JPS60184827A - Encapsulated article - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of enclosing objects or articles, and to a kit and article for use in the method.

[Prior Art] The present invention is not limited to the encapsulation of articles of particular shape, or is useful for encapsulating long articles, such as supply lines such as heat supply pipes and oil pipes that require corrosion protection, or communication cables such as electrical ones. It is especially suitable for a for enclosing joints. Traditionally, such articles have been manufactured by, for example, filling the enclosing enclosure box with a curable resin or mastic (for cable joints), or using a method to ensure a good seal between the encloser and the enclosed article. The heat-activated adhesive is encapsulated and protected by shrinking a heat-shrinkable enclosure around the article using a heat-activated adhesive that is either a pot-melt adhesive or a curable adhesive. It may be. For example, Fukoku Patent Specification No. 2,104,800 describes an adhesive consisting of two or more reactive components in the form of a mixed powder that provides a long shelf life and fast curing speed. has been disclosed. Known enclosures using curable adhesives are characterized by adhesive conditions (e.g., high cure rate and extent, surface wetting, void filling, flexibility,
Difficulties in applying and using the article tended to arise due to conflicts between materials (as well as bonding between dissimilar materials such as plastics and metals). Preferably, heat is applied to melt the adhesive to sufficiently wet the encapsulated article.

It is at this stage that the heat dissipation effect of the article, especially a metal-based article such as a pipeline, is at its maximum, and curing of curing systems that require high temperatures to cure is inhibited. The present invention is designed to solve these difficulties in stone cutting, and is designed to overcome these difficulties.

[Structure of the Invention] The present invention provides at least B- after curing of curability + A1-1.
・Sufficient thickness and/or thickness to provide a temporarily laminated hardened structure
or an enclosure comprising layers of various materials and enclosing at least a portion of the article and comprising a substantially solid thermoplastic polymeric feed comprising a curable feed; 1, when the heat-flowable polymeric material forms a layer of thermoplastic polymeric material overlying the substantially solid hardenable feed layer encapsulating the article, the hardenable feed has (a
(b) a free radical curable adhesive, a mixture of a polymer and a free radical curable generator, preferably an activated catalyst for the generator. The present invention provides the following methods: (1) manufacturing the enclosure by arranging a thermoflowable polymeric material to encapsulate at least a portion of the article;
A method for encapsulating an article comprising curing a hardenable feed to form a laminate hardened structure is provided.

Laminated structures as used herein are defined as layers with defined interfaces (but are not limited to this, and for many purposes may also include somewhat smooth gradient transitions between layers).

The cured laminate structure of the polymeric compositions described above can have fairly soft and/or flexible layers to provide flexibility, and internal and/or external layers of the flexible layer to provide strength. A rigid JW can be formed (herein, the polymer composition is referred to as an adhesive for convenience, without being limited to materials conventionally considered adhesives or materials that actually adhere to the encapsulated article. However, , such adhesion is preferred). For example, if a fragile structure is destroyed or damaged when placing a splice cable (e.g. into a conduit or manpole), such layers allow greater flexibility when attached to the cable splice. Make it.

In a preferred form of the invention, the adhesive may be a fully curable monolith having sufficient thickness to provide a laminated cured structure by gradually decreasing the degree of cure. Such reduction can be achieved, for example, by appropriate curing temperature gradients during fairly short thermal curing cycles and/or
or by initiating free radical curing on the surface of the composition (e.g., by contacting an adhesive that binds a free radical generator with a catalyst that activates the generator, or less preferably, by initiating a free radical cure on the surface of the composition). (by contacting the adhesive-containing layer with the generator-containing layer). If the laminate structure is long enough for the desired purpose (e.g., to facilitate installation of a conduit or manhole splice power cable), it is not important whether curing is actually complete.

Curing is initiated from the outside, for example by applying heat, and from the inside, for example by heating the encapsulated article and/or by applying the catalyst to the article on the application surface of the curable adhesive.

You may start from both the outer and inner sides to obtain a less cured intermediate layer with a suitably thick adhesive. Alternatively, or in addition, lamination by applying redundant curable material layers or by applying similar curable material layers containing different hardeners or different amounts of hardeners or inhibitors. I can play with Zuroko. Different curable materials include polymers of different molecular weights.

The adhesive composition may be prepared by any convenient method, such as necessary to form either a single curable layer, multiple curable layers, or a mixture of curable and non-curable layers. It can be applied by wrapping a self-supporting tape or sheet of material. For end applications that require adhesives of irregular thickness, such as for the enclosure of electrical cable splices with mechanical connectors of much larger diameter than the cable, it is more effective than enclosable tape for encapsulated articles. It may be convenient to provide a fairly rigid adhesive composition of suitable shape (herein referred to as "chunk J" without implying any particular size or shape) positioned to fill the surrounding space. It is.

Thus, the present invention provides a tape or sort capable of at least one of said chunks and/or rolls (=tζ"j) and a thermofluidity
4. A kit of parts for use in forming an enclosure as described above or for carrying out a method as described above, comprising a cover capable of restraining and fastening around an enclosed article; The present invention provides an article for use in the above-described enclosure or method, comprising a self-supporting body of a heat-flowable polymer composition shaped so as to be arranged without bending.

In addition to or in place of the above 6, the adhesive composition includes:
It may be provided as a coating on a cover that encapsulates the adhesive and at least a corresponding portion of the article in use. The cover may be dimensionally heat recoverable, in which case the adhesive (on the cover and/or elsewhere) is thermofluid at temperatures experienced during heat recovery of the cover around the article. It is preferable. This is preferred when a non-adhesive coated heat recoverable cover is used with a separate adhesive (eg, surrounding tape or chunk). Sufficient curing may occur in the adhesive upon heat recovery, or
This may occur by additive hardening or post-recovery heating. It is of course that the adhesive is suitably physically restrained by other means in the flowing state if no cover is used, and such means or cover is removed after curing and/or after cooling to the solid state. be able to.

Accordingly, the present invention provides an enclosure 2 having a cover enclosing at least a portion of a heat-flowable polymeric material, and the cover comprising a heat-recoverable polymeric material, wherein the heat-flowable polymeric material is The present invention includes an enclosure characterized in that it is thermofluid at temperatures encountered during thermal recovery of the loose cover of the enclosed article.

A dimensionally recoverable article is an article whose dimensional shape changes substantially when subjected to a suitable treatment, preferably a heat treatment.

Typically, these articles will, upon heating, recover to the original shape of the piece to which they are deformed, or, as the term "heat recoverable" is used herein, will be considered new as having not been previously deformed. Includes objects that take a shape.

In its most general form, heat recoverable articles are elastic or plastic articles such as those described in U.S. Pat. It consists of a heat-shrinkable sleeve made from a polymeric material that exhibits memory properties. As illustrated in U.S. Pat. No. 2,027,962,
The initial dimensionally thermostable shape may be a temporary shape during a continuous process, such as expanding an extruded tube while hot into a dimensionally thermostable shape; In other cases, preformed dimensionally heat-stable articles are transformed into dimensionally heat-stable shapes in other steps.

When manufacturing heat recoverable articles, the polymeric material may be crosslinked during any step in the manufacture of the article that enhances the desired dimensional recovery. One method of making heat recoverable articles is to form the polymeric material into the desired heat stable shape and then crosslink the polymeric material to form the article, depending on the type of polymer, at a crystalline melting point or for amorphous materials. Heating the article to a temperature of 100% to soften it, deforming it and leaving it in that state.
It consists of cooling and maintaining the deformed state of the article. In use, the article in the deformed state is thermally unstable and will tend to assume its initial thermally stable shape when exposed to heat.

In other articles, an elastic member, which is an outer cylindrical member, is held in tension by a second member with an inner cylindrical member, as described, for example, in British Patent No. 1,440,524. Then, heat or other treatment (eg, solvent treatment) softens the member and restores the elastic member.

In recent years, heat recoverable articles have found many uses in encapsulating and protecting long objects from the environment. For example, heat recoverable articles are frequently used to encapsulate electrical and communication cable joints and other equipment, and to protect supply lines such as oil pipes and heat supply pipes. The article may be in the form of a hollow sleeve that shrinks in the direction of 1 and 4 when heated, and can be wrapped around an object when the end of the object cannot be easily obtained.
ζj Gerero note or arp shape -) may be used. A saw-shaped device is particularly suitable for enclosing such objects. ) The mating end portions are secured together using a so-called "wrap-around" device, which is typically constructed from heat-shrinkable polymeric notebooks that are closed together. The sheet then contracts tightly around the object to form an environmental seal. Such a device is British Patent No. 1.155,4.
No. 70 yam double; He is fighting himself.

Environmentally Protective 4-The heat recoverable article used in the saw may be coated with a nolant layer (e.g., potmelt adhesive or mastic) to form a seal between the object and the heat recoverable article.
Or normally supplied in the direction of recovery. In certain shaped articles (eg, splice cases for communications cables), the use of hot melt adhesives is preferred. Hot melt adhesives have a large adhesive strength and can be high depending on the composition of the adhesive! This is because the strength is normally maintained at +A. If it is desired to increase the maximum operating temperature of the article, select a suitable adhesive with a high melting point. However, in some situations, increasing the melting point of hot melt adhesives can cause installation problems. For example, if the article is to be installed at low installation temperatures, it may be difficult to melt the adhesive without damaging the outer surface of the article, especially since the materials forming the heat-recoverable article generally have low thermal conductivity. It may not be possible to supply enough heat to the adhesive. Another problem that may occur is if the object to be encapsulated is susceptible to damage from heat and mechanical edges (e.g. if the object is made of polyvinyl chloride, which is not suitable for use at high temperatures). When installing cable jackets, such as cable jackets formed from low density polyethylene or ethylene copolymer, the objects to be encapsulated can be damaged at the temperatures required to melt the true melt adhesive.

It is in the spirit of the present invention to use a thermoplastic or elastic layer that is particularly suitable for pipe protection and to provide a resilient (preferably heat resilient) cover that will recover around the object. , when in use the object is covered with at least 6 portions of the surface of the cover (a) an epoxy compound or (b)
The free radical curing feed (timer) may be an oligomer (preferably a monomer), a substantially ζ comprising a mixture of a polymer and a free radical generator or a catalyst for activating the generator. An article is provided having a solid curable adhesive layer and an intermediate layer comprising a heat softenable polymeric material located between the cover and the adhesive, enclosing at least a portion of the object. Preferably, the polymeric sidewall of the intermediate layer has a melting point or softening point higher than the melting point or softening point of the curable adhesive and a thickness greater than the thickness of the curable adhesive.

According to another aspect, the invention provides a method for encapsulating at least a portion of an object, comprising: (a) an epoxy compound, or free radical curable material, a polymer and a free radical generator or an activation catalyst for the generator; (b) disposing a substantially solid curable adhesive layer comprising a mixture of the following on the body of the object; (b) disposing an intermediate layer comprising a thermosoftenable polymeric material on the curable circumscribing agent; (c) disposing a dimensionally recoverable (preferably heat recoverable) cover over the intermediate layer; and (d) recovering the cover and curing the curable adhesive. do.

The details of construction, materials and formulations, combinations thereof H1 and other features described below in this aspect of the invention may be applied as appropriate to all other aspects of the invention.

In all cases, it is preferred to include a mowing step in which the object is provided with an activation layer comprising an activated catalyst that activates the free radical generator of the mixture when it comes into contact with the curable adhesive. However, a suitable activator, such as a salt of a transition metal (preferably cobalt or vanadium), may be included in the article of the invention, preferably by applying heat to the article during attachment to the object. It may be included in the intermediate layer to minimize activation of the generator until the intermediate layer softens.

In other embodiments of the invention, the intermediate layer may eliminate the need for an activated catalyst undercoat and/or enhance the curing of the curable adhesive. Part '1 itself is curable and may be cured.

As used herein, the term ``substantially solid'' refers to a material so called, compared to the behavior of a liquid material (at ambient temperature) where it is placed. This means that the accuracy is sufficiently high to make it possible to buy one of the recovery products. If a recoverable article is used, it is preferred to coat the article with a '4' coating. The curable material is P
It is preferably "storage stable" in the sense that it does not harden to an unacceptable extent at ambient or normal storage temperatures when not in contact with an activated catalyst, even if uncoated. It is possible to supply products that can be conveniently used in remote locations such as construction sites.

The term ``curable'' refers to ``changes in which a curable mixture is subjected to a combination of pressure and temperature above ambient to produce a product that no longer flows.'' For example, it has a useful meaning in that it can perform crosslinking or polymerization).

The invention's top closures and articles can be used to protect rolling objects, extremely long substrates (e.g., splices in power or communications cables), and include preferred curable mixtures. It is convenient to use it in objects that are substantial heat dissipators (power cables and pipelines).

Recoverable articles with curable mixtures are of particular use in metal pipelines (eg oil pipelines). Cured adhesive bonding allows for in-situ mixing of the curable components between the substrate and the polymer note, resulting in adequate shelf life of the article. Such bonds tend to have excellent resistance to soil stress and other environmental influences when encapsulated in pipelines or buried underground, and most curable adhesive compositions Despite the considerable heat dissipation effect of the pipeline, which prevents the curing of the product, the temperature of the pipeline is not higher than 80 °C (e.g.
(40-80°C) under liquid transport operation. Surprisingly, although it has been difficult in the past to adhere well to polyolefins due to their very different surface properties, by using an appropriate embodiment of the present invention, it is possible to bond polyolefins to adhesives. Glue the polymer notebook and metal base (for example, a pipeline) together in a 4-step process.

When using an adhesive-coated cover, a curable adhesive and (
If necessary) the curable thermoplastic polymer of the middle layer + 1' layer is used in steps (a) and (b) of the method of the present invention.
and (C) may be pre-coated onto the recoverable cover substantially simultaneously in row 6. Alternatively, each of the three elements may be applied separately and sequentially, or a single element combining a curable adhesive and an interlayer may be used with a separate cover. The recoverable cover is precoated only with an intermediate polymeric feed, and the curable adhesive is not applied, e.g.
It could be supplied separately as a printed formulation (such as a two-component epoxy) that is mixed at the time of installation or as an adhesive wrap in perhaps one or more layers. Applying one or more layers to the cover-1-
ζ Often, a compound is formed into one piece.

The intermediate polymer and the curable adhesive may be extended to one of these (1) with the resilient cover, or may be present on only certain parts of the object.

On the other hand, the resilient cover is located on the second part of the object.

In such an allen node, two polymer layers may be placed along the length of the cable adjacent to the splice, and a cover encapsulates the polymer layer and the splice.

Pipe protection? Consequently, the thickness of the middle IGf1 layer may be greater than the thickness of the curable adhesive layer. The intermediate layer of thermoplastic polymeric material is preferably at least 60%, especially at least 70% of the total thickness of the intermediate layer and curable adhesive layer, giving good void filling properties. However, a thinner layer may be used to provide better adhesion between the cover and the curable adhesive.

The curable adhesive may comprise an evogyno compound known to cure when contacted with a suitable curing agent such as an amine at elevated temperatures, and both curable components are in the form of a one-minute pressed powder. Epoxy systems comprising mixtures are described in British Patent Specification No. 2. [04°8o +y is preferred because of its long shelf life and good combination of l-++, 0 curing.

Preferred monomer/polymer curable adhesives (appropriate storage)! Life, curing speed and curing contact! In order to achieve a single property, the curable components may be formed and blended from a plurality of curable components selected from known monomers, polymers, free-random generators, and catalysts. Substantially solid mixtures are curable in the sense that they can be made into polymers that do not unacceptably affect curing. In the specification, the cured f14A' 14 is referred to as a "monomer."

The curable +Af4 is preferably a monomer, or can be made using a timer J6 and an oligomer. Any unsaturated monomer, free-random generator, and catalyst that effect the desired curing reaction upon contact between the solid coating containing monomer (and free-run generator) on the catalyst may be used. Acrylic monomer is preferred. Acrylic monomers include acrylic acid, methacrylic acid and mono- and multi-acrylates (methacrylates) such as 2-edylhexyl acrylate, tetraethylene glycol non-tacrylate, trimedyl[1-ylpropane trimethacrylate].

The curable monomer/polymer mixture is a flowable liquid or 'l' which may contain so-called oligomers, liquid acrylic monomers such as polyethylene glycolone methacrylate or noacrylate, tripropylene glycolone acrylate, 1, G-hegyzane. Noorno methacrylate or noacrylate, polytetramethylene ether glycol noacrylate, polybutane enoacrylate, polyester-methacrylate, methacrylate, vinyl-terminated acrylonitrile butadiene, acrylated epoxidized large (〕: oil, tosmedylol) [lpantrimethacrylate, and a non-reactive polymer, preferably an acrylic polymer, in an amount and viscosity sufficient to cause the mixture with the flowable monomer to be substantially solid under ambient storage conditions. That's preferable.

The acrylic polymer described in -1- is thermoplastic and has good elasticity. As an example, polybutyl methacrylate (e.g. I:1vaciLt32044.Dupo
nL or Plexigum P24. Rohm). They have 'Fg near or above room temperature (=1) and are thermoplastic.

Non-acrylic polymer (for example, VAE711°Wack
er, 70% vinyl acetate).

This is an elastomer.

Other thermoplastic materials, such as ethylene-hinyl acetate cobolymer (EVΔ) containing less than 50% VA;
Ethylene-edyl atelylate copolymer (EEA),
Polyethylene-butyl acrylate may be used.

If necessary, a plasticizer, such as N-EDIRO-0-.

p-Toluenesulponamide (Santicizer)
8゜Mon5anto) or 2-ethylhexyl diphenyl phosphate (Santicizcrl I 4
, Mon5anto).

In this regard, reactive polymers that normally contain nail stabilizers to promote storage stability must not contain fl stabilizers that impede or stop the curing reaction to an unacceptable extent. That is important. For example, commercially available polyisobutylene and polypropylene oxytoalkyl glycol ethers interfere with the curing of acrylic monomers.

However, polybutyl methacrylate-1. does not interfere.

This is believed to be due to the inclusion of small amounts of stabilizers or incompatibility with other polymers such as too high a viscosity. Preferred acrylic monomers and preferred polymers are polyacrylates (methacrylates), especially acrylic monomers. This polybutyl methacrylate, and vinyl acetate-ethylene copolymer (e.g., the VAE
711) including 4-ro.

The free-random generator/catalyst system may be selected according to known criteria to meet the conditions of use and requirements. From perogycid free radical/-1(?I
3. An amine catalyst such as an amine (e.g., N,N dimethyl-p-toluine, its zacharin salt, N phenylnoethanolamine) is suitable. White organic compounds of J5 filter metals may be used and/or in various oxidation states, such as iron, cohaltum or manka salts (e.g.
cobalt naphthinate) or copper acetylacetone)
-Alternatively, a hananium salt catalyst may be used.

The metal compounds described above in proportions of 1 to 30% by weight, preferably 1 to 30% by weight, are useful in epoxy cured primer layers when used in conjunction with the preferred acrylic curing stone contact agent. When using an amine catalyst, 10 to 25% by weight
Or preferable.

The catalyst may be mixed with suitable carriers, binders, corrosion inhibitors, fillers, etc., as required. Suitable binders include polyvinyl butyral, VAF],
Includes ΔΔ, EEA and polybutyl methacrylate.

The relative proportions of materials in the curable mixture may vary over a wide range depending on the desired properties before and after curing. For example, the weight of the mixture! j'i% is as follows.

Usable Preferred Optimal Polymer 30-90 40-60 50 Monomer 1
0~70 25~45 35 Peroxy+? 0. +~1
0 1-5 15 mixture remains somewhat flexible after curing 1
．． ]: Preferably combined with sea urchin.

Other additives which may be used in known manner and proportions include fillers (e.g. car pump hooks) (preferably 5%);
plasticizers (e.g. 2 ethylheginoldiphenylponuphate) (preferably 15%), and corrosion inhibitors (e.g. sodium hydrogen orthophosphate) (preferably 2
%) inclusive.

In another form of the invention, the catalyst (J) is included in the separately provided free radical generator and curable monomer/polymer mixture, or the free radical generator is present in the mixture. The morphology is preferred for optimum curing in practice.

When a noni intermediate layer and a cover are used, it is preferred that the intermediate layer is adhered or bonded by a force)<-. The intermediate layer may be bonded or adhered directly to the cover;
If desired, one or more layers of other materials may be disposed between the intermediate layer and the cover.

The intermediate layer of polymeric material may be formed from a hot melt adhesive or other sensitive adhesive. Polar decadates, particularly materials with free acid or salt groups (eg, free carbonic acid or amine groups) are preferred for forming the interlayer. Do these materials form legal recoverable goods? This is because it adheres well to polymer materials commonly used in (1) and curable adhesives (1). Preferred materials for forming the non-curing adhesive are polyamide-based hot melt adhesives, ethylene-hinyl acetate-based adhesives having an acid number of at least t) 5, preferably at least 15. , ethylene-alkyl acrylates). The family may be formed from one polymeric component that is itself polar;
It may also contain a polar component. In this case, the base polymer itself does not have to be polar. One such ingredient that is acceptable for use is British Patent Specification Disciple 2,07
5,991A. Middle layer or cuff
- If not, it can be bonded with a primer or other adhesive (e.g., a pressure sensitive adhesive, a curable adhesive such as a noacrylate adhesive or an anaerobic adhesive). .

As mentioned above, it is preferred that the separated intermediate polymer (A not cured) has a melting point or softening point higher than that of the curable adhesive. The temperature difference is preferably at least 10°C, and Preferably at least 1
5°C, especially at least 20°C. The melting point or softening point of the intermediate layer generally depends on the recovery temperature of the cover, the softening of the intermediate layer; the MA degree range and the thermal conductivity of the cover; Therefore, the softening point of the intermediate layer should be approximately equal to or lower than the recovery temperature of the cover.In general, It is preferable that the softening point of the intermediate layer is 30 degrees (2 degrees) lower than the recovery temperature of the cover to 10 degrees higher than the recovery temperature of the cover. Materials with a fairly wide softening temperature range are EIJ: Points may be whitened in the range from 30°C below the recovery temperature to 30°C above the cover's recovery temperature. Well, the cover is formed from a polyethylene-based polymer + 4 resins.
When the recovery temperature is 47 to 120°C, it is preferable that the melting point of the intermediate layer is 90 to 150°C.

Another 6' interlayer material is chlorosulfonated polyethylene (CSP) (eg, commercially available under the trademark 1-1ypaldn). CSP may be crosslinked by radiation or by treatment with a free hookal generator - peroxide).

C S I-' may be cross-linked at the interface with the adhesive after irradiation with the heat-recoverable support material or the adhesive.

Drape temperature is defined as the temperature at which the elastic interlayer feed substantially readily drape or conforms to the shape of the article to which it is applied and fills the voids. The recovery temperature of the cover depends on the recovery temperature of the cover, the drape range of the interlayer, the thermal conductivity of the cover and/or the substrate, and may be preferable when the cover reaches its recovery temperature and the interlayer recovers. It must be selected so that it fits well enough to begin draping. Yo)
The drape temperature of the intermediate layer is preferably approximately equal to or lower than the recovery temperature of the cover.

Preferably, the drape warm air in the middle layer is from 90 to at least 115°C when the cover is formed from a polyethylene-based polymer feed and has a recovery temperature of about 115-120°C. The drape temperature of the intermediate layer is preferably higher than the drape temperature of the hardening layer 1', F4, and the circular temperature difference is preferably 10°C, more preferably 15°C, and most preferably 20°C. The melting or softening point of an uncured curable adhesive depends on the desired function of the adhesive, the desired mounting temperature of the article, the maximum operating temperature of the attached article, the stress placed on the adhesive after attachment, and the stress placed on the object during encapsulation. In general, the melting point of the adhesive preferably does not exceed 100°C. Most recoverable articles are made of polyethylene or ethylene. This is because it is formed from a copolymer-based molybdenum.

However, the melting point of the curable adhesive may be significantly lower than these values since its melting behavior may change upon curing.

The heat shrink of the present invention can be satisfactorily mounted onto objects that, after installation, withstand significant temperatures and/or internal pressures without destruction or that operate at fairly low ambient temperatures or that act as large "heat dissipators". Be able to form sex objects. “The term heat dissipator-1 is
An object that has a fairly high thermal conductivity and is large enough to remove heat from the adhesive bonding layer and prevent adhesive melting. The presence of a fairly low melting point adhesive bonding the object made it possible to bag the article at fairly low ambient temperatures. Surprisingly, however, the performance of the attached article in other respects is considerably improved by the expected intermediate layer over the lower 1.4° performance of the curable adhesive. Thus, in some cases it is possible to form articles that can be mounted at low ambient temperatures, but which when mounted can withstand temperatures of 60° C. at internal pressures of around 40 KPa. This is surprising since the two layers do not mix thoroughly. - In addition to excellent results under static conditions, the articles of the invention show the ability to cycle up to 70° C., especially in small dimensions, for example at pressure horns of up to 40 KPa. Even large size cable splice enclosures can be easily cycled to 30KPa. The improved creep resistance is noticeable.

Articles according to the subject matter of the present invention include, for example, PVC.

Low-density polyethylene or ethylene polymer jackets may be installed on objects that are themselves sensitive to high temperatures, such as telecommunications cables, but in many cases (e.g. The risk of overheating of the object even when too much heat is applied to the heat-shrinkable cover is reduced.Without limiting the scope of the invention, the article Resistance to excessive heat of adhesive or melting or softening 4
- applying sufficient heat to the article so that the filter and the intermediate layer begin to soften; any excess heat applied to the article is absorbed by the intermediate layer to further melt or soften the intermediate layer; This is thought to be due to the fact that the temperature of the thermosetting adhesive does not rise until it is completely melted. Therefore, in many cases it is advantageous to form the intermediate layer from a semi-crystalline material when the temperature sensitivity of the object to be encapsulated is a concern.

Yet another advantage of the articles in this aspect of the invention is that the thickness of the curable adhesive, which is generally more expensive than other (hot melt) adhesives in many cases, is preferably between 0.3 and 0.3 mm.
The objective is to reduce the total cost of the attached article by reducing In other instances, for example, when an article is recovered on a temperature-sensitive cable, British Patent Specification No. 2.
There is no need to use cable protection devices such as those described in No. 075,77 IA.

In many cases, the article can be successfully used on objects with diameters or surface irregularities that are smaller than the diameter of a fully recovered article. This is because as the article recovers, the thickness of the intermediate layer increases and acts to increase the size of the object relative to the cover. The uncured curable adhesive preferably has a softening point or melting point low enough to wet the object to be encapsulated, and the intermediate layer to recover so as not to flow out between the object and the cover due to the high melting point or softening point. It is sometimes preferable to have a sufficiently low viscosity.

Curing of free-flowing curable monomers involves the use of catalysts and monomers.
77 proceeding at the interface of the polymer mixture, step 4-1 is enhanced by the application of heat (preferably sufficient heat to soften or melt the curable mixture and increase its wetting ability). 1 and 5 advantages of the present invention are:
Apparently due to the thermal curing proceeding from the inside of the adhesive layer, which is integrated with the catalytic curing proceeding from the outside of the adhesive layer, the heat-dissipating material 1- has a thin six-layer structure. It is possible for the curing to be surprisingly complete. On the other hand, these similar mechanisms 12 can be used with considerably thicker curable adhesive layers (e.g.
1'7 inverted greater than 3 mm, preferably greater than 10 mm, more preferably greater than 25 mm, especially 50
1-. It may be used to form a two-bond layer structure.

The recoverable article of the present invention can have various shapes, for example, the shape of a hollow dupe-like article formed by molding or extrusion;
Alternatively, it may be formed into a tape shape for sorting purposes.

In some articles it is preferred to cover one entire surface with both layers, while in other articles both layers may cover some parts of the article (4) and leave the loin and other parts uncoated. Alternatively, it may be preferable or necessary to coat with only one layer.

Thus, by way of example, the article is British Patent Specification I) No. 1°155.
It may be in the form of a wrap-around device, such as that described in US Pat.

If bonding is only required at both ends of the sleeve, the adhesive may be supplied as a strip at each end of the sleeve. Thus, the adhesive is a mechanically strong bond between the sleeve and the substrate, providing a seal that prevents the passage of fluids.

In addition to providing bonding and sealing, the adhesive layer at the end can form a layer with a diameter that matches the sleeve dimensions, as well as protect the substrate from mechanical stress or heat generated during recovery. .

In pipeline protection, the article is wrapped around a substrate (
Preferably, it is in the form of a ``wrap-around I note'', which is suitably fastened (for example by adhesive, preferably an adhesive patch).

Note+A'II preferably accounts for at least 10%, more preferably at least 20% to its unrecovered justice.
It is preferred that it be recoverable to the extent of 40%, and preferably at most 650%. By approximately 30% recovery, the end length of the i17 naro sheet was minimized and potential leakage) 8Y
The ducts should be rolled at a minimum of 4 degrees to ensure a good seal when first rolled tightly (preferably in the shape of a "Nocal L Trap 1") into a sort or group (O) for a good seal when rolled 1 to promote the 4-force, after the restoration of the note, the sheet is 8 (, i (J) glued to the end of the adhesive pad chrono, 1- or it is possible to stay in place. A recovery greater than 50% will result in damage to the lawner's adhesive bond + iJ ability of d5, or a recovery greater than this when the notebook is initially loosely wrapped around the substrate. You may do so.

A preferred form of sort has the monomer/polymer mixture on one surface and the catalyst on the other major surface (at least in an area that will not be the mixture coated surface in use). Therefore, the curing of the mixture is accelerated to minimize leakage, and sealing and bonding are facilitated in the exposed areas. For example, it can be applied to the required area (for straight bends of attachment to timber or for mounting II islands).

A method of manufacturing an article having an intermediate layer and a curable adhesive includes:
It can be readily devised by those skilled in the art of polymer extrusion and coating. However, the preferred acrylic polymer/monomer mixture can be prepared by mixing techniques using liquid monomers without the addition of solvent, such that the acrylic polymer/monomer mixture has a suitable viscosity for coating. , which then gels and becomes substantially solid without heat or other treatment after coating on a suitable polymeric notebook. Known coating methods (e.g. doctor blade) may be used and thicknesses of 0.3 to 3.
It is preferred to obtain a final solid coating of 0 mm, preferably 0.5 to 1.5 mm. The catalyst (e.g.
It can be applied to other surfaces of the sheet by plan spray or roll coating).

Some @ mallets of the present invention will be described below with reference to the accompanying drawings.

Figures 1-3 illustrate a portion of a heat-recoverable lasso pour-around article having a variety of common logger shapes, such as those found in British Patent No. 1,155,470.

However, other closure arrangements may be used and the article may be chicove-shaped. The article comprises a dimensionally resilient cover 1, part of which is shown. cover 1
is provided with a longitudinally extending rail 2 and a flap portion 3. When mounting an article, the article is wrapped around the object, the corresponding rail or the corresponding end portion (not shown) of the provided cover is placed over the flap portion 3 and the 2
Collide the wooden rails. The mounting sound is then heard by sliding the channel on the rail while keeping the rails in contact [°, heating the cover (e.g. with a gas torch) in the direction of the arrow in Figure 1 and placing it around the object. Closely recovered cover 0
Ru.

The article includes a curable adhesive layer 4 as specified herein.
and an intermediate layer 5 of thermoplastic material. layer 4
and 5 are shown thicker than they actually are for clarity. The intermediate layer 5 is preferably formed from a hot melt adhesive and has an initial softening point in the recovery temperature range of the cover 1. The uncured curable layer 4 has a temperature lower than the melting point or softening point ('reo) of the intermediate layer 5 by at least 1% as described above.
It has a melting point or softening point that is 0°C lower. The average thickness of the intermediate layer is about 3 times the thickness of the curable adhesive layer, the total thickness of both layers is about 0.4-1.4 mm, preferably 0.6-12 m.
It is m.

In FIG. 1, both layers extend into the flap portion 3 of the article. This arrangement is suitable in systems where there are no problems when heating the curable layer 4 below the flap part. Figures 2 and 3 show an improvement in the article design that is suitable in situations where it is essential to heat the curable layer beneath the flap due to the presence of an overlapping portion of the cover. In the improvement shown in FIGS. 2 and 3, the intermediate layer 5 terminates in the rail 2, the curable layer is straddled with a constant thickness as shown in FIG. 2, and the adhesive is applied as shown in FIG. Figures 4 and 5 show that the splice 7 between the cables 6 is 1° extending only along the curable layer 4 or along the flap portion 3 at constant thickness.
The deviation of the curable layer 4 and the intermediate layer 5 around (J[
A tubular article having six areas is shown.

The article may of course be in a wrap-around shape for this purpose or for use with an adhesive layer of this shape. , the article conforms to the shape or dimensions of the cable splice (or liner, if supplied) after recovery. In Figure 4, the article has two layers on its own, and a
In the figure, layer 4 is provided separately, for example as a glue lamp.

The present invention will be explained in more detail with reference to Examples below. During installation and curing, the straight-open pipe was kept at 50°C with hot oil flowing through it.

Examples 1 to 3 Adhesives are: 1. Free radical generator, t-butyl perbenzoate; 2. Acrylic polymer, polybutyl methacrylate-h (
P Iexigum P 24, Rohm commercial product).

3, an acrylic monomer, consisting of 1,6-hexatudiol dimethacrylate (SR2395arton+Or) or an acrylate-terminated oligomer with an average carbon chain length of 14 to 15 (Chcmlink 200 OSarLomcr commercial product).

In Examples 1 to 3, adhesives having the following composition <rv parts) were prepared.

Example 1 Example 2 Example 3 SR23935+4 - Chcmlink 21 35 [Butyl perhenzoate 2.5 2.5 2.5Plexigu
m P24 65 65 65Termax Black
k I , ] I curable adhesive was applied to heat-shrinkable polyethylene with an interlayer of hot melt adhesive based on EEA and polyethylene wax. Free
A curable adhesive was prepared by adding powdered acrylic polymer to a radical generator acrylic monomer solution and stirring by hand to form a low viscosity solution. After 1 to 10 hours, depending on the type and concentration of monomer/polymer, the viscosity of the solution increased and a substantially solid radish was obtained in ambient storage conditions. Immediately after mixing the adhesive ingredients? The intermediate layer was coated with a low viscosity solution by this hopper coating technique and allowed to assimilate at ambient temperature. 1 This method is advantageous because the amount of heating is small.

First, a free radical generator activated catalyst was primed on the pipe surface. The adhesive coated support was then wrapped around the pipe and the support was recovered by gas storage. Thermocouples between the pipe surface and the adhesive revealed a minimal temperature rise (approximately 5-10°C) of the adhesive relative to the pipe ambient temperature (50°C) during support recovery.

The sleeves were inspected after 16 hours. The recovered sample on the activated catalyst adhered to the pipe surface, and the adhesive layer hardened into a rigid layer that could only be removed from the pipe with difficulty using a chisel. The samples recovered on uncoated steel cured and the support/interlayer/adhesive could be easily removed from the pipe.

Two types of acrylic monomers, SR239 and Chcm
link 2000 created an adhesive that exhibited different properties upon curing. Adhesives based on 5R239 bonded well to steel, but tended to be brittle. On the other hand, adhesives based on Chemlink 2000 were very flexible at 50'C, but did not adhere well to steel.

Therefore, when a strong and elastic adhesive is required, two types of monomers are mixed as in Example 2.

Example 4 A 1-1ypalOn intermediate layer was formed as follows.

50% Hypalon (commercial product from Dupon) 15
% p 1ccoryn (adhesive dust-free 5% 5P5
53 (adhesive) 10% 5tatcx I 60 (carbon black) 6.25% Maglite (acid acceptor) 3% Ch
lorowax (J plasticizer) 05% triallyl isocyanurate (crosslinking enhancer) 025% antioxidant (e.g. Hintertof Jol antioxidant 11-agent) -I--(q--%-V 1sLancx (paraisomer) Linklen Rubber) 100% Oil Steel Pipe Koopcrs Organi
It was coated with cZinc based primer and then with epoxy adhesive M or acrylic adhesive. J-2T-1
The ypalon layer was installed followed by a heat shrinkable polymer cover and the cover was prevented from heat shrinking. In addition, the )(ypalons were crosslinked by irradiation. They exhibited excellent peel strength, shear strength, and cathodic peel resistance.

Example 5 Example 4 except that the layer is thermally laminated to the moe applied to the pipe.
1-1ypalon, polymer and adhesive layer
I) This.

When applying the activated catalyst to the article to be encapsulated, it is advantageous to incorporate at least seven partially cured polymeric material scraps with the catalyst. In this connection, according to another aspect, the present invention provides at least partial bonding to the surface of an object. A protective cover for an object comprising a primary layer of hardened Bommer material and a secondary cover of Bommer material applied to the primary layer on the object, either as a pre-existing self-supporting article or on the object. wherein the cover comprises a hardenable bomber material, the primary layer preferably promoting faecesization of the hardenable feed and ingesting a catalyst upon contact with the primary layer; I propose 0t.

The combination of a hardened primary layer and a secondary polymeric cover in particular allows the primary layer to be at least partially (preferably virtually non-stick)
When cured, the object thus recovered is provided with advantageously balanced protective properties. The curable material of the cover may be an adhesive that adheres the cover to the primary layer.

Is it preferable to pre-coat the adhesive on the secondary cover or the primary layer? Is this separate? This is acceptable.

Preferably, the adhesive is curable and, surprisingly, the primary layer is cured partially or completely upon contact with the adhesive, regardless of whether the primary layer is made of a suitable material. Thus, proper adhesive curing is facilitated.

Any suitable curable composition, such as Elkin functional feed, phenolic resin, acrylic resin, styrene resin, uretano resin or nolan resin, may be used to form the primary layer on the object. May be used with known hardeners.The preferred first layer feed is epoxy (A
Examples include Elkin-functional hisphenol A resins, epoxy-functional hisphenol-A resins, epoxylated butanoeno/acronitrile elastomers) and cured with known curing agents such as polyamides, polymercaptons, polyols, free amines or good. The first layer consists of objects (
For example, it may be pre-coated on a section of pipe for installation in a pipeline, or applied to the object immediately prior to application of the secondary cover.

For example, a first layer feed may be applied to a section of pipeline that has already been fitted and allowed to cure.

The curable primary layer may contain protective additives (e.g., corrosion inhibitors) in addition to the curable component, and the curable adhesive may be used to bond the secondary cover to the primary layer. Those containing the above-mentioned substances that promote curing are preferred. The catalytic material is
A suitable curable adhesive can be easily selected simply by trial and error.

The curing circumscribing R1 agent for adhering the secondary cover to the primary layer can be selected depending on the usage conditions of the covered object, and may be a known curing system including a -1-2 curing system.

Examples 6-8 were conducted to illustrate this aspect of the invention.

Examples 6-8 Examples 1-3 were repeated after first priming the pipe surface with the composition below.

DER662 Evogishi Resin 40% (Dow'Chemical commercial product) Z 6040 S 1lane Coupler 2%
(Dow Corning commercial product) 'rowncnd 5olvOnL l31ack S
LR2% (dye 14) Bananyl acedylacetone-1.2% (activated catalyst) Versamid I 40 Polyamide 7% ([1
() nktql commercial product) Methyl ethyl norton solvent 14%] - Luene solvent 33% This coating thus contains the activation catalyst of the free run calc generator (1), and this composition is heated at 50° C. for 30 minutes. It cured to a substantially non-tacky state.The adhesive-coated cover was then wrapped around the pipe and allowed to recover by gas storage.Thermocouples between the pipe surface and the adhesive ensured that the support material was cured during recovery. Ambient temperature of pipe (50°
C) for the adhesive to be at a minimum temperature of 20° (approximately 5~10°)
C) I realized what I was doing.

The sleeves were inspected after 24 hours. The recovered samples with activated catalyst 2 were adhered to the pipe surface, and the adhesive layer hardened into a rigid layer that could only be removed from the pipe with difficulty using a chisel. Samples recovered with uncoated Steel-1 were cured and the support/interlayer/adhesive could be easily removed from the pipe.

Example 9 ■Migami Kakugumi and P Iexigum ]' 2i /15 900VA
IE711 5 +00 SarLomer 210 30 600Santic
izer I 41 15 300 [-butyl peroxyhenzoate 2.5 50 ・The compound will be explained below.

Δ1゛M5 is polyethylene glycol dimethacrylate of molecular weight 330 commercially available from Δncomer, SarLomer 210 is polyethylene glycol dimethacrylate of molecular weight 330 commercially available from sartomer,
2-Ethylhexyldiphenylphosphate, Plcxigum P 24, commercially available from Rohm, is a polybutyl methacrylate commercially available from Rohm.

Under stirring, SarLomer 210.5 anticiz
Plexigum P 24 and VAE 711 (
A mixture of coarse powder) was added. Stir to break up any lumps. Heat-shrinkable polyolefin/EVA notebook (30% recovery under unrestrained conditions)" Type 2 (100mm x I 50
A coating with a thickness of 1.5 mm was obtained on the sheet by pouring the paste onto the sheet (mmX I5 mm) and using a doctor blade. A piece of soric-containing paper was placed on top of the adhesive.

After 1 hour, the adhesive gelled and the glue-containing paper was peeled off. The adhesive is cobalt (■) acetylacetonate (
2 parts), N,N-dimethyl-p-toluidine (23 parts)
, Versamid ] 40 (25 copies) and Ep.
ikoLe828(501,5hell Chemic
It was adhered to the steel as described below by using a primer solution (commercial product).

A mild steel duplex with a diameter of 63.5 mm and a wall thickness of 6 mm was gridblasted and degreased with methyl ether ketone. The steel was then primed with the solution and heated at 50°C for 8 hours to cure the coating.

Glue coated steel rod sort? It was fully duped and held together with adhesive patches.

The sheet was then heated with a gas torch to recover.

It remained adhered for 48 hours at 50°C.

Sorts were dissected after 48 hours. The adhesive bonded the hardened, primed steel and the support sheet.

Example 10 Example 9 was repeated except that N-phenyldiethanolamine was used in place of N,N-dimethyl-p-toluidine in the primer.

In accordance with the present invention, the IKV electrical cable splice (see Figure 6 for dimensions) is designed to reduce the high temperatures that occur under overload conditions.
To provide an environmental seal that can withstand, for example, 90° C., it has an adhesive that can be installed during heat shrinkage of the polymeric sleeve to flow and lubricate the joint void. The main points of this aspect of the invention are ii (point IJ, user 1 - 1' deer glue (approximately Iky'), t] 1' and 2'
f-Full, 1'; , 1-Hini I Notata 1's low 1) effect ゛1 layering l: 1! + I garden (example/L garden (shown in Figure 1)
) 1, ) 40~50℃) 1 unit, ζ, (firefly S18 (l
If the desired lamination lateral movement is carried out, it is necessary to make a suitable low swamp II so that the seal 11 can be changed.
(If', ll 0-50℃) , -y', 1:no(,1:p&)formed rhensert) is fJl, fed A9,1. When (1, 1) is coated with active f1 conversion catalyst, low temperature -Q Ii'J is converted into ζ flow PC, / environmental sealing 11 nosteno, or 11, I et al., (1ro3.
Bi(: [i 3 warm melon change f and J゛ital? Endurance tI
Iru1, υQ)j9-like installation is shown in Figures 7 to 7 of the attached 1-1 drawing.
Refer to Figure 9 - ζ will be explained later.
1 ll' 11・U) The contact 1'1 cut hardens (due to the ripe decomposition of peroxide, jl, 1, a typical cross-sectional view of the adhesive layer obtained in FIG.
rt+11;, heat-shrinked noni support t-H, thermosetting adhesive X, uncured adhesive Z, hardened primer adhesive Y
, and) 1-Plum 1. < is the entrance surface of connector F, small 1'1, hardened;
Next PI: 7'i:
It will be added.

1. Impact resistance 2. Sealing to the surface against damage + 1 ability 1 part Due to the sonic force of quinone (4), if it is not constant C), the time table and the hardening are done one by one (7, uniformly 1 eJ!
The actual result is 1, 1, 1, j-:
l ji -temporal layer lateral progression is within the scope of the present invention.

(- or 17, permanent stratified lateral progression is sufficient l, double hardening 1.
8 and 8 to 100% of the various sex τT/layers and two layers of F14' bond layer using adhesive tape or chunks (formulation I (also see 5.)) (e.g. bullet +1 (for impact)) Stiffness 11° (
1'l to I'), it is possible to change the mechanical properties, and the control tU properties for various objects can be changed to (J'4); You can make a rotor, a saw, and a saw.

Typical combinations and examples of cable splices are described in detail below in Articles 1 and 2.
In tape wrapping a section or more, the curing properties can be further controlled by changing any or all of the following:

1. Type and amount of peroginode to control reaction temperature, reaction rate, crosslinking density, etc.

2. Monomer functionality: Monofunctional resins are made more flexible than their multifunctional counterparts by controlling the crosslink density.

3. Flexibility can be improved by adding non-reactive elastomers.

4 Stiffness can be improved by using fillers and reinforcing agents.

5. Flexibility can be increased by using vinyl terminated rubbers or oligomers with flexible backbones such as polyurethane acrylates.

6 Rigidity can be improved by using oligomers with rigid main chains such as bisphenol A acrylates (epoxy acrylates).

7 The reaction rate can be controlled by selecting monomers/oligomers such as methacrylates that cure more slowly than acrylates.

8. Affinity for a given surface can be controlled by the choice of monomers/oligomers (for example, polyethylene adheres well to stearyl or lauryl-based monomers, or metals adhere well to more polar monomers). (For example, it adheres well with 1,6-hexanediolnomethacrylate).

I K V splice Cable: PVC, HDPE, XL HDPE.

Heat-shrinkable polyethylene.

See figure 6 for joint dimensions.

Typical temperature distribution during heat shrinkage, see Figure 6.

Example 11 Typical portion distribution.

Yield: Plate μs each Kite Spoon Hayabusa Adhesive Polybutyl Methacrylate P24 571.6-Hexanediol S R23925 Dimethacrylate Vinyl Acetate V, AE711 2.5 Elastomer Edylheginol S anticiscr141 10
Phosphate t-butylperoxy TBI) 8 2.0 Hensied Primer Toluene 30 Chlorinated Polyethylene CI) E3614 60 Cobalt Octoate 10*) Note*) Contents may be varied to control cure rate and crosslink density. good.

Primer is applied to the article to be encapsulated to promote curing from the inside.

Example 12 A typical two-part combination.

1 value summon ((b+7) Or-Nio Weight part 5R23925 P 24 53 S 14] 10 VAE711 2 Norica 1.5゜TBPB 20 Stearyl methacrylate 25.0 P24 ” 53 S 141 10 ■ Eight Ishi7112 Nori force 1. 5 TBPB 0.5 The primer may be the same as in Example 11 or a more reactive primer (e.g. cobalt octoate-1
The same toluene saturated solution of CPE3614 as above was used, except that half of * was replaced with N,N-dimedyl=p-toluinone.

These two Q-tapes were cold laminated together to obtain a two-part tape, or two layers were coated onto heat-shrinkable notebook. These are storage stable and activated by heat or chemical stimulation.

The adhesive components were mixed and extruded into tape or formed into junk. The method used at this time can be easily selected and used by those skilled in the art in accordance with the material.

The curable composition for electrical insulation contains red iron oxide (for example, (
-i- in an amount of 1 to 5 weight percent based on the weight of the zero-curable polymer or oligomer.

Examples of curable formulations are shown below. The He Ping-1 used will be explained.

Peroxide'r Bp Bt-butyl peroxyhenzoate CI
-i P Cumene hydroperoxide Bl) Bennyl peroxide (commercial product from Noury Chemicals) Enji 5R239I, 6-hexanethiol dimethacrylate (commercial product from S artomer) SMA Stearyl methacrylate (commercial product from S artomer or Rhom) L M
A lauryl methacrylate (S artomer or Rhom commercial product) SR31
3 Stearoyl methacrylate (S artomer commercial product) Oligomer Chcmlink 2000 Acrylate oligomer Chemlink 2100 Methacrylate oligomer (S artomer or AnchOmer commercial product) PhoLomer 3005 Epoxidized oil acrylate P photomer 614 0 Polyester urethane acrylate Photomer 3016 Acrylated epoxy (D
iamond Shamrock commercial product) Base polymer P 24 Polybutyl methacrylate (Rohm Chemicals commercial product) Plasticity/rubber
nLo commercial product) V A E Hinyl acetate elastomer (Wack
er Chemie commercial product) Myccr Polybutanoene rubber (13RG Goodrich commercial product) CP E 3016 Chlorinated polyethylene (I3ayc
r Chemicals (commercial product) Glowing agent TI-+crmax black Carbon black Δ
crosil 200 Huyumtonorika (1) eq
ussa commercial product) Solvent 131ack black dye (Towns
end C1+emicals (commercially available) hydroquinone (Δ1drich commercially available)
10% white spirit solution of cobalt octoate (commercially available from Durham) N,N-Tumedel-p-toluidino (commercially available from A 1drich) Mixed with Pho from Diamond Shamrock
This was done using tomer resin.

Examples 19-24 Examples 13-18 were repeated except that P 6140 was used in place of P 3016.

Examples 25-30 Examples 13-18 were repeated except that P3049 was used in place of P3(116,).

Examples 31 to 36 Example 46 SR23925 1) 24 60 TBPB 2 S 141 10 Red iron oxide 2% In Examples 53 to 57, a coatable primer (30 parts by weight of toluene, 60 parts by weight of CPE, 1 part by weight of cobalt naphenate) ) was used.

Example 53 Jealousy-Momme weight part 5R23925 P 24 53 S 141 10 VAE 711 5 1' B P B 2 It hardens and becomes rigid. .

Example 5/I Ingredients Ichikawabe Sle 239 10 Stearyl methacrylate 20 P24 '53 S 141 2 T 13 P I3 0.5 When cured, rubber properties/Iσ flexibility are obtained.Example 5
5 Ingredient City! ItIs Chemlink 2000 25 P 24 53 S 141 10 VAE711 5 CMJ' 2 Cured to provide rigidity and excellent saw water resistance exceeding l.

Example 56 Ingredients Part by weight i'llOtomer 3005'251' 24
53 S 141 10 Bennluper Ogisod 25 A flexible side slope with a low activation temperature was obtained.

Example 57 Ingredients 1 part weight Chcmlink 210 (1, 25 P 24 53 S 141 10 VAE711 5 T B P B 2 Cured to obtain properties similar to A3, but the curing speed was slow like methacrylate type. it was late.

In the following examples, as a primer, Examples 53-
The same one as No. 57 was used. The two separation strips were brought together without primer before installation.

Example 58 The rigid composition of Example 53 and the flexible composition of Example 54 were used.

Example 59 The rigid composition of Example 53 and the flexible composition described below were used.

Ingredients Parts by weight 5R23925 P 24 53 S 141 10 VAE711, 20 Hydroquinone (700 ppm) (Semi-permanently cured and continued IJ) Example 60 Rigid composition of Example 57 that was gradually cured to relieve stress. , t5 and the flexible composition of Example 54 were used.

Example 61 Example 54 with affinity for polyolefin surfaces
A flexible composition was used, and a more polar rubbery composition with some affinity for metals was used.

L momme Weight part 5R23925 2453 S 141 10 VAE, 7] 1 20 'f' B P B I ・ Example 62 SR23925SR23925 P24 53 P24 20 Sell 10 CI"E 33 VAI Sannia 112.5Sl 10 TB I) B 2. 0 Cobalt octoate 1.0 Figures 6 to 10 of the accompanying drawings will be explained. Figure 6 shows the length L 400-450mm and the maximum diameter DI20-15.
3. Schematic representation of 0mm IKV cable splice enclosure. A small cable with a diameter of 1? Approximately 50. Splice it with a large cable of mm,
There is a breakout I from the cable. Diameter G of connector 0 of known metal/plastic construction.
is about 100mm and δ is around. The enclosure is made of a heat-shrinkable material, shown as a curable material, which recovers the cables and connectors to an extent to permit filling with a hardening material, t i-1, (shown at 42o). Remove the outer cover 1-1. Clips I] grip the two cables (E, FDt! and ζ cover 1-1 together) to ensure a good sealing of the enclosure with the polymer feed.

7A7L degrees ('IJ) in the drawings are typical temperatures at the location shown during heat recovery of the cover around the cable splice.

Figure 7 shows i-1 in manufacturing the enclosure shown in Figure 6.
The filtration process is shown. A tape T of curable material is wrapped around one cable F on one side of the connector. Insert a suitably F-shaped chunk Q of curable material into the irregularly shaped hole around the two cables E and F on the other side of the connector.

Figure 8 shows the general shape of the chunk and chibuto in Figure 7 with a layer of tape. FIG. 9 and FIG.
J: shows the hardening form upon heat recovery. An activated catalytic primer (not shown) was applied to the cables and connectors prior to application of curable +At1. As mentioned above, material It remains as it is. It is also within the scope of the invention to form simple non-branching splices of a single cable, e.g.
Yes.

[Brief explanation of drawings]

Figures 1-3 show portions of three different articles of the invention that are in wrap-around configuration. Figures 4 and 5 show the tubular article around the cable splice; Figure 6 shows the cable splice enclosure; Figure 7 shows the enclosure of Figure 6; FIG. 8 is a diagram showing the general shape of the curable material; FIG. 9 and FIG. 1O are diagrams showing the curing form. DESCRIPTION OF SYMBOLS 1, H...Cover, 2...Rail, 3...Flap part, 4...Hardenable layer, 5...Intermediate layer, 6...Cable, 7...Splice, C...・Connector, D,
E, F, G...Diameter, P...Clip, Q...Chunk, T...Tape, X, Y...Material, Z...Layer. Patent Applicant Raychem Limited Agent Patent Attorney Two Idiots Procedural Amendment (
Indication of self-control case Patent Application No. 13379 of 1985 2, Name of the invention Enclosed article 3, Relationship with the amended person case Patent applicant address London Easy, England, United Kingdom 4
・1NL, Fenter's lane 1. Rolls Building Mata No. 7, Rolls House name: Raychem
Limited 4 Agent 5, date of amendment order: Voluntary

Claims (1)

Claims: 1. At least partially encapsulating at least a portion of the article having sufficient thickness and/or varying feed layers to at least temporarily provide a laminated cured structure after curing of the curable material. an enclosure comprising a substantially solid heat-flowable polymeric material comprising a curable material, the heat-flowable polymeric material overlying a layer of substantially solid curable material enclosing an article; the curable material comprises (a) an epoxy compound or (b) a free radical curable feed, a mixture of a polymer and a free radical generator or an activated catalyst for the generator. An enclosure characterized by: 2. The enclosure of claim 1 having a cover enclosing at least a portion of the thermoflowable polymeric material. 3. The enclosure of claim 2, wherein the cover is comprised of a dimensionally heat recoverable polymeric material, the heat flowable polymeric material being heat flowable at the temperatures to which it is subjected during heat recovery of the cover around the article. 4. (1) disposing a thermoflowable polymeric material so as to at least partially encapsulate at least a portion of the article;
A method for encapsulating an article, comprising: (2) curing a curable material to form a laminate cured structure. 5. The method of claim 4, wherein the thermoflowable material is heated to a fluid state at or during curing and is physically restrained to remain around the encapsulated article. 6. The method of claim 5, wherein the physical restraint is provided by a cover enclosing at least a portion of the thermofluid polymer ell. 7. The method of claim 6, wherein the cover is comprised of a dimensionally heat-recoverable polymeric material, wherein the heat-flowable polymeric material flows upon heating and the cover recovers around the encapsulated portion of the article. 8. The thermofluid polymeric material is curable and substantially 1
8. An enclosure or method according to any one of clauses 1 to 7, consisting of only one type of material. 9. An enclosure or method according to any of the preceding clauses, wherein the thermofluid polymeric material is curable and consists of at least two layers of material of different chemical composition or different molecular weights. 10. An enclosure or method according to any of the preceding clauses, wherein the thermoflowable polymeric material is comprised of at least one layer of curable material and at least 61 layers of thermoplastic or elastic polymeric material. 11. The enclosure or method of claim 10, wherein the curable material layer is between the thermoplastic or elastic polymeric feed layer and the article. 12. The enclosure or method of claim 11, having a thermoplastic or elastic layer or a layer of secondary curable material between the two curable layers. 13. An enclosure or method according to any of clauses 10 to 12, wherein the thermoplastic or elastic layer comprises a polyamide hotmelt. 14. The enclosure or method according to any one of Items 10 to 12, wherein the thermoplastic or elastic layer comprises chlorosulfonated polyethylene. 15. An enclosure or method according to any one of clauses 1 to 14, wherein there is a means for initiating curing outwardly from the enclosed article. 16. The enclosure or method of claim 15, wherein the initiation means comprises an activated catalyst carried by the enclosure article. +7. The catalyst is contained in a layer of at least partially curable polymeric material that adheres to the surface of the encapsulated article.
Enclosure or method as described in Section. 18. An enclosure or method according to any of clauses 1 to 17, wherein the curable material is cured. 19. The laminated cured structure has at least one layer that is significantly more flexible than the at least one layer.
9. An enclosure or method according to any of clause 8. 20. The thermoflowable polymeric material according to any of paragraphs 1 to 19, having a thickness in the direction perpendicular to the surface of the encapsulated article at least in some places of 3 mm, preferably 111 mm, more preferably greater than 25 mm. ”, Nku [Non, 1.
- or method. 21. A self-supporting body of a thermofluid polymer composition formed into a shape that is placed adjacent to the corresponding part of the article without appreciable bending (1), Item 20, item 4, item 4 used in the method. and an article used in the encrusting method according to any one of paragraphs 1 to 20. 23. The cover is capable of restraining the thermofluid feed when heated to a thermofluid state. Paragraph 21 Manoko is characterized in that it is held around the enclosed article by the following means:
comprising one article, the container according to any one of paragraphs 1 to 20, "1- for forming a jar, or
A kit of parts used to carry out the method according to any of Item 20. 24. The kit according to paragraph 22, wherein the cover is .]° legal heat recoverable. 25. The resilient cover used for recovery 4-2 around the object (J) is used to spread the resilient cover over at least a portion of the surface of the cover 4-2 around the object. A substantially solid curable adhesive comprising (a) a superboggin compound or (h) a free radical curable material, a mixture of a polymer and a free radical generator, likely an activated catalyst for that generator. 26. An article comprising an intermediate layer comprising a heat-softening polymer feed located between the cover and the adhesive, and enclosing at least 6-; , comprising an outer layer of a dimensionally recoverable cover used to recover when the object is wrapped, an intermediate layer comprising nosulfonated polyethylene, and an innermost layer of a curable adhesive. An article that encloses at least a portion of an object. 27. Article according to paragraph 26, in which the intermediate layer has a droop temperature (Y) higher than the droop temperature of the adhesive layer. The article according to any one of Item 27, Enta [1-) 4--Also (method).
and an enclosure or article according to any of items 25 to 28. 30. An article, enclosure or method for encapsulating at least a portion of a substrate substantially as described in any of Examples 1-62. 31. A method of encapsulating at least a portion of an object, the method comprising: (a) an epoxy compound, or a free-wrap material, a mixture of a polymer and a free radical generator or an activated catalyst for the generator; (b) disposing a substantially solid curable adhesive layer comprising a thermosetting polymeric material over the curable adhesive; , (c) placing a dimensionally recoverable cup on the intermediate layer, (
d) a method comprising restoring the cover and curing the curable adhesive. 32. The method of claim 31, comprising the step of disposing over the object an activation layer comprising an activated catalyst that activates the free radical generator upon contact with the curable adhesive. 33, is substantially a heat dissipator, and No. 1 to 22.25 to 3
An object enclosed by an article, method or enclosure according to any of clause 2. 34. The object according to paragraph 33, which is a metal pipeline. 35, 2nd hole 3rd with electrical cable splice or termination
Object described in item 3. 36. A kit of parts for enclosing at least a portion of an object, the article comprising: (a) a dimensionally resilient cover; (b) an epoxy compound or free radical curable material that can be wrapped around the object; , a curable adhesive comprising a substantially solid mixture of a polymer and a free radical generator or a catalyst for the generator; (C) a heat softenable adhesive that can be placed around the object between the cover and the curable adhesive; A kit of parts made of polymer materials. 37. A kit of parts according to clause 36, comprising a free radical generator activation catalyst in a form suitable for application to an object prior to application of the curable adhesive containing the free radical generator. 38. A kit of parts according to paragraph 36 or paragraph 37, wherein the thermosoftening polymeric material contains a catalyst for activating a free radical generator. 39. A method of making an article having a substantially solid curable mixture of a free radical curable material, a polymer and a free radical generator, the liquid free radical curable material capable of swelling or dissolving the polymer and the polymer and the generator. A method comprising mixing agents to form a flowable mixture, applying the flowable mixture to an article, and increasing the viscosity of the mixture to render the applied mixture substantially solid. 40, for an object comprising an at least partially curable primary polymeric material layer adhering to the object surface, and a secondary polymeric material cover applied to the primary layer on the object as a pre-existing self-supporting article protective cover. 41. Applying a layer of a primary curable polymeric material to the object, curing at least part of the polymeric material of the primary layer, and applying a pre-existing secondary cover of self-supporting polymeric material to the primary layer; A method of applying a protective covering to an object comprising: 42. A cover according to paragraph 40 or 41, wherein the primary layer is at least partially curable and preferably substantially non-tacky on the object to which the secondary cover is applied. Method. 43. The secondary cover is adhered to the primary layer by a curable adhesive, and the primary layer contains a catalyst that accelerates adhesive curing upon contact with the primary layer, according to any of paragraphs 40 to 42. cover or method. 44. The cover according to paragraph 40 for use in the article, enclosure or method according to any one of paragraphs 1 to 39. 45. A kit of parts for protectively covering an object, comprising (a
) a material applicable to the object to form an adhesive primary layer of at least one publicly curable polymeric material specified in any of paragraphs 40 to 44; Applicable paragraphs 40 to 44) A kit of parts consisting of one or more specified pre-existing self-supporting polymeric secondary covers.