CA1232523A - Method of bonding a laminated assembly - Google Patents
Method of bonding a laminated assemblyInfo
- Publication number
- CA1232523A CA1232523A CA000439359A CA439359A CA1232523A CA 1232523 A CA1232523 A CA 1232523A CA 000439359 A CA000439359 A CA 000439359A CA 439359 A CA439359 A CA 439359A CA 1232523 A CA1232523 A CA 1232523A
- Authority
- CA
- Canada
- Prior art keywords
- plate sections
- particles
- bead
- bonding
- bonding agent
- 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.)
- Expired
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
- 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
- B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
- B29C65/487—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical
- B29C65/4875—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their shape, e.g. being fibres or being spherical being spherical, e.g. particles or powders
-
- 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
- B29C65/7826—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 non-integral with the parts to be joined, e.g. particles
-
- 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
- B29C66/50—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
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/536—Joining substantially flat single elements to hollow articles to form tubular articles
-
- 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
- B29C65/4865—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives
- B29C65/4885—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding containing additives characterised by their composition being non-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
- 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
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
ABSTRACT OF THE INVENTION
A bonding agent comprising an adhesive impregnated with bead-like particles of plastic, glass, metal, or the like material of uniform size is applied to at least one face of adjoining plate sections of a laminated pipe bracket assembly so that, when clamped together, the adjoining plate sections are bonded with a bond line thickness corres-ponding to the size of the bead-like particles.
A bonding agent comprising an adhesive impregnated with bead-like particles of plastic, glass, metal, or the like material of uniform size is applied to at least one face of adjoining plate sections of a laminated pipe bracket assembly so that, when clamped together, the adjoining plate sections are bonded with a bond line thickness corres-ponding to the size of the bead-like particles.
Description
(Case Jo. 8116) ~L~32~ 3 METHOD OF BONDING A L~I~ATED ASSEMBLY
BACKGROUND OF THE I~VE~TIO~
The present invention is concerned with laminated pipe brackets or the like, and particularly with a method of bonding the pipe bracket laminations together.
In laminated assemblies containing valve devices or other operating devices, the adjoining plate sections of the assembly are connected together by through bolts, which facilitate disassembly in order to service the operating mechanisms contained in the valve assembly. On the other hand, laminated assemblies containing only passageways, such as the well-known pipe brackets empLoyed with railway brake control valves, for example, need not be serviced and are therefore permanently assembled by bonding together the ad-joining plates comprising the laminated assembly.
The passageways in these pipe brackets are formed atthe interface of the adjoining plate laminations by forming channels in the face of one plate section, with the face of the mating plate section cloying the channels to form the Jo passageways. The adhesive used to bond the plate laminations serves the additional function of sealing the area between the passageways.
In order to obtain maximum strength of the bond, the bond line thickness must be closely controlled. Accordingly, it is common practice to use shims between the adjoining plate laminations to establish the desired thickness of the bond. The mating faces of the adjoining plate sections are ~3~ ,3 coated with the desired adhesive and then clamped together following placement of the shims. The shims support the clamping force and thereby establish the desired bond line thickness. In order to assure full contact of the adhesive with the adjoining plate sections, it is necessary to apply an excess amount of adhesive. Thus, when the adjoining plate sections are pressed together, this excess adhesive squeezes out until the desired bond line thickness is obtained, as determined by the shim thickness. The extreme care required in placing these shims at various locations on the surfaces to be bonded is time-consuming and thus expensive. Also, the considerable waste of adhesive is expensive.
SUMMARY OF THE INVENTION
It is, therefore, the object of the present invention to provide an improved method of bonding adjoining sections of a laminated assembly, in which it is desirable to maintain a certain chosen bond line thickness.
This objective is accomplished by employing a bonding agent comprising a suitable adhesive impregnated with bead-like particles of plastic, glass, metal, or the like materialhaving a uniform diameter corresponding to the bond line thickness desired. Each face of the adjoining plate sect-ions of a laminated assembly is coated with this impregnated bonding agent and clamped together until the adhesive cures.
The bead-like particles have sufficient strength to support the clamping pressure and to establish the desired bond line thickness.
~3~ 3 BRIEF DESCRIPTION OF THE DRAWING
This objective and other advantages will become appar-ent from the following more detailed explanation of the in-vention when taken with the single-figure drawing showing a partial cross-sectional view of a laminated assembly in which the adjoining plates are bonded together to form passageways.
DESCRIPTION AND OPERATION
Shown in the drawing is a laminated pipe bracket assem-bly 1 comprising a pair of adjoining plate sections 2 and 3, which are bonded together with a suitable adhesive, such as epoxy. The purpose of the laminated pipe bracket assembly 1 is to form passageways 4 in a simplified and less costly man-ner. Channels 5 are formed in the face of one plate sec-tion 2. These channels are closed to form the desired pas-sageways, by bonding the adjoining plate section 3 in place.The bonding joint 6 between the plate sections 2 and 3 serves as a seal between adjacent passageways 4 formed by the chan-nels 5, in addition to securing the plate sections together.
In order to obtain optimum bonding strength between plate sections 2 and 3, and size uniformity of the respective laminated assemblies 1, it is desirable to establish and maintain a certain chosen bond line thickness. This is accom-plished, in accordance with the present invention, by pre-mixing a plurality of uniformly-sized beads 7 with the bond ing adhesive. These beads may be of a plastic, glass, metal, or the like ma-terial. The prepared bonding agent is applied to the adjoining faces of plate sections 2 and 3, after which ~L~3~ 3 the adjoining faces are pressed together and clamped in place. Beads 7 are interspersed randomly throughout the ad-hesive, and are of sufficient strength to withstand the clamping force and thereby establ:ish the desired bond line thickness. In addition, beads 7 aid in :Leveling the adhes-ive to the proper thickness before clamping.
It will be apparent from the foregoing, that the bead-impregnated bonding agent eliminates the need for shims and the time-consuming task of locating them. Furthermore, in applying the bonding agent, the beads 7 tend to serve as a leveling guide to minimize the excess adhesive required to assure proper bonding and thus reduce adhesive waste. The resultant method of bonding is thus more efficient and less costly.
BACKGROUND OF THE I~VE~TIO~
The present invention is concerned with laminated pipe brackets or the like, and particularly with a method of bonding the pipe bracket laminations together.
In laminated assemblies containing valve devices or other operating devices, the adjoining plate sections of the assembly are connected together by through bolts, which facilitate disassembly in order to service the operating mechanisms contained in the valve assembly. On the other hand, laminated assemblies containing only passageways, such as the well-known pipe brackets empLoyed with railway brake control valves, for example, need not be serviced and are therefore permanently assembled by bonding together the ad-joining plates comprising the laminated assembly.
The passageways in these pipe brackets are formed atthe interface of the adjoining plate laminations by forming channels in the face of one plate section, with the face of the mating plate section cloying the channels to form the Jo passageways. The adhesive used to bond the plate laminations serves the additional function of sealing the area between the passageways.
In order to obtain maximum strength of the bond, the bond line thickness must be closely controlled. Accordingly, it is common practice to use shims between the adjoining plate laminations to establish the desired thickness of the bond. The mating faces of the adjoining plate sections are ~3~ ,3 coated with the desired adhesive and then clamped together following placement of the shims. The shims support the clamping force and thereby establish the desired bond line thickness. In order to assure full contact of the adhesive with the adjoining plate sections, it is necessary to apply an excess amount of adhesive. Thus, when the adjoining plate sections are pressed together, this excess adhesive squeezes out until the desired bond line thickness is obtained, as determined by the shim thickness. The extreme care required in placing these shims at various locations on the surfaces to be bonded is time-consuming and thus expensive. Also, the considerable waste of adhesive is expensive.
SUMMARY OF THE INVENTION
It is, therefore, the object of the present invention to provide an improved method of bonding adjoining sections of a laminated assembly, in which it is desirable to maintain a certain chosen bond line thickness.
This objective is accomplished by employing a bonding agent comprising a suitable adhesive impregnated with bead-like particles of plastic, glass, metal, or the like materialhaving a uniform diameter corresponding to the bond line thickness desired. Each face of the adjoining plate sect-ions of a laminated assembly is coated with this impregnated bonding agent and clamped together until the adhesive cures.
The bead-like particles have sufficient strength to support the clamping pressure and to establish the desired bond line thickness.
~3~ 3 BRIEF DESCRIPTION OF THE DRAWING
This objective and other advantages will become appar-ent from the following more detailed explanation of the in-vention when taken with the single-figure drawing showing a partial cross-sectional view of a laminated assembly in which the adjoining plates are bonded together to form passageways.
DESCRIPTION AND OPERATION
Shown in the drawing is a laminated pipe bracket assem-bly 1 comprising a pair of adjoining plate sections 2 and 3, which are bonded together with a suitable adhesive, such as epoxy. The purpose of the laminated pipe bracket assembly 1 is to form passageways 4 in a simplified and less costly man-ner. Channels 5 are formed in the face of one plate sec-tion 2. These channels are closed to form the desired pas-sageways, by bonding the adjoining plate section 3 in place.The bonding joint 6 between the plate sections 2 and 3 serves as a seal between adjacent passageways 4 formed by the chan-nels 5, in addition to securing the plate sections together.
In order to obtain optimum bonding strength between plate sections 2 and 3, and size uniformity of the respective laminated assemblies 1, it is desirable to establish and maintain a certain chosen bond line thickness. This is accom-plished, in accordance with the present invention, by pre-mixing a plurality of uniformly-sized beads 7 with the bond ing adhesive. These beads may be of a plastic, glass, metal, or the like ma-terial. The prepared bonding agent is applied to the adjoining faces of plate sections 2 and 3, after which ~L~3~ 3 the adjoining faces are pressed together and clamped in place. Beads 7 are interspersed randomly throughout the ad-hesive, and are of sufficient strength to withstand the clamping force and thereby establ:ish the desired bond line thickness. In addition, beads 7 aid in :Leveling the adhes-ive to the proper thickness before clamping.
It will be apparent from the foregoing, that the bead-impregnated bonding agent eliminates the need for shims and the time-consuming task of locating them. Furthermore, in applying the bonding agent, the beads 7 tend to serve as a leveling guide to minimize the excess adhesive required to assure proper bonding and thus reduce adhesive waste. The resultant method of bonding is thus more efficient and less costly.
Claims (2)
1. A method of bonding together adjoining plate sections of a laminated assembly wherein at least one plate section is formed with at least one channel in the face thereof for forming a fluid pressure conducting passageway at the interface of the laminated assembly when the ad-joining plate sections are joined together comprising the steps of:
(a) mixing a plurality of bead-like particles with an adhesive to form a bonding agent;
(b) applying a coating of said bonding agent to the face of at least one of said plate sections, said particles serving as a leveling guide to establish a uniform minimum thickness of said coating corresponding to the size of said bead-like particles;
(c) claimping said plate sections together; and (d) curing said bonding agent, whereby a bond line thickness is established corresponding to the size of said bead-like particles without any excess adhesive being squeezed into said channel forming said fluid pressure conducting passageway.
(a) mixing a plurality of bead-like particles with an adhesive to form a bonding agent;
(b) applying a coating of said bonding agent to the face of at least one of said plate sections, said particles serving as a leveling guide to establish a uniform minimum thickness of said coating corresponding to the size of said bead-like particles;
(c) claimping said plate sections together; and (d) curing said bonding agent, whereby a bond line thickness is established corresponding to the size of said bead-like particles without any excess adhesive being squeezed into said channel forming said fluid pressure conducting passageway.
2. The method as recited in claim 1, wherein said bead-like particles are of sufficient strength to support the force with which said plate sections are clamped together, whereby the thickness of the bond line formed between said plate sections is determined by the size of said beads.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43608682A | 1982-10-22 | 1982-10-22 | |
| US436,086 | 1982-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1232523A true CA1232523A (en) | 1988-02-09 |
Family
ID=23731058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000439359A Expired CA1232523A (en) | 1982-10-22 | 1983-10-20 | Method of bonding a laminated assembly |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5991172A (en) |
| CA (1) | CA1232523A (en) |
| ZA (1) | ZA837867B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930259A (en) * | 1972-07-20 | 1974-03-18 |
-
1983
- 1983-10-20 CA CA000439359A patent/CA1232523A/en not_active Expired
- 1983-10-21 ZA ZA837867A patent/ZA837867B/en unknown
- 1983-10-21 JP JP58196243A patent/JPS5991172A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ZA837867B (en) | 1984-06-27 |
| JPS5991172A (en) | 1984-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |