贝迪安全设备有限公司 Circular-disc rubber and polyurethane double-density upper-integrated shoe sole forming assembly line and machining method thereof
USD781030S1 (en) 2015-10-15 2017-03-14 Lacrosse Footwear, Inc. Boot
USD844944S1 (en) * 2016-04-06 2019-04-09 Hevea B.V. Boot
CN106263229A (en) * 2016-10-13 2017-01-04 陈茂双 Comprehensive parcel, waterproof snow boots and production technology thereof
US20180206597A1 (en) * 2017-01-26 2018-07-26 Tingley Rubber Corporation Boots With Gusset
USD986570S1 (en) 2019-10-11 2023-05-23 Target Brands, Inc. Footwear
USD934547S1 (en) 2019-10-11 2021-11-02 Target Corporation Outsole tread
USD966667S1 (en) 2019-10-11 2022-10-18 Target Brands, Inc. Footwear

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3098239A (en) * 1961-01-18 1963-07-23 Nader Hugo Otto Max Prosthetic foot
FR2358891A1 (en) * 1976-07-22 1978-02-17 Yamanouchi Pharma Co Ltd HETEROCYCLIC COMPOUNDS CONTAINING NITROGEN, USED AS ANALGESIC AND ANTI-INFLAMMATORY AGENTS
GB2060350A (en) * 1979-07-19 1981-05-07 Orme Polymer Eng Ltd Safety footwear
DE3309777C2 (en) * 1983-03-18 1986-03-13 Otto Bock, Orthopaedische Industrie Kg, 3428 Duderstadt Artificial foot
US4748749A (en) * 1986-11-14 1988-06-07 Michael Colvard Walking boot/ski gaiter combination particularly useful for downhill skiing
US5784737A (en) * 1992-08-26 1998-07-28 Yoshitaka Tsuji Folding shoes and process for manufacturing the same
US6568101B1 (en) * 1998-06-03 2003-05-27 Mark C. Jansen Softspike overshoes
US20040020077A1 (en) * 2002-10-25 2004-02-05 Lacrosse Footwear, Inc. Rubber footwear with neoprene layer
FR2849994B1 (en) * 2003-01-17 2005-10-14 Salomon Sa INTERNAL SOLE
US7444766B2 (en) * 2004-10-12 2008-11-04 Rocky Brands Wholesale Llc Footwear with enhanced cushioning
US7347012B2 (en) * 2005-07-15 2008-03-25 The Timberland Company Shoe with lacing
US20070107257A1 (en) * 2005-11-11 2007-05-17 Columbia Sportswear North America, Inc. Multi-material molded shell for footwear
CA2627262C (en) * 2008-03-27 2014-05-13 Paul Hubner Three-piece footwear

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140039105A1 (en) * 2011-12-27 2014-02-06 Hee-Dae Park Method of manufacturing footwear using adhesive films and composite of adhesive films
US8969453B2 (en) * 2011-12-27 2015-03-03 Hee-Dae Park Method of manufacturing footwear using adhesive films and composite of adhesive films

Also Published As

Publication number Publication date
CA2641977C (en) 2012-01-31
US20100050470A1 (en) 2010-03-04

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