US20060144014A1 - Plastic panel - Google Patents

Plastic panel Download PDF

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Publication number
US20060144014A1
US20060144014A1 US11/325,866 US32586606A US2006144014A1 US 20060144014 A1 US20060144014 A1 US 20060144014A1 US 32586606 A US32586606 A US 32586606A US 2006144014 A1 US2006144014 A1 US 2006144014A1
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US
United States
Prior art keywords
bonding
adhesive
plastic panel
panel
bonding groove
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
US11/325,866
Inventor
In-Se Yoon
Hyung-Jun Ahn
Hee-Deog Kim
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.)
LG Chem Ltd
Original Assignee
LG Chem 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 LG Chem Ltd filed Critical LG Chem Ltd
Assigned to LG CHEM, LTD. reassignment LG CHEM, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AHN, HYUNG-JUN, KIM, HEE-DEOG, YOON, IN-SE
Publication of US20060144014A1 publication Critical patent/US20060144014A1/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
    • B32B3/02—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 features of form at particular places, e.g. in edge regions
    • B32B3/06—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 features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • B29C66/12821—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments
    • B29C66/12822—Stepped joint cross-sections comprising at least one overlap joint-segment comprising at least two overlap joint-segments comprising at least three overlap joint-segments
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1286—Stepped joint cross-sections comprising at least one bevelled joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D27/00—Connections between superstructure or understructure sub-units
    • B62D27/02—Connections between superstructure or understructure sub-units rigid
    • B62D27/026—Connections by glue bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04—Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/20—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of plastics
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7829—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being integral with at least one of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30321—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of protrusions belonging to at least one of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29L2024/00—Articles with hollow walls
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3055—Cars
    • 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
    • B29L2031/724—Doors

Definitions

  • the present invention relates to a plastic panel, and more particularly, to a plastic panel which comprises inner and outer panels wherein a bonding groove to be coated with an adhesive is formed on any one of the inner and outer panels.
  • a panel is made of a single plate.
  • two panels i.e. an inner panel and an outer panel, are bonded to each other in order to contain the necessary articles between the inner and outer panels.
  • a bonded panel composed of inner and outer panels is typically used as a tail gate of a vehicle.
  • Members for opening/closing and locking a door, members for operating a wiper and a variety of reinforcing members for installing the wiper and aforementioned members are provided in the vehicle tail gate.
  • a hinge used for opening/closing the door and a hinge reinforcement thereof are provided at an upper end of the tail gate; a space for installing a wiper motor of a wiper system and a wiper motor bracket thereof are provided at the center of a lower portion of the vehicle tail gate; and a latch bracket used for mounting a latch for opening/closing the tail gate is also provided at the center of a lower end of the tail gate. Accordingly, bonding surfaces are generally formed along an edge of the inner and outer panels between which a space is thus formed.
  • the inner and outer panels of the vehicle tail gate are generally manufactured from a steel sheet.
  • the two steel sheets should be joined and assembled through a spot welding method, and thus, a thickness of the steel sheet should be increased up to a certain thickness. Therefore, this leads to the increase of overall weight and production costs of the tail gate. Accordingly, the steel sheet for use in the tail gate has been recently replaced with a plastic sheet.
  • the inner and outer panels are bonded and assembled with each other using the conventional adhesive. Since the bonding surface of the currently available inner and outer panels is planar (See FIG. 2 ), there is a problem in that the used adhesive leaks out of the bonded panels. In particular, since the adhesive is applied onto the planar bonding surface, the adhesive, if it has certain fluidity, inevitably leaks out from the panels after applied on the bonding surface. This problem can occur when the adhesive is manually applied and also even when an accurate amount of adhesive is applied by using adhesive coating equipment.
  • the adhesive is excessively spent more than is necessary and an additional process for removing the adhesive leaked between the inner and outer panels is required. Consequently, there are some problems that it takes a long time to manufacture the panel and a manufacturing cost is increased.
  • An object of the present invention is to provide a plastic panel in which a bonding groove to be coated with an adhesive is formed on an inner or outer panel to prevent the adhesive from leaking to the outside.
  • Another object of the present invention is to provide a plastic panel in which an adhesive can be applied at a uniform thickness to correct positions by using a bonding groove formed on the inner or outer panel serving as a guide even when the adhesive is manually applied.
  • a further object of the present invention is to provide a plastic panel wherein even when an adhesive with certain fluidity is used, the adhesive does not leak out between the inner and outer panels, whereby post-processing work for enhancing the external appearance is not required, manufacturing time and costs can be reduced, and a bonding force can be increased due to an increased bonding area.
  • a plastic panel comprising inner and outer panels wherein a bonding groove is formed on any one of the inner and outer panels.
  • the bonding groove formed on the inner or outer panel of the plastic panel is formed on the inner panel to maintain strength of the outer panel.
  • a bonding groove is formed on any one of the inner and outer panels, while a bonding surface is shaped as a protrusion corresponding to a shape of the bonding groove.
  • the bonding groove or bonding surface may be formed with a stopper.
  • the bonding groove is bonded to the bonding surface of the inner or outer panel, it is possible to prevent the applied adhesive from leaking to the outside. Further, since the bonding groove formed on the inner or outer panel serves as a guide when the adhesive is applied, the adhesive can be applied at a uniform thickness to correct positions even though it is manually applied. Furthermore, since a stopper and additional space are provided on the bonding groove or bonding surface, even an adhesive with certain fluidity cannot leak out between the inner and outer panels. Therefore, the post-processing work for enhancing the external appearance is not required, the manufacturing time and costs can be reduced, and the bonding force can be increased due to the increased bonding area.
  • FIG. 1 is a partial perspective view showing a state where a tail gate is mounted to a vehicle.
  • FIG. 2 is a sectional view of a related art plastic panel.
  • FIG. 3 is a sectional view showing a bonded structure of a plastic panel according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of the plastic panel according to the embodiment of the present invention in which stoppers are employed.
  • FIGS. 5 to 7 are sectional views illustrating a process of assembling the plastic panel according to the embodiment of the present invention.
  • Tail gate 2 Inner panel 3: Outer panel 4: Adhesive 5: Stopper 6: Additional space 7: Bonding Groove 8: Protrusion [Best Mode]
  • FIG. 1 is a partial perspective view showing a state where a tail gate is mounted to a vehicle
  • FIG. 2 is a sectional view of a related art plastic panel
  • FIG. 3 is a sectional view showing a bonded structure of a plastic panel according to an embodiment of the present invention
  • FIG. 4 is a perspective view showing a state where stoppers are of the plastic panel according to the embodiment of the present invention in which stoppers are employed
  • FIGS. 5 to 7 are sectional views illustrating a process of assembling the plastic panel according to the embodiment of the present invention.
  • Inner and outer panels 2 and 3 constituting the plastic panel of the present invention can be manufactured from sheet molding compounds (SMC), glass mat thermoplastics (GMT), polyethylene terephthalate (PET), PA, PC and the like as a raw material by means of the general compression molding method or injection molding method.
  • SMC sheet molding compounds
  • GTT glass mat thermoplastics
  • PET polyethylene terephthalate
  • PA PA
  • PC PC
  • the inner and outer panels 2 may be the same as or different from each other in view of thickness.
  • At least one bonding groove 7 in which an adhesive is applied is formed on any one of the inner and outer panels 2 and 3 .
  • the other of the inner and outer panels 2 and 3 in which the bonding groove is not formed, is formed with a bonding surface at a position corresponding to the bonding groove 7 such that the bonding surface can be bonded to the bonding groove using the adhesive 4 applied to the bonding groove.
  • the bonding surface may be formed in the shape of a plane or protrusion.
  • the bonding surface is shaped as a protrusion.
  • the bonding surface it is more preferred that the bonding surface be shaped as a protrusion 8 corresponding to a shape of the bonding groove.
  • a space with a certain interval (gap) be formed between a bottom surface of the protrusion and a floor surface of the bonding groove such that an adhesive can be injected (applied) at a proper thickness in the gap of the space.
  • the inner and outer panels are generally assembled into the plastic panel by means of a chemical bonding method using an adhesive.
  • the plastic panel of the present invention is manufactured in such a manner that the adhesive 4 is applied to the bonding groove 7 formed along an edge of the inner or outer panel 2 or 3 and the two panels are then coupled and bonded to each other.
  • the inner and outer panels 2 and 3 of the plastic panel according to the present invention have one or two or more bonding grooves having various sectional shapes such that a bonding strength higher than a certain level can be maintained after the inner and outer panels have been bonded to each other.
  • a width and depth of the bonding groove can be determined and formed such that the adhesive can be applied to the bonding groove to a suitable bonding area and thickness enough to keep bonding strength to the certain level or more.
  • the bonding area and thickness by which the bonding strength can be maintained after two panels have been bonded may vary according to the kinds of adhesive. However, once the adhesive is selected, at least one bonding groove 7 with a width and depth suitable for the selected adhesive can be formed.
  • a bonding area and thickness of the bonding groove suitable for the kind of selected adhesive is determined, at least one bonding groove 7 and the corresponding protrusion, if necessary, enough to ensure the suitable width and thickness are manufactured. Then, a volume of an adhesive to be applied is calculated and the adhesive as much as the calculated volume is applied to the bonding groove. Therefore, the two panels can be coupled and bonded to each other. At this time, the amount of the adhesive applied is set slightly smaller than the volume of the bonding groove 7 formed between the inner and outer panels, and thus, it is possible to prevent the applied adhesive from leaking out between the bonded panels.
  • an additional space or spaces 6 are further formed at one or both sides of the bonding groove by extending the bonding groove 7 toward the one or both sides. Therefore, even though the adhesive is injected in the bonding groove more than the volume of the bonding groove, it is possible to prevent the applied adhesive from leaking out between the bonded panels.
  • the additional spaces are formed at both sides of the bonding groove, their widths can be different from each other.
  • the additional space 6 can be formed to have the same depth (See FIGS. 3 to 7 ). However, the depth of the additional space can be gradually decreased away form the bonding groove such that the bonding area per an amount of adhesive applied can be increased.
  • a stopper can be configured (formed) on the bonding groove or the bonding surface corresponding to the bonding groove to prevent an incomplete bonding state from occurring at the bonded region or prevent the thickness of the applied adhesive from being decreased when the inner and outer panels are pressed and then bonded to each other.
  • a thickness (height) of the stopper be equal to the gap between the floor surface of the bonding groove and the bonding surface.
  • the height may be slightly less than the gap.
  • a width enough to withstand a bonding pressure applied when the inner and outer panels are bonded and coupled to each other is sufficient for the stopper. Accordingly, it is preferred that the width of the stopper be formed as narrow as possible.
  • the stoppers 5 can be formed on the bonding groove or bonding surface at regular intervals (See FIG. 4 ). Alternatively, the stopper 5 can be formed to continuously extend along the bonding groove or bonding surface (not shown).
  • the stopper 5 can be separately manufactured and then placed on the bonding surface or bottom surface of the bonding groove 7 .
  • the stopper can be formed integrally with the panel.
  • the stopper 5 Since the stopper 5 is formed, the bonding groove and bonding surface cannot be further pressed. Thus, the two panels can be bonded to each other with a predetermined pressure. Due to the aforementioned structure of the present invention, therefore, an amount of adhesive used more than necessary can be minimized, and the conventional problem in that the fluid adhesive leaks out between the inner and outer panels and contaminates the exterior of the plastic panel can also be solved. Furthermore, a bonding force can be maximized.
  • the plastic panel of the present invention can be usefully applied to a vehicle door, in particular, a panel for a tail gate.
  • the present invention has the following advantages. That is, since the bonding groove is bonded to the bonding surface of the inner or outer panel, it is possible to prevent the applied adhesive from leaking to the outside. Further, since the bonding groove formed on the inner or outer panel serves as a guide when the adhesive is applied, the adhesive can be applied at a uniform thickness to correct positions even though it is manually applied. Furthermore, since a stopper and additional space are provided on the bonding groove or bonding surface, even an adhesive with certain fluidity cannot leak out between the inner and outer panels. Therefore, the post-processing work for enhancing the external appearance is not required, the manufacturing time and costs can be reduced, and the bonding force can be increased due to the increased bonding area.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Body Structure For Vehicles (AREA)
  • Superstructure Of Vehicle (AREA)

Abstract

The present invention relates to a plastic panel, and more particularly, to a plastic panel which comprises inner and outer panels wherein a bonding groove to be coated with an adhesive is formed on any one of the inner and outer panels. According to a preferred embodiment of the present invention, the bonding groove is formed on any one of the inner and outer panels, while a protrusion is formed on a bonding surface of the other of the inner and outer panels. Accordingly, since the bonding groove is bonded to the bonding surface of the inner or outer panel, the bonding groove can serve as a guide when the adhesive is applied. Thus, the adhesive can be applied at a uniform thickness to correct positions even though it is manually applied, and even an adhesive with certain fluidity can be prevented from leaking to the outside. Therefore, there are advantages in that the post-processing work for enhancing the external appearance is not required, the manufacturing time and costs can be reduced, and the bonding force can be increased due to the increased bonding area.

Description

    TECHNICAL FIELD
  • The present invention relates to a plastic panel, and more particularly, to a plastic panel which comprises inner and outer panels wherein a bonding groove to be coated with an adhesive is formed on any one of the inner and outer panels.
    • BACKGROUND ART
  • In general, a panel is made of a single plate. However, in the case of a vehicle door in which it is necessary to contain some articles, two panels, i.e. an inner panel and an outer panel, are bonded to each other in order to contain the necessary articles between the inner and outer panels. In particular, a bonded panel composed of inner and outer panels is typically used as a tail gate of a vehicle. Members for opening/closing and locking a door, members for operating a wiper and a variety of reinforcing members for installing the wiper and aforementioned members are provided in the vehicle tail gate. For example, a hinge used for opening/closing the door and a hinge reinforcement thereof are provided at an upper end of the tail gate; a space for installing a wiper motor of a wiper system and a wiper motor bracket thereof are provided at the center of a lower portion of the vehicle tail gate; and a latch bracket used for mounting a latch for opening/closing the tail gate is also provided at the center of a lower end of the tail gate. Accordingly, bonding surfaces are generally formed along an edge of the inner and outer panels between which a space is thus formed.
  • The inner and outer panels of the vehicle tail gate are generally manufactured from a steel sheet. In such a case, however, the two steel sheets should be joined and assembled through a spot welding method, and thus, a thickness of the steel sheet should be increased up to a certain thickness. Therefore, this leads to the increase of overall weight and production costs of the tail gate. Accordingly, the steel sheet for use in the tail gate has been recently replaced with a plastic sheet.
  • In the case of the plastic panel, such as the vehicle tail gate, manufactured by coupling two inner and outer panels with each other, the inner and outer panels are bonded and assembled with each other using the conventional adhesive. Since the bonding surface of the currently available inner and outer panels is planar (See FIG. 2), there is a problem in that the used adhesive leaks out of the bonded panels. In particular, since the adhesive is applied onto the planar bonding surface, the adhesive, if it has certain fluidity, inevitably leaks out from the panels after applied on the bonding surface. This problem can occur when the adhesive is manually applied and also even when an accurate amount of adhesive is applied by using adhesive coating equipment.
  • Accordingly, the adhesive is excessively spent more than is necessary and an additional process for removing the adhesive leaked between the inner and outer panels is required. Consequently, there are some problems that it takes a long time to manufacture the panel and a manufacturing cost is increased.
    • DISCLOSURE
  • [Technical Problem]
  • The present invention is conceived to solve the aforementioned problems of the conventional plastic panel. An object of the present invention is to provide a plastic panel in which a bonding groove to be coated with an adhesive is formed on an inner or outer panel to prevent the adhesive from leaking to the outside.
  • Another object of the present invention is to provide a plastic panel in which an adhesive can be applied at a uniform thickness to correct positions by using a bonding groove formed on the inner or outer panel serving as a guide even when the adhesive is manually applied.
  • A further object of the present invention is to provide a plastic panel wherein even when an adhesive with certain fluidity is used, the adhesive does not leak out between the inner and outer panels, whereby post-processing work for enhancing the external appearance is not required, manufacturing time and costs can be reduced, and a bonding force can be increased due to an increased bonding area.
  • [Technical Solution]
  • According to an aspect of the present invention for achieving the above objects, there is provided a plastic panel, comprising inner and outer panels wherein a bonding groove is formed on any one of the inner and outer panels.
  • Preferably, the bonding groove formed on the inner or outer panel of the plastic panel is formed on the inner panel to maintain strength of the outer panel.
  • More preferably, a bonding groove is formed on any one of the inner and outer panels, while a bonding surface is shaped as a protrusion corresponding to a shape of the bonding groove.
  • The bonding groove or bonding surface may be formed with a stopper.
  • [Advantageous Effects]
  • The plastic panel of the present invention has the following advantages:
  • Since the bonding groove is bonded to the bonding surface of the inner or outer panel, it is possible to prevent the applied adhesive from leaking to the outside. Further, since the bonding groove formed on the inner or outer panel serves as a guide when the adhesive is applied, the adhesive can be applied at a uniform thickness to correct positions even though it is manually applied. Furthermore, since a stopper and additional space are provided on the bonding groove or bonding surface, even an adhesive with certain fluidity cannot leak out between the inner and outer panels. Therefore, the post-processing work for enhancing the external appearance is not required, the manufacturing time and costs can be reduced, and the bonding force can be increased due to the increased bonding area.
    • DESCRIPTION OF DRAWINGS
  • FIG. 1 is a partial perspective view showing a state where a tail gate is mounted to a vehicle.
  • FIG. 2 is a sectional view of a related art plastic panel.
  • FIG. 3 is a sectional view showing a bonded structure of a plastic panel according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of the plastic panel according to the embodiment of the present invention in which stoppers are employed.
  • FIGS. 5 to 7 are sectional views illustrating a process of assembling the plastic panel according to the embodiment of the present invention.
    • EXPLANATION OF REFERENCE NUMERALS FOR DESIGNATING MAIN COMPONENTS IN THE DRAWINGS
  • 1: Tail gate 2: Inner panel
    3: Outer panel 4: Adhesive
    5: Stopper 6: Additional space
    7: Bonding Groove 8: Protrusion

    [Best Mode]
  • Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
  • FIG. 1 is a partial perspective view showing a state where a tail gate is mounted to a vehicle, FIG. 2 is a sectional view of a related art plastic panel, FIG. 3 is a sectional view showing a bonded structure of a plastic panel according to an embodiment of the present invention, FIG. 4 is a perspective view showing a state where stoppers are of the plastic panel according to the embodiment of the present invention in which stoppers are employed, and FIGS. 5 to 7 are sectional views illustrating a process of assembling the plastic panel according to the embodiment of the present invention.
  • Inner and outer panels 2 and 3 constituting the plastic panel of the present invention can be manufactured from sheet molding compounds (SMC), glass mat thermoplastics (GMT), polyethylene terephthalate (PET), PA, PC and the like as a raw material by means of the general compression molding method or injection molding method. The inner and outer panels 2 may be the same as or different from each other in view of thickness.
  • In the plastic panel of the present invention, at least one bonding groove 7 in which an adhesive is applied is formed on any one of the inner and outer panels 2 and 3.
  • The other of the inner and outer panels 2 and 3, in which the bonding groove is not formed, is formed with a bonding surface at a position corresponding to the bonding groove 7 such that the bonding surface can be bonded to the bonding groove using the adhesive 4 applied to the bonding groove.
  • The bonding surface may be formed in the shape of a plane or protrusion. Preferably, the bonding surface is shaped as a protrusion. In a case where the bonding surface is shaped as a protrusion, it is more preferred that the bonding surface be shaped as a protrusion 8 corresponding to a shape of the bonding groove. Even in such a case, it is preferred that a space with a certain interval (gap) be formed between a bottom surface of the protrusion and a floor surface of the bonding groove such that an adhesive can be injected (applied) at a proper thickness in the gap of the space.
  • Since the plastic panel obtained by mechanically coupling the inner and outer panels 2 and 3 with each other using a bolt and nut cannot be tightly sealed, the inner and outer panels are generally assembled into the plastic panel by means of a chemical bonding method using an adhesive. The plastic panel of the present invention is manufactured in such a manner that the adhesive 4 is applied to the bonding groove 7 formed along an edge of the inner or outer panel 2 or 3 and the two panels are then coupled and bonded to each other.
  • The inner and outer panels 2 and 3 of the plastic panel according to the present invention have one or two or more bonding grooves having various sectional shapes such that a bonding strength higher than a certain level can be maintained after the inner and outer panels have been bonded to each other. Once the number and sectional shape of the bonding grooves 7 to be formed is determined, a width and depth of the bonding groove can be determined and formed such that the adhesive can be applied to the bonding groove to a suitable bonding area and thickness enough to keep bonding strength to the certain level or more. The bonding area and thickness by which the bonding strength can be maintained after two panels have been bonded may vary according to the kinds of adhesive. However, once the adhesive is selected, at least one bonding groove 7 with a width and depth suitable for the selected adhesive can be formed. For example, if a bonding area and thickness of the bonding groove suitable for the kind of selected adhesive is determined, at least one bonding groove 7 and the corresponding protrusion, if necessary, enough to ensure the suitable width and thickness are manufactured. Then, a volume of an adhesive to be applied is calculated and the adhesive as much as the calculated volume is applied to the bonding groove. Therefore, the two panels can be coupled and bonded to each other. At this time, the amount of the adhesive applied is set slightly smaller than the volume of the bonding groove 7 formed between the inner and outer panels, and thus, it is possible to prevent the applied adhesive from leaking out between the bonded panels.
  • In the present invention, an additional space or spaces 6 are further formed at one or both sides of the bonding groove by extending the bonding groove 7 toward the one or both sides. Therefore, even though the adhesive is injected in the bonding groove more than the volume of the bonding groove, it is possible to prevent the applied adhesive from leaking out between the bonded panels. In a case where the additional spaces are formed at both sides of the bonding groove, their widths can be different from each other. Further, the additional space 6 can be formed to have the same depth (See FIGS. 3 to 7). However, the depth of the additional space can be gradually decreased away form the bonding groove such that the bonding area per an amount of adhesive applied can be increased.
  • On the other hand, a stopper can be configured (formed) on the bonding groove or the bonding surface corresponding to the bonding groove to prevent an incomplete bonding state from occurring at the bonded region or prevent the thickness of the applied adhesive from being decreased when the inner and outer panels are pressed and then bonded to each other.
  • In the present invention, it is most desirable that a thickness (height) of the stopper be equal to the gap between the floor surface of the bonding groove and the bonding surface. However, the height may be slightly less than the gap. Further, a width enough to withstand a bonding pressure applied when the inner and outer panels are bonded and coupled to each other is sufficient for the stopper. Accordingly, it is preferred that the width of the stopper be formed as narrow as possible.
  • The stoppers 5 can be formed on the bonding groove or bonding surface at regular intervals (See FIG. 4). Alternatively, the stopper 5 can be formed to continuously extend along the bonding groove or bonding surface (not shown).
  • Further, the stopper 5 can be separately manufactured and then placed on the bonding surface or bottom surface of the bonding groove 7. Alternatively, the stopper can be formed integrally with the panel.
  • Since the stopper 5 is formed, the bonding groove and bonding surface cannot be further pressed. Thus, the two panels can be bonded to each other with a predetermined pressure. Due to the aforementioned structure of the present invention, therefore, an amount of adhesive used more than necessary can be minimized, and the conventional problem in that the fluid adhesive leaks out between the inner and outer panels and contaminates the exterior of the plastic panel can also be solved. Furthermore, a bonding force can be maximized.
    • INDUSTRIAL APPLICABILITY
  • The plastic panel of the present invention can be usefully applied to a vehicle door, in particular, a panel for a tail gate.
  • The present invention has the following advantages. That is, since the bonding groove is bonded to the bonding surface of the inner or outer panel, it is possible to prevent the applied adhesive from leaking to the outside. Further, since the bonding groove formed on the inner or outer panel serves as a guide when the adhesive is applied, the adhesive can be applied at a uniform thickness to correct positions even though it is manually applied. Furthermore, since a stopper and additional space are provided on the bonding groove or bonding surface, even an adhesive with certain fluidity cannot leak out between the inner and outer panels. Therefore, the post-processing work for enhancing the external appearance is not required, the manufacturing time and costs can be reduced, and the bonding force can be increased due to the increased bonding area.

Claims (8)

1. A plastic panel, comprising:
an inner panel formed with any one of a bonding groove to be coated with an adhesive and a bonding surface corresponding to the bonding groove; and
an outer panel formed with the other of the bonding groove and bonding surface.
2. The plastic panel as claimed in claim 1, wherein the bonding groove is formed on the inner panel.
3. The plastic panel as claimed in claim 1, wherein an additional space extends from the bonding groove.
4. The plastic panel as claimed in claim 1, wherein the bonding surface is shaped as a protrusion corresponding to a shape of the bonding groove.
5. The plastic panel as claimed in claims 1, wherein the bonding groove or bonding surface is formed with a stopper.
6. The plastic panel as claimed in claim 5, wherein the stopper has a height (thickness) which is equal to or smaller than a gap between the bonding surface and a floor surface of the bonding groove.
7. The plastic panel as claimed in claim 6, wherein the stopper is formed integrally with the inner or outer panel.
8. The plastic panel as claimed in claim 7, wherein the plastic panel is used for a vehicle door.
US11/325,866 2005-01-06 2006-01-05 Plastic panel Abandoned US20060144014A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20050001096 2005-01-06
KR10-2005-0001096 2005-01-06
KR1020050108550A KR100662101B1 (en) 2005-01-06 2005-11-14 Plastic panel
KR10-2005-0108550 2005-11-14

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JP (1) JP4421616B2 (en)
KR (1) KR100662101B1 (en)
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WO (1) WO2006073267A1 (en)

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EP1833665A4 (en) 2010-01-13
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