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US20130224441A1 - Aluminum-plastic composite structure - Google Patents

Aluminum-plastic composite structure Download PDF

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Publication number
US20130224441A1
US20130224441A1 US13/853,071 US201313853071A US2013224441A1 US 20130224441 A1 US20130224441 A1 US 20130224441A1 US 201313853071 A US201313853071 A US 201313853071A US 2013224441 A1 US2013224441 A1 US 2013224441A1
Authority
US
United States
Prior art keywords
aluminum
plastic
composite structure
millimeters
micro
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.)
Abandoned
Application number
US13/853,071
Inventor
Shien-Cheng Kuo
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.)
Hon Hai Precision Industry Co Ltd
Original Assignee
Hon Hai Precision Industry Co Ltd
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 Hon Hai Precision Industry Co Ltd filed Critical Hon Hai Precision Industry Co Ltd
Priority to US13/853,071 priority Critical patent/US20130224441A1/en
Assigned to HON HAI PRECISION INDUSTRY CO., LTD. reassignment HON HAI PRECISION INDUSTRY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KUO, SHIEN-CHENG
Publication of US20130224441A1 publication Critical patent/US20130224441A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material
    • Y10T29/49982—Coating
    • Y10T29/49984—Coating and casting
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24521—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness with component conforming to contour of nonplanar surface
    • Y10T428/24537—Parallel ribs and/or grooves
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer

Definitions

  • the present disclosure relates generally to an aluminum-plastic composite structure.
  • Many aluminum-plastic composite structures used in electronic devices include a metal member and a plastic member fixed on the metal member.
  • the plastic member is adhered on the metal member by glue.
  • strength of the bond formed using the glue will decrease over time, and may result in detachment of the metal member from the plastic member.
  • FIG. 1 is a cross section of an embodiment of an aluminum-plastic composite structure.
  • FIG. 2 is a flowchart of a method for making the aluminum-plastic composite structure.
  • an embodiment of an aluminum-plastic composite structure 200 includes an aluminum portion 21 and a plastic portion 23 integrally formed on the aluminum portion 21 by insert-molding technology.
  • the aluminum portion 21 includes a joining surface 210 .
  • the aluminum portion 21 includes a plurality of micro grooves 211 in the joining surface 210 made by using ultraviolet lithography.
  • a width of each micro groove 211 is in a range from about 0.02 millimeters to about 0.05 millimeters, and a depth of each micro groove 211 is in a range from about 0.2 millimeters to about 0.25 millimeters.
  • the plastic material can be injected effectively into the micro grooves 211 to enhance strength of the bond formed between the aluminum portion 21 and the plastic portion 23 .
  • a ratio of the depth to the width is equal to or greater than about 10.
  • the aluminum portion 21 is a sheet, and the depth of the micro grooves 211 is less than about 80% of the thickness of the aluminum portion 21 where the micro grooves 211 are defined to maintain bonding strength of the aluminum portion 21 with respect to the plastic portion 23 .
  • the aluminum portion 21 may be made of aluminum or aluminum alloy, the micro grooves 211 may be easily defined because of the cubic crystal structure of aluminum.
  • step 201 an aluminum portion 21 is provided, and the aluminum portion 21 includes a joining surface 210 ;
  • a plurality of micro grooves 211 are formed in the joining surface 210 by ultraviolet lithography, a width of each micro groove is in a range from about 0.02 mm to about 0.05 mm; a depth of each micro groove is in a range from 0.2 mm to 0.25 mm.
  • the process of ultraviolet lithography for defining the micro grooves 211 includes the following steps:
  • Photoresist is covered on the joining surface 210 of the aluminum portion 21 .
  • An optical mask is formed on the joining surface 210 of the aluminum portion 21 , and the aluminum portion 21 is placed in an ultraviolet exposure machine for UV exposure.
  • the aluminum portion 21 is etched in an etching fluid in a cavity to form the micro grooves 211 , in which a size of the micro groove is being controlled by adjusting the concentration of the etching fluid and/or an etching duration.
  • step 203 the aluminum portion 21 is positioned in a mold, and then the melt plastic material is injected on the aluminum portion 21 to form a plastic portion 23 .
  • the plastic material is injected and substantially filling into the micro grooves 211 , thus the plastic portion 23 can be bonded or fixed on the joining surface 210 of the aluminum portion 21 .
  • step 204 the plastic portion 23 is cooled to form the aluminum-plastic composite structure 200 .
  • the aluminum-plastic composite structure 200 defines the micro grooves 211 at the joining surface 210 of the aluminum portion 21 in which the plastic material is embedded, thus firmly fixing or bonding the plastic portion 23 on the aluminum portion 21 , and increasing the bond strength between the aluminum portion 21 and the plastic portion 23 .
  • the aluminum-plastic composite structure 200 also has a reduced thickness because no latching mechanism is included.

Landscapes

  • Laminated Bodies (AREA)
  • ing And Chemical Polishing (AREA)
  • Casings For Electric Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

An aluminum-plastic composite structure includes an aluminum portion and a plastic portion. The aluminum portion defines a plurality of micro grooves by ultraviolet lithography. The plastic portion is integrally formed on the aluminum portion and substantially filling in the micro grooves. A width of each micro groove is in a range from 0.02 millimeters to 0.05 millimeters. A depth of each micro groove is in a range from 0.2 millimeters to 0.25 millimeters.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • The present application is a divisional application of U.S. patent application Ser. No. 13/074,134, filed on Mar. 29, 2011.
    • BACKGROUND
  • 1. Technical Field
  • The present disclosure relates generally to an aluminum-plastic composite structure.
  • 2. Description of Related Art
  • Many aluminum-plastic composite structures used in electronic devices include a metal member and a plastic member fixed on the metal member. The plastic member is adhered on the metal member by glue. However, strength of the bond formed using the glue will decrease over time, and may result in detachment of the metal member from the plastic member.
  • Therefore, there is room for improvement within the art.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views.
  • FIG. 1 is a cross section of an embodiment of an aluminum-plastic composite structure.
  • FIG. 2 is a flowchart of a method for making the aluminum-plastic composite structure.
    •  DETAILED DESCRIPTION
  • Referring to FIG. 1, an embodiment of an aluminum-plastic composite structure 200 includes an aluminum portion 21 and a plastic portion 23 integrally formed on the aluminum portion 21 by insert-molding technology. The aluminum portion 21 includes a joining surface 210. The aluminum portion 21 includes a plurality of micro grooves 211 in the joining surface 210 made by using ultraviolet lithography. A width of each micro groove 211 is in a range from about 0.02 millimeters to about 0.05 millimeters, and a depth of each micro groove 211 is in a range from about 0.2 millimeters to about 0.25 millimeters. Thus, the plastic material can be injected effectively into the micro grooves 211 to enhance strength of the bond formed between the aluminum portion 21 and the plastic portion 23. In this embodiment, a ratio of the depth to the width is equal to or greater than about 10. In the illustrated embodiment, the aluminum portion 21 is a sheet, and the depth of the micro grooves 211 is less than about 80% of the thickness of the aluminum portion 21 where the micro grooves 211 are defined to maintain bonding strength of the aluminum portion 21 with respect to the plastic portion 23. The aluminum portion 21 may be made of aluminum or aluminum alloy, the micro grooves 211 may be easily defined because of the cubic crystal structure of aluminum.
  • Also referring to FIG. 2, a method for making aluminum-plastic composite structure follows.
  • In step 201, an aluminum portion 21 is provided, and the aluminum portion 21 includes a joining surface 210;
  • In step 202, a plurality of micro grooves 211 are formed in the joining surface 210 by ultraviolet lithography, a width of each micro groove is in a range from about 0.02 mm to about 0.05 mm; a depth of each micro groove is in a range from 0.2 mm to 0.25 mm. The process of ultraviolet lithography for defining the micro grooves 211 includes the following steps:
  • (1) Photoresist is covered on the joining surface 210 of the aluminum portion 21.
  • (2) An optical mask is formed on the joining surface 210 of the aluminum portion 21, and the aluminum portion 21 is placed in an ultraviolet exposure machine for UV exposure.
  • (3) The aluminum portion 21 is etched in an etching fluid in a cavity to form the micro grooves 211, in which a size of the micro groove is being controlled by adjusting the concentration of the etching fluid and/or an etching duration.
  • In step 203, the aluminum portion 21 is positioned in a mold, and then the melt plastic material is injected on the aluminum portion 21 to form a plastic portion 23. The plastic material is injected and substantially filling into the micro grooves 211, thus the plastic portion 23 can be bonded or fixed on the joining surface 210 of the aluminum portion 21.
  • In step 204, the plastic portion 23 is cooled to form the aluminum-plastic composite structure 200.
  • The aluminum-plastic composite structure 200 defines the micro grooves 211 at the joining surface 210 of the aluminum portion 21 in which the plastic material is embedded, thus firmly fixing or bonding the plastic portion 23 on the aluminum portion 21, and increasing the bond strength between the aluminum portion 21 and the plastic portion 23.
  • The aluminum-plastic composite structure 200 also has a reduced thickness because no latching mechanism is included.
  • It is believed that the present embodiments and their advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the disclosure or sacrificing all of its material advantages.

Claims (3)

What is claimed is:
1. An aluminum-plastic composite structure comprising;
an aluminum portion, the aluminum portion defining a plurality of micro grooves by ultraviolet lithography;
a plastic portion, the plastic portion integrally formed on the aluminum portion and substantially filling in the micro grooves; wherein a width of each micro groove is in a range from about 0.02 to about 0.05 millimeters, and a depth of each micro groove is in a range from about 0.2 millimeters to about 0.25 millimeters.
2. The aluminum-plastic composite structure of claim 1, wherein a ratio of the depth to the width is equal to or greater than about 10.
3. The aluminum-plastic composite structure of claim 1, wherein the aluminum portion is a sheet, the depth of each micro groove is equal to or less than about 80% of the thickness of the aluminum portion where the micro groove are defined.
US13/853,071 2010-06-30 2013-03-29 Aluminum-plastic composite structure Abandoned US20130224441A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/853,071 US20130224441A1 (en) 2010-06-30 2013-03-29 Aluminum-plastic composite structure

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201010214877.2A CN102310602B (en) 2010-06-30 2010-06-30 Aluminium-plastic composite structure and manufacture method thereof
CN201010214877.2 2010-06-30
US13/074,134 US8429807B2 (en) 2010-06-30 2011-03-29 Aluminum-plastic composite structure
US13/853,071 US20130224441A1 (en) 2010-06-30 2013-03-29 Aluminum-plastic composite structure

Related Parent Applications (1)

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US13/074,134 Division US8429807B2 (en) 2010-06-30 2011-03-29 Aluminum-plastic composite structure

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Also Published As

Publication number Publication date
US20120003444A1 (en) 2012-01-05
CN102310602B (en) 2014-03-26
US8429807B2 (en) 2013-04-30
CN102310602A (en) 2012-01-11

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Legal Events

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AS Assignment

Owner name: HON HAI PRECISION INDUSTRY CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KUO, SHIEN-CHENG;REEL/FRAME:030111/0778

Effective date: 20130318

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION