CA2177662A1 - Paint brush with co-injection molded handle and method of making same - Google Patents

Paint brush with co-injection molded handle and method of making same

Info

Publication number
CA2177662A1
CA2177662A1 CA002177662A CA2177662A CA2177662A1 CA 2177662 A1 CA2177662 A1 CA 2177662A1 CA 002177662 A CA002177662 A CA 002177662A CA 2177662 A CA2177662 A CA 2177662A CA 2177662 A1 CA2177662 A1 CA 2177662A1
Authority
CA
Canada
Prior art keywords
elastomeric material
handle
paint brush
injection molded
polyolefin
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
CA002177662A
Other languages
French (fr)
Other versions
CA2177662C (en
Inventor
Richard L. Barker
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.)
Wooster Brush Co
Original Assignee
Wooster Brush Co
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 Wooster Brush Co filed Critical Wooster Brush Co
Publication of CA2177662A1 publication Critical patent/CA2177662A1/en
Application granted granted Critical
Publication of CA2177662C publication Critical patent/CA2177662C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/383—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using spreading devices mounted in the mould, in front of the feed opening
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A46B5/026—Grips or handles having a nonslip section
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0461—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C45/2708—Gates
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/30—Flow control means disposed within the sprue channel, e.g. "torpedo" construction
    • 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
    • B29L2031/46—Knobs or handles, push-buttons, grips
    • B29L2031/463—Grips, handles

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Brushes (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Coating Apparatus (AREA)

Abstract

A paint brush handle has an outer layer of a comfortable, relatively soft elastomeric material that surrounds a rigid core of foamed polyolefin. The handle is made using a co-injection process in which a mold cavity is first coated by an initial partial shot of the elastomeric material and then filled by injecting more elastomeric material and polyolefin material containing a foaming agent simultaneously. The simultaneous shot of these materials is achieved by injecting the materials through a single inlet passage into the mold cavity in which the flows are concentric, with the elastomeric material surrounding the polyolefin material. The ferrule is attached to the handle using nails or other suitable fasteners which penetrate into the rigid inner core.
CA002177662A 1995-08-17 1996-05-29 Paint brush with co-injection molded handle and method of making same Expired - Lifetime CA2177662C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/516,214 1995-08-17
US08/516,214 US5920943A (en) 1995-08-17 1995-08-17 Paint brush with co-injection molded handle and method of making same

Publications (2)

Publication Number Publication Date
CA2177662A1 true CA2177662A1 (en) 1997-02-18
CA2177662C CA2177662C (en) 2006-03-21

Family

ID=24054609

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002177662A Expired - Lifetime CA2177662C (en) 1995-08-17 1996-05-29 Paint brush with co-injection molded handle and method of making same

Country Status (3)

Country Link
US (2) US5920943A (en)
CA (1) CA2177662C (en)
MX (1) MX9602815A (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2182235C (en) * 1995-08-10 2006-02-28 William W. Barton Brush with improved grip construction and method of manufacture thereof
IT1295288B1 (en) * 1997-10-07 1999-05-04 John Palmer Corp PROCEDURE FOR CREATING A MULTI-COLOR HANDLE FOR BRUSHES AND MULTI-COLOR HANDLE FOR BRUSHES
US6408474B1 (en) 1999-08-12 2002-06-25 The Wooster Brush Company Paint brush with two component brush handle and method of making same
US6726868B1 (en) * 2000-03-03 2004-04-27 A. Richard, S.E.N.C. Double molding process whereby a sign is produced on a product while said product is molded
EP1147724A3 (en) * 2000-03-30 2003-06-04 Newell Operating Company Easy grip paint applicator
US6749788B1 (en) 2000-10-26 2004-06-15 The Gillette Company Method and apparatus for making a shaving razor handle
AU2002325560B8 (en) * 2001-07-24 2006-01-12 Lg Electronics Inc. Structure of handgrip and method for fabricating the same
US7540844B2 (en) * 2003-08-20 2009-06-02 Becton, Dickinson And Company Cell scraper
US7235200B2 (en) * 2003-10-09 2007-06-26 Lear Corporation Foamed core process for large cross-sections of grab handles
DE202004015133U1 (en) * 2004-09-27 2004-11-25 C. Hilzinger-Thum Schleif- Und Poliermittelwerk Gmbh brush
US20060261191A1 (en) * 2005-05-02 2006-11-23 Tsung-Chieh Chang Shower head assembly
US20060248669A1 (en) * 2005-05-03 2006-11-09 Royal Brush Manufacturing, Inc. Paint brush
GB0521177D0 (en) * 2005-10-18 2005-11-23 Harris L G & Co Ltd Handle for a paint brush
AT8374U1 (en) * 2005-10-24 2006-07-15 Komperdell Sportartikel Gmbh PART TO BE DETERMINED BY THE HAND AND METHOD FOR MANUFACTURING THEM
KR100820076B1 (en) * 2007-01-28 2008-04-07 (주)씨피아이케이알 Mascara brush
US7913348B2 (en) * 2007-07-06 2011-03-29 Proform Technologies, Inc. Paint brush with increased ferrule paint reservoir
US8171594B2 (en) * 2007-07-06 2012-05-08 Proform Technologies, Inc. Paint brush with protective polymer coating
US8091172B2 (en) * 2007-07-06 2012-01-10 Proform Technologies, Inc. Paint brush with reinforced ferrule construction
US9566602B2 (en) * 2007-10-18 2017-02-14 Anna MacCormick Stain and painting tool
FR2936728B1 (en) 2008-10-08 2010-12-10 Nespoli Engineering Kereskedelmi Korlatolt Fedelossegu Tarsagag Kft HANDLE FOR MANUAL TOOL AND TOOL SO EQUIPPED
US8927083B2 (en) * 2009-01-19 2015-01-06 Mack Molding Company Handle and method of fabricating a handle for a medical device
USD667716S1 (en) * 2011-08-18 2012-09-25 Matthew Page Tool handle
JP2015511193A (en) * 2012-02-24 2015-04-16 ザ プロクター アンド ギャンブルカンパニー High thermal conductivity co-injection molding system
US9155381B2 (en) 2012-09-19 2015-10-13 Easy Pro Products, Llc Guides for painting
EP2727493A1 (en) 2012-11-05 2014-05-07 The Gillette Company Toothbrush comprising elastomeric cleaning elements over-molded with a harder plastic and method for producing the same
US9956815B2 (en) 2014-07-02 2018-05-01 Modern Packaging Llc Overmolded cutlery articles
USD741606S1 (en) 2015-04-09 2015-10-27 Work Tools International, Inc. Silicone-handled paintbrush
US10111786B2 (en) 2015-04-10 2018-10-30 First Quality Hygienic, Inc. Tampon applicator including beveled portion
US10112329B2 (en) 2015-11-02 2018-10-30 Modern Packaging Llc Overmolded disposable cutlery articles
US20170311709A1 (en) * 2016-05-01 2017-11-02 David McInerney Paint brush with clip attachment
DE102018115291A1 (en) * 2018-06-26 2020-01-02 Kraussmaffei Technologies Gmbh Method of manufacturing a composite part
USD1019158S1 (en) 2022-06-22 2024-03-26 The Wooster Brush Company Paint brush with integrated grip pad

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US2426315A (en) * 1943-09-25 1947-08-26 Us Rubber Co Static free brush
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US2508799A (en) * 1944-12-28 1950-05-23 Pittsburgh Plate Glass Co Paintbrush and synthetic bristles for the same
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Also Published As

Publication number Publication date
US5800751A (en) 1998-09-01
US5920943A (en) 1999-07-13
MX9602815A (en) 1997-06-28
CA2177662C (en) 2006-03-21

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20160530